CN102927071B - Hydraulic anti-jamming control system of drilling and loading machine - Google Patents

Abstract

The invention discloses a hydraulic anti-jamming control system of a drilling and loading machine, which comprises a plunger pump, a multi-way reversing valve, a pilot oil source valve bank, a pilot oil control valve bank, an anti-jamming valve bank, a thrust cylinder, an impactor and a drill rotation motor, wherein the plunger pump is connected with the plunger pump through a pipeline; the oil outlet of the plunger pump is respectively connected with the multi-way reversing valve and the pilot oil source valve group, and the oil return ports of the multi-way reversing valve and the pilot oil source valve group are connected with an oil tank through a cooler; the first joint of the multi-way reversing valve is connected with an anti-jamming valve bank, and the anti-jamming valve bank is connected with the propulsion oil cylinder through a balance valve bank; the second joint of the multi-way reversing valve is connected with the impactor; and a third link of the multi-way reversing valve is connected with the drill rod rotating motor. The hydraulic anti-jamming control system of the drilling and loading machine can set multi-stage propelling and impact pressures so as to adapt to different geological conditions and effectively realize active anti-jamming; and the control system can control the impacter and the propulsion oil cylinder to shift to the light impact and light push operation during drill rod clamping, so as to repair the drilled hole and effectively improve the effect of drill rod clamping prevention.

Description

Drilling machine hydraulic anti-jamming control system

technical field

The patent of the present invention relates to the technical field of mining comprehensive tunneling equipment, in particular to a hydraulic anti-jamming control system of a mining drilling machine.

Background technique

Drilling machine is a comprehensive tunneling equipment integrating drilling, loading and conveying. It is mainly used in the tunneling of small and medium-sized hard rock roadways in coal mines in my country, and can also be used in tunneling projects in metallurgy, railways, highways, hydropower and other departments. The prospects are extremely bright. The drilling rig is mainly composed of a raking unit, a drilling rig unit, a feeding hopper, a traveling unit, a frame unit, a supporting unit, and a transport unit.

The drilling machine mainly adopts the full hydraulic rock drilling method. Due to the harsh working environment and complex and changeable working conditions of the drilling machine, it is easy to get stuck during the rock drilling process, which is very unfavorable for the drilling operation of the drilling machine. Once jamming occurs, it will take a long time to deal with the stuck drill bit and drill rod, which will affect the efficiency of drilling operations. In many cases, it is difficult to get rid of the jamming, and the drilled drill rods can only be discarded. Drilling rod and bit, re-drilling, which will increase the cost of drilling operations. At present, the anti-jamming control system of the drilling rig is relatively simple. When the drilling machine is stuck, only the method of controlling the push cylinder to retreat is used to prevent the jamming. It is difficult to prevent and deal with complex jamming conditions.

Contents of the invention

In view of this, the purpose of the present invention is to provide a drilling rig hydraulic anti-jamming control system, which can better prevent and handle the jamming situation, so as to solve the defect of poor anti-jamming function existing in the existing anti-jamming control system . The object of the invention is achieved through the following technical solutions:

The hydraulic anti-jamming control system of the drilling machine of the present invention includes a fuel tank, a plunger pump, a multi-way reversing valve, a pilot oil source valve group, a pilot oil control valve group, a hydraulic pilot control valve, a hydraulic pilot control valve device, and an anti-jamming drill valve block, balance valve block, propulsion cylinder, impactor and brazing motor,

The oil outlet of the plunger pump is respectively connected to the multi-way reversing valve and the pilot oil source valve group, and the oil return ports of the multi-way reversing valve and the pilot oil source valve group are connected to the oil tank through the cooler;

The P2 port of the pilot oil source valve group is connected to the hydraulic pilot control valve and the hydraulic pilot control valve device, the oil return port of the hydraulic pilot control valve and the hydraulic pilot control valve device is connected to the oil tank, and the a2 of the hydraulic pilot control valve device ', b2' ports are connected to the a2', b2' ports of the pilot control valve group, the b1 port of the hydraulic pilot control valve device is connected to the b1 port of the multi-way reversing valve, and the a1, a2, b2 ports of the pilot control valve group Ports are connected to ports a1, a2 and b2 of the multi-way reversing valve, ports k1 and k2 of the pilot control valve group are connected to ports k1 and k2 of the anti-jamming valve group, B3 of the third joint of the multi-way reversing valve and M4 ports are respectively connected to k3 and k4 ports of the anti-jamming valve group;

The drilling rig hydraulic anti-jamming control system also includes a first pressure gauge for detecting the outlet oil pressure of the plunger pump, a second pressure gauge for detecting the outlet oil pressure of the pilot oil source valve group, a third pressure gauge for detecting the pressure of the propulsion cylinder, The fourth pressure gauge for detecting the reverse pressure of the brazing motor, and the fifth pressure gauge for detecting the pressure of the impactor;

The ports A1 and B1 of the first joint of the multi-way reversing valve are connected to the ports A1 and B1 of the anti-seize valve group, the ports A1' and B1' of the anti-seize valve group are connected to the balance valve group, and the balance valve group is connected to the balance valve group. The propulsion oil cylinder is connected; the B1 port of the second joint of the multi-way reversing valve is connected with the impactor, the A1 port of the second joint of the multi-way reversing valve is closed, and the oil return port of the impactor is connected with the fuel tank; the multi-way reversing valve The ports A3 and B3 of the third joint of the valve are connected to the brazing motor, and the leakage oil outlet of the brazing motor is connected to the oil tank.

Further, the multi-way reversing valve includes a safety valve, a first main control valve, a second main control valve, a third main control valve, a first compensator, a second compensator, a third compensator, a first LS overflow Flow valve, 2nd LS relief valve, 3rd LS relief valve, 4th LS relief valve, 1st shuttle valve, 2nd shuttle valve, 3rd shuttle valve, 1st overload supplement valve, 2nd overload supplement The oil valve, the third overload oil supply valve, the fourth overload oil supply valve, the fifth overload oil supply valve and the sixth overload oil supply valve. ; The A1 oil passage of the first joint of the multi-way reversing valve has the first LS relief valve and the sixth overload oil supply valve, and the B1 oil passage of the first joint of the multi-way reversing valve has the second LS Relief valve and the fifth overload oil supplement valve; the A2 and B2 oil passages of the second joint of the multi-way reversing valve share the third LS relief valve, and the B2 oil passage of the second joint of the multi-way reversing valve has There is a third overload oil supply valve, the A2 oil circuit of the second joint of the multi-way directional valve is closed; the A3 and B3 oil lines of the third joint of the multi-way directional valve share the fourth LS relief valve, and the The A3 and B3 oil passages of the third joint of the multi-way reversing valve are equipped with a first overload oil supply valve and a second overload oil supply valve respectively.

Further, the pilot oil source valve group includes a pressure relief valve, a first one-way valve and an accumulator, and the output high pressure oil of the plunger pump passes through the P1 port of the pilot oil source valve group, pressure relief and overflow The valve and the one-way valve are respectively connected to the P2 port of the accumulator and the pilot oil source valve group, and the oil return port and the leakage oil port of the pressure relief valve are connected to the oil tank.

Further, the pilot oil control valve group includes a directional valve, a two-position three-way hydraulic control valve and a fourth shuttle valve, the a2' port of the pilot oil control valve group is connected to an oil inlet of the fourth shuttle valve, and the pilot oil control valve group The b2' and k2 ports of the valve group are connected to the other oil inlet port of the fourth shuttle valve, and the oil outlet port of the fourth shuttle valve is simultaneously connected to the a1 port of the pilot oil control valve group and the G1 port of the two-position three-way hydraulic control valve Connection, the T1 port of the two-position three-way hydraulic control valve, the T2 port of the directional valve and the a2 port of the pilot oil control valve group are connected to the fuel tank, the N1 port of the two-position three-way hydraulic control valve is connected to the b2 port of the pilot oil control valve group Connection, the N2 port of the directional valve is connected to the control oil chamber of the two-position three-way hydraulic control valve, and the G2 port of the directional valve is connected to the k1 port of the pilot oil control valve group.

Further, the anti-seize valve group includes a pressure reducing valve, a first sequence valve, a second sequence valve, a fifth shuttle valve, a two-position four-way hydraulic control reversing valve, a first relief valve, and a second relief valve , the third relief valve, the two-position two-way hydraulic control reversing valve, the second one-way valve, the third one-way valve, the first built-in one-way valve, the first built-in one-way valve, the second built-in one-way valve, The third built-in one-way valve, the fourth built-in one-way valve, the fifth built-in one-way valve, the first damper and the second damper, the A1 port of the anti-seize valve group is connected with the pressure reducing valve and the second one-way valve at the same time connected, the oil outlet of the pressure reducing valve is connected with the e1 port of the two-position four-way hydraulic control reversing valve, the k1 port of the anti-seize valve group and the fifth built-in single valve, and the B1, Ports A1' and B1' are respectively connected to ports f1, h1 and g1 of the two-position four-way hydraulic control reversing valve, port A1' of the anti-seize valve group is connected to the control oil chamber of the second sequence valve, and the anti-seize valve The B1 port of the group and the oil outlet of the pressure reducing valve are connected to the two oil inlets of the fifth shuttle valve, and the oil outlet of the fifth shuttle valve is connected to the fourth built-in one-way valve. The k3 of the anti-seize valve group The port is connected to the first sequence valve; the oil outlet of the first sequence valve is divided into three routes, the first route is connected to the control oil chamber of the two-position four-way hydraulic control reversing valve after passing through the first damper, and the second route is passed through the second damper The device is connected with the oil tank, and the third circuit is connected with the built-in one-way valve; the k4 port of the anti-seize valve group is connected with the third built-in one-way valve, and the k4 port of the anti-seize valve group is also connected with the third one-way valve Valve connection, the oil outlet of the third one-way valve is divided into three routes, the first route is connected to the oil tank after passing through the two-position two-way hydraulic control reversing valve and the second overflow valve, and the second route is connected to the oil tank after passing through the third overflow valve The third path is connected to the oil tank after passing through the second sequence valve and the first relief valve, and the outlet of the second sequence valve is connected to the second built-in one-way valve. The pressure reducing valve, the first sequence valve, and the second sequence The leakage oil outlet of the valve and the two-position four-way hydraulic control reversing valve is connected with the oil tank.

Further, the plunger pump 1 is a load-sensing plunger variable pump, and the multi-way reversing valve is a load-sensing multi-way reversing proportional valve.

Beneficial effects of the present invention: The hydraulic anti-jamming control system of the drilling machine of the present invention achieves the following technical effects through the aforementioned technical scheme:

1. The present invention can set multi-stage propulsion and impact pressure through the pilot oil source valve group, pilot oil control valve group, hydraulic pilot control valve, and hydraulic pilot control valve device to adapt to different geological conditions and effectively realize active anti-seize Brazing.

2. In the case of jamming, the hydraulic anti-jamming control system of the drilling machine of the present invention can control the impactor and the propulsion cylinder to switch to light punching and jogging operations, repair the blast hole, and effectively improve the anti-jamming effect.

3. The present invention adopts load-sensing technology, improves the efficiency of the control system, and has a good energy-saving effect, adopts the load-sensing plunger variable pump, load-sensing proportional reversing valve, improves the control accuracy of the control system, and is simple and convenient to operate .

Description of drawings

Fig. 1 is a schematic diagram of the present invention;

Fig. 2 is a schematic diagram of the multi-way reversing valve in Fig. 1;

Fig. 3 is a schematic diagram of the pilot oil source valve group in Fig. 1;

Fig. 4 is a schematic diagram of the pilot oil control valve group in Fig. 1;

Fig. 5 is a schematic diagram of the anti-jamming valve group in Fig. 1 .

Detailed ways

The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

As shown in the figure, the hydraulic anti-jamming control system of the drilling rig in this embodiment includes an oil tank 22, a plunger pump 1, a multi-way reversing valve 2, a pilot oil source valve group 4, a pilot oil control valve group 5, and a hydraulic pilot control valve. Valve 11, hydraulic pilot control valve device 12, anti-jamming valve group 6, balance valve group 7, propulsion cylinder 8, impactor 9 and brazing motor 10,

The oil outlet of the plunger pump 1 is respectively connected with the multi-way reversing valve 2 and the pilot oil source valve group 4, and the oil return port of the multi-way reversing valve 2 and the pilot oil source valve group 4 passes through the cooler 21 and the oil tank 22 connections;

The P2 port of the pilot oil source valve group 4 is connected with the hydraulic pilot control valve 11 and the hydraulic pilot control valve device 12, and the oil return ports of the hydraulic pilot control valve 11 and the hydraulic pilot control valve device 12 are connected with the oil tank 22, and the hydraulic pressure Ports a2' and b2' of the pilot control valve device 12 are connected to ports a2' and b2' of the pilot control valve group 5, and port b1 of the hydraulic pilot control valve device 12 is connected to port b1 of the multi-way reversing valve 2. Ports a1, a2, b2 of pilot control valve group 5 are connected to ports a1, a2, b2 of multi-way reversing valve 2, ports k1, k2 of pilot control valve group 5 are connected to ports k1, k2 of anti-seize valve group 6 connection, the B3 and M4 ports of the third joint of the multi-way reversing valve 2 are respectively connected with the k3 and k4 ports of the anti-jamming valve group;

The hydraulic anti-jamming control system of the drilling rig also includes a first pressure gauge 13 for detecting the oil pressure at the outlet of the plunger pump 1, a second pressure gauge 14 for detecting the oil pressure at the outlet of the pilot oil source valve group 4, and a pressure gauge for detecting the pressure of the propulsion cylinder 8. The third pressure gauge 15, the fourth pressure gauge 16 that detects the reverse pressure of the brazing motor 10, and the fifth pressure gauge 17 that detects the impactor 9 pressure;

Ports A1 and B1 of the first joint of the multi-way reversing valve 2 are connected to ports A1 and B1 of the anti-seize valve group 6, and ports A1' and B1' of the anti-seize valve group 6 are connected to the balance valve group 7, The balance valve group 7 is connected to the propulsion cylinder 8; the B1 port of the second joint of the multi-way reversing valve 2 is connected to the impactor 9, the A1 port of the second joint of the multi-way reversing valve 2 is closed, and the oil return of the impactor 9 The mouth is connected with the oil tank 22; the A3 and B3 ports of the third joint of the multi-way reversing valve 2 are connected with the brazing motor 10, and the leakage oil outlet of the brazing motor 10 is connected with the oil tank 22.

As an improvement to this embodiment, the multi-way reversing valve 2 includes a safety valve 30, a first main control valve 24, a second main control valve 29, a third main control valve 213, a first compensator 31, a second compensator device 28, third compensator 212, first LS relief valve 25, second LS relief valve 26, third LS relief valve 210, fourth LS relief valve 214, first shuttle valve 23, second shuttle Valve 27, the third shuttle valve 211, the first overload oil supply valve 215, the second overload oil supply valve 216, the third overload oil supply valve 217, the fourth overload oil supply valve 218, the fifth overload oil supply valve 219 and the first overload oil supply valve Six overload replenishment valves 220, the median functions of the three main control valves of the multi-way directional valve 2 are all Y-type; the A1 oil circuit of the first joint of the multi-way directional valve 2 has the first LS overflow Valve 25 and the sixth overload oil supplement valve 220, the B1 oil circuit of the first joint of the multi-way reversing valve 2 has the second LS relief valve 26 and the fifth overload oil supplement valve 219; the multi-way reversing valve The A2 and B2 oil passages of the second joint of valve 2 share the third LS relief valve 210, the B2 oil passage of the second joint of the multi-way reversing valve 2 has a third overload oil supply valve 217, and the multi-way reversing valve 2 The A2 oil passage of the second joint of the multi-way reversing valve 2 is closed; the A3 and B3 oil passages of the third joint of the multi-way reversing valve 2 share the fourth LS relief valve 214, and the third joint of the multi-way reversing valve 2 The oil passages A3 and B3 respectively have a first overload oil supply valve 215 and a second overload oil supply valve 216 .

The present invention can set multi-stage propulsion and impact pressure through the pilot oil source valve group 4, the pilot oil control valve group 5, the hydraulic pilot control valve 11, and the hydraulic pilot control valve device 12, and control the propulsion oil cylinder 8 and the impactor 9 to adapt to different The geological conditions can effectively realize active anti-jamming. When encountering the jamming situation, the hydraulic anti-jamming control system of the drilling machine of the present invention can control the impactor 9 and the propulsion cylinder 8 to turn into light punching and jogging operations, repair the blast hole, and effectively improve the anti-jamming effect.

As an improvement to this embodiment, the pilot oil source valve group 4 includes a pressure relief valve 41, a first one-way valve 42 and an accumulator 43, and the output high-pressure oil of the plunger pump 1 passes through the pilot oil source sequentially. The P1 port of the valve group 4, the decompression and relief valve 41 and the one-way valve 42 are respectively connected with the accumulator 43 and the P2 port of the pilot oil source valve group 4, and the oil return port and leakage of the decompression and relief valve 41 The oil port is connected with the oil tank 22; the pilot oil source valve group 4 of this structure can adjust and control the oil pressure with high precision.

As an improvement to this embodiment, the pilot oil control valve group 5 includes a directional valve 51, a two-position three-way hydraulic control valve 52 and a fourth shuttle valve 53, and the port a2' of the pilot oil control valve group 5 is connected to the fourth shuttle valve 53, the b2' and k2 ports of the pilot oil control valve group 5 are connected to the other oil inlet port of the fourth shuttle valve 53, and the oil outlet port of the fourth shuttle valve 53 is connected to the pilot oil control valve group Port a1 of 5 is connected to port G1 of two-position three-way hydraulic control valve 52, port T1 of two-position three-way hydraulic control valve 52, port T2 of directional valve 51 and port a2 of pilot oil control valve group 5 are connected to oil tank 22 , the N1 port of the two-position three-way hydraulic control valve 52 is connected to the b2 port of the pilot oil control valve group 5, the N2 port of the directional valve 51 is connected to the control oil chamber of the two-position three-way hydraulic control valve 52, and the G2 port of the directional valve 51 The port is connected to the k1 port of the pilot oil control valve group 5; the pilot oil control valve group 5 of this structure can output precise control oil pressure, and the valve group is responsive and fast in response.

As an improvement to this embodiment, the anti-seize valve group 6 includes a pressure reducing valve 61, a first sequence valve 62, a second sequence valve 65, a fifth shuttle valve 63, a two-position four-way hydraulic control reversing valve 64, The first overflow valve 66, the second overflow valve 67, the third overflow valve 68, the two-position two-way hydraulic control reversing valve 69, the second check valve 610, the third check valve 611, the first built-in check valve One-way valve 612, first built-in check valve 613, second built-in one-way valve 614, third built-in one-way valve 615, fourth built-in one-way valve 616, fifth built-in one-way valve 617, first damper 618 and The second damper 619, the A1 port of the anti-seize valve group 6 is connected to the pressure reducing valve 61 and the second one-way valve 610 at the same time, and the oil outlet of the pressure reducing valve 61 is simultaneously reversing with the two-position four-way hydraulic control The e1 port of the valve 64, the k1 port of the anti-seize valve group 6 are connected to the fifth built-in one-way valve 617, and the B1, A1', B1' ports of the anti-seize valve group 6 are respectively connected to the two-position four-way hydraulic control reversing valve The f1, h1, g1 ports of 64 are connected, the A1' port of the anti-seize valve group 6 is connected with the control oil chamber of the second sequence valve 65, the B1 port of the anti-seize valve group 6 is connected with the oil outlet of the pressure reducing valve 61 It is connected with the two oil inlets of the fifth shuttle valve 63, the oil outlet of the fifth shuttle valve 63 is connected with the fourth built-in one-way valve 616, and the k3 port of the anti-seize valve group 6 is connected with the first sequence valve 62 ; The oil outlet of the first sequence valve 62 is divided into three routes, the first route is connected with the control oil chamber of the two-position four-way hydraulic control reversing valve 64 after passing through the first damper 618, and the second route is connected with the oil tank through the second damper 619 22 connection, the third way is connected with the built-in check valve 612; the k4 port of the anti-seize valve group 6 is connected with the third built-in check valve 615, and the k4 port of the anti-seize valve group 6 is also connected with the third The one-way valve 611 is connected, and the oil outlet of the third one-way valve 611 is divided into three routes. The third relief valve 68 is connected to the fuel tank 22 after the third overflow valve 65 and the first relief valve 66. The outlet of the second sequence valve 65 is connected to the second built-in one-way valve 614. The leakage oil outlets of the pressure reducing valve 61, the first sequence valve 62, the second sequence valve 65, and the two-position four-way hydraulic control reversing valve 64 are connected to the oil tank 22; the anti-jamming valve group 6 of this structure can realize the control The impactor 9 and the propulsion oil cylinder 8 are turned into light punching and light pushing operations to repair the blast hole and effectively improve the anti-jamming effect.

As an improvement to this embodiment, the plunger pump 1 is a load-sensitive plunger variable pump, and the multi-way reversing valve 2 is a load-sensitive multi-way reversing proportional valve; this system adopts load-sensing technology, which improves the control system The efficiency is high, and it has a good energy-saving effect. It adopts a load-sensitive plunger variable pump and a load-sensitive proportional reversing valve, which improves the control accuracy of the control system and is easy to operate.

Finally, it is noted that the above embodiments are only used to illustrate the technical solutions of the present invention without limitation. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be carried out Modifications or equivalent replacements without departing from the spirit and scope of the technical solution of the present invention shall be covered by the claims of the present invention.

Claims (3)

1. A hydraulic anti-jamming control system for a drilling rig, comprising an oil tank (22), a plunger pump (1), a multi-way reversing valve (2), a pilot oil source valve group (4), a pilot control valve group (5 ), hydraulic pilot control valve (11), hydraulic pilot control valve device (12), anti-seize valve group (6), balance valve group (7), propulsion cylinder (8), impactor (9) and brazing motor (10), characterized in that: The A1 and B1 oil passages of the first joint of the multi-way reversing valve (2) are the outlet oil passages of the first joint of the multi-way reversing valve (2); The A2 and B2 oil passages of the second joint of the multi-way reversing valve (2) are the outlet oil passages of the second joint of the multi-way reversing valve (2); The A3 and B3 oil passages of the third joint of the multi-way reversing valve (2) are the outlet oil passages of the third joint of the multi-way reversing valve (2); The P1 port of the pilot oil source valve group (4) is the oil inlet of the pilot oil source valve group (4); The P2 port of the pilot oil source valve group (4) is the oil outlet of the pilot oil source valve group (4); The oil outlet of the plunger pump (1) is respectively connected with the multi-way reversing valve (2) and the pilot oil source valve group (4), and the multi-way reversing valve (2) and the pilot oil source valve group (4) The oil return port of the cooler (21) is connected with the oil tank (22); The P2 port of the pilot oil source valve group (4) is connected with the hydraulic pilot control valve (11) and the hydraulic pilot control valve device (12), and the return of the hydraulic pilot control valve (11) and the hydraulic pilot control valve device (12) The oil port is connected to the oil tank (22), the a2' and b2' ports of the hydraulic pilot control valve device (12) are connected to the a2' and b2' ports of the pilot control valve group (5), and the hydraulic pilot control valve device (12 ) is connected to the b1 port of the multi-way reversing valve (2), and the a1, a2, b2 ports of the pilot control valve group (5) are connected to the a1, a2, b2 ports of the multi-way reversing valve (2) connection, the k1 and k2 ports of the pilot control valve group (5) are connected with the k1 and k2 ports of the anti-seize valve group (6), and the B3 of the third group and the B3 of the second group of the multi-way reversing valve (2) The M4 port is respectively connected to the k3 and k4 ports of the anti-jamming valve group; The drilling rig hydraulic anti-jamming control system also includes a first pressure gauge (13) for detecting the outlet oil pressure of the plunger pump (1), a second pressure gauge (14) for detecting the outlet oil pressure of the pilot oil source valve group (4) ), detect the third pressure gauge (15) of the propulsion cylinder (8) pressure, detect the fourth pressure gauge (16) of the brazing motor (10) reverse pressure, and detect the fifth pressure gauge of the impactor (9) pressure (17); The A1 and B1 ports of the first joint of the multi-way reversing valve (2) are connected to the A1 and B1 ports of the anti-seize valve group (6), and the A1' and B1' ports of the anti-seize valve group (6) are connected to the The balance valve group (7) is connected, and the balance valve group (7) is connected with the propulsion cylinder (8); the B2 port of the second joint of the multi-way reversing valve (2) is connected with the impactor (9), and the multi-way reversing The A2 port of the second joint of the valve (2) is closed, and the oil return port of the impactor (9) is connected to the oil tank (22); the A3 and B3 ports of the third joint of the multi-way reversing valve (2) are connected to the The motor (10) is connected, and the leakage oil outlet of the brazing motor (10) is connected with the oil tank (22); A2 ', b2 ', b1 mouth of described hydraulic pilot control valve device (12) are three oil outlets of hydraulic pilot control valve device (12); The a2', b2' ports of the pilot control valve group (5) are two oil inlets of the pilot control valve group (5); The a1, a2, b2, k2 ports of the pilot control valve group (5) are four oil outlets of the pilot control valve group (5); The k1 port of the pilot control valve group (5) is the control oil inlet of the pilot control valve group (5); The k2, k3, and k4 ports of the anti-seize valve group (6) are the control oil inlets of the anti-seize valve group (6), and the k1 ports are the control oil outlets of the anti-seize valve group (6); The M4 port of the second joint of the multi-way directional control valve (2) is the Ls signal oil outlet of the second joint of the multi-way directional control valve (2); The a1, b1, a2, b2 ports of the multi-way directional control valve (2) are four pilot control oil ports of the multi-way directional control valve (2); The A1 and B1 ports of the anti-seize valve group (6) are the two oil inlets of the anti-seize valve group (6), and the A1' and B1' ports of the anti-seize valve group (6) are anti-seize Two oil outlets of the valve group (6); The multi-way reversing valve (2) includes a safety valve (30), a first main control valve (24), a second main control valve (29), a third main control valve (213), a first compensator (31 ), the second compensator (28), the third compensator (212), the first LS relief valve (25), the second LS relief valve (26), the third LS relief valve (210), the fourth LS relief valve (214), the first shuttle valve (23), the second shuttle valve (27), the third shuttle valve (211), the first overload oil supply valve (215), the second overload oil supply valve (216 ), the third overload oil supply valve (217), the fourth overload oil supply valve (218), the fifth overload oil supply valve (219) and the sixth overload oil supply valve (220), the multi-way reversing valve ( 2) The median functions of the three main control valves are all Y-type; the A1 oil circuit of the first joint of the multi-way reversing valve (2) has the first LS relief valve (25) and the sixth overload oil supply valve (220), the B1 oil circuit of the first joint of the multi-way reversing valve (2) has a second LS relief valve (26) and a fifth overload oil supplement valve (219); the multi-way reversing valve (2) The A2 and B2 oil passages of the second joint share the third LS relief valve (210), and the B2 oil passage of the second joint of the multi-way reversing valve (2) has a third overload oil supply valve (217 ), the A2 oil passage of the second joint of the multi-way reversing valve (2) is closed; the A3 and B3 oil passages of the third joint of the multi-way reversing valve (2) share the fourth LS overflow valve (214) , the A3 and B3 oil passages of the third joint of the multi-way reversing valve (2) respectively have a first overload oil supply valve (215) and a second overload oil supply valve (216); The pilot control valve group (5) includes a directional valve (51), a two-position three-way hydraulic control valve (52) and a fourth shuttle valve (53), the a2' port of the pilot control valve group (5) is connected to the fourth shuttle valve One oil inlet port of the valve (53) is connected, the b2' and k2 ports of the pilot control valve group (5) are connected with the other oil inlet port of the fourth shuttle valve (53), and the oil outlet port of the fourth shuttle valve (53) port is connected with port a1 of the pilot control valve group (5) and port G1 of the two-position three-way hydraulic control valve (52), T1 port of the two-position three-way hydraulic control valve (52) and T2 port of the directional valve (51) port a2 of the pilot control valve group (5) is connected to the oil tank (22), the N1 port of the two-position three-way hydraulic control valve (52) is connected to the b2 port of the pilot control valve group (5), and the directional valve (51) The N2 port of the directional valve (51) is connected to the control oil chamber of the two-position three-way hydraulic control valve (52), and the G2 port of the directional valve (51) is connected to the k1 port of the pilot control valve group (5); The G1 port and the T1 port of the two-position three-way hydraulic control valve (52) are two oil inlet ports of the two-position three-way hydraulic control valve (52), and the N1 port of the two-position three-way hydraulic control valve (52) The port is the oil outlet of the two-position three-way hydraulic control valve (52); The G2 port and the T2 port of the directional valve (51) are the oil inlet of the directional valve (51), and the N2 port of the directional valve (51) is the oil outlet of the directional valve (51); The anti-seize valve group (6) includes a pressure reducing valve (61), a first sequence valve (62), a second sequence valve (65), a fifth shuttle valve (63), a two-position four-way hydraulic control reversing Valve (64), first relief valve (66), second relief valve (67), third relief valve (68), two-position two-way hydraulic control reversing valve (69), second one-way valve (610), the third check valve (611), the first built-in check valve (612), the first built-in check valve (613), the second built-in check valve (614), the third built-in check valve ( 615), the fourth built-in one-way valve (616), the fifth built-in one-way valve (617), the first damper (618) and the second damper (619), the A1 port of the anti-seize valve group (6) At the same time, it is connected with the decompression valve (61) and the second one-way valve (610), and the oil outlet of the decompression valve (61) is connected with the e1 port, the anti- The k1 port of the jamming valve group (6) is connected to the fifth built-in check valve (617), and the B1, A1', B1' ports of the anti-jamming valve group (6) are respectively connected to the two-position four-way hydraulic control reversing valve The f1, h1, g1 ports of (64) are connected, the A1' port of the anti-seize valve group (6) is connected with the control oil chamber of the second sequence valve (65), the B1 port of the anti-seize valve group (6) and The oil outlet of the pressure reducing valve (61) is connected with the two oil inlets of the fifth shuttle valve (63), and the oil outlet of the fifth shuttle valve (63) is connected with the fourth built-in one-way valve (616). The k3 port of the anti-jamming valve group (6) is connected with the first sequence valve (62); the oil outlet of the first sequence valve (62) is divided into three routes, and the first route passes through the first damper (618) and connects with two-position four The control oil chamber of the hydraulic control reversing valve (64) is connected, the second path is connected with the oil tank (22) through the second damper (619), and the third path is connected with the built-in check valve (612); the anti-seize The k4 port of the brazing valve group (6) is connected with the third built-in one-way valve (615), and the k4 port of the anti-seize valve group (6) is also connected with the third one-way valve (611), and the third one-way valve The oil outlet of the valve (611) is divided into three routes, the first route is connected to the oil tank (22) after passing through the two-position two-way hydraulic control reversing valve (69) and the second overflow valve (67), and the second route is connected to the oil tank (22) through the third overflow valve. The flow valve (68) is connected to the fuel tank (22), the third path is connected to the fuel tank (22) after passing through the second sequence valve (65) and the first overflow valve (66), and the outlet of the second sequence valve (65) Connected with the second built-in one-way valve (614), the decompression valve (61), the first sequence valve (62), the second sequence valve (65), and the two-position four-way hydraulic control reversing valve (64) The leakage oil outlet is connected with the oil tank (22); The e1 port and the f1 port of the two-position four-way hydraulic control directional valve (64) are two oil inlets of the two-position four-way hydraulic control directional valve (64), and the two-position four-way hydraulic control directional control valve The h1 and g1 ports of the valve (64) are the two oil outlets of the two-position four-way hydraulic control reversing valve (64); The hydraulic pilot control valve device includes four pressure reducing valves and a control handle for state control of the four pressure reducing valves. 2. The hydraulic anti-jamming control system of the drilling rig according to claim 1, characterized in that: the pilot oil source valve group (4) includes a pressure relief valve (41), a first one-way valve (42) and the accumulator (43), the high-pressure oil output from the plunger pump (1) passes through the P1 port of the pilot oil source valve group (4), the pressure relief valve (41) and the check valve (42) in sequence They are respectively connected with the accumulator (43) and the P2 port of the pilot oil source valve group (4), and the oil return port and the leakage oil port of the pressure relief valve (41) are connected with the oil tank (22). 3. The hydraulic anti-jamming control system of drilling rig according to claim 1, characterized in that: the plunger pump (1) is a load-sensitive plunger variable pump, and the multi-way reversing valve (2) is a load Sensitive multi-way reversing proportional valve.