CN114087518A

CN114087518A - Electric lubricating pump

Info

Publication number: CN114087518A
Application number: CN202111563336.5A
Authority: CN
Inventors: 张芷瑜; 张芷毓
Original assignee: Shanghai Limoto Machinery Co ltd
Current assignee: Shanghai Limoto Machinery Co ltd
Priority date: 2021-12-20
Filing date: 2021-12-20
Publication date: 2022-02-25
Also published as: DE202022103200U1

Abstract

An electric lubricating pump, comprising a mounting plate, a motor, a pump body and an oil tank, the aforesaid oil tank is arranged under the mounting plate, the aforesaid pump body is arranged in the oil tank, the aforesaid motor is arranged on the mounting plate and has a downward extending into the oil tank. The output shaft, which is connected to the power input end of the pump body, is characterized in that the output shaft is provided with a primary sun gear, and the power output end of the motor is provided with a planetary gear reduction mechanism. The power input end meshes with the aforesaid primary center gear for transmission, and the power output end is located in the oil tank and is connected with a propeller blade for stirring grease and capable of feeding the grease into the oil suction port of the pump body. The motor passes through the concentric reducer, the high speed of the inner ring is used for the normal pump drive, and the low speed of the outer ring is used to drive the propeller blade to stir the grease, so that the grease with a high consistency is not easy to solidify and agglomerate, and it will not be easy to solidify and agglomerate on the helical surface of the propeller blade. It is fed to the oil suction port of the pump body under the action of pressure feeding.

Description

Electric lubricating pump

Technical Field

The invention relates to a grease lubrication pump, in particular to a motor-driven grease lubrication pump.

Background

The lubricating grease is generally suitable for being used as a lubricating medium for heavy-load low-speed equipment such as vehicles, power generation equipment, forging equipment, papermaking machinery, engineering machinery, textile machinery and the like. Compared with thin oil lubrication, grease lubrication not only is beneficial to long oil film retention time and difficult loss, has good bearing and shock resistance effects, but also effectively prevents the invasion of dirty impurities, such as dust, water vapor, fluff and the like. The newly added grease at each time can conveniently extrude the old grease and dirty impurities out of the friction pair, and the wear-reducing and wear-resisting effects are obvious. The electric fixed-point quantitative centralized grease lubricating device is formed by matching an electric grease lubricating pump with a quantitative distributor, a pipeline and pipeline accessories. The electric grease lubricating pump can be divided into the following parts according to the arrangement positions of the motor and the oil tank: the forward electric grease lubricating pump features the motor, circuit control board, etc. on the upper part and the oil tank on the lower part; the inverted electric grease lubricating pump features that the motor and circuit control board are set below and the oil tank is set above.

The advantage of the electronic grease lubricant pump of the formula of putting in the same direction: when the grease is added into the oil tank, the worry about not bringing air is not needed, the use and the maintenance are convenient, the defects are that the most diluted 000# grease can be used, the grease with the consistency of 00# and above cannot reach the oil suction area during oil pumping due to poor fluidity, the suction phenomenon is caused, and the application range of a lubricating medium is limited. For the related documents, reference may be made to "an electric grease automatic lubricating pump" (an authorized publication number is CN212430413U) in chinese utility model patent No. ZL 202021046283.0; reference may also be made to the chinese utility model patent No. ZL202023141653.1, "electric lubricating pump and lubricating device having the same" (No. CN 214222714U).

The inverted electric grease lubricating pump has the advantages that: because the oil tank and the grease are arranged above and are generally provided with the suction-assisting piston or the suction-assisting blade, the grease pump is suitable for thicker grease such as 00#, 0#, 1#, and 2# grease which can be normally used in an environment with the temperature not lower than-10 ℃. The inverted grease pump with the suction-assisting piston has the disadvantages that when grease is added into an oil tank, air is not brought in, otherwise, the grease is troublesome to process, and more grease is wasted when air is discharged; for the inverted grease pump with the suction-assisting blade, when grease is added into the oil tank, once dirty sundries are brought into the oil tank to block the filter screen, the oil tank (oil tank) needs to be detached, and much grease is wasted. If an external refueling filter is arranged, the installation is troublesome, the occupied space of the pipe arrangement is large, and the cost is increased. For the related documents, reference may be made to the chinese utility model patent "micro electric grease pump" with patent number ZL201920258647.2 (publication number CN 209569517U); reference may also be made to CN211853486U, CN206973253U, etc.

Disclosure of Invention

The invention aims to solve the technical problem of providing a forward electric lubricating pump suitable for high-consistency grease aiming at the technical current situation.

The technical scheme adopted by the invention for solving the technical problems is as follows: the utility model provides an electric lubricating pump, includes mounting panel, motor, the pump body and oil tank, and the mounting panel below is located to aforementioned oil tank, and in the oil tank was located to aforementioned pump body, on the mounting panel was located to aforementioned motor and had the output shaft that stretches into the oil tank downwards, this output shaft with aforementioned pump body power input end be connected, its characterized in that be equipped with one-level sun gear on the output shaft, the power take off of motor is equipped with planetary gear reduction mechanism, this planetary gear reduction mechanism's power input end and the meshing transmission of aforementioned one-level sun gear, power take off end is located the oil tank and is connected with and be used for stirring the grease and can send into the screw blade of pump body oil absorption mouth with the grease.

Preferably, the pump body is located below the propeller blades.

The power output end of the planetary gear speed reducing mechanism is provided with a sleeve, the middle part of the sleeve is provided with a shaft hole for the output shaft to penetrate through, the propeller blades are a plurality of and are radially arranged on the periphery of the sleeve at intervals, and the pump body is positioned under the sleeve. The grease is collected to the oil inlet direction of the pump body after the propeller blades are stirred, and the pump body is ensured to eat the grease.

Preferably, the planetary gear reduction mechanism comprises a gear box, a gear ring and at least two planetary gear trains, each planetary gear train comprises a sun gear, a planet carrier and a planetary gear engaged with the gear ring, at least two planetary gears are arranged on the front end surface of the planet carrier at the same stage, the sun gear is arranged on the back surface of the planet carrier at the previous stage and is hollow for an output shaft to pass through, the sun gear is engaged with the adjacent planetary gear for transmission, and the planet carrier is provided with a through hole for the output shaft to pass through; the first-stage planetary gear is meshed with the first-stage central gear; the planet carrier of the last-stage planetary gear train is matched with the gear box in a rotating way to form a power output end of the planetary gear speed reducing mechanism.

Preferably, the planetary gear reduction mechanism is a three-stage planetary gear train and comprises

The primary planet carrier is positioned in the gear ring;

the primary planet gear is arranged on the front end surface of the primary planet carrier;

the second-stage sun gear is arranged on the rear end face of the first-stage planet carrier;

the secondary planet carrier is positioned in the gear ring;

the second-stage planet gear is arranged on the front end surface of the second-stage planet carrier;

the third-stage sun gear is arranged on the rear end face of the second-stage planet carrier;

the three-stage planet carrier is in running fit with the gear box to form a low-rotating-speed and high-torque power output end of the planetary gear speed reducing mechanism; and

and the third-stage planetary gear is arranged on the front end surface of the third-stage planet carrier.

Furthermore, the outer end face of the three-stage planet carrier is provided with at least two connecting rods in the direction parallel to the output shaft, the end parts of the connecting rods are provided with sleeves, the middle parts of the sleeves are provided with shaft holes through which the output shafts penetrate, and the propeller blades are arranged on the periphery of the sleeves at intervals.

Considering the easy to assemble of the pump body, the lower terminal surface of mounting panel is equipped with the pump support, and this pump support includes an at least pole setting and locates the locating plate of pole setting lower extreme, and the upper end of aforementioned pole setting is connected with the lower terminal surface of mounting panel, the pump body locate on the locating plate.

The pole setting has the wire for cavity and inside arrangement, the locating plate is last to have the constant head tank, is equipped with the heating plate in this constant head tank, and this heating plate is connected with aforementioned wire. The uprights here act as wire guides in addition to the connecting function. So that the leads of the heating plate are not adhered by grease, and the maintenance is facilitated.

The upright stanchion is hollow to form an oil passage, the upper end of the upright stanchion is externally connected with an oil outlet joint, the lower end of the upright stanchion is connected with an oil pipe, and the oil pipe is connected with the oil outlet end of the pump body. The upright stanchion not only has the connecting function but also has the function of an oil path channel, reduces the arrangement of the oil path on the inner wall and also can reduce the risk of grease leakage.

The cross section of the lower end of the oil tank is generally circular, and the upright posts are arranged closely to the inner wall of the oil tank. The circular shape is matched with the moving track of the blades of the stirring propeller, so that the grease of the oil tank can be swept, no missing dead angle is ensured, and the utilization rate of the grease is improved.

Compared with the prior art, the invention has the advantages that: the motor outputs two paths of concentric power through the concentric reducer, one path is the main power for driving the pump body by high-speed rotation, and the other path is the auxiliary power for driving the propeller blades by low-speed rotation after the speed reduction and torque increase of the planetary reducer. The high-rotation-speed driving device has the advantages that the high-rotation-speed driving device is used for driving the normal pump body to drive the inner ring, the low-rotation-speed large-torque driving device is used for driving the blades to stir grease, so that the grease with high consistency is not easy to solidify and agglomerate, the grease is fed to the oil suction port of the pump body under the pressure feeding effect of the spiral surface of the propeller blades, the propeller blades are equivalent to the effect of the spiral pump, the high-consistency grease can be normally used, and the grease consistency application range of the forward type electric grease lubricating pump is expanded.

Drawings

FIG. 1 is a schematic structural diagram of an embodiment.

Fig. 2 is a bottom view of the embodiment.

Fig. 3 is a perspective sectional view of the embodiment.

FIG. 4 is a schematic structural diagram of the embodiment after removing the casing and the oil phase.

Fig. 5 is a schematic view of fig. 4 from another view angle.

FIG. 6 is a schematic view of a pump bracket according to an embodiment.

Fig. 7 is a partially exploded view of fig. 6.

Fig. 8 is a reverse side view of the portion of the positioning plate of fig. 7.

Fig. 9 is a combined diagram of the motor and the gearbox in the embodiment.

Fig. 10 is an exploded view of fig. 9.

Fig. 11 is an exploded view from another perspective of fig. 10.

Detailed Description

The invention is described in further detail below with reference to the accompanying examples.

As shown in fig. 1, 3, 4 and 5, the electric lubricating pump in this embodiment includes a mounting plate 30, a motor 1, a planetary gear reduction mechanism 5, a pump body 3, a pump bracket 4 and an oil tank 10, the oil tank 10 is disposed below the mounting plate 30, the pump body 3 is disposed in the oil tank 10, the motor 1 is disposed on the mounting plate 30 and has an output shaft 11 extending downward into the oil tank 10, the output shaft 11 is connected to a power input end of the pump body 3, a primary sun gear 51 is disposed on the output shaft 11, the power output end of the motor 1 is provided with the planetary gear reduction mechanism 5, the power input end of the planetary gear reduction mechanism 5 is in meshing transmission with the primary sun gear 51, the power output end is located in the oil tank 10 and is connected to a propeller blade 2 for stirring grease and feeding the grease into an oil suction port of the pump body, a cover plate 20 is disposed on the mounting plate 30, and an outer periphery of the motor 1 is located in the cover plate 20. The propeller blades 2 in this embodiment have three (or two or more) blades, which are uniformly arranged, and the propeller blades 2 stir the grease to promote flow, and at the same time, the screw surfaces of the propeller blades provide pressure feeding force for the grease to the oil suction port of the pump body.

As shown in fig. 2, the cross section of the lower end of the oil tank 10 is substantially circular, and the circular shape is matched with the moving track of the stirring propeller blades, so that the grease in the oil tank 10 can be swept, and can be fed to the oil suction port of the pump body, thereby ensuring that no dead angle is left, and being beneficial to improving the utilization rate of the grease.

As shown in fig. 9, 10, and 11, the planetary gear reduction mechanism 5 in the present embodiment is a three-stage planetary gear train, and specifically includes a gear box 56, a ring gear 54, a primary carrier 71, a primary pinion 61, a secondary sun gear 52, a secondary carrier 72, a secondary pinion 62, a tertiary sun gear 53, a tertiary carrier 73, and a tertiary pinion 63.

The primary planetary gear 61, the secondary planetary gear 62, and the tertiary planetary gear 63 are all engaged with the internal teeth of the ring gear 54. The primary planet carrier 71 and the secondary planet carrier 72 are located within the ring gear 54; the number of the primary planet gears 61 is three, and the three primary planet gears are arranged on the front end surface of the primary planet carrier 71 and are in meshing transmission with the primary sun gear 51.

The secondary sun gear 52 is arranged on the rear end face of the primary planet carrier 71; the number of the secondary planet gears 62 is three, and the three secondary planet gears are arranged on the front end surface of the secondary planet carrier 72 and are in meshing transmission with the secondary sun gear 52.

The third-stage sun gear 53 is arranged on the rear end face of the second-stage planet carrier 72; the third-stage planet carrier 73 is in running fit with the gear box 56 through the bearing 55, and the third-stage planet carrier 73 forms a power output end of the planetary gear speed reducing mechanism 5; three third-stage planetary gears 63 are also provided, and are arranged on the front end face of the third-stage planet carrier 73 and are in meshing transmission with the third-stage sun gear 53.

The output shaft 11 in this embodiment passes through the first stage carrier 71, the second stage sun gear 52, the second stage carrier 72, the third stage sun gear 53, and the third stage carrier 73 in this order.

The outer end face of the third-stage planet carrier 73 is provided with four connecting rods 22 parallel to the direction of the output shaft 11, the end parts of the connecting rods 22 are provided with a sleeve 21, the middle part of the sleeve 21 is provided with a shaft hole for the output shaft 11 to penetrate through, and the three propeller blades 2 are radially arranged on the periphery of the sleeve 21 at intervals. The pump body 3 is located directly below the sleeve 21, and the pump body 3 in this embodiment is preferably a gear pump.

The motor 1 provides a power source for the pump body through the output shaft 11 on one hand, and provides rotary power for the propeller blades through the planetary gear speed reducing mechanism 5 on the other hand, so that the two powers are concentrically arranged, wherein the rotating speed of the output shaft is greater than that of the propeller blades, the rotating speed of the output shaft is more than 2000r/min, and the rotating speed of the propeller blades is less than 50 r/min. The grease that the screw blade was stirred back converges to the oil inlet direction of the pump body, ensures that the pump body can eat the grease, and the grease of using in this embodiment can expand to 00#, 0#, 1#, 2# grease.

Referring to fig. 6, 7 and 8, the lower end surface of the mounting plate 30 is provided with a pump bracket 4, the pump bracket 4 includes four vertical rods 42 and a positioning plate 41 disposed at the lower end of the vertical rods 42, the four vertical rods 42 are distributed at four corners of a rectangle, and the vertical rods are disposed closely to the inner wall of the oil tank 10. The upper end of the vertical rod 42 is connected with the lower end face of the mounting plate 30, and the pump body 3 is arranged on the positioning plate 41. The oil tank 10 in this embodiment has four outwardly convex semi-cylindrical chambers around it for receiving the columns 42 without affecting the circumferential fit space for the propeller blades to rotate.

One of the upright rods 42 is hollow and has a wire 46 arranged therein, the positioning plate 41 has a positioning slot 411, a heating plate 44 is disposed in the positioning slot 411, and the heating plate 44 is connected to the wire 46. The heating plate 44 may be PTC, which increases the temperature of the grease during operation, thereby providing fluidity. The other upright rod 42 is hollow to form an oil passage, the upper end of the other upright rod is externally connected with an oil outlet joint 45, the lower end of the other upright rod is connected with an oil pipe 43, and the oil pipe 43 is connected with the oil outlet end of the pump body 3. The upright 42 here functions as an oil channel and a wire guide in addition to the connecting function.

During assembly, the motor 1 and the planetary gear reduction mechanism 5 are arranged on the mounting plate 30 as an integrated piece, then the assembly consisting of the propeller blades, the sleeve and the connecting rod is assembled with the three-stage planet carrier 73 into a whole, then the pump bracket provided with the pump body is fixedly connected with the mounting plate to form a main body, and finally the oil tank 10 is sleeved at the lower end of the mounting plate. The whole body is convenient to disassemble and assemble and is beneficial to maintenance.

This embodiment can also set up and refuel the filter, effectively guarantees to add the grease cleanliness of oil tank, when refueling the resistance and increase, screws off and refuels the filter, conveniently washs the filter core for the routine maintenance work is simple swift, and ordinary operative employee sees at a glance will. Overflow valve, automatic pressure relief valve etc. all set up on the mounting panel, keep away from the pump body oil absorption district, and the superiors of grease in the oil tank is spilt to the grease that the consistency of the outflow of overflow valve overflow mouth, pressure relief valve off-load mouth becomes thin, guarantees that the grease of oil pump oil suction opening is normal consistency to avoid long-time pump oil pressure phenomenon lower and lower more. And the pressure regulating mechanism of the overflow valve is arranged outside the mounting plate, so that the output pressure can be conveniently regulated.

Claims

1. An electric lubricating pump, comprising a mounting plate (30), a motor (1), a pump body (3) and an oil tank (10), the aforementioned oil tank (10) is arranged below the mounting plate (30), and the aforementioned pump body ( 3) Set in the fuel tank (10), the aforementioned motor (1) is set on the mounting plate (30) and has an output shaft (11) extending downward into the fuel tank (10), and the output shaft (11) is the same as the aforementioned motor (11). The pump body (3) is connected to the power input end, characterized in that the output shaft (11) is provided with a primary sun gear (51), and the power output end of the motor (1) is provided with a planetary gear reduction mechanism (5), The power input end of the planetary gear reduction mechanism (5) meshes with the aforesaid first-stage central gear (51) for transmission, and the power output end is located in the oil tank (10) and is connected with a grease for stirring and feeding the grease into the oil suction port of the pump body. propeller blades (2).

2 . The electric lubricating pump according to claim 1 , wherein the pump body ( 3 ) is located below the propeller blades ( 2 ). 3 .

3. The electric lubricating pump according to claim 2, characterized in that the power output end of the planetary gear reduction mechanism (5) is provided with a sleeve (21), and the middle of the sleeve (21) has an output shaft (11). ) passing through the shaft hole, the propeller blades (2) are a plurality of and radially arranged on the outer periphery of the sleeve (21), and the pump body (3) is located on the outer circumference of the sleeve (21). Directly below.

4. The electric lubricating pump according to claim 1, characterized in that the planetary gear reduction mechanism (5) comprises a gear box (56), a ring gear (54) and at least two-stage planetary gear trains. The planetary gear train includes a sun gear, a planet carrier, and a planetary gear meshing with the aforementioned ring gear (54). At least two of the aforementioned planetary gears are arranged in parallel on the front end surface of the planetary carrier of the same stage, and the aforementioned sun gear is arranged on the front end of the preceding stage. The back of the planet carrier is hollow for the output shaft (11) to pass through, the sun gear meshes with the adjacent planetary gears for transmission, and the planet carrier has a through hole for the output shaft (11) to pass through; The first-stage sun gear (51) meshes; the planetary carrier of the final-stage planetary gear train and the gear box (56) rotate and cooperate to form the power output end of the planetary gear reduction mechanism (5), which is used to drive the propeller blades.

5. The electric lubricating pump according to claim 4, characterized in that the planetary gear reduction mechanism (5) is a three-stage planetary gear train and includes

a first-level planet carrier (71), located in the ring gear (54);

A first-stage planetary gear (61), located on the front end face of the first-stage planetary carrier (71);

The secondary sun gear (52) is arranged on the rear end surface of the aforesaid primary planet carrier (71);

a secondary planet carrier (72) located in the ring gear (54);

a secondary planetary gear (62), arranged on the front end face of the aforementioned secondary planetary carrier (72);

The third-stage sun gear (53) is arranged on the rear end face of the aforementioned second-stage planet carrier (72);

A three-stage planetary carrier (73) is rotatably cooperated with the gear box (56) to form a power output end of the planetary gear reduction mechanism (5); and

The third-stage planetary gear (63) is provided on the front end surface of the third-stage planetary carrier (73).

6. The electric lubricating pump according to claim 5, characterized in that at least two connecting rods (22) are provided on the outer end face of the three-stage planet carrier (73) in a direction parallel to the output shaft (11). The end is provided with a sleeve (21), the middle of the sleeve (21) has a shaft hole for the output shaft (11) to pass through, and the propeller blades (2) are multiple and radially arranged on the sleeve at intervals (21) on the periphery.

7. The electric lubricating pump according to claim 1, characterized in that the lower end surface of the mounting plate (30) is provided with a pump support (4), the pump support (4) comprising at least one vertical rod (42) and a set of On the positioning plate (41) at the lower end of the vertical rod (42), the upper end of the vertical rod (42) is connected with the lower end surface of the mounting plate (30), and the pump body (3) is arranged on the positioning plate (41).

8. The electric lubricating pump according to claim 7, characterized in that the vertical rod (42) is hollow and internally arranged with a wire (46), the positioning plate (41) has a positioning groove (411), the A heating piece (44) is arranged in the positioning groove (411), and the heating piece (44) is connected with the aforementioned wire (46).

9 . The electric lubricating pump according to claim 7 , wherein the vertical rod ( 42 ) is hollow to form an oil passage, the upper end is connected to an oil outlet joint ( 45 ), and the lower end is connected to an oil pipe ( 43 ), the oil pipe ( 43 ). ) is connected to the oil outlet end of the pump body (3).

10. The electric lubricating pump according to claim 7, characterized in that the cross section of the lower end of the oil tank (10) is substantially circular, and the upright column is disposed close to the inner wall of the oil tank (10).