CN106979858B - Durability experiment device for diesel engine camshaft - Google Patents

Abstract

The invention discloses a durability test device of a diesel engine camshaft, which comprises a base, wherein a first guide pillar, a second guide pillar, a third guide pillar and a fourth guide pillar are fixedly arranged at four corners of the base respectively, and a fifth guide pillar is also arranged on the base between the second guide pillar and the third guide pillar; a first force application mechanism is arranged between the first guide pillar and the second guide pillar, a second force application mechanism is arranged between the third guide pillar and the fourth guide pillar, a third force application mechanism is arranged between the third guide pillar and the fifth guide pillar, the end parts of the first force application mechanism, the second force application mechanism and the third force application mechanism are fixedly connected with a balancing weight, and the balancing weight and a fixed seat on the upper part of the base jointly position the camshaft. The camshaft positioning device is simple in structure, can effectively position and adjust the position of the camshaft, and avoids inaccuracy of durability tests.

Description

An experimental device for the durability performance of a diesel engine camshaft

Technical field:

The invention relates to the technical field of diesel engine parts, in particular to a durability performance experiment device of a diesel engine camshaft.

Background technique:

The camshaft is a part of the piston engine. Its function is to control the opening and closing of the valve. Usually, its speed is still high, and it needs to bear a large torque. Therefore, the design of the camshaft in terms of strength and support The requirements are very high, and its material is generally high-quality alloy steel or alloy steel. Because the valve movement law is related to the power and running characteristics of an engine, the camshaft design plays a very important role in the engine design process. Considering the operating characteristics of the camshaft, before the camshaft is mass-produced, a durability test needs to be carried out to determine whether the durability of the camshaft meets the standard. The common camshaft durability test device has a complicated structure, and the assembly and disassembly process is time-consuming. strenuous.

Invention content:

The object of the present invention is to provide a kind of durability experiment device of diesel engine camshaft aiming at the deficiencies of the prior art.

To achieve the above object, technical solutions of the present invention are as follows:

A kind of durability experiment device of diesel engine camshaft, it comprises base, and the four corner positions of base are respectively fixed with the first guide post, the second guide post, the third guide post and the fourth guide post, the second guide post and the A fifth guide post is also provided on the base between the three guide posts; a first force application mechanism is provided between the first guide post and the second guide post, and a second force application mechanism is provided between the third guide post and the fourth guide post. Force application mechanism, a third force application mechanism is arranged between the third guide post and the fifth guide post, and the ends of the first force application mechanism, the second force application mechanism and the third force application mechanism are all fixedly connected with the counterweight , the counterweight and the fixing seat on the upper part of the base jointly position the camshaft; the first force applying mechanism includes a first fixing plate, and the two ends of the first fixing plate are fixed on the upper parts of the first guide post and the second guide post, and The upper part is provided with a first lead screw, the upper end of the first lead screw is fixed with a first handle, the upper part of the first lead screw is threadedly connected with a first lifting plate, and the two ends of the first lifting plate are sleeved on the first guide post and the second On the second guide post, the first lifting plate is provided with a first slide rail, the first slide rail is slidably provided with a first slider, the front end of the first slider is fixed with a first adjustment seat, and the first adjustment seat is provided with a The first cylinder, the piston rod of the first cylinder is connected with a first rotating member, the end of the first rotating member is provided with a first force application rod, and the first force application rod is hinged with the counterweight; the second force application mechanism includes The second fixed plate, the two ends of the second fixed plate are fixed on the top of the third guide post and the fourth guide post, the top of which is provided with a second lead screw, the upper end of the second lead screw is fixed with a second handle, the second wire The upper part of the bar is threaded with a second lifting plate, and the two ends of the second lifting plate are sleeved on the third guide post and the fourth guide post. The second lifting plate is provided with a second slide rail, and the second slide rail slides A second slider is provided, the front end of the second slider is fixed with a second adjustment seat, the second adjustment seat is provided with a second cylinder, the piston rod of the second cylinder is connected with a second rotating part, and the second rotating part The end is provided with a second force applying rod, the second force applying rod is hinged with the counterweight; the third force applying mechanism includes a third fixed plate, and the two ends of the third fixed plate are fixed on the third guide post and the fifth guide post. The upper part is provided with a third lead screw, the upper end of the third lead screw is fixed with a third handle, the upper part of the third lead screw is threaded with a third lifting plate, and the two ends of the third lifting plate are sleeved on the third guide On the column and the fifth guide column, a lower slide rail is arranged on the third lifting plate, a lower slide seat is arranged on the lower slide rail, a third slide block is slidably arranged on the lower slide seat, and a first slide block is fixed on the front end of the third slide block. Three adjustment seats, the third adjustment seat is provided with a third cylinder, the piston rod of the third cylinder is connected with a third rotating member, and the end of the third rotating member is provided with a third force applying rod. The weight is hinged; the fixed seat includes a first support and a second support, the first support is hinged with a fixed plate, the upper part of the fixed plate is provided with a fixed frame, the second support is hinged with a swing seat, the swing seat and the second A positioning piece is arranged between the supports, an adjusting screw is fixed on the swing seat, and the adjusting screw is hinged to the fixing plate.

The counterweight is provided with a second displacement sensor, and the fixed base is provided with a first displacement sensor.

A locking piece is arranged between the first lifting plate and the first guide post and the second guide post.

The base is made of square steel plate, and the base is fixedly installed on the test bench by fastening bolts.

The height and diameter of the first guide pillar, the second guide pillar, the third guide pillar, the fourth guide pillar and the fifth guide pillar are the same.

The base is provided with a first socket, a second socket, a third socket, a fourth socket and a fifth socket for respectively installing the first guide post, the second guide post, the third guide post, the fourth guide post and the fifth guide post .

The beneficial effect of the present invention is that: the present invention has a simple structure, can effectively locate and adjust the camshaft, and avoid inaccurate durability tests.

Description of drawings:

Fig. 1 is a structural representation of the present invention;

Fig. 2 is a side view of the present invention;

Fig. 3 is the structural schematic diagram of fixing seat;

Fig. 4 is a structural schematic diagram of the counterweight.

Detailed ways:

In order to make the above objects, features and advantages of the present invention more comprehensible, specific implementations of the present invention will be described in detail below in conjunction with the accompanying drawings.

As shown in Fig. 1-4, a kind of durability experiment device of diesel engine camshaft, it comprises base 10, and the four corner positions of base 10 are respectively fixed with the first guide post 111, the second guide post 112, the third guide post 113 and the fourth guide post 114, the base 10 between the second guide post 112 and the third guide post 113 is also provided with a fifth guide post; between the first guide post 111 and the second guide post 112 is provided with a first Force application mechanism, a second force application mechanism is arranged between the third guide post 113 and the fourth guide post 114, a third force application mechanism is provided between the third guide post 113 and the fifth guide post, and the first force application mechanism , the ends of the second force applying mechanism and the third force applying mechanism are all fixedly connected with the counterweight 4, and the counterweight 4 and the fixed seat 2 on the top of the base 10 jointly position the camshaft 6; the first force applying mechanism includes The first fixed plate 121, the two ends of the first fixed plate 121 are fixed on the top of the first guide post 111 and the second guide post 112, and the first lead screw 16 is arranged on the top, and the first lead screw 16 is fixed on the upper end of the first lead screw 16. A handle 17, the top of the first lead screw 16 is threadedly connected with a first lifting plate 131, the two ends of the first lifting plate 131 are sleeved on the first guide post 111 and the second guide post 112, on the first lifting plate 131 The first slide rail 14 is provided, the first slide block 151 is slidably arranged on the first slide rail 14, the front end of the first slide block 151 is fixed with a first adjustment seat 153, and the first adjustment seat 153 is provided with a first cylinder 31 , the piston rod of the first cylinder 31 is connected with a first rotating member 311, the end of the first rotating member 311 is provided with a first force application rod 312, and the first force application rod 312 is hinged with the counterweight 4; Force mechanism comprises second fixed plate 123, and the two ends of second fixed plate 123 are fixed on the top of the 3rd guide post 113 and the 4th guide post 114, and its top is provided with the second lead screw, and the upper end of the second lead screw is fixed with The second handle, the top of the second lead screw is threadedly connected with a second lifting plate 133, and the two ends of the second lifting plate 133 are sleeved on the third guide post 113 and the fourth guide post 114, and the second lifting plate 133 is provided with There is a second slide rail, a second slide block 152 is slidably arranged on the second slide rail, a second adjustment seat is fixed on the front end of the second slide block 152, a second cylinder 33 is arranged on the second adjustment seat, and the second cylinder 33 The second rotating part is connected to the piston rod of the second rotating part, and the end of the second rotating part is provided with a second force applying rod. The second force applying rod is hinged with the counterweight 4; The two ends of three fixing plates 122 are fixed on the top of the third guide post 113 and the fifth guide post 115, the top of which is provided with the third lead screw, the upper end of the third lead screw is fixed with the third handle, the top of the third lead screw A third lifting plate 132 is threaded, and the two ends of the third lifting plate 132 are sleeved on the third guide post 113 and the fifth guide post 115. The third lifting plate 132 is provided with a lower slide rail 320, and the lower slide rail 320 A lower sliding seat 154 is arranged on the top, and a third sliding block is slidably arranged on the lower sliding seat 154. The front end of the third sliding block is fixed with a third adjusting seat, and the third adjusting seat is provided with a third cylinder 32. The third air cylinder 32 A third rotating part is connected to the piston rod of the third rotating part, and the end of the third rotating part is provided with a third applying rod. The third applying rod is hinged with the weight 4; the fixed base 2 includes a first support 21 and a second support Seat 22, the first support 21 is hinged with a fixed plate 20, the upper part of the fixed plate 20 is provided with a fixed frame 201, the second support 22 is hinged with a swing seat 24, and a positioning bracket is provided between the swing seat and the second support 22. Part 25, the swing seat 24 is fixed with an adjusting screw 23, and the adjusting screw 23 is hinged with the fixed plate 20.

The counterweight 4 is provided with a second displacement sensor 52 , and the fixed base 2 is provided with a first displacement sensor 51 .

A locking member 18 is disposed between the first lifting plate 131 and the first guide post 111 and the second guide post 112 .

The base 10 is made of a square steel plate, and the base 10 is fixedly installed on the test bench by fastening bolts.

The height and diameter of the first guide post 111 , the second guide post 112 , the third guide post 113 , the fourth guide post 114 and the fifth guide post are the same.

The base 10 is provided with a first socket, a second socket, a third socket, a fourth socket and the fifth socket.

Working process: Before the durability test, the camshaft is fixed between the fixed seat and the counterweight, because the counterweight is hingedly connected with the first force applying mechanism, the second force applying mechanism and the third force applying mechanism , the first force application mechanism, the second force application mechanism, and the third force application mechanism can effectively adjust the position of the counterweight, which enables the camshaft to be accurately positioned, making the durability test more accurate.

The examples are used to illustrate the present invention, but not to limit the present invention. Any person skilled in the art can modify the embodiments without departing from the spirit and scope of the present invention. Therefore, the protection scope of the present invention should be listed in the claims of the present invention.

Claims (6)

1. The utility model provides a durability experimental apparatus of diesel engine camshaft which characterized in that: the device comprises a base (10), wherein a first guide post (111), a second guide post (112), a third guide post (113) and a fourth guide post (114) are fixedly arranged at four corners of the base (10) respectively, and a fifth guide post is also arranged on the base (10) between the second guide post (112) and the third guide post (113); a first force application mechanism is arranged between the first guide pillar (111) and the second guide pillar (112), a second force application mechanism is arranged between the third guide pillar (113) and the fourth guide pillar (114), a third force application mechanism is arranged between the third guide pillar (113) and the fifth guide pillar, the end parts of the first force application mechanism, the second force application mechanism and the third force application mechanism are fixedly connected with a balancing weight (4), and the balancing weight (4) and a fixed seat (2) on the upper part of the base (10) jointly position the camshaft (6); the first force application mechanism comprises a first fixing plate (121), two ends of the first fixing plate (121) are fixed to the upper portions of the first guide column (111) and the second guide column (112), a first lead screw (16) is arranged at the upper portion of the first fixing plate, a first handle (17) is fixed to the upper end of the first lead screw (16), a first lifting plate (131) is in threaded connection with the upper portion of the first lead screw (16), two ends of the first lifting plate (131) are sleeved on the first guide column (111) and the second guide column (112), a first sliding rail (14) is arranged on the first lifting plate (131), a first sliding block (151) is arranged on the first sliding rail (14) in a sliding mode, a first adjusting seat (153) is fixed to the front end of the first sliding block (151), a first air cylinder (31) is arranged on the first adjusting seat (153), a first rotating piece (311) is connected to a piston rod of the first air cylinder (31), a first force application rod (312) is arranged at the end of the first rotating piece (311), and the first force application rod (312) is hinged to the counterweight block (4); the second force application mechanism comprises a second fixing plate (123), two ends of the second fixing plate (123) are fixed to the upper portions of the third guide post (113) and the fourth guide post (114), a second lead screw is arranged at the upper portion of the second lead screw, a second handle is fixed to the upper end of the second lead screw, a second lifting plate (133) is in threaded connection with the upper portion of the second lead screw, two ends of the second lifting plate (133) are sleeved on the third guide post (113) and the fourth guide post (114), a second sliding rail is arranged on the second lifting plate (133), a second sliding block (152) is arranged on the second sliding rail in a sliding mode, a second adjusting seat is fixed to the front end of the second sliding block (152), a second air cylinder (33) is arranged on the second adjusting seat, a second rotating piece is connected to a piston rod of the second air cylinder (33), and a second force application rod hinged to the counterweight block (4) is arranged at the end of the second rotating piece; the third force application mechanism comprises a third fixing plate (122), two ends of the third fixing plate (122) are fixed on the upper parts of a third guide column (113) and a fifth guide column (115), a third lead screw is arranged at the upper part of the third fixing plate, a third handle is fixed at the upper end of the third lead screw, a third lifting plate (132) is in threaded connection with the upper part of the third lead screw, two ends of the third lifting plate (132) are sleeved on the third guide column (113) and the fifth guide column (115), a lower sliding rail (320) is arranged on the third lifting plate (132), a lower sliding seat (154) is arranged on the lower sliding rail (320), a third sliding block is arranged on the lower sliding seat (154) in a sliding manner, a third adjusting seat is fixed at the front end of the third sliding block, a third air cylinder (32) is arranged on the third adjusting seat, a third rotating piece is connected to a piston rod of the third air cylinder (32), and a third force application rod arranged at the end of the third rotating piece is hinged to the counterweight block (4); the fixing seat (2) comprises a first support (21) and a second support (22), a fixing plate (20) is hinged to the first support (21), a fixing frame (201) is arranged on the upper portion of the fixing plate (20), a swinging seat (24) is hinged to the second support (22), a positioning piece (25) is arranged between the swinging seat and the second support (22), an adjusting screw rod (23) is fixed to the swinging seat (24), and the adjusting screw rod (23) is hinged to the fixing plate (20).

2. The durability test device of the diesel engine camshaft according to claim 1, characterized in that: a second displacement sensor (52) is arranged on the balancing weight (4), and a first displacement sensor (51) is arranged on the fixed seat (2).

3. The durability test device of the diesel engine camshaft according to claim 1, characterized in that: locking pieces (18) are arranged between the first lifting plate (131) and the first guide post (111) and the second guide post (112).

4. The durability test device of the diesel engine camshaft according to claim 1, characterized in that: the base (10) is made of a square steel plate, and the base (10) is fixedly installed on the test workbench through fastening bolts.

5. The durability test device of the diesel engine camshaft according to claim 1, characterized in that: the first guide post (111), the second guide post (112), the third guide post (113), the fourth guide post (114) and the fifth guide post have the same height and diameter.

6. The durability test device of the diesel engine camshaft according to claim 1, characterized in that: a first socket, a second socket, a third socket, a fourth socket and a fifth socket are respectively provided on the base (10), wherein the first guide post (111), the second guide post (112), the third guide post (113), the fourth guide post (114) and the fifth guide post are respectively arranged on the first socket, the second socket, the third socket, the fourth socket and the fifth socket.

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