Supporting tool for testing crankshaft combined mechanism of reciprocating piston compressor

Abstract

The utility model relates to the technical field of crankshaft testing equipment, in particular to a supporting tool for testing a reciprocating piston compressor crankshaft combined mechanism, which comprises a supporting table, a clamping assembly and a driving assembly, the clamping assembly and the driving assembly are arranged on the supporting table with a cushioning function, and the clamping assembly comprises two clamping plates which are arranged in a sliding manner. The driving assembly is arranged at the lower end of the supporting table, the two clamping plates can be linked through the driving assembly to stably and rapidly clamp the crankshaft combination mechanism, and the testing efficiency is improved; in addition, the supporting tool further has the advantages of being simple in structure, convenient to operate, low in testing cost and the like, stable and rapid supporting can be provided for testing the dynamic balance performance of the compressor crankshaft combined mechanism, meanwhile, the testing efficiency can be improved, and the testing cost is reduced. And the subsequent more effective targeted improvement on the compressor crankshaft combined mechanism is facilitated.

Description

Technical Field

[0001] This utility model relates to the technical field of crankshaft testing equipment, specifically to a support fixture for testing the crankshaft assembly mechanism of a reciprocating piston compressor. Background Technology

[0002] As a core component of an engine, the dynamic balance performance of the crankshaft directly affects the engine's operational stability and service life. Therefore, accurate dynamic balance measurement of the crankshaft is crucial. However, to better understand the overall performance of the compressor, simply verifying the dynamic balance performance of the crankshaft during rotation is insufficient. It is necessary to assemble the crankshaft with the required components, such as bearings, gears, and bushings, before testing. However, testing the compressor crankshaft assembly requires a stable and quickly installable support platform. Based on this, to better test the dynamic balance performance of the compressor crankshaft assembly, we propose a support fixture for testing the compressor crankshaft assembly. Utility Model Content

[0003] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a support fixture for testing the crankshaft assembly mechanism of a reciprocating piston compressor. It can provide stable and fast support for testing the dynamic balance performance of the compressor crankshaft assembly mechanism, while also improving testing efficiency and facilitating more effective targeted improvements to the compressor crankshaft assembly mechanism in the future.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a support fixture for testing the crankshaft assembly mechanism of a reciprocating piston compressor, comprising...

[0005] The support platform includes a support plate and multiple shock-absorbing support feet located at the lower end of the support plate; the support plate has a lower through hole; and

[0006] The clamping assembly includes two opposing clamping plates slidably mounted on a support plate; the lower part of each clamping plate extends to the lower side of the support plate through a lower through hole; a U-shaped groove is formed at the upper end of each clamping plate, and a limiting stop is provided within the U-shaped groove; a limiting member corresponding to the position of the U-shaped groove and movably mounted is also provided at the upper end of each clamping plate, the limiting member at least partially extending into the U-shaped groove; and

[0007] The drive assembly is located on the underside of the support plate and connected to both clamps, and is used to drive the two clamps to move closer or further apart.

[0008] Preferably, the upper end of the clamping plate is provided with a sliding groove communicating with the U-shaped groove; the limiting member includes a slider and a spring, the slider is slidably disposed in the sliding groove by the spring and the slider is at least partially located in the U-shaped groove.

[0009] Preferably, the outer end of the slider is provided with an anti-slip coating.

[0010] Preferably, the clamping assembly further includes a slide block; the slide block is fixedly mounted on the support plate; the slide block has an upper through hole that coincides with the position of the lower through hole, and the opening size of the lower through hole is not smaller than the opening size of the upper through hole; the clamping plate has a T-shaped structure, and the upper part of the clamping plate is slidably connected to the slide block; a rubber pad is provided between the slide block and the support plate.

[0011] Preferably, the drive assembly includes a screw and a pair of fixing blocks; the screw is rotatably mounted on the underside of the support plate via the fixing blocks; the screw is threadedly connected to both clamping plates.

[0012] Preferably, the anti-slip coating is made of rubber or polyurethane.

[0013] Preferably, the limiting member is made of rubber.

[0014] Preferably, the outer end face of the slider has an arc-shaped structure.

[0015] Preferably, the support foot includes a base, a rubber block, and bolts. The base has a cylindrical structure, and the rubber block is disposed inside the base. The rubber block has a cylindrical structure and is fixed to the support plate by bolts.

[0016] Preferably, the rubber pad has a square-shaped structure.

[0017] Compared with the prior art, the beneficial effects of this utility model are: by setting a clamping assembly and a driving assembly on a support platform with shock absorption function, the clamping assembly includes two slidably arranged clamping plates, and the driving assembly is located at the lower end of the support platform. The two clamping plates can achieve stable and rapid clamping of the crankshaft assembly mechanism through linkage of the driving assembly, thereby improving testing efficiency. In addition, this support fixture also has the advantages of simple structure, convenient operation and low testing cost. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of the testing fixture of this utility model;

[0019] Figure 2 This is a schematic diagram of the lower part of the testing fixture of this utility model;

[0020] Figure 3 This is a schematic diagram of the structure of the support plate of this utility model;

[0021] Figure 4 This is a schematic diagram of the lower structure of the clamping assembly of this utility model;

[0022] Figure 5 This is a schematic diagram of the upper structure of the testing fixture of this utility model;

[0023] Figure 6This is a schematic diagram of the clamping plate structure of this utility model.

[0024] In the diagram: 1. Support platform, 11. Support plate, 12. Base, 13. Rubber block, 14. Bolt, 111. Lower through hole;

[0025] 2 Clamping assembly, 21 slide block, 22 clamping plate, 23 rubber pad, 24 slider, 25 spring, 211 mounting groove, 212 upper through hole, 221 U-shaped groove, 222 stop bar, 223 sliding groove;

[0026] 3 Drive assembly, 31 Screw, 32 Fixing block, 33 Turntable; 4 Crankshaft assembly mechanism, 41 Bearing. Detailed Implementation

[0027] The specific embodiments of this utility model are described in detail below with reference to the accompanying drawings, so that those skilled in the art can more clearly understand how to practice this utility model. Although this utility model has been described in conjunction with its preferred embodiments, these embodiments are merely illustrative and not intended to limit the scope of this utility model.

[0028] See Figure 1-6 In one embodiment of this utility model, a support fixture for testing a crankshaft assembly mechanism of a reciprocating piston compressor includes: a support platform 1, a clamping assembly 2, and a drive assembly 3. The clamping assembly 2 includes two clamping plates 22 slidably disposed on the support platform 1. The drive assembly 3 is disposed at the lower end of the support platform 1. The two clamping plates 22 can be linked together through the drive assembly 3 to achieve stable clamping of crankshaft assembly mechanisms 4 with different sizes. After clamping, the crankshaft can rotate relative to the support fixture through the bearing 41 under the action of external force.

[0029] Specifically, the support platform 1 is a silent support platform, including a support plate 11 and three support legs. The support plate 11 has a circular plate structure, and a through hole 111 is opened in the middle of the support plate 11. The three support legs are distributed on the outer edge of the support plate 11. Each support leg includes a base 12, a rubber block 13, and a bolt 14. The base 12 has a cylindrical structure, and the rubber block 13 is disposed inside the base 12. The rubber block 13 has a cylindrical structure and is fixed to the support plate 11 by the bolt 14. During the test, the base 12 needs to be fixedly set. Under the action of the rubber block 13, the vibration generated on the support plate 11 during the test can be filtered out by the rubber block 13, which can greatly reduce the mechanical fatigue of the support fixture caused by vibration, keep the support plate 11 in a horizontal state, and thus ensure the stability of the entire support fixture. Furthermore, the rubber block 13 and the base 12 are tightly fitted to further reduce the collision frequency caused by vibration.

[0030] Combination Figure 4 and Figure 5The clamping assembly 2 also includes a slide 21 and a rubber pad 23. The slide 21 is generally plate-shaped, with a square mounting groove 211 in the middle. The bottom wall of the mounting groove 211 has an upper through hole 212 of the same length as the mounting groove 211, and the width of the upper through hole 212 is smaller than the width of the mounting groove 211.

[0031] The slide block 21 is fixedly mounted on the support plate 11, and the upper through hole 212 and the lower through hole 111 are positioned correspondingly. It should be noted that the opening size of the lower through hole 111 is not smaller than the opening size of the upper through hole 212. The rubber pad 23 has a U-shaped structure and is fixedly mounted between the slide block 21 and the support plate 11, so that the slide block 21 and the support plate 11 make soft contact, further reducing vibration.

[0032] The clamping plates 22 have a T-shaped structure. The two clamping plates 22 are slidably disposed in the mounting groove 211 on the slide block 21. The lower part of the clamping plate 22 is provided through the upper through hole 212 and the lower through hole 111. The clamping plate 22 is slidably connected to the bottom wall of the mounting groove 211. Under the action of external force, the two clamping plates 22 can move closer to each other or move away from each other in the mounting groove 211 to achieve clamping and releasing actions.

[0033] Furthermore, the upper end of the clamping plate 22 is provided with a U-shaped groove 221 for placing and positioning the bearing 41. The U-shaped groove 221 is provided with an arc-shaped baffle 222. The baffle 222 is located at the outer end of the clamping plate 22 body and is used to limit the bearing 41 axially.

[0034] The drive assembly 3 includes a screw 31, a turntable 33, and two fixing blocks 32. The screw 31 is rotatably mounted on the lower side of the support plate 11 via the two fixing blocks 32. The screw 31 is threadedly connected to the lower part of the two clamping plates 22. Since the two clamping plates 22 have the same structure and are arranged facing each other, when the screw 31 is rotated, the two clamping plates 22 can move closer or further apart. This arrangement gives the support fixture the advantage of strong versatility. In addition, compared with the cylinder drive of the prior art, the support fixture has the advantages of simple structure, convenient operation, and low testing cost. The turntable 33 is fixedly mounted on one end of the screw 31.

[0035] In one embodiment, to ensure the overall stability of the crankshaft assembly mechanism during testing, the upper end of the clamping plate 22 is provided with two symmetrically arranged sliding grooves 223 that communicate with the U-shaped groove 221. Each sliding groove 223 contains a limiting member. The limiting member includes a slider 24 and a spring 25. The slider 24 is slidably disposed in the sliding groove 223. One end of the spring 25 is fixedly connected to the clamping plate 22, and the other end is fixedly connected to the slider 24. When the bearing is placed in the U-shaped groove 221, the spring 25 is compressed, and the slider 24 abuts against the outer edge of the bearing to keep the bearing fixed. The outer end of the slider 24 has an arc-shaped structure so that the slider 24 can make surface contact with the bearing.

[0036] In one embodiment, the limiting element can also be a rubber component, which can achieve rapid fixation of the entire crankshaft assembly mechanism by pressing against the bearing.

[0037] In one embodiment, to further improve the stability of clamping, the end face of the slider 24 that contacts the outer edge of the bearing can be provided with a rubber layer or a polyurethane coating to increase the friction between the slider 24 and the outer edge of the bearing. It should be noted that the end face of the slider 24 that contacts the outer edge of the bearing cannot be provided with anti-slip grooves or roughened, as surface roughening can cause scratches to the outer edge of the bearing during clamping.

[0038] It should be noted that this support fixture requires a motor to drive the crankshaft and a dynamic balancing instrument to test the crankshaft's dynamic balance in order to complete the test. Since the motor and dynamic balancing instrument are existing technologies, this application will not elaborate on the settings between the motor and dynamic balancing instrument and this support fixture. During the test, after adjusting the two clamping plates 22 to a suitable distance using the drive assembly 3, the crankshaft assembly can be placed on the two clamping plates 22 for quick fixation. Then, the motor drives the crankshaft to rotate, and the dynamic balancing instrument tests the vibration of the rotating crankshaft to extract data.

[0039] This technical solution utilizes a support platform with shock absorption function. The clamping assembly and drive assembly are located on the support platform. The clamping assembly includes two sliding clamps, and the drive assembly is located at the lower end of the support platform. The two clamps can be linked by the drive assembly to achieve stable and rapid clamping of the crankshaft assembly, thereby improving testing efficiency. In addition, this support fixture also has the advantages of simple structure, convenient operation, and low testing cost.

[0040] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the spirit and scope of the technical solutions of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A support tooling for reciprocating piston compressor crankshaft assembly testing, characterized by: The utility model relates to a supporting table, which comprises a supporting plate (11) and a plurality of shock-absorbing supporting feet arranged at the lower end of the supporting plate (11), wherein a lower through hole is formed in the supporting plate (11); a clamping assembly (2) comprising two clamping plates (22) arranged on the supporting plate (11) in a facing and sliding manner; the lower part of the clamping plate (22) extends to the lower side of the supporting plate (11) through the lower through hole; a U-shaped groove is formed in the upper end of the clamping plate (22), and a limiting baffle is arranged in the U-shaped groove; a limiting piece corresponding to the position of the U-shaped groove is movably arranged on the upper end of the clamping plate (22), and the limiting piece extends at least partially into the U-shaped groove; and a driving assembly (3) is arranged on the lower side of the supporting plate (11) and connected with the two clamping plates (22) to drive the two clamping plates (22) to approach or move away from each other. The upper end of the clamping plate (22) is provided with a sliding groove in communication with the U-shaped groove; the limiting piece comprises a sliding block (24) and a spring (25), and the sliding block (24) is slidably arranged in the sliding groove through the spring (25), and the sliding block (24) is at least partially located in the U-shaped groove. An anti-skid coating is arranged on the outer end of the sliding block (24). The clamping assembly (2) further comprises a sliding seat (21); the sliding seat (21) is fixedly arranged on the supporting plate (11); an upper through hole is formed in the sliding seat (21) and coincides with the position of the lower through hole, and the opening size of the lower through hole is not less than that of the upper through hole; the clamping plate (22) has a T-shaped structure, and the upper part of the clamping plate (22) is slidably connected with the sliding seat (21); a rubber pad is arranged between the sliding seat (21) and the supporting plate (11).

2. A support tool for testing a crankshaft assembly of a reciprocating piston compressor according to claim 1, characterized in that: The driving assembly (3) comprises a screw rod (31) and a pair of fixing blocks (32); the screw rod (31) is rotatably arranged on the lower side of the supporting plate (11) through the fixing blocks (32); and the screw rod (31) is threadedly connected with the two clamping plates (22).

3. A support tool for testing a reciprocating piston compressor crankshaft assembly according to claim 2, characterized in that: The anti-skid coating is made of rubber or polyurethane.

4. A support tool for testing a crankshaft assembly of a reciprocating piston compressor according to claim 1, characterized in that: The limiting piece is made of rubber.

5. A support tool for testing a crankshaft assembly of a reciprocating piston compressor according to claim 1, characterized in that: The outer end surface of the sliding block (24) has an arc-shaped structure.

6. A support tool for testing a crankshaft assembly of a reciprocating piston compressor according to claim 3, characterized in that: The supporting foot comprises a base (12), a rubber block (13) and a bolt (14), the base (12) has a cylindrical structure, and the rubber block (13) is arranged in the base (12); the rubber block (13) has a cylindrical structure, and the rubber block (13) is fixedly connected with the supporting plate (11) through the bolt (14).

7. A support tool for testing a crankshaft assembly of a reciprocating piston compressor according to claim 1, characterized in that: The rubber pad has a mouth-shaped structure.

8. A support tool for testing a reciprocating piston compressor crankshaft assembly according to claim 2, characterized in that: ​ 9. A support tool for testing a reciprocating piston compressor crankshaft assembly according to claim 1, characterized in that: ​ 10. A support tool for testing a crankshaft assembly of a reciprocating piston compressor according to claim 4, characterized in that: ​

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