High-pressure axial plunger pump sliding shoe pair friction performance testing device

Abstract

The utility model belongs to the technical field of plunger pumps, and particularly relates to a high-pressure axial plunger pump sliding shoe pair friction performance testing device which comprises a power mechanism, a swash plate mechanism and a testing mechanism, the power mechanism comprises a support, a driving motor, a rotating disc and a supporting column, and the driving motor is arranged on the right side wall of the support. The output end of the driving motor penetrates into the inner side of the support to be connected with a rotating disc. A supporting column is arranged on the left side in the support. The swash plate mechanism is connected to the supporting column, the swash plate mechanism comprises a supporting sleeve and a swash plate, the left end of the supporting sleeve is connected to the supporting column, and the right end of the supporting sleeve is connected with the swash plate; the testing mechanism is connected between the swash plate and the rotary plate and comprises a sliding shoe, a connecting rod and a sliding sleeve, the sliding shoe is connected with the connecting rod, the sliding sleeve is arranged at the right end of the connecting rod, the real moving state of the sliding shoe is simulated, the sliding shoe makes friction movement on the swash plate, the friction performance of the sliding shoe is tested, an exposed structure is adopted, and the state of the sliding shoe is convenient to observe.

Description

Technical Field

[0001] The utility model relates to the technical field of plunger pumps, in particular to a friction performance testing device for a sliding shoe pair of a high-pressure axial plunger pump. Background Art

[0002] Commonly used axial piston pumps are generally equipped with 7, 9 or 11 sliding shoe pairs, each of which is composed of a sliding shoe and a swash plate. In the actual working process, the sliding shoe slides at high speed along the surface of the swash plate. The bottom of the sliding shoe is designed with an inner oil chamber and an auxiliary support oil groove. When the axial piston pump is working, high-pressure oil in the pump enters the inner oil chamber and the auxiliary support oil groove on the bottom of the sliding shoe through the oil holes set on the sliding shoe, thereby forming a layer of oil film static pressure support between the sliding shoe and the swash plate; that is, in the actual working process of the pump, there is a layer of lubricating oil film between the bottom of the sliding shoe and the surface of the swash plate. The performance of the entire pump is closely related to the performance of this layer of oil film. If the performance of the oil film is good, the life of the pump will be long; if the performance of the oil film is not good, the bottom of the sliding shoe and the surface of the swash plate will have metal-to-metal dry friction. If the dry friction lasts for a long time, the sliding shoe will be burned, causing the entire pump to break down.

[0003] In order to implement the friction performance test of the slipper on the swash plate, the present application proposes a friction performance test device for a slipper pair of a high-pressure axial piston pump. Utility Model Content

[0004] The purpose of this section is to summarize some aspects of the embodiments of the utility model and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and the abstract of the specification and the name of the utility model of this application to avoid blurring the purpose of this section, the abstract of the specification and the name of the utility model, and such simplifications or omissions cannot be used to limit the scope of the utility model.

[0005] In view of the above problems and / or the problems existing in the existing high-pressure axial piston pump sliding shoe pair, the utility model is proposed.

[0006] Therefore, the purpose of the utility model is to provide a high-pressure axial piston pump slipper pair friction performance testing device, which simulates the actual activity state of the slipper, makes the slipper move frictionally on the inclined plate, tests the friction performance of the slipper, and adopts an exposed structure to facilitate observation of the state of the slipper.

[0007] In order to solve the above technical problems, according to one aspect of the present invention, the present invention provides the following technical solutions:

[0008] A friction performance testing device for a high-pressure axial piston pump sliding shoe pair, comprising:

[0009] The power mechanism includes a bracket, a driving motor, a turntable and a support column, wherein the driving motor is arranged on the right side wall of the bracket, the output end of the driving motor penetrates into the inner side of the bracket to connect the turntable, and the support column is arranged on the left side inside the bracket;

[0010] A swash plate mechanism connected to the support column, the swash plate mechanism comprising a support sleeve and a swash plate, the left end of the support sleeve being connected to the support column, and the right end of the support sleeve being connected to the swash plate;

[0011] The testing mechanism is connected between the inclined plate and the rotating plate. The testing mechanism comprises a sliding shoe, a connecting rod and a sliding sleeve. The sliding shoe is connected to the connecting rod. The sliding sleeve is arranged at the right end of the connecting rod.

[0012] As a preferred solution of the friction performance testing device for the high-pressure axial piston pump slipper pair described in the utility model, the turntable is provided with evenly distributed fixing bolts, and the right end of the sliding sleeve is provided with a fixing screw hole connected with the fixing bolts.

[0013] As a preferred solution of the friction performance testing device for the slipper pair of a high-pressure axial piston pump described in the utility model, a limiting hole is provided on the support column, and a limiting bolt connected to the limiting hole is provided on the support sleeve.

[0014] As a preferred solution of a high-pressure axial piston pump slipper pair friction performance testing device described in the utility model, wherein: a connecting bolt is arranged on the inclined plate, and an anti-slip mechanism is connected to the connecting bolt, and the anti-slip mechanism includes an end cover, a clamping hole and a connecting screw hole, the end cover is covered on the inclined plate, and a clamping hole connected to the slipper is provided on the end cover, and a connecting screw hole connected to the connecting bolt is provided in the center of the end cover.

[0015] As a preferred solution of the friction performance testing device for the sliding shoe pair of a high-pressure axial piston pump described in the utility model, the end cover is a transparent cover.

[0016] As a preferred solution of the friction performance testing device for the sliding shoe pair of a high-pressure axial piston pump described in the utility model, a ball head is provided at the connection position between the left end of the connecting rod and the sliding shoe.

[0017] As a preferred solution of the friction performance testing device for the slipper pair of a high-pressure axial piston pump described in the utility model, the bottom of the bracket is provided with evenly distributed anti-skid rubber pads.

[0018] As a preferred solution of the friction performance testing device for the sliding shoe pair of a high-pressure axial piston pump described in the utility model, a spring is arranged in the inner cavity of the sliding sleeve.

[0019] Compared with the prior art: the utility model connects the test mechanism to the turntable of the power mechanism, so that the sliding shoe contacts the swash plate, drives the turntable to rotate by the driving motor, thereby driving the sliding shoe to move on the swash plate, simulating the real activity state of the sliding shoe, making the sliding shoe move frictionally on the swash plate, and testing the friction performance of the sliding shoe. The exposed structure is adopted, which is convenient for observing the state of the sliding shoe. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solution of the implementation of the utility model, the utility model will be described in detail below in combination with the drawings and detailed implementation. Obviously, the drawings described below are only some implementations of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative labor. Among them:

[0021] Figure 1 This is a schematic diagram of the shaft side structure of the utility model;

[0022] Figure 2 This is a schematic diagram of the power mechanism structure of the utility model;

[0023] Figure 3 This is a schematic diagram of the structure of the swash plate mechanism of the utility model;

[0024] Figure 4 This is a schematic diagram of the structure of the test mechanism of the utility model;

[0025] Figure 5 It is a schematic diagram of the structure of the anti-slip mechanism of the utility model.

[0026] In the figure: 100 power mechanism, 110 bracket, 120 drive motor, 130 turntable, 131 fixing bolts, 140 support column, 141 limiting holes, 200 swash plate mechanism, 210 support sleeve, 211 limiting bolts, 220 swash plate, 221 connecting bolts, 300 testing mechanism, 310 sliding shoe, 320 connecting rod, 330 sliding sleeve, 331 fixing screw hole, 400 anti-slip mechanism, 410 end cover, 420 clamping hole, 430 connecting screw hole. DETAILED DESCRIPTION

[0027] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and understandable, the specific implementation methods of the present invention are described in detail below with reference to the accompanying drawings.

[0028] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific implementation methods disclosed below.

[0029] Secondly, the present invention is described in detail with reference to the schematic diagram. When describing the implementation of the present invention, for the sake of convenience, the cross-sectional diagram showing the device structure will not be partially enlarged according to the general proportion, and the schematic diagram is only an example, which should not limit the scope of protection of the present invention. In addition, in actual production, the three-dimensional dimensions of length, width and depth should be included.

[0030] In order to make the purpose, technical solution and advantages of the present invention more clear, the implementation mode of the present invention will be further described in detail below with reference to the accompanying drawings.

[0031] The utility model provides a high-pressure axial piston pump slipper pair friction performance test device, which simulates the real activity state of the slipper, makes the slipper move on the swash plate, and tests the friction performance of the slipper. The exposed structure is adopted, which is convenient for observing the state of the slipper. Figure 1-Figure 5 , including: a power mechanism 100, a swash plate mechanism 200 and a testing mechanism 300.

[0032] The power mechanism 100 includes a bracket 110, a driving motor 120, a turntable 130 and a support column 140. The driving motor 120 is arranged on the right side wall of the bracket 110. The output end of the driving motor 120 penetrates into the inner side of the bracket 110 to connect the turntable 130. The support column 140 is arranged on the left side of the bracket 110.

[0033] The bracket 110 is a concave bracket, and the driving motor 120 drives the turntable 130 to rotate, thereby providing the moving power.

[0034] The swash plate mechanism 200 is connected to the support column 140. The swash plate mechanism 200 includes a support sleeve 210 and a swash plate 220. The left end of the support sleeve 210 is connected to the support column 140, and the right end of the support sleeve 210 is connected to the swash plate 220.

[0035] The swash plate 220 adopts the swash plate structure of a plunger pump and is connected to the support column 140 via a support sleeve 210 .

[0036] The testing mechanism 300 is connected between the swash plate 220 and the rotating plate 130. The testing mechanism 300 includes a sliding shoe 310, a connecting rod 320 and a sliding sleeve 330. The sliding shoe 310 is connected to the connecting rod 320. The sliding sleeve 330 is arranged at the right end of the connecting rod 320.

[0037] The end face of the slipper 310 contacts the swash plate 220, and the right end of the sleeve 330 is connected to the turntable 130. The turntable 130 drives the test mechanism 300 to rotate, so that the slipper 310 moves on the swash plate 220, simulating the working state of the slipper in the plunger pump and testing the friction performance of the slipper 310.

[0038] During the test, the right end of the sliding sleeve 330 of the test mechanism 300 needs to be fixedly connected to the turntable 130 so that the test mechanism 300 rotates with the turntable 130. Therefore, the turntable 130 is provided with evenly distributed fixing bolts 131, and the right end of the sliding sleeve 330 is provided with a fixing screw hole 331 connected with the fixing bolt 131.

[0039] The right end of the sliding sleeve 330 of the test mechanism 300 is fixed on the turntable 130 through the fixing screw hole 331 , so that the test mechanism 300 rotates along with the turntable 130 , thereby achieving the driving effect of the test mechanism 300 .

[0040] During the test, the swash plate 220 itself needs to be fixed and cannot rotate. Therefore, a limiting hole 141 is provided on the support column 140, and a limiting bolt 211 connected to the limiting hole 141 is provided on the support sleeve 210;

[0041] The support sleeve 210 is fixed to the limiting hole 141 by the limiting bolt 211 , thereby fixing the swash plate 220 .

[0042] Since the sliding shoe 310 is in direct contact with the swash plate 220, it is easy to fall off. Therefore, a connecting bolt 221 is provided on the swash plate 220, and an anti-slip mechanism 400 is connected to the connecting bolt 221. The anti-slip mechanism 400 includes an end cover 410, a clamping hole 420 and a connecting screw hole 430. The end cover 410 is covered on the swash plate 220, and a clamping hole 420 connected to the sliding shoe 310 is provided on the end cover 410. A connecting screw hole 430 connected to the connecting bolt 221 is provided at the center of the end cover 410.

[0043] Among them, since the sliding shoe 310 is a graphic cylindrical structure, the contact position between the sliding shoe 310 and the swash plate 220 is a large disc, and the connection position between the sliding shoe 310 and the connecting rod 320 is a small cylinder. Therefore, the diameter of the clamping hole 420 is larger than the small cylinder at the upper end of the sliding shoe 310, and the diameter of the clamping hole 420 is smaller than the large disc. The clamping hole 420 is clamped on the outside of the small cylinder at the upper end of the sliding shoe 310 to prevent the sliding shoe 310 from falling off the swash plate 220.

[0044] Since the wear state of the sliding shoe 310 needs to be observed, the end cover 410 is a transparent cover body, and the wear state of the sliding shoe 310 can be observed through the end cover 410 .

[0045] Since the slipper 310 is connected to the plunger through a ball head in the plunger pump, in order to improve the simulation effect, a ball head is provided at the connection position between the left end of the connecting rod 320 and the slipper 310 to simulate the connection structure of the slipper 310 in the plunger pump.

[0046] Since the driving motor 120 may shake when working, an evenly distributed anti-skid rubber pad is provided at the bottom of the bracket 110 to improve the stability of the bracket 110 when it is placed and prevent the bracket 110 from slipping due to the shaking of the driving motor 120.

[0047] Since the sliding shoe 310 needs to be kept in contact with the swash plate 220, a spring is provided in the inner cavity of the sliding sleeve 330. The spring provides elastic force to keep the connecting rod 320 extending from the sliding sleeve 330, thereby causing the sliding shoe 310 at the left end of the connecting rod 320 to contact the swash plate 220.

[0048] During specific use, the right end of the sliding sleeve 330 of the testing mechanism 300 is connected to the turntable 130, and the sliding shoe 310 of the testing mechanism 300 is in contact with the swash plate 220. The turntable 130 is driven to rotate by the driving motor 120, thereby driving the testing mechanism 300 to rotate, so that the sliding shoe 310 rotates on the swash plate 220, and the friction performance of the sliding shoe 310 is tested. During the test, the end cover 410 prevents the sliding shoe 310 from falling off the swash plate 220, and the wear state of the sliding shoe 310 is observed through the end cover 410. After the test is completed, the swash plate mechanism 200 and the testing mechanism 300 can be separately replaced, and a new sliding shoe 310 can be replaced for testing.

[0049] Although the present invention has been described above with reference to the embodiments, various modifications may be made thereto and parts thereof may be replaced with equivalents without departing from the scope of the present invention. In particular, as long as there is no structural conflict, the various features in the embodiments disclosed in the present invention may be used in combination with each other in any manner, and the fact that these combinations are not exhaustively described in this specification is only for the sake of omitting space and saving resources. Therefore, the present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A friction performance testing device for a high-pressure axial piston pump sliding shoe pair, characterized in that: include: A power mechanism (100) comprises a bracket (110), a drive motor (120), a turntable (130) and a support column (140), wherein the drive motor (120) is arranged on the right side wall of the bracket (110), an output end of the drive motor (120) penetrates into the inner side of the bracket (110) and connects to the turntable (130), and the support column (140) is arranged on the left side inside the bracket (110); A swash plate mechanism (200) is connected to the support column (140), the swash plate mechanism (200) comprising a support sleeve (210) and a swash plate (220), the left end of the support sleeve (210) being connected to the support column (140), and the right end of the support sleeve (210) being connected to the swash plate (220); A testing mechanism (300) is connected between the swash plate (220) and the rotating plate (130). The testing mechanism (300) comprises a sliding shoe (310), a connecting rod (320) and a sliding sleeve (330). The sliding shoe (310) is connected to the connecting rod (320), and the sliding sleeve (330) is arranged at the right end of the connecting rod (320).

2. A high-pressure axial piston pump slipper pair friction performance testing device according to claim 1, characterized in that: The rotating disk (130) is provided with evenly distributed fixing bolts (131), and the right end of the sliding sleeve (330) is provided with a fixing screw hole (331) connected with the fixing bolt (131).

3. A high-pressure axial piston pump slipper pair friction performance testing device according to claim 1, characterized in that: The support column (140) is provided with a limiting hole (141), and the support sleeve (210) is provided with a limiting bolt (211) connected to the limiting hole (141).

4. A high-pressure axial piston pump slipper pair friction performance testing device according to claim 1, characterized in that: The swash plate (220) is provided with a connecting bolt (221), and the connecting bolt (221) is connected with an anti-slip mechanism (400), and the anti-slip mechanism (400) comprises an end cover (410), a clamping hole (420) and a connecting screw hole (430), the end cover (410) is covered on the swash plate (220), the end cover (410) is provided with a clamping hole (420) connected to the sliding shoe (310), and the center of the end cover (410) is provided with a connecting screw hole (430) connected to the connecting bolt (221).

5. A high-pressure axial piston pump shoe pair friction performance testing device according to claim 4, characterized in that: The end cover (410) is a transparent cover.

6. A high-pressure axial piston pump shoe pair friction performance testing device according to claim 1, characterized in that: A ball head is provided at the connection position between the left end of the connecting rod (320) and the sliding shoe (310).

7. A high-pressure axial piston pump slipper pair friction performance testing device according to claim 1, characterized in that: The bottom of the bracket (110) is provided with evenly distributed anti-slip rubber pads.

8. The friction performance testing device for a high-pressure axial piston pump sliding shoe pair according to claim 1, characterized in that: The inner cavity of the sliding sleeve (330) is provided with a spring.

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