Inclined disc type axial plunger pump plunger assembly axial clearance testing fixture

Abstract

The utility model discloses an axial clearance testing fixture for a plunger assembly of a swash plate type axial plunger pump, which relates to the technical field of hydraulic pump part detection and comprises a placing component and a measuring component. The placing assembly comprises a plunger placing block and two product check blocks which are arranged on the side faces of the plunger placing block at intervals in the X direction, and the two product check blocks can get close to or get away from each other in the X direction. The measuring assembly comprises two adjusting seats which are arranged at intervals in the Y direction and can be close to or far away from each other in the Y direction, one adjusting seat is provided with a sliding shoe abutting piece which extends to one Y-direction end face of the plunger placing block and can longitudinally slide along the current adjusting seat, and the other adjusting seat is provided with a sliding shoe abutting piece which extends to the other Y-direction end face of the plunger placing block and can longitudinally slide along the current adjusting seat. According to the axial clearance detection device, the axial clearance can be rapidly and accurately detected, the manufacturing cost is low, and the capital pressure of small enterprises is effectively reduced.

Description

Technical Field

[0001] This utility model relates to the field of hydraulic pump component testing technology, specifically to an axial clearance gauge for a swashplate axial piston pump plunger assembly. Background Technology

[0002] Axial piston pumps have axially mounted pistons and are widely used in high-pressure systems. They can be categorized into swashplate axial piston pumps, swashplate-shaft axial piston pumps, and other types. This piston assembly is a key component of the swashplate-shaft axial piston pump. The diagram shows the structure of a swashplate axial piston pump. The pump's input shaft is connected to the rotating cylinder block. Liquid suction and discharge channels are located on either side of the input shaft. One of these channels is shown in the diagram. The manual variable displacement mechanism is connected to the swashplate. The angle between the swashplate's central axis and the input shaft axis (swashplate tilt angle) can be changed using the black knob in the manual variable displacement mechanism, thereby altering the effective change in the sealed working volume and achieving pump variable displacement.

[0003] In the existing technology, piston pump manufacturers mostly use the following two detection methods to measure the axial clearance of the piston assembly in a disc axial piston pump:

[0004] 1. Split-type inspection: Using a plug gauge to measure radial clearance and a dial indicator to detect runout results in inconsistent reference standards (cumulative error ≥ 0.02mm).

[0005] 2. Optical imaging equipment: The equipment cost is high (more than 500,000 yuan per unit), which is difficult for small and medium-sized enterprises to configure; the detection cycle is long (≥5 minutes per piece), which is not suitable for the rapid detection needs of production lines. Utility Model Content

[0006] This application provides an axial clearance gauge for a swashplate-type axial piston pump plunger assembly, which can solve the technical problems in the existing technology where common methods for measuring the axial clearance of swashplate-type axial piston pump plunger assemblies by piston pump manufacturers involve using a plug gauge to measure the radial clearance and a dial indicator to detect runout, resulting in inconsistent reference standards. Furthermore, optical imaging instruments lead to high equipment costs and long testing cycles.

[0007] This application provides an axial clearance gauge for a swashplate-type axial piston pump plunger assembly, comprising:

[0008] The placement assembly includes a plunger placement block and two product stops spaced apart along the X direction on one side of the plunger placement block for clamping the stepped surface of the plunger slipper to be tested, and the two product stops can move closer or further apart from each other along the X direction.

[0009] A measuring component located on one side of the placement component in the X direction, the measuring component including two adjusting seats spaced apart along the Y direction and capable of moving closer or further apart along the Y direction, wherein one of the adjusting seats is provided with a slipper abutment extending to one of the Y-direction end faces of the plunger placement block and capable of sliding longitudinally along the current adjusting seat, and the other adjusting seat is provided with a dial indicator fixing block extending to the other Y-direction end face of the plunger placement block and capable of sliding longitudinally along the current adjusting seat;

[0010] Wherein, the Y direction is the axial direction of the plunger to be tested in the detection state, and the X direction is the direction orthogonal to the Y direction in the horizontal plane.

[0011] In one embodiment, a support base plate is also included, on which both the placement component and the measuring component are disposed.

[0012] In one embodiment, the bottom of the plunger placement block is fixedly connected to the support base plate, and the top of the plunger placement block is provided with a lower groove for matching the shape of the plunger to be tested.

[0013] In one embodiment, the product stop has an oblong hole and a fixing bolt for threaded connection with the side of the plunger placement block through the oblong hole.

[0014] In one embodiment, the support base plate is provided with a Y-axis slide rail protruding from the upper surface of the support base plate, and the two adjustment seats are disposed on the Y-axis slide rail and can slide along the Y-axis slide rail.

[0015] In one embodiment, the bottom of one side of the adjusting seat facing the plunger placement block is provided with a first threaded limiting rod. One end of the first threaded limiting rod extends into the current adjusting seat to abut against the side of the Y-axis slide rail, and the first threaded limiting rod can be displaced in the X-axis within the current adjusting seat.

[0016] In one embodiment, the adjusting seat has a Z-axis slide rail arranged along the current height direction of the adjusting seat and a Z-axis slider that can slide along the Z-axis slide rail on the side facing the plunger placement block. The Z-axis slide rail protrudes from the side of the adjusting seat. A second threaded limiting rod is provided on the Y-axis side of the Z-axis slider. One end of the second threaded limiting rod extends into the current Z-axis slider to abut against the side of the Z-axis slide rail, and the second threaded limiting rod can be displaced in the Y-axis direction within the current Z-axis slider.

[0017] In one embodiment, the slipper abutment includes a connecting plate disposed on one of the Z-axis sliders, the connecting plate extending to one of the Y-axis end faces of the plunger placement block, and a holding threaded rod extending through the connecting plate in the Y-axis direction, the holding threaded rod being capable of Y-axis displacement within the connecting plate.

[0018] In one embodiment, the end of the threaded rod away from the plunger placement block is provided with a rotating handle, and the end of the threaded rod near the plunger placement block is provided with a plastic pressure block for abutting the end face of the plunger slipper to be tested.

[0019] In one embodiment, the dial indicator fixing block is disposed on another Z-axis slider and extends to the other Y-axis end face of the plunger placement block, and the dial indicator fixing block is provided with a through hole for the dial indicator probe to pass through.

[0020] The beneficial effects of the technical solutions provided in this application include:

[0021] 1. Through the integrated design of placement and measurement components, the axial clearance measurement of the plunger assembly is ensured to be completed under the same reference, eliminating the measurement error caused by the inconsistency between the reference of the plug gauge and the dial indicator in the traditional method;

[0022] 2. Compared with high-cost equipment such as optical imaging instruments, this gauge adopts a mechanical measurement structure, which significantly reduces manufacturing costs and simplifies maintenance. Through the adjustable design of the adjustment seat, product stop, and slipper support, it can be adapted to various types of plunger assemblies, reducing the need for purchasing special gauges. Moreover, the clamping is simple, which can save a lot of operation time and improve testing efficiency. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0024] Figure 1 A schematic diagram of an axial clearance gauge structure for a swashplate-type axial piston pump plunger assembly is provided in this application embodiment;

[0025] Figure 2 A top view of an axial clearance gauge for a swashplate-type axial piston pump plunger assembly provided in this application embodiment;

[0026] Figure 3 A front view of an axial clearance gauge for a swashplate-type axial piston pump plunger assembly provided in an embodiment of this application.

[0027] In the diagram: 1. Plunger placement block; 2. Product stop block; 3. Adjustment seat; 301. Z-axis slide rail; 302. Z-axis slider; 4. Slipper support; 401. Connecting plate; 402. Support threaded rod; 403. Rotating handle; 404. Plastic pressure block; 5. Dial indicator fixing block; 501. Through hole; 6. Support base plate; 7. Y-axis slide rail; 8. First threaded limit rod; 9. Second threaded limit rod. Detailed Implementation

[0028] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present application.

[0029] This application provides an axial clearance gauge for a swashplate-type axial piston pump plunger assembly. It solves the technical problems in the existing technology where common methods used by piston pump manufacturers to measure the axial clearance of swashplate-type axial piston pump plunger assemblies involve using a plug gauge to measure radial clearance and a dial indicator to detect runout, resulting in inconsistent reference standards. Furthermore, optical imaging instruments lead to high equipment costs and long testing cycles.

[0030] The axial clearance gauge for the swashplate-type axial piston pump plunger assembly in this application includes a placement component and a measuring component. The placement component is mainly used to stably place the plunger to be tested and fix the slipper portion of the plunger to be tested to ensure the correct axial positioning of the plunger to be tested during the testing process. The measuring component is divided into two parts. One part is used to be set at the front end of the plunger to be tested, which is used to cooperate with the placement component to lock the slipper end face of the plunger to be tested and prevent it from rotating. The other part is used to be set at the rear end of the plunger to be tested for placing the measuring tool.

[0031] First, it should be noted that the Y direction mentioned in this application refers to the axial direction of the plunger under test in the detection state, and the X direction is the direction orthogonal to the Y direction in the horizontal plane.

[0032] Specifically, Figure 1 This is a schematic diagram of an axial clearance gauge structure for a swashplate-type axial piston pump plunger assembly, provided in an embodiment of this application. Figure 2 A top view of an axial clearance gauge for a swashplate-type axial piston pump plunger assembly provided in this application embodiment, as shown below. Figure 1 , Figure 2As shown, the placement assembly includes a plunger placement block 1 and two product blocks 2 spaced apart along the X-direction on one side of the plunger placement block 1 for clamping the stepped surface of the plunger's slide shoe to be tested. The plunger placement block 1 is a fixed block structure on which the plunger portion of the plunger to be tested is placed. The slide shoe portion of the plunger to be tested extends out of the plunger placement block 1 and is located on one side of the product block 2. The product block 2 is a plate structure that is movably connected to the side of the plunger placement block 1 by a fastener. The two product blocks 2 are located on the same horizontal plane in the X-direction. When the plunger to be tested is placed, the two product blocks 2 clamp the stepped surface of the slide shoe of the plunger to be tested to fix the current vertical posture of the slide shoe of the plunger to be tested. The two product blocks 2 can move closer or further apart to accommodate plungers of different specifications.

[0033] Further details can be found here. Figure 1 The measuring component is located on one side of the placement component in the X direction. The measuring component includes two adjusting seats 3 that are spaced apart along the Y direction and can move closer or further apart from each other along the Y direction. One adjusting seat 3 is provided with a slipper abutment 4 that extends to one Y-direction end face of the plunger placement block 1 and can slide longitudinally along the current adjusting seat 3. The other adjusting seat 3 is provided with a dial indicator fixing block 5 that extends to the other Y-direction end face of the plunger placement block 1 and can slide longitudinally along the current adjusting seat 3.

[0034] The two adjusting seats 3 are located on one side of the placement assembly in the X direction. However, the sliding shoe support 4 and the dial indicator fixing block 5 provided on the adjusting seat 3 extend towards the plunger placement block 1 to align with the side of the plunger placement block 1 in the Y direction. In the actual measurement process, the sliding shoe support 4 is located at the front end of the plunger to be tested to support the end face of the sliding shoe of the plunger to be tested. It cooperates with the product stop block 2 to clamp the inner and outer end faces of the sliding shoe of the plunger to be tested to fix the current vertical posture of the sliding shoe of the plunger to be tested. The dial indicator fixing block 5 is located at the rear end of the plunger to be tested and is used to set a dial indicator. That is to say, no matter how the distance between the two adjusting seats 3 is adjusted, the plunger placement block 1 is always located between the two adjusting seats 3.

[0035] Further details can be found here. Figure 1 The axial clearance gauge for the swashplate axial piston pump plunger assembly in this application also includes a support base plate 6. The placement component and the measuring component are both disposed on the support base plate 6. In one possible embodiment of this application, the support base plate 6 is a rectangular plate made of metal, with its length direction being the Y direction and its width direction being the X direction. The plunger placement block 1 is fixedly disposed on the support base plate 6, and the adjusting seat 3 is slidably disposed on the support base plate 6, with the two adjusting seats 3 disposed along the length direction of the support base plate 6.

[0036] In one possible implementation, a rubber pad is provided at each of the four corners of the bottom of the support base plate 6 to effectively isolate the mechanical vibration generated during the testing process, reduce the impact of external vibration on the measurement accuracy, and maintain the stability of the testing environment.

[0037] Furthermore, the bottom of the plunger placement block 1 is fixedly connected to the support base plate 6, and the top of the plunger placement block 1 is provided with a lower groove for matching the shape of the plunger to be tested. In one possible embodiment, the plunger placement block 1 includes two parts: a connecting part fixedly connected to the support base plate 6, which has a square structure and a horizontally extending connecting ear on its bottom side, through which a stable connection with the support base plate 6 is achieved; and a placement part is provided on the top of the connecting part, which is integrally formed with the connecting part, and a lower groove is formed on the top surface of the placement part. In one possible embodiment, the lower groove has a V-shaped cross-section. The inclined structure of the V-shaped lower groove can achieve automatic centering and positioning of the plunger to be tested, ensuring the accuracy of the alignment between the axis of the plunger to be tested and the measurement reference axis. Moreover, the plunger to be tested and the V-shaped lower groove are in line contact, which reduces friction loss by more than 60% compared to surface contact.

[0038] Furthermore, the product stop 2 has an oblong hole and a fixing bolt for threaded connection with the side of the plunger placement block 1 through the oblong hole. The oblong hole is an elliptical hole whose length direction coincides with the X direction. The plunger placement block 1 has a threaded adjustment hole at the opposite position. The shank of the fixing bolt passes through the oblong hole to enter the threaded adjustment hole. The diameter of the nut of the fixing bolt is larger than the width of the oblong hole, so that when the fixing is completed, the nut of the fixing bolt presses on the side of the product stop 2 away from the plunger placement block 1 to ensure the current posture of the product stop 2. When it is necessary to adjust the X-direction position of the product stop 2, the fixing bolt is rotated counterclockwise so that the nut of the fixing bolt moves away from the product stop 2, and the product stop 2 can slide along the X direction.

[0039] Further details can be found here. Figure 2 The support base plate 6 is provided with a Y-axis slide rail 7, and two adjustment seats 3 are provided on the Y-axis slide rail 7 and can slide along the Y-axis slide rail 7. The Y-axis slide rail 7 is provided along the length direction of the support base plate 6, and the bottom of the adjustment seat 3 is provided with a corresponding matching shape to realize the relative linear movement between the two. In one possible embodiment, the Y-axis slide rail 7 in this application protrudes from the upper surface of the support base plate 6.

[0040] Furthermore, Figure 3 A front view of an axial clearance gauge for a swashplate-type axial piston pump plunger assembly provided in this application embodiment is shown below. Figure 3The bottom of the side of the adjusting seat 3 facing the plunger placement block 1 is provided with a first threaded limiting rod 8. One end of the first threaded limiting rod 8 extends into the current adjusting seat 3 to abut against the side of the Y-axis slide rail 7, and the first threaded limiting rod 8 can move in the X-axis within the current adjusting seat 3. The side of the adjusting seat 3 facing the plunger placement block 1 is also provided with a threaded hole. The inner circumferential wall of the threaded hole is provided with an internal thread and is directly connected to the Y-axis slide rail 7. The outer circumference of the first threaded limiting rod 8 is provided with a matching external thread. By rotating the first threaded limiting rod 8 in different directions, the first threaded limiting rod 8 can be moved in the X-axis within the current adjusting seat 3. When it is necessary to fix the current Y-axis position of the adjusting seat 3, the first threaded limiting rod 8 is rotated clockwise so that the first threaded limiting rod 8 continuously extends into the adjusting seat 3 and abuts against the side of the Y-axis slide rail 7 to prevent the adjusting seat 3 from continuing to slide.

[0041] Further details can be found here. Figure 3 The adjusting seat 3 has a Z-axis slide rail 301 along the height direction of the current adjusting seat 3 and a Z-axis slider 302 that can slide along the Z-axis slide rail 301 on the side facing the plunger placement block 1. The Z-axis slide rail 301 protrudes from the side of the adjusting seat 3. The Z-axis slider 302 has a second threaded limiting rod 9 on the Y-axis side. One end of the second threaded limiting rod 9 extends into the current Z-axis slider 302 to abut against the side of the Z-axis slide rail 301. The second threaded limiting rod 9 can move in the Y-axis within the current Z-axis slider 302. The setting of the Z-axis slide rail 301 can quickly adjust the height of the plastic pressure block 404 and the dial indicator to coincide with the Z-axis center of the plunger to be tested, which is convenient for the testing needs of products with different diameters. The connection method between the Z-axis slide rail 301 and the Z-axis slider 302 is the same as the connection method between the Y-axis slide rail 7 and the adjusting seat 3. The limiting mechanism of the second threaded limiting rod 9 on the Z-axis slider 302 is the same as the limiting mechanism of the first threaded limiting rod 8 on the adjusting seat 3, and will not be repeated here.

[0042] Further details can be found here. Figure 2 The slipper support 4 includes a connecting plate 401 disposed on one of the Z-axis sliders 302. The connecting plate 401 extends to one of the Y-axis end faces of the plunger placement block 1. A threaded rod 402 is provided through the first connecting plate 401 in the Y-axis direction, and the threaded rod 402 can be displaced in the Y-axis direction within the connecting plate 401. A through hole 501 is provided through the first connecting plate 401. The inner wall of the through hole 501 is provided with an internal thread, and the threaded rod 402 is provided with a matching external thread. By rotating the rotating handle 403, the threaded rod 402 is moved closer to and away from the plunger placement block 1. The plastic pressure block 404 is used to directly abut against the end face of the plunger slipper to be tested, and it, together with the product stop block 2, fixes the plunger slipper to be tested.

[0043] Further details can be found here. Figure 1The dial indicator fixing block 5 is set on another Z-axis slider 302 and extends to the other Y-axis end face of the plunger placement block 1. The dial indicator fixing block 5 is provided with a through hole 501 for the dial indicator probe to pass through. The dial indicator probe has a certain length and directly contacts the tail end of the plunger part of the plunger to be tested through the through hole 501.

[0044] The axial clearance gauge for the swashplate-type axial piston pump plunger assembly in this application is used as follows: Based on the shaft length and diameter of the plunger to be tested, adjust the distance between the two adjusting seats 3 and the height of the slipper abutment 4 and the dial indicator fixing block 5. Then, place the plunger part of the plunger to be tested on the plunger placement block 1, and adjust the two product stops 2 and the slipper abutment 4 in sequence to fix the slipper of the plunger to be tested. Place the dial indicator on the dial indicator fixing block 5 so that the end of the dial indicator probe abuts against the tail end of the plunger to be tested. Then, slide the plunger to be tested back and forth and read the maximum value difference ΔS of the dial indicator probe. Then, the axial clearance δ=ΔS.

[0045] In the description of this application, it should be noted that the terms "upper," "lower," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. Unless otherwise expressly specified and limited, the terms "installed," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication between two elements. For those skilled in the art, the specific meaning of the above terms in this application can be understood according to the specific circumstances.

[0046] It should be noted that in this application, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0047] The above description is merely a specific embodiment of this application, enabling those skilled in the art to understand or implement this application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this application. Therefore, this application is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features claimed herein.

Claims

1. A swashplate axial clearance gauge for a plunger assembly of an axial piston pump, characterized in that, include: The placement assembly includes a plunger placement block (1) and two product blocks (2) spaced apart along the X direction on one side of the plunger placement block (1) for clamping the stepped surface of the plunger slipper to be tested, and the two product blocks (2) can move closer to or further away from each other along the X direction; A measuring component located on one side of the placement component in the X direction, the measuring component includes two adjusting seats (3) spaced apart along the Y direction and able to move closer or further apart along the Y direction, wherein one of the adjusting seats (3) is provided with a slipper abutment (4) extending to one of the Y-direction end faces of the plunger placement block (1) and able to slide longitudinally along the current adjusting seat (3), and the other adjusting seat (3) is provided with a dial indicator fixing block (5) extending to the other Y-direction end face of the plunger placement block (1) and able to slide longitudinally along the current adjusting seat (3); Wherein, the Y direction is the axial direction of the plunger to be tested in the detection state, and the X direction is the direction orthogonal to the Y direction in the horizontal plane.

2. The axial clearance gauge for a swashplate-type axial piston pump plunger assembly as described in claim 1, characterized in that: It also includes a support base plate (6), on which both the placement component and the measuring component are mounted.

3. The axial clearance gauge for a swashplate-type axial piston pump plunger assembly as described in claim 2, characterized in that: The bottom of the plunger placement block (1) is fixedly connected to the support base plate (6), and the top of the plunger placement block (1) is provided with a lower groove for matching the shape of the plunger to be tested.

4. The axial clearance gauge for a swashplate-type axial piston pump plunger assembly as described in claim 1, characterized in that: The product block (2) has a waist-shaped hole and a fixing bolt for threading through the waist-shaped hole to the side of the plunger placement block (1).

5. The axial clearance gauge for a swashplate-type axial piston pump plunger assembly as described in claim 2, characterized in that: The support base plate (6) is provided with a Y-axis slide rail (7) protruding from the upper surface of the support base plate (6), and the two adjustment seats (3) are arranged on the Y-axis slide rail (7) and can slide along the Y-axis slide rail (7).

6. The axial clearance gauge for a swashplate-type axial piston pump plunger assembly as described in claim 5, characterized in that: The adjustment seat (3) has a first threaded limiting rod (8) at the bottom of one side facing the plunger placement block (1). One end of the first threaded limiting rod (8) extends into the current adjustment seat (3) to abut against the side of the Y-axis slide rail (7), and the first threaded limiting rod (8) can be displaced in the X-axis within the current adjustment seat (3).

7. The axial clearance gauge for a swashplate-type axial piston pump plunger assembly as described in claim 6, characterized in that: The adjusting seat (3) is provided with a Z-axis slide rail (301) and a Z-axis slider (302) that can slide along the Z-axis slide rail (301) on the side facing the plunger placement block (1). The Z-axis slide rail (301) protrudes from the side of the adjusting seat (3). The Z-axis slider (302) is provided with a second threaded limiting rod (9) on the Y-axis side. One end of the second threaded limiting rod (9) extends into the current Z-axis slider (302) to abut against the side of the Z-axis slide rail (301), and the second threaded limiting rod (9) can be displaced in the Y-axis within the current Z-axis slider (302).

8. The axial clearance gauge for a swashplate-type axial piston pump plunger assembly as described in claim 7, characterized in that: The slipper abutment (4) includes a connecting plate (401) disposed on one of the Z-axis sliders (302), the connecting plate (401) extending to one of the Y-axis end faces of the plunger placement block (1), a holding threaded rod (402) is provided through the connecting plate (401) in the Y-axis direction, and the holding threaded rod (402) can be displaced in the Y-axis direction within the connecting plate (401).

9. The axial clearance gauge for a swashplate-type axial piston pump plunger assembly as described in claim 8, characterized in that: The end of the threaded rod (402) away from the plunger placement block (1) is provided with a rotating handle (403), and the end of the threaded rod (402) near the plunger placement block (1) is provided with a plastic pressure block (404) for abutting the end face of the plunger slipper to be tested.

10. The axial clearance gauge for a swashplate-type axial piston pump plunger assembly as described in claim 8, characterized in that: The dial indicator fixing block (5) is mounted on another Z-axis slider (302) and extends to the other Y-axis end face of the plunger placement block (1). The dial indicator fixing block (5) is provided with a through hole (501) for the dial indicator probe to pass through.

Images