Compression detection assembly

Abstract

The utility model relates to the technical field of hydraulic pressure, in particular to a pressing detection assembly. A pressing detection assembly comprises a supporting assembly, a pressing assembly and a detection assembly, and a plunger pump is vertically arranged on the supporting assembly; the downward pressing assembly is located above the plunger pump, and the downward pressing assembly presses down and tightly presses the supporting assembly; and the displacement detection piece is located on the downward pressing assembly, and when the downward pressing assembly presses the supporting assembly, the displacement detection piece detects the distance from the downward pressing assembly to the top end of the plunger pump. The technical problems that in the prior art, gaskets need to be replaced, operation is complex, and machining efficiency is low are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of hydraulic pressure, in particular to a compression detection component. Background Art

[0002] Existing plunger machines, especially bevel axis plunger machines, have a cylinder body provided in their outer shell, a center hole is formed at the center of the cylinder body, and plunger holes are distributed circumferentially of the center hole. The plunger is slidably assembled in the plunger hole, one end of the center rod is slidably assembled in the center hole, and the other end of the center rod extends out of the center hole to form a ball head to movably cooperate with the ball socket on the main shaft; the end of the center rod extending into the center hole cooperates with the cylinder body through an elastic member. In order to reduce friction and extend service life, a gasket is installed at the bottom of the center hole of the cylinder body, and the two ends of the elastic member act on the center rod and the gasket respectively. Under the action of the elastic member, the cylinder body is pressed against the distribution plate, and the distribution plate is pressed against the end cover of the outer shell. To ensure the normal operation of the plunger machine, there must be a certain gap between the center rod and the gasket. If the gap is too small, when the inclined axis plunger machine works for a long time, the various parts will expand due to heat, and the center rod, gasket and cylinder body will expand to form a dead point, resulting in the plunger machine being unable to change the displacement; if the gap is too large, the leakage during operation will increase, the efficiency will decrease, and there will also be a risk of flushing the oil seal.

[0003] In order to control the gap between the center rod and the gasket, it is often achieved by adjusting the thickness of the gasket. However, in the prior art, gaskets of different thicknesses are often selected based on experience, and it is impossible to accurately measure the gap between the center rod and the gasket, and then make real-time adjustments based on the measurement results, and the adjustment accuracy is low. For example, the document with application number CN202110883551.7 discloses a measuring tool, a measuring method, and a cylinder gasket debugging method, and specifically discloses: a measuring tool for measuring the gap between the end face of the center rod of a plunger machine and the gasket, which includes a positioning assembly, a pusher, and a measuring member. The positioning assembly includes a positioning seat and a driving member. The positioning seat is fixedly assembled on the housing, and the driving member can move relative to the positioning seat. During measurement, the end cover of the plunger machine is removed, and the positioning seat is assembled on the shell. The positioning seat and the driving member can cooperate to limit the position of the cylinder body of the plunger machine to the same position as the position formed by pressing the cylinder body after the end cover is assembled; then, the pushing member drives the driving member to move axially relative to the positioning seat, and the driving member drives the cylinder body to move toward the center rod until the gasket in the cylinder body abuts against the end face of the center rod, that is, the axial movement of the driving member eliminates the gap between the end face of the center rod and the gasket. The measuring member only needs to measure and calculate the axial movement displacement of the driving member to obtain the gap between the end face of the center rod and the gasket.

[0004] In the above prior art, it is necessary to install the shim in advance and then measure the gap. If the gap does not meet the requirements, the shim is replaced. This may require two shims to be installed to achieve the effect of controlling the gap, which is complicated and has low processing efficiency. Utility Model Content

[0005] In order to solve the technical problems in the prior art that the gasket needs to be replaced, the operation is complicated, and the processing efficiency is low, the utility model provides a compression detection component to solve the above technical problems.

[0006] In order to solve the above technical problems, the present invention provides a compression detection assembly, comprising:

[0007] a support assembly, on which the plunger pump is vertically placed;

[0008] A pressing assembly, the pressing assembly being located above the plunger pump and pressing down and compacting the supporting assembly;

[0009] A displacement detecting member is located on the pressing assembly. When the pressing assembly presses the supporting assembly, the displacement detecting member detects the distance from the pressing assembly to the top of the plunger pump.

[0010] According to one embodiment of the present invention, the down-pressing assembly includes a down-pressing plate and a down-pressing column. The down-pressing plate is assembled by vertical sliding. The down-pressing column is vertically assembled below the down-pressing plate. When the down-pressing plate slides vertically downward, the down-pressing column can press the supporting assembly.

[0011] According to an embodiment of the present invention, the displacement detecting member is arranged on the lower pressure plate, and the displacement detecting member is arranged facing the axis of the plunger pump.

[0012] According to one embodiment of the present invention, the plunger pump extends into the support assembly and is positioned and supported by the support assembly.

[0013] According to one embodiment of the present invention, a frame is further included, and the supporting assembly and the pressing assembly are both assembled on the frame.

[0014] According to one embodiment of the present utility model, the frame includes a bottom plate and a top plate, the bottom plate and the top plate are connected by a column, the support assembly is assembled on the bottom plate, the down-pressing assembly slides along the column, and the top plate is equipped with a driving device for driving the down-pressing assembly to move.

[0015] According to one embodiment of the present invention, the support assembly is slidably assembled on the base plate through a sliding assembly, and the support assembly can slide to a placement position and a detection position. Locking structures are respectively provided on the base plate corresponding to the placement position and the detection position to lock the position of the support assembly.

[0016] According to an embodiment of the present invention, a connecting plate is further provided between the supporting assembly and the sliding assembly, and the supporting assembly is elastically supported by the connecting plate.

[0017] According to an embodiment of the present invention, a telescopic righting assembly is further provided on the frame. There are at least two groups of telescopic righting assemblies distributed around the periphery of the plunger pump. The telescopic righting assemblies extend to right the plunger pump.

[0018] According to one embodiment of the present utility model, the plunger pump includes a main shaft, a cylinder body and a distribution plate arranged from bottom to top in the vertical direction, the main shaft and the cylinder body are matched through a center rod, a detection pressure head is provided in the middle of the distribution plate, and a straightening tool is provided between the main shaft and the cylinder body.

[0019] Based on the above technical solution, the technical effects that can be achieved by the present invention are:

[0020] 1. The compression detection component of the present invention can position and support the plunger pump by setting a support component. The displacement detection component is set on the pressing component, and the relative position of the displacement detection component and the pressing component is constant. When the pressing component presses down to compress the support component, the displacement detection component can detect the distance to the top of the plunger pump from a constant height. With a standard plunger pump equipped with a gasket as a reference, when the standard plunger pump is set on the support component, after the pressing component is pressed down, the displacement detection component measures the distance to the top of the plunger pump as the standard distance. The distance of the plunger pump without the gasket in the subsequent test is compared with the standard distance, and the difference is the thickness of the gasket that needs to be assembled. Through the above-mentioned compression detection method, the gasket thickness required for the plunger pump can be easily obtained, and then a gasket of appropriate thickness can be selected and assembled into the plunger pump without taking it out and replacing it, thereby improving the processing efficiency of the plunger pump;

[0021] 2. The compression detection assembly of the present invention is provided with a pressing assembly including a pressing plate and a pressing column. The vertical sliding of the pressing plate can drive all the pressing columns to press down synchronously. The structure of the pressing column can ensure that the supporting assembly is pressed down tightly while reducing obstruction and avoiding unnecessary interference. The displacement detection member is assembled on the pressing plate. The relative position of the displacement detection member and the pressing column is constant. The displacement detection member is arranged directly opposite the axis of the plunger pump, and can accurately detect the distance of the plunger pump.

[0022] 3. In the compression detection assembly of the present invention, the plunger pump is extended into the support assembly for support, which can realize the positioning support of the plunger pump; a detection pressure head is provided in the middle of the bottom end of the valve plate of the plunger pump to facilitate the detection in conjunction with the displacement detection component; a straightening tool is provided between the main shaft and the cylinder body to keep the plunger pump in a vertical state as a whole;

[0023] 4. The compression detection component of the present invention can achieve structural integrity by setting up a frame, and the support component and the downward pressure component are all set on the frame; the support component is slidably assembled on the base plate, and the support component can slide to the placement position to facilitate the placement of the plunger pump. After the plunger pump is placed, it can slide to the detection position for detection, and then the placement position and the detection position are both provided with locking structures, which can lock the position of the support component, thereby ensuring the accuracy of the operation; a telescopic righting component is also provided on the frame. When the support component supports the plunger pump in the detection position, the telescopic righting component can be extended to right the plunger pump so that it is in a vertical state. After righting, the telescopic righting component can be retracted without causing interference. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a structural diagram of the compression detection assembly of the present utility model;

[0025] Figure 2 is a cross-sectional view of the compression detection assembly;

[0026] Figure 3 is a structural diagram of the support assembly;

[0027] Figure 4 It is a structural schematic diagram of the support component from another perspective;

[0028] Figure 5 This is the main view of the support assembly;

[0029] Figure 6 for Figure 5 AA cross-sectional view;

[0030] Figure 7 It is a structural diagram of the pressing component and the displacement detection component;

[0031] Figure 8 It is a structural diagram of the rack;

[0032] Figure 9 This is a structural diagram of the support assembly being slidably assembled on the base plate;

[0033] Figure 10 is a structural diagram of the connecting plate;

[0034] Figure 11 It is a structural diagram of the plunger pump;

[0035] Figure 12 for Figure 11 BB cross-sectional view;

[0036] In the figure: 1-support assembly; 11-upper support plate; 12-lower support plate; 13-connecting column; 14-positioning tooling; 15-spindle fixing tooling; 2-downward pressure assembly; 21-lower pressure plate; 211-linear bearing; 22-lower pressure column; 23-driving device; 3-displacement detection part; 4-frame; 41-base plate; 411-support column; 412-limit block; 42-top plate; 43-column; 5-sliding assembly; 51-slide rail; 52-slider; 6-locking structure; 7-sensing part; 8-connecting plate; 81-center hole; 82-handle; 83-block; 831-slot; 84-impact block; 10-plunger pump; 101-spindle; 102-cylinder body; 103-distribution plate; 104-center rod; 105-bearing; 20-detection pressure head; 30-straightening tooling. DETAILED DESCRIPTION

[0037] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only some embodiments of the present invention, not all embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is in no way intended to limit the present invention and its application or use. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0038] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, they indicate the presence of features, steps, operations, devices, components and / or combinations thereof.

[0039] Unless otherwise specifically stated, the relative arrangement of the parts and steps, numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention. At the same time, it should be understood that, for ease of description, the sizes of the various parts shown in the accompanying drawings are not drawn according to actual proportional relationships. The technology, methods and equipment known to those of ordinary skill in the relevant art may not be discussed in detail, but in appropriate cases, the technology, methods and equipment should be considered as part of the specification. In all examples shown and discussed here, any specific value should be interpreted as being merely exemplary, rather than as a limitation. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that similar numbers and letters represent similar items in the following figures, and therefore, once an item is defined in one figure, it does not need to be further discussed in subsequent figures.

[0040] In the description of the present invention, it needs to be understood that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "horizontal, vertical, vertical, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings. They are only for the convenience of describing the present invention and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the scope of protection of the present invention; the directional words "inside and outside" refer to the inside and outside relative to the outline of each component itself.

[0041] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used herein to describe the spatial positional relationship of a device or feature to other devices or features as shown in the figures. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figures. For example, if the device in the drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0042] In addition, it should be noted that the use of words such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. Unless otherwise stated, the above words have no special meaning and therefore cannot be understood as limiting the scope of protection of this utility model.

[0043] like Figure 1-12As shown, this embodiment provides a compression detection component, including a support component 1, a downward pressure component 2 and a displacement detection component 3. The plunger pump 10 is vertically placed on the support component 1, and the downward pressure component 2 is located above the plunger pump 10. After the downward pressure component 2 presses down the support component 1, the displacement detection component 3 detects the distance from it to the top of the plunger pump 10. The displacement detection part 3 is assembled on the pressing component 2, and the relative position of the displacement detection part 3 and the pressing component 2 is constant. During the detection, a standard plunger pump 10 with a gasket is first placed on the support component 1. After the pressing component 2 presses down and compacts the support component 1, the displacement detection part 3 detects that the distance from it to the top of the standard plunger pump 10 is the standard distance. After taking out the standard plunger pump, the plunger pump 10 to be detected is placed on the support component 1. After the pressing component 2 presses down and compacts the support component 1, the displacement detection part 3 detects the distance from it to the top of the plunger pump 10 to be detected and compares it with the standard distance. The difference is the thickness of the required gasket. You can then select a gasket of appropriate thickness and place it in the plunger pump 10. No detection or replacement is required, and it can be done in one step.

[0044] The support assembly 1 is a hollow support structure that facilitates the insertion of the plunger pump 10 into the support assembly 1 for positioning and support. The support assembly 1 includes an upper support plate 11 and a lower support plate 12, which are arranged parallel to each other and connected as a whole by a connecting column 13. The upper surface of the upper support plate 11 is provided with a positioning fixture 14, and the upper surface of the lower support plate 12 is provided with a main shaft fixing fixture 15. When the plunger pump 10 is placed on the support assembly 1, the main shaft 101 of the plunger pump 10 extends into the main shaft fixing fixture 15 and is positioned by the main shaft fixing fixture 15; the bearing 105 outside the main shaft 101 extends into the positioning fixture 14 and is positioned and supported by the positioning fixture 14.

[0045] As a preferred technical solution of this embodiment, both the upper support plate 11 and the lower support plate 12 can be configured as square plates, with the centers of the upper support plate 11 and the lower support plate 12 located on the same vertical line. A hole is formed in the center of each of the upper support plate 11 and the lower support plate 12 to facilitate insertion of the plunger pump 10. Preferably, the size of the lower support plate 12 is smaller than that of the upper support plate 11 to reduce the volume and avoid unnecessary interference.

[0046] As the preferred technical solution of this embodiment, the positioning tool 14 is a hollow cylindrical structure, the inner wall of the positioning tool 14 is adapted to the shape of the plunger pump 10, and a stepped surface is provided at the upper end opening of the positioning tool 14, and the plunger pump 10 can be positioned and supported by the stepped surface.

[0047] The pressing assembly 2 is vertically slidably assembled above the plunger pump 10. When the pressing assembly 2 slides downward, it can press the support assembly 1, fix the position of the support assembly 1 and the plunger pump 10 on it, and facilitate the displacement detection member 3 to detect the distance to the top of the plunger pump 10. The pressing assembly 2 includes a lower pressing plate 21 and a lower pressing column 22. The lower pressing plate 21 is vertically slidably assembled, and the lower pressing column 22 is vertically assembled below the lower pressing plate 21. When the lower pressing plate 21 slides downward, the lower pressing column 22 can press the support assembly 1.

[0048] As a preferred technical solution of this embodiment, at least two lower pressure columns 22 are provided, and the lower pressure columns 22 can be arranged around the outer periphery of the plunger pump 10. When the lower pressure plate 21 slides downward, the lower pressure columns 22 move downward accordingly, and the lower pressure columns 22 can press the upper support plate 11 of the support assembly 1 to limit the position of the support assembly 1.

[0049] The displacement detecting member 3 is mounted on the pressing assembly 2, specifically, the displacement detecting member 3 is mounted on the pressing plate 21. The displacement sensor 3 is arranged opposite to the axis of the plunger pump 10 placed on the supporting assembly 1.

[0050] Both the support assembly 1 and the down-press assembly 2 are mounted on a frame 4. The frame 4 comprises a base plate 41, a top plate 42, and uprights 43. The top plate 42 is positioned above the base plate 41, and the two plates are integrally connected by uprights 43. The support assembly 1 is slidably mounted on the base plate 41, while the down-press assembly 2 is slidably mounted on the uprights 43. The drive mechanism 23 of the down-press assembly 2 is mounted on the top plate 42. The drive mechanism 23 can be a pneumatic cylinder, an oil cylinder, or other structure, and drives the down-press plate 21 to slide vertically.

[0051] Specifically, the support assembly 1 is assembled on the base plate 41 through the sliding assembly 5. The sliding assembly 5 includes a slide rail 51 and a slider 52. The slide rail 51 extends linearly, and the slider 52 slides along the slide rail 51. The support assembly 1 is connected to the slider 52.

[0052] As a preferred technical solution of this embodiment, the sliding assembly 5 can be set into two groups, and the two groups of sliding assemblies are arranged in parallel. Two sliders 52 can be set on each slide rail 51, so that the four sliders 52 can form a stable support for the support assembly 1.

[0053] As a preferred technical solution of this embodiment, the size of the top plate 42 can be smaller than that of the bottom plate 41, and the top plate 42 is located above one end of the bottom plate 41. The support assembly 1 can move along the sliding assembly 5 to the bottom of the top plate 42 and can also leave the bottom of the top plate 42. A detection position is set below the top plate 42. When the support assembly 1 is in the detection position, the plunger pump 10 thereon is located directly below the displacement detection member 3; a placement position is set below the top plate 42, which can facilitate the placement of the plunger pump 10 on the support assembly 1 without causing interference.

[0054] As a preferred technical solution of this embodiment, the lower pressing plate 21 is assembled on the column 43 through a linear bearing 211 , and the lower pressing plate 21 performs linear motion in the vertical direction along the column 43 .

[0055] In order to achieve stable support for the support assembly 1 , a connecting plate 8 is further provided between the sliding assembly 5 and the support assembly 1 . The lower surface of the connecting plate 8 is connected to the slider 52 , and the support assembly 1 is elastically supported by the connecting plate 8 .

[0056] As a preferred technical solution of this embodiment, a center hole is provided at the center of the connecting plate 8, and the support assembly 1 can pass through the center hole. The upper support plate 11 is located above the connecting plate 8. The upper support plate 11 and the connecting plate 8 are connected by screws. A spring is provided on the screw, and the spring is located between the upper support plate 11 and the connecting plate 8. The screws and springs are provided in multiple groups and symmetrically distributed between the upper support plate 11 and the connecting plate 8. Preferably, a vertically extending guide shaft is also provided on the upper support plate 11, and the connecting plate 8 cooperates with the guide shaft through a linear bearing. The guide shaft and the linear bearing can also be provided in multiple groups and symmetrically distributed between the upper support plate 11 and the connecting plate 8 to limit the relative movement between the connecting plate 8 and the upper support plate 11 to only in the vertical direction, without any deviation in other directions.

[0057] As a preferred technical solution of this embodiment, to limit the range of motion of connecting plate 8 and support assembly 1, two limit blocks 412 are provided on the bottom plate 41 of the frame 4, spaced apart. Correspondingly, a protruding bumper 84 is provided on the lower surface of connecting plate 8. This bumper 84 can be abutted by the limit blocks 412 to limit the range of motion of connecting plate 8 and support assembly 1.

[0058] As a preferred technical solution of this embodiment, in order to lock the position of the support assembly 1 in the detection position and the placement position, a locking structure 6 is further provided on the bottom plate 41, and a locking structure 6 is provided in both the detection position and the placement position. Correspondingly, a card block 83 is provided on the side of the connecting plate 8, and a card slot 831 facing the side where the locking structure 6 is located is provided on the card block 83, and the locking end of the locking structure 6 can be extended into the card slot 831 to achieve locking. Specifically, the locking structure 6 can be a telescopic cylinder, and its telescopic end can be extended into the card slot 831 to lock the connecting plate 8, and then lock the position of the support assembly 1. Preferably, in order to control the operation of the locking structure 6, a sensor 7 is also provided next to each locking structure 6. After the sensor 7 senses that the connecting plate 8 has reached the detection position or the placement position, it sends a signal to trigger the locking structure 6 to extend to lock the position of the connecting plate 8.

[0059] As a preferred technical solution of this embodiment, in order to facilitate the sliding of the connecting plate 8 and the supporting assembly 1 thereon, a handle 82 is also connected to one side of the connecting plate 8. The handle 82 can be grasped and pushed and pulled, so that the connecting plate 8 drives the supporting assembly 1 thereon to slide along the slide rail 51.

[0060] As a preferred technical solution of this embodiment, to ensure the stability of the connecting plate 8 and support assembly 1 in the detection position, support columns 411 are distributed on the upper surface of the bottom plate 41 located in the detection position. When the connecting plate 8 and support assembly 1 are in the detection position, the lower support plate 12 can be supported by the support columns 411, ensuring measurement accuracy.

[0061] The plunger pump 10 is placed on the support assembly 1. The plunger pump 10 to be tested includes a main shaft 101, a cylinder 102, and a port plate 103 arranged vertically from bottom to top. A bearing 105 is provided on the outside of the main shaft 101. The main shaft 101 and the cylinder 102 are connected by a center rod 104. When the plunger pump 10 is placed on the support assembly 1, the lower end of the main shaft 101 extends into the main shaft fixing fixture 15 and is positioned. The outer surface of the bearing 105 is limited and supported by the stepped surface at the upper end of the positioning fixture 14.

[0062] As the preferred technical solution of this embodiment, in order to ensure that the axis of the plunger pump 10 is in a vertical state, a straightening fixture 30 is provided between the cylinder body 102 and the main shaft 101. The straightening fixture 30 can be sleeved on the center rod 104. The upper end face of the straightening fixture 30 is in contact with the end face of the cylinder body 102 facing the main shaft 101, and the lower end face of the straightening fixture 30 is in contact with the end face of the main shaft 101 facing the cylinder body 102, thereby ensuring the coaxiality of the cylinder body 102 and the main shaft 101.

[0063] As a preferred technical solution of this embodiment, a detection pressure head 20 is inserted into the axial hole of the distribution plate 103 to facilitate the displacement detection member 3 to detect the distance.

[0064] As a preferred technical solution of this embodiment, in order to ensure that the plunger pump 10 is in a vertical state, a telescopic righting assembly (not shown in the figure) is further provided. The telescopic righting assembly can be provided in two groups, which are arranged on the columns 43 and are respectively located on both sides of the cylinder body 102 of the plunger pump 10. The telescopic righting assembly includes a telescopic cylinder and a righting head. The telescopic cylinder is assembled on the two columns 43 on one side, and the righting head is assembled on the telescopic end of the telescopic cylinder. When the plunger pump 10 is in the detection position, the two telescopic cylinders of the two telescopic righting assemblies simultaneously drive the two righting heads to move toward the cylinder body 102, righting the cylinder body 102 in a vertical position.

[0065] Based on the above structure, the compression detection assembly of this embodiment operates as follows: First, grip handle 82 to slide connecting plate 8 and support assembly 1 to the placement position. Sensor 7 at the placement position senses the connection plate 8 moving to the placement position, triggering locking mechanism 6 to extend into slot 831, locking the connection plate 8 in place. At this point, the plunger pump 10 to be tested can be placed on support assembly 1.

[0066] Then, unlock the locking structure 6, slide the connecting plate 8 and the support assembly 1 to the detection position, and after the sensing member 7 at the detection position senses that the connecting plate 8 has moved to the detection position, trigger the locking structure 6 to extend into the card slot 831, locking the position of the connecting plate 8.

[0067] Then, two sets of telescopic straightening components extend to straighten the cylinder body, and retract after straightening to avoid interference.

[0068] Finally, the driving device 23 drives the lower pressing plate 21 to slide downward until the lower pressing column 23 presses the upper supporting plate 11 , and the displacement detecting member 3 detects the distance to the top end of the plunger pump 10 .

[0069] The detected distance is compared with the standard distance detected when a standard plunger pump with a gasket is placed. The difference between the two is the thickness of the gasket that needs to be assembled between the cylinder body 102 and the center rod 104.

[0070] The embodiments of the present invention are described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Various changes can be made within the scope of knowledge possessed by ordinary technicians in this field without departing from the purpose of the present invention.

Claims

1. A compression detection assembly, characterized in that: include: A support assembly (1), wherein the plunger pump (10) is vertically placed on the support assembly (1); A pressing assembly (2), the pressing assembly (2) being located above the plunger pump (10), and the pressing assembly (2) pressing down to tighten the supporting assembly (1); A displacement detecting member (3) is located on the pressing assembly (2). When the pressing assembly (2) presses the supporting assembly (1), the displacement detecting member (3) detects the distance from the top end of the plunger pump (10).

2. A compression detection assembly according to claim 1, characterized in that: The pressing assembly (2) includes a pressing plate (21) and a pressing column (22). The pressing plate (21) is vertically slidably assembled, and the pressing column (22) is vertically assembled below the pressing plate (21). When the pressing plate (21) vertically slides downward, the pressing column (22) can press the supporting assembly (1).

3. A compression detection assembly according to claim 2, characterized in that: The displacement detection member (3) is arranged on the lower pressure plate (21), and the displacement detection member (3) is arranged facing the axis of the plunger pump (10).

4. A compression detection assembly according to claim 1, characterized in that: The plunger pump (10) extends into the support assembly (1) and is positioned and supported by the support assembly (1).

5. The compression detection assembly according to claim 1, characterized in that: It also includes a frame (4), on which the support assembly (1) and the pressing assembly (2) are both assembled.

6. A compression detection assembly according to claim 5, characterized in that: The frame (4) includes a bottom plate (41) and a top plate (42), wherein the bottom plate (41) and the top plate (42) are connected via a column (43), the support assembly (1) is mounted on the bottom plate (41), the pressing assembly (2) slides along the column (43), and the top plate (42) is equipped with a driving device (23) for driving the pressing assembly (2) to move.

7. A compression detection assembly according to claim 6, characterized in that: The support assembly (1) is slidably assembled on the base plate (41) via a sliding assembly (5); the support assembly (1) can slide to a placement position and a detection position; locking structures (6) are respectively provided on the base plate (41) corresponding to the placement position and the detection position to lock the position of the support assembly (1).

8. The compression detection assembly according to claim 7, characterized in that: A connecting plate (8) is further provided between the supporting assembly (1) and the sliding assembly (5), and the supporting assembly (1) is elastically supported by the connecting plate (8).

9. The compression detection assembly according to claim 5, characterized in that: The frame (4) is also provided with telescopic righting assemblies, which are in at least two groups and are distributed around the periphery of the plunger pump (10). The telescopic righting assemblies extend to right the plunger pump (10).

10. The compression detection assembly according to claim 1, characterized in that: The plunger pump (10) includes a main shaft (101), a cylinder body (102) and a distribution plate (103) arranged from bottom to top in a vertical direction. The main shaft (101) and the cylinder body (102) are matched through a center rod (104). A detection pressure head (20) is provided in the middle of the distribution plate (103). A straightening tool (30) is provided between the main shaft (101) and the cylinder body (102).

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