Plunger pump test fixture with adjustable height and angle

Abstract

The utility model discloses a height and angle adjustable test fixture for a plunger pump, and belongs to the technical field of plunger pumps, the plunger pump test fixture comprises a fixed frame, an adjusting plate, a rotating plate and a clamping jaw mechanism, the adjusting plate comprises a first plate body and an adjusting part, and the first plate body is provided with a first avoiding hole; the rotating plate comprises a second plate body, a rotating shaft and an adjusting disc, the rotating shaft is connected with the second plate body, a second avoiding hole is formed in the second plate body, the rotating shaft is rotatably installed on the first plate body, and the second plate body is provided with a straight shaft position and a plurality of inclined shaft positions; a containing groove is formed in the adjusting part, the end, close to the containing groove, of the rotating shaft is connected with an adjusting disc, multiple positioning grooves are formed in the side wall of the containing groove, and a clamping part is arranged on the periphery of the adjusting disc; the clamping jaw mechanism comprises a plurality of clamping jaw assemblies. The plunger pump test fixture can respectively clamp the swash plate type axial plunger pump and the inclined shaft type axial plunger pump when the second plate body is in the straight shaft position and the inclined shaft position, so that the universality of the plunger pump test fixture is effectively improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the plunger pump technical field relates to a kind of plunger pump's test fixture of adjustable height and angle. BACKGROUND

[0002] Plunger pump is a more important structural member of hydraulic system, plunger pump relies on plunger reciprocating in cylinder, so that the volume of sealed working cavity changes to realize oil absorption, oil pressing.For the quality of plunger pump is guaranteed, currently in the production and processing process of plunger pump, staff needs to carry out spot check to plunger pump, the plunger pump being spot checked is clamped by specific fixture, then detection is carried out, wherein swash plate type axial plunger pump and inclined shaft type axial plunger pump, due to the great difference in structure, thus the test fixture of swash plate type axial plunger pump and inclined shaft type axial plunger pump needs to be respectively used two different special test fixtures, which leads to the low versatility of existing test fixture. SUMMARY

[0003] The utility model discloses a kind of plunger pump's test fixture of adjustable height and angle, to solve the technical problem of low versatility of existing plunger pump test fixture.

[0004] The utility model discloses a kind of plunger pump's test fixture of adjustable height and angle, to solve the technical problem of low versatility of existing plunger pump test fixture.

[0005] Technical scheme:

[0006] A kind of plunger pump's test fixture of adjustable height and angle, comprising:

[0007] Fixed frame, the fixed frame is used to place plunger pump;

[0008] Adjusting plate, the adjusting plate includes first plate body and adjusting part, the adjusting part is set to the first plate body, the first plate body is set to the fixed frame, the first plate body is set with the first avoiding hole for avoiding the plunger pump;

[0009] The rotating plate comprises a second plate body, a rotating shaft and an adjusting disc, the rotating shaft is connected with the second plate body, the second plate body is provided with a second avoiding hole for avoiding the plunger pump, the rotating shaft is rotatably installed on the first plate body, the second plate body has a straight shaft position and a plurality of inclined shaft positions, and the second plate body can reciprocate between the straight shaft position and the plurality of inclined shaft positions; the adjusting part is provided with a containing groove on one side of the adjusting disc, the groove bottom of the containing groove is provided with a through hole for the rotating shaft to pass through, one end of the rotating shaft close to the containing groove is connected with the adjusting disc, the side wall of the containing groove is provided with a plurality of positioning grooves, the plurality of positioning grooves are sequentially and spaced apart along the circumference of the containing groove, the outer periphery of the adjusting disc is provided with a clamping part, the rotating shaft is in sliding fit with the first plate body, so that the adjusting disc can move along the axial direction of the rotating shaft, and the clamping part can be clamped with any positioning groove or away from the positioning groove; the straight shaft position and the plurality of inclined shaft positions are each provided with a positioning groove.

[0010] The clamping jaw mechanism comprises a plurality of clamping jaw assemblies, and the plurality of clamping jaw assemblies are arranged on the second plate body and sequentially arranged along the circumference of the second avoiding hole.

[0011] In some embodiments, the first plate body is movably installed on the fixing frame.

[0012] In some embodiments, the fixing frame comprises a bottom plate and a guide column, the first plate body is provided with a guide hole for the guide column to pass through, the guide column is provided with a threaded section, the plunger pump test fixture further comprises an adjusting assembly, the adjusting assembly comprises a first adjusting nut and a second adjusting nut, the first adjusting nut and the second adjusting nut are arranged on the two sides of the first plate body along the axial direction of the guide column respectively, the first adjusting nut and the second adjusting nut are in screw fit with the threaded section, and one side of the first adjusting nut close to the first plate body is in abutment with the first plate body.

[0013] In some embodiments, the number of the guide columns is a plurality, the plurality of guide columns are spaced apart, the number of the guide holes is consistent with that of the guide columns and is arranged in one-to-one correspondence, and the number of the adjusting assembly is consistent with that of the guide columns and is arranged in one-to-one correspondence.

[0014] In some embodiments, each clamping jaw assembly comprises a mounting seat, an adjusting rod and a jaw body, the mounting seat is arranged on the second plate body, the adjusting rod is movably installed on the mounting seat, so that the adjusting rod can move along the axial direction of the adjusting rod relative to the mounting seat, and the jaw body is arranged on one end of the adjusting rod close to the second avoiding hole.

[0015] In some embodiments, the mounting base is provided with an adjusting hole through which the adjusting rod passes, the clamping jaw assembly further comprises a first positioning nut and a second positioning nut, the adjusting rod is provided with a threaded section, the first positioning nut and the second positioning nut are in threaded cooperation with the threaded section, the first positioning nut and the second positioning nut are respectively located on two sides of the mounting base, one side of the first positioning nut towards the mounting base is in abutment with the mounting base, and one side of the second positioning nut towards the mounting base is in abutment with the mounting base.

[0016] In some embodiments, one side of the jaw body away from the mounting base is provided with an arc-shaped clamping surface which is matched with the shape of the plunger pump.

[0017] In some embodiments, one end of the rotating shaft away from the adjusting disc is outwardly protruded to form a protruding part which extends along the axial direction of the rotating shaft, the adjusting disc further comprises an adjusting seat which is provided with a clamping hole, the inner wall of the clamping hole is provided with a plurality of clamping grooves which are arranged in a circumferential direction of the clamping hole and extend along the axial direction of the rotating shaft, and each of the clamping grooves and the clamping hole extends along the axial direction of the rotating shaft, and each of the straight shaft position and the plurality of inclined shaft positions is provided with a corresponding clamping groove, and the protruding part can be inserted into and clamped with any of the clamping grooves.

[0018] In some embodiments, the number of the protruding parts is a plurality, and the plurality of protruding parts are arranged in a circumferential direction of the rotating shaft in sequence, and the number of the protruding parts is consistent with and one-to-one corresponding to the number of the clamping grooves.

[0019] In some embodiments, the number of the clamping parts is a plurality, and the plurality of clamping parts are arranged in a circumferential direction of the adjusting disc in sequence, and the number of the clamping parts is consistent with and one-to-one corresponding to the number of the positioning grooves.

[0020] Advantages

[0021] The second plate body is rotated to the straight shaft position, and then the swash plate type axial plunger pump is clamped by the plurality of clamping jaw assemblies, so that the plunger pump test fixture can clamp the swash plate type axial plunger pump. The second plate body is rotated to the inclined shaft position, so that the second avoiding hole can avoid the inclined shaft type axial plunger pump, and then the inclined shaft type axial plunger pump is clamped by the plurality of clamping jaw assemblies, so that the plunger pump test fixture also clamps the inclined shaft type axial plunger pump, thereby effectively improving the versatility of the plunger pump test fixture. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 The structure diagram of an embodiment of the second plate body of the plunger pump test fixture provided by the utility model when the second plate body is in the straight shaft position.

[0023] Figure 2 Structure schematic diagram of an embodiment of the plunger pump test fixture provided by the utility model in a state that the second plate body can rotate relative to the first plate body;

[0024] Figure 3 Structure schematic diagram of an embodiment of the plunger pump test fixture provided by the utility model in a state that the second plate body is in a skew axis position;

[0025] Figure 4 Structure schematic diagram of an embodiment of the plunger pump test fixture provided by the utility model in a state that the second plate body can rotate relative to the first plate body;

[0026] Figure 5 Structure schematic diagram of an embodiment of the plunger pump test fixture provided by the utility model in a state that the second plate body can rotate relative to the first plate body; Figure 4 Local enlarged schematic diagram at A;

[0027] Figure 6 Structure schematic diagram of an embodiment of the plunger pump test fixture provided by the utility model in a state that the second plate body can rotate relative to the first plate body; Figure 4 Local enlarged schematic diagram at B;

[0028] Figure 7 Structure schematic diagram of an embodiment of the plunger pump test fixture provided by the utility model in a state that the second plate body can rotate relative to the first plate body;

[0029] Figure 8 Structure schematic diagram of an embodiment of the plunger pump test fixture provided by the utility model in a state that the second plate body can rotate relative to the first plate body.

[0030] 100, plunger pump test fixture; 1, fixed frame; 11, bottom plate; 12, guide column; 2, adjusting plate; 21, first plate body; 211, first avoiding hole; 22, adjusting part; 221, accommodating groove; 222, positioning groove; 223, through hole; 23, adjusting seat; 231, clamping hole; 232, clamping groove; 3, rotating plate; 31, second plate body; 311, second avoiding hole; 32, rotating shaft; 321, protruding part; 33, adjusting disc; 331, clamping part; 332, adjusting handle; 4, clamping jaw mechanism; 41, clamping jaw assembly; 411, mounting seat; 412, adjusting rod; 413, jaw body; 4131, arc clamping surface; 414, first positioning nut; 415, second positioning nut; 5, adjusting assembly; 51, first adjusting nut; 52, second adjusting nut. DETAILED DESCRIPTION

[0031] In order to more intuitively and clearly express the structural principle and working method in the utility model example, the embodiments will be introduced below in combination with related drawings. Obviously, the described embodiments are only a part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor belong to the protection scope of the utility model.

[0032] In addition, the description of "first", "second" and the like in the present application is only for the purpose of description, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" can be explicitly or implicitly included at least one of the features.

[0033] Furthermore, the technical solutions of each embodiment of the present application can be combined with each other, but must be based on the realization of a person skilled in the art, and when the combination of technical solutions contradicts each other or cannot be realized, it should be considered that the combination of technical solutions does not exist and is not within the protection scope required by the present application.

[0034] The plunger pump is a relatively important structural part of the hydraulic system, and the plunger pump relies on the reciprocating movement of the plunger in the cylinder to change the volume of the sealed working cavity to realize oil suction and oil compression. In order to ensure the quality of the plunger pump, currently in the production and processing process of the plunger pump, the staff needs to carry out sampling inspection on the plunger pump, and the sampled plunger pump is clamped by a special fixture and then detected. Since there is a large difference in structure, two different special test fixtures need to be used for testing the swash plate type axial plunger pump and the swash shaft type axial plunger pump, which leads to low universality of the existing test fixture.

[0035] The inventor found that the cylinder axis of the swash plate type axial plunger pump coincides with the transmission shaft axis, while the cylinder axis of the swash shaft type axial plunger pump is not on the same straight line as the transmission shaft axis, but forms an angle. Therefore, two different plunger pumps need to be clamped by specific test fixtures, which leads to low universality of the existing test fixture.

[0036] Please refer to Figures 1 to 3As shown, in an embodiment, the plunger pump test fixture 100 comprises a fixing frame 1 for placing the plunger pump, an adjusting plate 2, a rotating plate 3 and a jaw mechanism 4. The adjusting plate 2 comprises a first plate body 21 and an adjusting part 22, the adjusting part 22 is arranged on the first plate body 21, the first plate body 21 is arranged on the fixing frame 1, and the first plate body 21 is provided with a first avoiding hole 211 for avoiding the plunger pump. The rotating plate 3 comprises a second plate body 31, a rotating shaft 32 and an adjusting disc 33, the rotating shaft 32 is connected with the second plate body 31, the second plate body 31 is provided with a second avoiding hole 311 for avoiding the plunger pump, the rotating shaft 32 is rotatably arranged on the first plate body 21, the second plate body 31 has a straight shaft position and a plurality of inclined shaft positions, and the second plate body 31 can reciprocate between the straight shaft position and the plurality of inclined shaft positions. The side of the adjusting part 22 facing the adjusting disc 33 is provided with a containing groove 221, the groove bottom of the containing groove 221 is provided with a through hole 223 for the rotating shaft 32 to pass through, one end of the rotating shaft 32 close to the containing groove 221 is connected with the adjusting disc 33, the side wall of the containing groove 221 is provided with a plurality of positioning grooves 222, the plurality of positioning grooves 222 are sequentially and spaced apart along the circumferential direction of the containing groove 221, the outer periphery of the adjusting disc 33 is provided with a clamping part 331, the rotating shaft 32 is in sliding fit with the first plate body 21, so that the adjusting disc 33 can move along the axial direction of the rotating shaft 32, and the clamping part 331 can be in clamping fit with any one of the positioning grooves 222 or be away from the positioning grooves 222. The straight shaft position and the plurality of inclined shaft positions are each provided with a corresponding positioning groove 222. The jaw mechanism 4 comprises a plurality of jaw assemblies 41, the plurality of jaw assemblies 41 are arranged on the second plate body 31, and the plurality of jaw assemblies 41 are sequentially arranged along the circumferential direction of the second avoiding hole 311.

[0037] When the swash plate type axial piston pump needs to be tested, the adjusting disc 33 can be pulled along the axial direction of the rotating shaft 32 to move away from the accommodating groove 221, and the clamping part 331 moves away from the positioning groove 222, because the rotating shaft 32 is rotatably arranged on the first plate body 21. The adjusting disc 33 can be rotated to drive the second plate body 31 to move to the straight shaft position through the rotating shaft 32, and then the adjusting disc 33 is pushed along the axial direction of the rotating shaft 32 to move to the accommodating groove 221, and the clamping part 331 moves to the positioning groove 222 arranged corresponding to the straight shaft position. The clamping part 331 is clamped with the positioning groove 222 to limit the rotation of the second plate body 31 relative to the first plate body 21. At this time, the first avoiding hole 211 and the second avoiding hole 311 are coaxially arranged and can avoid the swash plate type axial piston pump. Then the swash plate type axial piston pump is clamped by the plurality of jaw assemblies 41, so that the piston pump testing fixture 100 can clamp the swash plate type axial piston pump. When the inclined shaft type axial piston pump needs to be tested, the adjusting disc 33 is pulled along the axial direction of the rotating shaft 32 to move away from the accommodating groove 221, and the clamping part 331 moves away from the positioning groove 222. The adjusting disc 33 is rotated to drive the second plate body 31 to move to the inclined shaft position which is suitable for the inclined angle of the inclined shaft type axial piston pump through the rotating shaft 32, and then the adjusting disc 33 is pushed along the axial direction of the rotating shaft 32 to move to the accommodating groove 221, and the clamping part 331 moves to the positioning groove 222 arranged corresponding to the inclined shaft position. At this time, the first avoiding hole 211 and the second avoiding hole 311 can avoid the inclined shaft type axial piston pump. Then the inclined shaft type axial piston pump is clamped by the plurality of jaw assemblies 41, so that the piston pump testing fixture 100 can also clamp the inclined shaft type axial piston pump, and the versatility of the piston pump testing fixture 100 is improved. It should be noted that the number of inclined shaft positions is multiple, which is suitable for inclined shaft type axial piston pumps with different inclined angles, and further improves the versatility of the piston pump testing fixture 100. It should be further noted that the rotating shaft 32 can be rotatable relative to the first plate body 21 through the shaft hole cooperation, and the rotating shaft 32 can also be rotatable relative to the first plate body 21 through the bearing, that is, the bearing is arranged on the first plate body 21, and the rotating shaft 32 is gap-fitted with the inner ring of the bearing.

[0038] According to the embodiment of the utility model, the adjusting disc 33 is provided with an adjusting handle 332 on the side away from the rotating shaft 32. The adjusting handle 332 is convenient for the operator to hold, and then the operator can pull and rotate the adjusting disc 33.

[0039] Please refer to Figures 1 to 3As shown, in some embodiments, the first plate body 21 is movably mounted on the fixed frame 1. The first plate body 21 can move in the vertical direction relative to the fixed frame 1, so as to adjust the clamping position of the jaw assembly 41. Since the clamping positions of different models of plunger pumps may be different, the clamping position of the jaw assembly 41 is adjusted by adjusting the position of the first plate body 21 to adapt to different models of plunger pumps, thereby effectively improving the versatility of the plunger pump test fixture 100.

[0040] In some embodiments, the fixed frame 1 includes a bottom plate 11 and a guide column 12, the first plate body 21 is provided with a guide hole through which the guide column 12 passes, the guide column 12 is provided with a threaded section, and the plunger pump test fixture 100 further includes an adjusting assembly 5, the adjusting assembly 5 includes a first adjusting nut 51 and a second adjusting nut 52, the first adjusting nut 51 and the second adjusting nut 52 are respectively arranged on the two sides of the first plate body 21 along the axial direction of the guide column 12, the first adjusting nut 51 and the second adjusting nut 52 are in threaded cooperation with the threaded section, the side of the first adjusting nut 51 facing the first plate body 21 abuts against the first plate body 21, and the side of the second adjusting nut 52 facing the first plate body 21 abuts against the first plate body 21. If it is necessary to adjust the position of the first plate body 21, the first adjusting nut 51 and the second adjusting nut 52 can be rotated to move away from the first plate body 21, then the first plate body 21 can move along the axial direction of the guide column 12 under the guidance of the guide column 12 until the jaw assembly 41 moves to the corresponding clamping position of the plunger pump, then the first adjusting nut 51 and the second adjusting nut 52 are rotated to abut against the two sides of the first plate body 21 to limit the movement of the first plate body 21 relative to the guide column 12, thereby effectively improving the versatility and clamping reliability of the plunger pump test fixture 100.

[0041] In some embodiments, the number of guide columns 12 is multiple, the multiple guide columns 12 are arranged at intervals, the guide holes are arranged in one-to-one correspondence with the number of guide columns 12, and the adjusting assemblies 5 are arranged in one-to-one correspondence with the number of guide columns 12. By arranging multiple guide columns 12, the rotation of the first plate body 21 relative to the guide columns 12 can be limited, thereby effectively improving the clamping reliability of the plunger pump test fixture 100 on the plunger pump; and by arranging multiple adjusting assemblies 5 in correspondence with the guide columns 12, the probability of movement of the first plate body 21 relative to the guide columns 12 during testing is further reduced, thereby improving the clamping reliability of the plunger pump test fixture 100 on the plunger pump.

[0042] According to the utility model one embodiment, first board body 21 can be provided with sleeve, guide column 12 passes through the inner ring of sleeve, to make first board body 21 can move relative to guide column 12, guide column 12 is opened with multiple adjusting holes, multiple adjusting holes are sequentially spaced arrangement along the axial direction of guide column 12, sleeve is opened with mounting hole, to make sleeve can pass through mounting hole and any adjusting hole by locating pin to limit the axial movement of first board body 21 relative to guide column 12.

[0043] Please refer to Figure 1 、 Figure 2 and Figure 7 As shown, in some embodiments, each jaw assembly 41 includes a mounting seat 411, an adjusting rod 412 and a jaw body 413, the mounting seat 411 is arranged on the second board body 31, the adjusting rod 412 is movably arranged on the mounting seat 411, so that the adjusting rod 412 can move along the axial direction of the adjusting rod 412 relative to the mounting seat 411, and the jaw body 413 is arranged on one end of the adjusting rod 412 close to the second avoiding hole 311. The adjusting rod 412 is movably arranged on the mounting seat 411, so that the position of the jaw body 413 can be adjusted, and the plunger pump test fixture 100 can clamp plunger pumps of different sizes, thereby improving the versatility of the plunger pump test fixture 100.

[0044] According to the utility model one embodiment, the adjusting rod 412 is provided with a threaded segment, the mounting seat 411 is provided with a threaded hole, the adjusting rod 412 is screw-connected with the threaded hole, and rotating the adjusting rod 412 can also adjust the position of the jaw body 413, thereby improving the versatility of the plunger pump test fixture 100.

[0045] In some embodiments, the mounting base 411 is provided with an adjusting hole through which the adjusting rod 412 passes, the clamping jaw assembly 41 further comprises a first positioning nut 414 and a second positioning nut 415, the adjusting rod 412 is provided with a threaded section, the first positioning nut 414 and the second positioning nut 415 are both in threaded cooperation with the threaded section, the first positioning nut 414 and the second positioning nut 415 are respectively located on two sides of the mounting base 411, one side of the first positioning nut 414 facing the mounting base 411 abuts against the mounting base 411, and one side of the second positioning nut 415 facing the mounting base 411 abuts against the mounting base 411. When it is necessary to adjust the clamping jaw position, the first positioning nut 414 and the second positioning nut 415 can be rotated to disengage from the mounting base 411, then the adjusting rod 412 is moved along the axial direction of the adjusting rod 412 to change the position of the jaw body 413, and the angle of the jaw body 413 can also be changed by rotating the adjusting rod 412 to adapt to different types of plunger pumps, thereby improving the versatility of the plunger pump test fixture 100; when the position adjustment of the jaw body 413 is completed, the first positioning nut 414 and the second positioning nut 415 are rotated again to abut against the two sides of the mounting base 411 respectively, so as to limit the movement of the jaw body 413, thereby providing a certain guarantee for the clamping reliability of the plunger pump test fixture 100.

[0046] In some embodiments, the side of the jaw body 413 away from the mounting base 411 is provided with an arc-shaped clamping surface 4131, which is adapted to the shape of the plunger pump. By setting the clamping surface to be adapted to the shape of the outer contour surface of the plunger pump, the clamping reliability of the plunger pump test fixture 100 is effectively improved.

[0047] In some embodiments, the end of the rotating shaft 32 away from the adjusting disc 33 is outwardly protruding to form a protruding portion 321, the protruding portion 321 extends along the axial direction of the rotating shaft 32, the adjusting plate 2 further comprises an adjusting seat 23, the adjusting seat 23 is provided with a clamping hole 231, the inner wall of the clamping hole 231 is provided with a plurality of clamping grooves 232, the plurality of clamping grooves 232 are arranged in a spaced manner along the circumferential direction of the clamping hole 231, and each clamping groove 232 and the clamping hole 231 extend along the axial direction of the rotating shaft 32, each clamping groove 232 is correspondingly arranged at a straight shaft position or a plurality of inclined shaft positions, and the protruding portion 321 can extend into any clamping groove 232 and be clamped and matched with the clamping groove 232. By clamping and matching the protruding portion 321 with the clamping groove 232, the probability of relative rotation between the second plate body 31 and the first plate body 21 during the test is reduced.

[0048] Please refer to Figure 2 , Figure 4 , Figure 5 and 8As shown in

[0049] As shown in Figure 2 、 Figure 4 and Figure 6 As shown in some embodiments, the number of the clamping portions 331 is multiple, the multiple clamping portions 331 are sequentially arranged along the circumference of the adjusting disc 33, and the clamping portions 331 are arranged in one-to-one correspondence with the positioning grooves 222. By arranging multiple clamping portions 331, and each clamping portion 331 can be clamped and matched with the positioning groove 222, thereby reducing the probability of relative rotation between the second plate body 31 and the first plate body 21 during the test.

[0050] Obviously, the described embodiments are only a part of the embodiments of the present application, not all. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art and related fields without creative labor shall belong to the scope of protection of the present application. The structures, devices and operation methods not specifically described and explained in the present application, if not specially stated and limited, are implemented according to the conventional means in the art.

Claims

1. A test fixture for an adjustable height and angle plunger pump, comprising: The utility model relates to a plunger pump test fixture, comprising: a fixing frame for placing a plunger pump; an adjusting plate comprising a first plate body and an adjusting part provided on the first plate body, the first plate body being provided on the fixing frame and having a first avoiding hole for avoiding the plunger pump; a rotating plate comprising a second plate body, a rotating shaft and an adjusting disc, the rotating shaft being connected with the second plate body, the second plate body having a second avoiding hole for avoiding the plunger pump, the rotating shaft being rotatably mounted on the first plate body, the second plate body having a straight shaft position and a plurality of inclined shaft positions, the second plate body being capable of reciprocating between the straight shaft position and the plurality of inclined shaft positions, the adjusting part having a receiving groove on a side facing the adjusting disc, the groove bottom of the receiving groove having a through hole for the rotating shaft to pass through, one end of the rotating shaft close to the receiving groove being connected with the adjusting disc, the sidewall of the receiving groove having a plurality of positioning grooves, the plurality of positioning grooves being sequentially and spacedly arranged along the circumference of the receiving groove, the outer circumference of the adjusting disc being provided with a clamping part, the rotating shaft being in sliding fit with the first plate body so that the adjusting disc can move along the axial direction of the rotating shaft, the clamping part being capable of being clamped with any one of the positioning grooves or being separated from the positioning grooves, each of the straight shaft position and the plurality of inclined shaft positions having one corresponding positioning groove; a clamping jaw mechanism comprising a plurality of clamping jaw assemblies, each of the plurality of clamping jaw assemblies being provided on the second plate body and sequentially arranged along the circumference of the second avoiding hole.

2. The test fixture for adjustable height and angle ram pumps of claim 1, wherein, The first plate body is movably mounted on the fixing frame.

3. The test fixture for adjustable height and angle ram pumps of claim 2, wherein, The fixing frame comprises a bottom plate and guide columns, the first plate body has guide holes for the guide columns to pass through, the guide columns are provided with threaded segments, the plunger pump test fixture further comprises an adjusting assembly, the adjusting assembly comprises first and second adjusting nuts, the first and second adjusting nuts are respectively provided on the first plate body on both sides along the axial direction of the guide columns, the first and second adjusting nuts are in screw fit with the threaded segments, one side of the first adjusting nut facing the first plate body is in abutment with the first plate body, and one side of the second adjusting nut facing the first plate body is in abutment with the first plate body.

4. The test fixture for adjustable height and angle ram pumps of claim 3, wherein, The number of the guide columns is plural, the guide holes are provided in consistent number and one-to-one correspondence with the guide columns, and the adjusting assembly is provided in consistent number and one-to-one correspondence with the guide columns.

5. The height- and angle-adjustable test fixture for a plunger pump of claim 1, wherein, Each of the clamping jaw assemblies comprises a mounting seat, an adjusting rod and a jaw body, the mounting seat is provided on the second plate body, the adjusting rod is movably mounted on the mounting seat so that the adjusting rod can move along the axial direction of the adjusting rod relative to the mounting seat, and the jaw body is provided on one end of the adjusting rod close to the second avoiding hole.

6. The height- and angle-adjustable test fixture for a plunger pump of claim 5, wherein, The mounting base is provided with an adjusting hole through which the adjusting rod passes, the clamping jaw assembly further comprises a first positioning nut and a second positioning nut, the adjusting rod is provided with a threaded section, the first positioning nut and the second positioning nut are in threaded cooperation with the threaded section, the first positioning nut and the second positioning nut are respectively located on two sides of the mounting base, one side of the first positioning nut facing the mounting base is in abutment with the mounting base, and one side of the second positioning nut facing the mounting base is in abutment with the mounting base.

7. The height- and angle-adjustable test fixture for a plunger pump of claim 5, wherein, The claw body is provided with an arc-shaped clamping surface on a side facing away from the mounting base, and the arc-shaped clamping surface is matched with the shape of the plunger pump.

8. The height- and angle-adjustable test fixture for a plunger pump of any one of claims 1 to 7, characterized in that, The protruding portion is formed on an end of the rotating shaft away from the adjusting disc, extends along the axial direction of the rotating shaft, the adjusting plate further comprises an adjusting seat, the adjusting seat is provided with a clamping hole, the inner wall of the clamping hole is provided with a plurality of clamping grooves, the plurality of clamping grooves are arranged in a spaced manner along the circumferential direction of the clamping hole, and each clamping groove and the clamping hole extend along the axial direction of the rotating shaft, each of the straight shaft positions and the inclined shaft positions is provided with a clamping groove corresponding thereto, and the protruding portion can extend into any clamping groove and be clamped and matched with the clamping groove.

9. The height- and angle-adjustable test fixture for a plunger pump of claim 8, wherein, The number of the protruding portions is a plurality, and the plurality of protruding portions are arranged in sequence along the circumferential direction of the rotating shaft, the number of the protruding portions is consistent with and one-to-one corresponding to the number of the clamping grooves.

10. The height- and angle-adjustable test fixture for a plunger pump of claim 1, wherein, The number of the clamping portions is a plurality, and the plurality of clamping portions are arranged in sequence along the circumferential direction of the adjusting disc, the number of the clamping portions is consistent with and one-to-one corresponding to the number of the positioning grooves.

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