Abrasion resistance testing machine for vane of vane pump

Abstract

The invention discloses a vane pump blade wear resistance testing machine, and relates to the technical field of vane pump blade performance test.The vane pump blade wear resistance testing machine comprises a base, a rotating shaft is installed on the base through an operation assembly, a plurality of testing blades are fixedly installed at one end of the rotating shaft, and a working barrel is fixedly connected to the base; a testing millstone is mounted on the inner wall of the working barrel, and a liquid flow simulation assembly is further mounted on the base; the liquid flow simulation assembly comprises a liquid box, a return pipe, a return port, a working pipe, a working turbine, a connecting pipe, a connecting hose and a fixing pipe, the liquid box is fixedly connected to the base, one end of the return pipe is fixedly connected to the liquid box, the other end of the return pipe penetrates through the base and is fixedly connected to the working barrel, and the return port is formed in the working barrel. According to the invention, the real working state of the vane pump can be better simulated, multi-aspect wear test operation can be carried out, and the test quality is improved.

Description

Technical Field

[0001] The invention relates to the technical field of vane pump blade performance testing, in particular to a vane pump blade wear resistance testing machine. Background Art

[0002] The prior art discloses a vane pump blade wear tester with application number CN201520807726.6, which proposes that one of the main factors limiting the service life of the vane pump is the friction and wear between the blades and the blade groove surfaces. In order to ensure production quality, it is necessary to simulate the friction environment of the blades and test the wear resistance of the blades.

[0003] The above-mentioned shortcomings of the existing technology are that the blade sample in the existing device is directly in contact with the friction disk for friction testing, and only the fuel injector is used to assist in fuel injection. During the actual operation of the vane pump, the friction area of the blade is immersed in liquid. The presence of liquid will have a greater impact on the friction of the blade, and the existing technology solution cannot simulate this well.

[0004] At the same time, as the rotation speed of the blades changes, the speed of the liquid flow will also change. The fast-flowing liquid will impact the blades, which in turn affects the friction state of the blades. At the same time, in the actual production process, the impact position of the fluid on the blades is also different. The change in the impact position will also affect the friction state of the blades. The existing technical solutions do not conduct simulation tests for such problems, which is not conducive to the high-quality implementation of wear resistance tests.

[0005] Therefore, we propose a vane pump blade wear tester to solve the above problems. Summary of the Invention

[0006] The purpose of the present invention is to solve the problems existing in the prior art and to propose a vane pump blade wear resistance testing machine.

[0007] In order to achieve the above object, the present invention adopts the following technical solutions: A vane pump blade wear tester comprises a base, a rotating shaft is mounted on the base via an operating assembly, a plurality of test blades are fixedly mounted on one end of the rotating shaft, a working cylinder is fixedly connected to the base, a test grinding disc is mounted on the inner wall of the working cylinder, and a liquid flow simulation assembly is also mounted on the base; The liquid flow simulation component includes a liquid tank, a reflux pipe, a reflux port, a working pipe, a working turbine, a connecting pipe, a connecting hose and a fixed pipe. The liquid tank is fixedly connected to the base, one end of the reflux pipe is fixedly connected to the liquid tank, and the other end of the reflux pipe passes through the base and is fixedly connected to the working cylinder. The reflux port is opened on the working cylinder, and the two ends of the reflux pipe are respectively connected to the reflux port and the liquid tank. The working pipe is rotatably connected to the rotating shaft, the working turbine is fixedly connected to the rotating shaft, and the working turbine is located in the working pipe. The fixed pipe is fixed on the liquid tank, the connecting hose is fixedly connected to the fixed pipe, the connecting pipe is fixedly connected to the other end of the connecting hose, and the connecting pipe is installed on the base through a position control structure. The other end of the connecting pipe is connected and fixed to the working pipe, and a conveying structure is installed on the working pipe.

[0008] As another technical solution, the conveying structure includes multiple conveying holes, multiple conveying pipes and multiple injection holes. The multiple conveying holes are all opened on the lower end side wall of the working pipe, the multiple conveying pipes are all installed on the working pipe, and the multiple conveying pipes are connected to the multiple conveying holes, and the multiple injection holes are respectively opened on the multiple conveying pipes.

[0009] As another technical solution, an impact variable control structure is installed on the working tube, and the impact variable control structure includes a control shell, a control chamber, an annular groove, an annular block and multiple connecting rods. The control shell is rotatably connected to the working tube, the annular groove is opened on the outer wall of the working tube, the annular block is rotatably connected in the annular groove, the annular block is fixedly connected to the control shell, the control chamber is opened in the control shell, and the control chamber is connected to multiple delivery holes and multiple delivery pipes, one end of multiple connecting rods is fixedly connected to the control shell, and the other end of multiple connecting rods is fixedly connected to the rotating shaft, and multiple injection holes are unequally distributed on multiple delivery pipes.

[0010] As another technical solution, the operating component includes a support frame, a lifting device, a lifting shaft, a mounting frame and a rotating device. The support frame is fixedly connected to the base, and the lifting device is fixedly mounted on the other end of the support frame. The lifting shaft is mounted on the lifting device, and the mounting frame is fixedly connected to the other end of the lifting shaft. The rotating device is fixedly mounted on the mounting frame, and the rotating shaft is fixedly connected to the output end of the rotating device.

[0011] As another technical solution, the position control structure includes a position control frame, a position control slot, a position control block and a position control rod. The position control frame is fixedly connected to the base, and the position control slot is opened on the position control frame. The position control block is slidably connected in the position control slot, and one end of the position control rod is fixedly connected to the position control block, and the other end of the position control rod is fixedly connected to the connecting pipe.

[0012] As another technical solution, a mounting ring is fixedly connected to the inner wall of the working cylinder, a plurality of mounting holes are opened on the mounting ring, mounting bolts are slidably connected in the plurality of mounting holes, the plurality of mounting bolts are fixedly connected to the test grinding disc, and mounting nuts are threadedly connected to the plurality of mounting bolts.

[0013] As another technical solution, the upper end of the working tube is provided with multiple feed ports, and the upper end of the working tube is fixedly connected to a feed shell, the connecting tube is fixedly connected to the feed shell, and the connecting tube is connected to the inner cavity of the feed shell, and the multiple feed ports are all connected to the inner cavity of the feed shell.

[0014] As another technical solution, a plurality of feet are fixedly connected to the lower end surface of the base.

[0015] Compared with the prior art, the present invention has the following beneficial effects: 1. In the present invention, when the rotating shaft controls the test blade to contact the test grinding disc for the wear test, the liquid tank and the working cylinder will cooperate to immerse the test area in the liquid. At the same time, the rotating shaft drives the working turbine to rotate, so that the liquid can circulate, simulating the working state of a real vane pump, thereby better completing the test work; 2. In the present invention, the working turbine connected to the rotating shaft can change its rotational speed according to the rotational speed of the test blade, thereby changing the liquid delivery speed. In conjunction with the delivery pipe and the injection hole, the liquid can impact the blade at different speeds, thereby completing the blade wear test more comprehensively. 3. In the present invention, multiple delivery pipes can rotate along with multiple test blades while maintaining the liquid spray. Here, multiple spray holes are opened in unequal amounts on multiple delivery pipes, so that different test blades are subjected to different liquid impact positions. By coordinating the work of multiple test blades, different test requirements can be completed efficiently, meeting the wear resistance test needs of the staff. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the three-dimensional structure of a vane pump blade wear tester proposed by the present invention; Figure 2 This is a bottom-up perspective structural diagram of a vane pump blade wear tester proposed by the present invention; Figure 3 This is a partial three-dimensional structural diagram of a vane pump blade wear tester proposed by the present invention; Figure 4 A partial three-dimensional structural cross-sectional view of a vane pump blade wear tester proposed by the present invention; Figure 5 This is a sectional view of the annular groove structure of a vane pump blade wear tester proposed by the present invention; Figure 6 This is a sectional view of the three-dimensional structure of the mounting ring of a vane pump blade wear tester proposed by the present invention; Figure 7 This is a sectional view of the three-dimensional structure of the feed inlet of a vane pump blade wear tester proposed by the present invention; Figure 8 This is a sectional view of the three-dimensional structure of the working turbine part of a vane pump blade wear resistance testing machine proposed by the present invention.

[0017] In the figure: 1 base, 2 rotating shaft, 3 test blade, 4 working cylinder, 5 test grinding disc, 6 liquid box, 7 return pipe, 8 return port, 9 working pipe, 10 working turbine, 11 connecting pipe, 12 connecting hose, 13 fixing pipe, 14 delivery hole, 15 delivery pipe, 16 injection hole, 17 control chamber, 18 annular groove, 18 annular groove, 19 annular block, 20 connecting rod, 21 support frame, 22 lifting device, 23 lifting shaft, 24 mounting frame, 25 rotating device, 26 position control frame, 27 position control groove, 28 position control block, 29 position control rod, 30 mounting ring, 31 mounting hole, 32 mounting bolt, 33 mounting nut, 34 feed port, 35 feed empty shell, 36 pad, 37 control shell. DETAILED DESCRIPTION

[0018] Reference Figures 1-8 A vane pump blade wear tester includes a base 1, a rotating shaft 2 is mounted on the base 1 through an operating component, a plurality of test blades 3 are fixedly mounted on one end of the rotating shaft 2, a working cylinder 4 is fixedly connected to the base 1, a test grinding disc 5 is mounted on the inner wall of the working cylinder 4, and a liquid flow simulation component is also mounted on the base 1; The rotating shaft drives multiple test blades 3 to rotate, and the test blades 3 contact the test grinding disc 5 to rotate, completing the friction test work, and then the staff completes the wear test; The liquid flow simulation component includes a liquid tank 6, a return pipe 7, a return port 8, a working pipe 9, a working turbine 10, a connecting pipe 11, a connecting hose 12 and a fixed pipe 13. The liquid tank 6 is fixedly connected to the base 1. One end of the return pipe 7 is fixedly connected to the liquid tank 6, and the other end of the return pipe 7 passes through the base 1 and is fixedly connected to the working cylinder 4. The return port 8 is opened on the working cylinder 4, and the two ends of the return pipe 7 are respectively connected with the return port 8 and the liquid tank 6. The working pipe 9 is rotatably connected to the rotating shaft 2. The working turbine 10 is fixedly connected to the rotating shaft 2, and the working turbine 10 is located in the working pipe 9. The fixed pipe 13 is fixed on the liquid tank 6. The connecting hose 12 is fixedly connected to the fixed pipe 13. The connecting pipe 11 is fixedly connected to the other end of the connecting hose 12, and the connecting pipe 11 is installed on the base 1 through a position control structure. The other end of the connecting pipe 11 is connected and fixed to the working pipe 9. A conveying structure is installed on the working pipe 9. Here, the liquid tank 6 and the working cylinder 4 are connected by means of the return pipe 7, so that the contact friction area of the test blade 3 and the test grinding disc 5 is immersed in the liquid. When the wear test is carried out, the liquid can fully contact the test blade 3 and the test grinding disc 5, simulating the working environment of the vane pump, so that the wear test work is completed with higher quality. At the same time, the rotating shaft 2 drives the working turbine 10 to rotate, so that the liquid in the liquid tank 6 enters the working cylinder 4 through the fixed pipe 13, the connecting hose 12, the connecting pipe 11 and the working pipe 9, and cooperates with the return pipe 7 to complete the circulation flow, further simulating the real environment, so that the wear test work is better completed; Reference Figure 4 The conveying structure includes a plurality of conveying holes 14, a plurality of conveying pipes 15 and a plurality of injection holes 16. The plurality of conveying holes 14 are all opened on the lower end side wall of the working pipe 9. The plurality of conveying pipes 15 are all installed on the working pipe 9, and the plurality of conveying pipes 15 are connected to the plurality of conveying holes 14. The plurality of injection holes 16 are respectively opened on the plurality of conveying pipes 15. With the help of multiple delivery holes 14, the liquid in the working tube 9 enters the delivery tube 15, and then is sprayed onto the multiple test blades 3 below through multiple injection holes 16. This can simulate the state in which the blades are impacted by the liquid flow when the vane pump is actually working. At the same time, the liquid flow speed will change synchronously with the change in the rotation speed of the test blades 3 driven by the rotating shaft 2, and the impact force will also change and adjust accordingly, thereby better completing the simulated wear test work; Reference Figure 4 and Figure 5 An impact variable control structure is installed on the working tube 9, and the impact variable control structure includes a control shell 37, a control chamber 17, an annular groove 18, an annular block 19 and a plurality of connecting rods 20. The control shell 37 is rotatably connected to the working tube 9, the annular groove 18 is opened on the outer wall of the working tube 9, the annular block 19 is rotatably connected in the annular groove 18, the annular block 19 is fixedly connected to the control shell 37, the control chamber 17 is opened in the control shell 37, and the control chamber 17 is connected to the plurality of delivery holes 14 and the plurality of delivery pipes 15. One end of the plurality of connecting rods 20 is fixedly connected to the control shell 37, and the other end of the plurality of connecting rods 20 is fixedly connected to the rotating shaft 2. The plurality of injection holes 16 are unequally distributed on the plurality of delivery pipes 15; The multiple injection holes 16 are unequally distributed on the multiple delivery pipes 15, that is, the number and position of the injection holes 16 on the multiple delivery pipes 15 are different. Due to the presence of the connecting rod 20, the multiple delivery pipes 15 rotate with the rotating shaft 2 and the test blades 3. The multiple delivery pipes 15 can always maintain consistent alignment with the multiple test blades 3. The multiple delivery pipes 15 can use the different states of their own injection holes 16 to distribute different liquid impacts on different positions of the multiple test blades 3. The multiple test blades 3 can cooperate to complete the test work under different impact states, which greatly meets the test needs of the staff. Reference Figure 1 The operating assembly includes a support frame 21, a lifting device 22, a lifting shaft 23, a mounting frame 24 and a rotating device 25. The support frame 21 is fixedly connected to the base 1, and the lifting device 22 is fixedly mounted on the other end of the support frame 21. The lifting shaft 23 is mounted on the lifting device 22, and the mounting frame 24 is fixedly connected to the other end of the lifting shaft 23. The rotating device 25 is fixedly mounted on the mounting frame 24, and the rotating shaft 2 is fixedly connected to the output end of the rotating device 25. The lifting device 22 controls the lifting shaft 23 to rise, so that the structures such as the mounting frame 24 and the rotating device 25 are at a high position, which is convenient for the staff to replace and install the structures such as the test blade 3 and the test grinding disc 5. The lifting device 22 controls the lifting shaft 23 to descend, so that the installed test blade 3 descends and contacts the test grinding disc 5. The rotating device 25 controls the rotation of the rotating shaft 2, and then controls the test blade 3 to rotate on the test grinding disc 5 to complete the wear test. Reference Figure 1 The position control structure includes a position control frame 26, a position control slot 27, a position control block 28 and a position control rod 29. The position control frame 26 is fixedly connected to the base 1, and the position control slot 27 is opened on the position control frame 26. The position control block 28 is slidably connected in the position control slot 27, and one end of the position control rod 29 is fixedly connected to the position control block 28, and the other end of the position control rod 29 is fixedly connected to the connecting pipe 11; With the help of the sliding of the control block 28 in the control groove 27, the connecting pipe 11 and the working pipe 9 connected to the control rod 29 can be stably raised and lowered without unexpected rotation along with the rotating shaft 2, thereby ensuring that the liquid can be pumped smoothly when the working turbine 10 rotates. The presence of the connecting hose 12 prevents interference in the lifting and lowering work. Reference Figure 6 A mounting ring 30 is fixedly connected to the inner wall of the working cylinder 4, and a plurality of mounting holes 31 are opened on the mounting ring 30. Mounting bolts 32 are slidably connected in the plurality of mounting holes 31. The plurality of mounting bolts 32 are fixedly connected to the test grinding disc 5, and the plurality of mounting bolts 32 are threadedly connected to mounting nuts 33; Place the test grinding disc 5 into the working cylinder 4 so that the multiple mounting bolts 32 are distributed and inserted into the multiple mounting holes 31. Then, screw the multiple mounting nuts 33 onto the corresponding mounting bolts 32 to complete the installation of the test grinding disc 5 in the fixed position of the working cylinder 4. Reference Figure 7 The upper end of the working tube 9 is provided with a plurality of feed ports 34, and the upper end of the working tube 9 is fixedly connected to a feed shell 35, the connecting tube 11 is fixedly connected to the feed shell 35, and the connecting tube 11 is communicated with the inner cavity of the feed shell 35, and the plurality of feed ports 34 are all communicated with the inner cavity of the feed shell 35; The working pipe 9 is connected to the connecting pipe 11 by means of the feed port 34 and the feed shell 35. When the working turbine 10 rotates and performs suction, the liquid in the connecting pipe 11 can enter the working pipe 9 through the feed shell 35 and the feed port 34, and then perform subsequent work. Reference Figure 2 , a plurality of feet 36 are fixedly connected to the lower end surface of the base 1; The feet 36 make the placement of the base 1 more stable, thereby making the wear test workflow more stable.

[0019] During the use of the present invention, first, the lifting device 22 controls the lifting shaft 23 to rise, so that the structures such as the mounting frame 24 and the rotating device 25 are at a high position, and the staff performs the replacement and installation work of the test blade 3 and the test grinding disc 5 and other structures, and places the test grinding disc 5 into the working cylinder 4, so that the multiple mounting bolts 32 are distributed and inserted into the multiple mounting holes 31, and then the multiple mounting nuts 33 are threadedly connected to the corresponding mounting bolts 32 to complete the installation work of the test grinding disc 5 on the working cylinder 4. After completing the installation and fixing work of the test blade 3, the lifting device 22 controls the lifting shaft 23 to descend, so that the installed test blade 3 descends and contacts the test grinding disc 5, and the rotating device 25 controls the rotation of the rotating shaft 2, and then controls the test blade 3 to rotate on the test grinding disc 5 to complete the wear test work; Here, the liquid tank 6 and the working cylinder 4 are connected by the return pipe 7, so that the contact friction area of the test blade 3 and the test grinding disc 5 is immersed in the liquid. When the wear test is carried out, the liquid can fully contact the test blade 3 and the test grinding disc 5, simulating the working environment of the vane pump, so that the wear test work can be completed with higher quality. At the same time, the rotating shaft 2 drives the working turbine 10 to rotate, so that the liquid in the liquid tank 6 enters the working cylinder 4 through the fixed pipe 13, the connecting hose 12, the connecting pipe 11 and the working pipe 9, and cooperates with the return pipe 7 to complete the circulation flow, further simulating the real environment, so that the wear test work can be better completed. The multiple delivery holes 14 allow the liquid in the working pipe 9 to enter the delivery pipe 15, and then be sprayed onto the multiple test blades 3 below through the multiple injection holes 16. Here, the state in which the vane pump is actually working and the blades are impacted by the liquid flow can be simulated. At the same time, the liquid flow speed will change synchronously with the change in the rotation speed of the test blade 3 driven by the rotating shaft 2, and the impact force will also change and adjust, thereby better completing the simulated wear test work. The multiple injection holes 16 are distributed in unequal amounts on the multiple delivery pipes 15, that is, the number and position of the injection holes 16 on the multiple delivery pipes 15 are different. Due to the existence of the connecting rod 20, the multiple delivery pipes 15 will rotate with the rotating shaft 2 and the test blades 3. The multiple delivery pipes 15 can always maintain consistent alignment with the multiple test blades 3. The multiple delivery pipes 15 can use their own different states of the injection holes 16 to distribute different liquid impacts on different positions of the multiple test blades 3. The multiple test blades 3 can cooperate to complete the test work under different impact states, which greatly meets the test needs of the staff.

Claims

1. A vane pump blade wear tester, comprising a base (1), characterized in that: A rotating shaft (2) is mounted on the base (1) via an operating assembly, a plurality of test blades (3) are fixedly mounted on one end of the rotating shaft (2), a working cylinder (4) is fixedly connected to the base (1), a test grinding disc (5) is mounted on the inner wall of the working cylinder (4), and a liquid flow simulation assembly is also mounted on the base (1); The liquid flow simulation component includes a liquid tank (6), a return pipe (7), a return port (8), a working pipe (9), a working turbine (10), a connecting pipe (11), a connecting hose (12) and a fixed pipe (13), wherein the liquid tank (6) is fixedly connected to the base (1), one end of the return pipe (7) is fixedly connected to the liquid tank (6), and the other end of the return pipe (7) passes through the base (1) and is fixedly connected to the working cylinder (4), the return port (8) is opened on the working cylinder (4), and the two ends of the return pipe (7) are respectively connected to the return port (8) and the liquid tank (6), and the working turbine (10) is connected to the working cylinder (4). The working tube (9) is rotatably connected to the rotating shaft (2), the working turbine (10) is fixedly connected to the rotating shaft (2), and the working turbine (10) is located in the working tube (9), the fixed tube (13) is fixed to the liquid tank (6), the connecting hose (12) is fixedly connected to the fixed tube (13), the connecting tube (11) is fixedly connected to the other end of the connecting hose (12), and the connecting tube (11) is installed on the base (1) through a position control structure, the other end of the connecting tube (11) is connected and fixed to the working tube (9), and a conveying structure is installed on the working tube (9).

2. A vane pump blade wear tester according to claim 1, characterized in that: The conveying structure comprises a plurality of conveying holes (14), a plurality of conveying pipes (15) and a plurality of injection holes (16), wherein the plurality of conveying holes (14) are all opened on the lower end side wall of the working pipe (9), the plurality of conveying pipes (15) are all installed on the working pipe (9), and the plurality of conveying pipes (15) are connected to the plurality of conveying holes (14), and the plurality of injection holes (16) are respectively opened on the plurality of conveying pipes (15).

3. A vane pump blade wear tester according to claim 2, characterized in that: The working tube (9) is provided with an impact variable control structure, which includes a control shell (37), a control chamber (17), an annular groove (18), an annular block (19) and a plurality of connecting rods (20). The control shell (37) is rotatably connected to the working tube (9), the annular groove (18) is opened on the outer wall of the working tube (9), the annular block (19) is rotatably connected in the annular groove (18), the annular block (19) is fixedly connected to the control shell (37), the control chamber (17) is opened in the control shell (37), and the control chamber (17) is communicated with a plurality of delivery holes (14) and a plurality of delivery pipes (15), one end of each of the plurality of connecting rods (20) is fixedly connected to the control shell (37), and the other end of each of the plurality of connecting rods (20) is fixedly connected to the rotating shaft (2), and the plurality of injection holes (16) are unequally distributed on the plurality of delivery pipes (15).

4. A vane pump blade wear tester according to claim 1, characterized in that: The operating assembly includes a support frame (21), a lifting device (22), a lifting shaft (23), a mounting frame (24) and a rotating device (25), wherein the support frame (21) is fixedly connected to the base (1), and the lifting device (22) is fixedly mounted on the other end of the support frame (21), the lifting shaft (23) is mounted on the lifting device (22), and the mounting frame (24) is fixedly connected to the other end of the lifting shaft (23), the rotating device (25) is fixedly mounted on the mounting frame (24), and the rotating shaft (2) is fixedly connected to the output end of the rotating device (25).

5. The vane pump blade wear tester according to claim 1, characterized in that: The position control structure comprises a position control frame (26), a position control slot (27), a position control block (28) and a position control rod (29); the position control frame (26) is fixedly connected to the base (1), and the position control slot (27) is opened on the position control frame (26); the position control block (28) is slidably connected in the position control slot (27), and one end of the position control rod (29) is fixedly connected to the position control block (28), and the other end of the position control rod (29) is fixedly connected to the connecting pipe (11).

6. The vane pump blade wear tester according to claim 1, characterized in that: A mounting ring (30) is fixedly connected to the inner wall of the working cylinder (4), and a plurality of mounting holes (31) are opened on the mounting ring (30). Mounting bolts (32) are slidably connected in the plurality of mounting holes (31), and the plurality of mounting bolts (32) are fixedly connected to the test grinding disc (5), and mounting nuts (33) are threadedly connected to the plurality of mounting bolts (32).

7. The vane pump blade wear tester according to claim 1, characterized in that: The upper end of the working tube (9) is provided with a plurality of feed ports (34), and the upper end of the working tube (9) is fixedly connected to a feed shell (35), the connecting tube (11) is fixedly connected to the feed shell (35), and the connecting tube (11) is in communication with the inner cavity of the feed shell (35), and the plurality of feed ports (34) are all in communication with the inner cavity of the feed shell (35).

8. The vane pump blade wear tester according to claim 1, characterized in that: A plurality of feet (36) are fixedly connected to the lower end surface of the base (1).

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