A device and method for detecting the wear of hydraulic pump bodies

Abstract

This invention discloses a device and method for detecting the wear degree of a hydraulic pump body, relating to the technical field of hydraulic pump testing. The invention includes a hydraulic pump body with a drain end and a return end, and further includes: an oil measuring unit comprising an oil reservoir and a support frame for positioning the hydraulic pump body, wherein the oil reservoir contains a detection mechanism for detecting hydraulic oil loss within the hydraulic pump body; and a cleaning unit comprising a drive assembly, a transmission assembly, and a purification assembly. The advantages are: this invention employs a combined detection method of pressure relief detection, remaining oil quantity detection, and waste material type and content detection, enabling rapid detection of the wear degree inside the hydraulic pump body. It can detect the worn parts and their corresponding wear degree within the pump body, and can also detect the amount of hydraulic oil lost during wear, resulting in higher detection efficiency and more accurate detection results.

Description

Technical Field

[0001] This invention relates to the technical field of hydraulic pump testing, and in particular to a device and method for detecting the wear degree of a hydraulic pump body. Background Technology

[0002] A hydraulic pump is a power component of a hydraulic system that converts mechanical energy into hydraulic energy by being driven by an engine or electric motor. Hydraulic pumps are classified into gear pumps, piston pumps, vane pumps, and screw pumps according to their structure. After long-term use, hydraulic pumps usually need to be tested for internal wear using a testing device to determine their service life.

[0003] Existing wear detection devices employ various methods to detect the wear of hydraulic pump bodies. For example, CN208900465U discloses a simple detection device for detecting the wear of gear hydraulic pumps, which includes a hydraulic pump body. An oil outlet pipe is fixedly connected to the oil outlet end of the hydraulic pump body. A sealing joint sleeve is fitted to the bottom end of the oil outlet pipe. Limit blocks are fixedly connected to both the left and right sides of the oil outlet pipe. A threaded rod is inserted through the top of the limit block, and a nut is threaded to the top of the threaded rod.

[0004] Existing testing devices only measure the oil output and duration of the hydraulic pump during testing, without detecting the amount of hydraulic oil lost due to internal wear. The test results are relatively limited. For example, the aforementioned prior art only uses a ball valve and pressure gauge to detect the oil output pressure of the hydraulic pump and uses the oil output pressure to determine internal wear and leakage. This testing method does not detect the real-time volume of hydraulic oil inside the hydraulic pump, meaning it cannot detect the amount of hydraulic oil lost due to internal wear. It also cannot determine the degree and location of wear inside the hydraulic pump during testing, and cannot remove wear debris, thus having certain limitations.

[0005] Therefore, it is urgent to design a device and method for detecting the wear of hydraulic pump bodies to solve the above problems. Summary of the Invention

[0006] To address the shortcomings of existing technologies, this invention provides a device and method for detecting the wear degree of a hydraulic pump body, thus solving the problems mentioned in the background section.

[0007] To achieve the above objectives, the present invention provides the following technical solution: a device for detecting the wear degree of a hydraulic pump body, comprising a hydraulic pump body to be tested placed on a testing platform, wherein the hydraulic pump body is provided with an oil drain end and an oil return end, and further comprising:

[0008] The oil testing unit is set on the testing platform and includes an oil storage tank and a support frame for positioning the hydraulic pump body. The oil storage tank is equipped with a testing mechanism for detecting the hydraulic oil loss in the hydraulic pump body. An oil drain pipe is provided between the oil storage tank and the drain end, and a testing valve for detecting the drain pressure is provided on the oil drain pipe.

[0009] The cleaning unit, set on the testing platform, includes a drive component, a transmission component, and a purification component. The transmission component is equipped with an oil suction plate for driving the flow of hydraulic oil, and the purification component is equipped with a filter plate and a filter box for removing wear impurities from inside the hydraulic oil.

[0010] The drive assembly and the transmission assembly work together to drive the oil suction plate to move, so that the hydraulic oil can flow between the oil reservoir and the purification assembly and the transmission assembly. During the flow, the filter plate and filter box work together to remove wear impurities from the hydraulic oil.

[0011] Preferably, the testing device further includes a testing box, and a testing platform is disposed on the upper part of the testing box, and a control box is disposed on the testing platform;

[0012] The control box is equipped with a control platform, which is used to control the operation and start / stop status of the oil testing unit and the cleaning unit, so as to realize the automated wear detection of the hydraulic pump body.

[0013] Preferably, the support frame is fixedly installed on the testing platform, the support frame is provided with a locking component, and the hydraulic pump body is locked onto the locking component. An oil storage tank is fixedly installed on the support frame via a connecting frame.

[0014] Preferably, the detection mechanism includes a displacement plate slidably installed inside the oil reservoir, and a return spring is fixedly installed between the displacement plate and the inner wall of the oil reservoir. A monitoring scale is provided on the oil reservoir to monitor the real-time position of the displacement plate inside the oil reservoir, thereby determining the amount of hydraulic oil collected in the oil reservoir.

[0015] Preferably, the driving component includes a second support frame fixedly installed on the detection platform, and a servo motor is provided on the second support frame. A driving roller is provided on the driving end of the servo motor. A mounting frame is fixedly installed on the second support frame, and two supporting arc plates are fixedly installed on the mounting frame.

[0016] Preferably, the transmission assembly includes an oil suction cylinder fixedly installed on two supporting arc plates, and an oil suction plate slidably installed inside the oil suction cylinder. A reciprocating mechanism is installed between the oil suction cylinder and the drive roller. An oil return pipe is provided between the oil suction cylinder and the oil return end of the hydraulic pump body, and a control valve is provided on the oil return pipe. A replenishment pipe for replenishing hydraulic oil is fixedly connected to the oil return pipe.

[0017] Preferably, the reciprocating mechanism includes a transmission roller fixedly mounted on the drive roller, and the transmission roller is rotatably connected to the oil suction cylinder. A reciprocating screw is fixedly mounted on the transmission roller and is located inside the oil suction cylinder. A ball bearing nut plate is fitted on the reciprocating screw, and two driven frames are fixedly mounted between the ball bearing nut plate and the oil suction plate.

[0018] Preferably, the purification component includes a cleaning box fixedly installed on a mounting frame, a linkage roller rotatably installed on the second support frame, and the linkage roller is rotatably connected to the cleaning box. A transmission belt is sleeved between the linkage roller and the drive roller. A linkage wheel is fixedly installed on the linkage roller, and multiple stirring blades for stirring hydraulic oil are fixedly installed on the linkage wheel. Each stirring blade is provided with an electromagnetic adsorption plate for adsorbing wear impurities in the hydraulic oil. A filtration mechanism is provided inside the cleaning box.

[0019] Preferably, the filtration mechanism includes an oil guide pipe fixedly connected between the oil storage tank and the cleaning tank, and a filter disc for filtering wear impurities is fixedly connected to the oil guide pipe. A connecting pipe is fixedly connected between the cleaning tank and the oil suction cylinder, and a filter box for filtering friction impurities is fixedly connected to the connecting pipe.

[0020] A method for detecting the wear degree of a hydraulic pump body, used in the aforementioned hydraulic pump body wear degree detection device, includes the following steps:

[0021] S1. When testing the main body of the hydraulic pump, first place it on the support frame and connect the drain pipe on the oil reservoir to the drain end.

[0022] S2. Start the hydraulic pump body to run normally, and simultaneously open the drain pipe to allow the hydraulic oil in the hydraulic pump body to be introduced into the oil tank through the drain pipe. During the transmission process, the oil leakage pressure is detected by the detection valve.

[0023] S3. The hydraulic oil collection volume is detected by the detection mechanism in the oil measuring unit, and the hydraulic oil loss is determined by the collection volume.

[0024] S4. Hydraulic oil is transferred from the oil reservoir to the purification and transmission components through the drive components in the cleaning unit;

[0025] S5. The drive assembly drives the oil suction plate to move back and forth to realize the reciprocating transmission of hydraulic oil. During the transmission process, it works with the filter plate and filter box to filter and adsorb wear impurities in the hydraulic oil. The internal wear degree of the hydraulic pump body is judged by the content of friction impurities.

[0026] S6. After inspection and cleaning are completed, the hydraulic oil is returned to the hydraulic pump body through the return end via the transmission component, and the lost hydraulic oil is replenished.

[0027] This invention provides a device and method for detecting the wear degree of a hydraulic pump body. It has the following beneficial effects:

[0028] 1. When this wear detection device is used to inspect the hydraulic pump body, it can quickly discharge the hydraulic oil inside the hydraulic pump body by cooperating with the oil drain pipe and the detection valve. At the same time, the oil drain pressure of the hydraulic oil is detected in real time. The wear of the hydraulic oil inside the hydraulic pump body can be detected by the magnitude of the oil drain pressure, thereby determining the degree of internal wear of the hydraulic pump body.

[0029] 2. When this wear detection device is used to test the hydraulic pump body, the oil reservoir, displacement plate, and monitoring scale work together to achieve complete conduction and collection of hydraulic oil inside the hydraulic pump body. The content of collected hydraulic oil can be determined by the monitoring scale, and the amount of hydraulic oil loss can be directly judged by the amount of hydraulic oil content, thereby achieving direct detection of the internal wear of the hydraulic pump.

[0030] 3. When this wear detection device is used to test the hydraulic pump body, the transmission component and the drive component work together to enable the oil suction plate to move back and forth in the oil suction cylinder, thereby enabling the hydraulic oil to flow back and forth between the oil suction cylinder and the cleaning box. During the flow process, the filter plate and filter box are used to remove wear impurities in the hydraulic oil.

[0031] 4. When inspecting the hydraulic pump body, this wear detection device can directly filter wear impurities and remove iron-containing impurities in the hydraulic oil through the cooperation of the filter disc, filter box and electromagnetic adsorption plate. The wear location and wear condition inside the hydraulic pump body can be determined by the type and content of wear impurities and iron-containing impurities, resulting in higher detection efficiency.

[0032] In summary, this invention employs a detection method that combines pressure relief detection, oil remaining quantity detection, and waste material type and content detection. This method can quickly detect the degree of wear inside the hydraulic pump body, identify the worn parts and their corresponding wear levels, and detect the amount of hydraulic oil lost during wear. The detection efficiency is higher, and the detection results are more accurate.

[0033] Other features and advantages of the invention will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the invention. The objects and other advantages of the invention may be realized and obtained by means of the structures particularly pointed out in the written description and the accompanying drawings. Attached Figure Description

[0034] The specific embodiments of the present invention will be further described in detail below with reference to the accompanying drawings, wherein:

[0035] Figure 1This is a schematic diagram of a hydraulic pump body wear detection device proposed in this invention;

[0036] Figure 2 for Figure 1 A schematic diagram of the structure after rotation at a certain angle;

[0037] Figure 3 for Figure 2 A schematic diagram of the structure of the testing platform;

[0038] Figure 4 for Figure 3 A schematic diagram of the structure after rotation at a certain angle;

[0039] Figure 5 for Figure 4 A schematic diagram of the structure after removing the detection platform;

[0040] Figure 6 for Figure 5 Schematic diagram of the central oil storage tank and oil drain pipe;

[0041] Figure 7 for Figure 6 Schematic diagram of the internal structure of the central oil storage tank;

[0042] Figure 8 for Figure 5 A schematic diagram of the structure of the servo motor and the oil suction cylinder;

[0043] Figure 9 for Figure 8 Schematic diagram of the internal structure of the oil suction cylinder and cleaning box;

[0044] Figure 10 for Figure 8 Schematic diagram of the servo motor and cleaning box;

[0045] Figure 11 for Figure 10 Internal structure diagram of the cleaning box;

[0046] Figure 12 for Figure 11 Schematic diagram of the servo motor and oil suction cylinder;

[0047] Figure 13 for Figure 12 Schematic diagram of the internal structure of the middle oil suction cylinder;

[0048] Figure 14 for Figure 13 Enlarged schematic diagram of the structure at part A in the middle.

[0049] In the diagram: 1. Detection box, 2. Detection platform, 3. Control box, 4. Control platform, 5. Support frame one, 6. Support frame two, 7. Hydraulic pump body, 8. Servo motor, 9. Oil drain pipe, 10. Oil storage tank, 11. Oil suction cylinder, 12. Oil return pipe, 13. Detection valve, 14. Oil drain end, 15. Oil return end, 16. Mounting frame, 17. Drive roller, 18. Monitoring scale, 19. Oil guide pipe, 20. Displacement plate, 21. Reset spring, 22. Cleaning box, 23. Connecting pipe, 24. Linkage roller, 25. Transmission belt, 26. Filter disc, 27. Filter box, 28. Linkage wheel, 29. Stirring blade, 30. Electromagnetic adsorption plate, 31. Oil suction disc, 32. Reciprocating screw, 33. Driven frame, 34. Ball bearing nut disc, 35. Support arc plate, 36. Connecting rod. Detailed Implementation

[0050] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0051] Example 1: Refer to Figures 1-4 A hydraulic pump body wear detection device includes a hydraulic pump body 7 to be tested placed on a detection platform 2. The hydraulic pump body 7 is provided with an oil drain end 14 and an oil return end 15. The oil drain end 14 is used to drain the hydraulic oil in the hydraulic pump body 7, and the oil return end 15 is used to replenish the hydraulic oil in the hydraulic pump body 7.

[0052] This testing device also includes:

[0053] The oil testing unit, set on the testing platform 2, is used to realize the output and collection of hydraulic oil, and to detect the oil leakage pressure during the output process. At the same time, the amount of hydraulic oil collected is used to detect the amount of hydraulic oil loss, thereby determining the degree of wear inside the hydraulic pump body 7.

[0054] The cleaning unit, located on the detection platform 2, is used to realize the reciprocating transmission flow of hydraulic oil, and to adsorb and filter out impurities and waste materials during the transmission of hydraulic oil. The type and content of the filtered impurities are used to detect the wear parts and corresponding wear conditions inside the hydraulic pump body 7.

[0055] In a further embodiment, the detection device further includes a detection box 1, and a detection platform 2 is disposed on the upper part of the detection box 1, and a control box 3 is disposed on the detection platform 2.

[0056] The control box 3 is equipped with a control platform 4, which is used to control the operation and start / stop status of the oil testing unit and the cleaning unit, so as to realize the automated wear detection of the hydraulic pump body 7 and improve the efficiency and accuracy of wear detection.

[0057] Example 2: Refer to Figures 4-7The technical solution that differs from that of Embodiment 1 is as follows: the oil measuring unit includes an oil tank 10 and a support frame 5 for positioning the hydraulic pump body 7. The support frame 5 is fixedly installed on the testing platform 2. The support frame 5 is provided with a locking component, and the hydraulic pump body 7 is locked and placed on the locking component. The oil tank 10 is fixedly installed on the support frame 5 through a connecting frame.

[0058] Before testing, the hydraulic pump body 7 to be tested is first placed on the locking piece on the support frame 5 to complete the positioning of the hydraulic pump body 7.

[0059] An oil drain pipe 9 is provided between the oil storage tank 10 and the oil drain end 14, and a detection valve 13 for detecting the oil drain pressure is provided on the oil drain pipe 9. Then, the oil drain pipe 9 on the oil storage tank 10 is inserted into the oil drain end 14 on the hydraulic pump body 7 and sealed and fixed.

[0060] Restart the hydraulic pump body 7 to run normally, and after running for a period of time, open the drain pipe 9 to allow the hydraulic oil in the hydraulic pump body 7 to be automatically discharged through the drain end 14 and flow into the oil storage tank 10 through the drain pipe 9. The hydraulic oil in the hydraulic pump body 7 can be collected through the oil storage tank 10. When the hydraulic oil is flowing in the drain pipe 9, start the detection valve 13 to detect the drain pressure, and compare the detected drain pressure with the standard drain pressure of the hydraulic pump body 7. If the pressure results are inconsistent, it means that wear has occurred inside the hydraulic pump body 7.

[0061] In a further embodiment, the oil reservoir 10 is provided with a detection mechanism for detecting the hydraulic oil loss in the hydraulic pump body 7. The detection mechanism includes a displacement plate 20 that is slidably installed in the oil reservoir 10, and a return spring 21 is fixedly installed between the displacement plate 20 and the inner wall of the oil reservoir 10.

[0062] After the hydraulic oil enters the oil storage tank 10 through the drain pipe 9, it will gradually accumulate in the oil storage tank 10 and push the displacement plate 20 to move during the accumulation process.

[0063] The oil reservoir 10 is equipped with a monitoring scale 18, which is used to monitor the real-time position of the displacement plate 20 inside the oil reservoir 10, and then determine the amount of hydraulic oil collected in the oil reservoir 10. Before collecting hydraulic oil, the initial position scale of the displacement plate 20 is monitored and recorded by the monitoring scale 18.

[0064] After the hydraulic oil in the oil tank 10 is collected, the position scale of the displacement plate 20 can be recorded by the monitoring scale 18. The difference between the previous and next position scales can be used to determine the amount of hydraulic oil collected. This can be compared with the standard oil storage capacity of the hydraulic pump body 7 of this model to quickly detect and determine whether there is wear and leakage inside the hydraulic pump body 7. The amount of hydraulic oil collected can also be used to determine the amount of hydraulic oil loss, which is convenient for subsequent replenishment of hydraulic oil.

[0065] Example 3: Refer to Figures 4-5 as well as Figures 8-14 The difference between this embodiment and embodiment two is that the oil measuring unit includes a driving component, a transmission component and a purification component. The transmission component is provided with an oil suction plate 31 for driving the flow of hydraulic oil, and the purification component is provided with a filter plate 26 and a filter box 27 for removing wear impurities inside the hydraulic oil.

[0066] The drive assembly and the transmission assembly work together to drive the oil suction plate 31 to move, so as to realize the flow of hydraulic oil between the oil storage tank 10 and the purification assembly and the transmission assembly. During the flow, the filter plate 26 and the filter box 27 work together to remove wear impurities in the hydraulic oil.

[0067] The drive assembly includes a second support frame 6 fixedly installed on the detection platform 2, and a servo motor 8 is provided on the second support frame 6. A drive roller 17 is provided on the drive end of the servo motor 8. A mounting frame 16 is fixedly installed on the second support frame 6, and two support arc plates 35 are fixedly installed on the mounting frame 16. When the servo motor 8 is started, it will drive the drive roller 17 to rotate.

[0068] In a further embodiment, the transmission assembly includes an oil suction cylinder 11 fixedly mounted on two supporting arc plates 35, and an oil suction plate 31 slidably mounted inside the oil suction cylinder 11. A reciprocating mechanism is installed between the oil suction cylinder 11 and the drive roller 17. The reciprocating mechanism includes a transmission roller fixedly mounted on the drive roller 17, and the transmission roller is rotatably connected to the oil suction cylinder 11. A reciprocating screw 32 is fixedly mounted on the transmission roller, and the reciprocating screw 32 is located inside the oil suction cylinder 11. A ball nut disc 34 is fitted on the reciprocating screw 32, and two driven frames 33 are fixedly mounted between the ball nut disc 34 and the oil suction plate 31.

[0069] When the drive roller 17 rotates, it will drive the reciprocating screw 32 on it to rotate. When the reciprocating screw 32 rotates, it will drive the ball nut disc 34 that is fitted on it to move. When the reciprocating screw 32 rotates, the ball nut disc 34 will move back and forth on it, thereby driving the driven frame 33 and the oil suction disc 31 to move, which can drive the oil suction disc 31 to move back and forth in the oil suction cylinder 11.

[0070] The cooperation between the reciprocating lead screw 32 and the ball nut disc 34 is existing technology. The specific principle is as follows: the reciprocating lead screw 32 is a form of three-dimensional cam pair, which is represented by two threaded grooves with the same pitch and opposite directions. The two ends of the lead screw are connected by a transition curve. Through the rotation of the lead screw, the side of the helical groove pushes the balls placed in the helical groove of the ball nut disc 34 to make axial reciprocating motion, thereby driving the ball nut disc 34 to move back and forth. That is, when the reciprocating lead screw 32 rotates in one direction, it can drive the ball nut disc 34 to make it reciprocate linearly on the reciprocating lead screw 32.

[0071] In a further embodiment, the purification component includes a cleaning box 22 fixedly installed on the mounting frame 16. A filtration mechanism is provided inside the cleaning box 22. The filtration mechanism includes an oil guide pipe 19 fixedly connected between the oil storage tank 10 and the cleaning box 22, and a filter disc 26 for filtering abrasive impurities is fixedly connected to the oil guide pipe 19.

[0072] After the content of hydraulic oil stored in the oil reservoir 10 is detected, the oil guide pipe 19 can be opened to allow the hydraulic oil in the oil reservoir 10 to be introduced into the cleaning box 22, thus completing the conduction of hydraulic oil.

[0073] When hydraulic oil enters the cleaning box 22 through the oil guide pipe 19, the hydraulic oil in the oil guide pipe 19 will first enter the filter plate 26, and then flow into the cleaning box 22 through the connecting hole on the filter plate 26. When the hydraulic oil passes through the filter plate 26, the wear waste carried in it will be blocked by the filter plate 26, thereby completing the initial filtration of wear waste impurities in the hydraulic oil.

[0074] A connecting pipe 23 is fixedly connected between the cleaning box 22 and the oil suction cylinder 11, and a filter box 27 for filtering friction impurities is fixedly connected to the connecting pipe 23. When the oil suction plate 31 moves forward in the oil suction cylinder 11, it will generate suction in the oil suction cylinder 11, which can generate adsorption force through the connecting pipe 23, thereby sucking the hydraulic oil in the cleaning box 22 into the oil suction cylinder 11 through the filter box 27 and the connecting pipe 23.

[0075] When the oil suction plate 31 moves in the reverse direction inside the oil suction cylinder 11, it will push the hydraulic oil sucked in inside the oil suction cylinder 11 in the reverse direction through the connecting pipe 23 and the filter box 27 to the cleaning box 22. During the reciprocating movement, the hydraulic oil will repeatedly contact the filter box 27, so that the wear impurities attached to the hydraulic oil can be thoroughly filtered and removed.

[0076] In a further embodiment, a linkage roller 24 is rotatably mounted on the support frame 26, and the linkage roller 24 is rotatably connected to the cleaning box 22. A transmission belt 25 is sleeved between the linkage roller 24 and the drive roller 17. A linkage wheel 28 is fixedly mounted on the linkage roller 24, and a plurality of stirring blades 29 for stirring hydraulic oil are fixedly mounted on the linkage wheel 28.

[0077] While the servo motor 8 drives the drive roller 17 to rotate to adsorb and push out hydraulic oil, the rotation of the drive roller 17 will drive the linkage roller 24 to rotate under the action of the transmission belt 25. When the linkage roller 24 rotates, it will drive the linkage wheel 28 to rotate. When the linkage wheel 28 rotates, it will drive the multiple stirring blades 29 on it to rotate in the cleaning box 22, which can stir the hydraulic oil in the cleaning box 22, so that the hydraulic oil and the wear impurities in it are more thoroughly dispersed, thereby accelerating the removal efficiency of wear impurities in the hydraulic oil.

[0078] Each stirring blade 29 is equipped with an electromagnetic adsorption plate 30 for adsorbing wear impurities in the hydraulic oil. When the stirring blade 29 rotates, the electromagnetic adsorption plate 30 is activated. The electromagnetic adsorption plate 30 can rotate with the stirring blade 29, so that it can fully contact the hydraulic oil in the cleaning box 22 and adsorb the iron-containing impurities attached to the hydraulic oil at the same time, thereby further cleaning the hydraulic oil impurities.

[0079] In a further embodiment, an oil return pipe 12 is provided between the oil suction cylinder 11 and the oil return end 15 of the hydraulic pump body 7, and a control valve is provided on the oil return pipe 12. A replenishment pipe for replenishing hydraulic oil is fixedly connected to the oil return pipe 12.

[0080] After the impurities in the hydraulic oil are cleaned, the hydraulic oil in the cleaning box 22 can be sucked into the suction cylinder 11 through the suction plate 31. Then, the cleaning box 22 is opened to collect the ordinary impurities and iron-containing impurities. After collection, the types and contents of the impurities are classified and judged. The wear parts inside the hydraulic pump body 7 can be determined by the type of impurities, and the wear degree of the wear parts can be determined by the quantity of the impurities. Thus, the degree of wear inside the hydraulic pump body 7 can be accurately and quickly detected without disassembling the hydraulic pump body 7.

[0081] After the wear detection is completed, the connecting pipe 23 is closed and the return oil pipe 12 is opened simultaneously. The servo motor 8 is started again to drive the suction plate 31 to move. When the suction plate 31 moves, it will push the hydraulic oil in the suction cylinder 11 back to the hydraulic pump body 7 through the return oil pipe 12 and the return oil end 15. During the return oil process, the hydraulic oil missing in the hydraulic pump body 7 is supplemented through the replenishment pipe, so as to achieve full filling of the hydraulic pump body 7, complete the oil replenishment of the hydraulic pump body 7, and improve its operating stability.

[0082] The detection principle of this detection device is as follows: Before the detection, the hydraulic pump body 7 to be tested is first placed on the locking part on the support frame 5 to complete the positioning of the hydraulic pump body 7. Then, the oil drain pipe 9 on the oil tank 10 is inserted into the oil drain end 14 on the hydraulic pump body 7 and sealed and fixed.

[0083] Start the hydraulic pump body 7 to run normally, and after running for a period of time, open the drain pipe 9 to allow the hydraulic oil in the hydraulic pump body 7 to be automatically discharged through the drain end 14 and flow into the oil storage tank 10 through the drain pipe 9. The hydraulic oil in the hydraulic pump body 7 can be collected through the oil storage tank 10. When the hydraulic oil flows in the drain pipe 9, start the detection valve 13 to detect the drain pressure and compare the detected drain pressure with the standard drain pressure of the hydraulic pump body 7. If the pressure results are inconsistent, it means that wear has been detected inside the hydraulic pump body 7.

[0084] After the hydraulic oil enters the oil reservoir 10 through the drain pipe 9, it will gradually accumulate in the oil reservoir 10. During the accumulation process, it will push the displacement plate 20 to move. After the hydraulic oil in the oil reservoir 10 is completely collected, the position scale of the displacement plate 20 is recorded by the monitoring scale 18. The difference between the previous and next position scales is used to determine the amount of hydraulic oil collected. This is compared with the standard oil storage capacity of the hydraulic pump body 7 of this model to quickly detect and determine whether there is wear and leakage inside the hydraulic pump body 7. The amount of hydraulic oil loss is also determined based on the amount of oil collected.

[0085] After the hydraulic oil content stored in the oil reservoir 10 is tested, the oil guide pipe 19 is opened to allow the hydraulic oil in the oil reservoir 10 to be introduced into the cleaning box 22. The hydraulic oil in the oil guide pipe 19 will first enter the filter plate 26, and then flow into the cleaning box 22 through the connecting hole on the filter plate 26. When the hydraulic oil passes through the filter plate 26, the wear waste carried in it will be blocked by the filter plate 26, thus completing the initial filtration of wear waste impurities in the hydraulic oil.

[0086] The servo motor 8 is restarted to drive the drive roller 17 and the reciprocating screw 32 to rotate. When the reciprocating screw 32 rotates, it will drive the oil suction plate 31 to move back and forth in the oil suction cylinder 11 under the cooperation of the ball nut disc 34. When the oil suction plate 31 moves forward in the oil suction cylinder 11, it will generate suction force through the connecting pipe 23, thereby sucking the hydraulic oil in the cleaning box 22 into the oil suction cylinder 11 through the filter box 27 and the connecting pipe 23.

[0087] When the oil suction plate 31 moves in the reverse direction inside the oil suction cylinder 11, it will push the hydraulic oil sucked in inside the oil suction cylinder 11 in the reverse direction through the connecting pipe 23 and the filter box 27 to the cleaning box 22. During the reciprocating movement, the hydraulic oil will repeatedly contact the filter box 27, so that the wear impurities attached to the hydraulic oil can be thoroughly filtered and removed.

[0088] The rotation of the drive roller 17, in conjunction with the transmission belt 25, drives the linkage roller 24 and multiple stirring blades 29 to rotate within the cleaning box 22. When the stirring blades 29 rotate, the electromagnetic adsorption plate 30 on them is activated, which can adsorb iron-containing impurities attached to the hydraulic oil through the electromagnetic adsorption plate 30, thereby further cleaning the impurities in the hydraulic oil.

[0089] After the impurities in the hydraulic oil are cleaned, the hydraulic oil in the cleaning box 22 is sucked into the suction cylinder 11 through the suction plate 31. Then, the cleaning box 22 is opened to collect the ordinary impurities and iron-containing impurities. After collection, the types and contents of the impurities are classified and judged. The wear parts inside the hydraulic pump body 7 can be determined by the type of impurities, and the wear degree of the wear parts can be determined by the quantity of the impurities. Thus, the degree of wear inside the hydraulic pump body 7 can be accurately and quickly detected without disassembling the hydraulic pump body 7.

[0090] This invention also provides a method for detecting the wear degree of a hydraulic pump body, used in the aforementioned hydraulic pump body wear degree detection device, comprising the following steps:

[0091] S1. When testing the hydraulic pump body 7, first place it on the support frame 5 and connect the oil drain pipe 9 on the oil reservoir 10 to the drain end 14.

[0092] S2. Start the hydraulic pump body 7 to run normally, and simultaneously open the drain pipe 9 to allow the hydraulic oil in the hydraulic pump body 7 to be introduced into the oil storage tank 10 through the drain pipe 9. During the transmission process, the oil leakage pressure is detected by the detection valve 13.

[0093] S3. The hydraulic oil collection volume is detected by the detection mechanism in the oil measuring unit, and the hydraulic oil loss is determined by the collection volume.

[0094] S4. Hydraulic oil is transferred from the oil reservoir 10 to the purification component and the transmission component through the drive component in the cleaning unit;

[0095] S5. The drive assembly drives the oil suction plate 31 to move back and forth to realize the reciprocating transmission of hydraulic oil. During the transmission process, it works with the filter plate 26 and filter box 27 to filter and adsorb wear impurities in the hydraulic oil. The internal wear degree of the hydraulic pump body 7 is judged by the content of friction impurities.

[0096] S6. After the inspection and cleaning are completed, the hydraulic oil is returned to the hydraulic pump body 7 through the return end 15 via the transmission component, and the lost hydraulic oil is replenished.

[0097] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A hydraulic pump body wear degree detection device based on, comprising a hydraulic pump body (7) to be detected placed on a detection platform (2), and the hydraulic pump body (7) is provided with a oil leakage end (14) and an oil return end (15), characterized in that, Also include: The oil detection unit is arranged on the detection platform (2), including the oil tank (10) and the support frame one (5) for positioning the hydraulic pump body (7), and the oil tank (10) is provided with detection mechanism for detecting the loss of hydraulic oil in the hydraulic pump body (7), the oil tank (10) and the oil drain end (14) are provided with oil discharge pipe (9), and the oil discharge pipe (9) is provided with detection valve (13) for detecting the discharge pressure; The cleaning unit is arranged on the detection platform (2), including driving assembly, transmission assembly and purification assembly, the transmission assembly is provided with oil suction plate (31) for driving the flow of hydraulic oil, the purification assembly is provided with filter disc (26) and filter box (27) for removing the internal wear impurities of hydraulic oil; The driving assembly and the transmission assembly cooperate to drive the oil suction plate (31) to move, realize the flow of hydraulic oil between the oil tank (10) and the purification assembly, transmission assembly, and realize the removal of wear and tear in the hydraulic oil in the process of cooperation filter disc (26), filter box (27); The support frame one (5) is fixedly installed on the detection platform (2), the support frame one (5) is provided with clamping part, and the hydraulic pump body (7) is clamped and placed on the clamping part, the support frame one (5) is fixedly installed with oil tank (10) through connecting frame; The detection mechanism includes displacement plate (20) slidingly installed in the oil tank (10), and reset spring (21) is fixedly installed between the displacement plate (20) and the inner wall of the oil tank (10), the oil tank (10) is provided with monitoring scale table (18), the monitoring scale table (18) is used for monitoring the real-time position of the displacement plate (20) in the oil tank (10), and then the collection amount of hydraulic oil in the oil tank (10) is judged; The driving assembly includes support frame two (6) fixedly installed on the detection platform (2), and the support frame two (6) is provided with servo motor (8), the driving end of the servo motor (8) is provided with driving roller (17), the support frame two (6) is fixedly installed with mounting bracket (16), and two support arc plates (35) are fixedly installed on the mounting bracket (16); The transmission assembly includes oil suction cylinder (11) fixedly installed on the two support arc plates (35), and the oil suction plate (31) is slidingly installed in the oil suction cylinder (11), the oil suction cylinder (11) and the driving roller (17) are installed with reciprocating mechanism, the oil suction cylinder (11) and the oil return end (15) of the hydraulic pump body (7) are provided with oil return pipe (12), and the control valve is arranged on the oil return pipe (12), the oil return pipe (12) is fixedly connected with the supplement pipe for supplementing the hydraulic oil.

2. The device for detecting the wear degree of the pump body of a hydraulic pump according to claim 1, characterized in that, The detection device further comprises a detection box (1), and the detection platform (2) is arranged on the upper part of the detection box (1), and the detection platform (2) is provided with control box (3); The control platform (4) is arranged on the control box (3), which is used for controlling the operation and on-off state of the oil detection unit and the cleaning unit, realizing the automatic wear detection of the hydraulic pump body (7).

3. The device for detecting the wear degree of the pump body of a hydraulic pump according to claim 1, characterized in that, The reciprocating mechanism comprises a transmission roller fixedly installed on the driving roller (17) and rotatably connected with the oil suction cylinder (11), a reciprocating screw rod (32) fixedly installed on the transmission roller and located in the oil suction cylinder (11), and two driven frames (33) fixedly installed between the reciprocating screw rod (32) and the oil suction disc (31).

4. The device for detecting the wear degree of the pump body of a hydraulic pump according to claim 1, characterized in that, The purification assembly comprises a cleaning box (22) fixedly installed on the mounting bracket (16), a linkage roller (24) rotatably installed on the second supporting bracket (6) and rotatably connected with the cleaning box (22), a transmission belt (25) sleeved between the linkage roller (24) and the driving roller (17), a linkage wheel (28) fixedly installed on the linkage roller (24), a plurality of stirring blades (29) for stirring the hydraulic oil fixedly installed on the linkage wheel (28), and an electromagnetic adsorption plate (30) for adsorbing wear impurities in the hydraulic oil arranged on each stirring blade (29). The cleaning box (22) is provided with a filtering mechanism.

5. The device for detecting the wear degree of the pump body of a hydraulic pump according to claim 4, characterized in that, The filtering mechanism comprises an oil guide pipe (19) fixedly communicated between the oil storage tank (10) and the cleaning box (22), and a filter disc (26) for filtering wear impurities fixedly communicated on the oil guide pipe (19). The cleaning box (22) and the oil suction cylinder (11) are fixedly communicated with a communication pipe (23), and the communication pipe (23) is fixedly communicated with a filter box (27) for filtering friction impurities.

6. A method for detecting the wear degree of a hydraulic pump body based on the wear degree of the hydraulic pump body, for the hydraulic pump body wear degree detection device according to any one of claims 1 to 5, characterized by, The method comprises the following steps: S1, when detecting the hydraulic pump body (7), first place it on the first supporting bracket (5), and connect the oil discharge pipe (9) on the oil storage tank (10) with the oil discharge end (14); S2, start the hydraulic pump body (7) to make it normally operate, and synchronously open the oil discharge pipe (9), so that the hydraulic oil in the hydraulic pump body (7) is guided into the oil storage tank (10) through the oil discharge pipe (9), and the discharge pressure is detected by the detection valve (13) during the conduction process; S3, detect the collection amount of the hydraulic oil by the detection mechanism in the oil measuring unit, and determine the loss amount of the hydraulic oil according to the collection amount; S4, guide the hydraulic oil from the oil storage tank (10) to the purification assembly and the conduction assembly by the driving assembly in the cleaning unit; S5, the driving assembly drives the oil suction disc (31) to reciprocate to realize the reciprocating communication and conduction of the hydraulic oil, and realizes the filtration and adsorption of wear impurities in the hydraulic oil by cooperating with the filter disc (26) and the filter box (27) during the conduction process, so as to determine the internal wear degree of the hydraulic pump body (7) according to the content of friction impurities; S6, after the detection is completed, guide the hydraulic oil to return to the hydraulic pump body (7) through the oil return end (15) by the conduction assembly, and supplement the loss of the hydraulic oil.

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