Hydraulic pump body wear degree detection device and detection method

Abstract

The invention discloses a pump body wear degree detection device and method based on a hydraulic pump, and relates to the technical field of hydraulic pump detection. The hydraulic pump comprises a hydraulic pump body which is provided with an oil drainage end and an oil return end, and further comprises an oil detection unit which comprises an oil storage tank and a first supporting frame used for positioning the hydraulic pump body, and a detection mechanism used for detecting loss of hydraulic oil in the hydraulic pump body is arranged in the oil storage tank; the cleaning unit comprises a driving assembly, a conduction assembly and a purification assembly. The hydraulic pump body wear degree detection device has the advantages that the detection mode that decompression pressure detection, residual oil quantity detection and waste material type and content detection are matched is adopted, the detection of the wear degree in the hydraulic pump body can be rapidly achieved, and the wear degree of the wear part in the hydraulic pump body and the wear degree of the corresponding part can be detected; the loss amount of the hydraulic oil during abrasion can be detected, the detection efficiency is higher, and the detection result is more accurate.

Description

Technical Field

[0001] The present invention relates to the technical field of hydraulic pump detection, and in particular to a device and method for detecting the wear degree of a hydraulic pump body. Background Art

[0002] A hydraulic pump is a power element in a hydraulic system that converts mechanical energy into hydraulic energy driven by an engine or electric motor. Hydraulic pumps are divided into gear pumps, plunger pumps, vane pumps, and screw pumps according to their structure. After long-term use, a hydraulic pump usually needs to be tested for internal wear using a detection device to determine its service life.

[0003] Existing wear detection devices use several methods to detect the hydraulic pump body. For example, a simple detection device for detecting the wear of a gear hydraulic pump with publication number CN208900465U includes a hydraulic pump body, an oil outlet end of the hydraulic pump body is fixedly connected to an oil outlet pipe, the bottom end of the oil outlet pipe is sleeved with a sealing joint sleeve, and the left and right sides of the oil outlet pipe are fixedly connected to limit blocks, the top of the limit block is inserted with a threaded rod, and the top end of the threaded rod is threadedly connected to a nut;

[0004] When performing detection, the existing detection device only detects the oil output volume and oil output time of the hydraulic pump, and does not detect the loss of hydraulic oil when wear occurs inside the hydraulic pump. The detection result is relatively simple. For example, the prior art referenced above only detects the oil output pressure of the hydraulic pump through a ball valve and a pressure gauge, and judges internal wear and leakage based on the oil output pressure. This detection method does not detect the real-time amount of hydraulic oil inside the hydraulic pump, that is, it cannot detect the loss of hydraulic oil when the hydraulic pump is worn. At the same time, it is also impossible to determine the degree of wear and the wear location inside the hydraulic pump during detection, and it is impossible to eliminate worn waste, which has certain limitations.

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

[0006] In view of the deficiencies in the prior art, the present invention provides a device and method for detecting the wear degree of a hydraulic pump body, which solves the problems raised in the above background technology.

[0007] To achieve the above objectives, the present invention is implemented through the following technical solutions: a device for detecting the wear degree of a hydraulic pump body, comprising a hydraulic pump body to be detected placed on a detection platform, and the hydraulic pump body is provided with an oil drain port and an oil return port, and further comprising:

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

[0009] The cleaning unit is provided on the detection platform and includes a driving component, a conducting component and a purification component. The conducting component is provided with an oil suction plate for driving the flow of hydraulic oil, and the purification component is provided with a filter plate and a filter box for removing wear impurities inside the hydraulic oil;

[0010] The driving assembly and the transmission assembly cooperate to drive the oil suction plate to move, so as to realize the flow of hydraulic oil between the oil storage tank and the purification assembly and the transmission assembly, and cooperate with the filter plate and the filter box to remove the wear impurities in the hydraulic oil during the flow process.

[0011] Preferably, the detection device further comprises a detection box, and the detection platform is arranged on the upper part of the detection box, and a control box is arranged on the detection platform;

[0012] A control platform is provided on the control box, which is used to control the operation and opening and closing status of the oil measuring unit and the cleaning unit, thereby realizing automatic wear detection of the hydraulic pump body.

[0013] Preferably, the support frame 1 is fixedly mounted on the detection platform, a clamping piece is provided on the support frame 1, and the hydraulic pump body is clamped and placed on the clamping piece, and an oil storage tank is fixedly mounted on the support frame 1 through a connecting frame.

[0014] Preferably, the detection mechanism includes a displacement plate slidably installed in the oil storage tank, and a return spring is fixedly installed between the displacement plate and the inner wall of the oil storage tank. A monitoring scale is provided on the oil storage tank, and the monitoring scale is used to monitor the real-time position of the displacement plate in the oil storage tank, and then determine the collection amount of hydraulic oil in the oil storage tank.

[0015] Preferably, the driving assembly includes a support frame 2 fixedly mounted on the detection platform, and a servo motor is provided on the support frame 2, a driving roller is provided on the driving end of the servo motor, a mounting frame is fixedly mounted on the support frame 2, and two supporting arc plates are fixedly mounted on the mounting frame.

[0016] Preferably, the conduction component includes an oil suction cylinder fixedly mounted on two supporting arc plates, and an oil suction plate is slidably mounted in the oil suction cylinder, a reciprocating mechanism is installed between the oil suction cylinder and the driving roller, an oil return pipe is provided between the oil suction cylinder and the return oil end of the hydraulic pump body, and a control valve is provided on the oil return pipe, and a replenishing 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 driving roller, and the transmission roller is rotatably connected to the oil suction cylinder, a reciprocating screw is fixedly mounted on the transmission roller, and the reciprocating screw is located in the oil suction cylinder, a ball nut plate is mounted on the reciprocating screw, and two driven frames are fixedly mounted between the ball nut plate and the oil suction plate.

[0018] Preferably, the purification component includes a cleaning box fixedly mounted on the mounting frame, a linkage roller is rotatably mounted on the support frame 2, and the linkage roller is rotatably connected to the cleaning box, a transmission belt is sleeved between the linkage roller and the driving roller, a linkage wheel is fixedly mounted on the linkage roller, a plurality of stirring blades for stirring the hydraulic oil are fixedly mounted on the linkage wheel, and each stirring blade is provided with an electromagnetic adsorption plate for adsorbing wear impurities in the hydraulic oil, and a filtering mechanism is provided in the cleaning box.

[0019] Preferably, the filtering mechanism includes an oil guide pipe fixedly connected between the oil storage tank and the cleaning box, and a filter plate for filtering wear impurities is fixedly connected to the oil guide pipe. A connecting pipe is fixedly connected between the cleaning box 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 above-mentioned hydraulic pump body wear degree detection device, comprises the following steps:

[0021] S1. When testing the hydraulic pump body, first place it on support frame 1 and connect the oil drain pipe on the oil storage tank to the oil drain port;

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

[0023] S3. Detecting the amount of hydraulic oil collected by a detection mechanism in the oil measuring unit, and determining the amount of hydraulic oil loss based on the collected amount;

[0024] S4. The hydraulic oil is transferred from the oil storage tank to the purification component and the transfer component through the drive component in the cleaning unit;

[0025] S5. The drive assembly drives the oil suction plate to move back and forth to achieve reciprocating communication and conduction of the hydraulic oil. During the conduction process, it cooperates 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 determined by the content of friction impurities.

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

[0027] The present 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 inspecting the hydraulic pump body, this wear detection device can quickly drain the hydraulic oil in the hydraulic pump body through the cooperation of the oil drain pipe and the detection valve, and at the same time, perform real-time detection of the hydraulic oil leakage pressure. The loss of hydraulic oil in the hydraulic pump body can be detected by the size of the leakage pressure, and then the internal wear degree of the hydraulic pump body can be determined.

[0029] 2. When inspecting the hydraulic pump body, this wear detection device can achieve thorough conduction and collection of the hydraulic oil in the hydraulic pump body through the cooperation of the oil storage tank, displacement plate and monitoring scale. The content of the collected hydraulic oil can be determined through the monitoring scale, and the loss of hydraulic oil can be intuitively determined by the content of the hydraulic oil, thereby realizing direct detection of the degree of wear inside the hydraulic pump.

[0030] 3. When inspecting the hydraulic pump body, the wear detection device can realize the reciprocating movement of the oil suction plate in the oil suction cylinder through the cooperation of the conduction component and the drive component, thereby realizing the reciprocating flow of the hydraulic oil between the oil suction cylinder and the cleaning box. The filter plate and the filter box can be used to remove the wear impurities in the hydraulic oil during the flow process.

[0031] 4. When inspecting the hydraulic pump body, the wear detection device can directly filter out 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 position and wear condition inside the hydraulic pump body can be judged by the type and content of wear impurities and iron-containing impurities, and the detection efficiency is higher.

[0032] In summary, the present invention adopts a detection method that combines pressure relief pressure detection, oil remaining amount detection with waste type and content detection, which can quickly detect the degree of wear inside the hydraulic pump body, and can detect the worn parts inside the hydraulic pump body and the degree of wear of the corresponding parts, and can detect the loss of hydraulic oil during wear, with higher detection efficiency and more accurate detection results.

[0033] Other features and advantages of the present invention will be described in the following description, and part of them will become obvious from the description, or will be understood by practicing the present invention. The purpose and other advantages of the present invention can be realized and obtained by the structures particularly pointed out in the written description and the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[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 structural diagram of a device for detecting wear of a hydraulic pump body proposed by the present invention;

[0036] Figure 2 for Figure 1 Schematic diagram of the structure after rotating a certain angle;

[0037] Figure 3 for Figure 2 Schematic diagram of the structure on the detection platform;

[0038] Figure 4 for Figure 3 Schematic diagram of the structure after rotating a certain angle;

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

[0040] Figure 6 for Figure 5 Schematic diagram of the structure of the intermediate oil storage tank and oil discharge pipe;

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

[0042] Figure 8 for Figure 5 Schematic diagram of the structure of the servo motor and 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 structure of the servo motor and cleaning box;

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

[0046] Figure 12 for Figure 11 Schematic diagram of the structure 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 Schematic diagram of the enlarged structure of part A in the middle.

[0049] In the figure: 1 detection box, 2 detection platform, 3 control box, 4 control platform, 5 support frame 1, 6 support frame 2, 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 return 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 nut disc, 35 support arc plate, 36 connecting rod. DETAILED DESCRIPTION

[0050] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0051] Example 1: Reference Figure 1-Figure 4 A device for detecting the degree of wear of a hydraulic pump body includes a hydraulic pump body 7 to be detected placed on a detection platform 2, and an oil drain end 14 and an oil return end 15 are provided on the hydraulic pump body 7. 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 into the hydraulic pump body 7.

[0052] The detection device also includes:

[0053] The oil measuring unit is provided on the detection platform 2 and is used to realize the extraction and collection of hydraulic oil, and to detect the oil leakage pressure during the extraction process. At the same time, the amount of hydraulic oil collected is used to detect the loss of hydraulic oil, and then to judge the degree of wear inside the hydraulic pump body 7;

[0054] The cleaning unit is arranged on the detection platform 2, and is used to realize the reciprocating conduction flow of the hydraulic oil, and to realize the adsorption and filtration removal of impurities and waste materials during the hydraulic oil conduction process, and to detect the wear parts and corresponding wear conditions inside the hydraulic pump body 7 through the type and content of the filtered impurities.

[0055] In a further embodiment, the detection device further comprises a detection box 1, and a detection platform 2 is provided on the upper portion of the detection box 1, and a control box 3 is provided on the detection platform 2;

[0056] A control platform 4 is provided on the control box 3. The control platform 4 is used to control the operation and opening and closing status of the oil measuring unit and the cleaning unit, realize automatic wear detection of the hydraulic pump body 7, and improve the efficiency and accuracy of wear detection.

[0057] Example 2: Reference Figure 4-Figure 7The technical solution of this embodiment is different from that of the first embodiment in that the oil measuring unit includes an oil storage tank 10 and a support frame 5 for positioning the hydraulic pump body 7. The support frame 5 is fixedly mounted on the detection platform 2. A clamping member is provided on the support frame 5, and the hydraulic pump body 7 is clamped and placed on the clamping member. The oil storage tank 10 is fixedly mounted on the support frame 5 via a connecting frame.

[0058] Before testing, first place the hydraulic pump body 7 to be tested on the engaging piece on the support frame 1 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 port 14, and a detection valve 13 for detecting the oil drain pressure is provided on the oil drain pipe 9. The oil drain pipe 9 on the oil storage tank 10 is then inserted into the oil drain port 14 on the hydraulic pump body 7 and sealed and fixed.

[0060] Restart the hydraulic pump main body 7 to make it run normally, and open the oil drain pipe 9 after running for a period of time, so that the hydraulic oil in the hydraulic pump main body 7 is automatically discharged through the oil drain end 14 and flows into the oil storage tank 10 through the oil drain pipe 9. The hydraulic oil in the hydraulic pump main body 7 can be collected through the oil storage tank 10. When the hydraulic oil flows in the oil drain pipe 9, the detection valve 13 is started to detect the oil drain pressure, and the detected oil drain pressure is compared with the standard oil drain pressure of the hydraulic pump main body 7. If the pressure results are inconsistent, it is detected that the internal wear of the hydraulic pump main body 7 is detected.

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

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

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

[0064] After the hydraulic oil in the oil storage tank 10 is collected, the position scale of the displacement plate 20 at this time can be recorded by the monitoring scale 18, and the collected amount of hydraulic oil can be determined by the difference between the front and rear position scales, which can be compared with the standard oil storage capacity of the hydraulic pump body 7 of this model, so as to quickly detect and determine whether there is wear and leakage inside the hydraulic pump body 7, and the loss of hydraulic oil can be determined based on the amount of collected oil, so as to facilitate the subsequent replenishment of hydraulic oil.

[0065] Example 3: Reference Figure 4-Figure 5 as well as Figures 8-14 The technical solution of this embodiment is different from that of the second embodiment in that the oil measuring unit includes a driving component, a conducting component and a purification component. The conducting 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 in the hydraulic oil.

[0066] The driving assembly and the conducting assembly cooperate 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 conducting assembly, and cooperate with the filter plate 26 and the filter box 27 to remove the wear impurities in the hydraulic oil during the flow process.

[0067] The driving assembly includes a support frame 6 fixedly mounted on the detection platform 2, and a servo motor 8 is provided on the support frame 6, a driving roller 17 is provided on the driving end of the servo motor 8, a mounting frame 16 is fixedly mounted on the support frame 6, and two supporting arc plates 35 are fixedly mounted on the mounting frame 16. When the servo motor 8 is started, it will drive the driving 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 is slidably mounted in 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 in the oil suction cylinder 11. A ball nut plate 34 is co-mounted on the reciprocating screw 32, and two driven frames 33 are fixedly mounted between the ball nut plate 34 and the oil suction plate 31.

[0069] When the driving 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 plate 34 matched thereon to move. When the reciprocating screw 32 rotates, the ball nut plate 34 will reciprocate on it, thereby driving the driven frame 33 and the oil suction plate 31 to move, thereby driving the oil suction plate 31 to reciprocate in the oil suction cylinder 11.

[0070] The cooperation between the reciprocating screw 32 and the ball nut plate 34 is an existing technology. The specific principle is: the reciprocating screw 32 is a form of a three-dimensional cam pair, which is manifested as two thread grooves with the same pitch and opposite rotation directions. The two ends of the screw are connected by a transition curve. Through the rotation of the screw, the side of the spiral groove pushes the ball placed in the spiral groove of the ball nut plate 34 to make axial reciprocating motion, thereby driving the ball nut plate 34 to move back and forth, that is, when the reciprocating screw 32 rotates unidirectionally, it can drive the ball nut plate 34 to make reciprocating linear movement on the reciprocating screw 32.

[0071] In a further embodiment, the purification assembly includes a cleaning box 22 fixedly mounted on the mounting frame 16, and a filtering mechanism is provided in the cleaning box 22. The filtering 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 wear impurities is fixedly connected to the oil guide pipe 19;

[0072] After the content of the hydraulic oil stored in the oil storage tank 10 is detected, the oil guide pipe 19 can be opened to guide the hydraulic oil in the oil storage tank 10 into the cleaning box 22 to complete the conduction of the hydraulic oil;

[0073] When the 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 disc 26, and then flow into the cleaning box 22 through the connecting holes on the filter disc 26. When the hydraulic oil passes through the filter disc 26, the wear waste carried by the hydraulic oil will be blocked by the filter disc 26, thereby completing the preliminary filtration of the 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 generates suction in the oil suction cylinder 11, which generates 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 in the oil suction cylinder 11, the hydraulic oil sucked in the oil suction cylinder 11 will be pushed back into the cleaning box 22 through the connecting pipe 23 and the filter box 27. During the reciprocating movement, the hydraulic oil and the filter box 27 will be in reciprocating contact, and 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 driving roller 17. A linkage wheel 28 is fixedly mounted on the linkage roller 24, and a plurality of stirring blades 29 for stirring the hydraulic oil are fixedly mounted on the linkage wheel 28.

[0077] The servo motor 8 drives the driving roller 17 to rotate to absorb and push out the hydraulic oil. At the same time, the rotation of the driving roller 17 will drive the linkage roller 24 to rotate with the cooperation 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 thereon to rotate in the cleaning box 22, so as to stir the hydraulic oil in the cleaning box 22, so that the hydraulic oil and the wear impurities therein are more thoroughly dispersed, thereby accelerating the removal efficiency of the wear impurities in the hydraulic oil.

[0078] Each stirring blade 29 is provided 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 thereon is activated. The electromagnetic adsorption plate 30 can rotate with the rotation of the stirring blade 29, so that it can fully contact the hydraulic oil in the cleaning box 22, and at the same time start to adsorb the iron-containing impurities in the hydraulic oil, thereby further cleaning the impurities in the hydraulic oil.

[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 replenishing pipe for replenishing hydraulic oil is fixedly connected to the oil return pipe 12;

[0080] After the impurities in the hydraulic oil are cleaned, all the hydraulic oil in the cleaning box 22 can be sucked into the oil suction cylinder 11 through the oil suction pan 31, and then the cleaning box 22 is opened to collect the ordinary impurities and iron-containing impurities therein. After the collection is completed, the type and content of the impurities are classified and judged. The worn parts inside the hydraulic pump body 7 can be judged by the type of impurities, and the degree of wear of the worn parts can be judged by the number of impurities of this type. Therefore, the accurate and rapid detection of the degree of wear inside the hydraulic pump body 7 can be achieved 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 synchronously, and the servo motor 8 is started again to drive the oil suction plate 31 to move. At this time, when the oil suction plate 31 moves, the hydraulic oil in the oil suction cylinder 11 will be pushed back to the hydraulic pump body 7 through the return oil pipe 12 and the return oil end 15. In the process of returning oil, the hydraulic oil missing in the hydraulic pump body 7 is additionally supplemented through the replenishing pipe, so that the hydraulic oil in the hydraulic pump body 7 is fully filled, the oil replenishment of the hydraulic pump body 7 is completed, and its operating stability is improved.

[0082] The detection principle of this detection device is as follows: before the test, the hydraulic pump body 7 to be tested is first placed on the clamping piece on the support frame 1 5 to complete the positioning of the hydraulic pump body 7, and then the oil discharge pipe 9 on the oil storage tank 10 is inserted into the oil drain port 14 on the hydraulic pump body 7 and sealed and fixed;

[0083] Start the hydraulic pump body 7 to make it run normally, and after running for a period of time, open the oil drain pipe 9, so that the hydraulic oil in the hydraulic pump body 7 is automatically discharged through the oil drain port 14 and flows into the oil storage tank 10 through the oil 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 oil drain pipe 9, start the detection valve 13 to detect the oil drain pressure, and compare the detected oil drain pressure with the standard oil drain pressure of the hydraulic pump body 7. If the pressure results are inconsistent, it means that wear is detected inside the hydraulic pump body 7;

[0084] After the hydraulic oil enters the oil storage tank 10 through the oil 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. After the hydraulic oil in the oil storage tank 10 is collected, the position scale of the displacement plate 20 at this time is recorded by the monitoring scale 18. The collected amount of hydraulic oil is judged by the difference between the front and rear position scales, and compared with the standard oil storage capacity of the hydraulic pump body 7 of this model, so as to quickly detect and judge whether there is wear and leakage inside the hydraulic pump body 7, and judge the loss of hydraulic oil based on the amount of collected oil.

[0085] After the content of the hydraulic oil stored in the oil storage tank 10 is detected, the oil guide pipe 19 is opened to guide the hydraulic oil in the oil storage tank 10 into the cleaning box 22. The hydraulic oil in the oil guide pipe 19 first enters the filter disc 26, and then flows into the cleaning box 22 through the connecting holes on the filter disc 26. When the hydraulic oil passes through the filter disc 26, the wear and waste impurities carried by the hydraulic oil will be blocked by the filter disc 26, completing the preliminary filtration of the wear and waste impurities in the hydraulic oil.

[0086] Then, the servo motor 8 is started to rotate the driving roller 17 and the reciprocating screw 32. When the reciprocating screw 32 rotates, it drives the oil suction plate 31 to reciprocate in the oil suction cylinder 11 in cooperation with the ball nut plate 34. When the oil suction plate 31 moves forward in the oil suction cylinder 11, it generates an 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.

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

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

[0089] After the impurities in the hydraulic oil are cleaned, all the hydraulic oil in the cleaning box 22 is sucked into the oil suction cylinder 11 through the oil suction pan 31, and then the cleaning box 22 is opened to collect the common impurities and iron-containing impurities therein. After the collection is completed, the type and content of the impurities are classified and judged. The worn parts inside the hydraulic pump main body 7 can be judged by the type of impurities, and the degree of wear of the worn parts can be judged by the number of impurities of this type. Therefore, the accurate and rapid detection of the degree of wear inside the hydraulic pump main body 7 can be achieved without disassembling the hydraulic pump main body 7.

[0090] An embodiment of the present invention further provides a method for detecting the wear degree of a hydraulic pump body, which is used in the above-mentioned device for detecting the wear degree of a hydraulic pump body, and includes 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 storage tank 10 to the oil drain port 14;

[0092] S2. Start the hydraulic pump body 7 to make it run normally, and simultaneously open the oil 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 oil drain pipe 9. During the oil conduction process, the oil drain pressure is tested through the detection valve 13;

[0093] S3. Detecting the amount of hydraulic oil collected by a detection mechanism in the oil measuring unit, and determining the amount of hydraulic oil loss based on the collected amount;

[0094] S4, the hydraulic oil is transferred from the oil storage tank 10 to the purification component and the transfer component through the driving component in the cleaning unit;

[0095] S5. The drive assembly drives the oil suction plate 31 to move back and forth to achieve reciprocating communication and conduction of the hydraulic oil. During the conduction process, the filter plate 26 and the filter box 27 are used to filter and adsorb wear impurities in the hydraulic oil. The internal wear degree of the hydraulic pump body 7 is determined 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 oil return port 15 by the conduction component, and the lost hydraulic oil is replenished.

[0097] The above description is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with the technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solution and inventive concept of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. A device for detecting the wear degree of a hydraulic pump body, comprising a hydraulic pump body (7) to be detected placed on a detection platform (2), and an oil drain port (14) and an oil return port (15) provided on the hydraulic pump body (7), characterized in that: Also includes: An oil measuring unit is provided on the detection platform (2), comprising an oil storage tank (10) and a support frame (5) for positioning a hydraulic pump body (7), wherein a detection mechanism for detecting loss of hydraulic oil in the hydraulic pump body (7) is provided in the oil storage tank (10), an oil drain pipe (9) is provided between the oil storage tank (10) and an oil drain end (14), and a detection valve (13) for detecting oil drain pressure is provided on the oil drain pipe (9); A cleaning unit is provided on the detection platform (2), comprising a driving component, a conducting component and a purification component, wherein the conducting component is provided with an oil suction disc (31) for driving the flow of hydraulic oil, and the purification component is provided with a filter disc (26) and a filter box (27) for removing wear impurities inside the hydraulic oil; The driving assembly and the conducting assembly cooperate to drive the oil suction plate (31) to move, thereby realizing the flow of hydraulic oil between the oil storage tank (10) and the purification assembly and the conducting assembly, and cooperate with the filter plate (26) and the filter box (27) to remove wear impurities in the hydraulic oil during the flow process.

2. The hydraulic pump body wear detection device according to claim 1, characterized in that: The detection device further comprises a detection box (1), and a detection platform (2) is arranged on the upper part of the detection box (1), and a control box (3) is arranged on the detection platform (2); A control platform (4) is provided on the control box (3). The control platform (4) is used to control the operation and opening and closing states of the oil measuring unit and the cleaning unit, thereby realizing automatic wear detection of the hydraulic pump body (7).

3. The hydraulic pump body wear detection device according to claim 1, characterized in that: The support frame 1 (5) is fixedly mounted on the detection platform (2); a clamping piece is provided on the support frame 1 (5), and the hydraulic pump body (7) is clamped and placed on the clamping piece; an oil storage tank (10) is fixedly mounted on the support frame 1 (5) via a connecting frame.

4. The hydraulic pump body wear detection device according to claim 3, characterized in that: The detection mechanism comprises a displacement plate (20) slidably mounted in an oil storage tank (10), and a return spring (21) is fixedly mounted between the displacement plate (20) and the inner wall of the oil storage tank (10). A monitoring scale (18) is provided on the oil storage tank (10), and the monitoring scale (18) is used to monitor the real-time position of the displacement plate (20) in the oil storage tank (10), thereby determining the amount of hydraulic oil collected in the oil storage tank (10).

5. The hydraulic pump body wear detection device according to claim 4, characterized in that: The driving assembly comprises a second support frame (6) fixedly mounted on the detection platform (2), a servo motor (8) being provided on the second support frame (6), a driving roller (17) being provided on the driving end of the servo motor (8), a mounting frame (16) being fixedly mounted on the second support frame (6), and two supporting arc plates (35) being fixedly mounted on the mounting frame (16).

6. The hydraulic pump body wear detection device according to claim 5, characterized in that: The transmission component includes an oil suction cylinder (11) fixedly mounted on two supporting arc plates (35), and an oil suction plate (31) is slidably mounted in the oil suction cylinder (11), a reciprocating mechanism is installed between the oil suction cylinder (11) and the driving roller (17), 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), and a supplementary pipe for supplementing hydraulic oil is fixedly connected to the oil return pipe (12).

7. The hydraulic pump body wear detection device according to claim 6, characterized in that: The reciprocating mechanism includes a transmission roller fixedly mounted on a driving roller (17), and the transmission roller is rotatably connected to the oil suction cylinder (11); a reciprocating screw rod (32) is fixedly mounted on the transmission roller, and the reciprocating screw rod (32) is located in the oil suction cylinder (11); a ball nut plate (34) is matched with the reciprocating screw rod (32), and two driven frames (33) are fixedly mounted between the ball nut plate (34) and the oil suction cylinder (31).

8. The hydraulic pump body wear detection device according to claim 6, characterized in that: The purification component comprises a cleaning box (22) fixedly mounted on a mounting frame (16); a linkage roller (24) is rotatably mounted on the second support frame (6); 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 driving roller (17); a linkage wheel (28) is fixedly mounted on the linkage roller (24); a plurality of stirring blades (29) for stirring hydraulic oil are fixedly mounted on the linkage wheel (28); and each stirring blade (29) is provided with an electromagnetic adsorption plate (30) for adsorbing wear impurities in the hydraulic oil; and a filtering mechanism is provided in the cleaning box (22).

9. The hydraulic pump body wear detection device according to claim 8, characterized in that: The filtering mechanism comprises 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 wear impurities is fixedly connected to the oil guide pipe (19); 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).

10. A method for detecting the wear degree of a hydraulic pump body, used in a device for detecting the wear degree of a hydraulic pump body according to any one of claims 1 to 9, characterized in that: The following steps are involved: 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 storage tank (10) to the oil drain end (14); S2, starting the hydraulic pump body (7) to make it run normally, and simultaneously opening the oil drain pipe (9), so that the hydraulic oil in the hydraulic pump body (7) is introduced into the oil storage tank (10) through the oil drain pipe (9), and the oil drain pressure is detected through the detection valve (13) during the conduction process; S3. Detecting the amount of hydraulic oil collected by a detection mechanism in the oil measuring unit, and determining the amount of hydraulic oil loss based on the collected amount; S4, transferring the hydraulic oil from the oil storage tank (10) to the purification component and the transfer component through the driving component in the cleaning unit; S5, the driving assembly drives the oil suction plate (31) to move back and forth to realize the reciprocating communication and conduction of the hydraulic oil, and cooperates with the filter plate (26) and the filter box (27) during the conduction process to realize the filtration and adsorption of wear impurities in the hydraulic oil, and judges the internal wear degree of the hydraulic pump body (7) by the content of friction impurities; S6. After the inspection and cleaning are completed, the hydraulic oil is returned to the hydraulic pump body (7) through the oil return end (15) through the transmission component, and the lost hydraulic oil is replenished.

Images