Durability test bench for gear pump detection

Abstract

The invention relates to the technical field of gear pump detection, in particular to a durability test bed for gear pump detection, which comprises a base, an oil storage tank, a detection table, a transmission box, a support frame, a linkage box, a telescopic side plate, a connecting plug, an oil return pipe, a flow meter, an oil pumping pipe, an adjusting box, a control panel, a clamping mechanism, a crimping mechanism and an adjusting mechanism. According to the invention, gear pumps are clamped and fixed through the clamping mechanism, so that the gear pumps of different specifications can be quickly fixed on the detection table by part of devices, the gear pumps are effectively prevented from generating large-amplitude vibration, and the pipelines are elastically crimped through the crimping mechanism; part of the device can automatically butt a pipeline to an inlet and an outlet of the gear pump, lifting adjustment of the connecting plug is achieved through the adjusting mechanism, the part of the device can adjust the height of the connecting plug according to the specification of the gear pump, and the part of the device can be conveniently and accurately butt-jointed with the inlet and the outlet of the gear pump; and the stability, convenience and adjustability of the device are improved.

Description

Technical Field

[0001] This invention relates to the field of gear pump testing technology, specifically to a durability performance testing bench for gear pump testing. Background Technology

[0002] A gear pump is a rotary pump that transports or pressurizes liquids by relying on the change and movement of the working volume formed between the pump cylinder and meshing gears. A gear pump consists of two gears, a pump body, and front and rear covers forming two enclosed spaces. When the gears rotate, the volume of the space on the disengaged side increases, creating a vacuum that draws in liquid. Conversely, the volume of the space on the meshing side decreases, forcing the liquid into the pipeline. After production, gear pumps typically undergo random sampling inspection. Durability tests are conducted to evaluate the quality of each batch of gear pumps.

[0003] Existing devices primarily test the durability of gear pumps through overload tests. These devices are largely similar to a durability performance test bench for gear pumps used in aircraft engines. The structure of patent CN113916578A includes a heating mechanism for providing a constant temperature for oil supply, an alarm for audible and visual alerts, and a timer for recording the durability performance test time. It also includes a mounting base plate, with a pump body fixedly mounted on the right side of the upper surface of the base plate. A gear is rotatably connected to the inner wall of the pump body, and a drive motor is fixedly mounted on the upper surface of the base plate. This invention allows for direct observation and recording of the ratio of the gear pump's output power to its input power, enabling analysis of the wear degree of internal parts. By combining this with the test time displayed on the timer, the durability performance of the gear pump at different time periods can be analyzed, facilitating statistical analysis. However, this device still has areas for improvement.

[0004] Existing devices primarily use bolts and other components to fix the gear pump near the testing platform. This makes it difficult for some devices to quickly fix gear pumps of different specifications onto the testing platform, resulting in some gear pumps vibrating significantly during operation and testing. Secondly, some devices rely on manual connection of inlet and outlet oil pipes, making it difficult to automatically connect the pipes to the inlet and outlet of the gear pump, thus wasting a lot of assembly time. Finally, some devices cannot adjust the height of the connector according to the specifications of the gear pump, making it difficult to accurately connect the inlet and outlet of the gear pump, reducing the working efficiency and practicality of the device. Therefore, to solve the above problems, a durability performance testing platform for gear pump testing is proposed. Summary of the Invention

[0005] The purpose of this invention is to provide a durability testing bench for gear pump testing, which solves the problems mentioned in the background art. Existing devices mainly use bolts and other components to fix the gear pump near the testing bench, making it difficult to quickly fix gear pumps of different specifications onto the testing bench. This results in some gear pumps vibrating significantly during operation and testing. Secondly, some devices mainly rely on manual connection of inlet and outlet oil pipes, making it difficult to automatically connect the pipes to the inlet and outlet of the gear pump, thus wasting a lot of assembly time. Finally, some devices cannot adjust the height of the connector according to the specifications of the gear pump, making it difficult to accurately connect the inlet and outlet of the gear pump.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a durability performance testing bench for gear pump testing, comprising a base, an oil storage tank fixedly connected to the top center of the base, a testing platform fixedly connected to the top of the base, a transmission box fixedly connected to the bottom center of the testing platform, a support frame fixedly connected to the top of the testing platform, a linkage box fixedly connected to the top of the support frame, telescopic side plates slidably connected to the top two sides of the inner wall of the support frame, a connector inserted inside the lower part of the telescopic side plate, a return oil pipe fixedly connected to the right side of the right connector, a flow meter fixedly connected to the other end of the return oil pipe, a flow meter fixedly connected to the left side of the left connector above the right side of the oil storage tank, an oil suction pipe fixedly connected to the left side of the left connector, the other end of the oil suction pipe fixedly connected to the lower left side of the oil storage tank, an adjustment box fixedly connected to the top center of the inner wall of the support frame, and a control panel fixedly connected to the top right side of the testing platform; The transmission box is equipped with a clamping mechanism, which includes a first motor. The left side of the first motor is fixedly connected to the middle right side of the transmission box. The linkage box is equipped with a pressing mechanism, which includes a transmission worm. The front end of the transmission worm is movably connected to the front side of the inner wall of the linkage box, and the rear end of the transmission worm passes through the rear side wall of the linkage box. The adjustment box is equipped with an adjustment mechanism, which includes a second motor. The top of the second motor is fixedly connected to the middle bottom of the adjustment box.

[0007] Preferably, a drive shaft is fixedly connected to the middle left side of the first motor. The left end of the drive shaft passes through the transmission box and is fixedly connected to a first bevel gear. A second bevel gear is meshed with the left side of the first bevel gear. A first symmetrical screw is fixedly connected to the inner wall of the second bevel gear. The front end of the first symmetrical screw is movably connected to the inner wall of the transmission box.

[0008] Preferably, the outer walls of the first symmetrical screw are threaded with clamping sleeves on both sides, and a sliding table is fixedly connected to the outer wall of the clamping sleeve through the detection table. A folding clamp is fixedly connected to the top center of the sliding table.

[0009] Preferably, the outer walls of the sliding stage are fixedly connected to the two sides of the limiting sleeves, and the inner walls of the limiting sleeves are provided with limiting rods, the two ends of which are fixedly connected to the inner walls of the detection stage.

[0010] Preferably, the rear end of the first symmetrical screw passes through the transmission box and is fixedly connected to a drive wheel. A linkage belt is engaged with the lower outer wall of the drive wheel, and a driven wheel is engaged with the inner wall of the linkage belt. The rear end of a transmission worm is fixedly connected to the middle front side of the driven wheel.

[0011] Preferably, a transmission worm wheel is meshed with the front side of the outer wall of the transmission worm, and a second symmetrical screw is fixedly connected to the inner wall of the transmission worm wheel. The two ends of the second symmetrical screw are movably connected to the inner wall of the linkage box. A crimping sleeve is threaded to both sides of the outer wall of the second symmetrical screw. The lower part of the outer wall of the crimping sleeve passes through the top plate of the support frame and is fixedly connected to the top of the telescopic side plate.

[0012] Preferably, a fixing ring plate is fixedly connected to the inner side of the outer wall of the connector, a telescopic rod is fixedly connected to the outer side of the fixing ring plate, the other end of the telescopic rod is fixedly connected to the lower inner side of the telescopic side plate, and a spring is fixedly connected to the outer side of the fixing ring plate located on the outer ring of the telescopic rod, and the outer end of the spring is fixedly connected to the inner side of the telescopic side plate.

[0013] Preferably, a movable shaft is fixedly connected to the top center of the second motor, and the top end of the movable shaft passes through the adjustment box and is fixedly connected to a third bevel gear.

[0014] Preferably, a fourth bevel gear is meshed above the third bevel gear, a movable worm is fixedly connected to the inner wall of the fourth bevel gear, the two ends of the movable worm are movably connected to the inner wall of the regulating box, and movable worm wheels are meshed on both sides of the outer wall of the movable worm.

[0015] Preferably, a movable screw is fixedly connected to the inner wall of the movable worm gear, the top end of the movable screw is movably connected to the top of the inner wall of the support frame, the bottom end of the movable screw passes through the bottom of the adjustment box and is fitted with a lifting screw cylinder, the bottom end of the lifting screw cylinder is fixedly connected to a symmetrical telescopic plate, and the two ends of the symmetrical telescopic plate are fixedly connected to the inner middle of the telescopic side plate.

[0016] Compared with the prior art, the beneficial effects of the present invention are: 1. This invention utilizes a clamping mechanism comprising a first motor, a transmission shaft, a first bevel gear, a second bevel gear, a first symmetrical screw, a clamping sleeve, a sliding table, a folding clamp, a limiting sleeve, and a limiting rod. The first motor is activated via a control panel to rotate forward. The first motor drives the transmission shaft and the first bevel gear to rotate in a limiting position. The first bevel gear meshes and drives the second bevel gear and the first symmetrical screw to rotate in a limiting position. The first symmetrical screw drives the clamping sleeve, the sliding table, and the folding clamp to slide symmetrically closer together, thus achieving the clamping and fixing of the gear pump. This allows some devices to quickly fix gear pumps of different specifications onto the testing platform, effectively preventing significant vibrations during gear pump operation and testing, and improving the stability and practicality of the device.

[0017] 2. This invention utilizes a pressing mechanism comprising a driving wheel, a linkage belt, a driven wheel, a transmission worm, a transmission worm wheel, a second symmetrical screw, a pressing sleeve, a fixed ring plate, a telescopic rod, and a spring. The first symmetrical screw drives the transmission worm to rotate synchronously and at a limited position via the driving wheel, linkage belt, and driven wheel. The transmission worm meshes with and drives the transmission worm wheel and the second symmetrical screw to rotate at a limited position. The second symmetrical screw drives the pressing sleeve, the telescopic side plate, and the connector to slide symmetrically closer together. The telescopic side plate, through the spring and the fixed ring plate, drives the connector to elastically press against the inlet and outlet of the gear pump, achieving elastic pressing of the pipeline. This allows some parts of the device to automatically connect the pipeline to the inlet and outlet of the gear pump, saving a significant amount of assembly time and improving the convenience and interoperability of the device.

[0018] 3. This invention, through the adjustment mechanism including a second motor, a movable shaft, a third bevel gear, a fourth bevel gear, a movable worm, a movable worm wheel, a movable screw, a lifting screw barrel, and a symmetrical telescopic plate, allows for adjustment of the connector. First, the second motor is activated via the control panel, driving the movable shaft and the third bevel gear to rotate in a limited position. The third bevel gear meshes, driving the fourth bevel gear and the movable worm to rotate in a limited position. The movable worm meshes, driving the movable worm wheel and the movable screw to rotate in a limited position. The movable screw drives the lifting screw barrel and the symmetrical telescopic plate to slide up and down, allowing the symmetrical telescopic plate to synchronously slide the connector via the telescopic side plate. This achieves the lifting and lowering adjustment of the connector, enabling some devices to adjust the connector height according to the gear pump specifications, facilitating accurate connection of some devices to the gear pump inlet and outlet, and improving the adjustability and practicality of the device. Attached Figure Description

[0019] Figure 1 This is a front side perspective view of the structure of the present invention; Figure 2 This is a frontal cross-sectional perspective view of the structure of the present invention; Figure 3 This is a bottom-view sectional perspective view of a portion of the transmission box and clamping mechanism of the present invention; Figure 4This is a top sectional perspective view of a partial structure of the testing station and pressing mechanism of the present invention; Figure 5 This is a partial side sectional perspective view of the support frame and pressing mechanism of the present invention; Figure 6 This is a front sectional perspective view of a partial structure of the linkage box and the pressing mechanism of the present invention; Figure 7 This is a frontal sectional perspective view of a partial structure of the connector and crimping mechanism of the present invention; Figure 8 This is a frontal cross-sectional perspective view of a partial structure of the regulating box and regulating mechanism of the present invention.

[0020] In the diagram: 101. Base; 102. Oil reservoir; 103. Testing platform; 104. Transmission box; 105. Support frame; 106. Linkage box; 107. Telescopic side plate; 108. Connector; 109. Return oil pipe; 110. Flow meter; 111. Suction pipe; 112. Adjustment box; 113. Control panel; 2. Clamping mechanism; 201. First motor; 202. Transmission shaft; 203. First bevel gear; 204. Second bevel gear; 205. First symmetrical screw; 206. Clamping sleeve; 207. Sliding table; 208. Angle clamp; 209. Limiting device. 1. Sliding sleeve; 2. Limiting rod; 3. Pressing mechanism; 301. Driving wheel; 302. Linkage belt; 303. Driven wheel; 304. Transmission worm; 305. Transmission worm wheel; 306. Second symmetrical screw; 307. Pressing screw sleeve; 308. Fixed ring plate; 309. Telescopic rod; 310. Spring; 4. Adjusting mechanism; 401. Second motor; 402. Movable shaft; 403. Third bevel gear; 404. Fourth bevel gear; 405. Movable worm; 406. Movable worm wheel; 407. Movable screw; 408. Lifting screw cylinder; 409. Symmetrical telescopic plate. Detailed Implementation

[0021] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0022] Please see Figure 1-8 One embodiment provided by the present invention: A durability testing bench for gear pump testing includes a base 101, an oil reservoir 102 fixedly connected to the top center of the base 101, a testing platform 103 fixedly connected to the top of the base 101, a transmission box 104 fixedly connected to the bottom center of the testing platform 103, a support frame 105 fixedly connected to the top of the testing platform 103, a linkage box 106 fixedly connected to the top of the support frame 105, telescopic side plates 107 slidably connected to the top two sides of the inner wall of the support frame 105, and a plug-in connector inserted into the lower part of the telescopic side plates 107. The head 108 has a return oil pipe 109 fixedly connected to the right side of the right-side connector 108. The other end of the return oil pipe 109 is fixedly connected to a flow meter 110. The left side of the flow meter 110 is fixedly connected to the upper right side of the oil storage tank 102. The left side of the left-side connector 108 has an oil extraction pipe 111 fixedly connected to the left side of the oil storage tank 102. The other end of the oil extraction pipe 111 is fixedly connected to the lower left side of the oil storage tank 102. The top middle of the inner wall of the support frame 105 is fixedly connected to an adjustment box 112. The top right side of the detection table 103 is fixedly connected to a control panel 113. The transmission box 104 is equipped with a clamping mechanism 2, which includes a first motor 201. The left side of the first motor 201 is fixedly connected to the middle right side of the transmission box 104. A transmission shaft 202 is fixedly connected to the middle left side of the first motor 201. The left end of the transmission shaft 202 passes through the transmission box 104 and is fixedly connected to a first bevel gear 203. A second bevel gear 204 is meshed with the left side of the first bevel gear 203. A first symmetrical screw 205 is fixedly connected to the inner wall of the second bevel gear 204. The front end of the first symmetrical screw 205 is movably connected to the inner wall of the transmission box 104. Through this design, the first motor 201 drives the transmission shaft 202 and the first bevel gear 203 to rotate in a limited position, so that the first bevel gear 203 meshes and drives the second bevel gear 204 and the first symmetrical screw. The first symmetrical screw 205 is limited to rotation. The outer walls of the first symmetrical screw 205 are threaded with clamping sleeves 206. The outer walls of the clamping sleeves 206 pass through the detection table 103 and are fixedly connected to a sliding table 207. The top center of the sliding table 207 is fixedly connected to a folded clamping plate 208. Through this design, the first symmetrical screw 205 drives the clamping sleeves 206 to slide symmetrically, so that the clamping sleeves 206 drive the sliding table 207 and the folded clamping plate 208 to slide synchronously and clamp the gear pump. The outer walls of the sliding table 207 are fixedly connected with limiting sleeves 209. The inner walls of the limiting sleeves 209 are inserted with limiting rods 210. The two ends of the limiting rods 210 are fixedly connected to the inner walls of the detection table 103. Through this design, the sliding table 207 drives the limiting sleeves 209 to slide within the limiting rods 210.

[0023] The linkage box 106 is equipped with a pressing mechanism 3, which includes a transmission worm gear 304. The front end of the transmission worm gear 304 is movably connected to the front side of the inner wall of the linkage box 106, and the rear end of the transmission worm gear 304 passes through the rear side wall of the linkage box 106. The rear end of the first symmetrical screw 205 passes through the linkage box 104 and is fixedly connected to a drive wheel 301. A linkage belt 302 is meshed with the lower outer wall of the drive wheel 301, and a driven wheel 303 is meshed with the inner wall of the linkage belt 302. The rear end of the transmission worm 304 is fixedly connected to the front middle of the driven wheel 303. This design enables the first symmetrical screw 205 to drive the transmission worm 304 to rotate synchronously via the driving wheel 301, the linkage belt 302, and the driven wheel 303, thus maintaining the linkage between the clamping mechanism 2 and the pressing mechanism 3. A transmission worm wheel 305 is meshed with the front side of the outer wall of the transmission worm 304, and a second symmetrical screw 306 is fixedly connected to the inner wall of the transmission worm wheel 305. The two ends of the second symmetrical screw 306 are movable. The second symmetrical screw 306 is threaded on both sides of its outer wall and connected to the inner wall of the linkage box 106. The outer wall of the crimping sleeve 307 passes through the top plate of the support frame 105 and is fixedly connected to the top of the telescopic side plate 107. This design enables the transmission worm gear 304 to mesh and drive the transmission worm wheel 305 and the second symmetrical screw 306 to rotate in a limited position, allowing the second symmetrical screw 306 to drive the crimping sleeve 307 and the telescopic side plate 107 to slide symmetrically. The connector 10... A fixed ring plate 308 is fixedly connected to the inner side of the outer wall of the 8. A telescopic rod 309 is fixedly connected to the outer side of the fixed ring plate 308. The other end of the telescopic rod 309 is fixedly connected to the lower inner side of the telescopic side plate 107. A spring 310 is fixedly connected to the outer side of the fixed ring plate 308 on the outer ring of the telescopic rod 309. The outer end of the spring 310 is fixedly connected to the inner side of the telescopic side plate 107. Through this design, the telescopic side plate 107 drives the connector 108 to elastically press against the inlet and outlet of the gear pump.

[0024] The regulating box 112 is equipped with an regulating mechanism 4, which includes a second motor 401. The top of the second motor 401 is fixedly connected to the middle of the bottom of the regulating box 112. A movable shaft 402 is fixedly connected to the middle of the top of the second motor 401. The top of the movable shaft 402 passes through the regulating box 112 and is fixedly connected to a third bevel gear 403. This design enables the second motor 401 to drive the movable shaft 402 and the third bevel gear 403 to rotate in a limited position. A fourth bevel gear 404 is meshed above the third bevel gear 403. A movable worm gear 405 is fixedly connected to the inner wall of the fourth bevel gear 404. The two ends of the movable worm gear 405 are movably connected to the inner wall of the regulating box 112. Movable worm wheels 406 are meshed on both sides of the outer wall of the movable worm gear 405. This design enables the third bevel gear 403 to mesh. The fourth bevel gear 404 is driven to rotate, which in turn drives the movable worm gear 405 to rotate in a limited position. The inner wall of the movable worm gear 406 is fixedly connected to the movable screw 407. The top end of the movable screw 407 is movably connected to the top of the inner wall of the support frame 105. The bottom end of the movable screw 407 passes through the bottom of the adjustment box 112 and is fitted with a lifting screw cylinder 408. The bottom end of the lifting screw cylinder 408 is fixedly connected to a symmetrical telescopic plate 409. The two ends of the symmetrical telescopic plate 409 are fixedly connected to the inner middle of the telescopic side plate 107. Through this design, the movable worm gear 405 meshes and drives the movable worm gear 406 and the movable screw 407 to rotate in a limited position, so that the movable screw 407 drives the lifting screw cylinder 408 and the symmetrical telescopic plate 409 to adjust in height, and so that the symmetrical telescopic plate 409 drives the connector 108 to adjust synchronously through the telescopic side plate 107.

[0025] Working principle: When it is necessary to clamp and fix the gear pump, the first motor 201 is started to rotate forward via the control panel 113. The first motor 201 drives the transmission shaft 202 to rotate in a limited position. The transmission shaft 202 meshes and drives the first bevel gear 203 to rotate synchronously. The first bevel gear 203 meshes and drives the second bevel gear 204 to rotate. The second bevel gear 204 drives the first symmetrical screw 205 to rotate in a limited position. The first symmetrical screw 205 drives the clamping sleeve 206 to slide symmetrically closer. The clamping sleeve 206 drives the sliding table 207 and the limiting sliding sleeve 209 to slide synchronously along the limiting rod 210. The sliding table 207 drives the angled clamping plate 208 to slide synchronously, so that the angled clamping plate 208 clamps the outer wall of the gear pump, realizing the clamping and fixing operation of the gear pump.

[0026] When elastic crimping of the pipeline is required, the first motor 201 is started to rotate forward via the control panel 113, causing the first symmetrical screw 205 to drive the drive wheel 301 to rotate synchronously. The drive wheel 301 engages and drives the linkage belt 302 to rotate, which in turn drives the driven wheel 303 to rotate. The driven wheel 303 drives the transmission worm gear 304 to rotate to a limit position, which in turn drives the transmission worm wheel 305 to rotate synchronously. The transmission worm wheel 305 drives the second symmetrical screw 306 to rotate to a limit position, which in turn drives the crimping sleeve 307 to slide symmetrically closer together. The crimping sleeve 307 drives the telescopic side plate 107 and the plug 108 to slide synchronously. The telescopic side plate 107 retracts the telescopic rod 309 and compresses the spring 310, so that the telescopic side plate 107, through the spring 310 and the fixed ring plate 308, drives the plug 108 to elastically crimp inside the inlet and outlet of the gear pump, thus realizing the elastic crimping operation of the pipeline.

[0027] When adjustment of connector 108 is required, firstly, the second motor 401 is started via control panel 113. The second motor 401 drives the movable shaft 402 to rotate in a limited position. The movable shaft 402 drives the third bevel gear 403 to rotate synchronously. The third bevel gear 403 meshes and drives the fourth bevel gear 404 to rotate. The fourth bevel gear 404 drives the movable worm gear 405 to rotate in a limited position. The movable worm gear 405 meshes and drives the movable worm wheel 406 to rotate synchronously. The movable worm wheel 406 drives the movable screw 407 to rotate in a limited position. The movable screw 407 drives the lifting screw cylinder 408 to slide up and down. The lifting screw cylinder 408 drives the symmetrical telescopic plate 409 to slide synchronously. This allows the symmetrical telescopic plate 409 to drive the connector 108 to slide synchronously via the telescopic side plate 107, thus realizing the adjustment operation of connector 108. The operation ends here.

[0028] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention in any way. Those skilled in the art can readily implement the present invention based on the accompanying drawings and the description above. However, any modifications, alterations, or variations made by those skilled in the art without departing from the scope of the present invention, using the disclosed technical content, are equivalent embodiments of the present invention. Furthermore, any modifications, alterations, or variations made to the above embodiments based on the essential technology of the present invention are still within the protection scope of the present invention.

Claims

1. A durability testing bench for gear pump testing, comprising a base (101), characterized in that: An oil storage tank (102) is fixedly connected to the top center of the base (101). A testing platform (103) is fixedly connected to the top of the base (101). A transmission box (104) is fixedly connected to the bottom center of the testing platform (103). A support frame (105) is fixedly connected to the top of the testing platform (103). A linkage box (106) is fixedly connected to the top of the support frame (105). Telescopic side plates (107) are slidably connected to the top two sides of the inner wall of the support frame (105). A connector (108) is inserted inside the lower part of the telescopic side plate (107). The connector on the right side... A return oil pipe (109) is fixedly connected to the right side of (108), and a flow meter (110) is fixedly connected to the other end of the return oil pipe (109). The flow meter (110) is fixedly connected to the upper right side of the oil storage tank (102) on the left side. An oil extraction pipe (111) is fixedly connected to the left side of the plug (108) on the left side. The other end of the oil extraction pipe (111) is fixedly connected to the lower left side of the oil storage tank (102). An adjustment box (112) is fixedly connected to the top middle of the inner wall of the support frame (105). A control panel (113) is fixedly connected to the top right side of the detection platform (103).

2. The durability testing bench for gear pump testing according to claim 1, characterized in that: The transmission box (104) is equipped with a clamping mechanism (2) inside. The clamping mechanism (2) includes a first motor (201). The left side of the first motor (201) is fixedly connected to the middle right side of the transmission box (104). The linkage box (106) is equipped with a pressing mechanism (3) inside. The pressing mechanism (3) includes a transmission worm gear (304). The front end of the transmission worm gear (304) is movably connected to the front side of the inner wall of the linkage box (106). The rear end of the transmission worm gear (304) passes through the rear side wall of the linkage box (106). The adjusting box (112) is equipped with an adjusting mechanism (4) inside. The device includes a second motor (401), the top of which is fixedly connected to the bottom center of the regulating box (112). A transmission shaft (202) is fixedly connected to the middle left side of the first motor (201). The left end of the transmission shaft (202) passes through the transmission box (104) and is fixedly connected to a first bevel gear (203). The left side of the first bevel gear (203) is meshed with a second bevel gear (204). A first symmetrical screw (205) is fixedly connected to the inner wall of the second bevel gear (204). The front end of the first symmetrical screw (205) is movably connected to the inner wall of the transmission box (104).

3. The durability testing bench for gear pump testing according to claim 2, characterized in that: The outer walls of the first symmetrical screw (205) are threaded with clamping sleeves (206) on both sides. The outer walls of the clamping sleeves (206) pass through the detection table (103) and are fixedly connected to a sliding table (207). The top center of the sliding table (207) is fixedly connected to a folding clamp (208).

4. The durability testing bench for gear pump testing according to claim 3, characterized in that: Limiting sleeves (209) are fixedly connected to both sides of the outer wall of the sliding stage (207). A limiting rod (210) is inserted into the inner wall of the limiting sleeve (209). The two ends of the limiting rod (210) are fixedly connected to both sides of the inner wall of the detection stage (103).

5. The durability testing bench for gear pump testing according to claim 2, characterized in that: The rear end of the first symmetrical screw (205) passes through the transmission box (104) and is fixedly connected to the drive wheel (301). The lower outer wall of the drive wheel (301) is meshed with the linkage belt (302). The inner wall of the linkage belt (302) is meshed with the driven wheel (303). The rear end of the transmission worm (304) is fixedly connected to the middle front side of the driven wheel (303).

6. The durability testing bench for gear pump testing according to claim 5, characterized in that: The outer wall of the transmission worm (304) is meshed with a transmission worm wheel (305). The inner wall of the transmission worm wheel (305) is fixedly connected with a second symmetrical screw (306). The two ends of the second symmetrical screw (306) are movably connected to the inner wall of the linkage box (106). The outer walls of the second symmetrical screw (306) are threaded with crimping sleeves (307). The outer wall of the crimping sleeve (307) passes through the top plate of the support frame (105) and is fixedly connected to the top of the telescopic side plate (107).

7. The durability testing bench for gear pump testing according to claim 1, characterized in that: A fixing ring plate (308) is fixedly connected to the inner side of the outer wall of the connector (108). A telescopic rod (309) is fixedly connected to the outer side of the fixing ring plate (308). The other end of the telescopic rod (309) is fixedly connected to the lower inner side of the telescopic side plate (107). A spring (310) is fixedly connected to the outer ring of the fixing ring plate (308) on the outer ring of the telescopic rod (309). The outer end of the spring (310) is fixedly connected to the inner side of the telescopic side plate (107).

8. The durability testing bench for gear pump testing according to claim 2, characterized in that: The second motor (401) has a movable shaft (402) fixedly connected to the top center. The top end of the movable shaft (402) passes through the adjustment box (112) and is fixedly connected to a third bevel gear (403).

9. The durability testing bench for gear pump testing according to claim 8, characterized in that: A fourth bevel gear (404) is meshed above the third bevel gear (403). A movable worm (405) is fixedly connected to the inner wall of the fourth bevel gear (404). The two ends of the movable worm (405) are movably connected to the inner wall of the regulating box (112). Movable worm wheels (406) are meshed on both sides of the outer wall of the movable worm (405).

10. A durability testing bench for gear pump testing according to claim 9, characterized in that: The inner wall of the movable worm gear (406) is fixedly connected to a movable screw (407). The top end of the movable screw (407) is movably connected to the top of the inner wall of the support frame (105). The bottom end of the movable screw (407) passes through the bottom of the adjustment box (112) and is fitted with a lifting screw cylinder (408). The bottom end of the lifting screw cylinder (408) is fixedly connected to a symmetrical telescopic plate (409). The two ends of the symmetrical telescopic plate (409) are fixedly connected to the inner middle of the telescopic side plate (107).

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