A rubber seal fatigue detection device

Abstract

The present invention belongs to the technical field of fatigue detection of rubber seals, and specifically relates to a fatigue detection device for rubber seals, including a fatigue detection platform, the fatigue detection platform including a first mounting plate, a second mounting plate and a support plate, a plurality of medium storage boxes are arranged on the top of the support plate, a medium flow mechanism is installed between the plurality of medium storage boxes, a seal placement mechanism is arranged above the first mounting plate, the other end of the medium flow mechanism is connected to the bottom of the seal placement mechanism, a clamping mechanism is arranged at the bottom of the second mounting plate, a delivery pipe is arranged at the bottom of the medium storage box, the other end of the delivery pipe is connected to a conduit, and the bottom of the conduit is connected to the clamping mechanism. The present invention can adjust the set medium and medium temperature during fatigue detection, can simulate the working conditions of the rubber seal in actual use, increase the diversity of detection items, and ensure the accuracy of fatigue detection results.

Description

Technical Field

[0001] The invention belongs to the technical field of fatigue detection of rubber seals, and in particular relates to a fatigue detection device for rubber seals. Background Art

[0002] Rubber seals are a type of rubber product used to prevent liquid or gas leakage. Rubber seals are indispensable rubber products in modern industry and daily life. They meet the sealing needs under various complex working conditions with their unique physical and chemical properties. From automobile engines to household appliances, from food processing to medical equipment, rubber seals ensure the normal operation and safety of equipment. Due to their unique elasticity and temperature resistance, rubber seals have become a key factor in solving leakage and sealing problems. Rubber seals need to undergo fatigue testing after production to evaluate the fatigue performance of rubber seals and determine whether they meet the design requirements and use requirements. According to the fatigue performance evaluation results, the design and material selection of rubber seals are optimized to improve their fatigue performance and service life;

[0003] When performing fatigue testing on rubber seals, fatigue testing equipment for rubber seals will determine the test conditions such as temperature, pressure, medium, etc. according to the actual application environment and working conditions, perform repeated or periodic loading, record data such as the number of loading times and stress changes, and analyze the performance changes of rubber seals during the fatigue process based on the experimental data, such as elastic modulus, hardness, tensile strength, etc., as well as indicators such as fatigue life. However, the actual application environment of rubber seals is diverse. In complex application environments, the media in contact with them and the temperature of the media often change. The temperature, pressure, medium and other conditions set by existing fatigue testing equipment cannot be changed at will, the fatigue testing items are relatively single, and complex working conditions cannot be simulated. Summary of the invention

[0004] The purpose of the present invention is to provide a rubber seal fatigue detection device, which can adjust the set medium and medium temperature during the fatigue detection process, can simulate the working conditions of the rubber seal in actual use, increase the diversity of detection items, and ensure the accuracy of fatigue detection results.

[0005] The technical solution adopted by the present invention is as follows:

[0006] A rubber seal fatigue detection device comprises a fatigue detection platform, the fatigue detection platform comprises a first mounting plate, a second mounting plate and a supporting plate, a plurality of medium storage boxes are arranged on the top of the supporting plate, a medium flow mechanism is installed between the plurality of medium storage boxes, a seal placement mechanism is arranged above the first mounting plate, the other end of the medium flow mechanism is connected to the bottom of the seal placement mechanism, a pressing mechanism is arranged at the bottom of the second mounting plate, a delivery pipe is arranged at the bottom of the medium storage box, the other end of the delivery pipe is connected to a confluence plate, and the bottom of the confluence plate is connected to the pressing mechanism;

[0007] The medium flow mechanism includes a diversion outer ring, a diversion inner ring is arranged inside the diversion outer ring, a switching table is rotatably connected between the diversion outer ring and the diversion inner ring, a plurality of transmission holes are arranged on the outside of the diversion outer ring and the diversion inner ring, the transmission holes are connected to the medium storage box, a docking hole is arranged on the outside of the switching table, a diversion tube is connected between the diversion inner ring and the sealing member placement mechanism, a diversion partition is fixed inside the diversion tube, and the inside of the diversion tube is divided into a plurality of diversion channels by the diversion partition.

[0008] In a preferred embodiment, the fatigue detection platform also includes a base, a support rod is fixed at one end of the top of the base, the support plate is fixed to the top of the support rod, two supporting columns are installed on the top of the middle part of the base, the first mounting plate is fixed to the top of the two supporting columns, a motor is arranged inside the supporting column, the output end of the motor is located above the first mounting plate and is rotatably connected to a lifting transmission screw, the top of the lifting transmission screw is rotatably connected to the bottom of the support plate, the second mounting plate is installed between the two lifting transmission screws, and the lifting transmission screw is threadedly connected to the second mounting plate.

[0009] In a preferred embodiment, a bottom plate is fixed to the bottom of the diversion outer ring, a first motor is fixed to the bottom of the bottom plate, an output end of the first motor is fixed to the bottom of the switching table, a dividing plate is provided in the middle of the diversion inner ring, the dividing plate is fixed to the diversion partition, the middle of the diversion inner ring is divided into several diversion chambers by the dividing plate, and the transmission hole is connected to the diversion chamber.

[0010] In a preferred embodiment, the seal placement mechanism includes a carrier seat, which is installed on the top of the first mounting plate, and the bottom of the carrier seat is connected to the diversion pipe. A limiting ring is arranged in the middle of the top of the carrier seat, and a plurality of limiting sliding rods are slidably connected to the upper surface of the carrier seat and located on the outside of the limiting ring.

[0011] In a preferred embodiment, the carrier seat is internally rotatably connected to a flow switching rotating member, a flow hole is provided in the middle of the flow switching rotating member, the shape of the flow hole is the same as the cross-section of a diversion channel in the diversion pipe, an outer convex plate is installed on one side of the carrier seat, the inner convex plate is internally rotatably connected to a transmission gear, a second motor is fixed inside the outer convex plate, the output end of the second motor is connected to the outer convex plate, a driven tooth is provided on the outer side of the flow switching rotating member, and the transmission gear is meshed with the driven tooth.

[0012] In a preferred embodiment, the clamping mechanism includes a pressing platform, the top of the pressing platform is connected to the bottom of the busbar, an extrusion seat is provided in the middle of the bottom of the pressing platform, and rotating shafts are provided at both ends of the extrusion seat. The rotating shaft is rotatably connected to the pressing platform, and the pressing platform and the extrusion seat are connected through a rotating block.

[0013] In a preferred embodiment, mounting plates are fixed on both sides of the pressing platform, a threaded column is threadedly connected to the middle of the mounting plates, a rotating block is fixed to the bottom of the threaded column, rotating connecting rods are rotatably connected to both sides of the extrusion seat, and the rotating connecting rods are rotatably connected to the rotating block.

[0014] In a preferred embodiment, a knob is fixed on the top of the threaded column, and the surface of the knob is provided with anti-slip grooves.

[0015] In a preferred embodiment, a delivery pump is provided inside the medium storage box, the output end of the delivery pump is connected to the delivery pipe, a temperature controller is provided inside the medium storage box, and a temperature regulating device is also provided inside the medium storage box, and the temperature regulating device is connected to the temperature controller.

[0016] The technical effects achieved by the present invention are:

[0017] The present invention is provided with a medium flow mechanism, a seal placement mechanism and a plurality of confluence plates, and can freely switch the confluence plates connected to the medium flow mechanism and the seal placement mechanism by rotating the switching truncated table and the flow switching rotating member, thereby switching the medium used for detection and the temperature of the medium, simulating the medium changes and temperature changes that the rubber seal may encounter during operation, and ensuring that the fatigue detection results are more consistent with the actual application data;

[0018] The present invention is provided with a clamping mechanism, which can manually adjust the angle of the mounting plate that fits the rubber seal inside, thereby simulating the pressure state of the rubber seal in a working state. Changing the angle of the mounting plate can change the pressure balance of the rubber seal, thereby increasing the pressure on one side and reducing the pressure on the other side, simulating the uneven pressure condition that may be encountered during actual use, and ensuring that the fatigue detection result can be more consistent with the actual application data. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0020] Figure 2 It is a schematic diagram of the structure of the flow dividing pipe and the flow dividing baffle of the present invention;

[0021] Figure 3 It is a partial structural schematic diagram of the medium flow mechanism of the present invention;

[0022] Figure 4 It is a partial structural exploded schematic diagram of the medium flow mechanism of the present invention;

[0023] Figure 5 It is a cross-sectional schematic diagram of the local structural connection of the medium flow mechanism of the present invention;

[0024] Figure 6 It is a structural schematic diagram of the sealing member placement mechanism of the present invention;

[0025] Figure 7 is a schematic cross-sectional structure diagram of the sealing member placement mechanism of the present invention;

[0026] Figure 8 It is a schematic diagram of the connection between the busbar and the clamping mechanism of the present invention;

[0027] Fig. 9 It is a schematic diagram of the exploded structure of the clamping mechanism of the present invention;

[0028] Fig.10 It is a cross-sectional schematic diagram of the clamping mechanism of the present invention.

[0029] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0030] 1. Fatigue detection platform; 2. Medium flow mechanism; 3. Sealing member placement mechanism; 4. Clamping mechanism; 11. Base; 12. Support column; 13. First mounting plate; 14. Lifting transmission screw; 15. Second mounting plate; 16. Delivery pipe; 17. Confluence plate; 18. Support plate; 19. Medium storage box; 21. Diversion outer ring; 22. Bottom plate; 23. First motor; 24. Switching table; 25. Diversion inner ring; 26. Diversion pipe; 27. Diversion partition; 31. Carrying seat; 32. Limiting ring; 33. Limiting slide bar; 34. Flow switching rotating member; 35. Outer convex plate; 36. Second motor; 37. Transmission gear; 38. Driven gear; 41. Pressing platform; 42. Extrusion seat; 43. Rotating shaft; 44. Rotating connecting rod; 45. Mounting plate; 46. Threaded column; 47. Knob; 48. Rotating block. DETAILED DESCRIPTION

[0031] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0032] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0033] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure or characteristic that may be included in at least one implementation of the present invention. The phrase "in a preferred embodiment" that appears in different places in this specification does not refer to the same embodiment, nor is it a separate or selective embodiment that is mutually exclusive with other embodiments.

[0034] Secondly, the present invention is described in detail with reference to the schematic diagram. When describing the embodiments of the present invention in detail, for the sake of convenience, the cross-sectional diagrams showing the device structure will not be partially enlarged according to the general scale, and the schematic diagrams are only examples, which should not limit the scope of protection of the present invention. In addition, in actual production, the three-dimensional dimensions of length, width and depth should be included.

[0035] Please see attached Figure 1-Figure 10 As shown, a rubber seal fatigue detection device comprises: a fatigue detection platform 1, the fatigue detection platform 1 comprises a first mounting plate 13, a second mounting plate 15 and a supporting plate 18, a plurality of medium storage boxes 19 are arranged on the top of the supporting plate 18, a medium flow mechanism 2 is installed between the plurality of medium storage boxes 19, a seal placement mechanism 3 is arranged above the first mounting plate 13, the other end of the medium flow mechanism 2 is connected to the bottom of the seal placement mechanism 3, a pressing mechanism 4 is arranged at the bottom of the second mounting plate 15, a delivery pipe 16 is arranged at the bottom of the medium storage box 19, the other end of the delivery pipe 16 is connected to a confluence plate 17, and the bottom of the confluence plate 17 is connected to the pressing mechanism 4;

[0036] The medium flow mechanism 2 includes a diverter outer ring 21, a diverter inner ring 25 is arranged inside the diverter outer ring 21, a switching table 24 is rotatably connected between the diverter outer ring 21 and the diverter inner ring 25, a plurality of transmission holes are arranged on the outer sides of the diverter outer ring 21 and the diverter inner ring 25, the transmission holes are connected to the medium storage box 19, a docking hole is arranged on the outer side of the switching table 24, a diverter tube 26 is connected between the diverter inner ring 25 and the sealing member placement mechanism 3, a diverter partition 27 is fixed inside the diverter tube 26, and the inside of the diverter tube 26 is divided into a plurality of diverter channels by the diverter partition 27.

[0037] As mentioned above, when performing fatigue test on rubber seal, seal placement mechanism 3 is used to carry rubber seal for testing, and pressing mechanism 4 is used to be combined with seal placement mechanism 3, and pressure simulating working state is applied to seal placement mechanism 3, and at the same time, medium flow path in the middle part after seal placement mechanism 3 and pressing mechanism 4 are combined with medium flow mechanism 2 constitutes a circulation flow path, and after starting the device, medium will flow in medium flow mechanism 2, seal placement mechanism 3 and pressing mechanism 4, so as to complete the simulation of working environment of rubber seal and perform fatigue test;

[0038] Furthermore, a plurality of medium storage boxes 19 are provided to store different media of different temperatures. At the same time, the confluence plate 17 provided inside the delivery pipe 16 can divide the interior of the delivery pipe 16 into a plurality of diversion channels, each of which corresponds to a medium storage box 19. When in use, the docking hole of the switching table 24 can be adjusted to correspond to the corresponding transmission hole by rotating the switching table 24. When the docking hole is docked with the transmission hole, the corresponding medium storage box 19 is connected to the corresponding diversion channel. At this time, the medium used for detection is replaced with the medium stored in the corresponding medium storage box 19, which can facilitate the switching of the detection medium during the fatigue monitoring of the rubber seal, and can more accurately simulate the working environment of the rubber seal, so that the fatigue detection data is more accurate.

[0039] In a preferred embodiment, please refer to Figure 1 The fatigue detection platform 1 also includes a base 11, a support rod is fixed at one end of the top of the base 11, a supporting plate 18 is fixed on the top of the support rod, two supporting columns 12 are installed on the top of the middle part of the base 11, a first mounting plate 13 is fixed on the top of the two supporting columns 12, a motor is arranged inside the supporting column 12, an output end of the motor is located above the first mounting plate 13 and is rotatably connected with a lifting transmission screw 14, the top of the lifting transmission screw 14 is rotatably connected to the bottom of the supporting plate 18, a second mounting plate 15 is installed between the two lifting transmission screws 14, and the lifting transmission screw 14 is threadedly connected to the second mounting plate 15.

[0040] In this embodiment, when performing fatigue testing on rubber seals, the rubber seal to be tested is placed on top of the seal placement mechanism 3, and then the lifting transmission screw 14 is driven to rotate by the motor, and the second mounting plate 15 is driven to descend by the thread, and the seal placement mechanism 3 and the clamping mechanism 4 are combined, and the rubber seal is pressed between the seal placement mechanism 3 and the clamping mechanism 4. Then, according to the experimental conditions, a suitable temperature and a suitable medium are selected, and the degree of combination of the seal placement mechanism 3 and the clamping mechanism 4 is adjusted, and the pressure on the rubber seal is adjusted to perform repeated and intermittent delivery of the medium.

[0041] Secondly, please also refer to Figure 3 , Figure 4 and Figure 5 A bottom plate 22 is fixed to the bottom of the shunt outer ring 21, a first motor 23 is fixed to the bottom of the bottom plate 22, an output end of the first motor 23 is fixed to the bottom of the switching table 24, a separator is provided in the middle of the shunt inner ring 25, the separator is fixed to the shunt partition 27, the middle of the shunt inner ring 25 is divided into several shunt chambers by the separator, and the transmission hole is connected to the shunt chamber.

[0042] As mentioned above, the rotation of the switching table 24 is driven by the first motor 23, and the diversion partition 27 provided on the diversion inner ring 25 is connected to the partition plate inside it. When the medium is transported, the medium is transported in sections through the diversion channel, the diversion chamber and the transmission hole.

[0043] Secondly, please also refer to Figure 6 and Figure 7 The sealing member placement mechanism 3 includes a carrier seat 31, which is mounted on the top of the first mounting plate 13, and the bottom of the carrier seat 31 is connected to the shunt pipe 26. A limit ring 32 is provided in the middle of the top of the carrier seat 31, and a plurality of limit slide bars 33 are slidably connected to the upper surface of the carrier seat 31 and located on the outer side of the limit ring 32. A flow switching rotating member 34 is rotatably connected to the inside of the carrier seat 31, and a flow hole is provided in the middle of the flow switching rotating member 34. The shape of the flow hole is the same as the cross-section of a shunt channel in the shunt pipe 26. An outer convex plate 35 is installed on one side of the carrier seat 31, and a transmission gear 37 is rotatably connected to the inside of the outer convex plate 35. A second motor 36 is fixed to the inside of the outer convex plate 35, and the output end of the second motor 36 is connected to the outer convex plate 35. A driven tooth 38 is provided on the outer side of the flow switching rotating member 34, and the transmission gear 37 is meshed with the driven tooth 38.

[0044] In this embodiment, the limiting ring 32 and the slidable limiting slide rod 33 disposed above the loading seat 31 are used to position the rubber seal, so as to facilitate the rapid loading of the rubber seal;

[0045] When the switching table 24 is controlled to rotate and the medium used for detection is switched, the corresponding medium storage box 19 is connected to the diversion channel. While the switching table 24 rotates, the second motor 36 is controlled to drive the transmission gear 37 to rotate, and the flow switching rotating member 34 is driven to rotate under the action of meshing. When the flow switching rotating member 34 rotates, the flow hole set on the flow switching rotating member 34 will rotate at the same time, and it will stop when it rotates until the flow hole is connected to the corresponding flow channel, so that the medium storage box 19, the diversion pipe 26, the sealing member placement mechanism 3, and the clamping mechanism 4 form a circulating flow path.

[0046] Secondly, please also refer to Figure 8 , Fig. 9 and Fig.10The clamping mechanism 4 includes a pressing platform 41, the top of the pressing platform 41 is connected to the bottom of the busbar 17, an extrusion seat 42 is provided in the middle of the bottom of the pressing platform 41, and rotating shafts 43 are provided at both ends of the extrusion seat 42. The rotating shaft 43 is rotatably connected to the pressing platform 41, and the pressing platform 41 and the extrusion seat 42 are connected through a rotating block 48. Mounting plates 45 are fixed on both sides of the pressing platform 41, and a threaded column 46 is threadedly connected to the middle of the mounting plate 45. A rotating block 48 is fixed to the bottom of the threaded column 46. Rotating connecting rods 44 are rotatably connected to the rotating block 48 on both sides of the extrusion seat 42. A knob 47 is fixed on the top of the threaded column 46, and the surface of the knob 47 is provided with anti-slip grooves.

[0047] In the above, when fatigue detection of rubber seals is performed, by lowering the clamping mechanism 4 and merging the clamping mechanism 4 with the seal placement mechanism 3, pressure can be applied to the rubber seal, thereby simulating the pressure that the rubber seal will be subjected to during operation. At the same time, by rotating the two knobs 47 in different directions, the two threaded columns 46 are driven to rise and fall respectively, and at the same time, the two rotating connecting rods 44 are pushed and pulled to rise and fall respectively, and at the same time, the extrusion seat 42 is driven to form an angular offset. When the seal placement mechanism 3 and the clamping mechanism 4 are combined, the pressure applied by the extrusion seat 42 to the rubber seal will produce a deviation, simulating the uneven force that may be caused by the rubber seal during use, enriching the fatigue detection data, and making its fatigue detection results more accurate.

[0048] Furthermore, a delivery pump is provided inside the medium storage box 19, the output end of the delivery pump is connected to the delivery pipe 16, a temperature controller is provided inside the medium storage box 19, and a temperature regulating device is also provided inside the medium storage box 19, and the temperature regulating device is connected to the temperature controller.

[0049] In the above, the temperature regulating device arranged inside the medium storage box 19 includes a heater and a refrigerator, which are used to adjust the temperature of the medium stored inside the medium storage box 19. The thermostat is used to control the power of the heater or the refrigerator to control the temperature of the medium. The delivery pump arranged inside the medium storage box 19 includes an infusion pump and a gas delivery pump, which are respectively used to deliver liquid and gas for circulation.

[0050] The working principle of the present invention is as follows: when in use, the sliding limit slide bar 33 is adjusted to a suitable position according to the specifications of the rubber seal, and the rubber seal is placed on the top of the carrier 31, the clamping mechanism 4 is controlled to descend as a whole, and the seal placement mechanism 3 and the clamping mechanism 4 are combined to apply pressure to the rubber seal to simulate the pressure applied to the rubber seal during use. At the same time, before the clamping mechanism 4 is combined, the extrusion seat 42 can be controlled to deflect at an angle by rotating the knob 47. After the seal placement mechanism 3 and the clamping mechanism 4 are combined, the rubber seal will be subjected to uneven pressure, which plays a richer pressure simulation state and ensures the accuracy of the fatigue detection results. After the combination, the rotating switching stage 24 can be used to adjust the channel for the circulation of the medium, which is connected to different medium storage boxes 19 respectively, and the temperature and type of the medium can be changed. The medium storage box 19 can be switched during the detection process to simulate the medium changes and temperature changes that may occur during actual use, enrich the state of fatigue detection, increase the diversity of detection items, and ensure the accuracy of fatigue detection results.

[0051] The above is only a preferred embodiment of the present invention. It should be noted that, for those skilled in the art, several improvements and modifications can be made without departing from the principles of the present invention, and these improvements and modifications should also be considered as the protection scope of the present invention. The structures, devices and operating methods not specifically described and explained in the present invention shall be implemented according to the conventional means in the art unless otherwise specified and limited.

Claims

1. A rubber seal fatigue detection device, characterized in that: The fatigue detection platform (1) comprises a first mounting plate (13), a second mounting plate (15) and a supporting plate (18); a plurality of medium storage boxes (19) are arranged on the top of the supporting plate (18); a medium flow mechanism (2) is installed between the plurality of medium storage boxes (19); a sealing member placement mechanism (3) is arranged above the first mounting plate (13); the other end of the medium flow mechanism (2) is connected to the bottom of the sealing member placement mechanism (3); a clamping mechanism (4) is arranged at the bottom of the second mounting plate (15); a delivery pipe (16) is arranged at the bottom of the medium storage box (19); the other end of the delivery pipe (16) is connected to a collector plate (17); the bottom of the collector plate (17) is connected to the clamping mechanism (4); The medium flow mechanism (2) comprises a flow diversion outer ring (21), a flow diversion inner ring (25) is arranged inside the flow diversion outer ring (21), a switching truncated plate (24) is rotatably connected between the flow diversion outer ring (21) and the flow diversion inner ring (25), a plurality of transmission holes are arranged on the outside of the flow diversion outer ring (21) and the flow diversion inner ring (25), the transmission holes are connected to the medium storage box (19), a docking hole is arranged on the outside of the switching truncated plate (24), a flow diversion pipe (26) is connected between the flow diversion inner ring (25) and the sealing member placement mechanism (3), a flow diversion partition (27) is fixed inside the flow diversion pipe (26), and the inside of the flow diversion pipe (26) is divided into a plurality of flow diversion channels by the flow diversion partition (27); The clamping mechanism (4) comprises a pressing platform (41), the top of the pressing platform (41) is connected to the bottom of the collector plate (17), an extrusion seat (42) is provided in the middle of the bottom of the pressing platform (41), a rotating shaft (43) is provided at both ends of the extrusion seat (42), the rotating shaft (43) is rotatably connected to the pressing platform (41), and the pressing platform (41) and the extrusion seat (42) are connected via a rotating block (48); Mounting plates (45) are fixed on both sides of the pressing platform (41), a threaded column (46) is threadedly connected to the middle of the mounting plate (45), a rotating block (48) is fixed to the bottom of the threaded column (46), and rotating connecting rods (44) are rotatably connected to both sides of the extrusion seat (42), and the rotating connecting rods (44) are rotatably connected to the rotating block (48).

2. A rubber seal fatigue detection device according to claim 1, characterized in that: The fatigue detection platform (1) also includes a base (11), a support rod is fixed at one end of the top of the base (11), the support plate (18) is fixed to the top of the support rod, two support columns (12) are installed at the top of the middle part of the base (11), the first mounting plate (13) is fixed to the top of the two support columns (12), a motor is arranged inside the support column (12), the output end of the motor is located above the first mounting plate (13) and is rotatably connected to a lifting transmission screw (14), the top of the lifting transmission screw (14) is rotatably connected to the bottom of the support plate (18), the second mounting plate (15) is installed between the two lifting transmission screws (14), and the lifting transmission screw (14) is threadedly connected to the second mounting plate (15).

3. A rubber seal fatigue detection device according to claim 1, characterized in that: A bottom plate (22) is fixed to the bottom of the flow-dividing outer ring (21), a first motor (23) is fixed to the bottom of the bottom plate (22), an output end of the first motor (23) is fixed to the bottom of the switching truncated table (24), a separator is provided in the middle of the flow-dividing inner ring (25), the separator is fixed to the flow-dividing partition (27), the middle of the flow-dividing inner ring (25) is divided into a plurality of flow-dividing chambers by the separator, and the transmission hole is connected to the flow-dividing chamber.

4. A rubber seal fatigue detection device according to claim 1, characterized in that: The sealing member placement mechanism (3) comprises a carrier seat (31), the carrier seat (31) being mounted on the top of the first mounting plate (13), the bottom of the carrier seat (31) being connected to the shunt pipe (26), a limiting ring (32) being arranged in the middle of the top of the carrier seat (31), and a plurality of limiting sliding rods (33) being slidably connected on the upper surface of the carrier seat (31) and located outside the limiting ring (32).

5. A rubber seal fatigue detection device according to claim 4, characterized in that: The carrier seat (31) is internally rotatably connected to a flow switching rotating member (34), a flow hole is provided in the middle of the flow switching rotating member (34), and the shape of the flow hole is the same as the cross-section of the shape of a shunt channel in the shunt pipe (26). An outer convex plate (35) is installed on one side of the carrier seat (31), and the inner part of the outer convex plate (35) is internally rotatably connected to a transmission gear (37). A second motor (36) is fixed inside the outer convex plate (35), and the output end of the second motor (36) is connected to the outer convex plate (35). A driven tooth (38) is provided on the outer side of the flow switching rotating member (34), and the transmission gear (37) is meshingly connected to the driven tooth (38).

6. A rubber seal fatigue detection device according to claim 1, characterized in that: A knob (47) is fixed to the top of the threaded column (46), and a surface of the knob (47) is provided with anti-slip grooves.

7. The rubber seal fatigue detection device according to claim 1, characterized in that: A delivery pump is arranged inside the medium storage box (19), the output end of the delivery pump is connected to the delivery pipe (16), a temperature controller is arranged inside the medium storage box (19), and a temperature regulating device is also arranged inside the medium storage box (19), and the temperature regulating device is connected to the temperature controller.

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