Window wiper transmission torque fatigue detection device

Abstract

The invention discloses a window wiper transmission torque fatigue detection device, and particularly relates to the technical field of window wiper torque detection.The window wiper transmission torque fatigue detection device is provided with a test box, locomotive glass is installed in one cavity, a transmission unit for driving a brush frame to move is arranged in the other cavity in a sliding mode, and rain wiping of the windshield wiper brush frame on the locomotive glass is simulated; the upper end face and the lower end face of locomotive glass are supported and limited by a sealing piece, the locomotive glass reaches the position above a cavity where the locomotive glass is installed through a sliding transfer frame, rainwater in different directions is sprayed out through a rain spraying assembly, the rainwater dripping environment of the locomotive glass is dynamically simulated, and the rotating frequency of a brush frame is obtained through testing; meanwhile, the shot rainwater and water stain images of the locomotive glass are recognized and analyzed, the specific area of the remaining rainwater and water stains of the locomotive glass is calculated, the calculated rainwater and water stain area data are recorded, statistics and analysis are conducted, the rainwater and water stain areas at different rainwater angles are obtained, and the influence degree on the driving sight line is judged.

Description

Technical Field

[0001] The present invention relates to the technical field of windshield wiper torque detection, and particularly to a device for detecting the fatigue of the transmission torque of a windshield wiper. Background Art

[0002] Windshield wipers are applied to rail vehicles such as locomotives, urban rails, subways, and high-speed EMUs. The main purpose of detecting the torque fatigue of windshield wipers is to evaluate the torque stability and durability of the transmission mechanism of windshield wipers during long-term use. By simulating the torque load and fatigue state during actual use, and performing periodic loading and unloading on it, monitoring and recording the torque change data during the test process, and detecting whether the windshield wiper can maintain stable performance within the predetermined service life, so as to ensure driving safety. Through fatigue detection, the torque stability and durability of the windshield wiper are evaluated, providing reliable quality assurance for automobile manufacturers and vehicle owners.

[0003] After retrieval, the utility model patent with the publication number of CN206974586U discloses a device for detecting the torque of a windshield wiper power transmission component, which has high detection accuracy, can quickly detect the torque of the windshield wiper power input shaft component, and is convenient to use.

[0004] In the prior art, although the detection of the windshield wiper transmission torque is achieved, the test of the windshield wiper acting on the locomotive glass is not simulated, and there are differences between the test results and actual use. The rainwater and water stains on the locomotive glass are scraped off by the windshield wiper blade, and the use effect of the blade and the water stains on the locomotive glass both affect the driving safety of the vehicle. Summary of the Invention

[0005] The purpose of the present invention is to provide a device for detecting the fatigue of the transmission torque of a windshield wiper to solve the problems mentioned in the above background art.

[0006] The main technical problem to be solved by the present invention is:

[0007] In the prior art, the test of the windshield wiper acting on the locomotive glass is not simulated, and there are differences between the test results and actual use. The use effect of the blade and the water stains on the locomotive glass both affect the driving safety of the vehicle.

[0008] The present invention can be realized by the following technical solutions:

[0009] A device for detecting the fatigue of the transmission torque of a windshield wiper, including a test bench, on the top surface of which an installation plate and a detection component are installed. At the end of the top surface of the installation plate, a test box is provided. There are two cavities inside the test box, and an adaptation groove is provided at the connection of the two cavities. A limiting component for carrying the locomotive glass is installed in one of the cavities inside the test box, and a transfer rack is slidably installed on the upper end surface of the test box;

[0010] The top of the inner cavity of the transfer rack is equipped with rain spraying components facing different directions;

[0011] The adapter groove is internally adapted to be installed with a blocking plate that slides linearly along another cavity, one side surface of the blocking plate is installed with at least one brush holder that contacts with the motorcycle glass and reciprocates, and the other side surface of the blocking plate is provided with a driving shaft connected to the detection component;

[0012] The limiting assembly comprises a bearing seat adapted to the end face of the motorcycle glass, a buffer pad is arranged on the upper surface of the bearing seat, and at least one sealing member is rotatably mounted on the upper end face of the bearing seat.

[0013] A further technical improvement of the present invention is that the closing member includes a pressing block, a main shaft is installed at the connection between the pressing block and the bearing seat, a rotating motor for rotating the main shaft is installed on the upper end surface of the bearing seat, and a support frame is provided on the lower end surface of the bearing seat, and the support frame is fixed to the bottom surface of a cavity.

[0014] A further technical improvement of the present invention is that a through groove 1 is provided on the surface of the buffer pad, and a through groove 2 communicating with the through groove 1 is provided on the surface of the bearing seat.

[0015] A further technical improvement of the present invention is that the detection component includes a torque sensor, one side of the torque sensor is connected to a clamping tool via a coupling, a connector is installed in the clamping tool, the end face of the connector is connected to a positioning sleeve, and the positioning sleeve is slidably engaged with the driving shaft via a keyway.

[0016] A further technical improvement of the present invention is that a linear guide is installed in another cavity, a slide is slidably installed on the outside of the linear guide, the slide is fixedly connected to the blocking plate, and a transmission unit for driving at least one brush holder to move is installed on the top surface of the slide, and the transmission unit is connected to the driving shaft.

[0017] A further technical improvement of the present invention is that the rain spray assembly includes a deflection plate rotatably arranged on the top of the inner cavity of the transfer rack, a rain water box is rotatably arranged on the bottom surface of the deflection plate, and an electric push rod for pushing the rain water box to move is hinged on the bottom surface of the deflection plate, cylinders are installed on the two inner wall surfaces of the top of the inner cavity of the transfer rack, and deflection protrusions are arranged on both sides of the bottom surface of the transfer rack, the deflection protrusions are centrally symmetrical about the midpoint of the bottom surface of the transfer rack, the pushing end of the cylinder is connected to a push block sliding on the inner wall surface of the transfer rack, and the deflection protrusion is arranged in abutment with the push block.

[0018] A further technical improvement of the present invention lies in that: an activity groove is provided inside the rainwater box, reset plates are elastically installed at the top and bottom of the inner cavity of the activity groove, a flow blocking plate is fitted between the two reset plates, a channel communicating with the top of the rainwater box is provided between one reset plate and the rainwater box, a plug-in socket is provided on the surface of the reset plate outside the channel, and a docking socket for cooperating with the plug-in socket is provided at the top of the inner cavity of the activity groove.

[0019] A further technical improvement of the present invention lies in that: a clamping cavity communicating with the channel is provided on the bottom surface of the reset plate, a telescopic member is arranged inside the clamping cavity and close to the inner wall surface of the channel, and an elastic member is installed at the end of the inner wall surface of the clamping cavity. The end surfaces of the telescopic member and the elastic member are both connected with a butting plate that is limited to slide in the clamping cavity. A hole groove is provided on the butting plate. A trapezoidal block protruding outwards is provided on the bottom surface of one reset plate, and an inclined groove that slidably fits with the trapezoidal block is provided on the surface of one flow blocking plate.

[0020] A further technical improvement of the present invention lies in that: a flow-through groove is provided through the surface of the flow blocking plate, a rain outlet communicating with the flow-through groove is provided on the bottom surface of the rainwater box, and a camera for shooting the rain scraping picture of the rotating brush rack is embedded and installed on the bottom surface of the top of the transfer rack.

[0021] Compared with the prior art, the present invention has the following beneficial effects:

[0022] 1. By setting a test box in the present invention, a locomotive glass is installed in one cavity, and a transmission unit for driving the movement of the brush rack is slidably arranged in the other cavity to simulate the rain scraping of the locomotive glass by the wiper brush rack. The upper end surface and the lower end surface of the locomotive glass are supported and limited by the sealing member. The transfer rack reaches above the cavity where the locomotive glass is installed through sliding, and rainwater in different directions is sprayed out by the rain spraying component to dynamically simulate the environment of rainwater dripping on the locomotive glass, and the rotation frequency of the brush rack is tested. At the same time, the rainwater water stain images of the locomotive glass are identified and analyzed, the specific area of the remaining rainwater water stains on the locomotive glass is calculated, the calculated rainwater water stain area data is recorded, and statistical analysis is carried out to obtain the size of the rainwater water stain area at different rain angles and judge the influence degree on the driving sight.

[0023] 2. The driving shaft rod is always slidably clamped with the detection component, that is, the positioning shaft sleeve is slidably clamped with the driving shaft rod through the key groove. Before detection, when the plug plate moves into the other cavity, it drives the brush rack close to the fitting groove, which is convenient for loading the locomotive glass. After detection, the plug plate seals the fitting groove to prevent the sprayed rainwater from falling into the other cavity, and the rain scraping quality of the locomotive glass is simulated through the rotating brush rack.

[0024] 3. The corresponding pushing blocks on both sides are pushed by cylinders to slide limitedly on the inner wall of the transfer rack. At this time, the pushing blocks abut against the deflection bumps, causing the deflection plate and the transfer rack to rotate in the longitudinal direction. Then, through the push of the electric push rod, the rainwater box and the deflection plate rotate in the horizontal direction, changing the angle at which the rainwater sprays on the locomotive glass. Then, through the movement of the baffle plate, since the trapezoidal block is designed with inclined sides on both sides, it will push the reset plate to move. That is, through the abutting contact between the trapezoidal block and the inclined groove, the reset plate at the top rises. Under the action of the elastic member, the abutting plate always contacts the baffle plate. By sliding, the flow hole distance between the channel, the flow groove, and the rain outlet is changed, the aperture becomes smaller, changing the rainwater flow rate, and the rain scraping performance of the test brush rack is tested by changing the rainwater flow rate to test the adaptability and durability of the windshield wiper. Description of the Drawings

[0025] For the convenience of those skilled in the art to understand, the present invention will be further described below with reference to the accompanying drawings.

[0026] Figure 1 It is a schematic diagram of the external structure of the present invention;

[0027] Figure 2 It is a schematic diagram of the internal structure of the test box of the present invention;

[0028] Figure 3 For the present invention Figure 2 The partial enlarged view at A in;

[0029] Figure 4 It is a schematic diagram of the internal structure of the transfer rack of the present invention;

[0030] Figure 5 It is a schematic diagram of the installation structure of the deflection plate and the pushing block of the present invention;

[0031] Figure 6 For the present invention Figure 4 The partial enlarged view at B in;

[0032] Figure 7 It is a schematic diagram of the internal structure of the rainwater box of the present invention;

[0033] Figure 8 For the present invention Figure 7 The partial enlarged view at C in.

[0034] In the figure: 1, test bench; 2, mounting plate; 3, torque sensor; 4, clamping tooling; 5, connector; 6, test box; 7, transfer rack; 8, mating groove; 9, plug plate; 10, linear guide rail; 11, sliding seat; 12, drive shaft rod; 13, reset plate; 14, positioning bushing; 15, cylinder; 16, bearing seat; 17, buffer pad; 18, support frame; 19, deflection bump; 20, flow blocking plate; 21, pressing block; 22, rotating motor; 23, deflection plate; 24, electric push rod; 25, pushing block; 26, rainwater box; 27, channel; 28, rain outlet; 29, docking seat; 30, plug-in seat; 31, movable groove; 32, clamping cavity; 33, elastic member; 34, telescopic member; 35, abutting plate; 36, flow-through groove; 37, inclined groove; 38, trapezoidal block. Specific embodiments

[0035] To further elaborate on the technical means and effects adopted by the present invention to achieve the predetermined invention purpose, the following will, in conjunction with the accompanying drawings and preferred embodiments, describe in detail the specific embodiments, structures, features and their effects of the present invention.

[0036] Please refer to Figures 1-8 As shown, the present invention provides a wiper drive torque fatigue detection device, including a test bench 1. A mounting plate 2 and a detection component are installed on the top surface of the test bench 1. A test box 6 is arranged at the end of the top surface of the mounting plate 2. There are two cavities inside the test box 6, and a mating groove 8 is arranged at the connection of the two cavities. A limit component for carrying the locomotive glass is installed in one cavity inside the test box 6, and a transfer rack 7 is slidably installed on the upper end surface of the test box 6. A rain spraying component facing different directions is installed at the top of the inner cavity of the transfer rack 7. A plug plate 9 that slides linearly along the other cavity is adaptively installed inside the mating groove 8. At least one brush holder that contacts the locomotive glass and rotates reciprocally is installed on one side surface of the plug plate 9, and a drive shaft rod 12 connected to the detection component is arranged on the other side surface of the plug plate 9. The limit component includes a bearing seat 16 adapted to the end face of the locomotive glass. At least one closing member is rotatably installed on the upper end surface of the bearing seat 16. A camera for shooting the wiper rotation and rain scraping picture is embedded at the bottom of the top of the transfer rack 7. When in use, such as Figure 1 and Figure 2As shown, the plug plate 9 is in the fitting groove 8. When the plug plate 9 moves into another cavity, it drives the brush holder close to the fitting groove 8. During this process, the drive shaft rod 12 is always slidably clamped with the detection component. Then, the locomotive glass is placed into one cavity of the test box 6 by means of a robotic arm, and the upper and lower end faces of the locomotive glass are supported and defined by the sealing member. After that, the plug plate 9 re-enters the fitting groove 8 to block the fitting groove 8 and prevent the sprayed rainwater from falling into another cavity. Then, it reaches above the cavity where the locomotive glass is installed through the sliding transfer rack 7, and the rain spraying component sprays rainwater in different directions to dynamically simulate the environment of rainwater dripping on the locomotive glass. Then, the camera captures the rotation frequency of the brush holder and the area of the rainwater stains on the locomotive glass. By setting appropriate frame rates and time intervals, the number of rotations of the brush holder per unit time (i.e., the rotation frequency) is calculated. After recording the calculated rotation frequency data, it is compared with the standard value to determine whether the rotation frequency of the brush holder meets the standard requirements. At the same time, the captured images of the rainwater stains on the locomotive glass are identified and analyzed. By setting appropriate thresholds and algorithms, the area size of the rainwater stains can be automatically detected. Using the measurement tools or algorithms in the image processing software, the specific area of the rainwater stains is calculated. The calculated rainwater stain area data is recorded, statistically analyzed, and the area sizes of the rainwater stains at different rain angles are obtained to judge the degree of influence on the driving line of sight.

[0037] Refer to Figure 3 As shown, the sealing member includes a pressing block 21. A main shaft is installed at the connection between the pressing block 21 and the bearing seat 16. Buffer pads 17 in contact with the locomotive glass are provided on the surfaces of both the bearing seat 16 and the pressing block 21. A rotary motor 22 for the rotation of the main shaft is installed on the upper end face of the bearing seat 16, and a support frame 18 is provided on the lower end face of the bearing seat 16. The support frame 18 is fixed to the bottom surface of a cavity. Initially, the pressing block 21 is opened and separated from the bearing seat 16 to facilitate the loading of the locomotive glass into the opened bearing seat 16. Then, the rotary motor 22 drives the main shaft to rotate, driving the pressing block 21 to rotate, and closely contacting the end of the locomotive glass through the buffer pad 17 to ensure the stable installation of the locomotive glass.

[0038] A first through groove is provided on the surface of the buffer pad 17, and a second through groove communicating with the first through groove is provided on the surface of the bearing seat 16. The rainwater slides down along the bottom of the locomotive glass and drips into the cavity through the first through groove and the second through groove. After the rainwater in the cavity is discharged, it is treated for reuse in the test.

[0039] Refer to Figure 1 As shown, the detection component includes a torque sensor 3. A clamping tooling 4 is connected to one side of the torque sensor 3 through a coupling. A connector 5 is installed in the clamping tooling 4. A positioning bushing 14 is connected to the end face of the connector 5. The positioning bushing 14 is slidably clamped with the drive shaft rod 12 through a keyway.

[0040] The torque sensor 3 is a strain gauge torque sensor, whose output end is connected to the coupling. The connector 5 is fixed by the clamping tooling 4, so that the central axis of the connector 5 is connected to the coupling, and then the connection between the output end of the torque sensor 3 and the central axis of the connector 5 is realized. Through the torque difference between the input end and the output end at both ends of the elastic shaft, the internal elastic shaft is deformed, and then the strain gauge detects the deformation, and finally the torque difference at both ends is obtained, so as to complete the detection of the torque of the drive shaft rod 12. After starting and running, the set number of rotation cycles of the program is continuously cycled. After the load endurance test cycle, it still has the working ability, and no obvious looseness and other abnormal phenomena should occur in each component to be qualified, otherwise it is judged as unqualified.

[0041] Refer to Figure 2 As shown, a linear guide 10 is installed in another cavity. A sliding seat 11 is slidably installed outside the linear guide 10. The sliding seat 11 is fixedly connected to the plug plate 9, and a transmission unit for driving at least one brush holder to move is installed on the top surface of the sliding seat 11. The transmission unit is connected to the drive shaft rod 12. The transmission unit includes a worm and a turbine, which are mature technical means in the field. The linear guide 10 drives the sliding seat 11 and the plug plate 9 to move together, provides rotational power to the drive shaft rod 12 by the transmission unit, and simultaneously drives at least one brush holder to move, and the brush holder wipes the locomotive glass.

[0042] Refer to Figure 4 and Figure 5 As shown, the rain spraying assembly includes a deflection plate 23 rotatably arranged on the top of the inner cavity of the transfer rack 7. A rainwater box 26 is rotatably arranged on the bottom surface of the deflection plate 23, and an electric push rod 24 for pushing the rainwater box 26 to move is hinged on the bottom surface of the deflection plate 23. Cylinders 15 are installed on both inner wall surfaces of the top of the inner cavity of the transfer rack 7, and deflection bumps 19 are arranged on both sides of the bottom surface of the transfer rack 7. The deflection bumps 19 are centrosymmetric about the midpoint of the bottom surface of the transfer rack 7. The pushing end of the cylinder 15 is connected to a pushing block 25 that slides on the inner wall surface of the transfer rack 7. The deflection bump 19 is in contact with the pushing block 25. When simulating the rain environment on the locomotive glass, the transfer rack 7 reaches directly above the locomotive glass. By pushing the pushing block 25 to slide on one side inner wall of the transfer rack 7 by one side cylinder 15, the pushing block 25 and the deflection bump 19 are pushed against each other, so that the deflection plate 23 and the transfer rack 7 rotate to one side; the corresponding pushing block 25 is pushed to slide on the other side inner wall of the transfer rack 7 by the cylinder 15 on the other side. At this time, the deflection plate 23 rotates to the other side. Through the longitudinal rotation of the deflection plate 23, the rainwater box 26 is synchronously driven to move together. Then, through the push of the electric push rod 24, the rainwater box 26 and the deflection plate 23 rotate in the horizontal direction, so that the angle of the rainwater sprayed on the locomotive glass is changed.

[0043] Refer to Figure 6 、 Figure 7and Figure 8 As shown, an activity slot 31 is provided inside the rainwater box 26. Reset plates 13 are elastically installed at the top and bottom of the inner cavity of the activity slot 31. A flow blocking plate 20 is fitted between the two reset plates 13. A channel 27 communicating with the top of the rainwater box 26 is provided between one reset plate 13 and the rainwater box 26. A socket 30 is provided on the surface of the reset plate 13 outside the channel 27. A docking seat 29 cooperating with the socket 30 is provided at the top of the inner cavity of the activity slot 31. During use, the flow blocking plate 20 is located between the upper and lower reset plates 13. The docking seat 29 and the socket 30 are inserted and limited. The reset plate 13 is elastically installed in the inner cavity of the activity slot 31. Refer to Figure 6 As shown, that is, the reset plate 13 elastically resets and slides in the vertical direction, and the docking seat 29 and the socket 30 remain in a fitting state. When the flow blocking plate 20 slides between the two reset plates 13, the top reset plate 13 is pushed upward by an upward thrust and moves upward, and the bottom reset plate 13 moves downward similarly.

[0044] Refer to Figure 8 As shown, a clamping cavity 32 communicating with the channel 27 is provided on the bottom surface of the reset plate 13. A telescopic member 34 is arranged inside the clamping cavity 32 and close to the inner wall surface of the channel 27. An elastic member 33 is installed at the end of the inner wall surface of the clamping cavity 32. The end surfaces of the telescopic member 34 and the elastic member 33 are both connected with a contact plate 35 that is limited and slides in the clamping cavity 32. A hole groove is provided on the contact plate 35. A trapezoidal block 38 protruding outward is provided on the bottom surface of one reset plate 13. An inclined groove 37 that slidably fits with the trapezoidal block 38 is provided on the surface of one flow blocking plate 20; a flow through groove 36 penetrates through the surface of the flow blocking plate 20. A rain outlet 28 communicating with the flow through groove 36 is provided on the bottom surface of the rainwater box 26. Since the trapezoidal block 38 adopts a design with two inclined sides, that is, when the flow blocking plate 20 moves on both sides, it will push the reset plate 13 to move. When the flow blocking plate 20 slides to one side, the trapezoidal block 38 contacts and abuts against the inclined groove 37, so that the top reset plate 13 rises. At this time, the contact plate 35 moves downward under the elastic recovery of the elastic member 33. The contact plate 35 always contacts the flow blocking plate 20, changing the flow hole distance between the channel 27, the flow through groove 36 and the rain outlet 28, and the aperture becomes smaller, changing the rainwater flow rate. By changing the rainwater flow rate, the rain scraping performance of the brush holder is tested, and the adaptability and durability of the windshield wiper are tested.

[0045] When the present invention is in use, the upper end face and the lower end face of the locomotive glass are supported and defined by the sealing member. The sliding transfer rack 7 reaches above the cavity where the locomotive glass is installed, and the rain spraying assembly sprays rainwater in different directions to dynamically simulate the environment of rainwater dripping on the locomotive glass. Then, the camera captures images, and through analysis, calculates the rotation frequency of the brush rack and the area of the rainwater stains on the locomotive glass. By setting appropriate frame rates and time intervals, calculates the number of rotations of the brush rack per unit time (i.e., the rotation frequency), records the calculated rotation frequency data and compares it with the standard value to determine whether the rotation frequency of the brush rack meets the standard requirements; at the same time, identifies and analyzes the captured images of the rainwater stains on the locomotive glass. By setting appropriate thresholds and algorithms, can automatically detect the area size of the rainwater stains, uses the measurement tools or algorithms in the image processing software to calculate the specific area of the rainwater stains, records the calculated area data of the rainwater stains, and conducts statistics and analysis to obtain the area sizes of the rainwater stains at different rain angles, and judges the degree of influence on the driving line of sight;

[0046] The drive shaft rod 12 is always slidably clamped with the detection assembly, that is, the positioning bushing 14 is slidably clamped with the drive shaft rod 12 through a keyway. Before detection, when the plug plate 9 moves into another cavity, it drives the brush rack close to the fitting groove 8 to facilitate the installation of the locomotive glass. After detection, the plug plate 9 seals the fitting groove 8 to prevent the sprayed rainwater from falling into another cavity, and simulates the rain scraping quality of the locomotive glass through the rotating brush rack;

[0047] By pushing the corresponding push blocks 25 on the inner wall of the transfer rack 7 by the cylinders 15 on both sides, at this time, the push blocks 25 abut against the deflection convex blocks 19, causing the deflection plate 23 to rotate in the longitudinal direction with the transfer rack 7. Then, through the push of the electric push rod 24, the rainwater box 26 rotates in the horizontal direction with the deflection plate 23, changing the angle at which the rainwater is sprayed on the locomotive glass;

[0048] Then, through the movement of the baffle 20, due to the design of the two inclined sides of the trapezoidal block 38, both will push the reset plate 13 to move, that is, through the abutting contact between the trapezoidal block 38 and the inclined groove 37, the top reset plate 13 rises. Under the action of the elastic member 33, the abutting plate 35 is always in contact with the baffle 20. By sliding, changes the flow hole distance between the channel 27, the flow groove 36 and the rain outlet 28, the aperture becomes smaller, changes the rainwater flow rate, and tests the rain scraping performance of the brush rack by changing the rainwater flow rate, and tests the adaptability and durability of the windshield wiper.

[0049] The above are only the preferred embodiments of the present invention and do not impose any formal restrictions on the present invention. Although the present invention has been disclosed above in the preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some changes or modifications to equivalent embodiments by using the above-disclosed technical content within the scope of the technical solution of the present invention. However, as long as it does not depart from the content of the technical solution of the present invention, any simple modification, equivalent change, and modification made to the above embodiments based on the technical essence of the present invention still fall within the scope of the technical solution of the present invention.

Claims

1. A wiper drive torque fatigue detection device, comprising a test bench (1), wherein a mounting plate (2) and a detection component are mounted on the top surface of the test bench (1), and it is characterized in that: A test box (6) is provided at the top end of the installation plate (2). There are two cavities inside the test box (6), and an adaptation slot (8) is provided at the connection of the two cavities. A limiting component for bearing the locomotive glass is installed in one cavity inside the test box (6), and a transfer rack (7) is slidably installed on the upper end face of the test box (6); At the top of the inner cavity of the transfer rack (7), a rain spraying component facing different directions is installed, and a camera for shooting the rotating rain scraping picture of the brush rack is embedded at the bottom surface of the top of the transfer rack (7); A plug plate (9) that slides linearly along the other cavity is adaptively installed inside the adaptation slot (8). At least one brush rack that contacts the locomotive glass and rotates reciprocally is installed on one side surface of the plug plate (9), and a drive shaft rod (12) connected to the detection component is provided on the other side surface of the plug plate (9); The limiting component includes a bearing seat (16) adapted to the end face of the locomotive glass, and at least one closing member is rotatably installed on the upper end face of the bearing seat (16).

2. The wiper drive torque fatigue detection device according to claim 1, wherein The closing member includes a pressing block (21). A main shaft is installed at the connection of the pressing block (21) and the bearing seat (16). Buffer pads (17) that contact the locomotive glass are provided on the surfaces of the bearing seat (16) and the pressing block (21). A rotary motor (22) for rotating the main shaft is installed on the upper end face of the bearing seat (16), and a support frame (18) is provided on the lower end face of the bearing seat (16), and the support frame (18) is fixed to the bottom surface of one cavity.

3. The wiper drive torque fatigue detection device according to claim 1, characterized in that, Through grooves one are provided on the surface of the buffer pad (17), and through grooves two that communicate with the through grooves one are provided on the surface of the bearing seat (16).

4. The wiper drive torque fatigue detection device according to claim 1, characterized in that, The detection component includes a torque sensor (3). One side of the torque sensor (3) is connected to a clamping tooling (4) through a coupling. A connector (5) is installed inside the clamping tooling (4). A positioning shaft sleeve (14) is connected to the end face of the connector (5), and the positioning shaft sleeve (14) and the drive shaft rod (12) are slidably clamped through a keyway.

5. The wiper drive torque fatigue detection device according to claim 1, characterized in that, A linear guide rail (10) is installed in the other cavity. A sliding seat (11) is slidably installed outside the linear guide rail (10). The sliding seat (11) is fixedly connected to the plug plate (9), and a transmission unit for driving at least one brush rack to move is installed on the top surface of the sliding seat (11), and the transmission unit is connected to the drive shaft rod (12).

6. The wiper drive torque fatigue detection device according to claim 1, characterized in that, The rain spraying component includes a deflecting plate (23) rotatably arranged at the top of the inner cavity of the transfer rack (7). A rainwater box (26) is rotatably arranged at the bottom surface of the deflecting plate (23), and an electric push rod (24) for pushing the rainwater box (26) to move is hinged to the bottom surface of the deflecting plate (23). Cylinders (15) are installed on the two inner wall surfaces at the top of the inner cavity of the transfer rack (7), and deflecting convex blocks (19) are provided on both sides of the bottom surface of the transfer rack (7). The deflecting convex blocks (19) are centrosymmetric about the midpoint of the bottom surface of the transfer rack (7). The pushing end of the cylinder (15) is connected to a pushing block (25) that slides on the inner wall surface of the transfer rack (7), and the deflecting convex block (19) is in contact with the pushing block (25).

7. The wiper drive torque fatigue detection device according to claim 6, characterized in that, An activity groove (31) is provided inside the rainwater box (26). A reset plate (13) is elastically installed at both the top and bottom of the inner cavity of the activity groove (31). A flow blocking plate (20) is arranged in a fitting manner between the two reset plates (13). A channel (27) that is communicated with the top of the rainwater box (26) is provided between one reset plate (13) and the rainwater box (26). A socket (30) is arranged on the surface of the reset plate (13) outside the channel (27). A docking seat (29) that is used in cooperation with the socket (30) is arranged at the top of the inner cavity of the activity groove (31).

8. A wiper drive torque fatigue detection device according to claim 7, characterized in that, A clamping cavity (32) that is communicated with the channel (27) is arranged on the bottom surface of the reset plate (13). A telescopic member (34) is arranged inside the clamping cavity (32) and close to the inner wall surface of the channel (27). An elastic member (33) is installed at the end of the inner wall surface of the clamping cavity (32). The end faces of the telescopic member (34) and the elastic member (33) are both connected with a contact plate (35) that is limited and slides inside the clamping cavity (32). A hole groove is arranged on the contact plate (35). A trapezoidal block (38) that protrudes outwards is arranged on the bottom surface of one reset plate (13). An inclined groove (37) that is slidably fitted with the trapezoidal block (38) is arranged on the surface of one flow blocking plate (20).

9. The wiper drive torque fatigue detection device according to claim 7, characterized in that, A flow-through groove (36) is arranged through the surface of the flow blocking plate (20). A rain outlet (28) that is communicated with the flow-through groove (36) is arranged on the bottom surface of the rainwater box (26).

Images