Device and method for detecting connection stability of automobile wiring harness connector

Abstract

The present invention discloses a device and method for testing the connection stability of automotive wiring harness connectors. The device comprises an endless belt having two symmetrically arranged pothole-drenched road simulation belts fixedly sleeved on its outer wall. The two pothole-drenched road simulation belts are mounted with an automotive simulation mechanism, and several sets of automotive wiring harness connector plug-in testing mechanisms are mounted on the vehicle simulation mechanism. The present invention relates to the field of automotive wiring harness technology. The endless belt drives the pothole-drenched road simulation belts, while an electric push rod and piston cylinder cooperate to flexibly control the bulging state of the rubber belt, accurately simulating various real-world road conditions, including bumpy, stable, and unstable road conditions.

Description

Technical Field

[0001] The present invention relates to the technical field of automobile wiring harnesses, and in particular to a device and method for detecting the connection stability of an automobile wiring harness connector. Background Art

[0002] In the modern automotive industry, automotive wiring harnesses, as a key component of the vehicle's electrical system, carry the crucial functions of power and signal transmission. The stability of their connectors is directly related to the vehicle's safety, reliability, and overall performance. Loose or poor contact in wiring harness connectors can lead to malfunctions in the vehicle's electronic equipment, interrupted signal transmission, and even serious accidents. Therefore, accurate and reliable testing of wiring harness connector stability has become an essential component of automotive production and quality control.

[0003] At present, there are many limitations in the existing methods and devices for detecting the connection stability of automobile wiring harness connectors. Among them, in terms of simulating the actual driving conditions of automobiles, most traditional detection equipment can only provide a single or simple vibration environment, and cannot truly and comprehensively simulate the complex bumpy conditions faced by automobiles when driving under different road conditions. For example, there are many road conditions such as bumpy stability and instability on actual roads, and traditional equipment is difficult to simulate the randomness and complexity of road surface undulations under unstable road conditions, resulting in the inability to effectively detect the connection stability of automobile wiring harness connectors in a close-to-real use environment. The incompleteness of this working condition simulation causes a large deviation between the test results and the actual use conditions, and it is impossible to accurately detect potential problems that may arise in wiring harness connectors under complex road conditions, which in turn affects the overall quality and safety assessment of the car.

[0004] In order to solve the above problems, it is urgent to develop a detection device and method that can more accurately simulate real road conditions, thereby effectively improving the reliability and accuracy of automobile wiring harness connector connection stability detection. Summary of the Invention

[0005] In order to solve the problem that the existing automobile wiring harness connector connection stability detection device is difficult to truly and comprehensively simulate various actual road conditions such as bumpy stability and instability of the automobile, resulting in a large deviation between the detection results and the actual usage and the inability to accurately detect potential problems, the purpose of the present invention is to provide an automobile wiring harness connector connection stability detection device and method.

[0006] To achieve the above-mentioned object, the present invention adopts the following technical solution: a device for detecting the connection stability of an automobile wiring harness connector, comprising an endless belt, wherein two symmetrically arranged pothole road simulation belts are fixedly sleeved on the outer wall of the endless belt, an automobile simulation mechanism is mounted on the two pothole road simulation belts, and a plurality of automobile wiring harness connector plug-in test mechanisms are mounted on the automobile simulation mechanism; the automobile simulation mechanism comprises a carrier, wherein four symmetrically arranged suspension mechanisms are mounted on the bottom of the carrier, and four symmetrically arranged load-bearing mechanisms are mounted on the side walls of the carrier;

[0007] The outer wall of the pothole road simulation strip is provided with a number of evenly arranged grooves, the inner wall at the groove end is fixed with a rubber skin, and the groove is supported by hydraulic oil.

[0008] Preferably, the inner wall of the circulating belt is slidably sleeved with a support block, the support block is fixedly installed, and four symmetrically arranged mounting plates are fixedly installed on the side walls near the two ends. Two driving rollers are engaged with the inner walls at both ends of the circulating belt, and the two ends of the driving roller are rotatably mounted on the two mounting plates through a connecting shaft. A first motor is fixedly installed on the side wall of the mounting plate, and the output end of the first motor is axially connected to one end of the driving roller.

[0009] Preferably, the pothole road simulation belt is made of rubber, and several piston cylinders are fixedly embedded in its side walls, and several electric push rods are also fixedly installed on its side walls; a rectangular hole connected to the piston cylinder is opened at the bottom of the groove, and the telescopic end of the electric push rod is fixedly connected to the piston end of the piston cylinder; the piston cylinder is filled with hydraulic oil for injecting hydraulic oil into the groove.

[0010] Preferably, the suspension mechanism includes a first L-shaped plate fixedly mounted on the bottom of the carrier platform, a movable rod vertically slidingly connected to the bottom of the first L-shaped plate, a rectangular block whose top is fixedly connected to the inner wall of the first L-shaped plate for sliding connection, and a U-shaped frame fixedly connected to its bottom, and a second L-shaped plate slidingly connected to its outer wall above the U-shaped frame, and a first spring sleeved on its outer wall located between the second L-shaped plate and the first L-shaped plate; the two ends of the first spring are respectively pressed against the second L-shaped plate and the first L-shaped plate; a first cylinder is fixedly mounted on the side wall of the U-shaped frame, the telescopic end of the top of the first cylinder is fixedly connected to the side wall of the second L-shaped plate, a roller is rotatably mounted on the inner wall of the U-shaped frame through a pin shaft, and the outer wall of the roller is rollingly connected to the outer wall of the pothole road simulation belt.

[0011] The top of the second supporting plate is fixedly mounted on the support frame, and the supporting plate is fixedly mounted on the support frame.

[0012] Preferably, each set of automobile wiring harness connector plug-in test mechanisms includes two symmetrically arranged automobile wiring harness connector plug-in test mechanisms, which are used to clamp the male and female connectors of the automobile wiring harness respectively; the automobile wiring harness connector plug-in test mechanism includes a rodless cylinder fixedly mounted on the top surface of the carrier, a third L-shaped plate fixedly mounted on the top of the rodless cylinder transmission platform, an electric winder fixedly mounted on the third L-shaped plate, a belt rope for receiving parts in the electric winder, an end of the belt rope away from the electric winder is fixedly connected to a metal block, an end of the metal block away from the belt rope is fixedly connected to a connecting column, one end of the connecting column is provided with a conical groove, the metal block is fixedly mounted on the bottom of the conical groove, the side wall of the third L-shaped plate is fixedly connected with a fixing column, one end of the fixing column is provided with a conical surface, the conical surface is consistent with the conical groove, the outer wall of the fixing column near the end of the conical surface is slidably connected to the inner wall at the end of the conical groove, the belt rope slides through the center of the two ends of the fixing column, and the outer wall of the metal block is slidably connected to the inner wall of the fixed column and the belt rope.

[0013] Preferably, a tension sensor is embedded inside the end face of the connecting column, and the detection end of the tension sensor is fixedly installed with an open groove for placing the wiring harness connector; two symmetrically arranged second cylinders are fixedly installed on both side walls of the open groove, and two rectangular grooves are opened on its two inner side walls, and the inner walls of the rectangular grooves are slidably sleeved with side pressure plates; the telescopic end of the second cylinder is fixedly connected to the side pressure plate, which is used to drive the side pressure plate to be pressed against the side wall of the connector; a number of resistance detection probes are fixedly installed on the inner wall of the open groove opposite to its opening direction.

[0014] A method for detecting the connection stability of an automobile wiring harness connector comprises the following steps:

[0015] Step 1: Install the male and female connectors in each group of automotive wiring harness connector plug-in test mechanisms, and connect the male and female connectors;

[0016] Step 2: The circulating belt runs in a circular motion, and the automobile simulation mechanism simulates driving on a bumpy road.

[0017] Compared with the prior art, the present invention achieves the following beneficial effects:

[0018] 1. The present invention uses a circulating belt to drive the pothole road simulation belt to run, and at the same time uses the cooperation of the electric push rod and the piston cylinder to flexibly control the bulging state of the rubber skin, accurately simulating various real road conditions such as bumpy, stable and unstable.

[0019] 2. The present invention can simulate the driving state of a car under different suspension vibration reduction performance conditions through the vibration reduction adjustment of the suspension mechanism.

[0020] 3. The comprehensive simulation capability of the present invention enables automobile wiring harness connectors to be tested under conditions close to the actual use environment, greatly improving the reliability and practicality of the test results, and effectively avoiding the problem of test result deviation caused by the single working condition simulation of traditional testing.

[0021] 4. The present invention realizes the docking, suspension and tension application operations of the connector through components such as a rodless cylinder and an electric winder, thereby achieving a comprehensive test of the connection stability of the automobile wiring harness connector. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments:

[0023] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0024] Figure 2 A schematic diagram of a partial structure of a pothole road simulation belt according to the present invention;

[0025] Figure 3 It is a structural schematic diagram of the suspension mechanism of the present invention;

[0026] Figure 4 It is a structural schematic diagram of the load-bearing mechanism of the present invention;

[0027] Figure 5 It is a structural schematic diagram of the automobile wiring harness connector plug-in test mechanism of the present invention;

[0028] Figure 6 It is a structural schematic diagram of the fixing column of the present invention;

[0029] Figure 7 It is a structural schematic diagram of the connecting column of the present invention;

[0030] Figure 8 It is a structural schematic diagram of the open slot of the present invention.

[0031] In the figure: 1. Circular belt; 101. Support block; 102. Mounting plate; 103. Driving roller; 104. First motor; 2. Pothole road simulation belt; 201. Groove; 202. Piston cylinder; 203. Electric push rod; 204. Rectangular hole; 205. Rubber skin; 3. Car simulation mechanism; 301. Suspension mechanism; 3011. First L-shaped plate; 3012. Movable rod; 3013. Rectangular block; 3014. U-shaped frame; 3015. Second L-shaped plate; 3016. First spring; 3017. First cylinder; 3018. Roller; 302. Carrier; 5. Load-bearing mechanism; 501. First strip plate; 502. Second strip plate shaped plate; 503, vertical plate; 504, vertical pole; 505, counterweight; 506, lifting rope; 507, collar; 508, first connecting rod; 509, connecting block; 510, connecting disk; 511, second connecting rod; 512, fixed disk; 513, second spring; 4, automobile wiring harness connector plug-in test mechanism; 401, rodless cylinder; 402, third L-shaped plate; 403, electric winder; 404, ribbon rope; 405, metal block; 406, connecting column; 407, conical groove; 408, fixed column; 409, conical surface; 410, open groove; 411, second cylinder; 412, side pressure plate; 413, resistance detection probe. DETAILED DESCRIPTION

[0032] The following describes the implementation of the present invention through specific embodiments. People skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification.

[0033] See also Figures 1 to 8 . It should be noted that the structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the limiting conditions for the implementation of the present invention. Therefore, they have no substantive technical significance. Any modification of the structure, change in the proportional relationship or adjustment of the size should still fall within the scope of the technical content disclosed by the present invention without affecting the efficacy and purpose that can be achieved by the present invention. At the same time, the terms such as "upper", "lower", "left", "right", "middle" and "one" quoted in this specification are only for the convenience of description, and are not used to limit the scope of the implementation of the present invention. Changes or adjustments in their relative relationships should also be regarded as the scope of the implementation of the present invention without substantially changing the technical content.

[0034] The present invention provides a technical solution: a device for detecting the connection stability of automotive wiring harness connectors uses an endless belt 1 as its operating component. A support block 101 is slidably mounted on the inner wall of the endless belt 1, and four mounting plates 102 are symmetrically mounted on the side walls of the support block 101 near both ends. Two drive rollers 103, which engage with the inner walls of the two ends of the endless belt 1, are rotatably mounted on the mounting plates 102 via connecting shafts. The output end of a first motor 104, fixed to the side walls of the mounting plates 102, is axially connected to one end of the drive roller 103. During operation, the first motor 104 drives the drive roller 103 to rotate, and the drive roller 103 engages with the inner wall of the endless belt 1, thereby achieving a circular operation of the endless belt 1 and providing a motion foundation for subsequent vehicle driving simulation.

[0035] The pothole simulation strip 2 is made of rubber, with several grooves 201 evenly spaced on its outer wall. A piston cylinder 202 is fixedly embedded in the side wall, and an electric push rod 203 is installed. A rectangular hole 204 is opened at the bottom of the groove 201, which communicates with the piston cylinder 202. The telescopic end of the electric push rod 203 is fixedly connected to the piston end of the piston cylinder 202. A rubber cover 205 is fixedly sleeved on the inner wall of the groove 201 at the end. Both the groove 201 and the piston cylinder 202 are filled with hydraulic oil.

[0036] When different road conditions need to be simulated, the controller controls the movement of the electric push rods 203. To test the stability of the automotive wiring harness connector connection under stable bumpy conditions, the controller controls all electric push rods 203 to push the hydraulic oil in the piston cylinder 202 into the groove 201 through the rectangular hole 204 with the same stroke, causing each rubber skin 205 to expand and bulge in the same state. To test the stability of the automotive wiring harness connector connection under unstable bumpy conditions, the controller controls each electric push rod 203 to move with different strokes, achieving different swelling states for each rubber skin 205, thereby simulating a realistic and complex pothole-prone road surface.

[0037] The suspension mechanism 301 includes a first L-shaped plate 3011 fixed to the bottom of the carrier 302, the bottom of the first L-shaped plate 3011 slides vertically through the movable rod 3012, the top of the movable rod 3012 is connected to a rectangular block 3013 that is slidably connected to the inner wall of the first L-shaped plate 3011, and the bottom is connected to a U-shaped frame 3014, the outer wall of which slides above the U-shaped frame 3014 and is connected to the second L-shaped plate 3015, and the outer wall located between the second L-shaped plate 3015 and the first L-shaped plate 3011 is sleeved with a first spring 3016, and the two ends of the first spring 3016 are respectively pressed against the second L-shaped plate 3015 and the first L-shaped plate 3011. The first cylinder 3017 is installed on the side wall of the U-shaped frame 3014, and its top telescopic end is fixedly connected to the side wall of the second L-shaped plate 3015. The roller 3018 is rotatably installed on the inner wall of the U-shaped frame 3014 through a pin shaft, and the outer wall of the roller 3018 is rollingly connected to the outer wall of the pothole road simulation belt 2.

[0038] When the load-bearing mechanism 5 is loaded, the first spring 3016 is compressed, and a gap exists between the bottom of the rectangular block 3013 and the inner bottom surface of the first L-shaped plate 3011. When the endless belt 1 drives the pothole simulation belt 2, the roller 3018 rolls on the pothole simulation belt 2. When it encounters a bulge in the rubber skin 205, the movable rod 3012 drives the U-shaped frame 3014 up and down, and the first spring 3016 acts as a buffer to reduce vibration. To test the stability of the automotive wiring harness connector in the case of a suspension with unsatisfactory vibration damping performance, the first cylinder 3017 drives the second L-shaped plate 3015 to compress the first spring 3016 upward, reducing its vibration damping performance.

[0039] The weight-bearing mechanism 5 includes a first strip plate 501 and a second strip plate 502 fixed on the side wall of the support block 101 and arranged up and down. The ends of the two strip plates away from the support block 101 are connected to the vertical plate 503. The top surface of the second strip plate 502 is connected to the vertical rod 504. The outer wall of the vertical rod 504 is slidably sleeved with a counterweight block 505. The top of the counterweight block 505 is connected to a hanging rope 506. The hanging rope 506 slides vertically upward through the first strip plate 501 and is connected to a ring 507 at the top. The inner wall of the ring 507 is rotatably sleeved and fixedly connected to the side wall of the carrier 302. The first connecting rod 508 is hingedly connected to a connecting block 509 at the end away from the platform 302. The end of the connecting block 509 away from the first connecting rod 508 is hingedly connected to a connecting plate 510. A second connecting rod 511, which is slidably connected to the side wall of the vertical plate 503, is rotatably sleeved on the inner wall of a circular groove on one end of the connecting plate 510, acting as a universal joint. The end of the second connecting rod 511 away from the connecting plate 510 is connected to a fixed plate 512, the outer wall of which is sleeved with a second spring 513 that is tightly pressed against the vertical plate 503 and the fixed plate 512. The counterweights 505 are adjustable. By adding or removing the number of counterweights 505, the load on the platform 302 can be adjusted to simulate the state of a car driving under different load conditions.

[0040] Each set of automobile wiring harness connector plug-in test mechanisms 4 comprises two symmetrically arranged parts, which are used to respectively clamp the male and female plug connectors of the automobile wiring harness. Its specific structure is as follows: a rodless cylinder 401 is fixedly installed on the top surface of the carrier 302, a third L-shaped plate 402 is installed on the top of the transmission platform of the rodless cylinder 401, and an electric winder 403 is installed on the third L-shaped plate 402. The electric winder 403 winds up the belt rope 404, and the end of the belt rope 404 away from the electric winder 403 is connected to the metal block 405, and the metal block 405 is connected to the connecting column 406. A conical groove 407 is provided at one end of the connecting column 406, and the metal block 405 is fixed to the bottom of the conical groove 407. The side wall of the third L-shaped plate 402 is fixed with a fixed column 408, and a conical surface 409 is provided at one end of the fixed column 408, which matches the conical groove 407, and the outer wall of the fixed column 408 close to the end of the conical surface 409 is slidably connected to the inner wall at the end of the conical groove 407. A through hole is provided at the center of the end of the fixed column 408, and the inner wall of the through hole is slidably connected to the outer wall of the belt rope 404.

[0041] The inner wall of the through hole is also slidably connected to the outer wall of the metal block 405. When the ribbon rope 404 is reeled in, the ribbon rope 404 pulls the connecting column 406 toward the fixed column 408, and the conical groove 407 is placed on the outer wall of the fixed column 408. The metal block 405 enters the through hole of the fixed column 408 and aligns the open groove 410.

[0042] A tension sensor is embedded inside the end face of the connecting column 406, and an open groove 410 is provided at its detection end. Symmetrical second cylinders 411 are installed on both side walls of the open groove 410. Rectangular grooves are provided on the two inner side walls and are slidably sleeved with side pressure plates 412. The telescopic end of the second cylinder 411 is fixedly connected to the side pressure plate 412, and a number of resistance detection probes 413 are installed on the inner wall of the open groove 410 opposite to its opening direction.

[0043] During the inspection, first, the male and female connectors are respectively installed in the two open slots 410 of each group, and the resistance detection probe 413 is inserted into the terminal of the connector to contact and conduct with the internal terminal, and then the two rodless cylinders 401 of each group drive the two third L-shaped plates 402 to move toward each other, so that the male and female connectors are engaged and docked; then, the two rodless cylinders 401 of each group drive the two third L-shaped plates 402 to move away from each other, and at the same time, the two electric winders 403 synchronously release the ribbon rope 404, the connecting column 406 is separated from the fixed column 408, and the male and female connectors are suspended in the air. After the two electric winders 403 stop releasing, the two rodless cylinders 401 tighten the ribbon rope 404, and the tension sensor monitors the tension data in real time. After reaching the set data, the rodless cylinder 401 stops.

[0044] Implementation process of the detection method:

[0045] After completing the installation and preparation of the above components, follow the steps below to test the connection stability of the vehicle wiring harness connector:

[0046] S1: Precisely place the male and female connectors of the automotive wiring harness into the open slots 410 of each set of automotive wiring harness connector plug-in tester 4, ensuring that the resistance detection probe 413 is accurately inserted into the connector terminal and maintains good contact and continuity with the internal terminals. Subsequently, the controller controls the movement of the two rodless cylinders 401 in each set, driving the two third L-shaped plates 402 toward each other, ensuring smooth engagement and docking of the male and female connectors.

[0047] S2: The controller again controls each group of two rodless cylinders 401 to move the two third L-shaped plates 402 apart. Simultaneously, the two electric winders 403 are activated to synchronously release the ribbon 404. When the connecting post 406 detaches from the fixing post 408, the male and female connectors are suspended in the air, and the electric winders 403 cease their release. Next, the two rodless cylinders 401 begin to tighten the ribbon 404. The tension sensor monitors the tension in real time. When the tension reaches a preset value, the two rodless cylinders 401 cease their operation.

[0048] S3: The controller controls the movement of the electric push rods 203 according to the testing requirements. To test the stability of the automotive wiring harness connector connection under stable bumpy conditions, the controller controls all electric push rods 203 to push the hydraulic oil in the piston cylinder 202 into the groove 201 through the rectangular hole 204 with the same stroke, causing each rubber skin 205 to expand and bulge in the same state. To test the stability of the automotive wiring harness connector connection under unstable bumpy conditions, the controller controls each electric push rod 203 to move with different strokes, achieving different swelling states for each rubber skin 205, thereby simulating a realistic and complex pothole-prone road.

[0049] S4: First motor 104 is activated, transmitting power to endless belt 1 via drive roller 103, causing endless belt 1 to begin circulating. At this point, roller 3018 rolls on pothole-simulating belt 2, the bulging rubber cover 205 simulating a pothole-like surface, and vehicle simulation mechanism 3 simulates a bumpy ride on pothole-simulating belt 2. To test the stability of vehicle wiring harness connectors in the presence of a suspension with suboptimal vibration damping performance, the controller controls first cylinder 3017 to drive second L-shaped plate 3015 upward to compress first spring 3016, reducing its vibration damping performance.

[0050] S5: During the entire testing process, the two corresponding resistance detection probes 413 in each group transmit resistance data to the controller in real time. The controller collects, processes, and analyzes the resistance value between the two corresponding resistance detection probes 413. Based on the analysis results, it is determined that the greater the stability of the resistance value, the stronger the connection stability of the automobile wiring harness connector, thereby completing the connection stability test of the automobile wiring harness connector.

[0051] The above embodiments are merely illustrative of the principles and effects of the present invention and are not intended to limit the present invention. Anyone skilled in the art may modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by one of ordinary skill in the art without departing from the spirit and technical principles disclosed herein are intended to be covered by the claims of the present invention.

Claims

1. A device for detecting the connection stability of an automobile wiring harness connector, comprising a circulating belt (1), characterized in that: The outer wall of the circulating belt (1) is fixedly sleeved with two symmetrically arranged pothole road simulation belts (2), the two pothole road simulation belts (2) are installed with a car simulation mechanism (3), and the car simulation mechanism (3) is installed with a plurality of groups of car wiring harness connector plug-in test mechanisms (4); the car simulation mechanism (3) includes a carrier (302), the bottom of the carrier (302) is installed with four symmetrically arranged suspension mechanisms (301), and the side wall thereof is installed with four symmetrically arranged load-bearing mechanisms (5); the outer wall of the pothole road simulation belt (2) is provided with a plurality of evenly arranged grooves (201), the inner wall of the groove (201) at the end thereof is fixedly sleeved with a rubber skin (205), and the groove (201) is supported by injecting hydraulic oil into the rubber skin (205).

2. The device for detecting the connection stability of an automobile wiring harness connector according to claim 1, characterized in that: The inner wall of the circulating belt (1) is slidably sleeved with a support block (101), the support block (101) is fixedly installed, and four symmetrically arranged mounting plates (102) are fixedly installed on the side walls near the two ends thereof. Two driving rollers (103) are meshed with the inner walls at both ends of the circulating belt (1), and the two ends of the driving roller (103) are rotatably mounted on the two mounting plates (102) via a connecting shaft. A first motor (104) is fixedly installed on the side wall of the mounting plate (102), and the output end of the first motor (104) is axially connected to one end of the driving roller (103).

3. The device for detecting the connection stability of an automobile wiring harness connector according to claim 1, characterized in that: The pothole road simulation belt (2) is made of rubber, and a plurality of piston cylinders (202) are fixedly embedded in its side wall, and a plurality of electric push rods (203) are also fixedly installed on its side wall; a rectangular hole (204) communicating with the piston cylinder (202) is opened at the bottom of the groove (201), and the telescopic end of the electric push rod (203) is fixedly connected to the piston end of the piston cylinder (202); the piston cylinder (202) is filled with hydraulic oil for injecting the hydraulic oil into the groove (201).

4. The device for detecting the connection stability of an automobile wiring harness connector according to claim 1, wherein: The suspension mechanism (301) comprises a first L-shaped plate (3011) fixedly mounted on the bottom of the platform (302), a movable rod (3012) vertically slidingly penetrated at the bottom of the first L-shaped plate (3011), a rectangular block (3013) fixedly connected to the inner wall of the first L-shaped plate (3011) in a sliding manner at the top of the movable rod (3012), a U-shaped frame (3014) fixedly connected at the bottom thereof, a second L-shaped plate (3015) slidingly penetrated at the outer wall thereof above the U-shaped frame (3014), and a second L-shaped plate (3015) slidingly penetrated at the outer wall thereof between the second L-shaped plate (3015) and the first L-shaped plate (3011). 3011) is sleeved with a first spring (3016); the two ends of the first spring (3016) are respectively pressed against the second L-shaped plate (3015) and the first L-shaped plate (3011); a first cylinder (3017) is fixedly mounted on the side wall of the U-shaped frame (3014); the telescopic end at the top of the first cylinder (3017) is fixedly connected to the side wall of the second L-shaped plate (3015); a roller (3018) is rotatably mounted on the inner wall of the U-shaped frame (3014) via a pin shaft, and the outer wall of the roller (3018) is in rolling connection with the outer wall of the pothole road simulation belt (2).

5. The device for detecting the connection stability of an automobile wiring harness connector according to claim 2, wherein: The load-bearing mechanism (5) includes a first strip plate (501) and a second strip plate (502) fixedly mounted on the side wall of the support block (101) and arranged up and down, wherein the ends of the first strip plate (501) and the second strip plate (502) away from the support block (101) are fixedly connected to a vertical plate (503), the top surface of the second strip plate (502) is fixedly connected to a vertical rod (504), the outer wall of the vertical rod (504) is slidably sleeved with a counterweight block (505), the top of the counterweight block (505) is fixedly connected to a hanging rope (506), the hanging rope (506) slides vertically upward through the first strip plate (501), and the top of the hanging rope is fixedly connected to a ring (507); the inner wall of the ring (507) rotates A first connecting rod (508) is sleeved and fixedly connected to the side wall of the carrier (302); the first connecting rod (508) is hingedly connected to a connecting block (509) at one end away from the carrier (302); the connecting block (509) is hingedly connected to a connecting disk (510) at one end away from the first connecting rod (508); a circular groove is provided on one end surface of the connecting disk (510); and a second connecting rod (511) is rotatably sleeved on the inner wall of the circular groove and is slidably connected to the side wall of the vertical plate (503); the second connecting rod (511) is fixedly connected to a fixed disk (512) at one end away from the connecting disk (510); and a second spring (513) is sleeved on the outer wall of the second connecting rod (511) and is pressed tightly against the vertical plate (503) and the fixed disk (512).

6. The device for detecting the connection stability of an automobile wiring harness connector according to claim 1, characterized in that: Each set of automobile wiring harness connector plug-in test mechanisms (4) includes two symmetrically arranged automobile wiring harness connector plug-in test mechanisms (4) for respectively clamping male and female connectors of automobile wiring harnesses; the automobile wiring harness connector plug-in test mechanisms (4) include a rodless cylinder (401) fixedly mounted on the top surface of a carrier (302), a third L-shaped plate (402) fixedly mounted on the top of a transmission platform of the rodless cylinder (401), an electric winder (403) fixedly mounted on the third L-shaped plate (402), a belt rope (404) for receiving components in the electric winder (403), a metal block (405) fixedly connected to one end of the belt rope (404) away from the electric winder (403), and a metal block (405) fixedly connected to one end of the metal block (405) away from the belt rope (404). A connecting column (406) is connected, and a conical groove (407) is provided at one end of the connecting column (406). The metal block (405) is fixedly installed at the bottom of the conical groove (407). A fixing column (408) is fixedly connected to the side wall of the third L-shaped plate (402). A conical surface (409) is provided at one end of the fixing column (408), and the conical surface (409) matches the conical groove (407). The outer wall of the fixing column (408) near the end of the conical surface (409) is slidably connected to the inner wall at the end of the conical groove (407). The belt rope (404) slides through the center of the two ends of the fixing column (408). The outer wall of the metal block (405) is slidably connected to the inner wall of the fixed column (408) and the belt rope (404) at the connection point.

7. The device for detecting the connection stability of an automobile wiring harness connector according to claim 6, characterized in that: A tension sensor is embedded inside the end face of the connecting column (406), and an opening groove (410) is fixedly installed on the detection end of the tension sensor for placing the wiring harness connector; two symmetrically arranged second cylinders (411) are fixedly installed on the two side walls of the opening groove (410), and two rectangular grooves are opened on the two inner side walls thereof, and the inner walls of the rectangular grooves are slidably sleeved with side pressure plates (412); the telescopic end of the second cylinder (411) is fixedly connected to the side pressure plate (412) for driving the side pressure plate (412) to press against the side wall of the connector; a plurality of resistance detection probes (413) are fixedly installed on the inner wall of the opening groove (410) opposite to its opening direction.

8. A method for detecting the connection stability of an automobile wiring harness connector, characterized in that: The device for detecting the connection stability of an automobile wiring harness connector according to any one of claims 1 to 7 comprises the following steps: Step 1: Install the male and female connectors in the automotive wiring harness connector plug-in test mechanism (4) of each group respectively, and connect the male and female connectors; Step 2: The circulating belt (1) is in circular operation, and the automobile simulation mechanism (3) simulates the bumpy driving of the simulation belt (2) on the pothole road.

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