New energy automobile independent suspension fatigue test detection device

Abstract

The invention provides a new energy automobile independent suspension fatigue test detection device, and relates to the field of new energy automobile independent suspensions. The device comprises a mounting base, a pressing device is fixedly connected to the inner side surface of the upper end of the mounting base, a second limiting device is fixedly connected to the output end of the pressing device, and a suspension assembly is mounted at the lower end of the second limiting device. The shock absorber is rapidly limited through a moving block arranged in the second limiting device, meanwhile, the shock absorber is further clamped through the lever principle when the first sliding circular plate moves backwards through the arrangement of the first sliding circular plate, limiting of the shock absorber is conveniently relieved through the arrangement of the second sliding circular plate, and the detection efficiency is improved; through arrangement of the first limiting device, when the limiting sleeve is pressed, the limiting sleeve is rapidly limited, the detection efficiency is improved, rotation measurement of the simulation rotating wheel simulates road driving of an automobile, and provided measurement data are more accurate.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of new energy vehicle independent suspension, in particular to a new energy vehicle independent suspension fatigue test detection device. BACKGROUND

[0002] The independent suspension system of the new energy vehicle is an important part of vehicle design, and the independent suspension means that each wheel of the vehicle can be independently connected with the vehicle body, allowing each wheel to move independently under different road conditions, avoiding interference between the wheels, and compared with the traditional non-independent suspension (such as beam type), the independent suspension can effectively reduce the force transmission and influence between the wheels, and the independent suspension design is widely used in modern new energy vehicles, which provides higher driving stability and comfort compared with the traditional suspension system.

[0003] The new energy vehicle independent suspension fatigue test aims to simulate the repeated load that the suspension system may encounter in long-term use, detect the strength and performance degradation under repeated load, and ensure that the suspension system will not fail within the normal use cycle, the existing test equipment changes the up-down movement of the wheel to drive the suspension for testing, and changes the amplitude of the up-down movement of the wheel to test the independent suspension with different variables, but the wheel does not simulate the rotation when driving on the road, only moves up and down, the repeated action of the wheel bearing and the suspension force relative rotation is not considered, and the suspension test installation is also relatively troublesome. SUMMARY

[0004] (I) Technical problems solved

[0005] In view of the defects of the prior art, the present application provides a new energy vehicle independent suspension fatigue test detection device, which solves the problem of not considering the repeated rotation of the wheel bearing and the suspension force and the trouble of installation.

[0006] (II) Technical solutions

[0007] In order to achieve the above purpose, the present application is realized by the following technical solutions: a new energy vehicle independent suspension fatigue test detection device, comprising a mounting seat, the inner surface of the upper end of the mounting seat is fixedly connected with a pressing device, the output end of the pressing device is fixedly connected with a second limiting device, the lower end of the second limiting device is provided with a suspension assembly, the front end of the mounting seat and the position close to the suspension assembly are fixedly connected with a first limiting device, the upper surface in the mounting seat is provided with a replacement device, the inner surface of the replacement device is provided with a test device, and the right end of the mounting seat is provided with a replacement wheel.

[0008] Preferably, the suspension assembly comprises a wheel, a lower suspension, a shock absorber, an upper suspension and a limiting sleeve, the limiting sleeve is fixedly connected to the rear end of the lower suspension, the front end of the lower suspension is movably connected to the inner side surface of the wheel, the upper suspension is fixedly connected to the inner side surface of the wheel, the lower end of the shock absorber is movably connected to the inner side surface of the upper suspension, and the upper end of the shock absorber is mounted to the inner side surface of the second limiting device.

[0009] Preferably, the second limiting device comprises a limiting cylinder, a moving block, a fourth spring, a fourth sliding rod, a sliding long rod, a limiting pin, a first sliding circular plate, a second sliding circular plate, a fifth spring, a fifth sliding rod, a first inclined block, a second inclined block, a limiting support and a third inclined block, the upper end of the limiting cylinder is fixedly connected to the output end of the pressing device, one end of the fourth sliding rod is fixedly connected to the front side surface of the moving block, the other end of the fourth sliding rod is slidingly connected to the inner side surface of the limiting cylinder, the fourth spring is sleeved on the side surface of the fourth sliding rod, one end of the fourth spring is fixedly connected to the front side surface of the moving block, the other end of the fourth spring is fixedly connected to the inner side surface of the limiting cylinder, the moving block is provided in plurality and is slidingly connected to the inner side surface of the limiting cylinder through the fourth spring, the lower end of the sliding long rod is fixedly connected to the upper end of the moving block, the first inclined block is fixedly connected to the middle section of the sliding long rod and faces the inner side of the limiting cylinder, the second inclined block is fixedly connected to the upper end of the sliding long rod and faces the outer side of the limiting cylinder, the shock absorber is clamped between the moving blocks, the limiting pin is fixedly connected to the inner side surface of the sliding long rod, the sliding long rod is movably connected to the inner side surface of the limiting cylinder through the limiting pin, the first sliding circular plate is slidingly connected to the inner side surface of the limiting cylinder, the fifth sliding rod is fixedly connected to the upper end of the first sliding circular plate, the fifth spring is sleeved on the side surface of the fifth sliding rod, the upper end and the lower end of the fifth spring are fixedly connected to the lower end of the second sliding circular plate and the upper end of the first sliding circular plate, respectively, the second sliding circular plate is slidingly connected to the inner side surface of the limiting cylinder, the limiting support is fixedly connected to the side surface of the second sliding circular plate, the side surface of the second sliding circular plate is fixedly connected with a pull plate penetrating through the limiting cylinder, the inclined surface on the second inclined block is in contact with a rolling wheel arranged inside the limiting support, and the third inclined block is fixedly connected to the rear side surface of the sliding long rod and located at the position of the lower end of the limiting pin.

[0010] Preferably, the first limiting device comprises a U-shaped sliding rod, a pulling rod, a sliding assembly, a pressing assembly and a fixed long plate, the fixed long plate is fixedly connected to the inner front side surface of the mounting seat, the U-shaped sliding rod is slidingly connected to the inner side surface of the fixed long plate, the pulling rod is fixedly connected to the right side surface of the U-shaped sliding rod, the sliding assembly is arranged on the inner side surface of the U-shaped sliding rod, and the pressing assembly is arranged on the inner side surface of the fixed long plate and located at the lower end of the sliding assembly.

[0011] Preferably, the sliding assembly comprises a second sliding rod, a fixed sleeve, a second spring and a limiting slope block, the second sliding rod is fixedly connected to the inner side surface of the U-shaped sliding rod, the fixed sleeve is fixedly connected to the side surface of the second sliding rod, the second spring is sleeved on the side surface of the second sliding rod, the left end of the second spring is fixedly connected to the right side surface of the fixed sleeve, the right end of the second spring is fixedly connected to the inner side surface of the fixed long plate, and the limiting slope block is fixedly connected to the lower end of the fixed sleeve.

[0012] Preferably, the pressing-down assembly comprises a sliding plate, a third sliding rod, a third spring and a sliding limiting strip, the sliding plate is slidingly connected to the inner side surface of the fixed long plate, the upper end of the third sliding rod is fixedly connected to the lower side surface of the sliding plate, the lower end of the third sliding rod is slidingly connected to the inner side surface of the fixed long plate, the upper end of the third spring is sleeved on the side surface of the third sliding rod, the upper end of the third spring is fixedly connected to the lower side surface of the sliding plate, the lower end of the third spring is fixedly connected to the inner side surface of the fixed long plate, the left end of the sliding limiting strip is fixedly connected to the right end of the sliding plate, and the limiting slope block and the sliding limiting strip correspond to each other.

[0013] Preferably, the changing device comprises a first electric push rod, a guide rod, a moving support, a first limiting plate, a second limiting plate and a second electric push rod, the first electric push rod is fixedly connected to the inner side lower surface of the mounting seat, the lower end of the guide rod is fixedly connected to the inner side lower surface of the mounting seat, the moving support is slidingly connected to the side surface of the guide rod, the output end of the first electric push rod is fixedly connected to the lower side surface of the moving support, the first limiting plate is slidingly connected to the inner side surface of the moving support, the second electric push rod is fixedly connected to the inner side surface of the moving support, the output end of the second electric push rod is fixedly connected to the lower side surface of the first limiting plate, one end of the second limiting plate is hingedly connected to the upper side surface of the first limiting plate, the other end of the second limiting plate is buckled on the upper surface of the first limiting plate, and the inner sides of the second limiting plate and the first limiting plate are movably connected with auxiliary wheels.

[0014] Preferably, the test device comprises a hand wheel, an analog rotating wheel, a motor, an obstacle strip, a moving nest, a fixed column, a lead screw, a roller, a limiting assembly and a limiting column, the lower end of the limiting column is fixedly connected to the upper surface of the moving support, the motor is fixedly connected to the inner side surface of the limiting column, the analog rotating wheel is fixedly connected to the output end of the motor, the obstacle strip is slidingly connected to the inner side surface of the analog rotating wheel, the limiting assembly is respectively installed on the two side surfaces of the obstacle strip, the rear end of the fixed column is fixedly connected to the inner side surface of the analog rotating wheel, the rear end of the lead screw is rotatably connected to the front side surface of the fixed column, the hand wheel is fixedly connected to the front end of the lead screw, the moving nest is threadedly connected to the surface of the lead screw, the moving nest is slidingly connected to the inner side surface of the analog rotating wheel through a sliding bar, and the moving nest is slidingly connected to the side surface of the fixed column.

[0015] Preferably, the limiting assembly comprises a first sliding rod, a fixed plate and a first spring, the fixed plate is fixedly connected to the side surface of the obstacle strip, the first sliding rod is fixedly connected to the inner side surface of the analog rotating wheel, the first spring is sleeved on the side surface of the first sliding rod, one end of the first sliding rod is fixedly connected to the side surface of the fixed plate, and the other end of the first spring is fixedly connected to the inner side surface of the analog rotating wheel.

[0016] (Three) beneficial effects

[0017] The application provides a new energy automobile independent suspension fatigue test detection device.

[0018] 1. The moving block in the second limiting device quickly limits the shock absorber, the first sliding circular plate is provided, and when the first sliding circular plate moves backward, the shock absorber is further clamped through the lever principle, and the second sliding circular plate is provided to conveniently release the limiting of the shock absorber, thereby improving the detection efficiency.

[0019] 2. The limiting sleeve in the first limiting device is quickly limited when being pressed, thereby improving the detection efficiency.

[0020] 3. The test device is provided with a wheel replacement device, a plurality of detection modes are provided for the suspension assembly, the rotation of the analog rotating wheel measures the simulation of automobile road driving, and the measurement data provided is more accurate. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 It is a whole structure schematic view of the new energy automobile independent suspension fatigue test detection device.

[0022] Figure 2Part structure schematic view of a new energy automobile independent suspension fatigue test detection device provided by the application;

[0023] Figure 3 Suspension assembly structure schematic view of a new energy automobile independent suspension fatigue test detection device provided by the application;

[0024] Figure 4 Second limiting device structure schematic view of a new energy automobile independent suspension fatigue test detection device provided by the application;

[0025] Figure 5 A new energy automobile independent suspension fatigue test detection device provided by the application Figure 4 Enlarged view of B part in the application

[0026] Figure 6 Second limiting device part structure schematic view of a new energy automobile independent suspension fatigue test detection device provided by the application

[0027] Figure 7 First limiting device structure schematic view of a new energy automobile independent suspension fatigue test detection device provided by the application

[0028] Figure 8 Sliding assembly structure schematic view of a new energy automobile independent suspension fatigue test detection device provided by the application

[0029] Figure 9 Replacement device structure schematic view of a new energy automobile independent suspension fatigue test detection device provided by the application

[0030] Figure 10 Test device structure schematic view of a new energy automobile independent suspension fatigue test detection device provided by the application

[0031] Figure 11 Test device internal structure schematic view of a new energy automobile independent suspension fatigue test detection device provided by the application

[0032] Figure 12 Test device structure schematic view of a new energy automobile independent suspension fatigue test detection device provided by the application

[0033] Figure 13 Limiting assembly structure schematic view of a new energy automobile independent suspension fatigue test detection device provided by the application

[0034] Figure 14 Enlarged view of A part in the application Figure 11

[0035] Figure 15 ​The application provides a replacement wheel structure diagram of a new energy vehicle independent suspension fatigue test detection device.

[0036] Wherein, 1, mounting seat; 2, replacement device; 201, first electric push rod; 202, guide rod; 203, moving support; 204, first limiting plate; 205, second limiting plate; 206, second electric push rod; 3, test device; 301, hand wheel; 302, simulation rotating wheel; 303, motor; 304, obstacle strip; 305, moving nest; 306, fixed column; 307, screw rod; 308, roller; 309, limiting assembly; 30901, first sliding rod; 30902, fixed plate; 30903, first spring; 310, limiting vertical column; 4, replacement wheel; 5, suspension assembly; 501, wheel; 502, lower suspension; 503, shock absorber; 504, upper suspension; 505, limiting sleeve; 6, first limiting device; 601, U-shaped sliding rod; 602, pulling rod; 603, sliding assembly; 60301, second sliding rod; 60302, fixed sleeve; 60303, second spring; 60304, limiting inclined block; 604, pressing assembly; 60401, sliding plate; 60402, third sliding rod; 60403, third spring; 60404, sliding limiting strip; 605, fixed long plate; 7, second limiting device; 701, limiting cylinder; 702, moving block; 703, fourth spring; 704, fourth sliding rod; 705, sliding long rod; 706, limiting pin; 707, first sliding circular plate; 708, second sliding circular plate; 709, fifth spring; 710, fifth sliding rod; 711, first inclined block; 712, second inclined block; 713, limiting support; 714, third inclined block; 8, pressing equipment. DETAILED DESCRIPTION

[0037] The technical solutions in the embodiments of the application will be clearly and completely described below with reference to the drawings in the embodiments of the application. Obviously, the described embodiments are only part of the embodiments of the application, rather than all the embodiments of the application. Based on the embodiments in the application, all other embodiments obtained by a person of ordinary skill in the art without creative work fall within the protection scope of the application.

[0038] Embodiment one:

[0039] As Figures 1-15As shown, the embodiment of the present application provides a new energy vehicle independent suspension fatigue test detection device, which comprises a mounting seat 1, the inner side surface of the upper end of the mounting seat 1 is fixedly connected with a pressing device 8, the output end of the pressing device 8 is fixedly connected with a second limiting device 7, the lower end of the second limiting device 7 is provided with a suspension assembly 5, the front end of the mounting seat 1 and the position close to the suspension assembly 5 are fixedly connected with a first limiting device 6, the upper surface in the mounting seat 1 is provided with a replacement device 2, the inner side surface of the replacement device 2 is provided with a test device 3, and the right end of the mounting seat 1 is provided with a replacement wheel 4.

[0040] The replacement wheel 4 with multiple different surfaces can be used to replace the different road surfaces for experiment, and the pressing device 8 is an existing device used to provide a certain pressure of the weight of the automobile for the first limiting device 6.

[0041] The suspension assembly 5 comprises a wheel 501, a lower suspension 502, a shock absorber 503, an upper suspension 504 and a limiting sleeve 505, the limiting sleeve 505 is fixedly connected to the rear end of the lower suspension 502, the front end of the lower suspension 502 is movably connected to the inner side surface of the wheel 501, the upper suspension 504 is fixedly connected to the inner side surface of the wheel 501, the lower end of the shock absorber 503 is movably connected to the inner side surface of the upper suspension 504, and the upper end of the shock absorber 503 is installed on the inner side surface of the second limiting device 7.

[0042] The shock absorber 503, the wheel 501 and the lower suspension 502 are existing structures, the connection between the upper suspension 504 and the lower suspension 502 in the wheel 501 is a goat horn structure and does not rotate when the wheel 501 rotates,

[0043] The second limiting device 7 comprises a limiting cylinder 701, a moving block 702, a fourth spring 703, a fourth sliding rod 704, a sliding long rod 705, a limiting pin 706, a first sliding circular plate 707, a second sliding circular plate 708, a fifth spring 709, a fifth sliding rod 710, a first inclined block 711, a second inclined block 712, a limiting support 713 and a third inclined block 714, the upper end of the limiting cylinder 701 is fixedly connected to the output end of the pressing device 8, one end of the fourth sliding rod 704 is fixedly connected to the front side surface of the moving block 702, the other end of the fourth sliding rod 704 is slidingly connected to the inner side surface of the limiting cylinder 701, the fourth spring 703 is sleeved on the side surface of the fourth sliding rod 704, one end of the fourth spring 703 is fixedly connected to the front side surface of the moving block 702, the other end of the fourth spring 703 is fixedly connected to the inner side surface of the limiting cylinder 701, the moving block 702 is provided with a plurality of moving blocks 702 and is slidingly connected to the inner side surface of the limiting cylinder 701 through the fourth spring 703, the lower end of the sliding long rod 705 is fixedly connected to the upper end of the moving block 702, the first inclined block 711 is fixedly connected to the middle section of the sliding long rod 705 and faces the inner side of the limiting cylinder 701, the second inclined block 712 is fixedly connected to the upper end of the sliding long rod 705 and faces the outer side of the limiting cylinder 701, the shock absorber 503 is clamped between the moving blocks 702, the limiting pin 706 is fixedly connected to the inner side surface of the sliding long rod 705, the sliding long rod 705 is movably connected to the inner side surface of the limiting cylinder 701 through the limiting pin 706, the first sliding circular plate 707 is slidingly connected to the inner side surface of the limiting cylinder 701, the fifth sliding rod 710 is fixedly connected to the upper end of the first sliding circular plate 707, the fifth spring 709 is sleeved on the side surface of the fifth sliding rod 710, the upper end and the lower end of the fifth spring 709 are fixedly connected to the lower end of the second sliding circular plate 708 and the upper end of the first sliding circular plate 707 respectively, the second sliding circular plate 708 is slidingly connected to the inner side surface of the limiting cylinder 701, the limiting support 713 is fixedly connected to the side surface of the second sliding circular plate 708, the side surface of the second sliding circular plate 708 is fixedly connected with a pull plate penetrating through the limiting cylinder 701, the inclined surface on the second inclined block 712 is in contact with the rolling wheels arranged in the limiting support 713, and the third inclined block 714 is fixedly connected to the rear side surface of the sliding long rod 705 and is located at the position of the lower end of the limiting pin 706.

[0044] The space in the limiting cylinder 701 and at the position of the fourth sliding rod 704 is large, so that the lever movement of the moving block 702 driven by the first inclined block 711 will not be hindered, the space for the moving block 702 to slide in the limiting cylinder 701 is large, so that the moving block 702 will not be stuck in the limiting cylinder 701 when the moving block 702 is moved by the lever of the sliding long rod 705, and the fourth sliding rod 704 also has corresponding lever movement space in the limiting cylinder 701, and the position of the fourth spring 703 limiting the shock absorber 503 can be provided with anti-skid rubber.

[0045] The first limiting device 6 comprises a U-shaped slide rod 601, a pulling rod 602, a sliding assembly 603, a pressing-down assembly 604 and a fixed long plate 605. The fixed long plate 605 is fixedly connected to the inner front surface of the mounting base 1. The U-shaped slide rod 601 is slidingly connected to the inner side surface of the fixed long plate 605. The pulling rod 602 is fixedly connected to the right side surface of the U-shaped slide rod 601. The sliding assembly 603 is arranged on the inner side surface of the U-shaped slide rod 601. The pressing-down assembly 604 is arranged on the inner side surface of the fixed long plate 605 and located at the lower end of the sliding assembly 603.

[0046] The sliding assembly 603 comprises a second slide rod 60301, a fixed sleeve 60302, a second spring 60303 and a limiting inclined block 60304. The second slide rod 60301 is fixedly connected to the inner side surface of the U-shaped slide rod 601. The fixed sleeve 60302 is fixedly connected to the side surface of the second slide rod 60301. The second spring 60303 is sleeved on the side surface of the second slide rod 60301. The left end of the second spring 60303 is fixedly connected to the right side surface of the fixed sleeve 60302. The right end of the second spring 60303 is fixedly connected to the inner side surface of the fixed long plate 605. The limiting inclined block 60304 is fixedly connected to the lower end of the fixed sleeve 60302.

[0047] The pressing-down assembly 604 comprises a sliding plate 60401, a third slide rod 60402, a third spring 60403 and a sliding limiting strip 60404. The sliding plate 60401 is slidingly connected to the inner side surface of the fixed long plate 605. The upper end of the third slide rod 60402 is fixedly connected to the lower side surface of the sliding plate 60401. The lower end of the third slide rod 60402 is slidingly connected to the inner side surface of the fixed long plate 605. The upper end of the third spring 60403 is sleeved on the side surface of the third slide rod 60402. The upper end of the third spring 60403 is fixedly connected to the lower side surface of the sliding plate 60401. The lower end of the third spring 60403 is fixedly connected to the inner side surface of the fixed long plate 605. The left end of the sliding limiting strip 60404 is fixedly connected to the right end of the sliding plate 60401. The limiting inclined block 60304 and the sliding limiting strip 60404 correspond to each other.

[0048] When the sliding plate 60401 is pressed down, the sliding limiting strip 60404 can be synchronously pressed down, so as to release the limitation on the second slide rod 60301.

[0049] The replacement device 2 comprises a first electric push rod 201, a guide rod 202, a moving bracket 203, a first limiting plate 204, a second limiting plate 205 and a second electric push rod 206, the first electric push rod 201 is fixedly connected to the inner lower surface of the mounting seat 1, the lower end of the guide rod 202 is fixedly connected to the inner lower surface of the mounting seat 1, the moving bracket 203 is slidingly connected to the side surface of the guide rod 202, the output end of the first electric push rod 201 is fixedly connected to the lower side surface of the moving bracket 203, the first limiting plate 204 is slidingly connected to the inner side surface of the moving bracket 203, the second electric push rod 206 is fixedly connected to the inner side surface of the moving bracket 203, the output end of the second electric push rod 206 is fixedly connected to the lower side surface of the first limiting plate 204, one end of the second limiting plate 205 is hingedly connected to the upper side surface of the first limiting plate 204, the other end of the second limiting plate 205 is buckled to the upper surface of the first limiting plate 204, and the inner sides of the second limiting plate 205 and the first limiting plate 204 are movably connected with auxiliary wheels.

[0050] The auxiliary wheels are provided with two in the first limiting plate 204 and the second limiting plate 205 to assist the rotation of the simulation rotating wheel 302.

[0051] The test device 3 comprises a hand wheel 301, a simulation rotating wheel 302, a motor 303, an obstacle strip 304, a moving nest 305, a fixed column 306, a lead screw 307, a roller 308, a limiting assembly 309 and a limiting column 310, the lower end of the limiting column 310 is fixedly connected to the upper surface of the moving bracket 203, the motor 303 is fixedly connected to the inner side surface of the limiting column 310, the simulation rotating wheel 302 is fixedly connected to the output end of the motor 303, the obstacle strip 304 is slidingly connected to the inner side surface of the simulation rotating wheel 302, the limiting assembly 309 is respectively installed on the two side surfaces of the obstacle strip 304, the rear end of the fixed column 306 is fixedly connected to the inner side surface of the simulation rotating wheel 302, the rear end of the lead screw 307 is rotatably connected to the front side surface of the fixed column 306, the hand wheel 301 is fixedly connected to the front end of the lead screw 307, the moving nest 305 is threadedly connected to the surface of the lead screw 307, the moving nest 305 is slidingly connected to the inner side surface of the simulation rotating wheel 302 through a slide strip, the moving nest 305 is slidingly connected to the side surface of the fixed column 306, and the roller 308 is rotatably connected to the inner side surface of the obstacle strip 304.

[0052] The limiting assembly 309 comprises a first sliding rod 30901, a fixed plate 30902 and a first spring 30903. The fixed plate 30902 is fixedly connected to the side surface of the blocking strip 304. The first sliding rod 30901 is fixedly connected to the inner side surface of the simulation rotating wheel 302. The first spring 30903 is sleeved on the side surface of the first sliding rod 30901. One end of the first sliding rod 30901 is fixedly connected to the side surface of the fixed plate 30902. The other end of the first spring 30903 is fixedly connected to the inner side surface of the simulation rotating wheel 302.

[0053] Working principle: first, place the upper suspension 504 on the U-shaped sliding rod 601, then insert the upper end of the shock absorber 503 into the limiting cylinder 701, the upper end of the shock absorber 503 contacts the lower end of the first sliding circular plate 707, the first sliding circular plate 707 is pushed upwards, then the first sliding circular plate 707 moves out of the third inclined block 714, releasing the limiting of the moving block 702, the moving block 702 moves to the inside of the limiting cylinder 701 under the action of the fourth spring 703, clamping the shock absorber 503, then place the wheel 501 on the surface of the simulation rotating wheel 302, then place the limiting sleeve 505 in the groove of the fixed long plate 605 and press downwards, the limiting sleeve 505 contacts the sliding plate 60401 after being pressed downwards, and continues to be pressed downwards, thereby driving the sliding limiting strip 60404 to move downwards and releasing the limiting of the fixed sleeve 60302, after releasing the limiting of the fixed sleeve 60302, the second sliding rod 60301 moves into and penetrates into the hole of the limiting sleeve 505 under the action of the second spring 60303, limiting the limiting sleeve 505, then start the downward pressing device 8 to drive the second limiting device 7 to move downwards to provide a certain pressure to simulate the weight of the car, then start the motor 303 to drive the simulation rotating wheel 302 to rotate, thereby driving the wheel 501 in contact to rotate to simulate the rotation of the wheel 501 when the vehicle moves, and the simulation rotating wheel 302 rotates to play the role of road surface shaking slope on the wheel 501 through the blocking strip 304;

[0054] After the test is completed, manually pull the pulling rod 602 to move the second sliding rod 60301 backwards until the fixed sleeve 60302 moves to the right end of the sliding limiting strip 60404, thereby limiting the fixed sleeve 60302, facilitating the removal of the lower suspension 502, then pull the pull plate outside the second sliding circular plate 708 downwards to drive the first inclined block 711 to move inwards through the limiting support 713 and the second inclined block 712, thereby releasing the limiting of the shock absorber 503, and at the same time driving the first sliding circular plate 707 to move downwards, stopping when the first sliding circular plate 707 moves to the position of the third inclined block 714, the sliding long rod 705 is limited, the shock absorber 503 can be smoothly removed, and then the suspension assembly 5 is removed, a new suspension assembly 5 is replaced for testing;

[0055] When the wheel 501 needs to be enhanced, the hand wheel 301 drives the screw rod 307 to rotate, and then the screw rod 307 drives the moving nest 305 to move towards the fixed column 306, and at the same time, the blocking strip 304 is moved to the surface of the moving nest 305 through the inclined surface on the roller 308 and the moving nest 305, so as to move the blocking strip 304 outward by a part and be limited by the limiting assembly 309 to prevent excessive protrusion;

[0056] When the sandstone road surface needs to be simulated, the moving nest 305 can be moved back to the original position, then the second limiting plate 205 is opened by the buckle, and the first limiting plate 204 is driven downward by the second electric push rod 206 to provide a certain space, at the same time, the moving support 203 is driven downward by the first electric push rod 201 to facilitate the installation and replacement of the wheel 4, then the replacement wheel 4 is installed on the surface of the simulation rotating wheel 302, then the moving support 203 and the first limiting plate 204 are moved to the original position by the first electric push rod 201 and the second electric push rod 206, then the second limiting plate 205 is closed and the moving support 203 is started for testing.

[0057] Although the embodiments of the present application have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and modifications can be made to the embodiments without departing from the principles and spirits of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A new energy vehicle independent suspension fatigue test detection device, comprising a mounting seat (1), characterized in that: The inner side surface of the upper end of the mounting seat (1) is fixedly connected with a pressing device (8), the output end of the pressing device (8) is fixedly connected with a second limiting device (7), the lower end of the second limiting device (7) is provided with a suspension assembly (5), the front end of the mounting seat (1) is fixedly connected with a first limiting device (6) near the suspension assembly (5), the upper surface in the mounting seat (1) is provided with a replacing device (2), the inner side surface of the replacing device (2) is provided with a testing device (3), and the right end of the mounting seat (1) is provided with a replacing wheel (4).

2. The new energy vehicle independent suspension fatigue test detection device according to claim 1, characterized in that: The suspension assembly (5) comprises a wheel (501), a lower suspension (502), a shock absorber (503), an upper suspension (504) and a limiting sleeve (505), the limiting sleeve (505) is fixedly connected to the rear end of the lower suspension (502), the front end of the lower suspension (502) is movably connected to the inner side surface of the wheel (501), the upper suspension (504) is fixedly connected to the inner side surface of the wheel (501), the lower end of the shock absorber (503) is movably connected to the inner side surface of the upper suspension (504), and the upper end of the shock absorber (503) is installed on the inner side surface of the second limiting device (7).

3. The new energy vehicle independent suspension fatigue test detection device according to claim 2, characterized in that: The second limiting device (7) comprises a limiting cylinder (701), a moving block (702), a fourth spring (703), a fourth sliding rod (704), a sliding long rod (705), a limiting pin (706), a first sliding circular plate (707), a second sliding circular plate (708), a fifth spring (709), a fifth sliding rod (710), a first inclined block (711), a second inclined block (712), a limiting support (713) and a third inclined block (714), the upper end of the limiting cylinder (701) is fixedly connected to the output end of the pressing device (8), one end of the fourth sliding rod (704) is fixedly connected to the front side surface of the moving block (702), the other end of the fourth sliding rod (704) is slidingly connected to the inner side surface of the limiting cylinder (701), the fourth spring (703) is sleeved on the side surface of the fourth sliding rod (704), one end of the fourth spring (703) is fixedly connected to the front side surface of the moving block (702), the other end of the fourth spring (703) is fixedly connected to the inner side surface of the limiting cylinder (701), a plurality of the moving blocks (702) are arranged and slidingly connected to the inner side surface of the limiting cylinder (701) through the fourth spring (703), the lower end of the sliding long rod (705) is fixedly connected to the upper end of the moving block (702), the first inclined block (711) is fixedly connected to the middle section of the sliding long rod (705) and faces the inner side of the limiting cylinder (701), the second inclined block (712) is fixedly connected to the upper end of the sliding long rod (705) and faces the outer side of the limiting cylinder (701), the shock absorber (503) is clamped between the moving blocks (702), the limiting pin (706) is fixedly connected to the inner side surface of the sliding long rod (705), the sliding long rod (705) is movably connected to the inner side surface of the limiting cylinder (701) through the limiting pin (706), the first sliding circular plate (707) is slidingly connected to the inner side surface of the limiting cylinder (701), the fifth sliding rod (710) is fixedly connected to the upper end of the first sliding circular plate (707), the fifth spring (709) is sleeved on the side surface of the fifth sliding rod (710), the upper end and the lower end of the fifth spring (709) are fixedly connected to the lower end of the second sliding circular plate (708) and the upper end of the first sliding circular plate (707) respectively, the second sliding circular plate (708) is slidingly connected to the inner side surface of the limiting cylinder (701), the limiting support (713) is fixedly connected to the side surface of the second sliding circular plate (708), the side surface of the second sliding circular plate (708) is fixedly connected with a pull plate penetrating through the limiting cylinder (701), the inclined surface on the second inclined block (712) is in contact with the rolling wheels arranged in the limiting support (713), and the third inclined block (714) is fixedly connected to the rear side surface of the sliding long rod (705) and located at the position of the lower end of the limiting pin (706).

4. The new energy vehicle independent suspension fatigue test detection device according to claim 1, characterized in that: The first limiting device (6) comprises a U-shaped slide rod (601), a pulling rod (602), a sliding assembly (603), a pressing-down assembly (604) and a fixed long plate (605), the fixed long plate (605) is fixedly connected to the inner front surface of the mounting seat (1), the U-shaped slide rod (601) is slidingly connected to the inner surface of the fixed long plate (605), the pulling rod (602) is fixedly connected to the right surface of the U-shaped slide rod (601), the sliding assembly (603) is arranged on the inner surface of the U-shaped slide rod (601), and the pressing-down assembly (604) is arranged on the inner surface of the fixed long plate (605) and located at the lower end of the sliding assembly (603).

5. The new energy vehicle independent suspension fatigue test detection device according to claim 4, characterized in that: The sliding assembly (603) comprises a second slide rod (60301), a fixed sleeve (60302), a second spring (60303) and a limiting inclined block (60304), the second slide rod (60301) is fixedly connected to the inner surface of the U-shaped slide rod (601), the fixed sleeve (60302) is fixedly connected to the side surface of the second slide rod (60301), the second spring (60303) is sleeved on the side surface of the second slide rod (60301), the left end of the second spring (60303) is fixedly connected to the right surface of the fixed sleeve (60302), the right end of the second spring (60303) is fixedly connected to the inner surface of the fixed long plate (605), and the limiting inclined block (60304) is fixedly connected to the lower end of the fixed sleeve (60302).

6. The new energy vehicle independent suspension fatigue test detection device according to claim 5, characterized in that: The pressing-down assembly (604) comprises a sliding plate (60401), a third slide rod (60402), a third spring (60403) and a sliding limiting strip (60404), the sliding plate (60401) is slidingly connected to the inner surface of the fixed long plate (605), the upper end of the third slide rod (60402) is fixedly connected to the lower surface of the sliding plate (60401), the lower end of the third slide rod (60402) is slidingly connected to the inner surface of the fixed long plate (605), the upper end of the third spring (60403) is sleeved on the side surface of the third slide rod (60402), the upper end of the third spring (60403) is fixedly connected to the lower surface of the sliding plate (60401), the lower end of the third spring (60403) is fixedly connected to the inner surface of the fixed long plate (605), the left end of the sliding limiting strip (60404) is fixedly connected to the right end of the sliding plate (60401), and the limiting inclined block (60304) and the sliding limiting strip (60404) correspond to each other.

7. The new energy vehicle independent suspension fatigue test detection device according to claim 1, characterized in that: The replacement device (2) comprises a first electric push rod (201), a guide rod (202), a moving support (203), a first limiting plate (204), a second limiting plate (205) and a second electric push rod (206), the first electric push rod (201) is fixedly connected to the inner lower surface of the mounting seat (1), the lower end of the guide rod (202) is fixedly connected to the inner lower surface of the mounting seat (1), the moving support (203) is slidingly connected to the side surface of the guide rod (202), the output end of the first electric push rod (201) is fixedly connected to the lower side surface of the moving support (203), the first limiting plate (204) is slidingly connected to the inner side surface of the moving support (203), the second electric push rod (206) is fixedly connected to the inner side surface of the moving support (203), the output end of the second electric push rod (206) is fixedly connected to the lower side surface of the first limiting plate (204), one end of the second limiting plate (205) is hingedly connected to the upper side surface of the first limiting plate (204), the other end of the second limiting plate (205) is buckled to the upper surface of the first limiting plate (204), and the inner sides of the second limiting plate (205) and the first limiting plate (204) are movably connected with auxiliary wheels.

8. The new energy vehicle independent suspension fatigue test detection device according to claim 7, characterized in that: The test device (3) comprises a hand wheel (301), an analog rotating wheel (302), a motor (303), an obstacle strip (304), a moving nest (305), a fixed column (306), a lead screw (307), a roller (308), a limiting assembly (309) and a limiting column (310), the lower end of the limiting column (310) is fixedly connected to the upper surface of the moving support (203), the motor (303) is fixedly connected to the inner side surface of the limiting column (310), the analog rotating wheel (302) is fixedly connected to the output end of the motor (303), the obstacle strip (304) is slidingly connected to the inner side surface of the analog rotating wheel (302), the limiting assembly (309) is respectively installed on the two side surfaces of the obstacle strip (304), the rear end of the fixed column (306) is fixedly connected to the inner side surface of the analog rotating wheel (302), the rear end of the lead screw (307) is rotatably connected to the front side surface of the fixed column (306), the hand wheel (301) is fixedly connected to the front end of the lead screw (307), the moving nest (305) is threadedly connected to the surface of the lead screw (307), the moving nest (305) is slidingly connected to the inner side surface of the analog rotating wheel (302) through a sliding strip, the moving nest (305) is slidingly connected to the side surface of the fixed column (306), and the roller (308) is rotatably connected to the inner side surface of the obstacle strip (304).

9. The new energy vehicle independent suspension fatigue test detection device according to claim 8, characterized in that: The limiting assembly (309) comprises a first sliding rod (30901), a fixed plate (30902) and a first spring (30903), the fixed plate (30902) is fixedly connected to the side surface of the blocking strip (304), the first sliding rod (30901) is fixedly connected to the inner side surface of the simulation rotating wheel (302), the first spring (30903) is sleeved on the side surface of the first sliding rod (30901), one end of the first sliding rod (30901) is fixedly connected to the side surface of the fixed plate (30902), and the other end of the first spring (30903) is fixedly connected to the inner side surface of the simulation rotating wheel (302).

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