Dynamic and static balance testing device for automobile chassis

Abstract

The invention belongs to the technical field of automobile detection, and particularly relates to an automobile chassis dynamic and static balance testing device which comprises a base, a first mounting plate is arranged above the base, and the two sides of the first mounting plate are turned upwards by 90 degrees. A gradient adjusting mechanism for adjusting the inclination angle of the chassis is arranged between the base and the outer wall of the first mounting plate and is used for providing test conditions for the automobile chassis under the conditions of uphill, downhill or side slope; the top of the first mounting plate is provided with a power mechanism used for simulating the driving state of the automobile chassis. A bumping mechanism matched with the power mechanism is arranged at the top of the first mounting plate and is used for providing a test condition for the automobile chassis under a bumping condition; a second mounting plate is arranged above the power mechanism; according to the invention, the driving state of the automobile chassis on different slopes, bumpy road surfaces and road surfaces with different friction forces can be simulated, so that the test result is closer to the actual driving condition, and the accuracy and comprehensiveness of the test are improved.

Description

Technical Field

[0001] The present invention belongs to the technical field of vehicle detection, and particularly relates to a dynamic and static balance test device for an automotive chassis. Background Art

[0002] The dynamic and static balance performance of an automotive chassis has a crucial impact on aspects such as the driving stability, safety, and comfort of the vehicle. In the processes of vehicle research and development, production, and after-sales maintenance, it is necessary to conduct dynamic and static balance tests on the automotive chassis to ensure that the quality and performance of the chassis meet the requirements.

[0003] Problems existing in the prior art: Existing automotive chassis test devices often have a single function and cannot comprehensively simulate various complex road conditions and working conditions encountered by the vehicle during actual driving, such as roads with different slopes, bumpy roads, and roads with different frictions, resulting in inaccurate and incomplete test results and being unable to truly reflect the dynamic and static balance performance of the automotive chassis. Summary of the Invention

[0004] The purpose of the present invention is to provide a dynamic and static balance test device for an automotive chassis, which can simulate the driving states of the automotive chassis on roads with different slopes, bumpy roads, and roads with different frictions, making the test results closer to the actual driving situation and improving the accuracy and comprehensiveness of the test.

[0005] The technical solution adopted by the present invention is specifically as follows: A dynamic and static balance test device for an automotive chassis, including a base. A first mounting plate is arranged above the base, and both sides of the first mounting plate are folded upwards at 90 degrees. A slope adjustment mechanism for adjusting the tilt angle of the chassis is arranged between the outer walls of the base and the first mounting plate to provide test conditions for the automotive chassis in uphill, downhill, or side-slope situations; A power mechanism for simulating the driving state of the automotive chassis is arranged at the top of the first mounting plate; A bump mechanism cooperating with the power mechanism is arranged at the top of the first mounting plate to provide test conditions for the automotive chassis in a bumpy situation; A second mounting plate is arranged above the power mechanism. Road surface simulation mechanisms are arranged at the four corners of the bottom of the second mounting plate to provide test conditions for the automotive chassis under different frictions; Four brackets are arranged at the top of the first mounting plate, and three rollers for limiting the outer tire are arranged on one side of the brackets; A detection mechanism for detecting the force magnitudes at different positions of the automotive chassis is arranged at the top of the second mounting plate.

[0006] The slope adjustment mechanism includes a first hydraulic cylinder inclined toward the middle at each of the four top corners of the base, a first ball sleeve at each of the outer walls of the base and the first mounting plate, a first ball block matched with the first ball sleeve fixed to the output shaft and the bottom end of the first hydraulic cylinder, a second ball sleeve at the bottom center of the first mounting plate, a second ball block inside the second ball sleeve, and a support rod fixed to the second ball block at the top of the base.

[0007] The power mechanism includes two first mounting ears fixed on one side of the top of the first mounting plate, a first rotating shaft is rotatably installed through the outer walls of the two first mounting ears, and active rollers are fixed at both ends of the first rotating shaft, a first motor is arranged on the top of the first mounting plate, and the output shaft of the first motor is transmission-connected to the first rotating shaft through a bevel gear set, a first mounting block is fixed on the other side of the top of the first mounting plate, two first guide rods are arranged on one side of the first mounting block, a guide groove connected to the first guide rod for damping sliding is opened on one side of the first mounting block, a second mounting block is arranged between the other ends of the two first guide rods, a first spring is arranged on the outer wall of the first guide rod and between the first mounting block and the second mounting block, a second rotating shaft is rotatably installed through the outer wall of the second mounting block, driven rollers are arranged at both ends of the second rotating shaft, a driving belt is arranged between the driven roller and the active roller, a second mounting ear is arranged on the top of the first mounting plate and on both sides of the second mounting block, and a limiting groove cooperating with the second rotating shaft is opened through the outer wall of the second mounting ear.

[0008] The two wheels have a first end fixed to them by a second end, the second end being fixedly mounted on the drive belt support, and the second end being mounted on the drive belt support.

[0009] A second hydraulic cylinder is fixed to one side of the third mounting block. The output shaft of the second hydraulic cylinder is fixed with a sliding plate. A second U-shaped rod slides up and down on one side of the sliding plate. A first sliding groove is formed on the outer wall of the second U-shaped rod. A first sliding block slidably connected to the first sliding groove is fixed to the outer wall of the sliding plate. Second limiting sliding blocks are fixed to both bottom ends of the second U-shaped rod. Second limiting sliding grooves slidably connected to the second limiting sliding blocks are formed through the outer walls of the two cross plates. A fixing plate is fixed to one side of the bottom of the seesaw. A second sliding groove is formed through the outer wall of the fixing plate. A cylindrical sliding block is slidably arranged inside the second sliding groove. An adjusting rod fixed to the outer wall of the second U-shaped rod is fixed to one side of the cylindrical sliding block.

[0010] The road surface simulation mechanism includes support legs fixed to the four corners of the bottom of the second mounting plate. A third sliding groove is formed on one side of the support leg. A third sliding block is damping slidably installed inside the third sliding groove. A second spring fixed to the inner top of the third sliding groove is arranged on the top of the third sliding block. A first hub is arranged at one end of the second mounting shaft. An annular docking groove is formed on one side of the first hub. A plurality of inserting rods are fixed along the circumferential direction inside the annular docking groove. A second hub is arranged on one side of the first hub. One side of the second hub is inserted into the annular docking groove. An inserting groove matched with the inserting rod is formed on one side of the second hub. Two first reinforcing frames are arranged inside the first hub. A second reinforcing frame is arranged at the inner edge of the second hub. A third hydraulic cylinder connected to the second reinforcing frame is arranged on one side of one of the first reinforcing frames. A second mounting shaft is rotatably installed on one side of the third sliding block. The other end of the second mounting shaft is fixed to one of the first reinforcing frames. An inner tube is arranged between the outer walls of the first hub and the second hub. An outer tire wraps the outer wall of the inner tube. Two sides of the outer tire are respectively fixed to the outer walls of the first hub and the second hub. The outer tire is made of elastic rubber material. A locking mechanism for locking the hub is arranged on one side of the first reinforcing frame.

[0011] The locking mechanism includes a second motor arranged on one side of the first reinforcing frame. The output shaft of the second motor is fixed with a mounting disc. Blocks are fixed along the circumferential direction on the outer wall of the mounting disc. A plurality of third guide rods are fixed along the circumferential direction on one side of the second reinforcing frame. One ends of the third guide rods pass through the first reinforcing frame and a plurality of card slots matched with the blocks are formed at equal intervals. The number of the blocks is the same as that of the third guide rods.

[0012] The detection mechanism includes third mounting plates fixed to both sides of the top of the second mounting plate. A downward pressure tester is arranged on the top of the third mounting plate. Clamping mechanisms for fixing the chassis are arranged on both sides of the top of the downward pressure tester. A plurality of telescopic rods are horizontally and equidistantly arrayed between the two third mounting plates on the top of the second mounting plate. A pressure detection head is arranged on the top of the telescopic rod.

[0013] Electric slide rails are arranged on both sides of the second mounting plate. Electric sliders are slidably arranged on the top of the electric slide rails. A connecting plate is arranged between the outer walls of the two electric sliders. A plurality of fourth hydraulic cylinders are longitudinally and equidistantly fixed to the top of the connecting plate. The output shaft of the fourth hydraulic cylinder is fixed with a fourth mounting plate. Pressing rods are fixed to both sides of the bottom of the fourth mounting plate. An extrusion block is fixed to the bottom of the pressing rod below the connecting plate. Through holes for slidably connecting the pressing rod are formed through the outer wall of the connecting plate.

[0014] An air pump for inflating and deflating the inner tube is fixed to one side of the support leg above the third sliding groove. An installation ring rotatably connected to the second mounting shaft is fixed to one side of the third slider. A groove ring is formed on one side of the installation ring. A sealing cover is fixed to the outer wall of the second mounting shaft and is rotatably connected to the installation ring in a sealed manner. Two connecting pipes are connected through one side of the sealing cover. A hollow ring communicated with the connecting pipe is fixed to the outer wall of the second mounting shaft. The air port of the air pump is communicated with the groove ring through a flexible air pipe. The hollow ring is communicated with the inner tube through a flexible air pipe.

[0015] The technical effects achieved by the present invention are as follows: Through the cooperation of the four first hydraulic cylinders, the first ball sleeve, the first ball block, the second ball sleeve, etc. in the slope adjustment mechanism of the present invention, the first mounting plate can be tilted upward, tilted downward or tilted laterally, and the force on the automotive chassis under different slopes such as uphill, downhill or side slope can be simulated, making the test results closer to various road conditions in actual driving. The bump mechanism utilizes the rotation of the first rotating shaft to drive the turntable to rotate through the belt transmission mechanism, and then makes the seesaw swing reciprocally left and right. Cooperating with the raised blocks, the position where the driving belt is contacted by the outer tire is lifted up and down reciprocally, simulating the driving state of the automotive chassis on a bumpy road surface. And the swing amplitude of the seesaw can be adjusted by the second hydraulic cylinder, so as to simulate a test road surface with large bumps or small bumps, which is closer to the actual operation situation. The third hydraulic cylinder in the road surface simulation mechanism can adjust the distance between the second wheel hub and the first wheel hub, changing the contact area between the outer tire and the driving belt, so as to simulate the friction force of different road surfaces such as muddy, rough mountain roads, rainy days, snowy days, etc., providing more comprehensive conditions for the static and dynamic balance tests of the automotive chassis under various road conditions.

[0016] In the present invention, the pressure detection head at the top of the telescopic rod in the detection mechanism can accurately measure the deformation of the chassis of the vehicle to be tested during the load test and the pressure borne by each part, facilitating a more accurate judgment of the load capacity of the chassis. The downward pressure tester on the third mounting plate can accurately record the pressure data at the wheel mounting position. Through the cooperation of the electric slide rail, electric slider, fourth hydraulic cylinder, etc., comprehensive pressure testing and deformation recording of various parts of the chassis can be carried out.

[0017] In the present invention, the belt drive mechanism in the bump mechanism can provide power for the swing of the seesaw through the power mechanism, realizing the rational utilization of power, improving the energy-saving effect of the equipment, and reducing the energy consumption of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is the front three-dimensional structure schematic diagram of the present invention; Figure 2 is the side three-dimensional structure schematic diagram of the present invention; Figure 3 is the three-dimensional structure schematic diagram of the power mechanism of the present invention; Figure 4 is the three-dimensional structure schematic diagram of the seesaw of the present invention; Figure 5 is the three-dimensional structure schematic diagram of the bump mechanism of the present invention; Figure 6 is the sectional three-dimensional structure schematic diagram of the bump mechanism of the present invention; Figure 7 is the three-dimensional structure schematic diagram of the detection mechanism of the present invention; Figure 8 is the three-dimensional structure schematic diagram of the road surface simulation mechanism of the present invention; Figure 9 is the three-dimensional structure schematic diagram of the support leg of the present invention; Figure 10 is the three-dimensional structure schematic diagram of the first hub of the present invention; Figure 11 is the three-dimensional structure schematic diagram of the second hub of the present invention; Figure 12 is the three-dimensional structure schematic diagram of the outer tire and inner tire of the present invention; Figure 13 is the sectional structure schematic diagram of the mounting ring of the present invention.

[0019] In the drawings, the list of components represented by each reference numeral is as follows: 1. Base; 2. Slope adjustment mechanism; 21. First hydraulic cylinder; 22. First ball block; 23. First ball socket; 24. Support rod; 25. Second ball block; 26. Second ball socket; 3. First mounting plate; 4. Power mechanism; 41. First mounting ear; 42. First rotating shaft; 43. Driving roller; 44. Driving belt; 45. Second mounting ear; 46. Limit groove; 47. Second rotating shaft; 48. Driven roller; 49. First mounting block; 410. First guide rod; 411. First spring; 412. Second mounting block; 413. First motor; 414. Bevel gear set; 5. Bump mechanism; 51. Third mounting block; 52. First mounting shaft; 53. Wobble board; 54. Protruding block; 55. Support plate; 56. Third rotating shaft; 57. Turntable; 58. First limit slider; 59. Second guide rod; 510. First U-shaped plate; 511. First limit chute; 512. Second limit chute; 513. Second hydraulic cylinder; 514. Sliding plate; 515. Second U-shaped rod; 516. First chute; 517. Second limit slider; 518. Adjusting rod; 519. Cylindrical slider; 520. Fixed plate; 521. Second chute; 6. Belt transmission mechanism; 7. Road surface simulation mechanism; 71. Support leg; 72. Third slider; 73. Second spring; 74. Second mounting shaft; 75. First hub; 76. Second hub; 77. First reinforcing frame; 78. Second reinforcing frame; 79. Third hydraulic cylinder; 710. Outer tire; 711. Inner tire; 712. Annular docking groove; 713. Inserting rod; 714. Inserting slot; 8. Locking mechanism; 81. Third guide rod; 82. Card slot; 83. Second motor; 84. Mounting disc; 85. Card block; 9. Detection mechanism; 91. Third mounting plate; 92. Downward pressure tester; 93. Telescopic rod; 94. Pressure detection head; 95. Electric slide rail; 96. Electric slider; 97. Connecting plate; 98. Fourth hydraulic cylinder; 99. Fourth mounting plate; 910. Pressing rod; 911. Extrusion block; 10. Second mounting plate; 11. Clamping mechanism; 12. Bracket; 13. Roller; 14. Air pump; 15. Mounting ring; 16. Sealing cover; 17. Hollow ring; 18. Connecting pipe. Specific embodiments

[0020] In order to make the purpose and advantages of the present invention clearer, the present invention will be specifically described below in conjunction with embodiments. It should be understood that the following text is only used to describe one or several specific embodiments of the present invention, and does not strictly limit the scope of protection specifically requested by the present invention.

[0021] As Figures 1-2As shown, a vehicle chassis dynamic and static balance test device comprises a base 1, a first mounting plate 3 is arranged above the base 1, both sides of the first mounting plate 3 are folded upward at 90 degrees, a slope adjustment mechanism 2 for adjusting the chassis tilt angle is arranged between the base 1 and the outer wall of the first mounting plate 3, and is used to provide test conditions for the vehicle chassis in uphill, downhill or side slope conditions; the slope adjustment mechanism 2 comprises a first hydraulic cylinder 21 inclined toward the middle part is arranged at the top four corners of the base 1, the base 1 and the outer wall of the first mounting plate 3 are arranged with a first ball sleeve 23, the output shaft and the bottom end of the first hydraulic cylinder 21 are fixed with a first ball block 22 matched with the first ball sleeve 23, a second ball sleeve 26 is arranged at the bottom center of the first mounting plate 3, a second ball sleeve 25 is arranged inside the second ball sleeve 26, and a support rod 24 fixed to the second ball block 25 is fixed on the top of the base 1.

[0022] According to the above structure, through the arrangement of four first hydraulic cylinders 21, through the extension and retraction of the first hydraulic cylinders 21, and in combination with the first ball sleeve 23 and the first ball block 22, the first mounting plate 3 can be driven to tilt upward, downward or sideways, and when testing the automobile chassis, the stress conditions of the automobile floor at different slopes can be simulated.

[0023] like Figures 1-3 As shown, a power mechanism 4 for simulating the driving state of a car chassis is arranged on the top of the first mounting plate 3; the power mechanism 4 includes two first mounting ears 41 fixed on one side of the top of the first mounting plate 3, a first rotating shaft 42 is rotatably installed through the outer walls of the two first mounting ears 41, and active rollers 43 are fixed at both ends of the first rotating shaft 42. A first motor 413 is arranged on the top of the first mounting plate 3, and the output shaft of the first motor 413 is transmission-connected to the first rotating shaft 42 through a bevel gear set 414. A first mounting block 49 is fixed on the other side of the top of the first mounting plate 3, and two first guide rods 410 are arranged on one side of the first mounting block 49. A guide groove is provided which is connected to the first guide rod 410 for damping sliding, a second mounting block 412 is provided between the other ends of the two first guide rods 410, a first spring 411 is provided on the outer wall of the first guide rod 410 and between the first mounting block 49 and the second mounting block 412, a second rotating shaft 47 is rotatably installed through the outer wall of the second mounting block 412, driven rollers 48 are provided at both ends of the second rotating shaft 47, a driving belt 44 is provided between the driven roller 48 and the active roller 43, second mounting ears 45 are provided on the top of the first mounting plate 3 and on both sides of the second mounting block 412, and a limiting groove 46 which cooperates with the second rotating shaft 47 is provided through the outer wall of the second mounting ear 45.

[0024] According to the above structure, start the first motor 413. The first motor 413 drives the first rotating shaft 42 through the bevel gear set 414. The first rotating shaft 42 drives the driving roller 43. The driving roller 43 drives the driving belt 44 to rotate by cooperating with the driven roller 48. When the outer tire 710 contacts the driving belt 44, it can drive the driving belt 44 to rotate, simulating the normal driving state of the vehicle. The first guide rod 410 and the first spring 411 are provided. Through the elastic force of the first spring 411, when the driving belt 44 vibrates, the driven roller 48 has a buffering effect during movement, can always tighten the driving belt 44, and is convenient for the normal use of the equipment.

[0025] As Figures 1-6 shown, a bump mechanism 5 cooperating with the power mechanism 4 is provided at the top of the first mounting plate 3 for providing test conditions for the vehicle chassis under bumpy conditions. The bump mechanism 5 includes a third mounting block 51 provided in the middle of the top of the first mounting plate 3. First mounting shafts 52 are rotatably mounted on both sides of the third mounting block 51. One end of the first mounting shaft 52 is located inside the driving belt 44 and is fixed with a seesaw 53. Protruding blocks 54 in contact with the inner side of the driving belt 44 are provided at both ends of the seesaw 53. Two support plates 55 are fixed on the top of the first mounting plate 3 and on one side of the third mounting block 51. A third rotating shaft 56 is rotatably mounted through the outer walls of the two support plates 55. Turntables 57 are fixed at both ends of the third rotating shaft 56. First limit sliders 58 are provided on the outer walls of the turntables 57. A plurality of second guide rods 59 are provided on the top of the first mounting plate 3. A first U-shaped plate 510 is slidably mounted up and down between the outer walls of the second guide rods 59. The first U-shaped plate 510 is integrally formed by a longitudinal plate and two transverse plates. First limit chutes 511 for slidably connecting with the first limit sliders 58 are penetrated and opened on the outer walls of the two transverse plates. A belt transmission mechanism 6 connecting with the first rotating shaft 42 is provided on the outer wall of the third rotating shaft 56. A second hydraulic cylinder 513 is fixed on one side of the third mounting block 51. The output shaft of the second hydraulic cylinder 513 is fixed with a sliding plate 514. A second U-shaped rod 515 slides up and down on one side of the sliding plate 514. A first chute 516 is opened on the outer wall of the second U-shaped rod 515. A first slider slidably connecting with the first chute 516 is fixed on the outer wall of the sliding plate 514. Second limit sliders 517 are fixed at both bottom ends of the second U-shaped rod 515. Second limit chutes 512 for slidably connecting with the second limit sliders 517 are penetrated and opened on the outer walls of the two transverse plates. A fixing plate 520 is fixed on one side of the bottom of the seesaw 53. A second chute 521 is penetrated and opened on the outer wall of the fixing plate 520. A cylindrical slider 519 is slidably arranged inside the second chute 521. An adjusting rod 518 fixed to the outer wall of the second U-shaped rod 515 is fixed on one side of the cylindrical slider 519.

[0026] According to the above structure, by rotating the first rotating shaft 42, cooperating with the belt transmission mechanism 6 to drive the third rotating shaft 56 to rotate, the third rotating shaft 56 drives the turntable 57 to rotate, the turntable 57 drives the first limit slider 58 to rotate, the first limit slider 58 cooperates with the first limit chute 511 to drive the first U-shaped plate 510 to move up and down. The first U-shaped plate 510 drives the second U-shaped rod 515 to move up and down through the second limit slider 517. The second U-shaped rod 515 drives the cylindrical slider 519 on the adjusting rod 518 to move up and down. The cylindrical slider 519 cooperates with the second chute 521 to drive the rocker 53 to swing left and right reciprocally. Then, cooperating with the raised block 54, the position where the driving belt 44 is contacted by the outer tire 710 is lifted up and down reciprocally to simulate the bumpy road surface in the automotive chassis test. Start the second hydraulic cylinder 513, the second hydraulic cylinder 513 pushes the sliding plate 514 to move, the sliding plate 514 pushes the second U-shaped rod 515 to move, the second U-shaped rod 515 drives the second limit slider 517 to move in the second limit chute 512. At the same time, it drives the cylindrical slider 519 on the adjusting rod 518 to move in the second chute 521 and adjusts the specific position of the cylindrical slider 519 at the middle rotating connection of the rocker 53. The closer to the middle rotating connection of the rocker 53, the greater the swing amplitude of the rocker 53, and vice versa, so as to simulate the test road surface of large bumps or small bumps, be closer to the actual operation situation, and provide more accurate and comprehensive test results. The cooperation of the first chute 516 and the first slider enables the second U-shaped rod 515 to move up and down normally, improving the perfection of the equipment. The belt transmission mechanism 6 provided can provide power for the swing of the rocker 53 through the power mechanism 4, improving the energy-saving effect of the equipment.

[0027] As Figures 8-12As shown in the figure, a second mounting plate 10 is provided above the power mechanism 4. Four corners of the bottom of the second mounting plate 10 are provided with a road surface simulation mechanism 7 for providing test conditions for the vehicle chassis under different frictional forces. The road surface simulation mechanism 7 includes support legs 71 fixed to the four corners of the bottom of the second mounting plate 10. A third chute is provided on one side of the support leg 71. A third slider 72 is dampingly slidably mounted inside the third chute. A second spring 73 fixed to the top of the third chute is provided on the top of the third slider 72. One end of a second mounting shaft 74 is provided with a first hub 75. An annular docking groove 712 is provided on one side of the first hub 75. A plurality of insertion rods 713 are fixed along the circumferential direction inside the annular docking groove 712. A second hub 76 is provided on one side of the first hub 75. One side of the second hub 76 is inserted into the annular docking groove 712. An insertion slot 714 matching with the insertion rod 713 is provided on one side of the second hub 76. Two first reinforcing frames 77 are provided inside the first hub 75. A second reinforcing frame 78 is provided at the inner edge of the second hub 76. A third hydraulic cylinder 79 connected to the second reinforcing frame 78 is provided on one side of one of the first reinforcing frames 77. One side of the third slider 72 is rotatably mounted with a second mounting shaft 74. The other end of the second mounting shaft 74 is fixed to one of the first reinforcing frames 77. An inner tube 711 is provided between the outer walls of the first hub 75 and the second hub 76. An outer tire 710 is wrapped around the outer wall of the inner tube 711. Two sides of the outer tire 710 are respectively fixedly connected to the outer walls of the first hub 75 and the second hub 76. The outer tire 710 is made of an elastic rubber material. A locking mechanism 8 for locking the hub is provided on one side of the first reinforcing frame 77.

[0028] According to the above structure, when the third hydraulic cylinder 79 is started, the third hydraulic cylinder 79 drives the second hub 76 to move through the second reinforcing frame 78, and the distance between the second hub 76 and the first hub 75 is adjusted. The width of the hub is adjusted as needed. The second hub 76 drives the outer tire 710 to move to one side, and the outer tire 710 is horizontally stretched, and the contact area between the outer tire 710 and the drive belt 44 is adjusted, and the contact area between the tire and the ground is increased, and the frictional force of muddy and rugged mountain road surfaces can be simulated. The contact area between the tire and the ground is reduced, and the frictional force of rainy and snowy day ground can be simulated. The cooperation of the provided insertion rod 713 and the insertion slot 714 makes the adjustment of the second hub 76 relatively stable. The provided first reinforcing frame 77 and the second reinforcing frame 78 can effectively increase the strength of the first hub 75 and the second hub 76. The provided third slider 72 is dampingly slidable in the third chute, and in cooperation with the second spring 73, it can be used to simulate the shock absorption system of the vehicle.

[0029] Four brackets 12 are provided on the top of the first mounting plate 3. Three rollers 13 for limiting the outer tire 710 are provided on one side of the brackets 12.

[0030] As Figure 1 、Figure 2 and Figure 7 As shown in Figure 7 , a detection mechanism 9 for detecting the force magnitudes at different positions of the vehicle chassis is provided at the top of the second mounting plate 10; the detection mechanism 9 includes third mounting plates 91 fixedly provided on both sides of the top of the second mounting plate 10, a downward pressure tester 92 is provided at the top of the third mounting plate 91, clamping mechanisms 11 for fixing the chassis are provided on both sides of the top of the downward pressure tester 92, and a plurality of telescopic rods 93 are horizontally and equally spaced in an array between the two third mounting plates 91 at the top of the second mounting plate 10, and a pressure detection head 94 is provided at the top of the telescopic rod 93; An electric slider 96 is slidably provided on the top of the electric slide rail 95, a connecting plate 97 is provided between the outer walls of the two electric sliders 96, a plurality of fourth hydraulic cylinders 98 are longitudinally and equally spaced and fixedly provided on the top of the connecting plate 97, a fourth mounting plate 99 is fixedly provided on the output shaft of the fourth hydraulic cylinder 98, pressure application rods 910 are fixedly provided on both sides of the bottom of the fourth mounting plate 99, an extrusion block 911 is fixedly provided at the bottom of the pressure application rod 910 below the connecting plate 97, and through holes slidably connected to the pressure application rod 910 are formed through the outer wall of the connecting plate 97.

[0031] According to the above structure, the pressure detection head 94 is provided at the top of the provided telescopic rod 93, which can accurately measure the deformation condition of the vehicle chassis to be tested during the load test and the pressure borne by each part, facilitating a further judgment of the load capacity of the chassis, and the downward pressure tester 92 installed on the third mounting plate 91 can accurately record the pressure data received at the wheel installation position when the chassis is undergoing a load test; through the cooperation of the electric slide rail 95 and the electric slider 96, the third mounting plate 91 can be driven to move left and right, the fourth hydraulic cylinder 98 is started to drive the pressure application rod 910 on the fourth mounting plate 99 to move downward, the pressure application rod 910 presses the vehicle chassis below it through the extrusion block 911, and then the pressure data and deformation degree received by each part of the chassis are recorded through the pressure detection head 94 and the downward pressure tester 92.

[0032] As Figure 11 shown in Figure 11 , the locking mechanism 8 includes a second motor 83 provided on one side of the first reinforcing frame 77, a mounting disc 84 is fixedly provided on the output shaft of the second motor 83, clamping blocks 85 are fixedly provided on the outer wall of the mounting disc 84 along the circumferential direction, a plurality of third guide rods 81 are fixedly provided along the circumferential direction on one side of the second reinforcing frame 78, one end of the third guide rod 81 passes through the first reinforcing frame 77 and a plurality of card slots 82 matching with the clamping blocks 85 are equally spaced, and the number of the clamping blocks 85 and the third guide rods 81 is the same.

[0033] According to the above structure, before adjusting the second hub 76, start the second motor 83 to rotate forward. The second motor 83 drives the mounting plate 84 to rotate, and the mounting plate 84 drives the clamping block 85 to rotate, so that the clamping block 85 disengages from the clamping groove 82, canceling the limit on the second hub 76; facilitating subsequent movement adjustment of the second hub 76. After the adjustment is completed, start the second motor 83 to rotate in reverse. The clamping block 85 rotates, so that the clamping block 85 is stuck in the corresponding clamping groove 82 to limit and fix the third guide rod 81, thereby limiting and fixing the second hub 76.

[0034] As Figure 9 shown, on one side of the support leg 71 and above the third chute, an air pump 14 for inflating and deflating the inner tube 711 is fixed. On one side of the third slider 72, a mounting ring 15 rotatably connected to the second mounting shaft 74 is fixed. A groove ring is formed on one side of the mounting ring 15. A sealing cover 16 that is hermetically rotatably connected to the mounting ring 15 is fixed to the outer wall of the second mounting shaft 74. Two connecting pipes 18 are connected through one side of the sealing cover 16. A hollow ring 17 communicated with the connecting pipes 18 is fixed to the outer wall of the second mounting shaft 74. The air port of the air pump 14 is communicated with the groove ring through a flexible air pipe, and the hollow ring 17 is communicated with the inner tube 711 through a flexible air pipe.

[0035] According to the above structure, when controlling the adjustment of the second hub 76, the air pump 14 is used to inflate or deflate the inner tube 711, so that the inner tube 711 always fits against the inner side of the outer tire 710, which can be closer to the actual tire. The provided mounting ring 15 and the sealing cover 16 are hermetically rotatably connected, avoiding the influence of the rotation of the tire on the inflation and deflation of the inner tube 711, enabling the tire to operate normally, and improving the practicability of the equipment.

[0036] The working principle of the present invention is as follows: When it is necessary to simulate different slopes, it is achieved by controlling the telescoping of the four first hydraulic cylinders 21. For example, if it is necessary to simulate an uphill slope, the first hydraulic cylinders 21 at the front two corners can be extended, and the first hydraulic cylinders 21 at the rear two corners can be shortened. The first ball block 22 slides in the first ball socket 23, and at the same time, the second ball block 25 rotates in the second ball socket 26. The support rod 24 plays a role in stable support, thereby driving the front end of the first mounting plate 3 to tilt upward to form an uphill angle. Similarly, through the telescoping operation of different combinations of the first hydraulic cylinders 21, the simulation of a downhill slope (the front two corners are shortened, and the rear two corners are extended) and a side slope (two corners on one side are extended, and two corners on the other side are shortened) can be achieved, providing basic conditions for testing the stress conditions of the vehicle chassis when driving on different slopes. The power source of the power mechanism 4 is the first motor 413; after starting the first motor 413, its output shaft drives the bevel gear set 414 to operate, and the bevel gear set 414 transmits the power to the first rotating shaft 42, causing the first rotating shaft 42 to start rotating; since the driving rollers 43 are fixed at both ends of the first rotating shaft 42, the driving rollers 43 rotate synchronously with the first rotating shaft 42; the driving belt 44 is connected between the driving rollers 43 and the driven rollers 48, and driven by the driving rollers 43, the driving belt 44 starts to rotate in a cycle, thereby driving the driven rollers 48 to rotate; when the outer tire 710 contacts the rotating driving belt 44, the frictional force of the driving belt 44 drives the outer tire 710 to rotate, thus simulating the rotating state of the wheels when the vehicle is running normally; Bumpy road simulation, the bump mechanism 5 is connected to the power mechanism 4 through the belt drive mechanism 6; when the first rotating shaft 42 in the power mechanism 4 rotates, the belt drive mechanism 6 transmits the power to the third rotating shaft 56, causing the third rotating shaft 56 to rotate synchronously; turntables 57 are fixed at both ends of the third rotating shaft 56, and the turntables 57 rotate together with the third rotating shaft 56, and the first limit slider 58 on the outer wall thereof also makes a circular motion; the first limit slider 58 is slidably engaged with the first limit chute 511 on the outer walls of the two cross plates of the first U-shaped plate 510. When the first limit slider 58 rotates, it will slide in the first limit chute 511, thereby driving the first U-shaped plate 510 to make a reciprocating up and down movement on the second guide rod 59; second limit chutes 512 are provided on the outer walls of the two cross plates of the first U-shaped plate 510, and second limit sliders 517 are fixed at both bottom ends of the second U-shaped rod 515, and the second limit sliders 517 are slidably engaged with the second limit chutes 512; therefore, the up and down movement of the first U-shaped plate 510 will drive the second U-shaped rod 515 to move up and down through the second limit slider 517; the second U-shaped rod 515 is connected to the rocker 53 through the adjusting rod 518, and the cylindrical slider 519 at one end of the adjusting rod 518 slides in the second chute 521 of the bottom fixing plate 520 of the rocker 53; therefore, the up and down movement of the second U-shaped rod 515 will drive the rocker 53 to make a reciprocating left and right swing with the first mounting shaft 52 as the axis through the sliding of the cylindrical slider 519 in the second chute 521; since convex blocks 54 that contact the inner side of the drive belt 44 are provided at both ends of the rocker 53, the swing of the rocker 53 will cause the position where the drive belt 44 is contacted by the outer tire 710 to fluctuate up and down, thereby simulating the vibration effect when the vehicle chassis travels on a bumpy road; the second hydraulic cylinder 513 on one side of the third mounting block 51 is used to adjust the bump amplitude; after the second hydraulic cylinder 513 is started, its output shaft pushes the sliding plate 514 to move, and the sliding plate 514 drives the second U-shaped rod 515 to move; the movement of the second U-shaped rod 515 will cause the second limit slider 517 to move in the second limit chute 512, and at the same time, the cylindrical slider 519 on the adjusting rod 518 moves in the second chute 521; when the cylindrical slider 519 approaches the middle rotating connection of the rocker 53, according to the lever principle, the swing amplitude of the rocker 53 will increase, simulating a large bumpy road; on the contrary, when the cylindrical slider 519 moves away from the middle rotating connection of the rocker 53, the swing amplitude of the rocker 53 decreases, simulating a small bumpy road; in this way, different degrees of bumpy road conditions can be simulated according to actual test requirements, providing more comprehensive test conditions; When it is necessary to simulate the friction force of muddy and rough mountain road surfaces, the third hydraulic cylinder 79 can be used to push the second wheel hub 76 outward to increase the contact area between the outer tire 710 and the drive belt 44; when it is necessary to simulate the friction force of rainy and snowy road surfaces, the third hydraulic cylinder 79 can be used to pull the second wheel hub 76 inward to reduce the contact area between the outer tire 710 and the drive belt 44; in this way, the friction force between the tire and the drive belt 44 is changed to simulate the friction force conditions under different road conditions; During the detection, the vehicle chassis is placed on the second mounting plate 10 and fixed to the top of the third mounting plate 91 through the clamping mechanism 11; during the test, the pressure detection head 94 at the top of the telescopic rod 93 contacts the vehicle chassis, and can real-time measure the deformation of the chassis during the load test and the pressure borne by each part; at the same time, the downward pressure tester 92 at the top of the third mounting plate 91 can record the pressure data received at the wheel mounting position of the chassis, and these data provide basic information for evaluating the load capacity of the chassis; The cooperation of the electric slide rail 95 and the electric slider 96 is used to adjust the detection position; by controlling the electric slide rail 95, the electric slider 96 slides left and right on its top, thereby driving the connecting plate 97 and the third mounting plate 91 connected to the connecting plate 97 to move, changing the positions of the pressure detection head 94 and the downward pressure tester 92 under the chassis, and realizing the detection of different parts of the chassis; When it is necessary to apply additional pressure to the chassis, the fourth hydraulic cylinder 98 is started; the output shaft of the fourth hydraulic cylinder 98 drives the fourth mounting plate 99 to move downward, and the pressure application rods 910 on both sides of the bottom of the fourth mounting plate 99 move downward accordingly; the pressure application rods 910 pass through the through holes of the connecting plate 97, and the extrusion blocks 911 at their bottoms apply pressure to the vehicle chassis below; during the pressure application process, the pressure detection head 94 and the downward pressure tester 92 continuously record the pressure data and deformation degree received by each part of the chassis, and through the analysis of these data, the dynamic and static balance performance and load capacity of the vehicle chassis under different load conditions can be comprehensively evaluated.

[0037] The above is only the preferred implementation manner of the present invention. It should be noted that for those of ordinary skill in the art in this technical field, without departing from the principle of the present invention, several improvements and refinements can still be made, and these improvements and refinements should also be regarded as the protection scope of the present invention. The structures, devices and operation methods not specifically described and explained in the present invention, unless otherwise specified and limited, are implemented according to the conventional means in the art.

Claims

1. A vehicle chassis dynamic and static balance test device, comprising a base (1), characterized in that: A first mounting plate (3) is arranged above the base (1), both sides of the first mounting plate (3) are folded upward at 90 degrees, and a slope adjustment mechanism (2) for adjusting the inclination angle of the chassis is arranged between the base (1) and the outer wall of the first mounting plate (3), so as to provide test conditions for the chassis of the automobile in uphill, downhill or side slope situations; A power mechanism (4) for simulating the driving state of a vehicle chassis is arranged on the top of the first mounting plate (3); A bumping mechanism (5) cooperating with the power mechanism (4) is arranged on the top of the first mounting plate (3) to provide test conditions for the automobile chassis under bumping conditions; A second mounting plate (10) is arranged above the power mechanism (4), and road surface simulation mechanisms (7) are arranged at the four corners of the bottom of the second mounting plate (10) for providing test conditions for the automobile chassis under different friction forces; Four brackets (12) are arranged on the top of the first mounting plate (3), and three rollers (13) capable of limiting the position of the outer tire (710) are arranged on one side of the bracket (12); A detection mechanism (9) for detecting the magnitude of forces at different positions on the chassis of the automobile is arranged on the top of the second mounting plate (10).

2. The vehicle chassis dynamic and static balance test device according to claim 1, characterized in that: The slope adjustment mechanism (2) comprises a first hydraulic cylinder (21) which is arranged at each of the four corners of the top of the base (1) and is inclined toward the middle; the outer walls of the base (1) and the first mounting plate (3) are both provided with a first ball sleeve (23); the output shaft and the bottom end of the first hydraulic cylinder (21) are both fixed with a first ball block (22) which cooperates with the first ball sleeve (23); a second ball sleeve (26) is arranged at the center of the bottom of the first mounting plate (3); a second ball block (25) is arranged inside the second ball sleeve (26); and a support rod (24) which is fixed to the second ball block (25) is fixed to the top of the base (1).

3. The vehicle chassis dynamic and static balance test device according to claim 1, characterized in that: The power mechanism (4) comprises two first mounting ears (41) fixed on one side of the top of the first mounting plate (3); a first rotating shaft (42) is rotatably mounted through the outer walls of the two first mounting ears (41); driving rollers (43) are fixed to both ends of the first rotating shaft (42); a first motor (413) is arranged on the top of the first mounting plate (3); an output shaft of the first motor (413) is transmission-connected to the first rotating shaft (42) via a bevel gear set (414); a first mounting block (49) is fixed on the other side of the top of the first mounting plate (3); two first guide rods (410) are arranged on one side of the first mounting block (49); and a damping sliding connection with the first guide rod (410) is provided on one side of the first mounting block (49). A guide groove is formed, a second mounting block (412) is arranged between the other ends of the two first guide rods (410), a first spring (411) is arranged on the outer wall of the first guide rod (410) and located between the first mounting block (49) and the second mounting block (412), a second rotating shaft (47) is rotatably mounted through the outer wall of the second mounting block (412), driven rollers (48) are arranged at both ends of the second rotating shaft (47), a driving belt (44) is arranged between the driven roller (48) and the driving roller (43), a second mounting ear (45) is arranged on the top of the first mounting plate (3) and located on both sides of the second mounting block (412), and a limiting groove (46) cooperating with the second rotating shaft (47) is opened through the outer wall of the second mounting ear (45).

4. The vehicle chassis dynamic and static balance test device according to claim 1, characterized in that: The jolting mechanism (5) comprises a third mounting block (51) arranged in the middle of the top of the first mounting plate (3), first mounting shafts (52) are rotatably mounted on both sides of the third mounting block (51), one end of the first mounting shaft (52) is located in the driving belt (44) and is fixed with a seesaw (53), both ends of the seesaw (53) are provided with raised blocks (54) in contact with the inner side of the driving belt (44), two support plates (55) are fixed on the top of the first mounting plate (3) and located on one side of the third mounting block (51), a third rotating shaft (56) is rotatably mounted between the outer walls of the two support plates (55), and the first mounting shaft (52) is located in the driving belt (44) and is fixed with a seesaw (53) at one end. A rotating disk (57) is fixed at both ends of the three rotating shafts (56), and a first limiting slider (58) is arranged on the outer wall of the rotating disk (57). A plurality of second guide rods (59) are arranged on the top of the first mounting plate (3). A first U-shaped plate (510) is slidably mounted between the outer walls of the second guide rods (59). The first U-shaped plate (510) is integrally formed of a longitudinal plate and two transverse plates. The outer walls of the two transverse plates are both provided with a first limiting slide groove (511) slidably connected to the first limiting slider (58). The outer wall of the third rotating shaft (56) is provided with a belt transmission mechanism (6) connected to the first rotating shaft (42).

5. The vehicle chassis dynamic and static balance test device according to claim 4, characterized in that: A second hydraulic cylinder (513) is fixed to one side of the third mounting block (51); a sliding plate (514) is fixed to the output shaft of the second hydraulic cylinder (513); a second U-shaped rod (515) is slidably mounted on one side of the sliding plate (514); a first sliding groove (516) is formed on the outer wall of the second U-shaped rod (515); a first sliding block slidably connected to the first sliding groove (516) is fixed to the outer wall of the sliding plate (514); second limit sliding blocks are fixed to both bottom ends of the second U-shaped rod (515). The outer walls of the two horizontal plates are provided with a second limiting sliding groove (512) slidably connected to the second limiting sliding block (517); a fixing plate (520) is fixed to one side of the bottom of the rocker plate (53); a second sliding groove (521) is provided on the outer wall of the fixing plate (520); a cylindrical sliding block (519) is slidably arranged inside the second sliding groove (521); and an adjusting rod (518) fixed to the outer wall of the second U-shaped rod (515) is fixed to one side of the cylindrical sliding block (519).

6. The vehicle chassis dynamic and static balance test device according to claim 1, characterized in that: The road simulation mechanism (7) comprises a second mounting plate (10) having support legs (71) fixed at the bottom four corners thereof, a third slide groove being provided on one side of the support leg (71), a third slider (72) being provided inside the third slide groove for damping sliding, a second spring (73) being provided at the top of the third slider (72) and being fixed to the top of the third slide groove, a first hub (75) being provided at one end of the second mounting shaft (74), a ring-shaped docking groove (712) being provided on one side of the first hub (75), a plurality of plug-in rods (713) being fixed inside the ring-shaped docking groove (712) along a circumferential direction, a second hub (76) being provided on one side of the first hub (75), a side of the second hub (76) being inserted into the ring-shaped docking groove (712), a plug-in groove (714) being provided on one side of the second hub (76) and cooperating with the plug-in rod (713), the first hub (75) ), two first reinforcement frames (77) are arranged on the inner side of the second wheel hub (76), a second reinforcement frame (78) is arranged at the inner edge of the second wheel hub (76), a third hydraulic cylinder (79) connected to the second reinforcement frame (78) is arranged on one side of one of the first reinforcement frames (77), a second mounting shaft (74) is rotatably mounted on one side of the third slider (72), the other end of the second mounting shaft (74) is fixed to one of the first reinforcement frames (77), an inner tube (711) is arranged between the outer walls of the first wheel hub (75) and the second wheel hub (76), the outer wall of the inner tube (711) is wrapped with an outer tube (710), the two sides of the outer tube (710) are respectively fixedly connected to the outer walls of the first wheel hub (75) and the second wheel hub (76), the outer tube (710) is made of elastic rubber material, and a locking mechanism (8) for locking the wheel hub is arranged on one side of the first reinforcement frame (77).

7. The vehicle chassis dynamic and static balance test device according to claim 6, characterized in that: The locking mechanism (8) comprises a first reinforcing frame (77) on one side of which a second motor (83) is arranged, a mounting plate (84) being fixed to the output shaft of the second motor (83), a clamping block (85) being fixed to the outer wall of the mounting plate (84) along a circumferential direction, a plurality of third guide rods (81) being fixed to one side of the second reinforcing frame (78) along a circumferential direction, one end of the third guide rod (81) passing through the first reinforcing frame (77) being provided with a plurality of clamping grooves (82) cooperating with the clamping blocks (85) at equal intervals, and the number of the clamping blocks (85) and the third guide rods (81) being the same.

8. The vehicle chassis dynamic and static balance test device according to claim 1, characterized in that: The detection mechanism (9) comprises a second mounting plate (10) with third mounting plates (91) fixed on both sides of the top thereof, a downforce tester (92) being arranged on the top of the third mounting plate (91), clamping mechanisms (11) for fixing the chassis being arranged on both sides of the top of the downforce tester (92), a plurality of telescopic rods (93) being arranged in a laterally equidistant array on the top of the second mounting plate (10) and between the two third mounting plates (91), and a pressure detection head (94) being arranged on the top of the telescopic rods (93).

9. The vehicle chassis dynamic and static balance test device according to claim 1, characterized in that: Electric slide rails (95) are provided on both sides of the second mounting plate (10), an electric slider (96) is slidably provided on the top of the electric slide rail (95), a connecting plate (97) is provided between the outer walls of the two electric sliders (96), a plurality of fourth hydraulic cylinders (98) are longitudinally equidistantly fixed on the top of the connecting plate (97), the output shaft of the fourth hydraulic cylinder (98) is fixed to a fourth mounting plate (99), pressure rods (910) are fixed on both sides of the bottom of the fourth mounting plate (99), an extrusion block (911) is fixed on the bottom of the pressure rod (910) below the connecting plate (97), and a through hole slidably connected to the pressure rod (910) is provided on the outer wall of the connecting plate (97), 10. The vehicle chassis dynamic and static balance test device according to claim 6, characterized in that: An air pump (14) for inflating and deflation of the inner tube (711) is fixed on one side of the support leg (71) and located above the third slide groove; a mounting ring (15) rotatably connected to the second mounting shaft (74) is fixed on one side of the third slide block (72); a groove ring is provided on one side of the mounting ring (15); a sealing cover (16) rotatably connected to the mounting ring (15) is fixed on the outer wall of the second mounting shaft (74); two connecting pipes (18) are connected through one side of the sealing cover (16); a hollow ring (17) connected to the connecting pipe (18) is fixed on the outer wall of the second mounting shaft (74); an air port of the air pump (14) is connected to the groove ring via a flexible air pipe, and the hollow ring (17) is connected to the inner tube (711) via a flexible air pipe.

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