Three-wheeled electric vehicle assembly performance testing device

Abstract

The invention belongs to the field of three-wheel electric vehicle performance testing, and particularly relates to a three-wheel electric vehicle component performance testing device which comprises three sets of testing rails and a weight box, the testing rails are arranged side by side, and the bottoms of the three sets of testing rails are jointly and fixedly connected with a rectangular supporting frame. A plurality of concave surface areas and a plurality of convex surface areas are arranged at the upper part of the test track, the plurality of concave surface areas and the plurality of convex surface areas are distributed in a staggered manner, an electric telescopic rod is arranged on the outer side of each of four corners of the support frame, telescopic ends of the four electric telescopic rods are jointly and fixedly connected with a rectangular fixed frame, and a sliding frame is movably arranged on the fixed frame. According to the invention, the test track can be simulated based on the real road driving condition of the three-wheeled electric vehicle, so that the frame and the suspension system in the three-wheeled frame assembly can fit the actual working state as much as possible during testing, and the real performance data of the three-wheeled frame assembly can be more fully and accurately tested.

Description

Technical Field

[0001] The invention belongs to the field of three-wheeled electric vehicle performance testing, and in particular relates to a three-wheeled electric vehicle component performance testing device. Background Art

[0002] A three-wheeled electric vehicle is a three-wheeled vehicle that is powered by electricity and is mainly used for short-distance transportation and personal travel. It is widely used in short-distance transportation areas such as families, urban and rural areas, and individual rentals.

[0003] During the production process of electric tricycles, multiple main structures and components need to be tested to ensure product quality and safety performance. For example, the wear resistance of the braking system, the durability of the motor system, the endurance of the battery system, the stability of the suspension system, and the strength of the frame structure are tested. When testing the suspension system of an electric tricycle, the suspension system is usually tested separately. After the suspension system is limited and fixed, the telescopic arm of the suspension system is cyclically pressurized through a pressure device, and the performance data during the test is recorded. When testing the frame of an electric tricycle, it is necessary to apply pressure to key parts of the frame to test its strength and rigidity.

[0004] At present, the above-mentioned performance test of the suspension system and frame of the electric tricycle still has the following shortcomings: 1. In the above-mentioned conventional method for testing the suspension system, the suspension system is usually in an unloaded state, and the pressure device is used to apply pressure to the telescopic arm in the unloaded state. However, when the suspension system is actually used, the suspension system will be assembled on the electric tricycle. At this time, the suspension system will be affected by the gravity of the electric tricycle itself and the gravity of the subsequent load-bearing personnel, so that before the suspension system takes effect, the springs and shock absorbers in the suspension system are in a certain compression state for a long time. When the subsequent frame collides, the actual working performance of the suspension system in this compression state facing the collision will have a large error with the performance shown during the suspension system test. 2. When the frame is in the actual working state, the impact force generated by the frame is transmitted to the frame through the wheels. In this process, the direction and intensity of the impact force transmitted by the wheels are affected by the vehicle speed, road unevenness and other conditions. There are many uncertain factors, which will make the strength and stiffness test data of the frame seriously inconsistent with the actual use situation, thereby causing adverse effects. Summary of the invention

[0005] In view of the above problems, an embodiment of the present application provides a three-wheeled electric vehicle component performance testing device, which can simulate the test track based on the actual road driving conditions of the three-wheeled electric vehicle, so that the frame and suspension system in the three-wheeled frame assembly can be as close to the actual working state as possible during the test, thereby being able to more fully and accurately test the real performance data of the three-wheeled frame assembly.

[0006] In order to achieve the above-mentioned objectives, the embodiments of the present application provide the following technical solutions: The present invention provides a three-wheeled electric vehicle component performance testing device, including test tracks and counterweight boxes, the test tracks are arranged in three groups in parallel, the bottoms of the three groups of test tracks are commonly fixedly connected to a rectangular support frame, the upper part of the test track is provided with multiple concave areas and multiple convex areas, the multiple concave areas and the multiple convex areas are staggered, and an electric telescopic rod is provided on the outer side of each of the four corners of the support frame, the telescopic ends of the four electric telescopic rods are commonly fixedly connected to a rectangular fixed frame, a slide is movably provided on the fixed frame, and a limit frame is provided at the lower end of the slide which can cooperate with the electric telescopic rod to lift the counterweight box, and the fixed frame is also provided with a first driving unit for driving the three-wheeled frame assembly and the slide to move along the length direction of the test track. The surface of each concave area of ​​the upper part of the test track is provided with a first groove, the cross section of the first groove is funnel-shaped, a support seat is arranged in the first groove, a second driving unit capable of driving the support seat to move up and down is arranged between the lower end of the support seat and the bottom of the test track, a sliding hole connected to the left and right is arranged on the outer wall of the upper end of the support seat, a plurality of first springs are arranged in the inner center area of ​​the sliding hole, a support plate is slidably arranged on both sides of the sliding hole, and the sides of the two support plates close to each other are fixedly connected to the corresponding ends of the plurality of first springs. The surface of each convex area of ​​the upper part of the test track is provided with a second groove, the test track is also provided with a strip groove connected with the second groove, a rotating shaft is arranged in the second groove and the strip groove for common rotation, a protrusion is fixed on the rotating shaft, a plurality of first motors are arranged on the side wall of the test track, and the output shaft of the first motor is connected to one end of the rotating shaft.

[0007] According to a favorable embodiment, the second driving unit includes a U-shaped mounting frame fixed to the bottom of the test track, a screw rod is rotatably arranged on the upper part of the horizontal section of the mounting frame, the upper end of the screw rod is threadedly connected to the lower end of the support seat, and the lower end of the support seat is also movably connected to two first guide rods, the lower ends of the two first guide rods are fixed to the upper part of the horizontal section of the mounting frame, and a second motor is fixed to the bottom of the horizontal section of the mounting frame, and the output shaft of the second motor is connected to the lower end of the screw rod.

[0008] According to a favorable embodiment, two movable cavities are provided on the front and rear inner walls of the second groove, an electromagnet is fixedly provided in the movable cavity, and an iron limit block is also slidably provided in the movable cavity, two second springs are fixedly connected to the side of the limit block close to the electromagnet, and the ends of the two second springs away from the limit block are fixedly connected to the inner wall of the movable cavity, and two limit holes matching the limit block are provided between the front and rear outer walls of the protrusion.

[0009] According to a favorable embodiment, both left and right ends of the three tracks are fixedly connected to a loading platform, and a ramp is provided on one side of the loading platform.

[0010] According to a favorable embodiment, the slide includes a horizontal plate movably arranged on the upper part of the fixed frame, a moving wheel is rotatably arranged at the front and rear ends of the horizontal plate, and a moving groove for rolling of the moving wheel is opened at the upper part of the front and rear ends of the fixed frame, four connecting plates are fixedly arranged on the upper part of the horizontal plate, and the bottom ends of the four connecting plates are fixedly connected to the limit frame, and a second guide rod is fixedly arranged between the inner walls on the left and right sides of the fixed frame, and the second guide rod is movably plugged into the bottom of the horizontal plate.

[0011] According to a favorable embodiment, the limit frame includes a rectangular limit frame movably mounted on the outside of the counterweight box, the upper part of the limit frame is fixedly connected to the lower end of the connecting plate, two limit rods are slidably inserted on the four sides of the limit frame, a third spring is fixedly mounted on the limit rod, one end of the two limit rods on the same side is commonly connected to a limit plate, and a pressure detector is provided on the side of the limit plate close to the counterweight box.

[0012] According to a favorable embodiment, the first driving unit includes two connecting shafts rotatably arranged on the left and right outer walls of the fixed frame respectively, a first wire roller is fixedly provided at the middle position of the connecting shaft, a first connecting rope is wound around the first wire roller, a U-shaped guide frame is fixedly connected to the bottom of the left and right sides of the fixed frame, a guide wheel that rolls and abuts against the first connecting rope is rotatably arranged on the horizontal section of the guide frame, second wire rollers are fixedly provided on the front and rear end surfaces of the connecting shaft, a second connecting rope is wound around the second wire roller, one end of the second connecting rope on the left and right sides is fixedly connected to the left and right outer walls of the cross plate respectively, two third motors are provided on the outer walls on either side of the front and rear of the fixed frame, and the output shaft of the third motor is fixedly connected to one end of the connecting shaft.

[0013] According to an advantageous embodiment, the counterweight box is composed of a metal outer frame and a transparent water tank, the outer frame is fixedly arranged on the lower end surface of the water tank, a water inlet is opened on the upper part of the water tank, a drain pipe with a sealing cover is arranged on the outer wall on any side of the four sides of the water tank, and an outer edge stop bar is fixedly arranged on the outer walls on the upper end of the outer frame. A camera facing the water tank is fixedly arranged between the two connecting plates at the front side.

[0014] Compared with the prior art, the three-wheeled electric vehicle component performance testing device provided by the embodiment of the present invention has the following beneficial effects:

[0015] 1. In the present invention, after the suspension system is assembled with the frame, the weight is counterbalanced by a counterweight box, which can simulate the actual pressure-bearing state of the frame and the suspension system, ensuring that the performance test of the frame and the suspension system can be carried out in a state closer to the actual working state, thereby improving the authenticity of the test data.

[0016] 2. In the present invention, a concave area and a convex area are set in the test track. The concave area can simulate the depression of the road and adjust the depression depth. At the same time, the convex area can simulate the convexity of the road, and both the convex area and the concave area can be converted into a plane state, so that the concave and convex and plane conditions in the test track can be combined and adjusted according to different test design methods, which is convenient for simulating different driving road surfaces for testing, so that when the moving wheels under the frame pass through the concave area or the convex area, it can more realistically reflect the state of the frame when it is impacted, and further improve the authenticity of the test of the three-wheel frame assembly.

[0017] 3. In the present invention, the limit frame can move synchronously with the counterweight box during the test, ensuring that the limit plate arranged on the inner side of the limit frame can limit the counterweight box during the test, preventing the counterweight box from falling off the frame due to excessive impact during the test, and the pressure detector on the limit plate can also record the pressure data in real time when the counterweight box shakes. At the same time, the camera arranged above the counterweight box can record the water situation inside the counterweight box during the test, so as to collect more test data as a reference for the performance of the suspension system, and assist the testers in making a more realistic judgment on the performance of the suspension system. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is the external overall three-dimensional structure diagram of the present invention.

[0019] Figure 2 It is the main view plan structure diagram of the present invention.

[0020] Figure 3 This is a top plan structural diagram of the test track of the present invention.

[0021] Figure 4 It is a connection structure diagram of the fixed frame, sliding frame, limiting frame and counterweight box in the present invention.

[0022] Figure 5 It is a structural diagram of the relative positions of the limit frame and the counterweight box in the present invention.

[0023] Figure 6 It is a main cross-sectional plan view of the test track in the present invention.

[0024] Figure 7 It is a main cross-sectional plan view of the structure of the concave area of ​​the test track in the present invention.

[0025] Figure 8 It is a main cross-sectional plan view of the structure of the test track convex area in the present invention.

[0026] Fig. 9 for Figure 8 Structural diagram after the middle bump is rotated 180°.

[0027] Fig.10 It is a side view cross-sectional plan view of the structure of the convex area of ​​the test track in the present invention.

[0028] Fig.11 for Fig.10 A magnified structural diagram of part A.

[0029] Reference numerals in the figure: 1, test track; 2, counterweight box; 201, outer frame; 202, water tank; 203, outer edge stop bar; 3, support frame; 4, concave area; 5, convex area; 6, electric telescopic rod; 7, fixed frame; 8, slide frame; 801, cross plate; 802, moving wheel; 803, connecting plate; 804, second guide rod; 9, limit frame; 901, limit frame; 902, limit rod; 903, third spring; 904, limit plate; 905, pressure detector; 10, first drive unit; 1001, connecting shaft; 1002, first line roller; 1003, first connecting rope; 1004, guide frame; 1 005, guide wheel; 1006, second line roller; 1007, second connecting rope; 1008, third motor; 11, first groove; 12, support seat; 13, second drive unit; 1301, mounting frame; 1302, screw; 1303, first guide rod; 1304, second motor; 14, first spring; 15, support plate; 16, second groove; 17, rotating shaft; 18, bump; 19, first motor; 20, movable cavity; 21, electromagnet; 22, limit block; 23, second spring; 24, limit hole; 25, loading platform; 26, ramp; 27, camera; 28, three-wheel frame assembly. DETAILED DESCRIPTION

[0030] The following is combined with Figure 1-11 The present application is further described in detail.

[0031] Please refer to Figure 1-Figure 3A three-wheeled electric vehicle component performance test device includes a test track 1 and a counterweight box 2. The test tracks 1 are arranged in three groups in parallel. The bottoms of the three groups of test tracks 1 are fixedly connected to a rectangular support frame 3. The left and right ends of the three tracks are fixedly connected to a loading platform 25, and a ramp 26 is arranged on one side of the loading platform 25. The upper part of the test track 1 is provided with a plurality of concave areas 4 and a plurality of convex areas 5, and the plurality of concave areas 4 and the plurality of convex areas 5 are staggered. An electric telescopic rod 6 is arranged on the outer side of the four corners of the support frame 3. The telescopic ends of the four electric telescopic rods 6 are fixedly connected to a rectangular fixed frame 7. A slide 8 is movably arranged on the fixed frame 7. The lower end of the slide 8 is provided with a limit frame 9 that can cooperate with the electric telescopic rod 6 to lift the counterweight box 2. The limit frame 9 is movably sleeved on the surface of the counterweight box 2. It should be noted that the frame of the tricycle is assembled with the suspension system to form a tricycle frame assembly 28. The fixed frame 7 is also provided with a first drive unit 10 for driving the tricycle frame assembly 28 and the slide 8 to move along the length direction of the test track 1. The tricycle frame assembly 28 is placed on three test tracks 1, so that the three tires at the bottom of the tricycle frame assembly 28 are respectively on different test tracks 1. The load is simulated by placing a counterweight block on the upper part of the tricycle frame assembly 28, and the tricycle frame assembly 28 is driven to move along the test track 1 by the first drive unit 10. At the same time, the test track 1 is composed of multiple different types of uneven sections through multiple concave areas 4 and convex areas 5 to simulate the actual driving road surface, and the performance of the tricycle frame assembly 28 is fully tested, so as to measure test data that is closer to the actual data.

[0032] See also Figure 6 and Figure 7The upper part of the test track 1 is provided with a first groove 11 on the surface of each concave area 4. The cross section of the first groove 11 is funnel-shaped. A support seat 12 is provided in the first groove 11. A second driving unit 13 capable of driving the support seat 12 to move up and down is provided between the lower end of the support seat 12 and the bottom of the test track 1. A sliding hole connected to the left and right is provided on the outer wall of the upper end of the support seat 12. A plurality of first springs 14 are provided in the inner center area of ​​the sliding hole. A support plate 15 is provided on both sides of the sliding hole. The sides of the two support plates 15 close to each other are fixedly connected to the corresponding ends of the plurality of first springs 14 respectively. The end of the support plate 15 close to the inner wall of the slope of the first groove 11 is also provided as a slope surface. The support plates 15 on the left and right sides of the support seat 12 fit the left and right slope inner walls of the first groove 11. The support seat 12 and the left and right support plates 15 form a support surface inside the first groove 11, which can support the tire when the tire moves and sinks into the first groove 11. The second driving unit 13 can drive the support base 12 to move up and down. When the support base 12 moves up and down, the support plates 15 on the left and right sides of the upper end of the support base 12 can automatically extend and retract to keep in contact with the left and right inner walls of the first groove 11.

[0033] See also Figure 6 and Figure 7 The second driving unit 13 includes a U-shaped mounting frame 1301 fixed at the bottom of the test track 1. A screw rod 1302 is rotatably arranged at the upper part of the horizontal section of the mounting frame 1301. The upper end of the screw rod 1302 is threadedly connected to the lower end of the support seat 12. The lower end of the support seat 12 is also movably connected to two first guide rods 1303. The lower ends of the two first guide rods 1303 are fixed at the upper part of the horizontal section of the mounting frame 1301. A second motor 1304 is fixed at the bottom of the horizontal section of the mounting frame 1301. The output shaft of the second motor 1304 is connected to the lower end of the screw rod 1302. The screw rod 1302 is driven to rotate by the second motor 1304, and the support seat 12 can move up and down with the cooperation of the two first guide rods 1303.

[0034] See also Figure 6 as well as Figure 8-Figure 10The upper part of the test track 1 is provided with a second groove 16 on the surface of each convex area 5. The test track 1 is also provided with a strip groove connected with the second groove 16. A rotating shaft 17 is provided in the second groove 16 and the strip groove to rotate together. A protrusion 18 is fixedly provided on the rotating shaft 17. A plurality of first motors 19 are provided on the side wall of the test track 1. The output shaft of the first motor 19 is connected to one end of the rotating shaft 17. The rotating shaft 17 can be driven by the first motor 19 to drive the protrusion 18 to rotate 180°, and the protrusion 18 originally protruding from the test track 1 is transferred to the second groove 16. Through the cooperation between the protrusion 18 and the second groove 16, the convex area 5 on the original test track 1 can be transformed into a planar state, realizing the back-and-forth switching between the planar and convex surfaces.

[0035] See also Figure 10-11 Two movable cavities 20 are provided on the front and rear inner side walls of the second groove 16, and a through electromagnet 21 is fixedly provided in the movable cavity 20, and an iron limit block 22 is also slidably provided in the movable cavity 20. Two second springs 23 are fixedly connected to the side of the limit block 22 close to the through electromagnet 21, and the ends of the two second springs 23 away from the limit block 22 are fixedly connected to the inner wall of the movable cavity 20, and two limit holes 24 matching the limit block 22 are provided between the front and rear outer side walls of the protrusion 18. When the protrusion 18 protrudes from the surface of the test track 1, the limit blocks 22 on the front and rear inner walls of the second groove 16 extend out from the active cavity 20 and are located at the bottom of the protrusion 18 to support the protrusion 18. When the protrusion 18 needs to rotate, the electromagnet 21 is energized to adsorb the limit blocks 22 back into the active cavity 20, so that the protrusion 18 can rotate 180°. After that, the electromagnet 21 is de-energized to lose the adsorption force on the limit blocks 22, so that the limit blocks 22 can move toward the outside of the active cavity 20 under the action of the second spring 23, and finally inserted into the limit holes 24 on the front and rear outer walls of the protrusion 18, and the protrusion 18 is limited and supported again to prevent the protrusion 18 from rotating when the tire is pressed on the surface of the protrusion 18.

[0036] In order to provide more road driving conditions during the test so as to test more real performance data of the three-wheel frame assembly 28, the second driving unit 13 drives the support seat 12 to move up and down, so that the support surface composed of the support seat 12 and the two support plates 15 in the first groove 11 can move up and down, so that the depth of the first groove 11 can be adjusted according to different test requirements, and the switching between the plane and the groove and the switching of different depths of the groove itself can be realized during the test. At the same time, the first motor 19 drives the protrusion 18 to rotate, so that after the protrusion 18 rotates 180°, the protrusion 18 originally protruding from the surface of the test track 1 shrinks into the second groove 16, and the originally protruding part is eliminated, so as to realize the mutual switching between the protrusion and the plane. The multiple concave areas 4 and convex areas 5 on the entire test track 1 can be combined into different simulated roads for testing as needed, so as to obtain more performance test data under different driving conditions as a reference, and the test is more flexible and comprehensive, so as to rely on sufficient test data to have a more comprehensive understanding of the performance of the three-wheel frame assembly 28.

[0037] See also Figure 4 and Figure 5 The slide 8 includes a horizontal plate 801 movably arranged on the upper part of the fixed frame 7, a moving wheel 802 is rotatably arranged at both the front and rear ends of the horizontal plate 801, and a moving groove for the moving wheel 802 to roll is opened at both the front and rear ends of the fixed frame 7. Four connecting plates 803 are fixedly arranged on the upper part of the horizontal plate 801, and the bottom ends of the four connecting plates 803 are fixedly connected to the limiting frame 9. A second guide rod 804 is fixedly arranged between the inner walls on the left and right sides of the fixed frame 7, and the second guide rod 804 is movably plugged with the bottom of the horizontal plate 801. The slide 8 can slide above the fixed frame 7 through the moving wheel 802, and the slide 8 is limited by the second guide rod 804 to improve the stability during sliding.

[0038] See also Figure 1 and Figure 4The first driving unit 10 includes two connecting shafts 1001 which are rotatably arranged on the outer walls of the left and right sides of the fixed frame 7 respectively, a first line roller 1002 is fixedly arranged in the middle position of the connecting shaft 1001, a first connecting rope 1003 is wound around the first line roller 1002, a U-shaped guide frame 1004 is fixedly connected to the bottom of the left and right sides of the fixed frame 7, a guide wheel 1005 which is rotatably arranged on the horizontal section of the guide frame 1004 and is in rolling contact with the first connecting rope 1003, second line rollers 1006 are fixedly arranged on the front and rear end surfaces of the connecting shaft 1001, a second connecting rope 1007 is wound around the second line roller 1006, one end of the second connecting rope 1007 on the left and right sides is fixedly connected to the left and right outer walls of the horizontal plate 801 respectively, two third motors 1008 are arranged on the outer walls on either side of the front and rear of the fixed frame 7, and the output shaft of the third motor 1008 is fixedly connected to one end of the connecting shaft 1001. Before the test, the left and right first connecting ropes 1003 are respectively fixedly connected to the head and tail ends of the three-wheel frame assembly 28 to ensure that the first connecting ropes 1003 are in a stretched state, and the third motor 1008 is started to drive the connecting shaft 1001 and the first line roller 1002 and the second line roller 1006 thereon to rotate. At the same time, the left and right second connecting ropes 1007 are fixedly connected to the left and right outer walls of the slide 8. When the three-wheel frame assembly 28 is moved by pulling the first connecting rope 1003, the second connecting rope 1007 can synchronously pull the slide 8 and the limiting frame 9 below to move, so that the limiting frame 9 can be in a relatively static state with the counterweight box 2 placed on the three-wheel frame assembly 28 when moving smoothly.

[0039] See also Figure 5 The counterweight box 2 is composed of a metal outer frame 201 and a transparent water tank 202. The outer frame 201 is fixed to the lower surface of the water tank 202. A water inlet is provided at the upper part of the water tank 202. A drain pipe with a sealing cover is provided on the outer wall of any side of the water tank 202. An outer edge stop bar 203 is fixed on the outer wall of the upper end of the outer frame 201. A camera 27 facing the water tank 202 is fixed between the two connecting plates 803 at the front side.

[0040] See also Figure 4 and Figure 5 The limit frame 9 includes a rectangular limit frame 901 movably mounted on the outside of the outer frame 201. The upper part of the limit frame 901 is fixedly connected to the lower end of the connecting plate 803. Two limit rods 902 are slidably inserted on the four sides of the limit frame 901. A third spring 903 is fixedly mounted on the limit rod 902. One end of the two limit rods 902 on the same side is commonly connected to a limit plate 904. A pressure detector 905 is provided on the side of the limit plate 904 close to the counterweight box 2.

[0041] In order to facilitate the detection of the shaking of the counterweight box 2 during the test of the three-wheel frame assembly 28, the limit frame 9 and the three-wheel frame assembly 28 are driven by the first drive unit 10 at the same time, so that the three-wheel frame assembly 28 can maintain a relatively static state with the limit frame 9 when moving, and the limit frame 901 is sleeved on the outside of the counterweight box 2, and the four limit plates 904 are close to the four side outer walls of the counterweight box 2. When the three-wheel frame assembly 28 carries the counterweight box 2 to move and shakes, the counterweight box 2 will offset relative to the three-wheel frame assembly 28. At this time, one side outer wall or both sides of the counterweight box 2 may contact the corresponding limit plate 904. The limit plate 904 can prevent the counterweight box 2 from tipping over when shaking. At the same time, the pressure detector 905 on the limit plate 904 can record the pressure size data, providing a reference for judging the performance of the suspension system.

[0042] In order to conveniently change the weight of the counterweight box 2 and observe the stability of the counterweight box 2 after the weight is changed, the water tank 202 inside the counterweight box 2 can be filled with water and drained as needed to control the weight. During the test, the tester can observe the shaking of the water in the counterweight box 2, and can also record it with the assistance of the camera 27, which can also provide reference data for judging whether the horizontal and vertical suspension system of the tricycle frame assembly 28 is qualified. After the test, the water in the counterweight box 2 is drained, and then the counterweight box 2 is placed directly below the limit frame 9, and then the electric telescopic rod 6 is extended to drive the limit frame 9 to move up. During the movement of the limit frame 9, the four limit plates 904 in the limit frame 9 can abut against the outer edge bars 203 on the four sides of the counterweight box 2, so that the counterweight box 2 in the unloaded state is lifted to a certain height by lifting the outer edge bars 203, and the counterweight box 2 is folded.

[0043] During the specific work, before the test, various basic parameters of the three-wheel frame assembly 28 (such as the horizontality and thickness of the frame) are measured in advance, and then the assembled three-wheel frame assembly 28 is pushed from the ramp platform 26 to the predetermined position on the loading platform 25. The electric telescopic rod 6 is retracted. At this time, the limit frame 9 originally at a high position is moved downward, thereby driving the counterweight box 2 to move downward, so that the counterweight box 2 is placed in the appropriate position of the three-wheel frame assembly 28 below.

[0044] When performing a static strength test on the tricycle frame assembly 28, the tester injects a certain amount of water into the counterweight box 2, and then observes and measures the tricycle frame assembly 28 after keeping it for a certain period of time to check the deformation of the tricycle frame.

[0045] When the dynamic strength test of the tricycle frame assembly 28 is performed, when the limiting frame 9 drives the counterweight box 2 to move downward, the limiting frame 9 will be set on the outside of the counterweight box 2, and the guide wheels 1005 located at the left and right ends of the fixed frame 7 will move downward accordingly, so that the guide wheels 1005 are at the same level as much as possible with the tricycle frame assembly 28. The first connecting rope 1003 at the left end is fixedly connected to the tail of the tricycle frame assembly 28, and the first connecting rope 1003 at the right end is fixedly connected to the head of the tricycle frame assembly 28. After the two first connecting ropes 1003 are connected to the tricycle frame assembly 28, they are kept as straight as possible. The preparation work before testing the tricycle frame assembly 28 is completed.

[0046] During the test, the left and right third motors 1008 synchronously drive the corresponding connecting shafts 1001 to rotate, so that the left and right connecting shafts 1001 rotate, so that one first connecting rope 1003 releases the line, and the other first connecting rope 1003 retracts the line, pulling the tricycle frame assembly 28 to move, and at the same time, the upper slide 8 can be synchronously moved with the tricycle frame assembly 28 through the left and right two second connecting ropes 1007, so that the limit frame 9 below the slide 8 can maintain a relatively static state with the counterweight box 2 during movement. When the tricycle frame assembly 28 is just started, the tester assists the tricycle frame assembly 28 to ensure that the three tires of the tricycle frame assembly 28 enter the corresponding test track 1 respectively, and then the tricycle frame assembly 28 moves back and forth in the three test tracks 1. During the test, the concave area 4 in the test track 1 can not only provide a concave road surface state for the test, but also can freely switch the depth of the concave road surface according to the test setting during the test. Similarly, the convex area 5 in the test track 1 can switch between convex and flat according to the test setting. Thus, it is possible to simulate the driving road surface under different conditions according to the test needs. After the three-wheel frame assembly 28 is controlled to move on the test track 1 for a certain period of time, the various parameters of the three-wheel frame assembly 28 are measured for a second time, and compared with the data before the measurement, to determine the pressure-bearing performance of the frame and suspension system of the three-wheel frame assembly 28 under different conditions. At the same time, during the test, the pressure detector 905 can also collect the pressure changes of the limit plate 904 and the counterweight box 2 during the test. At the same time, the camera 27 on the counterweight box 2 can record the shaking of the water inside the counterweight box 2, and can provide more test data to assist in determining the performance of the three-wheel frame assembly 28.

[0047] The above descriptions are merely embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A three-wheeled electric vehicle component performance testing device, comprising a test track (1) and a counterweight box (2), Features: The test tracks (1) are arranged in parallel into three groups, the bottoms of the three groups of test tracks (1) are commonly fixedly connected to a rectangular support frame (3), the upper part of the test track (1) is provided with a plurality of concave areas (4) and a plurality of convex areas (5), the plurality of concave areas (4) and the plurality of convex areas (5) are staggeredly distributed, an electric telescopic rod (6) is arranged on the outer side of each of the four corners of the support frame (3), the telescopic ends of the four electric telescopic rods (6) are commonly fixedly connected to a rectangular fixed frame (7), a slide frame (8) is movably arranged on the fixed frame (7), a limit frame (9) is arranged at the lower end of the slide frame (8) and can cooperate with the electric telescopic rod (6) to lift the counterweight box (2), and a first drive unit (10) is also arranged on the fixed frame (7) for driving the three-wheeled frame assembly (28) and the slide frame (8) to move along the length direction of the test track (1); The upper part of the test track (1) is provided with a first groove (11) on the surface of each concave area (4), the cross section of the first groove (11) is funnel-shaped, a support seat (12) is arranged in the first groove (11), a second driving unit (13) capable of driving the support seat (12) to move up and down is arranged between the lower end of the support seat (12) and the bottom of the test track (1), a sliding hole connected to the left and right is arranged on the outer wall of the upper end of the support seat (12), a plurality of first springs (14) are arranged in the inner central area of ​​the sliding hole, a support plate (15) is slidably arranged on both sides of the sliding hole, and the sides of the two support plates (15) close to each other are fixedly connected to the corresponding ends of the plurality of first springs (14) respectively; The upper part of the test track (1) is provided with a second groove (16) on the surface of each convex area (5), and the test track (1) is also provided with a strip groove connected with the second groove (16). A rotating shaft (17) is provided in the second groove (16) and the strip groove for co-rotation, and a protrusion (18) is fixedly provided on the rotating shaft (17). A plurality of first motors (19) are provided on the side wall of the test track (1), and the output shaft of the first motor (19) is connected to one end of the rotating shaft (17).

2. A three-wheeled electric vehicle component performance testing device according to claim 1, It is characterized in that The second driving unit (13) comprises a U-shaped mounting frame (1301) fixedly mounted at the bottom of the test track (1); a screw rod (1302) is rotatably arranged at the upper part of the horizontal section of the mounting frame (1301); the upper end of the screw rod (1302) is threadedly connected to the lower end of the support seat (12); the lower end of the support seat (12) is also movably connected to two first guide rods (1303); the lower ends of the two first guide rods (1303) are fixedly mounted at the upper part of the horizontal section of the mounting frame (1301); a second motor (1304) is fixedly mounted at the bottom of the horizontal section of the mounting frame (1301); and the output shaft of the second motor (1304) is connected to the lower end of the screw rod (1302).

3. A three-wheeled electric vehicle component performance testing device according to claim 1, It is characterized in that Two movable cavities (20) are provided on the front and rear inner side walls of the second groove (16), an electromagnet (21) is fixedly provided in the movable cavity (20), and an iron limit block (22) is also slidably provided in the movable cavity (20), two second springs (23) are fixedly connected to the side of the limit block (22) close to the electromagnet (21), and the ends of the two second springs (23) away from the limit block (22) are fixedly connected to the inner wall of the movable cavity (20), and two limit holes (24) matching the limit block (22) are provided between the front and rear outer side walls of the protrusion (18).

4. A three-wheeled electric vehicle component performance testing device according to claim 2, It is characterized in that The left and right ends of the three tracks are both fixedly connected to a loading platform (25), and a ramp (26) is arranged on one side of the loading platform (25).

5. A three-wheeled electric vehicle component performance testing device according to claim 1, It is characterized in that The slide frame (8) comprises a transverse plate (801) movably arranged on the upper part of the fixed frame (7); a moving wheel (802) is rotatably arranged at both the front and rear ends of the transverse plate (801); a moving groove for the moving wheel (802) to roll is provided at both the front and rear ends of the upper part of the fixed frame (7); four connecting plates (803) are fixedly arranged on the upper part of the transverse plate (801); the bottom ends of the four connecting plates (803) are fixedly connected to the limiting frame (9); a second guide rod (804) is fixedly arranged between the inner walls on the left and right sides of the fixed frame (7); the second guide rod (804) is movably plugged into the bottom of the transverse plate (801).

6. A three-wheeled electric vehicle component performance testing device according to claim 5, It is characterized in that The limit frame (9) comprises a rectangular limit frame (901) movably mounted on the outside of the counterweight box (2); the upper part of the limit frame (901) is fixedly connected to the lower end of the connecting plate (803); two limit rods (902) are slidably inserted on the four sides of the limit frame (901); a third spring (903) is fixedly mounted on the limit rod (902); one end of the two limit rods (902) on the same side is commonly connected to a limit plate (904); and a pressure detector (905) is provided on the side of the limit plate (904) close to the configuration box (2).

7. A three-wheeled electric vehicle component performance testing device according to claim 5, It is characterized in that The first driving unit (10) comprises two connecting shafts (1001) rotatably arranged on the outer walls of the left and right sides of the fixed frame (7), a first wire roller (1002) is fixedly arranged in the middle position of the connecting shaft (1001), a first connecting rope (1003) is wound around the first wire roller (1002), a U-shaped guide frame (1004) is fixedly connected to the bottom of the left and right sides of the fixed frame (7), and a horizontal section of the guide frame (1004) is rotatably arranged with a first connecting rope (1003) that is in rolling contact with the first connecting rope (1003) A guide wheel (1005), second line rollers (1006) are fixedly provided on the front and rear end surfaces of the connecting shaft (1001), a second connecting rope (1007) is wound around the second line roller (1006), one end of the second connecting rope (1007) on the left and right sides is respectively fixedly connected to the left and right outer walls of the horizontal plate (801), two third motors (1008) are provided on the outer walls on either side of the front and rear of the fixing frame (7), and the output shaft of the third motor (1008) is fixedly connected to one end of the connecting shaft (1001).

8. A three-wheeled electric vehicle component performance testing device according to claim 5, It is characterized in that The counterweight box (2) is composed of an outer frame (201) made of metal and a transparent water tank (202); the outer frame (201) is fixedly arranged on the lower end surface of the water tank (202); a water inlet is provided on the upper part of the water tank (202); a drain pipe with a sealing cover is provided on the outer wall on any side of the four sides of the water tank (202); an outer edge retaining strip (203) is fixedly arranged on the outer walls on all four sides of the upper end of the outer frame (201); and a camera (27) facing the water tank (202) is fixedly arranged between the two connecting plates (803) on the front side.

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