Vehicle roof frame strength test device and test method

Abstract

The invention discloses a vehicle top cover frame strength test device and test method, relates to the technical field of vehicle top cover frame strength test, and aims to solve the technical problem that the vehicle top cover frame test cost is increased due to the fact that various test devices are needed during static and dynamic tests. A test mechanism is arranged between the two arc-shaped brackets; the test mechanism comprises a test cylinder, an adjusting assembly, a stabilizing assembly and a clamping assembly; and the test cylinder is arranged between the two arc-shaped brackets. The test mechanism is arranged, acting force is applied to the test head through the ropes at the two ends of the test cylinder, two different static and dynamic test functions can be achieved, meanwhile, the test direction can be adjusted through the adjusting assembly, then the multi-angle test effect is achieved, the accuracy of the test result can be improved, and the stability of the test result can be improved through the stabilizing assembly. A stable effect is provided for the test cylinder, and the reliability of the device on the vehicle top cover frame test is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of vehicle roof frame strength testing, and more specifically, to a vehicle roof frame strength testing device and a testing method. Background Art

[0002] In the field of automotive engineering, the vehicle roof frame, as an important part of the vehicle body structure, plays a key role in the safety, reliability and comfort of the vehicle. With the rapid development of the automotive industry and the continuous improvement of consumers' requirements for automobile quality, ensuring that the vehicle roof frame has sufficient strength has become one of the core concerns in the automotive design and manufacturing process. At present, there are two different test methods for the strength test of vehicle roof: static and dynamic. As a result, different test equipment needs to be used for static and dynamic tests on the vehicle roof frame, thereby increasing the test cost of the vehicle roof frame. In view of this, we propose a vehicle roof frame strength test device and test method. Summary of the invention

[0003] The purpose of the present invention is to provide a vehicle roof frame strength test device and test method to solve the technical problem of needing to use multiple test equipment during static and dynamic tests, thereby increasing the vehicle roof frame test cost.

[0004] In order to solve the above technical problems, the present invention provides the following technical solutions: a vehicle roof frame strength test device, comprising two arc-shaped brackets, a test mechanism is arranged between the two arc-shaped brackets; The test mechanism comprises a test cylinder, an adjustment component, a stabilizing component and a clamping component; the test cylinder is arranged between two arc-shaped brackets, the adjustment component is fixed on the side surface of the test cylinder, the stabilizing component is fixed on the top of the arc-shaped bracket, and the clamping component is movably arranged on the inner walls on both sides of the arc-shaped bracket; The inner wall of the test cylinder is symmetrically connected to a track, a test head is movably sleeved inside the test cylinder, a plurality of first pulleys are connected to the side surface of the test head relative to the track, the end surface of the test head is symmetrically fixedly connected to two first support rods, the two opposite ends of the first support rods are connected by a second support rod, and two first rollers are movably connected to the inner walls on both sides of each of the second support rods, a counterweight block is movably sleeved on the top of the test head, and a first tension spring is movably sleeved on the inner wall of the counterweight block, a plurality of first motors are fixedly connected to the end surface of the test cylinder, and the first motors are distributed in an annular array, and a first winding drum is fixedly connected to the output end of each of the first motors, a plurality of notches are respectively opened at both ends of the test cylinder, and the notches are distributed in an annular array, and the inner walls on both sides of each notch are movably connected Two second pulleys are connected, and a first rope is movably sleeved on the side surface of each of the first winding drums. A plurality of second motors are fixedly connected to the bottom of the test cylinder, and a second winding drum is fixedly connected to the output end of each of the second motors, and the second winding drum corresponds to the position of the slot, and a second rope is movably sleeved on the side surface of each of the second winding drums. A driving unit is arranged on the side surface of the test cylinder. The present invention can realize two different test functions, static and dynamic, by setting a test mechanism and applying force to the test head through the ropes at both ends of the test cylinder. At the same time, the test direction can be adjusted by adjusting the component, thereby realizing multi-angle test effect, which can improve the accuracy of the test result, and the stabilizing component can provide a stabilizing effect to the test cylinder, which is beneficial to improving the reliability of the device for testing the vehicle roof frame.

[0005] Preferably, the side surface of the test cylinder is symmetrically structured and fixedly connected with a first tooth plate, the inner wall of the test cylinder is symmetrically structured and provided with a movable groove, and the first roller is slidably connected to the inner wall of one side of the movable groove.

[0006] Preferably, arc-shaped grooves are respectively formed on opposite sides of the two arc-shaped brackets, sliding grooves are respectively formed on opposite sides of the two arc-shaped brackets, and an arc-shaped tooth plate is fixedly connected to the inner wall of one side of each sliding groove.

[0007] Preferably, the adjustment assembly includes two protective plates, and the two protective plates are respectively movably sleeved inside the two arc-shaped grooves, and the two protective plates are fixedly connected to two third motors on the side away from the test cylinder, and each third motor output end is fixedly connected to a gear cylinder, and every two gear cylinders are meshingly connected to the arc-shaped gear plate, and every two gear cylinders are movably connected to a triangular plate on the side close to the test head, and the two triangular plates are respectively fixedly connected to the adjustment motors on the side away from the test cylinder, and the side surfaces of the two adjustment motors are movably sleeved with stabilizing cylinders, and the inner walls on both sides of the two stabilizing cylinders are respectively movably connected to two transmission cylinders.

[0008] Preferably, the driving unit comprises a fixed frame, the fixed frame is drivingly connected to the two adjusting motors, a first frame is fixedly connected to the top of the fixed frame, and a worm is movably connected to the first frame and the fixed frame in a symmetrical structure.

[0009] Preferably, the tops of the two worm gears are fixedly connected with a first transmission wheel, the top of the first frame is symmetrically structured and fixedly connected with a limit box, the tops of the two limit boxes are fixedly connected with a transmission motor, and the inner walls on both sides of each limit box are movably connected with three second transmission wheels, and the side surfaces of the first transmission wheel and the second transmission wheel are movably sleeved with a transmission belt.

[0010] Preferably, the stabilizing assembly comprises two fixing frames, which are respectively fixedly connected to the tops of the two arc-shaped brackets, and the opposite sides of the two fixing frames are respectively fixedly connected with first limit blocks, and the opposite sides of the two first limit blocks are respectively movably sleeved with the limit frames, and the limit frames are movably connected to the fixed frames.

[0011] Preferably, the clamping assembly includes four mounting grooves, and every two mounting grooves are respectively opened on the inner walls on both sides of the arc-shaped bracket, and the inner walls on both sides of each mounting groove are movably connected with a cylinder, and the inner walls on both sides of each mounting groove are movably connected with an electric push rod, and the output end of the cylinder is movably connected with a pressure plate, and a second tension spring is fixedly connected to one side of the pressure plate.

[0012] A test method for a vehicle roof frame strength test device comprises the following steps: S1. Vehicle roof test preparation: Check the vehicle roof for defects, deformation and damage, and clean the vehicle roof to ensure the reliability of the test structure, and move the vehicle into two arc-shaped brackets; S2. Vehicle roof strength test; S2.1. Vehicle clamping and fixing: When the vehicle is moved inside the two arc-shaped brackets, the electric push rod can drive the cylinder to move through the external control system, so that the cylinder output end is adjusted to the vehicle tire, and the cylinder drives the pressure plate to move to the vehicle tire, so that the four pressure plates are respectively fitted with the four vehicle tires to achieve the vehicle fixing effect; S2.2. Adjust the test direction and test distance: After the vehicle is clamped, the third motor is operated through the external circuit mechanism, and the third motor drives the gear cylinder to rotate. Since the gear cylinder is meshed and connected with the arc-shaped toothed plate, the gear cylinder drives the protective plate to move inside the arc-shaped groove, and then drives the fixed frame to tilt through the triangular plate to adjust the direction of the test cylinder. When adjusting the direction of the test cylinder, the first limit block slides inside the limit frame to improve stability and prevent the test cylinder from collapsing due to tilting. When adjusting the distance between the test cylinder and the vehicle roof, the transmission motor first drives one of the second transmission wheels through the external circuit mechanism, and then drives the other second transmission wheels and the first transmission wheel to rotate through the transmission belt, so that the worm rotates. Since the worm is meshed and connected with the first toothed plate, the test cylinder is driven to move up and down, thereby adjusting the distance between the test cylinder and the vehicle roof; S2.3, static and dynamic tests: In static tests, the second motor is first driven by an external circuit mechanism to drive the second winding drum to wind up the second rope, so that the test head slides inside the test cylinder, wherein the first pulley and the first roller move inside the test cylinder, so that the test head can stably slide inside the test cylinder, the output end of the test head contacts the vehicle roof, and the second motor continuously applies force to the second rope, so that the test head performs pressure detection on the vehicle roof, wherein the output end of the test head is composed of other components such as pressure sensors to realize the function of static tests, and in dynamic tests, first pass The transmission motor drives the worm to move the test cylinder upward, and the test position is adjusted by the adjustment component, and then the first motor drives the first winding drum to wind up the first rope through the external circuit mechanism. The test head slides inside the test cylinder through the first pulley and the first roller and moves to the specified position. The first motor is stopped to make the test head move downward inside the test cylinder and hit the vehicle roof to realize the dynamic vehicle roof test function. During the downward movement of the test head, it contacts the vehicle roof. In order to avoid the test head from rebounding, the first tension spring applies a force to the counterweight block, which can buffer part of the force of the counterweight block.

[0013] Compared with the prior art, the present invention has the following beneficial effects: 1. The present invention sets up a test mechanism and applies forces to the test head through ropes at both ends of the test cylinder, thereby realizing two different test functions, static and dynamic. At the same time, the test direction can be adjusted by adjusting the components, thereby realizing multi-angle test effects, which can improve the accuracy of the test results. Moreover, the test cylinder is provided with a stable effect through the stabilizing component, which is beneficial to improving the reliability of the device for testing the vehicle roof frame.

[0014] 2. The present invention drives the gear cylinder through the third motor to mesh with the arc-shaped toothed plate, so that the protective plate moves in an arc shape, and then slides on the surface of the arc-shaped bracket through the transmission cylinder, thereby achieving stability of the adjusting motor and preventing the adjusting motor from contacting with the arc-shaped bracket, which causes wear of the adjusting motor and is beneficial to improving the service life of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention.

[0016] Figure 2 It is a schematic cross-sectional view of the overall structure of the present invention.

[0017] Figure 3 For the present invention Figure 2 A in the figure is an enlarged structural diagram.

[0018] Figure 4 It is a schematic diagram of a three-dimensional partially enlarged structure of the clamping assembly of the present invention.

[0019] Figure 5 It is a schematic diagram of a three-dimensional enlarged structure of a driving unit of the present invention.

[0020] Figure 6 For the present invention Figure 5 The enlarged structural diagram at B in FIG.

[0021] Figure 7 For the present invention Figure 5 The enlarged structural diagram at C in the figure.

[0022] Figure 8 It is a three-dimensional partial enlarged structural schematic diagram of the test mechanism of the present invention, so as to show the three-dimensional structure of the test cylinder.

[0023] Fig. 9 It is a three-dimensional enlarged structural schematic diagram of the clamping assembly of the present invention.

[0024] Fig.10 For the present invention Fig. 9 The enlarged structural diagram at D in the figure.

[0025] Explanation of the reference numerals in the figure: 1. arc-shaped bracket; 101. arc-shaped groove; 102. slide groove; 103. arc-shaped tooth plate; 2. test mechanism; 201. test cylinder; 201a. first tooth plate; 201b. movable groove; 202. track; 203. test head; 204. first pulley; 205. first support rod; 206. second support rod; 207. first roller; 208. counterweight; 209. first tension spring; 210. first motor; 211. first take-up drum; 212. notch; 213. second pulley; 214. first rope; 215. second motor; 216. second take-up drum; 217. second rope; 3. adjustment group Components; 301, protective plate; 302, third motor; 303, gear cylinder; 304, triangle plate; 305, adjustment motor; 306, stabilizing cylinder; 307, transmission cylinder; 4, stabilizing assembly; 401, fixed frame; 402, first limit block; 403, limit frame; 5, clamping assembly; 501, mounting slot; 502, cylinder; 503, electric push rod; 504, pressure plate; 505, second tension spring; 6, driving unit; 601, fixed frame; 602, first frame; 603, worm; 604, first transmission wheel; 605, limit box; 606, transmission motor; 607, second transmission wheel; 608, transmission belt. DETAILED DESCRIPTION

[0026] Embodiment 1, as Figure 1 , Figure 2 , Figure 3 , Figure 8 , Fig. 9 and Fig.10 As shown, the present invention relates to a vehicle roof frame strength test device, comprising two arc-shaped brackets 1, and a test mechanism 2 is arranged between the two arc-shaped brackets 1; The test mechanism 2 includes a test cylinder 201, an adjustment component 3, a stabilizing component 4 and a clamping component 5; the test cylinder 201 is arranged between two arc-shaped brackets 1, the adjustment component 3 is fixed on the side surface of the test cylinder 201, the stabilizing component 4 is fixed on the top of the arc-shaped bracket 1, and the clamping component 5 is movably arranged on the inner walls of both sides of the arc-shaped bracket 1; The inner wall of the test cylinder 201 is symmetrically structured and fixedly connected to the track 202. A test head 203 is movably sleeved inside the test cylinder 201. It is worth noting that a pressure sensor is provided at the output end of the test head 203. The pressure sensor is used to measure the pressure applied to the test piece. The side surface of the test head 203 is connected to / has a plurality of first pulleys 204 relative to the track 202, and the first pulleys 204 are movably connected to the track 202. The end surfaces of the test head 203 are symmetrically structured and fixedly connected to two first support rods 205. The ends of the two opposite first support rods 205 are connected by a second support rod 206. The inner walls on both sides of each second support rod 206 are movably connected to two first rollers 207 by a second latch. A counterweight block 208 is movably sleeved on the top of the test head 203. A first tension spring 209 is movably sleeved on the inner wall of the counterweight block 208. The first tension spring 209 is fixedly connected to the counterweight block 208 and the test head 203, respectively. The end surface of the test cylinder 201 is fixedly connected to a plurality of first motors through a first bracket. 210, and the first motors 210 are arranged in a circular array, and the output end of each first motor 210 is fixedly connected to a first winding drum 211, and a plurality of slots 212 are respectively opened at both ends of the test cylinder 201, and the slots 212 are arranged in a circular array, and the inner walls on both sides of each slot 212 are movably connected to two second pulleys 213 through a third latch, and a first rope 214 is movably sleeved on the side surface of each first winding drum 211, and a plurality of first ropes 214 are fixedly connected to the test head 203, and the test cylinder 2 01 The bottom is fixedly connected with a plurality of second motors 215 through a second support plate, and the output end of each second motor 215 is fixedly connected with a second winding drum 216, and the second winding drum 216 corresponds to the position of the slot 212, and a second rope 217 is movably sleeved on the side surface of each second winding drum 216, and the second rope 217 is fixedly connected to the test head 203, the first rope 214 and the second rope 217 are respectively in movably contact with the second pulley 213, and a driving unit 6 is arranged on the side surface of the test cylinder 201.

[0027] In an embodiment of the present invention, Figure 8 As shown, the side surface of the test cylinder 201 is symmetrically structured and fixedly connected with a first tooth plate 201a, the inner wall of the test cylinder 201 is symmetrically structured and provided with a movable groove 201b, and the first roller 207 is slidably connected to the inner wall of one side of the movable groove 201b.

[0028] In an embodiment of the present invention, Fig. 9 As shown, arc grooves 101 are respectively opened on opposite sides of the two arc brackets 1 , and sliding grooves 102 are respectively opened on opposite sides of the two arc brackets 1 , and an arc tooth plate 103 is fixedly connected to the inner wall of one side of each sliding groove 102 .

[0029] As another embodiment of the present invention, Figure 4 and Figure 6As shown, the adjustment component 3 includes two protective plates 301, and the two protective plates 301 are movably sleeved in the two arc grooves 101 respectively. Two third motors 302 are fixedly connected to the side of the two protective plates 301 away from the test cylinder 201, and each third motor 302 is fixedly connected to the output end of each third motor 302. Every two gear cylinders 303 are meshingly connected to the arc gear plate 103, and every two gear cylinders 303 are movably connected to a triangular plate 304 on the side close to the test head 203 through a second plug rod. The two triangular plates 304 are fixedly connected to the side away from the test cylinder 201 with adjustment motors 305 respectively, and stabilizing cylinders 306 are movably sleeved on the side surfaces of the two adjustment motors 305. The inner walls of the two stabilizing cylinders 306 are movably connected to two transmission cylinders 307 through third plug rods, and every two transmission cylinders 307 are movably contacted with the arc bracket 1.

[0030] As another embodiment of the present invention, Figure 5 , Figure 6 and Figure 7 As shown, the driving unit 6 includes a fixed frame 601, which is transmission-connected to two adjusting motors 305, a first frame 602 is fixedly connected to the top of the fixed frame 601, the first frame 602 and the fixed frame 601 are symmetrically structured, and a worm 603 is movably connected to them through a fifth plug rod, and the worm 603 is meshingly connected to the first tooth plate 201a, a first transmission wheel 604 is fixedly connected to the tops of two fifth plug rods, a limit box 605 is fixedly connected to the tops of the first frame 602 in a symmetrical structure, a transmission motor 606 is fixedly connected to the tops of the two limit boxes 605, and three second transmission wheels 607 are movably connected to the inner walls of both sides of each limit box 605 through a sixth plug rod, and one of the sixth plug rods is fixedly connected to the output end of the transmission motor 606, and a transmission belt 608 is movably sleeved on the side surfaces of the first transmission wheel 604 and the second transmission wheel 607.

[0031] As another embodiment of the present invention, Figure 5 and Figure 7 As shown, the stabilizing assembly 4 includes two fixing frames 401, and the two fixing frames 401 are respectively fixedly connected to the tops of the two arc-shaped brackets 1, and the opposite sides of the two fixing frames 401 are respectively fixedly connected with the first limit blocks 402 through the fourth pin, and the opposite sides of the two first limit blocks 402 are respectively movably connected with the limit frames 403, and the limit frames 403 are movably connected to the fixed frame 601 through the fifth pin.

[0032] As another embodiment of the present invention, Figure 4 and Fig. 9As shown, the clamping assembly 5 includes four mounting grooves 501, and every two mounting grooves 501 are respectively opened on the inner walls on both sides of the arc-shaped bracket 1, and the inner walls on both sides of each mounting groove 501 are movably connected to the cylinder 502 through the seventh plug rod, and the inner walls on both sides of each mounting groove 501 are movably connected to the electric push rod 503 through the eighth plug rod, and the output end of the electric push rod 503 is movably connected to one side of the cylinder 502 through the sixth pin, and the output end of the cylinder 502 is movably connected to the pressure plate 504 through the seventh pin, and one side of the pressure plate 504 is fixedly connected to the second tension spring 505, and the second tension spring 505 is fixedly connected to the output end of the cylinder 502.

[0033] Embodiment 2: A test method for a vehicle roof frame strength test device, comprising the following steps: S1. Vehicle roof test preparation: Check the vehicle roof for defects, deformation and damage, and clean the vehicle roof to ensure the reliability of the test structure, and move the vehicle into the two arc-shaped brackets 1; S2. Vehicle roof strength test; S2.1. Vehicle clamping and fixing: When the vehicle is moved to the inside of the two arc-shaped brackets 1, the electric push rod 503 can drive the cylinder 502 to move through the external control system, so that the output end of the cylinder 502 is adjusted to the vehicle tire, and the cylinder 502 drives the pressure plate 504 to move to the vehicle tire, so that the four pressure plates 504 are respectively fitted with the four vehicle tires to achieve the vehicle fixing effect; S2.2. Adjust the test direction and test distance: After the vehicle is clamped, the third motor 302 is operated through the external circuit mechanism, and the third motor 302 drives the gear cylinder 303 to rotate. Since the gear cylinder 303 is meshed and connected with the arc-shaped toothed plate 103, the gear cylinder 303 drives the protective plate 301 to move inside the arc-shaped groove 101. Then, the fixing frame 601 is driven to tilt through the triangular plate 304 to adjust the direction of the test cylinder 201. When adjusting the direction of the test cylinder 201, the first limit block 402 slides inside the limit frame 403, which can improve stability and prevent the test cylinder 201 from collapsing due to tilting. When adjusting the distance between the test cylinder 201 and the vehicle roof, the transmission motor 606 is first driven by the external circuit mechanism to drive one of the second transmission wheels 607, and then the transmission belt 608 drives the other second transmission wheels 607 and the first transmission wheel 604 to rotate, so that the worm 603 rotates. Since the worm 603 is meshed and connected with the first tooth plate 201a, the test cylinder 201 is driven to move up and down, thereby adjusting the distance between the test cylinder 201 and the vehicle roof. S2.3, static and dynamic tests: During the static test, the second motor 215 is firstly driven by the external circuit mechanism to drive the second winding drum 216 to wind up the second rope 217, so that the test head 203 slides inside the test cylinder 201, wherein the first pulley 204 and the first roller 207 move inside the test cylinder 201, so that the test head 203 can stably slide inside the test cylinder 201, and the output end of the test head 203 contacts the vehicle roof, and the second motor 215 continuously applies a force to the second rope 217, so that the test head 203 performs pressure detection on the vehicle roof, wherein the output end of the test head 203 is composed of other components such as a pressure sensor to realize the function of the static test, and during the dynamic test, the transmission motor 60 is firstly driven to drive the second rope 217 ... 6 drives the worm 603 to move the test cylinder 201 upward, and adjusts the test position through the adjustment component 3, and then through the external circuit mechanism, the first motor 210 drives the first winding drum 211 to wind up the first rope 214, and the test head 203 slides inside the test cylinder 201 through the first pulley 204 and the first roller 207 to move to the specified position, and the first motor 210 stops working, so that the test head 203 moves downward inside the test cylinder 201, and the test head 203 hits the vehicle roof to realize the dynamic vehicle roof test function, wherein, during the downward movement of the test head 203, it contacts the vehicle roof, and in order to prevent the test head 203 from rebounding, the first tension spring 209 applies a force to the counterweight block 208, which can buffer part of the force of the counterweight block 208.

[0034] The embodiments of the present invention disclose preferred embodiments, but are not limited thereto. A person skilled in the art can easily understand the spirit of the present invention based on the above embodiments and make different extensions and changes. However, as long as they do not deviate from the spirit of the present invention, they are all within the protection scope of the present invention.

Claims

1. A vehicle roof frame strength test device, characterized in that: It comprises two arc-shaped brackets (1), with a testing mechanism (2) being arranged between the two arc-shaped brackets (1); The test mechanism (2) comprises a test cylinder (201), an adjustment component (3), a stabilizing component (4) and a clamping component (5); the test cylinder (201) is arranged between two arc-shaped brackets (1), the adjustment component (3) is fixedly arranged on the side surface of the test cylinder (201), the stabilizing component (4) is fixedly arranged on the top of the arc-shaped bracket (1), and the clamping component (5) is movably arranged on the inner walls of both sides of the arc-shaped bracket (1); The inner wall of the test cylinder (201) is symmetrically structured and fixedly connected to a track (202); a test head (203) is movably sleeved inside the test cylinder (201); a plurality of first pulleys (204) are connected to the side surface of the test head (203) at a position relative to the track (202); the end surface of the test head (203) is symmetrically structured and fixedly connected to two first support rods (205); the two opposite ends of the first support rods (205) are connected via a second support rod (206); the inner walls of both sides of each second support rod (206) are movably connected to two first rollers (207); a counterweight (208) is movably sleeved on the top of the test head (203); a first tension spring (209) is movably sleeved on the inner wall of the counterweight (208); a plurality of first motors (210) are fixedly connected to the end surface of the test cylinder (201); and the first motors (21 0) are arranged in a circular array, the output end of each of the first motors (210) is fixedly connected to a first winding drum (211), a plurality of slots (212) are respectively provided at both ends of the test cylinder (201), and the slots (212) are arranged in a circular array, two second pulleys (213) are movably connected to the inner walls on both sides of each of the slots (212), a first rope (214) is movably sleeved on the side surface of each of the first winding drums (211), a plurality of second motors (215) are fixedly connected to the bottom of the test cylinder (201), the output end of each of the second motors (215) is fixedly connected to a second winding drum (216), and the second winding drum (216) corresponds to the slot (212), a second rope (217) is movably sleeved on the side surface of each of the second winding drums (216), and a driving unit (6) is arranged on the side surface of the test cylinder (201).

2. A vehicle roof frame strength testing device according to claim 1, characterized in that: The side surface of the test cylinder (201) is symmetrically structured and fixedly connected to a first tooth plate (201a); the inner wall of the test cylinder (201) is symmetrically structured and provided with a movable groove (201b); and the first roller (207) is slidably connected to the inner wall of one side of the movable groove (201b).

3. A vehicle roof frame strength testing device according to claim 2, characterized in that: An arc-shaped groove (101) is respectively formed on one side opposite to the two arc-shaped brackets (1), and a slide groove (102) is respectively formed on one side opposite to the two arc-shaped brackets (1). An arc-shaped tooth plate (103) is fixedly connected to the inner wall of one side of each slide groove (102).

4. A vehicle roof frame strength testing device according to claim 3, characterized in that: The adjustment assembly (3) comprises two protection plates (301), the two protection plates (301) are respectively movably sleeved inside the two arc-shaped grooves (101), the two protection plates (301) are fixedly connected to two third motors (302) on the side away from the test cylinder (201), the output end of each third motor (302) is fixedly connected to a gear cylinder (303), and every two gear cylinders (303) are meshingly connected to the arc-shaped gear plate (103), the side of every two gear cylinders (303) close to the test head (203) is commonly movably connected to a triangular plate (304), the two triangular plates (304) are respectively fixedly connected to an adjustment motor (305) on the side surface of the two adjustment motors (305), and the inner walls on both sides of the two stabilizing cylinders (306) are respectively movably connected to two transmission cylinders (307).

5. A vehicle roof frame strength testing device according to claim 4, characterized in that: The driving unit (6) comprises a fixed frame (601), the fixed frame (601) being drivingly connected to two adjusting motors (305), a first frame (602) being fixedly connected to the top of the fixed frame (601), and a worm (603) being movably connected to the first frame (602) and the fixed frame (601) in a symmetrical structure.

6. A vehicle roof frame strength testing device according to claim 5, characterized in that: The tops of the two worm gears (603) are fixedly connected to a first transmission wheel (604); the top of the first frame (602) is symmetrically structured and fixedly connected to a limit box (605); the tops of the two limit boxes (605) are fixedly connected to a transmission motor (606); the inner walls of both sides of each limit box (605) are movably connected to three second transmission wheels (607); and the side surfaces of the first transmission wheel (604) and the second transmission wheel (607) are movably sleeved with a transmission belt (608).

7. A vehicle roof frame strength testing device according to claim 6, characterized in that: The stabilizing assembly (4) comprises two fixing frames (401), the two fixing frames (401) being fixedly connected to the tops of the two arc-shaped brackets (1) respectively, the first limiting blocks (402) being fixedly connected to opposite sides of the two fixing frames (401) respectively, the limiting frames (403) being movably sleeved to opposite sides of the two first limiting blocks (402), and the limiting frames (403) being movably connected to the fixing frame (601).

8. A vehicle roof frame strength testing device according to claim 7, characterized in that: The clamping assembly (5) comprises four mounting grooves (501), each two of the mounting grooves (501) are respectively arranged on the inner walls on both sides of the arc-shaped bracket (1), the inner walls on both sides of each mounting groove (501) are movably connected to a cylinder (502), the inner walls on both sides of each mounting groove (501) are movably connected to an electric push rod (503), the output end of the cylinder (502) is movably connected to a pressure plate (504), and one side of the pressure plate (504) is fixedly connected to a second tension spring (505).

9. The testing method of a vehicle roof frame strength testing device according to claim 8, characterized in that: The following steps are involved: S1. Vehicle roof test preparation: Check the vehicle roof for defects, deformation and damage, and clean the vehicle roof to ensure the reliability of the test structure, and move the vehicle into the two arc-shaped brackets (1); S2. Vehicle roof strength test; S2.

1. Vehicle clamping and fixing: When the vehicle is moved into the two arc-shaped brackets (1), the electric push rod (503) can drive the cylinder (502) to move through the external control system, so that the output end of the cylinder (502) is adjusted to the vehicle tire, and the cylinder (502) drives the pressure plate (504) to move toward the vehicle tire, so that the four pressure plates (504) are respectively fitted with the four vehicle tires, thereby achieving the vehicle fixing effect; S2.

2. Adjust the test direction and test distance: After the vehicle is clamped, the third motor (302) is operated through the external circuit mechanism, and the third motor (302) drives the gear cylinder (303) to rotate. Since the gear cylinder (303) is meshed and connected with the arc-shaped toothed plate (103), the gear cylinder (303) drives the protective plate (301) to move inside the arc-shaped groove (101). The fixing frame (601) is then driven to tilt through the triangular plate (304) to adjust the direction of the test cylinder (201). When adjusting the direction of the test cylinder (201), the first limit block (402) slides inside the limit frame (403), thereby improving stability and preventing the test cylinder (201) from collapsing due to tilting. When adjusting the distance between the test cylinder (201) and the top cover of the vehicle, the transmission motor (606) is first driven by the external circuit mechanism to drive one of the second transmission wheels (607), and then the other second transmission wheels (607) and the first transmission wheel (604) are driven to rotate through the transmission belt (608), so that the worm (603) rotates. Since the worm (603) is meshedly connected with the first tooth plate (201a), the test cylinder (201) is driven to move up and down, thereby adjusting the distance between the test cylinder (201) and the top cover of the vehicle.

10. The testing method of a vehicle roof frame strength testing device according to claim 9, characterized in that: The following steps are also included: S2.3, static and dynamic tests: During the static test, the second motor (215) is first driven by the external circuit mechanism to drive the second winding drum (216) to wind up the second rope (217), so that the test head (203) slides inside the test cylinder (201), wherein the first pulley (204) and the first roller (207) move inside the test cylinder (201), so that the test head (203) can stably slide inside the test cylinder (201), and the output end of the test head (203) contacts the vehicle roof, and the second motor (215) continuously applies a force to the second rope (217), so that the test head (203) performs pressure detection on the vehicle roof, thereby realizing the function of the static test. During the dynamic test, the transmission motor (606) is first used to drive the worm (603), so that the test cylinder (2 01) moves upward, and adjusts the test position through the adjustment component (3), and then through the external circuit mechanism, the first motor (210) drives the first winding drum (211) to reel the first rope (214), and the test head (203) slides inside the test cylinder (201) through the first pulley (204) and the first roller (207) to move to a specified position, and the first motor (210) stops working, so that the test head (203) moves downward inside the test cylinder (201), and the test head (203) hits the vehicle roof to realize the dynamic vehicle roof test function, wherein, during the downward movement of the test head (203), it contacts the vehicle roof, and in order to prevent the test head (203) from rebounding, a force is applied to the counterweight block (208) through the first tension spring (209), which can buffer part of the force of the counterweight block (208).

Images