Intensity detection device for dashboard production

Abstract

The invention relates to the field of automobile manufacturing, in particular to a strength detection device for dashboard production. The strength detection device for instrument panel production comprises a detection platform, a supporting plate, an arc-shaped fixing piece, a clamping assembly, a cam ring and a driving assembly, driving equipment is installed above the detection platform, the output end of the driving equipment is connected with a pressing plate through a ball head, the supporting plate is arranged above the detection platform, and the interior of the supporting plate is rotationally connected with a placement plate. According to the strength detection device for dashboard production, through the design of the driving assembly and the cam ring, the supporting plate regularly swings around the supporting column, the dashboard at the top of the placement plate synchronously swings under the condition that the pressing plate keeps stable pressure, multi-angle alternating stress caused by jolting and collision in the running process of an automobile is simulated, and the stability of the dashboard production is improved. The stress conditions of the instrument panel at different angles are comprehensively evaluated, the detection dimension is more comprehensive, and the data is closer to the actual application scene.

Description

Technical Field

[0001] This invention relates to the field of automobile manufacturing, and more particularly to a strength testing device for dashboard production. Background Technology

[0002] As an information display component in the automotive field, the structural strength of the dashboard is directly related to the safety and stability of the equipment operation. During the driving process, the dashboard must withstand multiple external forces such as bumps and vibrations, temperature changes and accidental collisions. Therefore, during the dashboard production process, strict strength testing is required to screen out products that meet quality standards and avoid safety accidents or equipment failures caused by insufficient structural strength.

[0003] As the requirements for equipment safety in end-use applications continue to increase, the market has placed higher demands on the accuracy and comprehensiveness of instrument panel strength testing. However, existing instrument panel strength testing devices generally suffer from problems such as single testing dimensions and incomplete data coverage, making it difficult to meet the testing needs in complex scenarios. Current mainstream testing equipment typically adopts a testing mode with a fixed worktable and unidirectional pressure. After the instrument panel to be tested is fixed on the horizontal worktable with a clamp, a driving device drives the pressure plate to apply pressure to the surface or edge of the instrument panel from the vertical direction. The deformation threshold or destructive load of the instrument panel is recorded by a pressure sensor or displacement sensor. This detection mode has obvious limitations: the direction of the detection force is fixed, and it cannot simulate the multi-angle force scenarios in actual applications. For example, a car dashboard may be subjected to oblique impact force during a collision, and may be subjected to alternating stress at multiple angles due to vibration during driving. However, the existing device can only detect the force in one direction, resulting in a large deviation between the detection results and the actual operating conditions, and it cannot accurately reflect the structural strength of the dashboard under complex stress.

[0004] Therefore, it is necessary to provide a new strength testing device for instrument panel production to solve the above-mentioned technical problems. Summary of the Invention

[0005] To solve the above-mentioned technical problems, the present invention provides a strength testing device for instrument panel production.

[0006] The strength testing device for instrument panel production provided by this invention includes: a testing platform, a support plate, arc-shaped fixing parts, a clamping assembly, a cam ring, and a drive assembly. A drive device is installed above the testing platform, and the output end of the drive device is connected to a pressure plate via a ball joint. A support plate is provided above the testing platform, and a placement plate is rotatably connected inside the support plate. Four sets of arc-shaped fixing parts for fixing the instrument panel to be tested are provided on the top of the placement plate. A clamping assembly is installed between the placement plate and the arc-shaped fixing parts. The clamping assembly drives two mutually symmetrical arc-shaped fixing parts to move relative to each other to clamp the instrument panel to be tested. A cam ring is fixedly installed at the bottom of the support plate. A drive assembly is installed between the testing platform and the cam ring. The drive assembly drives the cam to swing regularly around its axis to detect the force on the instrument panel at different angles.

[0007] Preferably, the drive assembly includes a motor, a drive gear, and a driven gear. The motor is fixedly connected inside the detection platform, the output end of the motor is fixedly connected to the drive gear, and the driven gear meshes with one side of the drive gear. A support column is fixedly connected inside the detection platform, and the bottom end of the support plate is installed in conjunction with the top end of the support column through a ball joint. The driven gear is sleeved on the outside of the support column and is rotatably connected to its outer wall.

[0008] Preferably, three extrusion rollers are provided above the driven gear, and the three extrusion rollers are distributed in an equilateral triangle. The bottom of two extrusion rollers is rotatably connected to a connecting sleeve, and the bottom of the other extrusion roller is rotatably connected to a support rod. The bottom end of the support rod is fixedly connected to the top of the driven gear. A spring is fixedly connected to the inner wall of each connecting sleeve, and a slide rod is fixedly connected to the bottom end of each spring. The slide rod is slidably connected to the inner wall of the corresponding connecting sleeve, and the bottom end of each slide rod is fixedly connected to the top of the driven gear. All three extrusion rollers are in contact with the bottom outer wall of the cam ring.

[0009] Preferably, the clamping assembly includes: a gear 1, a first connecting rack, a second connecting rack, and a spring 2. Two gears 1 are rotatably connected at the inner axis of the placement plate. The longitudinal sides of the gear 1 near the upper end are engaged with the first connecting rack, and the ends of the first connecting rack that are far apart from each other are rotatably connected to the corresponding arc-shaped fixing members. The transverse sides of the gear 1 near the lower end are engaged with the second connecting rack, and the ends of the second connecting racks that are far apart from each other are rotatably connected to the corresponding arc-shaped fixing members. The outer walls of the first and second connecting racks are fixedly connected with spring 2, and the other ends of spring 2 are fixedly connected to the inner wall of the placement plate. The installation direction of spring 2 is consistent with the installation direction of the corresponding connecting rack.

[0010] Preferably, a knob is rotatably connected to the inside of the side of the placement plate near the rotatable connection with the support plate. A second gear is fixedly connected to the bottom of the knob. A third connecting rack is meshed on both sides of the second gear. A trapezoidal block is fixedly connected to the ends of the third connecting rack that are far apart from each other.

[0011] Preferably, the sidewalls of the first and second connecting racks are provided with slots at equal intervals. The interior of the placement plate is symmetrically connected with push rods. The ends of the push rods are fixedly connected with a locking block that matches the slot. Each push rod is fitted with a spring. One end of the spring is fixedly connected to the outer wall of the push rod, and the other end contacts the inner wall of the placement plate. The end of the push rod away from the locking block is spherical and contacts the corresponding trapezoidal block.

[0012] Preferably, an L-shaped rod is fixedly connected to the middle of each of the third connecting racks, and a second locking block that matches the locking slot is fixedly connected to the other end of each L-shaped rod.

[0013] Preferably, the knob has an internal mounting groove, the inner wall of which is fixedly connected to a spring four, and the other end of the spring four is fixedly connected to a spherical locking block. The placement plate has two spherical grooves corresponding to the spherical locking blocks, and the spherical locking blocks engage with at least one of the spherical grooves.

[0014] Preferably, the support plate has symmetrical clearance grooves on the side away from the rotational connection with the placement plate, and an electric push rod is fixedly connected to the side wall of the detection platform. The output end of the electric push rod is symmetrically fixedly connected to a trapezoidal top plate corresponding to the clearance groove.

[0015] Preferably, tension springs are symmetrically fixedly connected to the bottom of the support plate, and the other end of the tension springs is fixedly connected to the top of the placement plate.

[0016] Compared with related technologies, the strength testing device for instrument panel production provided by the present invention has the following advantages: By designing the drive components and cam ring, the support plate is made to swing regularly around the support column, so that the instrument panel on the top of the plate swings synchronously while the pressure plate maintains stable pressure. This simulates the multi-angle alternating stress caused by bumps and collisions during car driving, and comprehensively evaluates the force on the instrument panel at different angles. The detection dimensions are more comprehensive and the data is closer to the actual application scenario. By using arc-shaped fasteners in conjunction with clamping components, precise fixation of instrument panels of different sizes is achieved. The operator pulls on the arc-shaped fasteners, which in turn moves the first and second connecting racks that are rotatably connected to them. This causes the first gear to rotate, allowing the longitudinal and lateral arc-shaped fasteners to open synchronously to fit the size of the instrument panel. After the arc-shaped fasteners are released, the compressed spring releases its elastic potential energy, pushing the racks to move towards each other. This causes the four arc-shaped fasteners to elastically clamp the instrument panel in the center of the placement plate, making it adaptable to instrument panels of different shapes and sizes and improving the versatility of the device. The design of the first and second locking blocks locks the first and second connecting racks, ensuring the stability of the clamping force of the four arc-shaped fixing parts on the instrument panel, preventing loosening during testing, and ensuring the stability and accuracy of the testing process. The trapezoidal top plate is moved by an electric push rod, which lifts the placement plate to an inclined position. Operators can easily place the instrument panel to be tested from above the inclined surface, avoiding the inconvenience of bending over to place it in a horizontal position. After the test is completed, the placement plate is returned to the inclined position by the electric push rod, making it easy to remove the tested instrument panel. The operation is convenient and improves work efficiency. Attached Figure Description

[0017] Figure 1 A schematic diagram of the strength testing device for instrument panel manufacturing provided by the present invention; Figure 2 for Figure 1 The diagram shows a cross-sectional view of the detection platform. Figure 3 for Figure 2 The diagram shows a partial cross-sectional view of the detection platform. Figure 4 for Figure 3 The diagram shows the structure at point A. Figure 5 for Figure 3 The diagram shows the structure of the placement plate. Figure 6 for Figure 5 The diagram shows the internal structure of the placement plate. Figure 7 for Figure 6 The diagram shows the structure at point B. Figure 8 for Figure 6 The diagram shows the structure at point C. Figure 9 for Figure 6 The diagram shows a top view of the placement plate. Figure 10 for Figure 9 The diagram shows the structure at point D. Figure 11 for Figure 9 The schematic diagram of the support plate shown Figure 12 for Figure 3 The diagram shows the structural schematic of the side of the testing platform. Figure 13 for Figure 5 The diagram shows the structure of the bottom of the support plate.

[0018] The diagram shows the following components: 1. Testing platform; 2. Drive device; 3. Pressure plate; 4. Support plate; 5. Placement plate; 6. Arc-shaped fixing component; 7. Cam ring; 8. Motor; 9. Drive gear; 10. Driven gear; 11. Support column; 12. Extrusion roller; 13. Connecting sleeve; 14. Support rod; 15. Spring 1; 16. Slide rod; 17. Gear 1; 18. First connecting rack; 19. Second connecting rack; 20. Spring 2; 21. Knob; 22. Gear 2; 23. Third connecting rack; 24. Trapezoidal block; 25. Slot; 26. Top rod; 27. Block 1; 28. Spring 3; 29. ​​L-shaped rod; 30. Block 2; 31. Spring 4; 32. Spherical block; 33. Electric push rod; 34. Trapezoidal top plate; 35. Tension spring. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0020] The specific implementation of the present invention will be described in detail below with reference to specific embodiments.

[0021] Example 1 Please see Figures 1 to 13 A strength testing device for instrument panel production is disclosed. The device comprises a testing platform 1, a support plate 4, an arc-shaped fixing component 6, a clamping assembly, a cam ring 7, and a drive assembly. A drive device 2 is mounted above the testing platform 1. The drive device 2 is a readily available and mature servo electric cylinder, which combines the advantages of high force accuracy, precise displacement control, and integration with automated systems, perfectly meeting the high-precision and automated requirements of modern instrument panel strength testing. The output end of the drive device 2 is connected to a pressure plate 3 via a ball joint. A support plate 4 is located above the testing platform 1. The internal rotating connection is a placement plate 5. The top of the placement plate 5 is provided with four sets of arc-shaped fixing parts 6 for fixing the instrument panel to be tested. A clamping assembly is installed between the placement plate 5 and the arc-shaped fixing parts 6. The clamping assembly drives two mutually symmetrical arc-shaped fixing parts 6 to move relative to each other to clamp the instrument panel to be tested. A cam ring 7 is fixedly installed at the bottom of the support plate 4. A drive assembly is installed between the test platform 1 and the cam ring 7. The drive assembly drives the cam ring 7 to swing regularly around its axis to detect the force on the instrument panel at different angles. Both ends of the arc-shaped fixing parts 6 are covered with rubber pads.

[0022] The drive assembly includes a motor 8, a drive gear 9, and a driven gear 10. The motor 8 is fixedly connected inside the detection platform 1. The drive gear 9 is fixedly connected to the output end of the motor 8. The driven gear 10 is meshed on one side of the drive gear 9. A support column 11 is fixedly connected inside the detection platform 1. The bottom end of the support plate 4 is installed by a ball joint with the top end of the support column 11. The driven gear 10 is sleeved on the outside of the support column 11 and is rotatably connected to its outer wall.

[0023] Three extrusion rollers 12 are provided above the driven gear 10, and the three extrusion rollers 12 are distributed in an equilateral triangle. The bottom of two extrusion rollers 12 are rotatably connected to connecting sleeves 13, and the bottom of the other extrusion roller 12 is rotatably connected to a support rod 14. The bottom end of the support rod 14 is fixedly connected to the top of the driven gear 10. The inner wall of each connecting sleeve 13 is fixedly connected to a spring 15, and the bottom end of each spring 15 is fixedly connected to a sliding rod 16. The sliding rod 16 is slidably connected to the inner wall of the corresponding connecting sleeve 13, and the bottom end of each sliding rod 16 is fixedly connected to the top of the driven gear 10. All three extrusion rollers 12 are in contact with the bottom outer wall of the cam ring 7.

[0024] The support plate 4 has symmetrical clearance grooves on the side away from the rotational connection with the placement plate 5. The side wall of the detection platform 1 is fixedly connected to an electric push rod 33. The output end of the electric push rod 33 is symmetrically fixedly connected to a trapezoidal top plate 34 corresponding to the clearance groove.

[0025] A tension spring 35 is symmetrically fixedly connected to the bottom of the support plate 4, and the other end of the tension spring 35 is fixedly connected to the top of the placement plate 5.

[0026] Example 2 Please see Figures 5 to 12 The clamping assembly includes: a gear 17, a first connecting rack 18, a second connecting rack 19, and a spring 20. Two gears 17 are rotatably connected to the inner axis of the placement plate 5. The first connecting rack 18 is engaged on both longitudinal sides of the gear 17 near the top. The ends of the first connecting rack 18 that are far apart from each other are rotatably connected to the corresponding arc-shaped fixing parts 6. The second connecting rack 19 is engaged on both transverse sides of the gear 17 near the bottom. The ends of the second connecting rack 19 that are far apart from each other are rotatably connected to the corresponding arc-shaped fixing parts 6. The spring 20 is fixedly connected to the outer wall of both the first connecting rack 18 and the second connecting rack 19. The other end of the spring 20 is fixedly connected to the inner wall of the placement plate 5, and the installation direction of the spring 20 is consistent with the installation direction of the corresponding connecting rack.

[0027] A knob 21 is rotatably connected to the inside of the placement plate 5 near the rotatable connection point with the support plate 4. A gear 22 is fixedly connected to the bottom of the knob 21. A third connecting rack 23 is meshed on both sides of the gear 22. A trapezoidal block 24 is fixedly connected to the ends of the third connecting rack 23 that are far apart from each other.

[0028] The first connecting rack 18 and the second connecting rack 19 are both provided with slots 25 at equal intervals on their side walls. The inside of the placement plate 5 is symmetrically connected to a top rod 26. The end of each top rod 26 is fixedly connected to a locking block 27 that matches the slot 25. Each top rod 26 is fitted with a spring 28. One end of the spring 28 is fixedly connected to the outer wall of the top rod 26, and the other end is in contact with the inner wall of the placement plate 5. The end of the top rod 26 away from the locking block 27 is spherical and in contact with the corresponding trapezoidal block 24.

[0029] The middle part of the third connecting rack 23 is fixedly connected to an L-shaped rod 29, and the other end of the L-shaped rod 29 is fixedly connected to a second locking block 30 that matches the locking slot 25.

[0030] The knob 21 has an internal mounting groove, and a spring 31 is fixedly connected to the inner wall of the mounting groove. The other end of the spring 31 is fixedly connected to a spherical locking block 32. The placement plate 5 has two spherical grooves corresponding to the spherical locking block 32, and the spherical locking block 32 engages with at least one of the spherical grooves.

[0031] The working principle of the strength testing device for instrument panel production provided by this invention is as follows: Before the device is started, the placement plate 5 is in the initial state of being horizontally embedded in the groove of the support plate 4. In order to facilitate the operator to place the instrument panel to be tested, the placement plate 5 needs to be adjusted to an inclined position by using the electric push rod 33. The specific process is as follows: The electric push rod 33, fixed to the side wall of the detection platform 1, extends horizontally from its output end, causing the trapezoidal top plate 34, which is symmetrically fixed at its end, to move synchronously. Since the support plate 4 has a clearance groove on the side away from the rotational connection with the placement plate 5, the trapezoidal top plate 34 can pass smoothly through the clearance groove and gradually approach the side wall of the placement plate 5. After the inclined surface of the trapezoidal top plate 34 contacts the side wall of the placement plate 5, as the electric push rod 33 continues to extend, the inclined surface generates an upward squeezing force, pushing the placement plate 5 to rotate around the rotational connection with the support plate 4. At the same time, the tension spring 35, which is symmetrically fixed at the bottom of the support plate 4, is gradually stretched and stores elastic potential energy. The electric push rod 33 continues to run to the preset stroke, lifting the placement plate 5 to an inclined state. At this time, the operator can easily put the instrument panel to be tested from above the inclined surface, avoiding the inconvenience of bending over to place it in a horizontal state. After the placement plate 5 is kept in an inclined position, the instrument panel needs to be precisely fixed in the center of the placement plate 5 by the cooperation of the arc-shaped fixing piece 6 and the clamping assembly to prevent shaking during the test. The specific steps are as follows: The operator first contacts the bottom of the instrument panel with one of the four arc-shaped fixing parts 6 near the bottom of the placement plate 5 and applies a downward pushing force. After the arc-shaped fixing part 6 is subjected to force, it drives the first connecting rack 18 rotatably connected to it to move downward along the internal guide rail of the placement plate 5. Since the first connecting rack 18 meshes with the gear 17 near the top, the gear 17 rotates synchronously, thereby driving the other side of the first connecting rack 18 meshing with it to move upward in the opposite direction. Finally, the arc-shaped fixing part 6 near the top of the placement plate 5 moves upward synchronously with the rack. At this time, the two longitudinal arc-shaped fixing parts 6 are opened up and down to fit the longitudinal dimensions of the instrument panel. During this process, the "spring 20" fixed to the outer wall of the two first connecting racks 18 is compressed and stores elastic potential energy. Next, pull the arc-shaped fixing piece 6 near the right side of the placement plate 5 to the right. The arc-shaped fixing piece 6 drives the second connecting rack 19, which is rotatably connected to it, to move to the right along the guide rail. Since the second connecting rack 19 meshes with the gear 17 near the bottom, the gear 17 rotates synchronously, driving the other side of the second connecting rack 19 to move to the left in the opposite direction. This causes the arc-shaped fixing piece 6 near the left side of the placement plate 5 to move to the left synchronously with the rack. At this time, the two horizontal arc-shaped fixing pieces 6 are opened to the left and right to match the horizontal size of the instrument panel. During this process, the springs 20 on the outer walls of the two second connecting racks 19 are also compressed, further storing elastic potential energy. Place the instrument panel to be tested in the center of the area enclosed by the four arc-shaped fixing pieces 6, then release the right arc-shaped fixing piece 6. The compressed spring 20 releases its elastic potential energy, pushing the first longitudinal connecting rack 18 to move towards each other and the second transverse connecting rack 19 to move towards each other respectively. The four arc-shaped fixing pieces 6 move towards the center synchronously with the corresponding racks, elastically clamping the instrument panel in the center of the placement plate 5, completing the initial fixation. To prevent the arc-shaped fixing part 6 from shifting due to vibration or tilting of the instrument panel during testing, the locking structure needs to be driven by knob 21 to fix the positions of the first and second connecting racks 19. The specific process is as follows: The operator holds the knob 21 and rotates it 90° clockwise. The gear 22 fixed at the bottom of the knob 21 rotates synchronously. Since the gear 22 meshes with the horizontally distributed third connecting rack 23, the two third connecting racks 23 are brought closer together by the meshing force. The trapezoidal block 24 fixed at the end of the third connecting rack 23 moves synchronously. The inclined surface of the trapezoidal block 24 contacts and presses the end of the push rod 26 that slides symmetrically inside the placement plate 5. The push rod 26 moves towards the second connecting rack 19 under the pressure. The locking block 27 fixed at its end moves synchronously with the push rod 26 and finally embeds into the slot 25 on the side wall of the second connecting rack 19, thus locking the second connecting rack 19. During this process, the spring 28 sleeved on the outer wall of the push rod 26 is compressed and stores the reset potential energy. The L-shaped rod 29 fixed in the middle of the third connecting rack 23 moves towards the center synchronously with the third connecting rack 23. The second locking block 30 fixed at the other end of the L-shaped rod 29 moves with the L-shaped rod 29 and is embedded in the slot 25 on the side wall of the first connecting rack 18 to lock the first connecting rack 18. Through the double locking of the first locking block 27 and the second locking block 30, the positions of the first connecting rack 18 and the second connecting rack 19 are completely fixed, thereby ensuring that the clamping force of the four arc-shaped fixing parts 6 on the instrument panel is stable and preventing loosening during testing. During the rotation of knob 21, the spherical locking block 32 inside its mounting groove is squeezed by the inner wall of the spherical groove inside the placement plate 5. The spherical locking block 32 moves into the mounting groove and compresses the spring 4 31. When knob 21 rotates 90°, the spherical locking block 32 is aligned with another spherical groove. The spring 4 31 releases its elastic force to push the spherical locking block 32 into the spherical groove, thereby achieving mechanical positioning of knob 21 and preventing knob 21 from rotating on its own due to vibration during the testing process, which would cause locking failure. After the dashboard is fixed, the electric push rod 33 is activated to retract its output end, which drives the trapezoidal top plate 34 to move in the opposite direction along the original path and gradually detach from the contact with the side wall of the placement plate 5. At this time, the stretched tension spring 35 releases its tension and pulls the placement plate 5 to rotate in the opposite direction around the rotating connection until the placement plate 5 is re-embedded in the groove inside the support plate 4 and returns to a horizontal state, which is ready for subsequent strength testing. After the placement plate 5 returns to a horizontal position, the linkage between the pressure applied by the drive device 2 and the swinging motion of the support plate 4 driven by the drive component simulates the multi-angle stress scenario of the instrument panel in actual application, and completes the strength test. The specific steps are as follows: The drive device 2 installed on top of the detection platform 1 is activated. The drive device 2 is a servo electric cylinder, which can adapt to the requirements of detection accuracy and automation. The output end of the drive device 2 extends downward in the vertical direction, driving the pressure plate 3 connected to its end through a ball joint to descend synchronously. The ball joint connection design allows the pressure plate 3 to rotate adaptively with the tilt of the instrument panel surface, ensuring uniform contact between the pressure plate 3 and the instrument panel surface. After the pressure plate 3 contacts the instrument panel surface, the drive device 2 outputs a stable thrust to apply static pressure to the instrument panel. At the same time, the pressure sensor equipped with the device collects pressure data in real time, and the displacement sensor records the descent displacement of the pressure plate 3. The data is synchronously transmitted to the control system for storage. To simulate the multi-angle alternating stress caused by bumps and collisions during vehicle operation, the motor 8 inside the testing platform 1 is activated. This drives the support plate 4 to oscillate rhythmically around the support column 11 via the drive assembly. The specific process is as follows: The output of motor 8 drives its fixed drive gear 9 to rotate. The drive gear 9 meshes with the driven gear 10, causing the driven gear 10 to rotate around the support column 11. The driven gear 10 and the support column 11 are rotatably connected, ensuring that the driven gear 10 only rotates around the axis of the support column 11 and has no axial displacement. Two sliding rods 16 and a support rod 14 are fixed to the top of the driven gear 10. The three are arranged in an equilateral triangle to ensure balanced force. The squeeze roller 12, which is rotatably connected to the top of the support rod 14, is always in contact with the outer wall of the cam ring 7 fixed at the bottom of the support plate 4. A connecting sleeve 13 is sleeved on the outer wall of the two sliding rods 16. A spring 15 is fixed between the inner wall of the connecting sleeve 13 and the sliding rod 16. The squeeze roller 12, which is rotatably connected to the top of the connecting sleeve 13, is also in contact with the outer wall of the cam ring 7. As the driven gear 10 rotates, the support rod 14 and the two sliding rods 16 rotate accordingly, driving the three pressing rollers 12 to rotate synchronously. When the pressing roller 12 at the top of the support rod 14 rotates to the convex surface of the cam ring 7, the pressing roller 12 at the top of the connecting sleeve 13 is pressed by the convex surface of the cam ring 7, causing the connecting sleeve 13 to descend and compress the spring 15. Since the bottom of the support plate 4 is connected to the support column 11 through the ball joint, the pressing roller 12 at the top of the support rod 14 will drive the support plate 4 to swing around the ball joint of the support column 11 through the cam ring 7, causing the instrument panel on the top of the placement plate 5 to swing synchronously. Since the bottom end of the support plate 4 is installed in conjunction with the top end of the support column 11 through the ball joint, the cam ring 7, after being subjected to the alternating thrust of the compression roller 12, drives the support plate 4 to swing regularly around the support column 11. When the support plate 4 swings, the placement plate 5, the arc-shaped fixing piece 6, and the instrument panel swing synchronously with the support plate 4. At this time, the pressure plate 3 still maintains a stable pressure on the instrument panel, which is equivalent to the instrument panel bearing alternating stress during the swinging process, simulating the complex force scenario of the car driving. The sensor continuously records the pressure and deformation data under different swinging angles, forming three-dimensional detection data of angle-pressure-deformation, and comprehensively evaluating the structural strength of the instrument panel. After the strength test is completed, motor 8 is turned off, the drive gear 9 stops rotating, and the driven gear 10 and the three extrusion rollers 12 stop moving. Due to the symmetrical design of the cam ring 7, the extrusion roller 12 finally stops at the concave surface of the cam ring 7, and the support plate 4 returns to a horizontal state. The drive device 2 is turned off, and its output end drives the pressure plate 3 to move upward in the vertical direction, returning to the initial position and relieving the pressure on the instrument panel. The electric push rod 33 is activated, and the trapezoidal top plate 34 is pushed again to lift the placement plate 5 to an inclined state. The operator holds the knob 21 and rotates it counterclockwise by 90°, and the gear 22... Rotating counterclockwise causes the third connecting rack 23 to move away from each other, and the trapezoidal block 24 releases its pressure on the top rod 26; the compressed spring 3 28 releases its elasticity, pushing the top rod 26 to move in the opposite direction, and the locking block 1 27 disengages from the slot 25 of the second connecting rack 19; at the same time, the L-shaped rod 29 moves away with the third connecting rack 23, and the locking block 2 30 disengages from the slot 25 of the first connecting rack 18, releasing the locking of the first connecting rack 18 and the second connecting rack 19; after the knob 21 is rotated 90°, the spherical locking block 32 is inserted into the initial spherical groove under the action of the spring 4 31, and the knob 21 is positioned; The operator pulls the arc-shaped fixing piece 6 outward to release the four arc-shaped fixing pieces 6 from the clamp on the instrument panel, and removes the tested instrument panel from the tilted placement plate 5; the electric push rod 33 is turned off, the trapezoidal top plate 34 is reset, the tension spring 35 pulls the placement plate 5 to restore it to a horizontal state, and the device returns to the initial standby state, waiting for the next test.

[0032] All standard parts used in this invention can be purchased from the market, and irregular parts can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art. In addition, the circuit connection adopts conventional connection methods in the prior art, which will not be described in detail here.

[0033] The above description is merely an embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structural or procedural transformations made based on the content of the present invention specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of the present invention.

Claims

1. A strength testing device for instrument panel manufacturing, characterized in that, include: The testing platform (1) is equipped with a drive device (2) on top of the testing platform (1). The output end of the drive device (2) is connected to a pressure plate (3) via a ball joint. The support plate (4) is provided on top of the testing platform (1). The support plate (4) is rotatably connected to a placement plate (5). The arc-shaped fixing piece (6) is provided on the top of the placement plate (5) for fixing the instrument panel to be tested. The clamping assembly is installed between the placement plate (5) and the arc-shaped fixing piece (6). The clamping assembly drives two mutually symmetrical arc-shaped fixing pieces (6) to move relative to each other for clamping the instrument panel to be tested. The cam ring (7) is fixedly installed at the bottom of the support plate (4). The drive assembly is installed between the testing platform (1) and the cam ring (7). The drive assembly drives the cam ring (7) to swing regularly around its axis for testing the force on the instrument panel at different angles.

2. The strength testing device for instrument panel production according to claim 1, characterized in that, The drive assembly includes a motor (8), a drive gear (9), and a driven gear (10). The motor (8) is fixedly connected inside the detection platform (1). The drive gear (9) is fixedly connected to the output end of the motor (8). The driven gear (10) meshes with one side of the drive gear (9). The support column (11) is fixedly connected inside the detection platform (1). The bottom end of the support plate (4) is installed by a ball joint with the top end of the support column (11). The driven gear (10) is sleeved on the outside of the support column (11) and rotatably connected to its outer wall.

3. The strength testing device for instrument panel production according to claim 2, characterized in that, Three extrusion rollers (12) are provided above the driven gear (10), and the three extrusion rollers (12) are arranged in an equilateral triangle. The bottom of two extrusion rollers (12) is rotatably connected to a connecting sleeve (13), and the bottom of the other extrusion roller (12) is rotatably connected to a support rod (14). The bottom end of the support rod (14) is fixedly connected to the top of the driven gear (10). The inner wall of the connecting sleeve (13) is fixedly connected to a spring (15), and the bottom end of the spring (15) is fixedly connected to a slide rod (16). The slide rod (16) is slidably connected to the inner wall of the corresponding connecting sleeve (13), and the bottom end of the slide rod (16) is fixedly connected to the top of the driven gear (10). The three extrusion rollers (12) are in contact with the bottom outer wall of the cam ring (7).

4. The strength testing device for instrument panel production according to claim 1, characterized in that, The clamping assembly includes: a gear (17), a first connecting rack (18), a second connecting rack (19), and a spring (20). Two gears (17) are rotatably connected to the inner axis of the placement plate (5). The first connecting rack (18) is meshed on both longitudinal sides of the gear (17) near the top. The ends of the first connecting rack (18) that are far apart from each other are rotatably connected to the corresponding arc-shaped fixing member (6). The second connecting rack (19) is meshed on both transverse sides of the gear (17) near the bottom. The ends of the second connecting rack (19) that are far apart from each other are rotatably connected to the corresponding arc-shaped fixing member (6). The spring (20) is fixedly connected to the outer wall of the first connecting rack (18) and the second connecting rack (19). The other end of the spring (20) is fixedly connected to the inner wall of the placement plate (5), and the installation direction of the spring (20) is consistent with the installation direction of the corresponding connecting rack.

5. The strength testing device for instrument panel production according to claim 4, characterized in that, A knob (21) is rotatably connected to the side of the placement plate (5) near the rotatable connection with the support plate (4). A gear two (22) is fixedly connected to the bottom of the knob (21). A third connecting rack (23) meshes with both sides of the gear two (22). A trapezoidal block (24) is fixedly connected to the ends of the third connecting rack (23) that are far apart from each other.

6. The strength testing device for instrument panel production according to claim 5, characterized in that, The side walls of the first connecting rack (18) and the second connecting rack (19) are provided with slots (25) at equal intervals. The inside of the placement plate (5) is symmetrically connected to the top rod (26). The ends of the top rod (26) are fixedly connected to the first locking block (27) that matches the slot (25). The top rod (26) is fitted with the third spring (28). One end of the third spring (28) is fixedly connected to the outer wall of the top rod (26), and the other end is in contact with the inner wall of the placement plate (5). The end of the top rod (26) away from the first locking block (27) is spherical and in contact with the corresponding trapezoidal block (24).

7. The strength testing device for instrument panel production according to claim 6, characterized in that, The middle part of the third connecting rack (23) is fixedly connected to an L-shaped rod (29), and the other end of the L-shaped rod (29) is fixedly connected to a second locking block (30) that matches the locking slot (25).

8. The strength testing device for instrument panel production according to claim 5, characterized in that, The knob (21) has an installation groove inside, and a spring four (31) is fixedly connected to the inner wall of the installation groove. A spherical locking block (32) is fixedly connected to the other end of the spring four (31). The placement plate (5) has two spherical grooves corresponding to the spherical locking block (32) inside, and the spherical locking block (32) is engaged with at least one of the spherical grooves.

9. The strength testing device for instrument panel production according to claim 1, characterized in that, The support plate (4) has a symmetrical clearance groove on the side away from the rotational connection with the placement plate (5). The side wall of the detection platform (1) is fixedly connected to an electric push rod (33). The output end of the electric push rod (33) is symmetrically fixedly connected to a trapezoidal top plate (34) corresponding to the clearance groove.

10. The strength testing device for instrument panel production according to claim 9, characterized in that, A tension spring (35) is symmetrically fixed to the bottom of the support plate (4), and the other end of the tension spring (35) is fixedly connected to the top of the placement plate (5).

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