Steering wheel comprehensive test board suitable for various types of steering wheels

Abstract

The utility model discloses a steering wheel comprehensive test bench suitable for various types of steering wheels, comprising a frame system used for installing a guiding loading mechanism and a driving brake mechanism; the guiding loading mechanism comprises a loading mechanism which is used for connecting a steering wheel through an inner mounting plate, driving the steering wheel to move up and down, completing contact with or separation from a driving brake mechanism, and carrying out driving and steering performance testing of the steering wheel under a load condition or a no-load condition; the guide mechanism is used for aligning; vertical movement of the two outer mounting plates is guided; the locking mechanism is used for locking the outer mounting plate and the inner mounting plate; the inner mounting plate and the outer mounting plate can rotate relatively so as to adjust the rotation axis of a steering wheel tire and fix the steering wheel tire; and the driving and braking mechanism is in contact with a steering wheel tire so as to test the driving and steering performance of the steering wheel under a load condition. According to the utility model, the application range of the steering wheel comprehensive testboard with the same volume can be improved, and the space utilization rate of equipment is improved.

Description

Technical Field

[0001] The utility model belongs to the field of AGV transfer vehicle steering wheel testing, in particular to a comprehensive steering wheel testing bench suitable for multiple models of steering wheels. Background Technique

[0002] After the steering wheel used in the AGV vehicle is assembled, it is necessary to conduct comprehensive performance tests on the entire steering wheel system, which usually includes driving and steering performance tests under no-load and load conditions. Due to the huge differences in application scenarios, a variety of models of steering wheels will be designed and developed accordingly. For the steering wheel with two active orthogonal rotation axes alone, the differences between different models usually include: wheel height, wheel diameter, wheel width, driving torque, steering torque, wheel pressure, and wheel speed, etc.

[0003] The existing small-volume comprehensive steering wheel testing bench can stably conduct comprehensive performance tests on steering wheels of small wheel diameter (150mm - 280mm) models. However, for steering wheels with a wheel diameter greater than 280mm, it is no longer possible to stably conduct comprehensive performance tests. Therefore, it is necessary to optimize and design a small-volume comprehensive steering wheel testing bench that can stably adapt to multiple models of steering wheels. Content of the Utility Model

[0004] The purpose of the utility model is to provide a comprehensive steering wheel testing bench suitable for multiple models of steering wheels, so as to improve the adaptation range of the comprehensive steering wheel testing bench under the same volume and improve the space utilization rate of the equipment.

[0005] The technical solution to achieve the purpose of the utility model is as follows:

[0006] A comprehensive steering wheel testing bench suitable for multiple models of steering wheels, including:

[0007] A frame system for installing a guiding and loading mechanism and a driving and braking mechanism;

[0008] The guiding and loading mechanism includes:

[0009] A loading mechanism for connecting the steering wheel through an inner mounting plate, driving the steering wheel to move up and down, completing the contact or separation with the driving and braking mechanism, and conducting driving and steering performance tests on the steering wheel under load conditions or no-load conditions;

[0010] A guiding mechanism for guiding the up and down movement of two outer mounting plates;

[0011] A locking mechanism for locking between the outer mounting plate and the inner mounting plate;

[0012] The inner mounting plate and the outer mounting plate can rotate relative to each other to adjust the rotation axis of the steering wheel tire and fix it;

[0013] The driving and braking mechanism is in contact with the steering wheel tire to conduct the driving and steering performance tests of the steering wheel under load conditions.

[0014] Compared with the prior art, the remarkable advantages of the present utility model are as follows:

[0015] (1) The guiding and loading mechanism has an optimized structure that can be locked with the frame, enhancing stability. It improves the product test range adaptable to the steering wheel comprehensive test bench of the same volume, increases the equipment space utilization rate, and better controls the cost of the frame part.

[0016] (2) Through the control of the electric control cabinet, the guiding and loading mechanism applies wheel pressure to the steering wheel according to the product parameters, and the driving and braking mechanism applies braking torque to the steering wheel according to the product parameters. Description of the Drawings

[0017] Figure 1 It is a schematic diagram of the overall structure of the present utility model.

[0018] Figure 2 It is a schematic diagram of the frame system of the present utility model.

[0019] Figure 3 It is a schematic diagram of the guiding and loading mechanism of the present utility model from the first perspective.

[0020] Figure 4 It is a schematic diagram of the guiding and loading mechanism of the present utility model from the second perspective.

[0021] Figure 5 It is a schematic diagram of the driving and braking mechanism of the present utility model.

[0022] Reference Numerals in the Drawings: 1 - Frame System; 2 - Guiding and Loading Mechanism; 3 - Driving and Braking Mechanism; 4 - Electric Control Cabinet; 5 - Cable Hook; 101 - Frame; 102 - Universal Wheel; 103 - Universal Adjusting Foot; 104 - Support Screw; 201 - Optical Axis Support; 202 - Optical Axis; 203 - Linear Bearing; 204 - Outer Mounting Plate; 205 - Rectangular Spring; 206 - Locking Rod; 207 - Pad; 208 - Locking Plate; 209 - Electric Drive Anti-Spin Lift; 210 - Lift Mounting Plate; 211 - Copper Sleeve Limiting Plate; 212 - Copper Sleeve Mounting Plate; 213 - Guide Rod; 214 - Screw Adapter; 215 - Tensile and Compressive Force Sensor; 216 - Fine Tuning Handle; 217 - Inner Mounting Plate; 218 - Copper Sleeve; 301 - Mounting Base Plate; 302 - Outer Roller Support; 303 - Roller; 304 - Inner Roller Support; 305 - Coupling 1; 306 - Torque and Speed Sensor; 307 - Torque and Speed Sensor Support; 308 - Coupling 2; 309 - Magnetic Particle Brake Support; 310 - Magnetic Particle Brake Detailed Embodiments

[0023] The present utility model will be further described below in conjunction with specific embodiments. The illustrative embodiments and explanations of this utility model are used to explain the present utility model, but do not limit the present utility model.

[0024] For example, Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 A comprehensive test bench for steering wheels adaptable to multiple models, as shown, includes a frame system 1, a guiding and loading mechanism 2, a driving and braking mechanism 3, an electric control cabinet 4, and a cable hook 5.

[0025] The frame system 1 includes a frame 101, four universal wheels 102, four universal adjusting feet 103, and five support screws 104. The frame 101 is welded by square tubes and has four support legs. The bottom surface of the support legs is used to install the four universal adjusting feet 103. The lower surface of the lower side square tube is provided with a mounting plate for installing the four universal wheels 102. The upper surface of the lower side square tube is provided with mounting holes for installing the five support screws 104 and the driving and braking mechanism 3. The middle and upper side square tubes are provided with mounting holes for installing the guiding and loading mechanism 2. The four corners of the top of the frame 101 are provided with eye bolt holes. The four universal adjusting feet 103 are connected to the frame 101 and fixed to the bottom surfaces of the four support legs of the frame 101 for adjusting the overall level of the frame 101. The four universal wheels 102 are connected to the frame 101 and fixed to the mounting plate on the lower surface of the lower side square tube of the frame 101. The five support screws 104 are connected to the frame 101 and fixed in the mounting holes on the upper surface of the lower side square tube of the frame 101.

[0026] The guiding and loading mechanism 2 includes eight optical axis supports 201, four optical axes 202, eight linear bearings 203, two outer mounting plates 204, four rectangular springs 205, four locking rods 206, four cushion blocks 207, four locking plates 208, an electric drive anti-spin elevator 209, an elevator mounting plate 210, a copper sleeve limiting plate 211, a copper sleeve mounting plate 212, four guiding rods 213, a screw adapter 214, a tension and compression sensor 215, a fine-tuning handle 216, an inner mounting plate 217, and four copper sleeves 218. The optical axis supports 201 are fixed inside the square tubes in the middle and upper side of the frame 101. The two ends of the optical axes 202 are respectively fixed in two optical axis supports 201 along the vertical direction. The linear bearings 203 pass through the optical axes 202 and can slide up and down along the optical axes 202. They are fixed back to back in pairs on the outer mounting plates 204, and four linear bearings 203 are respectively fixed on two oppositely arranged outer mounting plates 204. The outer mounting plates 204 are rectangular plates. At the two corners on the outer side, there are cube connecting blocks on the upper and lower surfaces for installing the linear bearings 203. On the upper surface of the middle part of the plate, there are reinforcing ribs. The inner side of the plate has a concave arc-shaped notch for positioning with the inner mounting plate 217. The rectangular springs 205 are sleeved on the locking rods 206. One end contacts the outer mounting plate 204, and the other end contacts the ring on the locking rod 206. The outer mounting plate 204 and the inner mounting plate 217 are pressed tightly through the rectangular springs 205. One outer mounting plate 204 is configured with every two rectangular springs. The locking rods 206 are tubular parts with a fixed ring at the lower part for axially limiting the rectangular springs 205. The bottom is connected to the outer mounting plate 204 from below the outer mounting plate 204 and can slide relative to the outer mounting plate 204. The cushion blocks 207 are square plates pressed between the frame 101 and the locking plates 208 for adjusting the height. The locking plates 208 are rectangular plates fixed to the frame 10. There is a vertical hollow circular tube in the middle position near one end for locking the vertical movement of the locking rods 206, and the locking rods 206 pass through the tube. The electric drive anti-spin elevator 209 is fixedly connected to the elevator mounting plate 210. The elevator mounting plate 210 is a square plate fixedly installed on the upper surface of the pipe at the top of the frame 101. The copper sleeve limiting plate 211 is a "cross"-shaped thin plate with a through hole in the center, fixed on the copper sleeve mounting plate 212. The copper sleeve mounting plate 212 is a "cross"-shaped thick plate with a threaded through hole in the center, installed on the output screw of the electric drive anti-spin elevator 209. There are through holes at the four corners for installing the copper sleeves 218. The guiding rods 213 are optical axis parts. One end is fixedly connected to the inner mounting plate 217, and the other end passes through the copper sleeves 218 and can slide up and down along the copper sleeves 218. The screw adapter 214 is a cylindrical sleeve-shaped part. One end is an external threaded rod connected to the tension and compression sensor 215, and the other end is an internal threaded hole connected to the end of the output screw of the electric drive anti-spin elevator 209.The tensile and compressive force sensor 215 is fixedly installed on the inner mounting plate 217 and is connected to the screw adapter 214 through the central threaded hole; the fine-tuning handle 216 is a triangular plate member, with one side fixed at the edge of the inner mounting plate 217. The inner mounting plate 217 is a rectangular plate member, and the two outer sides of the plate are convex arc-shaped notches for positioning with the outer mounting plate 204 to achieve fixed-axis micro-rotation. The inner mounting plate 217 and the outer mounting plate 204 are connected to each other through the connection holes on their horizontal contact surfaces. A connection hole is provided at the center of the inner mounting plate 217, which is used to fix the tensile and compressive force sensor 215, the fixed guide rod 213, the fixed steering wheel, and the fine-tuning handle 216 from the center outwards. The copper sleeve 218 is installed in the through holes at the four corners of the copper sleeve mounting plate 212 and is pressed and stopped by the copper sleeve limiting plate 211. By removing the connection bolts between the inner mounting plate 217 and the outer mounting plate 204, the relative rotation between the inner mounting plate 217 and the outer mounting plate 204 can be driven by rotating the fine-tuning handle 216.;

[0027] The driving and braking mechanism 3 includes a mounting base plate 301, an outer roller support 302, a roller 303, an inner roller support 304, a coupling 305, a torque and speed sensor 306, a torque and speed sensor support 307, a coupling 308, a magnetic powder brake support 309, and a magnetic powder brake 310. The mounting base plate 301 is a rectangular plate with connection holes at its edges for fixed connection to the frame 101, and connection holes are distributed on the central axis for the installation of the outer roller support 302, inner roller support 304, torque and speed sensor support 307, and magnetic powder brake support 309. The outer roller support 302 is a vertical welded bracket fixed at the bottom on the mounting base plate 301 and rotatably engaged with the rotating shaft of the roller 303 at the top. The roller 303 is cylindrical with a hollow cylindrical section in the middle for contact with the steering wheel tire, and there are extended shaft heads at both ends of the central rotating shaft. The outer shaft head is rotatably engaged with the outer roller support 302, and the inner shaft head is rotatably engaged with the inner roller support 304. The inner roller support 304 is a vertical welded bracket fixed at the bottom on the mounting base plate 301 and rotatably engaged with the rotating shaft of the roller 303 at the top. One end of the coupling 305 is fixedly connected to the inner shaft head of the roller 303, and the other end is fixedly connected to the outer input interface of the torque and speed sensor 306. The torque and speed sensor 306 is fixedly installed on the torque and speed sensor support 307, with the outer input interface fixedly connected to the coupling 305 and the inner input interface fixedly connected to the coupling 308. The torque and speed sensor support 307 is a welded bracket fixed at the bottom on the mounting base plate 301 and fixedly connected to the torque and speed sensor 306 on its upper surface. One end of the coupling 308 is fixedly connected to the inner input interface of the torque and speed sensor 306, and the other end is fixedly connected to the output shaft head of the magnetic powder brake 310. The magnetic powder brake support 309 is a welded bracket fixed at the bottom on the mounting base plate 301, with the vertical plate fixedly connected to the side plate through a reinforcing rib, and there are connection holes on the side plate for connection to the magnetic powder brake 310. The magnetic powder brake 310 is fixedly installed on the side plate of the magnetic powder brake support 309.

[0028] The cable hook 5 is an "S"-shaped bracket, with a total of two, hanging on the square tube on the upper side of the frame 101 for positioning the steering wheel cable.

[0029] The electric control cabinet 4 is a cuboid, with a total of one, placed on the square tube on the side of the frame 101 for controlling the operation of the steering wheel comprehensive test bench.

[0030] When the utility model is in use, the four corners of the frame 101 can be hoisted by lifting eye bolts for the transfer of the steering wheel comprehensive test bench. The steering wheel comprehensive test bench can also be pushed to the designated position through the universal wheels 102. Adjust the universal adjusting feet 103 until the frame 101 is lifted, and all the universal wheels 102 are at a certain distance from the ground. Level the frame 101. Then adjust the support screw 104 until it contacts the ground, so as to enhance the rigidity of the bottom of the frame 101. At this point, the conditions for steering wheel testing are met.

[0031] Install the steering wheel on the lower surface of the inner mounting plate 217, and coil the steering wheel cable on the cable hook 5. After the electrical control cabinet 4 is powered on, the driving and steering performance tests of the steering wheel under no-load conditions can be carried out when the steering wheel tire is not in contact with the roller 303. When it is necessary to carry out the driving and steering performance tests of the steering wheel under load conditions, controlled by the electrical control cabinet 4, the output screw of the electric drive anti-spin lift 209 moves downward, driving the inner mounting plate 217 and the outer mounting plate 204 to move downward along the optical axis 202 until the steering wheel tire contacts the roller 303. The wheel pressure data is read through the tension and compression sensor 215. When the wheel pressure reaches the rated value, the output screw of the electric drive anti-spin lift 209 stops moving. Thereafter, the locking rod 206 is locked through the vertical hollow circular tube on the locking plate 208 to complete the axial positioning of the locking rod 206, thereby ensuring the stability and firmness of the outer mounting plate 204 and the inner mounting plate 217. When the rotation axis of the steering wheel tire is not parallel to the rotation axis of the roller 303, the relative rotation between the inner mounting plate 217 and the outer mounting plate 204 can be achieved through the fine-tuning handle 216, thereby playing a role in adjusting the relative position relationship between the rotation axis of the steering wheel tire and the rotation axis of the roller 303. After the adjustment is completed, the inner mounting plate 217 and the outer mounting plate 204 are fixed. Thereafter, during the driving performance test, when the inner mounting plate 217 is subjected to the overturning moment generated by the steering wheel tire, the moment can be transmitted from the guide rod 213, the copper bushing 218, and the copper bushing mounting plate 212 to the output screw of the electric drive anti-spin lift 209 with a larger diameter to reduce the force at the connection between the screw adapter 214 and the tension and compression sensor 215. The moment can also be transmitted from the rectangular spring 205, the locking rod 206, and the locking plate 208 to the frame 101 to limit the overturning trend of the inner mounting plate 217 and the outer mounting plate 204 and ensure the stable progress of the driving performance test. Through the electrical control cabinet 4, during the above driving performance test, the braking torque of the magnetic particle brake 310 is adjusted, and the moment value at this time can be read through the torque and speed sensor 306, and the braking torque is adjusted as required, thereby completing the test of the driving and steering performance of the steering wheel under load conditions. Controlled by the electrical control cabinet 4, the output screw of the electric drive anti-spin lift 209 moves upward, driving the inner mounting plate 217 and the outer mounting plate 204 to move upward along the optical axis 202 until the inner mounting plate 217 and the outer mounting plate 204 move to the specified height, then the steering wheel can be removed from the steering wheel comprehensive test bench and the cable can be removed to complete the comprehensive performance test of the steering wheel.

[0032] The utility model realizes the flexible transfer of the entire steering wheel comprehensive test bench through the frame system; applies wheel pressure to the steering wheel and clamps and positions it through the guiding and loading mechanism; applies braking torque to the steering wheel through the driving and braking mechanism. Thereby completing the driving and steering performance tests of the steering wheel, improving the adaptation range of the steering wheel comprehensive test bench under the same volume, improving the space utilization rate of the equipment, effectively reducing the equipment cost, and meeting the market needs.

Claims

1. An integrated testing bench for steering wheels adaptable to multiple models, characterized in that, include: Frame system, used to install guide loading mechanism, drive brake mechanism; The guide loading mechanism comprises: The loading mechanism is used to connect the steering wheel through the inner mounting plate and drive the steering wheel to move up and down, complete the contact or separation with the driving brake mechanism, and conduct the driving and steering performance test of the steering wheel under load or no-load conditions; A guide mechanism, used for guiding the up and down movement of the two outer mounting plates; A locking mechanism, used to lock the outer mounting plate and the inner mounting plate; The inner mounting plate and the outer mounting plate can rotate relative to each other to adjust the rotation axis of the steering wheel tire and fix it; The driving and braking mechanism is in contact with the steering wheel tire to test the driving and steering performance of the steering wheel under load conditions.

2. The integrated test bench for steering wheels adaptable to multiple models according to claim 1, characterized in that The loading mechanism includes an elevator, an elevator mounting plate, a copper sleeve limit plate, a copper sleeve mounting plate, a guide rod, a screw adapter, a tension pressure sensor, and a copper sleeve; The elevator is fixed to the frame system through the elevator mounting plate; the copper sleeve limit plate is fixed on the copper sleeve mounting plate and is threadedly connected to the elevator output screw; a plurality of copper sleeves are provided on the copper sleeve mounting plate; one end of the guide rod is fixedly connected to the inner mounting plate, and the other end passes through the copper sleeve and can slide up and down along the copper sleeve; one end of the screw adapter is connected to the end of the elevator output screw, and the other end is connected to the pull pressure sensor; the pull pressure sensor is fixedly mounted on the inner mounting plate.

3. The integrated test bench for steering wheels adaptable to multiple models according to claim 1, characterized in that, The guide mechanism includes an optical axis support, four optical axes, and four linear bearings; The two ends of the optical axis are fixed on the frame system through the optical axis supports; the linear bearings pass through the optical axis, can slide up and down along the optical axis, and are fixed on the outer mounting plate in pairs.

4. The integrated test bench for steering wheels adaptable to multiple models according to claim 1, characterized in that, The locking mechanism includes four rectangular springs, four locking rods, and four locking plates; The rectangular spring is sleeved on the locking rod, one end of which contacts the outer mounting plate, and the other end contacts the circular ring on the locking rod; the bottom of the locking rod is connected to the outer mounting plate and can slide relative to the outer mounting plate, and the upper end passes through the locking plate; the locking plate is connected to the frame system and is used to lock the vertical movement of the locking rod.

5. The integrated test bench for steering wheels adaptable to multiple models according to claim 4, characterized in that, A cushion block is provided between the locking plate and the frame system.

6. The integrated test bench for casters adaptable to multiple caster models according to claim 1, characterized in that, The inner side of the outer mounting plate is provided with a concave arc-shaped notch, and the outer side of the inner mounting plate is provided with a convex arc-shaped notch; the convex arc-shaped notch of the inner mounting plate matches the concave arc-shaped notch of the outer mounting plate.

7. The integrated testing bench for steering wheels adaptable to multiple models according to claim 1, characterized in that, The inner mounting plate is provided with a fine-tuning handle for driving the relative rotation between the inner mounting plate and the outer mounting plate.

8. The integrated test bench for steering wheels adaptable to multiple models according to claim 1, characterized in that The driving brake mechanism comprises a roller, a coupling 1, a torque speed sensor, a coupling 2, and a brake which are connected in sequence; the roller is used to contact the steering wheel tire; and the torque speed sensor is used to detect the braking torque of the brake.

9. The integrated testing bench for steering wheels adaptable to multiple models according to claim 1, characterized in that, The frame system comprises a frame, four universal wheels connected to the frame, four universal adjustment feet and a plurality of support screws.

10. The integrated test bench for steering wheels adaptable to multiple models according to claim 1, characterized in that, The frame system is also provided with a cable hook.

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