Wheel collision strength detection positioning and clamping mechanism

Abstract

The utility model discloses a kind of wheel collision strength detection positioning clamping mechanism, it is related to automobile parts detection equipment technical field, including fixed frame seat, the upper end of the fixed frame seat is equipped with detection rotating component, the front end of the fixed frame seat is equipped with control panel.The utility model, positioning structure uses polyurethane positioning cone head and wheel center hole conical surface cooperation, cooperation the real-time feedback of first pressure sensor, realize center positioning error;Three groups of circumferentially distributed clamping units cooperate with center positioning, form the double positioning of "centering and circumferential constraint", avoid wheel deviation when collision detection, in combination with stepless speed regulation and closed-loop control of variable speed motor, the accurate angle positioning of rotating platform can be realized, satisfy multidirectional collision detection demand, without repeated clamping adjustment, secondly, clamping structure uses the double adjustment mode of "screw rod coarse adjustment and cylinder fine adjustment", and screw rod can realize large-range spacing adjustment.

Description

Technical Field

[0001] This utility model relates to the technical field of automotive parts testing equipment, and in particular to a wheel collision strength testing positioning clamping mechanism. Background Technology

[0002] As a core component of a vehicle's driving system, the impact strength of wheels directly affects vehicle safety. During wheel production and development, impact strength testing is essential to verify structural reliability. The positioning and clamping mechanism is a critical component of wheel collision testing equipment, and its performance directly impacts testing accuracy and safety.

[0003] However, the existing wheel positioning and clamping mechanisms have the following shortcomings: First, the positioning reference is singular, relying mainly on the wheel center hole or the edge of the rim for positioning, which is prone to positioning deviation due to wheel size deviation; Second, the clamping force adjustment accuracy is low, making it difficult to adapt to different wheel specifications, and it is prone to loosening under collision impact. Therefore, a wheel collision strength detection positioning and clamping mechanism is proposed. Utility Model Content

[0004] The purpose of this invention is to solve the problems existing in the prior art by proposing a wheel collision strength detection, positioning and clamping mechanism.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a wheel collision intensity detection, positioning, and clamping mechanism, comprising a fixed frame, a detection rotation component mounted on the upper end of the fixed frame, a control panel mounted on the front end of the fixed frame, a rotating platform rotatably mounted on the upper end of the detection rotation component, three sets of angle sensors mounted on the upper end of the rotating platform, and a positioning structure and a clamping structure provided on the upper end of the rotating platform.

[0006] The positioning structure includes a cylinder, a lifting cylinder is installed at the lower end of the rotating platform, a positioning cone is inserted through the upper end of the rotating platform, and multiple sets of first pressure sensors are installed on the outer wall of the positioning cone.

[0007] The clamping structure includes three sets of movable seats, each set of movable seats is equipped with a clamping cylinder, each set of clamping cylinders has a limit seat installed at its extended end, each set of limit seats has a detachable L-shaped plate installed at its upper end, each set of L-shaped plates has a protective pad installed on its inner wall, and each set of L-shaped plates has a second pressure sensor installed at its inner top.

[0008] Preferably, the lower end of the cylinder is fixed to the upper end of the rotating platform, and a portion of the positioning cone is disposed inside the cylinder.

[0009] Preferably, the extended end of the lifting cylinder is fixed to the lower end of the positioning cone, the lifting cylinder and multiple sets of first pressure sensors are all connected to the control panel signal, and the angle sensor is connected to the control panel signal.

[0010] Preferably, all three sets of clamping cylinders and the three sets of second pressure sensors are connected to the control panel for signal transmission, and the inner walls of the three sets of protective pads are in contact with the outer walls of the three sets of second pressure sensors.

[0011] Preferably, the upper end of the rotating platform is provided with three sets of convex grooves, and three sets of screws are rotatably installed through the outer wall of the rotating platform. Convex seats are slidably installed inside the three sets of convex grooves, and the upper ends of the three sets of convex seats are respectively fixed to the lower ends of the three sets of movable seats.

[0012] Preferably, one end of each of the three sets of screws is rotatably installed inside the three sets of convex grooves, and the three sets of screws are threadedly connected to the three sets of convex seats respectively.

[0013] Preferably, a variable speed motor is installed at the top of the interior of the fixed frame, the output end of the variable speed motor passes through the top of the interior of the fixed frame and is fixed to the input end of the rotation detection component, and the variable speed motor is connected to the control panel for signal transmission.

[0014] Compared with the prior art, the advantages and positive effects of this utility model are as follows:

[0015] 1. In this utility model, the positioning structure uses a polyurethane positioning cone head that fits with the cone surface of the wheel's center hole. With the real-time feedback from the first pressure sensor, the center positioning error is eliminated. Three sets of circumferentially distributed clamping units work together with the center positioning to form a dual positioning of "centering and circumferential constraint," which avoids wheel deviation during collision detection. Combined with the stepless speed regulation and closed-loop control of the variable speed motor, the precise angle positioning of the rotating platform can be achieved, meeting the needs of multi-directional collision detection without the need for repeated clamping and adjustment.

[0016] 2. In this utility model, the clamping structure adopts a dual adjustment method of "coarse adjustment of screw and fine adjustment of cylinder". The screw can achieve a wide range of spacing adjustment. With the replaceable L-shaped plate, it can be adapted to wheels of different specifications and different rim shapes, with strong compatibility. Secondly, the second pressure sensor monitors the clamping force in real time and realizes closed-loop control. The clamping force can be flexibly adjusted according to the wheel material, which can ensure that there is no loosening during collision and avoid damage to the wheel due to excessive clamping force. Attached Figure Description

[0017] Figure 1 A three-dimensional structural diagram of a wheel collision intensity detection positioning clamping mechanism is provided for this utility model;

[0018] Figure 2A front structural diagram of a wheel collision intensity detection positioning clamping mechanism is provided for this utility model.

[0019] Figure 3 This utility model provides a three-dimensional view of a rotating platform, positioning structure, and clamping structure for a wheel collision strength detection positioning clamping mechanism;

[0020] Figure 4 A three-dimensional view of the positioning structure of a wheel collision strength detection positioning clamping mechanism is provided for this utility model;

[0021] Figure 5 The present invention provides a bottom view of a convex seat and clamping structure for a wheel collision strength detection positioning clamping mechanism.

[0022] Legend: 1. Fixed frame; 11. Rotation detection assembly; 12. Control panel; 13. Variable speed motor; 14. Rotating platform; 15. Angle sensor; 16. Screw; 17. Convex groove; 18. Convex seat; 2. Positioning structure; 21. Lifting cylinder; 22. Positioning cone; 23. Cylinder; 24. First pressure sensor; 3. Clamping structure; 31. Movable seat; 32. Clamping cylinder; 33. L-shaped plate; 34. Limit seat; 35. Protective pad; 36. Second pressure sensor. Detailed Implementation

[0023] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described below with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0024] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed in the following specification.

[0025] Example 1: As Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 As shown, this utility model provides a wheel collision intensity detection positioning clamping mechanism, including a fixed frame 1, a detection rotation component 11 installed on the upper end of the fixed frame 1, a control panel 12 installed on the front end of the fixed frame 1, a rotating platform 14 rotatably installed on the upper end of the detection rotation component 11, three sets of angle sensors 15 installed on the upper end of the rotating platform 14, and a positioning structure 2 and a clamping structure 3 provided on the upper end of the rotating platform 14.

[0026] The positioning structure 2 includes a cylinder 23, a lifting cylinder 21 installed at the lower end of a rotating platform 14, a positioning cone 22 inserted through the upper end of the rotating platform 14, multiple sets of first pressure sensors 24 installed on the outer wall of the positioning cone 22, the lower end of the cylinder 23 being fixed to the upper end of the rotating platform 14, a part of the positioning cone 22 being disposed inside the cylinder 23, the extended end of the lifting cylinder 21 being fixed to the lower end of the positioning cone 22, the lifting cylinder 21 and the multiple sets of first pressure sensors 24 being signal-connected to the control panel 12, and the angle sensor 15 being signal-connected to the control panel 12.

[0027] The clamping structure 3 includes three sets of movable seats 31. Each set of movable seats 31 is equipped with a clamping cylinder 32. Each set of clamping cylinders 32 is equipped with a limit seat 34 at its extended end. Each set of limit seats 34 is equipped with a detachable L-shaped plate 33 at its upper end. Each set of L-shaped plates 33 is equipped with a protective pad 35 on its inner wall. Each set of L-shaped plates 33 is equipped with a second pressure sensor 36 at its inner top. The three sets of clamping cylinders 32 and the three sets of second pressure sensors 36 are connected to the control panel 12 via signal. The inner walls of the three sets of protective pads 35 are in contact with the outer walls of the three sets of second pressure sensors 36.

[0028] A variable speed motor 13 is installed at the top of the interior of the fixed frame 1. The output end of the variable speed motor 13 passes through the top of the interior of the fixed frame 1 and is fixed to the input end of the detection rotation component 11. The variable speed motor 13 is connected to the control panel 12 for signal transmission.

[0029] The specific settings and functions of this embodiment are described in detail below. The top of the interior has a reserved mounting hole for fixing the variable speed motor 13; the upper end face is rigidly connected to the detection rotation assembly 11 by bolts to ensure structural stability during the driving process.

[0030] The rotating assembly 11 consists of a planetary gear reducer, a deep groove ball bearing, and an output flange. The input end of the reducer is connected to the output shaft of the variable speed motor 13 via a key, and the output end is fixed to the bottom center of the rotating platform 14 via the flange. The deep groove ball bearing is embedded in the mounting hole at the upper end of the fixed frame 1, which provides radial support and axial positioning for the rotating platform 14, ensuring the radial runout during rotation.

[0031] The variable speed motor 13 receives instructions from the control panel 12 via pulse signals. Its output shaft is connected to the reducer input end of the detection rotation assembly 11 via a flexible coupling, which effectively buffers the torque impact during rotation and protects the transmission components.

[0032] The rotating platform 14 is made of aluminum alloy. Three sets of angle sensors 15 are evenly distributed along the circumference on the upper surface of the platform. The center of the lower end face is fastened to the output flange of the detection rotation component 11 by bolts to ensure efficient power transmission.

[0033] Angle sensor 15 is fixed to the upper surface of rotating platform 14 by bracket, and its detection end is in contact with the scale on the edge of the platform. The sensor collects the rotation angle signal of rotating platform 14 in real time and transmits it to control panel 12 to realize closed-loop control of rotation angle.

[0034] The control panel 12 is installed on the front face of the fixed frame 1 and integrates a 10.1-inch touch screen, emergency stop button, status indicator light and signal interface. It is equipped with a PLC controller (Siemens S7-200SMART) and communicates with the electrical components of the variable speed motor 13, angle sensor 15, positioning structure 2 and clamping structure 3 through RS485 communication protocol. It can complete parameter setting, status monitoring and automatic control logic execution.

[0035] Positioning structure 2 is a "cylinder-driven - cone-head positioning" design, which is used for the precise positioning of the wheel center hole;

[0036] The lifting cylinder 21 is a mini cylinder, which is fixed to the center of the lower end face of the rotating platform 14 by an L-shaped bracket. The end of its piston rod is fixed to the connecting flange at the lower end of the positioning cone 22 by a thread, which can drive the positioning cone 22 to achieve axial lifting and lowering, and adapt to the positioning needs of wheels of different thicknesses.

[0037] The positioning cone 22 is integrally molded from polyurethane material and has an overall conical structure. The bottom top is provided with a guide rounded corner to facilitate smooth insertion into the center hole of the wheel. The lower part of the cone is provided with a metal connecting flange for connecting to the piston rod of the lifting cylinder 21. Three sets of first pressure sensors 24 are evenly distributed along the axial direction on the outer wall.

[0038] The cylinder 23 is made of stainless steel. Its lower end is fixed to the center of the upper end face of the rotating platform 14 by welding. The upper end face is flush with the large end of the positioning cone 22, forming a protective and guide sleeve for the positioning cone 22 to prevent radial displacement of the cone during the lifting process.

[0039] The first pressure sensor 24 is a miniature pressure sensor, which is fixed to the outer wall of the positioning cone 22 by embedding. Its detection surface is flush with the surface of the cone. The sensor detects the contact pressure between the cone and the inner wall of the wheel center hole in real time, so as to send a "positioning in place" signal to the control panel 12.

[0040] The clamping structure 3 is a "screw 16 adjustment - cylinder drive" type circumferential clamping mechanism, which consists of three sets of symmetrically distributed clamping units;

[0041] A convex groove 17 is formed on the upper end face of the rotating platform 14. The cross-section is "T". Lithium-based grease is applied inside the groove to reduce sliding friction. The convex seat 18 is made of nylon and its cross-section is adapted to the convex groove 17. The bottom is provided with a wear-resistant coating and can slide smoothly along the convex groove 17. Its upper end face is fixed to the movable seat 31 by 4 M8 bolts.

[0042] The movable seat 31 is made of aluminum alloy and has a pre-drilled cylinder mounting hole inside for fixing the clamping cylinder 32; its lower end face is rigidly connected to the convex seat 18 and moves synchronously with the convex seat 18.

[0043] The clamping cylinder 32 is a thin cylinder, which is fixed inside the movable seat 31 by bolts. The end of its piston rod is connected to the limit seat 34 through a floating joint, which can compensate for installation errors and ensure uniform transmission of clamping force.

[0044] The limiting seat 34 is a steel plate stamping part used to connect the piston rod of the clamping cylinder 32 and the L-shaped plate 33; the detachable L-shaped plate 33 is made of high-strength plastic, and its clamping surface is designed to be arc-shaped according to the shape of the wheel rim. It is detachably connected to the limiting seat 34 by two M6 bolts, which makes it easy to replace and adapt to different specifications of wheels.

[0045] The protective pad 35 is made of nitrile rubber and is glued to the inner wall of the L-shaped plate 33 to prevent scratching the wheel rim during clamping. The second pressure sensor 36 is embedded in the top of the L-shaped plate 33, and its detection surface is in contact with the inner wall of the protective pad 35. It can detect the clamping force in real time and feed the signal back to the control panel 12.

[0046] Example 2: Figure 1 , Figure 2 , Figure 3 and Figure 5 As shown, the upper end of the rotating platform 14 is provided with three sets of convex grooves 17, and three sets of screws 16 are rotatably installed through the outer wall of the rotating platform 14. Convex seats 18 are slidably installed inside the three sets of convex grooves 17. The upper ends of the three sets of convex seats 18 are respectively fixed to the lower ends of the three sets of movable seats 31. One end of the three sets of screws 16 is rotatably installed inside the three sets of convex grooves 17, and the three sets of screws 16 are respectively threadedly connected to the three sets of convex seats 18.

[0047] The overall effect of this embodiment is that the upper end of the rotating platform 14 has three sets of radially distributed convex grooves 17. One end is supported by a deep groove ball bearing on the inner end of the convex groove 17, and the other end passes through the outer wall of the rotating platform 14 and is equipped with a handwheel. The screw 16 is connected to the convex seat 18 by a thread. Rotating the handwheel can drive the convex seat 18 to move radially along the convex groove 17, which facilitates the adjustment of the position of the movable seat 31.

[0048] The usage method and working principle of this device: Equipment debugging: Adjust the overall level by adjusting the leveling feet at the bottom of the fixed frame 1, turn the screw 16 handwheel to drive the convex seat 18 to move the movable seat 31 along the convex groove 17, adjust the initial spacing of the three clamping units according to the wheel diameter, and replace the suitable L-shaped plate 33.

[0049] Loading and center positioning: Place the wheel on the rotating platform 14 and align the center hole of the wheel with the positioning cone 22; start the lifting cylinder 21 through the control panel 12, the piston rod extends and pushes the positioning cone 22 to rise and insert into the center hole. When the first pressure sensor 24 detects that the pressure reaches the set threshold, it sends a feedback signal to the control panel 12, the lifting cylinder 21 stops moving, and the center positioning is completed.

[0050] Circumferential clamping: The control panel 12 sends a command to start the clamping cylinder 32. The piston rod extends and pushes the L-shaped plate 33 toward the wheel rim. After the protective pad 35 contacts the wheel rim, the second pressure sensor 36 detects the clamping force in real time. After the set value is reached, the clamping cylinder 32 stops operating, thus achieving stable clamping.

[0051] Multi-angle detection: According to the detection requirements, the rotation angle is set through the control panel 12, the variable speed motor 13 drives the detection rotation component 11 to drive the rotation platform 14 to rotate, the angle sensor 15 provides real-time feedback of the rotation angle, the motor stops after the set position is reached, and the collision mechanism performs collision detection.

[0052] Material unloading and resetting: After the inspection is completed, the control panel 12 controls the clamping cylinder 32 and the lifting cylinder 21 to reset in sequence, the positioning cone 22 disengages from the center hole of the wheel, the L-shaped plate 33 loosens the rim, the wheel is removed, and all components return to their initial state.

[0053] The above are merely preferred embodiments of this utility model and are not intended to limit the utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of this utility model without departing from the technical solution of this utility model shall still fall within the protection scope of this utility model.

Claims

1. A wheel collision strength detection positioning and clamping mechanism comprising a fixed frame seat (1), characterized in that: The upper end of the fixed frame seat (1) is provided with a detection rotating assembly (11), and the front end of the fixed frame seat (1) is provided with a control panel (12); the upper end of the detection rotating assembly (11) is rotatably provided with a rotating platform (14); the upper end of the rotating platform (14) is provided with three angle sensors (15); and the upper end of the rotating platform (14) is provided with a positioning structure (2) and a clamping structure (3). The positioning structure (2) comprises a cylinder (23); the lower end of the rotating platform (14) is provided with a lifting cylinder (21); and the upper end of the rotating platform (14) is provided with a positioning cone head (22) penetratingly inserted into the cylinder (23); and the outer wall of the positioning cone head (22) is provided with a plurality of first pressure sensors (24). The clamping structure (3) comprises three movable seats (31); the interiors of the three movable seats (31) are provided with clamping cylinders (32); the extending ends of the three clamping cylinders (32) are provided with limiting seats (34); the upper ends of the three limiting seats (34) are provided with detachable L-shaped plates (33); the inner walls of the three L-shaped plates (33) are provided with protective pads (35); and the interiors of the top ends of the three L-shaped plates (33) are provided with second pressure sensors (36).

2. The wheel collision strength detection positioning and clamping mechanism according to claim 1, characterized in that: The lower end of the cylinder (23) is fixed to the upper end of the rotating platform (14), and a part of the positioning cone head (22) is arranged in the cylinder (23).

3. The wheel crash strength test positioning and clamping mechanism of claim 2, wherein: The extending end of the lifting cylinder (21) is fixed to the lower end of the positioning cone head (22), the lifting cylinder (21) and the plurality of first pressure sensors (24) are signal-connected to the control panel (12), and the angle sensor (15) is signal-connected to the control panel (12).

4. The wheel collision strength detection positioning and clamping mechanism according to claim 1, characterized in that: The three clamping cylinders (32) and the three second pressure sensors (36) are signal-connected to the control panel (12), and the inner walls of the three protective pads (35) are respectively in contact with the outer walls of the three second pressure sensors (36).

5. The wheel crash strength test positioning and clamping mechanism of claim 4, wherein: The upper end of the rotating platform (14) is provided with three convex grooves (17), the outer wall of the rotating platform (14) is rotatably provided with three screw rods (16), the interiors of the three convex grooves (17) are slidably provided with three convex seats (18), and the upper ends of the three convex seats (18) are respectively fixed to the lower ends of the three movable seats (31).

6. A wheel crash strength testing positioning and clamping mechanism according to claim 5, wherein: One end of each of the three screw rods (16) is rotatably arranged in the interior of each of the three convex grooves (17), and the three screw rods (16) are respectively screw-connected to the three convex seats (18).

7. The wheel impact strength detection positioning and clamping mechanism according to claim 1, characterized in that: The interior top end of the fixed frame seat (1) is provided with a variable-speed motor (13), the output end of the variable-speed motor (13) penetrates through the interior top end of the fixed frame seat (1) and is fixed to the input end of the detection rotating assembly (11), and the variable-speed motor (13) is signal-connected to the control panel (12).

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