Wheel nut torsion and press-out force detection device

Abstract

The utility model provides a wheel nut torsion and press-out force detection device, relates to the technical field of wheel nut torsion and press-out force detection auxiliary devices, and aims to solve the problems that the torsion and press-out force detection of a conventional wheel nut is manually detected by a worker; the wheel nut torsion detection device solves the problems that a special detection device is not designed to detect torsion of a wheel nut and related data of pressing-out force, an existing detection device is low in detection efficiency and low in detection precision, and comprises a working frame, an air cylinder is installed at the top of the working frame, the air cylinder is in sliding connection with a sliding rod, and a guide rail is fixedly connected to the working frame. The guide rail is slidably connected with a frame, the frame is fixedly connected with the sliding rod through a connecting base, sliding rails are symmetrically distributed on the frame, and limiting bases are slidably arranged in the sliding rails.

Description

Technical Field

[0001] The utility model relates to the technical field of auxiliary devices for detecting the torque and stripping force of wheel nuts, and particularly relates to a device for detecting the torque and stripping force of wheel nuts. Background Art

[0002] The detection of the torque and stripping force of wheel nuts is an important link to ensure the safe installation of wheels and the safe driving of vehicles. The detection of wheel nut torque is mainly used to confirm whether the nut reaches the specified tightening torque to ensure a firm and reliable connection between the wheel and the hub. The detection of wheel nut stripping force is mainly used to evaluate the connection strength between the nut and the bolt or the hub to ensure that the nut will not loosen or fall off under extreme working conditions (such as high-speed driving, emergency braking, etc.).

[0003] The existing detection of the torque and stripping force of wheel nuts is manually detected by staff, and no special detection device is designed to detect the relevant data of the torque and stripping force of wheel nuts. There are problems of low detection efficiency and low detection accuracy. Therefore, it is particularly important to design a device for detecting the torque and stripping force of wheel nuts to solve the above technical problems. Summary of the Utility Model

[0004] The purpose of the utility model is to solve the problems that the existing detection of the torque and stripping force of wheel nuts is manually detected by staff, and no special detection device is designed to detect the relevant data of the torque and stripping force of wheel nuts, resulting in low detection efficiency and low detection accuracy. A device for detecting the torque and stripping force of wheel nuts is proposed.

[0005] To achieve the above purpose, the utility model adopts the following technical scheme: A device for detecting the torque and stripping force of wheel nuts, including a working frame. At the top position of the working frame, a cylinder is installed. The cylinder is slidably connected with a sliding rod. A guide rail is fixedly connected to the working frame. A frame is slidably connected to the guide rail. The frame is fixedly connected to the sliding rod through a connecting seat. Slide rails are symmetrically distributed on the frame. A limit seat is slidably arranged in the slide rail. A floating head is rotatably connected in the limit seat. A thread gauge is installed at the bottom of the floating head. A nut to be tested is installed below the thread gauge. A platform is installed on the right side of the working frame. The nut to be tested is installed in the platform. A pressure sensor is also installed on the connecting seat. A displacement sensor is also installed on the frame.

[0006] Preferably, a bearing block is slidably installed above the limit seat on the slide rail. A motor is installed on the top of the frame. A rotor is rotatably connected in the motor. A support rod is installed between the limit seat and the bearing block. A rotating rod is rotatably connected in the bearing block. The rotating rod communicates with the rotor. A bushing is slidably connected below the rotating rod. The rotating rod and the bushing are connected and limited by a pin shaft. The floating head and the bushing are fixedly connected to each other.

[0007] Preferably, a coupling is installed between the rotor and the bearing block, and a torque limiter is also installed between the coupling and the rotor.

[0008] Preferably, with the assistance of the pin shaft, the bushing and the rotating rod can be connected into a whole to complete relative circular motion.

[0009] Preferably, the displacement sensor is located on one side of the limit seat and does not interfere with the movement of other components.

[0010] Compared with the prior art, the advantages and positive effects of the present utility model are as follows.

[0011] 1. In the present utility model, during use, by installing a cylinder on the working frame and cooperating with a sliding rod to drive the frame to slide on the guide rail, and then installing a limit seat and a bearing block structure on the frame. Both the limit seat and the bearing block can slide on the frame. The slide rail structure on the frame guides the sliding of the limit seat. When measuring the torque, the displacement sensor and the torque limiter are combined to complete the detection work of the torque of the wheel nut. For the wheel nut that meets the requirements, the pull-off force is detected. The cylinder is driven twice to apply a pressure of 200 N to the wheel nut and monitored by a pressure sensor. The above completes the detection work of the torque and pull-off force of the wheel nut. Compared with the conventional method of manually detecting the torque and pull-off force of the wheel nut, the technical solution adopted by the present utility model can realize the semi-automatic detection of the torque and pull-off force of the wheel nut, meet the requirements of modern production and processing, have high detection accuracy, liberate the labor intensity of the staff, have a compact overall structure, and are easy for the staff to install and maintain, solving the problems that the torque and pull-off force of the existing wheel nut are manually detected by the staff, no special detection device is designed to detect the relevant data of the torque and pull-off force of the wheel nut, and the existing detection efficiency is low and the detection accuracy is low.

[0012] 2. In the present utility model, during use, through the structural design of the floating head, the thread gauge can quickly be positioned and abutted against the nut to be measured, and the position design of the displacement sensor does not affect the movement of the relevant detection components. Description of the Drawings

[0013] Figure 1This is the overall view of the detection device for the torque and press-off force of the wheel nut of the present utility model;

[0014] Figure 2 This is the schematic structural diagram of the left-side perspective state of the detection device for the torque and press-off force of the wheel nut of the present utility model;

[0015] Figure 3 It is Figure 2 The partial structural schematic diagram of part A in

[0016] Legend: 1. Working frame; 101. Cylinder; 102. Slide bar; 2. Guide rail; 3. Frame; 301. Connecting seat; 302. Pressure sensor; 303. Displacement sensor; 4. Slide rail; 401. Limit seat; 402. Nut to be measured; 403. Support rod; 404. Platform; 5. Bearing seat; 501. Motor; 502. Rotor; 503. Floating head; 504. Torque limiter; 505. Rotating rod; 506. Thread gauge; 507. Pin shaft; 508. Bush; 509. Coupling. Specific implementation mode

[0017] In order to be able to more clearly understand the above-mentioned objects, features and advantages of the present utility model, the present utility model will be further described below in conjunction with the drawings and embodiments. It should be noted that, without conflict, the embodiments of the present application and the features in the embodiments can be combined with each other.

[0018] In the following description, many specific details are set forth in order to fully understand the present utility model. However, the present utility model can also be implemented in other ways different from those described herein. Therefore, the present utility model is not limited by the specific embodiments disclosed in the following specification.

[0019] The utility model provides a device for detecting the torque and press-off force of wheel nuts, which comprises a working frame 1. At the top position of the working frame 1, a cylinder 101 is installed. The cylinder 101 is slidably connected with a slide rod 102. A guide rail 2 is fixedly connected to the working frame 1. A frame 3 is slidably connected to the guide rail 2. A fixed connection is established between the frame 3 and the slide rod 102 through a connecting seat 301. Slide rails 4 are symmetrically distributed on the frame 3. A limit seat 401 is slidably arranged in the slide rail 4. A floating head 503 is rotatably connected in the limit seat 401. A thread gauge 506 is installed at the bottom of the floating head 503. A nut to be measured 402 is installed below the thread gauge 506. A platform 404 is installed on the right side of the working frame 1. The nut to be measured 402 is installed in the platform 404. A pressure sensor 302 is also installed on the connecting seat 301. A displacement sensor 303 is also installed on the frame 3. A bearing seat 5 is slidably installed above the limit seat 401 on the slide rail 4. A motor 501 is installed at the top of the frame 3. A rotor 502 is rotatably connected in the motor 501. A support rod 403 is installed between the limit seat 401 and the bearing seat 5. A rotating rod 505 is rotatably connected in the bearing seat 5. The rotating rod 505 is communicated with the rotor 502. A bushing 508 is slidably connected below the rotating rod 505. The rotating rod 505 and the bushing 508 are connected and limited through a pin shaft 507. The bushing 508 can be connected with the rotating rod 505 into a whole with the assistance of the pin shaft 507 to complete relative circular motion.

[0020] When the wheel nut torque and press-off force detection device is actually used, the nut 402 to be tested is installed on the platform. Then, the cylinder 101 drives the slide bar 102 to work. The slide bar 102 cooperates with the frame 3 on the connecting seat 301 to slide on the working frame 1 until the thread gauge 506 on the frame 3 abuts against the nut 402 to be tested, and then the cylinder 101 stops working. Then, the motor 501 on the frame 3 starts to work. The motor 501 drives the rotor 502 to rotate, and the rotor 502 drives the rotating rod 505 to rotate. Since the rotating rod 505 and the bushing 508 are limited by the pin shaft 507, when the torque of the wheel nut is tested, the pin shaft 507 connects the rotating rod 505 and the bushing 508 into a whole. Driven by the rotor 502, the whole formed by the rotating rod 505 and the bushing 508 rotates. The bushing 508 and the floating head 503 are fixedly connected. The rotation of the bushing 508 drives the floating head 503 to rotate, and finally drives the thread gauge 506 below the floating head 503 to rotate towards the nut 402 to be tested. While the thread gauge 506 is rotating, the structure of the bushing 508 connected to the floating head above the thread gauge 506 displaces upward relative to the structure of the rotating rod 505. At the same time, when the bushing 508 slides, it is limited and assisted by the support rod 403 between the limit seat 401 and the bearing seat 5 to ensure the orderly progress of the measurement work. At this time, the displacement sensor 303 on the frame 3 monitors the relative displacement generated by the bushing 508, and the collected data is uniformly transmitted to the central processor for unified processing by the staff. At the same time, when the torque reaches the limit, the torque limiter 504 between the rotor 502 and the coupling 509 directly starts to work. After overload, the torque limiter 504 immediately disengages, which proves that the nut 402 to be tested does not meet the torque test. If the nut 402 to be tested meets the torque detection requirements, the motor 501 stops working, and the cylinder 101 drives the slide bar 102 to continue to move downward. At the same time, the cylinder 101 is controlled to apply a pressure of 200 N downward and maintain it for one second. During the pressure holding process, if the data monitored by the pressure sensor 302 does not change, it proves that the press-off force of the nut 402 to be tested meets the requirements; if there is a change, it does not meet the requirements. By installing the cylinder 101 on the working frame 1 to cooperate with the slide bar 102 to drive the frame 3 to slide on the guide rail 2, and then installing the limit seat 401 and the bearing seat 5 structure on the frame 3. Both the limit seat 401 and the bearing seat 5 can slide on the frame 3, and the slide rail 4 structure on the frame 3 plays a guiding role for the sliding of the limit seat 401. When measuring the torque, the displacement sensor 303 and the torque limiter 504 are combined to complete the detection work of the wheel nut torque. For the wheel nuts that meet the requirements, the press-off force is detected. The cylinder 101 is driven for the second time to apply a pressure of 200 N to the wheel nut and cooperate with the pressure sensor 302 for monitoring. The above completes the detection work of the wheel nut torque and press-off force. Compared with the conventional method of manually detecting the wheel nut torque and press-off force,The technical solution adopted by the utility model can realize the semi-automatic detection of the torque and the press-off force of the wheel nut, meet the requirements of modern production and processing, have high detection accuracy, liberate the labor intensity of the staff, have a compact overall structure, and are easy for the staff to install and maintain.

[0021] As Figures 1-3 shown, a coupling 509 is installed between the rotor 502 and the bearing block 5, and a torque limiter 504 is also installed between the coupling 509 and the rotor 502. The displacement sensor 303 is located on one side of the limit seat 401 and does not interfere with the movement of other components when moving.

[0022] The effect achieved by the entire Embodiment 1 is that during use, through the structural design of the floating head 503, the thread gauge 506 can quickly be positioned and abutted against the nut 402 to be measured, and the position design of the displacement sensor 303 does not affect the movement of relevant detection components.

[0023] Working principle: Install the nut 402 to be measured on the platform, and then the cylinder 101 drives the slide bar 102 to work. The slide bar 102 cooperates with the frame 3 on the connecting seat 301 to slide on the working frame 1 until the thread gauge 506 on the frame 3 abuts against the nut 402 to be measured, at which point the cylinder 101 stops working. Then, the motor 501 on the frame 3 starts to work. The motor 501 drives the rotor 502 to rotate, and the rotor 502 drives the rotating rod 505 to rotate. Since the rotating rod 505 and the bushing 508 are limited by the pin shaft 507, when the wheel nut is subjected to torque testing, the pin shaft 507 connects the rotating rod 505 and the bushing 508 into a whole. Driven by the rotor 502, the whole formed by the rotating rod 505 and the bushing 508 rotates. The bushing 508 and the floating head 503 are fixedly connected, and the rotation of the bushing 508 drives the floating head 503 to rotate, ultimately driving the thread gauge 506 below the floating head 503 to rotate towards the nut 402 to be measured. While the thread gauge 506 is rotating, the structure of the bushing 508 connected to the floating head above the thread gauge 506 displaces upward relative to the structure of the rotating rod 505. At the same time, when the bushing 508 slides, it is limited and assisted by the support rod 403 between the limit seat 401 and the bearing seat 5 to ensure the orderly progress of the measurement work. At this time, the displacement sensor 303 on the frame 3 monitors the relative displacement generated by the bushing 508, and the collected data is uniformly transmitted to the central processor for unified processing by the staff. At the same time, when the torque reaches the limit, the torque limiter 504 between the rotor 502 and the coupling 509 directly starts to work. After overload, the torque limiter 504 immediately disengages, indicating that the nut 402 to be measured does not meet the torque test requirements. If the nut 402 to be measured meets the torque detection requirements, the motor 501 stops working, and the cylinder 101 drives the slide bar 102 to continue moving downward. At the same time, the cylinder 101 is controlled to apply a pressure of 200 N downward, and the pressure sensor 302 monitors it in real time and maintains it for one second. During the pressure holding process, if the data monitored by the pressure sensor 302 does not change, it proves that the stripping force of the nut 402 to be measured meets the requirements; otherwise, it does not meet the requirements.

Claims

1. A wheel nut torque and press-off force detection device, comprising a working frame (1), wherein a cylinder (101) is installed at the top position of the working frame (1), and the cylinder (101) is slidably connected with a slide bar (102), characterized in that, A guide rail (2) is fixedly connected to the working frame (1). A frame (3) is slidably connected to the guide rail (2). The frame (3) is fixedly connected to the sliding rod (102) through a connecting seat (301). Slide rails (4) are symmetrically distributed on the frame (3). A limit seat (401) is slidably arranged in the slide rail (4). A floating head (503) is rotatably connected in the limit seat (401). A thread gauge (506) is installed at the bottom of the floating head (503). A nut to be measured (402) is installed below the thread gauge (506). A platform (404) is installed on the right side of the working frame (1). The nut to be measured (402) is installed in the platform (404). A pressure sensor (302) is also installed on the connecting seat (301). A displacement sensor (303) is also installed on the frame (3).

2. The wheel nut torque and press-off force detection device according to claim 1, wherein A bearing seat (5) is slidably installed above the limit seat (401) on the slide rail (4). A motor (501) is installed at the top of the frame (3). A rotor (502) is rotatably connected in the motor (501). A support rod (403) is installed between the limit seat (401) and the bearing seat (5). A rotating rod (505) is rotatably connected in the bearing seat (5). The rotating rod (505) communicates with the rotor (502). A sleeve (508) is slidably connected below the rotating rod (505). The rotating rod (505) and the sleeve (508) are connected and limited by a pin shaft (507). The floating head (503) and the sleeve (508) are fixedly connected to each other.

3. The wheel nut torque and press-off force detection device according to claim 2, wherein, A coupling (509) is installed between the rotor (502) and the bearing seat (5). A torque limiter (504) is also installed between the coupling (509) and the rotor (502).

4. The wheel nut torque and press-off force detection device according to claim 2, wherein With the assistance of the pin shaft (507), the sleeve (508) and the rotating rod (505) can be connected into a whole to complete relative circular motion.

5. The wheel nut torque and press-off force detection device according to claim 1, characterized in that The displacement sensor (303) is located on one side of the limit seat (401) and does not interfere with the movement of other components.

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