Simulation device for bolt loosening caused by vibration

Abstract

A simulation device for bolt loosening caused by vibration comprises a fixing support, a motor is arranged on the fixing support, a power output shaft of the motor is provided with an eccentric device and is coaxially connected with a screw, a screw rod of the screw is in threaded connection with a nut, and the power input end of the motor is connected with a DC power source through a controller capable of controlling forward and reverse rotation of the motor. The motor is controlled by the controller to rotate forwards or reversely, the motor drives the screw to rotate forwards or reversely, and meanwhile, forward or reverse vibration is generated through the eccentric device, so that the nut is loosened or fastened; the device is stable and reliable, can accurately display the influence of vibration on the bolt, especially truly simulates the visual effect of the vibration state of a train, greatly improves the feeling of personnel on the vibration, and improves the training efficiency.

Description

TECHNICAL FIELD

[0001] The utility model relates to fastener fault simulation technical field, concretely relates to a simulation device of bolt loosening caused by vibration. BACKGROUND

[0002] In the field of subway transportation, as a kind of connecting piece, bolt has wide application, and the tightening state of bolt directly influences the working performance of equipment, and if loosening problem occurs, disastrous consequences can be caused.The existing training method of bolt loosening caused by vibration simulation mainly has the following deficiencies:

[0003] 1, personnel intuitive feeling degree is not enough: about subway equipment maintenance bolt fastening link, teaching training is more combined with theory and scene;Theory is explained+PPT+book content and cooperates video, and due to considering the safety of students, the state of existing equipment and other factors, personnel cannot enter the scene at will when obtaining relevant on-the-job certificate, personnel can only understand bolt loosening caused by vibration through description and picture, without intuitive feeling.

[0004] 2, the process of loosening caused by vibration is long: bolt is under the condition of fastening, stress change and loosening caused by train vibration need a long accumulation process, generally lasting for months or even years. SUMMARY

[0005] In order to overcome the above-mentioned shortcomings of prior art, the utility model aims at providing a simulation device of bolt loosening caused by vibration, which realizes fast simulation of bolt loosening condition by setting eccentric device on the power output shaft of motor, and has the characteristics of short simulation time and safety.

[0006] In order to achieve the above-mentioned purpose, the utility model adopts the technical scheme that:

[0007] A simulation device of bolt loosening caused by vibration, comprising a fixed support 1, a motor 2 is arranged on the fixed support 1, an eccentric device 3 is arranged on the power output shaft of the motor 2 and coaxially connected with a screw 4, a nut 5 is threadedly connected on the screw rod of the screw 4, and the power input end of the motor 2 is connected with DC power supply through a controller 6 capable of controlling the forward and reverse rotation of the motor 2.

[0008] The power output shaft of the motor 2 is connected with the screw 4 through a shaft coupling 7.

[0009] The controller 6 comprises a first terminal 601 connected with the positive pole of the DC power supply, a second terminal 602 connected with the negative pole of the DC power supply, a third terminal 603 connected with the first motor terminal A1 of the motor 2, a fourth terminal 604 connected with the second motor terminal A2 of the motor 2, a fifth terminal 605 connected with the second terminal 602 and a sixth terminal 606 connected with the first terminal 601.

[0010] Compared with the prior art, the utility model has the beneficial effects that:

[0011] 1. The utility model discloses a eccentric ware 3 is set up on motor 2, and the motor is controlled by controller 6 and rotates reversely, simulates nut 5 loosening or fastening, improves the efficiency and the safety of simulation training.

[0012] 2. The utility model discloses a coupling 7 is connected with the power output shaft of motor 2 and screw 4, improves the stability of screw 4 rotation, improves the display effect of simulation.

[0013] 3. The utility model discloses a controller 6 by adjusting the mutual connection between first terminal 601, second terminal 602, third terminal 603, fourth terminal 604, fifth terminal 605 and sixth terminal 606, control motor 2's rotation and reverse, reduce the operation difficulty, improve the simulation efficiency.

[0014] In conclusion, the utility model has the characteristics of high simulation efficiency, high safety and good display effect. ACCURACY OF DRAWINGS

[0015] Figure 1 It is the structure principle drawing of the utility model device.

[0016] Figure 2 It is the control circuit diagram of the utility model device.

[0017] In the drawing, 1. Fixed support;2. Motor;3. Eccentric ware;4. Screw;5. Nut;6. Controller;601. First terminal;602. Second terminal;603. Third terminal;604. Fourth terminal;605. Fifth terminal;606. Sixth terminal;7. Coupling;A1. First motor terminal;A2. Second motor terminal. DETAILED DESCRIPTION

[0018] The structure principle and working principle of the utility model will be described in detail in combination with the drawings.

[0019] As Figure 1 And Figure 2As shown, a bolt loosening simulation device caused by vibration comprises a fixed support 1, an optical shaft DC brushless motor 2 arranged on the fixed support 1, an eccentric device 3 arranged on a power output shaft of the optical shaft DC brushless motor 2 and connected with a screw 4 through a shaft coupling 7, and a nut 5 threadedly connected on a screw rod of the screw 4, and the power input end of the optical shaft DC brushless motor 2 is connected with a DC 9V power supply through a controller 6 capable of controlling the forward and reverse rotation of the motor 2.

[0020] The controller 6 comprises a first terminal 601 connected with the positive pole of the DC 9V power supply, a second terminal 602 connected with the negative pole of the DC 9V power supply, a third terminal 603 connected with the first motor terminal A1 of the optical shaft DC brushless motor 2, a fourth terminal 604 connected with the second motor terminal A2 of the optical shaft DC brushless motor 2, a fifth terminal 605 connected with the second terminal 602, and a sixth terminal 606 connected with the first terminal 601.

[0021] The working principle of the utility model is as follows:

[0022] The power supply adopts an industrial DC 9V battery, and when the first terminal 601 and the third terminal 603 are communicated, and the second terminal 602 and the fourth terminal 604 are communicated during work, positive electricity passes through the first terminal 601, the third terminal 603, the first motor terminal A1, the optical shaft DC brushless motor 2, the second motor terminal A2, the fourth terminal 604 and the second terminal 602 to the negative pole in sequence, the power output shaft of the optical shaft DC brushless motor 2 rotates in the positive direction, drives the screw 4 to rotate in the positive direction through the shaft coupling, and generates reverse rotation vibration through the eccentric device 3, and the nut 5 moves downward to loosen at this time; when the third terminal 603 and the fifth terminal 605 are communicated, and the fourth terminal 604 and the sixth terminal 606 are communicated, positive electricity passes through the first terminal 601, the sixth terminal 606, the fourth terminal 604, the second motor terminal A2, the optical shaft DC brushless motor 2, the first motor terminal A1, the third terminal 603, the fifth terminal 605 and the second terminal 602 to the negative pole in sequence, the power output shaft of the optical shaft DC brushless motor 2 reverses, drives the screw 4 to reverse through the shaft coupling, and generates positive rotation vibration through the eccentric device 3, and the nut 5 moves upward to tighten at this time.

Claims

1. A device for simulating bolt loosening caused by vibration, comprising a fixed bracket (1), characterized in that, A motor (2) is mounted on a fixed bracket (1). An eccentric (3) is mounted on the power output shaft of the motor (2) and a screw (4) is coaxially connected to it. A nut (5) is threaded onto the screw (4). The power input terminal of the motor (2) is connected to a DC power supply through a controller (6) that can control the forward and reverse rotation of the motor (2).

2. The device for simulating bolt loosening caused by vibration according to claim 1, characterized in that, The power output shaft of the motor (2) is connected to the screw (4) via a coupling (7).

3. The device for simulating bolt loosening caused by vibration according to claim 1, characterized in that, The controller (6) includes a first terminal (601) connected to the positive terminal of the DC power supply, a second terminal (602) connected to the negative terminal of the DC power supply, a third terminal (603) connected to the first motor terminal (A1) of the motor (2), a fourth terminal (604) connected to the second motor terminal (A2) of the motor (2), a fifth terminal (605) connected to the second terminal (602), and a sixth terminal (606) connected to the first terminal (601).

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