Elevator speed governor rope sheave acceleration device

Abstract

The utility model discloses a rope wheel accelerating device of an elevator speed governor. The rope wheel accelerating device comprises a driving motor, a driving wheel and a motor control device, the driving motor is installed on the ground through a height-adjustable motor support, a motor shaft is coaxially and fixedly connected with a driving wheel, the driving wheel is rotationally connected with a speed limiter rope wheel in the same direction through an annular steel wire rope, the motor control device comprises a control box, and the control box is provided with a power switch, a forward and reverse rotation switch and a speed regulation switch. A power supply unit is arranged in the control box and electrically connected with a power switch and the driving motor, and the power switch is connected with a power plug through a power line. The speed regulation switch is used for controlling the rotating speed of the driving motor. The forward and reverse rotation switch is used for controlling forward rotation and reverse rotation of the driving motor. By using the device, the checking work can be conveniently carried out, the working intensity of the checking personnel of the speed governor is greatly reduced, and the working efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of elevator speed limiters, and particularly relates to an elevator speed limiter rope wheel acceleration device. Background Art

[0002] The speed limiter is an important safety component of an elevator. When the speed limiter detects that the elevator is descending overspeed, it first triggers the descending electrical switch of the speed limiter, forcing the elevator to cut off the main power supply. If the elevator continues to accelerate downward, the pawl of the speed limiter will catch the ratchet of the speed limiter, triggering the safety gear of the elevator to act, so that the elevator can be safely stopped on the guide rail, preventing the elevator car from hitting the buffer and avoiding harm to passengers. According to regulations, the speed limiters of in-service elevators should be regularly calibrated for the operating speed of the speed limiter.

[0003] At present, the calibration of the speed limiter mainly adopts an on-site calibration mode, that is, the speed limiter calibration personnel disconnect the main power supply of the elevator, disconnect the speed limiter wire rope from the speed limiter rope wheel. After wiring is completed, hold the motor equipped with a rubber wheel, and drive the rope wheel of the speed limiter to rotate at an accelerated speed through the frictional drive of the motor, and sequentially measure and record the descending electrical operating speed, descending mechanical operating speed and ascending electrical operating speed of the speed limiter.

[0004] Since the installation height of the speed limiter is relatively low, the calibration personnel need to squat for a long time to hold the motor for speed limiter speed calibration, which is easy to cause fatigue. And the speed of the existing hand-held motor is slowly accelerated, and it takes a long time to reach the speed measurement speed, resulting in low calibration work efficiency. Summary of the Utility Model

[0005] In order to solve the above problems, the utility model provides an elevator speed limiter rope wheel acceleration device.

[0006] The technical solution adopted by the utility model is:

[0007] An elevator speed limiter rope wheel acceleration device includes a driving motor, a driving wheel and a motor control device; the driving motor is installed on the ground through a motor bracket with adjustable height, the motor shaft is coaxially and fixedly connected with the driving wheel, the driving wheel is located above the speed limiter rope wheel, and is rotationally connected with the speed limiter rope wheel in the same direction through an annular wire rope. The motor control device includes a control box, on which there are a power switch, a forward and reverse switch and a speed regulation switch. Inside the control box, there is a power supply unit, which is electrically connected with the power switch and the driving motor. The power switch is connected with a power plug through a power cord; the speed regulation switch is used to control the rotation speed of the driving motor, and the forward and reverse switch is used to control the forward and reverse rotation of the driving motor.

[0008] The drive motor drives the driving wheel to rotate. The driving wheel drives the speed limiter rope wheel to rotate synchronously through the annular steel wire rope. The linear speed of the annular steel wire rope can be quickly adjusted to the detection speed through the speed regulating switch. The forward and reverse rotation of the speed limiter rope wheel can be controlled through the forward and reverse switch, and the start and stop of the drive motor can be controlled through the power switch.

[0009] Furthermore, the outer circumferential surface of the driving wheel is provided with a wheel groove, and the cross-sectional shape of the wheel groove is the same as that of the rope groove of the speed limiter rope wheel, ensuring a reliable connection between the driving wheel and the speed limiter rope wheel through the steel wire rope.

[0010] Furthermore, the drive motor is a reduction motor, which is small in volume and convenient for installation.

[0011] Furthermore, the motor shaft is coaxially and fixedly connected to the wheel shaft of the driving wheel through a coupling. Different diameter motor shafts and wheel shafts can be connected through the coupling.

[0012] Furthermore, the coupling is a flange coupling. The flange coupling has a simple structure, can transmit a large torque, and can ensure a high alignment accuracy between the two shafts.

[0013] Furthermore, the motor bracket includes a triangular chassis, a telescopic rod, and a mounting plate. The lower end of the triangular chassis is provided with a silica gel suction cup. The mounting plate is connected to the triangular chassis through the telescopic rod, and the mounting plate is used to fixedly connect the drive motor. The triangular chassis has high stability, and the motor bracket can be easily adsorbed and fixed on the floor of the elevator shaft through the silica gel suction cup. The length of the telescopic rod is adjustable, enabling the height adjustment of the motor bracket.

[0014] Advantages of the present utility model:

[0015] 1. Using this device, the calibration work can be carried out more conveniently, greatly reducing the work intensity of the speed limiter calibration personnel.

[0016] 2. By adjusting the speed of the drive motor through the speed regulating switch, the speed limiter rope wheel can quickly reach the detection speed, improving work efficiency. Description of the Drawings

[0017] Figure 1 It is a schematic structural diagram of the elevator speed limiter rope wheel acceleration device of the present application. Detailed Embodiments

[0018] To make the purpose, technical solutions, and advantages of the present utility model clearer, the technical solutions of the present utility model will be clearly and completely described below in conjunction with the drawings and a preferred embodiment.

[0019] Refer to Figure 1 , an elevator speed limiter rope wheel acceleration device, including a motor bracket 1, a drive motor 4, a coupling 3, a driving wheel 2, an annular steel wire rope 6, and a motor control device.

[0020] The motor support 1 includes a triangular base frame, a telescopic rod, and a mounting plate. The triangular base frame consists of a fixed block with a mounting hole in the middle and three legs hinged to the lower end of the fixed block. Silicone suction cups are fixedly connected to the bottoms of the three legs. The lower end of the telescopic rod is fixedly sleeved in the mounting hole of the fixed block, and the upper end is fixedly connected to the mounting plate, which is used to fixedly connect the driving motor. The height of the motor support can be finely adjusted by adjusting the opening angle of the three legs, and it is fixed by the silicone suction cups after adjustment; the height of the motor support can be greatly adjusted by adjusting the length of the telescopic rod, and the telescopic rod is locked by a nut after adjustment.

[0021] The driving motor 4 is fixed on the mounting plate of the motor support 1 by screws. The motor shaft 41 is coaxially and fixedly connected to the wheel shaft 21 of the driving wheel 2 through a coupling 3. Preferably, the coupling 3 is a flange coupling, and the driving motor 4 is a reduction motor, which has a small volume and can provide a large torque. The specific model is selected according to the magnitude of the driving force. The driving motor 4 drives the driving wheel 2 to rotate through the coupling 3.

[0022] In this embodiment, only the driving motor 4 is supported on the motor support 1, and the driving wheel 2 is suspended on the motor shaft 41; in other embodiments, in order to improve the rotational stability, the mounting plate of the motor support can also be lengthened so that it extends below the driving wheel, and the wheel shaft of the driving wheel is rotatably connected to the mounting plate through a bearing seat.

[0023] The driving wheel 2 is located above the governor rope pulley 6 and is rotatably connected in the same direction as the governor rope pulley 20 through an annular steel wire rope 6. The axis of the driving wheel 2 is parallel to the axis of the governor rope pulley. The outer circumferential surface of the driving wheel 2 is provided with a wheel groove, and the cross-sectional shape of the wheel groove is the same as that of the rope groove of the governor rope pulley 20. The driving motor 4 drives the driving wheel 2 to rotate, and the driving wheel 2 drives the governor rope pulley 20 to rotate synchronously through the annular steel wire rope 6.

[0024] The motor control device includes a control box 51. A power switch 54, a forward and reverse switch 55, and a speed regulation switch 52 are provided on the control box 51. A power supply unit is provided inside the control box 51. The power supply unit is electrically connected to the power switch 54 and the driving motor 4. The power switch 54 is connected to a power plug 53 through a power cord; the speed regulation switch 52 is used to control the rotation speed of the driving motor 4, and the forward and reverse switch 55 is used to control the forward and reverse rotation of the driving motor 4. The power supply method is not affected by the battery capacity compared with the acceleration device powered by a battery and can operate for a long time.

[0025] The usage method of this application is as follows:

[0026] 1. Disconnect the main power supply of the elevator;

[0027] 2. Disconnect the steel wire rope on the governor;

[0028] 3. Loosen the nut on the base shaft of the speed limiter, put the annular wire rope 6 on the speed limiter rope pulley 20, install the nut and tighten the nut;

[0029] 4. Install the motor bracket 1 of the drive motor 4, fix the drive motor 4 on the motor bracket 1, make the axes of the driving wheel 21 and the speed limiter rope pulley 20 parallel, put the other end of the annular wire rope 6 into the groove of the driving wheel 21, adjust the height of the motor bracket 1 to make the annular wire rope 6 tightened, and the driving wheel can drive the speed limiter rope pulley to rotate synchronously;

[0030] 5. Insert the power plug 53 into the socket, turn on the power switch 54 and the speed regulation switch 55, test the synchronism of the rotation of the driving wheel 21 and the speed limiter rope pulley 20, and make the speed limiter rope pulley 20 quickly reach the detection speed;

[0031] 6. Start the calibration of the speed limiter speed.

[0032] The above are only the preferred embodiments of the present invention. It should be pointed out that for those of ordinary skill in the art, without departing from the principle of the present invention, several improvements and refinements can be made, and these improvements and refinements are also within the protection scope of the present invention.

Claims

1. An elevator speed governor sheave acceleration device, characterized in that: It includes a driving motor, a driving wheel and a motor control device; the driving motor is installed on the ground through a motor bracket with adjustable height, the motor shaft is coaxially fixedly connected with the driving wheel, the driving wheel is located above the speed limiter rope wheel, and is connected to the speed limiter rope wheel in the same direction of rotation through an annular steel wire rope, the motor control device includes a control box, the control box is provided with a power switch, a forward and reverse switch and a speed regulating switch, the control box is provided with a power supply unit, the power supply unit is electrically connected to the power switch and the driving motor, and the power switch is connected to a power plug through a power cord; the speed regulating switch is used to control the speed of the driving motor, and the forward and reverse switch is used to control the forward and reverse rotation of the driving motor.

2. The elevator speed governor sheave acceleration device according to claim 1, characterized in that: The outer circumferential surface of the driving wheel is provided with a wheel groove, and the cross-sectional shape of the wheel groove is consistent with the rope groove of the speed limiter rope wheel.

3. The elevator speed governor sheave acceleration device according to claim 1, characterized in that: The driving motor is a reduction motor.

4. The elevator speed governor sheave acceleration device according to claim 1, characterized in that: The motor shaft is coaxially fixedly connected with the wheel shaft of the driving wheel through a coupling.

5. The elevator speed governor sheave acceleration device according to claim 4, characterized in that: The coupling is a flange coupling.

6. The elevator speed governor sheave acceleration device according to claim 1, characterized in that: The motor bracket includes a triangular base frame, a telescopic rod and a mounting plate. A silicone suction cup is provided at the lower end of the triangular base frame. The mounting plate is connected to the triangular base frame through the telescopic rod. The mounting plate is used to fix the drive motor.

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