Novel elevator barring hand wheel device

Abstract

The utility model provides a novel elevator barring hand wheel device, which is used for adjusting the position of an elevator car through a barring hand wheel when an elevator is maintained, and comprises a stepping motor for driving the barring hand wheel and a sliding rail, the stepping motor is fixed on the stepping motor support; the bottom of the stepping motor support is connected with the sliding rail through a sliding block. The turning handwheel is fixed on the bearing support; the bottom of the bearing support is fixed to the sliding rail, and the position of the bearing support is locked through the position fixing handle. When an elevator is maintained, the stepping motor arranged on the barring hand wheel is used for controlling the barring hand wheel to rotate and drive the main shaft through inching operation of the maintenance remote controller, so that the car slowly moves to a target layer, and the moving distance can be monitored.

Description

Technical Field

[0001] This invention relates to the field of elevator technology, and in particular to a novel elevator handwheel device. Background Technology

[0002] In addition to the procedures to be followed when an elevator malfunctions, a manual brake release device must be connected to the main drive brake to operate it. After the operator manually releases the brake, there is a possibility that the car may move on its own due to gravity differences. If the car moves too fast near the terminal station, it may hit the bottom or top of the elevator. Therefore, it is necessary to inform the operator of the car's current position. Since the operating force for manually moving the car should not exceed 150N, the original method required manually rotating the drive shaft, which was inconvenient.

[0003] This utility model patent utilizes a stepper motor mounted on the handwheel of the car to control the rotation of the handwheel and drive the main shaft through the jogging operation of the maintenance remote control, so that the car slowly moves to the target floor, and the moving distance can be monitored. Summary of the Invention

[0004] This utility model proposes a novel elevator handwheel device, which can be used to control the rotation of the handwheel to drive the main shaft by using a stepper motor mounted on the handwheel and jogging operation via a maintenance remote control during elevator maintenance. This allows the car to slowly move to the target floor, and the distance moved can be monitored.

[0005] The present invention adopts the following technical solution.

[0006] A novel elevator car handwheel device is disclosed, used to adjust the position of the elevator car during elevator maintenance by turning the handwheel. The handwheel device includes a stepper motor for driving the handwheel and a slide rail. The stepper motor is fixed to a stepper motor support. The bottom of the stepper motor support is connected to the slide rail via a slider. The handwheel is fixed to a bearing support. The bottom of the bearing support is fixed to the slide rail and its position is locked by a position fixing handle.

[0007] The output shaft of the stepper motor is connected to the center of the handwheel via an adapter plate.

[0008] The stepper motor is connected to a driver for controlling the stepper motor.

[0009] The driver is connected to the PLC controller, which adjusts the stepper motor's operating conditions by controlling the driver.

[0010] When the elevator is under maintenance, the PLC controller controls the stepper motor to rotate the handwheel of the traction machine, and the rotational force is applied to the elevator traction machine shaft to drive the elevator car under maintenance to slowly move to the required target floor.

[0011] The PLC controller is connected to the laser rangefinder. When the elevator is under maintenance, the PLC controller monitors the position of the elevator car through the laser rangefinder.

[0012] The laser ranging device includes a laser ranging module, a reflector, and a fixed bracket.

[0013] The reflector is located at the bottom of the elevator car, and the laser ranging module is located at the bottom of the elevator pit; the ranging direction of the laser ranging module is pointed towards the reflector.

[0014] The PLC controller is connected to the wireless remote control switch module via a wireless communication link. The wireless remote control switch module is used to manually control the stepper motor during emergency maintenance.

[0015] The wireless remote control switch module is equipped with an emergency stop button, a forward rotation button, and a reverse rotation button for manual operation.

[0016] The present invention enables elevator maintenance by using a stepper motor mounted on the handwheel to control the rotation of the handwheel and drive the main shaft via a maintenance remote control, thereby slowly moving the car to the target floor, and the distance traveled can be monitored. Attached Figure Description

[0017] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments:

[0018] Appendix Figure 1 This is a schematic diagram of the handwheel of the present invention;

[0019] Appendix Figure 2 This is a schematic diagram of the laser ranging device in this utility model;

[0020] Appendix Figure 3 This is a schematic diagram of the wireless remote control switch module in this utility model;

[0021] In the diagram: 1-Stepper motor; 2-Driver; 3-Handwheel; 4-Adapter plate; 5-Slider; 6-Stepper motor support; 7-Slide rail; 8-Bearing support; 9-Position fixing handle; 10-Elevator car; 11-Reflector; 12-Laser ranging module; 13-Elevator pit; 14-Fixed bracket. Detailed Implementation

[0022] As shown in the figure, a novel elevator car handwheel device is used to adjust the position of the elevator car 10 during elevator maintenance by turning the handwheel 3. The handwheel device includes a stepper motor 1 for driving the handwheel and a slide rail 7. The stepper motor is fixed to a stepper motor support 6. The bottom of the stepper motor support is connected to the slide rail via a slider 5. The handwheel is fixed to a bearing support 8. The bottom of the bearing support is fixed to the slide rail and its position is locked by a position fixing handle 9.

[0023] The output shaft of the stepper motor is connected to the center of the handwheel via the adapter plate 4.

[0024] The stepper motor is connected to a driver 2 for controlling the stepper motor.

[0025] The driver is connected to the PLC controller, which adjusts the stepper motor's operating conditions by controlling the driver.

[0026] When the elevator is under maintenance, the PLC controller controls the stepper motor to rotate the handwheel of the traction machine, and the rotational force is applied to the elevator traction machine shaft to drive the elevator car under maintenance to slowly move to the required target floor.

[0027] The PLC controller is connected to the laser rangefinder. When the elevator is under maintenance, the PLC controller monitors the position of the elevator car through the laser rangefinder.

[0028] The laser ranging device includes a laser ranging module 12, a reflector 11, and a fixed bracket 14.

[0029] The reflector is located at the bottom of the elevator car, and the laser ranging module is located at the bottom of the elevator pit 13; the ranging direction of the laser ranging module is pointed towards the reflector.

[0030] The PLC controller is connected to the wireless remote control switch module via a wireless communication link. The wireless remote control switch module is used to manually control the stepper motor during emergency maintenance.

[0031] The wireless remote control switch module is equipped with an emergency stop button, a forward rotation button, and a reverse rotation button for manual operation.

[0032] Example:

[0033] In this example, the position of the bearing support at the slide rail is adjustable. To adjust, first unlock the position fixing handle, then adjust the position of the bearing support, and finally lock its position with the position fixing handle.

[0034] In this example, the bottom of the stepper motor support is connected to the slide rail via slider 5. When the stepper motor drives the handwheel to rotate, if the handwheel moves axially during rotation, the stepper motor support will slide slightly on the slide rail so that the stepper motor can be stably connected to the handwheel center via the adapter plate.

[0035] In this example, the operating force F of the handwheel is 150N, and the diameter D of the handwheel is 0.32m. Therefore, the torque F1 is: T1 = F x D / 2 = 150N x 0.16m = 24 Nm. Considering the transmission efficiency (taken as 0.85), the motor output torque T2 needs to be: T2 = 24 / 0.85 = 28Nm. The stepper motor with a rated torque greater than 28Nm is selected, and the holding torque should be greater than 1.1-1.5 times the rated torque. Therefore, the holding torque T3 is 28 x 1.4 ≈ 40Nm.

[0036] In this example, the rotational speed of the handwheel is 10 rpm, and the angular velocity ω = (10 x 2π) / 60 ≈ 1.05 rad / s

[0037] Power P = 24 x 1.05 / 0.85 = 30W

[0038] Stepper motor rated power ≥30W

[0039] Stepper motor model: Two-phase stepper motor, holding torque 40Nm, phase current 7A, rated voltage 63V, step angle 1.8 degrees. Model: Buke 2S130Y-063R8.

[0040] In this example, the PLC controller is a Siemens S7-200 Smart SR20, which controls the stepper motor for jogging forward and reverse rotation. The PLC communicates serially with a laser rangefinder via a human-machine interface (HMI). The laser rangefinder module calculates the distance based on the elevator car's movement, and displays it on the HMI, allowing maintenance personnel to accurately determine the car's current position and perform necessary repairs and adjustments.

[0041] In this example, the Kunlun Tongtai TPC1231Ni HMI is used. This HMI is a smart IoT touchscreen with a Cortex-A7 multi-core CPU and a 1GHz clock speed. It features a 12-inch TFT LCD screen with a resolution of 1024*768 and is a four-wire resistive touchscreen. It includes one WiFi port, one Ethernet port, and one serial interface (RS422 / RS485 / RS232). The HMI communicates with the Siemens S7-200 PLC via RS485 and displays the current position of the elevator car on the screen. The touchscreen can be connected to an external Ethernet network and can also connect to a mobile phone via WiFi for remote monitoring of the elevator car's position.

Claims

1. A new type of elevator hand-wheel device for adjusting the position of the elevator car during elevator maintenance by means of a hand-wheel, characterized in that: The handwheel device includes a stepper motor for driving the handwheel and a slide rail; the stepper motor is fixed to a stepper motor support; the bottom of the stepper motor support is connected to the slide rail via a slider; the handwheel is fixed to a bearing support; the bottom of the bearing support is fixed to the slide rail and its position is locked by a position fixing handle.

2. A new type of elevator hand wheel device for turning the elevator shaft, according to claim 1, characterized in that: The output shaft of the stepper motor is connected to the center of the handwheel via an adapter plate.

3. A new type of elevator hand-wheel device for turning the elevator shaft, according to claim 1, characterized in that: The stepper motor is connected to a driver for controlling the stepper motor.

4. A new type of elevator hand-wheel device for turning the elevator shaft, according to claim 3, characterized in that: The driver is connected to the PLC controller, which adjusts the stepper motor's operating conditions by controlling the driver.

5. A new type of elevator hand-wheel device for turning the elevator shaft, according to claim 4, characterized in that: When the elevator is under maintenance, the PLC controller controls the stepper motor to rotate the handwheel of the traction machine, and the rotational force is applied to the elevator traction machine shaft to drive the elevator car under maintenance to slowly move to the required target floor.

6. A new type of elevator hand-wheel device for turning the elevator shaft, according to claim 4, characterized in that: The PLC controller is connected to the laser rangefinder. When the elevator is under maintenance, the PLC controller monitors the position of the elevator car through the laser rangefinder.

7. A new type of elevator hand-wheel device for turning the elevator shaft, according to claim 6, characterized in that: The laser ranging device includes a laser ranging module, a reflector, and a fixed bracket.

8. A new type of elevator hand-wheel device for turning the elevator shaft, according to claim 7, characterized in that: The reflector is located at the bottom of the elevator car, and the laser ranging module is located at the bottom of the elevator pit; the ranging direction of the laser ranging module is pointed towards the reflector.

9. A new type of elevator hand-wheel device for turning the elevator shaft, according to claim 4, characterized in that: The PLC controller is connected to the wireless remote control switch module via a wireless communication link. The wireless remote control switch module is used to manually control the stepper motor during emergency maintenance.

10. A new type of elevator hand-wheel device for turning the elevator shaft, according to claim 9, characterized in that: The wireless remote control switch module is equipped with an emergency stop button, a forward rotation button, and a reverse rotation button for manual operation.

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