Elevator drive protection system

Abstract

The utility model discloses a kind of hoist drive protection systems, it is provided with fixed drive shaft and driving device, driving device is fixed on drive shaft, driving device is provided with torsion plate and hoist connection, hoist is provided with fixed seat, torsion plate is provided with torsion sensor between fixed seat;Through the above structure setting, the equipment when running, if chain or hopper appears fault, it will instantaneously increase the torsion of fixed drive shaft on gear disc, gear disc operating speed instantaneously drops, but driving device continues power output, drives torsion plate extrusion or pull torsion sensor to further realize the transmission of torsion signal, after being connected with external control device, driving device can be controlled to stop.This utility model is further matched with the sensor on movable drive shaft, hoist drive system can be protected simultaneously on torsion and tension.

Description

Technical Field

[0001] This utility model belongs to the technical field of material conveying equipment, and specifically relates to a hoist drive protection system. Background Technology

[0002] In the field of material conveying technology, when a hoist is used to convey materials, the bucket is usually fixed by a conveyor chain, and the horizontal conveying of materials is achieved under the drive of the conveying drive device.

[0003] The current technical problem is that during the material conveying process, because the chain and the material are connected in a movable manner, if the hopper and the chain are pulled or deformed during operation, the hoppers will stack. At this time, the continuous power output of the drive machinery will pull and squeeze the hoppers and the chain, causing damage, or even damage to the entire conveying equipment.

[0004] In view of the shortcomings of the existing technology, the urgent technical problem to be solved by those skilled in the art is how to improve the technology and design a protection system that can monitor the operation of the line during the conveying process. If the traction failure of the hopper and chain occurs, the system can be quickly stopped or the operation adjusted to avoid failure of the chain, hopper or the entire conveying equipment. Summary of the Invention

[0005] To overcome the shortcomings of existing technologies, this utility model provides a hoist drive protection system with a novel structural design. A sensing device is installed between the drive unit and the equipment to detect the torque of the drive unit in real time, thereby avoiding technical problems such as hopper and chain jamming during operation.

[0006] To achieve the above technical objectives, the present invention adopts the following solution:

[0007] A hoist drive protection system includes a fixed drive shaft and a drive device. The drive device is fixed on the drive shaft, and a torsion plate is provided on the drive device and connected to the hoist. A fixed seat is provided on the hoist, and a torsion sensor is provided between the torsion plate and the fixed seat. The torsion sensor is connected to an external control device or the drive device.

[0008] The torsion plate is disposed around the fixed drive shaft.

[0009] The torsion plate is provided with a reinforcing rib, and a base is provided above the reinforcing rib. The torsion sensor is located between the base and the fixed seat.

[0010] The torsion plate extends horizontally to the outside, and the torsion sensor is located above or below the torsion plate.

[0011] It includes a movable drive shaft, and the front and rear side walls of the hoist are provided with adjustment grooves and horizontal guide devices. A drive shaft end seat is provided on the horizontal guide device. The drive shaft end seat is connected to an adjustment rod through a sensor, and a positioning seat is provided in cooperation with the adjustment rod. The adjustment rod is fixed on the positioning seat.

[0012] The beneficial effects of this utility model are as follows: This utility model is equipped with a fixed drive shaft and a drive device. The drive device is fixed on the drive shaft, and a torsion plate is installed on the drive device and connected to the elevator. A fixed seat is installed on the elevator, and a torque sensor is installed between the torsion plate and the fixed seat. With the above structural configuration, if the chain or bucket malfunctions during operation, it will instantly increase the torque on the toothed disc on the fixed drive shaft, causing the toothed disc's running speed to drop instantly. However, the drive device continues to output power, driving the torsion plate to squeeze or pull the torque sensor, thereby transmitting the torque signal. After connecting with an external control device, the drive device can be stopped. This utility model, combined with the sensor on the movable drive shaft, can simultaneously protect the elevator drive system in terms of torque and tension. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the main structure of this utility model;

[0014] Figure 2 This is a three-dimensional structural diagram of the present invention;

[0015] Figure 3 for Figure 2 Enlarged schematic diagram of the structure of region A in the middle;

[0016] Figure 4 for Figure 2 Enlarged schematic diagram of the structure of region B in the middle;

[0017] In the attached image:

[0018] In the diagram: 1. Hoist, 11. Adjustment groove, 12. Horizontal guide chute, 13. Fixed seat, 14. Drive unit, 15. Fixed drive shaft, 16. Drive shaft fixed seat, 17. Positioning seat, 18. Movable drive shaft, 2. Drive shaft end seat, 3. Tension sensor, 4. Adjusting rod, 5. Locking nut, 6. Torque plate, 61. Reinforcing rib, 62. Base, 7. Torque sensor. Detailed Implementation

[0019] The present invention will be described in detail below through specific embodiments. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. However, it should be noted that the specific embodiments described below do not limit the technical solution. Those skilled in the art can make further technical extensions under the guidance of the following technical solutions. The scope of protection of this patent application is determined by the claims.

[0020] Example 1:

[0021] A hoist drive protection system is fixed to, but not limited to, a Z-type hoist or an L-type hoist. It includes a fixed drive shaft 15 and a drive device 14. In this embodiment, the drive device is an integrated module combining a drive motor and a speed change module. Those skilled in the art can also use a hydraulic motor or a servo motor as an equivalent replacement to achieve the same technical effect.

[0022] The fixed drive shaft 15 passes through the drive end of the hoist and is fixed inside the hoist via the drive shaft fixing seat 16. The end of the fixed drive shaft 15 extends out of the hoist 1 and is fixed on the drive device 14. The drive device 14 is provided with a torsion plate 6 connected to the hoist 1. The torsion plate 6 is provided on the periphery of the fixed drive shaft 15 and surrounds the fixed drive shaft 15.

[0023] The hoist 1 is equipped with a fixed base 13, and a torque sensor 7 is disposed between the torque plate 6 and the fixed base 13. When the torque sensor 7 is fixed, as the optimal technical solution, the torque plate 6 extends horizontally to the outside at the end of the drive device 14, and the torque sensor 7 is positioned above the torque plate 6. Alternatively, as an equivalent technical solution, the torque sensor 7 can also be positioned below the torque plate 6. This structure ensures that the torque sensor 7 experiences maximum torque when the equipment malfunctions, enabling rapid force application and triggering of the torque sensor 7.

[0024] The torsion plate 6 is provided with a reinforcing rib 61, and a base 62 is provided above the reinforcing rib 61. The torsion sensor 7 is located between the base 62 and the fixed seat 13. When the protection system is used on the high-power hoist 1, the large torque from the drive device poses a significant impact risk. The above-mentioned reinforcement structure can improve the stability of the upper and lower connection parts of the torsion sensor 7.

[0025] With the above structural settings, the torque detection principle is as follows: the torque value under normal operating conditions is detected and picked up as the torque base value. The torque base value is entered into the external control device and a reaction mechanism is set. For example, when the torque detected by the torque sensor 7 reaches 1.5 to 2 times the torque base value, the external control device obtains the data and controls the drive device 14 to stop in a very short time.

[0026] If the chain or hopper malfunctions during operation, it will instantly increase the torque (resistance) on the geared disc on the fixed drive shaft 15. At this time, the speed of the geared disc will drop instantly, but the drive unit 14 will continue to output power, driving the torque plate 6 to pull the torque sensor 7, thereby realizing the transmission of a large torque signal. After the torque sensor 7 is connected to the external control device, it controls the drive unit 14 to stop, thereby protecting the drive unit 14 and the entire drive system.

[0027] Example 2:

[0028] Based on the structure of Embodiment 1, this utility model also includes a tension sensor control system for the chain, specifically as follows: It includes a movable drive shaft 18, and adjustment grooves 11 and horizontal guide devices are provided on the front and rear side walls of the elevator. In this embodiment, the horizontal guide groove 12 is used as the horizontal guide device, and a drive shaft end seat 2 is provided on the horizontal guide groove 12. A tension sensor 3 is connected to an adjustment rod 4 on the drive shaft end seat 2, and a positioning seat 17 is provided in conjunction with the adjustment rod 4. The adjustment rod 4 is locked to the positioning seat 17 by a locking nut 5. When the equipment is running, if the chain or hopper malfunctions, it will instantly increase the horizontal tension on the movable drive shaft 18. The movable drive shaft 18 pulls the tension sensor 3, thereby transmitting the torque signal. In this embodiment, the tension sensor 3 is connected to an external control device. In actual operation, the torque and tension can assist each other simultaneously, controlling the drive device 14 to stop in case of a conveying failure, thus effectively protecting the drive device 14 and the entire drive system.

[0029] The utility model has a novel and simple structure, is easy to install and convenient to use in the hoist, and is an ideal hoist drive protection system.

Claims

1. A hoist drive protection system, characterized in that: It includes a fixed drive shaft and a drive device. The drive device is fixed on the drive shaft. A torsion plate is provided on the drive device and connected to the hoist. A fixed seat is provided on the hoist. A torsion sensor is provided between the torsion plate and the fixed seat. The torsion sensor is connected to an external control device or drive device.

2. The hoist drive protection system as described in claim 1, characterized in that: The torsion plate is disposed around the fixed drive shaft.

3. The hoist drive protection system as described in claim 1, characterized in that: The torsion plate is provided with a reinforcing rib, and a base is provided above the reinforcing rib. The torsion sensor is located between the base and the fixed seat.

4. The hoist drive protection system as described in claim 1, characterized in that: The torsion plate extends horizontally to the outside, and the torsion sensor is located above or below the torsion plate.

5. The hoist drive protection system as described in claim 1, characterized in that: It includes a movable drive shaft, and the front and rear side walls of the hoist are provided with adjustment grooves and horizontal guide devices. A drive shaft end seat is provided on the horizontal guide device. The drive shaft end seat is connected to an adjustment rod through a sensor, and a positioning seat is provided in cooperation with the adjustment rod. The adjustment rod is fixed on the positioning seat.

Images