Crane for safety maintenance of elevator

Abstract

The utility model belongs to the technical field of elevator maintenance, and relates to a crane for elevator safety maintenance, which comprises a base, a steering wheel, a winch, a motor and a control box, the top of the base is connected with a steering wheel through a ball sliding groove. The winch is arranged on the steering wheel, winds a cable and is driven by the motor; the control box is arranged on the steering wheel, and the motor is connected with a controller in the box; a fixed pulley is arranged at the top end of the suspension arm; the crane is moved to a proper position of an elevator shaft or other overhaul areas through the universal wheels, and then the stability of the crane is ensured through the balancing weight below the base; the limiting pipe between the winch and the suspension arm can limit swinging of the cable, and safety is ensured; the steering base of the steering wheel allows the direction of the suspension arm to be flexibly adjusted so as to adapt to different maintenance position requirements.

Description

Technical Field

[0001] This utility model belongs to the field of elevator maintenance technology, specifically relating to a crane for elevator safety maintenance. Background Technology

[0002] After an elevator has been in operation for a certain period of time, its various components need to be inspected to ensure safe and stable operation. During inspection, a crane is used to lift the elevator cabin or other components for inspection and maintenance.

[0003] In the existing technology, the space inside the elevator shaft is limited during the operation of the hoisting elevator device, making it difficult to use large hoists for operation. The small hoists that can be used need to be fixed above the elevator shaft during use, making it difficult to move them to the target position when hoisting components. At the same time, the handling work before and after the hoisting work also requires additional manpower. Utility Model Content

[0004] To address the problems existing in the prior art, this utility model provides a crane for elevator safety maintenance.

[0005] To achieve the above technical objectives, the present invention adopts the following technical solution:

[0006] A crane for elevator safety maintenance includes a base, a steering wheel, a winch, a motor, and a control box. A counterweight is located below the base, and the top of the base is connected to the steering wheel via a ball bearing groove. The winch is mounted above the steering wheel via a winch seat, and a cable is wound around the winch. The motor is mounted on one side of the winch, and its power output end is connected to the power input end of the winch. The control box is located above the steering wheel. The steering wheel includes a steering base and a boom. The boom is mounted on the steering base, and a fixed pulley is located at the connection point between the boom tip and the cable.

[0007] Furthermore, the base is equipped with casters at the four corners of its bottom.

[0008] Furthermore, the motor is connected to the controller inside the control box.

[0009] According to the above technical solution, the beneficial effects of this utility model are as follows: This utility model uses casters to move the crane to a suitable position in the elevator shaft or other maintenance area, and then uses the counterweight under the base to ensure the stability of the crane; the limiting tube between the winch and the boom can limit the swing of the cable during the hoisting process, ensuring the safe conduct of the maintenance process; the steering base of the steering wheel allows the boom to flexibly adjust its direction to adapt to different maintenance position requirements and avoid dead zones in the hoisting positions of components. Attached Figure Description

[0010] Figure 1 A schematic diagram of the overall structure of a crane used for elevator safety maintenance;

[0011] 1-Base; 11-Counterweight; 12-Wheel; 2-Steering wheel; 21-Steering base; 22-Boom; 23-Fixed pulley; 3-Windlass; 31-Cable; 32-Limit tube; 4-Motor; 5-Control box. Detailed Implementation

[0012] To more clearly illustrate the technical solution of this utility model, the present utility model will be described in detail below with reference to the accompanying drawings and embodiments.

[0013] See Figure 1 A crane for elevator safety maintenance, characterized in that it includes a base 1, a steering wheel 2, a winch 3, a motor 4, and a control box 5;

[0014] See Figure 1 The base 1 has a counterweight 11 below it. The top of the base 1 is connected to the steering wheel 2 via a ball bearing groove. The winch 3 is mounted above the steering wheel 2 via a winch seat. A cable 31 is wound on the winch 3. A motor 4 is mounted on one side of the winch, and the power output end of the motor 4 is connected to the power input end of the winch 3. The control box 5 is located above the steering wheel 2. The counterweight 11 increases the weight of the base, improves the stability of the crane, and prevents it from tipping over when lifting heavy objects. The ball bearing groove allows the steering wheel 2 to rotate flexibly on the base 1, reducing friction and improving steering sensitivity and reliability. The winch seat fixes the winch 3, ensuring its stable installation and normal operation on the steering wheel 2. The cable 31 connects the boom and the winch, and is used to transmit tension to realize the lifting and lowering of the load. The power of the motor 4 is transmitted to the winch 3, driving the winch 3 to rotate and realize the winding and unwinding of the cable 31. The control box 5 is located above the steering wheel 2, which is convenient for the operator to control the crane near the steering wheel 2, improving the convenience of operation.

[0015] See Figure 1 The steering wheel 2 includes a steering base 21 and a boom 22. The boom 22 is mounted on the steering base 21, and a fixed pulley 23 is provided at the connection point between the top of the boom 22 and the cable 31. The steering base 21 supports the boom 22, enabling it to be stably mounted on the steering wheel 2 and rotate together with the steering wheel 2. The boom 22 is used to suspend heavy objects, and its length and strength must meet the requirements of the lifting weight and working range. The fixed pulley 23 changes the direction of force on the cable, enabling the suspended object to be lifted and lowered vertically, while reducing the friction between the cable and the boom and extending the service life of the cable.

[0016] See Figure 1 The base 1 is equipped with casters 12 at its bottom; the casters 12 enable the crane to move flexibly, facilitating position adjustment and transportation in elevator shafts or other maintenance areas.

[0017] See Figure 1The motor 4 is connected to the controller in the control box 5; the connection between the motor 4 and the controller enables precise control of the motor 4. The controller adjusts the speed and direction of the motor 4, thereby controlling the lifting speed and direction of the crane to meet different maintenance needs.

[0018] According to the above embodiments, the working process of this utility model is as follows:

[0019] Maintenance personnel use the casters 12 to move the crane to a suitable location in the elevator shaft or other maintenance area. Then, they use the counterweight 11 under the base 1 to ensure the stability of the crane. The motor 4 is started by the controller in the control box 5. The power output of the motor drives the winch 3 to rotate, and the cable 31 on the winch is wound up and down accordingly. The cable changes the direction of force through the fixed pulley 23 at the top of the boom 22 to realize the lifting and lowering of the load. The steering base 21 of the steering wheel 2 allows the boom 22 to flexibly adjust its direction to adapt to different maintenance position requirements. After completing the elevator safety maintenance task, the maintenance personnel turn off the motor, retract the cable, and move the crane to the storage area.

[0020] The above-disclosed embodiments of the present invention are only for illustrating the present invention. The preferred embodiments do not describe all details exhaustively, nor do they limit the present invention to the specific implementations described. Many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the present invention, thereby enabling those skilled in the art to better understand and utilize the present invention. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. An elevator safety inspection crane, characterized by: Includes base (1), steering wheel (2), winch (3), motor (4), and control box (5); The base (1) is located below a counterweight (11). The top of the base (1) is connected to the steering wheel (2) via a ball bearing groove. The winch (3) is mounted above the steering wheel (2) via a winch seat. A cable (31) is wound around the winch (3). The motor (4) is mounted on one side of the winch. The power output end of the motor (4) is connected to the power input end of the winch (3). The control box (5) is located above the steering wheel (2). The steering wheel (2) includes a steering base (21) and a boom (22). The boom (22) is mounted on the steering base (21), and a fixed pulley (23) is provided at the connection point between the top of the boom (22) and the cable (31).

2. The elevator safety inspection hoist according to claim 1, characterized in that: The base (1) is equipped with casters (12) at the four corners of its bottom.

3. The elevator safety service hoist of claim 1, wherein: The motor (4) is connected to the controller inside the control box (5).

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