CN201071290Y - Lifting device - Google Patents

Abstract

The utility model discloses a lifting device, in particular a lifting device that can be attached to a ladder, including a frame, a manned platform, a transmission mechanism and a power mechanism, and is characterized in that: the frame of the lifting device and the manned The platform is attached to the ladder column through a positioning running mechanism composed of track wheels. The transmission mechanism of the lifting device is composed of two transmission wheels, two guide wheels and two transmission ropes. The upper end of the transmission rope is fixed on the upper part of the ladder, and the lower end is fixed on the lower part of the ladder. The transmission wheel and the guide wheel are connected through the transmission rope, and The guide wheel is placed above the transmission wheel, and the transmission mechanism is connected with the power mechanism. The utility model not only has a simple structure, saves time and effort, but also increases the safety of operators climbing ladders or performing other high-altitude operations.

Description

a lifting device

technical field

The utility model relates to a lifting device, in particular to a lifting device attached to a ladder, which is mainly used in the installation and maintenance of a wind power generator on a tower.

Background technique

The known climbing ladder in the wind power generator tower is a simple and general-purpose ladder. Crew maintenance personnel need to wear safety belts and climb vertically by their own physical strength. During the climbing process, the use of the fall arrester on the safety belt is cumbersome, especially when going down, the buckle needs to be loosened continuously before going down. With the continuous expansion of the capacity of a single wind turbine, the height of the wind turbine tower has risen from 40 meters in the past to 70 meters or even higher. Due to the increase of the maintenance height, the physical exertion of the operators increases when they climb, their hands and feet slip, they are afraid of heights, and they are easy to fall, which greatly reduces the safety factor and directly endangers the safety of the operators. At the same time, the effective maintenance rate decreases and the cost increases. The original ladder is no longer suitable for the maintenance of large-capacity modern wind turbines. In the high-altitude operations of other relatively similar industries, there are also such problems. In CN2067998, a lifting device that can be lifted and lowered along a vertical column is disclosed, which mainly includes a frame and a manned seat, a rocker and a pedal, a ratchet mechanism, a saddle-shaped driving wheel, a saddle-shaped driven wheel, and a chain drive. , its defect is that the transmission structure is complicated, and it cannot be attached to the ladder for use. In addition, the device uses manpower as power, which has poor safety and is difficult to meet the labor-saving requirements for high-altitude operations.

Contents of the invention

The technical problem to be solved by the utility model is to provide a lifting device that can be attached to a ladder with a simpler structure and more labor-saving.

Another technical problem to be solved by the utility model is to provide a safer lifting device.

The lifting device of the utility model includes a frame, a manned platform, a transmission mechanism and a power mechanism. wheel, two guide wheels and two transmission ropes, the transmission rope can be a steel wire rope or a transmission chain, its upper end is fixed on the upper part of the ladder, and its lower end is fixed on the lower part of the ladder, the transmission wheel and the guide wheel are connected through the transmission rope, and the guide wheel Placed above the transmission wheel; the transmission mechanism is connected with the power mechanism.

The above-mentioned positioning traveling mechanism may be composed of two pairs of track wheels; four pairs of track wheels may also be used.

The lower end of the above-mentioned transmission rope can be connected with the lower part of the ladder through a tensioner.

The above-mentioned power mechanism can be a motor with a worm gear reducer, or a motor with other reducers.

The above-mentioned power mechanism and transmission mechanism are connected through the bearing of the worm gear reducer 1 .

The above-mentioned frame is provided with a safety protection system consisting of a safety handrail, a safety ring, a protective plate or a protective net.

The above-mentioned safety protection system can also be provided with a limit buffer. Seats can be set on the above-mentioned manned platform.

Control buttons can be set on the above-mentioned manned platform or frame.

After adopting such a lifting device, the maintenance personnel of the wind power generator or the same operators in other industries can climb without consuming physical strength, and the working efficiency and personal safety are improved, and the labor intensity is greatly reduced.

Description of drawings

Embodiments of the utility model will be further described below in conjunction with the accompanying drawings.

Fig. 1 is a side view of the first embodiment of the utility model.

Fig. 2 is a side view of the second embodiment of the utility model.

Fig. 3 is the front view of figure of the utility model.

Detailed ways:

Referring to Fig. 1, the frame 11 and the manned platform 13 are attached to the ladder column 8 through a positioning running mechanism composed of track wheels 14; the transmission mechanism is composed of two transmission wheels 3, two guide wheels 4, and two transmission ropes 7 The transmission rope 7 can be a steel wire rope or a transmission chain, its upper end is fixed on the upper part of the ladder, and its lower end is fixed on the lower part of the ladder. The guide wheel 4 and the drive wheel 3 are connected by the drive rope 7, and the guide wheel 4 is placed above the drive wheel 3 The transmission mechanism and the power mechanism are connected through the bearing of the reducer 1, and are driven by the power mechanism to perform a winding up or down movement, and then drive the frame 11 and the manned platform 13 to move up and down along the ladder column 8. The positioning walking mechanism shown in Fig. 1 is made up of two pairs of track wheels 14, and every pair of track wheels 14 is staggered up and down and attached to the front and rear sides of the ladder column 8.

With reference to Fig. 2, the track wheels 14 on the ladder column 8 can also be increased to four pairs, and each pair of track wheels 14 is relatively attached to the front and rear sides of the ladder column 8, and other structures remain unchanged, which is a preferred implementation of the present invention Way.

Referring to Fig. 1 to Fig. 2, the lower end of the above-mentioned driving rope 7 can be connected with the lower part of the ladder through the tensioner 16, and the tension of the wire rope can be adjusted through the tensioner 16. The above-mentioned power mechanism can be a motor 2 with a worm gear reducer 1, or a motor with other reducers.

Referring to Fig. 1 to Fig. 3, safety ring 6, safety handrail 10, protective plate or protective net 12 constitute the safety protection system of the present utility model. In the above-mentioned safety protection system, a limit buffer 15 can also be set, and when the lifting device hits the top or squats to the bottom, it will be protected by the limit buffer 15 . When the system is powered off, the worm gear reducer 1 can also prevent the lifting device from falling. If when one of them breaks in the double transmission rope 7, another also can maintain device to move to the bottom and stop. Seats 5 can also be provided on the manned platform 13, allowing operators to choose two riding modes: standing or sitting down, thereby improving the comfort of the operators.

Referring to Fig. 3, the control button 9 can be set on the manned platform 13 or the frame 11, and when the device is abnormal, the control button 9 can be pressed immediately to allow the device to stop immediately, and the safety button can be disengaged within 2 to 3 seconds. Ring 6, leave the device.

Claims (9)

1. A lifting device, comprising a frame, a manned platform, a transmission mechanism and a power mechanism, characterized in that: the frame of the lifting device and the manned platform are attached to the ladder column by a positioning running mechanism composed of track wheels , the transmission mechanism of the lifting device is composed of two transmission wheels, two guide wheels and two transmission ropes, the upper end of the transmission rope is fixed on the upper part of the ladder, the lower end is fixed on the lower part of the ladder, and the transmission wheel and the guide wheel are connected through the transmission rope. And the guide wheel is placed above the transmission wheel, and the transmission mechanism is connected with the power mechanism. 2. The lifting device according to claim 1, characterized in that the positioning running mechanism is composed of more than two pairs of track wheels. 3. The lifting device according to claim 2, characterized in that the transmission rope is connected to the lower part of the ladder through a tensioner. 4. The lifting device according to claim 2 or 3, characterized in that said power mechanism is a motor with a worm gear reducer. 5. The lifting device according to claim 4, characterized in that the power mechanism and the transmission mechanism are connected through the bearing of the reducer. 6. The lifting device according to claim 5, characterized in that a safety protection system consisting of a safety handrail, a safety ring, a protection plate or a protection net is provided on the frame. 7. The lifting device according to claim 6, characterized in that the safety protection system is provided with a limit buffer. 8. The lifting device according to claim 6 or 7, characterized in that seats are arranged on the manned platform. 9. The lifting device according to claim 8, characterized in that: the manned platform is provided with control buttons.

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