CN105460826A - Lifting device for electric power maintenance - Google Patents

Abstract

The invention discloses a lifting device for electric maintenance, which includes a hoisting box, a lifting power device and a lifting device, wherein the lifting device includes a fixed pulley block, a movable pulley block and a stay rope, and the head end of the stay rope is connected to the fixed pulley block , the end is connected with the lifting power device after bypassing the movable pulley block and the fixed pulley block in turn, the top fixing hoop is provided on the fixed pulley block, and a number of slings are arranged on the lifting box, and the top ends of the slings are collected at Together with the movable pulley block, a detachable support plate is provided at the bottom of the hoisting box. The present invention is simple and convenient to use, and solves the defects existing in the hoisting device in the prior art, and greatly improves hoisting device efficiency.

Description

An electric maintenance lifting device

technical field

The invention relates to a hoisting device, in particular to a hoisting device for electric power maintenance.

Background technique

At present, when installing transformers in power systems, cranes are usually used for installation, but they are only used when the construction environment is wide. In narrow construction environments or fields with young crops, the crane cannot approach, which brings great difficulties to the transformer installation work. Difficult, for this reason the notification number is that the utility model patent of CN202988631U discloses a kind of power installation hoisting device, although this device has solved the problem that the construction environment is narrow and small, but still has the following deficiencies in actual use: 1. The transformer is installed between two utility poles, but the rising route of the transformer is also between the two utility poles during hoisting, so the bracket used to support the transformer will hinder the hoisting transformer during hoisting, making the transformer 2. During the lifting process, the lifting rope is directly connected to the transformer. For such a lifting method, it is difficult to find a suitable position on the transformer. To fix the lifting rope, the second is that the length of each lifting rope is difficult to control, which will cause the transformer to be unstable during lifting, and finally cause the transformer to swing during the lifting process. If the swing is too large, it is easy to damage the transformer. 3. When using manual lifting, since there is no braking device on the winch, the worker needs to continue to rotate the rocker. If the worker does not apply external force to the rocker during the hoisting process, the transformer Under the action of gravity, it will drive the winch to rotate in reverse, causing the transformer to fall; 4. Only a single fixed pulley and movable pulley are used for hoisting. If the transformer is too heavy, it is difficult to complete the hoisting manually. Work.

Contents of the invention

The technical task of the present invention is to provide an electric power maintenance lifting device aiming at the above deficiencies in the prior art.

The technical solution adopted by the present invention to solve the technical problem is: a lifting device for electric maintenance, including a lifting box, a lifting power device and a lifting device, wherein the lifting device includes a fixed pulley block, a movable pulley block and a stay rope, and the stay rope The first end of the fixed pulley is connected to the fixed pulley block, and the end is connected to the lifting power device after bypassing the movable pulley block and the fixed pulley block in turn. A top fixing hoop is provided on the fixed pulley block, and the top fixing hoop is installed in it during hoisting. Just on a telegraph pole, a number of slings are arranged on the hoisting box, and the top ends of the slings are brought together to connect with the movable pulley block, so that it is simple and convenient to operate during hoisting, and can not only ensure the stability of the hoisting box Lifting, and it can also protect the transformer to a certain extent. There is a detachable support plate at the bottom of the lifting box. After the transformer is hoisted to the designated position, the support plate can be directly removed from the lifting box. Just drop out directly from the bottom of the hoisting box, so as to complete the whole hoisting work.

The lifting power device includes a chassis and a motor inside the chassis. A bottom fixing hoop is provided outside the chassis. When hoisting, the chassis is fixed on the bottom of the utility pole through the bottom fixing hoop. In the chassis, at least There are two support frames, on which a transmission shaft is arranged, the transmission shaft is connected with the support frame through a bearing, the support frame is used to support the transmission shaft, and the motor is connected with one end of the transmission shaft, A switch for controlling the rotation of the motor is arranged outside the case, and a winding reel is arranged on the transmission shaft, and the end of the stay rope is fixedly connected with the winding reel, and the rotation of the motor drives the winding reel Rotate, thereby pulling the stay rope to drive the hoisting box to rise.

The other end of the transmission shaft is provided with a shaft disk, and a hand rocker is provided outside the shaft disk, and a brake mechanism is provided on the transmission shaft. When lifting manually, by shaking the hand rocker To drive the shaft disk to rotate, and then drive the winding disk to rotate through the transmission shaft. When the worker needs to leave during the lifting process, the transmission shaft can be locked by the brake mechanism to prevent the reverse rotation of the transmission shaft from causing the transformer to fall. Case.

The brake mechanism is a disc brake system, a disc is provided on the transmission shaft, a caliper is provided on the chassis above the disc, and a screw for controlling the opening and closing of the caliper is provided outside the chassis. button.

A socket is provided on one side outside the lifting box, and a support chute is provided in the lifting box at the same level as the socket. After the support plate is inserted into the socket, it connects with the lifting box Pull-type connection, there are several rollers on the support plate, and the front end of the support plate has a slope structure. After the transformer is hoisted to the designated position, the support plate can be directly pulled out from the bottom of the hoisting box. When the support plate is pulled, the friction between the support plate and the transformer is reduced because the support plate is provided with rollers.

In order to prevent the support plate from slipping out of the hoisting box, a positioning pin is provided above the socket, and a positioning hole that can cooperate with the positioning pin is provided at the end of the support plate, and the positioning pin is inserted into the positioning hole when hoisting In this way, the support plate can be positioned.

A sliding hoop is provided on one side of the lifting box, and a number of balls are arranged inside the sliding hoop. When lifting, the sliding hoop is stuck outside the utility pole, so that the lifting box is well avoided from swinging during the hoisting process. Condition.

Advantages of the present invention: 1. It is only necessary to install the top fixing hoop on the top of one of the utility poles during hoisting, so that the transformer can be hoisted from the outside of the utility pole during hoisting, thereby avoiding the obstruction of the transformer bracket, The transformer can pass over the transformer support smoothly, which reduces the difficulty of workers' work; 2. Because there are slings on the hoisting box and sliding hoops on the outside, this not only can lift the transformer smoothly, but also avoids the need for the transformer to be lifted during the hoisting process. If there is a swing in the middle, this not only improves the work efficiency of hoisting, but also increases the protection of the transformer during hoisting; 3. Because there is a braking device on the transmission shaft, during the hoisting of the transformer, it can be passed The brake device is used to limit the rotation of the transmission shaft, thus avoiding the transformer falling in mid-air; 4. The whole lifting device adopts fixed pulley block and movable pulley block, so that the pull rope can be selected according to the actual weight of the transformer during hoisting Appropriate number of winding turns, thereby reducing the force required for manual lifting.

Description of drawings

Fig. 1 is a schematic diagram of the structure of the present invention.

Fig. 2 is a schematic diagram of the internal structure of the chassis of the present invention.

Fig. 3 is a schematic diagram of the connection between the hoisting box and the support plate of the present invention.

Fig. 4 is a schematic diagram of the internal structure of Fig. 3 of the present invention.

Fig. 5 is a top view of Fig. 3 of the present invention.

detailed description

The present invention will be described in detail below in conjunction with the accompanying drawings.

As shown in the figure, a lifting device for electric maintenance includes a hoisting box 4, a lifting power device and a lifting device, wherein the lifting device includes a fixed pulley block 8, a movable pulley block 7 and a stay rope 10, and the head end of the stay rope 10 is It is connected with the fixed pulley block 8, and the end is connected with the lifting power device after bypassing the movable pulley block 7 and the fixed pulley block 8 in turn. A top fixing hoop 9 is provided on the fixed pulley block 8, and the top fixing hoop 9 is fixed on the fixed pulley block 8 during hoisting. It can be installed on one of the utility poles, and several suspension ropes 6 are arranged on the lifting box 4, and the top ends of the suspension ropes 6 are gathered together to be connected with the movable pulley block 7, so that the operation is simple and convenient during hoisting. Not only can it ensure the smooth lifting of the hoisting box 4, but it can also protect the transformer to a certain extent. A detachable support plate 5 is provided at the bottom of the hoisting box 4. After the transformer is hoisted to the designated position, the support plate can be directly lifted 5. It can be disassembled from the hoisting box 4, so that the transformer can directly fall out from the bottom of the hoisting box 4, thereby completing the whole hoisting work.

The lifting power device includes a chassis 1, and a motor 12 located in the chassis 1, a bottom fixing hoop 2 is arranged outside the chassis 1, and the chassis 1 is fixed on the bottom of the utility pole by the bottom fixing hoop 2 during hoisting. At least two support frames 171 are arranged in the cabinet 1, and a transmission shaft 17 is arranged on the support frame 171. The transmission shaft 17 is connected with the support frame 171 through a bearing 172, and the support frame 171 is used for supporting Transmission shaft 17, the motor 12 is connected to one end of the transmission shaft 17, a switch for controlling the rotation of the motor 12 is arranged outside the casing 1, and a winding disc 11 is provided on the transmission shaft 17, The end of the stay rope 10 is fixedly connected to the winding reel 11, and the rotation of the motor 12 drives the winding reel 11 to rotate, thereby pulling the stay rope 10 to drive the hoisting box 4 to rise.

The other end of the transmission shaft 17 is provided with a shaft disc 18, and a hand rocker 19 is provided outside the shaft disc 18, and a braking mechanism is provided on the transmission shaft 17. When lifting in a manual manner, Drive the shaft disc 18 to rotate by shaking the hand rocker 19, and then drive the winding disc 11 to rotate through the transmission shaft 17. When the worker needs to leave during the lifting process, the transmission shaft 17 can be locked by the braking mechanism to prevent The reverse rotation of the propeller shaft 17 makes the case where the transformer falls.

The brake mechanism is a disc brake system, a disc 16 is provided on the transmission shaft 17, a caliper 15 is provided on the chassis 1 above the disc 16, and a utility and control station is provided outside the chassis 1. Said caliper 15 opens and closes the screw button 13, and the screw button 13 is connected with the caliper 15 by a steel wire rope 14.

One side outside the lifting box 4 is provided with a socket, and a support chute is provided in the lifting box 4 at the same horizontal position as the socket, and the support plate 5 is inserted into the socket through the support chute and the socket. The above-mentioned hoisting box pull-type connection, a number of rollers 51 are provided on the support plate 5, the front end of the support plate 5 is a slope structure, after the transformer is hoisted to the designated position, the support plate 5 is directly lifted from the hoisting box 4 The bottom can be pulled out. When pulling the support plate 5, because the support plate is provided with a roller 51, thereby reducing the friction between the support plate 5 and the transformer, and because the front end of the support plate 5 is in the shape of a slope, The height of the transformer can be lowered slowly, and finally it falls onto the support smoothly.

In order to prevent the support plate 5 from slipping out of the hoisting box 4, a positioning pin 40 is provided above the socket, and a positioning hole 52 that can cooperate with the positioning pin 40 is provided at the end of the support plate 5. When hoisting The positioning pin 40 is inserted into the positioning hole 52, so that the support plate 5 can be positioned.

One side of the hoisting box 4 is provided with a sliding hoop 3, and a number of balls 31 are arranged in the said sliding hoop 3. When hoisting, the sliding hoop 3 is stuck outside the utility pole, so that it is well avoided during the hoisting process. The situation that hoisting box 4 swings has been solved.

Its working principle is: firstly fix the head end of the stay rope 10 on the fixed pulley block 8 before hoisting, then pass the end of the stay rope 10 over the movable pulley block 8 and the fixed pulley block 7 in turn, and finally fix the end of the stay rope 10 on the fixed pulley block 8. On the winding reel 11, when the stay rope 10 passes over the fixed pulley block 8 and the movable pulley block 7, the appropriate number of winding turns can be selected according to the weight of the transformer, thus reducing the strength required for manual lifting, and then fixed by the top The hoop 9 fixes the fixed pulley block 8 on the top of the utility pole, and the bottom fixing hoop 2 fixes the cabinet 1 on the bottom of the utility pole. When hoisting, first hang the sling 6 on the hoisting box 4 to the movable pulley block 7, and then Attach the primary sliding hoop 3 of the hoisting box 4 to the utility pole, so that the hoisting box 4 can move upwards along the utility pole during hoisting, which can well avoid the swing of the hoisting box 4. When the transformer is hoisted to the designated position Finally, after the hoisting box 4 is placed on the support between the utility poles, the positioning pin inserted in the positioning hole 52 is taken out earlier, and then the handle 53 on the support plate 5 is held to slowly pull the support plate 5, at this time Because the support plate 5 is provided with a roller 51, the frictional force between the transformer and the support plate 5 is very small. After the support plate 5 is pulled out, the transformer will completely fall on the support, and finally the hoisting box 4 Just hang it away. During the whole hoisting process, if you need to stop the hoisting work halfway, you can turn the screw button 13 and then pull the wire rope 14 to control the closing of the caliper 15. When the caliper 15 is closed, the caliper 15 will also close the disc. 16 is firmly fixed, so that the disc 16 can no longer rotate, and then plays a role in restricting the rotation of the transmission shaft 17, so that even if the transformer is hung in mid-air, it will not fall. When it is necessary to continue lifting, turn the screw knob 13 Reversed so that the caliper 15 is unclamped from the disc 16, so that the lifting work can continue.

Claims (7)

1. an electric power overhaul lifting appliance, comprise lifting case, lifting power plant and jacking system, it is characterized in that: described jacking system comprises fixed pulley group, running block and stay cord, the head end of described stay cord is connected with described fixed pulley group, end is walked around running block successively and is connected with described lifting power plant with after fixed pulley group, described fixed pulley group is provided with top clips, described lifting case is provided with some lifting ropes, described lifting rope top pools together and is connected with described running block, bottom described lifting case, be provided with detouchable stay bearing plate.

2. electric power overhaul lifting appliance according to claim 1, it is characterized in that: described lifting power plant comprises cabinet, and be positioned at the motor of cabinet, bottom clips is provided with outside described cabinet, two bracing frames are at least provided with in described cabinet, support frame as described above is provided with transmission shaft, described transmission shaft is connected with support frame as described above by bearing, described motor is connected with one end of described transmission shaft, the switch for controlling described electric machine rotation is had at described cabinet peripheral hardware, described transmission shaft is provided with wire spool, the end of described stay cord is fixedly connected with described wire spool.

3. electric power overhaul lifting appliance according to claim 2, is characterized in that: be provided with reel at the other end of described transmission shaft, outside described reel, is provided with joystick, described transmission shaft is provided with stop mechanism.

4. electric power overhaul lifting appliance according to claim 3, it is characterized in that: described stop mechanism is disc brake system, described transmission shaft is provided with disc, the cabinet above described disc is provided with clamp, the useful spiral button with controlling described clamp opening and closing at described cabinet peripheral hardware.

5. electric power overhaul lifting appliance according to claim 1, it is characterized in that: the side outside described lifting case is provided with socket, with the lifting case of described socket same level position in be provided with support chute, be connected with described lifting case drawing and pulling type by supporting chute after described stay bearing plate inserts described socket, described stay bearing plate is provided with some roller bearings, and the front end of described stay bearing plate is ramp structure.

6. electric power overhaul lifting appliance according to claim 5, is characterized in that: above described socket, be provided with locating dowel pin, described stay bearing plate end be provided with can with the knock hole of described detent fit.

7. according to the electric power overhaul lifting appliance of claim 1-6 wherein described in any one, it is characterized in that: be provided with the hoop that slides in the side of described lifting case, in described slip hoop, be provided with some balls.