CN203445481U - 66kV isolating switch set replacement special spreader - Google Patents

Abstract

The utility model relates to a sling specialized for replacing a whole 66-kilovolt isolating switch set. The sling comprises a support, a suspension arm, a controller, an electric speed reducer, a pulley block and a hook. The suspension arm is arranged on the support. The pulley block is arranged on the suspension arm. One end of the pulley block is connected with the hook while the other end is connected with the electric speed reducer. The electric speed reducer is connected with the controller through a cable. The sling is used for replacing a 66-kilovolt isolating switch during a power-off operation process. The sling can guarantee safe, high-quality and high-efficiency replacement of the 66-kilovolt isolating switch.

Description

66kV isolating switch set replacement special spreader

technical field

The utility model relates to a special lifting tool for whole group replacement of 66kV isolating switches.

Background technique

At present, there are two known methods for replacing 66kV isolating switches. One is to use a crane to hoist the whole group, but the space required is relatively large, which is only suitable for large-scale power outages and new substations. The other is to use manual erection. pole to replace the single-phase isolating switch, but it is necessary to fix the pole with four pull wires on the top of the pole, which is also limited by the power failure range. At the same time, the pole needs to be moved during operation, which is inefficient, time-consuming and laborious, and increases Dangerous points at work. In the actual substation 66kV isolating switch replacement operation, it is basically a single-circuit outage operation, and all adjacent intervals are live. No matter which method is used, there is a great potential safety hazard.

Utility model content

In order to overcome the disadvantages of unfavorable safety and low efficiency of the existing two construction methods, the utility model provides a special spreader for the whole group replacement of 66kV isolating switches. The spreader is easy to install and operate, and has a high safety factor. The replacement of a group of 66kV isolation switches can be completed within two hours, with high work efficiency.

The technical scheme that the utility model solves its technical problem adopts is:

The 66kV isolating switch is replaced with a special spreader, including bracket, boom, controller, electric reducer, pulley block and hook. The boom is installed on the bracket, and the pulley block is installed on the boom. One end of the pulley block is connected with the hook. The other end of the motor is connected to the electric reducer, and the electric reducer is connected to the controller through a cable.

A direction operating rod is arranged at the joint between the support and the boom.

The pulley block is composed of a fixed pulley, a fixed pulley, a movable pulley and a wire rope. One end of the wire rope is fixed on the boom, and the other end of the wire rope is connected to the electric reducer after bypassing the movable pulley, the fixed pulley and the fixed pulley in turn.

The bracket is provided with a switch bracket fixing part, and the switch bracket fixing part is composed of L50 angle steel and 100mm channel steel. The advantages and effects that the utility model has are:

The utility model adopts two 100mm channel steels to make the switch bracket fixing parts, uses galvanized steel pipes with a diameter of two and a half inches to make the brackets, uses galvanized steel pipes with a diameter of 3 inches to make the boom, and uses a three-phase motor to drive a worm gear reducer as a hanger. Power system, the operating part uses a reversible magnetic starter to control the positive and negative rotation of the motor to achieve the lifting and landing operation of the knife switch. The sling uses a steel wire rope with a diameter of 8mm, and the movable pulley is used to reduce the force on the wire rope and improve reliability. , and the overall assembly of the spreader is very convenient, and the assembly time is about 10 minutes. High working efficiency, saving personnel and manpower, reducing the scope of power outages, only the power outage of this circuit is required to meet the working conditions, and the reliability of power supply is improved. It can ensure that the whole set of 66kV isolating switches can be replaced by using this special spreader when the power failure range is small (only the current interval power failure), the live parts are close, and the crane cannot be used, and the assembly and operation are convenient, saving manpower and Time, improve work efficiency, but also ensure the safety of the job site.

Description of drawings

Below in conjunction with accompanying drawing and embodiment the utility model is further described:

Fig. 1 is the overall structural representation of the utility model;

Fig. 2 is a side view of the utility model in use;

Fig. 3 is the front view of the utility model in use state

Fig. 4 is a schematic diagram of the internal wiring of the controller of the present invention.

In the figure: 1. Moving pulley, 2. Fixed pulley, 3. Fixed pulley, 4. Steel wire rope, 5. Electric reducer, 6. Cable, 7. Controller, 8. Operation button, 9. Bracket, 10. Direction operating rod , 11.L50 angle steel, 12.100mm channel steel, 13.66kV isolating switch bracket, 14.66kV isolating switch, 15.M16 bolt, 21. Boom, 701. Air switch, 702. Forward contactor main contact, 703. Reverse Main contact of revolving contactor, 704. Main contact of thermal relay, 708. Coil of forward rotating contactor, 709. Normally open contact of forward rotating contactor, 710. Normally closed contact of reversing contactor, 712. Coil of reversing contactor, 713 .Reverse contactor normally open contact, 714. Forward rotation contactor normally closed contact, 715 thermal relay normally closed contact, 86. Stop button, 87. Lifting button, 88. Falling button.

Detailed ways

Below in conjunction with accompanying drawing, the utility model is described in further detail:

As shown in Figure 1, the utility model 66kV isolating switch whole group replacement special spreader, including bracket 9, boom 21, controller 7, electric reducer 5, pulley block and hook 20, boom 21 is installed on the bracket 9 , the pulley block is installed on the boom, one end of the pulley block is connected with the hook 20, the other end of the pulley block is connected with the electric reducer 5, the electric reducer 5 is connected with the controller 7 through a multi-core cable 6, and the controller 7 is provided with an operation button 8. The operation button 8 is provided with a stop button 86 , a hoist button 87 and a drop button 88 .

A direction operating rod 10 is provided at the joint between the bracket 9 and the boom. Operating rod 10 adopts φ 16 steel core to make, is welded on the bottom of boom 21.

The pulley block is composed of a fixed pulley 3, a fixed pulley 2, a movable pulley 1 and a steel wire rope 4, one end of the steel wire rope 4 is fixed on the boom, and the other end of the steel wire rope 4 bypasses the movable pulley 1, the fixed pulley 2 and the fixed pulley 3 in turn Link to each other with electric speed reducer 5 afterward.

The bracket 9 is provided with a switch bracket fixing piece. The switch bracket fixing part is composed of L50 angle steel 11 and 100mm channel steel 12.

As shown in Figure 2, the utility model is fixed on the support of the 66kV isolating switch by the M16 bolt 15, the four corners of the 66kV isolating switch are fixed with four slings, and the other end of the sling is fixed on the hook 20.

As shown in Figure 4, the controller control process of the present utility model is as follows:

Close the air switch 701, press the lifting button 87 at this time, the coil 708 of the forward rotation contactor is charged at this time, the main contact 702 of the forward rotation contactor and the normally open contact 709 of the forward rotation contactor which acts as self-holding are closed, and the three-phase The AC motor starts to rotate in the positive direction, drives the reducer to rotate in the forward direction, and makes the movable pulley 1 rise; at this time, if you want to stop, you only need to press the stop button 86 in the operation button; if you press the drop button 88, it will reverse The main contact 703 of the contactor and the normally closed contact 713 of the reversing contactor which acts as self-holding are closed, and the three-phase AC motor starts to rotate in the reverse direction, driving the reducer to rotate in the reverse direction, and causing the movable pulley 1 to fall.

As shown in Figure 3, press the lifting button 87 in the operation button. At this time, the whole group of 66kV isolating switches can be lifted to a certain height. Turn the hoisted 66kV isolating switch to the side, press the drop button 88 of the operation button 8 in Figure 1, drop the entire set of 66kV isolating switches to the ground and transport the new 66kV isolating switch to the ground, and do the opposite The new isolator can be seated in the sequence shown. It solves the problem that the 66kV isolating switch cannot be replaced safely and efficiently in a small-scale power outage, and can ensure that the operation is completed safely, efficiently and with high quality.

Claims (4)

The 1.66kV isolating switch whole group replacement special spreader is characterized in that it includes a bracket, a boom, a controller, an electric reducer, a pulley block and a hook, the boom is installed on the bracket, the pulley block is installed on the boom, and one end of the pulley block is connected The hook is connected, and the other end of the pulley block is connected with the electric reducer, and the electric reducer is connected with the controller through a cable. 2. The 66kV isolating switch whole group replacement special spreader according to claim 1, characterized in that a direction operating rod is arranged at the connection between the bracket and the boom. 3. The 66kV isolating switch whole group replacement special spreader according to claim 1, characterized in that the pulley block is composed of a fixed pulley, a fixed pulley, a movable pulley and a wire rope, one end of the wire rope is fixed on the boom, and the wire rope The other end of the motor is connected with the electric reducer after bypassing the movable pulley, the fixed pulley and the fixed pulley in turn. 4. According to claim 1, the 66kV isolating switch group replacement special spreader is characterized in that the switch bracket fixing part is arranged on the bracket, and the switch bracket fixing part is composed of L50 angle steel and 100mm channel steel of.

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