CN103594946A - Electric operating device of high voltage handcart of electric power high voltage switch cabinet - Google Patents

Abstract

An electric operating device for a high-voltage handcart of an electric high-voltage switchgear, including a mechanical cart and an adjustable support balance frame, the mechanical cart and the adjustable support balance frame are connected by an adjustable screw; the bottom of the mechanical cart is equipped with a pulley and a power supply The adjustable supporting balance frame is provided with a motor, the output shaft of the motor is connected with the rotating shaft transmission rod, and the end of the rotating shaft transmission rod is provided with a replaceable slotted head. The operation method of the present invention is simple and safe, and the operation is convenient and convenient to move, and the speed is uniform when the electric operation handcart switch is performed, which meets the requirements of the switch manufacturer. When centralized overhaul test and new installation and commissioning of multiple high-voltage handcart switches, high-intensity continuous and frequent operations can be performed in a short period of time, with low loss, high economic benefits, safety, and labor-saving operators.

Description

Electric high-voltage switchgear high-voltage handcart electric operating device

technical field

The present invention belongs to the technical field of electric equipment, and in particular relates to an auxiliary device for a high-voltage handcart of an electric high-voltage switchgear.

Background technique

At present, the 3-35kV power high-voltage switchgear in China's power system is mostly assembled with the power high-voltage switchgear to form an AC metal-enclosed switchgear, which is widely used in substations, switching stations, distribution stations and other places in the power system as receiving and It is used for distributing electric energy, switching on and off the load current, especially suitable for places with frequent operations.

This kind of closed metal shell cabinet structure prevents high-voltage live switches, busbars, outgoing cables and other auxiliary live parts from being exposed to the outside air, and can ensure that workers are safely and reliably isolated from live equipment during work and maintain a sufficient safety distance. , can avoid the main body and insulation of live equipment from being affected by various non-safety factors outside, can prolong the service life of high-voltage equipment and insulation in the high-voltage cabinet, and ensure the long-term safe operation of high-voltage equipment in the cabinet.

But when this kind of structure cabinet brings safety to the staff, it also brings inconvenience to the staff in terms of operation.

First of all, we will introduce the operation method of this kind of high-voltage switchgear as follows: When the switch in the high-voltage cabinet is released from standby (pull to the test position) or restored to standby (pushed to the working position), it is necessary to use the handle to operate the handcart switch. The handcart switch from the running position to the release position (test position), generally has a travel distance of about 0.5 meters to 1.5 meters depending on the voltage level or design. The handcart switch is fixed on the track, and when it needs to be pulled to the test position, insert the hand crank into the handle hole of the switch cabinet push (shake out) mechanism, then use the crank to shake the threaded transmission rod, and slowly shake the handcart switch to the test position. The handcart switch is operated by shaking in the opposite direction from the unarmed position (test position) to the running position.

Disadvantages of the above operation method: 1. The handcart switch is very heavy. Generally, the 35kV handcart switch weighs about 500 kg, and the 10kV handcart switch weighs about 200 kg. In operation, manual and mechanical shaking operation is still laborious, especially when operating multiple handcart switches continuously. In the case of fewer operators, it is a test for the physical strength of the operators. At the same time, in this case, it is also necessary It will indirectly affect the safety of the operator's work. At present, there is such a situation of centralized and continuous operation in the substation operation and maintenance operation teams of all power supply companies.

2. The handcart switch and the track will have a certain friction force under the action of gravity. If the high-voltage switch cabinet is not assembled well, the high-voltage handcart switch and the track are not well connected, the friction will be greater, and the operation will be more difficult. It is laborious, and it is not conducive to smooth operation.

3. The track stroke is long, the shaking operation time is long, and the operation time is delayed.

Contents of the invention

The technical problem to be solved by the present invention is to provide an electric operating device for a high-voltage handcart of an electric high-voltage switchgear in view of the deficiencies in the background technology.

In order to solve the above technical problems, the following technical solutions are adopted: a high-voltage handcart electric operating device for electric high-voltage switchgear, including a mechanical cart and an adjustable support balance frame, and the mechanical cart and the adjustable support balance frame are connected by an adjustable screw The bottom of the mechanical trolley is provided with a pulley and a power cord, the adjustable support balance frame is provided with a motor, the output shaft of the motor is connected with the rotating shaft transmission rod, and the end of the rotating shaft transmission rod is provided with a replaceable card slot head.

The rear part of the mechanical cart is provided with a handle, and the handle is provided with a handle and control buttons.

The outside of the motor is provided with a casing, and the casing is provided with ventilation holes.

The front end of the rotating shaft transmission rod protrudes from the adjustable supporting balance frame.

A fixing frame is arranged between the front part of the rotating shaft transmission rod and the adjustable supporting balance frame.

The number of the adjustable screw rods is four, and the four adjustable screw rods are arranged symmetrically.

The motor communicates with the power line.

The operation method of the invention is simple and safe, the operation is convenient and convenient to move, and the speed is uniform when the electric operation handcart switch is performed, which meets the requirements of the switch manufacturer. When centralized overhaul test and new installation and commissioning of multiple high-voltage handcart switches, high-intensity continuous and frequent operations can be performed in a short period of time, with low loss, high economic benefits, safety, and labor-saving operators.

Description of drawings

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

Detailed ways

As shown in FIG. 1 , an electric operating device for a high-voltage handcart of an electric high-voltage switchgear includes a mechanical cart 5 and an adjustable support balance frame 9 . The mechanical trolley 5 and the adjustable supporting balance frame 9 are connected by four symmetrically arranged adjustable screw rods 6 . The bottom of the mechanical cart 5 is provided with a pulley 6 and a power cord 8, and the rear portion of the mechanical cart 5 is provided with a handle 4, and the handle 4 is provided with a handle and a control button 7. The adjustable supporting balance frame 9 is provided with a motor 3, the motor 3 communicates with the power line 8, and the control line of the motor 3 communicates with the control button 7 on the handle. The output shaft of motor 3 links to each other with rotating shaft transmission rod 2, is provided with fixed mount 10 between the front portion of rotating shaft transmission rod 2 and adjustable support balance frame 9, and the front end of rotating shaft transmission rod 2 stretches out adjustable support balance frame 9, and the rotating shaft The front end of the transmission rod 2 is provided with a replaceable slotted head 1 .

A casing can be provided outside the motor, and ventilation holes are arranged on the casing.

The electric operating device of the high-voltage handcart of the electric high-voltage switchgear is equipped with an automatic protection function for the strong resistance of the rotating operation. When the motor rotates to operate the handcart switch, the handcart transmission and moving device in the switch cabinet are stuck due to strong resistance for some reason, and the high-voltage handcart electric operating device of the high-voltage switch cabinet will automatically cut off the power within 1 to 2 seconds. , Stop the rotation operation, and protect the personal safety, motor, transmission and switch cabinet. Manually adjust the stuck situation before proceeding.

Working process: The staff pushes the high-voltage handcart electric operating device of the electric high-voltage switchgear to the front of the switchgear that needs to be operated, and adjusts the height of the rotating shaft drive rod to the height of the handle hole of the push (shake out) mechanism of the switchgear to be consistent, and the direction is aligned , Check whether the card slot head matches the handle hole of the switch cabinet push (shake out) mechanism, if not match, replace the matching card slot head. Then align the handle hole of the switch cabinet push (shake out) mechanism and move horizontally and straightly, and snap the card slot head into the switch cabinet push (shake out) mechanism handle hole. After the card is aligned, press the "shake out" or "shake in" control button on the handle to make the motor rotate in different directions, and determine the operating rotation direction according to the operation purpose of the handcart switch (shake out or in). In an emergency, press the "Stop" button immediately.

The push (shake out) mechanism of the switchgear has the function of tripping in place or the function of locking and limiting the travel in place. When the handcart circuit breaker is shaken in or out to the standby or unstandby position, the transmission device of the switch cabinet will automatically trip, and a continuous slipping sound will be issued to remind the operator to stop the operation, and the operation is in place, or the stroke is in place after the operation is in place. The locking limit function automatically locks the transmission device of the circuit breaker switch cabinet, and the operator stops the operation according to the prompt of the circuit breaker position status indicator. The automatic tripping function of the transmission device of the switch cabinet can prevent excessive mechanical operation from damaging the transmission device of the handcart of the switch cabinet, and ensure that the handcart switch is operated in place.

Claims (7)

1. a power high voltage switch cubicle high-voltage handcart electrically operated device, is characterized in that: comprise mechanical go-cart and adjustable supports balancing stand, between mechanical go-cart and adjustable supports balancing stand, by adjustable screw rod, connect; Machinery go-cart bottom is provided with pulley and power line, and adjustable supports balancing stand is provided with motor, and the output shaft of motor is connected with rotating shaft transmission bar, and the end of rotating shaft transmission bar is provided with card with changeable trough.

2. power high voltage switch cubicle high-voltage handcart electrically operated device according to claim 1, is characterized in that: described mechanical go-cart rear portion is provided with handle, and handle is provided with handle and controls button.

3. power high voltage switch cubicle high-voltage handcart electrically operated device according to claim 1, is characterized in that: described outside motor is provided with shell, and shell is provided with ventilation hole.

4. power high voltage switch cubicle high-voltage handcart electrically operated device according to claim 1, is characterized in that: the front end of described rotating shaft transmission bar stretches out adjustable supports balancing stand.

5. power high voltage switch cubicle high-voltage handcart electrically operated device according to claim 4, is characterized in that: between the front portion of described rotating shaft transmission bar and adjustable supports balancing stand, be provided with fixed mount.

6. power high voltage switch cubicle high-voltage handcart electrically operated device according to claim 1, is characterized in that: the quantity of described adjustable screw rod is 4, between 4 adjustable screw rods, is symmetrical arranged.

7. power high voltage switch cubicle high-voltage handcart electrically operated device according to claim 1, is characterized in that: motor is communicated with power line.

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