A Portable Electric Inspection Auxiliary Device for 35kv Switchgear

Abstract

The invention relates to an electric power auxiliary device, and particularly to a 35kV switchgear convenient electric checking auxiliary device. The 35kV switchgear convenient electric checking auxiliary device comprises an operating component and a grounding wire operating rod. The operating component comprises a fixed sleeve, a cross-shaped fixing frame and a universal shaft coupling. Two sidesof the fixed sleeve are provided with telescoping devices. The telescoping device comprises driven bevel gears which are arranged at two ends of the cross-shaped fixing frame, a driving bevel gear, ascrew rod and a telescopic rod. One end, which is connected with the driving bevel gear, of the cross-shaped fixing frame is the driving end. The driving bevel gear is internally provided with a through hole. The through hole is internally provided with a rotating shaft. A compression fixing device is arranged between the rotating shaft and the driving end. The compression fixing device comprisesa snapping trough, a snapping clock and a compression spring. The rotating shaft is connected with the grounding wire operating rod through the universal shaft coupling. The 35kV switchgear convenient electric checking auxiliary device has advantages of high stability in operation, simple structure, convenient operation, easy carrying, high practicability, high operation efficiency and wide application range.

Description

technical field [0001] The invention relates to an electric power auxiliary device, in particular to a convenient electric inspection auxiliary device for a 35KV switch cabinet. Background technique [0002] With the rapid and stable development of the power system in recent years, 35KV switchgear has been widely used in substations, power plants, industrial and mining enterprises, and urban construction. Due to the needs of power grid construction and maintenance, its switching operations must be frequent. The structural characteristics of the switchgear itself, the 35kV switchgear adopts indoor layout, the equipment is metal armored cabinet, and the electric inspection operation must be carried out before the equipment is grounded. The traditional electric inspection method of the 35kV switchgear is to use the charged display, electrical and mechanical indication changes The second is to push the electric testing trolley into the switch cabinet, use the push mechanism at t...

AI Technical Summary

Problems solved by technology

One end of the cross-shaped fixing frame is fixed on the inner wall of the fixing sleeve, and telescopic devices are arranged on both sides of the fixing sleeve. The driving bevel gear, which is arranged at the remaining end of the cross-shaped fixed frame and matched with the driven bevel gear, the screw rod connected with the driven bevel gear on both sides, and the telescopic rod threadedly connected with the screw rod, the two driven bevel gears and the cross The two ends of the fixed frame along the axial direction of the fixed sleeve are connected in rotation, the driving bevel gear and the cross-shaped fixing frame are connected in rotation, and the driving bevel gear is connected with two driven bevel gears, that is, the rotation of the driving bevel gear can drive the driven bevel gear. The driving bevel gear rotates at the same time, and the rotation of the driving bevel gear makes the two driven bevel gears rotate in the opposite direction at the same time, so that the screw rod connected with the two driven bevel gears rotates in the opposite direction, and the two telescopic rods are respectively threaded on the On the screw rods on both sides, the inner wall of the telescopic rod is threadedly connected with the outer wall of the screw rod. The rotational motion of the screw rod can be converted into the linear motion of the telescopic rod rod. By controlling the rotation direction of the screw rod, the linear movement direction of the telescopic rod rod can be controlled. The direction of rotation is the same, that is, the rotation of the two screws in the opposite direction can drive the telescopic rods on both sides to move towards each other or reversely. The through hole to the driving end, the cross section of the through hole is a regular polygon, and the through hole is provided with a rotating shaft extending outside the fixed sleeve and matching the shape of the through hole. The rotating shaft can slide in the through hole, because the shape of the rotating shaft and the through hole The shape of the hole matches, that is, the cross-section of the rotating shaft is also a regular polygon, so the driving bevel gear can also be driven to rotate by rotating the rotating shaft. A compression fixing device is arranged between the rotating shaft and the driving end. The card slot on one side, the card block and the compression spring arranged between the rotating shaft and the card slot and matched with the card slot, one end of the compression spring is connected to the bottom surface of the card slot, and the other end of the compression spring is against the bottom surface of the card block, The block is slidingly connected to the inner wall of the driving bevel gear, and the compression spring holds the block against the block and leaves the block in the through hole, and the block can slide in the driving bevel gear, because the cross section of the slot and the cross section of the through hole The shape is the same, and the block can match the slot, so the shape of the block matches the shape of the through hole. When the rotating shaft is turned to make the driving bevel gear rotate, the driving bevel gear drives the block to rotate at the same time, and the rotating shaft is far away from the driving bevel gear. One end of the ground wire is connected to the ground wire operating rod through a universal coupling, the rotating shaft is fixedly connected to the universal coupling, the top of the ground wire operating rod is threaded to the universal coupling, and the universal coupling connects the rotating shaft The wire operation rods are connected together. When operating, the staff must first adjust the telescopic rod to the appropriate width according to the switch cabinets of different specifications. Force, so that the block stays inside the driving bevel gear, and then rotate the grounding wire operating rod, the torque is transmitted through the universal coupling to make the rotating shaft rotate together, the rotation of the rotating shaft drives the driving bevel gear to rotate, and the driving bevel gear will operate the rod shaft along the grounding wire The rotation in the opposite direction is converted into the rotation of the driven bevel gear along the radial direction of the grounding wire operating rod, and at the same time the driven bevel gear drives the screw to rotate, so that the width is adjusted by the opposite or reverse movement of the telescopic rods on both sides. When the width is suitable, the force acting on the rotating shaft toward the driving end overcomes the elastic force of the compression spring so that the block is partially inserted into the slot, and then the block is fixed in the slot so that the rotation of the shaft cannot make the active bevel gear rotate. , finally makes the whole device stable, prevents the two ends of the operating part from resisting the movable arm in the switch cabinet, thereby opening the closed baffle that blocks the contact, the unstable rotation of the grounding wire operation rod causes the movement of the telescopic rod, which increases the Safety and stability; the universal coupling can make the rotating shaft and the grounding wire operating rod not on the same axis, and when there is an angle between the axes, it can realize the continuous rotation of the connected two shafts, and reliably transmit torque and motion, that is The staff can operate the switchgear according to the appropriate angle during actual operation

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