CN202997469U - Compact line jumper wire expander - Google Patents

Abstract

The utility model discloses a compact line jumper expander, which comprises a spiral bayonet clamp, more than one insulating operating rod, a locking device for fixing the compact line jumper expander, and a spiral bayonet The movable block of the clamp is connected to one end of an insulating operating rod in a movable and detachable manner, and the movement of the movable block is controlled by the insulating operating rod, and more than two insulating rods are connected to each other by a connecting device. The detachable movable sleeve of the locking device is mounted on an insulating rod. The compact line jumper expander of the utility model has the advantages of simple structure and convenient use and maintenance. After the whole set of compact jumper expander is installed, it can effectively spread and fix the jumper, so as to ensure that the operator keeps a safe enough distance from the live jumper and prevents the operator from getting an electric shock.

Description

Compact Line Jumper Spreader

technical field

The utility model relates to a live working tool, in particular to a compact line jumper expander for stretching and effectively fixing a compact tension pole jumper.

Background technique

With the gradual development of electric power construction, in order to save the investment cost of transmission line construction, the current 220kV double-circuit transmission lines erected on the same tower have mostly adopted compact line design, and most of the towers are designed with small tower windows. For vertical arrangement, due to the small distance between the phases and the relative ground, the conventional operation method will not be able to meet the minimum safety distance and combined clearance stipulated in the standards and regulations. Make live work impossible to carry out. Taking the 220SJ11 drum tower as an example, the distance between them is 6.5 meters, and the shortest distance between the upper drainage line and the lower cross arm is 2.2 meters (measured on site). "State Grid Corporation Electricity Safety Work Regulations (Power Line Part)" stipulates general safety technical measures to ensure live work: 8.2.1 (Summary) When carrying out ground potential live work, the safe distance between the person and the live body shall not be less than Table 8- 1 regulation. It is stipulated in Table 8-1 that the minimum safe distance of 220kV between the person and the electrified body shall not be less than 1.8 (1.6) meters when carrying out ground potential live work. It can be seen from this that the maximum operating space left for the operator is only 2.2-1.6=0.6 meters. Assuming the height of the operator is 1.8 meters, according to the ratio of 4:6, the upper body is also 0.72 meters. In addition, the operator's body is normal when operating The range of activities, its 0.6 meters <0.72 meters, can't carry out operation at all.

Utility model content

The purpose of the utility model is to overcome the deficiencies of the prior art, and provide a safe and reliable compact line jumper expander applicable to the above lines.

A compact line jumper expander, including a spiral bayonet clamp, more than one insulating operating rod, a locking device for fixing the compact line jumper expander, and a movable block of the spiral bayonet clamp One end of an insulating operating rod is movable and detachable, and the insulating operating rod controls the movement of the movable block. Two or more insulating rods are connected to each other by a connecting device, and the locking device is detachable. The active suit is on an insulating rod.

For the compact line jumper expander of this structure, firstly, according to the voltage level of the line, it is selected whether to use the number of insulating operating rods, and when the human body and the charged body are kept at a sufficient Hang the wire clip hook on the jumper, and then rotate the insulating operating lever to lock the screw-type bayonet wire clip on the jumper. Prop the insulating operating rod to the direction away from the operator, and another person uses the locking device on the expander to securely fix the insulating operating rod on the cross arm of the iron tower. After installation, the jumper is effectively stretched.

The connection between the two or more insulated operating rods is either connected by threads, or connected by connecting pieces such as bolts and threaded sleeves.

Direct connection by thread can be provided with an external thread on one insulating operating rod, and an internal thread is provided on the other insulating operating rod to realize the connection between the two.

The connection by means of a connector means that either external threads are provided on the adjacent ends of the two insulating operating rods, and internal threads are provided on both ends of the inner cavity of the connector.

The locking device is a sliding sleeve on the insulating operating rod, which is locked or relatively movable on the insulating operating rod through a threaded connection.

With the locking device connected by this structure, the installation of the locking device relative to the insulating operating rod can be flexibly selected according to the needs of use.

The locking device is either a hoop-type locking device, or consists of a fixed block and a movable block, the movable block is connected to the fixed block through a screw rod, and the movable block can move toward or away from the fixed block.

When locking is required, the opening between the movable block and the fixed block is snapped into the cross arm, and the movable block is rotated to move relative to the fixed block until the cross arm is clamped.

In summary, the utility model has the following advantages compared with the prior art:

The compact line jumper expander of the utility model has the advantages of simple structure and convenient use and maintenance. After the whole set of compact jumper expander is installed, it can effectively expand and fix the jumper to ensure that the operator keeps a safe enough distance from the live jumper to prevent the operator from getting an electric shock. the

Description of drawings

Figure 1 is a schematic structural view of a compact line jumper expander according to an embodiment of the present invention.

Explanation of symbols 1 Spiral bayonet clamp 2 Insulated operating rod 3 Connector 4 Locking device.

Detailed ways

Below in conjunction with embodiment the utility model is described in more detail.

Example 1

Referring to accompanying drawing 1, the compact line jumper expander includes a spiral bayonet clamp 1, an epoxy resin insulating operating rod 2, a connector 3, and a locking device 4. The working principle of the compact line jumper expander is: (1) The spiral bayonet clamp is connected and fixed on the epoxy resin insulating operating rod, and the spiral bayonet clamp is tightened by rotating the epoxy resin insulating operating rod Jumper. (2) The epoxy resin insulated operating rod is composed of two, with a connecting piece in the middle, which is used to connect more than two epoxy resin insulated operating rods to control the length of the epoxy resin insulated operating rod. For example, electrical equipment below 110KV uses a single epoxy resin insulated operating rod with a safety distance of more than 1.7 meters, and 220KV electrical equipment uses two epoxy resin insulated operating rods for docking, and the safe distance is more than 3.5 meters. The middle of the epoxy resin insulating operating rod is equipped with a locking device that can flexibly move up and down. The locking device uses threaded connectors to realize locking and moving on the insulating operating rod, and is also composed of a fixed block and a movable block. The movable block is connected to the fixed block through a screw rod, and the movable block can move toward or away from the fixed block to securely fix the epoxy resin insulating operating rod on the cross arm. After the whole set of compact jumper expander is installed, it can effectively expand and fix the jumper to ensure that the operator keeps a safe enough distance from the live jumper to prevent the operator from getting an electric shock. the

The parts not described in this embodiment are the same as the prior art.

Claims (6)

1. compact line wire jumper expander, it is characterized in that: a kind of compact line wire jumper expander, include spiral bayonet socket wire clamp, insulating bar more than one, the locking device that compact line wire jumper expander is fixing, the movable block of spiral bayonet socket wire clamp is movable dismountable motion that is connected and is controlled movable block by insulating bar with an end of thoroughly doing away with the edge action bars, adopt jockey to interconnect between insulating bar more than two, the dismountable movable set of described locking device is on an insulating bar.

2. compact line wire jumper expander according to claim 1 is characterized in that: the connection between described insulating bar more than two or adopt between any two screw thread to connect, or adopt that the thread bush connector is auxiliary to be connected.

3. compact line wire jumper expander according to claim 2 is characterized in that: adopting screw thread directly to connect is on the insulating bar of, external screw thread to be set, and internal thread is set to realize both connections on the insulating bar of another root.

4. compact line wire jumper expander according to claim 2 is characterized in that: it is that abutting end at two insulating bars all arranges external screw thread that described employing connector is connected to, and the two ends of inner chamber all arrange internal thread on connector.

5. according to claim 3 or 4 described compact line wire jumper expanders is characterized in that: described locking device be sliding sleeve on insulating bar, be threaded connection part and realize its locking or relatively be active on insulating bar.

6. compact line wire jumper expander according to claim 5, it is characterized in that: described locking device or for the hood type locking device, or for to be made of a fixed block and movable block, movable block is connected in fixed block by screw mandrel, and movable block fixed block is relatively done in opposite directions or opposing motion.

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