CN204349335U - Block top skating car - Google Patents

Abstract

The utility model discloses a top pulley block for network sealing, which is a device for erecting electric wires when the network is closed in an electric power system. It includes a base connected to the temporary cross arm and a roller frame connected to the base. The base includes two connecting seats in an inverted U-shaped structure. Bolts are arranged between the two side plates at the opening of the lower part of the connecting seat; the rollers The frame includes support plates on both sides, a base plate connected to the bottom ends of the support plates on both sides, and a roller connected to the middle and upper parts of the support plates on both sides. A roller is arranged on the roll shaft; the two ends of the base plate are respectively fixedly connected to two connecting seats between the top plates. The pulley is provided with rollers, which reduces the friction between the surface of the rollers and the surface of the electric wire, and reduces the abrasion of the electric wire. When the direction of pulling the wire deviates from the direction of the connection between the two cross-arms, the support plates on both sides can limit the wire between the two support plates, so as to ensure that the wire will not slip off the rollers and play a role Anti-shedding effect.

Description

Top wheel tackle for net sealing

technical field

The utility model relates to a device for erecting electric wires, in particular to a top pulley used for erecting electric wires when power lines are sealed.

Background technique

The power system sometimes needs to seal the transmission line when erecting electric wires. When the erected line spans 110kV and above power lines and provincial and above highways, in order not to affect the normal transmission of electricity and the operation of traffic, it is necessary Temporary cross arms are erected on the iron towers on both sides of the railway or power line to support the crossed wires and elevate the cables to prevent the wires from hanging down and affecting the power lines and traffic. The temporary crossarm is temporarily installed on the tower. In the process of erecting the cable, in order to reduce the frictional resistance of the temporary cross arm to the electric wire when pulling the electric wire, it is usually necessary to set up a block on the temporary cross arm. The invention patent CN103199458A discloses a 360° pulley. The pulley is mounted on a U-shaped pulley frame through the pulley shaft, but the pulley frame is flush with the top of the pulley, and the pulley frame does not play the role of restricting the wires to the pulley. During the wire pulling process, the wire is easy to fall off from the pulley and rub against the temporary cross arm, making the pulley useless and useless.

Utility model content

The utility model provides a top pulley block for net sealing, which solves the problem that the electric wire and the cross arm are easily worn when the electric wire is erected.

In order to solve the problems of the technologies described above, the technical solution adopted in the utility model is:

The top wheel tackle for net sealing includes a base connected to the temporary cross arm on the iron tower and a roller frame connected to the base. The base includes two connecting seats in an inverted U-shaped structure, and the two sides of the opening at the lower part of the connecting seat Bolts are arranged between the plates; the roller frame includes support plates on both sides, base plates connected to the bottom ends of the support plates on both sides, and rollers connected to the middle and upper parts of the support plates on both sides, and a roller is arranged on the roller shaft; The two ends are respectively fixedly connected between the top plates of the two connecting seats.

The further improvement of the utility model lies in that: the corner of the connection between the support plate and the base plate is provided with a reinforcing plate forming an acute angle with the support plate and the base plate; the base plate of the roller frame is fixed at the middle position of the top plate of the connecting seat.

The further improvement of the utility model is that: the connection between the roller frame and the roller, the supporting plate and the reinforcing plate, the reinforcing plate and the base plate, and the base plate and the base are all welded.

Owing to having adopted above-mentioned technical scheme, the technical progress that the utility model obtains is:

The pulley of the utility model is provided with rollers. When the erected electric wires pass across the cross arm, the rollers roll along with the dragging of the electric wires, which reduces the friction between the surface of the rollers and the electric wires and reduces the wear on the electric wires.

The rollers of the utility model are arranged on the middle and upper part of the support plate, so that the support plate is higher than the roller by a certain height. It acts as a baffle to limit the wires between the two support plates to ensure that the wires will not slip off the rollers and prevent falling off.

The connecting seat of the utility model has a U-shaped structure, and there are bolts in the bolt holes on the side plates of the connecting seat. When sealing the net, the two connecting seats of the tackle can be used across the cross arm, and the bolts can Play a fixed role to ensure that the pulley will not fall off the cross arm due to the drag of the wire.

The corner between the support plate and the base plate of the utility model is provided with a reinforcement plate, which can support and consolidate the support plate and the base plate. The structure plays a strengthening role.

Description of drawings

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

Fig. 2 is a schematic diagram of the installation structure of the utility model.

Among them: 1. Support plate, 2. Consolidation plate, 3. Base, 4. Roller, 5. Roller shaft, 6. Bolt, 7. Base plate, 8. Connecting seat, 9. Temporary cross arm.

Detailed ways

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

The top wheel block that seals the net, as shown in Figures 1 and 2, comprises the base 3 that is connected on the temporary cross-arm 9 on the iron tower and the roller frame that is connected on the base 3. As shown in Figure 1, two connecting seats 8 in an inverted U-shaped structure jointly form the base 3, and there are two side plates at the opening of the lower part of the connecting seat 8, and bolts for fixing the roller frame are arranged between the two side plates 6. The bolt 6 penetrates through the bolt hole on one side plate of the connection seat 8, and passes out from the bolt hole on the other opposite side plate. The roller frame is composed of three parts: a support plate 1, a base plate 7 and a roller 5; the support plate 1 is located on both sides of the roller frame, and there are two on each side; the base plate 7 is located between the two support plates 1 for Connect the support plates 1 on both sides; the roller shaft 5 is in the middle of the two support plates 1 on the roller frame, and is welded to the middle and upper parts of the support plates 1 on both sides. A roller 4 with a slightly shorter length than the roller 5 is arranged on the roller 5. When using the top pulley, some lubricating oil can be applied between the surface of the roller 4 and the surface of the roller 5 to facilitate the rotation of the roller 4. Since the roller 5 is located on the support plate 1 Therefore, the support plate 1 is higher than the roller 4 by a certain height, so when the wire is pulled, the support plate 1 raised on both sides can play the role of a baffle. The two ends of the base plate 7 are fixedly welded to the middle position of the top plates of the two connection seats 8, so the roller frame is a symmetrical structure with the base plate 7 as the axis. The corners of the support plate 1 and the base plate 7 on both sides are respectively provided with a reinforcement plate 2 welded to form an acute angle with the support plate 1 and the base plate 7, and the consolidation plate 2 forms a right triangle with the support plate 1 and the base plate 7.

The working process of the present utility model is as follows:

As shown in Figure 2, the two connecting seats 8 on the base 3 of the top wheel block are straddled across the cross arm 9, and two bolts 6 are used to pass through the bolt holes on the side plates on the connecting seats 8 respectively, and from the respective The bolt holes on the corresponding side plates pass through, and the nuts are fixed on the bolts 6 and tightened. At this moment, the top wheel block has been firmly fixed on the top of the cross arm 9. Then pass the top of the roller 4 by the traction rope, pull the electric wire in the channel formed by the roller 4 and the support plates 1 on both sides, continue to drag the electric wire, and pass the top wheel tackle on the temporary cross arm 9 on the opposite side of the road by the electric wire, The work of temporarily erecting wires can be completed.

Claims (3)

1. block top skating car, it is characterized in that: comprise the base (3) that is connected with the temporary cross arm (9) on steel tower and be connected to base (3) upper roller frame, described base (3) comprises two Connection Blocks (8) in inverted U-shaped structure, is provided with bolt (6) between the biside plate at Connection Block (8) lower openings place; The supporting bracket (1) that described turning rolls comprises both sides be connected the substrate (7) of supported on both sides plate (1) bottom and be connected to the roller bearing (5) of supported on both sides plate (1) middle and upper part, roller bearing (5) is arranged a roller (4); The two ends of described substrate (7) are fixedly connected between the top board of two Connection Blocks (8) respectively.

2. block according to claim 1 top skating car, is characterized in that: the corner that supporting bracket (1) is connected with substrate (7) is provided with one and consolidates plate (2) with supporting bracket (1) and substrate (2) all in acute angle; The substrate (7) of turning rolls is fixed on the centre position of Connection Block (8) top board.

3. block according to claim 2 top skating car, is characterized in that: described turning rolls is with roller bearing (5), supporting bracket (1) and consolidate plate (2), consolidate plate (2) and substrate (7), connection between substrate (7) with base (3) all adopts and weld.