CN201440587U - a pay-off tackle - Google Patents

Abstract

The utility model discloses a pay-off block, which comprises a boom (3), a first frame (4) and a second frame (5), the first frame (4) comprises a fixed frame (41) and a rotating frame (42), The upper end of the swivel frame (42) is movably connected with the boom (3), and the lower end is movably connected with the fixed frame (41). (42) There is a protruding part (10) on one side of the movable connection with the boom (3); a limiting device is arranged on the second frame (5), and the limiting device is fixedly connected with the second frame (5), The limiting device acts on the lower end of the protruding part (10) in working state. The pay-off block of the utility model is simple in structure, easy to assemble, saves manpower, and has wide engineering application prospects.

Description

a pay-off tackle

technical field

The utility model relates to a construction tool for power transmission and transformation lines, in particular to a wire-releasing block.

Background technique

The pay-off tackle is mainly used for laying out wires during the pay-out construction of power transmission and transformation lines. Usually, the pay-off tackle is hung on the iron tower when laying out the wires. Put the traction rope to the pulley block of the pay-off block. To put the traction rope on the pulley block of the pay-off tackle, it is necessary to disassemble the frame on one side of the pay-off tackle, put the traction rope into the pulley block, and then assemble the pay-off tackle to spread out the wire. Since the pay-off block is at least ten meters high from the ground, the weight of the general block is about 20-300kg, so it is necessary to use lifting equipment or blocks to help assemble the block. In this case, each block needs to be equipped with a lifting device or pulley block and a worker to assemble the block, which wastes a lot of time and labor, and the efficiency is very low.

Utility model content

The utility model aims at the deficiencies of the above-mentioned prior art, and provides a pay-off tackle with simple structure, easy assembly and labor-saving.

In order to solve the above-mentioned technical problems, the utility model adopts the following technical scheme: a pay-off block, including a boom and a first frame and a second frame respectively arranged on both sides of the boom, and a set between the fixed frame and the second frame There are pulley blocks, the second frame is movably connected with the boom; the first frame includes a fixed frame and a swivel frame, the upper end of the swivel frame is movably connected with the boom, and the lower end is movably connected with the fixed frame; the boom is at the movable connection between the second frame and the boom There is a protrusion on one side of the flexible connection between the rotating frame and the boom; a limiting device is arranged on the second frame, and the limiting device is fixedly connected with the second frame. lower end of the section.

When the limit device works, it acts on the protruding part of the boom. The reaction force of the protruding part of the boom and the gravity of the first frame, the pulley block, the second frame and the limit device are relative to the movable connection between the second frame and the boom. When the generated torques are equal, the first frame, the second frame and the pulley block are in a balanced state, that is, there is no force at the movable connection between the first frame and the boom, so that the swivel frame of the first frame can be easily opened, and Put the guide rope into the block of pulleys.

In a preferred embodiment, the limiting device includes a hollow protrusion and a screw rod, the protrusion is fixedly connected to the second frame, and the hollow part of the protrusion is provided with an internal thread, and the screw rod passes through the hollow part and The internal thread of the bump is matched; when the screw is turned, the screw moves upward, and its top acts on the protrusion of the boom, giving a force to the protrusion, and the reaction force of the protrusion is the same as that of the first frame, the pulley block, and the second frame. 1. When the gravity of the bump and the screw rod is equal to the torque generated at the flexible connection between the second frame and the boom, the force on the connection between the first frame and the boom is zero, thereby easily opening the swivel frame of the first frame. When the screw is rotated in the opposite direction, the screw moves down and separates from the protrusion.

A preferred embodiment is that the limiting device further includes a steel ball, which is fixed on the top of the screw, which is convenient to use and saves manpower.

A more preferred embodiment is that the limiting device further includes a rotary handle, and the rotary handle is hinged to the lower end of the screw rod.

The said bump is preferably a nut.

Compared with the prior art, the pay-off block of the utility model can conveniently and quickly place the traction rope, the whole process does not need to be disassembled, no lifting device is needed, and the structure is simple, easy to assemble, saves manpower, can greatly save engineering costs, improve operation efficiency.

Description of drawings

Fig. 1 is the front view of the utility model pay-off tackle;

Fig. 2 is a left side view of the pay-off tackle shown in Fig. 1 .

Explanation of reference signs:

1 - latch;

2-steel ball;

3 - Boom;

4 - first frame;

5 - second frame;

6-bump;

7-screw;

8 rotating handles;

9- pulley block;

10 - Protrusion.

Detailed ways

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

As shown in Fig. 1, a kind of pay-off tackle comprises a boom 3, a first frame 4 and a second frame 5 are respectively arranged on both sides of the boom 3, and the first frame 4 includes a fixed mount 41 and a swivel mount 42, which rotate The top of the frame 42 is connected with the boom 3 through the bolt 1, and the lower end is movably connected with the fixed frame 41 through a rivet. A pulley block 9 is installed between the fixed frame 41 and the second frame 5, and the boom 3 is connected between the second frame 5 and the boom 3. There is a protruding part 10 at the movable connection relative to the side of the movable connection between the swivel frame 42 and the boom 3; a limiting device is arranged on the second frame 5, and the limiting device includes a hollow projection 6 and a screw rod 7, The bump 6 is fixedly connected with the second frame 5, and the hollow part of the bump 6 is provided with an internal thread, and the screw 7 is matched with the internal thread of the hollow part of the bump 6, and the bump 6 can also be a nut.

By rotating the screw rod 7 to move upwards, its top end acts on the protrusion 10 of the boom 3, when the reaction force of the protrusion 10 to it is combined with the first frame 4, the pulley block 9, the second frame 5, the bump 6 and the screw rod When the gravity of 7 is equal to the torque generated at the joint between the second frame 5 and the boom 3, the first frame 4, the second frame 5 and the pulley block 9 are in a balanced state, that is, the first frame 4 and the boom 3 There is no stress at the movable connection of the first frame 4, so that the swivel frame 42 of the first frame 4 can be easily opened, and the traction rope is put into the block of pulleys.

When the screw 7 is rotated in the opposite direction, the screw 7 moves downward, separates from the protrusion 10, and returns to the initial state.

In order to save manpower and facilitate use, a steel ball 2 can also be welded on the top of the screw rod 7, and a rotary handle 8 can be hinged at the lower end of the screw rod 7, and the up and down movement of the screw rod 7 can be realized by rotating the rotary handle 8.

The above is only a preferred embodiment of the utility model, it should be pointed out that for those of ordinary skill in the art, without departing from the principle of the utility model, some improvements and modifications can also be made, these improvements and Retouching should also be regarded as the scope of protection of the present utility model.

Claims (6)

1. releasing pulley, first framework (4) and second framework (5) that comprise arm (3) and be arranged at arm (3) both sides respectively, be provided with assembly pulley (9) between first framework (4) and second framework (5), second framework (5) flexibly connects with arm (3), it is characterized in that, first framework (4) comprises fixed mount (41) and swivel mount (42), and swivel mount (42) upper end flexibly connects with arm (3), and lower end and fixed mount (41) flexibly connect; Side with respect to swivel mount (42) and its active connection place has protuberance (10) to arm (3) in second framework (5) and its active connection place; Described second framework (5) is provided with stopping means, and described stopping means is fixedlyed connected with second framework (5), acts on the lower end of protuberance (10) during described stopping means operating state.

2. releasing pulley according to claim 1, it is characterized in that described stopping means comprises the projection (6) and the screw rod (7) of hollow, this projection (6) is fixedlyed connected with second framework (5), the hollow bulb of this projection (6) is provided with internal thread, and described screw rod (7) is by the screw-internal thread fit of hollow bulb and projection (6).

3. releasing pulley according to claim 2 is characterized in that, also comprises the steel ball (2) that is fixed on screw rod (7) top.

4. according to claim 2 or 3 described releasing pulleys, it is characterized in that, also comprise and the hinged rotary handle (8) in screw rod (7) lower end.

5. according to claim 2 or 3 described releasing pulleys, it is characterized in that described projection (6) is a nut.

6. releasing pulley according to claim 4 is characterized in that, described projection (6) is a nut.

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