CN201440587U

CN201440587U - Line-releasing pulley

Info

Publication number: CN201440587U
Application number: CN2009201619634U
Authority: CN
Inventors: 郑怀清; 孔耕牛
Original assignee: NANJING CURCUIT APPLIANCE FACTORY; STATE GRID AC ENGINEERING CONSTRUCTION Co Ltd; State Grid Corp of China SGCC
Current assignee: NANJING CURCUIT APPLIANCE FACTORY; STATE GRID AC ENGINEERING CONSTRUCTION Co Ltd; State Grid Corp of China SGCC
Priority date: 2009-07-09
Filing date: 2009-07-09
Publication date: 2010-04-21
Anticipated expiration: 2019-07-09

Abstract

The utility model discloses a line-releasing pulley, which comprises a hanging arm (3), a first frame (4) and a second frame (5), wherein, the first frame (4) comprises a fixing bracket (41) and a rotating bracket (42), the upper end of the rotating bracket (42) is movably connected with the hanging arm (3), and the lower end of the rotating bracket (42) is movably connected with the fixing bracket (41), one side of hanging arm (3) at the movable junction of the second frame (5) and the hanging arm (3) corresponding to the movable junction of the rotating bracket (42) and the hanging arm (3) is provide with a projection part (10); and the second frame (5) is provided with a limiting device, and the limiting device is fixedly connected with the second frame (5), and the limiting device acts on the lower end of the projection part (10) in working state. The line-releasing pulley had simple structure, easy assembling, and saved manpower, and has wide range of engineering application.

Description

A kind of releasing pulley

Technical field

The utility model relates to a kind of power transmission and transformation line construction equipment, particularly a kind of releasing pulley.

Background technology

Releasing pulley is mainly used in spreading conducting wire in the payingoff construction of power transmission and transformation line, and common releasing pulley hangs on the iron tower during unwrapping wire, at first opens up during spreading conducting wire and puts pull rope, needs to have on the tower workman that pull rope is put assembly pulley to releasing pulley.Want pull rope is put assembly pulley to releasing pulley, need the framework of dismounting releasing pulley one side, after pull rope is put into assembly pulley, again releasing pulley is assembled with spreading conducting wire.Because minimum ten meters of releasing pulley ground clearances are high, the weight of general coaster is about 20～300kg, so just needs to use lifting means or tackle pulley to help assemble coaster.In such cases, every coaster need dispose a lifting means or assembly pulley and a workman and assemble coaster, wasted a large amount of time and artificial, and efficient is very low.

The utility model content

The utility model is at above-mentioned the deficiencies in the prior art, and a kind of simple in structure, releasing pulley of being easy to assemble, save manpower is provided.

For solving the problems of the technologies described above, the utility model adopts following technical scheme: a kind of releasing pulley, first framework and second framework that comprise arm and be arranged at the arm both sides respectively are provided with assembly pulley between the fixed mount and second framework, second framework and arm flexibly connect; First framework comprises fixed mount and swivel mount, and the swivel mount upper end flexibly connects with arm, and lower end and fixed mount flexibly connect; Side with respect to swivel mount and arm active connection place has protuberance to arm in second framework and arm active connection place; Second framework is provided with stopping means, and described stopping means is connected with second frame fixation, acts on the lower end of protuberance during described stopping means operating state.

Act on the protuberance of arm during stopping means work, when the moment of torsion that the protuberance of arm produces with respect to second framework and arm active connection place the gravity of its reaction force and first framework, assembly pulley, second framework and stopping means equates, first framework, second framework and assembly pulley are in a kind of poised state, promptly the active connection place of first framework and arm does not stress, thereby can easily the swivel mount of first framework be opened, and the guiding rope is put into assembly pulley.

In preferred embodiment, described stopping means comprises the projection and the screw rod of hollow, and this projection is connected with second frame fixation, and the hollow bulb of this projection is provided with internal thread, and described screw rod is by the screw-internal thread fit of hollow bulb and projection; During rotating screw bolt, screw rod moves upward, its top acts on the protuberance of arm, give active force of protuberance, when the moment of torsion that protuberance produces with respect to second framework and arm active connection place the gravity of its reaction force and first framework, assembly pulley, second framework, projection and screw rod equates, the junction of first framework and arm is stressed to be zero, thereby easily the swivel mount of first framework is opened.During the opposite spin screw rod, screw rod moves downward, with ledge from.

Preferred embodiment be that described stopping means also comprises steel ball, this steel ball is fixed on the top of screw rod, can conveniently use, and saves manpower.

Preferred execution mode is that described stopping means also comprises rotary handle, and rotary handle and screw rod lower end are hinged.

Described projection is preferably nut.

Compared with prior art, releasing pulley described in the utility model can be placed pull rope quickly and easily, and whole process need not dismounting, need not boom hoisting, and simple in structure, is easy to assembling, saves manpower, can save engineering cost greatly, improve operating efficiency.

Description of drawings

Fig. 1 is the front view of the utility model releasing pulley;

Fig. 2 is the left view of releasing pulley shown in Figure 1.

Description of reference numerals:

The 1-latch;

The 2-steel ball;

The 3-arm;

4-first framework;

5-second framework;

The 6-projection;

The 7-screw rod;

8 rotary handles;

The 9-assembly pulley;

The 10-protuberance.

Embodiment

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

As shown in Figure 1, a kind of releasing pulley, comprise arm 3, first framework 4 and second framework 5 are set respectively in the both sides of arm 3, first framework 4 comprises fixed mount 41 and swivel mount 42, and swivel mount 42 tops are connected by latch 1 with arm 3, and lower end and fixed mount 41 flexibly connect by rivet, between the fixed mount 41 and second framework 5 assembly pulley 9 is installed, the side with respect to swivel mount 42 and arm 3 active connection places has protuberance 10 to arm 3 in second framework 5 and arm 3 active connection places; Second framework 5 is provided with stopping means, this stopping means comprises the projection 6 and a screw rod 7 of a hollow, and this projection 6 is fixedlyed connected with second framework 5, is provided with internal thread at the hollow bulb of projection 6, the screw-internal thread fit of described screw rod 7 and projection 6 hollow bulbs, projection 6 also can be a nut.

By rotary screw 7 it is moved upward, its top acts on the protuberance 10 of arm 3, when the moment of torsion that the gravity of its reaction force and first framework 4, assembly pulley 9, second framework 5, projection 6 and screw rod 7 is produced with respect to the active connection place of second framework 5 and arm 3 when protuberance 10 equates, first framework 4, second framework 5 and assembly pulley 9 are in a kind of poised state, promptly first framework 4 does not stress with the active connection place of arm 3, thereby can easily the swivel mount 42 of first framework 4 be opened, and pull rope is put into assembly pulley.

During opposite spin screw rod 7, screw rod 7 moves downward, and separates with protuberance 10, replys initial condition.

In order to save manpower and convenient the use, can also weld a steel ball 2 on the top of screw rod 7, can hinged rotary handle 8 in screw rod 7 lower ends, realize moving up and down of screw rods 7 by rotating rotary handle 8.

The above only is a preferred implementation of the present utility model; should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the utility model principle; can also make some improvements and modifications, these improvements and modifications also should be considered as protection range of the present utility model.

Claims

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.