CN2644225Y

CN2644225Y - Mechanical type lifting rod

Info

Publication number: CN2644225Y
Application number: CN 03252852
Authority: CN
Inventors: 刘兴学
Original assignee: Individual
Current assignee: Individual
Priority date: 2003-09-19
Filing date: 2003-09-19
Publication date: 2004-09-29
Anticipated expiration: 2013-09-19

Abstract

The utility model provides a mechanical lift pole, comprising an external stem casing 1 and an internal lift pole 2, which is characterized in that: a fixed pulley 3 is positioned at the outer bottom of the internal lift pole 2; a crown block 4 is arranged near the top of the external stem casing 1; a capstan 5 is arranged below the crown block 4; a wire rope 6 passes over the fixed pulley 3 and the crown block 4, with an end fixed to capstan 5 and the other end fixed to the external stem casing 1, relatively positioned to the crown block 4. The utility model has the advantages of easy lifting, simple structure, light weight as well as convenient installation and operation.

Description

The mechanical ascending and descending bar

One, technical field:

The utility model relates to a kind of jacking system, in particular for the mechanical ascending and descending bar of special vehicle antenna lifting.

Two, background technology:

At present, signaler of the entire PLA and the employed antenna lifter of various special vehicle mainly are 5 meters to 18 meters series, and 18 meters lifting bars mainly contain hydraulic structure and two kinds of forms of spider pagoda structure, these two kinds of antenna lifter structures are all very complicated, huge, one 18 meters to 20 meters lifting bar weight is equivalent to a Dongfeng Automobile, and the type lifting bar has only the lifting structure, descend and then mainly to rely on the top apparatus deadweight and manpower is drop-down carries out, shaft slightly tilts just can cause the difficulty even stuck that descends, cause lifting bar to descend, its manufacturing process, requirement on machining accuracy is all very high, and procedure of repairing is complicated and cost an arm and a leg, and is difficult to promote the use of.

Three, summary of the invention:

The purpose of this utility model provides a kind of energy and realizes light lifting, and simple in structure, lightweight mechanical ascending and descending bar.

The technical solution of the utility model is: a kind of mechanical ascending and descending bar, comprise outer bar cover and interior lifting bar, it is characterized in that: the outer bottom at interior lifting bar is equipped with dead sheave, the bar cover is provided with fixed pulley near the place, top outside, capstan winch is arranged below fixed pulley, steel rope pile warp dead sheave and fixed pulley, an end is fixed on the capstan winch, and the other end is fixed on outer bar and puts the position relative with fixed pulley.

Adopt loop bar version in the utility model, and lifting bar is promoted decline with steel rope and pulley, simple in structure, alleviated weight, use convenient.

In the utility model outside the inner bottom part of bar cover also dead sheave can be installed, and between the dead sheave on the interior lifting bar outer bottom, be fixed with intermediate pulley, bar puts and has the hole outside, and be provided with small sheave at Kong Chu, steel rope pile warp dead sheave and fixed pulley, twine behind the capstan winch pile warp small sheave, dead sheave and intermediate pulley again, head and the tail are fixed on outer bar together and put the position relative with fixed pulley.Therefore the lifting or the decline freely of lifting bar in can realizing by forward or reverse.

The utility model has the advantages that: can realize easily lifting freely, and simple in structure, in light weight, easy to install.

Four, description of drawings:

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

Five, the specific embodiment:

Please see Figure 1: the utility model is made of outer bar cover 1, interior lifting bar 2, dead sheave 3, fixed pulley 4, capstan winch 5, steel rope 6, dead sheave 7, intermediate pulley 8, hole 9, small sheave 10, it is characterized in that: the outer bottom at interior lifting bar 2 is equipped with dead sheave 3, bar cover 1 is provided with fixed pulley 4 near the place, top outside, capstan winch 5 is arranged below fixed pulley 4, steel rope 6 pile warp dead sheaves 3 and fixed pulley 4, one end is fixed on the capstan winch 5, and the other end is fixed on the outer bar cover 1 position relative with fixed pulley 4.

As can be seen from Figure 1: the inner bottom part of bar cover 1 also is equipped with dead sheave 7 outside, and between the dead sheave 3 on interior lifting bar 2 outer bottoms, be fixed with intermediate pulley 8, have hole 9 on the bar cover 1 outside, and in the hole 9 places are provided with small sheave 10, steel rope 6 pile warp dead sheaves 3 and fixed pulley 4, twine behind the capstan winch 5 pile warp small sheave 10, dead sheave 7 and intermediate pulley 8 again, head and the tail are fixed on outer bar together and overlap on 1 the position relative with fixed pulley 4.

Can have many loop bars to be nested together in the utility model, all by the said structure setting, loop bar in outer loop bar promotes is carried on layer by layer between inside and outside two adjacent sleeve pipes, thereby can realize the lifting and the decline of high height.The rotation of capstan winch 5 also can electronicly be controlled in the utility model.

Principle of work: as Fig. 1, when capstan winch 5 rotates counterclockwise, the steel rope 6 of the part that links to each other with fixed pulley 4 twines capstan winch 5, thereby lifting bar 2 rises in driving, since steel rope 6 pile warps the fixing intermediate pulley 8 of interior lifting bar 2 outer bottoms, when interior lifting bar 2 rose, pulling steel rope 6 rose simultaneously, the steel rope 6 of the part that links to each other with small sheave 10 simultaneously lays out capstan winch 5, and the total length of steel rope 6 is constant.During lifting bar 2, only need counter-rotating capstan winch 5 in needs descend, steel rope 6 is antiport again, just can realize the decline freely of interior lifting bar 2.

Claims

1. mechanical ascending and descending bar, comprise outer bar cover (1) and interior lifting bar (2), it is characterized in that: the outer bottom at interior lifting bar (2) is equipped with dead sheave (3), bar cover (1) is provided with fixed pulley (4) near the place, top outside, in the below of fixed pulley (4) capstan winch (5) is arranged, steel rope (6) pile warp dead sheave (3) and fixed pulley (4), an end are fixed on the capstan winch (5), and the other end is fixed on outer bar cover (1) and goes up and the relative position of fixed pulley (4).

2. mechanical ascending and descending bar according to claim 1, it is characterized in that: the inner bottom part of bar cover (1) also is equipped with dead sheave (7) outside, and between the dead sheave (3) on interior lifting bar (2) outer bottom, be fixed with intermediate pulley (8), have hole (9) on the bar cover (1) outside, and in the hole (9) locate to be provided with small sheave (10), steel rope (6) pile warp dead sheave (3) and fixed pulley (4), twine behind the capstan winch (5) pile warp small sheave (10) again, dead sheave (7) and intermediate pulley (8), head and the tail are fixed on outer bar cover (1) together and go up and the relative position of fixed pulley (4).