CN201567175U

CN201567175U - Heavy type wrecker rope pressing mechanism

Info

Publication number: CN201567175U
Application number: CN2009203173384U
Authority: CN
Inventors: 严志强; 彭玲
Original assignee: HUNAN ZOOMLION HEAVY INDUSTRY SPECIAL VEHICLE Co Ltd
Current assignee: HUNAN ZOOMLION HEAVY INDUSTRY SPECIAL VEHICLE Co Ltd
Priority date: 2009-12-14
Filing date: 2009-12-14
Publication date: 2010-09-01
Anticipated expiration: 2019-12-14

Abstract

The utility model discloses a heavy type wrecker rope pressing mechanism, comprising a rolling wheel (2), a press rack (6) and a brake chamber (9); the press rack (6) is fixed on a steel pipe (11) respectively by one end of a first link rod (10) and a second link rod (12); the steel pipe (11) of the press rack (6) is hinged on a holder (5); the rolling wheel (2) is installed on the other end of the second link rod (12) through a first shaft (3) and a rolling bearing (4); the other end of the first link rod (10) is hinged with a piston rod of the brake chamber (9); and the brake chamber (9) is communicated with a chassis auxiliary air reservoir through a throttle valve and a control valve. The heavy type wrecker rope pressing mechanism has reasonable bearing, compact structure, low cost, simple structure and reliable performance.

Description

Heavy wrecker is pressed rope mechanism

Technical field

The utility model relates to a kind of pressure rope mechanism, particularly relates to a kind of hold-down mechanism of hoisting drum steel rope of heavy wrecker.

Background technology

Present domestic pressure rope mechanism generally adopts extension spring to compress mode, and extension spring compresses mode, and generally to be used for hoisting crane feasible, but use not ideal on wrecker, its reason is that wrecker is when lifting operation, operating personal will be drawn suspension hook, and extension spring pressure is excessive, and the people drags motionless; Extension spring pressure is little, cannot keeps under control steel rope, so be difficult to grasp extension spring pressure size.Thereby cause steel rope dislocation under mode of operation, loose, disorder cable etc.The prior art constructions scheme drawing is seen Fig. 1, comprises roller 2, presses frame 6 and extension spring 16.

Mainly there is following deficiency in this pressure rope mechanism:

1) dislocation, loose, disorder cable appear in the steel rope on the capstan winch, and it is in disorder that integral body seems;

2) steel rope is misaligned, and artificial stay cord is gruelling;

3) because disorder cable causes steel rope to be crushed easily, fracture of wire, and then the life-span of shortening steel rope.

The utility model content

Technical problem to be solved in the utility model provide a kind of stressed rationally, compact conformation, heavy wrecker with low cost press rope mechanism.

In order to address the above problem, the heavy wrecker that the utility model provides is pressed rope mechanism, comprise roller and press frame, wherein pressing frame to be separately fixed on the steel pipe by an end of first connecting rod and second connecting rod forms, the steel pipe of described pressure frame is hinged on the support with pin by second, described roller is installed in the other end of described second connecting rod by primary shaft and antifriction-bearing box, the other end of described first connecting rod and the piston rod of compressed air brake cylinder are hinged, and described compressed air brake cylinder is communicated with the auxiliary air receiver in chassis by flow regulating valve and control cock.

Adopt the heavy wrecker of technique scheme to press rope mechanism, steel rope is received when restricting, and to thrust that makes progress of piston rod, piston rod drives the first connecting rod of pressing frame and and then makes progress the source of the gas that auxiliary air receiver provides from the chassis in compressed air brake cylinder; And simultaneously, press the second connecting rod of the other end of frame to rotate the downward power that produces around bearing pin, and drive roller to be pressed on the steel rope, make steel rope not loose in the process of wiring.And roller can rotate around the axle oneself, and has guide function, and steel rope is arranged in the process of wiring in order.

Put when rope when needs, flow regulating valve is opened, the gas of compressed air brake cylinder flows out, and air pressure reduces, and roller gives the pressure of steel rope very little even be zero, steel rope can be pulled out smoothly by the mode of artificial stay cord.

Compared with prior art, advantage of the present utility model is:

1) this rope press device has guide function, makes steel rope put rope and receive in the process of restricting and arrange in order, not disorder cable;

2) by this rope press device, make steel rope can not be in impaction state under the mode of operation, guarantee that steel rope is smooth, not loose;

3) because steel rope is not easy to be crushed, fracture of wire, prolonged the service life of steel rope;

4) reduce the pulling force of workman's stay cord, improved work efficiency;

5) this mechanism structure is simple, makes simple, easy to operate, cheap.

In sum, the utility model be a kind of stressed rationally, compact conformation, heavy wrecker with low cost and simple in structure, dependable performance press rope mechanism.

Description of drawings

Fig. 1 is the prior art constructions scheme drawing;

Fig. 2 is a texture edge view of the present utility model;

Fig. 3 is a structure front view of the present utility model;

Fig. 4 is the structural representation of pressing frame;

Fig. 5 is a schematic diagram of gas circuit.

The specific embodiment

The utility model is described in further detail below in conjunction with the drawings and specific embodiments.

Referring to Fig. 2, Fig. 3 and Fig. 4, pressing frame 6 to be separately fixed on the steel pipe 11 by an end of first connecting rod 10 and second connecting rod 12 forms, the steel pipe 11 of pressing frame 6 is hinged on the support 5 by second 7 and pin 8, roller 2 is installed in the other end of second connecting rod 12 by primary shaft 3, nut 1 and antifriction-bearing box 4, the piston rod of the other end of first connecting rod 10 and compressed air brake cylinder 9 is hinged, and compressed air brake cylinder 9 is communicated with the auxiliary air receiver 15 in chassis by flow regulating valve 13 and control cock 14.

Referring to Fig. 2, Fig. 3 and Fig. 4, press the center of frame 6 to be located on the support 5, and can be around axle 7 rotations of support 5; The in succession piston rod of compressed air brake cylinder 9 of one end, the other end roller 2 of ining succession; Roller 2 can be the oneself by primary shaft 3 hearts and rotatablely move, and has guide function, and steel rope 17 is arranged automatically in order; Provide source of the gas by the auxiliary air receiver 15 in chassis, gas enters take offence piston rod in the chamber 9 of compressed air brake cylinder 9 and pushing through control cock 14, piston rod drives first connecting rod 10 upward movements of pressing frame 6, according to lever principle, press the second connecting rod 12 of frame 6 to drive 2 one downward power of roller, roller 2 tightly is pressed on the steel rope 17, makes steel rope 17 not loose, disorderly.A flow regulating valve 13 is installed on the pipeline that enters compressed air brake cylinder 9, and as Fig. 3, the size by flow regulating valve 13 is regulated air pressure reaches the effect of regulating roller 2 pressure sizes; The diameter difference of steel rope 17, tension force varies in size, and along with the diameter of steel rope 17 winding reels increases, tension force increases; The tension force of steel rope 17 is during greater than roller 2 pressure, and steel rope 17 can increase one deck automatically.

Referring to Fig. 2, Fig. 3 and Fig. 4, the concrete operations mode:

Put steel rope 17--and open flow regulating valve 13, the gas in the compressed air brake cylinder 9 is emitted, make roller 2 not provide pressure steel rope 17; Simultaneously, open the barrel of captan brake activation valve, open capstan winch 18, can put down steel rope smoothly for 17 1 pulling force of steel rope.

Receive steel rope--by automatically regulating flow regulating valve 13, increase the flow of gas, can increase the pressure of gas simultaneously, and increase the pressure of roller 2, roller 2 is pressed on the steel rope 17; Open capstan reel brake activation valve, steel rope 17 is tightly arrangement in order under the rotation of capstan winch 18; Behind the full one deck of row, the tension force of steel rope 17 is greater than roller 2 application forces, and steel rope 17 ranked second layer automatically, and the rest may be inferred, and steel rope 17 just can compact, orderly being arranged on the capstan winch 18.

Claims

1. a heavy wrecker is pressed rope mechanism, comprise roller (2), press frame (6) and compressed air brake cylinder (9), it is characterized in that: described pressure frame (6) is separately fixed on the steel pipe (11) by an end of first connecting rod (10) and second connecting rod (12) to be formed, the steel pipe (11) of described pressure frame (6) is hinged on the support (5), described roller (2) is installed in the other end of described second connecting rod (12) by primary shaft (3) and antifriction-bearing box (4), the piston rod of the other end of described first connecting rod (10) and compressed air brake cylinder (9) is hinged, and described compressed air brake cylinder (9) is communicated with the auxiliary air receiver (15) in chassis by flow regulating valve (13) and control cock (14).