CN203128112U

CN203128112U - Bi-directional traction stretchable lifting arm

Info

Publication number: CN203128112U
Application number: CN 201320025820
Authority: CN
Inventors: 赵建军; 王燕铭; 杨利斌; 姚跃亭; 袁胜智; 屈彩红; 任云
Original assignee: Naval Aeronautical Engineering Institute of PLA
Current assignee: Naval Aeronautical Engineering Institute of PLA
Priority date: 2013-01-18
Filing date: 2013-01-18
Publication date: 2013-08-14
Anticipated expiration: 2023-01-18

Abstract

The utility model discloses a bi-directional traction stretchable lifting arm. The bi-directional traction stretchable lifting arm comprises a supporting hinged base (15), wherein a basic arm (1) and a swing hydraulic cylinder (14) are arranged on the supporting hinged base (15), and a stretchable hydraulic cylinder (2) is arranged on the basic arm (1). The bi-directional traction stretchable lifting arm is characterized in that a first-level stretchable arm (3), a second-level stretchable arm (5), a third-level stretchable arm (7), a fourth-level stretchable arm (9) are arranged inside the basic arm (1) in sequence, pulley wheels are arranged on the inner wall of the top end of each stretchable arm and at the bottom end of each stretchable arm respectively, a stretching traction steel wire rope and a contracting traction steel wire rope are wound on each pulley wheel, and an equipment installation platform (10) is arranged on the top of the fourth-level stretchable arm (9). According to the bi-directional traction stretchable lifting arm, each stretchable arm is of a bi-directional traction steel wire rope pulley wheel structure and is connected with a corresponding upper-level stretchable arm and a corresponding lower-level stretchable arm, automatic switching between active traction and passive following is achieved in a lifting process, mutual interference is avoided, positioning achieved by mutual traction is guaranteed, the work limit that a traditional stretchable arm can only be driven to contract vertically by means of self weight is overcome, the structure is simple, an anti-disengaging positioning device is not needed, operation is simplified, efficiency is improved, and using requirements are reduced.

Description

The bivector traction telescopic boom

Technical field:

The utility model relates to lifting lifting technology field, be a kind of bivector traction telescopic boom specifically, be applicable to the use under the occasion of little load, high lifting, be specially adapted to the vehicle-mounted telescopic boom of motor-driven guarantee and lift the calibration of test equipment distant object and detect.

Background technology:

Propelling development along with the modernization of national defense, the remote vehicle-mounted calibration antenna hoisting gear of armament systems target maneuver has been equipped army, because relevant device weight such as antenna are lighter, adjustable height higher (generally more than 20 meters), therefore adopt the multi-stage expansion arms more, a power hydraulic cylinder is in conjunction with the multistage arm synchronous extension of multistage wire rope pulley group unidirectional drive, rely on the gravity retraction structure, retraction can only be finished under the vertical state of telescopic boom, retraction is set level and is needed to add in addition anti-slip registration device between the travelling position telescopic boom, complex operation requires high, directly influences the formation of quick supportability.

Summary of the invention:

The purpose of this utility model is the deficiency that overcomes above-mentioned prior art, and a kind of bivector traction telescopic boom is provided, mainly solve existing telescopic boom and can only under the vertical state of telescopic boom, rely on gravity retraction and retraction to set level problems such as need adding anti-slip registration device under the travelling position in addition.

The technical solution of the utility model is: the bivector traction telescopic boom, it comprises the supporting free bearing, establish basic arm and oscillating motor on the supporting free bearing, establish telescopic hydraulic cylinder at basic arm, the piston rod of the hinged oscillating motor in top of basis arm, its special character is to establish the one-level telescopic boom in basic arm inside, establish pulley respectively at one-level telescopic boom top inwall and bottom, twine secondary extension traction steel rope on the inwall pulley of top, twine secondary on the pulley of bottom and shrink haulage cable, at the piston rod of one-level telescopic boom top articulated telescopic hydraulic actuating cylinder; Establish the secondary telescopic boom in one-level telescopic boom inside, establish pulley respectively at secondary telescopic boom top inwall and bottom, twine three grades of extension traction steel ropes on the inwall pulley of top, twine three grades of contraction haulage cables on the pulley of bottom; Establish three grades of telescopic booms in secondary telescopic boom inside, establish pulley respectively at three grades of telescopic boom top inwalls and bottom, twine level Four extension traction steel rope on the inwall pulley of top, twine level Four on the pulley of bottom and shrink haulage cable; Establish the level Four telescopic boom three grades of telescopic boom inside, at level Four telescopic boom top equipment erecting stage.

Compared with the prior art bivector traction telescopic boom described in the utility model has following good effect: 1, each telescopic boom all adopts bivector traction wire rope pulley structure, link to each other with the next stage telescopic boom with upper class respectively, overcoming telescopic boom can only be by the work limitation of the passive vertical retraction of deadweight, theoretically, all extensible contractions of any angle of telescopic boom; 2, lifting process initiatively draws and passively follows automatic conversion, and mutually noninterfere guarantees mutual tractive positioning bidirectional traction simultaneously again, and simple in structure, it is convenient to realize; 3, interlock between the telescopic boom, do not need anti-slip registration device; 4, simplified control, efficient improves, and has reduced operating needs simultaneously.

Description of drawings:

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

The drawing explanation:

7 three grades of telescopic booms of 1 basic arm 2 telescopic hydraulic cylinders, 3 secondary extension traction steel rope 6 three grades of extension traction steel ropes of 4 one-level telescopic booms, 5 secondary telescopic booms, 8 level Four extension traction steel ropes, 9 level Four telescopic booms, 10 equipment erecting stages, 11 level Four are shunk 12 3 grades of contraction haulage cable 13 secondarys of haulage cable and are shunk haulage cable 14 oscillating motors 15 supporting free bearings.

The specific embodiment:

In order to understand better and to implement, provide specific embodiment below in conjunction with accompanying drawing and describe the utility model bivector traction telescopic boom in detail.

Embodiment 1, referring to Fig. 1, be processed into supporting free bearing 15, at supporting free bearing 15 basic arm 1 and oscillating motor 14 are installed, the piston rod of the hinged oscillating motor 14 in top of basis arm 1, at basic arm 1 telescopic hydraulic cylinder 2 is installed, at basic arm 1 internal activity one-level telescopic boom 3 is installed, at one-level telescopic boom 3 top inwalls and bottom pulley is installed respectively, twine secondary extension traction steel rope 4 on the inwall pulley of top, twine secondary on the pulley of bottom and shrink haulage cable 13, at the piston rod of one-level telescopic boom 3 top articulated telescopic hydraulic actuating cylinders 2; At one-level telescopic boom 3 internal activities secondary telescopic boom 5 is installed, at secondary telescopic boom 5 top inwalls and bottom pulley is installed respectively, twine three grades of extension traction steel ropes 6 on the inwall pulley of top, twine three grades of contraction haulage cables 12 on the pulley of bottom; At secondary telescopic boom 5 internal activities three grades of telescopic booms 7 are installed, at three grades of telescopic booms, 7 top inwalls and bottom pulley are installed respectively, twine level Four extension traction steel rope 8 on the inwall pulley of top, twine level Four on the pulley of bottom and shrink haulage cable 11; At three grades of telescopic boom 7 internal activities level Four telescopic boom 9 is installed, at level Four telescopic boom 9 tops fixed installation equipment erecting stage 10.

Bivector traction telescopic boom described in the utility model can increase and decrease the quantity of telescopic boom as required, and its principle of work is constant.

Bivector traction telescopic boom described in the utility model, deployment step is as follows: (1) oscillating motor stretching, extension work, and the integral telescopic arm changes pendulum around the hinge of supporting free bearing from level attitude to vertical direction, after putting in place, oscillating motor pressurize self-locking quits work; (2) start telescopic hydraulic cylinder, promote the one-level telescopic boom and launch, simultaneously under the mutual action of secondary, three grades, level Four extension traction steel rope and pulley, secondary, three grades and level Four telescopic boom synchronous expansion, after putting in place, telescopic hydraulic cylinder pressurize self-locking quits work; (3) expansion is ready, equipment platform unlatching work; The bivector traction telescopic boom removes that to receive step opposite with deployment step.

Claims

1. bivector traction telescopic boom, it comprises supporting free bearing (15), establish basic arm (1) and oscillating motor (14) on the supporting free bearing (15), establish telescopic hydraulic cylinder (2) at basic arm (1), the piston rod of the hinged oscillating motor in top (14) of basis arm (1), it is characterized in that establishing one-level telescopic boom (3) in basic arm (1) inside, establish pulley respectively at one-level telescopic boom (3) top inwall and bottom, twine secondary extension traction steel rope (4) on the inwall pulley of top, twine secondary on the pulley of bottom and shrink haulage cable (13), at the piston rod of one-level telescopic boom (3) top articulated telescopic hydraulic actuating cylinder (2); Establish secondary telescopic boom (5) in one-level telescopic boom (3) inside, establish pulley respectively at secondary telescopic boom (5) top inwall and bottom, twine three grades of extension traction steel ropes (6) on the inwall pulley of top, twine three grades of contraction haulage cables (12) on the pulley of bottom; Establish three grades of telescopic booms (7) in secondary telescopic boom (5) inside, establish pulley respectively at three grades of telescopic booms (7) top inwall and bottom, twine level Four extension traction steel rope (8) on the inwall pulley of top, twine level Four on the pulley of bottom and shrink haulage cable (11); Establish level Four telescopic boom (9) in three grades of telescopic booms (7) inside, at level Four telescopic boom (9) top equipment erecting stage (10).