CN201473209U

CN201473209U - Concealed-type towing chain device

Info

Publication number: CN201473209U
Application number: CN2009203062381U
Authority: CN
Inventors: 刘国良; 吴晓明
Original assignee: Hunan Sinoboom Heavy Industry Co Ltd
Current assignee: Hunan Sinoboom Heavy Industry Co Ltd
Priority date: 2009-07-15
Filing date: 2009-07-15
Publication date: 2010-05-19
Anticipated expiration: 2019-07-15

Abstract

The utility model discloses a concealed-type towing chain device comprising a basic arm (1), a first arm frame (2), a second arm frame (3) and a towing chain (7). The rear end of a conduit (4) is fixed on the basic arm frame (1); the fixed end of the towing chain (7) is connected with the front end of the conduit (4); the movable end of the towing chain (7) moves round a main wheel frame (6) and is fixed at the tail of the second arm frame (3); and a cable, an oil pipe, and the like penetrate from the tail part of the basic chain (1), pass through the conduit (4) and the towing chain (7) sequentially, are laid along the bottom of the second arm frame (3) and are finally introduced from the head of the second arm frame (3) to an actuating mechanism. The whole towing chain device is concealed in the arm frame to protect the towing chain and the conduit and improve the reliability.

Description

A kind of built-in drag chain device

Technical field

The utility model relates to the built-in drag chain device on a kind of aerial lift device (high-altitude operation platform) working arm.

Background technology

Aerial lift device often adopts towing chain mechanism that hydraulic power, electrical control signal and welder power etc. are transported in the control box on the actuating unit of jib end and the hurdle of working, particularly for telescopic boom posture aerial lift device by pipeline.Referring to Fig. 1 and Fig. 2, existing towing chain mechanism mainly adopts external, and keystone configuration is formed and to be comprised hydraulic pressure and electric pipeline 13, drag chain 7, conduit 4, bracket 12, support 11, basic arm 1, first jib 2, second jib 3.Its principle of work shows as hydraulic pressure and electric pipeline is arranged in drag chain by the mode of flexible pipe, hydraulic power and electric signal is transported to the second jib end through conduit again, thereby guarantees the connection of signal and power up and down.

The major defect of prior art: whole towing chain mechanism places outside side of jib or top, if jib and other object bump or meet falling object from high altitude, towing chain mechanism is sustained damage, thereby influence the normal use of equipment in operation.

The utility model content

Technical problem to be solved in the utility model provides a kind of high-altitude operation platform for three joint telescopic jibs, can be effectively protected, and can prevent to produce distortion because of colliding with external object, thereby improve the built-in drag chain device of drag chain reliability of service.

In order to solve the problems of the technologies described above, a kind of built-in drag chain device of the utility model confession, comprise basic arm, first jib, second jib, oil cylinder, drag chain and oil pipe, cable, on described oil cylinder, be provided with roller, be provided with the great wheel frame in described oil cylinder bottom, on described great wheel frame, be provided with guide wheel, the fixed end of described drag chain directly or by conduit is fixed on the inner rear end of described basic arm, the afterbody that is fixed in described second jib behind the described guide wheel is walked around in the mobile terminal of described drag chain, described roller supports described drag chain and/or described conduit, described oil pipe, cable enters from described basic arm afterbody and passes described conduit and/or drag chain successively, draw along the forward end laying of described second jib bottom at the described second jib afterbody, lead to actuating unit at the described second jib head.

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

1. whole towing chain mechanism places jib inside, has eliminated the drag chain that causes because of jib and exterior object slight impact and has lost efficacy;

2. entire mechanism obtains simplifying, and the kind of part and quantity reduce, and has improved the reliability during mechanism uses;

3. the jib outside does not have unnecessary mechanism, has simplified the coating process of jib part outside face.

Description of drawings

Fig. 1 is existing towing chain mechanism scheme drawing;

Fig. 2 is along A-A line cut-away view among Fig. 1;

Fig. 3 is the utility model towing chain mechanism scheme drawing (a jib retracted mode);

Fig. 4 is the utility model towing chain mechanism scheme drawing (jib stretches out state).

The specific embodiment

Below with reference to accompanying drawing the utility model is described in further details.

Referring to Fig. 3, first jib 2 is sleeved in the basic arm 1, second jib 3 is sleeved in first jib 2, on oil cylinder 5, be provided with roller 10, the roller 10 that is located on the oil cylinder 5 is used for supporting tube 4, drag chain 7 deadweights reach the wherein weight of oil pipe cable, be provided with great wheel frame 6 in oil cylinder 5 bottoms, on great wheel frame 6, be provided with guide wheel 8, guide wheel 8 is used to guide drag chain 7 and cable oil pipe wherein to hold along great wheel frame 6, great wheel frame 6 is provided with the support wheel 9 that support cylinder 5 slides in second jib 3, conduit 4 rear ends are installed in basic arm 1 inner rear end by hinge, conduit 4 front ends link to each other with drag chain 7, the afterbody that is fixed in second jib 3 behind great wheel frame 6 and the guide wheel 8 is walked around in the mobile terminal of drag chain 7, oil pipe, cable enters conduit 4 from basic arm 1 afterbody, pass conduit 4 and drag chain 7 successively, draw along second jib, 3 bottom forward end at second jib, 3 afterbodys and lay, lead to actuating unit at second jib, 3 heads.

After adopting the utility model drag chain device, drag chain 7 is seen Fig. 3 at first jib 2 and second jib, 3 retractions when putting in place, when jib begins to protract, oil cylinder 5 promotions first jib 2 that is fixed on the basic jib 1 travels forward, and by synchronization telescope mechanism second jib 3 is extended synchronously, simultaneously, drive is fixed on the same moved further of drag chain on second jib, drag chain is deployed in oil cylinder top after walking around great wheel frame 6 under the guiding of being located at guide wheel on the great wheel frame, referring to Fig. 4, process is reversible during the jib retraction.As seen, in the jib telescopic process, towing chain mechanism is all the time at the jib internal motion.

As from the foregoing, adopt structure of the present utility model after, whole towing chain mechanism is built in the jib fully, the jib outside does not have unnecessary mechanism, has eliminated the drag chain that causes because of jib and exterior object slight impact and has lost efficacy, and has improved the reliability of towing chain mechanism.

Claims

1. built-in drag chain device, comprise basic arm (1), first jib (2), second jib (3), oil cylinder (5), drag chain (7) and oil pipe, cable, it is characterized in that: on described oil cylinder (5), be provided with roller (10), be provided with great wheel frame (6) in described oil cylinder (5) bottom, on described great wheel frame (6), be provided with guide wheel (8), the fixed end of described drag chain (7) directly or by conduit (4) is fixed on the inner rear end of described basic arm (1), the afterbody that is fixed in described second jib (3) behind the described guide wheel (8) is walked around in the mobile terminal of described drag chain (7), described roller (10) supports described drag chain (7) and/or described conduit (4), described oil pipe, cable enters from described basic arm (1) afterbody and passes described conduit (4) and/or drag chain (7) successively, draw along the forward end laying of described second jib (2) bottom at described second jib (3) afterbody, lead to actuating unit at described second jib (3) head.