Winch driven expansion and retraction technique and engineering mechanical equipment

A technology of construction machinery and equipment, which is applied in hoisting devices, clockwork mechanisms, lifting devices, etc., can solve the problem of large peripheral space occupation of the ladder frame, and achieve the lifting capacity of the ladder frame, short operation time and compact structure. Effect

Inactive Publication Date: 2016-11-09
XCMG CONSTR MACHINERY +1
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0007] At least one object of the present invention is to provide a telescopic ladder frame device and construction machinery equipment provided with the telescopic ladder frame device, which solves the technical problem of the prior art that the peripheral space on the ladder frame is too large

Method used

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  • Winch driven expansion and retraction technique and engineering mechanical equipment
  • Winch driven expansion and retraction technique and engineering mechanical equipment
  • Winch driven expansion and retraction technique and engineering mechanical equipment

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Embodiment Construction

[0052] Below you can refer to the accompanying drawings Figure 1 to Figure 5 And the content of the text to understand the content of the present invention and the differences between the present invention and the prior art. The technical solution (including the preferred technical solution) of the present invention will be further described in detail below by means of the accompanying drawings and by way of listing some optional embodiments of the present invention. It should be noted that: any technical feature and any technical solution in this embodiment are one or more of a variety of optional technical features or optional technical solutions. Citing all the alternative technical features and alternative technical solutions of the present invention, it is not convenient for the implementation of each technical feature to emphasize that it is one of the optional multiple implementation modes, so those skilled in the art should know that: Replace any technical means prov...

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Abstract

The invention relates to the technical field of engineering machinery, discloses a winch driven expansion and retraction technique and engineering mechanical equipment and solves the technical problem of large outer space occupancy of a ladder in the prior art. A retractable ladder device comprises a winch, pull ropes and a retractable ladder, and the retractable ladder comprises a seat and a retractable ladder body mounted on the seat. The winch is arranged on the seat or at a position, close to the seat, of the retractable ladder body and capable of driving the retractable ladder body to expand or retract relative to the seat through the pull ropes. The engineering mechanical equipment comprises the retractable ladder device. The outer space, occupied by the retractable ladder device, of the ladder is reduced, and load burden is relieved for the ladder.

Description

technical field [0001] The invention relates to the technical field of construction machinery, in particular to a telescopic ladder frame device and construction machinery equipment provided with the telescopic ladder frame device. Background technique [0002] Since the aerial ladder fire truck needs to change the length of the ladder frame according to the needs of high-altitude fire fighting, there are three driving forms of the telescopic mechanism that drives the length change of the ladder frame: mechanical type, hydraulic type and compound type. Mechanical drives include steel rope reel drives, rack and pinion drives, etc. The hydraulic drive is mainly composed of a telescopic hydraulic cylinder and an oil circuit. The composite drive is composed of telescopic hydraulic cylinders and mechanical transmission devices. The number and mode of action of oil cylinders depend on the number of telescopic ladder sections. Mechanical transmissions usually use steel cables or ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B66F7/06B66F7/28B66D1/30
CPCB66F7/06B66D1/30B66F7/28
Inventor 韩向芹姚占磊陈瑞祥
Owner XCMG CONSTR MACHINERY
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