Electronic hyperextension-proof device of single cylinder bolt type telescopic boom crane oil cylinder

A single-cylinder bolt-type, telescopic arm technology, applied in the direction of cranes, transportation and packaging, load hanging components, etc., can solve the problems of hydraulic energy waste of mechanical structures, operators can not get alarm prompts, wear and other problems, to avoid waste Effect

Active Publication Date: 2011-09-14
XUZHOU HIRSCHMANN ELECTRONICS
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  • Summary
  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

This will cause a waste of hydraulic energy and wear of the mechanical structure. At the same time, because there is no controller and display involved, the operator cannot get an alarm prompt

Method used

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  • Electronic hyperextension-proof device of single cylinder bolt type telescopic boom crane oil cylinder
  • Electronic hyperextension-proof device of single cylinder bolt type telescopic boom crane oil cylinder
  • Electronic hyperextension-proof device of single cylinder bolt type telescopic boom crane oil cylinder

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Embodiment Construction

[0018] The present invention will be further described below in conjunction with accompanying drawing.

[0019] Such as figure 1 and figure 2 As shown in the figure, an electronic anti-overextension device for a cylinder of a single-cylinder bolt-type telescopic boom crane includes a controller 5, a cylinder arm position detection switch 2, a cylinder arm position detection block 3, a display 6 and an electric proportional valve 7.

[0020] The oil cylinder arm position detection switch 2 is fixed at the tail of the oil cylinder 4 and is electrically connected to the input end of the controller 5. It is used in conjunction with the oil cylinder arm position detection block 3. When its vertical position reaches the detection block 3, there will be a high voltage Level output, this high level disappears after leaving the detection block 3.

[0021] The oil cylinder arm position detection block 3 is fixed on the tail of the crane telescopic boom end arm 1, and is used in conju...

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Abstract

The invention discloses an electronic hyperextension-proof device of a single cylinder bolt type telescopic boom crane oil cylinder, belonging to the technical field of an engineering machinery telescopic boom. The electronic hyperextension-proof device comprises a controller, an oil cylinder boom position detection switch, an oil cylinder boom position detection block, a display and an electronic proportional valve, wherein the oil cylinder boom position detection switch is fixed on the tail part of the oil cylinder; the boom position detection switch is electrically connected with the inputend of the controller; the oil cylinder boom position detection block is fixed on the tail part of the tail section of boom of a crane telescopic boom; the communication interface of the controller is connected with a display; and an output port is electrically connected with the electronic proportional valve. The electronic hyperextension-proof device has the beneficial effect that a boom head structure can be prevented from being cracked up by an electronic control means when the oil cylinder continuously moves forwards, hydraulic energy waste and mechanical structure abrasion can be avoided, and the oil cylinder position can be reminded for an operator by audible and visual alarm.

Description

technical field [0001] The invention relates to an anti-overextension device for a crane cylinder, in particular to an electronic overextension prevention device for an oil cylinder of a single-cylinder bolt-type telescopic arm crane, which belongs to the technical field of construction machinery telescopic arms. Background technique [0002] In order to ensure the safety and reliability of each boom section during the telescopic process, with the development of all-terrain cranes and the boom length technology, the single-cylinder bolt telescopic mechanism is more and more widely used on the telescopic boom. Type interlocking system, after the spring-driven cylinder pin on the telescopic oil cylinder pins the telescopic arm, the connection between the section arm and other section arms is mechanically released; or in other words, only when a certain section of the telescopic arm and the telescopic oil cylinder are locked together can the joint be released. The connection be...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B66C23/88B66C13/48B66C13/16
Inventor 王基锋何光义齐志欣王玉金
Owner XUZHOU HIRSCHMANN ELECTRONICS
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