A crane and a boom thereof

A technology for booms and cranes, which is applied to cranes, etc., can solve problems such as limiting the section of the boom, occupying space for the rope row structure, and the lifting performance of the boom can not be fully exerted, so as to improve the lifting performance and improve the expansion and contraction The effect of vibration

Inactive Publication Date: 2013-04-24
SANY HEAVY IND CO LTD (CN)
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Problems solved by technology

[0003] Among them, the oil cylinder rope row mechanism is divided into a single-cylinder rope row and a double-cylinder rope row structure; specifically, the oil cylinder pushes one section of the arm to extend, and the first section of the arm drives the second section of the arm to extend through the rope row mechanism, and the second section of the arm is extended through the rope. The row structure drives the extension of the three-section boom, and so on, and each se

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  • A crane and a boom thereof

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Embodiment Construction

[0033] It should be noted that, in the case of no conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and examples.

[0034] see figure 1 , which shows a preferred embodiment of the boom in the present invention. As shown in the figure, the boom includes a basic boom 1 , at least one telescopic boom set sequentially fitted in the basic boom, at least one rope row mechanism, and a telescopic oil cylinder 10 .

[0035] Among them, the telescopic arm group includes the first telescopic arm 2 and the second telescopic arm 3 sleeved in the first telescopic arm 2, and the arm tails of the first telescopic arm 2 in the telescopic arm groups at all levels are all provided with first locking pin holes 21. A rope row mechanism is arranged between the second telescopic arm 3 and the first telescopic arm 2 in the telescop...

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Abstract

The invention discloses a crane and a boom thereof. The boom comprises a basic boom; at least one level of a telescopic boom group sleeved in the basic arm in sequence, wherein the telescopic group includes a first telescopic boom and a second telescopic boom sleeved in the first telescopic boom, and the end of the first telescopic boom in the telescopic boom group is provided with a first locking pin hole; at least one rope unwinding mechanism, wherein the rope unwinding mechanism is arranged between the second telescopic boom and the first telescopic boom of all the telescopic groups; and a telescopic cylinder arranged in the boom in an axial direction, wherein the piston rod end of the telescopic cylinder is fixedly connected to the end of the basic boom, and a locking pin cooperated with the first locking pin hole is arranged on the outer wall of the telescopic cylinder. According to the present invention, only one boom is driven out by the rope unwinding mechanism, thus greatly reducing the impact of rope elasticity to the telescopic mechanism, and effectively solving the boom stretching vibration problem due to a plurality of groups of rope unwinding mechanisms.

Description

technical field [0001] The invention relates to the field of construction machinery, in particular to a crane and its boom. Background technique [0002] At present, the telescoping mechanism of the boom is generally powered by the telescoping of the oil cylinder, and is generally divided into a cylinder rope mechanism and an oil cylinder latch mechanism according to the difference of the driving mechanism. [0003] Among them, the oil cylinder rope row mechanism is divided into a single-cylinder rope row and a double-cylinder rope row structure; specifically, the oil cylinder pushes one section of the arm to extend, and the first section of the arm drives the second section of the arm to extend through the rope row mechanism, and the second section of the arm is extended through the rope. The row structure drives the extension of the three-section boom, and so on, and each section boom is extended synchronously; because the rope row structure occupies a certain space, the s...

Claims

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Application Information

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IPC IPC(8): B66C23/693
Inventor 张晓广
Owner SANY HEAVY IND CO LTD (CN)
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