Single-cylinder plug pin type telescopic arm, crane and telescoping method of single-cylinder plug pin type telescopic arm

A single-cylinder plug-in, telescopic boom technology, applied in cranes and other directions, can solve the problems of increased friction of the telescopic cylinder, increased weight of the telescopic cylinder, and increased cost of the telescopic cylinder, reducing the cylinder diameter and rod diameter, shortening the length of the cylinder, The effect of reducing the weight of the vehicle

CN103407912BActive Publication Date: 2015-06-17XUZHOU HEAVY MASCH CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Publication Date
2015-06-17

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Abstract

The invention relates to a single-cylinder plug pin type telescopic arm, a crane and a telescoping method of the single-cylinder plug pin type telescopic arm. The single-cylinder plug pin type telescopic arm comprises a basic arm and at least one section of telescopic arm which is sleeved in the basic arm, wherein coaxial central holes are formed in the tails of the telescopic arms; a telescopic oil cylinder is arranged in the central holes and comprises a cylinder rod and a cylinder barrel; at least two cylinder heads are fixedly sleeved outside the cylinder barrel in the longitudinal direction; at least three arm pin holes are respectively formed in the basic arm and the telescopic arm in the longitudinal direction. The single-cylinder plug pin type telescopic arm provided by the invention adopts the telescopic oil cylinder and the at least two cylinder heads; each cylinder head can be used for locking and unlocking the telescopic oil cylinder and any one telescopic arm; in a relay manner, the telescopic arms stretch or shrink; telescoping of the single-cylinder plug pin type telescopic arm is realized; the length of the oil cylinder is reduced; the cylinder diameter and the rod diameter of the oil cylinder are reduced; the cost of the oil cylinder is lowered; the loading weight is reduced; the hoisting capability is improved; the design capability of the crane is improved.
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Description

technical field

[0001] The invention relates to the field of engineering machinery, in particular to a single-cylinder bolt-type telescopic arm, a crane including the single-cylinder bolt-type telescopic arm and a telescoping method for the single-cylinder bolt-type telescopic arm. Background technique

[0002] The single-cylinder bolt system is a device built into the boom of the crane to realize the telescopic function of the boom. It is mainly composed of a telescopic boom and a telescopic oil cylinder, including the boom pin, the boom pin hole, the cylinder head, the cylinder pin, Cylinder rods, cylinder barrels, dovetail grooves, detection switches and other auxiliary facilities are the main functional components for the telescopic boom. The cylinder head is located at a certain position of the cylinder barrel or piston rod of the telescopic cylinder, and is used to control the device for fixing and separating the telescopic cylinder and the telescopic arm, mainly inclu...

Examples

Embodiment Construction

[0047] The technical solutions of the present invention will be described in further detail below with reference to the accompanying drawings and embodiments.

[0048] 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. All the alternative technical features and alternative technical solutions of the present invention are cited, and 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: Any technical features and any technical solutions in the embodiments do not limit the protection scope of the present invention, and the protection scope of the present invention should include any alternative technical solutions that those skilled in the art can think of without creative efforts.

[0049] For the convenience of desc...