Arm frame and engineering machinery

A boom and slewing mechanism technology, used in cranes, hoisting devices, fire rescue and other directions, can solve the problems of eccentric load of the whole vehicle and affect the stability of the whole vehicle, and achieve the effect of improving stability and wide application range.

Active Publication Date: 2014-05-21
BEIJING SANY HEAVY MASCH CO LTD
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  • Abstract
  • Description
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  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In related technologies, the first arm (main arm) and the second arm (auxiliary arm) of aerial work machinery are usually connected by a bridge structure, that is, when the second arm (auxiliary arm) is retracted and working, it is located on the first arm (main arm) side, the centers of gravity of the two do not coincide in the longitudinal plane (that is, the vertical plane), resulting in unbalanced loading of the vehicle and affecting the stability of the vehicle

Method used

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  • Arm frame and engineering machinery
  • Arm frame and engineering machinery
  • Arm frame and engineering machinery

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Embodiment Construction

[0039] In order to understand the above-mentioned purpose, features and advantages of the present invention more clearly, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0040] In the following description, many specific details are set forth in order to fully understand the present invention. However, the present invention can also be implemented in other ways different from those described here. Therefore, the protection scope of the present invention is not limited by the specific details disclosed below. EXAMPLE LIMITATIONS.

[0041] The present invention will be further described below in conjunction with the accompanying drawings and embodiments. It should be noted that, in the case of no conflict, the embodiments of the present application and the features in the embodiments can be combined with each other.

[0042] Such as figure 1 , figure 2 As shown, the present invention pr...

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Abstract

The invention provides an arm frame. The arm frame comprises a first arm frame, a second arm frame, a variable amplitude mechanism for unfolding and folding the second arm frame, a rotary mechanism, a rotary drive device and a positioning device, wherein the rotary mechanism is mounted at one end of the first arm frame, and one end of the second arm frame is connected with the rotary mechanism; the rotary mechanism is driven by the rotary drive device to rotate so that the second arm frame can rotate around a rotary shaft line of the rotary mechanism; and after the second arm frame rotates to a position at an angle, the rotary mechanism is fixed through the positioning device so that the first arm frame and the second arm frame are kept in the angular relationship. The invention further discloses engineering machinery comprising the arm frame. Owing to the technical scheme, the eccentric load between the first arm frame and the second arm frame during operation can be removed, the stability of the whole vehicle can be improved, and the structures of the first arm frame and the second arm frame are not limited. Therefore, the arm frame is wide in range of application and is flexible and convenient.

Description

technical field [0001] The invention relates to the field of engineering machinery, in particular to an arm frame and an engineering machine with the arm frame. Background technique [0002] With the rapid development of the economy, the number of high-rise buildings is increasing, and the height is getting higher and higher, which requires the higher working height of aerial work machinery and equipment. Due to the short length of the single-section boom, in order to achieve a higher working height, the existing aerial work machinery and equipment generally adopt the boom form of "No. 1 boom + No. 2 boom" or "main boom + auxiliary boom". The first arm (main arm) generally adopts a multi-section boom, the second arm (secondary arm) adopts a multi-section boom or a single-section boom, and a suitable connection structure is used between the first arm (main arm) and the second arm (secondary arm) , to meet the working requirements of the second arm (auxiliary arm). [0003] ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B66C23/683B66F11/04A62C27/00E04G21/04
Inventor 易小刚石鹏飞曾洁如
Owner BEIJING SANY HEAVY MASCH CO LTD
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