Folding arm support and elevating fire truck comprising same
A technology of folding arms and jibs, which is used in fire rescue and other directions to save height and space, improve strength and rigidity, and ensure safety and reliability.
Active Publication Date: 2012-07-18
XCMG FIRE FIGHTING SAFETY EQUIP CO LTD
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- Abstract
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- Application Information
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Problems solved by technology
It can be seen that the arrangement of the existing upper and lower folding arms has become the biggest obstacle restricting the improvement of the performance of the fire truck.
Method used
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[0031] Based on the structure of the existing main arm plus folding arm combined boom, the present invention has optimized the design, the core of which is the change of the relative positional relationship between the main arm and the folding arm. The back is located at the side of the main arm. In this state, the folding arm does not occupy the overall height of the folding arm frame. The overall height of the folding arm frame is basically the height of the main arm, which can effectively save the height space of the overall design.
[0032] The orientation words involved in this article, such as horizontal and front, are defined based on the perspective of the operator facing the front of the vehicle; it should be understood that the use of the orientation words should not limit the scope of protection claimed in this application.
[0033] Without loss of generality, the present embodiment will be described below in detail by taking a fire truck as an example in conjunction...
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The invention discloses a folding arm support which comprises a main arm, a folding arm, a connecting member and an amplitude-changing mechanism for driving the folding arm to carry out amplitude-changing operation relative to the main arm, wherein one end of the connecting member is fixedly connected with the front part of the main arm, and the other end of the connecting member transversely extends out of the side of the main arm; and the folding arm and the other end of the connecting member are hinged at a first hinge point, and the amplitude-changing mechanism is arranged between the folding arm and the connecting member so as to drive the folding arm to carry out the amplitude-changing operation. The relative position relationship between the main arm and the folding arm is in a parallel state approximately, thereby enabling the withdrawn folding arm to be positioned on the side of the main arm; under the state, the folding arm does not occupy the overall height of the folding arm support, the overall height of the folding arm support is the height of the main arm basically, and the height space of overall design can be effectively saved. On the basis, the invention further provides an elevating fire truck comprising the arm support.
Description
technical field [0001] The invention relates to the technical field of engineering machinery, in particular to a folding arm frame and an elevating fire truck with the arm frame. Background technique [0002] The special chassis of the existing high-lifting fire truck is equipped with a lifting arm frame and a pipeline for transporting fire fighting fluid. At present, there are three main structures of the lifting arm frame for elevating fire trucks: first, the main arm plus a folding arm combined arm frame; second, a multi-section folding arm frame; third, folding by two sets of main arms combined boom. The above three types of jib structures have a common feature: the jib structures all adopt the upper and lower folding arrangement. [0003] See figure 1 , the figure shows the basic structure of the main arm plus folding arm combined boom, the main arm shown in the figure is a telescopic arm; in the retracted state, the folding arm section is located under the telescopi...
Claims
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IPC IPC(8): A62C27/00
Inventor 史先信张义张军刘美玲
Owner XCMG FIRE FIGHTING SAFETY EQUIP CO LTD