Engineering machine and telescopic distribution arm support thereof

Abstract

The invention discloses a telescopic distribution arm support. The telescopic distribution arm support is used for an engineering machine and comprises an arm support body and a conveying pipe, wherein the arm support body comprises at least two sections of telescopic arms; the conveying pipe comprises a head pipe (21), a middle pipe (22) and a tail pipe (23) which are sequentially hinged; the head end of the tail pipe (21) is hinged to the lateral surface or the bottom surface of a first-section telescopic arm (11) of an arm support body; the tail end of the tail pipe (23) is connected to the lateral surface or the bottom surface of a last-section telescopic arm (12) of the arm support body; and the middle pipe (22) can slide in the length direction of the arm support body through a hanging rack (3) and can be rotationally connected to the bottom surface of the arm support body. Due to the structural design of the telescopic distribution arm support, the maximum height of the conveying pipe in the folding and unfolding process of the telescopic distribution arm support can be remarkably reduced, so that the smooth operation of construction operation can be ensured. In addition, the invention further discloses the engineering machine comprising the telescopic distribution arm support.

Description

Technical field [0001] The invention relates to the technical field of engineering machinery, in particular to a telescopic cloth boom. In addition, the present invention also relates to an engineering machine including the telescopic cloth boom. Background technique [0002] Existing concrete pump trucks generally use multi-section M-type (low deployment height and fast speed), R-type (compact structure) or RZ-type boom (both the advantages of M and R-type, suitable for long-boom pumps car). In the field of short-boom pump trucks, there are more stringent requirements for the height and flexibility of the pump boom, so as to expand the operation function and improve the scope of application of the equipment, for example, use the short-boom pump truck in buildings or tunnels construction. In order to meet the above requirements, telescopic booms have been more and more widely used. [0003] A Chinese patent published by the State Intellectual Property Office of China with publi...

AI Technical Summary

Problems solved by technology

[0006] First, if figure 1 and image 3 As shown, the middle pipe 2'2 includes a first middle pipe 2'21 and a second middle pipe 2'22. When the two middle pipes are unfolded and folded, they rotate in a vertical plane, thus As a result, the height space in the vertical plane occupied by the conveying pipe is relatively large when it is unfolded and folded, which is a great challenge for working in low-height working spaces such as tunnels, because the middle pipe 2′2 is rotating During the process, there is a possibility of touching the roof wall of the tunnel, making it impossible to complete the construction work

[0007] Second, please refer to figure 1 and image 3 , when the middle tube 2'2 is folded or unfolded, the middle tube 2'2 needs to rotate around the first hinge point 4'1, and during this process, the upper part of the middle tube 2'2 will exceed the first telescopic arm 1 The top surface of '1, that is, the middle pipe 2'2 will exceed the top surface of the first telescopic arm 1'1, so that the middle pipe 2'2 will be more likely to touch the top wall of the tunnel during the rotation process. , so that the construction work cannot be completed

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