Engineering machine and telescopic distribution arm support thereof

Abstract

The invention discloses a telescopic cloth boom used for engineering machinery, comprising a boom body and a delivery pipe; the boom body includes at least two telescopic arms, and the delivery pipe includes sequentially hinged head pipes (21) , the middle pipe (22) and the end pipe (23); the head end of the head pipe (21) is hinged on the side or bottom surface of the first telescopic arm (11) of the boom body, and the end pipe The tail end of (23) is connected to the side or the bottom surface of the telescopic arm (12) of the boom body; the middle pipe (22) can slide along the length direction of the boom body through the hanger (3) and can It is rotatably connected to the bottom surface of the boom body. The structural design of the telescopic fabric boom can significantly reduce the maximum height of the conveying pipe during its folding and unfolding process, thereby ensuring the smooth progress of construction operations. In addition, the invention also discloses a construction machine comprising the above-mentioned telescopic cloth boom.

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 a construction machine including the telescopic cloth boom. Background technique [0002] Existing concrete pump trucks generally use multi-section M-type (low deployment height, fast speed), R-type (compact structure) or RZ-type boom (combining the advantages of both M-type and R-type, suitable for long-arm pumps) car). In the field of short-boom pump trucks, there are more stringent requirements for the height and flexibility of the boom of the pump truck, so as to expand the operating function and improve the scope of application of the equipment. For example, use short-boom pump trucks inside buildings or tunnels construction. In order to meet the above requirements, the telescopic boom has been more and more widely used. [0003] The Chinese patent "published by the State Intellectu...

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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