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Stay cord-driven arm support system and concrete pump truck

A rope-driven, boom technology, applied in the field of concrete pump trucks, can solve the problems of restricting the development of boom booms, the inability to rotate, and high cost

Active Publication Date: 2012-10-03
SANY HEAVY IND CO LTD (CN)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In order to ensure the operation safety of concrete pump trucks, the specifications of the oil cylinder and connecting rod are generally increased to meet its force requirements, especially in long-arm concrete pump trucks, the oil cylinder and connecting rod are getting thicker and thicker, which leads to boom The heavy frame structure and high cost seriously restrict the development of the super-long boom; at the same time, the boom is limited by the oil cylinder and the connecting rod mechanism, the rotation angle between two adjacent boom sections is limited, and the distance between two boom sections is limited. The rotation at any angle cannot be realized, and the flexibility of the entire boom movement is limited, which affects the convenience of construction

Method used

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  • Stay cord-driven arm support system and concrete pump truck
  • Stay cord-driven arm support system and concrete pump truck
  • Stay cord-driven arm support system and concrete pump truck

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0052] like figure 1 As shown, the rope-driven jib system provided by the present invention includes a multi-section jib section (only the N-1 jib section 1 and the N-th jib section 2 are shown in the figure), and the multi-section jib section Hinge holes are respectively provided at both ends of the head and tail, the hinge hole at the head end of the Nth boom section 2 is hinged with the tail end hinge hole of the N-1st boom section 1 through a pin shaft, and the two boom sections can be wound around The hinge points do relative movement.

[0053] In this embodiment, the Nth jib section 2 can rotate in a vertical plane, and in the rotation plane, a first pull rope 3 and a first pull rope 3 are respectively arranged on both sides along the length direction of the Nth jib section 2. Two stay ropes 4, one end of the first stay rope 3 and the second stay rope 4 are all fixed on the tail end of the Nth jib section 2, and the other end of the first stay rope 3 is connected to the...

Embodiment 2

[0062] like figure 2 As shown, the first stay rope 3 and the second stay rope 4 are multiple stay ropes, and the fixed points 9 of the multiple stay ropes on the same side of the jib section on the jib section 2 do not overlap, The first stay cord 3 and the second stay cord 4 can be retracted and retracted simultaneously by the side stay cord retractable device; in specific applications, the first stay cord 3 can be provided with a plurality of stay cords. The number is the same as the number of multiple stay ropes in the second stay rope 4, so that the fixed points of the corresponding stay ropes on both sides on the jib section 2 are the same, and the corresponding stay ropes on both sides can also be set on the jib section 2. The fixed points are different. Other structures of this embodiment are the same as those of Embodiment 1 above, and will not be repeated here.

[0063] Adopting the solution of this embodiment, having multiple stay ropes can reduce the stress of ea...

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PUM

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Abstract

The invention discloses a stay cord-driven arm support system. The system comprises at least two arm joints which are hinged with each other end to end, and all the arm joints can rotate around the hinge points of the arm joints; at least one first stay cord and at least one second stay cord are at least arranged on two sides of an Nth arm joint along the length direction, one end of each first stay cord and one end of each second stay cord are fixed on an Nth arm joint, and the other end of each first stay cord and the other end of each second stay cord are connected to stay cord reeling and unreeling devices; the stay cord reeling and unreeling devices are arranged on an N-1th arm joint which is adjacent to the Nth arm joint; and the stay cord reeling and unreeling devices reel and unreel the first stay cords and the second stray cords. The invention also provides a concrete pump truck comprising the arm support system. According to the arm support system, all the arm joints are folded and unfolded by the stay cords; and the arm support system is simple in structure and light in weight; and space is provided for increasing the length of an arm support.

Description

technical field [0001] The invention relates to the field of construction machinery, more specifically, to a boom system driven by a pull rope and a concrete pump truck comprising the boom system. Background technique [0002] The booms of construction machinery mainly include fixed booms, telescopic booms and articulated booms. Tower cranes and crawler cranes generally use fixed booms, truck cranes generally use telescopic booms, and concrete pump trucks generally use articulated booms. [0003] In the prior art, the articulated boom of the concrete pump truck includes multiple boom sections that are articulated in sequence, for example, the first boom section and the second boom section are hinged and driven by an oil cylinder, and the first boom section and the second boom section A first link and a second link are connected therebetween to form a planar four-bar linkage. Through the telescopic action of the oil cylinder, the planar four-bar linkage mechanism is pushed ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E04G21/02
Inventor 易小刚张作良曾凯李东
Owner SANY HEAVY IND CO LTD (CN)