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Tensile beam, arm support and pump truck

A technology for tensile beams and booms, applied in the processing of building materials, construction, building structure, etc., can solve the problems of difficult manufacturing, inflexible movements, and many materials, and achieve weight reduction, production cost reduction, and economical savings. effect of material

Inactive Publication Date: 2012-07-18
SANY HEAVY IND CO LTD (CN)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the technical problems or at least one of the technical problems of the jib in the prior art, such as the use of many materials, heavy weight, inflexible movements, and difficulty in manufacturing due to the huge tensile force

Method used

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  • Tensile beam, arm support and pump truck
  • Tensile beam, arm support and pump truck
  • Tensile beam, arm support and pump truck

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0062] Such as image 3 , Figure 4 and Figure 5 As shown, the two ends above the upper plate 11 of the beam body 1 of the boom section are respectively provided with a first support seat 41 and a second support seat 42, and the cable is arranged between the first support seat 41 and the second support seat 42 2, and set a certain pre-tightening force when installing the cable 2.

[0063] A first support shaft 411 and a second support shaft 421 are respectively arranged on the first support seat 41 and the second support seat 42 , and the cable 2 is arranged on the first support shaft 411 and the second support shaft 421 .

Embodiment 2

[0065] Such as Figure 6 , Figure 7 and Figure 5 As shown, the two ends above the upper plate 11 of the beam body 1 of the boom section are respectively provided with a first support seat 41 and a second support seat 42, and the cable 2 is arranged between the first support seat 41 and the second support seat 42 , and set a certain pre-tightening force when installing the cable 2, and also set a tensioning device 3 on the cable 2, which can easily adjust the pre-tightening force on the cable 2.

[0066] A first support shaft 411 and a second support shaft 421 are respectively arranged on the first support seat 41 and the second support seat 42 , and the cable 2 is arranged on the first support shaft 411 and the second support shaft 421 .

Embodiment 3

[0068] Such as Figure 8 and Figure 5 As shown, the two ends of the upper inner surface of the side plate 13 of the beam body 1 of the boom section are respectively provided with a first support seat 41 and a second support seat 42, and the cable 2 is arranged on the first support seat 41 and the second support seat. 42, and pass through the upper plate 11, and a certain pre-tightening force is set when the drag cable 2 is installed, and a tensioning device 3 is set on the drag cable 2, which can easily adjust the pre-tightening force on the drag cable 2.

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Abstract

The invention provides a tensile beam comprising a beam body and at least one stay cable arranged on the beam body, wherein the stay cable is arranged on the tensioned surface of the beam body along the axial direction of the beam body and is provided with a pre-tightening force. The invention also provides an arm support and a pump truck comprising the arm support, wherein the arm support comprises at least one arm segment manufactured by adopting the tensile beam. Through the technical scheme of the invention, the tension born by the beam body can be increased; on the premise that the length and the loading capacity of the arm support can be guaranteed, the thickness of plates of the arm support can be decreased; therefore, the flexibility of motions of the arm support is improved, the manufacturing material is decreased, and the manufacturing difficulty is reduced.

Description

technical field [0001] The invention relates to the field of mechanical equipment, in particular to a tension beam, a boom made of the tension beam and a pump truck with the boom. Background technique [0002] The boom frame of the concrete pump truck belongs to the cantilever beam structure, which needs to be suspended horizontally during operation. The cantilever beam structure must bear a huge bending moment, and the neutral plane of the cantilever beam bears a huge tensile force. Therefore, it is necessary to use a thicker plate to bear the tensile stress to ensure the strength and rigidity of the boom. Therefore, the plates of existing booms are generally thicker, which not only increases the weight of the boom, reduces the flexibility of the boom, but also wastes materials and increases manufacturing difficulty. In addition, the weight of the jib itself further constitutes the load of the jib, and the thick plate jib structure will inevitably limit the overall design ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E04G21/04
Inventor 易小刚李东涂星张作良
Owner SANY HEAVY IND CO LTD (CN)
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