Prestress reinforced boom, prestress reinforced support leg and pump truck

A pre-tightening force and boom technology, applied in vehicle maintenance, transportation and packaging, lifting vehicle accessories, etc., can solve the problems of difficult manufacturing, inflexible movements, heavy weight, etc., to reduce costs and manufacturing difficulties, reduce Production cost, the effect of improving stress

Inactive Publication Date: 2012-07-25
SANY HEAVY IND CO LTD (CN)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] 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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  • Prestress reinforced boom, prestress reinforced support leg and pump truck
  • Prestress reinforced boom, prestress reinforced support leg and pump truck
  • Prestress reinforced boom, prestress reinforced support leg and pump truck

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0116] Such as figure 1 , figure 2 and image 3 As shown, two fixing seats 4 are respectively arranged at the two ends below the upper plate 11 of the jib body 1, and the cable 2 is arranged between the two fixing seats 4, and a certain preload is set when the cable 2 is installed. force.

[0117] Two supporting shafts 41 are respectively arranged on the two fixing bases 4 , and the drag cable 2 is arranged on the two supporting shafts 41 .

Embodiment 2

[0119] Such as Figure 4 , Figure 5 and image 3 As shown, two fixing seats 4 are respectively arranged at the two ends above the upper plate 11 of the jib body 1, and the cable 2 is arranged between the two fixing seats 4, and a certain pre-tightening force is set when the cable 2 is installed. , and a tensioning device 3 is also provided on the cable 2, which can easily adjust the pre-tightening force on the cable 2.

[0120] Supporting shafts 41 are respectively arranged on the two fixing bases 4 , and the drag cables 2 are arranged on the two supporting shafts 41 .

Embodiment 3

[0122] Such as Figure 7 and image 3 As shown, two fixing seats 4 are respectively provided at both ends of the inner surface of the side plate 13 of the jib body 1, and the cable 2 is arranged between the two fixing seats 4, and passes through the upper plate 11, and is installed A certain pre-tightening force is set during the dragline 2, and a tensioning device 3 is arranged on the dragline 2, so that the pre-tightening force on the dragline 2 can be adjusted conveniently. The tensioning device 3 is as Figure 6 Screw tensioner shown.

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PUM

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Abstract

The invention provides a prestress reinforced boom and a prestress reinforced support leg. Each of boom segments of the boom and leg beams of the support leg comprises one or a plurality of cables disposed on a boom segment body or leg beam body. Each cable is disposed on a tensioned area or severely stressed area of the boom segment body or leg beam body lengthwise along the boom segment body or leg beam body. The cables are prestressed. The invention further provides a pump truck, which comprises the prestress reinforced boom and/or the prestress reinforced support leg. According to the technical scheme, the carrying capacity of the boom and the support leg can be improved, the thickness of plates can be reduced while the length and the carrying capacity of the boom and the support leg are guaranteed, and accordingly, the action flexibility of the boom and the support leg is improved, mechanical properties of various new materials can be given to full play, manufacturing cost can be reduced, and manufacturing difficulty can be reduced.

Description

technical field [0001] The invention relates to the field of mechanical equipment, in particular to a pre-tightening force reinforced arm frame, a support leg, and a pump truck with the pre-tightening force reinforced arm frame and / or support legs. 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 center 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...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E04G21/04B60S9/04
Inventor 易小刚李东涂星张作良
Owner SANY HEAVY IND CO LTD (CN)
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