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
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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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