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Portable pre-stressed tensioning jack

A tension jack and prestressing technology, applied in the direction of lifting devices, etc., can solve the problems of inconvenient carrying and consumption of industrial energy, and achieve the effects of simple processing, steel saving and easy portability

Inactive Publication Date: 2013-11-13
广西国森机械有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a portable prestressed tension jack, which can solve the problems of inconvenient portability and the need to consume industrial energy in the jacks used for small tonnage prestressed tension construction in the prior art

Method used

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  • Portable pre-stressed tensioning jack
  • Portable pre-stressed tensioning jack
  • Portable pre-stressed tensioning jack

Examples

Experimental program
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Embodiment Construction

[0015] The present invention will be described in further detail below in conjunction with accompanying drawing embodiment:

[0016] figure 1 and figure 2 The shown portable prestressed tension jack mainly includes a fixed part and a rotating part; the fixed part includes a base 11 and a fixed nut 4, and the base 11 and the fixed nut 4 are connected and fixed by a plurality of connecting rods 6, and the middle part of the base 11 is installed with Piercing sleeve 8, the piercing sleeve 8 is arranged between the base 11 and the fixed nut 4, a section of the inner cavity of the piercing sleeve 8 is a taper hole, the small end of the taper hole is far away from the base 11, and a tool is clamped in the taper hole The clip 7 and the tool clip 7 can be replaced according to the specifications of different types of steel strands on the construction site. The inner cavity of the bushing 8 is equipped with a spring 9 that presses the big end of the tool clip 7, and the spring 9 is c...

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Abstract

The invention discloses a portable pre-stressed tensioning jack, which relates to the technical field of pre-stressed tensioning construction. The portable pre-stressed tensioning jack comprises a run-through sleeve which is connected to a pedestal, wherein tool clamping pieces are clamped in the run-through sleeve; the small ends of the tool clamping pieces are close to the other end of the run-through sleeve; a spring for pressing the tool clamping pieces is arranged in the run-through sleeve and is butted against a pressing nut connected to the pedestal; the pedestal is connected with a fixing nut through a plurality of connecting rods; the fixing nut is in threaded connection with a run-through screw; an ejection sleeve which faces the tool clamping pieces is embedded in one end of the run-through screw; the other end of the run-through screw is connected with a supporting barrel; a movable ejection head which extends out of the barrel is inserted in the supporting barrel; a bearing is arranged between the side wall of the movable ejection head and the inner wall of the supporting barrel; and the movable ejection head and the supporting barrel are provided with through holes for allowing a pre-stressed steel strand to penetrate. Compared with the prior art, the portable pre-stressed tensioning jack has the advantages of simple structure, convenience in carrying, and safety, easiness and convenience in use and is suitable for the field of tensioning of small-tonnage steel strands, and no industrial energy is consumed during tensioning construction.

Description

technical field [0001] The invention relates to the technical field of prestressed tension construction, in particular to a prestressed tension jack. Background technique [0002] The jacks used in the field of prestressed tensioning construction technology are all special hydraulic jacks that must be used in conjunction with oil pumps. An existing special hydraulic jack for prestressed tensioning includes oil cylinders, hollow pistons, bushings and tool anchors. The bushing is connected to one end of the cylinder, and the hollow piston is set between the cylinder and the bushing and protrudes from the other end of the cylinder. The tool anchor installed on the extended end of the piston includes a tool anchor plate and a cone placed on the tool anchor plate. The tool clip in the hole, when the prestressed beam is tensioned, when the oil pump supplies oil to the oil cylinder, the piston will move relative to the oil cylinder under the pressure of the oil, so that the prestre...

Claims

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Application Information

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IPC IPC(8): B66F3/08
Inventor 张文烽覃文章吴蔚
Owner 广西国森机械有限公司
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