Force-boosting type hydraulic bolt tensioning jack
A technology of hydraulic bolts and tensioners, which is applied in metal processing, metal processing equipment, manufacturing tools, etc., can solve the problems of not conforming to the optimization design concept, unfavorable material saving, and increasing tensile capacity, etc., to achieve strong practicability, Simple structural improvement and the effect of increasing the maximum tensile force
Inactive Publication Date: 2012-02-08
德阳市西川机械技术研究所
View PDF0 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
When designing a hydraulic bolt tensioner, the parameters such as the cylinder area of the hydraulic bolt tensioner are usually designed according to the size of the required pre-tightening force. However, due to the characteristics of the traditional structure, the current hydraulic bolt tensioner is often large in size. It is not conducive to saving materials, saving costs, increasing tensile capacity, and does not conform to the concept of optimal design
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0012] All features disclosed in this specification, or steps in all methods or processes disclosed, may be combined in any manner, except for mutually exclusive features and / or steps.
[0013] Any feature disclosed in this specification (including any appended claims, abstract and drawings), unless expressly stated otherwise, may be replaced by alternative features which are equivalent or serve a similar purpose. That is, unless expressly stated otherwise, each feature is one example only of a series of equivalent or similar features.
[0014] Such as figure 1 As shown, a power-increasing hydraulic bolt tensioner of the present invention includes an oil cylinder 1 and a piston 2. The annular gap formed by the cooperation of the oil cylinder 1 and the piston 2 is an oil chamber 3, and the mating surface of the oil cylinder 1 and the piston 2 is provided with a The sealing ring 12 is provided with two oil inlet holes 11 leading to the oil chamber 3 on the piston 2, the small e...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The invention discloses a force-boosting type hydraulic bolt tensioning jack, which comprises an oil cylinder and a piston, wherein a threaded hole is axially arranged at a small end of the piston; an unthreaded hole coaxial with the threaded hole is arranged at a large end of the piston; the diameter of the unthreaded hole is smaller than that of the threaded hole; a transitional surface between the unthreaded hole and the threaded hole is an inclined plane; an inclined angle of the inclined plane is 15-30 degrees; the inclined plane occupies one section of the outer surface of the inner wall of an oil cavity; and the thickness of each position on the inner wall of the oil cavity is identical. According to the force-boosting type hydraulic bolt tensioning jack disclosed by the invention, the diameter of the unthreaded hole at the large end of the piston is designed to be smaller than the diameter of the threaded hole, so that a dimensional space which can be used for reducing the inside diameter of the oil cavity so as to increase the area of the oil cavity is provided under the condition that the outline dimension of the whole hydraulic bolt tensioning jack is limited, and thus the outside diameter of the oil cavity cannot be increased, and further the maximum tensioning force of the hydraulic bolt tensioning jack is effectively improved; in addition, the transitional surface between the unthreaded hole and the threaded hole is designed into the inclined plane and the inclined angle of the inclined plane is 15-30 degrees, so that the inclination and uniform thickness design of the inner wall of the oil cavity can be realized and the effect of equal strength optimization design is achieved.
Description
technical field [0001] The invention relates to a bolt tensioner, in particular to a hydraulic bolt tensioner. Background technique [0002] The hydraulic bolt tensioner is mainly used to tighten large-diameter bolts and nuts that need to bear a large force, which not only reduces the labor intensity of the operator, but also reduces the assembly time, so it is widely used. When designing a hydraulic bolt tensioner, the parameters such as the cylinder area of the hydraulic bolt tensioner are usually designed according to the size of the required pre-tightening force. However, due to the characteristics of the traditional structure, the current hydraulic bolt tensioner is often large in size. It is not conducive to saving materials, saving costs, increasing tensile capacity, and does not conform to the concept of optimal design. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a booster hydraulic bolt tensioner ...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Applications(China)
IPC IPC(8): B23P19/06
Inventor 劳光汉
Owner 德阳市西川机械技术研究所