CN219787311U - Bidirectional hydraulic stretcher - Google Patents
Bidirectional hydraulic stretcher Download PDFInfo
- Publication number
- CN219787311U CN219787311U CN202222856634.XU CN202222856634U CN219787311U CN 219787311 U CN219787311 U CN 219787311U CN 202222856634 U CN202222856634 U CN 202222856634U CN 219787311 U CN219787311 U CN 219787311U
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- China
- Prior art keywords
- hole
- section
- shaft
- end cover
- outer side
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- 230000002457 bidirectional effect Effects 0.000 title claims abstract description 8
- 239000003921 oil Substances 0.000 description 15
- 239000010720 hydraulic oil Substances 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Abstract
The utility model provides a bidirectional hydraulic stretcher, which comprises an inner sleeve, a cylinder body and an end cover; the inner side of the inner sleeve is provided with an internal thread, and the outer side of the inner sleeve comprises a first shaft section, a second shaft section and a third shaft section; the inner side of the cylinder body is provided with a first section of hole, a second section of hole and a threaded hole, and the end face of one side of the first section of hole is provided with a plurality of screw holes; the cylinder body is provided with a first oil hole leading to the first section hole from the outer side; the outer side of the end cover is provided with a step shaft, and a second oil hole is formed from the outer side of the end cover to the small-diameter shaft end face of the step shaft; the end cover is circumferentially provided with a plurality of screw counter bores on a large-diameter shaft of the step shaft; the inner side of the end cover is provided with a through hole; the hydraulic stretching machine has reasonable structure and scientific working mode, solves the problem that the hydraulic stretching machine in the prior art can only provide unidirectional tension, and provides a reasonable solution for occasions requiring both tension and thrust.
Description
Technical Field
The utility model relates to the field of hydraulic tools, in particular to a bidirectional hydraulic stretcher.
Background
The conventional hydraulic stretcher and the automatic oil return type hydraulic stretcher can only provide unidirectional pulling force. When the tension device is used, the tension device is screwed on the bolt or an extension part of the bolt, and the tension of the bolt is realized by other auxiliary parts.
However, when some bolts or shaft parts are used, the assembly or disassembly or the action of the inner side or outer side parts of the bolts or the shaft parts requires larger pushing force and pulling force, and the hydraulic stretcher with single pulling force obviously does not meet the requirements.
In view of this, we propose a bi-directional hydraulic tensioner that can provide both pushing and pulling forces.
Disclosure of Invention
In order to solve the technical problems, the utility model discloses a bidirectional hydraulic stretcher, and the technical scheme of the utility model is implemented as follows:
a bidirectional hydraulic stretcher comprises an inner sleeve, a cylinder body and an end cover;
the inner side of the inner sleeve is provided with an internal thread, and the outer side of the inner sleeve comprises a first shaft section, a second shaft section and a third shaft section;
the inner side of the cylinder body is provided with a first section of hole, a second section of hole and a threaded hole, and the end face of one side of the first section of hole is provided with a plurality of screw holes;
the cylinder body is provided with a first oil hole leading to the first section hole from the outer side;
the outer side of the end cover is provided with a step shaft, and a second oil hole is formed from the outer side of the end cover to the small-diameter shaft end face of the step shaft;
the end cover is circumferentially provided with a plurality of screw counter bores on a large-diameter shaft of the step shaft;
the inner side of the end cover is provided with a through hole;
the inner sleeve is arranged on the inner side of the cylinder body; the second shaft section is inserted into the second section hole, the third shaft section is inserted into the first section hole, and the first shaft section is inserted into the through hole; the step shaft is inserted into the first segment hole.
Preferably, the first section of bore, the second section of bore and the threaded bore are concentric.
By implementing the technical scheme of the utility model, the limitation that the hydraulic stretcher can only provide unidirectional tension in the prior art can be solved, and the technical effect of adapting to occasions requiring both tension and thrust can be realized by providing the bidirectional hydraulic stretcher.
Drawings
In order to more clearly illustrate the embodiments of the present utility model or the technical solutions of the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are only one embodiment of the present utility model, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.
Wherein like parts are designated by like reference numerals. It should be noted that the words "front", "back", "left", "right", "upper" and "lower" used in the following description refer to directions in the drawings, and the words "bottom" and "top", "inner" and "outer" refer to directions toward or away from, respectively, the geometric center of a particular component.
FIG. 1 is a schematic diagram of the assembly of a bi-directional hydraulic tensioner according to an embodiment;
FIG. 2 is a schematic view of an inner sleeve structure according to an embodiment;
FIG. 3 is a schematic diagram of a cylinder structure according to an embodiment;
FIG. 4 is a schematic diagram of an end cap structure according to an embodiment;
in the above drawings, each reference numeral indicates:
1, an inner sleeve;
1a, a first shaft section; 1b, a second shaft section; 1c, a third shaft section; 1d, internal threads;
2, a cylinder body;
2a, a first section of hole; 2b, a first oil hole; 2c, a second section of hole; 2d, a threaded hole; 2e, screw holes;
3, end covers;
3a, through holes; 3b, a second oil hole; 3c, a step shaft; and 3d, countersinking the screw.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
Examples
In a specific embodiment, as shown in fig. 1, 2, 3 and 4, a bi-directional hydraulic tensioner comprises an inner sleeve 1, a cylinder 2 and an end cap 3;
the inner side of the inner sleeve 1 is provided with an internal thread 1d, and the outer side of the inner sleeve comprises a first shaft section 1a, a second shaft section 1b and a third shaft section 1c;
the inner side of the cylinder body 2 is provided with a first section hole 2a, a second section hole 2c and a threaded hole 2d which are concentric, and the end face of one side of the first section hole 2a is provided with a plurality of threaded holes 2e;
the cylinder block 2 is provided with a first oil hole 2b which leads to the first-stage hole 2a from the outside;
the outer side of the end cover 3 is provided with a step shaft 3c, and a second oil hole 3b which extends from the outer side of the end cover 3 to the small-diameter shaft end face of the step shaft 3c is formed;
the end cover 3 is circumferentially provided with a plurality of screw counter bores 3d on a large-diameter shaft of the step shaft 3 c;
a through hole 3a is formed in the inner side of the end cover 3;
the inner sleeve 1 is arranged on the inner side of the cylinder body 2; the second shaft section 1b is inserted into the second section hole 2c, the third shaft section 1c is inserted into the first section hole 2a, and the first shaft section 1a is inserted into the through hole 3a; the stepped shaft 3c is inserted into the first-stage hole 2a. Screws pass through the screw holes 2e and the screw counter bores 3d to fix the end cover 3.
The mating surfaces are sealed with a seal.
The first oil hole 2b and the second oil hole 3b are used for injecting oil into oil cavities at two sides of the third shaft section 1c, so that pulling force or pushing force is generated.
When the cylinder is used, if pulling force and pushing force are required to be provided for the inner part of the inner part and the outer part which are concentrically arranged, the threaded hole 2d of the cylinder body 2 of the embodiment is connected with the fixed outer part; meanwhile, the internal thread 1d of the inner sleeve 1 is connected with an inner part which needs to act. At this time, hydraulic oil is injected from the first oil hole 2b, and a pulling force is generated to pull the inner part; hydraulic oil is injected from the second oil hole 3b, and a pushing force is generated to push the inner part.
On the contrary, if the tension and the pushing force are required to be provided for the outer part of the inner part and the outer part which are concentrically arranged, the threaded hole 2d of the cylinder body 2 of the embodiment is connected with the outer part which needs to act; at the same time, the internal thread 1d of the inner sleeve 1 is connected with the fixed inner part. At this time, hydraulic oil is injected from the first oil hole 2b, and thrust is generated to push the outer part; hydraulic oil is injected from the second oil hole 3b, and the outer part is pulled by the pulling thrust.
The hydraulic stretching machine has reasonable structure and scientific working mode, solves the problem that the hydraulic stretching machine in the prior art can only provide unidirectional tension, and provides a reasonable solution for occasions requiring both tension and thrust.
It should be noted that the above-mentioned embodiments are only preferred embodiments of the present utility model, and are not intended to limit the present utility model, and any modifications, equivalent substitutions, improvements, etc. within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.
Claims (2)
1. The bidirectional hydraulic stretcher is characterized by comprising an inner sleeve, a cylinder body and an end cover;
the inner side of the inner sleeve is provided with an internal thread, and the outer side of the inner sleeve comprises a first shaft section, a second shaft section and a third shaft section;
the inner side of the cylinder body is provided with a first section of hole, a second section of hole and a threaded hole, and the end face of one side of the first section of hole is provided with a plurality of screw holes;
the cylinder body is provided with a first oil hole leading to the first section hole from the outer side;
the outer side of the end cover is provided with a step shaft, and a second oil hole is formed from the outer side of the end cover to the small-diameter shaft end face of the step shaft;
the end cover is circumferentially provided with a plurality of screw counter bores on a large-diameter shaft of the step shaft;
the inner side of the end cover is provided with a through hole;
the inner sleeve is arranged on the inner side of the cylinder body; the second shaft section is inserted into the second section hole, the third shaft section is inserted into the first section hole, and the first shaft section is inserted into the through hole; the step shaft is inserted into the first segment hole.
2. The bi-directional hydraulic tensioner of claim 1 wherein the first bore, the second bore and the threaded bore are concentric.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222856634.XU CN219787311U (en) | 2022-10-28 | 2022-10-28 | Bidirectional hydraulic stretcher |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222856634.XU CN219787311U (en) | 2022-10-28 | 2022-10-28 | Bidirectional hydraulic stretcher |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219787311U true CN219787311U (en) | 2023-10-03 |
Family
ID=88156225
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222856634.XU Active CN219787311U (en) | 2022-10-28 | 2022-10-28 | Bidirectional hydraulic stretcher |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219787311U (en) |
-
2022
- 2022-10-28 CN CN202222856634.XU patent/CN219787311U/en active Active
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| GR01 | Patent grant | ||
| GR01 | Patent grant |