CN204646849U - Hydraulic jack - Google Patents
Hydraulic jack Download PDFInfo
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- CN204646849U CN204646849U CN201520317357.2U CN201520317357U CN204646849U CN 204646849 U CN204646849 U CN 204646849U CN 201520317357 U CN201520317357 U CN 201520317357U CN 204646849 U CN204646849 U CN 204646849U
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- hydraulic jack
- piston rod
- piston
- outer end
- cylinder body
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Abstract
The utility model relates to a kind of hydraulic jack, comprise cylinder body, the two ends of cylinder body are closed by guide sleeve and cylinder bottom head, piston is slidably arranged in cylinder body, the inner of piston rod is fixedly connected with piston, and the outer end of piston rod is protruding through the guide hole of guide sleeve, it is characterized in that adjustment sleeve is sleeved on the outer end of piston rod, on adjustment sleeve, inversion symmetry is provided with two spiral grooves, and adjustment sleeve is fixed on the outer end of described piston rod by screw radially across described spiral groove; When piston rod bounces back to limit position, between piston and cylinder bottom head, still remain with spacing.The utility model is simple and compact for structure, low cost of manufacture, the stroke that two the spiral grooves utilizing the inversion symmetry on adjustment sleeve to arrange realize hydraulic jack is adjustable, reduce the required precision of spacing between the supporting member for hydraulic jack, and facilitate installation and the maintenance of hydraulic jack, facilitate the design of hydraulic jack, production and use.
Description
Technical field
The utility model relates to technical field of engineering machinery, especially relates to a kind of hydraulic jack for engineering machinery.
Background technique
For many years, the economic fast development of China, real estate, infrastructure etc. increase day by day for the demand of all kinds of engineering machinery.Component the most frequently used in all kinds of engineering machinery is all kinds of hydraulic jack, hydraulic jack refers to the special device assembly that hydraulic energy can be converted to mechanical energy-straight line motion dressed up by piston rod, piston, guide sleeve, cylinder barrel, cylinder cap and all kinds of sealing group, for controlling the various uses such as lifting of Vehicular turn, elongated boom in engineering machinery.Stroke and the mounting point size of usual hydraulic jack are changeless, for hydraulic jack supporting member between size be also fixing, in order to ensure the stroke of hydraulic jack accurately and guarantee the installation of hydraulic jack, ensure the dimensional accuracy between supporting member in the production process needed, this design for engineering machinery series products, production and use bring certain difficulty.
Model utility content
The applicant, for above-mentioned problem, is studied improvement, provides a kind of hydraulic jack, and for engineering machinery series products, stroke is adjustable, facilitates the design of hydraulic jack, production and use.
In order to solve the problems of the technologies described above, the utility model adopts following technological scheme:
A kind of hydraulic jack, comprise cylinder body, the two ends of described cylinder body are closed by guide sleeve and cylinder bottom head, piston is slidably arranged in described cylinder body, the inner of piston rod is fixedly connected with described piston, the outer end of piston rod is protruding through the guide hole of described guide sleeve, the inner chamber of described cylinder body is divided into rod chamber and rodless cavity by described piston, adjustment sleeve is sleeved on the outer end of described piston rod, on described adjustment sleeve, inversion symmetry is provided with two spiral grooves, and described adjustment sleeve is fixed on the outer end of described piston rod by screw radially across described spiral groove; When described piston rod bounces back to limit position, between described piston and described cylinder bottom head, still remain with spacing.
Further:
The front end of described piston rod outer end is provided with bulb, and supporting disk is connected described bulb with gland sphere, and described cylinder bottom head is provided with hinging hole.
The lead angle of described spiral groove is between 15 ° ~ 45 °.
The axial distance at the spacing between described piston with described cylinder bottom head and described spiral groove two ends is identical.
Technique effect of the present utility model is:
A kind of hydraulic jack disclosed in the utility model, simple and compact for structure, low cost of manufacture, the stroke that two the spiral grooves utilizing the inversion symmetry on adjustment sleeve to arrange realize hydraulic jack is adjustable, reduce the required precision of spacing between the supporting member for hydraulic jack, and facilitate installation and the maintenance of hydraulic jack, facilitate the design of hydraulic jack, production and use.
Accompanying drawing explanation
Fig. 1 is the utility model structural representation.
Fig. 2 is that the A of Fig. 1 is to partial enlarged drawing.
Embodiment
Below in conjunction with accompanying drawing, embodiment of the present utility model is described in further detail.
As shown in Figure 1, 2, the utility model comprises cylinder body 6, the two ends of cylinder body 6 are closed by guide sleeve 4 and cylinder bottom head 8, piston 7 is slidably arranged in cylinder body 6, the inner of piston rod 5 is fixedly connected with piston 7, the outer end of piston rod 5 is protruding through the guide hole of guide sleeve 4, the inner chamber of cylinder body 6 is divided into rod chamber 601 and rodless cavity 602 by piston 7, the front end of piston rod 5 outer end is provided with bulb 10, supporting disk 1 and gland 2 sphere connecting ball head 10, cylinder bottom head 8 is provided with hinging hole 801, and the hinging hole 801 on supporting disk 1 and cylinder bottom head 8 is connected with the supporting member in engineering machinery.Adjustment sleeve 3 is sleeved on the outer end of piston rod 5, on adjustment sleeve 3, inversion symmetry is provided with two spiral grooves 9, adjustment sleeve 3 is fixed on the outer end of piston rod 5 by screw 11 radially across spiral groove 9, the lead angle B of usual spiral groove 9 is between 15 ° ~ 45 °, in the present embodiment, the lead angle B of spiral groove 9 at 18 °, the size of the stroke that the large I of lead angle B regulates as required and determining.When piston rod 5 bounces back to limit position; piston 7 and cylinder bottom head 8 still remain with space D in rodless cavity 602; there is this space D and just can carry out adjustment stroke by the position adjusting adjustment sleeve 3; usual piston 7 is identical with the axial distance at the space D between cylinder bottom head 8 and spiral groove 9 two ends, or space D between piston 7 and cylinder bottom head 8 is slightly larger than the axial distance at spiral groove 9 two ends.
When needs adjustment stroke, unclamp screw 11, rotate adjustment sleeve 3, make adjustment sleeve 3 move a distance to the left or to the right in the axial direction, thus realize the adjustment to stroke.That is, the utility model realizes the adjustment to stroke by the minimum length of installation adjusting hydraulic jack, can reduce the required precision of spacing between the supporting member for hydraulic jack, and facilitate installation and the maintenance of hydraulic jack.
Claims (4)
1. a hydraulic jack, comprise cylinder body, the two ends of described cylinder body are closed by guide sleeve and cylinder bottom head, piston is slidably arranged in described cylinder body, the inner of piston rod is fixedly connected with described piston, the outer end of piston rod is protruding through the guide hole of described guide sleeve, the inner chamber of described cylinder body is divided into rod chamber and rodless cavity by described piston, it is characterized in that: adjustment sleeve is sleeved on the outer end of described piston rod, on described adjustment sleeve, inversion symmetry is provided with two spiral grooves, and described adjustment sleeve is fixed on the outer end of described piston rod by screw radially across described spiral groove; When described piston rod bounces back to limit position, between described piston and described cylinder bottom head, still remain with spacing.
2. according to hydraulic jack according to claim 1, it is characterized in that: the front end of described piston rod outer end is provided with bulb, and supporting disk is connected described bulb with gland sphere, and described cylinder bottom head is provided with hinging hole.
3. according to hydraulic jack according to claim 1, it is characterized in that: the lead angle of described spiral groove is between 15 ° ~ 45 °.
4. according to hydraulic jack according to claim 1, it is characterized in that: the axial distance at the spacing between described piston with described cylinder bottom head and described spiral groove two ends is identical.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520317357.2U CN204646849U (en) | 2015-05-18 | 2015-05-18 | Hydraulic jack |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520317357.2U CN204646849U (en) | 2015-05-18 | 2015-05-18 | Hydraulic jack |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204646849U true CN204646849U (en) | 2015-09-16 |
Family
ID=54099608
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520317357.2U Active CN204646849U (en) | 2015-05-18 | 2015-05-18 | Hydraulic jack |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204646849U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106979187A (en) * | 2017-04-26 | 2017-07-25 | 西安电子工程研究所 | A kind of hydraulic cylinder for being used to support |
-
2015
- 2015-05-18 CN CN201520317357.2U patent/CN204646849U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106979187A (en) * | 2017-04-26 | 2017-07-25 | 西安电子工程研究所 | A kind of hydraulic cylinder for being used to support |
| CN106979187B (en) * | 2017-04-26 | 2018-06-01 | 西安电子工程研究所 | A kind of hydraulic cylinder being used to support |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |