CN205013439U - Long stroke hydraulic cylinder rotational lock - Google Patents
Long stroke hydraulic cylinder rotational lock Download PDFInfo
- Publication number
- CN205013439U CN205013439U CN201520730155.0U CN201520730155U CN205013439U CN 205013439 U CN205013439 U CN 205013439U CN 201520730155 U CN201520730155 U CN 201520730155U CN 205013439 U CN205013439 U CN 205013439U
- Authority
- CN
- China
- Prior art keywords
- piston rod
- rotation device
- card key
- hydraulic jack
- guide rod
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model relates to a long stroke hydraulic cylinder rotational lock, including cylinder body, piston rod and cylinder bottom, cylinder bottom fixed mounting is equipped with in the cylinder body and prevents that the piston rod from rotating and having the direction rotational lock of guide effect in cylinder body one end. The utility model discloses a long stroke hydraulic cylinder rotational lock has good preventing changes the function, prevents changeing the good reliability, and rotational lock operates steadily, and simple structure, processing be simple, be applicable to long stroke hydraulic cylinder.
Description
Technical field
The utility model relates to technical field of hydraulic oil cylinder, especially relates to a kind of Long travel hydraulic jack anti-rotation device.
Background technique
The anti-rotation device of existing hydraulic jack, rely on piston rod inner to place a solid eccentric guide rod to realize anti-rotation, this anti-rotation device comprises piston rod and guide rod, anti-rotating function is played by guide rod confined piston bar, and two shortcomings that such anti-rotation device exists: one side is elongate rod so have certain amount of deflection due to guide rod, so stroke can not be long.On the other hand, on piston rod, processing slim hole machined difficulty is larger.
Model utility content
The technical problems to be solved in the utility model is: in order to overcome in prior art rely on piston rod inner to place method that a solid eccentric guide rod realizes anti-rotation there is stroke can not processing slim hole machined difficulty is larger on long and piston rod problem, a kind of Long travel hydraulic jack anti-rotation device is provided.
The utility model solves the technological scheme that its technical problem adopts: a kind of Long travel hydraulic jack anti-rotation device, comprise cylinder body, piston rod and cylinder bottom, described cylinder bottom is fixedly mounted on described cylinder body one end, is provided with and prevents piston rod rotation and the guiding anti-rotation device with leading role in described cylinder body.
Further, described guiding anti-rotation device comprises the guide rod with guiding groove, the length direction of described guiding groove and the centerline axis parallel of guide rod, it is interior and vertical with described cylinder bottom that described guide rod is fixedly mounted on described cylinder body, described piston rod is installed with card key, and described card key is slidably mounted in described guiding groove.
Further, in order to reduce the volume of hydraulic jack, one end of described piston rod is provided with the blind hole coaxial with piston rod, and the described piston rod described guide rod that is slidably located in is outside, described card key is fixedly mounted on the inner peripheral surface of described piston rod, and described card key is slidably mounted in described guiding groove.
Further, for improving reliability and the stationarity of hydraulic jack anti-rotation device, described guide rod is coaxial with described piston rod.
Further, in order to more firmly install card key, the internal surface of described piston rod has mounting groove, and the cross section of described mounting groove is identical with the cross section of described card key, and described card key is fixedly mounted in described mounting groove.
Further, described card key is provided with the tapped hole with counter sink, and described card key is fixedly connected with described mounting groove by screw.
Further, in order to alleviate the gross weight of hydraulic jack, described guide rod is hollow structure.
The utility model arranges card key on the piston rod, arranges guiding groove on the guide bar, and card key is slidably mounted in guiding groove, by the constraint of guiding groove and card key, thus plays the effect preventing piston rod rotation.Because the guiding anti-rotation device in hydraulic jack retrains card key by guiding groove, have the function preventing piston rod rotation, therefore can ensure that hydraulic jack position is reliable, and structure is simple, processing is simple, is applicable to Long travel.
The beneficial effects of the utility model are: Long travel hydraulic jack anti-rotation device of the present utility model has good anti-rotating function, anti-rotation good reliability, and anti-rotation device operates steadily, and structure is simple, processing is simple, be applicable to Long travel hydraulic jack.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the utility model is further illustrated.
Fig. 1 is two-dimentional partial sectional view of the present utility model;
Fig. 2 is the enlarged view at A place in the utility model Fig. 1.
In figure: 1. cylinder body, 2. piston rod, 3. cylinder bottom, 4. guiding groove, 5. guide rod, 6. card key, 7. screw.
Embodiment
The utility model is described in more detail by reference to the accompanying drawings now.These accompanying drawings are the schematic diagram of simplification, only basic structure of the present utility model are described in a schematic way, and therefore it only shows the formation relevant with the utility model.
A kind of Long travel hydraulic jack anti-rotation device as shown in Figure 1-2, comprise cylinder body 1, piston rod 2 and cylinder bottom 3, cylinder bottom 3 is fixedly mounted on cylinder body 1 one end, be provided with in cylinder body 1 and prevent piston rod 2 from rotating and the guiding anti-rotation device with leading role, guiding anti-rotation device comprises the guide rod 5 with guiding groove 4, the length direction of guiding groove 4 and the centerline axis parallel of guide rod 5, it is interior and vertical with cylinder bottom 3 that guide rod 5 is fixedly mounted on cylinder body 1, one end of piston rod 2 is provided with the blind hole coaxial with piston rod 2, piston rod 2 guide rod 5 that is slidably located in is outside, for improving reliability and the stationarity of hydraulic jack anti-rotation device, guide rod 5 is coaxial with piston rod 2.The internal surface of piston rod 2 has mounting groove, and the cross section of mounting groove is identical with the cross section of card key 6, and card key 6 is provided with the tapped hole with counter sink, and card key 6 is fixedly connected with mounting groove by screw 7, and card key 6 is slidably mounted in guiding groove 4.In order to alleviate the gross weight of hydraulic jack, guide rod 5 is hollow structure.
The utility model arranges card key 6 on piston rod 2, and guide rod 5 arranges guiding groove 4, and card key 6 is slidably mounted in guiding groove 4, by the constraint of guiding groove 4 with card key 6, thus plays the effect preventing piston rod 2 from rotating.Because the guiding anti-rotation device in hydraulic jack retrains card key 6 by guiding groove 4, have the function preventing piston rod 2 from rotating, therefore can ensure that hydraulic jack position is reliable, and structure is simple, processing is simple, is applicable to Long travel.
With above-mentioned according to desirable embodiment of the present utility model for enlightenment, by above-mentioned description, relevant staff in the scope not departing from this model utility technological thought, can carry out various change and amendment completely.The technical scope of this model utility is not limited to the content on specification, must determine its technical scope according to right.
Claims (7)
1. a Long travel hydraulic jack anti-rotation device, comprise cylinder body (1), piston rod (2) and cylinder bottom (3), described cylinder bottom (3) is fixedly mounted on described cylinder body (1) one end, it is characterized in that: be provided with in described cylinder body (1) and prevent piston rod (2) from rotating and have the guiding anti-rotation device of leading role.
2. Long travel hydraulic jack anti-rotation device as claimed in claim 1, it is characterized in that: described guiding anti-rotation device comprises the guide rod (5) with guiding groove (4), the length direction of described guiding groove (4) and the centerline axis parallel of guide rod (5), it is interior and vertical with described cylinder bottom (3) that described guide rod (5) is fixedly mounted on described cylinder body (1), described piston rod (2) is installed with card key (6), described card key (6) is slidably mounted in described guiding groove (4).
3. Long travel hydraulic jack anti-rotation device as claimed in claim 1, it is characterized in that: one end of described piston rod (2) is provided with the blind hole coaxial with piston rod (2), described piston rod (2) the described guide rod (5) that is slidably located in is outside, described card key (6) is fixedly mounted on the inner peripheral surface of described piston rod (2), and described card key (6) is slidably mounted in described guiding groove (4).
4. Long travel hydraulic jack anti-rotation device as claimed in claim 3, is characterized in that: described guide rod (5) is coaxial with described piston rod (2).
5. Long travel hydraulic jack anti-rotation device as claimed in claim 3, it is characterized in that: the internal surface of described piston rod (2) has mounting groove, the cross section of described mounting groove is identical with the cross section of described card key (6), and described card key (6) is fixedly mounted in described mounting groove.
6. Long travel hydraulic jack anti-rotation device as claimed in claim 5, it is characterized in that: described card key (6) is provided with the tapped hole with counter sink, described card key (6) is fixedly connected with described mounting groove by screw (7).
7. Long travel hydraulic jack anti-rotation device as claimed in claim 2, is characterized in that: described guide rod (5) is hollow structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520730155.0U CN205013439U (en) | 2015-09-18 | 2015-09-18 | Long stroke hydraulic cylinder rotational lock |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520730155.0U CN205013439U (en) | 2015-09-18 | 2015-09-18 | Long stroke hydraulic cylinder rotational lock |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205013439U true CN205013439U (en) | 2016-02-03 |
Family
ID=55212048
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520730155.0U Expired - Fee Related CN205013439U (en) | 2015-09-18 | 2015-09-18 | Long stroke hydraulic cylinder rotational lock |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205013439U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105114395A (en) * | 2015-09-18 | 2015-12-02 | 常州液压成套设备厂有限公司 | Long-stroke hydraulic oil cylinder rotation preventing device |
-
2015
- 2015-09-18 CN CN201520730155.0U patent/CN205013439U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105114395A (en) * | 2015-09-18 | 2015-12-02 | 常州液压成套设备厂有限公司 | Long-stroke hydraulic oil cylinder rotation preventing device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160203 Termination date: 20180918 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |