CN202031905U - Hydraulic ram - Google Patents
Hydraulic ram Download PDFInfo
- Publication number
- CN202031905U CN202031905U CN 201120048900 CN201120048900U CN202031905U CN 202031905 U CN202031905 U CN 202031905U CN 201120048900 CN201120048900 CN 201120048900 CN 201120048900 U CN201120048900 U CN 201120048900U CN 202031905 U CN202031905 U CN 202031905U
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- China
- Prior art keywords
- plunger rod
- hydraulic jack
- guide sleeve
- disposed
- oil drain
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- 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.)
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Abstract
The utility model embodiment discloses a hydraulic ram, which comprises: a cylinder with an oil inlet disposed on the bottom end; a guiding sleeve disposed on the inner side of the cylinder top; and a plunger rod disposed in the cylinder. at least two sealing rings are successively disposed between the plunger rod and the guiding sleeve along the plunger rod extension direction; at least one oil discharging channel in communication with the atmosphere is disposed on the guiding sleeve positioned between the sealing rings. The hydraulic ram provided in the utility model embodiment reduces the speed fluctuation of the plunger rod in the telescoping process, thereby increases the running speed stability of a slide block.
Description
Technical field
The utility model relates to hydraulic jack manufacturing technology field, more particularly, relates to a kind of isothermal forging hydraulic press hydraulic jack.
Background technique
At present, can realize in the isothermal forging liquid making press on the Domestic market that pressing speed is between 0.001～0.1mm/s and the hydraulic press of stable operation and few, because the isothermal forging hydraulic press is difficult to the stability of control slide block operation under the very slow situation of speed, the speed fluctuation ratio is bigger during the slide block operation, and this workpiece quality to isothermal forging produces very big influence.
Please refer to accompanying drawing 1-2, a kind of hydraulic jack of the prior art, comprise plunger rod 12, cylinder body 11, guide sleeve 13 and adpting flange 14, this hydraulic jack is installed on the crossbeam of hydraulic press, its adpting flange 14 is connected with slide block, feeds high pressure oil by the oil inlet hole on the cylinder body 11 111 in cylinder body 11, under the promotion of high pressure oil, plunger rod 12 is promoting slide block and is moving down, and then realizes the workpiece on the worktable is forged and pressed.
In the above-mentioned hydraulic jack, the pairing position of flexible end with plunger rod 12 on the cylinder body 11 is provided with guide sleeve 13, realizes sealing with stair ring 16, axle with stair ring 17 and YX seal ring 15 by axle between guide sleeve 13 and the plunger rod 12.In the process that plunger rod 12 stretches out, oil gas between plunger rod 12 and the guide sleeve 13 is compressed, high-pressure oil gas makes that the frictional force between YX seal ring 15 and the plunger rod 12 is increasing, cause stressed appearance fluctuation in plunger rod 12 movement processes, and then influence the motion speed of slide block, make that the motion speed fluctuation of slide block is very big, and then the quality of compacting workpiece when having reduced isothermal forging.
The model utility content
In view of this, the utility model provides a kind of hydraulic jack, with of the fluctuation of reduction plunger rod at the telescopic process medium velocity, and then the stability of raising running speed of sliding block.
In order to achieve the above object, the utility model embodiment provides following technological scheme:
A kind of hydraulic jack comprises:
Cylinder body, its bottom is provided with filler opening;
Be set in the guide sleeve in the top of described cylinder body;
Be arranged on the plunger rod in the described cylinder body, between described plunger rod and the described guide sleeve, be disposed with on the direction of stretching out along described plunger rod and be no less than two seal ring;
Position on the described guide sleeve between two described seal rings is provided with the oil drain canal that communicates with atmosphere.
Preferably, in the above-mentioned hydraulic jack, be disposed with first stair ring, second stair ring and YX seal ring on the direction of stretching out along described plunger rod.
Preferably, in the above-mentioned hydraulic jack, described oil drain canal is arranged between described second stair ring and the described YX seal ring.
Preferably, in the above-mentioned hydraulic jack, the position of described guide sleeve inwall between two seal rings is provided with circular groove, and described circular groove is connected with described oil drain canal.
Preferably, in the above-mentioned hydraulic jack, the sectional shape of described circular groove is semicircle, trapezoidal, square or rectangular.
Preferably, in the above-mentioned hydraulic jack, also comprise the rapid pipe joint on the outside port that is arranged on described oil drain canal.
Preferably, in the above-mentioned hydraulic jack, also comprise a plurality of guide rings that are arranged on the described guide sleeve inwall.
In the hydraulic jack that the utility model embodiment provides, position on the guide sleeve between two seal rings is provided with the oil drain canal that communicates with atmosphere, in the process that plunger rod stretches out, along with slide relative between plunger rod and the guide sleeve makes compressed high-pressure oil gas discharge by oil drain canal, discharged the pressure between plunger rod and the guide sleeve in time, and then reduced frictional force between plunger rod and the seal ring, reduce the speed fluctuation of plunger rod, and then improved the slide block traveling comfort.
Description of drawings
In order to be illustrated more clearly in the utility model embodiment or technological scheme of the prior art, to do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art below, apparently, accompanying drawing in describing below only is embodiments more of the present utility model, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is provided for the isothermal forging hydraulic press that provides in the prior art by the structural representation of hydraulic jack;
Fig. 2 is the enlarged diagram of A part among Fig. 1;
The isothermal forging hydraulic press that Fig. 3 provides for the utility model embodiment structural representation of hydraulic jack;
Fig. 4 is the enlarged diagram of B part among Fig. 3.
Embodiment
Below in conjunction with the accompanying drawing among the utility model embodiment, the technological scheme among the utility model embodiment is clearly and completely described, obviously, described embodiment only is a part of embodiment of the present utility model, rather than whole embodiments.Based on the embodiment in the utility model, the every other embodiment that those of ordinary skills are obtained under the prerequisite of not making creative work belongs to the scope of the utility model protection.
The utility model provides a kind of hydraulic jack, has reduced the speed fluctuation of plunger rod in telescopic process, and then has improved the stability of running speed of sliding block.
Please refer to accompanying drawing 3-4, the isothermal forging hydraulic press that Fig. 3 provides for the utility model embodiment structural representation of hydraulic jack, Fig. 4 are the enlarged diagram of B part among Fig. 3.
The hydraulic jack that the utility model embodiment provides comprises cylinder body 21, guide sleeve 23 and plunger rod 22, wherein:
The bottom of described cylinder body 21 is provided with filler opening 211, and high pressure oil enters into cylinder body 21 by filler opening 211, and then drive plunger rod 22 is stretched out;
Position on the guide sleeve 23 between two seal rings is provided with oil drain canal 231, and this oil drain canal 231 communicates with atmosphere.
In the hydraulic jack that the utility model embodiment provides, cylinder body 21 is arranged on the crossbeam of isothermal forging hydraulic press, the adpting flange 24 of plunger rod 22 ends is connected with slide block, and slide block is operation downwards under the effect of plunger rod 22, and then the workpiece that is placed on the worktable is forged and pressed.In the hydraulic jack that the utility model embodiment provides, position on the guide sleeve 23 between two seal rings is provided with the oil drain canal 231 that communicates with atmosphere, in the process that plunger rod 22 stretches out, oil gas between guide sleeve 23 and the plunger rod 22 is compressed, it has very high pressure, the high-pressure oil gas of this moment is discharged by oil drain canal 231, and then the oil-air pressure between release guide sleeve 23 and the plunger rod 22, avoided the high-pressure oil gas between guide sleeve 23 and the plunger rod 22 to cause the situation that frictional force increases between seal ring and the plunger rod 22, reduced the frictional force between seal ring and the plunger rod 22, thereby reduced the fluctuation of plunger rod 22 motion speed, and then reduced the speed fluctuation of slide block, improved the stability of slide block operation.
In the hydraulic jack that provides in the foregoing description, between plunger rod 22 and guide sleeve 23, be disposed with on the direction of stretching out along plunger rod 22 and be no less than two seal ring, adopt multiple-sealed circle to improve the sealing of whole hydraulic jack, preferred scheme, be disposed with the three seals circle on the direction of stretching out along described plunger rod 22, be respectively first stair ring 27, second stair ring 26 and YX seal ring 25.Stair ring has further reduced the frictional force between plunger rod 22 and the seal ring for low drag seal, and adopting YX seal ring 25 is the seal ring of high friction, has guaranteed the reliability of sealing.
In order further to optimize above-mentioned technological scheme, oil drain canal 231 is arranged between second stair ring 26 and the YX seal ring 25, adopt first stair ring 27 and second stair ring 26 to guarantee sealing between plunger rod 22 and the guide sleeve 23, oil drain canal 231 is arranged between second stair ring 26 and the YX seal ring 25 high-pressure oil gas is discharged, and has reduced the frictional force between YX seal ring 25 and the plunger rod 22 when having guaranteed sealing.
Oil drain canal 231 is used for plunger rod 22 is discharged at the high-pressure oil gas that the process that moves produces, so that reduce the frictional force between plunger rod 22 and each seal ring, guiding compiles for high-pressure oil gas being had better, the position of the inwall of above-mentioned guide sleeve 23 between two seal rings is provided with circular groove 232, circular groove 232 is connected with oil drain canal 231, in the process of work, high-pressure oil gas is easy to be pooled in the circular groove 232, and promptly discharges by oil drain canal 231.
In the hydraulic jack that provides among the utility model embodiment, circular groove 232 can be the groove of different shape, and for example the cross section of circular groove 232 can be semicircle, trapezoidal, square or rectangular, certainly, the shape that other can also be arranged is not limited to above-mentioned enumerate several.
In order further to optimize such scheme, also be provided with rapid pipe joint 28 on the outside port of above-mentioned oil drain canal 231, realized that oil drain canal 231 is connected quickly and easily with other pipeline.
In order to make plunger rod 22 more stable in the process that moves, the inwall of above-mentioned guide sleeve 23 is provided with a plurality of guide rings 29.
To the above-mentioned explanation of the disclosed embodiments, make related domain professional and technical personnel can realize or use the utility model.Multiple modification to these embodiments will be conspicuous concerning those skilled in the art, and defined herein General Principle can realize under the situation that does not break away from spirit or scope of the present utility model in other embodiments.Therefore, the utility model will can not be restricted to these embodiments shown in this article, but will meet and principle disclosed herein and features of novelty the wideest corresponding to scope.
Claims (7)
1. hydraulic jack comprises:
Cylinder body (21), its bottom are provided with filler opening (211);
Be set in the guide sleeve (23) in the top of described cylinder body (21);
Be arranged on the plunger rod (22) in the described cylinder body (21), between described plunger rod (22) and the described guide sleeve (23), be disposed with on the direction of stretching out along described plunger rod (22) and be no less than two seal ring;
It is characterized in that the position that described guide sleeve (23) is gone up between two described seal rings is provided with the oil drain canal (231) that communicates with atmosphere.
2. hydraulic jack according to claim 1 is characterized in that, is disposed with first stair ring (27), second stair ring (26) and YX seal ring (25) on the direction of stretching out along described plunger rod (22).
3. hydraulic jack according to claim 2 is characterized in that, described oil drain canal (231) is arranged between described second stair ring (26) and the described YX seal ring (25).
4. according to any described hydraulic jack among the claim 1-3, it is characterized in that the position of described guide sleeve (23) inwall between two seal rings is provided with circular groove (232), described circular groove (232) is connected with described oil drain canal (231).
5. hydraulic jack according to claim 4 is characterized in that, the sectional shape of described circular groove (232) is semicircle, trapezoidal, square or rectangular.
6. hydraulic jack according to claim 1 is characterized in that, also comprises the rapid pipe joint (28) on the outside port that is arranged on described oil drain canal (231).
7. hydraulic jack according to claim 1 is characterized in that, also comprises a plurality of guide rings (28) that are arranged on described guide sleeve (23) inwall.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120048900 CN202031905U (en) | 2011-02-25 | 2011-02-25 | Hydraulic ram |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120048900 CN202031905U (en) | 2011-02-25 | 2011-02-25 | Hydraulic ram |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202031905U true CN202031905U (en) | 2011-11-09 |
Family
ID=44894203
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201120048900 Expired - Fee Related CN202031905U (en) | 2011-02-25 | 2011-02-25 | Hydraulic ram |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202031905U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104373415A (en) * | 2014-10-27 | 2015-02-25 | 湖州环丰机械有限公司 | Hydraulic oil cylinder |
| CN107537965A (en) * | 2017-09-05 | 2018-01-05 | 南京国际船舶设备配件有限公司 | Slider of oil press backhaul cylinder component is used in the production of ship use intermediate speed machine air valve die-forging forming |
-
2011
- 2011-02-25 CN CN 201120048900 patent/CN202031905U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104373415A (en) * | 2014-10-27 | 2015-02-25 | 湖州环丰机械有限公司 | Hydraulic oil cylinder |
| CN104373415B (en) * | 2014-10-27 | 2016-09-07 | 湖州环丰机械有限公司 | A kind of hydraulic jack |
| CN107537965A (en) * | 2017-09-05 | 2018-01-05 | 南京国际船舶设备配件有限公司 | Slider of oil press backhaul cylinder component is used in the production of ship use intermediate speed machine air valve die-forging forming |
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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: 20111109 Termination date: 20190225 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |