CN201512385U - Jack - Google Patents
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- Publication number
- CN201512385U CN201512385U CN200920223729XU CN200920223729U CN201512385U CN 201512385 U CN201512385 U CN 201512385U CN 200920223729X U CN200920223729X U CN 200920223729XU CN 200920223729 U CN200920223729 U CN 200920223729U CN 201512385 U CN201512385 U CN 201512385U
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- piston rod
- piston
- jack
- cylinder body
- oilhole
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Abstract
A jack comprises a cylinder body, a piston rod and a piston, wherein the piston rod is a hollow cavity structure, a second cylinder whose one end is open is arranged in the piston rod, the piston rod penetrates through the two ends of the cylinder, a second piston rod and a second piston are arranged in the piston rod, the piston is fixed in the middle of the piston rod, the two ends of the cylinder are respectively provided with a first oil hole and a second oil hole, the two ends of the piston rod are respectively provided with a third oil hole and a fourth oil hole, the second piston is fixed on one end of the second piston rod, and the other end of the second piston rod extends out of the open end of the second cylinder. The piston rod with the cavity is adopted in the jack, and is used as an inner cylinder, and the second piston rod is arranged in the piston rod, therefore, the two piston rods of the jack are driven towards two directions, thereby forming a jack with double direction effects, increasing the action distance of the whole piston rod, enlarging the magnification ratio of the jack, and keeping the structure of the jack more compact.
Description
Technical field:
The utility model relates to the hydraulic pressure push unit, and particularly a kind of jack can realize that under the hydraulic oil effect both direction drives.
Background technology:
In the existing technology, hydraulic jack is merely able to realize folk prescription usually to the driving operation, and magnification ratio is little, thus in needs two-way operation and big magnification ratio, used jack structure complexity, assembly is more, uses very inconvenient.Particularly be directed to the hydraulic support that uses in the mining, between two filling supports that front and back are vertically arranged, often need former and later two direction traversing carriages, and bigger flexible step pitch difficulty relatively often.
The utility model content:
The purpose of this utility model is to provide a kind of jack, described this jack to solve in the prior art jack can only folk prescription to driving, and the little technical matters of magnification ratio.
The purpose of this utility model is achieved through the following technical solutions: comprise cylinder body, piston rod and piston, wherein, described piston rod is the cavity body structure of hollow, be provided with second cylinder body of an end opening in the piston rod, this piston rod runs through the two ends of cylinder body, the cylinder body two ends are provided with end cap, in piston rod, also be provided with second piston rod and second piston, piston is fixed in the middle part of piston rod, the two ends of cylinder body are respectively equipped with first oilhole and second oilhole, the two ends of piston rod are respectively equipped with the 3rd oilhole and the 4th oilhole, second piston is fixed in an end of second piston rod, the other end of second piston rod stretches out from the open end of second cylinder body, and the opening part of second cylinder body is provided with another end cap.
Second piston is fixed in an end of second piston rod.
Be provided with sealing member between described cylinder body two ends and the end cap.
Be provided with sealing member between the open end of described piston rod and another end cap.
Principle of work of the present utility model is: when needing piston rod to stretch out, liquid enters from second oilhole of cylinder body right-hand member, flows in the oil pocket that right end cap, piston right-hand member and piston rod by the inwall of cylinder body, cylinder body constitute, and promotes piston rod and stretches out; When needing piston rod to regain, liquid enters from first oilhole of cylinder body left end, flows in the oil pocket that left end cap, piston left end and piston rod by the inwall of cylinder body, cylinder body constitute, and piston rod is regained.When needing second piston rod to stretch out, liquid enters from the 3rd oilhole of piston rod left end, flows in the oil pocket that is made of the piston rod inwall and the second piston left end, promotes second piston rod and stretches out; When needing second piston rod to regain, liquid enters from the 4th oilhole of piston rod right-hand member, flows in the oil pocket that is made of piston rod inwall, the second piston right-hand member and second piston rod, and right push rod is regained.
The utility model is compared with prior art, and its effect is actively with tangible.The utility model adopts the piston rod that has cavity in jack, this piston rod is provided with second piston rod as the internal layer cylinder body in piston rod, can form the beidirectional jack so that two piston rods of this jack drive to both direction respectively; When two piston rods all when same direction drives, the ranging coverage of whole piston rod increases, and has increased the magnification ratio of this jack, makes jack structure compacter.Second piston is fixed in an end of second piston rod, can increase the magnification ratio of jack.
Description of drawings:
Fig. 1 is the structural representation of the utility model jack first embodiment.
Embodiment 1:
As shown in Figure 1, described jack, comprise cylinder body 1, piston rod 4 and piston 2, wherein, described piston rod 4 is the cavity body structure of hollow, be provided with second cylinder body of right-end openings in the piston rod 4, this piston rod 4 runs through the two ends of cylinder body 1, cylinder body 1 two ends are provided with end cap 14, in piston rod 4, also be provided with second piston rod 5 and second piston 3, piston 2 is fixed in the middle part of piston rod 4, the two ends of cylinder body 1 are respectively equipped with first oilhole 10 and second oilhole 11, and the two ends of piston rod 4 are respectively equipped with the left end that the 3rd oilhole 12 and the 4th oilhole 13, the second pistons 3 are fixed in second piston rod 5, the right-hand member of second piston rod 5 stretches out from the right-end openings end of second cylinder body, and the opening part of second cylinder body is provided with another end cap 15.Be provided with sealing member between described cylinder body 1 two ends and the end cap 14, be provided with sealing member between the open end of described piston rod 4 and another end cap 15.The inwall of cylinder body 1, the left end cap of cylinder body, piston 2 left ends and piston rod constitute first oil pocket 6, the inwall of cylinder body, the right end cap of cylinder body, piston right-hand member and piston rod constitute second oil pocket 7, the piston rod inwall and the second piston left end constitute the 3rd oil pocket 8, and piston rod inwall, the second piston right-hand member and second piston rod constitute the 4th oil pocket 9.
Working process of the present utility model is: when left push rod stretched out, liquid entered from second oilhole, flow in second oil pocket that right end cap, first piston right-hand member and left push rod by the inwall of cylinder body, cylinder body constitute, and promoted left push rod and stretched out.When left side push rod was regained, liquid entered from first oilhole, flow in first oil pocket that left end cap, first piston left end and left push rod by the inwall of cylinder body, cylinder body constitute, and left push rod is regained.When right push rod stretched out, liquid entered from the 3rd oilhole, flows in the 3rd oil pocket that is made of the left push rod inwall and the second piston left end, promotes right push rod and stretches out.When right push rod was regained, liquid entered from the 4th oilhole, flows in the 4th oil pocket that is made of left push rod inwall, the second piston right-hand member and right push rod, and right push rod is regained.
Jack of the present utility model is particularly useful for as the passing jack between the split type paste body filling support: when step pitch of side arm reach, the left push rod of passing jack stretches out a step pitch under the effect of first piston, and after-frame is motionless; When side arm moved forward a step pitch again, the right push rod of passing jack stretched out a step pitch under the effect of second piston, the counteraction step pitch that on side arm, makes it to move forward, and after-frame is still motionless; When side arm moved forward the 3rd step pitch, the right push rod of passing jack stretched out a step pitch under the effect of second piston, the counteraction step pitch that on side arm, makes it to move forward, and it is motionless that after-frame continues to keep; When side arm moved forward the 4th step pitch again, frame fell in after-frame, passed jack and regained, and after-frame is finished under the effect of right push rod and moved frame.
Except technique scheme, described piston rod also can be the rod member with left end opening, at this moment piston rod and direction of second piston rod transposing is got final product.
Claims (4)
1. jack, comprise cylinder body, piston rod and piston, it is characterized in that: described piston rod is the cavity body structure of hollow, be provided with second cylinder body of an end opening in the piston rod, this piston rod runs through the two ends of cylinder body, the cylinder body two ends are provided with end cap, in piston rod, also be provided with second piston rod and second piston, piston is fixed in the middle part of piston rod, the two ends of cylinder body are respectively equipped with first oilhole and second oilhole, and the two ends of piston rod are respectively equipped with the 3rd oilhole and the 4th oilhole, and second piston and second piston rod are fixedly linked, the other end of second piston rod stretches out from the open end of second cylinder body, and the opening part of second cylinder body is provided with another end cap.
2. jack as claimed in claim 1 is characterized in that: second piston is fixed in an end of second piston rod.
3. jack as claimed in claim 1 is characterized in that: be provided with sealing member between described cylinder body two ends and the end cap.
4. jack as claimed in claim 1 is characterized in that: be provided with sealing member between the open end of described piston rod and another end cap.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920223729XU CN201512385U (en) | 2009-09-24 | 2009-09-24 | Jack |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920223729XU CN201512385U (en) | 2009-09-24 | 2009-09-24 | Jack |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201512385U true CN201512385U (en) | 2010-06-23 |
Family
ID=42483791
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200920223729XU Expired - Fee Related CN201512385U (en) | 2009-09-24 | 2009-09-24 | Jack |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201512385U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102410935A (en) * | 2011-11-21 | 2012-04-11 | 长春轨道客车股份有限公司 | Six-degree-of-freedom platform position adjusting device for bogie parameter test bed |
| CN104609330A (en) * | 2015-01-21 | 2015-05-13 | 巨隆液压设备(集团)有限公司 | Bidirectional hydraulic jack |
| CN111453638A (en) * | 2020-03-26 | 2020-07-28 | 三一重型装备有限公司 | Deep hole piston rod of side-push jack and machining method and application thereof |
-
2009
- 2009-09-24 CN CN200920223729XU patent/CN201512385U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102410935A (en) * | 2011-11-21 | 2012-04-11 | 长春轨道客车股份有限公司 | Six-degree-of-freedom platform position adjusting device for bogie parameter test bed |
| CN104609330A (en) * | 2015-01-21 | 2015-05-13 | 巨隆液压设备(集团)有限公司 | Bidirectional hydraulic jack |
| CN104609330B (en) * | 2015-01-21 | 2017-02-22 | 巨隆液压设备(集团)有限公司 | Bidirectional hydraulic jack |
| CN111453638A (en) * | 2020-03-26 | 2020-07-28 | 三一重型装备有限公司 | Deep hole piston rod of side-push jack and machining method and application thereof |
| CN111453638B (en) * | 2020-03-26 | 2023-09-15 | 三一重型装备有限公司 | Deep hole piston rod of side-pushing jack and processing method and application thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: CATERPILLAR (ZHENGZHOU) CO., LTD. Free format text: FORMER NAME: ZHENGZHOU SIWEI ELECTROMECHANICAL EQUIPMENT MANUFACTURING CO., LTD. |
|
| CP01 | Change in the name or title of a patent holder |
Address after: 450001 No. 7 shuttle Road, hi tech Industrial Development Zone, Henan, Zhengzhou Patentee after: Caterpillar (Zhengzhou) Co., Ltd. Address before: 450001 No. 7 shuttle Road, hi tech Industrial Development Zone, Henan, Zhengzhou Patentee before: Zhengzhou Siwei Electromechanical Equipment Manufacturing Co., Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100623 Termination date: 20170924 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |