CN204082772U - Combined type screw thread self-locking hydraulic jack - Google Patents
Combined type screw thread self-locking hydraulic jack Download PDFInfo
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- CN204082772U CN204082772U CN201420368206.5U CN201420368206U CN204082772U CN 204082772 U CN204082772 U CN 204082772U CN 201420368206 U CN201420368206 U CN 201420368206U CN 204082772 U CN204082772 U CN 204082772U
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Abstract
A kind of combined type screw thread self-locking hydraulic jack, relates to hydraulic power unit technical field, and what solve is the technical problem that existing oil cylinder locking poor reliability and ouput force are low.This oil cylinder comprises cylinder barrel, main piston, sub-piston; Described main piston is arranged in inner cavity of cylinder, and the right-hand member of main piston extends cylinder barrel outside, the outside thread that it is screw axis that the side face of main piston right part is formed with main piston central axis; Described cylinder barrel is equipped with a drive motor, a ring gear, the pto＝power take-off of drive motor engages with ring gear, and ring gear is engaged with the outside thread of main piston right part by the internal thread of inner ring; Described main piston has a compensated cavity, described sub-piston is arranged in compensated cavity, and compensated cavity being separated into each sub-chamber around, the left end of sub-piston stretches into rodless cavity through the left end chamber wall of compensated cavity, and the right sub-chamber of compensated cavity is communicated with the rodless cavity of cylinder barrel by the axis hole be arranged on sub-piston.Oil cylinder of the present utility model, can reliably lock and ouput force is high.
Description
Technical field
The utility model relates to hydraulic power unit technology, particularly relates to a kind of technology of combined type screw thread self-locking hydraulic jack.
Background technique
Hydraulic jack is by the equipment of hydraulic driving outputting power, forms primarily of cylinder barrel and piston, and the inner chamber integrated of cylinder barrel is closed, and piston is arranged in inner cavity of cylinder with sliding matching mode, and inner cavity of cylinder is separated into two active chambers by piston.During hydraulic jack work, one of them active chamber oil-feed, another work oil return, can promote piston and slide, thus outputting power.
Hydraulic jack work time, in order to ensure the work safety of hydraulic jack, usually all need to configure hydrovalve to lock hydraulic jack on the oil inlet and oil return hydraulic pipe line of hydraulic jack, with ensure hydraulic jack can not because of the system failure unstability.But the required precision of mode to hydrovalve that this employing hydrovalve locks hydraulic jack is higher, and relate in the spool that there is hydrovalve, the positive lock to hydraulic jack cannot be realized, there is the defect of locking poor reliability.
In addition, the ouput force of existing hydraulic jack is relatively low, under some require higher operating mode to ouput force (such as civil engineering foundation pit construction), the outputting power while of often needing multiple hydraulic jack to cooperatively interact, therefore the ouput force of existing hydraulic jack need to improve.
Summary of the invention
For the defect existed in above-mentioned prior art, it is high that technical problem to be solved in the utility model is to provide a kind of locking reliability, and the combined type screw thread self-locking hydraulic jack that ouput force is high.
In order to solve the problems of the technologies described above, a kind of combined type screw thread self-locking hydraulic jack provided by the utility model, comprise cylinder barrel and piston, the two ends, left and right of described cylinder barrel are respectively closed by a cylinder cap, it is characterized in that: described piston has two, one of them piston is main piston, and another piston is sub-piston;
Described main piston is arranged in inner cavity of cylinder with sliding matching mode, and inner cavity of cylinder is separated into each separate sub-chamber around, and left sub-chamber is wherein rodless cavity, and right sub-chamber is wherein rod chamber;
The barrel of described cylinder barrel offers two actuator ports, one of them actuator port is communicated with rodless cavity, and another actuator port is communicated with rod chamber;
Described main piston is cylinder-piston, the right-hand member of main piston extends cylinder barrel outside through the right cylinder cap of cylinder barrel, the connecting part of main piston and the right cylinder cap of cylinder barrel is slidably matched and hermetic seal, the outside thread that it is screw axis that the side face of main piston right part is formed with main piston central axis;
Described cylinder barrel is equipped with a drive motor, a rotating ring gear, the pto＝power take-off of described drive motor engages with ring gear, the core wheel axis of described ring gear and main piston central axes, the inner ring of ring gear has the internal thread engaged with the outside thread of main piston right part;
Described main piston have one with it the coaxial and cylindrical cavity of integrally closed, this cylindrical cavity is compensated cavity, described sub-piston is arranged in compensated cavity with sliding matching mode, and compensated cavity is separated into each separate sub-chamber around, the left end of sub-piston stretches into the rodless cavity of cylinder barrel through the left end chamber wall of compensated cavity, the connecting part of sub-piston and main piston is slidably matched and hermetic seal, sub-piston has an axially through axis hole, axis hole on the left sub-chamber of compensated cavity and sub-piston cuts off mutually, the right sub-chamber of compensated cavity is communicated with the rodless cavity of cylinder barrel by the axis hole on sub-piston.
The combined type screw thread self-locking hydraulic jack that the utility model provides, ring gear is utilized to coordinate with main piston side face is externally threaded, main piston can be locked reliably, sub-piston is utilized to produce a compound thrust to main piston, the ouput force of main piston is further promoted, when oil cylinder working-pressure is constant, existing single ram cylinder that the ouput force of main piston compares same specification can increase about 60%, has the advantages that locking reliability is high and ouput force is high.
Accompanying drawing explanation
Fig. 1 is that the master of the combined type screw thread self-locking hydraulic jack of the utility model embodiment looks cut away view.
Embodiment
Illustrate below in conjunction with accompanying drawing and be described in further detail embodiment of the present utility model, but the present embodiment is not limited to the utility model, every employing analog structure of the present utility model and similar change thereof, all should list protection domain of the present utility model in.
As shown in Figure 1, a kind of combined type screw thread self-locking hydraulic jack that the utility model embodiment provides, comprise cylinder barrel 1 and piston, the two ends, left and right of described cylinder barrel 1 are respectively closed by a cylinder cap 4, it is characterized in that: described piston has two, one of them piston is main piston 2, and another piston is sub-piston 3;
Described main piston 2 is arranged in cylinder barrel 1 inner chamber with sliding matching mode, and cylinder barrel 1 inner chamber is separated into each separate sub-chamber around, and left sub-chamber is wherein rodless cavity 11, and right sub-chamber is wherein rod chamber 12;
The barrel of described cylinder barrel 1 offers two actuator ports, one of them actuator port is communicated with rodless cavity 11, and another actuator port is communicated with rod chamber 12;
Described main piston 2 is cylinder-piston, the right-hand member of main piston 2 extends cylinder barrel outside through the right cylinder cap 4 of cylinder barrel, main piston 2 is slidably matched and hermetic seal with the connecting part of the right cylinder cap 4 of cylinder barrel, the outside thread that it is screw axis that the side face of main piston 2 right part is formed with main piston central axis;
Described cylinder barrel 1 is equipped with the rotating ring gear 6 of a drive motor 5, the pto＝power take-off of described drive motor 5 engages with ring gear 6, the core wheel axis of described ring gear 6 and main piston central axes, the inner ring of ring gear 6 has the internal thread engaged with the outside thread of main piston 2 right part;
Described main piston 2 have one with it the coaxial and cylindrical cavity of integrally closed, this cylindrical cavity is compensated cavity 21, described sub-piston 3 is arranged in compensated cavity 21 with sliding matching mode, and compensated cavity 21 is separated into each separate sub-chamber around, the left end of sub-piston 3 stretches into the rodless cavity 11 of cylinder barrel through the left end chamber wall of compensated cavity 21, sub-piston 3 is slidably matched and hermetic seal with the connecting part of main piston 2, sub-piston 3 has an axially through axis hole 31, axis hole 31 on the left sub-chamber of compensated cavity 21 and sub-piston cuts off mutually, the right sub-chamber of compensated cavity 21 is communicated with the rodless cavity 11 of cylinder barrel by the axis hole 31 on sub-piston.
The working principle of the utility model embodiment is as follows:
The actuator port of rod chamber side is connected oil returning tube, pressure oil is injected rodless cavity by the actuator port of rodless cavity side, utilize drive motor to order about ring gear to rotate forward simultaneously, main piston can be promoted slide to the right, main piston is stretched out to the right, meanwhile, pressure oil in rodless cavity enters the right sub-chamber of compensated cavity by the axis hole on sub-piston, thus a compound thrust is produced to main piston, the ouput force of main piston is further promoted, when oil cylinder working-pressure is constant, existing single ram cylinder that the ouput force of main piston compares same specification can increase about 60%, after master piston slides puts in place, drive motor stall, ring gear is stall thereupon also, now ring gear namely by thread engagement mode by locking firm for main piston,
The actuator port of rodless cavity side is connected oil returning tube, pressure oil is injected rod chamber by the actuator port of rod chamber side, utilize drive motor to order about ring gear reversion simultaneously, main piston can be promoted and slide left, main piston is retracted left.
Claims (1)
1. a combined type screw thread self-locking hydraulic jack, comprises cylinder barrel and piston, and the two ends, left and right of described cylinder barrel are respectively closed by a cylinder cap, it is characterized in that: described piston has two, and one of them piston is main piston, and another piston is sub-piston;
Described main piston is arranged in inner cavity of cylinder with sliding matching mode, and inner cavity of cylinder is separated into each separate sub-chamber around, and left sub-chamber is wherein rodless cavity, and right sub-chamber is wherein rod chamber;
The barrel of described cylinder barrel offers two actuator ports, one of them actuator port is communicated with rodless cavity, and another actuator port is communicated with rod chamber;
Described main piston is cylinder-piston, the right-hand member of main piston extends cylinder barrel outside through the right cylinder cap of cylinder barrel, the connecting part of main piston and the right cylinder cap of cylinder barrel is slidably matched and hermetic seal, the outside thread that it is screw axis that the side face of main piston right part is formed with main piston central axis;
Described cylinder barrel is equipped with a drive motor, a rotating ring gear, the pto＝power take-off of described drive motor engages with ring gear, the core wheel axis of described ring gear and main piston central axes, the inner ring of ring gear has the internal thread engaged with the outside thread of main piston right part;
Described main piston have one with it the coaxial and cylindrical cavity of integrally closed, this cylindrical cavity is compensated cavity, described sub-piston is arranged in compensated cavity with sliding matching mode, and compensated cavity is separated into each separate sub-chamber around, the left end of sub-piston stretches into the rodless cavity of cylinder barrel through the left end chamber wall of compensated cavity, the connecting part of sub-piston and main piston is slidably matched and hermetic seal, sub-piston has an axially through axis hole, axis hole on the left sub-chamber of compensated cavity and sub-piston cuts off mutually, the right sub-chamber of compensated cavity is communicated with the rodless cavity of cylinder barrel by the axis hole on sub-piston.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420368206.5U CN204082772U (en) | 2014-07-06 | 2014-07-06 | Combined type screw thread self-locking hydraulic jack |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420368206.5U CN204082772U (en) | 2014-07-06 | 2014-07-06 | Combined type screw thread self-locking hydraulic jack |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204082772U true CN204082772U (en) | 2015-01-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420368206.5U Expired - Fee Related CN204082772U (en) | 2014-07-06 | 2014-07-06 | Combined type screw thread self-locking hydraulic jack |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204082772U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104088855A (en) * | 2014-07-06 | 2014-10-08 | 上海宏信设备工程有限公司 | Combined type thread self-locking hydraulic oil cylinder |
| CN108824059A (en) * | 2018-06-19 | 2018-11-16 | 东莞市联洲知识产权运营管理有限公司 | A kind of roller shell structure on paper-making drying cylinder |
| CN108895058A (en) * | 2018-09-06 | 2018-11-27 | 森筹环境科技(上海)有限公司 | A kind of safe self-locking stand oil cylinder of single effect |
| CN108953287A (en) * | 2018-09-06 | 2018-12-07 | 森筹环境科技(上海)有限公司 | A kind of automatic locked cylinder of safety and stability |
-
2014
- 2014-07-06 CN CN201420368206.5U patent/CN204082772U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104088855A (en) * | 2014-07-06 | 2014-10-08 | 上海宏信设备工程有限公司 | Combined type thread self-locking hydraulic oil cylinder |
| CN108824059A (en) * | 2018-06-19 | 2018-11-16 | 东莞市联洲知识产权运营管理有限公司 | A kind of roller shell structure on paper-making drying cylinder |
| CN108895058A (en) * | 2018-09-06 | 2018-11-27 | 森筹环境科技(上海)有限公司 | A kind of safe self-locking stand oil cylinder of single effect |
| CN108953287A (en) * | 2018-09-06 | 2018-12-07 | 森筹环境科技(上海)有限公司 | A kind of automatic locked cylinder of safety and stability |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150107 Termination date: 20160706 |