CN202201677U - Difunctional mechanically self-locking jack - Google Patents
Difunctional mechanically self-locking jack Download PDFInfo
- Publication number
- CN202201677U CN202201677U CN2011203167592U CN201120316759U CN202201677U CN 202201677 U CN202201677 U CN 202201677U CN 2011203167592 U CN2011203167592 U CN 2011203167592U CN 201120316759 U CN201120316759 U CN 201120316759U CN 202201677 U CN202201677 U CN 202201677U
- Authority
- CN
- China
- Prior art keywords
- piston rod
- cylinder body
- oil pocket
- blind hole
- communicated
- 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
Links
Images
Landscapes
- Actuator (AREA)
Abstract
The utility model relates to a difunctional mechanically self-locking jack which comprises a cylinder body, wherein a first oil chamber is formed in the cylinder body; a first piston rod is mounted in the cylinder body; a top tray is mounted at the top of the first piston rod; the outer end of the first piston rod is in threaded connection with a locking collar; a second oil chamber is formed in the first piston rod; a second piston rod is arranged in the second oil chamber; the lower end of the second piston rod is fixedly connected with the bottom of the cylinder body; a blind hole is formed in the second piston rod; the upper end of the blind hole serves as the bottom of the blind hole; an opening is formed at the lower end of the blind hole; the blind hole is communicated with the second oil chamber on the side of the second piston rod; a first quick connector communicated with the first oil chamber is arranged at the bottom of the cylinder body; and a second quick connector communicated with the blind hole is also arranged at the bottom of the cylinder body. The difunctional mechanically self-locking jack has the advantages of lower height, small occupied area and lower cost.
Description
Technical field:
The utility model relates to technical field of jacks, specifically is a kind of dual action mechanical self-locking jack with jacking limit function.
Background technology:
Existing structure with dual action mechanical self-locking jack of jacking limit function is; As shown in Figure 1, have the cylinder body 1a of an oil cylinder, piston rod 3a is housed in the said cylinder body; The outer end on piston rod 3a top is through the retainer 4a that is threaded; After piston rod 3a ejected, retainer 4a prevented that through preventing piston rod 3a withdrawal oil cylinder with being threaded of piston rod 3a piston rod release or unexpected release from causing roof pressure thing forfeiture roof pressure.Meet accident.This dual action mechanical self-locking jack will be provided with one section long screw thread in the outer end on the top of piston rod 3a, also is provided with a sealing block 7a in the cylinder body, makes sealing block 7a and cylinder body 1a formation leak free oil pocket; The top of oil pocket is provided with the first quick coupling 5a, and the bottom of oil pocket is provided with the second quick coupling 6a, if piston rod 3a is risen; From the second quick coupling 6a oil-feed, oil pressure heads on piston rod 3a and rises, if piston rod 3a is descended; Then from the first quick coupling 5a oil-feed, make oil pressure above the piston rod 3a greater than the oil pressure below the piston rod 3a, at this moment; Rotate retainer 4a piston rod 3a is descended, just can the reverse opening second quick coupling 6a, thus oil can be flowed out from the second quick coupling 6a; At this moment, rotate retainer 4a again piston rod 3a is descended, adopt this structure; Reliable in order to guarantee being tightly connected of piston rod 3a and cylinder body 1a and sealing block 7a; Threaded portion can not retract cylinder in, also be piston rod 3a and sealing block 7a bonded assembly partly for smooth, and smooth this section part can not be as the stroke of dual action mechanical self-locking jack.Therefore, make the excessive overall height of dual action mechanical self-locking jack, cause to take up room greatlyyer that materials used is more, cost is higher.
The utility model content:
The technical matters that the utility model will solve is, overcomes existing technological deficiency, provide a kind of height lower, take up room little, lower-cost dual action mechanical self-locking jack.
The technical solution of the utility model is, a kind of dual action mechanical self-locking jack is provided, and is provided with the cylinder body of first oil pocket in it comprises; The first piston bar is housed in the said cylinder body; First piston masthead portion is equipped with, and the outer end of first piston bar is through the retainer that is threaded, and said first piston bar inside is provided with second oil pocket; Be provided with second piston rod in said second oil pocket; Captiveing joint with cylinder base in the lower end of said second piston rod, is provided with the upper end in second piston rod for the end, lower end are the blind hole of mouth, is communicated with second oil pocket of second piston rod side in the said blind hole; The bottom of said cylinder body is provided with first quick coupling that is communicated with first oil pocket, and the bottom of said cylinder body also is provided with second quick coupling that is communicated with blind hole.
After adopting said structure, the utlity model has following advantage:
The utility model is established second piston rod in the inside that the first piston bar of taking over a business is housed, and the bottom of cylinder body is provided with first quick coupling that is communicated with first oil pocket, and the bottom of said cylinder body also is provided with second quick coupling that is communicated with oilhole.If when the first piston bar was risen, oil got into first oil pocket from first quick coupling, oil pressure just can withstand the first piston bar; The first piston bar is risen, if when the first piston bar is descended, control oil gets into from second quick coupling; Through second oil pocket of entering of the blind hole in second piston rod, and because second piston rod is fixed on cylinder base, therefore; When the oil pressure in second oil pocket during greater than first oil pocket, the first piston bar descends, and just can make the first quick coupling reverse opening; Oil in first oil pocket is flowed out from first quick coupling, rotate retainer this moment the first piston bar is descended.This dual action mechanical self-locking jack need not be provided with the sealing that smooth part guarantees first piston bar and cylinder body in the outer end of first piston bar; Therefore; The bottom-to-top-height of the dual action mechanical self-locking jack of this structure of employing of identical stroke is lower, and it is little to take up room, and cost is lower.
As improvement, said first piston masthead portion is provided with a circular groove, be equipped with in the said groove ball seat and with ball seat bonded assembly bulb, the top of said bulb is fixed with, the notch place of said groove is provided with and is used for the spacing annular stop piece in groove of bulb.Adopt this structure, take over a business to rely on bulb and cooperating of ball seat to do universal activity within the specific limits, thus guarantee to take over a business when dual action mechanical self-locking jack tilts steadily.
As improvement, the periphery of said retainer is equipped with driving lever.Driving lever is housed, can makes the rotation retainer more laborsaving.
As improvement, by pass valve is equipped with at the top of said oil cylinder, and said by pass valve is communicated with first oil pocket.By pass valve is housed, and when the first piston bar rises too high, when piston base exceeded by pass valve, the oil in first oil pocket just can flow out from by pass valve, prevented that the first piston bar from rising too high, and guaranteed the safety of dual action mechanical self-locking jack.
Description of drawings:
Accompanying drawing 1 is the structural representation of the dual action mechanical self-locking jack of prior art;
Accompanying drawing 2 is structural representations that the utility model dual action mechanical self-locking jack first piston bar runs to when middle part;
Accompanying drawing 3 is structural representations that the utility model dual action mechanical self-locking jack first piston bar runs to when bottom;
As shown in the figure: in the prior art: 1a, cylinder body, 2a, oil pocket, 3a, piston rod, 4a, retainer, 5a, first quick coupling, 6a, second quick coupling, 7a, sealing block;
In the utility model: 1, cylinder body, 2, first oil pocket, 3, the first piston bar, 4, retainer; 5, second oil pocket, 6, driving lever, 7, second piston rod, 8, blind hole; 9, first quick coupling, 10, second quick coupling, 11, oil duct, 12, by pass valve; 13, ball seat, 14, bulb, 15, take over a business, 16, the annular stop piece.
The specific embodiment:
Below in conjunction with the accompanying drawing and the specific embodiment the utility model is done further detailed explanation.
Like Fig. 2, shown in Figure 3, the utility model provides a kind of dual action mechanical self-locking jack, is provided with the cylinder body 1 of first oil pocket 2 in it comprises; In the said cylinder body 1 first piston bar 3 is housed; First piston bar 3 can slide in first oil pocket 2, and first piston bar 3 tops are equipped with 15, and the outer end of first piston bar 3 is through the retainer 4 that is threaded; Said first piston bar 3 inside are provided with second oil pocket 5; Being provided with second piston rod, 7, the second piston rods 7 in said second oil pocket 5 and in second oil pocket 5, sliding, captives joint with cylinder body 1 bottom in the lower end of said second piston rod 7; Being provided with the upper end in second piston rod 7 is the blind hole 8 of mouth for the end, lower end; Be communicated with second oil pocket 5 of second piston rod, 7 sides in the said blind hole 8, the side of second piston rod 7 is provided with the oil duct 11 that is communicated with the blind hole 8 and second oil pocket 5, and the bottom of said cylinder body 1 is provided with first quick coupling 9 that is communicated with first oil pocket 2; The bottom of said cylinder body also is provided with second quick coupling, 10, the second quick couplings 10 that are communicated with blind hole 8 and is communicated with second oil pocket 5 through blind hole 8 and oil duct 11.
The principle of work of the utility model is: if when the first piston bar is risen, oil gets into first oil pocket from first quick coupling, and oil pressure just can withstand the lower end of first piston bar; The first piston bar is risen, and the retainer through being threaded rotates retainer simultaneously; Because being threaded of retainer and first piston bar can stop the first piston bar to glide, if when making the decline of first piston bar; Control oil gets into from second quick coupling, and oil is through second oil pocket of entering of the blind hole in second piston rod, and because second piston rod is fixed on cylinder base; Therefore, when the oil pressure in second oil pocket during, just pushing away the first piston bar and descending greater than first oil pocket; Thereby the oil pressure in first oil pocket is increased; Just can make the first quick coupling reverse opening, the oil in first oil pocket is flowed out from first quick coupling, rotate retainer this moment the first piston bar is descended.This dual action mechanical self-locking jack need not be provided with the sealing that smooth part guarantees first piston bar and oil cylinder in the outer end of first piston bar; Therefore; The bottom-to-top-height of the dual action mechanical self-locking jack of this structure of employing of identical stroke is lower, and it is little to take up room, and cost is lower.
As improvement; Said first piston bar 3 tops are provided with a circular groove; Ball seat 13 is housed in the said groove reaches and ball seat 13 bonded assembly bulbs 14, the top of said bulb 14 is fixed with 15, and the notch place of said groove is provided with and is used for bulb 13 spacing annular stop pieces 16 in groove.Adopt this structure, take over a business to rely on bulb and cooperating of ball seat to do universal activity within the specific limits, thus guarantee to take over a business when dual action mechanical self-locking jack tilts steadily.
As improvement, the periphery of said retainer 4 is equipped with driving lever 6.Driving lever is housed, can makes the rotation retainer more laborsaving.
As improvement, by pass valve 12 is equipped with at the top of said cylinder body 1, and said by pass valve 12 is communicated with first oil pocket 2.By pass valve is housed, and when the first piston bar rises too high, when piston base exceeded by pass valve, the oil in first oil pocket just can flow out from by pass valve, prevented that the first piston bar from rising too high, and guaranteed the safety of dual action mechanical self-locking jack.
Claims (4)
1. dual action mechanical self-locking jack; In comprising, it is provided with the cylinder body (1) of first oil pocket (2); First piston bar (3) is housed in the said cylinder body (1); (15) are equipped with in first piston bar (3) top, and the outer end of first piston bar (3) is characterized in that through the retainer (4) that is threaded: said first piston bar (3) inside is provided with second oil pocket (5); Be provided with second piston rod (7) in said second oil pocket (5); Captiveing joint with cylinder body (1) bottom in the lower end of said second piston rod (7), is provided with the upper end in second piston rod (7) for the end, lower end are the blind hole (8) of mouth, is communicated with second oil pocket (5) of second piston rod (7) side in the said blind hole (8); The side of second piston rod (7) is provided with the oil duct (11) that is communicated with blind hole (8) and second oil pocket (5); The bottom of said cylinder body is provided with first quick coupling (9) that is communicated with first oil pocket (2), and the bottom of said cylinder body (1) also is provided with second quick coupling (10) that is communicated with blind hole (8), and second quick coupling (10) is communicated with second oil pocket (5) through blind hole (8) and oil duct (11).
2. dual action mechanical self-locking jack according to claim 1; It is characterized in that: said first piston bar (3) top is provided with a circular groove; Ball seat (13) is housed in the said groove to be reached and ball seat (13) bonded assembly bulb (14); The top of said bulb (14) is fixed with (15), and the notch place of said groove is provided with and is used for the spacing annular stop piece (16) in groove of bulb (13).
3. dual action mechanical self-locking jack according to claim 1 is characterized in that: the periphery of said retainer (4) is equipped with driving lever (6).
4. dual action mechanical self-locking jack according to claim 1 is characterized in that: by pass valve (12) is equipped with at the top of said cylinder body (1), and said by pass valve (12) is communicated with first oil pocket (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203167592U CN202201677U (en) | 2011-08-24 | 2011-08-24 | Difunctional mechanically self-locking jack |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203167592U CN202201677U (en) | 2011-08-24 | 2011-08-24 | Difunctional mechanically self-locking jack |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202201677U true CN202201677U (en) | 2012-04-25 |
Family
ID=45965810
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011203167592U Expired - Fee Related CN202201677U (en) | 2011-08-24 | 2011-08-24 | Difunctional mechanically self-locking jack |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202201677U (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102704705A (en) * | 2012-06-06 | 2012-10-03 | 河北省建筑科学研究院 | Building long-stroke redescending-free multi-point synchronous jacking method |
| CN103775423A (en) * | 2014-01-08 | 2014-05-07 | 宁波腾工精密机械制造有限公司 | Fastening oil cylinder for die holder of cold heading machine |
| CN104400736A (en) * | 2014-10-31 | 2015-03-11 | 北京卫星环境工程研究所 | Precise fine-tuning and supporting device for butting and disassembling large cabin section of spacecraft |
| AT516280B1 (en) * | 2015-02-06 | 2016-04-15 | Neuson Hydrotec Gmbh | Piston-cylinder unit with adjusting ring |
| CN106044615A (en) * | 2016-07-27 | 2016-10-26 | 泸州合成液压件有限公司 | Mechanical lock double-acting jack |
| CN108928762A (en) * | 2018-07-25 | 2018-12-04 | 南京奥达升智能科技有限公司 | It is a kind of can the hydraulic jack that adjusts of autonomous deflecting for building rectification |
| CN109911803A (en) * | 2019-04-15 | 2019-06-21 | 戴向胜 | Automatically control the self-locking jack of bit shift compensation section |
| CN110029675A (en) * | 2019-05-24 | 2019-07-19 | 戴向胜 | Assembled in foundation pit compensates bracing members |
| CN111017787A (en) * | 2019-12-30 | 2020-04-17 | 武昌船舶重工集团有限公司 | Support adjusting device |
| CN111410135A (en) * | 2020-03-31 | 2020-07-14 | 成都飞机工业（集团）有限责任公司 | Jack with fine adjustment and locking functions |
-
2011
- 2011-08-24 CN CN2011203167592U patent/CN202201677U/en not_active Expired - Fee Related
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102704705A (en) * | 2012-06-06 | 2012-10-03 | 河北省建筑科学研究院 | Building long-stroke redescending-free multi-point synchronous jacking method |
| CN102704705B (en) * | 2012-06-06 | 2014-08-06 | 河北省建筑科学研究院 | Building long-stroke redescending-free multi-point synchronous jacking method |
| CN103775423A (en) * | 2014-01-08 | 2014-05-07 | 宁波腾工精密机械制造有限公司 | Fastening oil cylinder for die holder of cold heading machine |
| CN104400736A (en) * | 2014-10-31 | 2015-03-11 | 北京卫星环境工程研究所 | Precise fine-tuning and supporting device for butting and disassembling large cabin section of spacecraft |
| CN104400736B (en) * | 2014-10-31 | 2016-08-17 | 北京卫星环境工程研究所 | The Precision trimming support means decomposed for the docking of spacecraft large-scale cabin section |
| EP3054170A1 (en) | 2015-02-06 | 2016-08-10 | Neuson Hydrotec GmbH | Cylinder-piston unit with adjusting ring |
| AT516280A4 (en) * | 2015-02-06 | 2016-04-15 | Neuson Hydrotec Gmbh | Piston-cylinder unit with adjusting ring |
| AT516280B1 (en) * | 2015-02-06 | 2016-04-15 | Neuson Hydrotec Gmbh | Piston-cylinder unit with adjusting ring |
| CN106044615A (en) * | 2016-07-27 | 2016-10-26 | 泸州合成液压件有限公司 | Mechanical lock double-acting jack |
| CN108928762A (en) * | 2018-07-25 | 2018-12-04 | 南京奥达升智能科技有限公司 | It is a kind of can the hydraulic jack that adjusts of autonomous deflecting for building rectification |
| CN109911803A (en) * | 2019-04-15 | 2019-06-21 | 戴向胜 | Automatically control the self-locking jack of bit shift compensation section |
| CN110029675A (en) * | 2019-05-24 | 2019-07-19 | 戴向胜 | Assembled in foundation pit compensates bracing members |
| CN111017787A (en) * | 2019-12-30 | 2020-04-17 | 武昌船舶重工集团有限公司 | Support adjusting device |
| CN111410135A (en) * | 2020-03-31 | 2020-07-14 | 成都飞机工业（集团）有限责任公司 | Jack with fine adjustment and locking functions |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN202201677U (en) | Difunctional mechanically self-locking jack | |
| CN201461596U (en) | Hydrocylinder with locking device | |
| CN202611723U (en) | Hydraulic upright column | |
| CN220264323U (en) | Stop return device capable of passing forward and backward | |
| CN103754793B (en) | A kind of lifting mechanism with automatic limit device | |
| CN206072011U (en) | A kind of cylinder with lock with water-proof function | |
| CN102000986A (en) | Clamping device of large-scale vertical lathe rotating table | |
| CN202164000U (en) | Oil buffer | |
| CN218320494U (en) | Electric hydraulic upwarping device | |
| CN201292815Y (en) | Floating shoes for cementing oil well | |
| CN218493936U (en) | Feeding hydraulic cylinder body casting | |
| CN1332873C (en) | Anti-falling feed-through hydraulic lifting and lowering jack | |
| CN203097813U (en) | Flow restricting self-filling float collar for manifold cycles | |
| CN207390900U (en) | A kind of internal thread mechanical caging hydraulic jack | |
| CN201666237U (en) | Treadle type hydraulic pump | |
| CN105298519B (en) | A kind of crank fixes big stroke internal-injection type hydraulic prop | |
| CN204842706U (en) | Mould with automatic positioning mechanism | |
| CN206860975U (en) | A kind of interior valve | |
| CN111155955A (en) | Negative-pressure oil-gas mixed pumping pump capable of being matched with blowout-prevention oil drainer and method | |
| CN201155573Y (en) | Inner pressure type self locking hoisting jack release valve | |
| CN202131048U (en) | Improved pneumatic hydraulic jack | |
| CN201884355U (en) | Hydraulic controlled high flow lifting distribution valve for large-sized mining electric wheel dumper | |
| CN206553136U (en) | A kind of storehouse type jack of novel double-pump core oil pump configuration | |
| CN205559401U (en) | Pilot -operated check valve | |
| CN201666160U (en) | Standing column used for dual-telescopic plunger hydraulic bracket |
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: 20120425 Termination date: 20140824 |
|
| EXPY | Termination of patent right or utility model |