CN2063513U - Unloaded quick-rising and falling mechanical jack - Google Patents
Unloaded quick-rising and falling mechanical jack Download PDFInfo
- Publication number
- CN2063513U CN2063513U CN 90207193 CN90207193U CN2063513U CN 2063513 U CN2063513 U CN 2063513U CN 90207193 CN90207193 CN 90207193 CN 90207193 U CN90207193 U CN 90207193U CN 2063513 U CN2063513 U CN 2063513U
- Authority
- CN
- China
- Prior art keywords
- hinge
- bar
- screw mandrel
- cramp bar
- half nut
- 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.)
- Withdrawn
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- Forms Removed On Construction Sites Or Auxiliary Members Thereof (AREA)
Abstract
Disclosed is an unloaded quick-rising and falling mechanical jack, comprising a lower support (1), a tray (2), a lower supporting rod (3), a screw rod (4), an upper supporting rod (7), a top cap (8), an upper support (9), a supporting rod hinge (10) and a handle (13). The utility model is characterized in that a screw rod embracing mechanism (5) which is connected with the guiding hinge (6) of the supporting rod and can be engaged or disconnected with the lead screw (4) is arranged on the screw rod (4). When in zero load, an embracing semi screw cap (18) is made disengaged with the screw rod (4) by a rotating cam (23) so that the top cap (8) can elevate quickly. When the utility model supports objects, the embracing semi screw cap (18) is engaged with the screw rod (4) so that a turn knob (13) can jack up the supported objects. The utility model which can save labour and raise work efficiency has small size and light weight, suitable to be carried and used by automobiles.
Description
The utility model belongs to jack, particularly relates to a kind of no-load fast lifting machinery jack.
At present the mechanical jack of a large amount of horizontal adjusting liftings of using is the screw mandrels by a traverse, and respectively there is a upper and lower pole hinge at its two ends, and one of them pole hinge is the band wire rod thread and meshes with screw mandrel.Two lower fulcrum bars and lower bracket are hinged, and the top and the upper bracket of two upper rack posts are hinged, and a top cap is arranged on the support.Rotary screw changes the handle on the cap during work, because the screw mandrel rotation makes the pole hinge of band wire rod thread promote the pole motion, just makes top cap upward movement produce supporting power jack-up object.The contrarotation screw mandrel changes cap during unloading, and the top cap just moves downward.Because laborsaving in order to use, often all design-calculated is smaller for the pitch of screw mandrel, though therefore laborsaving in use, screw mandrel changes cap and rotates a circle, and the distance of top cap lifting is very little, thereby influences work efficiency.
The purpose of this utility model, thus be a kind of jack of design when unloaded the top cap can reach the laborsaving purpose that can increase work efficiency again by fast lifting.
The utility model is achieved in that the right-hand member at the screw mandrel of traverse has a cramp bar hinge, left end has a cramp bar guiding hinge, pallet is arranged below the screw mandrel, lower bracket is arranged on the pallet, the lower end of two lower support bars is connected with lower bracket respectively, wherein the upper end of a lower support bar is connected with the cramp bar hinge, and the upper end of another root lower support bar and cramp bar guiding hinge is connected, cramp bar hinge and cramp bar lead hinge all be not with the screw mandrel ingear.The upper end of two upper support bars is connected with upper bracket respectively, and wherein the lower end of a upper support bar is connected with the cramp bar hinge, and the lower end of another root upper support bar is connected with cramp bar guiding hinge.On the right-hand member screw mandrel of cramp bar hinge thrust bearing is arranged, jug on the screw mandrel termination.There is one can embrace actuation mechanism on the cramp bar guiding hinge left side with screw mandrel engagement or the screw mandrel of throwing off.There is a top cap upper end of upper bracket.
Accompanying drawing has provided embodiment of the present utility model, is described further below in conjunction with accompanying drawing:
Fig. 1 is an integral structure scheme drawing of the present utility model;
Fig. 2 is a cramp bar guiding hinge front view;
Fig. 3 is that cramp bar guiding hinge is overlooked part sectional view;
Fig. 4 is the outside drawing that screw mandrel is embraced actuation mechanism;
Fig. 5 is the B-B part sectional view;
Fig. 6 is the C-C cut-away view.
Lower bracket 1, pallet 2, lower support bar 3, screw mandrel 4, screw mandrel is embraced actuation mechanism 5, cramp bar guiding hinge 6, upper support bar 7, top cap 8, upper bracket 9, cramp bar hinge 10, thrust bearing 11, screw mandrel termination 12, handle 13, dovetail furrow 14, screw mandrel pilot hole 15, cantilever pole 16, sliding rod hole 17, embrace moving half nut 18, half garden wire rod thread 19, slide bar 20, square toes 21, camshaft hole 22, cam 23, camshaft 24, nut 25, slide bar support holes 26, spring eye 27, cantilever pole positioning groove 28, dovetail key 29, spring 30, screw thread 31.
Screw mandrel is embraced actuation mechanism (5) and is comprised that two are embraced moving half nut (18), two slide bars (20), four springs (30) cams (23) and nut (25).Embracing on moving half nut (18) has half garden wire rod thread (19), and the upper and lower of embracing the burbling area of moving half nut (18) has slide bar support holes (26) and spring eye (27) to embrace on the side end face of moving half nut (18) dovetail key (29).There is dovetail furrow (14) at the middle part, side of cramp bar guiding hinge (6), and the upper and lower end of screw mandrel pilot hole (15) respectively has a cantilever pole (16), and there is sliding rod hole (17) outer end of cantilever pole (16).One end of slide bar (20) has square toes (21), and camshaft hole (22) is arranged on the square toes (21), and the other end of slide bar (20) has screw thread (31).Screw mandrel is embraced the structure of actuation mechanism (5) and installed is such: embrace moving half nut (18) armful both sides in screw mandrel (4) for two, cantilever pole (16) on the cramp bar guiding hinge (6) has spring (30) in the spring eye (27) in the cantilever pole positioning groove (28) of embracing moving half nut (18).Embracing dovetail key (29) on moving half nut (18) is inserted in the dovetail furrow (14) on the cramp bar guiding hinge (6).Camshaft (24) on the cam (23) is arranged in square toes (21) the overhead cam axis holes (22) of slide bar (20).Slide bar (20) passes slide bar support holes (26), spring eye (27) and sliding rod hole (17), and is on the side of embracing moving half nut (18), with nut (25) that the screw thread (31) on the slide bar (20) is fixing.The arcwall face of cam (23) is close to the lateral surface of embracing moving half nut (18).The utility model is to use like this: before the supporting object, earlier cam (23) is rotated, because spring (30) is originally impaction state, along with slide bar (20) moves forward, make the effect of the released elastic force at this moment of spring (30) will embrace dovetail key (29) on half nut (18) distance of in dovetail furrow (14), outwards sliding, just will make and embrace half an interior garden wire rod thread (19) of moving half nut (18) and separate with screw mandrel (4).At this moment use hand mobile support rod guidance to hinge (6), make upper support bar (7) and lower support bar (3) upward movement very easily, top cap (8) on the upper bracket (9) is risen, and contact will be by a body surface that claims, cam (23) rotation is compressed, embrace moving half nut (18) and screw mandrel (4) engagement.Swing handle (13) screw mandrel (4) rotation, screw mandrel is embraced actuation mechanism (5) drive cramp bar guiding hinge (6) and is moved, and just promotes upwards jack-up upper bracket (9) of upper support bar (7), the object on the top cap (8) is propped up claimed certain altitude.If in the time of will putting down by the object of a title, get final product to opposite spin handle (13), treat that top cap (8) breaks away from when being claimed object surfaces, with cam (23) to opposite spin, armful moving half nut (18) is separated with screw mandrel (4), just the utility model can be taken out.
Advantage of the present utility model: simple in structure, reliable, easy to use, kept existing horizontal adjusting lifting mechanic jacks, laborsaving, volume is little, lightweight advantage, overcome again the slow shortcoming of rising or falling speed when zero load, thereby improved operating efficiency.
Claims (5)
1, a kind of no-load fast lifting machinery jack is by lower bracket (1), pallet (2), lower support bar (3) screw mandrel (4), upper support bar (7), top cap (8), upper bracket (9), cramp bar hinge (10), thrust bearing (11), handle (13) is formed, the right-hand member that it is characterized in that screw mandrel (4) has a cramp bar hinge (10), left end has a cramp bar guiding hinge (6), the lower end of two lower support bars (3) is connected with lower bracket (1) on the pallet (2) respectively, the upper end of left side lower support bar (3) is connected with cramp bar guiding hinge (6), the upper end of the lower support bar (3) on the right side is connected with cramp bar hinge (10), the upper end of two upper support bars (7) is connected with upper bracket (9) respectively, the lower end of the upper support bar (7) on the left side is connected with cramp bar guiding hinge (6), the lower end of the upper support bar (7) on the right side is connected with cramp bar hinge (10), the right-hand member of cramp bar hinge (10) has thrust bearing (11), jug (13) is gone up in screw mandrel termination (12), there is a top cap (8) upper end of upper bracket (9), has one can embrace actuation mechanism (5) with screw mandrel (4) engagement or the screw mandrel of throwing off on the left side of cramp bar guiding hinge (6).
2,, it is characterized in that screw mandrel embraces actuation mechanism (5) and comprise that two are embraced moving half nut (18), two (20) four springs of slide bar (30), cam (23) and nuts (25) according to the described no-load fast lifting of claim 1 machinery jack.Embracing on moving half nut (18) has half garden wire rod thread (19), embraces the upper and lower of the burbling area of moving half nut (18), and slide bar support holes (26) and spring eye (27) are arranged, and on the side end face of armful moving half nut (18) dovetail key (29) is arranged.
3, according to the described no-load fast lifting machinery of claim 1 jack, the middle part, side end face that it is characterized in that cramp bar guiding hinge (6) has dovetail furrow (14), the upper and lower end of screw mandrel pilot hole (15) respectively to have the outer end of a cantilever pole (16), cantilever pole (16) that sliding rod hole (17) is arranged.
4, according to the described no-load fast lifting of claim 1 machinery jack, an end that it is characterized in that slide bar (20) has on square toes (21), the square toes (21) camshaft hole (22) is arranged, and the other end of slide bar (20) has screw thread (31).
5, according to the described no-load fast lifting machinery of claim 1 jack, it is characterized in that cantilever pole (16) on the cramp bar guiding hinge (6) is in the cantilever pole positioning groove (28) of embracing moving half nut (18), spring (30) is arranged in the spring eye (27), dovetail key (29) is arranged in the dovetail furrow (14), in the camshaft hole (22) of the square toes (21) on the slide bar (20) camshaft (24) is arranged, slide bar (20) passes slide bar support holes (26), spring eye (27) and sliding rod hole (17), embrace have on moving half nut (18) side with slide bar (20) on the fixing nut (25) of screw thread (31), the arcwall face of cam (23) is close to a lateral surface of embracing moving half nut (18).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 90207193 CN2063513U (en) | 1990-04-30 | 1990-04-30 | Unloaded quick-rising and falling mechanical jack |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 90207193 CN2063513U (en) | 1990-04-30 | 1990-04-30 | Unloaded quick-rising and falling mechanical jack |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2063513U true CN2063513U (en) | 1990-10-10 |
Family
ID=4887650
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 90207193 Withdrawn CN2063513U (en) | 1990-04-30 | 1990-04-30 | Unloaded quick-rising and falling mechanical jack |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2063513U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101890901A (en) * | 2010-07-23 | 2010-11-24 | 纽贝耳汽车(杭州)有限公司 | Electric automobile power battery quick-change mechanism |
| CN103253613A (en) * | 2013-05-08 | 2013-08-21 | 国家电网公司 | Lift type supporting device |
| CN103274032A (en) * | 2013-05-27 | 2013-09-04 | 江苏科技大学 | Supporting leg for thin film type LNG (liquefied natural gas) ship containment system mounting platform |
| CN103434970A (en) * | 2013-08-26 | 2013-12-11 | 西南交通大学 | Ballastless track board lifting support |
| CN107601340A (en) * | 2017-09-21 | 2018-01-19 | 刘瑞 | A kind of scissor jack of automobile using |
| CN109338819A (en) * | 2018-09-28 | 2019-02-15 | 宿迁学院 | A kind of high-speed rail road surface waterproof volume pavier |
-
1990
- 1990-04-30 CN CN 90207193 patent/CN2063513U/en not_active Withdrawn
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101890901A (en) * | 2010-07-23 | 2010-11-24 | 纽贝耳汽车(杭州)有限公司 | Electric automobile power battery quick-change mechanism |
| CN103253613A (en) * | 2013-05-08 | 2013-08-21 | 国家电网公司 | Lift type supporting device |
| CN103274032A (en) * | 2013-05-27 | 2013-09-04 | 江苏科技大学 | Supporting leg for thin film type LNG (liquefied natural gas) ship containment system mounting platform |
| CN103274032B (en) * | 2013-05-27 | 2016-03-30 | 江苏科技大学 | A kind of supporting leg for membrane LNG tanker containment system erecting stage |
| CN103434970A (en) * | 2013-08-26 | 2013-12-11 | 西南交通大学 | Ballastless track board lifting support |
| CN103434970B (en) * | 2013-08-26 | 2016-03-30 | 西南交通大学 | A kind of fragment-free track slab lifting support |
| CN107601340A (en) * | 2017-09-21 | 2018-01-19 | 刘瑞 | A kind of scissor jack of automobile using |
| CN109338819A (en) * | 2018-09-28 | 2019-02-15 | 宿迁学院 | A kind of high-speed rail road surface waterproof volume pavier |
| CN109338819B (en) * | 2018-09-28 | 2024-03-01 | 宿迁学院 | Waterproof roll spreading machine for high-speed railway surface |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |