CN101683963B - Cross bridging device for lifting supported object - Google Patents
Cross bridging device for lifting supported object Download PDFInfo
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- CN101683963B CN101683963B CN 200910091309 CN200910091309A CN101683963B CN 101683963 B CN101683963 B CN 101683963B CN 200910091309 CN200910091309 CN 200910091309 CN 200910091309 A CN200910091309 A CN 200910091309A CN 101683963 B CN101683963 B CN 101683963B
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Abstract
The invention provides a cross bridging device, which comprises a base (10), at least two pairs of shear arms (1, 2, 3, 4, 21 and 22) and a hydraulic cylinder (5), wherein the shear arms are arranged from top to bottom, are hinged with each other and are arranged on the base (10), and the hydraulic cylinder acts on the at least two pairs of the shear arms so that the shear arms are lifted up to a propping state form the state of horizontal placement on the base. The cross bridging device has strong applicability, occupies a small floor space, can be mounted and positioned quickly, is very convenient to be dismantled quickly by manpower, and not only meets use requirements but also considers harsh place conditions.
Description
Technical field
The present invention relates to a kind of liftable bracing or strutting arrangement, particularly a kind of made stage that uses in stage equipment carries out the bridging device of lifting.
Background technology
In large-scale arena stage, often in order to adapt to the needs of directing intention, need to change stage height and or profile, a kind of stage of disc-shape for example, it can be comprised of a plurality of fanlike die blocks, before performance, require stage height reduce, when performing, require stage to raise and can swell, namely present slight spherical, and will guarantee under this two states, all can above people perform or dancing on the stage.For this stage that forms slight sphere that risen by the plane, common hydraulic efficiency elevation structure is difficult to satisfy operating needs.
Summary of the invention
The object of the present invention is to provide a kind of bridging device that can support the large-scale circular stage and can make its lifting.
For realizing purpose of the present invention, provide following technical scheme:
A kind of bridging device comprises: base; Arrange and at least two pairs of shear arms that be hinged are placed on the base up and down; Hydraulic actuating cylinder acts on two pairs of shear arms at least, makes it be raised up to the state of propping up by the state that lies in base.
Particularly, shear arm is two pairs, comprises a pair of upper shear arm and a pair of lower scissors arm, and a pair of lower scissors arm links to each other with base.
Wherein, one of a pair of lower scissors arm lower scissors arm links to each other with base by the first radius arm, and the first radius arm one end links to each other with a lower scissors arm, and the other end is hinged on the hinged-support that is fixed in base.Perhaps, another shear arm of a pair of lower scissors arm links to each other with base by the second radius arm, and an end of the second radius arm links to each other with another shear arm, and its other end is hinged on the hinged-support that is fixed in base.
Wherein, one end of the hinged a pair of lower scissors arm of one end of a pair of upper shear arm, the other end of a pair of upper shear arm is hinged, the other end of lower scissors arm is settled respectively roller, roller supporting is on base and can roll along the surface of base, makes the other end of lower scissors arm mobile in opposite directions or mutually away from movement.
Wherein, an end of hydraulic actuating cylinder is placed in the other end of one of a pair of lower scissors arm, in hydraulic actuating cylinder the top of the piston rod of fore and aft motion be articulated in a pair of on one of the shear arm.
Particularly, shear arm is three pairs, comprises a pair of upper shear arm, a centering shear arm and a pair of lower scissors arm, and between shear arm and a pair of lower scissors arm, a pair of lower scissors arm links to each other with base a centering shear arm on a pair of.
Wherein, an end of the hinged centering shear arm of an end of a pair of upper shear arm, the other end of a pair of upper shear arm is hinged; One of a pair of lower scissors arm lower scissors arm links to each other with base by radius arm, and radius arm one end links to each other with a lower scissors arm, and the other end is hinged on the hinged-support that is fixed in base; The be hinged other end of a centering shear arm of one end of a pair of lower scissors arm, the other end is settled respectively roller, and roller supporting is on base and can roll along the surface of base, makes the other end of lower scissors arm mobile in opposite directions or mutually away from movement.
Perhaps, an end of the hinged centering shear arm of an end of a pair of upper shear arm is hinged between a pair of upper shear arm; The be hinged other end of a centering shear arm of one end of a pair of lower scissors arm, the other end and the base of one of a pair of lower scissors arm shear arm are hinged by hinged-support, the other end of its another shear arm is settled roller, roller supporting is on base and can roll along the surface of base, makes between the other end of a pair of lower scissors arm mobile in opposite directions or mutually away from movement.
Wherein, the bottom of hydraulic actuating cylinder is placed on one of a pair of lower scissors arm, in hydraulic actuating cylinder the top of the piston rod of fore and aft motion be articulated in a pair of on one of the shear arm, one of a pair of upper shear arm is parallel to one of a pair of lower scissors arm of settling the hydraulic actuating cylinder bottom.
Advantage of the present invention is: it is little, stable high that bridging device of the present invention not only takes up an area the space, and easy to use, unbalance loading can be adapted to, and layout quantity and the position of bridging device can be chosen at random according to size, load and the lifting travel of thing to be supported.
Bridging device of the present invention can Fast Installation be located, and also easily artificial fast dismantling removes, and has both satisfied operating needs, has taken into account again harsh site condition.
Description of drawings
Fig. 1 is the front view that bridging device embodiment one of the present invention props up state;
Fig. 2 is the front view of bridging device embodiment one retracted state of the present invention;
Fig. 3 is the left side view of bridging device shown in Figure 2;
Fig. 3 a is the birds-eye view of bridging device shown in Figure 2;
Fig. 4 is the front view that bridging device embodiment two of the present invention props up state;
Fig. 5 is the front view of bridging device embodiment two retracted states of the present invention;
Fig. 6 is the left side view of bridging device shown in Figure 5;
Fig. 6 a is the birds-eye view of bridging device shown in Figure 5;
Fig. 7 is the front view that bridging device embodiment three of the present invention props up state;
Fig. 8 is the front view of bridging device embodiment three retracted states of the present invention;
Fig. 9 is the left side view of bridging device shown in Figure 8;
Fig. 9 a is the birds-eye view of bridging device shown in Figure 8.
Description of reference numerals:
1, the first lower scissors arm; 1a, roller; 2, the second lower scissors arm; 2a, roller; 3, shear arm on first; 4, shear arm on second; 5, hydraulic actuating cylinder; 5a, piston rod; 6a, upper junction plate; 6b, lower connecting plate; 7a, the first radius arm; 7b, the second radius arm; 8, hinged-support; 9a, support hinge; 9b, 9c, adapter shaft; 10, base; 10a, 10b, cant beam; 10c, 10d, crossbeam; 10e, strength beam; 10f, longeron; 11, left side bridging assembly; 12, right side bridging assembly; 13, joint pin; 14, hinge, 15, joint pin; 16, hinge; 21, shear arm in first; 22, shear arm in second.
The specific embodiment
Describe the structure of bridging device in detail below in conjunction with accompanying drawing.
Embodiment one
As Fig. 1,2,3 and 3a shown in, bridging device of the present invention comprises that left-right symmetric is placed in a pair of bridging assembly 11,12 on the base 10, links to each other with adapter shaft 9b by supporting hinge 9a between left side bridging assembly 11 and the right side bridging assembly 12.
Wherein, the effect of adapter shaft 9b is that the coordination both sides are synchronous, and guarantees the stability of bridging device self.Supporting hinge 9a is the tooth pad of bridging device and thing to be supported, and the load of thing to be supported is passed to bridging assembly 11,12 by supporting hinge 9a.The structure that supports hinge is syllogic bending axle, the two ends of namely supporting hinge 9a are vertical with shear arm 3,4 arms on the one the second respectively, the part that supports hinge interlude and its two ends is angled, in order to guarantee that interlude is parallel with the edge of supported object, thereby guarantee the lifting of shear arm assembly freely.
As shown in Figure 1, 2, there is shown the structure of right side bridging assembly 12, the structure of left side bridging assembly 11 is identical with right side bridging assembly 12 structures, and is arranged symmetrically along the center line A-A line among Fig. 3 a.
The structure of bridging assembly 12 is described below.As shown in Figure 1, bridging assembly 12 has base 10, base 10 is provided with hinged-support 8, the hinged hinged-support 8 that is installed on of the end of first, second radius arm 7a, 7b, the other end is hinged with first, second lower scissors arm 1,2 bottom respectively, first, second lower scissors arm 1,2 middle part link to each other by hinge 9b, its lower end arranges respectively roller 1a and 2a, be supported on the base 10 and can roll thereon by roller 1a and 2a, with drive first, second lower scissors arm 1,2 lower end is mobile at base 10; First, second lower scissors arm 1,2 upper end connect respectively on second an end of shear arm 3 on the shear arm 4 and first, on first on the shear arm 3 and second other end of shear arm 4 mutually be hinged.
First, second lower scissors arm 1,2 and shear arm 3 on first, second, 4 rise drive by hydraulic actuating cylinder 5.As shown in Figure 1, 2, the lower end of the second lower scissors arm 2 is provided with and its all-in-one-piece connecting panel 6b, form the space can settle hydraulic actuating cylinder 5 bottoms between connecting panel 6b and the second lower scissors arm 2, the bottom of hydraulic actuating cylinder 5 is by between the hinged lower end that is placed in connecting panel 6b and the second lower scissors arm 2 of hinge 14.The middle part that is placed in shear arm 3 on the top and first of the piston rod 5a in the hydraulic actuating cylinder 5 is hinged, shown in Fig. 2,3, connecting panel 6a links to each other by the middle part lateral surface of shear arm 3 on three joint pins 13 and first, so that form the space by hinge 16 hinged arrangement piston rod 5a on the medial surface of connecting panel 6a and first between the lateral surface of shear arm 3.
When hydraulic actuating cylinder 5 oil-feed, eject piston rod 5a, thus by shear arm 3 in the jacking first, drive the first lower scissors arm 1,2 rises of the second lower scissors arm, the first lower scissors arm 1 and the second lower scissors arm 2 are subjected to respectively the restriction of radius arm 7a, 7b, centered by hinged-support 8, it is mobile in opposite directions by the lower end that roller 1a, 2a are supported on the base 10; When hydraulic actuating cylinder 5 is fuel-displaced, bridging assembly 12 is retracted to state shown in Figure 2 under the pressure-acting of the load that supports hinge 9a effect, the first lower scissors arm 1 and the second lower scissors arm 2 are subjected to respectively the restriction of first, second radius arm 7a, 7b, centered by hinged-support 8, mutually away from movement.
Shown in Fig. 3 a, base 10 is trapezoidal (being used for adapting to the shape of supported object) when overlooking, base 10 surrounds trapezium structure by trussed steel beam, two parallel crossbeam 10c, 10d about comprising, two cant beam 10a, 10b connecting the end of two crossbeam 10c, 10d, two crossbeam 10c, 10d and two cant beam 10a, 10b are interconnected to form trapezoidal framework type base 10.In order to improve the rigidity of base 10, medium position is established strength beam 10e in parallel between two parallel crossbeams.A pair of bridging assembly 11,12 two cant beam 10a, 10b along ladder-shaped frame are arranged symmetrically.
Embodiment two
Describe the structure of bridging device in detail below in conjunction with accompanying drawing.Shown in Fig. 6,6a, the structure of the embodiment of the invention two bridging devices comprises that left-right symmetric is placed in a pair of bridging assembly 11,12 on the base 10, links to each other with adapter shaft 9b, 9c by supporting hinge 9a between left side bridging assembly 11 and the right side bridging assembly 12.
Wherein, adapter shaft 9b, the effect of 9c is that the coordination both sides are synchronous, and guarantees the stability of bridging device self.Supporting hinge 9a is the tooth pad of bridging device and thing to be supported, and the load of thing to be supported is passed to bridging assembly 11,12 by supporting hinge 9a.The structure that supports hinge 9a is syllogic bending axle, the two ends of namely supporting hinge 9a are vertical with shear arm 3,4 arms on the one the second respectively, the part that supports hinge interlude and its two ends is angled, in order to guarantee that interlude is parallel with the edge of supported object, thereby guarantee the lifting of shear arm assembly freely.
Shown in Fig. 4,5, there is shown the structure of right side bridging assembly 12, the structure of left side bridging assembly 11 is identical with right side bridging assembly 12 structures, and is arranged symmetrically along the center line A-A among Fig. 6 a.
The structure of bridging assembly 12 is described below.As shown in Figure 4, bridging assembly 12 has base 10, base 10 is provided with hinged-support 8, the hinged hinged-support 8 that is installed on of the end of radius arm 7a, the bottom of the other end and the first lower scissors arm 1 is hinged, and first, second lower scissors arm 1,2 middle part link to each other by hinge 9b, and its lower end arranges respectively roller 1a and 2a, be supported on the base 10 and can roll thereon by roller 1a and 2a, with drive first, second lower scissors arm 1,2 lower end is mobile at base 10; First, second lower scissors arm 1,2 upper end connect respectively in second the lower end of shear arm 21 in the shear arm 22 and first, shear arm 21 in first, second, 22 middle part link to each other by hinge 9c, in first shear arm 21 be connected in the upper end of shear arm 22 connect respectively on second the lower end of shear arm 3 on the shear arm 4 and first, on first on the shear arm 3 and second upper end of shear arm 4 mutually be hinged by hinge 9a.
First, second lower scissors arm 1,2, shear arm 21 in first, second, 22 and shear arm 3 on first, second, 4 rise drive by hydraulic actuating cylinder 5.
Shown in Fig. 4,5, the lower end of the first lower scissors arm 1 is provided with and its all-in-one-piece connecting panel 6b, connecting panel 6b is by being connected with the first lower scissors arm 1 with vertical three joint pins 15 of the first lower scissors arm 1, so that form the space that can settle hydraulic actuating cylinder 5 bottoms between connecting panel 6b and the first lower scissors arm 1, the bottom of hydraulic actuating cylinder 5 is by in the hinge 14 hinged spaces that are placed between connecting panel 6b and the first lower scissors arm 1.The middle part that is placed in shear arm 3 on the top and first of the piston rod 5a in the hydraulic actuating cylinder 5 is hinged, as shown in Figure 5, connecting panel 6a links to each other by the middle part lateral surface of shear arm 3 on three joint pins 13 and first, so that form the space by hinge 16 hinged arrangement piston rod 5a on the medial surface of connecting panel 6a and first between the lateral surface of shear arm 3.
When hydraulic actuating cylinder 5 oil-feed, eject piston rod 5a, thus by shear arm 3 in the jacking first, drive shear arm 22, the first lower scissors arm 1,2 rises of the second lower scissors arm in the shear arm 21, second in first, the first lower scissors arm 1 is subjected to the restriction of radius arm 7a, centered by hinged-support 8, the first lower scissors arm 1, the second lower scissors arm 2 are moved in opposite directions by the lower end that roller 1a, 2a are supported on the base 10; When hydraulic actuating cylinder 5 is fuel-displaced, bridging assembly 12 is retracted to state shown in Figure 5 under the pressure-acting of the load that supports hinge 9a effect, the first lower scissors arm 1 is subjected to the restriction of radius arm 7a, the first lower scissors arm 1, the second lower scissors arm 2 carry out centered by hinged-support 8 mutually away from movement, finally drop to arrive position shown in Figure 5.
Shown in Fig. 6 a, base 10 is trapezoidal (being used for adapting to the shape of supported object) when overlooking, base 10 surrounds trapezium structure by trussed steel beam, two parallel crossbeam 10c, 10d about comprising, two cant beam 10a, 10b connecting the end of two crossbeam 10c, 10d, two crossbeam 10c, 10d and two cant beam 10a, 10b are interconnected to form trapezoidal framework type base 10.In order to improve the rigidity of base 10, three longeron 10f that medium position is established strength beam 10e in parallel and arranged perpendicular to crossbeam between two parallel crossbeams.A pair of bridging assembly 11,12 two cant beam 10a, 10b along ladder-shaped frame are arranged symmetrically.
Embodiment three
Fig. 7,8,9,9a show the 3rd embodiment of bridging device of the present invention.
Shown in Fig. 9 and 9a, bridging device of the present invention comprises that left-right symmetric is placed in a pair of bridging assembly 11,12 on the base 10, and by supporting hinge 9a and adapter shaft 9b, 9c links to each other between left side bridging assembly 11 and the right side bridging assembly 12.
Wherein, adapter shaft 9b, the effect of 9c is that the coordination both sides are synchronous, and guarantees the stability of bridging device self.Supporting hinge 9a is the tooth pad of bridging device and thing to be supported, and the load of thing to be supported is passed to bridging assembly 11,12 by supporting hinge 9a.The structure that supports hinge 9a is syllogic bending axle, the two ends of namely supporting hinge 9a are vertical with shear arm 3,4 arms on the one the second respectively, the interlude of support hinge 9a and the part at its two ends are angled, in order to guarantee that interlude is parallel with the edge of supported object, thereby guarantee the lifting of shear arm assembly freely.
Shown in Fig. 7,8, there is shown the structure of right side bridging assembly 12, the structure of left side bridging assembly 11 is identical with right side bridging assembly 12 structures, and is arranged symmetrically along the center line A-A among Fig. 9 a.
As shown in Figure 7, roller is not established in the lower end of the second lower scissors arm 2, but is hinged on the base 10 by hinged-support 8.The lower end of the first lower scissors arm 1 is supported on the base 10 by roller 1a.Its on first on the shear arm 3 to the second shear arm 4 grow up and cause one times, the top of shear arm 4 is hinged on its middle part and second, the support hinge 9a that connects left and right sides bridging assembly 11,12 and support supported object is settled in the upper end of shear arm 3 on first.
All the other structures and the embodiment two of embodiment three are basic identical, at this not in repeat specification.
When hydraulic actuating cylinder 5 oil-feed, eject piston rod 5a, thus by shear arm 3 in the jacking first, drive shear arm 22, the first lower scissors arm 1,2 rises of the second lower scissors arm in the shear arm 21, second in first, the second lower scissors arm 2 lower ends are subjected to the restriction of hinged-support 8 and transfixion, the lower end of the first lower scissors arm 1 is supported on the base 10 by roller 1a, can move towards hinged-support 8; When hydraulic actuating cylinder 5 is fuel-displaced, bridging assembly 12 is retracted to state shown in Figure 8 under the pressure-acting of the load that supports hinge 9a effect, the lower end of the second lower scissors arm 2 is subjected to the restriction of hinged-support 8 and transfixion, the first lower scissors arm 1 is undertaken moving away from hinged-support 8 by the lower end that roller 1a is supported on the base 10, makes whole bridging assembly drop to state shown in Figure 8.
Claims (8)
1. bridging device that is used for supporting large-scale circular stage is characterized in that comprising:
Base (10) is ladder-shaped frame;
It is a pair of bridging assembly (11,12) that the support hinge (9a) of syllogic bending axle links to each other with adapter shaft (9b) by structure, left-right symmetric is placed on the base (10), two cant beams (10a, 10b) along ladder-shaped frame are arranged symmetrically, and each bridging assembly has:
At least two pairs of shear arms (1,2,3,4,21,22) of arranging up and down and be hinged, the two ends of supporting hinge are vertical with corresponding shear arm (3,4) respectively, and the interlude of support hinge and the part at its two ends are angled;
Hydraulic actuating cylinder (5), has the therein piston rod of fore and aft motion, act on described at least two pairs of shear arms, make it be raised up to the state of propping up by the state that lies in base, the top of piston rod (5a) is articulated on the end of one of at least two pairs of shear arms by the first connecting panel (6a), the bottom of hydraulic actuating cylinder (5) is articulated on another the end of two pairs of shear arms (2), wherein by the second connecting panel (6b) at least
The first connecting panel links to each other with an end lateral surface of one of at least two pairs of shear arms by three joint pins (13), and one of the first connecting panel and two pairs of shear arms nothing is relatively moved, and makes the space that forms arrangement piston rod (5a) top therebetween;
The second connecting panel links to each other by another a end side surface of three joint pins (15) and two pairs of shear arms (2) at least, make the second connecting panel and with another of two pairs of shear arms without relatively moving, and make and form the space of settling hydraulic actuating cylinder (5) bottom therebetween.
2. bridging device as claimed in claim 1 is characterized in that described shear arm is two pairs, comprises a pair of upper shear arm (3,4) and a pair of lower scissors arm (1,2), and described a pair of lower scissors arm (2) links to each other with base (10).
3. bridging device as claimed in claim 2, it is characterized in that: one of described a pair of lower scissors arm (1,2) lower scissors arm (1) links to each other with described base by the first radius arm (7a), described the first radius arm (7a) end links to each other with a described lower scissors arm (1), and the other end is hinged on the hinged-support (8) that is fixed in base (10).
4. bridging device as claimed in claim 3, it is characterized in that: another shear arm (2) of described a pair of lower scissors arm (1,2) links to each other with described base by the second radius arm (7b), one end of described the second radius arm (7b) links to each other with described another shear arm (2), and its other end is hinged on the hinged-support (8) that is fixed in base (10).
5. such as the arbitrary described bridging device of claim 2-4, it is characterized in that:
One end of the hinged described a pair of lower scissors arm of one end of described a pair of upper shear arm (3,4) (1,2), the other end of described a pair of upper shear arm (3,4) is hinged, the other end of described lower scissors arm (1,2) is settled respectively roller (1a, 2a), it is upper and can roll along the surface of base (10) that described roller (1a, 2a) is supported in base (10), makes the other end of described lower scissors arm (1,2) mobile in opposite directions or mutually away from movement.
6. bridging device as claimed in claim 1, it is characterized in that described shear arm is three pairs, comprise a pair of upper shear arm (3,4), a centering shear arm (21,22) and a pair of lower scissors arm (1,2), a described centering shear arm is positioned between described a pair of upper shear arm (3,4) and the described a pair of lower scissors arm (1,2), and described a pair of lower scissors arm (2) links to each other with base (10).
7. bridging device as claimed in claim 6 is characterized in that:
One end of the hinged described centering shear arm of one end of described a pair of upper shear arm (3,4) (21,22), the other end of described a pair of upper shear arm (3,4) is hinged;
One of described a pair of lower scissors arm (1,2) lower scissors arm (1) links to each other with base by radius arm (7a), described radius arm (7a) end links to each other with a described lower scissors arm (1), and the other end is hinged on the hinged-support (8) that is fixed in base (10);
The be hinged other end of a described centering shear arm (21,22) of one end of described a pair of lower scissors arm (1,2), the other end is settled respectively roller (1a, 2a), it is upper and can roll along the surface of base (10) that described roller (1a, 2a) is supported in base (10), makes the other end of described lower scissors arm (1,2) mobile in opposite directions or mutually away from movement.
8. bridging device as claimed in claim 6 is characterized in that
One end of the hinged described centering shear arm of one end of described a pair of upper shear arm (3,4) (21,22) is hinged between the described a pair of upper shear arm (3,4);
The be hinged other end of a described centering shear arm (21,22) of one end of described a pair of lower scissors arm (1,2), the other end of one of described a pair of lower scissors arm (1,2) shear arm (2) and base (10) are hinged by hinged-support (8), the other end of its another shear arm (1) is settled roller (1a), it is upper and can roll along the surface of base (10) that described roller (1a) is supported in base (10), makes between the described other end of a pair of lower scissors arm (1,2) mobile in opposite directions or mutually away from movement.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200910091309 CN101683963B (en) | 2009-08-17 | 2009-08-17 | Cross bridging device for lifting supported object |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200910091309 CN101683963B (en) | 2009-08-17 | 2009-08-17 | Cross bridging device for lifting supported object |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101683963A CN101683963A (en) | 2010-03-31 |
| CN101683963B true CN101683963B (en) | 2013-03-27 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200910091309 Expired - Fee Related CN101683963B (en) | 2009-08-17 | 2009-08-17 | Cross bridging device for lifting supported object |
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| CN (1) | CN101683963B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102251687B (en) * | 2011-05-09 | 2012-09-05 | 斯毕士舞台设备技术（杭州）有限公司 | Jacking-up mechanism of sleeve roller chains |
| CN105421829B (en) * | 2015-12-29 | 2017-08-29 | 华强方特（芜湖）文化科技有限公司 | A kind of special efficacy elevator stage |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2158871Y (en) * | 1993-06-21 | 1994-03-16 | 西安市开思汽车检测保修设备开发公司 | Lifting machine without lever |
| CN2349190Y (en) * | 1998-09-10 | 1999-11-17 | 林青 | Lifting machine |
| CN2687089Y (en) * | 2004-03-11 | 2005-03-23 | 上海交通大学 | Hinged rhombic multi-bar mechanism lifting device |
| CN1843889A (en) * | 2005-04-07 | 2006-10-11 | 上海太平洋机电制造有限公司 | Lever servo unit with changeable elevation angle |
| CN200988750Y (en) * | 2006-09-29 | 2007-12-12 | 高月桂 | Folding jacking machine |
-
2009
- 2009-08-17 CN CN 200910091309 patent/CN101683963B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2158871Y (en) * | 1993-06-21 | 1994-03-16 | 西安市开思汽车检测保修设备开发公司 | Lifting machine without lever |
| CN2349190Y (en) * | 1998-09-10 | 1999-11-17 | 林青 | Lifting machine |
| CN2687089Y (en) * | 2004-03-11 | 2005-03-23 | 上海交通大学 | Hinged rhombic multi-bar mechanism lifting device |
| CN1843889A (en) * | 2005-04-07 | 2006-10-11 | 上海太平洋机电制造有限公司 | Lever servo unit with changeable elevation angle |
| CN200988750Y (en) * | 2006-09-29 | 2007-12-12 | 高月桂 | Folding jacking machine |
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| CN101683963A (en) | 2010-03-31 |
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