CN103635415A - Screw drive lifting table - Google Patents
Screw drive lifting table Download PDFInfo
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- CN103635415A CN103635415A CN201280002668.9A CN201280002668A CN103635415A CN 103635415 A CN103635415 A CN 103635415A CN 201280002668 A CN201280002668 A CN 201280002668A CN 103635415 A CN103635415 A CN 103635415A
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- arm
- hinged
- horizontal lifting
- lifting platform
- shaped connecting
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- 230000033001 locomotion Effects 0.000 claims description 16
- 230000005540 biological transmission Effects 0.000 claims description 9
- 230000001360 synchronised effect Effects 0.000 claims description 3
- 230000000087 stabilizing effect Effects 0.000 claims 8
- 239000003381 stabilizer Substances 0.000 claims 6
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 description 26
- 230000003028 elevating effect Effects 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 239000002365 multiple layer Substances 0.000 description 2
- 230000037396 body weight Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000034994 death Effects 0.000 description 1
- 231100000517 death Toxicity 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 210000003205 muscle Anatomy 0.000 description 1
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- Forklifts And Lifting Vehicles (AREA)
Abstract
A screw rod type driving lifting platform comprises a base, a left screw rod, a right screw rod, a left X-shaped connecting rod, a right X-shaped connecting rod and a horizontal lifting platform, wherein the left X-shaped connecting rod and the right X-shaped connecting rod are arranged at the left end and the right end between the base and the horizontal lifting platform, the fixed ends of the X-shaped connecting rods are respectively hinged to the base and the horizontal lifting platform, the movable ends of the X-shaped connecting rods are connected with the left screw rod and the right screw rod, the left screw rod and the right screw rod rotate to drive the movable ends of the left X-.
Description
Technical field
The present invention relates to elevation and subsidence mechanical, a kind of Screw-driven lift table is primarily referred to as.
Background technology
Because self-powered platform currently on the market is all to use oil pressure pump to promote lever to be worked compared with scissors, single shortcoming compared with scissors is to need a fixed fulcrum and a mobile fulcrum to carry out work, forming workbench liter must be higher, the distance of two fulcrums just closer to, and, it is the focus point that one of fulcrum moves towards workbench, another fulcrum is secured to the most side position of workbench, therefore, workbench liter must be more high more unstable, and when workman will be in one side work that fulcrum is moved, the body weight of workman will increase because of lever principle, thus workbench hidden qualitative and reduce again, so, lifting workbench currently on the market must be pedestal ten/weight, more high more unstable situation is obtained to resist workbench liter（See accompanying drawing one）, therefore, loop wheel machine car must be set out when making transport（Cost factor）And occur because the huge weight of lifting platform is made in situations such as job site movement difficulties, generally require several workmans and just may move, make the loss on man-hour, all it is to use double ladder or steelframe workbench so very having seen less in finishing and small shape engineering and having used self-powered platform.Double ladder also has more high more not hidden fixed, and height of table can not will climb up without section adjustment, workman（Lead to muscle power not drop, work hard）And lead to work efficiency drop（Working depth is not suitable for）, situations such as therefore workman also easily occurs unexpected occur.
Therefore situations such as medical expense led to, insurance indemnity, limbs disability, human life injures and deaths, labour and capital lawsuit, is countless, to society, the loss that family makes, and injures quite a lot.So, if light and handy, a hidden fixed self-powered platform, mini engineering and the industry security of fitting-out work can be improved, operating efficiency is improved.Reduce the internal loss of society.
Publication number RU2027624C1 discloses a kind of " equipment is dismantled and handling lift truck ",
The loading platform 11 lifted on the frame 3 and by two parallelogram drives realizations by the framework 3 on road wheel 1, installation is constituted.Between the lift strut 5 of two parallelogram transmission devices, pole use hinge connection with the corresponding connection between framework 3, loading platform 11, such loading platform can be rotated on horizontal plane, vertical plane.The direction of different thread segments is different on the bearing 7 of transmission device, and the nut 6 of installation can be moved on the different thread segment of all directions.Nut 6 between pole 5 use hinge connection.When the flywheel 14 of nut 6 is rotated on bearing 7, pole is folded or opened, so as to realize the rise and decline of loading platform 1.2.
It can be seen that from disclosed file and accompanying drawing, bearing 7 is connected with the frame of framework 3, there is nut 6 on framework 3, the lower end of lift strut 5 is connected on the frame 3, upper end is connected on nut 6, also the upper end of pole 5 is equal to be connected on bearing 7, so triangular structure is formed between framework 3 and lift strut 5 and bearing 7, and triangle is most stable of shape, when nut 6 is for linear motion along bearing 7, lift strut 5 is circled using lower end as the center of circle, but under the limitation of bearing 7, lift strut 5 can not possibly be circled, therefore, disclosed structure is invalid.In addition, disclosed structure also existence and stability is poor, it is impossible to the problems such as horizontal lifting.
Through retrieval, find no and be disclosed with the same or analogous technology of this technology.
The content of the invention
It is an object of the invention to provide a kind of Screw-driven lift table, pass through the lifting platform being made up of pedestal, horizontal lifting platform, left and right tooth screw mandrel, the two groups of X-shaped connecting rods in left and right, two groups of X-shaped link motions are driven by left and right tooth screw mandrel, the effect and purpose of horizontal lifting platform horizontal lifting is realized.In addition, this lifting platform can also realize multiple layer up-down structure, the requirement of higher operation is completed.
Realize the technical scheme is that：This Screw-driven lift table includes lifting part and running part, and concrete structure includes：Pedestal, left and right tooth screw mandrel, left and right two groups of X-shaped connecting rods, horizontal lifting platforms, wherein the two groups of X-shaped connecting rods in left and right are arranged on the left and right ends between pedestal and horizontal lifting platform, the fixing end of X-shaped connecting rod is respectively hinged on pedestal and horizontal lifting platform, the movable end of X-shaped connecting rod is connected with left and right tooth screw mandrel, left and right tooth screw mandrel rotates the activity end motion of the two groups of X-shaped connecting rods in driving left and right, realizes the lifting of horizontal lifting platform.
The technical scheme also includes：
The left and right tooth screw mandrel includes a screw mandrel provided with left tooth and right tooth simultaneously, wherein one group in two groups of X-shaped connecting rods of left tooth screw portion and left and right is connected, another group in two groups of X-shaped connecting rods of right tooth screw portion and left and right is connected.
The pedestal includes a framework, and two frame sides of the framework are guide rail, and framework lower end is provided with road wheel；
The horizontal lifting platform includes a framework, and two frame sides of the framework are guide rail；
The left and right tooth screw mandrel, which is included on a screw mandrel, is arranged with left-hand tooth section and dextrad tooth section, the first guide rod and the second guide rod are also respectively provided with the left and right tooth screw mandrel both sides, left and right tooth screw mandrel, the first guide rod, the second guide rod drive guide block and dextrad driving guide block through left-hand and end is arranged in the fixed block of guide rod end；
The X-shaped connecting rod includes the arm of stability and actuating arm, it is hinged in the middle of two-arm, actuating arm one end in wherein two groups X-shaped connecting rods is hinged on pedestal, the actuating arm other end is respectively hinged on left-hand driving guide block and dextrad driving guide block, arm of stability one end is hinged on the fixed block of guide rod end, and the arm of stability other end is respectively supported on the guide rail of pedestal, and is moved on guide rail, by variable angle between the arm of stability and actuating arm, the elevating movement of horizontal lifting platform is realized.
The screw mandrel is changed to two, and replaces two guide rods.
The running part includes the motor and deceleration device of gear drive or synchronous belt drive or reduction box transmission or chain drive.
The horizontal lifting operation post of one or more is provided with above the horizontal lifting platform, horizontal lifting operation post includes a framework, and two frame sides of the framework are guide rail, wherein
Connected between horizontal lifting operation post and horizontal lifting platform by two groups of left and right X-shaped connecting rod, wherein actuating arm one end is hinged on horizontal lifting operation post, the actuating arm other end is hinged on left-hand driving guide block and dextrad driving guide block, arm of stability one end is hinged on the fixed block of guide rod end, the arm of stability other end is supported on below the guide rail of horizontal lifting operation post, and moved below guide rail, it is hinged in the middle of the arm of stability and actuating arm；When driving guide block to be slided on the first guide rod and the second guide rod, driving arm swing is driven, actuating arm drives stable arm swing again, and arm of stability end is moved below guide rail, by variable angle between the arm of stability and actuating arm, the elevating movement of horizontal lifting operation post is realized；
Connected between horizontal lifting operation post and horizontal lifting operation post by two groups of left and right X-shaped connecting rod, wherein actuating arm one end is hinged on the horizontal lifting operating platform in upper strata, arm of stability one end of the actuating arm other end and lower floor's horizontal lifting operation post is hinged, arm of stability one end is hinged on lower floor's horizontal lifting operation post, the arm of stability other end is supported on below the guide rail of the horizontal lifting operating platform in upper strata, and moved below guide rail, by variable angle between the arm of stability and actuating arm, the elevating movement of the horizontal lifting operating platform in upper strata is realized.
The motor reduction gearbox is fixed in motor reduction gearbox fixed plate, and motor reduction gearbox fixed plate is fixed on the first guide rod and the second guide rod.
The hinged end of the actuating arm is provided with bearing；The hinged end of the arm of stability and support end are provided with bearing；Bearing is respectively equipped between the left and right tooth screw mandrel and guide rod end fixed block.
The two groups of X-shaped connecting rods in the left and right include being arranged between horizontal lifting platform and pedestal the left and right sides totally four X-shaped connecting rods.
The two groups of X-shaped connecting rods in the left and right include being arranged between horizontal lifting operation post and horizontal lifting operation post the left and right sides totally four X-shaped connecting rods.
The actuating arm includes left side actuating arm and right side actuating arm, wherein left side actuating arm lower end is hinged on pedestal, its upper end is hinged on dextrad driving guide block；Right side actuating arm lower end is hinged on pedestal, and its upper end is hinged on left-hand driving guide block.
The device have the advantages that：The features such as this lifting platform has that simple in construction, intensity is high, stability is good, floor space is small, manipulation is convenient and is applied widely.
Brief description of the drawings
Fig. 1 is the front view of one of structure of the present invention, represents raised configuration.
Fig. 2 is Fig. 1 top view.
Fig. 3 is Fig. 1 pedestal and horizontal lifting platform combining structure schematic diagram, represents sprocket wheel and chain drive structure.
Fig. 4 is Fig. 3 top view.
Fig. 5 is Fig. 3 schematic perspective view.
Fig. 6 is Fig. 1 sprocket wheel and chain drive structure schematic diagram（One of which type of belt drive）.
Fig. 7 is Fig. 6 schematic perspective view.
Fig. 8 is Fig. 7 assembling decomposing schematic representation.
Fig. 9 is two front view of structure of the present invention, represents raised configuration.
Figure 10 is Fig. 9 top view.
In figure：1 pedestal, 11 guide rails, 12 hinge holes, 2 road wheels, 3 X-shaped connecting rods, 31 arms of stability, 32 actuating arms, 33 bearings, 34 jointed shafts, 4 motors, 5 reduction boxes, 6 first guide rods, 7 or so tooth screw mandrels, 71 left-hand tooth sections, 72 dextrad tooth sections, 8 second guide rods, 9 horizontal lifting operation posts, 20 motor reduction gearbox fixed plates, 21 by movable sprocket, 22 chains, 23 drive sprockets, 24 connecting holes, 25 perforatings, 30 horizontal lifting platforms, 40 guide rod end fixed blocks, 41 guide fixing holes, 42 or so tooth screw mandrel supported holes, 50 left-hands drive guide block, 51 pilot holes, 52 left-hand inner screw tooth holes, 60 dextrad drive guide block, 61 dextrad inner screw tooth holes.
Embodiment
The present invention will be further described with reference to the accompanying drawings and examples：
The present invention is mainly made up of lifting part and running part.
This lifting platform is main to be made up of pedestal 1, left and right tooth screw mandrel 7, two groups of left and right X-shaped connecting rod 3, horizontal lifting platform 30 etc..Key technology is to drive two groups of X-shaped link motions by left and right tooth screw mandrel, realizes the function of horizontal lifting.
Two groups of left and right X-shaped connecting rod 3 is arranged on the left and right ends between pedestal 1 and horizontal lifting platform 30, the fixing end of X-shaped connecting rod 3 is respectively hinged on pedestal 1 and horizontal lifting platform 30, the movable end of X-shaped connecting rod 3 is connected with left and right tooth screw mandrel 7, left and right tooth screw mandrel 7 rotates the activity end motion of the two groups of X-shaped connecting rods 3 in driving left and right, realizes the lifting of horizontal lifting platform.Left and right tooth screw mandrel 7 can be two screw mandrels for having a screw mandrel of left and right tooth or being respectively provided with left tooth and right tooth.Pedestal 1 is the rectangular frame structure of a closing, as guide rail 11 above two frame sides of the framework, and having above four angles of framework below the hinge hole 12 being connected with X-shaped connecting rod 3, four angles of framework has road wheel 2.
Embodiment 1：
As Figure 1-3, this lifting platform is main is made up of pedestal 1, two groups of left and right X-shaped connecting rod 3, horizontal lifting platform 30, horizontal lifting operation post 9 etc..Key technology is to drive two groups of X-shaped link motions by left and right tooth screw mandrel, realizes the function of horizontal lifting.
Pedestal 1 is the rectangular frame structure of a closing, as guide rail 11 above two frame sides of the framework, and having above four angles of framework below the hinge hole 12 being connected with X-shaped connecting rod 3, four angles of framework has road wheel 2.
Two groups of left and right X-shaped connecting rod 3 is made up of the arm of stability 31 and actuating arm 32, and the arm of stability 31 and the intermediate interdigitated of actuating arm 32 are simultaneously hinged.
Horizontal lifting platform 30 drives guide block 50, dextrad to drive guide block 60, motor 4, reduction box 5, motor reduction gearbox fixed plate 20 etc. to constitute by left and right tooth screw mandrel 7, the first guide rod 6, the second guide rod 8, guide rod end fixed block 40, left-hand.Left and right tooth screw mandrel 7 has left-hand tooth section 71 and dextrad tooth section 72, and centre position is fixed with by movable sprocket 21；There is left-hand inner screw tooth hole 52 in the middle of left-hand driving guide block 50, there is pilot hole 51 both sides, and there is jointed shaft 34 at two ends；There is dextrad inner screw tooth hole 61 in the middle of dextrad driving guide block 60, there is pilot hole 51 both sides, and there is jointed shaft 34 at two ends；There is left and right tooth screw mandrel supported hole 42 in the middle of guide rod end fixed block 40, there is guide fixing hole 41 both sides, there is hinge hole 12 at two ends；There is perforating 25 in the middle of motor reduction gearbox fixed plate 20, there is connecting hole 24 both sides.
Horizontal lifting operation post 9 is the rectangular frame structure of a closing, as guide rail 11 below two frame sides of the framework, has the hinge hole 12 being connected with X-shaped connecting rod 3 below four angles of framework.
Annexation：Totally four X-shaped connecting rods 3 are connected between pedestal 1 and horizontal lifting platform 30 for two groups of left and right（See Fig. 3）.The two ends of left and right tooth screw mandrel 7 are each passed through the dextrad inner screw tooth hole 61 in the middle of the left-hand inner screw tooth hole 52 in the middle of left-hand driving guide block 50, the perforating 25 in the middle of motor reduction gearbox fixed plate 20 and dextrad driving guide block 60, and two ends are arranged on the bearing in the left and right tooth screw mandrel supported hole 42 of two guide rod end fixed blocks 40（It is not drawn into figure）Interior, the left-hand tooth section 71 and dextrad tooth section 72 of left and right tooth screw mandrel 7 are meshed with left-hand inner screw tooth hole 52 and dextrad inner screw tooth hole 61 respectively；First guide rod 6 and the two ends of the second guide rod 8 are each passed through the pilot hole 51 of the pilot hole 51, the connecting hole 24 of motor reduction gearbox fixed plate 20 and dextrad driving guide block 60 of left-hand driving guide block 50, and two ends are fixed in the guide fixing hole 41 of two guide rod end fixed blocks 40；The connecting hole 24 of motor reduction gearbox fixed plate 20 is fixed on the first guide rod 6 and the second guide rod 8, and the reduction box 5 of motor 4 is fixed in motor reduction gearbox fixed plate 20, and the reduction box 5 of motor 4 is directly engaged with left and right tooth screw mandrel 7（This structure is not required to drive sprocket 23, chain 22 and by movable sprocket 21, sees Fig. 1）；Four lower ends of actuating arm 32 are hinged on the hinge hole 12 at 1 four angles of pedestal, upper end is respectively hinged on the jointed shaft 34 of left-hand driving guide block 50 and dextrad driving guide block 60, four upper ends of the arm of stability 31 are hinged on the hinge hole 12 of two guide rod end fixed blocks 40, lower end is supported on the guide rail 11 of pedestal 1, and moved on guide rail 11, the arm of stability 31 is with the intermediate interdigitated of actuating arm 32 and hinged by jointed shaft 34.
Bearing is designed with hinge hole, making material is preferred metal material.
Operation principle
Motor 4 is rotated, and drive sprocket 23 and chain 22 drive and rotated by movable sprocket 21, and sprocket wheel 21 drives left and right tooth screw mandrel 7 to rotate again, other drive forms：（Synchronous belt, gear driving, reduction box direct drive etc.）, chain drive is the one of which that picture is shown！At this moment left-hand driving guide block 50 and dextrad driving guide block 60 start to make linear slide on the first guide rod 6 and the second guide rod 8 under the rotation of left and right tooth screw mandrel 7, and left-hand driving guide block 50 and dextrad driving guide block 60 drive actuating arm 32 to move again（Make circle swing using lower end pin joint as axle）, because the arm of stability 31 and actuating arm 32 are hinged, so the arm of stability 31 is also moved（Make circle swing using upper end pin joint as axle）, at this moment the lower end of the arm of stability 31 moved on guide rail 11, by variable angle between the arm of stability 31 and actuating arm 32, realize the elevating movement of horizontal lifting platform 30, when angle become it is small when, horizontal lifting platform 30 is raised, when angle become it is big when, horizontal lifting platform 30 declines.
Embodiment 2：
As a shown in Figure 6, it is that, in the top of horizontal lifting platform 30 increase horizontal lifting operation post 9, by two groups of left and right, totally four X-shaped connecting rods 3 link together between horizontal lifting operation post 9 and horizontal lifting platform 30.
Four upper ends of actuating arm 32 are hinged on the hinge hole 12 below 9 four angles of horizontal lifting operation post, lower end is respectively hinged on the jointed shaft 34 of left-hand driving guide block 50 and dextrad driving guide block 60, four lower ends of the arm of stability 31 are hinged on the hinge hole 12 of two guide rod end fixed blocks 40, upper end is supported on the guide rail 11 of horizontal lifting operation post 80, and moved on guide rail 11, the arm of stability 31 with it is hinged by jointed shaft 34 in the middle of actuating arm 32.
Operation principle
When the first guide rod 6 and the second guide rod 8 make linear slide, left-hand driving guide block 50 and dextrad driving guide block 60 equally drive actuating arm 32 to move（Make circle swing using upper end pin joint as axle）, because the arm of stability 31 and actuating arm 32 are hinged, so the arm of stability 31 is also moved（Make circle swing using lower end pin joint as axle）, at this moment the upper end of the arm of stability 31 moved on guide rail 11, pass through variable angle between the arm of stability 31 and actuating arm 32, the elevating movement of horizontal lifting operation post 9 is realized, when angle change is small, horizontal lifting operation post 9 is raised, when angle change is big, horizontal lifting operation post 9 declines.
Horizontal lifting operation post 9 can be according to highly desirable setting multilayer.When using multiple-layer horizontal lifting operating platform 9, the arm of stability 31 and actuating arm 32 being hinged between horizontal lifting operation post 9 by centre are connected, the one end of actuating arm 32 is hinged on the horizontal lifting operating platform 9 in upper strata, one end of the arm of stability 31 of the other end of actuating arm 32 and lower floor horizontal lifting operation post 9 is hinged, the one end of the arm of stability 31 is hinged on lower floor's horizontal lifting operation post 9, the other end of the arm of stability 31 is supported on below the guide rail 11 of the horizontal lifting operating platform 9 in upper strata, and it is mobile below guide rail 11, pass through variable angle between the arm of stability 31 and actuating arm 32, realize the elevating movement of the horizontal lifting operating platform 9 in upper strata, its operation principle is substantially the same manner as Example 2.
Embodiment 3：
As shown in figs. 9-10, embodiment 3 is the improvement on the basis of embodiment 1.Connected mode after improvement is：It is hinged in the lower end of actuating arm 32 in left side on pedestal, its upper end is hinged on dextrad driving guide block（Embodiment 1 is that the lower end of actuating arm 32 in left side is hinged on pedestal, and its upper end is hinged on left-hand driving guide block）；It is hinged in the lower end of actuating arm 32 on right side on pedestal, its upper end is hinged on left-hand driving guide block（Embodiment 1 is that the lower end of actuating arm 32 on right side is hinged on pedestal, and its upper end is hinged on dextrad driving guide block）.The stroke of actuating arm is increased one times, cause the rise of horizontal lifting platform to also increase one times.Remaining structure and connected mode and embodiment 1,2 are essentially identical.
Claims (11)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/CN2012/080529 WO2013131359A1 (en) | 2012-03-05 | 2012-08-24 | Screw-driven lift table |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103635415A true CN103635415A (en) | 2014-03-12 |
Family
ID=50231560
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201280002668.9A Pending CN103635415A (en) | 2012-08-24 | 2012-08-24 | Screw drive lifting table |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103635415A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107500209A (en) * | 2017-09-28 | 2017-12-22 | 陈细妹 | A kind of novel double-mast platform for working aloft |
| CN114152332A (en) * | 2021-11-12 | 2022-03-08 | 中国电子科技集团公司第十三研究所 | Road illuminance measuring device |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR1459313A (en) * | 1965-10-08 | 1966-04-29 | Floor lifting device, especially for theater stages | |
| US5445353A (en) * | 1992-02-13 | 1995-08-29 | Senju Seiyaku Kabushiki Kaisha | Support device for animal clamp |
| JPH07252093A (en) * | 1994-03-16 | 1995-10-03 | Mitsumasa Sato | Low-vibratory electric lifter |
| JP2009073657A (en) * | 2007-09-22 | 2009-04-09 | Akashin Corp | Table lift |
| CN201882856U (en) * | 2010-05-14 | 2011-06-29 | 赵诗怡 | Bracket type lifter |
| CN202594711U (en) * | 2012-03-05 | 2012-12-12 | 曾令诸 | Screw rod type driving lifting table |
-
2012
- 2012-08-24 CN CN201280002668.9A patent/CN103635415A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR1459313A (en) * | 1965-10-08 | 1966-04-29 | Floor lifting device, especially for theater stages | |
| US5445353A (en) * | 1992-02-13 | 1995-08-29 | Senju Seiyaku Kabushiki Kaisha | Support device for animal clamp |
| JPH07252093A (en) * | 1994-03-16 | 1995-10-03 | Mitsumasa Sato | Low-vibratory electric lifter |
| JP2009073657A (en) * | 2007-09-22 | 2009-04-09 | Akashin Corp | Table lift |
| CN201882856U (en) * | 2010-05-14 | 2011-06-29 | 赵诗怡 | Bracket type lifter |
| CN202594711U (en) * | 2012-03-05 | 2012-12-12 | 曾令诸 | Screw rod type driving lifting table |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107500209A (en) * | 2017-09-28 | 2017-12-22 | 陈细妹 | A kind of novel double-mast platform for working aloft |
| CN114152332A (en) * | 2021-11-12 | 2022-03-08 | 中国电子科技集团公司第十三研究所 | Road illuminance measuring device |
| CN114152332B (en) * | 2021-11-12 | 2024-04-26 | 中国电子科技集团公司第十三研究所 | Road illuminance measuring device |
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