CN101767757A - Screw rod-type accessible lifting platform - Google Patents
Screw rod-type accessible lifting platform Download PDFInfo
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- CN101767757A CN101767757A CN201010022839A CN201010022839A CN101767757A CN 101767757 A CN101767757 A CN 101767757A CN 201010022839 A CN201010022839 A CN 201010022839A CN 201010022839 A CN201010022839 A CN 201010022839A CN 101767757 A CN101767757 A CN 101767757A
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- roller
- turnover panel
- lifting platform
- roller plate
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- 230000001360 synchronised effect Effects 0.000 claims abstract description 6
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- 238000007906 compression Methods 0.000 claims description 12
- 230000014759 maintenance of location Effects 0.000 claims description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 abstract description 10
- 229910052782 aluminium Inorganic materials 0.000 abstract description 10
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- 230000008901 benefit Effects 0.000 abstract description 4
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- 239000004411 aluminium Substances 0.000 description 9
- 238000000034 method Methods 0.000 description 9
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- 238000009434 installation Methods 0.000 description 3
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- 239000004821 Contact adhesive Substances 0.000 description 2
- 239000002253 acid Substances 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 230000003028 elevating effect Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000002349 favourable effect Effects 0.000 description 2
- 230000006798 recombination Effects 0.000 description 2
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 238000005491 wire drawing Methods 0.000 description 2
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- 230000008093 supporting effect Effects 0.000 description 1
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Abstract
The invention relates to a screw rod-type accessible lifting platform which comprises a lifting platform, a screw rod lifting mechanism, a roller board mechanism and a frame guide rail body; wherein the center of the frame guide rail body is provided with the lifting platform. The screw rod lifting mechanism comprises a motor, two screw rods and a synchronous belt for connecting the motor and the screw rods; each screw rod is respectively provided with a screw rod belt pulley and a main nut; the screw rod belt pulleys are wound on the synchronous belt and the motor, and the main nuts are connected with roller boards. The roller board mechanism comprises two roller boards and wheels for the roller boards to lean to inside; the two roller boards are respectively fixed on both sides of the lifting platform; the upper side and the lower side of each roller board are provided with the wheels for the roller boards to lean to inside; and the wheels for the roller boards to lean to inside move along the frame guide rail body. The equipment frame part of the invention adopts a large-cross section aluminum profile, the appearance of a frame is neat and the anti-corrosion effect is good. The equipment of the invention is directly fixed on the ground, the construction is simple, the lifting platform has the advantages of low noise, stable operation and multi-level safety protection, and protective boards can be exchanged on the channel need, and are provided with the functions of safety turning and bottom plate safety mesh stopping.
Description
Technical field
The present invention relates to accessible elevating platform, particularly a kind of accessible vertical lifting platform of screw drive steel structure frame.
Background technology
Product in the past is that industrial fork type elevator is referred in the Wheelchair Accessible, and in actual use, industrial fork type elevator has following shortcoming:
1, processing is coarse.
2, equipment appearance and architectural appearance are inharmonious aspect environment.
3, in use there is not any safety precautions.
4, the erecting stage need be provided with the machine hole that is lower than ground 250～450mm, is easy to cause machine hole ponding in rainy season, makes the equipment rack long period of soaking in water, causes the corrosion of equipment steel structure part, influences the service life and the safe handling of equipment.
5, cut the elevator of fork structure, its lifting table rocks in lifting process greatly, and lifting is not steady.
6, hydraulically-driven lifting platform is used when being lower than-10 ℃ in temperature, and characteristics such as hydraulic pressure oil viscosity change, and lifting table can not be used or unstable working condition.
In view of this, the present invention aims to provide steady, the safe screw rod-type accessible lifting platform of a kind of lifting.
Summary of the invention
The purpose of this invention is to provide a kind of screw rod-type accessible lifting platform, it has solved above-mentioned existing in prior technology problem, and lifting is steady to reach, purpose of safety.
Technical solution of the present invention is as follows:
A kind of screw rod-type accessible lifting platform comprises lifting table, also comprises screw lifting mechanism, roller plate mechanism and rack rail body;
Described rack rail body central authorities are provided with lifting table;
Described screw lifting mechanism comprises motor, two screw rods and the synchronous band that connects motor and screw rod, and screw rod belt wheel and mother nut are set respectively on the two screw rods, and the screw rod belt wheel twines band and motor synchronously, and mother nut connects roller plate;
Described roller plate mechanism comprises two roller plate and roller plate inner relying wheel, and two roller plate are separately fixed at the both sides of lifting table, and roller plate is provided with the roller plate inner relying wheel in both sides up and down, and the roller plate inner relying wheel moves along the rack rail body.
Described screw rod-type accessible lifting platform also comprises automatic turning-board mechanism;
Described automatic turning-board mechanism comprises turnover panel guide rail conjunction, turnover panel roller, turnover panel link span and turnover panel conjunction;
Described turnover panel guide rail conjunction is arranged on a side of rack rail body, and the inclined-plane is arranged at the two ends of turnover panel guide rail conjunction; Described turnover panel link span is articulated in a side of lifting table, and the two ends of turnover panel link span articulate turnover panel roller and turnover panel conjunction respectively, and turnover panel link span nationality turnover panel roller moves along turnover panel guide rail conjunction.
Described screw rod-type accessible lifting platform also comprises safety edge mechanism;
Described safety edge mechanism comprises safety edge, compression spring and limit switch, compression spring attachment security touch panel, limit switch is arranged in the flexible stroke of compression spring, limit switch connects motor, when safety edge touches obstacle, compression spring upwards promotes a segment distance and touches limit switch, and motor quits work.
Described roller plate is provided with horizontal plate, and horizontal plate is provided with through hole, be socketed on the screw rod, and the mother nut that is threaded.
Described roller plate mechanism also comprises several expansion tightening wheel conjunctions, and several expansion tightening wheel conjunctions are separately positioned on the roller plate outside, and each expansion tightening wheel conjunction is provided with expansion tightening wheel, expansion tightening wheel motion butt rack rail body.
Described roller plate mechanism also comprises the main roller lining, and the main roller lining is arranged on the inboard of roller plate inner relying wheel.
Described rack rail body also comprises link span and following link span, last link span and following link span respectively by screw retention on the rack rail body.
Described screw rod-type accessible lifting platform also comprises safety net, is arranged on the lifting table bottom.
The present invention makes it compared with prior art owing to adopted above technical scheme, and the present invention has the following advantages:
Aspect apparatus processing: it is main body that equipment rack partly adopts the heavy in section aluminium section bar, the riser guide of equipment, when frame connect to be installed with the connecting of building, frame decorative cover etc., all can embody to some extent on the aluminium section bar main body, its surface is through acid washing phosphorization, electrostatic plastic spraying, can make equipment steel structure frame outward appearance clean and tidy, favorable anti-corrosion effect.
Aspect the equipment profile: equipment lifting table surface recombination 304 model stainless steel antiskid table tops or anti-skidding aluminium sheet (electrostatic plastic spraying), cabinet panel and backplate adopt electrostatic plastic spraying aluminium sheet or the 304 stainless steel wire drawing plates of surface through overpickling, phosphatization, and the profile top grade is attractive in appearance.
Description of drawings
Fig. 1 is the front view of a kind of screw rod-type accessible lifting platform of the present invention.
Fig. 2 is the birds-eye view by lifting table shown in Figure 1.
Fig. 3 is the screw lifting mechanism scheme drawing of Fig. 1 lifting table.
Fig. 4 is the front view of the automatic turning-board mechanism of Fig. 1 lifting table.
Fig. 5 is the birds-eye view by automatic turning-board mechanism shown in Figure 4.
Fig. 6 is the front view of the safety edge mechanism of Fig. 1 lifting table.
Fig. 7 is the birds-eye view by safety edge shown in Figure 6 mechanism.
Fig. 8 is the front view of the roller plate mechanism of Fig. 1 lifting table.
Fig. 9 is the birds-eye view by roller plate shown in Figure 8 mechanism.
Figure 10 is the front view of the rack rail body of Fig. 1 lifting table.
Figure 11 is the birds-eye view by rack rail body shown in Figure 10.
Drawing reference numeral:
1 is lifting table, and 2 is screw lifting mechanism, and 3 is roller plate mechanism, 4 is the rack rail body, and 5 is roller plate, and 6 is the roller plate inner relying wheel, 7 is motor, and 8 is screw rod, and 9 is to be with synchronously, 10 is the screw rod belt wheel, and 11 is mother nut, and 12 is automatic turning-board mechanism, 13 is turnover panel guide rail conjunction, and 14 is the turnover panel roller, and 15 is the turnover panel link span, 16 is the turnover panel conjunction, 17 is safety edge mechanism, and 18 is safety edge, and 19 is safety net, 20 is horizontal plate, 21 is the expansion tightening wheel conjunction, and 22 is expansion tightening wheel, and 23 is the main roller lining, 24 is last link span, and 25 are following link span.
The specific embodiment
Below in conjunction with drawings and Examples the present invention is elaborated.
Referring to Fig. 1 to Figure 11, a kind of screw rod-type accessible lifting platform of the present invention mainly is made up of lifting table 1, screw lifting mechanism 2, roller plate mechanism 3, rack rail body 4, automatic turning-board mechanism 12 and safety edge mechanism 17, and rack rail body 4 central authorities are provided with lifting table 1.
As shown in Figure 3, screw lifting mechanism 2 by motor 7, two screw rods 8 and connect motor 7 and screw rod 8 be with 9 to form synchronously.Screw rod belt wheel 10 and mother nut 11 are set respectively on the two screw rods 8, screw rod belt wheel 10 twine be with synchronously 9 with motor 7, mother nut 11 connects roller plate 5.
As Fig. 8 and shown in Figure 9, roller plate mechanism 3 is made up of two roller plate 5, some expansion tightening wheel conjunctions 21, some roller plate inner relying wheels 6 and main roller lining 23.Two roller plate 5 are separately fixed at the both sides of lifting table 1, and roller plate is provided with roller plate inner relying wheel 6 in both sides about in the of 5, and roller plate inner relying wheel 6 moves along rack rail body 4.Roller plate 5 is provided with a horizontal plate, and horizontal plate is provided with through hole, and is socketed on the screw rod 8, and the mother nut 11 that is threaded.Expansion tightening wheel conjunction 21 is separately positioned on roller plate 5 outsides, and each expansion tightening wheel conjunction 21 is provided with expansion tightening wheel 22, expansion tightening wheel 22 motion butt rack rail bodies 4.Main roller lining 23 is arranged on the inboard of roller plate inner relying wheel 6.
As shown in Figure 4 and Figure 5, automatic turning-board mechanism 12 is made up of turnover panel guide rail conjunction 13, turnover panel roller 14, turnover panel link span 15 and turnover panel conjunction 16.Turnover panel guide rail conjunction 13 is arranged on a side of rack rail body 4, and the inclined-plane is arranged at the two ends of turnover panel guide rail conjunction 13.Turnover panel link span 15 is articulated in a side of lifting table 1, and the two ends of turnover panel link span 15 articulate turnover panel roller 14 and turnover panel conjunction 16 respectively, and turnover panel link span 15 nationality turnover panel rollers 14 move along turnover panel guide rail conjunction 13.
As shown in Figure 6 and Figure 7, safety edge mechanism 17 is made up of safety edge 18, compression spring and limit switch, compression spring attachment security touch panel 18, limit switch is arranged in the flexible stroke of compression spring, limit switch connects motor 7, when safety edge 18 touched obstacle, compression spring upwards promoted a segment distance and touches limit switch, and motor 7 quits work.Safety net 19 is arranged on lifting table 1 bottom.
As shown in Figure 10 and Figure 11, rack rail body 4 also is equipped with link span 24 and following link span 25, last link span 24 with following link span 25 respectively by screw retention on rack rail body 4.
Accessible elevating platform of the present invention is a kind of vertical lift machinery by the screw drive steel structure frame.This equipment directly fixes on the ground, and construction is simple, can and implement accessible transformation with the supporting installation of new old-fashioned dwelling house of sub-district.Lifting table have noise little, operate steadily, the advantage of multilevel security protection, backplate can exchange according to the needs of passage, and has safe turnover panel and base plate safety net locking function.The equipment appearance covers after with the aluminium alloy panel electrostatic plastic spraying, and waterproof is antirust, good looking appearance.This equipment meets the related request of JG5099-1988 high-altitude operation platform standard.
Screw drive mechanism mainly is that the screw pair of utilizing screw rod and nut to form realizes relative motion, the rotating at control motor, and by bringing the mutual conversion of finishing electric energy and mechanical kinetic energy synchronously, screw rod rotates the mother nut that can drive on the bolted connection roller plate, roller plate is connecting the lifting table part, lifting table is risen and decline in this, the control of stroke can be controlled by the bound bit switch up and down.
Because the present invention is as the equipment that is installed in the public place, its safety is extremely important, has therefore of the present inventionly strengthened stationarity and the safety in the lifting process greatly with lower member.
(1) automatic panel-turnover: in the flat-bed entrance automatic panel-turnover is installed, when platform rose, turnover panel was dug automatically, with platform backplate closure, formed safety door, in case wheel Wheel-chair landing in the lifting process.
(2) safety edge: be equipped with and lifting table safety edge of the same size in the platform bottom, when platform descended, the table top end opening was run into obstacle, safety edge upwards lifts, and touch inducing device, platform stop to descend immediately, in case be pressed onto people or thing, damage.
(3) high platform exit installation divider gate: in high platform exit divider gate is installed, divider gate is equipped with automatic door closer, when platform rises to high platform, triggers the mechanical lock or the electronic lock of high platform divider gate, door-lock opening, and the people can walk out platform.High platform divider gate is under the effect of automatic door closer, and SELF CL puts in place, when high platform is left in platform decline, by mechanical lock or electronic lock, lock high platform divider gate, in case lifting table is when the bottom, the divider gate of high platform outlet place dress is arbitrarily opened, and the people falls from high platform.The lifting mechanism of this lifting table employing vertically-guided overhead highly is 80mm when lifting table is descended, when platform dropped to ground, turnover panel was opened automatically, formed the slope between lifting table and ground automatically, was convenient to take turns Wheel-chair and passed through.So do not need the machine hole during installation of this equipment, the basis flushes with ground and gets final product, and has solved the equipment rack long period of soaking in water, causes the corrosion of equipment steel structure part, influence is used and safe problem, and it is convenient again easily to install.
(4) lifting table adopts the lifting mechanism of vertically-guided, acts on the aluminium section bar guide rail by eight track adjusting wheels on the roller plate, and it is controlled to make platform reach double swerve up and down in lifting process.
(5) when the control circuit et out of order of equipment, utilize manual lowering means to descend safely and land.
(6) lifting table adopts twin screw to drive, and can normally use in 50 ℃～-50 ℃ environment.
The operating process of screw rod-type accessible lifting platform of the present invention is as follows:
Dead work before using: battery of electric power is full of electricity, opens master cock, the device control principle is by the voltage transformer pressure regulation, makes the big voltage of little current control, thereby reaches the rotating of motor.
Uphill process: the user enters on the lifting table restfully, open the key master cock, long by " rising " button, the contact adhesive of control path repeat circuit, slug relay's work, rising control path closure, motor relay work, motor just changes, transmission by synchronous band, about 8 work of two screw rods, be fixed on mother nut 11 on the roller plate 5 by worm drive, reach the effect of lifting lifting table 1.At this moment, be fixed on turnover panel roller 14 on the turnover panel in the process that rises, when touching turnover panel guide rail conjunction 13, turnover panel is packed up, and lifting table rises, to desired height, turnover panel stretches, and the limit switch block contacts with upper limit position switch, and upper limit position switch disconnects, the rising control path disconnects, and lifting table 1 stops to rise.The user can leave lifting table 1 reposefully.Be provided with a travel switch that transfinites in this control path, if damage when the bound bit switch, the lifting table warning that continues to rise is then pointed out.
The decline process: by " decline " button, the contact adhesive of control path repeat circuit, slug relay's work, decline control path closure, motor relay work, motor counter-rotating, by the transmission of synchronous band, about 8 work of two screw rods, by mother nut 11 transmissions, lifting table 1 descends, and turnover panel draws in, until about lower position switch, C/LOOP disconnects, turnover panel launches automatically, shuts power supply, and user's safety is left.
In sum, equipment rack of the present invention partly adopts the heavy in section aluminium section bar, and aluminium shape surface is through acid washing phosphorization, and electrostatic plastic spraying can make equipment steel structure frame outward appearance clean and tidy, favorable anti-corrosion effect.Equipment lifting table surface recombination stainless steel antiskid table top or anti-skidding aluminium sheet (electrostatic plastic spraying), cabinet panel and backplate adopt electrostatic plastic spraying aluminium sheet or the stainless steel wire drawing plate of surface through overpickling, phosphatization, and the profile top grade is attractive in appearance.
Equipment of the present invention directly fixes on the ground, and construction is simple, lifting table have noise little, operate steadily, the advantage of multilevel security protection, backplate can exchange according to the needs of passage, and has safe turnover panel and base plate safety net locking function.
Certainly, those skilled in the art in the present technique field will be appreciated that, the foregoing description only is to be used for illustrating the present invention, and be not as limitation of the invention, as long as in connotation scope of the present invention, all will drop in the scope of claim of the present invention the variation of the foregoing description, modification etc.
Claims (8)
1. a screw rod-type accessible lifting platform comprises lifting table, it is characterized in that: also comprise screw lifting mechanism, roller plate mechanism and rack rail body;
Described rack rail body central authorities are provided with lifting table;
Described screw lifting mechanism comprises motor, two screw rods and the synchronous band that connects motor and screw rod, and screw rod belt wheel and mother nut are set respectively on the two screw rods, and the screw rod belt wheel twines band and motor synchronously, and mother nut connects roller plate;
Described roller plate mechanism comprises two roller plate and roller plate inner relying wheel, and two roller plate are separately fixed at the both sides of lifting table, and roller plate is provided with the roller plate inner relying wheel in both sides up and down, and the roller plate inner relying wheel moves along the rack rail body.
2. screw rod-type accessible lifting platform according to claim 1 is characterized in that: also comprise automatic turning-board mechanism;
Described automatic turning-board mechanism comprises turnover panel guide rail conjunction, turnover panel roller, turnover panel link span and turnover panel conjunction;
Described turnover panel guide rail conjunction is arranged on a side of rack rail body, and the inclined-plane is arranged at the two ends of turnover panel guide rail conjunction; Described turnover panel link span is articulated in a side of lifting table, and the two ends of turnover panel link span articulate turnover panel roller and turnover panel conjunction respectively, and turnover panel link span nationality turnover panel roller moves along turnover panel guide rail conjunction.
3. screw rod-type accessible lifting platform according to claim 1 is characterized in that: also comprise safety edge mechanism;
Described safety edge mechanism comprises safety edge, compression spring and limit switch, compression spring attachment security touch panel, limit switch is arranged in the flexible stroke of compression spring, limit switch connects motor, when safety edge touches obstacle, compression spring upwards promotes a segment distance and touches limit switch, and motor quits work.
4. screw rod-type accessible lifting platform according to claim 1 is characterized in that: described roller plate is provided with horizontal plate, and horizontal plate is provided with through hole, be socketed on the screw rod, and the mother nut that is threaded.
5. screw rod-type accessible lifting platform according to claim 1, it is characterized in that: described roller plate mechanism also comprises several expansion tightening wheel conjunctions, several expansion tightening wheel conjunctions are separately positioned on the roller plate outside, each expansion tightening wheel conjunction is provided with expansion tightening wheel, expansion tightening wheel motion butt rack rail body.
6. screw rod-type accessible lifting platform according to claim 1 is characterized in that: described roller plate mechanism also comprises the main roller lining, and the main roller lining is arranged on the inboard of roller plate inner relying wheel.
7. screw rod-type accessible lifting platform according to claim 1 is characterized in that: described rack rail body also comprises link span and following link span, last link span and following link span respectively by screw retention on the rack rail body.
8. screw rod-type accessible lifting platform according to claim 1 is characterized in that: also comprise safety net, be arranged on the lifting table bottom.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010022839A CN101767757A (en) | 2010-01-15 | 2010-01-15 | Screw rod-type accessible lifting platform |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010022839A CN101767757A (en) | 2010-01-15 | 2010-01-15 | Screw rod-type accessible lifting platform |
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| CN101767757A true CN101767757A (en) | 2010-07-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201010022839A Pending CN101767757A (en) | 2010-01-15 | 2010-01-15 | Screw rod-type accessible lifting platform |
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| CN (1) | CN101767757A (en) |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102530772A (en) * | 2012-02-09 | 2012-07-04 | 南京金垒机械设备有限公司 | Single screw barrier-free vertical lifting platform |
| CN102700894A (en) * | 2012-06-21 | 2012-10-03 | 山东大学 | Upright post type lifting roller conveyor |
| CN102992233A (en) * | 2012-12-17 | 2013-03-27 | 四川省晶源电气设备制造有限公司 | Amorphous strip unloading and transferring vehicle |
| CN103539038A (en) * | 2013-10-30 | 2014-01-29 | 安徽江淮汽车股份有限公司 | Electric threaded-rod lead screw lifting device |
| CN103708321A (en) * | 2012-09-28 | 2014-04-09 | (株)比提工程 | Lifting apparatus |
| CN106915711A (en) * | 2017-03-30 | 2017-07-04 | 浙江大学 | A kind of single lowering or hoisting gear for driving multistage synchronization lifting |
| CN110397288A (en) * | 2019-07-01 | 2019-11-01 | 东莞市华楠骏业机械制造有限公司 | A kind of lifting device driving a variety of workbench liftings |
| CN111792558A (en) * | 2020-08-19 | 2020-10-20 | 北京中交华安科技有限公司 | Lifting equipment and application thereof |
| CN111825007A (en) * | 2020-06-23 | 2020-10-27 | 俞国峰 | Anti-falling lifting device for installation of power equipment |
| CN112209281A (en) * | 2019-07-11 | 2021-01-12 | 佛山市顺德区美的电热电器制造有限公司 | Transmission mechanism, control method of transmission mechanism, cooking appliance and storage medium |
| CN113463904A (en) * | 2021-07-12 | 2021-10-01 | 宁波亿润建设有限公司 | Scaffold wall connecting device |
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| CN1276336A (en) * | 1999-06-07 | 2000-12-13 | 株式会社东芝 | Double decker cage for elevator |
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Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102530772A (en) * | 2012-02-09 | 2012-07-04 | 南京金垒机械设备有限公司 | Single screw barrier-free vertical lifting platform |
| CN102700894A (en) * | 2012-06-21 | 2012-10-03 | 山东大学 | Upright post type lifting roller conveyor |
| CN103708321B (en) * | 2012-09-28 | 2016-04-27 | (株)比提工程 | Jacking system |
| CN103708321A (en) * | 2012-09-28 | 2014-04-09 | (株)比提工程 | Lifting apparatus |
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| CN103539038A (en) * | 2013-10-30 | 2014-01-29 | 安徽江淮汽车股份有限公司 | Electric threaded-rod lead screw lifting device |
| CN106915711A (en) * | 2017-03-30 | 2017-07-04 | 浙江大学 | A kind of single lowering or hoisting gear for driving multistage synchronization lifting |
| CN106915711B (en) * | 2017-03-30 | 2019-12-20 | 浙江大学 | Single-drive multi-stage synchronous lifting device |
| CN110397288A (en) * | 2019-07-01 | 2019-11-01 | 东莞市华楠骏业机械制造有限公司 | A kind of lifting device driving a variety of workbench liftings |
| CN112209281A (en) * | 2019-07-11 | 2021-01-12 | 佛山市顺德区美的电热电器制造有限公司 | Transmission mechanism, control method of transmission mechanism, cooking appliance and storage medium |
| CN112209281B (en) * | 2019-07-11 | 2022-05-24 | 佛山市顺德区美的电热电器制造有限公司 | Transmission mechanism, control method of transmission mechanism, cooking appliance and storage medium |
| CN111825007A (en) * | 2020-06-23 | 2020-10-27 | 俞国峰 | Anti-falling lifting device for installation of power equipment |
| CN111792558A (en) * | 2020-08-19 | 2020-10-20 | 北京中交华安科技有限公司 | Lifting equipment and application thereof |
| CN113463904A (en) * | 2021-07-12 | 2021-10-01 | 宁波亿润建设有限公司 | Scaffold wall connecting device |
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Application publication date: 20100707 |