CN106044662B - High-lift operation car platform leveling device with anti-platform tilt functions - Google Patents
High-lift operation car platform leveling device with anti-platform tilt functions Download PDFInfo
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- CN106044662B CN106044662B CN201610679918.2A CN201610679918A CN106044662B CN 106044662 B CN106044662 B CN 106044662B CN 201610679918 A CN201610679918 A CN 201610679918A CN 106044662 B CN106044662 B CN 106044662B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
- B66F11/00—Lifting devices specially adapted for particular uses not otherwise provided for
- B66F11/04—Lifting devices specially adapted for particular uses not otherwise provided for for movable platforms or cabins, e.g. on vehicles, permitting workmen to place themselves in any desired position for carrying out required operations
- B66F11/044—Working platforms suspended from booms
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- Forklifts And Lifting Vehicles (AREA)
Abstract
High-lift operation car platform leveling device with anti-platform tilt functions, workbench is hinged by axis I and arm I, arm I is hinged by axis II and arm II ..., and nethermost arm X is hinged by axis X+1 and turntable, positive leveling wheel I is respectively equipped at the articulated shaft of each two arm ... until positive leveling wheel X+1；Also reversed leveling wheel I ... is until reversed leveling wheel X+1；The upper end of positive drag-line and reversed drag-line is fixed on workbench；Positive drag-line passes sequentially through positive I outer rim ... of leveling wheel until positive leveling wheel X+1 outer rims lower end is connected on turntable；Reversed drag-line passes sequentially through reversed I inner edge ... of leveling wheel until the reversed inner edges leveling wheel X+1 lower end is connected on turntable.The present invention can adjust workbench and be in horizontality in order to working at height and prevent elliptical gear or job platform from being tumbled by caused by when outer force effect, and structural principle is simple, and manufacturing cost is low, and installation and adjustment are convenient, leveling continuous and stable.
Description
Technical field
The present invention relates to a kind of high-lift operation car platform leveling devices with anti-platform tilt functions, belong to high-altitude
Operation Van's technical field.
Background technology
High-altitude operation vehicle is the equipment to work to high-altitude designated position for transporting personnel, tool and material.Its work
Make platform in high-lift operation car, needs to remain in horizontality, to ensure platform operations personnel steadily safety
Ground carries out working at height, it is therefore desirable to working platform leveling device be arranged, its object is to adjust platform when the arm support elevation angle changes
With the angle of arm support, workbench is made to be in level always.Existing collapsible high-altitude operation vehicle mostly uses parallelogram company
Two kinds of forms of bar leveling or chain sprocket leveling.Two kinds of forms are by pull rod or chain is kept and workbench（Contain
Load）The balance of gravity torque makes workbench be in level.Two kinds of forms have simple in structure, good balance effect excellent
Point, but during working at height, can only ensure that working bucket is not tumbled to gravity torque direction, but then lack guarantor in the reverse direction
Shield, when elliptical gear or job platform are by moment loading with gravity torque opposite direction, the oriented gravity torque of job platform
The possibility that opposite direction is tumbled causes personnel and material to be poured out out of workbench, therefore there are security risks.
Chinese document CN201120571760X discloses a kind of high-lift operation car bucket leveling dress with anti-overturn mechanism
It sets, anti-tipping machine is formed for the levelling device and multigroup parallelogram linkage of multigroup parallelogram linkage composition
Structure.The mechanical work principle is correct, but complicated, and installation and adjustment are very inconvenient, needs that each length of connecting rod is adjusted,
The mechanism itself is a kind of positioning device excessively, and error in length can make mechanism generate internal force and damage, and then lead to failure mechanisms
It may.
Invention content
The technical problem to be solved by the present invention is to overcome defect of the existing technology, provide a kind of simple in structure, peace
Fill easy to adjust, leveling continuous and stable, the high-lift operation car platform leveling device with anti-platform tilting mechanism.
To solve the above problems, the technical scheme is that, a kind of high-altitude operation vehicle with anti-platform tilt functions
The working arm of working platform leveling device, high-altitude operation vehicle is followed successively by arm I, arm II, arm III ... until arm X from top to bottom；Work
Platform is hinged by axis I and arm I, and arm I is hinged by axis II and arm II；The hinge of remaining arm that arm II is hinged by axis III and arm III ...
The relationship of connecing is analogized, and nethermost arm X axises X+1 is hinged with turntable, which is characterized in that at the articulated shaft of each two arm, respectively
Equipped with positive leveling wheel I, positive leveling wheel II ... until positive leveling wheel X+1；At the articulated shaft of each two arm, also set respectively
There are reversed leveling wheel I, reversed leveling wheel II ... until reversed leveling wheel X+1；Positive drag-line is respectively fixed on workbench
The upper end of upper end and reversed drag-line；The forward direction drag-line pass sequentially through positive I outer rim of leveling wheel, positive II outer rim ... of leveling wheel until
Positive leveling wheel X+1 outer rims, the lower end of the forward direction drag-line are connected on the turntable；The reversed drag-line passes sequentially through reversed leveling
I inner edge, reversed II inner edge ... of leveling wheel are taken turns until the reversed inner edges leveling wheel X+1, the lower end of the reversed drag-line are connected to described turn
On platform.
The present invention has following prioritization scheme：
Transition wheel can be respectively arranged with by often saving on working arm, respectively the straight transition wheel X of transition wheel I, transition wheel II ...；With
To adjust trend of the positive drag-line between two positive leveling wheels；Or to adjust reversed drag-line two reversed leveling wheels it
Between trend.
" lower end of positive drag-line is connected on the turntable " and " lower end of reversed drag-line is connected on the turntable "
Connection type is：Regulating device I and regulating device II are provided on the turntable；The lower end of the forward direction drag-line is connected to the tune
On regulating device I；The lower end of the reversed drag-line is connected in the regulating device II.
The regulating device I is by the rotatable nut on turntable, and the screw rod that is fixedly connected with positive drag-line lower end
Composition；The regulating device II is by the rotatable nut on turntable, and the screw rod group that is fixedly connected with reversed drag-line lower end
At.
The diameter of each positive leveling wheel is equal, and the diameter of each reversed leveling wheel is equal.
The forward direction drag-line, reversed drag-line, can be freely curved in two dimensional surface using flexible materials such as steel wire rope or chains
It is bent.
In other words, the present invention proposes a kind of using positive drag-line, reversed drag-line, positive leveling wheel group, reversed leveling wheel
The high-lift operation car platform leveling device with anti-platform tilt functions that group, transition wheel group, regulating device are formed, with
For the high-altitude operation vehicle of 3 sections of working arms：It is provided with positive drag-line, reversed drag-line, positive leveling wheel I, positive leveling wheel II, just
To leveling wheel III, positive leveling wheel IV, reversed leveling wheel I, reversed leveling wheel II, reversed leveling wheel III, reversed leveling wheel IV, work
Make platform, arm I, arm II, arm III, turntable, axis I, axis II, axis III, axis IV, transition wheel I, transition wheel II, transition wheel III, transition wheel
IV, transition wheel V, transition wheel VI, regulating device I, regulating device II；Workbench, positive leveling wheel I, reversed leveling wheel I, arm
I is hinged by axis I, and arm I, positive leveling wheel II, reversed leveling wheel II, arm II are hinged by axis II, arm II, positive leveling wheel
III, reversed leveling wheel III, arm III are hinged by axis III, and arm III, positive leveling wheel IV, reversed leveling wheel IV, turntable pass through axis IV
It is hinged；Transition wheel I is hinged with arm I, and transition wheel II, transition wheel III and arm II are hinged, and transition wheel IV, transition wheel V and arm III are cut with scissors
It connects, transition wheel VI is hinged with turntable；Positive drag-line one end is fixedly connected with workbench, passes through positive I outer rim of leveling wheel, forward direction
II outer rim of leveling wheel, positive III outer rim of leveling wheel, positive IV outer rim of leveling wheel, the other end is connect with turntable passes through regulating device I
Connection；Reversed drag-line one end is fixedly connected with workbench, passes through reversed I inner edge of leveling wheel, reversed II inner edge of leveling wheel, reversely
III inner edge of leveling wheel, reversed IV inner edge of leveling wheel, the other end are connect with turntable by regulating device II.
Forward direction leveling wheel I of the present invention, positive leveling wheel II, positive leveling wheel III, positive IV diameter phase of leveling wheel
Deng a diameter of 2R；Reversed leveling wheel I, reversed leveling wheel II, reversed leveling wheel III, reversed IV diameter of leveling wheel are equal, a diameter of
2r；R can be equal to r.
Transition wheel of the present invention, it is therefore intended that adjust the trend and arrangement of drag-line, ensure drag-line in luffing range of cantilever support mistake
The wheel of envelope leveling always is without departing from for convenience of other component mounting arrangements, transition wheel quantity can increase and decrease, position and half in journey
Diameter can change.Transition wheel I, transition wheel II change the trend of reversed drag-line, and reversed drag-line is made to be wrapped always in I amplitude changing process of arm
The reversed leveling wheel of network II is without departing from transition wheel III, transition wheel IV change the trend of reversed drag-line, and reversed drag-line is made to become in arm II
During width always the reversed leveling wheel of envelope III without departing from transition wheel IV, transition wheel V change the trend of positive drag-line, make just
To drag-line in III amplitude changing process of arm always envelope forward direction leveling wheel IV without departing from；Transition wheel VI changes walking for positive drag-line
To making positive drag-line facilitate installation and adjustment.
Regulating device is arranged in the end or middle part of forward direction drag-line of the present invention and reversed drag-line, by regulating device I,
The length for adjusting positive drag-line keeps workbench horizontal relative to the earth holding；By regulating device II, reversed drag-line is adjusted
Length makes workbench reversely be tensioned, and the trend for inhibiting workbench reversely to tumble realizes anti-platform tilt functions.
Operation principle：By geometrical principle it is found that when arm I is around II luffing any rotation θ counterclockwise of axis, due to forward direction
Leveling wheel I and positive II diameter of leveling wheel are 2R, and the length of positive drag-line is constant, and positive leveling wheel I, positive leveling wheel
II, I relative position of arm is constant, and positive drag-line releases the length of θ * R on positive leveling wheel II, while in positive leveling wheel I
Coenvelope when workbench being made to rotate clockwise angle, θ, keeps horizontal into the length of θ * R relative to the earth.When arm I is around axis II
When luffing any rotation θ clockwise, positive drag-line in positive II coenvelope of leveling wheel into the length of θ * R, while in forward direction
The length that θ * R are released on leveling wheel I when making workbench rotated counterclockwise by angle θ, keeps horizontal relative to the earth.
When arm II is around III luffing any rotation θ counterclockwise of axis, due to positive leveling wheel I, positive leveling wheel II, just
It is 2R to III diameter of leveling wheel, the length of positive drag-line is constant, and positive leveling wheel I, positive leveling wheel II, positive leveling wheel
III, arm I, II relative position of arm are constant, and positive drag-line releases the length of θ * R on positive leveling wheel III, in positive leveling wheel
Length is constant on II, while in positive I coenvelope of leveling wheel into the length of θ * R, when workbench being made to rotate clockwise angle, θ,
It is flat relative to the earth beginning water holding.When arm II is around III luffing any rotation θ clockwise of axis, positive drag-line is in positive leveling wheel
III coenvelope is into the length of θ * R, and length is constant on positive leveling wheel II, while the length of θ * R is released on positive leveling wheel I
Degree when making workbench rotated counterclockwise by angle θ, keeps horizontal relative to the earth.
When arm III is around IV luffing any rotation θ counterclockwise of axis, due to positive leveling wheel I, positive leveling wheel II, just
It is 2R to leveling wheel III, positive IV diameter of leveling wheel, the length of positive drag-line is constant, and positive leveling wheel I, positive leveling wheel
II, positive leveling wheel III, transition wheel IV, transition wheel V, positive leveling wheel IV, arm I, arm II, III relative position of arm are constant, positive
Drag-line releases the length of θ * R on leveling wheel IV, and length is constant on positive leveling wheel III and positive leveling wheel II, while
Positive I coenvelope of leveling wheel when workbench being made to rotate clockwise angle, θ, is put down into the length of θ * R relative to the earth beginning water holding.
When arm III is around IV luffing any rotation θ clockwise of axis, positive drag-line is in positive IV coenvelope of leveling wheel into the length of θ * R
Degree, length is constant on positive leveling wheel III and positive leveling wheel II, while the length of θ * R is released on positive leveling wheel I,
When making workbench rotated counterclockwise by angle θ, keep horizontal relative to the earth.
Reversed drag-line of the present invention is identical as the positive operation principle of drag-line.
Forward direction drag-line of the present invention, reversed drag-line, can be in two dimensional surfaces using the flexible materials such as steel wire rope or chain
Interior free bend.Flexible material can absorb generated impact during luffing range of cantilever support, and movement is more stable.
The high-lift operation car platform leveling device of anti-platform tilt functions of the present invention, sends out in use
Raw workbench tilts, by the length for adjusting positive drag-line and reversed drag-line, you can align workbench, relative to the earth
Keep horizontal.
Levelling device leveling process continuous and stable of the present invention, and in the case where workbench tumbles trend
Workbench can be held by negative direction automatically, prevent workbench from tumbling.
Compared with the prior art, the present invention has the following advantages：Workbench can be adjusted and be in horizontality in order to height
Idle job, and can prevent elliptical gear or job platform from being tumbled by caused by when outer force effect, simple in structure, manufacture
At low cost, installation and adjustment are convenient, leveling continuous and stable.
Description of the drawings
Fig. 1 is the structural schematic diagram of one embodiment of the invention；
Fig. 2 be I in Fig. 1 at enlarged structure schematic diagram；
Fig. 3 be II in Fig. 1 at enlarged structure schematic diagram；
Fig. 4 be III in Fig. 1 at enlarged structure schematic diagram.
In figure：Positive drag-line 1, reversed drag-line 2, positive leveling wheel I 3, positive leveling wheel II 4, positive leveling wheel III 5, just
To leveling wheel IV 6, reversed leveling wheel I 7, reversed leveling wheel II 8, reversed leveling wheel III 9, reversed leveling wheel IV 10, workbench
11, arm I 12, arm II 13, arm III 14, turntable 15；Axis I 16, axis II 17, axis III 18, axis IV 19, transition wheel I 20, transition wheel II
21, transition wheel III 22, transition wheel IV 23, transition wheel V 24, transition wheel VI 25, regulating device I（Screw rod, nut）26, adjust dress
Set II 27（Screw rod, nut）, the screw rod 28 in regulating device I, the screw rod 29 in regulating device II.
Specific implementation mode
Technical scheme of the present invention is further described in detail with reference to the accompanying drawings and examples.
Embodiment 1, the high-lift operation car platform leveling device with anti-platform tilt functions, as shown in Figure 1, for this
The structural schematic diagram of one embodiment of invention.The present embodiment is provided with positive steel wire rope 1, reversed steel wire rope 2, positive leveling wheel I
3, positive leveling wheel II 4, positive leveling wheel III 5, positive leveling wheel IV 6, reversed leveling wheel I 7, reversed leveling wheel II 8, reversed tune
Flat wheel III 9, reversed leveling wheel IV 10, workbench 11, arm I 12, arm II 13, arm III 14, turntable 15, axis I 16, axis II 17, axis
III 18, axis IV 19, transition wheel I 20, transition wheel II 21, transition wheel III 22, transition wheel IV 23, transition wheel V 24, transition wheel VI 25,
Adjusting nut I 26, adjusting nut II 27；Workbench 11, positive leveling wheel 3, reversed leveling wheel I 7, arm I 12 are cut with scissors by axis I 16
It connects, arm I 12, positive leveling wheel II 4, reversed leveling wheel II 8, arm II 13 are hinged by axis II 17, arm II 13, positive leveling wheel III
5, reversed leveling wheel III 9, arm III 14 are hinged by axis III 18, arm III 14, positive leveling wheel IV 6, reversed leveling wheel IV 10, turntable
15 is hinged by axis IV；Transition wheel I 20 is hinged with arm I 12, and transition wheel II 21, transition wheel III 22 and arm II 13 are hinged, transition wheel
IV 23, transition wheel V 24 is hinged with arm III 14, and transition wheel VI 25 is hinged with turntable 15；1 one end of positive steel wire rope and workbench
11 are fixedly connected, and pass through positive I 3 outer rim of leveling wheel, positive II 4 outer rim of leveling wheel, positive III 5 outer rim of leveling wheel, positive leveling
IV 6 outer rims are taken turns, the other end passes through regulating device I 26 with turntable 15（Legend is screw rod, nut）Connection；Reversed 2 one end of steel wire rope
It is fixedly connected with workbench 11, in I inner edge 7 of reversed leveling wheel, reversed II 8 inner edge of leveling wheel, reversed leveling wheel III 9
Edge, reversed IV 10 inner edge of leveling wheel, the other end pass through regulating device II 27 with turntable 15（Legend is screw rod, nut）Connection.
Positive leveling steel wire rope is arranged in reversed anti-tipping steel wire rope in two parallel planes in the present embodiment.
Positive leveling wheel I 3, positive leveling wheel II 4, positive leveling wheel III 5, positive IV 6 diameter of leveling wheel in the present embodiment
It is equal；Reversed leveling wheel I 7, reversed leveling wheel II 8, reversed leveling wheel III 9, reversed IV 10 diameter of leveling wheel are equal.
Transition wheel I 20, transition wheel II 21 change the trend of reversed steel wire rope 2 in the present embodiment, make reversed steel wire rope 2 in arm
In I 12 amplitude changing process always the reversed leveling wheel of envelope II 8 without departing from transition wheel III 22, transition wheel IV 23 change reversed steel wire
Rope 2 trend, make reversed steel wire rope 2 in II 13 amplitude changing process of arm always the reversed leveling wheel III 9 of envelope without departing from transition wheel
IV 23, transition wheel V 24 changes the trend of positive steel wire rope 1, makes the envelope always in III 14 amplitude changing process of arm of positive steel wire rope 1
Positive leveling wheel IV 6 without departing from；Transition wheel VI 25 changes the trend of positive drag-line, and positive drag-line is made to facilitate installation and adjustment.
Regulating device I 26 is arranged in 1 turntable connecting pin of positive steel wire rope in the present embodiment（Legend is screw rod, nut）, pass through
Adjusting nut screws in the length of screw rod, adjusts the length of positive drag-line, keeps workbench horizontal relative to the earth holding；Reversed steel
Regulating device II 27 is arranged in 2 turntable connecting pin of cord（Legend is screw rod, nut）, the length of screw rod is screwed in by adjusting nut,
The length for adjusting reversed drag-line, makes workbench reversely be tensioned, and the trend for inhibiting workbench reversely to tumble realizes that anti-platform inclines
Turn over function.
Transition wheel of the present invention, it is therefore intended that adjust the trend and arrangement of drag-line, ensure drag-line in luffing range of cantilever support mistake
The wheel of packet leveling always is without departing from for convenience of other component mounting arrangements, transition wheel quantity can increase and decrease, position and radius in journey
It can change.
Forward direction drag-line of the present invention, reversed drag-line are using the flexible materials such as chain or steel wire rope.Flexible material can be inhaled
Receiving luffing range of cantilever support, generated impact, movement are more stable in the process.
The structure leveling process that the present invention states is continuous, stable, and the case where workbench tumbles trend
Under can automatic negative direction pull workbench, prevent workbench from tumbling.
The high-lift operation car platform leveling device for the anti-platform tilt functions that the present invention states, occurs in use
Workbench tilts, and the length of adjusting screw rod is screwed in by rotating adjusting nut, adjusts the length of positive drag-line and reversed drag-line,
It is horizontal relative to the earth holding that workbench can be realized, and prevent workbench from tumbling.
The regulating device of the present embodiment is placed on turntable end, can also be placed in the middle part of workbench end or drag-line, to facilitate peace
Dress is adjusted to principle, and the device of all adjustable guy cable lengths such as screw rod, leading screw, back-off can be used in regulating device.
Above example is only the explanation rather than limitation of the present invention to the specific implementation mode of the present invention, related skill
The technical staff in art field in the case where not departing from the principle and scope of the present invention, can also make it is various transformation and variation and
Corresponding equivalent technical solution is obtained, therefore all equivalent technical solutions should be included into the patent protection model of the present invention
It encloses.
Claims (3)
1. a kind of high-lift operation car platform leveling device with anti-platform tilt functions, the working arm of high-altitude operation vehicle is certainly
Arm I, arm II, arm III ... are followed successively by under above until arm X；Workbench is hinged by axis I and arm I, and arm I passes through axis II and arm II
It is hinged；Arm II is hinged by axis III and arm III ..., and the hinged relationship of remaining arm is analogized, and nethermost arm X passes through axis X+1 and turntable
It is hinged, which is characterized in that at the articulated shaft of each two arm, to be respectively equipped with positive leveling wheel I, positive leveling wheel II ... until just
To leveling wheel X+1；At the articulated shaft of each two arm, reversed leveling wheel I, reversed leveling wheel II ... are further respectively had until reversed
Leveling wheel X+1；The upper end of the upper end and reversed drag-line of positive drag-line is respectively fixed on workbench；The forward direction drag-line leads to successively
Positive I outer rim of leveling wheel, positive II outer rim ... of leveling wheel are crossed until positive leveling wheel X+1 outer rims, the lower end of the forward direction drag-line connect
It is connected on the turntable；The reversed drag-line passes sequentially through reversed I inner edge of leveling wheel, reversed II inner edge ... of leveling wheel until reversed adjust
The flat inner edges wheel X+1, the lower end of the reversed drag-line is connected on the turntable；
Transition wheel can be respectively arranged with by often saving on working arm, respectively transition wheel I, transition wheel II ... are until transition wheel Y；To
Adjust trend of the positive drag-line between two positive leveling wheels；Or to adjust reversed drag-line between two reversed leveling wheels
Trend；
The connection of " lower end of positive drag-line is connected on the turntable " and " lower end of reversed drag-line is connected on the turntable "
Mode is：Regulating device I and regulating device II are provided on the turntable；The lower end of the forward direction drag-line is connected to the adjusting dress
It sets on I；The lower end of the reversed drag-line is connected in the regulating device II；
The regulating device I is by the rotatable nut on turntable, and the screw rod being fixedly connected with positive drag-line lower end forms；
The regulating device II is by the rotatable nut on turntable, and the screw rod being fixedly connected with reversed drag-line lower end forms.
2. the high-lift operation car platform leveling device according to claim 1 with anti-platform tilt functions, special
Sign is that the diameter of each positive leveling wheel is equal；The diameter of each reversed leveling wheel is equal.
3. the high-lift operation car platform leveling device according to claim 1 or 2 with anti-platform tilt functions,
Be characterized in that, it is described forward direction drag-line, reversed drag-line use steel wire rope or chain, can in two dimensional surface free bend.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610679918.2A CN106044662B (en) | 2016-08-17 | 2016-08-17 | High-lift operation car platform leveling device with anti-platform tilt functions |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610679918.2A CN106044662B (en) | 2016-08-17 | 2016-08-17 | High-lift operation car platform leveling device with anti-platform tilt functions |
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| CN106044662A CN106044662A (en) | 2016-10-26 |
| CN106044662B true CN106044662B (en) | 2018-08-07 |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106599544B (en) * | 2016-11-24 | 2022-11-15 | 徐工集团工程机械股份有限公司 | Method for calculating counterforce of support leg of overhead working truck and method for leveling and controlling rotary table |
| CN106829754B (en) * | 2017-03-24 | 2018-05-22 | 徐州海伦哲专用车辆股份有限公司 | A kind of insulating overhead operating vehicle and its automatic amplitude limit method of insulated working platform |
| CN111620277A (en) * | 2020-05-22 | 2020-09-04 | 杭州赛奇机械股份有限公司 | Chain-leveling telescopic swing arm and mast cantilever type lifting platform |
| CN112265945B (en) * | 2020-10-30 | 2022-06-24 | 徐州徐工随车起重机有限公司 | Platform tipping prevention device for overhead working truck |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN2641008Y (en) * | 2003-08-11 | 2004-09-15 | 江苏省机电研究所有限公司 | Horizontal trim device for job platform of altitude job vehicle |
| US20120241250A1 (en) * | 2011-03-25 | 2012-09-27 | Eakin George R | Aerial Work Platforms and Aerial Work Platform Assemblies Comprised of Polymerized Cycloolefin Monomers |
| CN102910561B (en) * | 2012-10-31 | 2015-05-20 | 南车四方车辆有限公司 | Aerial work platform and autorail |
| CN203486866U (en) * | 2013-09-17 | 2014-03-19 | 上海振华重工(集团)沈阳电梯有限公司 | Automobile hoisting hydraulic aerial cage balancing device |
| CN103641046B (en) * | 2013-12-10 | 2016-03-02 | 长沙中联消防机械有限公司 | Connection Block, aerial platform and working bucket leveling system thereof and method for arranging |
| CN206088956U (en) * | 2016-08-17 | 2017-04-12 | 徐州海伦哲专用车辆股份有限公司 | High altitude construction car work platform levelling device with prevent platform function of tumbling |
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