CN104477815A - Platform-retractable hydraulic lift - Google Patents
Platform-retractable hydraulic lift Download PDFInfo
- Publication number
- CN104477815A CN104477815A CN201410827078.0A CN201410827078A CN104477815A CN 104477815 A CN104477815 A CN 104477815A CN 201410827078 A CN201410827078 A CN 201410827078A CN 104477815 A CN104477815 A CN 104477815A
- Authority
- CN
- China
- Prior art keywords
- platform
- hydraulic
- disc
- manned
- chassis
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- 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
- B66F7/00—Lifting frames, e.g. for lifting vehicles; Platform lifts
- B66F7/06—Lifting frames, e.g. for lifting vehicles; Platform lifts with platforms supported by levers for vertical movement
- B66F7/065—Scissor linkages, i.e. X-configuration
- B66F7/0666—Multiple scissor linkages vertically arranged
-
- 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
- B66F7/00—Lifting frames, e.g. for lifting vehicles; Platform lifts
- B66F7/06—Lifting frames, e.g. for lifting vehicles; Platform lifts with platforms supported by levers for vertical movement
- B66F7/08—Lifting frames, e.g. for lifting vehicles; Platform lifts with platforms supported by levers for vertical movement hydraulically or pneumatically operated
-
- 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
- B66F7/00—Lifting frames, e.g. for lifting vehicles; Platform lifts
- B66F7/28—Constructional details, e.g. end stops, pivoting supporting members, sliding runners adjustable to load dimensions
-
- 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
- B66F2700/00—Lifting apparatus
- B66F2700/09—Other lifting devices
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- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mechanical Engineering (AREA)
- Structural Engineering (AREA)
- Forklifts And Lifting Vehicles (AREA)
Abstract
The invention aims to provide a platform-retractable hydraulic lift, which mainly comprises three parts, i.e. a chassis, a connecting rod mechanism and a manned platform. A hydraulic driving mode is adopted, the basic working principle is that the hydraulic list moves to a specified position, motive power is provided by a motor to drive a hydraulic pump, and then a hydraulic cylinder works to further drive the connecting rod mechanism to be unfolded to lift the platform. After the platform reaches a specified operation height, power is provided by the hydraulic motor according to operation needs, then gears and a rack are driven to rotate to further extend the platform, and meanwhile, a counterweight platform is driven by the gears and the rack to reversely extend. According to the platform-retractable hydraulic lift, the movement of the whole lift is reduced, the problem of limited horizontal operation space of various kinds of lifting operation in an enterprise is effectively solved, and the operation range of an operator is widened; the counterweight platform driven by the gears and the rack reversely extends, so that center-of-gravity shift is effectively prevented, and the safety and the stability of the manned platform are ensured.
Description
Technical field
What the present invention relates to is a kind of lifting mechanism.
Background technology
Hydraulic hoist product is divided into the lifting of crank arm type hydraulic hoist, fork hydraulic, column type hydraulic hoist, straight arm type hydraulic hoist according to mode of operation.Hydraulic hoist is the regeneration product of folding-jib elevator, fork type elevator.The installation and maintenance etc. of station, harbour, airport, hotel, post and telecommunications, municipal gardens, grain depot, cleaning company, the decoration of the public building shop front, finishing or electric system can be widely used in.Elevator generally have lightweight, start from walking, electricity, large from supporting leg, simple to operate, the scope of operation, particularly can carry out the advantages such as aloft work by leaping over obstacles.
Platform telescoping hydraulic hoist mainly realizes the function of lifting by the pressure actuation of hydraulic oil, and scissor physical construction makes elevator hoist higher stability; Telescoping platform makes aloft work scope larger and is applicable to many people operation simultaneously.This makes aloft work efficiency higher, and safety is more secure.
Summary of the invention
The object of the present invention is to provide the difficult problem effectively solving all kinds of lift work levels operation limited space in enterprise, expand the platform telescoping hydraulic hoist of the opereating specification of operator.
The object of the present invention is achieved like this:
Platform telescoping hydraulic hoist of the present invention, is characterized in that: comprise chassis portion, connecting rod mechanism, manned platform;
Chassis portion comprises top bottom-disc, low bottom-disc, cover plate, cover plate is fixed on low bottom-disc, supported by ball between top bottom-disc and cover plate, cover plate is installed intermeshing chassis big gear wheel and chassis miniature gears, low bottom-disc installs piston motor, piston motor is by chassis axle connecting base plate big gear wheel, and the pinion shaft of chassis miniature gears is connected by two flat key with top bottom-disc;
Manned platform comprises manned sliding stand, counterweight sliding stand, steel plate, support, Interal fixation is on support and be positioned at above support, steel plate is arranged the first track and the second track, manned sliding stand and counterweight sliding stand are separately positioned on the first track and the second track, gear motor installed by support, below manned sliding stand and counterweight sliding stand, the first tooth bar and the second tooth bar are installed respectively, the output shaft of gear motor connects big gear wheel through steel plate, big gear wheel engages with the first tooth bar and the second tooth bar respectively, manned sliding stand and counterweight sliding stand stretch out round about or retract under the driving of gear motor,
Connecting rod mechanism is that two groups of structures are identical, the parallel X-type connecting rod arranged, the two ends of two groups of X-type connecting rods connect top bottom-disc and support respectively, and two groups of X-type connecting rods install hydraulic actuating cylinder respectively, and X-type connecting rod extends or compresses under the driving of hydraulic actuating cylinder.
Advantage of the present invention is: The present invention reduces elevator and move integrally, and effectively solves a difficult problem for all kinds of lift work levels operation limited space in enterprise, expands the opereating specification of operator.Adopt the counterweight platform of rack pinion oppositely to stretch out, effectively prevent centre-of gravity shift, ensure manned platform safety and stability.
Accompanying drawing explanation
Fig. 1 is front view of the present invention;
Fig. 2 is front view partial enlarged drawing I;
Fig. 3 is front view partial enlarged drawing II;
Fig. 4 is left view of the present invention;
Fig. 5 is left view partial enlarged drawing III
Fig. 6 is left view partial enlarged drawing IV.
Detailed description of the invention
Below in conjunction with accompanying drawing citing, the present invention is described in more detail:
Composition graphs 1 ~ 6, the invention discloses a kind of platform telescoping hydraulic hoist, be applicable to rise and amount to the people of below 1t or weight to 10m eminence, and plateau levels direction can be stretched according to job requirements at operation height place, decrease elevator to move integrally, in effective solution enterprise, a difficult problem for all kinds of lift work levels operation limited space, expands the opereating specification of operator.This platform telescoping hydraulic hoist forms primarily of 3 parts: chassis, connecting rod mechanism and manned platform.It adopts hydraulic-driven, and basic functional principle is that hydraulic hoist moves to assigned address, provides prime power by motor, drives Hydraulic Pump, makes hydraulic cylinder works, and then drivening rod mechanism, makes it launch, and platform rises.Platform according to operation needs, provides power by HM Hydraulic Motor after arriving assignment height, the transmission of driven wheel tooth bar, and then platform is stretched out, adopt the counterweight platform of rack pinion oppositely to stretch out simultaneously, effectively prevent centre-of gravity shift, ensure manned platform safety and stability.
Platform telescoping hydraulic hoist is by wheel 1, wheel fork 2, wheel fork captive nut 3, packing ring 4, low bottom-disc 5, lock screw 6, cover plate 7, connecting rod 8, ball 9, top bottom-disc 10, hydraulic actuating cylinder 11, hydraulic actuating cylinder mounting rod 12, slide-and-guide bar 13, gear motor 14, tooth bar 15, fix screw 16, big nut 17, packing ring 18, big gear wheel 19, platform axle 20, copper band 21, felt collar 22, roller bearing end cap 23, felt collar 24, head bolts 25, bearing 26, guardrail 27, upper support column 28, end face nut 29, pad 30, tie bolt 31, platform sliding bar 32, positive stop 33, pinion shaft 34, nut 35, pad M1636, compression indicator 37, control desk 38, oil sources 39, key 40, sleeve 41, chassis axle 42, piston motor 43, locating bush 44, lower support post 45, ball 46, counterweight sliding stand 47, manned sliding stand 48, erecting frame 49, bolt of rear end plate 50, connecting rod shaft 51, fluted nut 52, pad 53, spring cotter 54, deep floor 55, sleeve 56, sleeve 57, welding block 58, end cap 59, tightening screw 60, bearing 61, felt collar 62, wheel shaft 63, supporting leg 64, coupler 65, chassis miniature gears 66, chassis big gear wheel 67, two composition such as parts such as flat key 68 grade.
Platform telescoping hydraulic hoist is by chassis, and connecting rod mechanism and manned platform three part form.Concrete installation relation is as follows:
Chassis portion by low bottom-disc 5, cover plate 7, top bottom-disc 10 3 part form, wheel 1 is loaded on low bottom-disc 5 four angles by wheel fork 2 by wheel fork captive nut 3 and packing ring 4, each wheel shaft 63 is furnished with matched bearings 61, seals with felt collar 62, by tightening screw 60, end cap 59 is fixed.Being used for the supporting leg 64 of positioning supports is connected on low bottom-disc 5 by welding block 58.Oil sources is installed in low bottom-disc 5 inside, and piston motor 43 is connected with chassis axle 42 by coupler 65, and be connected by key 40 between chassis axle 42 with coupler 65, sleeve 41 is equipped with in outside, and piston motor 43 is connected with chassis big gear wheel 67 through cover plate 7 by coupler 65.Chassis big gear wheel 67 rotarily drives chassis miniature gears 66, chassis miniature gears 66 is connected by two flat key 68 makes top bottom-disc 10 around its central rotation, centered by the little gear teeth 66 axis of chassis, welding cylindricality support tube, setting up ball 9 for reducing friction in the cooperation place of upper doffing.Fixed by lock screw 6 between low bottom-disc 5 and cover plate 7, for strengthening the intensity of cover plate 7, inside chassis is evenly arranged 5 lower support posts 45 with locating bush 44, and nut 35 and pad 36 coordinate with it.Top bottom-disc 10 installing connecting rods mechanism, is equipped with limiting stopper 33 and slides over position to ensure that slip is unlikely.For ease of the control of whole hydraulic efficiency pressure system, guided on the welding control desk 38 of low bottom-disc 5 tailstock by oil sources 39 by oil pipe, platform is provided with compression indicator 37, can control the lifting of lift car easily, rotates with flexible.
When rising the highest, X-type connecting rod extreme angles is 60o.For ensureing the stationarity of hydraulic lift truck, adopt Double row connecting rod mechanism, centre is connected by connecting rod shaft 51, asynchronous to prevent producing two row's connecting rod mechanisms during work, makes hydraulic hoist produce.Connecting rod mechanism comprises 32, connecting rod altogether, by fluted nut 52 between connecting rod 32, pad 53, parts such as spring cotter 54 grade connect, wherein 4 for installing the special hydraulic actuating cylinder mounting rod 12 of hydraulic actuating cylinder 11, connecting rod mechanism upper one end is fixed by the lower end of axle and manned platform, and the other end is connected by the sliding rail of platform sliding bar 32 with manned, to make connecting rod rapid deployment.Hydraulic actuating cylinder mounting rod 12 is different from plain connecting rod 8 structure, while the normal location and installation of guarantee hydraulic actuating cylinder 11 and work, for ensureing that the intensity of hydraulic actuating cylinder installation shaft reaches job requirement, sleeve 56 carries out welding deep floor 55, to ensure the requirement of strength of axle.
The manned platform with Telescopic makes arrive the position of specifying easily when operating personnel works.For coupler link mechanism deploying and flexible time shift in position and keep the stable of whole platform, twice track is devised in manned platform bottom, slide-and-guide bar 13 is slided in orbit, slide-and-guide bar 13 is fixed on end face by end face nut 29 and pad 30, uniform 8 upper support columns 28 in platform.Manned platform is made up of 3 parts: topmost is guardrail 27 and platform welding; Steel plate outstanding below installs tooth bar 15 by fix screw 16, engage with the big gear wheel 19 being arranged on bottom, big nut 17 and packing ring 18 coordinate with platform axle 20, for ensureing that bearing 26 normally works, be furnished with copper band 21 and felt collar 22, roller bearing end cap 23 is fixed by head bolts 25 and felt collar 24.Gear motor 14 is loaded on erecting frame 49, and erecting frame 49 is fixed on below platform by bolt of rear end plate 50.There is provided power by gear motor 14 during work, big gear wheel 19 is rotated.Band carry-over bar 15 makes manned slide platform 48 stretch out, the centre-of gravity shift of hydraulic lift truck when stretching out for preventing manned sliding stand 48, devise counterweight platform 47, adopt gear double rack engagement system, namely while manned platform 48 stretches out, big gear wheel 19 drives opposite side tooth bar oppositely to stretch out, and tooth bar is fixed on counterweight platform 47 by fix screw 16 and stretches out, thus counterweight platform 47 oppositely stretches out, to ensure the balance of hydraulic lift truck.Stretch out track and adopt oat tail groove structure, and ensure location.At the inner embedding ball 46 of counterweight platform 47 to reduce friction force when platform stretches out.
Groundwork: hydraulic hoist moves to assigned address, prime power is provided by motor, drive Hydraulic Pump, make hydraulic cylinder works, and then drivening rod mechanism, make it launch, platform rises, after arriving specified altitude assignment, platform and counterweight platform stretch out simultaneously, not only arrive assignment position but also ensure resistance to overturning.Be specially:
1) walking and wheel steering action are specially: traveling gear drives employing two fluid motor-driven, HM Hydraulic Motor is directly installed on drive wheel, diagonal angle is installed, namely four wheels 1 that the wheel fork 2 under chassis is connected by wheel fork captive nut 3, two CD-ROM drive motor are installed at diagonal angle, make two actives two in four wheels driven, thus drive platform to realize longitudinally walking and laterally walking.
2) chassis spinning movement is specially: drive HM Hydraulic Motor 43 at the control desk 38 of chassis afterbody, cover plate 7 is installed gear mechanism and connects with the piston motor 43 of low bottom-disc 5, and driven gear rotates.According to actual conditions, utilize control desk 38 to make chassis rotate to work and be applicable to angle.
3) lifting action is specially: primer fluid pressing system control cock makes hydraulic actuating cylinder 11 stretch out, and promote X-type connecting rod and raise, thus make manned platform increase, when rising the highest, X-type connecting rod extreme angles is 60o.
4) the flexible of manned platform is specially: provide power by HM Hydraulic Motor 14, big gear wheel 19 is rotated, band carry-over bar 15 moves, and then platform is stretched out, the centre-of gravity shift of hydraulic lift truck when stretching out for preventing manned platform, while manned platform stretches out, the counterweight platform of same employing pinion and rack oppositely stretches out simultaneously, to ensure the balance of hydraulic lift truck, makes arrive the position of specifying easily when artificial installation, expand operating range, increase work efficiency.
Claims (1)
1. platform telescoping hydraulic hoist, is characterized in that: comprise chassis portion, connecting rod mechanism, manned platform;
Chassis portion comprises top bottom-disc, low bottom-disc, cover plate, cover plate is fixed on low bottom-disc, supported by ball between top bottom-disc and cover plate, cover plate is installed intermeshing chassis big gear wheel and chassis miniature gears, low bottom-disc installs piston motor, piston motor is by chassis axle connecting base plate big gear wheel, and the pinion shaft of chassis miniature gears is connected by two flat key with top bottom-disc;
Manned platform comprises manned sliding stand, counterweight sliding stand, steel plate, support, Interal fixation is on support and be positioned at above support, steel plate is arranged the first track and the second track, manned sliding stand and counterweight sliding stand are separately positioned on the first track and the second track, gear motor installed by support, below manned sliding stand and counterweight sliding stand, the first tooth bar and the second tooth bar are installed respectively, the output shaft of gear motor connects big gear wheel through steel plate, big gear wheel engages with the first tooth bar and the second tooth bar respectively, manned sliding stand and counterweight sliding stand stretch out round about or retract under the driving of gear motor,
Connecting rod mechanism is that two groups of structures are identical, the parallel X-type connecting rod arranged, the two ends of two groups of X-type connecting rods connect top bottom-disc and support respectively, and two groups of X-type connecting rods install hydraulic actuating cylinder respectively, and X-type connecting rod extends or compresses under the driving of hydraulic actuating cylinder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410827078.0A CN104477815A (en) | 2014-12-25 | 2014-12-25 | Platform-retractable hydraulic lift |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410827078.0A CN104477815A (en) | 2014-12-25 | 2014-12-25 | Platform-retractable hydraulic lift |
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| Publication Number | Publication Date |
|---|---|
| CN104477815A true CN104477815A (en) | 2015-04-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410827078.0A Pending CN104477815A (en) | 2014-12-25 | 2014-12-25 | Platform-retractable hydraulic lift |
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Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105129665A (en) * | 2015-09-25 | 2015-12-09 | 苏州市优诺特升降机械有限公司 | Elevator with extensible operating platform |
| CN105739425A (en) * | 2016-03-16 | 2016-07-06 | 国网山东省电力公司章丘市供电公司 | High-altitude operation platform based on PLC control and use method thereof |
| CN105841988A (en) * | 2016-04-05 | 2016-08-10 | 广东精铟海洋工程股份有限公司 | Reciprocal-load elevating test machine, elevating test system and elevating test method |
| CN106153108A (en) * | 2016-07-08 | 2016-11-23 | 蓝龙飞 | A kind of multifunctional high pressure power station detection device |
| CN106429904A (en) * | 2016-11-23 | 2017-02-22 | 俞其荣 | Autobalance crane |
| CN107117564A (en) * | 2016-02-24 | 2017-09-01 | 中国科学院沈阳自动化研究所 | A kind of apparatus for work with turning function |
| CN107116530A (en) * | 2016-02-24 | 2017-09-01 | 中国科学院沈阳自动化研究所 | A kind of robot device with holding function |
| CN107116558A (en) * | 2016-02-24 | 2017-09-01 | 中国科学院沈阳自动化研究所 | A kind of robot device of power transformating and supplying facility detection |
| CN107351400A (en) * | 2017-09-13 | 2017-11-17 | 王保锋 | A kind of conveniently adjusted 3D printer stamp pad |
| CN108190794A (en) * | 2018-03-01 | 2018-06-22 | 南京博蓝奇智能科技有限公司 | Lifting telescopic device and can variant lifting floor truck |
| CN108909534A (en) * | 2018-06-22 | 2018-11-30 | 苏州大成电子科技有限公司 | A kind of urban track traffic car contact net maintenance hydraulic foldable type tool car |
| CN110792251A (en) * | 2019-10-28 | 2020-02-14 | 山东天成钢结构有限公司 | Remove convenient work platform that encorbelments |
| CN110842406A (en) * | 2019-11-18 | 2020-02-28 | 哈尔滨工程大学 | Modularization welding set to large-scale box |
| CN111792589A (en) * | 2019-11-22 | 2020-10-20 | 苏州威尔力液压升降机械有限公司 | Self-propelled aerial work platform |
| CN112125246A (en) * | 2020-09-07 | 2020-12-25 | 国网江苏省电力有限公司滨海县供电分公司 | High-altitude load transferring platform and lifting device |
| CN113541038A (en) * | 2021-06-30 | 2021-10-22 | 国网山东省电力公司栖霞市供电公司 | Vehicle-mounted work platform for live working |
| CN114055025A (en) * | 2021-11-29 | 2022-02-18 | 中冶重工（唐山）有限公司 | Welding platform for main body of smelting reduction furnace and construction method thereof |
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| CN204400536U (en) * | 2014-12-25 | 2015-06-17 | 哈尔滨工程大学 | Platform telescoping hydraulic hoist |
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| US4488326A (en) * | 1982-09-30 | 1984-12-18 | Autoquip Corporation | Pallet dock lift |
| EP1033343A2 (en) * | 1999-03-03 | 2000-09-06 | Treemme Tecnology Srl | Extendable aerial platform |
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Cited By (20)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105129665A (en) * | 2015-09-25 | 2015-12-09 | 苏州市优诺特升降机械有限公司 | Elevator with extensible operating platform |
| CN107116558A (en) * | 2016-02-24 | 2017-09-01 | 中国科学院沈阳自动化研究所 | A kind of robot device of power transformating and supplying facility detection |
| CN107117564A (en) * | 2016-02-24 | 2017-09-01 | 中国科学院沈阳自动化研究所 | A kind of apparatus for work with turning function |
| CN107116530A (en) * | 2016-02-24 | 2017-09-01 | 中国科学院沈阳自动化研究所 | A kind of robot device with holding function |
| CN105739425A (en) * | 2016-03-16 | 2016-07-06 | 国网山东省电力公司章丘市供电公司 | High-altitude operation platform based on PLC control and use method thereof |
| CN105841988A (en) * | 2016-04-05 | 2016-08-10 | 广东精铟海洋工程股份有限公司 | Reciprocal-load elevating test machine, elevating test system and elevating test method |
| CN106153108A (en) * | 2016-07-08 | 2016-11-23 | 蓝龙飞 | A kind of multifunctional high pressure power station detection device |
| CN106429904B (en) * | 2016-11-23 | 2018-07-17 | 俞其荣 | Autobalance loop wheel machine |
| CN106429904A (en) * | 2016-11-23 | 2017-02-22 | 俞其荣 | Autobalance crane |
| CN107351400A (en) * | 2017-09-13 | 2017-11-17 | 王保锋 | A kind of conveniently adjusted 3D printer stamp pad |
| CN108190794A (en) * | 2018-03-01 | 2018-06-22 | 南京博蓝奇智能科技有限公司 | Lifting telescopic device and can variant lifting floor truck |
| CN108909534A (en) * | 2018-06-22 | 2018-11-30 | 苏州大成电子科技有限公司 | A kind of urban track traffic car contact net maintenance hydraulic foldable type tool car |
| CN108909534B (en) * | 2018-06-22 | 2021-11-16 | 苏州大成电子科技有限公司 | Urban rail transit passenger train contact net overhauls hydraulic pressure folded form tool car |
| CN110792251A (en) * | 2019-10-28 | 2020-02-14 | 山东天成钢结构有限公司 | Remove convenient work platform that encorbelments |
| CN110842406A (en) * | 2019-11-18 | 2020-02-28 | 哈尔滨工程大学 | Modularization welding set to large-scale box |
| CN110842406B (en) * | 2019-11-18 | 2021-05-11 | 哈尔滨工程大学 | Modularization welding set to large-scale box |
| CN111792589A (en) * | 2019-11-22 | 2020-10-20 | 苏州威尔力液压升降机械有限公司 | Self-propelled aerial work platform |
| CN112125246A (en) * | 2020-09-07 | 2020-12-25 | 国网江苏省电力有限公司滨海县供电分公司 | High-altitude load transferring platform and lifting device |
| CN113541038A (en) * | 2021-06-30 | 2021-10-22 | 国网山东省电力公司栖霞市供电公司 | Vehicle-mounted work platform for live working |
| CN114055025A (en) * | 2021-11-29 | 2022-02-18 | 中冶重工（唐山）有限公司 | Welding platform for main body of smelting reduction furnace and construction method thereof |
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