CN107487723B - A kind of substation equipment maintenance and repair hoisting apparatus - Google Patents

A kind of substation equipment maintenance and repair hoisting apparatus Download PDF

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Publication number
CN107487723B
CN107487723B CN201710848247.2A CN201710848247A CN107487723B CN 107487723 B CN107487723 B CN 107487723B CN 201710848247 A CN201710848247 A CN 201710848247A CN 107487723 B CN107487723 B CN 107487723B
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China
Prior art keywords
arm
joint
load
fixed
bearing chassis
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CN201710848247.2A
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CN107487723A (en
Inventor
孙启伟
王雷
秦卫东
尚光伟
张亚涛
薛宇
华大鹏
孙更
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State Grid Henan Electric Power Co Ltd
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State Grid Henan Electric Power Co Ltd
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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B66HOISTING; LIFTING; HAULING
    • B66CCRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C23/00Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes
    • B66C23/18Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes specially adapted for use in particular purposes
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B66HOISTING; LIFTING; HAULING
    • B66CCRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C1/00Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles
    • B66C1/10Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles by mechanical means
    • B66C1/22Rigid members, e.g. L-shaped members, with parts engaging the under surface of the loads; Crane hooks
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B66HOISTING; LIFTING; HAULING
    • B66CCRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C23/00Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes
    • B66C23/62Constructional features or details
    • B66C23/64Jibs
    • B66C23/66Outer or upper end constructions
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B66HOISTING; LIFTING; HAULING
    • B66CCRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C23/00Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes
    • B66C23/62Constructional features or details
    • B66C23/64Jibs
    • B66C23/68Jibs foldable or otherwise adjustable in configuration

Abstract

The present invention relates to substation's hoisting apparatus technical field more particularly to a kind of substation equipment maintenance and repair hoisting apparatus, and including load-bearing chassis and the jack machinism being arranged on the load-bearing chassis, jacking device and fixed frame is arranged on the load-bearing chassis;The jacking device includes engine and hydraulic cylinder;The jack machinism includes the lower arm configuration being arranged on the load-bearing chassis and the upper arm structure that connect with the lower arm configuration, the upper arm structure is fluid pressure type or electrodynamic type more piece foldable structure, the upper arm structure includes the first joint arm and the second joint arm interconnected, first joint arm is set as zigzag and folds arm, telescopic arm structure is set as in the middle part of first joint arm, second joint arm is fork configuration boom.The present invention changes the lifting pattern during traditional construction, reduces scope of power outage of the electric power facility in maintenance or installation to the greatest extent, efficiently solves the contradiction of electric power facility construction and maintenance and system safety and reliable power supply.

Description

A kind of substation equipment maintenance and repair hoisting apparatus
Technical field
The present invention relates to substation's hoisting apparatus technical field more particularly to a kind of substation equipment maintenance and repair hoisting apparatus.
Background technique
Lifting appliance is often used crane in power station enlarging or improvement project, and common crane volume is big, makes in charging equipment area It is limited with the swing and lifting of its crane arm by live geographical location and surrounding charging equipment, use is very inconvenient, there is peace Entirely because suffering from, when sometimes having to expand scope of power outage to meet current transformer outside use condition, such as the replacement room 110KV, one As current transformer be located at switch below, crane station on the way crane arm will through switch could lift by crane mutual inductor, crane arm Raising height crossed line by top and influenced, swing angle is limited by switching;When replacing 110KV bus PT for another example, installation Perhaps crane can't reach or sling height is influenced by top charged generatrix for position;There are many similar situation, such as replace or install In the work such as outdoor 110KV first (side) disconnecting link, 35KV outdoor switch, 110KV route PT, all exist because lifting equipment is by scene The case where condition limits and expands scope of power outage, or even lifting equipment cannot be used.
The invention of Patent No. 201611114450.9 is related to building and lifting field, and in particular to a kind of substation's hanger The spare hanger of pedestal and substation.A kind of substation's hanger pedestal comprising pedestal, support base, traveling wheel and adjustment platform.Row Wheel setting is walked in pedestal bottom, pedestal has containing cavities.Support base includes extension and support portion, and support portion is arranged in extension One end.The other end of extension is slidably disposed in containing cavities so that support portion far from or close to pedestal.Support portion is used In support pedestal so that traveling wheel is detached from ground.Platform is adjusted to connect by the top surface of pars contractilis and pedestal.Such substation Hanger pedestal is stable, reliable, easy to use.A kind of spare hanger of substation, including column, suspension arm, hoisting mechanism and above-mentioned Substation's hanger pedestal, one end of column connect with suspension arm, and the other end of column connect with the top of adjustment platform, lifting One end on suspension arm far from column is arranged in mechanism.Column and suspension arm are telescopic structure.
The invention of Patent No. 201510751583.6 is related to a kind of weight boom hoisting, in the front lower portion two of platen (15) Side is respectively equipped with wheel (16), and the rear lower of the platen (15) is equipped with another wheel (16), and platen (15) rear portion is equipped with Traction handle (11), the upper back two sides of platen (15) are respectively equipped with upright bar (9), and the lower part of both heights adjusting rod (5) is worn respectively In two upright bars (9) and fixed by wearing pin (6), the both ends of cross bar (1) are connected to the upper end of both heights adjusting rod (5), In The support rod (2) of cross bar (1) front is equipped with hoist crane (4);The invention by hoist crane by various equipment be hung in platen On, various equipment are transported to by suitable position by platen, various equipment are then lifted to installation site using hoist crane, It effectively accelerates job scheduling and alleviates operation intensity.
However, although above-mentioned small-sized hoisting device can be reached directly near equipment, and using the hoisting method praised, Lifting height is influenced smaller, using flexible, conveniently, safely by top charging equipment, and still, one is expensive, secondly adopting It is also lifting method, uses sling height critical constraints in live zone.Other products are also using lifting method, Er Qieti Product is larger, is unsatisfactory for substation field use, can satisfy small-sized of the power transformation engineering scene refitting of our requirements so far Setting in market at home and abroad is still blank out.
Summary of the invention
The present invention provides a kind of substation equipment maintenance and repair hoisting apparatus, using the combined type jack machinism of convenient and efficient, volume It is small, it is applied widely, it is able to satisfy the various live use demands of substation.
To achieve the above object, it the technical solution used in the present invention is: a kind of substation equipment maintenance and repair hoisting apparatus, including holds Jacking device and fixed frame is arranged on the load-bearing chassis in weight chassis and the jack machinism that is arranged on the load-bearing chassis;Institute Stating jacking device includes engine and hydraulic cylinder;The jack machinism include the lower arm configuration being arranged on the load-bearing chassis and The upper arm structure being connect with the lower arm configuration, the upper arm structure be fluid pressure type or electrodynamic type more piece foldable structure, it is described on Arm configuration includes the first joint arm and the second joint arm interconnected, and first joint arm is set as zigzag and folds arm, and described first Telescopic arm structure is set as in the middle part of joint arm, the telescopic arm structure is connect with the lower arm configuration;Second joint arm is fork The front end of first joint arm is arranged in shape structure boom, second joint arm.
Further, an opening and the closed annulus of energy, the circle ring inner wall edge is arranged in the front end of the upper arm structure Batten or rubber pad are served as a contrast, the rotatable structure of formation of the annulus and the front end of the upper arm structure guarantees annulus in upper arm Each angle of structure motion remains that a certain number of suspension hooks are arranged in horizontal position, the annulus periphery.
Further, wirerope zipper structure, setting inside second joint arm are set inside the upper arm structure front end There is oil cylinder, zipper structure can be driven by cylinder action, carry out fine tuning up and down.
Further, the head of second joint arm is provided with hood type hanging ring, for fixing when lifting and playing suspension hook Effect, hood type hanging ring upper end connect round sliding slot, and in lifting, rotating weight is easily installed.
Further, the fixed frame includes that multiple groups embed folding type hydraulic bracket, is arranged on load-bearing chassis chassis Under it is each connection idler wheel crossbeam in.
Further, the fixed frame includes rotary joint, bracket oil cylinder, swinging mounting, telescope support, the swing branch Compression cylinder is equipped between frame and the telescope support, the rotary joint, which horizontally rotates, to be mounted on load-bearing chassis, the pendulum Dynamic support vertical is rotatably installed on the rotary joint, and rotary fixing base, the bracket oil are fixed on the swinging mounting The both ends of cylinder are hinged with the rotary joint and the rotary fixing base respectively.
Further, the telescope support includes fixed section and telescopic segment, and the fixed section and the swinging mounting are hinged It is fixedly connected afterwards by fixed pin with the rotary fixing base, the fixed section and the telescopic segment use quarter bend structure, described Telescopic segment is inserted into the fixed section and is fixed by pin, and the end of the telescopic segment is also rotatably equipped with adjusting foot bottom Seat.
Further, the telescope support bracket uses frog bracket and radial type bracket combination, constitutes spider-type branch Frame.
The beneficial effects of the present invention are embodied in the following aspects:
1, the present invention uses technology leading in the world in lifting lifting mode, has drawn traditional collapsible crane arm and has stretched The advantages of contracting formula crane arm, will not only fold arm and be designed as that zigzag is hydraulic or electric up-down folding structure, may be mounted to small-sized The advantages that on the maintenance chassis of change, with from heavy and light, operating radius is small, occupies little space, large carrying capacity, has innovated biography The lifting method of system gets rid of the influence of charged generatrix above lifting object, improves the working efficiency of construction, can effectively realize Power station interior construction, and telescopic arm is merged on the basis of folding arm, there is preferable bending resistance and torsional rigidity, increase work Industry radius.
2, the present invention has installed fork configuration boom additional in the front end novelty of hoisting apparatus, has greatly reinforced crane capacity, The equipment to be lifted by crane can be placed on inside forks arm simultaneously, reduce boundary of works area.
3, the upper arm structure Front-end Design of hoisting apparatus of the present invention have an opening and can with closed hanging ring, annulus with it is upper The fixed design of arm configuration front end guarantees that annulus remains horizontal in each angle that crane arm moves at rotatable structure Appropriate number of suspension hook is set as needed in position, annulus periphery, to use when easy to disassemble or installation equipment.
4, the present invention uses novel anchor ear crane system, and the telescopic arm head of hoisting apparatus is equipped with the hanging ring of anchor ear form, Anchor ear not only acts as fixed (not clamping) effect when lifting, can also play the role of suspension hook;Hood type hanging ring lower end is connected with circle Sliding slot, the effect of round sliding slot are can be easily installed with rotating weight.When lifting, hood type hanging ring and concentric stroking slot position are in electric current Mutual inductor center of gravity ensure that the stability during lifting with upper bit.
7, the present invention changes lifting pattern during traditional construction, reduce to the greatest extent electric power facility in maintenance or Scope of power outage in installation, the safe operation of safeguards system guarantee the reliable power supply of user, pass through answering for the novel device With, can be improved power station construction working efficiency and working security, for later power station construct or laid in emergency management and rescue field Firm basis efficiently solves the contradiction of electric power facility construction and maintenance and system safety and reliable power supply.
Detailed description of the invention
Fig. 1 is overall structure diagram of the invention.
Fig. 2 is telescopic support structure schematic diagram of the invention.
Fig. 3 is hood type hanging ring structural schematic diagram of the invention.
Specific embodiment
Embodiment
As shown in Figure 1 to Figure 3, a kind of substation equipment maintenance and repair hoisting apparatus, including load-bearing chassis 1 and setting are on load-bearing chassis Jacking device 3 and fixed frame 4 are arranged on load-bearing chassis 1 for jack machinism 2 on 1;Jacking device includes engine and hydraulic cylinder;Lifting Mechanism 2 includes the upper arm structure 6 that the One On The Chassis lower arm configuration 5 of load-bearing is arranged in and connect with lower arm configuration 5, upper arm structure 6 For fluid pressure type or electrodynamic type more piece foldable structure, upper arm structure 6 includes the first joint arm 7 interconnected and the second joint arm 8, and first Joint arm is set as zigzag and folds arm, and the middle part of the first joint arm 7 is set as telescopic arm structure, and telescopic arm structure and lower arm configuration 5 connect It connects;Second joint arm 8 is fork configuration boom, and the front end of the first joint arm 7 is arranged in the second joint arm 8.
Upper arm structure of the invention has fully considered the advantage and disadvantage for folding arm and telescopic arm, and is innovated, the two operation The principle of operation is different: the top of telescopic arm can connect operation basket by fly jib, and swing mechanism makes 360 ° of full circle swingings of working arm, makees For main bearing member, its weight typically constitutes from 20%~25% or so of main screw lift, so its key is the shape of telescoping mechanism Formula and telescopic boom section form, and arm relative telescopic arm is folded from heavy and light, operating radius is small, and production is simple, stores small in size etc. all More advantages apply relative maturity on lorry-mounted crane, but lorry-mounted crane is bulky, cannot be introduced into inside power station into Row construction, therefore by fold arm be installed on the chassis of miniaturization be the invention innovative point, also for later power station construction provide A set of new arrangement and method for construction.
The present invention passes through comprehensive analysis, which cannot fully meet important according to telescopic arm It asks, telescopic arm operating radius is big, and brachium and hoist are inversely.And folding arm is used just to can be well solved minor radius lifting Problem, folding arm configuration occupied area is small, and elevating capacity is strong.In order to increase height, which folds arm rear end and sets It is equipped with a section telescopic arm, meanwhile, the present invention folds arm front end and is provided with fork configuration boom, for comparing straight-arm, operating radius It is corresponding to reduce, but crane capacity increases, while the equipment to be lifted by crane can be placed on inside forks arm, reduces boundary of works area, Therefore the invention, which is selected, folds arm (increasing Telescopic)+fork-shaped arm configuration.
When actual fabrication, folding arm can be used rectangular section, and manufacturing process is simple, has preferable bending resistance and antitorque Rigidity is suitable for cantilever crane development of the invention, and telescopic arm can be used by the Bi -- directional Compression -- Flexure elliptical section component based on curved, upper curved Plate is orthodrome trough plate, and lower bent plate is oval trough plate, and is shunk from bottom to top, and Weight-optimised, torsional property is significant, With intrinsic unique stability and distortion resistance, the technology of oval crane arm represents higher level, due to being not required to use Reinforcement, thus every joint arm section varies less, and is conducive to the weight for mitigating the gib arm of crane, improves the elevating capacity of crane.
Hoisting apparatus uses " Z " font hydraulic or the folding structure of electric up-down.This most significant advantage of structure is It occupies little space, large carrying capacity.The lower arm configuration of " Z " font hoisting apparatus can be horizontally fixed in the upper plane on chassis. Upper arm structure Front-end Design one of hoisting apparatus opening and can be with lining batten or rubber with closed annulus 9, circle ring inner wall Rubber mat.The fixed design of annulus and upper arm structure front end guarantees annulus at each angle that crane arm moves at rotatable structure Degree remains that appropriate number of suspension hook is set as needed in horizontal position, annulus periphery, when with easy to disassemble or installation equipment It uses.Such as: when dismounting PT/CT, which can be fixed on to the outside of insulator, the batten or rubber of circle ring inner wall lining Pad can guarantee that insulator can effectively avoid the collision with metal ring in operation process, by adjusting the length of lifting rope, the circle Ring can also play the role of preventing device inclined from overturning.
Wirerope zipper structure 10 is set inside upper arm structure front end, and the second joint arm is internally provided with oil cylinder, can pass through oil Cylinder movement drives zipper structure, carries out fine tuning up and down.Upper arm structure front end is equipped with hood type hanging ring 11, hood type hanging ring when lifting Fixed (not clamping) effect (by two sides hand actuable clamping device) is not only acted as, suspension hook can also be played the role of;Hood type hanging ring 11 Upper end is connected with round sliding slot 12, and the effect of round sliding slot 12 is can be easily installed with rotating weight.When lifting, hood type hanging ring 11 are located at current transformer center of gravity with round sliding slot 12 with upper bit, ensure that the stability during lifting.
Fixed frame includes that multiple groups embed folding type hydraulic bracket, and the crossbeam of each connection idler wheel under load-bearing chassis is arranged in It is interior.In view of balance and stability whole after boom hoisting carrying in operation process, we can be every under load-bearing chassis The a set of embedded folding type hydraulic bracket of design in the crossbeam of a connection idler wheel, what the end installation one of bracket can be vertically moved up or down Screw-type support disk.When normal work, folding type hydraulic holder pivots 180 degree is embedded, is removed out of crossbeam, extends to idler wheel Outside, the support disk bottom surface of bracket end and ground face contact, by adjusting spiral vertical lift bar, by crawler belt or Four rolling supports.It is not only able to effectively increase the load-bearing area on chassis in this way, and can be adjusted by the adjusting rod The level on chassis, while the self weight also increased.After work, support disk is first packed up, then bracket is rotated into 180 degree, by It is recovered to inside crossbeam on the outside of idler wheel.
Fixed frame includes rotary joint, bracket oil cylinder, swinging mounting, telescope support, between swinging mounting and telescope support Equipped with compression cylinder, rotary joint, which horizontally rotates, to be mounted on load-bearing chassis, and swinging mounting is vertically rotatably installed in rotary joint On, rotary fixing base is fixed on swinging mounting, the both ends of bracket oil cylinder are hinged with rotary joint and rotary fixing base respectively.
Telescope support includes fixed section 13 and telescopic segment 14, and fixed section 13 and swinging mounting hingedly pass through 15 He of fixed pin afterwards Rotary fixing base 16 is fixedly connected, and fixed section 13 and telescopic segment 14 use quarter bend structure, and telescopic segment 14 is inserted into fixed section 13 simultaneously Fixed by pin 17, the end of telescopic segment, which is also rotatably equipped with, adjusts stabilizer blade pedestal 18.
Telescope support uses frog bracket and radial type bracket combination, constitutes spider-type bracket, different to adapt to change The requirement in place and different work performance.
In support Design, bracket fixed section is provided with rotation fixation hole, be provided on rotary fixing base the first fixation hole and Second fixation hole, when telescope support expansion, fixed pin is inserted into rotation fixation hole and the first fixation hole simultaneously with fixed telescopic section And fixed section so that telescope support keep unfolded state, when telescope support is packed up, fixed pin be inserted into simultaneously rotation fixation hole with Second fixation hole is with fixed telescopic section and fixed section, so that telescope support keeps collapsed state.It is provided on fixed section Telescopic Fixed Hole, multiple adjustment holes are provided in telescopic segment, and fixed section is stretched by the adjustment hole that pin passes through different location in telescopic segment with adjusting The length of contracting bracket.The fixed frame uniform force, while developed area is small, it is easy to operate, meet the development demand of the invention.
It manufactures and is practiced using display through applying unit, tool car transport can be used in hoisting apparatus of the present invention;It can arrive Up near outdoor 110KV equipment;Praise weight 1000kg, 5 meters of raising height, can lift such as 220kv 110kv mutual inductor, The equipment such as arrester, disconnecting link, single-phase switch;With a degree of automatic walking function, lifting part uses double-arm hydraulic foldable Mode is praised, most of substation's interior constructions is can satisfy, can be promoted in the whole nation, will be generated after coming into operation very big Economic benefit, therefore with good economic efficiency and social benefit.
Finally, it is stated that the above examples are only used to illustrate the technical scheme of the present invention and are not limiting, this field is common Other modifications or equivalent replacement that technical staff makes technical solution of the present invention, without departing from technical solution of the present invention Spirit and scope, be intended to be within the scope of the claims of the invention.

Claims (5)

1. a kind of substation equipment maintenance and repair hoisting apparatus, including load-bearing chassis and the jack machinism being arranged on the load-bearing chassis, Jacking device and fixed frame are set on the load-bearing chassis;The jacking device includes engine and hydraulic cylinder;The jack machinism packet The upper arm structure for including the lower arm configuration being arranged on the load-bearing chassis and being connect with the lower arm configuration, the upper arm structure For fluid pressure type or electrodynamic type more piece foldable structure, the upper arm structure includes the first joint arm and the second joint arm interconnected, institute It states the first joint arm and is set as zigzag folding arm, be set as telescopic arm structure, the telescopic arm structure in the middle part of first joint arm It is connect with the lower arm configuration;Second joint arm is fork configuration boom, and second joint arm is arranged in first joint arm Front end, it is characterised in that: the front end of the upper arm structure be arranged an opening and can closed annulus, the circle ring inner wall edge Batten or rubber pad are served as a contrast, the rotatable structure of formation of the annulus and the front end of the upper arm structure guarantees annulus in upper arm Each angle of structure motion remains that a certain number of suspension hooks are arranged in horizontal position, the annulus periphery;The upper arm knot Wirerope zipper structure is set inside structure front end, and second joint arm is internally provided with oil cylinder, can be driven and be drawn by cylinder action Lock construction carries out fine tuning up and down;The head of second joint arm is provided with hood type hanging ring, hangs for fixing and playing when lifting Hook effect, hood type hanging ring upper end connect round sliding slot, and in lifting, rotating weight is easily installed.
2. a kind of substation equipment maintenance and repair hoisting apparatus as described in claim 1, it is characterised in that: the fixed frame includes in multiple groups Embedding folding type hydraulic bracket is arranged under the load-bearing chassis in the crossbeam of each connection idler wheel.
3. a kind of substation equipment maintenance and repair hoisting apparatus as claimed in claim 2, it is characterised in that: the fixed frame includes that rotation is closed Section, bracket oil cylinder, swinging mounting, telescope support are equipped with compression cylinder between the swinging mounting and the telescope support, described Rotary joint, which horizontally rotates, to be mounted on load-bearing chassis, and the swinging mounting is vertically rotatably installed on the rotary joint, institute It states and is fixed with rotary fixing base on swinging mounting, the both ends of the bracket oil cylinder are solid with the rotary joint and the rotation respectively Reservation is hinged.
4. a kind of substation equipment maintenance and repair hoisting apparatus as claimed in claim 3, it is characterised in that: the telescope support includes fixing Section and telescopic segment, the fixed section are hingedly fixedly connected by fixed pin with the rotary fixing base afterwards with the swinging mounting, The fixed section and the telescopic segment use quarter bend structure, and the telescopic segment is inserted into the fixed section and is fixed by pin, The end of the telescopic segment, which is also rotatably equipped with, adjusts stabilizer blade pedestal.
5. a kind of substation equipment maintenance and repair hoisting apparatus as claimed in claim 4, it is characterised in that: the telescope support uses breast-stroke Bracket and radial type bracket combination constitute spider-type bracket.
CN201710848247.2A 2017-09-19 2017-09-19 A kind of substation equipment maintenance and repair hoisting apparatus Active CN107487723B (en)

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CN107487723B true CN107487723B (en) 2019-11-08

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3609512A1 (en) * 1985-04-25 1986-11-06 Hiab Foco Ab Crane
CN2600418Y (en) * 2003-01-13 2004-01-21 安徽省三色照明股份有限公司 Shipborne crane
CN201077722Y (en) * 2007-06-21 2008-06-25 招远金王机电科技有限公司 Semiautomatic multifunctional loader-unloader
CN102530736A (en) * 2012-01-31 2012-07-04 河南省电力公司南阳供电公司 On-site crane car for power transformation engineering
CN202625661U (en) * 2012-05-30 2012-12-26 杭州贝特设备制造有限公司 Spider-type hoisting machine with additional arm

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3609512A1 (en) * 1985-04-25 1986-11-06 Hiab Foco Ab Crane
CN2600418Y (en) * 2003-01-13 2004-01-21 安徽省三色照明股份有限公司 Shipborne crane
CN201077722Y (en) * 2007-06-21 2008-06-25 招远金王机电科技有限公司 Semiautomatic multifunctional loader-unloader
CN102530736A (en) * 2012-01-31 2012-07-04 河南省电力公司南阳供电公司 On-site crane car for power transformation engineering
CN202625661U (en) * 2012-05-30 2012-12-26 杭州贝特设备制造有限公司 Spider-type hoisting machine with additional arm

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