CN106966305A - A kind of steel structure bridge installation hanging apparatus - Google Patents

A kind of steel structure bridge installation hanging apparatus Download PDF

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Publication number
CN106966305A
CN106966305A CN201710362848.2A CN201710362848A CN106966305A CN 106966305 A CN106966305 A CN 106966305A CN 201710362848 A CN201710362848 A CN 201710362848A CN 106966305 A CN106966305 A CN 106966305A
Authority
CN
China
Prior art keywords
column
beam body
hanging apparatus
pulley
bevel gear
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
Application number
CN201710362848.2A
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Chinese (zh)
Inventor
胥悦微
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Individual
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Individual
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Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to CN201710362848.2A priority Critical patent/CN106966305A/en
Publication of CN106966305A publication Critical patent/CN106966305A/en
Pending legal-status Critical Current

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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
    • B66C23/16Cranes 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 with jibs supported by columns, e.g. towers having their lower end mounted for slewing movements
    • 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
    • B66C23/70Jibs constructed of sections adapted to be assembled to form jibs or various lengths
    • B66C23/701Jibs constructed of sections adapted to be assembled to form jibs or various lengths telescopic
    • EFIXED CONSTRUCTIONS
    • E01CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01DCONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
    • E01D21/00Methods or apparatus specially adapted for erecting or assembling bridges

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Conveying And Assembling Of Building Elements In Situ (AREA)

Abstract

The invention provides a kind of steel structure bridge installation hanging apparatus, belong to bridge construction field, including column, cantilever beam, hoist engine and steel cable, the outrigger horizontal is on the column, the bottom of the column is provided with first pulley, the top of the column is provided with second pulley, and the end of the cantilever beam is provided with the 3rd pulley;One end of the steel cable connects the hoist engine, and the steel cable sequentially passes through the first pulley, second pulley and the 3rd pulley;The cantilever beam includes the first beam body and the second beam body, and first beam body is connected to the column, and second beam body is connected to first beam body;Second beam body is slidably connected with first beam body causes the adjustable length of the cantilever beam.This hanging apparatus can be lifted relaxedly and rapidly to goods, and it can be conveniently adjusted so that it has wider array of application.

Description

A kind of steel structure bridge installation hanging apparatus
Technical field
The present invention relates to bridge construction field, in particular to a kind of steel structure bridge installation hanging apparatus.
Background technology
There are a variety of building materials and instrument to need transport in bridge construction, the mode of traditional artificial conveyance is obviously unfavorable for bridge Beam is efficiently built.
In the prior art, there are some hanging apparatus, for lifting building materials or equipment, the knot of hanging apparatus in the prior art Structure design comparison is simple, it is impossible to adjusted so that lifting scope is smaller, it has not been convenient to the movement of goods.
The content of the invention
The invention provides a kind of steel structure bridge installation hanging apparatus, it is intended to solves of the prior art above-mentioned ask Topic.
What the present invention was realized in:
A kind of steel structure bridge installation hanging apparatus, including column, cantilever beam, hoist engine and steel cable, the outrigger horizontal On the column, the bottom of the column is provided with first pulley, and the top of the column is provided with second pulley, the cantilever The end of beam is provided with the 3rd pulley;One end of the steel cable connects the hoist engine, and the steel cable sequentially passes through described first and slided Wheel, second pulley and the 3rd pulley;The cantilever beam includes the first beam body and the second beam body, and first beam body is connected to described Column, second beam body is connected to first beam body;Second beam body is slidably connected so that institute with first beam body State the adjustable length of cantilever beam.
Alternatively, rack is provided with the side wall of second beam body along its length, first beam body is provided with The first gear engaged with the rack, the axis of the first gear is vertical, and the first gear is engaged with the rack, The first gear is also associated with the first sprocket wheel being coaxial therewith, and first sprocket wheel is connected with the chain engaged;It is described Chain passes through the column.
Alternatively, the column is provided with the second sprocket wheel, and the axis of second sprocket wheel is vertical, and the chain is closure Structure, the chain and second sprocket engagement.
Alternatively, the column is hollow structure, and the column includes the riser for connecting the cantilever beam, and the chain is worn Cross the riser;Second sprocket wheel is inside the column;Second steering sprocket key is connected with power transmission shaft, the power transmission shaft On be also associated with first bevel gear;The first bevel gear engagement is connected with second bevel gear, the axis of the second bevel gear For level;The second bevel gear is connected with drive shaft, and the drive shaft is rotated with the column and is connected, the end of the drive shaft Portion is extended to outside the column, and the end of drive shaft is connected with handwheel.
Alternatively, there is horizontally disposed connecting plate, the connecting plate is located at second sprocket wheel inside the column Top, the first bevel gear is located at the lower section of second sprocket wheel;The power transmission shaft is rotated with the connecting plate and is connected;It is described The side relative with the riser offers end cap on column.
Alternatively, the inner side of the column is provided with limiting plate, and the limiting plate is horizontally disposed;The limiting plate is leaned on The side of the nearly second bevel gear, which is provided with chute, the chute, slidably connects sliding block, and the sliding block is provided with spacing Tooth, the limiting tooth is engaged with the second bevel gear;Spring is additionally provided with the chute, the spring is supported with the sliding block Touch;The sliding block is connected with push rod, and the spring and push rod are located at the both sides of the push rod respectively;The end of the push rod is stretched out The column.
Alternatively, the section of the chute is large semi-circular.
Alternatively, the end of the push rod is located between the handwheel and the column.
The steel structure bridge installation hanging apparatus that the present invention is provided, relaxedly and rapidly can be lifted to goods, and And it can be conveniently adjusted so that it has wider array of application.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing There is the accompanying drawing used required in technology description to be briefly described, it should be apparent that, drawings in the following description are only this Some embodiments of invention, for those of ordinary skill in the art, on the premise of not paying creative work, can be with Other accompanying drawings are obtained according to these accompanying drawings.
Fig. 1 is the structural representation of steel structure bridge installation hanging apparatus provided in an embodiment of the present invention;
Fig. 2 is that the structure that cantilever beam is connected with column in steel structure bridge installation hanging apparatus provided in an embodiment of the present invention is shown It is intended to;
Fig. 3 is that first gear is connected with rack and chain in steel structure bridge installation hanging apparatus provided in an embodiment of the present invention Structural representation;
Fig. 4 is the structural representation inside steel structure bridge installation hanging apparatus central post provided in an embodiment of the present invention;
Fig. 5 is the structural representation outside steel structure bridge installation hanging apparatus central post provided in an embodiment of the present invention;
Fig. 6 is that limiting plate and the structure of sliding block connection are shown in steel structure bridge installation hanging apparatus provided in an embodiment of the present invention It is intended to;
Fig. 7 is that limiting plate is connected with sliding block and spring in steel structure bridge installation hanging apparatus provided in an embodiment of the present invention Structural representation.
Reference collects:Column 11, cantilever beam 12, hoist engine 13, steel cable 14, first pulley 15, second pulley the 16, the 3rd are slided Take turns the 17, first beam body 18, the second beam body 19, rack 20, first gear 21, chain 22, the second sprocket wheel 23, riser 24, power transmission shaft 25th, first bevel gear 26, second bevel gear 27, drive shaft 28, handwheel 29, connecting plate 30, end cap 31, limiting plate 32, chute 33, Sliding block 34, limiting tooth 35, push rod 36, spring 37, the first sprocket wheel 38.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete Site preparation is described, it is clear that described embodiment is only a part of embodiment of the invention, rather than whole embodiments.It is based on Embodiment in the present invention, it is every other that those of ordinary skill in the art are obtained under the premise of creative work is not made Embodiment, belongs to the scope of protection of the invention.
Embodiment, refers to Fig. 1-Fig. 7.
A kind of steel structure bridge installation hanging apparatus is present embodiments provided, this hanging apparatus can be relaxedly and rapidly Goods is lifted, and it can be conveniently adjusted so that and it has wider array of application.
Steel structure bridge installation hanging apparatus, including column 11, cantilever beam 12, hoist engine 13 and steel cable 14, cantilever beam 12 levels are on column 11, and the bottom of column 11 is provided with first pulley 15, and the top of column 11 is provided with second pulley 16, cantilever The end of beam 12 is provided with the 3rd pulley 17;One end connection hoist engine 13 of steel cable 14, steel cable 14 sequentially passes through first pulley 15, the Two pulleys 16 and the 3rd pulley 17;Cantilever beam 12 includes the first beam body 18 and the second beam body 19, and the first beam body 18 is connected to column 11, the second beam body 19 is connected to the first beam body 18;Second beam body 19 and the first beam body 18, which are slidably connected, causes the length of cantilever beam 12 Degree is adjustable.
As shown in figure 1, column 11 is the base structure of hanging apparatus, for hanging apparatus is arranged on bridge floor, make It can keep stable.Cantilever beam 12 is horizontally disposed girder construction, on column 11.Hoist engine 13 sets for power It is standby, for driving steel cable 14 to move.Steel cable 14 bypasses three pulleys successively, hoist engine 13 is operationally driven steel cable 14 End lifting, the lifting of goods is completed with this.
In the present embodiment, cantilever beam 12 includes two the first beam bodies 18 and the second beam body 19 being slidably connected, and is using When can adjust the position of the second beam body 19 so that the entire length of cantilever beam 12 can be elongated or shorten so that steel cable 14 Location can be regulated so that steel cable 14 can lift the goods of diverse location in the horizontal direction for free end so that Its lifting scope is wider, and use is more convenient.
Rack 20 is provided with the side wall of second beam body 19 along its length, the first beam body 18 is provided with and nibbled with rack 20 The first gear 21 of conjunction, the axis of first gear 21 is vertical, and first gear 21 is engaged with rack 20, and first gear 21 is also connected with There is the first sprocket wheel 38 being coaxial therewith, the first sprocket wheel 38 is connected with the chain 22 engaged;Chain 22 passes through column 11.
As shown in Fig. 2 being provided with rack 20 in the second beam body 19, first gear 21 is provided with the first beam body 18, the The axis direction of one gear 21 is vertical, makes the horizontal positioned of first gear 21.Length direction of the rack 20 along the second beam body 19 is set Put so that it can be meshed with first gear 21.First gear 21 is in rotation process, because the relation of engagement can drive Rack 20 is moved, and then drives the second beam body 19 to be synchronized with the movement with rack 20, thus changes the length of cantilever beam 12.
As shown in figure 3, first gear 21 is connected with the first sprocket wheel 38 being coaxial therewith, sprocket wheel is important in chain-drive mechanism Part, the sprocket wheel 38 of first gear 21 and first can keep synchronous axial system.First sprocket wheel 38 is connected with chain 22, and chain 22 is worn Column 11 is crossed, staff pulls chain 22 in the outside of column 11, the first sprocket wheel 38 can be driven to rotate, and then drives first Gear 21 is rotated, and is moved with the beam body 19 of carry-over bar 20 and second, and then completes the adjustment work of the length of cantilever beam 12.
Column 11 is provided with the second sprocket wheel 23, and the axis of the second sprocket wheel 23 is vertical, and chain 22 is closing structure, chain 22 Engaged with the second sprocket wheel 23.As shown in Fig. 2 the second sprocket wheel 23 is arranged on column 11, chain 22 is the structure of closure, Neng Gouchi It is continuous to be rotated around the first sprocket wheel 38 and the second sprocket wheel 23.The setting of second sprocket wheel 23 so that staff is needing to adjust cantilever During 12 length of beam, it is only necessary to rotate the second sprocket wheel 23 and can be achieved.
Column 11 is hollow structure, and column 11 includes the riser 24 of connecting cantilever beam 12, and chain 22 passes through riser 24;Second Sprocket wheel 23 is inside column 11;The key of second sprocket wheel 23 is connected with power transmission shaft 25, power transmission shaft 25 and is also associated with first bevel gear 26;The engagement of first bevel gear 26 is connected with second bevel gear 27, and the axis of second bevel gear 27 is level;Second bevel gear 27 connects Drive shaft 28 is connected to, drive shaft 28 is rotated with column 11 and is connected, and the end of drive shaft 28 is extended to outside column 11, and drive shaft 28 end is connected with handwheel 29.
As shown in Figures 2 and 4, column 11 is hollow structure, and it is made of square tube, can accommodate multiple work departments inside it Part.Riser 24 is one block of plate of column 11, and cantilever beam 12 is connected on riser 24, and specifically the first beam body 18 is connected to On riser 24.Chain 22 is through riser 24 and stretches into inside column 11.First bevel gear 26 is coaxially disposed with the second sprocket wheel 23, and two Person is connected by power transmission shaft 25, enables to the second sprocket wheel 23 and first bevel gear 26 to keep by the gearing of power transmission shaft 25 Synchronous operation.
First bevel gear 26 is also associated with second bevel gear 27, and second bevel gear 27 is horizontally disposed, and second bevel gear 27 are connected with drive shaft 28, and handwheel 29 is connected to the end of drive shaft 28, and the second cone tooth can be driven by rotating drive shaft 28 Wheel 27 is rotated.
As shown in Figures 4 and 5, bevel gear, which has, can change the specific of rotation direction, the second bevel gear in mechanism 27 axis direction is level so that second bevel gear 27 can be in vertical rotation in surface.Operationally, operator station stands in The outside of column 11, in vertical rotation in surface handwheel 29, drives drive shaft 28 to rotate, drives second bevel gear 27 to rotate, drive First bevel gear 26 is rotated, and first bevel gear 26 drives the second sprocket wheel 23 to rotate by power transmission shaft 25, and the second sprocket wheel 23 passes through chain Bar 22 drives the first sprocket wheel 38 to rotate, and then drives first gear 21 to rotate, and is moved with the beam body 19 of carry-over bar 20 and second.By This, is moved, realizes stretching for cantilever beam 12 in the horizontal direction by that in vertical rotation in surface handwheel 29, can complete the second beam body 19 Contracting so that the telescopic adjustment of cantilever beam 12 is very convenient, and operating position is safer residing for staff, can reduce safety Accident.
The inside of column 11 has horizontally disposed connecting plate 30, and connecting plate 30 is located at the top of the second sprocket wheel 23, the first cone Gear 26 is located at the lower section of the second sprocket wheel 23;Power transmission shaft 25 is rotated with connecting plate 30 and is connected;It is relative with riser 24 on column 11 Side offers end cap 31.
As shown in figure 4, connecting plate 30 is the horizontally disposed plate structure in the inside of column 11, for connecting power transmission shaft 25 so that power transmission shaft 25 can be stably connected to inside column 11.The above-mentioned design sequence of each part, enables each part suitable Task is completed sharply.By setting end cap 31 in the sidepiece of column 11 so that end cap 31 can be inside column 11 after opening Structural member the work such as installed, safeguarded, being debugged.
The inner side of column 11 is provided with limiting plate 32, and limiting plate 32 is horizontally disposed;Limiting plate 32 is close to the second cone tooth The side of wheel 27, which is provided with chute 33, chute 33, slidably connects sliding block 34, and sliding block 34 is provided with limiting tooth 35, limiting tooth 35 Engaged with second bevel gear 27;Spring 37 is additionally provided with chute 33, spring 37 is contradicted with sliding block 34;Sliding block 34 is connected with push rod 36, spring 37 and push rod 36 are respectively positioned at the both sides of push rod 36;Column 11 is stretched out in the end of push rod 36.
As shown in figure 4, limiting plate 32, sliding block 34 constitute position-limit mechanism, for limiting the rotation of second bevel gear 27, make Second bevel gear 27 can be locked when need not adjust 12 length of cantilever beam by obtaining, so that can not by all parts locking Motion.
Limiting plate 32 is arranged on the inner side of column 11, and positioned at the lower section of second bevel gear 27, limiting plate 32 is in the horizontal direction Set.Offered in the horizontal direction on limiting plate 32 and limiting tooth 35 is provided with the sliding block 34 connected on chute 33, chute 33, limited Position tooth 35 can be engaged with second bevel gear 27.Because sliding block 34 can only be moved on the direction of chute 33, second bevel gear 27 It can be rotated about axis, therefore second bevel gear 27 can not be rotated after the two is engaged.Restriction is played a part of with this.
As shown in FIG. 6 and 7, spring 37 is provided with chute 33, spring 37 plays elastic acting force to sliding block 34, by cunning Block 34 contradicts one end in the inner side of column 11 so that limiting tooth 35 keeps engaging with second bevel gear 27, is connected with sliding block 34 Push rod 36, when staff promote push rod 36 when can overcome the elastic force of spring 37, compress spring 37, make limiting tooth 35 with Second bevel gear 27 is separated so that second bevel gear 27 can be rotated, and unblock is played a part of with this.
Pass through the setting of this mechanism so that operationally each gear, each sprocket wheel can keep not rotating hanging apparatus, make Obtaining cantilever beam 12 can be operated with the length of determination;When needing to adjust the length of cantilever beam 12, push rod 36 is promoted to make limit Position tooth 35 is separated with second bevel gear 27, and then each part is conditioned.
The section of chute 33 is large semi-circular.As shown in fig. 6, this design make it that sliding block 34 will not be from top and chute 33 Depart from, and facilitate the setting of spring 37.
The end of push rod 36 is located between handwheel 29 and column 11.This set enables staff to be pushed away in operation Firmly push rod 36 and handwheel 29 is rotated, make the adjustment work of cantilever beam 12 more stable and more convenient.
The foregoing description of the disclosed embodiments, enables professional and technical personnel in the field to realize or using the present invention. A variety of modifications to these embodiments will be apparent for those skilled in the art, as defined herein General Principle can be realized in other embodiments without departing from the spirit or scope of the present invention.Therefore, it is of the invention The embodiments shown herein is not intended to be limited to, and is to fit to and principles disclosed herein and features of novelty phase one The most wide scope caused.

Claims (8)

1. a kind of steel structure bridge installation hanging apparatus, it is characterised in that including column, cantilever beam, hoist engine and steel cable, institute Outrigger horizontal is stated on the column, the bottom of the column is provided with first pulley, and the top of the column is provided with second Pulley, the end of the cantilever beam is provided with the 3rd pulley;One end of the steel cable connects the hoist engine, and the steel cable is worn successively Cross the first pulley, second pulley and the 3rd pulley;The cantilever beam includes the first beam body and the second beam body, first beam Body is connected to the column, and second beam body is connected to first beam body;Second beam body is slided with first beam body Dynamic connection causes the adjustable length of the cantilever beam.
2. steel structure bridge installation hanging apparatus according to claim 1, it is characterised in that the side of second beam body It is provided with rack on wall along its length, first beam body is provided with the first gear engaged with the rack, described the The axis of one gear is vertical, and the first gear is engaged with the rack, and the first gear is also associated with what is be coaxial therewith First sprocket wheel, first sprocket wheel is connected with the chain engaged;The chain passes through the column.
3. steel structure bridge installation hanging apparatus according to claim 2, it is characterised in that the column is provided with the Two sprocket wheels, the axis of second sprocket wheel is vertical, and the chain is closing structure, and the chain is nibbled with second sprocket wheel Close.
4. steel structure bridge installation hanging apparatus according to claim 3, it is characterised in that the column is hollow knot Structure, the column includes the riser for connecting the cantilever beam, and the chain passes through the riser;Second sprocket wheel is located at described Inside column;Second steering sprocket key is connected with power transmission shaft, the power transmission shaft and is also associated with first bevel gear;First cone Gear engagement is connected with second bevel gear, and the axis of the second bevel gear is level;The second bevel gear is connected with driving Axle, the drive shaft is rotated with the column and is connected, and the end of the drive shaft is extended to outside the column, and drive shaft End is connected with handwheel.
5. steel structure bridge installation hanging apparatus according to claim 4, it is characterised in that have inside the column Horizontally disposed connecting plate, the connecting plate is located at the top of second sprocket wheel, and the first bevel gear is located at described second The lower section of sprocket wheel;The power transmission shaft is rotated with the connecting plate and is connected;The side relative with the riser is opened up on the column There is end cap.
6. steel structure bridge installation hanging apparatus according to claim 4, it is characterised in that set on the inside of the column Limited location plate, the limiting plate is horizontally disposed;The limiting plate is provided with cunning close to the side of the second bevel gear Sliding block is slidably connected in groove, the chute, the sliding block is provided with limiting tooth, and the limiting tooth is nibbled with the second bevel gear Close;Spring is additionally provided with the chute, the spring is contradicted with the sliding block;The sliding block is connected with push rod, the spring And push rod is located at the both sides of the push rod respectively;The column is stretched out in the end of the push rod.
7. steel structure bridge installation hanging apparatus according to claim 6, it is characterised in that the section of the chute is Large semi-circular.
8. steel structure bridge installation hanging apparatus according to claim 6, it is characterised in that the end position of the push rod Between the handwheel and the column.
CN201710362848.2A 2017-05-22 2017-05-22 A kind of steel structure bridge installation hanging apparatus Pending CN106966305A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201710362848.2A CN106966305A (en) 2017-05-22 2017-05-22 A kind of steel structure bridge installation hanging apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201710362848.2A CN106966305A (en) 2017-05-22 2017-05-22 A kind of steel structure bridge installation hanging apparatus

Publications (1)

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CN106966305A true CN106966305A (en) 2017-07-21

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CN201710362848.2A Pending CN106966305A (en) 2017-05-22 2017-05-22 A kind of steel structure bridge installation hanging apparatus

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109179226A (en) * 2018-11-26 2019-01-11 广东电网有限责任公司 A kind of lightweight rack-driving telescopic arm
CN113200467A (en) * 2021-05-28 2021-08-03 张存生 Small-size hoisting accessory

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1611326A (en) * 1924-04-07 1926-12-21 Elwell Parker Electric Co Extensible boom
US4169338A (en) * 1976-09-03 1979-10-02 A/S Normar Telescopic boom
CN2059156U (en) * 1989-12-05 1990-07-11 依工 Small crane mounted on truck
CN202967922U (en) * 2012-12-06 2013-06-05 盈都桥梁钢构工程有限公司 Simple hoisting device for mounting steel structural bridge
CN205132958U (en) * 2015-10-26 2016-04-06 中国十七冶集团有限公司 Transportation of flat small -size component and hoist and mount are supported hoist and mount and are put
CN205419571U (en) * 2016-03-03 2016-08-03 上汽大众汽车有限公司 Sword is jack -up instrument for tower

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1611326A (en) * 1924-04-07 1926-12-21 Elwell Parker Electric Co Extensible boom
US4169338A (en) * 1976-09-03 1979-10-02 A/S Normar Telescopic boom
CN2059156U (en) * 1989-12-05 1990-07-11 依工 Small crane mounted on truck
CN202967922U (en) * 2012-12-06 2013-06-05 盈都桥梁钢构工程有限公司 Simple hoisting device for mounting steel structural bridge
CN205132958U (en) * 2015-10-26 2016-04-06 中国十七冶集团有限公司 Transportation of flat small -size component and hoist and mount are supported hoist and mount and are put
CN205419571U (en) * 2016-03-03 2016-08-03 上汽大众汽车有限公司 Sword is jack -up instrument for tower

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109179226A (en) * 2018-11-26 2019-01-11 广东电网有限责任公司 A kind of lightweight rack-driving telescopic arm
CN109179226B (en) * 2018-11-26 2023-08-25 广东电网有限责任公司 Lightweight rack transmission telescopic arm
CN113200467A (en) * 2021-05-28 2021-08-03 张存生 Small-size hoisting accessory

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Application publication date: 20170721