CN102518335A - Crane lifting and operation platform comprehensive equipment - Google Patents

Crane lifting and operation platform comprehensive equipment Download PDF

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Publication number
CN102518335A
CN102518335A CN2011104176165A CN201110417616A CN102518335A CN 102518335 A CN102518335 A CN 102518335A CN 2011104176165 A CN2011104176165 A CN 2011104176165A CN 201110417616 A CN201110417616 A CN 201110417616A CN 102518335 A CN102518335 A CN 102518335A
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China
Prior art keywords
platform
lifting
tower
job platform
aerial
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Pending
Application number
CN2011104176165A
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Chinese (zh)
Inventor
王东红
李志国
何劝云
田国承
牛雅静
卢宏伟
鲍会丽
田学坤
李育平
杨国栋
肖红涛
陈浩
孙红岩
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Institute of Building Mechanization of Chinese Academy of Building Research
Langfang Kaibo Construction Machinery Technology Co Ltd
Original Assignee
Institute of Building Mechanization of Chinese Academy of Building Research
Langfang Kaibo Construction Machinery Technology Co Ltd
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Application filed by Institute of Building Mechanization of Chinese Academy of Building Research, Langfang Kaibo Construction Machinery Technology Co Ltd filed Critical Institute of Building Mechanization of Chinese Academy of Building Research
Priority to CN2011104176165A priority Critical patent/CN102518335A/en
Publication of CN102518335A publication Critical patent/CN102518335A/en
Pending legal-status Critical Current

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Abstract

The invention relates to crane lifting and operation platform comprehensive equipment, which comprises a top tower type crane, a steel wire rope type lifter, an upper overhead operation platform, a lower overhead operation platform and a gear and rack type lifter. The root of the upper overhead operation platform is hinged on a lower climbing rack, the steel wire rope type lifter is used for conveying concrete and other decorative materials and fireproof heat-insulation materials, the lower overhead operation platform is used for decorating and maintaining the inner wall of buildings such as towers, and the gear and rack type lifter is used for carrying constructors. The crane lifting and operation platform comprehensive equipment integrates advanced performances of various single machines, and integrates functions of carrying the constructors and conveying materials including reinforcing steel bars, the concrete, decorating materials, medium and small-sized machine tools and the like, the height of the equipment and the lengths and the shapes of the operation platforms can be automatically changed by means of lifting and combination along with change of construction height and change of an operation surface, installation and detachment are convenient and fast, and requirements of construction of buildings including large-sized chimney cooling towers can be met better.

Description

Lifting up-down and job platform are comprehensively equipped
Technical field
Patent of the present invention relates to a kind of lifting up-down and job platform is comprehensively equipped.
Background technology
For the building main body construction of tubular constructions such as large-scale chimney cooling tower, the simple and easy cage device that traditional construction machinery great majority drive for steel wire rope winch, or utilize construction elevator, be used for accomplishing transporting of material and personnel.These schemes all can not be taken into account transporting of personnel and material safely and effectively; And an engineering need dispose the associated working of many complete equipments and could accomplish construction task often; Original equipment cost, labour cost are very big; But inefficiency, safety problem is more, and the noise pollution that the plurality of devices associated working causes surrounding enviroment, energy consumption are all runed counter to existing industrial policy.
At present, the vertical transport of large-scale chimney cooling tower construction is mainly taked two kinds of multi-functional elevator and scaffold system associated working constructure scheme and multi-functional construction elevator and Hydraulic Lifting-up Level Bridge associated working constructure scheme.The shortcoming of first kind of constructure scheme is, the workload of scaffold building is big, and scaffold system and top passageway are constantly increased with the rising of construction layer, have brought a lot of extra work amounts to construction.The shortcoming of second kind of constructure scheme is, the crane gear at the Hydraulic Lifting-up Level Bridge top in using the at present performance that hoists is less relatively, and accommodation is limited; The adjustable standard knot that the bridge floor height of Hydraulic Lifting-up Level Bridge can only be taked to increase differing heights with the fine setting of construction speed is adjusted, concordant poor-performing, and this adjustment mode operates more loaded down with trivial detailsly, and workload is bigger.Above-mentioned shortcoming has all caused difficulty and inconvenient for large-scale cooling tower construction, and the constructions such as fitment operation of building inwall simultaneously also need other equipment to accomplish, and can't realize one-machine-multi-function.
Summary of the invention
The purpose of this invention is to provide a kind of lifting up-down and job platform comprehensively equips; It is little to solve in the tower tube class building construction processes such as present large-scale chimney cooling tower the construction operation face, and vertical height is big, and profile presents abnormal shape; The top pillar crane is because limited space is dismantled inconvenient problem; Also to solve the flexible problem that aerial work platform goes up and down and safety technics, the land lengths shape of locking are easy to change and make up; Convenience problem in the time of also will solving guide rope hoist work.
For achieving the above object; Technical scheme of the present invention is: a kind of lifting up-down and job platform are comprehensively equipped; From falling down to comprise successively top pillar crane, guide rope hoist, last aerial job platform, following aerial platform and pinion and-rack hoist; It is characterized in that said guide rope hoist, last aerial job platform, following aerial platform and pinion and-rack hoist are arranged on the body of the tower standard knot of top pillar crane.
Further, said top pillar crane comprises undersetting, down body of the tower, boom and slew gear, and said body of the tower down is connected the top of top pillar crane climbing device through undersetting, and boom is connected down the body of the tower top through slew gear; Be provided with the tower winding mechanism that comprises tie system, jib lubbing mechanism, lifting mechanism, counterweight and amplitude variation trolley on the said boom, also be provided with the tower balance weight mechanism of the motorized winch batten that comprises counterweight, lifting counterweight on the said boom.
Further, said guide rope hoist comprises and promotes hopper, chain bucket structure and pulley bracket, and said chain bucket structure is installed on the bracing frame, and bracing frame links together through the bearing pin and the frame that climbs down, and the frame that time climbs is fixed on the body of the tower standard knot; Said pulley bracket is connected the side of the following body of the tower of pillar crane through bearing pin, and pulley is fixed on the pulley bracket; Said lifting hopper runs on body of the tower standard knot inside through the haulage cable that is wrapped on the pulley under the effect of chain bucket structure.
Further, saidly aerial job platform and comprise body of the tower standard knot, climb frame, platform pull bar and job platform down; The job platform root is hinged on down on the frame that climbs; The platform pull bar has two groups to be symmetrically distributed in the job platform left and right sides; The otic placode at one end of platform pull bar and platform middle part is articulated and connected; The other end is articulated and connected with the otic placode that connects on the frame that climbs down, and the frame left and right sides of climbing down is provided with continuous distributed and equally spaced aperture.This aperture can realize that job platform is concordant well with the construction operation face in the construction operation process, so that adapt to the stepless variation of construction operation height better.
Further, said aerial work platform down is formed by connecting through bearing pin standard knot, which is provided with hydraulic jacking device, and checkered steel plate is laid at the top of platform framework, and protective fence is housed around the platform.
Further, said body of the tower standard knot is provided with the tooth bar of mate gear rack-and-pinion hoist.Said pinion and-rack hoist is mainly used in constructor's vertical transport, the boom of dismounting top pillar crane and the transportation of counterweight when also can be used for constructing end.
When adopting technique scheme; Described lifting up-down of patent of the present invention and job platform are comprehensively equipped, and functions such as the defeated construction operation personnel of integrated each single machine advanced feature, transporting something containerized, material such as reinforcing bar, concrete, finishing material, middle-size and small-size facility are in one, oneself height and job platform length shapes can self-service up-down and combination, the novel efficiently lifting transportation of easy installation and removal and construction operation be comprehensively adorned with scope of operation variation with construction height, in addition; Go up aerial job platform and adopt hydraulic driving mode; Guide rope hoist adopts the wire rope traction to drive, and the pinion and-rack hoist adopts pinion and-rack to drive mutually noninterfere each other; Independent operating separately; Transportation of realization level and vertical transport can be carried out the decorations operation of building inwall simultaneously flexibly, improve the utilization rate of construction machinery greatly.
Description of drawings
Below in conjunction with the accompanying drawing and the specific embodiment the present invention is done further detailed explanation:
Fig. 1 is the overall structure sketch map that lifting up-down of the present invention and job platform are comprehensively equipped embodiment;
Fig. 2 is the sketch map of top pillar crane among Fig. 1;
Fig. 3 is the sketch map of row's rope system I among Fig. 1;
Fig. 4 is the sketch map of row's rope system II among Fig. 1;
Fig. 5 is the sketch map of steel wire rope type construction elevator and last aerial job platform among Fig. 1.
Reference numeral: 1. top pillar crane; 2. guide rope hoist; 3. go up aerial job platform; 4. descend the aerial work platform; 5. pinion and-rack hoist; 6. amplitude variation trolley; 7. boom; 8. tie system; 9. jib lubbing mechanism; 10. lifting mechanism; 11. motorized winch batten; 12. counterweight; 13. slew gear; 14. following body of the tower; 15. undersetting; 16. jib pulley; 17. back row's rope sheave; 18. wire rope; 19. front-seat rope sheave; 20. pulley; 21. little pulley sheave; 22. lifting hook pulley; 23. assembly pulley; 24. boom the 4th joint; 25. boom the 3rd joint; 26. boom second joint; 27. bearing pin; 28. boom first segment; 29. pulley; 30. haulage cable; 31. pulley bracket; 32. climbing device; 33. body of the tower standard knot; 34. chain bucket structure; 35. bracing frame; 36. concrete hopper; 37. platform pull bar; 38. job platform; 39. under the frame that climbs; 40. lifting hopper.
The specific embodiment
As shown in Figure 1; This lifting up-down and job platform are comprehensively equipped; Comprise top pillar crane 1, guide rope hoist 2, go up aerial job platform 3, aerial work platform 4 and pinion and-rack hoist 5 down, said top pillar crane 1 is installed in the top of climbing device 32 through undersetting 15, said guide rope hoist 2 drives through haulage cable 30 and promotes hoppers 40 and move up and down; Vertically run on body of the tower standard knot 33 inside; Said aerial job platform 3 relies on climbing devices 32 jacking supernumerary segments, increases the equipment height, through the equally spaced aperture of row's continuous distributed on two angle steel of frame 39 symmetrical distributions of climbing down; Going up aerial job platform 3 can be accurately more concordant with the working face height; Be convenient to the transportation of material level, said pinion and-rack hoist 5 transports the operating personnel safely through cage and arrives construction layer, and transport on the ground that also can use cage to accomplish parts when self removing.
Like Fig. 2, Fig. 3 and shown in Figure 4, said top pillar crane 1 is mainly by body of the tower 14, boom 7, tie system 8, undersetting 15, motorized winch batten 11, jib lubbing mechanism 10, lifting mechanism 9, slew gear 13, counterweight 12 and amplitude variation trolley 6 are formed down.Wherein descend body of the tower 14 to be connected the top of climbing device 32 through undersetting 15; Boom 7 is connected down body of the tower 14 tops through slew gear 13; In work progress; Row rope system I is made up of wire rope 18, front-seat rope sheave 19, back row's rope sheave 17 and jib pulley 16, and wherein front-seat rope sheave 19, back row's rope sheave 17 are on the boom 7 between lifting mechanism 10 amplitude variation trolleys 6, and jib pulley 16 is at lifting mechanism 10 and arrange on the boom 7 between the rope sheave 19; Wire rope 18 1 ends are connected with lifting mechanism 10; The other end is walked around dolly pulley 21, lifting hook pulley 22 on the amplitude variation trolley 6 after walking around front-seat rope sheave 19, back row's rope sheave 17, jib pulley 16 successively again, is connected the jib end of boom 7 at last; When the construction end needs dismounting; Move amplitude variation trolley 6 to boom the 4th joint 24, through changing row's rope mode, wire rope 18 1 ends that arrange rope system II this moment are connected with lifting mechanism 10; After the other end is walked around assembly pulley 23 on the tie system 8, row's rope sheave 17, jib pulley 16 successively; Walk around dolly pulley 21, lifting hook pulley 22 on the amplitude variation trolley 6 again, be connected the jib end of boom 7 at last, dismounting is connected pull bar 8 and boom second saves 26 bearing pin 27; Make boom freely hang down, start the pinion and-rack hoist so that boom first segment 25, second saves the 26, the 3rd joint 28 and can arrive cage cage top; Utilize can sling quickly and easily counterweight 12 of motorized winch batten 11 to arrive cage cages top.
As shown in Figure 5, said guide rope hoist 2 is mainly formed by promoting hopper 40, chain bucket structure 34, bracing frame 35, concrete hopper 36, pulley bracket 31, pulley 29 and haulage cable 30.Wherein chain bucket structure 34 is installed on the bracing frame 35; Bracing frame 35 through bearing pin with under the frame 39 that climbs link together; Pulley bracket 31 is positioned at the side of body of the tower 14 down; Be connected with following body of the tower 14 through bearing pin, pulley 29 is fixed on the pulley bracket 31, promotes hopper 40 and runs on body of the tower standard knot 33 inside through the haulage cable 30 that is wrapped on the pulley 29.
As shown in Figure 5, saidly aerial job platform 3 mainly by body of the tower standard knot 33, climb frame 39, platform pull bar 37, job platform 38 formed down.Job platform 38 roots are hinged on down on the frame 39 that climbs, and platform pull bar 37 has two groups to be symmetrically distributed in job platform 38 left and right sides, and the otic placode at an end of platform pull bar 37 and platform middle part is articulated and connected, and the other end is articulated and connected with the otic placode that connects on the frame 39 that time climbs.
Said aerial work platform 4 is down connected through bearing pin by the standard knot of one group of truss-like; Said standard knot is welded by shaped steel; Checkered steel plate is laid at the top, and protective fence is housed around the platform, adopts the hydraulic jack hoisting way; Realize the up-down of aerial work platform down, the platform shape can change and independent assortment with the building inwall.
Said pinion and-rack hoist 5 mainly is made up of hoist standard knot, cable rod, drive system, cage, cable coaster.Said drive system adopts the rack-and-pinion mode to drive, the full-enclosed structure that cage is welded by shaped steel, braided steel wire net and steel plate etc., and be provided with the import and export door; On the door electromechanical interlocking device is housed; Cage will quit work when the cage door is opened, and guarantee personnel's in the cage safety, and be furnished with monitoring system; Can show hoist self parameter and running status in real time; And can carry out the real-time voice prompting to some parameter or state, and give the driver with simple and clear prompting or alarm, guarantee that device security moves efficiently.Simultaneously common faults is provided simple and clear prompting, also make things convenient for the maintainer to make fault judgement rapidly, and safeguard fast.
The course of work of the comprehensive equipment of lifting up-down of the present invention and job platform is following: when operate as normal, utilize the suspension hook lifting reinforcing bar (or other building materials) of top pillar crane, utilize guide rope hoist to promote concrete and inwall ornament materials; When raising equipment according to the construction speed needs; The supernumerary segment position that the body of the tower that needs are increased is saved the tower crane for hoisting in top to climbing device; Utilize the power set on the climbing device that climbing device and the top pillar crane that is installed on it are risen along body of the tower; Soffit forms the space of a body of the tower standard knot in body of the tower top and climbing device, pushes the body of the tower joint then and fix promptly to have accomplished once to raise; Go up aerial job platform a duplex channel is provided, make the constructor concrete and reinforcing bar (or other building materials) successfully are transported to the construction point safe and efficiently; When aerial job platform is gone up in lifting according to the construction speed needs, go up aerial job platform through the rising of the hydraulic jack on the frame that climbs down, and can be according to the height of working face, aerial job platform makes it to adapt to the height of working face in the fine setting; Carry out the interior and the maintenance of chimney cooling Tata tube class building through the following aerial platform that distributes radially; Transport the constructor safely through the pinion and-rack hoist and arrive construction layer; When construction finishes the need dismounting; Conversion row rope mode utilizes the top pillar crane slowly to put down boom front joint; Utilize the motorized winch batten of top pillar crane to remove counterweight,, utilize hoist to be transported to ground its cage top that hangs onto the pinion and-rack hoist; Carry out the opposite process of supernumerary segment rising and remove the standard knot on body of the tower top, can utilize other crane gear to remove when making aerial job platform be reduced to minimum altitude.
Above-described only is preferred implementation of the present invention; Should be understood that; For a person skilled in the art, under the prerequisite that does not break away from structure of the present invention, can also make some distortion and improvement; These also should be regarded as protection scope of the present invention, and these can not influence effect and practical applicability that the present invention implements.

Claims (6)

1. lifting up-down and job platform are comprehensively equipped; From falling down to comprise successively top pillar crane (1), guide rope hoist (2), last aerial job platform (3), following aerial platform (4) and pinion and-rack hoist (5); It is characterized in that said guide rope hoist (2), last aerial job platform (3), following aerial platform (4) and pinion and-rack hoist (5) are arranged on the body of the tower standard knot (33) of top pillar crane (1).
2. lifting up-down as claimed in claim 1 and job platform are comprehensively equipped; It is characterized in that; Said top pillar crane (1) comprises undersetting (15), following body of the tower (14), boom (7) and slew gear (13); Said down body of the tower (14) is connected the top of top pillar crane (1) climbing device (32) through undersetting (15), and boom (7) is connected down body of the tower (14) top through slew gear (13); Be provided with the tower winding mechanism that comprises tie system (8), jib lubbing mechanism (9), lifting mechanism (10), counterweight (12) and amplitude variation trolley (6) on the said boom (7), also be provided with the tower balance weight mechanism of the motorized winch batten (11) that comprises counterweight (12), lifting counterweight (12) on the said boom (7).
3. lifting up-down as claimed in claim 2 and job platform are comprehensively equipped; It is characterized in that; Said guide rope hoist (2) comprises lifting hopper (40), chain bucket structure (34) and pulley bracket (31); Said chain bucket structure (34) is installed on the bracing frame (35), and bracing frame (35) links together through the bearing pin and the frame (39) that climbs down, and the frame (39) that time climbs is fixed on the body of the tower standard knot; Said pulley bracket (31) is connected the side of the following body of the tower (14) of pillar crane (1) through bearing pin, and pulley (29) is fixed on the pulley bracket (31); Said lifting hopper (40) runs on body of the tower standard knot (33) inside through the haulage cable (30) that is wrapped on the pulley (29) under the effect of chain bucket structure (34).
4. lifting up-down as claimed in claim 3 and job platform are comprehensively equipped, and it is characterized in that, the said aerial job platform (3) of comprises body of the tower standard knot (33), climb frame (39), platform pull bar (37) and job platform (38) down; Job platform (38) root is hinged on down on the frame that climbs (39); Platform pull bar (37) has two groups to be symmetrically distributed in job platform (38) left and right sides; The otic placode at one end of platform pull bar (37) and platform middle part is articulated and connected; The other end is articulated and connected with the otic placode that connects on the frame (39) that climbs down, and frame (39) left and right sides of climbing down is provided with continuous distributed and equally spaced aperture.
5. comprehensively equip like any described lifting up-down and job platform in the claim 1,2,3,4; It is characterized in that; Said aerial work platform (4) down is formed by connecting through bearing pin standard knot; Which is provided with hydraulic jacking device, checkered steel plate is laid at the top of platform framework, and protective fence is housed around the platform.
6. lifting up-down as claimed in claim 5 and job platform are comprehensively equipped, and it is characterized in that, said body of the tower standard knot (33) is provided with the tooth bar of mate gear rack-and-pinion hoist (5).
CN2011104176165A 2011-12-14 2011-12-14 Crane lifting and operation platform comprehensive equipment Pending CN102518335A (en)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108163781A (en) * 2017-11-24 2018-06-15 湖北华舟重工应急装备股份有限公司 A kind of vehicular Fast Installation rescues elevator
CN111350639A (en) * 2018-12-21 2020-06-30 西门子歌美飒可再生能源公司 Platform positioning system, method of operating a platform positioning system and wind turbine
CN112061998A (en) * 2020-09-07 2020-12-11 武汉市明煌建筑劳务有限公司 Steel structure tower crane for building bridge road construction
CN113622737A (en) * 2021-08-25 2021-11-09 江苏奥亚达高空工程有限公司 Scaffold-free steel chimney and manufacturing and mounting method thereof

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2072078U (en) * 1990-09-10 1991-02-27 上海市建筑施工技术研究所 Multifunctional combined tower crane
JP2009073599A (en) * 2007-09-19 2009-04-09 Shimizu Corp Supporting structure of tower crane and climbing method
CN202379620U (en) * 2011-12-14 2012-08-15 中国建筑科学研究院建筑机械化研究分院 Lifting and operating platform comprehensive equipment

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2072078U (en) * 1990-09-10 1991-02-27 上海市建筑施工技术研究所 Multifunctional combined tower crane
JP2009073599A (en) * 2007-09-19 2009-04-09 Shimizu Corp Supporting structure of tower crane and climbing method
CN202379620U (en) * 2011-12-14 2012-08-15 中国建筑科学研究院建筑机械化研究分院 Lifting and operating platform comprehensive equipment

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
孙在鲁: "《塔式起重机应用技术》", 30 June 2003 *

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108163781A (en) * 2017-11-24 2018-06-15 湖北华舟重工应急装备股份有限公司 A kind of vehicular Fast Installation rescues elevator
CN108163781B (en) * 2017-11-24 2019-09-27 中国船舶重工集团应急预警与救援装备股份有限公司 A kind of vehicular Fast Installation rescue elevator
CN111350639A (en) * 2018-12-21 2020-06-30 西门子歌美飒可再生能源公司 Platform positioning system, method of operating a platform positioning system and wind turbine
CN112061998A (en) * 2020-09-07 2020-12-11 武汉市明煌建筑劳务有限公司 Steel structure tower crane for building bridge road construction
CN113622737A (en) * 2021-08-25 2021-11-09 江苏奥亚达高空工程有限公司 Scaffold-free steel chimney and manufacturing and mounting method thereof

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Application publication date: 20120627