CN103058083B - Bolt sphere truss gig - Google Patents

Bolt sphere truss gig Download PDF

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Publication number
CN103058083B
CN103058083B CN201210592470.2A CN201210592470A CN103058083B CN 103058083 B CN103058083 B CN 103058083B CN 201210592470 A CN201210592470 A CN 201210592470A CN 103058083 B CN103058083 B CN 103058083B
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China
Prior art keywords
bolt
frame
bolt sphere
truss
base
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CN201210592470.2A
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CN103058083A (en
Inventor
刘付亚福
赵晓彬
刘志强
劳锦洪
林谷
杨轶
尹维元
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GUANGZHOU THIRD CONSTRUCTION ENGINEERING Co
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GUANGZHOU THIRD CONSTRUCTION ENGINEERING Co
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Abstract

The invention discloses a kind of bolt sphere truss gig, include bolt sphere truss, chain sling and engine installation, described bolt sphere truss comprises base, frame body and arm frame, described frame body is fixedly mounted on described base, described arm frame is fixedly connected on it described frame, and arm frame has angle of inclination relative to frame body and makes the formation of the below of this arm frame hang a year space, described chain sling is arranged on described bolt sphere truss, this chain sling matches with described engine installation, make this chain sling can carry in space material of slinging hanging.This bolt sphere truss lifting function upgrades hangs the material that volume is larger and weight is heavier, and easy to operate, control easy, safe and reliable, this bolt sphere truss gig is except installing on the ground in addition, can also be arranged in existing construction of structures, place strong adaptability, and install or remove easily, reusable, economic benefit is obvious.

Description

Bolt sphere truss gig
Technical field
The present invention relates to a kind of material lifting weight-lifting equipment, particularly relate to a kind of bolt sphere truss gig.
Background technology
In building engineering construction, as the building ground at south China, usually take derrick hoister improving material, in the building ground of northern China, usually adopt portal frame gig improving material.But existing derrick hoister and portal frame gig exist following defect: one be well cabinet frame or portal frame is assemble with angle steel, so improving material is comparatively light, generally at below 1.6t; Two is that the cage of derrick hoister is constrained in well cabinet frame and moves up and down, thus this machine promotes the small volume of object, cage size can not be greater than, generally can not be greater than 2.5m × 1.8m × 1.8m, and the hanging scaffold of portal frame gig is constrained in its portal frame and moves up and down, thus the volume of this machine lifting object is also less, can not be greater than hanging scaffold size, generally can not be greater than 2m × 1.8m × 1.8m; Three is that the underframe area of derrick hoister or portal frame gig is comparatively large, generally can only install on the ground.
Summary of the invention
Based on this, the invention reside in the defect overcoming prior art, provide a kind of bolt sphere truss gig, this lifting function upgrades hangs the material that volume is larger and weight is heavier.
Its technical scheme is as follows:
A kind of bolt sphere truss gig, include bolt sphere truss, chain sling and engine installation, described bolt sphere truss comprises base, frame body and arm frame, described frame body is fixedly mounted on described base, described arm frame is fixedly connected on it described frame, and arm frame has angle of inclination relative to frame body and makes the formation of the below of this arm frame hang a year space, described chain sling is arranged on described bolt sphere truss, this chain sling matches with described engine installation, makes this chain sling can carry in space material of slinging hanging.
Below further technical scheme is described:
The leading section of described frame body forms the first planar structure, and the leading section of described arm frame forms the second planar structure, the intersection line of this first planar structure and the second planar structure be one with the straight line of base place plane parallel.
Described bolt sphere truss comprises multiple triangular element, and described frame body and arm frame build by triangular element.
Described triangular element comprises bolt shank and bolt sphere, is fixedly linked between two adjacent bolt shanks by described bolt sphere.
Described bolt shank is linear pattern bolt shank, the two ends of this linear pattern bolt shank are equipped with bolt end, bolt end is provided with thread, and described bolt sphere is provided with screw, and bolt end is by making bolt shank be fixedly connected with bolt sphere in the screw described in screw-in.
Described base comprises upright support post and links steel pipe, is connected between two adjacent upright support post by the described steel pipe that links.
Described base is triangle base, described upright support post is set to three, upright support post includes base plate, floor, column steel pipe, connecting panel and bolt sphere, described base plate is fixedly connected on the lower end of column steel pipe, also be fixed by described floor between base plate and column steel pipe, described connecting panel is fixedly mounted on the upper end of column steel pipe, bolt sphere described in this connecting panel is connected by described floor, described frame body is arranged on described base with described being fixedly connected with of bolt sphere by it.
Described chain sling includes guiding fixed pulley, steel rope and suspension hook, this suspension hook is provided with movable pulley, described guiding fixed pulley is fixedly mounted on described bolt sphere truss, one end of described steel rope is fixed on the front end of described arm frame, and the other end of steel rope is connected on described engine installation wearing after described movable pulley and guiding fixed pulley.
Described guiding fixed pulley is set to three, and three guiding fixed pulleys are fixedly mounted on the junction of frame body and base, frame body and the corner of arm frame and the summit place of arm frame leading section respectively.
Described engine installation is winch.
Below the advantage of preceding solution or principle are described:
1, described arm frame has angle of inclination relative to frame body and makes bolt sphere truss gig below its arm frame, form larger hanging to carry a space, for traditional portal frame gig or derrick hoister, this bolt sphere truss gig hangs at it that to carry in space the constraint that the material that lifts by crane spatially is subject to less, thus the volume of material that this bolt sphere truss gig can promote can be larger, and weight can be heavier.In addition, the cooperation between described engine installation, chain sling and bolt sphere truss, makes this bolt sphere truss gig also have easy to operate, easy control and the advantage such as safe and reliable when improving material.
2, the intersection line of described first planar structure and the second planar structure be one with the straight line of base place plane parallel, thus material hang carry in space lift by crane time, only be subject to the constraint of the front plan of bolt sphere truss, and it is unfettered on the direction in other face, thus, this makes this bolt sphere truss promote function and upgrades the material that volume is larger, weight is heavier further.
3, described bolt sphere truss builds by triangular element, described bolt sphere truss can be made structurally very firm, thus be conducive to the larger material of hoisting weight.
4, be fixedly linked by described bolt sphere between different bolt shanks, and the bolt end of bolt shank is by making bolt shank be fixedly connected with bolt sphere in the screw described in screw-in, the well cabinet frame then assembled compared to tradition angle steel or portal frame, such connection structure makes described bolt sphere truss can bear larger weight on the one hand, the installation and removal of bolt sphere truss is also made to become convenient on the other hand, thus this bolt sphere truss promotes function repeated usage, economic benefit is obvious.
5, described base comprises upright support post and links steel pipe, be connected by the described steel pipe that links between different upright support post, then compared to underframe or the base of traditional derrick hoister or portal frame gig, the base area of this bolt sphere truss gig is less, thus this bolt sphere truss gig not only can be installed on the ground, can also install in existing construction of structures, place strong adaptability.
6, described upright support post includes base plate, floor, column steel pipe, connecting panel and described bolt sphere, the structure structure of this upright support post, and upright support post with link coordinating of steel pipe, make described base foundation firm, thus whole bolt sphere truss can be supported.
7, one end of described steel rope is fixed on the front end of described arm frame, and the other end is connected on described engine installation wearing after described movable pulley and guiding fixed pulley, makes suspension hook carry in space described hanging material of slinging.Wherein, the fixed pulley that leads plays directional tagging to steel rope.
8, three installation sites of guiding fixed pulley on bolt sphere truss, suspension hook can be made to carry in space material of slinging more easily hanging, and lifting operation is more prone to.
9, described engine installation is winch, then rotated forward by the reel of winch and be involved in steel rope or reversion and release steel rope and be elevated suspension hook, thus lifting handling material.
Accompanying drawing explanation
Fig. 1 is the perspective view of the bolt sphere truss gig described in the embodiment of the present invention.
Fig. 2 is the front view of the bolt sphere truss gig described in the embodiment of the present invention.
Fig. 3 is the birds-eye view of the base described in the embodiment of the present invention.
Fig. 4 is the right elevation of Fig. 3.
Fig. 5 is the structural representation of the upright support post described in the embodiment of the present invention.
Fig. 6 is the structural representation of the bolt shank described in the embodiment of the present invention.
Fig. 7 is the structural representation of the bolt sphere described in the embodiment of the present invention.
Description of reference numerals:
1, base, 101, upright support post, 1011, base plate, 1012, column steel pipe, 1013, connecting panel, 1014, floor, 102, link steel pipe, 2, frame body, 3, arm frame, 231, bolt sphere, 2311, screw, 232, bolt shank, 2321, bolt end, 4, suspension hook, 5, lead fixed pulley, and 6, steel rope, 7, winch.
Detailed description of the invention
Below embodiments of the invention are described in detail:
As shown in Figures 1 to 7, a kind of bolt sphere truss gig, include bolt sphere truss, chain sling and engine installation, described bolt sphere truss comprises base 1, frame body 2 and arm frame 3, described frame body 2 is fixedly mounted on described base 1, described arm frame 3 is fixedly connected on described frame body 2, and arm frame 3 has angle of inclination relative to frame body 2 and makes the formation of the below of this arm frame 3 hang a year space, described chain sling is arranged on described bolt sphere truss, this chain sling matches with described engine installation, make this chain sling can carry in space material of slinging hanging.
Wherein, the leading section of described frame body 2 forms the first planar structure, and the leading section of described arm frame 3 forms the second planar structure, the intersection line of this first planar structure and the second planar structure be one with the straight line of base 1 place plane parallel.Described bolt sphere truss comprises multiple triangular element, and described frame body 2 and arm frame 3 build by triangular element.Described triangular element comprises bolt shank 232 and bolt sphere 231, is fixedly linked between two adjacent bolt shanks 232 by described bolt sphere 231.Described bolt shank 232 is linear pattern bolt shank 232, the two ends of this linear pattern bolt shank 232 are equipped with bolt end 2321, bolt end 2321 is provided with thread, described bolt sphere 231 is provided with screw 2311, and bolt end 2321 is by making bolt shank 232 be fixedly connected with bolt sphere 231 in the screw 2311 described in screw-in.Described base 1 is triangle base, it comprise three upright support post 101 and three link steel pipe 102, be connected by the described steel pipe 102 that links between two adjacent upright support post 101.Described upright support post 101 includes base plate 1011, floor 1014, column steel pipe 1012, connecting panel 1013 and bolt sphere 231, described base plate 1011 is fixedly connected on the lower end of column steel pipe 1012, also be fixed by described floor 1014 between base plate 1011 and column steel pipe 1012, described connecting panel 1013 is fixedly mounted on the upper end of column steel pipe 1012, this connecting panel 1013 connects described bolt sphere 231 by described floor 1014, and described frame body 2 is arranged on described base 1 with described being fixedly connected with of bolt sphere 231 by it.Described chain sling includes three guiding fixed pulleys 5, steel rope 6 and suspension hook 4, and this suspension hook 4 is provided with movable pulley, and described engine installation is winch 7.Three guiding fixed pulleys 5 are fixedly mounted on the junction of frame body 2 and base 1, frame body 2 and the corner of arm frame 3 and the summit place of arm frame 3 leading section respectively.One end of described steel rope 6 is fixed on the front end of described arm frame 3, and the other end of steel rope 6 is connected on the reel of described winch 7 wearing after described movable pulley and guiding fixed pulley 5.
Described " leading section " carries space towards described hanging.
When building described bolt sphere truss, first base 1 is arranged in ground or construction of structures, bolt shank 232 is screwed in again on the screw 2311 of the bolt sphere 231 of base 1, then hold-down bolt ball 231 on bolt shank 232, bolt sphere 231 screws in again bolt shank 232...... Using such method and repeats to screw in and install to erect whole bolt sphere truss.The height of whole bolt sphere truss can change according to the increase and decrease of bolt sphere 231 and bolt shank 232 quantity.
The present embodiment has the following advantages or principle:
1, described arm frame 3 has angle of inclination relative to frame body 2 and makes bolt sphere truss gig below its arm frame 3, form larger hanging to carry a space, for traditional portal frame gig or derrick hoister, this bolt sphere truss gig hangs at it that to carry in space the constraint that the material that lifts by crane spatially is subject to less, thus this bolt sphere truss gig volume of material that can promote is larger, weight is heavier, can reach more than three times of derrick hoister and portal frame gig.In addition, the cooperation between described engine installation, chain sling and bolt sphere truss, makes this bolt sphere truss gig also have easy to operate, easy control and the advantage such as safe and reliable when improving material.
2, the intersection line of described first planar structure and the second planar structure be one with the straight line of base 1 place plane parallel, then material hang carry in space lift by crane time, only be subject to the constraint of the front plan of bolt sphere truss, and it is unfettered on the direction in other face, thus, suffer restraints on the direction in four faces relative to the cage of derrick hoister and the material of handling thereof, the hanging scaffold of portal frame gig and the material of handling thereof suffer restraints on the direction in two faces, the material that the bolt sphere truss gig of the present embodiment promotes only suffers restraints on the direction in a face, namely the constraint on front plan direction, it is larger that this makes this bolt sphere truss lifting function upgrade volume further, the material that weight is heavier.
3, described bolt sphere truss builds by triangular element, described bolt sphere truss can be made structurally very firm, thus be conducive to the larger material of hoisting weight.
4, be fixedly linked by described bolt sphere 231 between different bolt shanks 232, and the bolt end 2321 of bolt shank 232 is by making bolt shank 232 be fixedly connected with bolt sphere 231 in the screw 2311 described in screw-in, the well cabinet frame then assembled compared to tradition angle steel or portal frame, such connection structure makes described bolt sphere truss can bear larger weight on the one hand, the installation and removal of bolt sphere truss is also made to become convenient on the other hand, thus this bolt sphere truss promotes function repeated usage, economic benefit is obvious.In addition, described screw 2311 can as required in bolt sphere 231 position of different directions arrange, thus bolt shank 232 can be screwed in as required on the position of bolt sphere 231 different directions.
5, described base 1 comprises upright support post 101 and links steel pipe 102, be connected by the described steel pipe 102 that links between different upright support post 101, then compared to underframe or the base 1 of traditional derrick hoister or portal frame gig, base 1 area of this bolt sphere truss gig is less, thus this bolt sphere truss gig not only can be installed on the ground, can also install in existing construction of structures, place strong adaptability.
6, described upright support post 101 includes base plate 1011, floor 1014, column steel pipe 1012, connecting panel 1013 and described bolt sphere 231, the structure structure of this upright support post 101, and upright support post 101 with link coordinating of steel pipe 102, make described base 1 foundation firm, thus whole bolt sphere truss can be supported.
7, one end of described steel rope 6 is fixed on the front end of described arm frame 3, and the other end is connected on described engine installation wearing after described movable pulley and guiding fixed pulley 5, makes suspension hook 4 can carry in space described hanging material of slinging.Wherein, the fixed pulley 5 pairs of steel ropes 6 that lead play directional tagging.
8, three installation sites of guiding fixed pulley 5 on bolt sphere truss, suspension hook 4 can be made to carry in space material of slinging more easily hanging, and lifting operation is more prone to.
9, described engine installation is winch 7, then rotated forward by the reel of winch 7 and be involved in steel rope 6 or reversion and release steel rope 6 and be elevated suspension hook 4, thus lifting handling material.
The above embodiment only have expressed the specific embodiment of the present invention, and it describes comparatively concrete and detailed, but therefore can not be interpreted as the restriction to the scope of the claims of the present invention.It should be pointed out that for the person of ordinary skill of the art, without departing from the inventive concept of the premise, can also make some distortion and improvement, these all belong to protection scope of the present invention.

Claims (7)

1. a bolt sphere truss gig, it is characterized in that, include bolt sphere truss, chain sling and engine installation, described bolt sphere truss comprises base, frame body and arm frame, described frame body is fixedly mounted on described base, described arm frame is fixedly connected on it described frame, and arm frame has angle of inclination relative to frame body and makes the formation of the below of this arm frame hang a year space, described chain sling is arranged on described bolt sphere truss, this chain sling matches with described engine installation, make this chain sling can carry in space material of slinging hanging, described bolt sphere truss comprises multiple triangular element, and described frame body and arm frame build by triangular element, described triangular element comprises bolt shank and bolt sphere, is fixedly linked between two adjacent bolt shanks by described bolt sphere, described bolt shank is linear pattern bolt shank, the two ends of this linear pattern bolt shank are equipped with bolt end, bolt end is provided with thread, and described bolt sphere is provided with screw, and bolt end is by making bolt shank be fixedly connected with bolt sphere in the screw described in screw-in.
2. bolt sphere truss gig according to claim 1, it is characterized in that, the leading section of described frame body forms the first planar structure, the leading section of described arm frame forms the second planar structure, the intersection line of this first planar structure and the second planar structure be one with the straight line of base place plane parallel.
3. bolt sphere truss gig according to claim 1, is characterized in that, described base comprises upright support post and links steel pipe, is connected between two adjacent upright support post by the described steel pipe that links.
4. bolt sphere truss gig according to claim 3, it is characterized in that, described base is triangle base, described upright support post is set to three, upright support post includes base plate, floor, column steel pipe, connecting panel and bolt sphere, described base plate is fixedly connected on the lower end of column steel pipe, also be fixed by described floor between base plate and column steel pipe, described connecting panel is fixedly mounted on the upper end of column steel pipe, this connecting panel connects the bolt sphere of described upright support post by described floor, described frame body is arranged on described base with being fixedly connected with of bolt sphere of described upright support post by it.
5. bolt sphere truss gig according to claim 1, it is characterized in that, described chain sling includes guiding fixed pulley, steel rope and suspension hook, this suspension hook is provided with movable pulley, described guiding fixed pulley is fixedly mounted on described bolt sphere truss, one end of described steel rope is fixed on the front end of described arm frame, and the other end of steel rope is connected on described engine installation wearing after described movable pulley and guiding fixed pulley.
6. bolt sphere truss gig according to claim 5, it is characterized in that, described guiding fixed pulley is set to three, and three guiding fixed pulleys are fixedly mounted on the junction of frame body and base, frame body and the corner of arm frame and the summit place of arm frame leading section respectively.
7. bolt sphere truss gig according to claim 1, is characterized in that, described engine installation is winch.
CN201210592470.2A 2012-12-31 2012-12-31 Bolt sphere truss gig Active CN103058083B (en)

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Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104060840A (en) * 2014-06-25 2014-09-24 广州市第三建筑工程有限公司 Construction method for lifting large-span dome net rack by using bolt sphere truss lifter
CN110526136A (en) * 2019-08-30 2019-12-03 贵州大学 A kind of detachable crane formula crane

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB373565A (en) * 1931-02-28 1932-05-26 Andre Faure Improvements in or relating to jib cranes
CN1474069A (en) * 2003-05-22 2004-02-11 上海交通大学 High-rigidity synchronously spreading folded space extension arm
DE202006011099U1 (en) * 2006-02-23 2007-07-05 Liebherr-Werk Ehingen Gmbh Telescope tower, has multiple inserted pipes with flange on one side, and are movable towards each other for setting up tower
CN201438607U (en) * 2009-06-29 2010-04-14 中国电力工程顾问集团中南电力设计院 Steel structure bracket of transformation equipment
CN201737614U (en) * 2010-05-21 2011-02-09 中国一冶集团有限公司 Truss type device for cleaning waste in furnace rotatably
CN201794170U (en) * 2010-09-27 2011-04-13 北京市新发京建工贸有限公司 Movable end of steel support
CN202181611U (en) * 2011-08-08 2012-04-04 中冶建工集团有限公司 Single-frame saddle-shaped pipe truss
CN203033690U (en) * 2012-12-31 2013-07-03 广州市第三建筑工程有限公司 Bolt sphere truss elevator

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH09242350A (en) * 1996-03-13 1997-09-16 Okabe Co Ltd Folding space truss
JPH11190063A (en) * 1997-12-26 1999-07-13 Nippon Chuzo Kk Truss joint construction
JP2000016125A (en) * 1998-06-30 2000-01-18 Nippon Light Metal Co Ltd Fixing structure to foundation of an aluminum alloy pipe utility pole for supporter in electric car tramway

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB373565A (en) * 1931-02-28 1932-05-26 Andre Faure Improvements in or relating to jib cranes
CN1474069A (en) * 2003-05-22 2004-02-11 上海交通大学 High-rigidity synchronously spreading folded space extension arm
DE202006011099U1 (en) * 2006-02-23 2007-07-05 Liebherr-Werk Ehingen Gmbh Telescope tower, has multiple inserted pipes with flange on one side, and are movable towards each other for setting up tower
CN201438607U (en) * 2009-06-29 2010-04-14 中国电力工程顾问集团中南电力设计院 Steel structure bracket of transformation equipment
CN201737614U (en) * 2010-05-21 2011-02-09 中国一冶集团有限公司 Truss type device for cleaning waste in furnace rotatably
CN201794170U (en) * 2010-09-27 2011-04-13 北京市新发京建工贸有限公司 Movable end of steel support
CN202181611U (en) * 2011-08-08 2012-04-04 中冶建工集团有限公司 Single-frame saddle-shaped pipe truss
CN203033690U (en) * 2012-12-31 2013-07-03 广州市第三建筑工程有限公司 Bolt sphere truss elevator

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