CN102653970A - Overhead roof production system and overhead roof pavement method - Google Patents
Overhead roof production system and overhead roof pavement method Download PDFInfo
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- CN102653970A CN102653970A CN2012101516530A CN201210151653A CN102653970A CN 102653970 A CN102653970 A CN 102653970A CN 2012101516530 A CN2012101516530 A CN 2012101516530A CN 201210151653 A CN201210151653 A CN 201210151653A CN 102653970 A CN102653970 A CN 102653970A
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Abstract
The invention provides an overhead roof production system and an overhead roof pavement method. The invention solves the problems that the construction requirements for a complicated roof are difficult to meet since a forming press in the prior art is horizontally fixed on a support framework and the roof steel plate possibly can not be attached to the roof steel structure due to deformation or even suffers collision or friction with the roof steel structure in the case of great gradient of the roof steel structure and consequently the forming quality and pavement efficiency of the roof are influenced. The overhead roof production system and overhead roof pavement method provided by the invention have high pavement efficiency, meet the construction requirements of a complicated roof, and can guarantee the forming quality of the produced roof steel plate in the case of great slope of the roof steel structure.
Description
Technical field
The present invention relates to the equipment that a kind of roof working is used, be specifically related to a kind of high-altitude roofing production system and high-altitude roofing laying method.
Background technology
Steel work roofing die mould metal sheet is transported to the job site then from initial factory process and is improved to tamping plant (being also referred to as the roofing board) is transported to the scene; Processing is allocated and transported to roofing with crane again on ground; This method has solved the problem with the transportation of roof panel between processing factory and job site, has saved cost of transportation greatly, but still needs the frequent large-scale crane that uses; And different according to factory building height and profiled sheet length; Employed crane model is also different, causes construction cost still high, the many and inefficiency of potential safety hazard.
In order to solve the problems of the technologies described above, Chinese patent document CN201013057Y discloses a kind of railing high-altitude presser device, comprises forming press and roll of steel plate moulding bed; Also comprise support frame; Said support frame bottom is provided with base plate, and the top is provided with top board, is provided with power transmission shaft in the base plate bottom; Said roll of steel plate moulding bed is contained on the inner base plate of framework, and said forming press is installed on the top board of frame roof.Tamping plant is inserted into roofing through steel pipe scaffold with it produces roof panel; Solved tamping plant is transported to the scene and allocates and transports to the problem of the required frequent use crane of roofing with crane in ground processing again; Reduce construction cost, reduced potential safety hazard, improved operating efficiency greatly.
But; Because the roofing steel work is considered to design certain free drainage grade from draining; And forming press of the prior art to be horizontal positioned be fixed on the support frame, that is to say that the direction and the roof drainage gradient that the production of this forming press roof panel is discharged are that irrelevancy is capable.The problem that produces therefrom: the roof panel that produce from forming press (1) its roof panel in the process of roofing steel work has distortion; Especially when the gradient of roofing steel work is very big; Roof panel possibly can not be fitted with the roofing steel work because of distortion; Even bump or rub with the roofing steel work, thereby the Forming Quality that influences roofing with lay efficient.
Summary of the invention
For this reason; Technical problem to be solved by this invention is that forming press fixed level of the prior art is placed on the support frame; Be difficult to adapt to the construction requirement of complex roof and when the gradient of roofing steel work is very big; Roof panel possibly can not be fitted with the roofing steel work because of distortion, even bumps or rub with the roofing steel work, influences the Forming Quality of roofing and lays efficient; And then provide a kind of laying efficient high, adapt to the complex roof construction requirement and the high-altitude roofing production system and the high-altitude roofing laying method of the Forming Quality of the roof panel that when the gradient of roofing steel work is very big, also can guarantee to produce.
For solving the problems of the technologies described above, a kind of high-altitude of the present invention roofing production system comprises the support frame of horizontal positioned; The roof supporting of fixed placement on said support frame; The board of fixed placement on said roof supporting; The forming machine of fixed placement in said board; With the roll of steel plate bin that is arranged on said board or the horizontal plane; It is characterized in that; Also be provided with the board base between said board and the said roof supporting; Said board base and said board hinged end are hinged; Said board free end can be provided with flexible booster between said board base and the said board around said board hinged end rotation 0～90 degree, and said flexible booster is used for promoting or the said board free end rotation that resets.
Said board free end can be 0～30 degree around the angular range of said board hinged end rotation.
Said flexible booster is arranged near said board free end one side.
Flexible booster is the hydraulically extensible power assistant arm.
Also be provided with base for supporting below the said support frame.
Said support frame is the extension type support frame, and said extension type support frame is realized rising, descend and stopping through electric-control system.
Under said base for supporting, also be provided with crawler belt, realize advancing, retreat and stopping of crawler belt through said electric-control system, said electric-control system is placed on the said base for supporting.
Said board hinged end is provided with high baffle plate, and said high baffle plate and said board base are hinged.
Be provided with the fine setting jack between said roof supporting and the said board base.
Said board base is fixed on the said roof supporting through detachable fastener.
Said board is the hollow hexahedron that steel plate output end and last end face do not have side plate.
Steel plate output end at said forming machine also is provided with the device that bends, and is used to produce arcuated roof
A kind of high-altitude roofing laying method, the laying step is following:
A. on the roofing steel work of needs laying roofing, set up the roofing roller bearing;
B. set up the high-altitude roofing production system suitable with roofing steel work low side height, the collapsing length of the flexible booster of adjustment is adjusted the board angle identical with horizontal plane angle with angle to the roofing steel work of board base;
C. open forming machine, it is high-end that the steel plate that said forming machine is produced guides to the roofing steel work through said roofing roller bearing with said steel plate;
D. shear steel plate to Len req at roofing steel work low side:
E. the steel plate under shearing in the steps d is transferred to the desired position.
The ejecting plate direction and the said roofing roller bearing of the steel plate that said forming machine is produced are tangent.
Another kind of high-altitude roofing laying method, the laying step is following:
A. on the roofing steel work of needs laying roofing, set up the roofing roller bearing;
B. set up the above-mentioned high-altitude roofing production system suitable, adjust the collapsing length of said flexible booster and adjust the angle between board and the said board base with roofing steel work low side height;
C. open forming machine, it is high-end that the steel plate that said forming machine is produced guides to the roofing steel work through said roofing roller bearing with said steel plate;
D. use the machine that bends that said roof panel is bended,, can adjust the folder degree between said board and the said board base constantly according to the radian size of the arcuated roof steel plate of producing;
E. shear steel plate to Len req at roofing steel work low side:
F. the steel plate under shearing in the steps d is transferred to the desired position.
Technique scheme of the present invention is compared prior art and is had the following advantages,
1. in the roofing production system of high-altitude according to the invention, also be provided with the board base between said board and the said roof supporting, said board base and said board hinged end are hinged; Said board free end can be provided with flexible booster between preferred said board base and the said board and near said board free end around said board hinged end rotation, and is more energy-conservation; And through flexible booster adjusting board angle, the steel plate of producing is parallel with the roofing steel work, and roof panel and roofing steel work can not bump or rub; Roof panel can not deform simultaneously; Thereby roof panel and roofing steel work are fitted, and have improved the Forming Quality and laying efficient of roofing greatly, and; Can satisfy various special-shaped roofings, like the construction of arcuated roof, heavy grade draining roofing and do not need other auxiliary equipment.
2. in the roofing production system of high-altitude according to the invention, preferred said board free end can be 0～30 degree around the angular range of said board hinged end rotation, even therefore have the staff can guarantee also that in the above personnel can be from landing on the board on the board.
3. in the roofing production system of high-altitude according to the invention, preferably flexible booster is the hydraulically extensible power assistant arm, and cost of production is low, and is easy to operate.
4. in the roofing production system of high-altitude according to the invention; Said support frame is the extension type support frame; Said extension type support frame is realized rising, descend and stopping through electric-control system, thereby can satisfy the construction needs of the steel work roofing of various height factory buildings through the height of regulating the extension type framework.
5. in the roofing production system of high-altitude according to the invention; Under said base for supporting, also be provided with crawler belt, realize advancing, retreat and stopping of crawler belt through said electric-control system, said electric-control system is placed on the said base for supporting; Thereby can very easily said high-altitude roofing production system be transported to job site nearby in same job site; And do not need the said high-altitude of dismounting again roofing production system, and then save human cost and cost of transportation, improve efficiency of construction.
6. in the roofing production system of high-altitude according to the invention, be provided with high baffle plate, can guarantee that object on the board can landing and injure the personnel of Ground Operation by a crashing object, also further guarantee the staff's on the board safety simultaneously at said board hinged end.
7. in the roofing production system of high-altitude according to the invention; Be provided with the fine setting jack between said roof supporting and the said board base; The on-the-spot condition of practice of construction possibly not reach the requirement of support frame horizontal positioned or has tricklely when out-of-level, can make board keep horizontal level through the fine setting jack.
8. in the roofing production system of high-altitude according to the invention; Said board base is fixed on the said roof supporting through detachable fastener, and promptly board and support frame are detachable, and the board part is separated transportation with frame part; And frame part can contract to minimum, is convenient to long-distance transportation.
9. in the roofing production system of high-altitude according to the invention; Also be provided with the device that bends; Be used to produce arcuated roof; Through angle adjustment between board base and the said board, just can satisfy various special-shaped roofings, like the construction of arcuated roof, heavy grade draining roofing and do not need other auxiliary equipment.
10. in the roofing production method of high-altitude according to the invention, use high-altitude according to the invention roofing production system, improved roofing greatly and laid efficient, reduced cost of production.
Description of drawings
For content of the present invention is more clearly understood, below according to a particular embodiment of the invention and combine accompanying drawing, the present invention is done further detailed explanation, wherein
Fig. 1 is a high-altitude according to the invention roofing production system sketch map at the construction field (site);
Fig. 2 is the said high-altitude roofing production system sketch map at the construction field (site) that the present invention has the extension type support frame.
Reference numeral is expressed as among the figure: the 1-board; The 2-booster that stretches; 3-board base; The detachable fastener of 4-; 5-finely tunes jack; The 6-roof supporting; The 7-support frame; The 8-electric control chamber; The 9-base for supporting; The 10-crawler belt; The 11-support column; 12-roll of steel plate bin; 13-roofing roller bearing; The 14-factory building; 15-roofing steel work; The 16-steel plate; The 17-forming machine.
The specific embodiment
Shown in Figure 1 is high-altitude according to the invention roofing production system, comprises the support frame 7 of horizontal positioned; The roof supporting 6 of fixed placement on said support frame 7; The board 1 of fixed placement on said roof supporting 6; The forming machine 17 of fixed placement in said board 1; Be arranged on ground roll of steel plate bin 12; Also be provided with board base 3 between said board 1 and the said roof supporting 6; Said board base 3 is hinged with said board hinged end; Said board free end can rotate around hinged end, is provided with flexible booster 2 between said board base 3 and the said board 1 and near said board free end.Support frame described in the present embodiment 7 is common non-retractable support frame, and said board free end can be 0～30 degree around the angular range that hinged end rotates; Flexible booster 2 is the hydraulically extensible power assistant arm; Said board 1 is a flat board.
Suppose that the roofing steel work 15 of factory building 14 and the angle of horizontal plane are 30 degree, the laying step is following:
A. on the roofing steel work 15 of needs laying roofing, set up roofing roller bearing 13;
B. set up the high-altitude roofing production system suitable with roofing steel work 15 low side height; The collapsing length of the flexible booster 2 of adjustment is adjusted the angle of board 1 and roof supporting 6, promptly adjusts the board 1 of above-mentioned high-altitude roofing production system and angle to 30 degree of board base 3;
C. open forming machine 17; It is high-end that the steel plate 16 that said forming machine 17 is produced guides to roofing steel work 15 through said roofing roller bearing 13 with said steel plate 16; Invar plate 16 is parallel with roofing steel work 15; Therefore steel plate 16 can not bump with roofing steel work 15, but extends to the roof through roofing roller bearing 13 along the roof;
D. shear steel plate 16 to Len req at roofing steel work 15 low sides;
E. the steel plate 16 under shearing among the step e is transferred to the desired position.Ejecting plate direction and said roofing roller bearing 13 that the steel plate 16 that said forming machine 17 produces is set in the present embodiment are tangent.
As disposable embodiment; The free end of board described in the present embodiment can be 0～90 degree around the angular range that hinged end rotates; Said flexible booster 2 is the pipe fitting of two screw thread sockets, through electronic or manually rotate rocking arm, said rocking arm driven gear rotation; The pipe fitting rotation that the gear driven of rotation is fixedly connected with it, thus promote to rise with the free pipe fitting of its cooperation; Correspondingly, the counter-rotating rocking arm can be realized down maneuver.
As disposable embodiment; Support frame 7 according to the invention is the extension type support frame; Shown in as shown in the figure 2, said extension type support frame is realized rising, descend and stopping through electric-control system, and it is extensible link mechanism that said extension type support frame is set in the present embodiment.
As disposable embodiment; Extension type support frame according to the invention is a fluid pressure type extension type support frame; Promptly have many hydraulic columns, be provided with four hydraulic columns in the present embodiment, the rising through the electric control system controls hydraulic column, descend or stop at roof supporting 6; The height of the electric control chamber 8 at electric-control system place is also 2 meters, and then the adjustable height adjusting range of extension type support frame is 2～20m; Said board 1 is set in the present embodiment does not have the hollow hexahedron of side plate for steel plate output end and last end face; Said roll of steel plate bin 12 is arranged on the said base for supporting 9; Can certainly open the door in board output end and last end face setting; Open said opening the door during use, close when not using, can make the not landing when transporting or quitting work of article in the board.
Further, as disposable embodiment, can said roll of steel plate bin 12 be arranged in the said board 1.
Further; Present embodiment is on the basis of the foregoing description; Also be provided with crawler belt 10 9 times at said base for supporting, realize advancing, retreat and stopping of crawler belt 10 through said electric-control system, said electric-control system is placed on the said base for supporting 9; Shown in as shown in the figure 2, wait to stop the back and be fixed on the horizontal plane through the support column under the base for supporting 9 11.
Further, present embodiment is on the basis of the foregoing description, and said board hinged end is provided with high baffle plate, and said high baffle plate and said board base 3 are hinged.
Further, present embodiment is provided with fine setting jack 5 between said roof supporting 6 and the said board base 3 on the basis of the foregoing description.
Further, present embodiment is on the basis of the foregoing description, and said board base 3 is fixed on the said roof supporting 6 through detachable fastener 4.
Further, present embodiment also is provided with the device that bends at the steel plate output end of said forming machine on the basis of the foregoing description, be used to produce arcuated roof.
During use, suppose that the roofing steel work 15 of factory building 14 is arc, the laying step is following:
A. on the roofing steel work 15 of needs laying roofing, set up roofing roller bearing 13;
B. set up the said high-altitude of the claim 12 roofing production system suitable, adjust the collapsing length of said flexible booster 2 and adjust the angle between board 1 and the said board base 3 with roofing steel work 15 low side height;
C. open forming machine 17, it is high-end that the steel plate 16 that said forming machine 17 is produced guides to roofing steel work 15 through said roofing roller bearing 13 with said steel plate 16;
D. use the machine that bends that said roof panel is bended; Radian size according to the arcuated roof steel plate of producing; Can adjust the folder degree between said board 1 and the said board base 3 constantly; Certainly, when the arc angle of arcuated roof was very little, the folder degree that also can be provided with between said board 1 and the said board base 3 was a fixing value;
E. shear steel plate 16 to Len req at roofing steel work 15 low sides:
F. the steel plate 16 under shearing in the steps d is transferred to the desired position.
Obviously, the foregoing description only be for explanation clearly done for example, and be not qualification to embodiment.For the those of ordinary skill in affiliated field, on the basis of above-mentioned explanation, can also make other multi-form variation or change.Here need not also can't give exhaustive to all embodiments.And conspicuous variation of being extended out thus or change still are among the protection domain of the invention.
Claims (15)
1. a high-altitude roofing production system comprises
The support frame of horizontal positioned (7);
The roof supporting (6) of fixed placement on said support frame (7);
The board (1) of fixed placement on said roof supporting (6);
The forming machine (17) of fixed placement in said board (1); With
Be arranged on the roll of steel plate bin (12) on said board (1) or the horizontal plane;
It is characterized in that; Also be provided with board base (3) between said board (1) and the said roof supporting (6); Said board base (3) and said board hinged end are hinged; Said board free end can be provided with flexible booster (2) between said board base (3) and the said board (1) around said board hinged end rotation 0～90 degree, and said flexible booster (2) is used for promoting or the said board free end rotation that resets.
2. according to the said high-altitude of claim 1 roofing production system, it is characterized in that said board free end can be 0～30 degree around the angular range of said board hinged end rotation.
3. according to claim 1 or 2 said high-altitude roofing production systems, it is characterized in that said flexible booster (2) is arranged near said board free end one side.
4. according to the arbitrary said high-altitude of claim 1～3 roofing production system, it is characterized in that flexible booster (2) is the hydraulically extensible power assistant arm.
5. according to the arbitrary said high-altitude of claim 1～4 roofing production system, it is characterized in that, also be provided with base for supporting (9) below the said support frame (7).
6. according to the arbitrary said high-altitude of claim 1～5 roofing production system, it is characterized in that said support frame (7) is the extension type support frame, said extension type support frame is realized rising, descend and stopping through electric-control system.
7. according to the arbitrary said high-altitude of claim 1～6 roofing production system; It is characterized in that; Under said base for supporting (9), also be provided with crawler belt (10); Realize advancing, retreat and stopping of crawler belt (10) through said electric-control system, said electric-control system is placed on the said base for supporting (9).
8. according to the arbitrary said high-altitude of claim 1～7 roofing production system, it is characterized in that said board hinged end is provided with high baffle plate, said high baffle plate and said board base (3) are hinged.
9. according to the arbitrary said high-altitude of claim 1～8 roofing production system, it is characterized in that, be provided with fine setting jack (5) between said roof supporting (6) and the said board base (3).
10. according to the arbitrary said high-altitude of claim 1～9 roofing production system, it is characterized in that said board base (3) is fixed on the said roof supporting (6) through detachable fastener (4).
11., it is characterized in that said board (1) does not have the hollow hexahedron of side plate for steel plate output end and last end face according to the arbitrary said high-altitude of claim 1～10 roofing production system.
12., it is characterized in that according to the arbitrary said high-altitude of claim 1～11 roofing production system, also be provided with the device that bends at the steel plate output end of said forming machine, be used to produce arcuated roof.
13. a high-altitude roofing laying method is characterized in that, the laying step is following:
A. on the roofing steel work (15) of needs laying roofing, set up roofing roller bearing (13);
B. set up the said high-altitude of the claim 1～11 roofing production system suitable with roofing steel work (15) low side height, the collapsing length of adjusting said flexible booster (2) is adjusted angle to roofing steel work (15) angle identical with horizontal plane angle between board (1) and the said board base (3);
C. open forming machine (17), it is high-end that the steel plate (16) that said forming machine (17) is produced guides to roofing steel work (15) through said roofing roller bearing (13) with said steel plate (16);
D. shear steel plate (16) to Len req at roofing steel work (15) low side:
E. the steel plate (16) under shearing in the steps d is transferred to the desired position.
14., it is characterized in that the ejecting plate direction and the said roofing roller bearing (13) of the steel plate (16) that said forming machine (17) is produced are tangent according to the said high-altitude of claim 13 roofing laying method.
15. a high-altitude roofing laying method is characterized in that, the laying step is following:
A. on the roofing steel work (15) of needs laying roofing, set up roofing roller bearing (13);
B. set up the said high-altitude of the claim 12 roofing production system suitable, adjust the collapsing length of said flexible booster (2) and adjust the angle between board (1) and the said board base (3) with roofing steel work (15) low side height;
C. open forming machine (17), it is high-end that the steel plate (16) that said forming machine (17) is produced guides to roofing steel work (15) through said roofing roller bearing (13) with said steel plate (16);
D. use the machine that bends that said roof panel is bended,, can adjust the folder degree between said board (1) and the said board base (3) constantly according to the radian size of the arcuated roof steel plate of producing;
E. shear steel plate (16) to Len req at roofing steel work (15) low side:
F. the steel plate (16) under shearing in the steps d is transferred to the desired position.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101516530A CN102653970A (en) | 2012-05-16 | 2012-05-16 | Overhead roof production system and overhead roof pavement method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101516530A CN102653970A (en) | 2012-05-16 | 2012-05-16 | Overhead roof production system and overhead roof pavement method |
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| CN102653970A true CN102653970A (en) | 2012-09-05 |
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| CN2012101516530A Pending CN102653970A (en) | 2012-05-16 | 2012-05-16 | Overhead roof production system and overhead roof pavement method |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102864879A (en) * | 2012-10-15 | 2013-01-09 | 中国二冶集团有限公司 | Elevated-platform plate pressing device |
| CN103790294A (en) * | 2012-10-29 | 2014-05-14 | 五冶集团上海有限公司 | Compression metal roofing board high altitude horizontal transportation device and method |
| CN105442772A (en) * | 2015-12-31 | 2016-03-30 | 沈阳三新实业有限公司 | Super-long color steel roof board construction process and tool |
| CN106345927A (en) * | 2016-08-26 | 2017-01-25 | 陕西建工机械施工集团有限公司 | Roll-profiled metal sheet trans-outer one-step forming construction method |
| CN109109871A (en) * | 2018-07-26 | 2019-01-01 | 中国华冶科工集团有限公司 | Steel structural roof colored steel transportation resources |
| JP2021134566A (en) * | 2020-02-27 | 2021-09-13 | 株式会社大林組 | Machine working platform and roof construction method |
| JP2021134541A (en) * | 2020-02-26 | 2021-09-13 | 株式会社大林組 | Roof construction system and roof construction method |
| NL1043853A (en) * | 2020-03-09 | 2021-10-22 | Visser Hoogeloon B V | Method and device for dismantling roofing sheets |
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| CN2522509Y (en) * | 2001-12-12 | 2002-11-27 | 华胤(厦门)钢业有限公司 | Roof covering metal plate mounting apparatus |
| CN201013057Y (en) * | 2006-12-29 | 2008-01-30 | 中国第二十冶金建设公司 | Rail-engaging type high altitude board-pressing device |
| CN202559617U (en) * | 2012-05-16 | 2012-11-28 | 森特士兴集团股份有限公司 | High-altitude roof production system |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102864879A (en) * | 2012-10-15 | 2013-01-09 | 中国二冶集团有限公司 | Elevated-platform plate pressing device |
| CN103790294A (en) * | 2012-10-29 | 2014-05-14 | 五冶集团上海有限公司 | Compression metal roofing board high altitude horizontal transportation device and method |
| CN103790294B (en) * | 2012-10-29 | 2015-11-25 | 五冶集团上海有限公司 | Profiling metal roofing board style of calligraphy overhead horizontal conveying arrangement and method |
| CN105442772A (en) * | 2015-12-31 | 2016-03-30 | 沈阳三新实业有限公司 | Super-long color steel roof board construction process and tool |
| CN106345927A (en) * | 2016-08-26 | 2017-01-25 | 陕西建工机械施工集团有限公司 | Roll-profiled metal sheet trans-outer one-step forming construction method |
| CN106345927B (en) * | 2016-08-26 | 2019-04-05 | 陕西建工机械施工集团有限公司 | Roofing metal pressing plate is across outer one-pass molding construction method |
| CN109109871A (en) * | 2018-07-26 | 2019-01-01 | 中国华冶科工集团有限公司 | Steel structural roof colored steel transportation resources |
| JP2021134541A (en) * | 2020-02-26 | 2021-09-13 | 株式会社大林組 | Roof construction system and roof construction method |
| JP7380322B2 (en) | 2020-02-26 | 2023-11-15 | 株式会社大林組 | Roof construction system and roof construction method |
| JP2021134566A (en) * | 2020-02-27 | 2021-09-13 | 株式会社大林組 | Machine working platform and roof construction method |
| JP7435025B2 (en) | 2020-02-27 | 2024-02-21 | 株式会社大林組 | Mechanical gantry and roof construction method |
| NL1043853A (en) * | 2020-03-09 | 2021-10-22 | Visser Hoogeloon B V | Method and device for dismantling roofing sheets |
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Address after: 100176 Daxing District economic and Technological Development Zone, BDA international enterprise Avenue, No. 20, No. Applicant after: Center INT Group Co., Ltd. Address before: 100176 Daxing District economic and Technological Development Zone, BDA international enterprise Avenue, No. 20, No. Applicant before: Beijing Shixing Steel Structure Co., Ltd. |
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Free format text: CORRECT: APPLICANT; FROM: BEIJING SHIXING STEEL STRUCTURE CO., LTD. TO: CENTER INT GROUP CO., LTD. |
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Application publication date: 20120905 |