CN102277980B - Device for integrally jacking roof of single-layer industrial factory building and construction method thereof - Google Patents
Device for integrally jacking roof of single-layer industrial factory building and construction method thereof Download PDFInfo
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- CN102277980B CN102277980B CN 201110116736 CN201110116736A CN102277980B CN 102277980 B CN102277980 B CN 102277980B CN 201110116736 CN201110116736 CN 201110116736 CN 201110116736 A CN201110116736 A CN 201110116736A CN 102277980 B CN102277980 B CN 102277980B
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Abstract
The invention relates to a device for integrally jacking a roof of a single-layer industrial factory building. The device is characterized by comprising three parts, namely a jacking device, a vertical force transfer device and a synchronous control device, wherein the vertical force transfer device is arranged on the ground of the factory building; and the jacking device is fixed above the vertical force transfer device and is connected with the synchronous control system. The construction method comprises the following steps of: enabling an upper section of an adjustable steel support column to be positioned in a freely-retractable state; fixing an inverted T-shaped counterforce cross beam, starting the synchronous control system and jacking a conventional shot-travel hydraulic jack to one travel height; fixing the upper section of the adjustable steel support column to enable the inverted T-shaped counterforce cross beam to be positioned in a freely-retractable state, starting the synchronous control system, retracting the jack and upwards hoisting the inverted T-shaped counterforce cross beam to be a travel height; and repeating the step (1) and the step (2) until an original roof frame beam is jacked to the designed elevation and realizing integral jacking of the roof of the single-layer industrial factory building. In the jacking process, an inserting pin of the adjustable steel column and an inserting pin at the end part of the counterforce cross beam are extracted out or inserted into conveniently and quickly by just arranging constructors according to the sequence of jacking cycle.
Description
Technical field
The present invention relates to a kind of device and job practices thereof of single storey industry workshop integral jacking roof, specifically relate to the conventional short-stroke hydraulic jack of a kind of employing and adjustable steel prop, in conjunction with synchronous control technique, in the situation of not destroying the single storey industry workshop roof system, realize the devices and methods therefor of roof structure integral jacking.Belong to the engineering construction technology field.
Background technology
Along with the development of China's economic construction and the rapid rise of large scale industry project, some build the demand that age single storey industry workshop inner space early can not have been satisfied modern crafts or production, but remove to rebuild and not only can take the long production time, and can bring economically overlapping investment, cause the significant wastage of resource.Therefore, most manufacturing enterprises often select to adopt the method that improves the roof absolute altitude to promote the function of factory building after carrying out many-sided analysis-by-synthesis such as construction period, economic input.
When carrying out the absolute altitude raising of factory building roof, the method that can adopt partial dismantling to rebuild, be about to the dismounting of Roof system complete removal or subdivision, after the reinforced concrete post of supporting Roof system or steel column carried out strengthening reconstruction, again make Roof or subdivision and lift again splicing behind original roof system.This method is in the unaltered situation of the original post distance of factory building, the duplication of labour and the wasting of resources that has caused roof system to make dismantled in original roof system dismounting or subdivision, and need to take long production time and larger area construction plant, implement also uneconomical, convenient.In addition, also there is the method for improving of employing to realize that the roof absolute altitude improves, namely at reinforced concrete post or steel column top hoist point is set, adopt lifting means synchronously roof system to be promoted to design elevation, but hoist point is set after the method need punch to original roof system part and promotes pylon, and the method has relatively high expectations to the anchor Design that promotes pylon, easily former post produced local damage in the work progress, and is unfavorable to transforming rear structure.
Name is called the application for a patent for invention of the method for integral jacking roof of reinforced concrete pile single storey industry workshop, a kind of method of integral jacking roof of reinforced concrete pile single storey industry workshop is disclosed, it fixes two Reinforced Concrete Corbels in two sides, top of every reinforced concrete pile of reinforced concrete pile single storey industry workshop, end face at each bracket is placed a jack, in the lower edge end of roof truss a girder steel that is bearing on the jack is set, then start synchronously jack, and filling up cushion block between the end face of every reinforced concrete pile and the roof truss termination after the jacking, so circulation can jacking be arrived desired height.The method can be destroyed original roof system in work progress, but need to newly build in original concrete column side two Reinforced Concrete Corbels, and difficulty of construction is large, construction period is longer.Simultaneously, the method is to need a large amount of hydraulic jack and shelve cushion block in the jacking process.
Name is called the application for a patent for invention of integrated raising method for self-supporting house roof and device thereof, a kind of integrated raising method for self-supporting house roof and device thereof are disclosed, it is fixedly connected with lifting pin first with the column top in former house, and base is fixed on the bottom of column, jack is placed on the base, lifting-up support is connected on the lifting pin, then the house column is cut off, arrive required height by jack circulation jacking house roof, lifting pin is fixedly connected on the hypomere column of column, makes lifting pin and column be connected to new support post after an integral body raises as house roof.The method is not destroyed original roof system equally, but the method has been destroyed the globality of roof system bearing post, and lifting pin was difficult after jacking was finished combines together with the original structure post, simultaneously, the method safety of structure in the jacking process is relatively poor, and needs a large amount of hydraulic jacking equipment, operating expenses higher.
Summary of the invention
Technical problem:For overcoming in the above-mentioned single storey industry workshop roof system jacking process shortcomings such as destructive large, the serious waste of resources of original structure post, construction cost height, work progress poor stability, the invention provides a kind of device and implementation method thereof of single storey industry workshop integral jacking roof, the present invention does not destroy the original structure post, save the usage quantity of hydraulic jack in the jacking process, increase the turnover access times of lift-up device, reducing construction cost and technical difficulty improve the safety in the jacking process.
Technical scheme:
A kind of single storey industry workshop integral jacking roof device, it is characterized in that being formed by lift-up device, vertical load transfer device and synchronous control system three parts, vertical load transfer device places facility floor, lift-up device is placed on the top of vertical load transfer device and fixes, and lift-up device is connected with synchronous control system;
Described lift-up device, comprise on jack, the adjustable steel prop sections and inverted T-shaped counter-force crossbeam under sections, the adjustable steel prop, wherein on the adjustable steel prop under sections, the adjustable steel prop sections level be oppositely arranged and the mat connecting elements is flexibly connected, the upper end of sections and inverted T-shaped counter-force crossbeam is oppositely arranged and the flexible connection of mat connecting elements under the adjustable steel prop, the bottom of sections is fixed with the top of vertical load transfer device under the adjustable steel prop, and sections and inverted T-shaped counter-force crossbeam bottom is fixing under the adjustable steel prop.
Aforesaid single storey industry workshop integral jacking roof device, it is characterized in that the vertical rod between the sections arranges pin hole vertically under sections on the adjustable steel prop, the adjustable steel prop, then the upper and lower sections of adjustable steel prop is flexibly connected the mode of inserting latch after the alignment of the pin hole in the vertical rod by being socketed first vertical rod; Inverted T-shaped counter-force beam-end arranges pin hole, and the vertical rod of sections is flexibly connected by the mode of rear insertion latch that pin hole is alignd under inverted T-shaped counter-force beam-end and the adjustable steel prop.
Aforesaid single storey industry workshop integral jacking roof device, it is characterized in that the pitch-row of pin hole of the vertical rod of the upper and lower sections of adjustable steel prop equals a stroke of conventional short-stroke hydraulic jack, the quantity of pin hole intends the height of jacking according to the single storey industry workshop roof system and the stroke of conventional short-stroke hydraulic jack is determined.
Aforesaid single storey industry workshop integral jacking roof device is characterized in that the pin hole of inverted T-shaped counter-force beam-end and pin hole center superposition, the equal and opposite in direction of the upper and lower sections vertical rod of adjustable steel prop.
A kind of job practices of single storey industry workshop integral jacking roof is characterized in that concrete steps are as follows:
(1), removes on the adjustable steel prop under the sections and adjustable steel prop the connecting elements between the sections and make that sections is in the free-extension state on the adjustable steel prop, fixedly sections and inverted T-shaped counter-force crossbeam under the adjustable steel prop;
(2), start synchronous control system, conventional short-stroke hydraulic jack is supported on the inverted T-shaped counter-force crossbeam, the height of a stroke of the conventional short-stroke hydraulic jack of sections and former roof truss beam on the jacking adjustable steel prop;
(3), the connecting elements between the sections under the sections and adjustable steel prop is installed on the adjustable steel prop, sections under sections on the adjustable steel prop and the adjustable steel prop is connected into integral body, the connecting elements of the upper end of sections and inverted T-shaped counter-force crossbeam makes inverted T-shaped counter-force crossbeam be in the free-extension state under the removal adjustable steel prop, sections promotes stroke height of inverted T-shaped counter-force crossbeam as supporting arrangement on the adjustable steel prop;
(4) repeating step (2), (3) are until former roof truss beam jacking is finished the integral jacking of single storey industry workshop roof system to design elevation.
The job practices of aforesaid single storey industry workshop integral jacking roof is characterized in that also being provided with lateral support (2).
Beneficial effect:The present invention is according to the form of structure of roof system and roof load, and the Jacking point position of single storey industry workshop integral jacking roof is set, and carries out the making of lift-up device and vertical load transfer device.Then according to assemble method provided by the invention, carry out the jack-up system spelling.After assembly unit is finished, conventional short-stroke hydraulic jack is linked to each other with synchronous control system, try jacking.After by the examination jacking lift-up device, vertical load transfer device and synchronous control system being tested, with the steel integral jacking roof to design elevation.
Single storey industry workshop integral jacking roof apparatus and method provided by the invention can not produce roof system and destroy, and namely do not need the roof is made or assembly unit again, have shortened the construction period of factory building function modifications, can realize the maximization of economic benefit.Simultaneously, lift-up device does not all link to each other with the original structure post with vertical load transfer device, has not only guaranteed the safety in the integral jacking roof process, and does not affect the strengthening reconstruction construction of original structure post.In addition, lift-up device provided by the invention only needs the conventional short-stroke hydraulic jack of separate unit, can save one times conventional short-stroke hydraulic jack quantity than existing raising method, namely save equipment handover charge, reduce again the difficulty of Synchronization Control in the jacking process.In addition, for the function modifications of many buildings single storey industry workshop, lift-up device provided by the invention etc. can repeatedly have enough to meet the need use and be applicable to reinforced concrete post and two kinds of structure typess of steel column, can greatly reduce the working measure expense.
Description of drawings
Fig. 1 a is that jack-up system of the present invention is assembled positive elevational schematic view;
Fig. 1 b is jack-up system assembling side elevation schematic diagram of the present invention;
Fig. 2 a is jack-up system jacking roof system operating principle schematic diagram of the present invention;
Fig. 2 b is jack-up system jack oil return operating principle schematic diagram of the present invention;
Fig. 3 is lift-up device stereogram of the present invention.
Main mark in the accompanying drawing is described as follows: sections connecting bolt 15 under sections connecting bolt 13, inverted T-shaped counter-force crossbeam connecting bolt 14, the adjustable steel prop on sections 6 under sections 3, conventional short-stroke hydraulic jack 4, inverted T-shaped counter-force crossbeam 5, the adjustable steel prop, vertical load transfer device 7, synchronous control system 8, original structure post 9, adjustable steel prop latch 10, counter-force beam-end latch 11, pin hole 12, the adjustable steel prop on former roof truss beam 1, lateral support 2, the adjustable steel prop.
The specific embodiment
The present invention is described in more detail below in conjunction with drawings and Examples:
Fig. 1 a is that jack-up system of the present invention is assembled positive elevational schematic view, Fig. 1 b is jack-up system assembling side elevation schematic diagram of the present invention, Fig. 2 a is jack-up system jacking roof system operating principle schematic diagram of the present invention, Fig. 2 b is jack-up system jack oil return operating principle schematic diagram of the present invention, and Fig. 3 is lift-up device stereogram of the present invention.
Shown in 3, a kind of single storey industry workshop integral jacking roof device, formed by lift-up device, vertical load transfer device 7 and synchronous control system three parts, lift-up device is the dynamical system of integral jacking roof system, be positioned at former roof truss beam 1 bottom, be supported on vertical load transfer device 7 tops and fix with bolt, with original structure post 9 without being connected.Be applicable to the original structure post of the unlike materials such as reinforced concrete post and steel column, can be in the situation of not destroying former roof system, realize the integral jacking of single storey industry workshop roof system, and both can guarantee the safety of jacking in the jacking process, do not affect again the strengthening reconstruction construction of original structure post.Lift-up device comprises: sections 6 and inverted T-shaped counter-force crossbeam 5 under sections 3, the adjustable steel prop on conventional short-stroke hydraulic jack 4, the adjustable steel prop, sections 3 supports former roof truss beam 1 and lateral support 2 on the adjustable steel prop, sections 6 is fixed with the top of vertical load transfer device 7 under the adjustable steel prop, and conventional short-stroke hydraulic jack 4 and inverted T-shaped counter-force crossbeam 5 are installed between the sections 6 under sections 3 and the adjustable steel prop on the adjustable steel prop.Synchronous control system 8 is that the Synchronization Control terminal of multiple spot jacking is connected with conventional short-stroke hydraulic jack 4, controls the conventional short-stroke hydraulic jack synchronous working of each Jacking point.The two ends of conventional short-stroke hydraulic jack 4 respectively with adjustable steel prop on sections 3 link to each other with inverted T-shaped counter-force crossbeam 5, the height of lift-up device and vertical load transfer device is according to actual roof system load and top lifting height making.
Wherein, on the adjustable steel prop under sections 3 and the adjustable steel prop four vertical vertical rods between the sections 6 to be that collapsible type is adjustable be connected, along vertical rod pin hole 12 is set axially, the pitch-row of adjacent pin hole 12 equals a stroke of conventional short-stroke hydraulic jack, the quantity of pin hole then intends the height of jacking according to the single storey industry workshop roof system and the stroke of conventional short-stroke hydraulic jack is determined, on the adjustable steel prop under sections 3 and the adjustable steel prop sections 6 fix by the mode of rear insertion latch 10 that pin hole is alignd.Inverted T-shaped counter-force crossbeam 5 ends arrange pin hole, the pin hole 12 of four of sections vertical vertical rods is equal under the size of this pin hole and the adjustable steel prop, inverted T-shaped counter-force crossbeam by latch 11 being inserted pin holes mode and adjustable steel prop under four vertical vertical rods of sections fix.
The assembling process of above single storey industry workshop integral jacking roof device is:
(1), designs and produces sections 6 and vertical load transfer device 7 under sections 3 on the adjustable steel prop, inverted T-shaped counter-force crossbeam 5, the adjustable steel prop according to roof system top lifting height, jacking load.
(2), select conventional short-stroke hydraulic jack 4, adjustable steel prop latch 10 and counter-force beam-end latch 11 according to roof system jacking load and top lifting height, and position and the aperture of pin hole 12 on the sections 6 be set under sections 3 on the adjustable steel prop, inverted T-shaped counter-force crossbeam and the adjustable steel prop accordingly.
(3), arrange according to Jacking point, vertical load transfer device 7 is installed on the ground of single storey industry workshop.
(4), sections 6 under sections 3, adjustable steel prop on the spelling adjustable steel prop on the ground of single storey industry workshop, and after by the mode of adjustable steel prop latch 10 being inserted pin hole 12 that both are fixing, its top that is mounted to vertical load transfer device 7 is also fixing.
(5), inverted T-shaped counter-force crossbeam 5 and conventional short-stroke hydraulic jack 4 be installed, and with its with adjustable steel prop on sections 3 are connected with inverted T-shaped counter-force crossbeam and reliably are connected.Conventional short-stroke hydraulic jack 4 is connected with synchronous control system 8, extracts adjustable steel prop latch 10, behind the insertion inverted T-shaped counter-force beam-end latch 11, carry out the examination jacking of integral roof.The examination jacking finish and the jack-up system security inspection complete after, the formal construction of preparing the single storey industry workshop integral jacking roof.Sections 6 under sections 3, inverted T-shaped counter-force crossbeam 5, the adjustable steel prop, vertical load transfer device 7 are speed and connect splicing structure on the adjustable steel prop, have reduced the weight of single member, reduce equipment making and transhipment difficulty.
A kind of job practices of single storey industry workshop integral jacking roof, concrete steps are as follows:
(1), extract first adjustable steel prop latch 10 and make on the adjustable steel prop under the sections 3 and adjustable steel prop between the sections 6 only pivot bush unit, make that sections is in the free-extension state on the adjustable steel prop, insert counter-force beam-end latch 11 sections under the adjustable steel prop and inverted T-shaped counter-force crossbeam are connected into integral body, supporting arrangement as conventional short-stroke hydraulic jack 4, start synchronous control system 8, conventional short-stroke hydraulic jack 4 is supported on the inverted T-shaped counter-force crossbeam 5 stroke height of sections 3 and 1 one conventional short-stroke hydraulic jack of former roof truss beam on the jacking adjustable steel prop.
(2), insert adjustable steel prop latch 10, sections under sections on the adjustable steel prop and the adjustable steel prop is connected into integral body, extract inverted T-shaped counter-force beam-end latch, make inverted T-shaped counter-force crossbeam and adjustable steel prop next stage pivot bush unit only, sections 3 promotes stroke height of inverted T-shaped counter-force crossbeam as supporting arrangement on the adjustable steel prop.
(3) repeating step (1), (2) are until former roof truss beam jacking is finished the integral jacking of single storey industry workshop roof system to design elevation.
The present invention also is provided with lateral support (2), to guarantee the lateral stability of former roof truss beam (1) in the jacking process.
The present invention realizes the integral jacking of single storey industry workshop roof system, only need arrange the constructor according to the order of jacking circulation in the jacking process, extracts or insert adjustable steel prop latch and counter-force beam-end latch.
Claims (7)
1. single storey industry workshop integral jacking roof device, it is characterized in that being formed by lift-up device, vertical load transfer device and synchronous control system three parts, vertical load transfer device places facility floor, lift-up device is placed on the top of vertical load transfer device and fixes, and lift-up device is connected with synchronous control system;
Described lift-up device, comprise jack, sections on the adjustable steel prop, sections and inverted T-shaped counter-force crossbeam under the adjustable steel prop, sections on the adjustable steel prop wherein, the sections level is oppositely arranged and the flexible connection of mat connecting elements under the adjustable steel prop, the end of sections and inverted T-shaped counter-force crossbeam is oppositely arranged and the flexible connection of mat connecting elements under the adjustable steel prop, the bottom of sections is fixed with the top of vertical load transfer device under the adjustable steel prop, sections and inverted T-shaped counter-force beam-end can be fixed under the adjustable steel prop, the two ends of jack respectively with adjustable steel prop on sections link to each other with inverted T-shaped counter-force crossbeam.
2. single storey industry workshop integral jacking roof device according to claim 1, it is characterized in that the vertical rod between the sections arranges pin hole vertically under sections on the adjustable steel prop, the adjustable steel prop, then the upper and lower sections of adjustable steel prop is flexibly connected the mode of inserting latch after the alignment of the pin hole in the vertical rod by being socketed first vertical rod; Inverted T-shaped counter-force beam-end arranges pin hole, and the vertical rod of sections is flexibly connected by the mode of rear insertion latch that pin hole is alignd under inverted T-shaped counter-force beam-end and the adjustable steel prop.
3. single storey industry workshop integral jacking roof device according to claim 2, it is characterized in that the pitch-row of pin hole of the vertical rod of the upper and lower sections of adjustable steel prop equals a stroke of conventional short-stroke hydraulic jack, the quantity of pin hole intends the height of jacking according to the single storey industry workshop roof system and the stroke of conventional short-stroke hydraulic jack is determined.
4. single storey industry workshop integral jacking roof device according to claim 2 is characterized in that the pin hole of inverted T-shaped counter-force beam-end and pin hole center superposition, the equal and opposite in direction of the upper and lower sections vertical rod of adjustable steel prop.
5. job practices based on single storey industry workshop integral jacking roof claimed in claim 1 is characterized in that concrete steps are as follows:
(1), removes on the adjustable steel prop under the sections and adjustable steel prop the connecting elements between the sections and make that sections is in the free-extension state on the adjustable steel prop, fixedly sections and inverted T-shaped counter-force crossbeam under the adjustable steel prop;
(2), start synchronous control system, conventional short-stroke hydraulic jack is supported on the inverted T-shaped counter-force crossbeam, the height of a stroke of the conventional short-stroke hydraulic jack of sections and former roof truss beam on the jacking adjustable steel prop;
(3), the connecting elements between the sections under the sections and adjustable steel prop is installed on the adjustable steel prop, sections under sections on the adjustable steel prop and the adjustable steel prop is connected into integral body, the connecting elements of the end of sections and inverted T-shaped counter-force crossbeam makes inverted T-shaped counter-force crossbeam be in the free-extension state under the removal adjustable steel prop, sections promotes stroke height of inverted T-shaped counter-force crossbeam as supporting arrangement on the adjustable steel prop;
(4) repeating step (1), (2), (3) are until former roof truss beam jacking is finished the integral jacking of single storey industry workshop roof system to design elevation.
6. job practices according to claim 5 is characterized in that also being provided with lateral support (2).
7. job practices according to claim 5, it is characterized in that the vertical rod between the sections arranges pin hole vertically under sections on the adjustable steel prop, the adjustable steel prop, then the upper and lower sections of adjustable steel prop is flexibly connected the mode of inserting latch after the alignment of the pin hole in the vertical rod by being socketed first vertical rod; Inverted T-shaped counter-force beam-end arranges pin hole, and the vertical rod of sections is flexibly connected by the mode of rear insertion latch that pin hole is alignd under inverted T-shaped counter-force beam-end and the adjustable steel prop.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110116736 CN102277980B (en) | 2011-05-06 | 2011-05-06 | Device for integrally jacking roof of single-layer industrial factory building and construction method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110116736 CN102277980B (en) | 2011-05-06 | 2011-05-06 | Device for integrally jacking roof of single-layer industrial factory building and construction method thereof |
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| Publication Number | Publication Date |
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| CN102277980A CN102277980A (en) | 2011-12-14 |
| CN102277980B true CN102277980B (en) | 2013-01-02 |
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| CN 201110116736 Expired - Fee Related CN102277980B (en) | 2011-05-06 | 2011-05-06 | Device for integrally jacking roof of single-layer industrial factory building and construction method thereof |
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Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103669576A (en) * | 2013-11-18 | 2014-03-26 | 中色十二冶金建设有限公司 | Integral jacking construction device and method for steel structure workshop |
| CN104652839B (en) * | 2015-01-30 | 2017-01-25 | 中国矿业大学 | Method for reducing height of reinforced concrete frame structure |
| CN105672482B (en) * | 2016-01-29 | 2017-12-08 | 浙江鑫直建筑有限公司 | A kind of large span ancient building roofing repairs jacking apparatus and construction method |
| CN106836281A (en) * | 2017-02-21 | 2017-06-13 | 安徽省高迪环保股份有限公司 | A kind of precast concrete segment height adjustment mechanism and regulation construction method |
| CN112081248B (en) * | 2020-08-03 | 2021-11-12 | 上海建工一建集团有限公司 | Roof integral lifting system and roof integral lifting method |
| CN112081249B (en) * | 2020-08-03 | 2021-11-12 | 上海建工一建集团有限公司 | Roof integral jacking system and roof integral jacking method |
| CN112081250B (en) * | 2020-08-03 | 2021-11-12 | 上海建工一建集团有限公司 | House integral lifting system and house integral lifting method |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4980999A (en) * | 1988-07-27 | 1991-01-01 | Terenzoni Robert S | System for raising a roof |
| JPH1037314A (en) * | 1996-07-18 | 1998-02-10 | Susumu Nakatani | Building and construction method therefor |
| CN1190578C (en) * | 2001-04-30 | 2005-02-23 | 贵阳铝镁设计研究院 | Integrated raising method for self-supporting house roof and its equipment |
| CN1159505C (en) * | 2002-03-26 | 2004-07-28 | 中国铝业股份有限公司 | Method for integral jacking roof of reinforced concrete pile single storey industry workshop |
| WO2007068064A1 (en) * | 2005-12-16 | 2007-06-21 | Gregory John Black | Improved construction system, method and apparatus |
| CN1884772A (en) * | 2006-07-11 | 2006-12-27 | 樊建民 | Hydraulic lifting roof support assembling method |
| CN101476397B (en) * | 2009-01-15 | 2010-09-29 | 二十三冶建设集团有限公司 | Integral jacking method for steel roof frame and concrete column articulated factory house cover |
| CN101922243B (en) * | 2009-06-12 | 2013-04-03 | 班云 | Inner jacking method and equipment for demolishing buildings |
| CN101845882B (en) * | 2010-05-15 | 2013-06-12 | 陈永生 | Combined device of a mould frame for hanging and casting cement for high-rise buildings and handling and hanging box for building materials |
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2011
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