CN103771292B - A kind of method carried out from climbing type constructing device from climbing type construction - Google Patents
A kind of method carried out from climbing type constructing device from climbing type construction Download PDFInfo
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- CN103771292B CN103771292B CN201410065941.3A CN201410065941A CN103771292B CN 103771292 B CN103771292 B CN 103771292B CN 201410065941 A CN201410065941 A CN 201410065941A CN 103771292 B CN103771292 B CN 103771292B
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Abstract
The present invention relates to building engineering field, a kind of method carried out from climbing type construction from climbing type constructing device.Being made up of centre-hole jack, after propeller, front locker and front anchor restorer from climbing type jack, described front anchor restorer includes front anchor restorer cover plate and front anchor restorer regulation fuse.The method carried out from climbing type constructing device from climbing type construction of the present invention, by improving from climbing type jack, it is possible to achieve the steel strand wires of clamping all size, and operates simpler, and every steel strand wires stress operationally is evenly；Meanwhile, it is capable to reduce cost significantly, have that lightweight, simple structure, constructing operation are convenient, be easily installed and the advantage such as dismounting；Further, it is possible to the stress realizing centre-hole jack and steel strand wires unloads automatically, drastically increase working security.
Description
Technical field
The present invention relates to building engineering field, a kind of utilize this from climbing type constructing device carry out from climbing type construction method.
Background technology
In the construction of large-scale flexible cable net structure, generally use the method that radial cable is promoted.And the method promoted the most typically has two kinds: one is to be placed around lifting jack at ring beam promoting；One is to be placed on jack at elevated rope head to climb.In practice of construction, by commonly used be latter method for improving.But latter method for improving is when climbing, the Impact direction of drag-line is not vertical but tilts, for common 100T promotes top, the most about 1.2m, weight about 800kg, owing to weight and volume is big, easily cause the axis direction of the Impact direction of jack and elevated rope the most point-blank, common lifting jack can only clamp Φ 15.2 steel strand wires, in order to realize bigger lifting force, being usually a jack and clamp many Φ 15.2 steel strand wires, easily there is the phenomenon of discontinuity in each steel strand wires.
In prior art, ordinary jack is after lifting is in place, and jack stress can not unload automatically, mostly uses the method for cutting of steel twisted wire by force to make lifting jack unloading, thus there is bigger potential safety hazard.
Summary of the invention
The technical problem to be solved be can only realize big lifting force by many steel strand wires of clamping for jack of the prior art, easily there is the shortcoming such as discontinuity phenomenon and unloading difficulty in many steel strand wires, it is provided that a kind of utilize this to carry out the method from climbing type construction from climbing type constructing device.
The present invention solves its technical problem and is adopted the technical scheme that: a kind of from climbing type jack, it is characterized in that: be made up of centre-hole jack, after propeller, front locker and front anchor restorer, described after propeller is arranged on bottom described centre-hole jack, described front locker is arranged on described centre-hole jack top, and described front anchor restorer is arranged on above described front locker；Described after propeller includes after propeller gland, after propeller spring, after propeller intermediate plate, after propeller intermediate plate pressure ring and after propeller anchor cup, after propeller anchor cup and centre-hole jack go out that cylinder end is fixing to be connected, after propeller intermediate plate is inserted in after propeller anchor cup, the thick end of after propeller intermediate plate is down, after propeller intermediate plate pressure ring heads on the thick end of after propeller intermediate plate, after propeller spring housing is at the outer surface of after propeller intermediate plate pressure ring, and after propeller spring is between after propeller gland and after propeller intermediate plate pressure ring；Described front locker includes that front locker anchor cup, front locker fix bolt, front locker intermediate plate, front locker intermediate plate pressure ring and front locker spring, the top being bolted to centre-hole jack fixed by front locker anchor cup by front locker, front locker intermediate plate is inserted in front locker anchor cup, the thick end of front locker intermediate plate is down, front locker intermediate plate pressure ring heads on the thick end of front locker intermediate plate, front locker spring housing is at the outer surface of front locker intermediate plate pressure ring, and front locker spring is between the top of centre-hole jack and front locker intermediate plate pressure ring；Described front anchor restorer includes front anchor restorer cover plate and front anchor restorer regulation fuse, and front anchor restorer cover plate is fixing with front locker anchor cup to be connected, and front anchor restorer regulation fuse is between front anchor restorer cover plate and front locker anchor cup.
Simultaneously, the present invention also provides for a kind of from climbing type constructing device, for radial cable being promoted in the construction of large-scale flexible cable net structure, it is characterized in that: it includes rotatably pitching ear, steel strand wires, heavy frame and at least two from climbing type jack, each two from climbing type jack symmetry through the two ends of heavy frame, two steel strand wires are through being connected with two rotatable fork ears respectively from climbing type jack and heavy frame, described rotatable fork ear is U-shaped structure, jaw position symmetric clamp is at the two ends of steel construction otic placode and hinged with steel construction otic placode by bearing pin.
Further, described 4 or 6 are included from climbing type jack from climbing type constructing device.
Further, a diameter of 15.2mm, 21.8mm or 28.6mm of described steel strand wires.
It addition, the present invention also provide for a kind of utilize above-mentioned from climbing type constructing device carry out from climbing type construction method, including construction time use steel construction otic placode and drag-line, it is characterised in that: the method comprises the following steps,
Step 1: select the specification of steel strand wires and the specification from climbing type jack according to actual needs；
Step 2: will rotatably pitch ear and steel strand wires symmetry is fixed on steel construction otic placode with bearing pin；
Step 3: heavy frame is arranged on the lower end of drag-line, and by the lower end of steel strand wires through heavy frame；
Step 4: will be installed on heavy frame from climbing type jack, and steel strand wires are installed in climbing type jack；
Step 5: start centre-hole jack, centre-hole jack goes out cylinder, after propeller locking steel strand wires, and front locker intermediate plate is opened, and promotes heavy frame and drag-line to climb along steel strand wires from climbing type jack；
Step 6: centre-hole jack starts back cylinder after going out cylinder 150mm, after returning cylinder 2mm, front locker intermediate plate shrinks, and locks steel strand wires；
Step 7: after continuing back cylinder 2mm, after propeller spring-compressed, after propeller intermediate plate is opened；
Step 8: after continuing back cylinder 146mm, centre-hole jack the most upwards climbs with after propeller, completes a climb operation；
Step 9: repeat step 5～8, it is achieved climb continuously.
Further, steel strand wires are installed to by step 4 comprise the following steps in climbing type jack,
Step 41: open front anchor restorer regulation fuse and make front locker intermediate plate loosen, and open after propeller gland, loosen after propeller spring and make after propeller intermediate plate loosen；
Step 42: by steel strand wires through from the various piece of climbing type jack；
Step 43: fixing after propeller gland makes after propeller spring compression after propeller intermediate plate, turns off front anchor restorer regulation fuse, i.e. completes to install.
Further, drag-line rope head apart from distance in place at 50mm～100mm time, centre-hole jack go out for the last time cylinder operation.
Further, before centre-hole jack goes out cylinder operation for the last time, open front anchor restorer regulation fuse and make front locker intermediate plate loosen.
Further, before drag-line is installed and put in place, centre-hole jack keeps going out cylinder operation for the last time.
Further, after drag-line is installed and put in place, centre-hole jack returns cylinder, and after propeller intermediate plate is in locking state, departs from heavy frame from climbing type jack, and steel strand wires unload.
Due to the fact that and take technique scheme, it has the advantages that
Of the present invention from climbing type jack and from climbing type constructing device and construction method, by improving from climbing type jack, can realize clamping the steel strand wires of all size, and operate simpler, every steel strand wires stress operationally is evenly；Meanwhile, it is capable to reduce cost significantly, have that lightweight, simple structure, constructing operation are convenient, be easily installed and the advantage such as dismounting；Further, it is possible to the stress realizing centre-hole jack and steel strand wires unloads automatically, drastically increase working security.
Accompanying drawing explanation
Fig. 1 is the overall structure schematic diagram from climbing type constructing device of the present invention；
Fig. 2 is the schematic diagram after the assembling of climbing type jack of the present invention；
Fig. 3 is the schematic diagram of the composition in detail from climbing type jack of the present invention；
In figure: 1, rotatably pitch ear；2, steel strand wires；3, heavy frame；4, from climbing type jack；5, steel construction otic placode；6, drag-line；41, centre-hole jack；42, after propeller；43, front locker；44, front anchor restorer；421, after propeller gland；422, after propeller spring；423, after propeller intermediate plate；424, after propeller intermediate plate pressure ring；425, after propeller anchor cup；431, front locker anchor cup；432, bolt fixed by front locker；433, front locker intermediate plate；434, front locker intermediate plate pressure ring；435, front locker spring；441, front anchor restorer cover plate；442, front anchor restorer regulation fuse.
Detailed description of the invention
Below in conjunction with accompanying drawing, present disclosure is described further.
As shown in Figure 1, of the present invention from climbing type constructing device for radial cable being promoted in the construction of large-scale flexible cable net structure, steel construction otic placode 5 it is provided with in the construction of large-scale flexible cable net structure, it includes rotatably pitching ear 1, steel strand wires 2, heavy frame 3 and at least two are from climbing type jack 4, described rotatable fork ear 1 is U-shaped structure, described rotatable fork ear 1 is hinged on the bottom of steel construction otic placode 5, described fixing with heavy frame 3 from climbing type jack 4 is connected, steel strand wires 2 are fixed on the rotatable lower end pitching ear 1 through from climbing type jack 4 and heavy frame 5.In FIG, drag-line 6 is arranged on the mid portion of heavy frame 3, two it are provided with from climbing type jack 4 on heavy frame 3, but it is not limited to this, when needing bigger lifting force, can be arranged as required to more from climbing type jack 4, such as 4 even 6, thus improve from the lifting force of climbing type constructing device to realize big lifting tonnage.
Wherein, steel strand wires 2 are in addition to conventional specification is that is a diameter of 15.2mm of Φ 15.2, it is also possible to selecting the steel strand wires 2 of other specifications, such as specification according to the size of lifting force is that is a diameter of 21.8mm of Φ 21.8 and specification is that is a diameter of 28.6mm of Φ 28.6.These Φ 15.2, the Fracture Force the most about 25.6 tons of steel strand wires 2 of Φ 21.8 and Φ 28.6,56 tons and 95 tons, specification according to concrete steel strand wires 2 thus select or repacking adapts from climbing type jack 4, and then realizing can clamping the steel strand wires 2 of all size from climbing type constructing device so that every steel strand wires 2 operationally stress is evenly.
As shown in Figures 2 and 3, described it is made up of centre-hole jack 41, after propeller 42, front locker 43 and front anchor restorer 44 from climbing type jack 4, described after propeller 42 is arranged on bottom described centre-hole jack 41, described front locker 43 is arranged on described centre-hole jack 41 top, and described front anchor restorer 44 is arranged on above described front locker 43；Wherein, described after propeller 42 includes after propeller gland 421, after propeller spring 422, after propeller intermediate plate 423, after propeller intermediate plate pressure ring 424 and after propeller anchor cup 425, after propeller anchor cup 425 and centre-hole jack 41 go out that cylinder end is fixing to be connected, after propeller intermediate plate 423 is inserted in after propeller anchor cup 425, the thick end of after propeller intermediate plate 423 is down, after propeller intermediate plate pressure ring 424 heads on the thick end of after propeller intermediate plate 423, after propeller spring 422 is enclosed within the outer surface of after propeller intermediate plate pressure ring 424, after propeller spring 422 is between after propeller gland 421 and after propeller intermediate plate pressure ring 424；Wherein, described front locker 43 includes front locker anchor cup 431, bolt 432 fixed by front locker, front locker intermediate plate 433, front locker intermediate plate pressure ring 434 and front locker spring 435, front locker anchor cup 431 is fixed bolt 432 by front locker and is fixed on the top of centre-hole jack 41, front locker intermediate plate 433 is inserted in front locker anchor cup 431, the thick end of front locker intermediate plate 433 is down, front locker intermediate plate pressure ring 434 heads on the thick end of front locker intermediate plate 433, front locker spring 435 is enclosed within the outer surface of front locker intermediate plate pressure ring 434, front locker spring 435 is between the top of centre-hole jack 41 and front locker intermediate plate pressure ring 434；Described front anchor restorer 44 includes front anchor restorer cover plate 441 and front anchor restorer regulation fuse 442, and front anchor restorer cover plate 441 is fixing with front locker anchor cup 431 to be connected, and front anchor restorer regulation fuse 442 is between front anchor restorer cover plate 441 and front locker anchor cup 431.In the present invention, front anchor restorer regulation fuse 442 is capable of the stress of centre-hole jack 41 and steel strand wires 2 and automatically unloads, and drastically increases working security.
Common with prior art compared with the climbing type constructing device, of the present invention from climbing type constructing device by improving from climbing type jack, can realize clamping the steel strand wires of all size, and operate simpler, every steel strand wires stress operationally is evenly；Simultaneously, cost can be reduced significantly, the most common height about 1.2 meters, weight about 800 kilograms from climbing type constructing device cost about 30,000/platform, and use of the present invention from climbing type constructing device on the premise of being capable of identical lifting, have only to its most about 0.7 meter, weight about double centner, so every the cost from climbing type constructing device of the present invention the most about 0.8 ten thousand/platform, as can be seen here, on cost, not only there is greater advantage, also uniform the biggest advantage on other indexs such as height or weight, thus have lightweight, simple structure, constructing operation is convenient, it is easily installed and the advantage such as dismounting；Meanwhile, in the oblique lifting construction that also can be widely used to flexible cable web frame from climbing type constructing device of the present invention.
Meanwhile, the present invention also provide for simultaneously a kind of utilize above-mentioned from climbing type constructing device carry out from climbing type construction method, including construction time use steel construction otic placode 5 and drag-line 6, the method comprises the following steps,
Step 1: select the specification of steel strand wires 2 and the specification from climbing type jack 4 according to actual needs；
Step 2: will rotatably pitch ear 1 and steel strand wires 2 are fixed on steel construction otic placode 5；
Step 3: heavy frame 3 is arranged on the lower end of drag-line 6, and by the lower end of steel strand wires 2 through heavy frame 3；
Step 4: will be installed on heavy frame 3 from climbing type jack 4, and steel strand wires 2 are installed in climbing type jack 4；
Specifically, steel strand wires 2 are installed to by step 4 comprise the following steps in climbing type jack 4,
Step 41: open front anchor restorer regulation fuse 442 and make front locker intermediate plate 433 loosen, and open after propeller gland 421, loosen after propeller spring 422 and make after propeller intermediate plate 423 loosen；
Step 42: by steel strand wires 2 through from the various piece of climbing type jack 4；
Step 43: fixing after propeller gland 421 makes after propeller spring 422 compress after propeller intermediate plate 423, turns off front anchor restorer regulation fuse 442, i.e. completes to install.
Step 5: starting centre-hole jack 41, centre-hole jack 41 goes out cylinder, and after propeller 42 locks steel strand wires 2, and front locker intermediate plate 433 is opened, and promotes heavy frame 3 and drag-line 6 to climb along steel strand wires 2 from climbing type jack 4；
Step 6: centre-hole jack 41 starts back cylinder after going out cylinder 150mm, after returning cylinder 2mm, front locker intermediate plate 433 shrinks, and locks steel strand wires 2；
Step 7: after continuing back cylinder 2mm, after propeller spring 422 compresses, and after propeller intermediate plate 423 is opened；
Step 8: after continuing back cylinder 146mm, centre-hole jack 41 the most upwards climbs with after propeller 42, completes a climb operation；
Step 9: repeat step 5～8, it is achieved climb continuously.
Further, drag-line 6 rope head apart from distance in place at 50mm～100mm time, centre-hole jack 41 go out for the last time cylinder operation.
Further, before centre-hole jack 41 goes out cylinder operation for the last time, open front anchor restorer regulation fuse 442 and make front locker intermediate plate 433 loosen.
Further, before drag-line 6 is installed and put in place, centre-hole jack 41 keeps going out cylinder operation for the last time, puts in place until drag-line 6 is installed.After drag-line 6 is installed and put in place, 41 times cylinders of centre-hole jack, after propeller intermediate plate 423 is in locking state, departs from heavy frame 3 from climbing type jack 4, and steel strand wires 2 unload.
Finally, when centre-hole jack 41 is removed by needs, after propeller gland 421 is opened to loosen after propeller spring 422, then taps after propeller anchor cup 425 with hand hammer and open after propeller intermediate plate, then complete to remove.
Above content has been described in detail from climbing type jack and from climbing type constructing device and construction method of the present invention; but the present invention is not limited to by specific embodiments described above content; so all any improvement, equivalent modifications and replacements etc. carried out according to technical key point, belong to the scope of protection of the invention.
Claims (7)
1. the method carrying out constructing from climbing type from climbing type constructing device, the steel construction otic placode used during including construction and drag-line, it is characterized in that: this from climbing type constructing device, for radial cable being promoted in the construction of large-scale flexible cable net structure, it includes rotatably pitching ear, steel strand wires, heavy frame and at least two are from climbing type jack, should be from climbing type jack by centre-hole jack, after propeller, front locker and front anchor restorer are constituted, described after propeller is arranged on bottom described centre-hole jack, described front locker is arranged on described centre-hole jack top, described front anchor restorer is arranged on above described front locker；Described after propeller includes after propeller gland, after propeller spring, after propeller intermediate plate, after propeller intermediate plate pressure ring and after propeller anchor cup, after propeller anchor cup and centre-hole jack go out that cylinder end is fixing to be connected, after propeller intermediate plate is inserted in after propeller anchor cup, the thick end of after propeller intermediate plate is down, after propeller intermediate plate pressure ring heads on the thick end of after propeller intermediate plate, after propeller spring housing is at the outer surface of after propeller intermediate plate pressure ring, and after propeller spring is between after propeller gland and after propeller intermediate plate pressure ring；Described front locker includes that front locker anchor cup, front locker fix bolt, front locker intermediate plate, front locker intermediate plate pressure ring and front locker spring, the top being bolted to centre-hole jack fixed by front locker anchor cup by front locker, front locker intermediate plate is inserted in front locker anchor cup, the thick end of front locker intermediate plate is down, front locker intermediate plate pressure ring heads on the thick end of front locker intermediate plate, front locker spring housing is at the outer surface of front locker intermediate plate pressure ring, and front locker spring is between the top of centre-hole jack and front locker intermediate plate pressure ring；Described front anchor restorer includes front anchor restorer cover plate and front anchor restorer regulation fuse, front anchor restorer cover plate is fixing with front locker anchor cup to be connected, front anchor restorer regulation fuse is between front anchor restorer cover plate and front locker anchor cup, each two from climbing type jack symmetry through the two ends of heavy frame, two steel strand wires are through being connected with two rotatable fork ears respectively from climbing type jack and heavy frame, described rotatable fork ear is U-shaped structure, jaw position symmetric clamp is at the two ends of steel construction otic placode, and it is hinged with steel construction otic placode by bearing pin, it comprises the following steps from climbing type construction method,
Step 1: select the specification of steel strand wires and the specification from climbing type jack according to actual needs；
Step 2: will rotatably pitch ear and steel strand wires symmetry is fixed on steel construction otic placode with bearing pin；
Step 3: heavy frame is arranged on the lower end of drag-line, and by the lower end of steel strand wires through heavy frame；
Step 4: will be installed on heavy frame from climbing type jack, and steel strand wires are installed in climbing type jack；
Step 5: start centre-hole jack, centre-hole jack goes out cylinder, after propeller locking steel strand wires, and front locker intermediate plate is opened, and promotes heavy frame and drag-line to climb along steel strand wires from climbing type jack；
Step 6: centre-hole jack starts back cylinder after going out cylinder 150mm, after returning cylinder 2mm, front locker intermediate plate shrinks, and locks steel strand wires；
Step 7: after continuing back cylinder 2mm, after propeller spring-compressed, after propeller intermediate plate is opened；
Step 8: after continuing back cylinder 146mm, centre-hole jack the most upwards climbs with after propeller, completes a climb operation；
Step 9: repeat step 5～8, it is achieved climb continuously；
Wherein steel strand wires are installed to by step 4 comprise the following steps in climbing type jack,
Step 41: open front anchor restorer regulation fuse and make front locker intermediate plate loosen, and open after propeller gland, loosen after propeller spring and make after propeller intermediate plate loosen；
Step 42: by steel strand wires through from the various piece of climbing type jack；
Step 43: fixing after propeller gland makes after propeller spring compression after propeller intermediate plate, turns off front anchor restorer regulation fuse, i.e. completes to install.
The method carried out from climbing type constructing device from climbing type construction the most according to claim 1, it is characterised in that: described from climbing type constructing device include 4 or 6 as claimed in claim 1 from climbing type jack.
The method carried out from climbing type constructing device from climbing type construction the most according to claim 1, it is characterised in that: a diameter of 15.2mm, 21.8mm or 28.6mm of described steel strand wires.
The most according to claim 1 from climbing type constructing device carry out from climbing type construction method, it is characterised in that: drag-line rope head apart from distance in place at 50mm～100mm time, centre-hole jack go out for the last time cylinder operation.
The method carried out from climbing type constructing device from climbing type construction the most according to claim 4, it is characterised in that: before centre-hole jack goes out cylinder operation for the last time, open front anchor restorer regulation fuse and make front locker intermediate plate loosen.
The method carried out from climbing type constructing device from climbing type construction the most according to claim 4, it is characterised in that: before drag-line is installed and put in place, centre-hole jack keeps going out cylinder operation for the last time.
The method carried out from climbing type constructing device from climbing type construction the most according to claim 6, it is characterized in that: after drag-line is installed and put in place, centre-hole jack returns cylinder, and after propeller intermediate plate is in locking state, departing from heavy frame from climbing type jack, steel strand wires unload.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410065941.3A CN103771292B (en) | 2014-02-26 | 2014-02-26 | A kind of method carried out from climbing type constructing device from climbing type construction |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410065941.3A CN103771292B (en) | 2014-02-26 | 2014-02-26 | A kind of method carried out from climbing type constructing device from climbing type construction |
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| CN103771292A CN103771292A (en) | 2014-05-07 |
| CN103771292B true CN103771292B (en) | 2017-01-04 |
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| CN201410065941.3A Expired - Fee Related CN103771292B (en) | 2014-02-26 | 2014-02-26 | A kind of method carried out from climbing type constructing device from climbing type construction |
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Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106758818A (en) * | 2016-11-17 | 2017-05-31 | 中国建筑第四工程局有限公司 | A kind of Bailey beam provision for disengagement |
| CN106976713B (en) * | 2017-05-03 | 2018-12-25 | 中国科学院沈阳自动化研究所 | A kind of inclined-plane automatic positioning mechanism |
| CN108821080A (en) * | 2018-08-22 | 2018-11-16 | 北京奇力建通工程技术有限公司 | Lifting traction device |
| CN109775628B (en) * | 2019-01-29 | 2024-04-30 | 北京城建集团有限责任公司 | Double-rope lifting device and construction method thereof |
| CN113152560A (en) * | 2019-02-17 | 2021-07-23 | 南平市建阳区汽车锻压件厂 | Underground cross bore construction equipment |
| CN110271984A (en) * | 2019-02-17 | 2019-09-24 | 南平市建阳区汽车锻压件厂 | Axle lift mechanism and preparation method thereof |
| CN113622683B (en) * | 2021-10-13 | 2021-12-24 | 北京市建筑工程研究院有限责任公司 | Tool suitable for synchronous lifting and tensioning of double cables of cable structure and using method |
| CN114856235B (en) * | 2022-04-22 | 2024-03-19 | 上海市机械施工集团有限公司 | Cable structure dismounting device and construction method thereof |
| CN114541776B (en) * | 2022-04-28 | 2022-07-12 | 北京市建筑工程研究院有限责任公司 | Stay cable lifting and tensioning conversion device and construction method thereof |
| CN116065831B (en) * | 2023-02-15 | 2024-07-26 | 哈尔滨工业大学 | General cable tensioning force-bearing device adopting spring constraint, cable tensioning device and construction method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2001302171A (en) * | 2000-04-14 | 2001-10-31 | Maeda Corp | Hoisting jig |
| CN1223743C (en) * | 2003-01-27 | 2005-10-19 | 张阳生 | Jacking device for self climbing type poles and method for jacking self climbing type poles of high voltage iron towers |
| CN2695428Y (en) * | 2004-05-17 | 2005-04-27 | 铁道科学研究院 | Front clamp type low expansion lifting jack |
| CN101607655B (en) * | 2009-07-24 | 2012-04-11 | 沈皆乐 | Self-help lift safety gear |
| CN203347248U (en) * | 2013-06-13 | 2013-12-18 | 中建八局大连建设工程有限公司 | Self-climbing-type tensioning tool |
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