CN204325945U - A kind of thrustor for box girder with variable cross section - Google Patents
A kind of thrustor for box girder with variable cross section Download PDFInfo
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- CN204325945U CN204325945U CN201420689384.8U CN201420689384U CN204325945U CN 204325945 U CN204325945 U CN 204325945U CN 201420689384 U CN201420689384 U CN 201420689384U CN 204325945 U CN204325945 U CN 204325945U
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- longeron
- height
- case beam
- thrustor
- variable cross
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Abstract
The utility model relates to bridge construction field, refers to a kind of thrustor for box girder with variable cross section particularly.Also comprise height-regulating device; Described height-regulating device comprises the jacking height-regulating mechanism for regulating lifting body height be arranged between longeron and lower longeron; The resistant slide cushion block that described jacking height-regulating mechanism comprises the cushion block adjust high cylinder between longeron and lower longeron and is arranged between longeron and lower longeron.The utility model can use when box girder with variable cross section incremental launching construction, and unique incremental launching device Height Adjustment mode, can meet when the curvilinear motion of case beam base plate is larger, ensures that incremental launching device can normally stressed and steady propelling.The utility model structure is simple, easy for installation, has great promotional value.
Description
Technical field
The utility model relates to bridge construction field, refers to a kind of thrustor for box girder with variable cross section particularly.
Background technology
Incremental launching construction arranges construction plant at the rear of abutment, steel box-girder incremental launching construction, segmented jointing steel box beam, at Liang Tiqian, nose girder is installed, then exerted a force by level jack, by beam body forwards pushing tow go out construction plant, repeat these operations and can complete whole beam body construction.
During conventional boxes beam incremental launching construction, be often flat bottom surface bottom its case beam, namely box section bottom plate heights is constant, and now incremental launching device and bearing height do not need to adjust with bottom plate heights.For the case beam of case beam bottom plate heights with curvilinear motion, because the case beam base plate discrepancy in elevation is comparatively large, what adopt traditional push construction method to be difficult to ensure incremental launching device and case beam normally to contact and stressed, is difficult to normal for case beam pushing tow to put in place.
Utility model content
The purpose of this utility model is exactly the deficiency that will solve above-mentioned background technology, provides a kind of thrustor for box girder with variable cross section.
The technical solution of the utility model is: a kind of thrustor for box girder with variable cross section, comprises lower longeron, is arranged at the upper longeron of lower longeron upper surface and is fixed on load-bearing bearing and the incremental launching device of longeron upper surface; Described incremental launching device comprise for promote case beam rise lifting body, for promote case beam transverse shifting horizontal propulsive mechanism and for promoting longitudinal propulsive mechanism that case beam vertically moves, it is characterized in that: also comprise the jacking height-regulating mechanism for regulating lifting body height be arranged between longeron and lower longeron; Described jacking height-regulating mechanism comprises the adjust high cylinder be arranged between longeron and lower longeron and the resistant slide height adjusting cushion block be arranged between longeron and lower longeron.
Further also comprise the counter-force oil cylinder for promoting the rising of case beam being fixed on lower longeron upper surface.
The upper end of further described adjust high cylinder is fixed on the outside of longeron, and lower end is fixed on the outside of lower longeron.
The arranged outside of further described upper longeron has the first otic placode, and the arranged outside in the outside of lower longeron has the second otic placode; Described adjust high cylinder upper end is fixed on the first otic placode, and lower end is fixed on the second otic placode.
Tensioning screw is provided with between further described upper longeron and lower longeron.
The utility model can use when box girder with variable cross section incremental launching construction, and unique incremental launching device Height Adjustment mode, can meet when the curvilinear motion of case beam base plate is larger, ensures that incremental launching device can normally stressed and steady propelling.The utility model structure is simple, easy for installation, has great promotional value.
Accompanying drawing explanation
Fig. 1: elevation of the present utility model;
The A-A sectional drawing of Fig. 2: Fig. 1;
Fig. 3: along bridge to cross sectional representation;
Fig. 4: the assembled schematic diagram of pushing tow;
Wherein: 1-incremental launching construction platform; 2-lower longeron; 3-upper longeron; 4-load-bearing bearing; 5-incremental launching device; 6-lifting body; 7-longitudinal propulsive mechanism; 8-adjust high cylinder; 9-height adjusting cushion block; 10-counter-force oil cylinder; 11-tensioning screw; 12-case beam; 13-nose girder; 14-platform for lining; 15-pier stud; 16-the first otic placode; 17-the second otic placode; 18-horizontal propulsive mechanism.
Detailed description of the invention
As shown in figures 1-4, pushing tow structure comprises incremental launching construction platform 1, this operation platform 1 is according to practical application design and installation, and as shown in Figure 4, operation platform 1 can be arranged on platform for lining 14, be arranged on the Dun Ding of the pier stud 15 of having built or be arranged on the support temporarily built.By operation platform 1, the weight of case beam 12 is transferred to below to ground, ensure the stability in work progress.
The upper end of operation platform 1 is provided with lower longeron 2 and upper longeron 3, and load-bearing bearing 4 and incremental launching device 5 are not known in the upper end of upper longeron 3, and load-bearing bearing 4 is for supporting the weight of whole case beam 12 when falling at incremental launching device 5.Incremental launching device 5 comprises lifting body 6, horizontal propulsive mechanism 18 and longitudinal propulsive mechanism 7, and lifting body 6 promotes case beam 12 and rises, and horizontal propulsive mechanism 18 advances case beam 12 transverse shifting, and longitudinal propulsive mechanism 7 advances the longitudinal forward travel of case beam 12.During practical application, case beam 12 is shelved on the upper end of a slide block, the lower end of slide block is shelved on the upper surface of slip device, be generally smooth stainless-steel sheet or tetrafluoro slide plate, horizontal propulsive mechanism 18 and longitudinal propulsive mechanism 7 promote slide block transverse direction or vertically move on slip device, complete the transverse direction of case beam 12 or vertically move with this.
In order to adapt to case beam 12 lower surface curvilinear motion amplitude this situation comparatively large, the utility model is provided with height-regulating device between upper longeron 3 and lower longeron 2, comprise the adjust high cylinder 8 be fixed between longeron 3 and lower longeron 2, the arranged outside of upper longeron 3 has the first otic placode 16, the arranged outside in the outside of lower longeron 2 has the second otic placode 17, adjust high cylinder 8 upper end is fixed on the first otic placode 16, and lower end is fixed on the second otic placode 17.When incremental launching device needs raise or reduce height, by rising the height of adjust high cylinder 8, raise or reduce incremental launching device and the distance between upper longeron 3 and lower longeron 2, after having adjusted, the height adjusting cushion block 9 of antiskid on padding between two longerons, transfer weight, on height adjusting cushion block 9, effectively can adapt to case beam 12 lower surface curvilinear motion situation like this.
When there is change in the height between upper and lower longeron, need to increase some stabilization works between, such as tensioning screw 11, tensioning screw 11 one end is fixed on longeron 3, the other end is fixed on lower longeron 2, upper and lower longeron when adjust high cylinder 8 regulates highly can be balanced like this, ensure that, when adjustment process, upper and lower longeron can stable equilibrium.
During practical application, the simple height using adjust high cylinder 8 to regulate incremental launching device 5, the weight of case beam 12 can be pressed in the upper end of whole adjust high cylinder 12, and such load adjustment difficulty is comparatively large, and safety is low.Therefore, counter-force oil cylinder 10 is also provided with in the upper surface of upper longeron 3, when needing the height regulating incremental launching device 5, case beam 12 is held up by lifting counter-force oil cylinder 10, the weight of case beam 12 is transferred on counter-force oil cylinder 10, go up the weight that longeron 3 and incremental launching device 5 upper end just do not have case beam 12 like this, adjust high cylinder 8 no-load adjustment height, reduce difficulty, substantially increase safety.
In order to guard box beam 12 keeps correct track and direction in moving process, need to install in the front end of case beam 12 to arrange a nose girder 13, the tail end of nose girder 13 is connected with the front end of case beam 12, the lower end of nose girder 13 is also provided with a set of pushing tow structure, ensures that nose girder 13 towing tank beam 12 advances according to definitive orbit.
Construction sequence is as follows: 1, below case beam 12 after installation thrustor 5, start the height of lifting body 6 vertical-lifting case beam 12, start longitudinal propulsive mechanism 7 and horizontal propulsive mechanism 18, promote case beam 12 longitudinally or laterally to slide, after being advancing to the position, regulating lifting body 6 to decline and make the weight of case beam 12 transfer on load-bearing bearing 4;
2, case beam 12 stable fixing after, start counter-force oil cylinder 10 and promote case beam 12 and rise diversion box beam 12 weight on counter-force oil cylinder 10;
3, after case beam 12 and load-bearing bearing 4 are thrown off, starting adjust high cylinder 8 regulates upper longeron 3 and thrustor 5 to rise to proper height, the height adjusting cushion block 9 of antiskid is set between upper longeron 3 and lower longeron 2, reduce adjust high cylinder 8 height, make longeron 3 and thrustor 5 be shelved on the upper end of height adjusting cushion block 9;
4, after the lower end of thrustor 5 fixedly completes, reduce the height of counter-force oil cylinder 10, make the weight of case beam 12 again transfer on load-bearing bearing 4, start thrustor 5 and make case beam 12 complete progradation again.
The utility model can use when box girder with variable cross section incremental launching construction, and unique incremental launching device Height Adjustment mode, can meet when the curvilinear motion of case beam base plate is larger, ensures that incremental launching device can normally stressed and steady propelling.The utility model structure is simple, easy for installation, has great promotional value.
Claims (5)
1., for a thrustor for box girder with variable cross section, comprise lower longeron (2), be arranged at the upper longeron (3) of lower longeron (2) upper surface and be fixed on load-bearing bearing (4) and the incremental launching device (5) of longeron (3) upper surface; Described incremental launching device (5) comprise for promote lifting body (6) that case beam (12) rises, for promote case beam (12) transverse shifting horizontal propulsive mechanism (18) and for promoting longitudinal propulsive mechanism (7) that case beam (12) vertically moves, it is characterized in that: also comprise the jacking height-regulating mechanism for regulating lifting body (6) height be arranged between longeron (3) and lower longeron (2); Described jacking height-regulating mechanism comprises the adjust high cylinder (8) be arranged between longeron (3) and lower longeron (2) and the resistant slide height adjusting cushion block (9) be arranged between longeron (3) and lower longeron (2).
2. a kind of thrustor for box girder with variable cross section as claimed in claim 1, is characterized in that: also comprise be fixed on lower longeron (3) upper surface for promoting the counter-force oil cylinder (10) that case beam (12) rises.
3. a kind of thrustor for box girder with variable cross section as claimed in claim 1, is characterized in that: the upper end of described adjust high cylinder (8) is fixed on the outside of longeron (3), and lower end is fixed on the outside of lower longeron (2).
4. a kind of thrustor for box girder with variable cross section as claimed in claim 3, it is characterized in that: the arranged outside of described upper longeron (3) has the first otic placode (16), the arranged outside in the outside of lower longeron (2) has the second otic placode (17); Described adjust high cylinder (8) upper end is fixed on the first otic placode (16), and lower end is fixed on the second otic placode (17).
5. a kind of thrustor for box girder with variable cross section as claimed in claim 1, is characterized in that: be provided with tensioning screw (11) between described upper longeron (3) and lower longeron (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420689384.8U CN204325945U (en) | 2014-11-18 | 2014-11-18 | A kind of thrustor for box girder with variable cross section |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420689384.8U CN204325945U (en) | 2014-11-18 | 2014-11-18 | A kind of thrustor for box girder with variable cross section |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204325945U true CN204325945U (en) | 2015-05-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420689384.8U Expired - Fee Related CN204325945U (en) | 2014-11-18 | 2014-11-18 | A kind of thrustor for box girder with variable cross section |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204325945U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105970834A (en) * | 2016-07-28 | 2016-09-28 | 武汉卡特工业股份有限公司 | Intelligent synchronous overloading walking type pushing equipment |
| CN106948268A (en) * | 2017-04-24 | 2017-07-14 | 中铁七局集团武汉工程有限公司 | Variable Section Steel box beam pushing tow is combined the unit and application method |
| CN113123238A (en) * | 2021-04-02 | 2021-07-16 | 中国建筑第六工程局有限公司 | Transverse moving erection method for wide-section steel truss girder |
| CN113235434A (en) * | 2021-04-19 | 2021-08-10 | 中交二航局第二工程有限公司 | High-altitude unequal-height sliding transportation positioning system for large-scale component and construction method |
| CN114606871A (en) * | 2022-03-29 | 2022-06-10 | 武汉思力特种工程机械施工有限公司 | Incremental launching method for variable-cross-section steel beam of long-span bridge |
| CN114875808A (en) * | 2022-06-21 | 2022-08-09 | 中铁十八局集团有限公司 | Jacking height adjustable device used in bridge jacking process |
-
2014
- 2014-11-18 CN CN201420689384.8U patent/CN204325945U/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105970834A (en) * | 2016-07-28 | 2016-09-28 | 武汉卡特工业股份有限公司 | Intelligent synchronous overloading walking type pushing equipment |
| CN106948268A (en) * | 2017-04-24 | 2017-07-14 | 中铁七局集团武汉工程有限公司 | Variable Section Steel box beam pushing tow is combined the unit and application method |
| CN106948268B (en) * | 2017-04-24 | 2023-07-21 | 中铁七局集团武汉工程有限公司 | Variable-section steel box girder pushing combined device and using method thereof |
| CN113123238A (en) * | 2021-04-02 | 2021-07-16 | 中国建筑第六工程局有限公司 | Transverse moving erection method for wide-section steel truss girder |
| CN113235434A (en) * | 2021-04-19 | 2021-08-10 | 中交二航局第二工程有限公司 | High-altitude unequal-height sliding transportation positioning system for large-scale component and construction method |
| CN113235434B (en) * | 2021-04-19 | 2022-07-08 | 中交二航局第二工程有限公司 | High-altitude unequal-height sliding transportation positioning system for large-scale component and construction method |
| CN114606871A (en) * | 2022-03-29 | 2022-06-10 | 武汉思力特种工程机械施工有限公司 | Incremental launching method for variable-cross-section steel beam of long-span bridge |
| CN114606871B (en) * | 2022-03-29 | 2023-09-26 | 武汉思力特种工程机械施工有限公司 | High-section variable steel girder pushing method for large-span bridge |
| CN114875808A (en) * | 2022-06-21 | 2022-08-09 | 中铁十八局集团有限公司 | Jacking height adjustable device used in bridge jacking process |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150513 Termination date: 20211118 |
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| CF01 | Termination of patent right due to non-payment of annual fee |