CN201161878Y - Movable tower crane face operation construction apparatus - Google Patents
Movable tower crane face operation construction apparatus Download PDFInfo
- Publication number
- CN201161878Y CN201161878Y CNU200720201495XU CN200720201495U CN201161878Y CN 201161878 Y CN201161878 Y CN 201161878Y CN U200720201495X U CNU200720201495X U CN U200720201495XU CN 200720201495 U CN200720201495 U CN 200720201495U CN 201161878 Y CN201161878 Y CN 201161878Y
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- tower crane
- bridge
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- moving tower
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Abstract
The utility model discloses a mobile tower crane bridge deck operating and constructing device, which comprises a mobile tower crane, wherein the mobile tower crane comprises a tower body (1) and a running platform (2), the mobile tower crane is arranged on a bridge deck (3) which is built well, a running orbit (4) is arranged on the bridge deck (3), and a bearing plate (5) and a sleeper (6) are arranged between the running orbit (4) and the bridge deck (3). The utility model has the following advantages that the construction period can be shortened by near 20% to 30%, thereby the working efficiency is greatly increased, the labor demand can be reduced to 40 to 50% of the original size, and the relative machine device investment is reduced to about 40% of the original size. The working efficiency is increased and simultaneously the safe parameters in the construction are increased, thereby increasing the reliability of the whole construction scheme. The mobile tower crane bridge deck operating and constructing device has strong adaptability and can be nearly used in all construction of concrete bridges and continuous steel structures.
Description
Technical field
The utility model relates to a kind of in bridge construction process, and the moving tower crane bridge surface running constructing device at the bridge surface running moving tower crane belongs to the highway bridge construction technical field.
Background technology
Rc beam bridge has had the history of last 100 years, through long-term practice and theoretical investigation, people are day by day ripe to the understanding of reinforced concrete structure and prestressed reinforced concrete construction, structural system is also fairly perfect, therefore the Master Cost of bridge accounts on the ratio of whole construction costs and descends to some extent, and the shared ratio of the wage of executive cost and labour power is rising, so executive cost has very important influence to construction costs.For long continuous beam on many supports bridge and the continuous rigid frame that surpasses 200m of bridge, for transporting of construction machinery and equipment material, normally many tower cranes are installed and are carried out continuous handling in the whole construction section, perhaps a tower crane is installed at an end of bridge, on the bridge floor that has constructed, the machine material is carried out the secondary transhipment by vehicle then, be transported to the bridge construction position.Existing situation shows, many tower cranes is installed or a tower crane is installed that again construction machine material to be carried out the secondary transhipment all be uneconomic no matter be.Especially for build in the mountain area, the bridge of deep valley and shallow water area material transport difficulty; Overlength bridge for region of no relief; Or for situations such as high pier bridges, all the more so.
Summary of the invention
The purpose of this utility model is: a kind of moving tower crane bridge surface running constructing device that can move moving tower crane on bridge floor is provided, in bridge construction process, reduces the demand to mechanical equipment, labour power, shorten construction period, save construction cost.
The utility model is achieved in that it comprises moving tower crane, moving tower crane comprises body of the tower 1 and travelling platform 2, moving tower crane is arranged on the bridge floor 3 that has constructed, is provided with walking track 4 on bridge floor 3, is provided with backing plate 5 and sleeper 6 between walking track 4 and bridge floor 3.
Above-mentioned moving tower crane bridge surface running constructing device is provided with the reinforcing bar 7 that is used for fixing between two walking tracks 4.
Above-mentioned moving tower crane bridge surface running constructing device is provided with the circular arc cushion block 8 that is used to keep body of the tower 1 vertical between body of the tower 1 and travelling platform 2.
Above-mentioned moving tower crane bridge surface running constructing device is provided with the smart deformed bar 9 of pricking around travelling platform 2, the smart deformed bar 9 of pricking is fixed on the bridge floor 3; On body of the tower 1 top 4 steel cables 10 are set, steel cable 10 links to each other with embedded bar 11 on the bridge floor 3.
Moving tower crane normally uses on ground gradings such as harbour, bulk storage plant, and self counterweight that moving tower crane is used in the bridge construction moving tower crane is big, and it is that ground flat degree is good that walking requires, and surface slope generally can not surpass 2 ‰.Rc beam bridge is in work progress, the longitudinal gradient of its bridge floor and horizontal wall inscription all can reach about 3%～3%, and the bridge floor unfairness of just having built, the bridge floor superelevation gradually changes by 3%～3%, the applicant by improvement and optimization to moving tower crane travelling platform, track and walking manner, makes moving tower crane can satisfy tower crane standard vertical degree all the time in the whole service process and is no more than 2 ‰ in construction.Because the load that common decking bear is little, concentrated load is no more than 30～50t usually, and moving tower crane adds counterweight, 80～100t weighs, the load of decking is far below the total weight of moving tower crane, therefore the applicant, can not all install all center saddle weights of moving tower crane, so need compensate by the deadweight that retrains tower crane fixedly the time at moving tower crane.Specific practice is: the travelling platform of moving tower crane is pricked deformed bar by essence all around, be temporarily fixed on the bridge floor; , it is linked to each other with bridge floor railing embedded bar, by 4 steel cables in tower crane end standard joint stage casing to alleviate the counterweight of moving tower crane.Through applicant's test, after working fastening, moving tower crane can normally carry out handling work.Therefore the utility model has solved the influence of objective problem such as deck profile grade, horizontal curve, vertical curve and superelevation variation in the bridge construction, has realized moving tower crane smooth walking and lift heavy on bridge floor, and the wound whole nation is the first.
The applicant tests by bridge construction, and the situation after using moving tower crane organization of labour situation before and using is tabulated respectively to be compared as follows:
Labour power is organized information slip before introducing moving tower crane
And, more and more far away along with the long growth of bridge from the position of original fixedly tower crane, on material transport, also will drop into more labour powers.
Labour power is organized information slip after introducing moving tower crane
After introducing moving tower crane, from operating personal, tower crane commanding officer, all fallen sharply especially for the labour power of aspects such as material transport, in addition, because the shortening in man-hour, total labor force only is 47.4% of original labour power.
More traditional construction is because moving tower crane itself has characteristics such as good manoevreability and alerting ability, so will simplify manyly at aspects such as the input of plant and uses.The applicant is compared as follows (only listing relevant device) with the plant input situation of two kinds of constructions in the experimental project:
Mechanical equipment dropped into the situation synopsis before and after the introducing worker dispelled
As can be seen from the above table, for big bridge construction, the input aspect material transport and installation, the expense of associated mechanical material production behind the novel construction method introduced only are original 40.2%.
The utlity model has following advantage:
1, adopt moving tower crane bridge construction scheme in construction, the demand to mechanical equipment, the quantity of labour force to reduce to minimum degree.
2,, and can save the lot of materials transhipment time and building materials is arranged the time because the utility model has increased the manoevreability of bridge construction, thus construction period can be shortened nearly 20～30%, thereby improved production efficiency greatly; And labour demand is contracted to original 40～50%; The associated machines input reduces to original about 40%.
3, the utility model has been taken all factors into consideration factors such as the bridge floor in the bridge construction, wind speed and geographical environment, and equipment is optimized at each factor, when increasing work efficiency, increased the safety factor in the construction, thereby improved the reliability of whole construction scheme.
4, the utility model so the utility model comformability is strong, almost can be used for the construction of all concrete beam bridges and continuous rigid frame because the optimal design of associated components such as mechanical equipment and running rail thereof is all taked principle for convenience detach, that change.
Description of drawings
Structural representation when accompanying drawing 1 is walked for the utility model moving tower crane;
Accompanying drawing 2 is the solid timer-operated structural representation of the utility model moving tower crane;
Accompanying drawing 3 is the structural representation of walking track connecting reinforcement.
The specific embodiment
Embodiment of the present utility model: adopt the moving tower crane of existing market, moving tower crane comprises body of the tower 1 and travelling platform 2.Moving tower crane is transported to the initiating terminal that bridge is built, rc beam bridge is to build by a length of striding, after the case beam of bridge is built, moving tower crane is arranged on the bridge floor 3 that has constructed, and the installation of the track 4 that on bridge floor 3, begins to walk, so that running to next strides, walking track 4 length are 50m (standard is striden the case beam length), can oneself will walk track 4 and sleeper 6 of moving tower crane carries out the handling conversion, need not manually to pull, backing plate 5 is set on bridge floor 3, sleeper 6 is set on the backing plate 5, and walking track 4 is fixed on the sleeper 6 by rivet, and backing plate 5 adopts steel plate, be used for guaranteeing that the optional position is stressed evenly reliable on walking track 4 length overalls, avoid the influence of superelevation on the bridge floor 3.Walking track 4 needs 2 sections at least, and one section is used for the moving tower crane walking, and another section is by moving tower crane handling the place ahead to walking.
According to the horizontal wall inscription gradient on the on-the-spot bridge floor 3, adopt both sides to have the sleeper 6 of diff-H to level up, guarantee that 2 walking tracks 4 are on same horizontal surface, and it is parallel with bridge floor 3, the longitudinal gradient gradient for bridge floor 3, fixing circular arc cushion block 8 between body of the tower 1 and the travelling platform 2, be used to keep body of the tower 1 squareness to be no more than 2 ‰.
Between two walking tracks 4, also be connected with reinforcing bar 7, be used for fixing the spacing of the track 4 of walking.
After track 4 installs walking, just can walk to moving tower crane.Moving tower crane can not be in the walking of the strong wind world in order to avoid cause danger, because the influence of deck profile grade, moving tower crane must compensate its antidumping moment when walking.Can by calculating, on the arm 12 of body of the tower 1, hang on clump weight 13 according to the gradient of longitudinal gradient, enough antidumping moment is arranged when walking to guarantee moving tower crane.And for preventing the generation of situations such as card rail and derailing, 4 return pulleys of travelling platform 2 all need to be responsible for observation by the special messenger, in case termination walking immediately abnormal condition appears then.In addition, the safety factor when increasing moving tower crane walking prevents the generation of greater impact load, and moving tower crane must adopt shelves at a slow speed when walking, promptly 12.5 meters/minute, forbids to adopt high speed gear travel (25 meters/minute).
Be responsible for to observe all hand-held brake steel disc of 4 workmans of travelling platform 2 return pulleys, if tower crane meets accident when walking and stops and falling back automatically by gravity effect, then this 4 people stops by force moving tower crane with the steel disc that brakes immediately.
Moving tower crane is walked behind the handling position, with the brake steel disc travelling platform 2 return pulleys are fixed, and the smart deformed bar 9 of pricking is set around travelling platform 2, the smart deformed bar 9 of pricking is temporarily fixed on the bridge floor 3; On body of the tower 1 top 4 steel cables 10 are set, steel cable 10 links to each other with embedded bar 11 on the bridge floor 3.And on moving tower crane, pressing the clump weight of constant weight, total weight can not surpass the load of bridge floor 3.For making tower crane safer, reliable, the many places cable rope can also be set on moving tower crane, link together with the pre-buried guardrail reinforcing bar of bridge floor 3.
After moving tower crane is fixed on the bridge floor 3, just can carry out handling to construction machine material nearby.In bridge construction, moving tower crane is mainly used in and cooperates Construction Through Form on Traveler to build concrete box girder, owing to not occurring two complete equipments in the construction,, now its construction process figure is summarized in following so two cover mechanical equipments can only use a cable all in the situation of running:
(box girder construction finishes the installation of tower crane walking track, stretch-draw prestressing force, the mobile formwork withdraw from use)--→ mobile formwork moves to next and strides (moving tower crane withdraw from use)--→ moving tower crane moves to next and strides, box girder construction (mobile formwork is quiescence)--→ box girder construction finishes in cooperation, enters next circulation.
Moving tower crane and mobile formwork are united the process of construction, and moving tower crane is trailed mobile formwork, to satisfy material transport and the layout in the Prestressed Continuous Box Beam construction.Each cycle puts in place from the mobile formwork walking, from below the bridge floor all reinforcing bars, prestressed material and mechanical equipment etc. being winched to bridge floor and it being arranged, until concreting, carries out the construction of next sections by moving tower crane.
In work progress of the present utility model, must carry out strict quality aspect several in sleeper, track, body of the tower squareness etc., below this is briefly introduced.
1, sleeper: sleeper mainly act as leveling walking track bottom surface, make inside and outside two siding tracks in same pile No. place be in same horizontal surface, it is just flat to need survey crew carry out; Distributed load makes moving tower crane reasonably be delivered on the bridge floor because of the load that deadweight, lift heavy and wind loading produce.
2, walking track:,, need during the walking track is installed strictly to control two tracks whether on same horizontal surface so can satisfy the bridge construction of all turn radiuss greater than 600m because moving tower crane base minimum turning radius is 600m; And the smooth-going degree between the track seam, in order to avoid cause the card rail in the process of walking.The track gauge deviation of moving tower crane is 4500 ± 2mm, must have rivet to be connected and fixed between track and the sleeper; Must level up with backing plate between bridge floor and the sleeper, guarantee that the optional position is stressed evenly reliable on the walking track length overall.
3, body of the tower squareness: whether the body of the tower squareness satisfies the tower crane operating specification, promptly less than 2 ‰, is the key that can moving tower crane place in operation, needs to carry out strictness by survey crew to this index and control in construction.
In the moving tower crane bridge surface running construction, the main branch of the control of secure context walk process, Anping process, use and the correct way when inactive etc. several aspect, below this is done simple the introduction.
1, walking process: the safety problem in the moving tower crane walking process notes the following aspects:
Can not walk in the strong wind world;
Need to confirm to remove all interim constraints of tower crane and bridge floor before the walking;
Confirm that power system is normal;
In tower crane when walking, need at the arm clump weight of having hung oneself, and to guarantee tower crane enough antidumping moment arranged when the walking;
4 return pulleys of travelling platform all need to be responsible for observation by the special messenger, situations such as card rail and derailing take place need stop walking at once;
Because the influence of bridge longitudinal gradient, during the tower crane walking, for bridge, tower crane and personnel's safety, the speed of travel must adopt shelves at a slow speed, promptly 12.5 meters/minute, forbids to adopt high speed gear travel (25 meters/minute).
2, Anping process: moving tower crane Anping process safe problem notes the following aspects:
Do not allow lift heavy during Anping;
Need survey crew to be responsible for the body of the tower squareness in the process of tower crane Anping to guarantee outside the safety between used life;
After body of the tower squareness debugging finishes, need to check between travelling platform and track, track and sleeper and sleeper and the bridge floor whether contact well, the position of coming to nothing need be with material paddings such as steel plates;
Interim constraints such as correct installation wind resistance hawser.
3, use: the safety problem in the moving tower crane use notes the following aspects:
Strong wind weather bans use of moving tower crane;
The moving tower crane arm is tower crane least favorable state with the bridge floor angle of cut at 45 the time, and for improving safety factor, lifting by crane maximum weight this moment is 90% of lift heavy restriction;
After finishing using with arm along bridge to putting.
Claims (4)
1. moving tower crane bridge surface running constructing device, it comprises moving tower crane, moving tower crane comprises body of the tower (1) and travelling platform (2), it is characterized in that: moving tower crane is arranged on the bridge floor (3) that has constructed, on bridge floor (3), be provided with walking track (4), between walking track (4) and bridge floor (3), be provided with backing plate (5) and sleeper (6).
2. moving tower crane bridge surface running constructing device according to claim 1 is characterized in that: be provided with the reinforcing bar (7) that is used for fixing between two walking tracks (4).
3. moving tower crane bridge surface running constructing device according to claim 1 is characterized in that: be provided with between body of the tower (1) and travelling platform (2) and be used to the circular arc cushion block (8) that keeps body of the tower (1) vertical.
4. moving tower crane bridge surface running constructing device according to claim 1 is characterized in that: be provided with the smart deformed bar (9) of pricking all around at travelling platform (2), the smart deformed bar (9) of pricking is fixed on the bridge floor (3); On body of the tower (1) top 4 steel cables (10) are set, steel cable (10) links to each other with embedded bar (11) on the bridge floor (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200720201495XU CN201161878Y (en) | 2007-11-28 | 2007-11-28 | Movable tower crane face operation construction apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200720201495XU CN201161878Y (en) | 2007-11-28 | 2007-11-28 | Movable tower crane face operation construction apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201161878Y true CN201161878Y (en) | 2008-12-10 |
Family
ID=40182819
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU200720201495XU Expired - Lifetime CN201161878Y (en) | 2007-11-28 | 2007-11-28 | Movable tower crane face operation construction apparatus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201161878Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103991811A (en) * | 2014-04-29 | 2014-08-20 | 浙江海洋学院 | Novel lifting device |
| CN105000482A (en) * | 2015-08-02 | 2015-10-28 | 周兆弟 | Tower crane with running mechanism |
| CN106957014A (en) * | 2017-04-25 | 2017-07-18 | 中国十九冶集团有限公司 | Mobile hoisting mechanism |
| CN107724260A (en) * | 2016-08-12 | 2018-02-23 | 北京万桥兴业机械有限公司 | Bridge machine is torn in steel bridge or steel reinforced concrete bridge split open |
-
2007
- 2007-11-28 CN CNU200720201495XU patent/CN201161878Y/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103991811A (en) * | 2014-04-29 | 2014-08-20 | 浙江海洋学院 | Novel lifting device |
| CN105000482A (en) * | 2015-08-02 | 2015-10-28 | 周兆弟 | Tower crane with running mechanism |
| WO2017020539A1 (en) * | 2015-08-02 | 2017-02-09 | 周兆弟 | Tower crane with a traveling mechanism |
| CN107724260A (en) * | 2016-08-12 | 2018-02-23 | 北京万桥兴业机械有限公司 | Bridge machine is torn in steel bridge or steel reinforced concrete bridge split open |
| CN106957014A (en) * | 2017-04-25 | 2017-07-18 | 中国十九冶集团有限公司 | Mobile hoisting mechanism |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20081210 |