CN114108478B - Steel box girder combined bridge deck crane supporting and anchoring system and walking method - Google Patents
Steel box girder combined bridge deck crane supporting and anchoring system and walking method Download PDFInfo
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- CN114108478B CN114108478B CN202111442344.4A CN202111442344A CN114108478B CN 114108478 B CN114108478 B CN 114108478B CN 202111442344 A CN202111442344 A CN 202111442344A CN 114108478 B CN114108478 B CN 114108478B
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 96
- 239000010959 steel Substances 0.000 title claims abstract description 96
- 238000004873 anchoring Methods 0.000 title claims abstract description 61
- 238000000034 method Methods 0.000 title claims abstract description 16
- 230000007246 mechanism Effects 0.000 claims description 5
- 230000000149 penetrating effect Effects 0.000 claims description 5
- 239000002131 composite material Substances 0.000 claims 2
- 238000010276 construction Methods 0.000 abstract description 5
- 238000009435 building construction Methods 0.000 abstract description 2
- 230000006872 improvement Effects 0.000 abstract description 2
- 230000008569 process Effects 0.000 description 2
- 238000004904 shortening Methods 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Classifications
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D21/00—Methods or apparatus specially adapted for erecting or assembling bridges
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- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Leg Units, Guards, And Driving Tracks Of Cranes (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
The utility model relates to the technical field of building construction, in particular to a steel box girder combined bridge deck crane supporting and anchoring system and a walking method. The bridge deck crane comprises a bridge deck crane bracket and a track laid on a steel box girder and longitudinally arranged, wherein a front end supporting structure is arranged on the bridge deck crane bracket, and the front end of the bridge deck crane bracket is supported on the steel box girder and/or the steel truss when the bridge deck crane is in an operation state; the rear end supporting structure is positioned at the rear end of the bridge deck crane bracket and is anchored on the steel box girder when the bridge deck crane is in an operation state; the walking structure is connected to the track in a sliding manner and used for driving the bridge deck crane bracket to move along the track; the jacking structure is used for driving the bridge deck crane bracket to vertically move before the bridge deck crane enters a walking state so that the walking structure is supported on the track. The supporting and anchoring system has the advantages of simple structure, convenient operation, great improvement of construction efficiency and safety, avoidance of damage to the steel box girder and the track, and great popularization value.
Description
Technical Field
The utility model relates to the technical field of building construction, in particular to a steel box girder combined bridge deck crane supporting and anchoring system and a walking method.
Background
When the bridge is hoisted, the crane is required to support and anchor under the working conditions of hoisting, walking and the like (also called as a branch anchor system). The traditional anchorage system needs independent hoisting mechanical support, walking mechanical support and hoisting mechanical anchorage. The utility model of China patent with the name of "a running gear of a bridge deck crane" is disclosed in the patent No. CN206941419U, which describes a running gear of a bridge deck crane, comprising: at least one group of driving devices arranged at the front pivot beam of the bridge deck crane to drive the bridge deck crane to move; the travelling wheel is arranged below the rear anchor beam of the bridge deck crane and is fixed with the rear anchor beam through a fixing piece. The driving device includes: a track; the cylinder body of the hydraulic cylinder is hinged with the upper surface of the track; the track contact is hinged with the extending end of the hydraulic cylinder piston and is fixed with a front supporting point beam of the bridge deck crane; and the upper part of the jack is connected with the front pivot cross beam. The walking mechanism simplifies the rear walking device into the walking wheel, and the walking theory can directly utilize the power of the front walking device to walk, so that the walking mechanism of the whole bridge deck crane becomes light and flexible. However, the travelling mechanism only considers the travelling of the bridge crane, in practice, in the use of the bridge crane, the supporting and anchoring are important parts in the whole use process, but the travelling mechanism only limits the overturning of the bridge crane by buckling on the track through the back buckle, and the whole supporting is completely based on the track, namely the bridge crane introduced by the patent is completely supported on the track, which is applicable to the light small bridge crane, but obviously not feasible for the large heavy bridge crane. For the steel box girder of the steel box girder combined bridge of thousands of tons, the internal webs are thinner for reducing the weight, and cannot provide a sufficient number and strength of supporting and anchoring structures for the crane, so that the conventional crane supporting and anchoring system cannot be used.
Disclosure of Invention
The utility model aims to solve the defects of the background technology and provides a steel box girder combined bridge deck crane supporting and anchoring system and a walking method.
The technical scheme of the utility model is as follows: the steel box girder combined bridge deck crane supporting and anchoring system comprises a bridge deck crane bracket and a track which is paved on a steel box girder and is longitudinally arranged, wherein the bridge deck crane bracket is provided with a plurality of steel box girders,
the front end supporting structure is positioned at the front end of the bridge deck crane bracket and is supported on the steel box girder and/or the steel truss when the bridge deck crane is in an operation state;
the rear end supporting structure is positioned at the rear end of the bridge deck crane bracket and is anchored on the steel box girder when the bridge deck crane is in an operation state;
the walking structure is connected to the track in a sliding manner and used for driving the bridge deck crane bracket to move along the track;
the jacking structure is used for driving the bridge deck crane bracket to vertically move before the bridge deck crane enters a walking state so that the walking structure is supported on the track.
Further said front end support structure comprises,
the front support balance longitudinal beam is longitudinally arranged and can be hinged and connected to the front end of the bridge deck crane bracket in a rotating manner around a horizontal transverse axis;
the front support balance beam is transversely arranged and hinged to the end part of the front support balance beam in a manner of rotating around the horizontal longitudinal axis;
the upper ends of the cushion legs are supported on the end parts of the front support balance beams, and the lower ends of the cushion legs are supported on the steel box beams or the steel trusses;
the front supporting feet are positioned on the cushion legs and used for supporting the front supporting balance beam;
and the front supporting adjusting structure is fixed between the front supporting feet and the front supporting balance beam and used for adjusting the stroke of the front supporting feet.
Further bridge floor loop wheel machine support's front end is provided with two along the horizontal spacing front support balance longeron of arranging, and the both ends of front support balance longeron all are provided with a front support balance crossbeam, and two front support balance longerons and two front support balance crossbeams form criss-cross frame structure.
Further said front support adjustment structure comprises,
the upper end of the front adjusting nut hand wheel is spirally arranged on the front supporting balance beam in a penetrating way, and the lower end of the front adjusting nut hand wheel is rotatably connected with the front supporting foot around the vertical axis.
Further said back-end support structure comprises,
the rear anchoring balance beam is longitudinally arranged and is hinged to the rear end of the bridge deck crane bracket in a rotatable manner around a horizontal transverse axis;
the upper end of the anchoring pull rod penetrates through the rear anchoring balance beam, and the lower end of the anchoring pull rod is connected with the lifting lug on the steel box beam;
and the rear adjusting structure is used for adjusting the tension degree of the anchoring pull rod.
Further the post-adjustment structure may comprise,
the anchoring nut hand wheel is arranged on the rear anchoring balance beam and connected with the upper end of the anchoring pull rod, and the tension degree of the anchoring pull rod is adjusted through spiral rotation.
Further the walking structure comprises a plurality of walking structures,
the front walking support leg is fixed at the front end of the bridge deck crane bracket at the upper end, and a front sliding shoe which is connected with the track in a sliding way is arranged at the lower end of the front walking support leg;
a rear walking supporting leg, the upper end of which is fixed at the rear end of the bridge deck crane bracket, and the lower end of which is provided with a rear sliding shoe which is connected with the track in a sliding way;
the walking pushing cylinder is provided with an ear seat, one end of which is fixed on the front walking supporting leg, and the other end of which is fixed on the track through a bolt.
Further the jacking construction comprises that,
the upper end of the front support jacking cylinder is fixed on the upper end of the front walking supporting leg, and the lower end of the front support jacking cylinder is supported on the steel box girder;
the upper end of the rear supporting jacking cylinder is fixed on the upper end of the rear walking supporting leg, and the lower end of the rear supporting jacking cylinder is supported on the steel box girder.
The walking method of the steel box girder combined bridge deck crane supporting and anchoring system is characterized in that the fixed connection of a front end supporting structure and a rear end supporting structure with the steel box girder and the steel girder is released, the walking structure is adjusted through a jacking structure to enable the walking structure to be located on a track, the walking structure drives a bridge deck crane bracket to advance to a next station, the walking structure is adjusted through the jacking structure to enable the walking structure to be separated from the track, and the front end supporting structure and the rear end supporting structure are fixed on the steel box girder and the steel girder again to finish walking of the bridge deck crane.
The method for fixedly connecting the front end supporting structure and the rear end supporting structure with the steel box girder and the steel truss further comprises the following steps: lifting the front end of the bridge deck crane bracket through the jacking structure to separate the front end supporting structure from the steel box girder and the steel truss, and finishing the adjustment of the front end of the bridge deck crane bracket when the walking structure at the front end of the bridge deck crane bracket supports the track; the bridge deck crane support is adjusted through the jacking structure, so that the walking structure at the rear end of the bridge deck crane is supported on the track, the rear end supporting structure at the rear end of the bridge deck crane support is dismantled, and the adjustment of the rear end of the bridge deck crane support is completed.
Further comprises the following steps:
1) Lifting the front part of the bridge deck crane bracket to the front end support structure through a front support lifting cylinder in the lifting structure, separating front supporting feet in the front end support structure from the surfaces of the steel box girder and the steel truss, shortening the stroke of the front supporting feet in the front end support structure by a front adjusting nut hand wheel in the front end support structure, shrinking the front support lifting cylinder, and pressing front sliding shoes in the walking structure on the track;
2) Lifting the rear part of the bridge deck crane bracket by a rear support jacking cylinder in the rear end supporting structure, withdrawing an adjusting base plate in a rear sliding shoe in the walking structure, contracting the rear support jacking cylinder, pressing the rear sliding shoe on a track, rotating an anchor nut hand wheel in the rear end supporting structure, and removing an anchor pull rod in the rear end supporting structure to the next anchor position;
3) The walking pushing oil cylinder in the walking structure pushes the bridge deck crane bracket to slide forwards, so that walking operation is realized;
4) When walking to the hoisting operation position, after the anchoring state of the rail is checked, lifting the front part of the bridge deck crane bracket by using a front support jacking cylinder, and adjusting the stroke of the front supporting leg to the surface contacted with the steel box girder and the pad leg of the steel truss by using a front adjusting nut hand wheel; supporting the jacking cylinder before shrinkage;
5) And slightly lifting the rear part of the bridge deck crane bracket by using the rear supporting jacking cylinder, placing a proper number of adjusting base plates between the rear sliding shoes and the track after the bridge deck crane bracket is leveled, supporting the jacking cylinder after contraction, supporting the rear sliding shoes on the adjusting base plates of the track, installing an anchoring pull rod, and carrying out related lifting operation procedures.
The utility model has the advantages that: 1. according to the utility model, the supporting structures are respectively arranged at the front end and the rear end of the bridge deck crane bracket, when the bridge deck crane is in an operation state, the bridge deck crane is supported on the steel box girder and the steel truss, so that the problems that the stability is poor and the track or the box girder structure is easy to damage when the large bridge deck crane is supported on the track are solved, and the supporting of the bridge deck crane bracket is switched between the operation state and the walking state of the bridge deck crane through the jacking structure, so that the construction efficiency is greatly improved, and the bridge deck crane bracket has great popularization value;
2. the front end supporting structure is supported on the steel box girder and the steel truss, so that the damage to the web plate of the steel box girder, which is possibly caused by the complete support on the steel box girder, is avoided, and the front end supporting structure comprises the front support adjusting structure, so that the transfer and the switching of the supporting positions are facilitated;
3. each group of front support structure comprises two front support balance longitudinal beams and two front support balance cross beams, and the two front support balance longitudinal beams and the two front support balance cross beams form a crisscross frame structure, so that the stability of front end support is improved;
4. the front support adjusting structure comprises the front adjusting nut hand wheel, the travel of the front supporting leg can be conveniently adjusted by the adjusting nut hand wheel through a bolt rotation mode, so that the support system of the bridge deck crane bracket is switched, and the adjusting mode is extremely simple and convenient;
5. the rear end supporting structure is an anchoring structure, is anchored on the lifting lug of the steel box girder through the anchoring pull rod, is simple and convenient in installation and adjustment mode, is stable, and provides good stable support for the bridge deck crane in an operation state;
6. the rear end supporting structure comprises the anchoring nut hand wheel, tension adjustment of the anchoring pull rod can be realized through the anchoring nut hand wheel, and the adjustment mode is simple and convenient;
7. the walking structure is extremely simple, the front sliding shoes and the rear sliding shoes slide on the track through the front walking supporting legs and the rear walking supporting legs, the walking pushing oil cylinder drives the bridge deck crane bracket to move along the track, and the moving mode is extremely simple and convenient;
8. the lifting structure comprises a front supporting lifting cylinder and a rear supporting lifting cylinder, wherein the front supporting lifting cylinder and the rear supporting lifting cylinder respectively drive a front walking supporting leg and a rear walking supporting leg to vertically move, so that the support and the lifting of a bridge deck crane bracket are conveniently switched, and the bridge deck crane is conveniently switched between an operation state and a walking state;
9. the walking method of the bridge deck crane is extremely simple, and is different from the traditional bridge deck crane which is supported on the steel box girder and the steel truss in both the working state and the walking state, so that the damage caused by hoisting the steel box girder or the track of a large team of weight during the working is avoided, and the efficiency and the safety of the whole construction are improved;
10. the bridge deck crane is extremely simple in the switching process of the operation state and the walking state, and the safety of the bridge deck crane support system switching is greatly improved by firstly switching the support system at the front end of the bridge deck crane support and then switching the support system at the rear end of the bridge deck crane support.
The supporting and anchoring system has the advantages of simple structure, convenient operation, great improvement of construction efficiency and safety, avoidance of damage to the steel box girder and the track, and great popularization value.
Drawings
Fig. 1: the front view of the bridge deck crane of the utility model;
fig. 2: the bridge deck crane of the utility model is a side view;
fig. 3: front end support structure side views of the present utility model;
fig. 4: front end support structure front view of the utility model;
fig. 5: a side view of the rear support structure of the present utility model;
fig. 6: front view of the back end supporting structure of the utility model;
wherein: 1-a bridge deck crane bracket; 2-track; 3-front support balance stringers; 4-front support balance beam; 5-front support legs; 6-front adjusting nut hand wheel; 7-anchoring the balance beam; 8-anchoring tie rods; 9-anchoring a nut hand wheel; 10-front walking legs; 11-front slipper; 12-rear walking legs; 13-rear slipper; 14-a walking pushing cylinder; 15-a front support jacking cylinder; 16-a rear support jacking cylinder; 17-steel box girder; 18-a steel truss; 19-steel box girder cushion legs; 20-steel truss pad legs; 21-lifting lugs; 22-ear seat.
Detailed Description
Embodiments of the present utility model are described in detail below, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative and intended to explain the present utility model and should not be construed as limiting the utility model.
In the description of the present utility model, it should be understood that the terms "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the drawings, are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.
Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present utility model, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.
The utility model will now be described in further detail with reference to the drawings and to specific examples.
As shown in fig. 1 to 6, the present embodiment relates to a steel box girder combined bridge crane support system, specifically including bridge crane supports 1, the bridge crane supports 1 are metal structures of the whole bridge crane, the bridge crane supports 1 of the present embodiment are divided into two groups, are arranged at intervals along the transverse direction, are arranged at two sides of the steel girders, and a corresponding track 2 is laid under each group of bridge crane supports 1, and the bridge crane supports 1 slide on the corresponding track 2.
The bridge deck crane bracket 1 of this embodiment is in the walking state, and bridge deck crane bracket 1 supports on track 2, and when bridge deck crane bracket 1 is in the operation state, bridge deck crane bracket 1 supports on steel box girder 17 and steel truss 18 of bridge deck, does not support on steel box girder 17 alone, in order to avoid large-scale bridge deck crane bracket 1 to support and cause the damage of steel box girder 17 on steel box girder 17. When the bridge deck crane bracket 1 is in an operation state, the bridge deck crane bracket 1 is supported by a front end supporting structure at the front end and a rear end supporting structure at the rear end.
Specifically, as shown in fig. 3 to 4, the front end support structure is a schematic diagram of the front end support structure of the present embodiment, the front end support structure includes a front support balance beam 3 disposed longitudinally and pivotally connected to the front end of the bridge deck crane bracket 1 about a horizontal transverse axis, a front support balance beam 4 disposed transversely and pivotally connected to the end of the front support balance beam 3 about a horizontal longitudinal axis, a cushion leg whose upper end is supported at the end of the front support balance beam 4, whose lower end is supported on the steel box beam 17 or the steel truss 18, and a front support foot 5 disposed on the cushion leg for supporting the front support balance beam 4, where the cushion leg includes a steel box beam cushion leg 19 supported on the steel box beam 17 and a steel truss cushion leg 20 supported on the steel truss 18, and different corresponding cushion legs are adopted for different positions, and the front support foot 5 rests on the cushion leg, and in order to adjust the vertical stroke of the front support foot 5, a front support adjusting structure is disposed between the front support foot 5 and the front support foot 4.
As shown in fig. 3 to 4, the front support adjusting structure comprises a front adjusting nut hand wheel 6, the upper end of the front adjusting nut hand wheel 6 is spirally arranged on the front support balance beam 4 in a penetrating manner, and the lower end of the front adjusting nut hand wheel 6 is rotatably connected with the front supporting leg 5 around a vertical axis. The vertical travel of the front supporting leg 5 can be adjusted by rotating the front adjusting nut hand wheel 6, the upper end of the front supporting leg 5 is of a back-buckling structure, the lower end of the front adjusting nut hand wheel 6 stretches into the back-buckling structure of the front supporting leg 5, the front adjusting nut hand wheel 6 and the back-buckling structure are fixedly connected in the vertical direction, and the front adjusting nut hand wheel 6 can be connected to the front supporting leg 5 in a rotating mode around a vertical axis.
The front end supporting structure of each bridge deck crane bracket 1 comprises two front supporting balance longitudinal beams 3 which are arranged at intervals in the transverse direction, two front supporting balance longitudinal beams 4 are arranged at two ends of each front supporting balance longitudinal beam 3, each front supporting balance longitudinal beam 4 is connected with two front supporting balance longitudinal beams 3, and the two front supporting balance longitudinal beams 3 and the two front supporting balance longitudinal beams 4 form a crisscross frame structure. The front support balance longitudinal beam 3 is hinged to the bridge deck crane bracket 1 through a transverse rotating shaft, the front support balance cross beam 4 is hinged to the front support balance longitudinal beam 3 through a longitudinal rotating shaft, and the balance of the whole frame type structure can be adjusted through the corresponding front supporting feet 5. In order to ensure the balance of the stress, the rotating shaft of the front support balance beam 3 connected with the bridge deck crane bracket 1 in this embodiment overlaps with the front walking leg 10 in the vertical direction, as shown in fig. 2 to 3.
The rear end supporting structure of this embodiment is shown in fig. 5, and the rear end supporting structure includes a rear anchoring balance beam 7 which is arranged longitudinally and is hinged and connected to the rear end of the bridge deck crane bracket 1 in a manner of rotating around a horizontal transverse axis, the rear end balance beam 7 is positioned at the inner side of a rear walking leg 12, as shown in fig. 6, an anchoring pull rod 8 is arranged on the rear anchoring balance beam 7 in a penetrating manner, the upper end of the anchoring pull rod 8 is arranged on the rear anchoring balance beam 7 in a penetrating manner, the lower end of the anchoring pull rod 8 is connected to a lifting lug 21 on a steel box beam 17, an anchoring nut hand wheel 9 is arranged between the anchoring pull rod 8 and the rear anchoring balance beam 7, and the anchoring nut hand wheel 9 is arranged on the rear anchoring balance beam 7 and is connected with the upper end of the anchoring pull rod 8 to adjust the tension of the anchoring pull rod 8 through spiral rotation. When the tension of the anchoring pull rod 8 needs to be adjusted, the tension of the anchoring pull rod 8 can be adjusted by rotating the anchoring nut hand wheel 9.
The walking structure of this embodiment is shown in fig. 2, and the walking structure includes a front walking leg 10, wherein the upper end of the front walking leg 10 is fixed at the front end of the bridge deck crane bracket 1, the lower end is provided with a front sliding shoe 11 which is slidably connected to the track 2, and further includes a rear walking leg 12, the upper end of the rear walking leg 12 is fixed at the rear end of the bridge deck crane bracket 1, and the lower end is provided with a rear sliding shoe 13 which is slidably connected to the track 2. The front walking support leg 10 is provided with an ear seat 22, the ear seat 22 is provided with a walking pushing cylinder 14, one end of the walking pushing cylinder 14 is fixed on the ear seat on the front walking support leg 10, and the other end is fixed on the track 2 through a bolt. When the bridge deck crane support 1 needs to move, the walking pushing cylinder 14 is fixed on the track 2 through the bolts, the track 2 is provided with pin holes which are longitudinally arranged at intervals, the walking pushing cylinder 14 drives the bridge deck crane support 1 to move along the track 2, the walking pushing cylinder 14 of the embodiment moves in a stepping mode, after one stroke of the walking pushing cylinder 14 is completed, the bolts are pulled out, the walking pushing cylinder 14 is retracted, then the walking pushing cylinder 14 is fixed in the other pin hole, and pushing is performed again until the bridge deck crane support 1 moves to the next operation station.
In order to realize the conversion of the support system of the bridge deck crane support 1, in this embodiment, a jacking structure is arranged on the bridge deck crane support 1, as shown in fig. 2 to 6, the jacking structure of this embodiment includes a front support jacking cylinder 15, the upper end of the front support jacking cylinder 15 is fixed on the front walking support leg 10, the lower end is supported on the steel box girder 17, and further includes a rear support jacking cylinder 16, the upper end of the rear support jacking cylinder 16 is fixed on the rear walking support leg 12, and the lower end is supported on the steel box girder 17. When the support system is required to be switched, the front support jacking cylinder 15 and the rear support jacking cylinder 16 are jacked upwards, so that the sliding shoes are separated from the track 2, or the sliding shoes are switched to move onto the track 2, and the switching of the support system is completed.
The specific walking method is as follows: when walking, firstly, the front supporting jacking cylinder 15 lifts the front part of the bridge deck crane bracket 1 to the point that the front supporting feet 5 are slightly separated from the surfaces of the steel box girders 17 and the cushion legs of the steel trusses 18, so that the front adjusting nut hand wheels 6 are used for shortening the travel of the front supporting feet 5; the front supporting jacking cylinder 15 is contracted, and the front sliding shoes 11 are pressed on the track 2; then, the rear supporting jacking cylinder 16 slightly lifts the rear part of the bridge deck crane bracket 1 and removes the adjusting base plate in the rear sliding shoe 13; subsequently, the rear sliding shoes 13 are pressed on the track 2 after the supporting jacking cylinders 16 are contracted; then, the anchoring nut hand wheel 9 is rotated, and the anchor pull rod 8 is removed to the next anchoring position; the walking pushing cylinder 14 pushes the bridge deck crane bracket 1 to slide forwards, so that walking operation is realized.
When walking to a hoisting operation position, after checking the anchoring state of the track 2, lifting the front part of the bridge deck crane bracket 1 by using a front support jacking cylinder 15, and adjusting the stroke of the front supporting feet 5 to be in micro contact with the surfaces of the steel box girders 17 and the pad legs of the steel trusses 18 by using a front adjusting nut hand wheel 6; supporting the jacking cylinder 15 before shrinkage; subsequently, slightly lifting the rear part of the bridge deck crane bracket 1 by using a rear supporting jacking cylinder 16, and placing a proper number of adjusting base plates between the rear sliding shoes 13 and the track 2 after the bridge deck crane bracket 1 is leveled; then, the jacking cylinder 16 is supported after shrinkage, and the rear sliding shoe 13 is supported on an adjusting base plate of the track 2; at this time, the anchor rod 8 can be installed and the relevant hoisting operation procedure can be performed.
As shown in fig. 2, the lateral direction of the present embodiment refers to the direction perpendicular to the paper surface in fig. 2, the longitudinal direction refers to the left-right direction in fig. 2, and the vertical direction refers to the up-down direction in fig. 2.
The foregoing has shown and described the basic principles, principal features and advantages of the utility model. It will be understood by those skilled in the art that the present utility model is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present utility model, and various changes and modifications may be made without departing from the spirit and scope of the utility model, which is defined in the appended claims. The scope of the utility model is defined by the appended claims and equivalents thereof.
Claims (8)
1. The utility model provides a steel case purlin combination bridge floor loop wheel machine anchorage system, includes bridge floor loop wheel machine support (1) and lays track (2) along longitudinal arrangement on steel case roof beam (17), its characterized in that:
the bridge deck crane bracket (1) is provided with,
the front end supporting structure is positioned at the front end of the bridge deck crane bracket (1) and is supported on the steel box girder (17) and/or the steel truss (18) when the bridge deck crane is in an operation state;
the rear end supporting structure is positioned at the rear end of the bridge deck crane bracket (1) and is anchored on the steel box girder (17) when the bridge deck crane is in an operation state;
the walking structure is connected to the track (2) in a sliding manner and is used for driving the bridge deck crane bracket (1) to move along the track (2);
the lifting structure is used for driving the bridge deck crane bracket (1) to vertically move before the bridge deck crane enters a walking state so that the walking structure is supported on the track (2);
the front-end support structure comprises a front-end support structure,
the front support balance longitudinal beam (3) is longitudinally arranged and is hinged to the front end of the bridge deck crane bracket (1) in a rotatable manner around a horizontal transverse axis;
a front support balance beam (4) which is arranged in a transverse direction and is hinged to the end of the front support balance longitudinal beam (3) in a manner of rotating around a horizontal longitudinal axis;
the upper ends of the cushion legs are supported on the end parts of the front support balance beams (4), and the lower ends of the cushion legs are supported on the steel box girders (17) or the steel trusses (18);
the front supporting feet (5) are positioned on the cushion legs and are used for supporting the front supporting balance beam (4);
the front supporting adjusting structure is fixed between the front supporting feet (5) and the front supporting balance beam (4) and used for adjusting the stroke of the front supporting feet (5).
2. A steel box girder combined bridge deck crane anchorage system as claimed in claim 1, wherein: the bridge deck crane support comprises a bridge deck crane support body, wherein the front end of the bridge deck crane support body (1) is provided with two front support balance longitudinal beams (3) which are arranged at intervals in the transverse direction, two front support balance transverse beams (4) are arranged at two ends of each front support balance longitudinal beam (3), and the two front support balance longitudinal beams (3) and the two front support balance transverse beams (4) form a crisscross frame structure.
3. A steel box girder combined bridge deck crane anchorage system as claimed in claim 1, wherein: the front support adjustment structure includes,
the upper end of the front adjusting nut hand wheel (6) is spirally arranged on the front supporting balance beam (4) in a penetrating way, and the lower end of the front adjusting nut hand wheel is rotatably connected with the front supporting foot (5) around the vertical axis.
4. A steel box girder combined bridge deck crane anchorage system as claimed in claim 1, wherein: the back-end support structure comprises a back-end support structure,
the rear anchoring balance beam (7) is longitudinally arranged and is hinged and connected to the rear end of the bridge deck crane bracket (1) in a rotatable manner around a horizontal transverse axis;
the upper end of the anchoring pull rod (8) is penetrated through the rear anchoring balance beam (7), and the lower end of the anchoring pull rod is connected with the lifting lug on the steel box beam (17);
and the rear adjusting structure is used for adjusting the tension degree of the anchoring pull rod (8).
5. A steel box girder composite bridge deck crane anchorage system as claimed in claim 4, wherein: the rear adjustment structure may comprise a rear adjustment mechanism,
and an anchoring nut hand wheel (9) is arranged on the rear anchoring balance beam (7) and is connected with the upper end of the anchoring pull rod (8), and the tension of the anchoring pull rod (8) is adjusted through spiral rotation.
6. A steel box girder combined bridge deck crane anchorage system as claimed in claim 1, wherein: the walking structure comprises a walking device and a walking device, wherein the walking structure comprises a walking device,
a front walking supporting leg (10), the upper end of which is fixed at the front end of the bridge deck crane bracket (1), and the lower end of which is provided with a front sliding shoe (11) which is connected with the track (2) in a sliding way;
a rear walking supporting leg (12), the upper end of which is fixed at the rear end of the bridge deck crane bracket (1), and the lower end of which is provided with a rear sliding shoe (13) which is connected with the track (2) in a sliding way;
the walking pushing cylinder (14) is provided with one end fixed on the lug seat on the front walking supporting leg (10) and the other end fixed on the track (2) through a bolt.
7. A steel box girder composite bridge deck crane anchorage system as claimed in claim 6, wherein: the jacking structure comprises a plurality of jacking structures,
the upper end of the front supporting jacking cylinder (15) is fixed on the upper end and the lower end of the front walking support leg (10) and is supported on the steel box girder (17);
the upper end of the rear supporting jacking cylinder (16) is fixed on the upper end and the lower end of the rear walking support leg (12) and is supported on the steel box girder (17).
8. A method for walking a steel box girder combined bridge deck crane anchor system as claimed in any one of claims 1 to 7, characterized by: the fixed connection of the front end supporting structure and the rear end supporting structure with the steel box girder (17) and the steel truss (18) is released, the walking structure is located on the track through the adjustment of the jacking structure, the walking structure drives the bridge deck crane bracket to advance to the next station, the walking structure is separated from the track through the adjustment of the jacking structure, the front end supporting structure and the rear end supporting structure are fixed on the steel box girder (17) and the steel truss (18) again, and the walking of the bridge deck crane is completed; the method specifically comprises the following steps of:
1) Front supporting jacking cylinders (15) in the jacking structure are used for lifting the front part of the bridge deck crane bracket (1) to the surface of a front end supporting structure, front supporting feet (5) in the front end supporting structure are separated from the surfaces of a steel box girder (17) and a steel truss (18), the travel of the front supporting feet (5) in the front end supporting structure is shortened by front adjusting nut hand wheels (6) in the front end supporting structure, the front supporting jacking cylinders (15) are contracted, and front sliding shoes (11) in the walking structure are pressed on the track (2);
2) The rear supporting jacking cylinder (16) in the rear end supporting structure lifts the rear part of the bridge deck crane bracket (1), the adjusting base plate in the rear sliding shoe (13) in the walking structure is removed, the rear sliding shoe (13) is pressed on the track 2 after being contracted to support the jacking cylinder (16), the anchor nut hand wheel (9) in the rear end supporting structure is rotated, and the anchor pull rod (8) in the rear end supporting structure is removed to the next anchor position;
3) The bridge deck crane bracket (1) is pushed to slide forwards by a walking pushing cylinder (14) in the walking structure, so that walking operation is realized;
4) When the crane walks to a hoisting operation position, after the anchoring state of the rail (2) is checked, the front part of the bridge deck crane bracket (1) is lifted by a front supporting jacking cylinder (15), and the travel of the front supporting leg (5) is adjusted by a front adjusting nut hand wheel (6) until the front supporting leg contacts the surfaces of the pad legs of the steel box girder (17) and the steel truss (18); supporting a jacking cylinder (15) before shrinkage;
5) The rear part of the bridge deck crane bracket (1) is slightly lifted by the rear supporting jacking cylinder (16), after the bridge deck crane bracket (1) is leveled, a proper number of adjusting base plates are placed between the rear sliding shoes (13) and the track (2), the rear sliding shoes (13) are supported on the adjusting base plates of the track (2) after the rear supporting jacking cylinder (16) is contracted, an anchoring pull rod (8) is installed, and relevant hoisting operation procedures can be carried out.
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