CN219364352U - Wheel type self-transportation, rotation and jacking integrated bridging device - Google Patents

Abstract

The utility model discloses a wheel type self-transportation, rotation and jacking integrated bridge girder erection device, which is suitable for pushing operation of a curved box girder bridge, wherein the bridge girder erection device is arranged between a pushing platform and a pier, and comprises the following components: the walking part comprises a frame, and a walking wheel, a driving mechanism and a bearing plate are arranged on the frame; the lifting part comprises a base arranged on the bearing plate, a plurality of sections of steel trusses are arranged on the base, and the height of each steel truss is adjusted through a jacking sleeve frame with a hydraulic cylinder; the rotating part comprises a rotary seat arranged at the top of the steel truss, a beam body fixed through a connecting piece is arranged on the rotary seat, a temporary tower and a beam body internal supporting assembly are arranged on the beam body, and a cable connected with the end part of the beam body is arranged at the top of the temporary tower. The utility model can solve the problem that the beam Duan Xianxing of the small-radius curve steel box girder bridge is difficult to control in the pushing and positioning process, optimize the controllability of the construction process, ensure the smooth progress of the construction and accelerate the construction progress.

Description

Wheel type self-transportation, rotation and jacking integrated bridging device

Technical Field

The utility model relates to the technical field of bridge construction, in particular to a wheel type self-transportation, rotation and jacking integrated bridge device for pushing operation of a small-radius curve steel box girder.

Background

In the construction process of the overpass bridge, corresponding technical measures are generally adopted to solve the contradiction of complex construction, operation and construction environment, and the swivel and pushing construction method is an advanced construction method which is born for coping with the contradiction. The construction by the swivel method is to prefabricate the half bridges on the two sides of a river or a road to be crossed by using a simple support by utilizing the topography, then fold the two half bridges to the axis positions of bridge positions by taking the bridge structure as a rotator and using some machines and equipment respectively. The pushing method is a construction method that bridge beams are cast or assembled section by section on bridge head platforms, and a jack is used for applying thrust along the longitudinal direction of the bridge, so that the beams slide into place through temporary support surfaces of the pier tops to form the bridge, and the method has the advantages of safety, rapidness, economy, simple equipment, land saving, stable construction and the like. For the traditional steel box girder for swivel construction, the spherical hinge cannot be recycled, and the body quantity of the swivel pier is large, so that the problems of overhigh bridge cost and long construction period can be caused; for erection and installation operation of small-radius curve steel box girders, the problems that the jacking step length and the jacking route of two side girder bodies of the center line of a bridge are different, and the girder body overturning resistance stability in the jacking process is not high due to the fact that the girder body transversely moves, so that the jacking operation cannot be smoothly performed or the precision of the girder body is not high in place are caused.

Disclosure of Invention

In order to solve the problems, the utility model provides a wheel type self-transportation, rotation and jacking integrated bridging device, which specifically adopts the following technical scheme:

the utility model relates to a wheel type self-transportation, rotation and jacking integrated bridging device, which is suitable for pushing operation of a curved box girder bridge, and is arranged between a pushing platform and a pier, and comprises

The walking part comprises a frame, wherein the frame is provided with walking wheels, a driving mechanism and a bearing plate;

the lifting part comprises a base arranged on the bearing plate, a plurality of sections of steel trusses are arranged on the base, and the height of each steel truss is adjusted through a jacking sleeve frame with a hydraulic cylinder;

the rotating part comprises a rotary seat arranged at the top of the steel truss, a beam body fixed through a connecting piece is arranged on the rotary seat, a temporary tower and a beam body internal supporting assembly are arranged on the beam body, and a cable connected with the end part of the beam body is arranged at the top of the temporary tower.

The steel truss is at least one section, and the bottom of the steel truss is connected with the base and the steel truss through bolts. The proper number of steel trusses can be installed according to Liang Tiding elevation, so that the support of the girder body is ensured.

The upper surface of base, the top surface and the bottom surface of steel truss are all provided with the connecting plate that is used for wearing to establish the bolt. The connecting plate with the bolt holes is convenient for connection between the base and the steel truss.

The temporary tower seat is correspondingly arranged above the rotary seat, and the beam body is symmetrically arranged along the central axes of the rotary seat and the temporary tower seat. The structure improves the connection stability of the beam body and the rotary seat.

The pushing platform and the pier are arranged at intervals along an arc line according to the design position of the curved box girder bridge, and the pushing platform and the pier are respectively provided with a horizontal hydraulic jack and a lifting hydraulic jack. The pushing platform and the bridge pier are arranged according to an arc line, so that the pushing platform and the bridge pier can be matched with a curved box girder bridge to the greatest extent, and connection and installation between box girders are facilitated; the horizontal hydraulic jack and the jacking hydraulic jack are arranged, so that the beam body can be pushed in the vertical and horizontal directions, and the horizontal hydraulic jack and the jacking hydraulic jack are matched with the rotary seat, so that the pushing direction of the beam body can be adjusted in time, and the mounting quality of the beam body is improved.

The wheel type self-transportation, rotation and jacking integrated bridge erecting device provided by the utility model can solve the problems of overhigh cost and long construction period of a steel box girder bridge in rotation construction; the problem that the beam Duan Xianxing of the steel box girder bridge is difficult to control in the pushing and positioning process can be solved. Different from the conventional transverse pushing or limiting deviation correcting mode, the method solves the problem that the small-radius steel box girder in the mountain area is difficult to hoist by lifting the target girder body in situ, reduces the deviation correcting program in the jacking process of the girder body, keeps the designed line shape by rotating the girder body in the follow-up pushing construction, and can keep real-time adjustment of the line shape of the girder in the bridge pushing process, thereby optimizing the controllability of the construction process, ensuring the smooth progress of the construction and accelerating the construction progress. Meanwhile, the self-lifting module is also suitable for erecting and pushing high pier bridges in mountain areas.

Drawings

Fig. 1 is a schematic structural view of the present utility model.

Fig. 2 is a state of use diagram of the present utility model.

Detailed Description

The following describes embodiments of the present utility model in detail with reference to the accompanying drawings, and the embodiments and specific working procedures of the present utility model are given by implementing the present embodiment on the premise of the technical solution of the present utility model, but the protection scope of the present utility model is not limited to the following embodiments.

The wheel type self-transportation, turning and jacking integrated bridging device is suitable for the pushing operation of a box girder bridge, comprises a walking part, a lifting part and a turning part, is assembled together in a modularized design, and can be used for site transportation of a girder section below 300 tons on the ground, jacking installation of a girder section below 1200 tons and turning of a girder section below 1200 tons.

As shown in fig. 1, the travelling part adopts a bottom plate system of a ground crane and comprises a frame 11, wherein travelling wheels 12, a driving mechanism 13 and a bearing plate 14 are arranged on the frame 11.

The lifting part comprises a base 21 arranged on the bearing plate 14, the base 21 is cylindrical, and the top of the base is provided with a connecting plate 22 with a bolt hole; the connecting plate 22 is used for connecting the steel truss 23, one or more sections of the steel truss 23 are vertically arranged, and the specific number of the steel truss is determined according to the lifting height of the roof of the beam body. The cross section of the steel truss 23 is in a rectangular structure, and the four corners of the top surface and the bottom surface of each steel truss 23 are welded with connecting plates 22 with bolt holes for connecting the base 21 and the adjacent steel trusses 23. The multi-section steel truss 23 is realized by a jacking sleeve frame 25 with a hydraulic cylinder 24 when being installed. Specifically, firstly, 2 or 3 steel trusses 23 are installed on a base 21, then, a jacking sleeve frame 25 is installed, after the jacking sleeve frame 25 is lifted to the height of one steel truss 23 by a hydraulic cylinder 24, one steel truss 23 is placed and fixed by bolts, and then, the installation of the rest section steel trusses 23 is completed according to the steps. When the steel truss 23 is installed to a predetermined height, the jacking jig 25 is lowered to the bottom base 21.

The swivel part comprises a rotary seat 31 arranged at the top of the steel truss 23, and a rotary mechanism of the rotary seat 31 comprises a rotary driving system formed by a torque motor and a planetary reducer and is used for swivel construction or pushing deviation correction; the rotary seat 31 is used for placing the beam M to be installed, and the beam M are temporarily fixed by bolting. In order to prevent the cantilever end of the beam M from being excessively bent downwards, a temporary tower 32 is mounted on the beam M, and a cable 33 connected with the left and right ends of the beam M is pulled at the top of the temporary tower 32, thereby improving the stress state of the beam M. In order to keep the beam M itself from deforming during the jacking process, beam internal bracing assemblies 34, i.e. trusses connected by steel members are mounted in the middle and at both ends of the beam M as supports, and the trusses are connected with longitudinal and transverse stiffening in the beam by bolts. In general, the temporary tower 32 is correspondingly disposed above the rotary seat 31, and the beam M is symmetrically disposed along the central axes of the rotary seat 31 and the temporary tower 32, so as to improve the connection stability between the beam M and the rotary seat 31.

As shown in fig. 2, the present utility model is located between a pushing platform a and a pier B1, where the pushing platform a and the piers B1, B2, B3 are arranged at intervals along an arc line according to the design position of a curved box girder bridge, and horizontal hydraulic jacks and lifting hydraulic jacks are installed on the pushing platform a and the piers B1, B2, B3, and usually, a rotary seat 31 is also installed. The pushing platform and the bridge pier which are arranged according to the arc line can be matched with a curved box girder bridge to the greatest extent, and connection and installation between box girders are facilitated; the horizontal hydraulic jack and the jacking hydraulic jack are arranged, so that the beam body can be pushed in the vertical and horizontal directions, meanwhile, the rotary seat 31 is matched with the horizontal hydraulic jack, the pushing direction of the beam body M can be adjusted in time, and therefore the installation quality of the beam body M is improved.

During construction, firstly, a plurality of steel trusses 23 are spliced on a base 21, a jacking sleeve frame 25 is installed, then a rotary seat 31 is installed on the top of the steel trusses 23, a beam body M to be jacked is installed on the rotary seat 31, then a temporary tower seat 32 is installed, a cable 33 is pulled and fixed, then the beam body M is jacked upwards through the jacking sleeve frame 25 according to the designed height value of the beam body M and the jacking stroke of a hydraulic cylinder 24, meanwhile, a proper number of steel trusses 23 are installed to be sequentially overlapped and fixed, after the steel trusses 23 are in place, the beam body M is rotated to a position between a jacking platform A and a pier B1 through the action of the rotary seat 31, liang Duanjian splicing work is carried out, then a horizontal hydraulic jack and a jacking hydraulic jack start to work, namely the horizontal hydraulic jack jacks the beam body along the advancing direction of a bridge, and the rotary seat 31 jacks the beam body to the designed line shape through rotating the correction beam body. Repeating the steps to realize the pushing of the beam M in place.

The wheel type self-transportation, turning and jacking integrated bridging device optimizes the pushing operation of the large-span small-radius curve steel box girder, has the advantages of simple structure, easy control, repeated use, acceleration of construction process, reduction of construction cost and convenient engineering application and popularization.

It should be noted that, in the description of the present utility model, terms such as "front", "rear", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the device or element to be 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.

Claims (5)

1. A wheeled self-transportation, swivel and jacking integrated bridging device is characterized in that: the device is suitable for pushing the curved box girder bridge, and the bridging device is arranged between a pushing platform and a pier and comprises

The walking part comprises a frame, wherein the frame is provided with walking wheels, a driving mechanism and a bearing plate;

the lifting part comprises a base arranged on the bearing plate, a plurality of sections of steel trusses are arranged on the base, and the height of each steel truss is adjusted through a jacking sleeve frame with a hydraulic cylinder;

the rotating part comprises a rotary seat arranged at the top of the steel truss, a beam body fixed through a connecting piece is arranged on the rotary seat, a temporary tower and a beam body internal supporting assembly are arranged on the beam body, and a cable connected with the end part of the beam body is arranged at the top of the temporary tower.

2. The wheel type self-transportation, rotation and jacking integrated bridging device according to claim 1, wherein: the steel truss is at least one section, and the bottom of the steel truss is connected with the base and the steel truss through bolts.

3. The wheel type self-transportation, rotation and jacking integrated bridging device according to claim 2, wherein: the upper surface of base, the top surface and the bottom surface of steel truss are all provided with the connecting plate that is used for wearing to establish the bolt.

4. The wheel type self-transportation, rotation and jacking integrated bridging device according to claim 3, wherein: the temporary tower seat is correspondingly arranged above the rotary seat, and the beam body is symmetrically arranged along the central axes of the rotary seat and the temporary tower seat.

5. The wheel type self-transportation, rotation and jacking integrated bridging device according to claim 4, wherein: the pushing platform and the pier are arranged at intervals along an arc line according to the design position of the curved box girder bridge, and the pushing platform and the pier are respectively provided with a horizontal hydraulic jack and a lifting hydraulic jack.