Open No. 2010-104277 discloses a conventional shinkage bridge including an upper bridge 10 of a bridge, that is, a bridge including a girder and an upper plate, a structure such as a truss or an arch supporting the bridge, and the like And the bridge structure on the upper side of the bridge pier is horizontally rotated about the center bridge bridge 20, and has a structure as shown in Fig.
1 is a two-span bridge in which a bridge pier is constructed at one point. The alternation of bridges serves as an end support 30 supporting both ends of the upper bridge 10, and the bridge bridge 30, which is the only bridge bridge, The pivot shaft of the bridge 10 is formed. In addition, a part of the multi-span bridges having three spans or more may be formed as a span bridge. In this case, the piers other than the alternation bridge function as the end supports 30.
In the shingled bridge, normally, both ends of the upper replacement 10 are mounted on the end support 30, and the bridge connection road and the roads on the upper surface of the upper replacement 10 are connected to perform the original function of the bridge. The upper turn 10 is rotated horizontally about the center bridge bridge 20 as shown by the imaginary line, so that the ship can be navigated.
1, a rotary facility 29 is constructed on the upper part of the central pier 20 to support and rotate the upper replacement 10, It is necessary not only to rapidly rotate but also to stably support various loads such as the weight of the upper replacement 10 during normal operation as well as during rotation. Therefore, the structure and size of the rotary facility 29 are complicated, I can not help it.
In particular, the complication and enlargement of the rotary facility 29 can not help but contribute to an increase in the construction cost of the entire shingles bridge.
Further, since the upper replacement 10 is rotated horizontally in the shingled bridge, it is necessary to sufficiently secure the rotating space of the upper replacement 10 on the end support 30 to which the bridge entry road is connected, The distal end of the upper replacement 10 and the front portion of the end support 30 are formed into an arcuate shape as shown in FIG. 1, because the connection between the upper replacement 10 and the upper replacement 10 is excessively spaced, Have no choice but to.
Because of the configuration of the arc-shaped connection portion of the upper replacement 10 and the end support 30, it is not possible to apply a common joint facility for securing expansion and contraction and ride comfort due to the temperature change. There is a problem that the stability of the vehicle travel and the feeling of ride comfortably deteriorate because the end support 30 and the upper end of the upper replacement 10 must be sufficiently spaced apart from each other for the stability of operation and the expansion and contraction of the member.
SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems, and it is an object of the present invention to provide a bridge structure in which an upper bridge 10 of a bridge rotates horizontally about a center bridge bridge 20, A horizontal running path 53 and a vertical running path 54 are formed on the outer upper surface of the projecting circumference 52 of the base body 51 and the outer circumferential surface of the projecting circumference 52, And a rotary pipe 40 having an upper end connected to the lower surface of the upper replacement 10 is installed on the upper side of the base body 51. A horizontal rotation axis is formed on the outer peripheral surface of the lower end of the rotary pipe 40 And a plurality of vertical rollers 42 having a vertical rotation axis are radially mounted on the inner circumferential surface of the rotary tube 40. A plurality of vertical rollers 42 are rotatably mounted on the projecting circumference 52 by a driving unit 58, And a pinion 55 which is engaged with the pinion 55 is provided in the inside of the rotary pipe 40, The rack 45 is mounted and the horizontal rollers 41 and the vertical rollers 42 travel along the horizontal travel path 53 and the vertical travel path 54 as the pinion 55 rotates, And the upper replacement (10) are rotated.
In the span bridge where the upper bridge 10 of the bridge rotates horizontally about the center bridge bridge 20, the end support 30 which normally supports the end portion of the upper bridge 10 is formed with a recessed portion 35 A lifting cylinder 60 is provided at the upper end of the lifting cylinder 65 so that the lifting cylinder 60 is lifted and lowered as the lifting cylinder 65 is expanded and contracted as a rectangular enclosure The upper surface elevation of the ascending / descending member 60 at the time of ascending coincides with the elevation of the road surface at the end of the upper replacement 10 and the elevation surface of the ascending / 60 is located below the bottom of the end of the top turn 10.
In the span bridge where the upper bridge 10 of the bridge rotates horizontally about the center bridge bridge 20, a plurality of supports (not shown) having a horizontal rotation axis are provided on the upper surface of the end support 30, Wherein the roller 70 is installed so as to be in close contact with the bottom end surface of the upper replacement 10 and the extension of the rotation axis of the multiple support rollers 70 forms an intersection point with the rotation axis of the upper replacement 10.
It is possible to secure a sufficient rotational force while simplifying the rotating means of the upper bridge 10 of the sparkplug through the present invention and to stably and firmly support the upper replacement 10 regardless of whether it is rotating or stopped.
The end of the upper replacement 10 and the end support 30 can be formed in a linear shape instead of an arcuate shape through the ascending and descending member 60 which is moved up and down according to the state of the upper replacement 10, ) Can be freely applied.
In this way, it is possible to reliably operate the span bridge even with a simple structure, thereby reducing the construction cost of the span bridge and improving the connection stability between the upper span 10 and the end support 30, thereby improving the traffic stability.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will now be described in detail with reference to the accompanying drawings.
2 is a plan view and a side view showing the basic structure of the present invention. As shown in the figure, the present invention is a bridge bridge (bridge bridge) 10 in which a bridge bridge 10 is horizontally rotated about a center bridge bridge 20 And a rotary pipe 40 serving as a rotating device of the upper replacement 10 is installed on the upper part of the center pier 20 and the end support 30 supporting the opposite ends of the upper replacement 10 is provided with an upper end 10, And an elevator (60) connecting the bridge entrance road.
The upper replacement 10 in the present invention refers to a rotating structure of a bridge bridge, that is, a structure that rotates among bridges such as a girder, an upper plate, and an arch located above the bridge bridge 20, As shown in the figure, the bottom center portion of the upper replacement 10 is connected to the upper end of the center bridge 20 via the rotary pipe 40, and is supported and driven.
In the embodiment shown in FIG. 2, a span bridge in which a whole transverse section of a bridge body is rotated, that is, a bridge bridge 20 in which a central bridge bridge 20 is formed as a single bridge bridge in the center of a water body, A plurality of spans of three or more spans may be used. In this case, a portion of the entire bridges may be rotated. In this case, normally, both ends of the upper portion 10 are supported At least one of the end supports 30 is configured as a pier rather than an alternate.
As shown in the phantom line in the top plan view of FIG. 2, the shinkle of the present invention configured as described above is horizontally rotated as the rotary pipe 40 is driven, so that the ship can navigate through the corresponding water area.
3 shows the concrete rotation and support system of the upper replacement 10 and the structure of the connection between the upper replacement 10 and the bridge entry road in the present invention. As shown in the figure, the upper replacement 10 A rotary pipe 40 is installed at the center of the bottom surface to connect the upper replacement 10 and the center bridge 20 and the end support 30 supporting the end of the upper replacement 10 is normally provided with the elevator 60 So that the end structure of the end support body 30 is adjusted according to the state of the upper replacement body 10.
The rotary pipe 40 transmits the load of the upper replacement 10 including its own weight to the center bridge 20 so as to structurally support the upper replacement 10 and at the same time, 3 and is coupled to the upper surface of the base body 51 formed on the upper portion of the center bridge 20 as shown in FIG.
3 and 4, a concrete base body 51 is constructed on the upper end of the center bridge bridge 20 and a rotary pipe 40 is coupled to the upper portion of the base body 51. However, The body of the base body 51 is made of concrete and has a horizontal roller 41 and a vertical roller 42 mounted thereon, which will be described later, and a horizontal roller 41 and a vertical roller 42, A composite structure such as a steel plate embedded in the traveling path 53 and the vertical traveling path 54 may be applied.
5 and 6 are a partially cutaway perspective view and a representative cross-sectional view showing a state in which the rotary pipe 40 of the present invention is installed on the base body 51. As shown in the figure, in the shrinkage bridge of the present invention, The rotating tube 40 supporting and driving the rotating tube 40 is connected to the base body 51 constituted by a stepped structure and has a lower end opened. A plurality of horizontal rollers 41 and vertical rollers 42 mounted on the rotary pipe 40 have a structure running on the surface of the base body 51.
A projecting column 52 is formed at the center of the upper surface of the base body 51 rigidly fixed to the upper end of the center bridge bridge 20 so as to be fixed to the center bridge bridge 20 as shown in the lower cross- The protruded circumference 52 protruding upward from the central portion of the base body 51 is concentric with the protruding circumference 52 of the base body 51 and is formed in a stepwise manner on the side surface, A horizontal running path 53 and a vertical running path 54 are formed on the outer upper surface of the outer cylinder 52 and the outer circumferential surface of the projecting circumference 52, respectively.
The vertical runway 54 formed on the outer circumferential surface of the protruding circumference 52 and the horizontal runway 53 formed on the upper surface of the outer frame of the base body 51 are connected to the horizontal roller 53 mounted on the rotary pipe 40, Since the operation force including the self weight of the upper replacement 10 is transmitted irrespective of whether the upper rotation 10 is rotated or not while the upper rotation body 41 and the vertical roller 42 are always in contact with each other, In a manner such that they are embedded or adhered to each other.
4 to 6, a rotary pipe 40 is installed on the upper side of the base body 51 and the upper end of the pipe body is connected to the lower surface of the upper rotation unit 10. In the illustrated embodiment, A flange is formed on the upper outer periphery of the rotary tube 40 and a plurality of sections are joined to the upper surface so that the mechanical connection for fastening the high tension bolt between the upper tube 10 and the rotary tube 40 is possible. The upper end of the rotary pipe 40 may be embedded in the upper replacement 10 when the upper replacement 10 is applied.
5 and 6, a plurality of horizontal rollers 41 having horizontal rotation axes are radially mounted on the outer peripheral surface of the lower end of the rotary pipe 40, and vertical rollers 42 ) Many are also mounted radially.
A plurality of horizontal rollers 41 mounted on the outer circumferential surface of the rotary pipe 40 are arranged such that their rotational axes are arranged in an equiangularly radial fashion about the central axis of the rotary pipe 40, A single intersection is formed at the center of the rotary pipe 40, and the rotary pipe 40 plays a role of supporting a vertical load acting on the rotary pipe 40.
A plurality of vertical rollers 42 mounted on the inner circumferential surface of the rotary pipe 40 are arranged in a planar arrangement with an equiangular radial structure around the central axis of the rotary pipe 40, And is in parallel with the center axis of the pipe 40, and resists the horizontal force or the horizontal axis rotational force acting on the rotary pipe 40.
6, when the rotary pipe 40 is coupled to and mounted on the base body 51, the horizontal rollers 41 are connected to the horizontal runway (not shown) on the upper surface of the outer frame of the base body 51 53 and the vertical rollers 42 come into close contact with the vertical runways 54 on the outer circumferential surface of the projecting circumference 52 of the base body 51 so that the horizontal rollers 41 and the vertical rollers 42 are, (50) tightly coupled to the mold base (51) to strongly resist the rotational force that conducts the rotary pipe (40) as well as the vertical load acting on the rotary pipe (40) The horizontal rotation is freely guaranteed.
5 and 6, a pinion 55 which is rotated by a driving unit 58 is installed in the projecting circumference 52, and a pinion An annular rack 45 fitted to the pinion 55 is mounted and the rotary pipe 40 is rotated as the pinion 55 is rotated.
The annular rack 45 joined to the inner circumferential surface of the rotary pipe 40 is a gear having gear teeth formed on the inner circumferential surface of the annular body and is joined to the rotary pipe 40 so as to be concentric with the circumferential surface. As the pinion 55 engaged with the annular rack 45 is rotated by the drive unit 58, the annular rack 45 and the rotary pipe 40 joined thereto rotate.
Various motive power sources such as a hydraulic motor as well as an electric motor can be applied to the drive unit 58 for driving the pinion 55. In the illustrated embodiment, the drive unit 58 is connected to a worm 57 engaged with the pinion 55, Thereby reducing the required power.
That is, the worm 57 is attached to the drive unit 58 such as a motor and the worm 57 and the pinion 55 are connected to each other so that the pinion 55 behaves as a worm wheel. The rotation of the drive unit 58 is transmitted to the rotary pipe 40 via the pinion 55 and the annular rack 45 but the rotation force due to the external force acting on the rotary pipe 40 is not transmitted in the reverse direction Since the reverse rotation structure can be achieved, it is possible to stably drive and support a single layer of the rotary pipe 40.
6, when the driving unit 58 is operated, the annular rack 45 is rotated so that the rotary tube 40 rotates horizontally about the vertical central axis. At this time, the horizontal roller 41 and the vertical roller The rotating shaft 42 and the upper replacement shaft 10 can be smoothly rotated in a state in which the rotary tube 40 and the upper replacement shaft 10 are stably supported while traveling along the horizontal traveling path 53 and the vertical traveling path 54,
7, the end supporting body 30 supporting the end portion of the upper replacement 10 is normally provided with a recessed portion 35 in the end supporting body 30, as shown in the drawing. A lifting cylinder 65 is vertically extended and retracted in the recessed portion 35 and a lifting and lowering cylinder 65 is lifted and lowered as a rectangular enclosure at the upper end of the lifting cylinder 65, Body 60 is installed.
The side surface of the ascending / descending member 60, that is, the water side surface of the ascending / descending member 60, approaches the end of the upper replacing 10 when the ascending / descending member 60 is lifted, The upper surface of the ascending / descending body 60 is aligned with the road surface elevation of the end of the upper replacing 10 at the time of ascending and the upper end of the ascending and descending body 60 is positioned below the bottom of the end of the upper replacing 10 .
Therefore, when the shink of the present invention is connected to the bridge entry road to perform the function of the bridge in the normal state, the ascending / descending body 60 maintains the elevated state and the upper surface of the ascending / The upper surface of the upper end of the upper bridge 10 is smoothly connected with the lower end of the upper bridge 10 so that the upper end of the upper bridge 10 is smoothly connected to the upper bridge 10, Can be smoothly rotated even if they are formed in a linear shape without being formed into an arcuate shape.
A hydraulic cylinder such as a hydraulic cylinder may be used as the elevating cylinder 65 for driving the elevator 60 in the present invention. As in the left enlarged portion of FIG. 3 and the cut-away perspective view of the upper portion of FIG. 7, The rectangular lifting body 60 is formed of a hollow housing with the bottom opened so that the lifting cylinder 65 can be housed in the lifting body 60 when the lifting body 60 is lowered, The space for installing the elevator 60 can be reduced.
7, a plurality of support rollers 70 having a horizontal rotation axis are disposed on the upper surface of the end support 30 which normally supports the end of the upper turn 10, So as to ensure smooth driving while supporting the distal end of the upper replacement 10 at the time of starting the rotation of the upper replacement 10, The smooth rotation can be ensured while the rollers are rotated even when the end support body 30 is moved.
The upper replacement 10 which is moved in close contact with the plurality of support rollers 70 provided on the upper surface of the end support 30 in order to secure the activity of the upper replacement 10 via the support rollers 70 is supported by the support rollers 70 are moved in an arcuate path centering on the rotation axis of the upper replacement 10 instead of moving in a direction orthogonal to each other. In the case of simple parallel arrangement, an unnecessary slipping phenomenon may occur between the bottom end of the end portion of the upper replacement 10 and the outer peripheral surface of the support roller 70.
The slip phenomenon between the bottom end of the upper end 10 and the outer circumferential surface of the support roller 70 not only hinders the smooth rotation of the upper replacement 10 but also causes the abutment and breakage of the upper replacement 10 as well as the support roller 70 The extension of the rotation axis of the multiple support rollers 70 forms an intersection point with the rotation axis of the upper rotation shaft 10 so that a slip phenomenon between the support rollers 70 and the upper rotation shaft 10 So that it can be smoothly rotated.
7, the rotation axes of the support rollers 70 can be radially arranged around the rotation axis of the upper replacement 10 in a planar manner, So that the roller 70 can rotate smoothly.
