JP4378440B2 - Rotating device for bridge construction - Google Patents

Description

  The present invention is used when a bridge is installed between pre-built piers or between piers temporarily installed as temporary equipment, and supports the bridge so that the pier can rotate and rotates the bridge for erection. Relates to the device.

  In general, there are existing roads, railways, waterways, etc. in the space below the bridge planned to be built between the piers. In order to finish the suspension of use of these bridges in a short period of time, When erected, bridges may be erected by rotation. In this case, a bridge laying rotation device that supports a part of the bridge so that the pier can rotate is provided.

  2. Description of the Related Art Conventionally, as this type of bridge laying rotation device, for example, one described in Patent Document 1 (Japanese Patent Laid-Open No. 11-158814) is known.

As shown in FIG. 22, the bridge laying rotation device Sa is provided at the lower part of the pier 101 standing on the pier foundation block 100. The bridge laying rotation device Sa includes a shaft mechanism 104 that rotatably supports the pier 101 on the pier foundation block 100.
As shown in FIG. 23, the shaft mechanism 104 is in contact with the sliding plate 112, a shaft 111 protruding upward from the center of the pier foundation block 100, a sliding plate 112 made of a fluororesin plate or the like provided around the shaft 111, and the like. And a bottom plate 114 having a bearing portion 113 which is provided on the lower surface side of the pier 101 and engages with the shaft 111.

  The bridge laying rotation device Sa includes a tilt suppression mechanism 115 that suppresses tilting of the pier 101 with respect to the pier foundation block 100 when the pier 101 rotates. The tilt suppression mechanism 115 includes a base plate 110 provided around the upper portion of the pier foundation block 100 and an L-shaped sliding contact body 116 provided on the pier 101 and slidably contacting the back surface of the outer peripheral edge of the base plate 110. Configured. A bridge 102 is fixed to the upper part of the pier 101.

In order to construct the bridge 102 between the bridge piers 101 using this bridge construction rotating device Sa, the bridge pier foundation blocks 100 are constructed on both sides of the existing roads, railways, waterways, etc., and the top portions of the respective pier foundation blocks 100. The rotation mechanism Sa is installed, the pier 101 is constructed on the upper part of the rotation mechanism Sa, the bridge 102 is constructed using the vent 105, the gantry 103 is constructed on the opposite side of the bridge 102, and the counter is placed on the gantry 103. A weight 106 is installed.
In this state, the bridges 102 on both sides are rotated to join the ends of the bridges 102 together.
In this case, when the pier 101 tries to tilt with respect to the pier foundation block 100 during the rotation of the bridge 102, the pier 101 is supported by the base plate 110 by the sliding contact body 116, and the tilt is suppressed.
Thereafter, the rotation mechanism Sa is removed, and the pier foundation block 100 and the pier 101 are integrated.

JP-A-11-158814

  By the way, in such a bridge laying rotation device Sa, loads of the bridge pier 101, the bridge 102, and the like are received by the plane of the bottom plate 114 in contact with the sliding plate 112. Therefore, when the bridge 102 side tries to tilt, Due to the moment acting on the bridge 102, the bottom plate 114 is applied unevenly. Therefore, it becomes difficult to rotate the bridge 102, and the work efficiency of the rotation work of the bridge 102 may be deteriorated. It was.

  The present invention has been made in view of the above-described problems. Even when a load on the pier side is unevenly applied to the pier side during rotation of the bridge, the bridge can be rotated smoothly, and the work of rotating the bridge can be performed. An object of the present invention is to provide a rotating device for bridge construction with improved efficiency.

  In order to achieve such an object, the bridge laying rotation device of the present invention is designed for bridge erection in which the bridge is rotatably supported with respect to the pier when the bridge is erected between the piers, and the bridge is erected by rotation. A rotating device, the pier side base member provided on the pier side, the bridge side base member provided on the bridge side, and the bridge side base member provided between the base members with respect to the pier side base member A rotation mechanism for bridge construction comprising: a shaft mechanism that enables rotation; and a tilt suppression mechanism that suppresses tilting of the bridge-side base member when the bridge-side base member is rotated by the shaft mechanism. One member provided on one side of the pier-side base member and the bridge-side base member and having an end formed in a substantially hemispherical hemisphere, and the other of the pier-side base member and the bridge-side base member Provided on the end portion is configured with the other member formed in hemispherical recesses for receiving the slidably contact the hemisphere.

When using this bridge erection rotation device, a pier is constructed in advance using a crane or the like, and the bridge erection rotation device is provided on this pier. Then, the bridge is supported by the bridge pier via the bridge erection rotating device, and the bridge side base member is rotated in this state. As a result, in the shaft mechanism, the hemisphere of one member slides and rotates with respect to the recess of the other member about the central axis of the hemisphere.
At this time, the tilt of the bridge side base member is suppressed by the tilt suppression mechanism. In this case, even if the load on the bridge-side base member side is unevenly related to the pier-side base member, the hemisphere of one member is received by the concave hemispherical concave portion, so that the load dispersibility is Well, the load from the bridge side base member side can be uniformly received over almost the entire surface of the concave part of the other member, so there is almost no effect on the rotation of the bridge side base member, and the bridge side base member is intact. Thus, the rotation efficiency of the bridge-side base member can be improved.

Further, if necessary, a funnel-shaped through hole is provided at the center of the hemisphere of the one member along the central axis of the hemisphere so as to expand toward the surface of the hemisphere, and at the center of the recess of the other member. A rod that is loosely inserted into the through hole is provided along the central axis of the recess.
As a result, even if the bridge-side base member is excessively tilted, the rod abuts against the inner peripheral surface of the through hole, so that it is possible to prevent the hemisphere of one member from coming out of the recess of the other member.

Furthermore, it is set as the structure which provided the support mechanism which supports at least any one of the said one member and the other member so that a vertical movement is possible as needed.
In this case, before the bridge is rotated, at least one of the one member and the other member is moved upward by the support mechanism, and the bridge side base member is lifted with respect to the pier side base member. Therefore, the bridge pier side base member and the bridge side base member are not in contact with each other, so that the bridge can be smoothly rotated. After the bridge rotates, the bridge pier side base member and the bridge side base member can be coupled by returning at least one of the one member and the other member to the original position by the support mechanism.
Also, the height of the bridge can be adjusted by moving either one member or the other member up and down.

Furthermore, if necessary, the support mechanism is configured by a hydraulic drive jack including a piston and a cylinder, and the piston is configured by at least one of the one member and the other member.
Since at least one of the one member and the other member is configured as a piston, the bridge load from the shaft mechanism can be directly received, and the bridge-side base member can be efficiently supported.
In addition, when the piston is formed in a columnar shape and the axis of the piston and the central axis of the hemisphere and the recess are provided coaxially, a rotational force is generated in the piston due to friction when the hemisphere and the recess slide. In this case, since the piston can rotate with respect to the cylinder, the bridge-side base member can be smoothly rotated.

In addition, if necessary, the tilt suppression mechanism is provided on a guide rail provided along the outer periphery of the pier-side base member, and on a circumference around the rotation axis of the bridge-side base member on the bridge-side base member. And a plurality of movable bodies which are provided at equal intervals and are movable on the guide rail and which support the bridge-side base member with respect to the guide rail.
As a result, the bridge-side base member is supported by the guide rail via the plurality of moving bodies as well as the shaft mechanism. Therefore, during the rotation, the moving body moves on the guide rail while supporting the bridge-side base member, so that the tilting of the bridge-side base member is surely suppressed, the posture of the bridge-side base member is stabilized, and the bridge The side base member can be smoothly rotated, and the working efficiency of the rotating work can be improved.
Furthermore, since the guide rail is formed along the outer periphery of the base member, it does not take up much installation space, for example, compared to the case of using a carriage that moves while supporting the front end side of the bridge. This makes it less likely to affect existing roads, tracks, waterways, etc. between piers, and can stop the use of these in a short time.

Further, if necessary, the upper surface of the guide rail is formed into a flat surface, and the movable body is configured to include a sliding contact body having a flat surface that is in sliding contact with the upper surface of the guide rail.
The movable body rotates while the sliding contact body slides on the guide rail while the bridge-side base member rotates. Thereby, the moving body can move on the guide rail with a simple structure, and can rotate while stably supporting the bridge-side base member.

Further, the moving body is constituted by a hydraulic drive jack composed of a piston and a cylinder as required.
As a result, when the bridge-side base member tilts relative to the pier-side base member, the hydraulic pressure of the cylinder is increased and the piston of the hydraulically driven jack on the side to be tilted is advanced to control the posture of the bridge-side base member. can do. Therefore, the bridge-side base member is supported in a stable posture with respect to the pier-side base member, so that the bridge-side base member can be smoothly rotated and the work efficiency of the bridge-side base member rotation work is improved. Can be made.

Furthermore, if necessary, there are provided detection means for detecting the advance distance of the piston, and control means for controlling the hydraulic pressure of the cylinder of the hydraulic drive jack based on the detection of the detection means.
As a result, the piston of the hydraulic drive jack is advanced and retracted automatically by the control means even during rotation of the bridge-side base member, so that it can immediately respond to the bridge-side base member to be tilted. Can be rotated in a stable state, and the working efficiency of the rotating work can be improved.

Further, if necessary, a rotation drive mechanism for rotating the bridge side base member is provided, and the rotation drive mechanism can be detachably attached to the guide rail, and one end of the clamp portion can be rotated. A telescopic mechanism connected to the movable body at the other end so as to be rotatable, and extending or contracting when the clamp portion is clamped to move the movable body and returning to the original position when the clamp portion is released from the clamp. It is prepared and configured.
In order to rotate the bridge side base member using this rotation drive mechanism, the clamp part is operated to clamp the guide rail, and the expansion / contraction mechanism is expanded or contracted to move with the clamp part of one rotation drive mechanism. The body is moved away from or close to the body, and then the clamp part is released to return the expansion / contraction mechanism to the original position. Next, in the same manner as described above, the guide rail is clamped by the clamp portion, and the expansion / contraction mechanism is separated or brought close to each other. This is repeated and the bridge-side base member is rotated by a desired angle by the rotation drive mechanism.
Thereby, since the bridge side base member is rotated by the rotation drive mechanism, the bridge side base member can be easily rotated, and the working efficiency of the rotation work can be improved.

Further, if necessary, the expansion / contraction mechanism is constituted by a hydraulic drive jack composed of a piston and a cylinder.
Thereby, since the hydraulic drive jack is used for the expansion / contraction mechanism, the movable body and the clamp part can be separated or brought close to each other with a small simple structure, and the rotation can be easily performed.

Next, if necessary, the bridge side base member is movably supported with respect to the one member or the other member provided on the bridge side base member, and the bridge side base member is moved and locked at an appropriate position. The moving mechanism is provided.
Thereby, for example, after the bridge is rotated, the bridge-side base member can be moved in accordance with the bridge pier side where the bridge is installed, and the installation work can be easily performed.

Further, if necessary, a sliding contact plate is provided on the lower side of the bridge side base member, a reaction force material that is in sliding contact with the sliding contact plate is provided on one side of the bridge side base member side or the other member, and The moving mechanism includes a piston and a cylinder, and either one of the piston and the cylinder is fixed to the sliding contact plate, and the other is in contact with the reaction force material, and the sliding contact plate and the reaction force material are Are provided with a plurality of hydraulic drive jacks for relative movement.
When moving the bridge-side base member with respect to one member or the other member using this moving mechanism, the reaction force member is pressed against the reaction force member by pressing the reaction force member with the hydraulic drive jack of the movement mechanism. The support position by the reaction force material of the sliding contact plate is moved by sliding. Accordingly, the bridge-side base member can be freely moved in the plane direction orthogonal to the rotation axis by the advancement of the piston while being supported by the one member or the other member.

  According to the bridge erection rotating device of the present invention, the shaft mechanism is provided on one side of the pier side base member and the bridge side base member, and one end member is formed into a substantially hemispherical hemisphere, The bridge-side base member is provided with the other member formed on the other side of the bridge pier side base member and the bridge side base member and having the other end formed in a hemispherical recess whose end is slidably received by the hemisphere. Even if it tries to tilt, the load from the bridge side base member side can be distributed and received by the recesses of the other member, so that the rotation of the bridge side base member is hardly affected, and the bridge side base member is left as it is. Thus, the work efficiency of the rotation work of the bridge-side base member can be improved.

  Hereinafter, based on an accompanying drawing, a rotation device for bridge construction concerning an embodiment of the invention is explained in detail. This rotating device for bridge construction is mainly used when there are existing tracks, roads, waterways, etc. between bridge piers, and vents etc. for temporarily supporting the bridge cannot be installed under the bridge to be built. Used.

As shown in FIG. 1 to FIG. 3, when installing the bridge 4 between the piers 1 and 2, the bridge laying rotation device S rotatably supports the bridge 4 on the pier 1 and lays the bridge 4 by rotation. Is.
The pier 1 is formed in a cylindrical shape, and is erected on a portion of the foundation 3 driven into the ground.
The bridge 4 is composed of a plurality of bridge blocks 4a connected in the longitudinal direction. The bridge 4 is constructed by joining adjacent bridge blocks 4a in a state where the bridge block 4a is temporarily supported by the vent 5 before the rotation.

  The basic construction of the bridge erection rotating device S is as follows. The bridge pier side base member 10 provided at the upper part of the pier 1, the bridge side base member 20 provided at the lower part of the bridge 4, and the bridge side base provided between the base members. A shaft mechanism 30 that enables the member 20 to rotate with respect to the pier-side base member 10 and a tilt suppression mechanism 50 that suppresses tilting of the bridge-side base member 20 when the bridge-side base member 20 is rotated by the shaft mechanism 30 are provided. It becomes.

The pier side base member 10 includes a cylindrical body 11 formed integrally with the pier 1 and an attachment member 12 provided inside the cylindrical body 11 to which the shaft mechanism 30 is attached.
The mounting member 12 includes a base member 13 that is welded and fixed to the inner wall of the cylindrical body 11 at four locations on two straight lines passing through the center of the cylindrical body 11 and orthogonal to each other. And a cross-shaped receiving beam 14 fixed with bolts and nuts via a thickness adjusting member 15.

The bridge-side base member 20 is joined to the bridge block 4 a and becomes a bridge base member 21 that becomes a part of the bridge 4. The bridge-side base member 20 is suspended from the lower surface of the bridge base member 21 and has the same diameter as the pier-side base member 10. A cylindrical body 22 made of metal and a sliding contact plate 23 provided inside the cylindrical body 22 and placed on a reaction force member 38 of the shaft mechanism 30 described later are provided. As shown in FIGS. 4 and 5, the bridge base member 21 is provided with a recess 24 having a circular cross section in which an entrance / exit 24 a communicating with the inside of the cylindrical body 22 is formed at the bottom.
As shown in FIGS. 1 to 3 and 6, the slidable contact plate 23 is formed in a cross shape whose center is centered on the axis of the cylindrical body 22. The sliding contact plate 23 is fixed to the bridge base member 21 and the cylindrical body 22 via the sliding contact plate mounting portion 25. The sliding contact plate mounting portion 25 includes a pair of rectangular plates 26 parallel to each other in the axial direction on the inner surface of the cylindrical body 22, and a pair of parallel plate members 27 provided between the pair of plates. It is equipped with. The plate member 26 and the plate member 27 are provided in a cross beam shape, and the upper end edge thereof is joined to the lower surface of the bridge base member 21. The plate member 27 is provided with a rib member 28 that protrudes outward from the center thereof. Further, a notch 29 is provided in the upper center of the plate member 27 at a position corresponding to the entrance / exit 24a.

  As shown in FIGS. 1, 7, and 8, the shaft mechanism 30 is formed in a hemispherical body 32 that is provided on one side of the pier-side base member 10 and the bridge-side base member 20 and has an almost hemispherical end. One member 31 formed on the other side of the pier side base member 10 and the bridge side base member 20 and the other member 33 formed on a hemispherical recess 34 whose end portion receives the hemispherical body 32 so as to be slidable. And is configured. In the embodiment, the shaft mechanism 30 is provided with one member 31 on the bridge side base member 20 side and the other member 33 on the bridge pier side base member 10 side.

On the other hand, the member 31 has a hemisphere 32 formed on the lower surface of a rectangular plate 35. In addition, a funnel-shaped through hole 36 is provided at the center of the hemisphere 32 of the one member 31 so as to expand toward the surface of the hemisphere 32 along the central axis of the hemisphere 32. The through hole 36 is provided on the plate body 35 side and communicates with a storage portion 37 in which a head of a rod 43 described later is stored.
The one member 31 includes a reaction material 38 that is in sliding contact with the sliding contact plate 23 on the upper side of the plate body. The reaction force member 38 is formed in a rectangular parallelepiped shape having a square cross section by a square upper plate 39, a lower plate 40 having the same shape as the upper plate 39, and a support member 41 that supports the upper plate 39 with respect to the lower plate 40. Is formed. The upper plate 39 is detachably coupled to the sliding contact plate 23 using bolts and nuts. The lower plate 40 is detachably coupled to the plate body 35 of the one member 31.

In the recess 34 of the other member 33, a sliding member 42 for a high pressure surface is attached to reduce the friction with the hemisphere 32 (the hemisphere 32 has, for example, a hard chrome on a surface called S54C. The sliding member is made of, for example, PTFE (fluorine resin), etc. The sliding friction coefficient between the hemisphere 32 and the sliding member 42 is μ. = 0.05).
Further, a rod 43 that is loosely inserted into the through hole 36 along the central axis of the recess 34 is provided at the center of the recess 34 of the other member 33. The rod 43 is constituted by a bolt having a male screw whose tip is screwed into a female screw portion 44 provided in the center of the recess 34.

Further, a support mechanism 45 that supports at least one of the one member 31 and the other member 33 so as to be vertically movable is provided. In the embodiment, the support mechanism 45 is constituted by a hydraulic drive jack including a piston 46 and a cylinder 47. The piston of the support mechanism 45 is constituted by the other member 33 itself. The hydraulic drive jack of the support mechanism 45 is driven by oil from a pump 77 connected to the cylinder 47 as shown in FIG.
The other member 33, which is the piston 46 of the support mechanism 45, has a lower end formed in a columnar shape and is rotatable with respect to the cylinder 47. The piston 46 of the support mechanism 45 is formed so that its axis is coaxial with the central axis of the recess 34. The cylinder 47 of the support mechanism 45 is detachably attached to the center of the receiving beam 14 with bolts and nuts. A piston 46 of the support mechanism 45 is inserted into the cylinder 47 of the support mechanism 45 so as to be rotatable about the axis of the piston 46.

  As shown in FIGS. 1, 7, and 8 to 12, the tilt prevention mechanism 50 includes a guide rail 51 provided along the outer periphery of the pier side base member 10, and the bridge side base member 20 and the bridge side base member 20. A plurality of movable bodies 60 that support the bridge-side base member 20 with respect to the guide rail 51 are provided so as to be movable on the guide rail 51 at equal intervals on the circumference around the rotation axis.

  The guide rail 51 includes a donut-shaped upper flange 52 coaxial with the axis of the cylindrical body 11 of the pier-side base member 10, a lower flange 53 having the same shape as the upper flange 52, and an upper flange 52 with respect to the lower flange 53. The cylindrical inner web 54 a is supported, the cylindrical outer web 54 b provided coaxially with the inner web 54 a, and the stainless steel plate 55 placed on the upper surface of the upper flange 52. The lower flange 53 is coupled to the pier side base member 10 via a bottom reaction force bracket 57. The bottom reaction force bracket 57 is detachably coupled to the guide rail 51 and the pier side base member 10 by bolts and nuts.

The moving body 60 is provided between the guide rail 51 and the upper bracket 61 provided outside the cylindrical body 22 of the bridge side base member 20, and supports the bridge side base member 20 via the upper bracket 61. In the embodiment, the moving body 60 and the upper bracket 61 are provided at six positions every 60 degrees around the axis of the cylindrical body 22.
The moving body 60 is configured by a hydraulic drive jack including a piston 71 and a cylinder 72. The hydraulic drive jack of the moving body 60 is driven by oil from a pump 77 connected to a cylinder 72 as shown in FIG.
Further, a sliding contact body 73 having a flat surface for sliding contact with the stainless steel plate 55 of the guide rail 51 is provided below the cylinder 72 of the moving body 60. The sliding contact body 73 is made of a fluororesin plate (the sliding friction coefficient between the stainless steel plate 55 and the fluororesin plate is μ = 0.10).

The upper bracket 61 has a mounting portion 62 formed in an arc shape along the outer side of the cylindrical body 22, and a plane provided at the lower end of the mounting portion 62 and orthogonal to the axis of the cylindrical body 22. Is provided with a pressed plate 63 that is pressed by the piston 71 and a reinforcing portion 64 that reinforces the pressed plate 63 against the mounting portion 62. The attachment portion 62 is detachably attached to the cylindrical body 22 with bolts and nuts.
The piston 71 is in contact with the plane of the pressed plate 63. Further, a holding member 65 is provided on the plane of the pressed plate 63 so as to stand on the plane and cover the moving body 60 and hold the moving body 60. The holding member 65 includes a pair of plate-like bodies 66 formed in an arc shape along the outer shape of the cylinder 72 of the hydraulic drive jack of the moving body 60.

Further, in the bridge laying rotation device S, a detection unit that detects a load related to the moving body 60 and an advance distance of the piston 71 of the moving body 60 and a hydraulic drive jack of the moving body 60 are controlled based on the detection by the detecting means. And a control means is provided.
The detection means includes, for example, a hydraulic pressure detection sensor 75 that detects the hydraulic pressure applied to the support mechanism 45 and the cylinder 72 of each moving body 60, and a linear encoder 76 that measures the advance distance of the piston 71. The detection means includes a hydraulic pressure detection sensor 75 a related to the cylinder 47 of the support mechanism 45 and a linear encoder 76 a that measures the advance distance of the piston 46 of the support mechanism 45.

As shown in FIGS. 9 to 11, the linear encoder 76 includes a main body 67 provided on each upper bracket 61, a wire 69 wound on one end of the main body 67, and a wire for fixing the other end of the wire 69 to the cylinder side. And a fixing member 68. The linear encoder 76 measures the advance distance h of the piston 71 by counting the distance that the wire 69 is pulled out in the main body 67.
The linear encoder 76a is configured in the same manner as the linear encoder 76, and the attachment state is not shown, but the main body is attached to the cylinder 46 side, and the wire fixing member is attached to the cylinder 47 side.

Furthermore, the control means includes a hydraulic control panel 78 (called a so-called hydraulic control panel) interposed between the cylinders 47 and 72 and the pump 77, hydraulic detection sensors 75 and 75a as detection means, and a linear encoder 76. , 76 a, and a control unit 79 (so-called control operation panel) for controlling the oil pressure from the pump 77 by controlling the hydraulic control panel 78.
The hydraulic control panel 78 includes an input port 59a to which oil from the pump 77 is input, and four output ports 59b and 59c that output the oil with different oil pressures. One of the four output ports (59b) is connected to a pipe 58a connected to the cylinder 46. Further, each of the remaining three output ports (59c) is connected to the cylinders 72 of the two adjacent moving bodies 60, and the two branches 72 branch so that the same hydraulic pressure is applied. A tube 58 is connected.

  The control unit 79 preliminarily sets the set value A of the force applied to the bridge side base member 20 side by the piston 46 of the hydraulic drive jack of the support mechanism 45, and the bridge side base member by the piston 71 of the hydraulic drive jack of each moving body 60. The set value B of the force applied to the 20 side can be set. The relationship between the force A and the force B and the load F above the bridge-side base member 20 is set to be a load F = A + 6 × B (in the embodiment, A: 6 × B = 80). To 90: 10-20).

In the control unit 79, an allowable range value A ± α is set for the set value A, and an allowable range value B ± β is set for the set value B.
Then, the control unit 79 compares the force f ₁ applied from the piston 46 of the hydraulic drive jack of the support mechanism 45 calculated from the hydraulic pressure detected by the hydraulic pressure detection sensor 75a with the allowable range value A ± α, and the hydraulic control panel The hydraulic pressure of the cylinder 47 is controlled via 78. Further, the force f ₂ applied from the piston 71 of the hydraulic drive jack of the moving body 60 calculated from the hydraulic pressure detected by the hydraulic pressure detection sensor 75 is compared with the allowable range value B ± β, and the cylinder is set via the hydraulic control panel 78. 72 is controlled.
Details will be described in the operation section.

  Further, the control unit 79 determines the advance distance h (h1) detected by the linear encoder 76 of the piston 71 of the hydraulically driven jack of one of the two moving bodies 60 to which the same pipe 58 is connected, and the other. When the absolute value of the difference in advance distance h (h2) exceeds the allowable value γ by the linear encoder 76 of the piston 71 of the hydraulically driven jack of the movable body 60, the entire apparatus is temporarily stopped.

As shown in FIGS. 7 and 13, the bridge laying rotation device S is provided with a rotation drive mechanism 80 that rotates the bridge-side base member 20. The rotation drive mechanism 80 includes a clamp part 81 that can be detachably attached to the guide rail 51, one end rotatably connected to the clamp part 81, and the other end rotatably connected to the moving body 60. The movable body 60 is moved by being expanded or contracted at the time of clamping, and an expansion / contraction mechanism 82 that returns to the original position when the clamp 81 is released from the clamp is provided. In the embodiment, the rotational drive mechanism 80 is arranged in two points symmetrically about the axis of the cylindrical body 22 of the bridge-side base member 20.
The clamp portion 81 is configured by a clamp that sandwiches the upper flange 52 from above and below on the inner periphery and the outer periphery of the upper flange 52. The clamp part 81 is hydraulically driven by a hydraulic pump (not shown). Control of clamping and releasing of the clamp unit 81 is performed by the control unit 79. Further, when the clamp 81 is released from the clamp, the guide rail 51 can be moved along the guide rail 51.

The expansion / contraction mechanism 82 is configured by a hydraulic drive jack including a piston 84 and a cylinder 85.
The hydraulic drive jack of the telescopic mechanism 82 is provided with a clevis 86 at one end and the other end. The clevis 86 is pivotally connected to the upper bracket 61 and the clamp portion 81 by inserting a pin 88 together with the clevis fitting 87 provided on the upper bracket 61 to which the movable body 60 is attached and the clamp portion 81. Is done. The hydraulic drive jack of the telescopic mechanism 82 is operated by supplying oil from a hydraulic pump (not shown).
Although not shown, the hydraulic drive jack of the telescopic mechanism 82 is driven by the control unit 79 by controlling the hydraulic pressure from the hydraulic pump.

As shown in FIGS. 1, 7, and 8, the bridge-side base member 20 is movably supported with respect to one member 31 or the other member 33 provided on the bridge-side base member 20, and the bridge-side base member 20 is supported. A moving mechanism 90 that is moved and locked at an appropriate position is provided.
The moving mechanism 90 includes a piston 91 and a cylinder 92, and either one of the piston 91 or the cylinder 92 is fixed to the sliding contact plate 23, and the other is in contact with the reaction force material 38, and the sliding contact plate is moved forward and backward by the piston 92. 23 and a plurality of hydraulic drive jacks 90a for moving the reaction force member 38 relative to each other. The hydraulic drive jack 90a of the moving mechanism 90 is detachably attached to the slidable contact plate 23 via a moving mechanism reaction force bracket 93 provided on the cylinder side at the lower end of the slidable contact plate 23, respectively. It has been. The hydraulic drive jack 90a is arranged in a cross so that the pistons 91 face each other.
Then, as shown in FIG. 10, the four hydraulic drive jacks 90a are interlocked with the opposing hydraulic drive jacks 90a by the manual pump 95, and the piston 91 is moved forward and backward. When the manual pump 95 advances the piston 91 of one hydraulic drive jack 90a among the hydraulic drive jacks 90a facing each other, the piston of the other hydraulic drive jack 90a is retracted, and the piston 91 of one hydraulic drive jack 90a is retracted. Then, the piston 91 of the other hydraulic drive jack 90a is advanced.

  Therefore, as shown in FIG. 1 to FIG. 3, in order to construct the bridge 4 between the piers 1 and 2 using this bridge construction rotating device S, first, the foundations 3 of the piers 1 and 2 are placed on both sides of the track. The piers 1 and 2 are erected on the foundation 3 by driving in and using a crane or the like. Next, a scaffold (not shown) is provided on the upper portion of one bridge 1 of the bridge piers 1 and 2, and a bridge erection rotating device S is installed using a crane and a scaffold.

At this time, on the upper part of the bridge pier 1, the receiving beam 14 is constructed inside the cylindrical body 11 and the pier side base member 10 is provided, and the support mechanism 45 and the shaft mechanism 30 are attached to the center of the receiving beam 14. Further, the bottom reaction force bracket 57 is attached to the pier side base member 10 on the outer periphery of the pier side base member 10, and the guide rail 51 is attached to the pier side base member 10.
Next, the upper bracket 61 and the moving body 60 are attached to the cylindrical body 22 of the bridge-side base member 20, and the bridge-side base member 20 is suspended by a crane in a state where the moving body 60 is attached to the sliding contact plate 23. And provided at the top of the pier 1.

Further, the bridge 4 is constructed on one pier 1 provided with the bridge erection rotating device S.
At this time, the bridge 4 joins the bridge base member 21 of the bridge-side base member 20 and the adjacent bridge block 4a by welding or the like in a state where the bridge block 4a is supported by a vent 5 provided in advance. In order to balance the weight on the bridge 4 side, a so-called counterweight 99 is placed on a gantry 98 provided on the base end side of the bridge 4. Further, after the bridge 4 provided on the upper portion of the one pier 1 is rotated, the tip end portion of the bridge 4 is engaged with the upper portion of the other pier 2, and another bridge base member 9 that becomes a part of the bridge 4 is provided. Provide.

Then, the bridge 4 is rotated. In this case, the support mechanism 45 and the tilt suppression mechanism 50 are adjusted prior to the rotation. This adjustment will be described as follows according to the flowchart shown in FIG.
First, the guide rail 51 is clamped by the clamp part 81 (1-1). When the clamping of the clamp part 81 is completed (1-2), the control part 79 is based on the detection of the hydraulic pressure detection sensor 75 and the linear encoder 76 of the detection means related to the hydraulic drive jacks of the support mechanism 45 and the tilt suppression mechanism 50. Then, the hydraulic pressure of the oil from the pump 77 is controlled by the hydraulic control panel 78, the pistons 46 and 71 of the hydraulic drive jack of the support mechanism 45 and the hydraulic drive jack of the moving body 60 are advanced, and the bridge side base member 20 is moved to the pier side. It floats with respect to the base member 10 (1-3).
At this time, the control unit 79 detects that the force f ₁ applied from the piston 46 to the bridge-side base member 20 side is the set value A by the detection of the hydraulic pressure detection sensor 75a that detects the load of the cylinder 47 of the hydraulic drive jack of the support mechanism 45. Then, the oil from the hydraulic control panel 78 is controlled. In addition, the control unit 79 detects that the force f ₂ applied from the piston 71 to the bridge-side base member 20 side is set to the set value B by the detection of the oil pressure detection sensor 75 that detects the load of the cylinder 72 of the hydraulic drive jack of the moving body 60. Thus, the oil from the hydraulic control panel 78 is controlled.
At this time, if there is any abnormality in the hydraulic drive jacks of the support mechanism 45 and the moving body 60 such that the linear encoders 76 and 76a cannot detect the advance of the pistons 46 and 71, the apparatus is stopped (1-4N, 1- 10).

Further, if the bridges 4 are released away from the vent 5 by the advancement of the pistons 46 and 71 of these hydraulic drive jacks (1-5Y), the hydraulic pressure of the cylinder of each hydraulic drive jack is at a normal value. Is detected by the oil pressure detection sensors 75 and 75a (1-6), and when it is different from the normal value, the apparatus is stopped (1-6N, 1-10).
Further, when adjustment of each hydraulic drive jack is required (1-7Y), such as when the bridge-side base member 20 is too small or too large with respect to the pier-side base member 10, the set values A and B of the control unit 79 are set. Change or manually adjust each hydraulic drive jack (1-8, 1-9).

Next, the bridge 4 is rotated. Referring to the flowchart shown in FIG. 17, when preparation for rotating the bridge 4 is completed (2-1), the rotational drive mechanism 80 drives the bridge 4 to rotate as follows.
In the rotational drive, as shown in FIG. 18A, only the clamp portion 81 of one of the two rotational drive mechanisms 80 (80a) is operated to clamp the guide rail 51 (2 -2, 2-3), the clamp part 81 of the other rotational drive mechanism 80 (80b) is deactivated, and the clamp of the guide rail 51 is released, and in this state, the hydraulic drive of one rotational drive mechanism 80 is performed. The jack is driven to retract the piston 84 (2-4, 2-11N), and the clamp portion 81 of the one rotational drive mechanism 80 and the moving body 60 are brought closer to each other.

  Next, as shown in FIG. 18B, when the piston 84 of the hydraulic drive jack of one rotational drive mechanism 80 (80a) is retracted to the limit (2-11Y), the rotational drive mechanism 80 (80a) The clamp part 81 is deactivated to release the clamp of the guide rail 51 (2-12, 2-13), the clamp part 81 of the other rotational drive mechanism 80 (80b) is operated to clamp the guide rail 51, In this state, the hydraulic drive jack of the other rotational drive mechanism 80 (80b) is driven to retract the piston 84, and the clamp part 81 of the other rotational drive mechanism 80 (80b) and the moving body 60 are brought close to each other. Then, the piston 82 of the hydraulic drive jack of one of the rotary drive mechanisms 80 (80a) is returned to the original position to relatively separate the clamp portion 81 and the moving body 60 (2-14, -15).

Next, as shown in FIG. 18C, the clamp portion 81 of the other rotation drive mechanism 80 (80a) is deactivated to release the clamp of the guide rail 51, and one rotation drive mechanism 80 (80a) is released. In this state, the hydraulic drive jack of one rotary drive mechanism 80 (80a) is driven, and the clamp part 81 of one rotary drive mechanism 80 (80a) While moving the moving body 60 close, the piston of the hydraulic drive jack of the other rotary drive mechanism 80 (80b) is returned to the original position, and the clamp part 81 and the moving body 60 are relatively separated.
As described above, the hydraulic drive jacks of the one and the other rotational drive mechanism 80 are alternately rotated a plurality of times, and the bridge-side base member 20 is rotated by a desired angle around the central axis of the shaft mechanism 30. (2-10), and the rotation drive mechanism 80 is stopped. In the embodiment, the hydraulic drive jack of the rotary drive mechanism 80 is designed to rotate the bridge-side base member 20 by about 9 degrees by driving once, and the hydraulic drive jack of the rotary drive mechanism 80 is alternately arranged. Were driven 5 times each, 10 times in total, and rotated 90 degrees (FIG. 18 (d)).

  At this time, in the shaft mechanism 30, the hemispherical body 32 of the one member 31 rotates with the central axis of the hemispherical body 32 as an axis while sliding with respect to the concave portion 34 of the other member 33. When the bridge-side base member 20 tries to tilt during this rotation, the one member 31 tries to tilt following this, but the hemisphere 32 of the one member 31 is received by the concave hemispherical recess 34. Therefore, the dispersibility of the load is good, and the load from the bridge-side base member 20 side can be received uniformly over substantially the entire surface of the recess 34 of the other member 33. As a result, even if the bridge-side base member 20 is tilted, the rotation of the bridge-side base member 20 can be performed as it is with little influence on the rotation of the bridge-side base member 20, and the bridge-side base member 20 can be rotated as it is. The working efficiency of the rotating work can be improved.

  At this time, the other member 33, which is the piston 46 of the support mechanism 45, receives a rotational force around the central axis of the recess 34 due to friction generated between the hemisphere 32 and the recess 34 generated by the rotation of the one member 31. As a result, the other member 33 also rotates with respect to the cylinder 47 of the support mechanism 45. Therefore, since not only the shaft mechanism 30 but also the piston 46 of the support mechanism 45 rotates with respect to the cylinder 47, the bridge-side base member 20 can be further smoothly rotated.

During the rotation drive by the rotation drive mechanism 80, the tilt suppression mechanism 50 suppresses the tilt of the bridge side base member 20 relative to the pier side base member 10 (2-6). This tilting occurs, for example, when the surface of the guide rail 51 is uneven to some extent and uneven.
The tilt suppression mechanism 50 is controlled by the control unit 79, and specifically, for example, as described below according to the flowchart shown in FIG.
For example, when the guide rail 51 is slightly concave, the control unit 79 causes the pressed plate 63 of the upper bracket 61 and the guide rail 51 to be separated, and f ₂ <B is detected by the hydraulic pressure detection sensor 75. when became -β is (3-1Y), pressure increase predetermined amount the hydraulic pressure in the cylinder 72 and the oil pressure sensor 75 tubes 58 provided by applying increased a predetermined amount, the piston to increase the force f ₂ 71 is advanced (3-2).
Further, for example, the guide rail 51 is slightly convex so that the pressed plate 63 of the upper bracket 61 and the guide rail 51 are close to each other, and B + β <f ₂ is detected by the hydraulic pressure detection sensor 75. If (3-1N, 3-3Y), the hydraulic pressure detection sensor 75 tube 58 provided with a predetermined amount under reduced pressure to reduced pressure a predetermined amount of hydraulic pressure in the cylinder 72, the piston 71 and reduce the force _{f 2} (3-4).
Furthermore, the force _{f 2} from the hydraulic power jack piston 71 of the moving body _{60, B-β ≦ f 2 ≦} B + when a β (3-1N, 3-3N), to maintain the hydraulic pressure in the cylinder 72 (3 -5).

In addition, when the bridge-side base member 20 is slightly tilted by the control of the hydraulic drive jack of the moving body 60 described above, when f ₁ <A−α is detected by the hydraulic pressure detection sensor 75a. (3-6Y), the hydraulic pressure of the hydraulic sensor 75a is provided tube 58a pressed up a predetermined amount pressure increase predetermined amount of hydraulic pressure in the cylinder 47, thereby advancing the piston by increasing the force _{f 1} (3-7 ). On the other hand, when A + α <f ₁ is detected by the oil pressure detection sensor 75a (3-6N, 3-8Y), the oil pressure in the pipe 47a provided with the oil pressure detection sensor 75a is reduced by a predetermined amount to reduce the oil pressure in the cylinder 47. the predetermined amount reduced pressure and reduce the force _{f 1} retracts the piston 46 (3-9). When the force f ₁ applied from the piston 46 of the hydraulic drive jack of the support mechanism 45 is A−α ≦ f ₁ ≦ A + α (3-6N, 3-8N), the hydraulic pressure in the cylinder 47 is maintained ( 3-10).
Then, the control of the moving body 60 and the support mechanism 45 is repeated so that the force f ₂ becomes B−β ≦ f ₂ ≦ B + β and the force f ₁ becomes A−α ≦ f ₁ ≦ A + α (3-11). ).

That is, each time the bridge-side base member 20 is tilted with respect to the pier-side base member 10, the hydraulic pressure of the cylinders 47 and 75 is increased or decreased, and the piston 71 of the hydraulically driven jack is advanced or retracted. The bridge-side base member 20 is supported in a stable posture with respect to the pier-side base member 10 because the tilting of the bridge-side base member 20 is suppressed so that a substantially equal load is applied to the hydraulic drive jacks of the respective moving bodies 60. Is done. Therefore, the bridge side base member 20 can be smoothly rotated, and the work efficiency of the rotation work of the bridge side base member 20 can be improved.
Further, the advancement and retraction of the pistons 46 and 71 of the hydraulic drive jack of the support mechanism 45 and the moving body 60 are automatically performed by the control means even during rotation, so that the bridge side base member 20 to be tilted can be dealt with immediately. The bridge-side base member 20 can be rotated in a stable state, and the working efficiency of the rotating work can be improved.

At this time, the moving body 60 moves while the sliding contact body 73 slides on the guide rail 51 in a state where the bridge side base member 20 is supported by the guide rail 51. The member 20 can be rotated while being stably supported.
Furthermore, since the guide rail 51 is formed along the outer periphery of the pier side base member 10, for example, the guide rail 51 is installed less than the case where a carriage that moves while supporting the tip end side of the bridge 4 is used. Space is not taken, and it becomes difficult to affect the existing roads, railways, waterways, etc. between the piers 1 and 2, and the suspension of use can be completed in a short time.

  Further, during the rotation of the bridge 4, if there is an abnormality such as a malfunction in the hydraulic drive jack itself of the shaft mechanism 40, the support mechanism 45, and the telescopic mechanism 82, the apparatus is stopped (2-5N, 2-8). . In addition, when the hydraulic drive jacks of the moving bodies 60 are controlled, the same hydraulic pressure is applied to the cylinders 72 of the hydraulic drive jacks of the two adjacent mobile bodies 60. Of these, it is assumed that the advance distance h1 of the piston 71 of one hydraulic drive jack and the advance distance h2 of the piston 71 of the other hydraulic drive jack are extremely different. When | h1-h2 |> γ is satisfied (2-7N), the apparatus is stopped. Thereafter, each oil pressure detection sensor is manually adjusted (2-8), and the rotation is resumed in the same manner as described above after restoration.

Next, after the rotation is completed, according to the flowchart shown in FIG. 20, the tip of the rotated bridge 4 and the bridge base member 9 provided on the upper portion of the other pier 1 are engaged to couple them.
At this time, if the tip of the bridge 4 is displaced with respect to the bridge base member 9 and cannot be engaged well, the position of the bridge 4 in the plane direction perpendicular to the rotation axis is adjusted by the moving mechanism 90. In addition, the height position is adjusted by the support mechanism 45 and the moving body 60 (4-1Y).

When adjusting the position in the plane direction orthogonal to the rotation axis, the bolts and nuts connecting the reaction force member 38 and the sliding contact plate 23 are removed, and the manual pump 95 is operated to adjust the hydraulic drive jack 90a of the moving mechanism 90. The reaction force member 38 is pressed by the piston 91, the sliding contact plate 23 is slid with respect to the reaction force member 38, and the support position of the sliding contact plate 23 by the reaction force member 38 is moved (4-2). Therefore, the bridge-side base member 20 can be moved relative to the one member 31 by the advancement of the piston 91 in a state in which the bridge-side base member 20 is supported by the shaft mechanism 30 in the plane direction orthogonal to the rotation axis. As a result, the position of the bridge 4 can be adjusted in the plane direction orthogonal to the rotation axis, the tip of the bridge 4 and the bridge base member 21 can be engaged, and the bridge 4 can be stably installed on the two piers 1. Can be made.
When the height position is adjusted, the cylinder 47 of the hydraulic drive jack of the support mechanism 45 and the cylinder 72 of the hydraulic drive jack of the moving body 60 are increased or reduced, and the pistons 46 and 71 are advanced or retracted ( 4-3).
Such position adjustment in the position adjustment plane direction and height position adjustment are repeated until there is no deviation with respect to the bridge base member 9 at the end of the bridge 4 (4-4N).

When the position adjustment is not necessary (4-1N) or after the position adjustment is completed (4-4Y), the front end of the bridge 4 and the bridge base member 9 are engaged (4-5). This engagement is performed manually by providing a scaffold (not shown) near the tip of the bridge 4 and the bridge base member 9.
Next, the hydraulic pressures of the cylinder 47 of the hydraulic drive jack of the support mechanism 45 and the cylinder 72 of the hydraulic drive jack of the moving body 60 are reduced by a predetermined amount, and the pistons 46 and 71 are moved backward (4-6). At this time, if these hydraulic drive jacks are abnormal, the decompression of the cylinders 47 and 72 is stopped (4-8), and the hydraulic drive jacks are adjusted manually (4-9). Then, the support of the bridge-side base member 20 of the shaft mechanism 30, the support mechanism 45, and the moving body 60 is released (4-10). Then, the cylindrical body 11 of the pier side base member 10 and the cylindrical body 22 of the bridge side base member 20 are joined to each other by welding or the like.

Next, as shown in FIGS. 1 and 21, the moving mechanism 90, the shaft mechanism 30, and the support mechanism 45 are removed from the pier side base member 10 and the bridge side base member 20, and the cylindrical body 22 of the bridge side base member 20 is removed. Take these out from the top hole. At this time, the other member 33, which is the piston 42 of the hydraulic drive jack of the support mechanism 45, is retracted to create a gap between the reaction force member 38 and the sliding contact plate 23. Next, the hydraulic drive jack of the moving mechanism 90, the moving mechanism reaction force bracket 93, the reaction force member 38, the shaft mechanism 30, and the support mechanism 45 are sequentially removed. Further, the tilt suppression mechanism 50 is removed from the pier side base member 10 and the bridge side base member 20.
Then, concrete is filled into the inside of the cylindrical body 11 of the pier 1 and the pier side base member 10 and the cylindrical body 22 of the bridge side base member 20.
Then, as shown in FIG. 2, the piers 1 and 2 constructed in this way and a plurality of bridges 4 constructed between the piers 1 and 2 are installed in the same manner. The bridge main body 6 that can pass through is constructed to construct a viaduct.

In the embodiment of the present invention, two rotation drive mechanisms 80 are provided, but the present invention is not limited to this, and there may be one or three or more.
In the embodiment of the present invention, six moving bodies 60 are provided. However, the present invention is not limited to this, and any number of three or more moving bodies 60 may be provided.
In the embodiment of the present invention, the relationship between the setting value A and the setting value B is set to A: 6 × B = 80 to 90:10 to 20, but the present invention is not limited to this. For example, A: 6 × B = 0: 100 may be used, and the setting may be changed.

In the embodiment of the present invention, the bridge laying rotation device S has been described for the case where a bridge body is constructed on the bridge 4 to construct a viaduct. However, the present invention is not limited to this. 4 itself may be used for a road or a bridge body serving as a railroad where people and vehicles pass.
In the above embodiment, the pier side base member 10 includes the cylindrical body 11 and the bridge side base member 20 includes the cylindrical body 22. However, these shapes are limited to the cylindrical shape. The shape may be other shapes as long as it is cylindrical, and for example, the cross-section may be appropriately changed to a polygonal shape such as a triangle or a quadrangle.
Further, the pier 1, the bridge 4, the pier side base member 10, the bridge side base member 20 and the like are made of metal, but are not limited to this, for example, steel materials, reinforced concrete, prestressed concrete, etc. Of course, the design can be changed as appropriate.

It is a longitudinal cross-sectional view which shows the rotation apparatus for bridge construction which concerns on embodiment of this invention. It is a perspective view which shows the rotation apparatus for bridge construction which concerns on embodiment of this invention in the state attached to the bridge pier and the bridge. It is a side view which shows the rotation apparatus for bridge construction which concerns on embodiment of this invention in the state attached to the bridge pier and the bridge. It is a figure which shows the bridge side base member of the rotation apparatus for bridge construction which concerns on embodiment of this invention. It is a figure which shows the bridge side base member of the rotation apparatus for bridge construction which concerns on embodiment of this invention. FIG. 6 is a perspective view showing a bridge laying rotation device according to an embodiment of the present invention, showing a state in which a sliding plate of a bridge-side base member is attached. It is a cross-sectional view showing a bridge laying rotation device according to an embodiment of the present invention. FIG. 2 is an enlarged cross-sectional view of a main part showing a shaft mechanism, a support mechanism, and a moving mechanism, which is a rotating device for bridge construction according to an embodiment of the present invention. It is a top view which shows the attachment state of the upper bracket of the rotation apparatus for bridge construction which concerns on embodiment of this invention. It is a principal part enlarged view which shows the tilt suppression mechanism of the rotation apparatus for bridge construction which concerns on embodiment of this invention. It is a principal part enlarged view which shows the tilt suppression mechanism of the rotation apparatus for bridge construction which concerns on embodiment of this invention. It is a tilting suppression mechanism of the rotating device for bridge construction according to the embodiment of the present invention, and is a view showing a moving body in cross section. It is a figure which shows the rotational drive mechanism of the rotation apparatus for bridge construction which concerns on embodiment of this invention. It is a system diagram of a support mechanism and a tilt suppression mechanism of a bridge laying rotation device according to an embodiment of the present invention. It is a system diagram of the moving mechanism of the rotating device for bridge construction according to the embodiment of the present invention. It is a flowchart figure of the rotation apparatus for bridge construction which concerns on embodiment of this invention. It is a flowchart figure of the rotation apparatus for bridge construction which concerns on embodiment of this invention. It is a figure which shows the rotation state of the bridge side base member by the rotation apparatus for bridge construction which concerns on embodiment of this invention. It is a flowchart figure regarding control of the tilting suppression mechanism of the rotation device for bridge construction concerning an embodiment of the invention. It is a flowchart figure of the rotation apparatus for bridge construction which concerns on embodiment of this invention. It is a figure which shows the rotation apparatus for bridge construction which concerns on embodiment of this invention in the state which removed the part. It is a figure which shows an example of the conventional rotating device for bridge construction. It is a figure which expands and shows an example of the example of the conventional rotating device for bridge construction.

Explanation of symbols

DESCRIPTION OF SYMBOLS S Rotating device for bridge construction 1, 2, bridge pier 4 bridge 10 bridge pier side base member 20 bridge side base member 23 sliding contact plate 30 shaft mechanism 31 one member 32 hemisphere 33 other member 34 recess 36 through hole 38 reaction force member 43 rod 45 Support mechanism 46 Piston 47 Cylinder 50 Tilt prevention mechanism 51 Guide rail 60 Moving body 71 Piston 72 Cylinder 73 Sliding contact body 80 Rotation drive mechanism 81 Clamp part 82 Telescopic mechanism 90 Moving mechanism 91 Piston 92 Cylinder

Claims (25)

When installing a bridge between bridge piers, a bridge installation rotation device that supports the bridge rotatably with respect to the pier and lays the bridge by rotation,
A pier side base member provided on the pier side, a bridge side base member provided on the bridge side, and an axis provided between the base members and capable of rotating the bridge side base member with respect to the pier side base member A rotation device for erection of a bridge comprising a mechanism and a tilt suppression mechanism that suppresses tilting of the bridge-side base member when the bridge-side base member is rotated by the shaft mechanism;
The shaft mechanism is provided on one side of the pier-side base member and the bridge-side base member, with one end formed in a substantially hemispherical hemisphere, and the pier-side base member and the bridge-side base member. And the other member formed on a hemispherical concave portion that is provided on the other side and receives the hemisphere so as to be slidable ,
A funnel-shaped through-hole is provided at the center of the hemisphere of the one member along the central axis of the hemisphere to expand toward the surface of the hemisphere, and the central axis of the recess is formed at the center of the recess of the other member. A rotating device for bridge erection, comprising a rod loosely inserted into the through hole. 2. The bridge erection rotating device according to claim 1, further comprising a support mechanism that supports at least one of the one member and the other member so as to be vertically movable. 3. The bridge erection rotating device according to claim 2, wherein the support mechanism is constituted by a hydraulic drive jack composed of a piston and a cylinder, and the piston is constituted by at least one of the one member and the other member itself. . The tilt-inhibiting mechanism includes a guide rail provided along the outer periphery of the pier side base member, and the guide rail on the bridge side base member at equal intervals on the circumference around the rotation axis of the bridge side base member. 4. The bridge erection rotating device according to claim 1, further comprising a plurality of movable bodies provided so as to be movable on the upper side and supporting the bridge side base member with respect to the guide rail. The bridge laying rotation device according to claim 4, wherein the guide rail has a flat upper surface, and the movable body includes a sliding contact body having a flat surface that slides on the upper surface of the guide rail. . 6. The bridge laying rotation device according to claim 4, wherein the movable body is constituted by a hydraulic drive jack including a piston and a cylinder. 7. The bridge laying structure according to claim 6, further comprising detection means for detecting an advancing distance of the piston and control means for controlling the hydraulic pressure of a cylinder of the hydraulic drive jack based on detection of the detection means. Rotating device. A rotation drive mechanism for rotating the bridge side base member is provided,
A clamp part that can be detachably attached to the guide rail, the rotation drive mechanism is connected to the clamp part so that one end thereof is pivotable, and the other end is pivotally connected to the movable body. 8. The telescopic mechanism according to claim 4, further comprising: an expansion / contraction mechanism that extends or contracts during clamping to move the movable body and returns to its original position when the clamp is released from the clamp. Rotating device for bridge construction. 9. The rotating device for bridge construction according to claim 8, wherein the expansion / contraction mechanism is constituted by a hydraulic drive jack including a piston and a cylinder. Provided with a moving mechanism that supports the bridge side base member movably with respect to the one member or the other member provided on the bridge side base member, and moves the bridge side base member to lock it at an appropriate position. 10. The bridge erection rotating device according to claim 1, 2, 3, 4, 5, 6, 7, 8 or 9. A sliding contact plate is provided below the bridge side base member,
A reaction force material slidably contacting the slidable contact plate is provided on the upper side of the one member or the other member on the bridge side base member side,
The moving mechanism includes a piston and a cylinder, and one of the piston and the cylinder is fixed to the sliding contact plate, and the other is in contact with the reaction force material, and the sliding contact plate and the reaction force material are moved forward and backward by the piston. The rotating device for bridge construction according to claim 10, comprising a plurality of hydraulically driven jacks that move relative to each other. When installing a bridge between bridge piers, a bridge installation rotation device that supports the bridge rotatably with respect to the pier and lays the bridge by rotation,
A pier side base member provided on the pier side, a bridge side base member provided on the bridge side, and an axis provided between the base members and capable of rotating the bridge side base member with respect to the pier side base member A rotation device for erection of a bridge comprising a mechanism and a tilt suppression mechanism that suppresses tilting of the bridge-side base member when the bridge-side base member is rotated by the shaft mechanism;
The shaft mechanism is provided on one side of the pier-side base member and the bridge-side base member, with one end formed in a substantially hemispherical hemisphere, and the pier-side base member and the bridge-side base member. And the other member formed on a hemispherical concave portion that is provided on the other side and receives the hemisphere so as to be slidable,
The tilt-inhibiting mechanism includes a guide rail provided along the outer periphery of the pier side base member, and the guide rail on the bridge side base member at equal intervals on the circumference around the rotation axis of the bridge side base member. A rotating device for bridge erection, comprising a plurality of movable bodies that are movable on the top and that support the bridge-side base member with respect to the guide rail. 13. The bridge erection rotating device according to claim 12, further comprising a support mechanism that supports at least one of the one member and the other member so as to be vertically movable. 14. The rotation device for bridge construction according to claim 13, wherein the support mechanism is constituted by a hydraulic drive jack comprising a piston and a cylinder, and the piston is constituted by at least one of the one member and the other member. . 15. The bridge according to claim 12, 13 or 14, wherein an upper surface of the guide rail is formed in a flat surface, and the movable body is provided with a sliding contact body having a flat surface for sliding contact with the upper surface of the guide rail. Rotating device for erection. 16. The bridge laying rotation device according to claim 12, 13, 14 or 15, wherein the movable body is constituted by a hydraulic drive jack comprising a piston and a cylinder. 17. The bridge erection structure according to claim 16, further comprising: a detection unit that detects an advancing distance of the piston; and a control unit that controls a hydraulic pressure of a cylinder of the hydraulic drive jack based on the detection by the detection unit. Rotating device. A rotation drive mechanism for rotating the bridge side base member is provided,
A clamp part that can be detachably attached to the guide rail, the rotation drive mechanism is connected to the clamp part so that one end thereof is pivotable, and the other end is pivotally connected to the movable body. 17. An expansion / contraction mechanism that extends or contracts at the time of clamping to move the movable body and returns to the original position when the clamp part is released from the clamp is provided. Or the rotation apparatus for bridge construction of 17. 19. The rotation device for bridge construction according to claim 18, wherein the expansion / contraction mechanism comprises a hydraulic drive jack comprising a piston and a cylinder. Provided with a moving mechanism that supports the bridge side base member movably with respect to the one member or the other member provided on the bridge side base member, and moves the bridge side base member to lock it at an appropriate position. 20. The rotating device for bridge construction according to claim 12, 13, 14, 15, 16, 17, 18 or 19. A sliding contact plate is provided below the bridge side base member,
A reaction force material slidably contacting the slidable contact plate is provided on the upper side of the one member or the other member on the bridge side base member side,
The moving mechanism includes a piston and a cylinder, and one of the piston and the cylinder is fixed to the sliding contact plate, and the other is in contact with the reaction force material, and the sliding contact plate and the reaction force material are moved forward and backward by the piston. 21. The rotating device for bridge construction according to claim 20, comprising a plurality of hydraulically driven jacks that move relative to each other. When installing a bridge between bridge piers, a bridge installation rotation device that supports the bridge rotatably with respect to the pier and lays the bridge by rotation,
A pier side base member provided on the pier side, a bridge side base member provided on the bridge side, and an axis provided between the base members and capable of rotating the bridge side base member with respect to the pier side base member A rotation device for erection of a bridge comprising a mechanism and a tilt suppression mechanism that suppresses tilting of the bridge-side base member when the bridge-side base member is rotated by the shaft mechanism;
The shaft mechanism is provided on one side of the pier-side base member and the bridge-side base member, with one end formed in a substantially hemispherical hemisphere, and the pier-side base member and the bridge-side base member. And the other member formed on a hemispherical concave portion that is provided on the other side and receives the hemisphere so as to be slidable,
Provided with a moving mechanism that supports the bridge side base member movably with respect to the one member or the other member provided on the bridge side base member, and moves the bridge side base member to lock it at an appropriate position. A rotating device for bridge construction. 23. The bridge erection rotating device according to claim 22, further comprising a support mechanism that supports at least one of the one member and the other member so as to be vertically movable. 24. The rotation device for bridge construction according to claim 23, wherein the support mechanism is constituted by a hydraulic drive jack including a piston and a cylinder, and the piston is constituted by at least one of the one member and the other member itself. . A sliding contact plate is provided below the bridge side base member,
A reaction force material slidably contacting the slidable contact plate is provided on the upper side of the one member or the other member on the bridge side base member side,
The moving mechanism includes a piston and a cylinder, and one of the piston and the cylinder is fixed to the sliding contact plate, and the other is in contact with the reaction force material, and the sliding contact plate and the reaction force material are moved forward and backward by the piston. 25. The rotating device for bridge construction according to claim 22, 23 or 24, comprising a plurality of hydraulically driven jacks that move relative to each other.

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