JPH08218322A - Level adjustment and movement limiter for bridge - Google Patents

Abstract

PURPOSE: To adjust easily levels on the abutment side and the bridge side due to the uneven settlement, etc., of a ground by detachably interposing a pair of adjusting plates between the lower metal plate and intermediate plate of a movement limiter for a bridge. CONSTITUTION: A lower base fitting 20 and a lower metal plate 2 are fixed onto the lower structure 11 of an abutment 1, and an intermediate plate 4 capable of being screwed to the lower base fitting 20 and the lower metal plate 2 is mounted. An engaging projection 9 is formed to the upper section of the intermediate plate 4, and the engaging projection 9 can be fitted into the recessed section 10 of an upper metal plate 7. The upper metal plate 7 is fixed onto a bridge 8. A jack for lifting and lowering the bridge is arranged between the lower structure 11 and the bridge 8, the bridge 8 is elevated only at a small distance, the recessed sections 5 for fitting of level adjusting plates 6 are fitted to lower engaging sections 3, the bridge 8, at the upper metal plate 7 and the intermediate plate 4 are lowered by the jack, and the intermediate plate 4 is brought down so as to be brought into contact with the top faces of a pair of the level adjusting plate 6. Bolts 17 for fixing are screwed to caps 19 for screwing, thus completing level adjustment operation by a pair of the level adjusting plates 6.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a lower metal plate and an intermediate plate side fixed to an abutment side, and an upper metal plate side fixed to a bridge, and a fitting hole provided in one of them. Movement for bridges in which the fitting protrusions provided on the other side are fitted to each other so that the lateral displacement between them is limited, and the level of the fitting can be adjusted by the level adjusting plate. It relates to a limiting device.

[0002]

2. Description of the Related Art As a conventionally known support device for a bridge of this type of rubber bearing, there is known one shown in Japanese Utility Model Publication No. 64-416.

[0003]

In such a bridge supporting device, a movement limiting device is provided in combination with the supporting device. As described above, in this movement limiting device, the abutment side member and the bridge side member are moved by the fitting hole provided on one side and the fitting protrusion provided on the other side to move the bridge. However, when the ground is unevenly submerged, for example, an error occurs between the fitting depth of the fitting protrusion and the fitting hole (that is, the level),
Further, there are cases where the axes of the fitting projection and the fitting hole are shifted and tilted to each other. In this case, there has hitherto not been a bridge movement restricting device capable of easily adjusting the level of fitting between the fitting hole and the fitting projection.

[0004]

In order to solve the above-mentioned problems, a bridge level adjustment movement restricting device according to the present invention comprises a lower engaging projection 3 provided on a lower metal plate 2 fixed to an abutment 1.
Is protruded from the upper surface of the lower metal plate 2 and is fitted into the recess 22 of the intermediate plate 4 supported by the lower metal plate 2, and the upper locking projection 9 provided on the intermediate plate 4 is attached to the bridge 8. In the movement restricting device for a bridge, which is fitted in the locking projection fitting recess 10 of the fixed upper metal plate 7, the lower locking projection 3 is fitted between the lower metal plate 2 and the intermediate plate 4. The present invention is characterized in that a pair of level adjusting plates 6 having projection fitting recesses 5 are detachably interposed and fixed.

[0005]

Embodiments of the present invention will be described below with reference to FIGS. First, as shown in FIGS. 1 to 3, an abutment 1
A lower steel support plate 13 having no opening is brought into contact with the lower surface of the lower steel plate 2 made of steel and having a circular central hole 12 embedded in the upper part of the lower structure 11 made of, and fixed by welding. Also, the upper ends of a plurality of lower anchor members 15 having a large number of retaining recesses 14 on the peripheral surface are fixed to the steel lower metal plate 2 by welding. Further, at the corners of the intermediate plate 4 fixed to the bridge 8 side, there are provided through holes 16 for inserting bolts, respectively.
At the lower side in the vertical direction of the lower metal plate 2 made of steel, a bolt screwing internal thread portion 18 for screwing the fixing bolt 17 is formed.
And a cap 1 for bolt screwing, which has a female screw portion coaxial with the bolt screwing female screw portion 18 and having the same pitch.
9 is fixed to the lower surface of the steel lower metal plate 2 by welding.

A lower base fitting 20 is constituted by a steel lower metal plate 2 fixed to the lower structure 11, a steel lower support plate 13, a bolt screw cap 19 and the like. The lower part of the steel lower locking projection 3 provided between the steel lower metal plate 2 and the steel lower metal plate 2 is fitted into a circular center hole 12 in the steel lower metal plate 2.

Next, the structure of the intermediate plate 4 will be described. First, at the center of the lower portion of the intermediate plate 4, the lower engaging protrusion 3
A central hole 22 of an intermediate plate having a diameter slightly larger than that of the intermediate plate 4 is provided, and the above-described bolt insertion through holes 16 and the heads of the bolts 17 positioned above the intermediate holes 4 are accommodated in the four corners of the intermediate plate 4. And a cylindrical upper locking projection 9 having a larger diameter than the central hole 22 of the intermediate plate is integrally provided in the central portion of the upper surface of the intermediate plate 4.

Next, the structure of the upper metal plate 7 fixed to the bridge 8 will be described. First, a large number of upper anchor members 21 that are also embedded in the bridge 8 are fixed to the upper surface of the upper metal plate 7 that is partially embedded in the bridge 8, and from the lower surface of the bridge 8 in this upper metal plate 7, Protruding part 30
Has a diameter larger than the diameter of the upper locking projection 9 and is provided with a locking projection fitting recess 10 into which the upper locking projection 9 is fitted. This locking projection fitting recess 10
Is in the form of a long groove, and the dimension in the width direction is such that the upper locking projection 9 can be fitted therein as described above, and it is preferable to provide it in the axial direction of the bridge longer than the width direction.

FIGS. 1 to 3 show a state in which a bridge supporting device made of steel is fixed at a predetermined position, and the bridge 8 and the upper metal plate 7 are connected by a plurality of lifting jacks 26. After the intermediate plate 4 is moved upward by a fixed small distance, the lower portion of another lower locking projection 3 having a dimension slightly longer than the lower locking projection 3 is moved to the center of the circular shape of the base fitting 20. The pair of level adjustment plates 6 are placed on the upper surface of the lower metal plate 2 while being fitted in the holes 12, and the projection fitting recesses 5 of the pair of level adjustment plates 6 are fitted in the diameter direction of the lower locking projections 3. Fitting from both sides, then through holes 28 provided on both sides in the width direction of each level adjustment plate 6 and female screw portions 18 for bolt screwing of the lower metal plate 2,
The intermediate plate 4 is aligned with the bolt insertion through hole 16.

Next, as shown in FIGS. 4 and 5, the fixing bolts 17 are inserted into the bolt insertion through holes 16 of the intermediate plate 4 and the through holes 28 of the level adjusting plate 6, and the lower steel metal plate 2 made of steel.
Female screw part 18 for bolt screwing and cap 1 for bolt screwing
9, the pair of level adjustment plates 6 and the intermediate plate 4 disposed above the pair of level adjustment plates 6 are fixed on the abutment 1.

A jack 26 for lifting and lowering a bridge shown in FIG.
Is disposed between the substructure 11 which is the abutment 1 and the bridge 8 as described above, and then the bridge lifting jack 2
4, the bridge 8 is raised by a small distance as shown in FIG. 4, then the projection fitting recesses 5 in the pair of level adjusting plates 6 are fitted to the lower locking projections 3, and then the bridge lifting The jack 26 lowers the bridge 8, the upper metal plate 7, and the intermediate plate 4 as shown in FIG. 5, and lowers the intermediate plate 4 so as to contact the upper surfaces of the pair of level adjusting plates 6. Next, the fixing bolt 17 is screwed into the screw cap 19, and the level adjusting operation by the pair of level adjusting plates 6 is completed.

[0012]

According to the present invention, the following effects can be obtained because of the configuration described above. When the fitting level between the upper locking projection 9 fixed to the abutment 1 side and the locking projection fitting recess 10 fixed to the bridge 8 side is out of the set value due to uneven settlement of the ground, etc., the intermediate plate The level adjustment can be easily performed by interposing the pair of level adjusting plates 6 and 6 between the upper metal plate 7 and the lower base metal fitting 20 without replacing the intermediate plate 4 and replacing the intermediate plate 4. You can
Further, since it is not necessary to leave the removed large-sized intermediate plate 4 as it is, it is possible to economically use the intermediate plate 4 as it is and adjust the fitting level to a constant level. .

[Brief description of drawings]

FIG. 1 is an exploded perspective view of a bridge level adjustment movement limiting device according to an embodiment of the present invention.

FIG. 2 is a vertical cross-sectional front view of the device of the present invention without using the level adjusting plate.

FIG. 3 is a longitudinal sectional front view showing a state where a bridge is lifted by a bridge lifting / lowering jack.

FIG. 4 is a vertical sectional front view of an initial state in which a level adjusting plate is inserted.

FIG. 5 is a longitudinal sectional front view showing a state in which a level adjusting plate is being inserted.

FIG. 6 is a longitudinal sectional front view showing a state where the level adjustment plate has been inserted.

[Explanation of symbols]

 1 Abutment 2 Lower metal plate 3 Lower locking protrusion 4 Intermediate plate 5 Projection fitting recess 6 Level adjustment plate 7 Upper metal plate 8 Bridge 9 Upper locking projection 10 Locking projection fitting recess 11 Lower structure consisting of abutment 12 Circular Center hole of 13 steel lower support plate 14 retaining recess 15 lower anchor member 16 through hole for bolt insertion 17 fixing bolt 18 female screw portion for bolt screwing 19 cap for bolt screwing 20 lower base metal fitting 21 upper anchor member 22 middle plate Central hole 23 Recessed portion 26 Bridge elevation jack steel plate 27 Level adjustment plate 28 Bolt insertion hole 29 Countersunk head screw 30 Projected part

Claims (1)

[Claims] 1. An intermediate plate 4 supported by the lower metal plate 2 after protruding a lower engaging projection 3 provided on a lower metal plate 2 fixed to the abutment 1 from the upper surface of the lower metal plate 2. In the movement restricting device for a bridge, the upper locking projection 9 provided on the intermediate plate 4 is fitted into the locking projection fitting recess 10 of the upper metal plate 7 fixed to the bridge 8. Between the lower metal plate 2 and the intermediate plate 4, a pair of level adjusting plates 6 each having a protrusion fitting recess 5 into which the lower engaging protrusion 3 fits are detachably fixed and fixed. Restriction device.