JP2566403Y2 - Bearing structure of track girder - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to, for example, a monorail girder, a magnetic levitation vehicle, and a bearing structure for a track girder of a new transportation system.

[0002]

2. Description of the Related Art Conventionally, as a support structure of a track of a monorail girder, a magnetic levitation vehicle or a new transportation system, an upper shoe fixed to an upper structure such as a track girder and a lower structure such as a pier. 2. Description of the Related Art There is known a bearing in which a plurality of bearings each including an upper shoe and an engageable lower shoe are provided in a width direction of a track. For example,
As shown in FIG. 4, two girders G1 and G2 constituting the box-shaped orbital girder 101 are arranged in the width direction of the orbit, and each girder G1 and G2 is supported at both ends by bearings.

The track girder 101 is bent by its own weight and various loads acting thereon, and expands and contracts mainly in the track direction due to a temperature change. Therefore, track girder 101
The support that supports one end of the movable support Sfix is a fixed support Sfix, and the support that supports the other end is a movable support Smov.
In mov, the upper and lower shoes were engaged with a gap so that they could move in the orbital direction. Therefore, two digits G
1 and G2 are connected to one end of a fixed bearing S1fix,
S2fix and S2fix, respectively, and the other end is supported by the movable-side supports S1mov and S2mov having the same configuration.

[0004]

On the other hand, in the track width direction, the engagement between the upper shoe and the lower shoe is also considered in the track width direction in consideration of the installation error, expansion and contraction in the track width direction due to temperature change, and the like. It had a certain yuma. However, for example, if two track girders 101 adjacent to each other in the track direction move in the opposite directions with respect to the track width direction, the track itself relatively shifts, which causes inconvenience. For this reason, if the play is increased, a shift in the track width direction occurs.On the contrary, if the play between the upper shoe and the lower shoe is reduced, there is a problem that it is not possible to absorb the installation error and expansion and contraction in the track width direction due to a temperature change. However, accuracy control in the track width direction was an issue.

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a bearing structure of a track girder which can easily control the accuracy in the track width direction.

[0006]

In order to achieve the above object, the present invention has the following structure as means for solving the problems. That is, a track provided with a plurality of bearings, which are fixed to an upper structure such as a track girder and the like and a lower shoe fixed to a lower structure such as a pier and engageable with the upper shoe, are provided in the width direction of the track. In the girder support structure, one of the plurality of supports provided in the track width direction is engaged so as to prevent the upper and lower shoes from being displaced in the track width direction. , For the remaining bearings,
This is a configuration of a bearing structure of a track girder, wherein a gap is provided in a track width direction capable of absorbing expansion and contraction and deflection of the upper structure due to a temperature change and an acting load, and both are engaged with each other.

According to the bearing structure of the present invention, one of the plurality of bearings provided in the width direction of the track is engaged so as to prevent displacement between the upper and lower shoe in the track width direction. For the remaining bearings, a gap is provided between the upper and lower shoes in the track width direction capable of absorbing the expansion and contraction and deflection of the upper structure, so that they are engaged with each other.
Accuracy control is possible with the support of the location. In the support, there is almost no need to consider the amount of displacement due to a temperature change or an acting load, and there is no problem even if the degree of prevention of displacement is increased.

Accordingly, if the corresponding bearings of the track girders arranged in the track direction are engaged so as to prevent displacement in the track width direction, the track relatively shifts in the width direction between the two girders. The accuracy control in the track width direction is easy without any problem.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below in detail with reference to the drawings. FIG. 1A is a partial cross-sectional view of a bearing according to an embodiment of the present invention in a track direction, FIG. 1B is a partial cross-sectional view of the same in a track width direction, and FIG. It is a perspective view of a shoe. The bearing of the present embodiment includes an upper shoe 1, a lower shoe 11, and a bearing plate 21. The upper shoe 1 is fixed to a track girder G as an upper structure with anchor bolts 3.
Step portions 9 are formed at both ends in the orbital width direction in which notches 7 are formed to leave ear portions 5a and 5b in the orbital direction.

On the other hand, the lower shoe 11 is fixed to a pier B which is a lower structure by an anchor bolt 13, and at both ends in the track width direction of the lower shoe 11, projecting portions which engage with the notches 7 of the upper shoe 1 are provided. 15 are provided. A bearing plate 21 is provided between the upper shoe 1 and the lower shoe 11 to allow the track girder G to expand, contract, and rotate. An annular groove 19 is formed on the outer periphery of the concave portion 18 of the lower shoe 11 in which the bearing plate 21 is disposed, and a seal ring 20 is fitted therein.

A hook-shaped side block 17 is fixed to the projecting portion 15 of the lower shoe 11, and the step 9 of the upper shoe 1 is locked in the vertical direction to prevent the upper shoe 1 from rising. The bearings having such a configuration are disposed on the fixed side and the movable side of the two girder, the first girder G1 and the second girder G2 shown in FIG. 4, respectively. The four bearings, the bearing S1fix and the bearing S2fix on the second digit G2 side, and the bearing S1mov on the first digit G1 side and the bearing S2mov on the second digit G2 side on the movable side are engaged with the upper shoe 1 and the lower shoe 11, respectively. Are different. Below are the four bearings S1fi
The engagement of x, S2fix, S1mov, and S2mov will be described.

FIG. 3A shows an AA section of the upper shoe 1 and a BB section of the lower shoe 11 in FIG.
Is shown in FIG. 3 (B). As shown in FIG. 3 (A), the distance between two notches 7 provided at both ends of the upper shoe 1 in the track width direction is L1, and on the other hand, the lower shoes 11 which respectively engage with the notches 7 are provided. The distance between the two protrusions 15 is L2. As shown in FIG. 3B, the distance between the ears 5a and 5b in the upper shoe 1, that is, the width of the notch 7 is W.
1. On the other hand, the protruding portion 1 of the lower shoe 11 engaging with the notch 7
The width of 5 is W2. Four bearings S1fix of this embodiment,
Table 1 shows the values L1, L2, W1, and W2 of S2fix, S1mov, and S2mov described above.

[0013]

[Table 1]

First, two fixed-side supports S1fix, S2
Explain the fix. As can be seen from Table 1, the width W1 of the notch 7 is 140 mm and the width W2 of the protrusion 15 is 144 mm in both the bearing S1fix of the first digit G1 and the bearing S2fix of the second digit G2 in the track direction. Accordingly, there is only a small gap enough to absorb a manufacturing error or the like, and the space is fixed on the track direction.

On the other hand, in the track width direction, the distance L1 between the notches 7 of the support S1fix of the first girder G1 is 256 mm, the distance L2 between the protrusions 15 is 260 mm, and
The distance L1 between the notches 7 of the bearing S2fix of the girder G2 is 25.
0 mm, and the distance L2 between the protrusions 15 is 260 mm. Therefore, the bearing S1fix of the first girder G1 has only a small gap for absorbing a manufacturing error or the like, and serves as a reference side in the track width direction. Is absorbed by the bearing S2fix on the second digit G2 side.

Next, two movable-side supports S1mov, S2
mov will be described. As can be seen from Table 1, the width W1 of the notch 7 is 140 mm and the width W2 of the protrusion 15 is 250 mm in both the bearing S1mov of the first digit G1 and the bearing S2mov of the second digit G2 in the track direction. That is, 110 mm
This gap absorbs deflection due to the weight of the girders G1 and G2 and various loads acting thereon, and expansion and contraction in the orbital direction caused by a temperature change.

On the other hand, in the track width direction, the distance L1 between the notches 7 of the support S1mov of the first girder G1 is 256 mm, the distance L2 between the protrusions 15 is 260 mm, and the second
The distance L1 between the notches 7 of the support S2mov of the girder G2 is 25.
0 mm, and the distance L2 between the protrusions 15 is 260 mm. Therefore, the bearing S1mov of the first girder G1 has only a small gap for absorbing a manufacturing error or the like, and serves as a reference side in the track width direction. Is absorbed by the bearing S2mov on the second digit G2 side.

Thus, the two fixed-side supports S1fix
, S2fix, two movable-side supports S1mov, S2mov
In both cases, the bearing S1 on the first girder G1 side in the track width direction.
fix, S1mov can be used as a reference, and its support S1
For fix and S2fix, there is almost no need to consider the amount of displacement due to temperature changes and applied loads, and it is sufficient to absorb the minimum errors such as manufacturing errors.
There is no problem even if the degree of prevention of misalignment is increased.

Therefore, each track girder 10 arranged in the track direction
For example, the upper shoe 1 and the lower shoe 11 are manufactured and engaged with the dimensions shown in Table 1, for example, in order to prevent the bearings S1fix and S1mov on the first girder G1 side from being displaced in the track width direction. By doing so, the track does not relatively shift in the width direction between the two track beams 101. Accuracy control in the track width direction is easy only on the first digit G1 side.

In the above-described embodiment, the case where there are two bearings in the track width direction has been described. However, even if there are three or more bearings, one of the upper and lower shoes 1 and 11 is connected to the track width direction. It is only necessary to engage them so as to prevent positional deviation from being used as a reference for positioning. Also in this case, similarly, the accuracy control in the track width direction can be easily performed by only one location.

As described above, the present invention is not limited to such an embodiment, and can be implemented in various modes without departing from the gist of the present invention. For example, the same can be applied to a concrete girder. Further, in the above-described embodiment, an example is described in which a straight track girder is employed, but the same can be applied to a curved track girder used for a curve.

[0022]

As described in detail above, according to the bearing structure of the track girder of the present invention, one of the plurality of bearings provided in the track width direction is positioned in the track width direction between the upper and lower shoe. The two bearings are engaged so as to prevent displacement, and the remaining bearings are engaged with each other with a gap in the track width direction capable of absorbing expansion and contraction. Quality control is possible. Therefore, if the corresponding bearings of the track girder arranged in the track direction are engaged so as to prevent displacement in the track width direction, the track can be relatively shifted in the width direction between both track girder. Therefore, there is an effect that accuracy control in the track width direction is easy.

[Brief description of the drawings]

FIG. 1A is a partial cross-sectional view of a bearing according to an embodiment of the present invention in a track direction, and FIG. 1B is a partial cross-sectional view of the same in a track width direction.

FIG. 2 is a perspective view of an upper shoe and a lower shoe.

FIG. 3A is a cross-sectional view showing a distance L1 between notches and a distance L2 between protrusions, and FIG. 3B is a side view showing a width W1 of the notch and a width W2 of the protrusion.

4A and 4B are diagrams for schematically explaining a general support structure of a track girder in which two girder are arranged in the track width direction, wherein FIG. 4A is a side view, FIG. 4B is a top view, and FIG. FIG. 4 is a schematic explanatory diagram when viewed in the orbit direction.

[Explanation of symbols]

S1fix, S2fix, S1mov, S2mov ... Support B ... Pier, G1 ... First digit, G2 ... Second digit,
1 ... upper shoe, 5a, 5b ... ear, 7 ... notch,
9 ... step, 11 ... lower shoe, 15 ... projection,
21: Bearing plate, 101: Track girder

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Eri Kito 1-17-17 Minamieki, Nakamura-ku, Nagoya-shi, Aichi Prefecture Inside Chubu HSTS Development Co., Ltd. (72) Inventor Omori Ozaki Japan Vehicle Manufacturing Co., Ltd. (1-1) Mihonmatsu-cho, Atsuta-ku, Nagoya, Japan (72) Inventor Naoshi Yamaguchi 1-1, Sanbonmatsu-cho, Atsuta-ku, Nagoya, Aichi, Japan (56) References JP 58-127803 (JP, A) JP-A-58-127802 (JP, A) JP-A-49-44531 (JP, A) JP-A-54-91932 (JP, A) JP-A-2-164902 (JP, A) A) Real opening 63-190315 (JP, U)

Claims (1)

(57) [Scope of request for utility model registration] 1. A bearing having an upper shoe fixed to an upper structure such as a track girder and a lower shoe fixed to a lower structure such as a pier and capable of engaging with the upper shoe is provided in a plurality in the width direction of the track. In the bearing structure of the provided track girder, for one of the plurality of bearings provided in the track width direction, the upper shoe and the lower shoe are prevented from being displaced in the track width direction. The remaining bearings are engaged with each other by providing a gap between the upper and lower shoes in the track width direction that can absorb expansion and contraction and deflection of the upper structure due to temperature change and applied load. Bearing girder support structure characterized by the following.