JPS59141607A - Expansion joint of running surface - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present applicant previously filed patent application No. 2881 of 1981 for the purpose of supporting a vehicle with rubber tires and air flotation pads.
The present invention can be effectively used on the tracks of the above-mentioned transportation device, and is particularly effective for running surfaces for rubber tires or air levitation pads that support vehicles, and in particular for air levitation pads. This relates to expansion joints on running surfaces.

An object of the present invention is to prevent the plane from being interrupted or missing a part of the plane at the joints of elevated girders, etc., which are the basic structures that constitute the passage for vehicles. To provide an expansion joint on a running surface that allows smooth running, reduces air outflow loss from an air floating pad, and can be sufficiently applied to cases where gap changes are large, such as in foundation structures.

Another object of the present invention is to provide a running surface expansion joint having a structure that follows the elastic deflection and other displacements of elevated girders and substructures constituting a vehicle passageway.

In general, at the joints of foundation structures such as roads and tracks that serve as vehicle passageways, such as elevated girders, there are changes in the joint gap due to temperature expansion and contraction of the girder, as well as changes in the joint gap due to deflection of the girder due to vehicle loads (discussed later in the explanation of Figure 4). ) also occurs. Even at joints with such gaps, it is necessary to provide continuous support for the vehicle in order to allow the vehicle to run smoothly, and so-called expansion joints are used here. The running surface of a rubber tire (including the rolling surface of a guide wheel of a rubber tire) has a shape shown in Figure 4 of Patent Publication No. 59202 of 1980, a so-called finger shape as shown in Figure 6 of the same publication, There are expansion joints such as the inclined type shown in Figure 14 of the same publication.
Since these have a structure in which the flat surface is not interrupted (the wheels do not fall in), they have a sufficient practical effect on vehicles supported by rubber tires. However, when these expansion joints are used to support a vehicle with an air levitation pad, there is a part of the joint where a part of the flat surface is missing, and this becomes a gap in terms of fluid and when the air levitation pad passes through. Excessive air outflow occurs and the vehicle cannot be supported adequately. As a solution to this problem, an expansion joint using a lip with a triangular cross section is proposed in Patent Publication No. 132511 (1977) entitled "Track Device for Air Cushion Type Transport Equipment", but the same publication, page 5, line 17, As described in 2003, the length of a single track is about 15 m, and it is difficult to apply it to a long elevated girder with a large amount of expansion and contraction.

The reason is that the lip length must be longer than the amount of expansion and contraction, but a long triangular lip has problems with strength.
Furthermore, when the seam spacing increases, the lip falls along the slope of the other party, creating a triangular groove on the running surface, and the air outflow from the air floating pad cannot be ignored.On the other hand, considering the construction conditions, Elevated roads constructed over surface roads are generally 30m to 40m long, and at road intersections, the length is 40m to 50m due to the convenience of surface road traffic.
It has become common to have a girder length of m or more, and it must be considered that such conditions are naturally applied to elevated structures constructed in the sky.

In order to accommodate this, expansion joints are required that can tolerate changes in the seam spacing of several tens of plates.

The present invention eliminates the above-mentioned disadvantages of the known expansion joints and is capable of fully accommodating the amount of expansion and contraction required in construction.

The gist of the present invention is as follows: (1) A running surface end member provided on each of two foundation structures facing each other at a joint between the foundation structures of a passage; (2) The joint plate is a flat plate whose end surfaces at both ends in the longitudinal direction of the passage are nonparallel and basically has a triangular or trapezoidal planar shape. ) When the joint spacing of the basic structure increases, the seam plate moves in the direction across the aisle to fill the gap in the running surface caused by this, and when the seam spacing decreases, the seam plate moves in the direction across the aisle. (4) The running surface end member has an edge that faces and contacts the end surface of the joint plate, and the upper surface of the edge is at the same height as the running surface and one step below the upper surface of the edge. (5) The joint plate moving structure is a combination of grooves and protrusions provided parallel to the edge of the running surface end member, so that the joint plate can only be moved parallel to the edge. The joint can be engaged to allow relative movement, or a mechanism using a spring or gravity can apply a moving force to move the joint plate in the direction across the passageway so as to fill the gap that occurs on the running surface when the joint distance increases. When the spacing increases, the seam plate is pulled in or pushed in, and when the seam spacing decreases, the seam plate is pushed out in the cross-path direction. (6) The width of the seam plate is the seam plate at the minimum seam spacing. The width shall be wide enough to include the minimum width necessary to support passing vehicles, both when the seam plate is moving in the cross-aisle direction and when the seam plate is at its maximum.

and (7) a flexible portion that follows the deflection of the foundation structure is provided at the intermediate portion of the joint plate in the longitudinal direction of the passage.

(8) Divide the joint plate into multiple pieces in the direction across the passage, and connect the multiple pieces with a structure that allows minute bending between each piece.

It is something. The present invention will be explained below with reference to figures of embodiments.

FIG. 1 is a perspective view of a partial cross section when the expansion joint of the running surface of the present invention is implemented in the patent application No. 2881 of 1981 "Small track cross-section transportation device". A vehicle 1 for transporting passengers is supported by a large number of air levitation wheels 2, a propulsion vehicle 3 is supported by running wheels 4 of comb tires, each vehicle has guide wheels 5, and pads 2 and running wheels. 4 is a transport device in which the guide wheels 5 are guided by the guide rails 7, and the guide wheels 5 are supported by the running surface 6. As shown in the figure, the elevated platform is constructed of integral floor plates, side walls, and a roof, and is used as the basic member of the track. There are track girders 8 and 9, the joint of which is the pier 10
The expansion joint of the present invention is provided directly above the running surface of that portion. 11 is one running surface end member provided on the elevated track girder 8 (one of the opposing foundation structures),
Reference numeral 12 designates another running surface end member provided on the elevated track girder 9 (the other of the opposing substructures), and what is shown is the upper surface of their edge, which is at the same height as the running surface 6. . ]3
is a joint plate installed across both of them, and its planar shape is triangular (accurately shaped like a moss ladder because there is a slightly flattened area at the apex of the triangle). There are two running surfaces per passage (J track), and joint components are distinguished by suffixes R-L to their numbers. Note that the joint plate moving structure is not shown.

When the joint interval increases, both the joint plates 13R and 13L move outward in the transverse direction of the passageway (track), thereby increasing the distance between the joint plates 11-
It acts to fill the gap between 13 and between 13 and 12. 14 is another bridge pier, and a joint for the elevated girder is also provided just above this pier, and an expansion joint for the running surface is also provided.

FIG. 2 is a plan view showing one embodiment of the present invention, and FIG. 3 is a longitudinal sectional view thereof. Elevated girders 15 and 16, which are the basic structures of the passageway (track), face each other at the joint, and are each provided with running surface end members 17 and 18, which are fastened with bolts. A joint plate 19 is provided at
Furthermore, a joint plate moving structure consisting of grooves 20 and protrusions 21 is used for the joint plate, and these constitute the expansion joint of the running surface of the present invention.

The joint plate has both end faces 22 and 23 in the longitudinal direction of the passage which are non-parallel, and the planar shape is trapezoidal as shown in the figure, and the whole is flat plate-like. The running surface end pieces 17.18 have edges 24.25 facing and adjoining the end faces 22, 23 of the seam plates, the upper surface of which is connected to the running surface 26.
．． At the same height as 27, there is a joint plate 1 one step below the top surface of the edge.
It has parts 28 and 29 that support the lower surface part of 9. The joint plate moving structure has a groove 20 on the lower surface of the joint plate 19 at an end surface 22.
23 (in other words, parallel to the edge of the running surface end member), and the protrusion 21 projects from a portion 28, 29 of the running surface end member that supports the lower surface of the joint plate. This protrusion consists of a shaft 30 and a roller 31.

Since the groove 20 is parallel to the end face 22.23 of the seam plate and the protrusion 21 engages in this groove, the seam plate can only be moved relative to the edge 24.25 of the running surface end piece. Edge 2
4.25 and the joint plate end faces 22.23 continue to be in contact with each other without separating, and as the joint spacing of the foundation structure increases, the joint plate is connected to the groove 20 and the protrusion 21 as shown by the dashed line. It moves outward in the passageway in the cross-passage direction due to the engagement effect. In addition, when the joint spacing of the foundation structure is reduced, the joint plate is sandwiched between the two running surface end members and both end surfaces 22.2
3 is pushed, and the component of the pressure in the direction across the passage pushes it toward the center of the passage. The width of the seam plate in the transverse direction of one passage is the minimum width necessary to support passing vehicles both when the seam plate is moved furthest outward when the seam spacing is maximum, and when it is moved furthest inward when the seam spacing is minimum. The width B includes the narrow width A.

Reference numeral 50 indicates a backing that closes a minute gap, and reference numeral 51 indicates a guide rail for guiding and running a guide rail car or the like.

The elevated girder 16 is supported by the pier 10 via a fixed shoe 32, and the elevated girder 15 is supported by the pier 10 via a movable shoe 33.
5 does not move relative to the pier 10 even if the temperature expands or contracts, and the other end of the elevated girder 16 (not shown) is supported by a fixed shoe. The end face of the girder 15 moves and the seam interval G changes.

FIG. 4 is a side view illustrating the deflection of a commonly known elevated girder, and the solid line indicates the case where a vehicle load is applied in an unloaded state, and the two-dot chain line indicates the case. The elevated girder 16 undergoes vertical bending due to the load, creates a deflection angle ψ at the support point, and rotates about the shoe 32. As a result, the top surface of the girder moves by δ and the seam interval increases. The value of δ is related to the height h from the shoe to the running surface, and has a relationship of δ−ψh. In this way, there are factors other than temperature expansion and contraction that affect the seam spacing, and these must be taken into account when designing expansion joints.

Regarding the deflection of the elevated girder, the intermediate part C in the longitudinal direction of the passage (track) of the joint plate 19 shown in Fig. 3 is made particularly thin, and this part has flexibility in the vertical bending direction. The aim is to obtain the effect of following the deflection of the elevated girder, which is the foundation structure, as indicated by ψ.

FIG. 5 is a plan view showing another embodiment of the present invention, and FIG. 6 is a cross-sectional view thereof. The configuration consisting of the running surface end member and the joint plate is the same as in the case shown in Fig. 2, but there is a difference in the joint plate movement structure, which uses a pre-compressed coil spring device. The end member 35 is the other running surface end member, 36 is a joint plate whose actual planar shape is hexagonal, or the part used as the running surface is up to the part shown by the dotted line, and the basic planar shape is trapezoidal. . The plane has been extended into a hexagonal shape due to the relationship with the coil spring device. 37 is a pre-compressed coil spring that applies outward pressure to the left and right joint plates via a vertical arm 38. The vertical arm 38 is pivotally connected to an arm stand 39 fastened to the upper surface of the elevated girder, and has the function of maintaining the position of the coil spring 37.

FIG. 7 is a plan view showing another embodiment of the present invention in a passage whose entire running surface is flat, FIG. 8 is a cross-sectional view thereof, and FIG. 9 is a longitudinal cross-sectional view thereof. 40 is one running surface end member, 41 is the other running surface end member, and a joint plate 42 is provided straddling both. As indicated by subscripts a to f, it is divided into a plurality of pieces in the direction across the passage, and each piece is connected in a mutually interlocking structure as indicated by D, allowing for slight bending between the pieces. This is designed to closely follow curves with large curvatures of the entire running surface that may occur as plane errors. A mechanism consisting of a weight 43, a rope 44, and a pulley 45 converts the gravity of the weight into horizontal force, and applies that force to the joint plate as a moving force. The total width E of the seam plate is the minimum width F required to support passing vehicles both when the seam plate is at its maximum and the seam plate moves to the left, and when the seam plate is at its minimum and the seam plate moves to the right. It is wide enough to encompass the following. A walkway with a running surface that is entirely flat can also be adopted for automobile roads, and when the expansion joint of the running surface of the present invention is used on an automobile road, it will be much smoother than a conventional expansion joint. You can expect the vehicle to run smoothly. Note that H indicates fitting into the running surface end members 4o, 41 that prevents the joint plate 42 from floating up.

As explained above, the expansion joint of the running surface of the present invention always supports the vehicle by being composed of two running surface end members and a triangular or trapezoidal flat plate-shaped joint plate that straddles between them and has a structure that moves in the transverse direction. It not only allows rubber tire vehicles to run smoothly, but also allows vehicles supported by air floating pads to run with less air outflow loss, as well as supporting the foundation structure. It is also applicable to cases where there is a large gap change. Furthermore, by providing a flexible part in the middle of the joint plate in the longitudinal direction of the passageway, it can better follow the deflection of the foundation structure, and by dividing the joint plate into multiple pieces in the direction transverse to the passageway, The present invention can fully achieve its objectives, such as being able to follow plane errors such as curvature.

Of the joint plate moving structures, two embodiments are shown for the structure that provides the moving force, one shown in Figure 2 that uses a preloaded coil spring device, and the other shown in Figure 8 that uses the gravity of a weight, but the structure can be selected depending on the application. The former has a simple structure, but if the travel distance of the joint plate across the passage is particularly large, it becomes difficult to design the coil spring. Although the latter requires a large-scale mechanism, it has the advantage of being able to accommodate a long moving stroke of the joint plate.

Furthermore, the present invention can be used in combination with a structure in which the joint plate and the running surface end member are engaged by grooves and protrusions, and a structure in which moving force is applied using springs or gravity. This is because when the joint plate is large and heavy, the resistance to movement is large and if this is done only by the engagement of the grooves and projections, it will be difficult to design the strength against the load to be borne. The above design can be facilitated by supplementarily adding a moving force such as a spring force.

[Brief explanation of the drawing]

Fig. 1 is a partially cross-sectional perspective view showing a transportation device in which an expansion joint of the running surface of the present invention is implemented, Fig. 2 is a plan view of an embodiment of the first invention of the present application, and Fig. 3 is a longitudinal section thereof. 4 is a side view illustrating the deflection of a commonly known elevated girder, FIG. 5 is a plan view of an embodiment of the second invention of the present application, FIG. 6 is a cross-sectional view thereof, and FIG. A plan view of another embodiment of the present invention, FIG.
9 is a longitudinal sectional view of FIG. 7. 2... Air flotation pad, 4... Rubber tire running wheel, 6.26.27... Running surface, 8.
9.15.16...Elevated girder, 11.12.17
．． 18.34.35.40.41... Running surface end member, ]3.19.36.42... Joint plate,
20.47...protrusion, 24.25...
- Edge of running surface end member, 37...Coil spring. Patent applicant Yukio Uozumi

Claims (1)

[Scope of Claims] (]) In a vehicle passageway where the running surface for rubber tires or air flotation pads supporting the vehicle is a plurality of planes in the direction of vehicle travel or a single plane as a whole, the swollen foundation of the passageway. It consists of a running surface end member provided on each of two basic structures that face each other at a joint such as an elevated girder, and a joint plate provided across the two members, and the joint plate is a passageway. It is a flat plate whose longitudinal ends are nonparallel and basically has a triangular or trapezoidal planar shape.
When the joint spacing of the basic structure increases, the seam plate moves in the direction across the aisle to fill the resulting gap in the running surface, and when the seam spacing decreases, the seam plate moves in the direction across the aisle. The running surface end member has a fastening portion that faces and contacts the end surface of the joint plate,
The upper surface of the edge is at the same height as the running surface, and has a part that supports the joint plate one step below the upper surface of the edge, and the width of the joint plate in the cross-path direction is equal to the minimum joint spacing of the foundation structure. It is characterized by having a width that includes the minimum width necessary to support passing vehicles both when the joint plate is moving in the cross-aisle direction and when the joint plate is at the maximum joint interval and when it is moving in the cross-aisle direction. Expansion joint on the running surface. (2) A combination of grooves and protrusions provided parallel to the edge of the running surface end member allows for a joint plate movement structure in which the joint plate engages in a relatively movable joint only parallel to the edge. An expansion joint for a running surface according to claim 1. (3) A mechanism using a spring or gravity is used to apply a moving force to move the joint plate in the direction across the aisle so as to fill the gap in the running surface that occurs when the joint distance between the foundation and the structure increases. An expansion joint for a running surface according to claim 1 or 2, characterized in that it has a joint plate moving structure. (4) A flexible portion that follows the deflection of the foundation structure is provided at an intermediate portion of the joint plate in the longitudinal direction of the passage. Expansion joints on running surfaces. (5) The joint plate is divided into a plurality of pieces in the direction across the passage, and the plurality of pieces are joined together in a structure that allows minute bending between each piece. The expansion joint of the running surface according to any of item 4.