JPS63219710A - Comb-shaped extension joint for road having corrugated leaf spring embedded gap filling extensible material - 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 [Field of Industrial Application] The present invention relates to a comb-shaped expansion joint for roads, which is installed at a road expansion joint such as an elevated road and has a corrugated leaf spring embedded filler expansion member.

[Prior art]

As one of the expansion joints installed at the expansion joints of road bridges,
A comb-shaped expansion joint is known, which is constructed by telescopically interlocking a pair of metal comb-shaped joint members.

In the case of a comb-type expansion joint, when the bridge girder contracts due to a drop in temperature, a comparison occurs between the groove between adjacent tooth rods in the comb-type joint member and the tip of the tooth rod located within the groove. A large vertical space is created.

On the other hand, in the case of road bridges, especially long road bridges, bicycles run on the roadway, and all pedestrians walk on the roadway, so the bicycle tire may be squeezed into the penetration space of the comb-shaped expansion joint, or the heel of a high heel may be squeezed into the penetration space. Sometimes I get stuck. In addition, solid objects that have fallen on the road bridge may pass through the through space and fall under the road bridge, and furthermore, pedestrians on the road bridge may see through the through space under the road bridge. This is inconvenient because it can be

As a comb-shaped expansion joint that eliminates these drawbacks, a pair of metal comb-shaped joint members 1 are proposed as shown in FIGS. 6 and 7.
All of the tooth rods 2 of the comb-shaped joint member 1 mesh with each other, and the grooves between the adjacent tooth rods 2 of the comb-shaped joint member 1 are arranged between the tips of the tooth rods 2 disposed in the grooves toward the center. A rubber filler elastic member 6 having an obtuse V-shaped upper surface that is lowered at the lower end is provided, and mounting metal fittings Z are fixed to one end and the other end of the filler elastic member 6, between the adjacent tooth rods 2. A comb-type expansion joint for roads has been proposed, which has a structure in which a filler elastic member is fixed with ZELT 8 to the deep part of the groove and the tip of the tooth rod 2 disposed in the groove.

[Problem that the invention seeks to solve]

However, in the case of the above-mentioned conventional comb-shaped expansion joint for roads using a filler elastic member TW, mounting brackets are fixed to both ends of the rubber filler elastic member B, which has an obtuse V-shaped upper surface that becomes lower toward the center. 7 is only fixed to the deep part of the groove of the comb-shaped joint member 1 and the tip of the toothed rod 2, so when the comb-shaped expansion joint is shortened, the middle part of the filler elastic member 6 is bent downward. As a result, when the comb-shaped expansion joint is extended, the filling elastic material 6 is deflected downward under a relatively small load. Therefore, there is a problem in that the bicycle riding performance and walking performance on the filler elastic material 6 are deteriorated.

[Object and structure of the invention]

The object of the present invention is to provide a comb-type expansion joint for roads having a corrugated leaf spring embedded and a filler expansion member that can advantageously solve the above-mentioned problems. The tooth rods 2 of the metal comb-shaped joint member 1 are meshed with each other, and between the groove between the adjacent tooth rods 2 in the comb-shaped joint member 1 and the tip of the tooth rod 2 disposed in the groove. A filler elastic material 5 made of an elastic material such as rubber is provided, and one end and the other end of the filler elastic material 5 are provided.

In the road comb type expansion joint having a filler elastic material fixed to the deep part of the groove between the adjacent tooth rods 2 and the tip of the tooth rod 2, one end of the filler elastic material 5 is fixed. A corrugated spring steel plate spring 4 is buried therein, bending and extending in a zigzag manner in the width direction of the filler elastic member from one end to the other end, and mounting brackets 5 are fixed to both ends of the spring steel corrugated plate spring 4. This is a comb-type expansion joint for roads having a corrugated leaf spring embedded filler elastic member fixed to the deep part of the groove between the tooth rods 2 and the tip of the tooth rod 2.

〔Example〕

Next, the present invention will be explained in detail using illustrated examples.

5 and 5 show a corrugated plate embedded filler elastic material 9 used in an embodiment of the present invention, in which a filler elastic material filter made of an elastic material such as rubber,
A corrugated leaf spring 4 made of spring steel that bends and extends in a zigzag manner in the width direction of the filler elastic material from one end to the other end is embedded integrally, and the waveform of the intermediate part of the corrugated leaf spring 4 is V-shaped in plan. It has become. A bolt insertion hole 12 is provided in a bracket 11 that is integrally connected to the upper part of the leaf spring mounting plate 10.
and a selt head housing recess 13 are provided to constitute a mounting bracket 5. This mounting bracket 5 is made of cast steel, for example. The plate spring mounting plate 10 is abutted and fixed by welding or rivets 14, and a recess 15 is located between the waveform portions of the spring steel waveform plate spring 4 at the upper and lower portions of the filler elastic material 5. , 16 are provided,
Further, the upper surface of the mounting bracket 5 is covered with a rubber material.

FIGS. 1 and 2 show a corrugated leaf spring embedded filler elastic material according to an embodiment of the present invention using the waveform leaf spring embedded filler elastic material 9! This shows a comb-shaped expansion joint for roads, in which the tooth rods 2 of a pair of metal comb-shaped joint members 1 are engaged with each other, and the grooves between the adjacent tooth rods 2 in the comb-shaped joint member 1 are interlocked with each other. A filler elastic material filter and a leaf spring mounting plate 10 in the waveform leaf spring embedded filler elastic material 9 are arranged between the tip of the tooth rod 2 disposed inside the filler elastic material 9, and 90 Brackets 11 on both ends
The mounting melt 18 is fitted into the recess 17 provided on the upper surface of the comb-shaped joint member 1 on the side of the inner part and the upper surface of the tip of the tooth rod 2, and the mounting melt 18 inserted into the gel insertion hole 12 of the bracket 11 is inserted into the recess 17. Screw hole 1 provided at the bottom
9, and the head of the mounting bolt 18 is accommodated in the bolt head accommodating recess 15.

〔Effect of the invention〕

According to the present invention, a filler elastic material 5 made of an elastic material such as rubber is provided between the groove between adjacent tooth rods 2 in the comb-shaped joint member 1 and the tip of the tooth rod 2 disposed in the groove. A corrugated leaf spring 4 made of spring steel is embedded in the filling elastic material 5, and the spring steel corrugated plate spring 4 is bent and extended in a zigzag shape in the width direction of the filling elastic material from one end to the other end thereof. Since the mounting brackets 5 fixed to both ends of the waveform leaf spring 4 are fixed to the inner part between the toothed rods 2 and the tip of the toothed rod 2, the shortening operation of the comb-shaped expansion joint allows the installation of the waveform leaf spring to be shortened. When the filler elastic material 9 is compressed or when a load is applied to the upper surface of the filler elastic material filter made of elastic material, the corrugated leaf spring embedded filler elastic material 9 is bent downward by the strong spring steel corrugated leaf spring 4. Therefore, the bicycle running and walking properties of the upper surface of the elastic material-made elastic material 5 can be completely improved.Furthermore, the spring steel corrugated leaf spring 4 is made of elastic material. Since the material 6 is bent and extended in a zigzag shape in the width direction from one end of the material 6 to the other end, it has the effect of being able to easily expand and contract while exhibiting strong deflection prevention properties. can get.

[Brief explanation of the drawing]

1 and 2 show a comb-type expansion joint for roads having a corrugated leaf spring embedded and a filler elastic material according to an embodiment of the present invention, in which FIG. 1 is a plan view and FIG. 2 is a plan view. FIG. 3 is a longitudinal side view showing the installed state of the corrugated leaf spring embedded filler elastic material. 5 and 5 show a corrugated leaf spring embedded filler elastic material used in an embodiment of the present invention, in which FIG. 5 is a plan view, FIG. 4 is a side view, and FIG. 5 is a longitudinal section. FIG. FIG. 6 is a plan view showing a conventional comb-shaped expansion joint for roads having a filler elastic material, and FIG. 7 is a longitudinal sectional side view showing a part of the same. In the figure, 1 is a metal comb-shaped joint member, 2 is a tooth rod, the loop is an elastic filler made of elastic material, 4 is a corrugated leaf spring made of spring steel, and 5 is a comb-shaped joint member made of metal.
9 is a mounting bracket, 9 is a corrugated leaf spring embedded filling elastic material, 10 is
1 is a leaf spring mounting plate, 11 is a bracket, 14 is a rivet,
17 is a recess, 18 is a mounting bolt, and 19 is a screw hole.

Claims (1)

[Claims] The tooth rods 2 of a pair of metal comb-shaped joint members 1 are engaged with each other, and between the groove between adjacent tooth rods 2 in the comb-shaped joint member 1 and the tip of the tooth rod 2 disposed in the groove. A filler elastic member 3 made of an elastic material such as rubber is provided in the holder, and one end and the other end of the filler elastic member 3 are connected to the deep part of the groove between the adjacent tooth rods 2 and the tooth rod 2. In a comb-type expansion joint for roads having a filler elastic member fixed to the tip, the filler elastic member 3 is bent in a zigzag shape in the width direction of the filler elastic member from one end to the other end. A spring to be extended, a steel corrugated plate spring 4, is embedded, and a mounting bracket 5 fixed to both ends of the spring steel corrugated plate spring 4 is installed at the deep part of the groove between the toothed rods 2 and at the tip of the toothed rod 2. A comb-shaped expansion joint for roads having a corrugated leaf spring embedded and a filler expansion member fixed to the comb-shaped expansion joint.