JP2003266195A - Assembly-welding device for metallic material needing narrow gap - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a welding device with which parts are precisely and surely attached by welding to a portion having narrow gap, such as an expandable joint metal for a road bridge. <P>SOLUTION: When a clamp 3 for fitting a flexible water-guiding material for preventing the drip-down of rainwater, etc., from the expandable joint, is welded, the welding work to the clamp 3, can be performed while holding a fixed gap by using a plurality of gap-holding rollers 3 and pressure-contacting rollers 6 to fix the clamp to a prescribed position of a shaped steel 2. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an expansion joint fitting for a road bridge, which includes a clamp 3 and an L-shaped steel 1 (not shown) or a contractible rubber or urethane 4 for preventing rainwater from falling from the bridge. It is a device that is sandwiched between the H-shaped steels 2 and prevents falling of rainwater and the like, and is a device that is intended for continuous and precise assembly and processing of the clamp 3.

[0002]

2. Description of the Related Art Conventionally, the expansion and contraction part with a bridge was a comb-toothed construction method, and there was a problem in rolling due to the collapse and collapse of shogi on the Fukue Viaduct on the Hanshin Expressway during the Great Hanshin Earthquake. Also, tire noise of passing vehicles,
There was also a problem with falling rainwater. Although this method was used in the West, the clamp assembly process is made by hand, such as by using a vise to secure the gap with an iron plate, and is manually manufactured, such as by welding. There are variations in the price and it is expensive.

[0003]

SUMMARY OF THE INVENTION In order to eliminate the drawbacks of the present invention, the clamp 3 is assembled and welded at an optimum contact distance of rubber, urethane, etc. 4 so that rainwater does not leak and airtightness of the welded portion is eliminated. Research and development was carried out with the aim of eliminating rainwater leakage from the welded parts by eliminating welding joints with constant automatic continuous welding.

[0004]

[Means for Solving the Problems] If a narrow gap of rubber, urethane, etc. 4 (thickness: about 9 mm) is used and two rollers 5 are created, the direction of rotation is L-shaped steel 1 (not shown) or H. It was discovered that the moving directions of the mold steel 2 and the clamp 3 were the same, and even when pressure was applied by the pressure machine 6, the strength and wear were maintained by the rotational movement of the pair of rollers 5, and the strength and material were researched and developed. However, it was discovered that the pressure contact roller 6 was able to make a close contact with each other to secure a constant gap even in a narrow gap. The unevenness of the gap due to wear during the assembly process was eliminated, and the gap was kept constant. Since the clamp (6 mm x 28 mm) 3 is manufactured by rolling a small size, there are many distortion twists, and in order to correct them straight, the straight line passes through three or more points based on the theorem. It was discovered that the clamp 3 could be straightened by installing the device at three or more places, and it was possible to sequentially straighten and assemble and weld. If the clamp 3 and the L-shaped steel 1 (not shown) or the H-shaped steel 2 were brought into close contact with each other and moved by the welding torch 10 at the optimum speed for welding and carried out, the assembly could be carried out precisely.

[0005]

BEST MODE FOR CARRYING OUT THE INVENTION The present invention is configured as described above and
The clearance between the shape steel 1 (not shown) or the H shape steel 2 and the clamp 3 was fixed and processed with an accuracy of (± 0.2), and assembled.
The adhesion of rubber, urethane, etc. 4 was good and no problem was left in the water pressure test. Conventionally, the clamps 3 are straightened one by one, but they are assembled and processed, but the clamp straightening is more expensive than the clamp allowance, and accurate straightening is difficult. According to the present invention, the straight line theorem is used. Since the gap maintaining roller 5 and the pressure contact roller 6 are arranged to correct the clamp 3, the accuracy of the measurement is good, and a product having a stable operation with a constant gap measurement at any place was obtained.

[0006]

EXAMPLE To carry out the present invention, an L-shaped steel 1 (not shown) or an H-shaped steel 2 is made into an H-shaped welding torch 10 in this apparatus.
To the welding start position, the clamp 3 is inserted between the gap maintaining roller 5 and the pressure contact roller 6 and is carried to the welding start position of the welding torch 10, and the L-shaped steel 1 (not shown) or the H-shaped steel 2 The guide roller 17 is brought into close contact, and the clamp 3 is attached to the frame 3 by the pressurizing machine 9 and the gap maintaining roller 5 and the press contact roller 6 are attached.
Optimum pressure contact with constant strength via. The clamp 3 is pressure-bonded to the L-shaped steel 1 (not shown) or the H-shaped steel 2 from above by a pressure roller 8 via a pressure roller 7. The drive pressurizer 15 applies pressure through the frame 18 and the press drive roller 16.
The driving prime mover 12 drives the L-shaped steel 1 (not shown) or the H-shaped steel 2 via the driving roller 11 and the driving chain 13, and at the same time, an arc is generated from the welding torch 10 to weld the welded portion 14, This is an apparatus that is automatically carried out through the assembly process, the correction process, and the welding process in sequence.

[0007]

EFFECTS OF THE INVENTION Since the present invention has the above-described structure, the precision of the gap is good, the adhesion of rubber, urethane, etc. 4 is good, and since there is no welding joint and there is no leakage of rainwater, there are many viaducts especially in urban areas in recent years. It is constructed, and the rolling of the earthquake is not transmitted to the adjacent bridges. It is the most suitable construction method for rolling, and it is possible to prevent rainwater from falling from the viaduct. Conventionally, this product was imported and installed, but since it is possible to manufacture highly accurate products in Japan, the installation period and procurement can be shortened, contributing to new construction or repair work.

[Brief description of drawings]

FIG. 1 is a sectional side view of a joint portion of a bridge when a product manufactured by this device is used locally.

FIG. 2 is a sectional front view taken along the line AA of FIG.

3 is a cross-sectional plan view taken along the line CC of FIG.

4 is an enlarged view of the plane view of FIG.

FIG. 5 is an enlarged dairy saving diagram of portion B in FIG.

FIG. 6 is an overall side view omitted when the apparatus is in operation.

[Explanation of symbols]

(1) is L-shaped steel. (2) is a H-shaped steel (3) is a clamp attached to L-shaped steel or H-shaped steel. (4) is a rubber or urethane that prevents rainwater from falling. (5) is a gap maintaining roller which is a pair of two rollers. (6) is a pressure contact roller that presses the clamp 3. (7) A crimping roller for crimping the clamp to the L-shaped steel 1 or the H-shaped steel 2. (8) is a pressure machine fixed to the pressure roller 7. (9) is a pressurizing device for pressurizing the press roller 6. (10) is a torch for welding the crumb 3 to the L-shaped steel 1 or the H-shaped steel 2. (11) is a drive roller for driving the L-shaped steel 1 or the H-shaped steel 2. (12) is a prime mover for driving. (13) is a transmission chain that drives the drive roller 11 from the prime mover 12. (14) is a place where the clamp 3 is welded to the L-shaped steel 1 or the H-shaped steel 2. (15) is a pressurizing device that pressurizes the pressurizing drive roller 16. (16) is a pressure driving roller for stably driving the L-shaped steel 1 or the H-shaped steel 2. (17) is a guide roller for guiding the L-shaped steel 1 or the H-shaped steel 2 in and out. (18) is a frame for transmitting a pressing force to the pressure driving roller 16. (19) is a frame for connecting the pressure contact rollers 6 arranged at three or more places. (20) is a frame for connecting the gap maintaining rollers 5 arranged at three or more places.

Claims (2)

[Claims] 1. A clamp 3 combines two pairs of gap maintaining rollers 5 in a designated gap, and incorporates them so that the gap maintaining rollers 5 that can rotate in the carry-out direction rotate. Optimum clamp 3 is L that does not leak rainwater due to rubber, urethane, etc.
A gap maintaining device that pressurizes the pressure contact roller 6 that is essential to sandwich the clamp 3 and maintains a constant gap so as to maintain a specified space and an assembly angle with the steel mold 1 or the H steel mold 2. 2. In order to correct the distortion and twist of the clamp 3, three or more points are set in claim 1, and the straight line is a straight line.
A straightening device that straightens the clamp 3 based on the theorem that passes through points or more and crimps the clamp 3 to the L-shaped steel 1 or the H-shaped steel 2 with a pressure roller 8 to weld them.