JPH0852731A - Cutting device for steel expansion joint draining part - Google Patents

Abstract

PURPOSE:To horizontally move a cutting device by running the cutter on a guide rail and to dispose it at the cut position of a draining part along the rail by hanging or bridging between beam coupling plates by pressing a horizontally moving handle. CONSTITUTION:A motor 6 stopped at a predetermined position by a stopper 10 is started to rotate a cutter blade 2 from above to below with respect to a cut section, vertically moving handle 13 is lifted, and cut to the maximum cut depth of the blade 2. A horizontally moving handle 14 is pressed as it is to continue cutting in the expansion joint axial direction along a guide rail 5 or after cutting, the handle 12 is returned to the original position, and the handle 14 is lifted by a left hand, moved along the rail 5, again the handle 13 is lifted by the right hand, cut to the maximum depth of the blade 2, and the operation is repeated.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a drainage cutting device for a steel expansion joint.

[0002]

2. Description of the Related Art Drainage of rainwater or the like collected in a finger play is carried out via a drainage plate C, a drainage plate C1 installed between the end faces of F, and a gutter C2 as shown in FIG. Be drained.

Recently, in an existing steel expansion joint, the drainage portion C as described above is cut and removed, and a seal rubber is inserted between the finger portion G and a clearance D between the end faces of the floor slab to prevent drainage. Is being attempted.

The work of cutting and removing the drainage part is usually performed by an operator climbing to the top of the bridge pier A or the abutment, applying a rotary blade that rotates electrically with a concrete cutter to the cutting point, and I was moving while moving on the pier or abutment in the axial direction.

However, the height from the top end of the pier or abutment to the cutting point is not constant, and the work in a low posture or the work requiring a scaffold is forced, and the clearance between the floor slabs facing each other is narrow. The worker is forced to work in a cramped posture, and work with a heavy concrete cutter is not easy and workability is extremely poor.

[0006] Further, such work is usually carried out with the traffic open, so that great care must be taken not to scatter the sparks generated during cutting on the road surface.

[0007]

DISCLOSURE OF THE INVENTION The present invention has the problem that the worker climbs to the top of the pier or abutment and cuts the drainage portion with the concrete cutter carried by him, resulting in poor workability and sparks generated during cutting. The problems of the scattering of the above on the road surface are to be solved by the following points respectively.

[0008]

[Means for Solving the Problems] The above-mentioned problems are solved by providing a rotary cutter blade (hereinafter simply referred to as a cutter blade) which rotates upward from a cutting surface of a drainage portion upward by a rotation of a motor in a width direction of a play. In addition to being movable, it consists of a base with a vertical movement handle and a traveling base with a horizontal movement handle.The base is overlaid on the traveling base, and one end is hinged to the main body. To solve the problem by providing a cutting device for a steel expansion joint drainage part, which is hung between connection plates or laid on a girder connection plate so as to be horizontally moved along a guide rail installed in the expansion joint axial direction.

The present invention has the following operations by the above means. The cutting device that hangs between the girder connecting plates or hangs over the girder connecting plates and follows the guide rails moves horizontally on the guide rails by pushing the horizontal moving handle, and is positioned at the cutting point of the drainage part. . Since the cutter blade moves in the play width direction, it is possible to align the cutter blade with a cutting place as close as possible between the floor slab end faces.
After the alignment is completed, operate the vertical movement handle with one hand to put it on the cutting point, and push the horizontal movement handle with the other hand to move it horizontally. The cutting device cuts the drainage portion by rotating a cutter blade that is rotated by a motor while moving horizontally.

Further, by rotating the cutter blade from the upper side to the lower side with respect to the cut surface of the drainage portion, it is possible to prevent the sparks from scattering on the road surface.

[0011]

Next, embodiments of the present invention will be described with reference to the drawings. 1 is a front view of a cutting device along a guide rail suspended using a jig between girder connecting plates, FIG. 2 is a plan view of the same, and FIG. 3 is a view taken along the line AA of FIG. 4, FIG. 5 and FIG. 5 are the same operation diagrams, and FIG. 6 is an explanatory diagram of the cutting device along the guide rails bridged over the girder connecting plate.

In FIGS. 1, 2, and 3, 1 is a main body, 2
Is a cutter blade, 3 is a base, 4 is a traveling base, and 5 is a guide rail. The main body 1 travels horizontally along a base 3 and a guide rail 5 provided with a cutter blade 2 which rotates on the upper surface with respect to the cut surface of the drainage portion C from the top to the bottom so as to be movable in the play width direction. It consists of a carriage 4.

The cutter blade 2 is formed of a disc-shaped grindstone, and is axially coupled to the motor shaft of the motor 6 so as to rotate from top to bottom with respect to the cut surface of the drainage portion C. 1
2 is a cover of the cutter blade.

A mounting table 7 is fixedly mounted on the upper surface of the base 3 with bolts 11 and the like, and a motor 6 having a cutter blade 2 is connected to the mounting table 7 slidably in the width direction.
A vertically movable handle 13 is attached to the lower surface. The motor 6 and the mounting table 7 are connected to each other by the sliding table 9 that supports the motor table 8 and the mounting table 7 of the motor 6 from both sides. It is slidable with respect to the mounting table 7 in the space width direction. 10 is a stopper. In addition, the cutter blade 2 and the vertical moving handle 13
As will be described later, since the base 3 and the traveling base 4 are directly or indirectly hinge-coupled to rotate the base 3, the base 3 is preferably located at a position apart from the hinge joint portion.

The traveling table 4 has a horizontal moving handle 14 on its upper surface.
Stack the connecting plate 15 with the guide rail 5 inside.
A rail hole 17 is formed along the line.

As for the base 3 and the traveling base 4, the base 3 is the traveling base 4
Is indirectly laminated via the connection plate 15, and the connection plate 15 and the end portion of the base 3 are hinge-coupled 16 to form the main body 1 as a whole.

The guide rail 5 connects the main girder B and the main girder B, which are opposed to each other with the upper clearance D of the pier A shown in FIG.
Girder connection plate E forming a span in the expansion joint axial direction,
Suspend between E. The guide rail 5 is suspended by stacking the plates and hooking the upper bent portion 19 above the girder connecting plate E to fix the bent portion 19 with a fixture 20.
This is performed by holding the guide rail 5 on the rail mounting portions 21 provided on the facing surfaces of 8 and 18. In this embodiment, since the guide rail 5 is inserted into the rail hole 17 of the traveling table 4 to move the main body 1 along the guide rail 5, the guide rail 5 is attached to the jig 18 by guiding the main body 1. Make it along the rails 5 before doing.

In the cutting device thus constructed, the drainage portion is cut by first pushing the horizontal moving handle 14 with the left hand to move the main body 1 to the cutting position of the drainage portion C as shown in FIGS. Slide the slide base 9 shown in 1 on the mounting base 7,
Move the cutter blade 2 together with the motor 6 in the play width direction so that the cutter blade 2 is positioned as close as possible to the end face of the floor slab, and start the motor 6 stopped with the stopper 10 at a predetermined position to move the cutter blade 2 to the cut surface. On the other hand, rotate from top to bottom to push up the vertical movement handle 13 and cut to the maximum cutting depth of the cutter blade 2, and then push the horizontal movement handle 14 to continue cutting along the guide rail 5 in the axial direction of the expansion joint or to cut. After that, the vertical movement handle 13 is once returned to the original position, the horizontal movement handle 14 is pushed by the left hand to move along the guide rail 5, and the vertical movement handle 1 is again moved.
3 is pushed up with the right hand to cut to the maximum cutting depth of the cutter blade 2, and this operation is sequentially repeated. When the cutting work on this span is completed, the main body 1 and the guide rail 5 may be transferred together with the jig 18 between the girder connecting plates forming another span. You may transfer together with 5.

In FIG. 6, the guide rails 5 are fixed by bridging on the girder connecting plates E connecting the main girders B and the main girders B on the pier A in the expansion joint direction. Basically, the main body 1 has a cutter blade 2 provided on a base 3 as in the above-described embodiment, and the base 3 is united with a traveling base 4 so as to be hinge-rotatable. The procedure for cutting the drainage portion C is the same as in the previous embodiment, and the main body 1 is moved along the guide rails 5 in the axial direction of the expansion joint. The feature of this embodiment is that the guide rail 5 is laid over each girder connecting plate E,
It has the advantage that the body 1 does not have to be transferred for each span.

In the above-mentioned embodiment, the portion expressed as a bridge pier can be rephrased as an abutment.

[0021]

Since the present invention is constructed as described above,
It has the following effects. First, it consists of a base equipped with a cutter blade and a travel base that travels on a guide rail.The main body hinged to each other moves up and down by the hinge rotation of the base so that the cutter blade can be moved up and down simply by operating the handle. Therefore, the size can be reduced as a whole, and the guide rail can be hung between the girder connecting plates having no space in the upper and lower directions or can be installed along the guide rail installed on the girder connecting plates. In addition, by making the cutter blade movable in the play width direction, it is easy to align the drainage part with the predetermined cutting point and move the main body along the guide rail in the axial direction of the expansion joint. With such a structure, the drainage part can be easily cut in the axial direction of the expansion joint, and the workability can be greatly improved. Further, since the cutter blade has a structure in which the motor is rotated to rotate the cutting surface from top to bottom, it is possible to suppress the scattering of the sparks on the road surface.

[Brief description of drawings]

FIG. 1 is a front view of a cutting device along a guide rail whose main body is suspended between girder connecting plates using a jig.

FIG. 2 is a plan view of a cutting device along a guide rail whose main body is hung between the girder connecting plates using a jig.

FIG. 3 is a view taken along the line AA of FIG.

FIG. 4 is an operation diagram of the cutting device along the guide rails in which the main body is suspended between the girder connecting plates using a jig.

FIG. 5 is a final operation diagram of the cutting device along the guide rails in which the main body is suspended between the girder connecting plates by using a jig.

FIG. 6 is an explanatory view of a cutting device along a guide rail whose main body is bridged over a girder connecting plate.

FIG. 7 is an explanatory view of a conventional steel expansion joint drainage section.

[Explanation of symbols]

 1 ... Main body 2 ... Cutter blade 3 ... Base 4 ... Traveling base 5 ... Guide rail 6 ... Motor 7 ... Mounting stand 8 ... Motor stand 9 ... Sliding stand 10 ... Stopper 13 ... Vertical move handle 14 ... Horizontal move handle 16 … Hinge connection 18… Jig C… Drainage part E… Girder connection plate

Claims (1)

[Claims] 1. A base provided with a rotary cutter blade, which is rotated upwards and downwards by a rotation of a motor with respect to a cut surface of a drainage portion, so as to be movable in a width direction of a clearance, and in addition, has a vertical movement handle. And a traveling platform equipped with a horizontal moving handle, a base is overlaid on the traveling platform, and one end of the main body is hingedly connected to the girder coupling plate to suspend or bridge the girder coupling plate for expansion joints. A cutting device for a steel expansion joint drainage part, which is arranged along a guide rail installed in the axial direction so as to move horizontally.