JP2004148692A - Concrete cutter and its assembling method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a concrete cutter for which a base can be assembled after fixing a rail even when there is no space equivalent to the base width on the rail end which is fixed to a wall or a floor or the like in the concrete cutter having the base which runs along the rail under a state wherein the rail is pinched by rollers or the like while a pair of the rollers or the like pinching the rail are provided in the longitudinal direction of the rail with a proper interval, and a wheel-like cutter which is removably assembled onto the base and is rotate-driven by a motor. <P>SOLUTION: The rollers 4 which pinch the rail 1 are provided while the positions are diagonally shifted, and the interval between the rollers 4 is widened. The assembling of the base 2 onto the rail 1 is performed in such a manner that the rail end is inserted between the leading or following rollers 4 first under a state wherein the base 2 is tilted, and the rail end is inserted between the remaining rollers 4 after returning the base to the horizontal state. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a concrete cutter used for cutting concrete floors and walls (hereinafter, simply referred to as "walls") and forming grooves and slits for plumbing work and seismic reinforcement work on walls and the like. And its assembling method.
[0002]
[Prior art]
FIG. 1 shows a concrete cutter of this type, in which a rail 1 fixed to a wall or the like, and a base 2 mounted on the rail 1 so as to be able to run thereon are shown. And a wheel cover removably attached to a base 2 and a blade cover 3 for covering the wheel-like blade. The base 2 sandwiches the rail 1 up and down with a pair of rollers 4 arranged in the front and rear (left and right in FIG. 1). The rails 1 travel along the rails 1. The feed is performed by rolling a pinion on a rack attached to the rails 1. The base 2 is provided with a motor 5 for rotating and driving the blades. Further, a feed motor section M for rotating and driving the pinion is detachably mounted.
The details of the blade and its mounting structure are disclosed in Patent Document 1.
[0003]
At the time of construction, the rail 1 is first fixed along the cut portion, and then the roller 2 is applied to the rail end by inserting and inserting the base 2 onto the rail by sandwiching the rail 1 between the rollers 4 and then mounting the blade. Although the blade cover 3 is mounted as disclosed in Patent Document 1, the base 2 is inserted along the rail 1 from the rail end side so that the base 2 can be mounted. As shown in (1), it is necessary to secure at least a space larger than the base width B.
When a space of the base width B cannot be secured at the rail end, the base 2 is mounted on the rail 1 and then fixed to a wall or the like.
[0004]
[Problems to be solved by the invention]
If a space corresponding to the base width B cannot be secured at the rail end, it is necessary to attach the base 2 to the rail 1 and then fix it to a wall or the like as described above. It is heavy and difficult to work alone.
[0005]
The present invention provides a concrete cutter capable of assembling a base after fixing a rail even when a space corresponding to a base width cannot be secured at a rail end, and a method of assembling the concrete cutter. With the goal.
[0006]
[Means for solving the problem]
The invention according to claim 1 provides a pair of rollers or wheels (hereinafter, simply referred to as "rollers") that sandwich the rail at appropriate intervals along the longitudinal direction of the rail, and the rail is sandwiched by the rollers or the like. In a concrete cutter having a wheel-shaped cutter that is detachably assembled to the base and that is rotatably driven by a motor, a roller that sandwiches the rail is provided at a position shifted in the longitudinal direction of the rail. It is characterized by being able to.
[0007]
As shown in FIG. 2, in the conventional example in which the pair of rollers 6 are provided without shifting the position, if the distance c between the rollers 6 and the thickness d of the rail 7 are the same, the base 8 is Can be inserted only from the direction of the arrow parallel to the above, and a space of a base width B is required at the rail end to allow the base 8 to be inserted in the lateral direction. However, as shown in FIG. If the parts 6 are provided at shifted positions, the distance d 'between the rollers 6 expands (d'> d), so that the base 8 is inclined as shown in FIG. The rail can be inserted, and the space b required at the rail end can be smaller than the base width B. After the rail ends are inserted between the leading rollers 6 and the like, the base 8 is returned to a horizontal position while moving the leading rollers 6 and the like along the rails 7. 6 is placed on the end of the rail (FIG. 5), and then pushed into the rail 7 in the direction of the arrow.
[0008]
As another method, as shown in FIG. 6, in a state in which the leading roller 6 is lifted and supported on the rail 7, the subsequent roller 6 is inserted into the rail end first, and the rail is left as it is. Move along 7 to the other rail end. When the lower roller 6 among the pair of upper and lower rollers 6 comes off the rail end when the other rail end is reached, the base 8 falls down and the upper roller 6 engages with the rail end (FIG. 7). ). When the base 8 is pushed in the direction opposite to the direction of the arrow in FIG. 7 in this state, the rail 7 is sandwiched between the pair of front and rear rollers 6 and the like, as shown in FIG. In this case, as shown in FIGS. 6 and 7, spaces b2 and b3 are required at both ends of the rail 7, but b2 + b3 <B, which is smaller than the base width B.
[0009]
According to the concrete cutter of the present invention, as described above, the base can be tilted and assembled to the rail by any of the methods, and the space at the rail end side required for tilting the base to the rail is reduced. be able to.
The invention according to claim 2 relates to the former method shown in FIGS. 4 and 5 in the concrete cutter according to claim 1 and moves by tilting a base and inserting a rail end between a pair of leading rollers or the like. Then, the base is attached to the rail by returning the inclination of the base to a horizontal position, inserting the rail end between a pair of subsequent rollers or the like, and pushing in the rail.
[0010]
The invention according to claim 3 relates to the latter method shown in FIGS. 6 and 7, in which the base roller is tilted so that the leading roller or the like is lifted up on the rail, and then the subsequent roller or the like is inserted into the rail end first. When the top roller, etc. reaches the other rail end, return the base to the horizontal position, apply the space between the top roller, etc. to the other rail end, then insert it in the opposite direction and push it in. The feature is that the base is assembled to the rail.
[0011]
BEST MODE FOR CARRYING OUT THE INVENTION
FIG. 8 shows a concrete cutter base according to the present invention. In the drawing, components having the same structure as that shown in FIG. 1 are denoted by the same reference numerals.
In the base 2 shown in FIG. 8, the pair of front and rear rollers 4 are obliquely displaced so that the interval between the upper rollers 4 is narrower and the interval between the lower rollers 4 is wider. Are arranged in a trapezoidal shape.
When assembling the base 2 of this embodiment to the rail 1, it can be assembled by any of the methods shown in FIGS. 4 and 5 or the methods shown in FIGS.
[0012]
【The invention's effect】
ADVANTAGE OF THE INVENTION According to this invention, even if there is no space corresponding to the base width at the rail end by assembling the base to the rail by inclining the base, it is possible to mount the base after fixing the rail as in the case where there is sufficient space. Therefore, even if there is no space at the rail end, there is no need to fix the base to the rail beforehand, so that only one person can perform the assembling work.
[Brief description of the drawings]
FIG. 1 is a front view of a conventional concrete cutter.
FIG. 2 is a view showing an arrangement of rollers and the like of a conventional type.
FIG. 3 is a diagram showing an arrangement of rollers and the like according to the present invention.
FIG. 4 is a diagram showing a method of assembling a base.
FIG. 5 is a diagram showing a state where a subsequent roller or the like is inserted into a rail end;
FIG. 6 is a diagram showing another example of a method of assembling a base.
FIG. 7 is a diagram showing a state when a leading roller or the like is inserted into a rail end;
FIG. 8 is a front view of a base according to the present invention.
[Explanation of symbols]
1, 7, rail 2, 8, base 3, blade cover 4, roller 5, motor 6, roller, etc.

Claims (3)

A pair of rollers etc. that sandwich the rail are provided at appropriate intervals along the length of the rail, and a base that runs along the rail while sandwiching the rail with the rollers etc. A concrete cutter having a wheel-shaped cutter that is driven to rotate, wherein a roller or the like sandwiching the rail is provided at a position shifted in the longitudinal direction of the rail. The method for assembling concrete to a rail according to claim 1, wherein the base is tilted to insert and move the rail end between a pair of leading rollers and the like, and the inclination of the base is returned to a horizontal position, and a pair of subsequent bases is tilted. An assembling method, wherein the base is attached to the rail by inserting and pushing the rail end between rollers or the like. The method for assembling a concrete to a rail according to claim 1, wherein a base roller is tilted so that a leading roller or the like is lifted up on the rail, and a subsequent roller or the like is inserted into a rail end first and moved to move the leading roller or the like. When the rollers, etc. reach the other rail end, return the base to the horizontal position, apply the space between the first roller, etc. to the other rail end, then insert it in the opposite direction and push it in. An assembling method characterized by assembling.

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