JP2010274441A - Apparatus and method for slit formation - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To perform work without generating noise, to accelerate work speed, and to elongate a durable distance. <P>SOLUTION: Three or four rotary blades 131 are attached in the same axis in parallel on a wall saw 130. A rail 120 is fixed by the side of the position where a slit is formed on a wall 200 by fixing means 110 and 111 in such a way that the wall saw 130 can be moved horizontally. The wall saw 130 is moved in the direction of the wall 200 through a forward-and-backward moving means 140 while starting the wall saw 130, and the wall saw 130 is moved vertically on the rail 120 by a vertically moving means as it is. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a slit forming apparatus and a slit forming method, and more particularly to a slit forming apparatus and a slit forming method for forming a slit in a wall body using a wall saw.

Conventionally, for the purpose of seismic reinforcement for existing buildings, a seismic reinforcement method that prevents the building from collapsing by forming a slit in the wall of the pillar and not transmitting the stress applied to the pillar to the wall. It has been known.
In forming this slit, a slit was formed by making a slit in the slit width with a wall saw and sandwiching the wall between the cuts.

  However, since an electric hammer or the like is used when hanging, noise becomes a problem. Therefore, a method of forming a slit without using a special bit has been proposed (for example, see Patent Document 1).

JP 2002-36232 A

However, according to the bit described in Patent Document 1, there is a problem that the working speed is slower than that of the wall saw and the working distance is short, so that the material cost is increased.
The present invention has been made in view of these points, and an object of the present invention is to provide a slit forming apparatus that can operate without generating noise and that has a high working speed and a long service distance.

  In the present invention, in order to solve the above problem, in a slit forming apparatus for forming a slit in a wall body using a wall saw, the wall saw is moved in the vertical direction beside the slit forming position in the wall body. Fixing means for fixing the rail as possible, vertical movement means for moving the wall saw in the vertical direction by moving on the rail, and the wall saw in the longitudinal direction with respect to the wall body The slit forming apparatus is characterized in that the wall saw is provided with three or four rotary blades mounted in parallel on the wall saw.

  Thereby, three or four rotary blades are coaxially attached in parallel to the wall saw, and the wall saw is moved in the vertical direction beside the position where the slit is formed in the wall body by the fixing means. The rail is fixed so as to be movable, and the wall saw is started and moved in the direction of the wall body by the front-rear direction moving means. In the state as it is, it is moved on the rail by the vertical direction moving means. Move the wall saw up and down.

  Further, in the present invention, in the slit forming method for forming a slit in the wall body using a wall saw in which 3 to 4 rotary blades are coaxially attached in parallel, the slit in the wall body is formed. A rail is fixed next to the position so that the wall saw can be moved in the vertical direction, and the wall saw is moved to the upper end of the slit to be formed by moving on the rail to operate the wall saw. Moved in the direction of the wall body, moved to the lower end of the slit to be formed in a state where the wall saw is operated, moved the wall saw away from the wall body, By inserting a bar into the outermost cutting groove of the three or four cutting grooves formed in parallel, cracks are made between the cutting grooves of the wall body, Slit forming method characterized by forming a slit is provided by withdrawing a wall containing the serial cracks.

  Thus, the rail is fixed so that the wall saw can be moved in the vertical direction beside the position where the slit is formed on the wall body, and the wall saw is moved on the rail to form the wall saw. Move to the upper end, move in the direction of the wall when the wall saw is activated, move to the lower end of the slit to be formed with the wall saw activated, and move the wall saw to the wall The bar is inserted into the outermost cutting groove of the three or four parallel cutting grooves formed by the wall saw, and cracks are made between the cutting grooves of the wall body. The wall body containing the cracks is extracted.

  According to the slit forming apparatus and the slit forming method of the present invention, three or four rotary blades are coaxially attached to the wall saw in parallel, and the wall saw is used to form a slit in the wall body by a fixing means. The rail is fixed next to the position so that the wall saw can be moved in the vertical direction, and the wall saw is started and moved in the direction of the wall body by the forward / backward moving means. The wall saw can be moved in the vertical direction by moving up, so that a bar can be inserted into the outermost cutting groove of the three or four parallel cutting grooves formed by the wall saw. Since cracks can be inserted between the cut grooves and the wall with cracks can be removed, work can be done without making noise, and the work speed can be increased. Useful distance is long. Further, since the slit is formed by extracting the wall body in a fixed state, the amount of noro generated by cutting the wall body can be remarkably reduced.

It is a top view of the slit formation apparatus of this Embodiment. It is a front view of the slit formation apparatus of this Embodiment.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
FIG. 1 is a top view of the slit forming apparatus of the present embodiment, FIG. 1 (A) is a top view of a state in which a wall saw blade is in contact with a wall body, and FIG. It is a top view of the state which is cutting the wall body with the blade of a wall saw.

  As shown in FIG. 1, the slit forming apparatus 100 is attached to a wall body 200. More specifically, the fixed foot 110 is fixed to the wall body 200 forming the slit by the anchor 111, and the rail 120 is attached to the fixed foot 110.

  As shown in FIG. 2, the rail 120 is for allowing the wall saw 130 to move up and down, and extends in the vertical direction of the wall body 200. A gear is attached to the rail 120 so as to mesh with a rack formed on the rail 120, and the wall saw 130 can be moved up and down by rotating the gear.

  In addition, the slit forming device 100 is provided with a position moving mechanism 140 for moving the wall saw 130 in the front-rear direction with respect to the wall surface of the wall body 200, and the thread formed on the shaft of the handle 141 is connected to the rail. The wall saw 130 can be moved in the front-rear direction with respect to the wall surface of the wall body 200 by being screwed into a female screw thread formed beside 120.

  The cutter 131 of the wall saw 130 is configured so that three blades are coaxially mounted and rotate simultaneously. For example, in order to form a slit of 30 mm, the diameter of each cutter blade is The cutter blade thickness is set to 473 mm, the cutter blade thickness is set to 3.2 mm, and the cutter blade interval is set to 10.2 mm.

  As a procedure for forming the slit by the slit forming apparatus 100, the fixing foot 110 of the slit forming apparatus 100 is fixed to the position of forming the slit of the wall body 200 by the anchor 111 laterally.

  Next, the wall saw 130 is moved to the uppermost position, the wall saw 130 is started, and the cutter 131 is rotated. Then, the wall saw 130 is moved in the direction of the wall body 200 by the position moving mechanism 140 to start cutting.

  When forming a partial slit that leaves a part of the wall thickness, the wall saw 130 is moved downward along the rail 120 after insertion to the thickness of the slit forming the cutter 131. When the cutting of the wall 200 is completed to the lowest part, the wall saw 130 is moved away from the wall 200 by the position moving mechanism 140. When the cutting with the wall saw 130 is completed, the slit forming apparatus 100 is detached from the wall body 200.

  Further, when forming a through slit for penetrating the wall body 200, after the cutter 131 is inserted until the wall body 200 is penetrated, the wall saw 130 is moved downward along the rail 120 and cut.

  Through the above steps, three cutting grooves arranged in the vertical direction are formed at locations where the slits of the wall body 200 are to be formed. A bar is inserted into the groove at both ends of the cut groove, and a force is applied in the direction of the groove formed at the center.

  Thereby, in the case of all slits, cracks enter the upper and lower end portions of the wall body 200 between the formed grooves, and the wall body 200 between the grooves can be pulled out as it is to form a slit. Moreover, in the case of a partial slit, it is possible to form a slit by pulling out the wall body 200 between the grooves with cracks in the upper and lower end portions and the roots of the wall body 200 between the formed grooves.

  Therefore, the working time can be reduced as compared with the case where the slit is formed by flapping or the case where the slit is formed using a special bit, and the slit can be formed without crushing or scraping the wall body 200. Therefore, the amount of scrap and the like can be significantly reduced.

  Thus, in order to use the method of inserting cracks into the upper and lower ends and the base of the wall 200 between the grooves by inserting a bar into the formed grooves, The length of must be somewhat short. That is, if the length between the cut grooves is long, cracks do not enter between the cut grooves when a force is applied with a bar, and there is a risk that the portions other than the slits that are formed and which are weak in strength will enter. There is.

  For example, in the case of forming a partial slit, if cracks enter in the thickness direction of the wall body 200, if the wall is an outer wall, the crack enters the thickness direction and rainwater enters the room. It becomes a serious problem such as forgiving. In other words, where the cracks enter is an important issue.

  On the other hand, if the number of blades of the cutter 131 is increased too much in order to shorten the interval between the cutters 131, the weight becomes extremely heavy, so three or four is appropriate. That is, if the wall saw 130 is too heavy, the wall saw 130 cannot be attached to or detached from the wall 200, and the slit forming method according to the present embodiment cannot be realized.

  Furthermore, in order to form a plurality of cutting grooves in parallel, it is not always necessary to use a wall saw having a plurality of blades on the same axis, but since the wall saw is heavy, in order to form it straight on the wall body It is necessary to fix rails.

  Therefore, in order to form a plurality of cutting grooves in parallel using a single-blade wall saw, the process of fixing the rail as many times as the number of cutting grooves to be formed, forming the cutting groove, and removing the rail is repeated. In consideration of the necessity, it is more effective to use a wall saw having a plurality of blades on the same axis.

  Further, in order to form a plurality of cutting grooves in parallel using a single-blade wall saw, a lateral movement means may be added to the slit forming apparatus so that the wall saw can be moved in the lateral direction. Considering an increase in the manufacturing cost of the apparatus by providing the left-right direction moving means and an increase in the transportation cost of the slit forming apparatus by increasing the weight by providing the left-right direction moving means, a plurality of blades are coaxially arranged It is more effective to use a wall saw.

DESCRIPTION OF SYMBOLS 100 Slit formation apparatus 110 Fixed leg 111 Anchor 120 Rail 130 Wall saw 131 Cutter 140 Position moving mechanism 141 Handle 200 Wall body

Claims (4)

In a slit forming apparatus for forming a slit in a wall body using a wall saw,
Fixing means for fixing the rail so that the wall saw can be moved in the vertical direction beside the position where the slit is formed in the wall,
A vertical movement means for moving the wall saw in the vertical direction by moving on the rail;
A front-rear direction moving means for moving the wall saw in the front-rear direction with respect to the wall body;
With
A slit forming apparatus, wherein three to four rotary blades are coaxially attached to the wall saw in parallel.   The slit forming apparatus according to claim 1, wherein an interval between the blades attached in parallel is 10 mm.   The slit forming device according to claim 1 or 2, wherein a diameter of the blades attached in parallel is 50 cm. In a slit forming method for forming a slit in a wall body using a wall saw in which 3 to 4 rotary blades are coaxially attached in parallel,
Fix the rail so that the wall saw can be moved vertically next to the position where the slit is formed in the wall,
Move on the rail to move the wall saw to the upper end of the slit to be formed,
Move in the direction of the wall body with the wall saw activated,
With the wall saw activated, move to the lower end of the slit to be formed,
Moving the wall saw away from the wall,
By inserting a bar into the outermost cutting groove of the three or four parallel cutting grooves formed by the wall saw, a crack is put between the cutting grooves of the wall body,
A slit forming method, wherein the slit is formed by extracting the wall body including the crack.

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