JP3014916U - Cutting machine for crack repair - Google Patents

Abstract

(57) [Abstract] [Purpose] It is possible to completely prevent the scattering of dust that occurs during cutting, and to easily cut with a constant groove width and depth without requiring skill or effort, and to easily change the cutting depth. Provide a cutting machine for crack repair that is easy to use. In a cutting machine for repairing cracks, a rotary blade 1 for cutting cracks 2 is covered with a cover 3, and a hose 5 of a dust collector 4 is connected to the cover 3 so as to communicate with the inside of the cover 3.
The outer surface of the cover 3 has a repair surface 1 on the side of the crack 2.
A posture holding body 9 is provided which is in contact with 0 to prevent rolling during cutting. A fixed cover 3a for fixing the cover 3 to the cutting machine main body 7 and an operation cover 3 for collecting the dust in cooperation with the fixed cover 3a and contacting the lower edge 11 with the repair surface 10.
With b, it forms so that the whole rotary blade 1 may be covered. The operation cover 3b is formed slidably on the fixed cover 3a so that the exposed dimension D of the rotary blade 1 can be changed.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a cutting machine for repairing cracks, and more specifically to a cutting machine for repairing cracks that is used by connecting to a dust collector through a hose so that dust generated during cutting can be sucked by the dust collector. .

[0002]

[Prior art]

 Conventionally, as a cutting machine of this type, for example, there is one in which a rotary blade is covered with a cover, and a hose of a dust collector is connected to the inside of the cover so as to communicate therewith.

[0003]

[Problems to be solved by the device]

 By the way, conventionally, when repairing a crack generated on a concrete wall surface or the like, first, the crack is, for example, a disk-shaped rotary blade having a diamond fixed to the peripheral surface and has a width of about 10 mm and a depth of about 10 to 15 mm. It is cut into a U shape, and then this cutting groove is filled with repair material. In this case, if dust such as concrete or paint on the surface is scattered, the repaired surface around the crack is polluted by the dust, and the worker inhales this dust, which is harmful to health. Therefore, it is desirable that this type of cutting machine be formed so as to completely prevent dust generated during cutting from scattering outside the cover. However, in the conventional products, the cover is usually formed in a fan shape or the like in a side view, and is usually formed in a state of covering a part of the upper and side portions of the rotary blade. Therefore, if a conventional product is used, the dust generated during cutting will be insufficiently collected, and dust scattered from between the cover and the repair surface will contaminate the repair surface such as the wall surface, and also harm the health of the operator. There was a problem.

Further, in the case of the conventional product, since the cover is simply provided with the cover, it is unavoidable that the cutting machine body rolls sideways due to vibration or impact during cutting. Therefore, with conventional products, it was difficult to guide the rotary blade vertically and stably to the wall surface or floor surface that was the repair surface, so the groove width became uneven, and it was easy to cut out of cracks and ripened. Not only was it necessary to finish, but the finished state could not be cleaned up.

In this type of repair work, however, the state of cracks usually differs depending on the site, so the cutting depth needs to be changed appropriately depending on the site. However, in the case of conventional products, the depth of cutting is usually done by manually adjusting the pressing force of the cutting machine body.Therefore, according to the conventional products, not only was the operator physically heavy, There was a problem that the depth of the groove was likely to vary, which was inconvenient and inconvenient to use.

The present invention is intended to solve the problems of such conventional products. Therefore, the technical problem of this plan is that the scattering of dust generated during cutting can be completely prevented, cutting can be easily performed with a constant groove width and depth without requiring skill and labor, and the cutting depth can be changed easily. The purpose of the present invention is to provide a cutting machine for repairing cracks formed in this way that is easy to use.

[0007]

[Means for Solving the Problems]

 The present proposal adopts the following technical means in order to solve the above problems. That is, the present invention is directed to a crack repair cutting machine in which a rotary blade 1 for cutting a crack 2 is covered with a cover 3, and a hose 5 of a dust collector 4 is connected to the cover 3 so as to communicate with the inside of the cover 3. A posture holding body 9 is provided on the outer side surface of 3 to abut the repair surface 10 on the side of the crack 2 to prevent rolling during cutting, and the cover 3 is fixed to the cutting machine body 7. The cover 3a and the operation cover 3b which cooperates with the fixed cover 3a to collect dust and the lower edge 11 of which abuts on the repair surface 10 are formed so as to cover the entire rotary blade 1. The operating cover 3b is slidably formed on the fixed cover 3a so that the exposure dimension D of the rotary blade 1 can be changed.

In this case, it is preferable that the operation cover 3b is pivotally attached to the fixed cover 3a so as to be slidably rotatable so that the operation can be simplified.

Further, according to the present invention, the connecting portion 6 of the hose 5 is formed on the side surface of the cover 3 so that the hose 5 does not hinder the cutting work and the cutting machine body 7 can be inserted into a narrow space to work. good.

Further, in the cutting machine of the present invention, in order to accurately guide the rotary blade 1 along the crack 2, an indicator 17 for indicating the position of the rotary blade 1 is provided at the outer surface position of the fixed cover 3a above the rotary blade 1. Should be formed.

[0011]

[Action]

 In this plan, the operator moves the main body 7 of the cutting machine while the operation cover 3b is in contact with the repair surface 10. Since the entire rotary blade 1 is covered by the fixed cover 3a and the operating cover 3b, when the dust collector 4 operates, the suction force of the dust collector 4 causes a negative pressure in the cover 3. Therefore, in this plan, the cover 3 causes a flow that sucks the outside air into the cover 3 through a slight gap generated between the repair surface 10 and the crack 2, and as a result, dust such as concrete generated during cutting is scattered to the outside. Instead, they are collected by the dust collector 4 via the hose 5.

Further, in the present invention, when the cutting machine body 7 is moved, the posture holder 9 provided on the side surface of the cover 3 is prevented from tilting in the lateral direction, that is, in the direction orthogonal to the traveling direction. To do. When changing the cutting depth, the operation cover 3b is slid on the fixed cover 3a and the exposure dimension D of the rotary blade 1 is changed.

[0013]

【Example】

 Hereinafter, a preferred embodiment of the present invention will be described with reference to the accompanying drawings. Reference numeral 1 is a rotary blade that cuts the crack 2. The rotary blade 1 has diamond blades fixed at equal intervals at the circumferential position. Reference numeral 3 is a metal cover for covering the rotary blade 1, and reference numeral 4 is a dust collector for collecting dust generated during cutting.

The hose 5 of the dust collector 4 is connected to the cover 3 so as to communicate with the inside of the cover 3. Reference numeral 6 is a connecting portion of the hose 5. The connecting portion 6 is formed on the side surface of the cover 3 on the side where the cutting machine body 7 is arranged. The reference numeral 8 is a handle.

Reference numeral 9 is a posture holder that abuts on the repair surface 10 on the side of the crack 2 to prevent rolling during cutting. This posture holding body 9 is formed in a rod shape in this embodiment, is welded to the side surfaces of a fixed cover 3a and a movement cover 3b, which will be described later, and is arranged in a front and rear pair (FIGS. 3 and 7). , FIG. 9, etc.).

The cover 3 collects dust in cooperation with the fixed cover 3 a fixed to the cutting machine body 7 and the fixed cover 3 a, and the lower edge 11 contacts the repair surface 10. The movable cover 3b is formed so as to cover the entire rotary blade 1.

The fixed cover 3a and the operation cover 3b are pivotally attached to each other by inserting the pin 12 (see FIGS. 3 and 9) of the operation cover 3b into the through hole 13 (see FIG. 4) of the fixed cover 3a. Has been done. Reference numeral 14 (see FIG. 2, FIG. 4, FIG. 6 and the like) is a male screw formed in the fixed cover 3a, and 15 (see FIG. 1, FIG. 2, FIG. 8 etc.) is a notch groove formed in the operation cover 3b. The operation cover 3b is formed so as to be rotatable about the pin 12 with respect to the fixed cover 3a in a state where the notch groove 15 is engaged with the male screw 14. Reference numeral 16 (see FIGS. 1 and 2) is a butterfly screw screwed to the male screw 14 described above. The operation cover 3b is fixed to the fixed cover 3a by the thumbscrew 16.

Reference numeral 17 (see FIG. 1, FIG. 3, FIG. 6 and the like) is a display unit showing the position of the rotary blade 1. The display portion 17 is made of an adhesive tape in this embodiment, and is formed by attaching the adhesive tape to the outer surface position of the fixed cover 3a which is above the rotary blade 1.

Next, the operation of this embodiment will be described. First, the operator holds the handle 8 with the right hand, holds the cutting machine body 7 with the left hand, and applies the rotary blade 1 to the crack 2. In this case, the operation cover 3b and the posture holder 9 are in contact with the repair surface 10, and the rotary blade 1 is entirely covered by the fixed cover 3a and the operation cover 3b.

Next, in this state, the cutting machine body 7 is moved while being pressed against the repair surface 10. As a result, the crack 2 is cut to the same depth, and dust such as concrete generated during cutting is collected by the dust collector 4 via the hose 5 without scattering to the outside. When the cutter body 7 is moved, the posture holder 9 is prevented from tilting in the lateral direction, that is, in the direction orthogonal to the traveling direction.

When changing the cutting depth, the worker first loosens the butterfly screw 16, then slides and rotates the operation cover 3b to adjust the exposure dimension D of the rotary blade 1, and then the butterfly screw 16 The fastening operation cover 3b is fixed to the fixed cover 3a (see FIG. 10). Then, the operator cuts the crack 2 in this state by bringing the lower edge 11 of the operation cover 3b into contact with the repair surface 10 as in the above example.

Since the connecting portion 6 of the hose 5 is formed on the side surface of the cover 3 in the cutting machine according to the present embodiment, when cutting the crack 2 on the vertical surface 19 as shown in FIG. 11, for example, The hose 5 is arranged below the cutting machine body 7 and hangs down. When the repair surface 10 is a horizontal surface, the hose 5 is arranged on the side of the cutting machine body 7 as shown in FIG. Therefore, in this case, compared to the case where the connecting portion 6 is formed on the upper surface of the cover 3, for example, not only the hose 5 does not interfere with the work, but also the height H (see FIG. 11) of the cutting machine can be lowered, Therefore, the cutting machine body 7 can be inserted into a narrow space for work. In this case, by removing the handle 8, it is possible to insert and work in a narrower space.

In the above process, as shown in FIG. 12, in the present invention, the operation cover 3b may be formed so as to be slidable in the vertical direction with respect to the fixed cover 3a. In the case of this embodiment, the number of the cutout grooves 15 is arbitrary. For example, the cutout grooves 15 may be formed in a pair of left and right, and the operation cover 3b may be formed so as to be screwed to the fixed cover 3a at the left and right positions. In this embodiment, a pair of posture holding bodies 9 are formed at the front and rear positions on the side surface of the operation cover 3b, for example.

Further, as shown in FIG. 13, the posture holding body 9 may be formed, for example, in a round bar shape so as to reduce the frictional resistance with the repair surface 10. Further, in the case of the present invention, the posture holding body 9 is not limited to the case where the entire body is in contact with the repair surface 10. That is, as shown in FIG. 14, the posture holding body 9 may be formed so that a part thereof contacts the repair surface 10. In this case, the frictional resistance can be reduced because the contact portion with the repair surface 10 is reduced.

[0025]

[Effect of device]

 As described above, in the present proposal, the cover is formed so as to cover the entire rotary blade with the fixed cover and the operating cover, so that dust is not scattered outside the cover during cutting. Therefore, according to the present plan, it is possible to prevent the situation where the repaired surface is contaminated with dust, and it is possible to eliminate the dust from damaging the health of the worker. Further, in the present proposal, since the posture holding body is provided on the outer side surface of the cover, it is possible to prevent the cutting machine body from rolling laterally, and it is possible to cut cracks in a stable state. Therefore, according to this, cracks can be easily cut with a constant width and neatly repaired without requiring skill. Further, according to the present invention, the operation cover is slidably formed on the fixed cover so that the exposed dimension of the rotary blade can be changed. Therefore, if the present plan is used, since the cutting depth can be changed by a simple operation of adjusting the operation cover, this kind of work can be facilitated and simplified.

According to the second aspect of the invention, the operation cover is pivotally attached to the fixed cover and is slidably rotatable. Therefore, in this case, since the operation for adjusting the operation cover can be performed by tightening and loosening the screw at one place, this can simplify the work of adjusting the exposed dimension of the rotary blade.

When the hose connecting portion is formed on the side surface of the cover as described in claim 3, the hose hangs down when the repair surface is a vertical surface, and the cutting machine main body, that is, the arm when the hose is a horizontal surface. A hose is placed on the side of the. Therefore, in this case, not only the hose does not interfere with the work, but also the hose is not placed above the cutting machine body, so the height of the cutting machine can be reduced, and work in a narrow space can be performed accordingly. Will be possible.

Further, when a display portion for indicating the position of the rotary blade is formed on the outer surface position of the fixed cover above the rotary blade as described in claim 4, the rotary blade is used as a guide and a mark. Since it can be guided along the crack, it can be cut accurately.

[Brief description of drawings]

FIG. 1 is a perspective view of an essential part of a preferred embodiment of the cutting machine of the present invention in a use state.

FIG. 2 is a side view of a main part of the same cutting machine.

FIG. 3 is a plan view of a main part of the above cutting machine.

FIG. 4 is a front view of a fixed cover.

FIG. 5 is a rear view of the fixed cover.

FIG. 6 is a front view of a fixed cover.

FIG. 7 is a plan view of a fixed cover.

FIG. 8 is a front view of the operation cover.

FIG. 9 is a perspective view of an operation cover.

FIG. 10 is a side view of an essential part for explaining the operation of the same cutting machine.

FIG. 11 is a front view of relevant parts for explaining the operation of the same cutting machine.

FIG. 12 is a side view of essential parts showing another embodiment of the same cutting machine as above.

13A and 13B show another embodiment of the posture holder, in which A is a front view and B is a sectional view taken along the line BB of A.

14A and 14B show still another embodiment of the posture holding body, A is a front view and B is a sectional view taken along line BB of A. FIG.

[Explanation of symbols]

 1 rotary blade 2 crack 3 cover 3a fixed cover 3b operation cover 4 dust collector 5 hose 7 cutting machine body 9 posture holder 10 repair surface 11 lower edge D exposed dimension

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[Procedure amendment]

[Submission date] December 15, 1994

[Procedure Amendment 1]

[Document name to be corrected] Drawing

[Name of item to be corrected] Fig. 4

[Correction method] Change

[Correction content]

[Figure 4]

Claims (4)

[Scope of utility model registration request] 1. A cutting machine for repairing cracks, wherein a rotary blade for cutting cracks is covered with a cover, and a hose of a dust collector is connected to the cover so as to communicate with the inside of the cover. An attitude holding body is provided that abuts against the side repair surface to prevent rolling during cutting, and the cover is a fixed cover that is fixed to the cutting machine body, and cooperates with this fixed cover to capture dust. With the operating cover whose lower edge abuts against the repair surface, the rotating blade is formed so as to cover the entire rotary blade, and the operating cover is slidably formed on the fixed cover to expose the rotary blade. A cutting machine for repairing cracks that can be freely changed. 2. The cutting machine for repairing cracks according to claim 1, wherein the operation cover is pivotally attached to the fixed cover and is slidably rotatable. 3. The cutting machine for crack repair according to claim 1, wherein a hose connecting portion is formed on a side surface of the cover. 4. The cutting machine for crack repair according to claim 1, 2 or 3, wherein a display portion indicating the position of the rotary blade is formed at an outer surface position of the fixed cover above the rotary blade.