JP2023045378A - Slate polishing device - Google Patents

Abstract

To provide a slate polishing device capable of polishing a front layer of a wavy slate more accurately and also capable of suppressing scattering of dust generated in polishing.SOLUTION: A polishing device includes: a brush member 22 that vertically rotates around a predetermined axial line m10 with respect to a surface of a slate to polish a front layer of the slate; and a cover 60 provided so as to surround a periphery of the brush member 22. The brush member 22 is formed in a flat elliptical shape.SELECTED DRAWING: Figure 4

Description

The present invention relates to a slate polishing apparatus.

Conventionally, there are slates whose main materials are cement and asbestos. Since slate is much lighter and cheaper than clay tiles, it is often used as exterior materials and roofing materials. However, it has been pointed out that if a person stays in an environment where asbestos dust is generated for a long time and inhales a large amount of asbestos, the incidence of lung cancer may increase. Therefore, very strict regulations are imposed on demolition work and renovation work of buildings using slate. As a device capable of removing such slate, there is a slate removing device described in Patent Document 1 below.

The slate removing device described in Patent Document 1 includes a dust vacuum cleaner and a hood. A dust vacuum cleaner sucks, through a filter, dust that is generated when exterior materials of a building or slates fixed to the roof are removed. The hood is attached to the tip of a suction hose extending from the dust vacuum cleaner and is in contact with the surface of the slate.

Japanese Unexamined Patent Application Publication No. 2007-205110

By the way, when a building with a slate roof has deteriorated, it is desirable to replace the roof. It can be difficult. Specifically, when the roof of a factory building is replaced, there is a risk that products cannot be manufactured in that building for a long period of time while the roof is being replaced. In addition, a large amount of money is required to replace the roof. Due to these circumstances, there are many businesses that cannot afford to replace their aging roofs.

Therefore, the inventors are studying a method of extending the life of the roof by applying a predetermined reinforcing agent to the surface of the slate to reinforce the roof. When reinforcing the slate by such a method, in order to properly apply the reinforcing agent to the surface of the slate, it is necessary to remove the foreign matter accumulated on the surface of the slate by polishing the surface layer of the slate. There is In this respect, the slate removing device described in Patent Document 1 can suck dust generated when removing the slate fixed to the roof, but does not have the function of polishing the surface layer of the slate. Therefore, a new device capable of polishing the surface layer of the slate is desired. In addition, when the surface layer of the slate is actually polished, there is a possibility that the dust of the slate generated during the polishing will scatter around, so it is necessary to take measures to suppress it.

SUMMARY OF THE INVENTION The present invention has been made in view of such circumstances, and its object is to suppress the scattering of dust generated during polishing while enabling the surface layer of a wavy slate to be polished more accurately. To provide a slate polishing apparatus capable of

A slate polishing apparatus for solving the above problems is a polishing apparatus for polishing a surface layer of a slate, comprising: a brush member for polishing the surface layer of the slate by longitudinally rotating about a predetermined axis with respect to the surface of the slate; a cover provided to surround the brush member. The brush member is formed in a flat elliptical shape.

According to this configuration, since the brush member is formed in a flat elliptical shape, the outer peripheral portion of the brush member can be brought into contact with the wavy slate more accurately. Therefore, when the brush member is longitudinally rotated with respect to the surface of the slate, it is possible to polish the wavy surface layer of the slate more appropriately. Moreover, the cover provided so as to surround the brush member can suppress scattering of dust generated when the brush member polishes the surface layer of the slate.

In the above-described slate polishing apparatus, the cover has an opening at the bottom when the direction in which the axis extends is defined as the axial direction, and the direction orthogonal to the axial direction and in which the brush member moves forward and backward is defined as the front-rear direction. It is formed in the shape of a box and covers the brush member so that a lower portion of the brush member is exposed from the opening. is formed with a protruding portion protruding in the shape of a mountain, and the protruding portion of the front wall portion of the cover is arranged so as to face forward a portion of the lower portion of the brush member, and the rear wall of the cover It is preferable that the protruding portion of the portion is arranged so as to face the lower portion of the brush member rearward.

According to this configuration, the protrusions of the cover are arranged in the valleys of the wavy slate, so that the cover is arranged along the shape of the slate. Therefore, scattering of dust from the inside of the space surrounded by the cover and the slate to the outside can be suppressed more accurately.
It is preferable that the above slate polishing apparatus further includes an injection section for injecting a liquid onto the surface of the slate.

According to this configuration, since the surface layer of the slate can be impregnated with liquid, it is possible to more accurately suppress scattering of dust generated during polishing.
Preferably, the slate polishing apparatus described above further includes a recovery device for recovering waste water discharged outside from the space surrounded by the cover.

According to this configuration, even if the waste water containing dust is discharged from the inside of the space surrounded by the cover to the outside, the waste water can be reliably recovered.

According to the slate polishing apparatus of the present invention, it is possible to more accurately polish the surface layer of the wavy slate while suppressing scattering of dust generated during polishing.

BRIEF DESCRIPTION OF THE DRAWINGS The figure which shows typically schematic structure of the polishing apparatus of the slate of embodiment. The perspective view which shows the perspective structure of the slate of embodiment. (A) is a side view showing the side structure of the small wave slate. (B) is a side view showing the side structure of the big wave slate. The front view which shows the front structure of the grinder main body of embodiment. The perspective view which shows the perspective structure of the brush of embodiment. The side view which shows the side structure of the cover of embodiment. FIG. 4 is a rear view showing the rear structure of the cover of the embodiment; The figure which shows typically the operation example of the slate of embodiment.

An embodiment of a slate polishing apparatus will be described below with reference to the drawings. In order to facilitate understanding of the description, the same constituent elements in each drawing are denoted by the same reference numerals as much as possible, and overlapping descriptions are omitted.
As shown in FIG. 1, a slate polishing apparatus 10 of the present embodiment is an apparatus for polishing the surface layer of a slate 3 used as a roofing material for a building 2 . The slate 3 is made mainly of cement and asbestos, and has a wavy shape with alternating peaks 3a and valleys 3b in the directions indicated by arrows X1 and X2 as shown in FIG. is formed in The slate 3 includes a large wave slate in which the wave pitch P10 is set to a large value L11 as shown in FIG. There are set wavelet slates and the like. In addition, the slate 3 includes a medium wave slate in which the wave pitch P10 is set to an intermediate value between "L11" and "L12". The polishing apparatus 10 of the present embodiment is effective for polishing large wave slate, but can also be used for polishing small wave slate and medium wave slate.

In the following description, of the directions perpendicular to the surface of the slate 3, the vertically upward direction is referred to as "upward Z1", and the vertically downward direction is referred to as "downward Z2". Further, the direction indicated by arrow X1 is called "left direction X1", and the direction indicated by arrow X2 is called "right direction X2". Further, the upward direction Z1 and the downward direction Z2 are also collectively referred to as the “vertical direction Z”, and the leftward direction X1 and the rightward direction X2 are also collectively referred to as the “horizontal direction X”.

As shown in FIG. 1, the polishing machine 10 includes a polishing machine main body 11 and a collection device 12 .
The polishing machine main body 11 is a portion that actually polishes the surface layer of the slate 3 . After being installed on the upper surface of the slate 3, the grinder main body 11 is operated by an operator. The surface layer of the slate 3 is polished by the polishing machine main body 11 when the worker slides the polishing machine main body 11 on the upper surface of the slate 3 . FIG. 1 shows, as an example, a situation in which the operator pushes the grinder main body 11 toward the upward direction of the slate 3 , but the operator is directed toward the downward direction of the slate 3 . You may operate so that the grinder main body 11 may be pushed. The moving direction of the grinder main body 11 is the direction indicated by the arrows Y1 and Y2 shown in FIG. 2, that is, the direction perpendicular to the directions X1 and X2 in which the slate 3 is formed in a wavy shape. Hereinafter, the direction indicated by arrow Y1 will be referred to as "forward Y1", and the direction indicated by arrow Y2 will be referred to as "backward Y2". Also, the front Y1 and the rear Y2 are collectively referred to as the "front-rear direction Y".

As shown in FIG. 4, the grinder main body 11 includes a brush 20, a frame 30, a motor 50, and a cover 60. As shown in FIG.
The frame 30 has a right vertical frame 31 , a left vertical frame 32 and a horizontal frame 33 . The frame 30 is made of a metal material such as aluminum.

The right vertical frame 31 and the left vertical frame 32 are formed to extend in the up-down direction Z and are arranged in the left-right direction X with a predetermined gap therebetween. The left vertical frame 32 is formed longer than the right vertical frame 31 . The horizontal frame 33 is formed to extend in the left-right direction X. As shown in FIG. The upper end of the right vertical frame 31 is fastened and fixed to the right end of the horizontal frame 33 with bolts or the like. The left end of the horizontal frame 33 is fastened and fixed to the vicinity of the middle portion of the left vertical frame 32 with bolts or the like. With such a fastening structure, the right vertical frame 31, the left vertical frame 32, and the horizontal frame 33 are integrally connected.

A handle 70 is integrally connected to the vicinity of the intermediate portion of the horizontal frame 33 . The handle 70 is substantially T-shaped and has a shaft portion 71 extending in the vertical direction Z and a first grip portion 72 provided at the upper end portion of the shaft portion 71 . An upper end portion of the shaft portion 71 is connected to an intermediate portion of the first grip portion 72 . The first grip portion 72 is formed to extend in the left-right direction X. As shown in FIG. A second grip portion 73 is further formed in the middle of the shaft portion 71 . The second grip portion 73 is formed to extend from the shaft portion 71 in the right direction X2. The first gripping portion 72 and the second gripping portion 73 are portions that can be gripped by the operator with both hands.

A brush 20 is rotatably supported between the lower end of the right vertical frame 31 and the lower end of the left vertical frame 32 .
As shown in FIG. 5, the brush 20 has a rotating shaft 21 and a brush member 22. As shown in FIG. The rotating shaft 21 is formed of a cylindrical member extending in the left-right direction X. As shown in FIG. The brush member 22 is composed of a plurality of brush pieces 220 extending radially outward from the outer peripheral surface of the rotating shaft 21 . The brush pieces 220 are made of a resin material such as 6,4-nylon. In FIG. 5, only a portion of the brush pieces 220 is illustrated, and outer edges of the plurality of brush pieces 220, which are not shown, are indicated by two-dot chain lines. In drawings other than FIG. 5, the outer edges of the brush pieces 220, in other words, the outer peripheral portion of the brush member 22 are indicated by solid lines. The total length of the brush piece 220 becomes shorter from the central portion of the brush member 22 in the horizontal direction X toward both ends. As a result, the brush member 22 is formed in a flat elliptical shape as a whole, in other words, in the shape of a rugby ball.

As shown in FIG. 4 , a flange portion 211 and a right shaft portion 212 are formed at the right end portion of the rotating shaft 21 . The right shaft portion 212 is inserted into an insertion hole 310 provided in the lower end portion of the right vertical frame 31 . A bearing 311 is provided in the insertion hole 310 . A right shaft portion 212 of the rotating shaft 21 is rotatably supported by a bearing 311 . A flange portion 213 and a left shaft portion 214 are similarly formed on the left end portion of the rotary shaft 21 . The left shaft portion 214 is inserted into an insertion hole 320 provided in the lower end portion of the left vertical frame 32 . A bearing 321 is provided in the insertion hole 320 . A left shaft portion 214 of the rotating shaft 21 is rotatably supported by a bearing 321 . With such a structure, the rotary shaft 21 is rotatably supported about an axis m10 parallel to the horizontal direction X. As shown in FIG. As the rotating shaft 21 rotates about the axis m10, the brush 20 also rotates about the axis m10. In this embodiment, the left-right direction X corresponds to the axial direction in which the axis m10 extends.

The tip of the left shaft portion 214 of the rotating shaft 21 is provided so as to pass through the lower end portion of the left vertical frame 32 and protrude from the left side surface of the left vertical frame 32 . A left shaft portion 214 of the rotating shaft 21 is connected to the motor 50 via a belt 90 .
Specifically, the motor 50 is fixed to the upper end of the left vertical frame 32 . The motor 50 is connected via a cord 51 to a power source (not shown). The motor 50 is driven based on power supplied through a cord 51 from a power source. The tip of the output shaft 52 of the motor 50 is provided so as to pass through the upper end of the left vertical frame 32 and protrude from the left side surface of the left vertical frame 32 . A pulley 91 is provided at the tip of the output shaft 52 of the motor 50 . Similarly, a pulley 92 is also provided at the tip of the left shaft portion 214 of the rotating shaft 21 . A belt 90 is wound around the pulleys 91 and 92 so that the output shaft 52 of the motor 50 is connected to the left shaft portion 214 of the rotating shaft 21 via the belt 90 .

A cover 60 is provided to cover the brush member 22 . The cover 60 is shaped like a box having an opening 61 at the bottom. As shown in FIG. 6, when the cover 60 is viewed from the lateral direction, the cover 60 covers the brush member 22 so that the lower part 22a of the brush member 22 is exposed to the outside through the opening 61. As shown in FIG. Below, the lower portion 22a of the brush member 22 exposed from the opening 61 of the cover 60 is referred to as an "exposed portion 22a".

As shown in FIGS. 4 and 6, on the bottom of the front wall portion 62 arranged in the front Y1 of the cover 60, a projecting portion 620 is formed so as to face the exposed portion 22a of the brush member 22 in the front Y1. formed. Similarly, as shown in FIGS. 6 and 7, the bottom portion of the rear wall portion 63 arranged in the rear Y2 of the cover 60 also protrudes so as to face the exposed portion 22a of the brush member 22 in the rear Y2. A portion 630 is formed. Each projecting portion 620 , 630 is formed in a mountain shape according to the shape of the exposed portion 22 a of the brush member 22 .

As shown in FIG. 4, a water pipe 100 is provided on the front surface of the front wall portion 62 of the cover 60 . The water pipe 100 is formed to extend in the left-right direction X on the front surface of the front wall portion 62 of the cover 60 . A plurality of injection ports are formed in the bottom surface of the water pipe 100 at predetermined intervals in the left-right direction X. As shown in FIG. Water is supplied to the water tube 100 through a hose 101 . A cock valve 102 is provided in the middle of the hose 101 so that an operator can manually switch between supplying and stopping the supply of water to the water tube 100 . In this embodiment, the water pipe 100 corresponds to the injection part. Also, the water jetted from the water tube 100 corresponds to the liquid jetted onto the surface of the slate 3 .

As shown in FIG. 1 , the recovery device 12 includes a recovery section 121 and a recovery can 122 . The recovery part 121 is provided at the lower end of the slate 3 . The collection part 121 is a gutter or the like provided at the lower end of the roof, and is formed with a concave cross section. The recovery can 122 is connected to the recovery section 121 via a hose 123 . The recovery can 122 sucks the liquid flowing through the recovery section 121 through the hose 123 with a predetermined suction force, and stores the sucked liquid.

Next, an operation example of the polishing apparatus 10 of this embodiment will be described.
First, an operator places the grinder main body 11 on the surface of the slate 3 as shown in FIG. . After that, when the operator opens the cock valve 102, water is supplied to the water pipe 100 through the hose 101, and the water flows from the water pipe 100 to a predetermined range of the slate 3 positioned in front Y1 of the cover 60. be jetted. As a result, the surface layer of the slate 3 can be impregnated with water, so that dust generated when the surface layer of the slate 3 is polished by the brush member 22 can be suppressed from scattering in the air.

When the operator actually polishes the surface layer of the slate 3, the operator supplies power to the motor 50 by connecting the cord 51 shown in FIG. When the motor 50 is driven by this, the output torque of the motor 50 is transmitted to the rotating shaft 21 via the belt 90 . As a result, the brush 20 rotates integrally with the rotary shaft 21 in the direction indicated by the arrow C in FIG. At this time, since the lower end of the brush member 22 is in contact with the surface of the slate 3, the rotation of the brush member 22 scrapes off the surface layer present in the region from the surface of the slate 3 to a predetermined depth. The dust generated at this time contains not only the foreign matter adhering to the surface of the slate 3 but also a part of the surface layer of the slate 3, that is, asbestos. As shown in FIGS. 4 and 7, the projecting portion 620 of the front wall portion 62 of the cover 60 faces the front Y1 of the exposed portion 22a of the brush member 22, and the rear Y2 of the exposed portion 22a of the brush member 22 faces. , the projecting portion 630 of the rear wall portion 63 of the cover 60 faces. Therefore, scattering of dust from the inside of the cover 60 to the outside is suppressed.

Dust generated when the grinder main body 11 grinds the surface layer of the slate 3 is discharged from the space below the cover 60 to the outside of the cover 60 together with water jetted from the water pipe 100 . This waste water is collected in the recovery section 121 by flowing into the recovery section 121 through the valley portion 3b of the slate 3. As shown in FIG. Drainage collected in the collection unit 121 is collected by a collection can 122 through a hose 123 .

An operator can grind an arbitrary region of the slate 3 by sliding the grinder main body 11 in the front-rear direction Y with respect to the surface of the slate 3 while gripping the handle 70 . In this embodiment, the direction in which the brush member 22 moves forward is the front Y1, and the direction in which the brush member 22 moves backward is the rear Y2.

According to the polishing apparatus 10 of the present embodiment described above, it is possible to obtain the actions and effects shown in (1) to (4) below.
(1) The polishing apparatus 10 includes a cover 60 that surrounds the brush member 22 . A brush member 22 that contacts the surface of the slate 3 is formed in a flat elliptical shape. According to this configuration, the outer peripheral portion of the brush member 22 can be brought into contact with the wavy slate 3 more accurately. Therefore, when the brush member 22 is longitudinally rotated with respect to the surface of the slate 3, it is possible to polish the wave-like surface layer of the slate 3 more appropriately. Moreover, the cover 60 provided so as to surround the brush member 22 can suppress scattering of dust generated by the brush member 22 polishing the surface layer of the slate 3 .

(2) The cover 60 is formed in a box shape having an opening 61 at the bottom and covers the brush member 22 so that the lower part 22a of the brush member 22 is exposed from the opening 61 . Protrusions 620 and 630 protruding in a mountain shape are formed on the bottom of the front wall 62 and the bottom of the rear wall 63 of the cover 60, respectively. The projecting portion 620 of the front wall portion 62 of the cover 60 is arranged to face the lower portion 22a of the brush member 22 in the forward direction Y1. The projecting portion 630 of the rear wall portion 63 of the cover 60 is arranged to face the lower portion 22a of the brush member 22 in the rearward direction Y2. According to this configuration, the protrusions 620 and 630 of the cover 60 are arranged in the troughs 3 b of the wavy slate 3 , so that the cover 60 is arranged along the shape of the slate 3 . Therefore, scattering of dust from the inside of the space surrounded by the cover 60 and the slate 3 to the outside can be suppressed more accurately.

(3) The polishing apparatus 10 further includes a water pipe 100 for spraying water onto the surface of the slate 3 . According to this configuration, the surface layer of the slate 3 can be impregnated with water, so that scattering of dust generated during polishing can be suppressed more accurately.
(4) The polishing apparatus 10 further includes a collection device 12 that collects waste water discharged from the space surrounded by the cover 60 to the outside. According to this configuration, even if waste water containing dust is discharged from the space surrounded by the cover 60 to the outside, the waste water can be reliably recovered.

The above embodiment can also be implemented in the following forms.
- The polishing apparatus 10 of the above-described embodiment can be used not only for polishing the slate 3 used as the roof material of the building 2 but also for polishing the slate used as the exterior wall material of the building 2 .

- The present disclosure is not limited to the above specific examples. Appropriate design changes made by those skilled in the art to the above specific examples are also included in the scope of the present disclosure as long as they have the features of the present disclosure. Each element included in each specific example described above, and its arrangement, conditions, shape, etc., are not limited to those illustrated and can be changed as appropriate. As long as there is no technical contradiction, the combination of the elements included in the specific examples described above can be changed as appropriate.

3 Slate 10 Polishing device 12 Collecting device 22 Brush member 22a Exposed portion (lower part of brush member) 60 Cover 61 Opening 62 Front wall 63 Rear wall part, 100... water pipe (injection part), 620, 630... projecting part.

Claims (4)

A polishing device for polishing a surface layer of a slate,
a brush member for polishing the surface layer of the slate by longitudinally rotating about a predetermined axis with respect to the surface of the slate;
a cover provided to surround the brush member,
The slate polishing apparatus, wherein the brush member is formed in a flat elliptical shape. When the direction in which the axis extends is defined as the axial direction, and the direction orthogonal to the axial direction and the direction in which the brush member moves forward and backward is defined as the front-rear direction,
The cover is formed in the shape of a box having an opening at the bottom, and covers the brush member such that a lower part of the brush member is exposed from the opening,
A projecting portion protruding in a mountain shape is formed on the bottom portion of the front wall portion and the bottom portion of the rear wall portion of the cover arranged in the front-rear direction,
the protruding portion of the front wall portion of the cover is arranged to face forward a lower portion of the brush member;
2. The slate polishing apparatus according to claim 1, wherein the projecting portion of the rear wall portion of the cover is arranged so as to rearwardly face a lower portion of the brush member. The slate polishing apparatus according to claim 1 or 2, further comprising an injection section for injecting a liquid onto the surface of the slate. The slate polishing apparatus according to any one of claims 1 to 3, further comprising a recovery device for recovering waste water discharged outside from the space surrounded by the cover.

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