Visual safety confirmation structure for wire saw device

Abstract

To provide a visual safety confirmation structure for a wire saw device capable of always and visually confirming safe rotational driving of the wire saw device while shielding scattering of polluted water and spreading of dust with a cover.SOLUTION: In a visual safety confirmation structure for a wire saw device, a protection cover 2 has a drive motor 11 driving rotation of a wire saw 14 of the wire saw device 10, and includes: a body cover 3 covering surroundings of a wire saw body 15 slidably moving on a rail 16; a fixed cover 4 covering surroundings of a driven pulley without movement located farthest from the wire saw body 15; and driven covers 5, 6 covering a space with the body cover 3 separated from the fixed cover 4 by slidably moving on the rail 16 in response to progress of cutting. The visual safety confirmation structure is configured to allow visual confirmation from the outside on whether or not the rotation of the wire saw device 10 is driven by covering each of the body cover 3, the fixed cover 4, and the driven cover 5 with a transparent plate.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a visual safety confirmation structure for a wire saw device. [Background technology]

[0002] Conventionally, wire sawing machines (wire sawing equipment) have been used to cut and remove concrete structures. In such cutting and removal work using wire sawing machines, the loop of the wire rope, which has diamond chips fixed to its surface, must be gradually shortened using pulleys or other devices as the cutting progresses. Furthermore, because the wire rope may become tangled while the wire sawing machine is in operation, or the diamond chips may fly off if the wire rope comes into contact with something other than the target concrete structure, it is necessary to periodically check that the pulleys and other devices are rotating and running without any problems while the wire sawing machine is in operation.

[0003] However, while there is a demand for visual confirmation of the rotational running state of the wire saw device, as mentioned above, there is a risk of diamond chips flying off and the spread of concrete dust generated during cutting, so there is also a demand for some means of covering equipment such as pulleys to ensure safety and prevent the spread of dust. Therefore, in current cutting work of concrete structures using wire saw devices, the wire saw device is covered with a sheet such as a mesh sheet to deal with the possibility of diamond chips flying off, and the sheet is periodically turned over to visually check whether the wire saw device is rotating and running safely.

[0004] For example, Patent Document 1 discloses a cover for a wire saw device that encloses the wire saw device, is equipped with a suction device and a cooling device, and has a visible window in the cover (see claims 1 and 2 of Patent Document 1, paragraphs

[0008] to

[0055] of the specification, and Figures 1 to 3 and 8 of the drawings, etc.).

[0005] However, the cover of the wire saw machine in Patent Document 1 has a problem in that although the area visible through the window can be visually confirmed, important parts such as the pulley of the machine, which gradually shrinks as the cutting work progresses, are not always visible. Also, the wire saw machine in Patent Document 1 supplies cooling water to cool the wire rope, but during periods of low dew point, such as winter, the cover window fogs up and becomes difficult to see.

[0006] On the other hand, Patent Document 2 discloses a guide roller cover for a wire saw that is provided with an observation window for observing the inside, and that solves the problem of machining fluid adhering to the observation window, making it impossible to see the inside, by providing a spray nozzle that sprays cleaning fluid to wash away the machining fluid that has adhered to the observation window (see claim 1 in the claims of Patent Document 2, paragraphs

[0009] to

[0017] in the specification, Figure 2 in the drawings, etc.).

[0007] Furthermore, Patent Document 3 discloses a wire saw device that includes a processing chamber for processing a workpiece, a cover that covers the processing chamber, and a transparent portion provided on at least a part of the cover, in which a cleaning unit is provided to prevent scratches on the transparent portion, which allows the inside of the processing chamber to be viewed, and a cleaning liquid that flows over the inner surface of the transparent portion washes away abrasive grains and chips before they adhere to the inner surface of the transparent portion (see claim 1 in the scope of claims of Patent Document 3, paragraphs

[0025] to

[0036] in the specification, and Figures 1, 3, 4, etc. in the drawings).

[0008] However, the guide roller cover for the wire saw described in Patent Document 2 and the wire saw device described in Patent Document 3 are wire saws for processing workpieces in factories where workers cannot enter the work area where brittle materials such as silicon, glass, and ceramics are cut, and are in a different technical field from wire saws used to cut concrete structures.In addition, they do not at all recognize the problem that the water vapor from the cooling water causes the cover window to fog up and make it impossible to see during times of low dew point temperatures such as the winter mentioned above. [Prior art documents] [Patent documents]

[0009] [Patent Document 1] Patent No. 7012043 [Patent Document 2] Japanese Patent Application Laid-Open No. 2000-167760 [Patent Document 3] Japanese Patent Application Publication No. 2017-196689 Summary of the Invention [Problem to be solved by the invention]

[0010] Therefore, the present invention was devised in consideration of the above-mentioned problems, and its purpose is to provide a visual safety confirmation structure for a wire saw device that allows visual confirmation at all times that the wire saw device is rotating safely while blocking the scattering of contaminated water and the spread of dust with a cover. [Means for solving the problem]

[0011] The visual safety confirmation structure for a wire saw device according to the first invention comprises a wire saw device and a protective cover installed around the wire saw device, and allows visual confirmation of whether the wire saw device is rotating safely while the protective cover shields the area around the wire saw device.The protective cover has a drive motor that rotates the wire saw of the wire saw device, and is equipped with a main body cover that covers the area around the wire saw body that slides on a rail, a fixed cover that covers the area around the driven pulley that is furthest from the wire saw body and does not move, and a follower cover that covers the area between the main body cover that slides on the rail and moves away from the fixed cover as cutting progresses, and the main body cover, the fixed cover, and the follower cover are each covered with a transparent plate, and are configured so that it is possible to visually confirm from the outside whether the wire saw device is rotating.

[0012] The visual safety confirmation structure for a wire saw device according to the second invention is characterized in that, in the first invention, the main body cover, the fixed cover, and the following cover of the protective cover are each provided with a sprinkler, and are configured to be able to spray water to prevent the inside of the transparent plate from fogging up.

[0013] The visual safety confirmation structure for a wire saw device according to the third invention is characterized in that, in the first invention, the following cover has a plurality of casters and is configured to be able to roll on the concrete structure to be cut using the casters.

[0014] A fourth aspect of the present invention provides a visual safety confirmation structure for a wire saw device according to the third aspect of the present invention, characterized in that the following covers are provided in plurality and are configured to be connectable to one another.

[0015] A fifth aspect of the present invention provides a visual safety confirmation structure for a wire saw device according to the first or second aspect of the present invention, characterized in that the main body cover is fitted with casters for transport. [Effects of the Invention]

[0016] According to the first to fifth inventions, the protective cover prevents the scattering of contaminated water, the spread of dust, and the breakage and scattering of diamond chips (diamond beads), thereby preventing personal injuries to workers such as cuts, and by making the protective cover transparent, it is possible to visually confirm at all times from outside the protective cover whether the wire saw device inside is rotating safely.

[0017] In particular, according to the second invention, the protective covers are each equipped with a sprinkler, so that by spraying water with the sprinkler, contaminated water mixed with concrete powder can be washed away, and the problem of the transparent plate of the protective cover becoming cloudy and making it difficult to see, even in winter when the dew point temperature is low, can be solved. In addition, the sprayed water constantly moistens the inside of the protective cover, reducing friction and kinking of the wire saw wire, thereby improving the wear rate of the wire saw and improving its durability.

[0018] In particular, according to the third and fourth inventions, the area around the wire saw between the main cover and the fixed cover, which move apart as the wire saw cuts, can be reliably shielded by a trailing cover, making it possible to safely cut concrete structures.

[0019] In particular, according to the fifth aspect of the present invention, casters for transportation are attached to the main body cover, so that it is easy to transport the machine over roads or the like to the site where cutting work is to be carried out. [Brief explanation of the drawings]

[0020] [Figure 1] FIG. 1(a) is a side view showing the wire saw device and the visual safety confirmation structure at the start of cutting, and FIG. 1(b) is a plan view showing the wire saw device and the visual safety confirmation structure at the start of cutting. [Figure 2] FIG. 2(a) is a side view showing the wire saw device and the visual safety confirmation structure when operation is suspended, and FIG. 2(b) is a plan view showing the wire saw device and the visual safety confirmation structure when operation is suspended. [Figure 3] FIG. 3(a) is a side view showing the wire saw device and the visual safety confirmation structure when the cover is added, and FIG. 3(b) is a plan view showing the wire saw device and the visual safety confirmation structure when the cover is added. [Figure 4] FIG. 4(a) is a side view showing the wire saw device and the visual safety confirmation structure when cutting is complete, and FIG. 4(b) is a plan view showing the wire saw device and the visual safety confirmation structure when cutting is complete. DETAILED DESCRIPTION OF THE INVENTION

[0021] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a visual safety confirmation structure for a wire saw device according to the present invention will be described in detail below with reference to the drawings.

[0022] [Visual safety confirmation structure for wire saw equipment] A visual safety confirmation structure 1 for a wire saw device according to an embodiment of the present invention will be described using Fig. 1. Fig. 1(a) is a side view showing the wire saw device 10 and the visual safety confirmation structure 1 at the start of cutting, and Fig. 1(b) is a plan view showing the wire saw device 10 and the visual safety confirmation structure 1 at the start of cutting.

[0023] As shown in Figure 1(a), the visual safety confirmation structure 1 for a wire saw device (hereinafter simply referred to as the visual safety confirmation structure 1) is composed of a wire saw device 10 and a protective cover 2 consisting of multiple covers installed around it.The protective cover 2 blocks the scattering of contaminated water and the spread of dust, and by making the protective cover 2 transparent, it is possible to visually confirm at all times from outside the protective cover 2 whether the wire saw device 10 inside is rotating safely.

[0024] <Wire saw device> First, a brief description will be given of the wire saw device 10. The wire saw device 10 is composed of a drive motor 11 that rotates and drives a wire saw 14 (described later), a drive pulley 12 that is rotated and driven by the drive motor 11, a plurality of driven pulleys 13a to 13g that are driven by the drive pulley 12, and the wire saw 14 suspended between the drive pulley 12 and the driven pulley 13.

[0025] The drive motor 11, the drive pulley 12, and the two driven pulleys 13a and 13b constitute a wire saw body 15, which is configured to be slidable along a rail 16.

[0026] The wire saw 14 is inserted into holes h1 and h2 drilled in a concrete structure C1, such as a concrete girder, to be cut, and three driven pulleys 13c to 13e are provided above the hole h1, and two driven pulleys 13f and 13g are provided above the hole h2.

[0027] In other words, as the cutting of the concrete structure C1 progresses using the wire saw 14 between holes h1 and h2, the wire saw body 15 slides in the direction of the arrow along the rail 16, thereby maintaining a certain degree of tension on the wire saw 14.

[0028] <Protective cover> The protective cover 2 is composed of a main body cover 3 that covers the wire saw main body 15, a fixed cover 4 that covers the two immovable driven pulleys 13f, 13g that are located above the hole h2 that is farthest from the wire saw main body 15, and a plurality of follower covers 5, 6 that cover the wire saw 14 and driven pulleys 13c to 13e between the main body cover 3 and the fixed cover 4, which move away from the fixed cover 4 as cutting progresses.

[0029] (Main unit cover) The main body cover 3 is a cover that covers the drive pulley 12 and two driven pulleys 13a, 13b of the wire saw main body 15, excluding the drive motor 11 and rail 16, and is equipped with a flat metal frame body 30 on the left and right of the direction of travel indicated by the arrow, and a transparent plate 31 made of resin glass, quartz glass, or the like attached to the frame body 30 with screws or the like.

[0030] Furthermore, in order to solve the problem of the cover window becoming fogged up and obscuring visibility during periods of low dew point temperature such as winter, as mentioned in the background art, the main body cover 3 is provided with a sprinkler 32 on the ceiling surface near the center of the frame 30, which is connected to a water supply means such as a waterworks facility and sprays water onto the inner surface of the transparent plate 31.

[0031] Furthermore, casters 33 are attached to the main body cover 3 for transporting the machine to the site where cutting work is to be performed, etc. In the illustrated embodiment, only one caster 33 is shown, but it goes without saying that multiple casters may be attached.

[0032] (Fixed cover) The fixed cover 4 is a cover that covers the two driven pulleys 13f, 13g that are fixed to the concrete structure C1 above the hole h2 and do not move, and includes a metal box-shaped frame 40 and a transparent plate 41 similar to the transparent plate 31 described above that is attached to the frame 40 with screws or the like. However, the transparent plate 31 is not attached to the end face of the frame 40 on the main body cover 3 side so that a follower cover 5, which will be described later, can be inserted therethrough.

[0033] In addition, the fixed cover 4 is provided with a sprinkler 42 on the ceiling surface near the center of the frame body 40, similar to the sprinkler 32 mentioned above, which is connected to a water supply means such as a water facility and sprays water onto the inner surface of the transparent plate 41.

[0034] An opening is provided below the transparent plate 41 on the side of the fixed cover 4, and a mesh sheet 43 is attached to this opening, allowing ventilation from the outside to the inside of the fixed cover 4. Therefore, even when water is supplied to cool the wire saw 14, the problem of moisture building up inside the fixed cover 4 and making it impossible to see the wire saw device 10 inside through the transparent plate 41 can be resolved to a certain extent, even without operating the sprinkler 42.

[0035] (Following cover) The follower cover 5 (6) includes a metal box-shaped frame 50 (60) and a transparent plate 51 (61) similar to the above-mentioned transparent plate 31 attached to the frame 50 (60) with screws or the like. However, the transparent plate 51 (61) is not attached to the main body cover 3 side of the frame 50 (60) and to both end faces of the fixed cover 4 in order to allow the main body cover 3 and the follower cover 5 to pass through.

[0036] In addition, similar to the sprinklers 32, 42 described above, the following cover 5 (6) is provided with a sprinkler 52 (62) on the ceiling surface near the center of the frame body 50 (60) that is connected to a water supply means such as a water facility and sprays water onto the inner surface of the transparent plate 51 (61).

[0037] An opening is provided in the lower part of the transparent plate 51 (61) on the side of the follower cover 5 (6), and a mesh sheet 53 is attached to this opening, allowing ventilation from the outside to the inside of the follower cover 5 (6). Therefore, even when water is supplied to cool the wire saw 14, the problem of moisture building up inside the follower cover 5 (6) and making it impossible to see the wire saw device 10 inside through the transparent plate 51 (61) can be resolved to a certain extent, even without operating the sprinkler 52 (62).

[0038] Furthermore, the follower cover 5 (6) is also provided with four casters 54 (64) for moving along the top surface of the concrete structure C1. Of course, the number of casters 54 (64) is not limited to four, and it goes without saying that more casters may be provided.

[0039] Next, the visual safety confirmation structure 1 will be further explained in accordance with the progress of the cutting work using Figures 2 and 3. Figure 2(a) is a side view showing the wire saw device 10 and the visual safety confirmation structure 1 when cutting is interrupted because the main body cover 3 has moved and cannot be covered by the following cover 5, and Figure 2(b) is a plan view showing the wire saw device 10 and the visual safety confirmation structure 1 when cutting is interrupted. Also, Figure 3(a) is a side view showing the wire saw device 10 and the visual safety confirmation structure 1 when a cover has been added by connecting the following cover 6 to the following cover 5, and Figure 3(b) is a plan view showing the wire saw device 10 and the visual safety confirmation structure 1 when a cover has been added.

[0040] As shown in Figure 2, as the wire saw device 10 continues to cut the concrete structure C1 between holes h1 and h2, the wire saw body 15 slides along the rail 16, and the space between the body cover 3 and the fixed cover 4 cannot be covered by the follower cover 5. As a result, it becomes impossible to prevent the wire saw 14 from cutting or diamond chips from scattering from the wire saw 14 by using the protective cover 2. Therefore, when the wire saw body 15 moves to the state shown in Figure 2, the drive motor 11 of the wire saw device 10 is stopped, and cutting of the concrete structure C1 by the wire saw device 10 is interrupted.

[0041] 3, a follower cover 6 having substantially the same configuration as the follower cover 5 described above is added, and the follower cover 5 and the follower cover 6 are connected together. At this time, since connecting hooks 55 are attached to the transparent plates 51, 61 on the ceiling surface between the follower cover 5 and the follower cover 6, the follower cover 5 and the follower cover 6 can be connected together easily and in a short time.

[0042] 3, removable handles 56, 66 are attached near the center of the end faces of the frame bodies 50 and 60 at the connecting portions between the follower covers 5 and 6. Therefore, when transporting the follower covers 5 and 6 over a road or the like to the site where cutting work will be performed, it is easy to move them by grasping the handles 56, 66 and rolling them on the top surface of the concrete structure C1 with the casters 54, 64.

[0043] Then, as shown in Fig. 4, the wire saw device 10 completes cutting of the concrete structure C1 between the holes h1 and h2, and the sliding movement of the wire saw body 15 on the rails 16 stops. Fig. 4(a) is a side view showing the wire saw device 10 and the visual safety confirmation structure 1 when cutting is complete, and Fig. 4(b) is a plan view showing the wire saw device 10 and the visual safety confirmation structure 1 when cutting is complete.

[0044] According to the visual safety confirmation structure 1 of this embodiment described above, the protective cover 2 shields the periphery of the wire saw device 10, and the protective cover 2 blocks the scattering of contaminated water, the spread of dust, and the breakage and scattering of diamond chips (diamond beads), thereby preventing personal injury to workers, such as cuts.

[0045] In addition, according to the visual safety confirmation structure 1, by covering the protective cover 2 that shields the periphery of the wire saw device 10 with a transparent plate, it is possible to visually confirm at all times from outside the protective cover 2 whether the wire saw device 10 inside is rotating safely.

[0046] Furthermore, according to the visual safety confirmation structure 1, the protective cover 2 is provided with sprinklers 32, 42, 52, and 62, so that by spraying water with the sprinklers 32, 42, 52, and 62, contaminated water mixed with concrete powder can be washed away by the sprinklers, and the problem of the transparent plate of the protective cover 2 becoming cloudy and making it impossible to see during periods of low dew point temperatures, such as winter, can be solved. Furthermore, according to the visual safety confirmation structure 1, the inside of the protective cover 2 is constantly moistened by the water sprayed from the sprinklers 32, 42, 52, and 62, which reduces friction and kinking of the wire of the wire saw 14, thereby improving the wear rate of the wire saw 14 and improving the durability of the wire saw 14.

[0047] Furthermore, according to the visual safety confirmation structure 1, the area around the wire saw 14 between the main cover 3 and the fixed cover 4, which move apart as the cutting by the wire saw device 10 progresses, is reliably shielded by the trailing covers 5 and 6, allowing the concrete structure C1 to be cut safely.

[0048] Furthermore, according to the visual safety confirmation structure 1, casters 33 for transportation are attached to the main body cover 3, so that the main body cover 3 can be easily transported along the road using the casters 33 for transportation to the site where cutting work is to be performed.

[0049] The visual safety confirmation structure 1 according to the embodiment of the present invention has been described in detail above. However, the above-described and illustrated embodiments are merely specific embodiments for carrying out the present invention. Therefore, the technical scope of the present invention should not be interpreted as being limited by these embodiments. [Explanation of symbols]

[0050] 1: Visual safety confirmation structure 2: Protective cover 3: Main end cover (protective cover) 30:Frame body 31: Transparent plate 32: Sprinkler 33: Caster 4: Fixed cover (protective cover) 40:Frame body 41:Transparent plate 42: Sprinkler 43: Mesh sheet 5,6: Follow-up cover (protective cover) 50,60:Frame body 51,61:Transparent plate 52,62:Sprinkler 53: Mesh sheet 54: Caster 55: Connecting hook 56: Handle 10: Wire saw device 11: Drive motor 12: Drive pulley 13a~13g: Driven pulley 14: Wire saw 15: Wire saw body 16: Rail C1: Concrete structure h1,h2:hole

Claims

1. A visual safety confirmation structure for a wire saw device, comprising a wire saw device and a protective cover installed around the wire saw device, and capable of visually confirming whether the wire saw device is rotating safely while shielding the periphery of the wire saw device with the protective cover, The protective cover has a drive motor that rotates and drives the wire saw of the wire saw device, and includes a main body cover that covers the periphery of the wire saw main body that slides on a rail, a fixed cover that covers the periphery of the driven pulley that does not move and is the furthest from the wire saw main body, and a follower cover that covers the area between the main body cover that slides on the rail and moves away from the fixed cover as cutting progresses, The main body cover, the fixed cover, and the follower cover are each covered with a transparent plate, and are configured so that it is possible to visually check from the outside whether the wire saw device is rotating or not. A visual safety confirmation structure for a wire saw device, characterized by:

2. The main cover, the fixed cover, and the follower cover of the protective cover are each provided with a sprinkler, and are configured to be able to spray water so that the inside of the transparent plate does not become cloudy.

2. The visual safety confirmation structure for a wire saw device according to claim 1,

3. The follower cover has a plurality of casters and is configured to be able to roll on the concrete structure to be cut using the casters.

2. The visual safety confirmation structure for a wire saw device according to claim 1,

4. The following covers are provided in plural and are configured to be connectable to each other.

4. The visual safety confirmation structure for a wire saw device according to claim 3, wherein:

5. The main body cover is equipped with casters for transportation.

3. The visual safety confirmation structure for a wire saw device according to claim 1 or 2, wherein:

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