JP3008924U - Work sheet - Google Patents

Abstract

(57) [Abstract] [Purpose] To provide a work sheet in which a dam is formed in the peripheral portion so as to prevent liquid from overflowing and over which a wheel can get over. [Structure] A peripheral edge portion of 30 cm of a waterproof sheet is folded back and sewn so that four corners can communicate with each other to form an elongated fluid-filled bag body 2.
Air is injected and inflated from the air injection hole 3 of the bag body 2 to prevent the liquid from flowing out of the work sheet 1 to the outside of the sheet.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a work sheet for preventing contamination of a work floor due to liquid overflow and scattering when handling liquid such as water and oil in a workplace.

[0002]

[Prior art]

 For example, when working with liquids, water, oil, paint, cement grout liquid, etc. on the bridge surface of bridges, roads, airports, etc., in order to prevent contamination of the pavement surface due to overflow and scattering of the liquid, Waterproofing sheets and polyethylene films are laid and work is performed on them. In such a case, if the overflow amount is large or the pavement surface has a slope, the liquid overflows from the edge of the sheet and contaminates the work floor, which requires extra labor and cost.

In order to prevent the overflow, as shown in FIG. 8, if the pillow 21 is placed on the lower surface of the peripheral portion of the work sheet 1 and raised from the work floor 22, the work vehicle, the material carrying vehicle, etc. There were some problems such as not being able to get in and out smoothly.

[0004]

[Problems to be solved by the device]

 The present invention is intended to provide a working sheet that can be suitably used in the above cases, and its specific problems are: (1) The liquid on the working sheet is the peripheral edge of the sheet. To prevent it from overflowing. (2) There is no obstacle for the work vehicle to get on the work seat. (3) The work sheet can be easily laid and removed. Is.

[0005]

[Means for Solving the Problems]

 The present invention is a working sheet, characterized in that a fluid-filled bag body that continuously expands like a pipe is provided at the periphery of the working sheet and / or at the boundary of the partition. It is preferable that the fluid-filled bag has a cross-sectional lengthwise and lateral dimension after expansion of about 50 to 150 mm. The fluid-filled bag may be integrated with the work sheet or may be a separate body. It is also convenient to provide a fluid injection device such as an attached blower.

The work sheet itself may have any shape. The plane figure may be, for example, a triangle, a quadrangle, a pentagon, a circle, an oval, an ellipse, or an irregular shape. Further, the material and the type of the sheet do not matter. For example, a vinyl sheet, a polyethylene sheet, a nylon sheet, a polypropylene sheet, a rubberized woven sheet, a waterproof processed sheet, a canvas or the like may be used.

[0007]

[Action]

 The working sheet of the present invention is provided with a fluid-filled bag body that continuously expands in a pipe shape at the periphery of the sheet and / or at the boundary of the necessary partition, and a fluid such as low-pressure air is provided in the bag body. Enclose and let it swell. This makes it possible to easily form a dam on the periphery of the sheet. This dam prevents the working fluid from overflowing out of the seat. When a work vehicle enters the seat, the dam can be crushed by the wheels to get over it. After overcoming the dam, it will return to its original expanded form.

After laying the sheet on the work floor, a fluid such as water or air is injected into the fluid-filled bag body to inflate it, and when the sheet is removed after the work is completed, the enclosed fluid is released and removed. If it is not harmful even if water is discharged, tap water may be poured into the bag using a hose. If you want to prevent the release of water, you can inject air with a compressor or blower.

FIG. 1 shows a plan view of the embodiment, and FIG. 2 shows a view taken along the line AA. As shown in this embodiment, the fluid-filled bag 2 is continuously formed at the boundary between the peripheral edge of the work sheet 1 and the necessary partition, and the fluid is injected into the bag 2 from the fluid injection port 3. Then, as shown in FIG. 2, the bag body 2 is inflated and used. In this way, the workplace is prevented from becoming dirty and water leaks. This fluid-filled bag body 2 is inflated by low-pressure air or the like, and is not ruptured or damaged even if a part of it is trampled. When injecting water, it is advisable to partially provide an air pocket. In addition, when the work floor has a height or a slope, when water is injected, the water expands the low-level part of the bag, which is convenient for preventing the overflow of liquid etc. on the work sheet.

FIG. 3 shows an example in which the plane figure of the work sheet is a quadrangle. The plane figure may be any shape such as the circle in FIG. 4, the triangle in FIG. 5, and the pentagon in FIG. If a facility that spills liquid is installed on this work sheet, the work area covered with the work sheet will not be polluted. There is no stain even during the painting work, and it is possible to prevent the paint from flowing out of the sheet even if the paint can is tilted.

The fluid-filled bag body may be provided at the boundary portion of an appropriate partition portion other than the peripheral portion of the sheet. This is effective when the work sheet is used in a small area, or when separate work is performed for each partition to prevent liquids from mixing. These bags may be independent by providing a fluid inlet and an outlet separately for each installation position. The fluid-filled bag body may be a separate body from the work sheet, for example, a separate flexible hose or the like. At this time, it may be combined with the work sheet or, in some cases, may be a completely separate body.

[0012]

【Example】

 When grouting an airport prestressed concrete (PC) pavement, a grout mixing blunt is installed on the PC pavement and the grout liquid is kneaded. At this time, it is necessary to prevent the grout liquid from spilling and sticking to the pavement surface. Therefore, the work sheet of the present invention was used.

A 10 cm × 10 m fiber-containing waterproof work sheet 1 shown in FIG. 3 having a peripheral edge portion of 30 cm was folded back and sewn so that four corners could communicate with each other to form an elongated fluid-filled bag body 2. The air injection hole 3 and the discharge hole 3 were attached to the bag body 2 at positions substantially diagonal to each other. As shown in FIG. 7, a blower 11 is attached to the air injection hole 3 of the bag body 2, and as shown in the flow direction 13 from the discharge port 12, air having a pressure sufficient to supply air and maintain the bulge is injected. did. The pressure of the sealing fluid was set to a low pressure of 1 kg / cm ² or less. If the bag body is insufficiently expanded, the bag body 2 can be formed by a relatively simple sewing method without requiring strict pressure resistance because air may be supplemented as appropriate.

There were no obstacles for the wheels of the work vehicle to pass over the bag. It is possible to easily fold the grout liquid scattered on the work sheet by preventing it from overflowing to the outside of the sheet and releasing the injected air when the sheet is removed after the work is completed. According to this embodiment, the outflow fluid having a depth of several cm can be held without overflowing. Further, in this embodiment, the bag body is formed on the peripheral portion of the sheet having a square planar shape, but this shape is arbitrary. It can be formed into a circular shape or any planar shape that matches the shape of the workplace.

Low-pressure air is most preferable as the fluid to be sealed in the bag body 2, but by injecting water in addition to air, there is also an effect of adding weight to the peripheral portion of the work sheet. For example, in a strong wind environment, it is possible to prevent the wind-up of the sheet due to the wind and the resulting scattering. In the examples, the prevention of overflow of the grout liquid on the pavement plate was described, but it is also effective in preventing the scattering of liquid during the work such as mixing of paint and heavy oil, the transfer of containers, and the contamination of the work floor due to the outflow. This work sheet can be used in a wide range of cases such as handling solids including powder, handling slurry, etc. as well as being usable.

[0016]

[Effect of device]

 According to the present invention, it is possible to prevent the floor surface of a workplace from being contaminated with a foreign liquid with a sheet having a simple structure. Therefore, it does not require extra labor and cost such as removal of pollution, and economic effects can be expected.

[Brief description of drawings]

FIG. 1 is a plan view of an embodiment of the present invention.

FIG. 2 is a view on arrow AA of FIG.

FIG. 3 is a plan view of the embodiment.

FIG. 4 is a plan view of the embodiment.

FIG. 5 is a plan view of the embodiment.

FIG. 6 is a plan view of the embodiment.

FIG. 7 is a partial side view of the embodiment.

FIG. 8 is an explanatory diagram of a conventional example.

[Explanation of symbols]

 1 Work Sheet 2 Fluid-filled Bag 3 Fluid Inlet 11 Blower 12 Discharge Port 13 Flow Direction 21 Pillow 22 Work Floor

Claims (7)

[Scope of utility model registration request] 1. A work sheet, characterized in that a fluid-filled bag body that continuously expands into a pipe shape is provided at the periphery of the work sheet and / or at the boundary of the partition. 2. The fluid-filled bag body is characterized in that the vertical and horizontal dimensions of its cross section after expansion are 50 to 150 mm.
Work sheet described. 3. The work sheet according to claim 1, wherein the fluid-filled bag is integral with the work sheet. 4. The work sheet according to claim 1, wherein the fluid-filled bag is separate from the work sheet. 5. The work sheet according to claim 1, further comprising an accessory fluid injection device. 6. The work sheet according to claim 1, wherein the planar figure is one selected from the group consisting of a triangle, a quadrangle, a pentagon, a circle, an oval, an ellipse, and an irregular shape. . 7. The work sheet is a vinyl sheet, a polyethylene sheet, a nylon sheet, a polypropylene sheet,
The work sheet according to claim 1, wherein the work sheet is one selected from the group consisting of a rubberized woven fabric sheet, a waterproof sheet, and a canvas.