JP5921966B2 - Working floor - Google Patents

Description

  In the present invention, when an operator performs some work on the film body on the upper surface of the film body stretched on a stationary member such as a casing in the film structure, the film body is damaged by an external force from the operator. In order to prevent this, the present invention relates to a working floor plate that is laid at an arbitrary position on the upper surface of the film body and on which an operator can ride.

  Conventionally, there is a membrane structure described in Patent Document 1 below. According to the thing of this gazette, in the said structure, a film | membrane body is stretched as a roof on the upper part of the stationary-side member used as the housing.

  In the above case, the film bodies face each other in the vertical direction and have lower film bodies, and the space between the lower film bodies is a sealed space. A gas is injected into this sealed space, and the upper and lower membrane bodies are bulged outwardly and a tensile force is applied by the internal pressure of the gas. And by this tensile force, the upper and lower membranes each maintain a predetermined shape, and the membrane functions as a roof.

  In addition, as another film structure, the following has been proposed. That is, the film body stretched on the fixed side member is attached to the fixed side member in a state where each end edge portion thereof is pulled outward. Thereby, a tensile force is given to the film body, and the film body maintains a predetermined shape by the tensile force.

JP-A-8-86124

  By the way, in the work of stretching the film body on the fixed side member, the work of attaching the edge of the film body to the fixed side member, or attaching any part to the upper part of the fixed side member or the film body When doing so, it is often seen that the worker performs the above-described work while riding on the upper surface of the film body.

  In the above case, the film body is required to maintain sufficient flexibility and translucency, so that the thickness is suppressed to be thin. For this reason, the film body is not exposed to external force such as contact with falling objects or foreign matters. The body strength tends to be weak. In addition, as described above, when a tensile force is applied to the film body in order to maintain the shape of the film body, a large tensile stress tends to be generated in the film body.

  As a result, in an operation on the upper surface of the film body, when an operator gives some external force to the film body, the film body may be easily damaged by the external force. Therefore, the operator is required to always pay attention not to apply unnecessary external force to the film body in the work, but the work on the film body may be complicated accordingly.

  In particular, when the film body is formed of a film made only of a resin material that does not have a fiber woven fabric base material that serves as a core material, the strength of the film body tends to be further weakened. For this reason, the operator is required to be more careful not to apply unnecessary external force to the film body, and the work on the film body may be further complicated.

  The present invention has been made paying attention to the above-described circumstances, and an object of the present invention is to perform an operation on the film body on the upper surface of the film body stretched on the fixed member. In doing so, the film body is not easily damaged by an external force from an operator so that the work on the film body can be performed easily and smoothly.

The invention of claim 1 is a working laying plate 6 that is laid at an arbitrary position on the upper surface of the film body 4 stretched on the fixed side member 3 and on which an operator 5 working on the film body 4 can ride.
The outer edge portions are overlapped with each other in the upper and lower directions, and the lower film materials 25 and 25 and the plate material 28 inserted into the space 27 between the both film materials 25 and 25 are provided. It is a working floor board.

  In the invention of claim 2, the plate material 28 is composed of a plurality of plate members 30 arranged in parallel in the surface direction of the film material 25, and the both films positioned between the adjacent plate members 30, 30. 2. The working floor plate according to claim 1, wherein the intermediate portions 25 a and 25 a of the members 25 and 25 are bonded to each other B. 3.

  The invention of claim 3 is provided with a connector 33 for releasably connecting the floor plate 6 and another floor plate 6 ′ laid on the upper surface of the film body 4 so as to be adjacent to the floor plate 6. The working floor plate according to claim 1 or 2, characterized in that it is a feature.

  The invention of claim 4 further comprises a coupler 38 for releasably connecting a part of the floor plate 6 and the other part sandwiching the bent portion when the floor plate 6 is bent. It is a flooring sheet for work according to any one of 1 to 3.

  According to a fifth aspect of the present invention, there is provided a belt-shaped material 44 extending along the surface of the film material 25 of the floor plate 6 and coupled to the film material 25. It is a working floor board as described in one.

  The invention of claim 6 is that the film body 4 stretched on the fixed side member 3 is a film formed only of a resin material, and each part thickness in the surface direction is 0.5 mm or less, and the film It is laid in arbitrary positions on the upper surface of the body, The working floor board according to any one of claims 1 to 5.

  In the invention of claim 7, the film body 4 stretched on the fixed side member 3 has upper and lower film bodies 19 and 20 facing each other in the vertical direction. Due to the internal pressure of the gas injected into the sealed space 21 between the upper and lower film bodies 19 and 20, each of the upper and lower film bodies 19 and 20 bulges outward to maintain a predetermined shape. The working floor plate according to any one of claims 2 to 6, wherein the working floor plate is laid on the floor.

  In addition, in this section, the reference numerals and drawing numbers appended to the above terms are not intended to limit the technical scope of the present invention to the “Example” section and the contents of the drawings described later.

  The effects of the present invention are as follows.

The invention of claim 1 is a working floor plate that is laid at an arbitrary position on the upper surface of the film body stretched on the fixed side member and can be carried by an operator working on the film body,
In addition to being overlapped with each other, the outer edge portions are coupled to each other, and a lower film material and a plate material inserted into a space between the both film materials are provided.

  For this reason, when an operator performs some work on the upper surface of the film body using the laying plate, for example, when the film body is stretched on the fixed side member, first, at the desired position on the upper surface of the film body. Lay the above floorboard. Next, it is assumed that the operator sits on the top surface of the floor board in a posture of standing or standing, and the work is performed in this state.

  And if it carries out as mentioned above, in the operation | work on the upper surface of a film | membrane body, the film | membrane material which forms the outer surface of this laying board, and the said film | membrane body will bend together in the laying board laid on the upper surface of this film body. Thus, the surface of the film body is brought into closer surface contact with the upper surface. For this reason, even if an unnecessary external force including the weight of the operator and being concentrated on the film body is partially applied from the operator, the external force is applied to each part in the surface direction by the floor plate. And is applied to the film body as a small surface pressure. Therefore, the film body is prevented from being damaged by the unnecessary external force.

  Further, in the above work, even if an operator unintentionally and directly applies some unnecessary external force to the film body, this is prevented by the floor plate laid on the upper surface of the film body. Therefore, also in this respect, the film body is prevented from being damaged by the unnecessary external force.

  As a result, the operator does not need to pay much attention to avoid applying unnecessary external force to the film body during the work, and accordingly, the work on the film body can be performed easily and smoothly.

  The invention according to claim 2 is that the plate material is composed of a plurality of plate members arranged in parallel in the surface direction of the film material, and each middle portion of the both film materials located between the adjacent plate members. Are connected to each other.

  For this reason, even if each plate member of the plate material of the floor plate is difficult to bend or is small in bending, the floor plate can be easily bent by bending of each halfway portion of the both membrane materials. Can do.

  Therefore, when the upper surface of the film body is bent, the base plate laid on the upper surface of the film body is smoothly bent along the upper surface of the film body, Surface contact with larger area. For this reason, each part surface pressure given to the above-mentioned film body via the above-mentioned laying board by the external force from the above-mentioned operator is suppressed smaller. Therefore, damage to the film body due to the external force is more reliably prevented.

  Moreover, the floorboard can be made compact by its bending. Therefore, if the floorboard is made compact when stored or carried, the floorboard can be easily stored and carried.

  According to a third aspect of the present invention, there is provided a connector for releasably connecting the laying plate and another laying plate laid on the upper surface of the membrane body so as to be adjacent to the laying plate.

  For this reason, if the laying board and the other laying board are connected to each other on the upper surface of the film body by a connector, the laying area of each of the laying boards on the upper surface of the film body can be increased and easily extended in a desired direction. Therefore, it is possible to easily expand the work space on each floor plate so that an operator does not apply unnecessary external force to the film body, and it can be easily extended in a desired direction. The work on the film body can be performed more easily and smoothly.

  According to a fourth aspect of the present invention, there is provided a coupler for releasably coupling a part of the floor plate and the other part sandwiching the bent portion when the floor plate is bent.

  Therefore, if the floor plate is bent and a part of the floor plate and the other part are joined to each other by the coupler, the floor plate can be made compact, and the floor plate thus made compact can be left as it is. Can be maintained. Therefore, it is possible to more easily store and carry the floorboard.

  According to a fifth aspect of the present invention, there is provided a belt-like material that extends along the surface of the membrane material of the floor plate and is bonded to the membrane material.

  For this reason, since the film material of the laying plate is reinforced by the band-shaped material and the strength thereof is improved, in the work on the upper surface of the film body, an operator particularly works on the film body with a tool or the like. Unintentional application of a large external force is more strongly prevented by the floorboard. Therefore, damage to the film body due to the external force is more reliably prevented.

  In addition, if the said coupling tool and a coupling tool are integrally formed in the said strip | belt-shaped material, while using this strip | belt-shaped material, while being able to simplify the structure of the said coupling tool and a coupling | bonding tool, these coupling tools and a coupling tool. Is reinforced by the belt-like material, and the connection strength by the connection tool and the connection strength by the connection tool are improved.

  In the invention of claim 6, the film body stretched on the fixed-side member is a film formed only of a resin material, and the thickness of each part in the surface direction is 0.5 mm or less. By laying a laying board at an arbitrary position on the upper surface of the body, the following effects are produced.

  That is, since the above-mentioned film body is particularly thin, the strength of the film body against an external force such as contact of a fallen object or a foreign object tends to be weak. Therefore, work on the upper surface of the film body In this case, when the worker gives some external force to the film body, the film body may be damaged.

  However, if the laying plate is laid on the upper surface of the film body as described above, the film body has sufficient strength against external forces, such as contact with fallen objects and foreign matter, so that the film body is sufficiently bent. The film body and the floor plate are in surface contact with each other over a larger area. For this reason, each part surface pressure given to the above-mentioned film body via the above-mentioned laying board by the external force from the above-mentioned operator is suppressed smaller. Therefore, according to the above-mentioned laying board, in addition to preventing an external force such as contact of a fallen object or a foreign object from being directly applied to the above-mentioned film body, an external force from an operator who steps on the laying board with his / her foot is used as a concentrated load. Can be prevented and damage to the film body due to the external force can be prevented more reliably.

  According to a seventh aspect of the present invention, the film bodies stretched on the fixed side member have upper and lower film bodies facing each other in the vertical direction, and are injected into a sealed space between the upper and lower film bodies. Due to the internal pressure of the gas, the upper and lower membrane bodies bulge outwardly to maintain a predetermined shape, and the following effects are produced.

  That is, when the film body is stretched onto the fixed side member, when the gas is injected into the sealed space of the film body and the lower film body is bulged, the shape of the upper surface of the upper film body changes over time. Change.

  In the above case, the laying board laid on the upper surface of the upper film body is bent each time so as to follow the shape of the upper surface of the upper film body that changes every moment, and always faces the upper surface of the upper film body. Contact. For this reason, even when working while gas is being injected into the sealed space of the film body, the floor plate prevents the operator from applying unnecessary external force to the film body. Therefore, the film body is prevented from being damaged by the external force. In addition, the film body can be stretched easily and smoothly accordingly.

  In addition, in the case where the film bodies having the lower film bodies are arranged in parallel in the surface direction as described above, the bulge of the lower film bodies on each of the both film bodies causes the A recess opening upward tends to be formed on the upper surface.

  In the above case, the floor plate laid so as to straddle the upper surfaces of the two membrane bodies is bent along the recess, and always in surface contact with the upper surfaces of the recess. For this reason, also in this case, it is prevented by the above-mentioned laying board that an operator gives unnecessary external force to each above-mentioned film body. Therefore, the film body is prevented from being damaged by the external force. In addition, the film body can be stretched easily and smoothly accordingly.

FIG. 4 is an enlarged sectional view taken along line I-I in FIG. 3. It is the whole membrane structure side view. FIG. 3 is a partially enlarged view of FIG. 2 for explaining a working state. FIG. 4 is an enlarged sectional view taken along line IV-IV in FIG. 3. (A) (b) It is explanatory drawing of the state made into the compact by folding the floorboard.

  With respect to the working floor plate of the present invention, when the worker performs some work on the film body on the upper surface of the film body stretched on the fixed member, the film body can be easily applied by an external force from the operator. In order to realize the object of making the work on the film body easy and smooth without being damaged, the form for carrying out the present invention is as follows.

  In other words, the working floor plate is laid at an arbitrary position on the upper surface of the film body stretched on the fixed side member, and an operator who works on the film body can ride. This laying board is provided with a lower film material and a board material that is inserted into a space between the two film materials, and the outer edge portions are joined to each other in a stacked manner.

  In order to explain the present invention in more detail, an embodiment thereof will be described with reference to the accompanying drawings.

  1-4, the code | symbol 1 is a film | membrane structure, and this film | membrane structure 1 is stretched as a roof on the fixed side member 3 installed on the ground 2, and the upper part of this fixed side member 3, and is horizontal. And a plurality of film bodies 4 arranged side by side. In addition, a work laying plate 6 that allows an operator 5 working on the film body 4 to ride on the upper surface of the film body 4 is laid at an arbitrary position on the upper surface of the film body 4.

  The fixed-side member 3 has a frame 10 such as a wall installed on the ground 2 and an arc convex shape that is supported by the upper part of the case 10 and is convex upward as a whole. A metal frame 11, a metal locking tool 13 that is fastened to the frame 11 by a fastener 12 and locks the end edge of each film body 4 over the entire edge, and the film An end edge of the body 4 and the locking tool 13 are integrally covered from above, and a metal cover plate 15 fastened to the locking tool 13 by a fastener 14 is provided.

  Each film body 4 has upper and lower film bodies 19 and 20 facing each other in the vertical direction. In addition, a gas (air) is injected into the sealed space 21 between the lower film bodies 19 and 20, and the upper and lower film bodies 19 and 20 bulge outward toward the outside due to the internal pressure of the gas. The shape is supposed to be maintained. Specifically, the upper film body 19 has an arc convex shape that bulges upward, and the lower film body 20 has an arc convex shape that bulges downward.

  The film body 4 includes a transparent (including translucent) film formed only of a thermoplastic resin material such as polyethylene (PE), which is a polyolefin resin, and tetrafluoroethylene / ethylene copolymer (ETFE), which is a fluororesin. Has been. Moreover, each part thickness of the surface direction of this film is 0.5 mm or less, is 0.5- (0.1 mm), and has favorable flexibility.

  The definition of “resin material only” means that there is no core material such as a woven fabric substrate described below, and the definition of “resin material only” includes, for example, a photocatalyst for preventing contamination. It means that fine particles may be included to some extent.

  Further, the membrane body is coated on a base material that is a woven fabric formed of natural fibers such as kenaf fibers, synthetic fibers such as polyester fibers, or inorganic fibers such as glass fibers, and the outer surfaces of the base material. It is also possible to use a material provided with an outer surface material (coating material) made of a thermoplastic resin material such as polyvinyl chloride (PVC) or fluorine resin to be coated.

  The floor plate 6 has a rectangular shape (rectangular shape), and is overlapped with the outer edge portions thereof over the whole of the outer edge portions. In addition, the lower film materials 25 and 25, both the film materials 25, 25, extending along each outer surface of each of the outer edge portions, and is bonded A to these outer edge portions to form a band-like material 26 that reinforces the connection A of these outer edge portions, and forms a rectangular shape (rectangular shape). , 25, and a plate member 28 inserted into a flat space 27. In the illustrated example, the upper and lower film materials 25 are separated from each other. However, a single film material may be bent and stacked vertically.

  Further, although not shown, the underlayer material 25 of the floor plate 6 may be provided with a skirt-like extension membrane material. In this way, when the base plate 6 and the other base plate 6 'that are juxtaposed with each other are connected to each other on the upper surface of the membrane body 4, the gap between the base plates 6 and 6' is set as the extension membrane. It becomes possible to cover with the material.

  The film material 25 of the floor plate 6 includes a base material that is a woven fabric formed of natural fibers such as kenaf fibers, synthetic fibers such as polyester fibers, or inorganic fibers such as glass fibers, and outer surfaces on the front and back sides of the base material. And an outer surface material (coating material) made of a thermoplastic resin material such as polyvinyl chloride (PVC) and polyethylene (PE). In this case, a rubber sheet or the like may be coated on the uppermost surface of the film material 25 of the floor plate 6, thereby obtaining an anti-slip effect. However, instead of the outer surface material made of the thermoplastic resin material, a rubber material is used. The outer surface material may be used.

  The belt-like material 26 is made of the same material as the fabric of the membrane material 25 described above, but may be the same material as the membrane material 25.

  The plate member 28 is a rigid plate such as a wooden plywood, but may be another wooden or metal, or a rigid plate made of resin such as polycarbonate (PC). Note that a cushioning material such as cotton may be sandwiched between the rigid plate and the two film members 25, thereby preventing the two film members 25 from being damaged by the rigid plate. .

  The plate member 28 is composed of a plurality of (three) plate members 30 arranged side by side in the surface direction and the longitudinal direction of the film material 25, and is located between the adjacent plate members 30, 30. The middle portions 25a of the two film members 25, 25 are coupled to each other. The floor plate 6 can be bent at each halfway portion 25a of the two membrane members 25, 25, and the floor plate 6 can be folded by this bending. The plate member 28 may be constituted by plate members 30 divided into a grid pattern.

  The bonds A and B are formed by welding, stitching, or adhesion, but may be a combination of these.

  In the illustrated example, a plurality of (two) laying plates 6 and 6 ′ having the same shape and the same size are laid adjacent to each other on the upper surface of the film body 4, and one laying plate 6 and the other laying plate 6 ′. Are connected to each other in a releasable manner.

  The connector 33 is inserted through the flexible annular body 34 projecting from the outer edge of each film member 25 of the floor plates 6 and 6 'and the annular bodies 34 of the floor plates 6 and 6'. It has a flexible elongated body 35 that connects the two laying plates 6, 6 ′ via these annular bodies 34. Specifically, the annular body 34 is formed of a strip-like material similar to the fabric of the membrane material 25 described above, and the long body 35 is formed of a rope (string). The annular body 34 and the elongated body 35 may be formed of an elastic material such as rubber or a metal material, and the elongated body 35 may be formed of a belt. Further, the connector 33 may be formed of a hook-and-loop fastener.

  5 (a) and 5 (b), when the half plate 25 is folded into three by bending the halfway portions 25a of the two membrane members 25, 25 of the bottom plate 6, the bent portions of the halfway portions 25a are formed. A coupler 38 is provided for releasably coupling a part of the film material 25 of the floor plate 6 sandwiched between the other part and the other part.

  In Fig.5 (a), the said coupling tool 38 is provided between the mutual opposing surfaces of a part of film | membrane material 25 and the other part of this base plate 6 when the base plate 6 is folded, and couple | bonds these both opposing surfaces. The hook-and-loop fastener 39 is formed.

  In FIG. 5 (b), one end of the coupler 38 is coupled to a part of the outer surface of the membrane material 25 of the floor plate 6, the other end is a free end, and the other end is the floor plate. 6 and a hook-and-loop fastener 41 that joins the other end of the band 40 to the other part of the outer surface of the membrane material 25 of the floor plate 6. The bond C is formed by welding, sewing, or adhesion, but may be a combination of these.

  The coupler 38 may be formed by the annular body 34 and the elongated body 35 of the coupler 33, and the coupler 33 may be used as the coupler 38.

  Other belt-like members 44 extending in parallel with each other are provided along the outer surface of each of the midway portions 25a, which are midway portions in the surface direction of the respective film materials 25, 25. The other belt-like material 44 is further bonded B to the two intermediate portions 25a and 25a that are bonded B to each other as described above. The other band member 44 is formed integrally with the annular body 34 of the connector 33. The other belt-like material 44 is made of the same material as the belt-like material 26.

  The film body 4 may be the same material as the film material 25 of the floor plate 6. Further, the film material 25 may be formed of only the above-described woven fabric or the above-described resin material.

According to the above-described configuration, the working floor plate 6 is laid at an arbitrary position on the upper surface of the film body 4 stretched on the fixed-side member 3 and can be carried by an operator 5 working on the film body 4.
In addition to being overlapped with each other, the outer edges thereof are joined A, and lower film materials 25 and 25 and a plate material 28 inserted into a space 27 between these film materials 25 and 25 are provided.

  Therefore, in particular, as shown in FIGS. 1 and 3, when the film body 4 is stretched to the fixed side member 3, the operator 5 uses the floor plate 6 on the upper surface of the film body 4 to perform some sort of operation. When working, first, the floor plate 6 is laid at a desired position on the upper surface of the film body 4. Next, it is assumed that the operator 5 gets on the upper surface of the floor board 6 in a sitting or standing posture, and the work is performed in this state.

  And if it carries out as mentioned above, in the operation | work on the upper surface of the film | membrane body 4, the laying board 6 laid on the upper surface of this film | membrane body 4 will be the film | membrane material 25 which forms the outer surface of this laying board 6, and the said film | membrane body 4 When the upper film body 19 is bent together, the upper film body 19 of the film body 4 is brought into closer surface contact with the upper surface of the upper film body 19. For this reason, even if an unnecessary external force including the weight of the operator 5 and being concentrated on a part of the film body 4 from the operator 5 is applied, the external force is Dispersed in each part in the surface direction and given to the film body 4 as a small surface pressure. Therefore, the film body 4 is prevented from being damaged by the unnecessary external force.

  Further, in the above work, even if the operator 5 unintentionally and directly applies some unnecessary external force to the film body 4, this is prevented by the floor plate 6 laid on the upper surface of the film body 4. Therefore, also in this respect, the film body 4 is prevented from being damaged by the useless external force.

  As a result, the operator 5 does not need to pay much attention to avoid applying unnecessary external force to the film body 4 during the work, and accordingly, the work on the film body 4 can be performed easily and smoothly. it can.

  Further, as described above, the plate material 28 is composed of a plurality of plate members 30 arranged in parallel in the surface direction of the film material 25, and the both film materials 25 are located between the adjacent plate members 30, 30. 25, the intermediate portions 25a and 25a are coupled to each other.

  For this reason, even if each plate member 30 of the plate material 28 of the floor plate 6 is difficult to bend or has a small bend, the bends of the intermediate portions 25a and 25a of the both membrane materials 25 and 25 are provided. Thus, the floor plate 6 can be easily bent.

  Therefore, when the upper surface of the film body 4 is bent, the floor plate 6 laid on the upper surface of the film body 4 is smoothly bent along the upper surface of the film body 4, and the film body 4 The surface contact is made in a larger area with respect to the upper surface. For this reason, each part surface pressure given to the film body 4 via the floor plate 6 by the external force from the worker 5 is suppressed to be smaller. Therefore, damage to the film body 4 due to the external force is more reliably prevented.

  Further, the floor plate 6 can be made compact by its bending. Therefore, if the floor board 6 is made compact when stored or carried, the floor board 6 can be easily stored or carried.

  Further, as described above, the connecting plate 33 is provided for releasably connecting the floor plate 6 and another floor plate 6 ′ laid on the upper surface of the film body 4 so as to be adjacent to the floor plate 6.

  For this reason, if the laying plate 6 and the other laying plate 6 ′ are connected to each other on the upper surface of the film body 4 by the connecting tool 33, the laying area of the laying plates 6 and 6 ′ on the upper surface of the film body 4 can be increased. And can be easily extended in the desired direction. Therefore, it is possible to easily expand the work space on each of the floor boards 6 and 6 'for preventing the worker 5 from applying unnecessary external force to the film body 4, and easily in the desired direction. Therefore, the work on the film body 4 can be performed more easily and smoothly.

  Further, as described above, there is provided the coupler 38 that releasably couples a part of the floor board 6 and the other part sandwiching the bent portion when the floor board 6 is bent.

  Therefore, if the floor plate 6 is bent and a part of the floor plate 6 and another part are coupled to each other by the coupler 38, the floor plate 6 can be made compact, and the floor plate 6 thus made compact can be used. Can be maintained as it is. Therefore, it is possible to more easily store and carry the floor board 6.

  Further, as described above, the belt-like material 44 is provided that extends along the surface of the film material 25 of the floor plate 6 and is coupled to the film material 25.

  For this reason, since the film | membrane material 25 of the said flooring board 6 is reinforced with the said strip | belt-shaped material 44, and the intensity | strength improves, especially in the operation | work on the upper surface of the film body 4, it is the operator 5 with respect to this film body 4. Unintentionally applying a large external force such as through a tool is more strongly prevented by the floor plate 6. Therefore, damage to the film body 4 due to the external force is more reliably prevented.

  If the connector 33 and the coupler 38 are formed integrally with the strip member 44, the configuration of the coupler 33 and the coupler 38 can be simplified by using the strip member 44. The coupling tool 33 and the coupling tool 38 are reinforced by the band member 44, and the coupling strength by the coupling tool 33 and the coupling strength by the coupling tool 38 are improved.

  Further, as described above, the film body 4 stretched on the fixed side member 3 is a film formed only of a resin material, and each part thickness in the surface direction is 0.5 mm or less, By laying the laying plate 6 at an arbitrary position on the upper surface of the film body 4, the following effects are produced.

  That is, since the above-described film body 4 is particularly thin, the strength of the film body 4 against external forces such as contact of falling objects and foreign matters tends to be weakened. When the worker 5 gives some external force to the film body 4 in the work in the above, the film body 4 may be damaged.

  However, if the laying plate 6 is laid on the upper surface of the film body 4 as described above, the film body 4 is sufficiently bent with respect to external forces such as contact with fallen objects and foreign matters, so that the film body 4 is sufficiently bent. The film body 4 and the floor plate 6 are in surface contact with each other over a larger area. For this reason, each part surface pressure given to the film body 4 via the floor plate 6 by the external force from the worker 5 is suppressed to be smaller. Therefore, according to the floor plate 6, in addition to preventing an external force such as a contact of a fallen object or a foreign object from being directly applied to the film body 4, an external force from an operator who steps on the floor plate 6 with his / her foot as a concentrated load. The film body 4 can be prevented from being applied, and the film body 4 can be more reliably prevented from being damaged by the external force.

  Further, as described above, the film body 4 stretched on the fixed side member 3 has the lower film bodies 19 and 20 facing each other in the vertical direction, and between these upper film bodies 19 and 20. Due to the internal pressure of the gas injected into the sealed space 21, the upper and lower film bodies 19, 20 are swelled outward to maintain a predetermined shape, and the effect is obtained next.

  That is, when the film body 4 is stretched on the fixed side member 3, when gas is injected into the sealed space 21 of the film body 4 and the lower film bodies 19 and 20 are bulged, the upper film body 19 The shape of the upper surface of the film changes with time so as to change from the state indicated by the alternate long and short dash line in FIG. 1 to the state indicated by the solid line.

  In the above case, the floor plate 6 laid on the upper surface of the upper film body 19 is bent each time so as to follow the shape of the upper surface of the upper film body 19 which changes every moment. Always in surface contact. For this reason, it is prevented by the laying plate 6 that the operator 5 applies unnecessary external force to the film body 4 even during the operation during the gas injection into the sealed space 21 of the film body 4. Therefore, the film body 4 is prevented from being damaged by the external force. Moreover, the film body 4 can be stretched easily and smoothly accordingly.

  Further, as shown in FIG. 1, when the film bodies 4 having the lower film bodies 19 and 20 are arranged in parallel in the surface direction as described above, Due to the swelling of the lower membrane bodies 19 and 20, a recess 46 that tends to open upward tends to be formed on the upper surface between the both membrane bodies 4 and 4.

  In the above case, the floor plate 6 laid so as to straddle the upper surfaces of the both membrane bodies 4 and 4 is bent along the recess 46 and always makes surface contact with the upper surfaces of the recess 46. For this reason, also in this case, the floor plate 6 prevents the worker 5 from applying unnecessary external force to the film bodies 4. Therefore, the film body 4 is prevented from being damaged by the external force. Moreover, the film body 4 can be stretched easily and smoothly accordingly.

DESCRIPTION OF SYMBOLS 1 Membrane structure 2 Ground 3 Fixed side member 4 Film body 5 Worker 6,6 'Base plate 19 Upper film body 20 Lower film body 21 Sealed space 25 Film material 25a Middle part 26 Strip material 27 Space 28 Plate material 30 Plate member 33 Connection Tool 38 Coupling tool 44 Strip material 46 Recess A Coupling B Coupling C Coupling

Claims (7)

A work laying plate that is laid at an arbitrary position on the upper surface of the film body stretched on the fixed side member, and on which an operator working on the film body can ride,
A working laying board characterized by comprising a lower membrane material and a plate material inserted into a space between the two membrane materials, the outer edge portions being joined to each other in an overlapping manner.   The plate material is composed of a plurality of plate members arranged side by side in the surface direction of the film material, and the intermediate portions of the both film materials located between adjacent plate members are coupled to each other. The working floor plate according to claim 1.   The work according to claim 1 or 2, further comprising a connector for releasably connecting the floor plate and another floor plate laid on the upper surface of the film body so as to be adjacent to the floor plate. Floorboard.   4. The apparatus according to claim 1, further comprising: a coupler that releasably couples a portion of the floor plate and the other portion sandwiching the bent portion when the floor plate is bent. 5. The working floorboard as described.   The working floor plate according to any one of claims 1 to 4, further comprising a band-shaped material extending along a surface of the film material of the floor plate and coupled to the film material.   The film body stretched on the fixed side member is a film formed only of a resin material, and each part thickness in the surface direction is 0.5 mm or less, and is laid at an arbitrary position on the upper surface of the film body. The working floor plate according to any one of claims 1 to 5, wherein   The film bodies stretched on the fixed side member face each other in the vertical direction and have lower film bodies, and above these, the upper pressure is increased by the internal pressure of the gas injected into the sealed space between the lower film bodies. 7. The lower film body bulges outwardly to maintain a predetermined shape, and is laid at an arbitrary position on the upper surface of the upper film body. Work floor as described in.

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