JP2021059893A - Suspended scaffold - Google Patents

Abstract

To prevent water from leaking downward in a suspended scaffold constructed below a structure.SOLUTION: A suspension scaffold 1 includes: a floor member 2; a suspension member 3; a water-impermeable sheet 4 laid on the upper surface of the floor member 2 to form a penetration portion 5; and waterproof means 6 for blocking a flow of water in the penetration portion 5. The waterproof means 6 has: a tubular member 20 which is water-tightly attached to the upper surface of the water-impermeable sheet 4 and extends upward around the penetration portion 5; and a shaft member 10 at least a part of which is arranged inside the cylinder member 20 having a function to prevent water from flowing inside, provided in the middle of the suspension member 3; and a binding member 30 which stops water between the inner surface of the tubular member 20 and the outer surface of the shaft member 10. Since the tubular member 20 surrounds water-tightly the penetration portion 5 and the binding member 30 stops the water between the tubular member 20 and the shaft member 10, it is possible to prevent cleansing wastewater from leaking from the penetration portion 5. Since the tubular member 20 and the shaft member 10 are configured to stop water, the water can be reliably stopped with a simple operation regardless of shape of the suspension member 3.SELECTED DRAWING: Figure 3

Description

The present invention relates to a suspended scaffold constructed below a structure such as a bridge or an elevated road, and more particularly to a suspended scaffold having a function of preventing water from leaking downward.

When repairing, painting, cleaning, etc., on the lower surface of a structure that is high above the ground or water, such as a bridge or elevated road, a suspended scaffold constructed by suspending from the structure is used. As shown in Patent Document 1, the conventional suspension scaffold is a suspension member whose upper end is attached to a structure, and generally has a structure in which a floor member serving as a scaffold for an operator is held in a suspended state.

Japanese Unexamined Patent Publication No. 7-197645

When cleaning and removing deteriorated paint film and concrete on the underside of a structure from a suspended scaffold, the area below the suspended scaffold is a facility such as a park or parking lot, or nature such as a river or lake. When it is an area that requires environmental conservation, it is necessary to take measures to prevent the washing wastewater from falling below the suspended scaffolding. As one of such measures, the entire upper surface of the floor member of the suspended scaffold is covered with a waterproof impermeable sheet.

By the way, since the impermeable sheet is formed with a penetrating portion through which the hanging member for suspending the floor member is penetrated, this penetrating portion must be closed in order to prevent water leakage. Specifically, a waterproof additional pasting sheet is attached around the penetrating portion to close the opening portion, and the additional pasting sheet is also wrapped around the portion of the hanging member extending above the penetrating portion to block water. Water is stopped by joining to the sheet. However, since a member having complicated irregularities such as a chain is used as the hanging member, it is difficult to completely close the gap between the hanging member and the additional sticking sheet wound around the hanging member. As a result, there is a problem that the cleaning wastewater reaches the penetrating portion through the gap between the hanging member and the additional pasting sheet and falls downward from the floor member. Moreover, the work of winding the extra-pasted sheet around the hanging member is troublesome and requires skill, so that there is a problem that the construction efficiency is poor.

Therefore, it is conceivable to wrap the additional pasting sheet around the hanging member and then fill the gap between the two with a synthetic resin such as urethane resin to prevent the cleaning wastewater from reaching the penetrating portion through the hanging member. However, in this case, when the hanging member is reused, it is necessary to remove the synthetic resin adhering to the hanging member, which causes a problem that it takes time and effort to clean the hanging member after the construction is completed.

Therefore, an object of the present invention is to provide a means capable of reliably preventing downward water leakage in a suspended scaffold with a simple operation and reusing the suspended member.

In order to achieve the above object, the invention according to claim 1 is a suspension scaffold constructed below a structure, and provides a floor member, a suspension member that holds the floor member in a suspended state, and waterproofness. The waterproofing means includes a water-impervious sheet laid on the upper surface of the floor member and formed with a penetrating portion for penetrating the suspension member, and a waterproofing means for blocking the flow of water in the penetrating portion. It has a tubular member that is attached to the object and surrounds the penetrating portion, surrounds the circumference of the suspending member, and extends upward, and a closing means that watertightly closes between the tubular member and the suspending member.

With this configuration, the tubular member watertightly surrounds the penetrating portion formed in the impermeable sheet, and the closing means stops water between the tubular member and the hanging member.

The invention according to claim 2 is the configuration of the invention according to claim 1, wherein the tubular member is watertightly attached to a tubular body portion that surrounds the penetrating portion and extends upward, and a water-impervious sheet provided at the lower end of the tubular body portion. It includes a flange portion attached to the.

With this configuration, by attaching the flange portion to the impermeable sheet, the cylinder body is attached at a position surrounding the penetrating portion, and a water blocking structure that stops water between the impermeable sheet and the cylinder member is provided. can get.

The invention according to claim 3 is the configuration of the invention according to claim 1 or 2, wherein the closing means is provided in the middle of the hanging member and has a function of blocking water flow inside the suspension member. It has a shaft member on which at least a part thereof is arranged, and a water stopping means for stopping water between the inner surface of the tubular member and the outer surface of the shaft member.

With this configuration, water is stopped between the tubular member and the shaft member arranged inside the tubular member by the water blocking means.

The invention according to claim 4 includes, in the configuration of the invention according to claim 3, a columnar shaft main body portion and connecting portions provided at both ends of the shaft main body portion and to which suspension members are connected. It is incorporated in the middle of the hanging member.

With this configuration, the shaft member is incorporated at an intermediate position of the suspension member by connecting the suspension members to both ends of the shaft body portion.

The invention according to claim 5 is the configuration of the invention according to claim 3, wherein the shaft member includes a first division shaft portion and a second division shaft portion that are divided along the axial direction, and the first division. The shaft portion and the second split shaft portion are united with a hanging member sandwiched between them.

With this configuration, the shaft member is provided in the middle of the suspension member by combining the first split shaft portion and the second split shaft portion with the suspension member sandwiched between them.

The invention according to claim 6 further includes a filler that fills the internal spaces of the first division shaft portion and the second division shaft portion in the combined state in the configuration of the invention according to claim 5.

With this configuration, the internal spaces of the first split shaft portion and the second split shaft portion with the hanging member sandwiched between them are filled with the filler.

The invention according to claim 7 is the configuration of the invention according to any one of claims 3 to 6, wherein the water blocking means binds the outer peripheral surface of the tubular member to the inner surface of the tubular member and the outer surface of the shaft member. It is a binding member that brings the two into close contact with each other.

With this configuration, with the shaft member arranged inside the cylinder member, the outer peripheral surface of the cylinder member is bound by the binding member, and the inner surface of the cylinder member and the outer surface of the shaft member are brought into close contact with each other. Water is stopped between the shaft member and the shaft member.

The invention according to claim 8 is the configuration of the invention according to claim 1 or 2, wherein the closing means is a lid member attached in the middle of the hanging member and fitted into the opening above the tubular member, and the tubular member. It has a water stopping means for stopping water between the inner surface of the lid member and the outer surface of the lid member.

With this configuration, the opening above the tubular member is closed by the lid member fitted inside the tubular member, and water is stopped between the tubular member and the lid member by the water blocking means.

The invention according to claim 9 is the configuration of the invention according to claim 8, wherein the water blocking means is a binding member that binds the outer peripheral surface of the tubular member to bring the inner surface of the tubular member and the outer surface of the lid member into close contact with each other. Is.

With this configuration, with the lid member fitted inside the cylinder member, the outer peripheral surface of the cylinder member is bound by the binding member, and the inner surface of the cylinder member and the outer surface of the lid member are brought into close contact with each other. Water is stopped between the member and the lid member.

The invention according to claim 10 is the configuration of the invention according to claim 1 or 2, wherein the closing means is formed by deforming at least a part of the tubular member, and has an inner surface of the tubular member and an outer surface of the hanging member. It is a seal part that closes the space.

With this configuration, the seal portion formed by deforming at least a part of the tubular member closes the internal space of the tubular member to prevent water flow.

The invention according to claim 11 includes a waterproof resin layer interposed between the inner surface of the tubular member and the outer surface of the hanging member in the configuration of the invention according to claim 10.

With this configuration, the waterproof resin layer blocks water from flowing inside the tubular member.

According to the first aspect of the present invention, the water supplied to the upper surface of the impermeable sheet is prevented from entering the inside of the tubular member and reaching the penetrating portion, so that water leakage from the penetrating portion is prevented. ..

According to the invention of claim 2, in addition to the effect of the invention of claim 1, water stopping can be obtained by a simple operation of attaching the flange portion to the impermeable sheet. The flange portion can improve the stability of the cylinder body portion. Since water can be stopped on the wide surface of the flange, water can be stopped reliably.

According to the invention of claim 3, in addition to the effect of the invention of claim 1 or 2, a water blocking means is used to stop between the tubular member surrounding the penetrating portion and the shaft member arranged inside the tubular member. Since the structure is water-based, by preparing the tubular member and the shaft member, a reliable water-stopping structure can be constructed by a simple operation regardless of the shape of the hanging member. Therefore, the work efficiency of constructing the suspended scaffolding can be improved and the construction period can be shortened. Even if there is an error in the length of the hanging member, the error can be absorbed by using the axial length of the tubular member and the shaft member, so that the workability is good.

According to the invention of claim 4, in addition to the effect of the invention of claim 3, since the shaft member and the suspension member are integrated, when at least a part of the shaft member is arranged inside the tubular member, , The posture of the tubular member can be stabilized, and the reliability of the water stopping performance is improved.

According to the invention of claim 5, in addition to the effect of the invention of claim 3, since the shaft member can be provided on the existing hanging member, the cylinder does not need to be replaced or processed. It is possible to construct a waterproof means having excellent water stopping performance by the member and the shaft member.

According to the invention of claim 6, in addition to the effect of the invention of claim 5, since the first divided shaft portion and the second divided shaft portion and the hanging member are integrated by the filler, the shaft member Is prevented from moving in position with respect to the hanging member. Further, since the gap between the shaft member and the hanging member is sealed with the filler, a highly reliable waterproofing means can be provided.

According to the invention of claim 7, in addition to the effect of the invention of any one of claims 3 to 6, simply binding the outer peripheral surface of the tubular member with a binding member causes the tubular member and the shaft member to be connected. Since the water can be stopped between them, the water stopping work is easy. If the binding member is removed, the tubular member and the shaft member can be separated, so that the disassembly work after the construction is completed is easy. Moreover, each member can be reused.

According to the invention of claim 8, in addition to the effect of the invention of claim 1 or 2, there is a stop between the tubular member surrounding the penetrating portion and the lid member fitted in the opening above the tubular member. Since the water is stopped by water means, a reliable water stopping structure can be constructed by preparing a cylinder member and a lid member. Therefore, the work efficiency of constructing the suspended scaffolding can be improved and the construction period can be shortened.

According to the invention of claim 9, in addition to the effect of the invention of claim 8, water can be stopped between the cylinder member and the lid member only by binding the outer peripheral surface of the cylinder member with the binding member. Water work is easy. If the binding member is removed, the tubular member and the lid member can be separated, so that the disassembly work after the construction is completed is easy. Moreover, each member can be reused.

According to the invention of claim 10, in addition to the effect of the invention of claim 1 or 2, a seal portion formed by deforming at least a part of the tubular member prevents water from flowing inside the tubular member. Therefore, it is possible to provide a waterproof structure having a small number of constituent members.

According to the invention of claim 11, in addition to the effect of the invention of claim 10, by interposing a waterproof resin layer between the tubular member and the suspending member, the inner surface of the tubular member and the outer surface of the suspending member are formed. Even if the shape is complicated or the affinity between the two members is low, the water-stopping structure can be constructed by securely closing the space between the tubular member and the hanging member.

It is a perspective view which shows the suspension scaffolding by 1st Embodiment of this invention. It is a perspective view which shows the state which separated the tubular member in the suspension scaffolding by 1st Embodiment of this invention. It is sectional drawing of the suspension scaffold according to 1st Embodiment of this invention. It is sectional drawing which shows the waterproof means of the suspension scaffold shown in FIG. The present invention relates to a second embodiment, (A) is a perspective view showing a state in which a shaft member is divided into a first divided shaft portion and a second divided shaft portion, and (B). Is a perspective view showing a state in which the first split shaft portion and the second split shaft portion are combined and the shaft member is attached to the suspension member. It is a perspective view which shows an example of the lid member used for the suspension scaffolding by 3rd Embodiment of this invention. It is a perspective view which shows the state which separated the tubular member in the suspension scaffolding by 3rd Embodiment of this invention. It is a perspective view which shows the suspension scaffolding by 3rd Embodiment of this invention. It is sectional drawing of the waterproof means in the suspension scaffold according to the 3rd Embodiment of this invention. (A) is a perspective view showing a state in which the tubular member is separated in the suspension scaffold according to the fourth embodiment of the present invention, and (B) is an enlarged view of a situation in which a resin film is wound around a part of the suspension member. It is a figure which shows. It is a perspective view which shows the suspension scaffolding by 4th Embodiment of this invention. (A) is a cross-sectional view of a waterproofing means in a suspended scaffold according to a fourth embodiment of the present invention, and (B) is a cut end view taken along line bb of FIG. (A).

[First Embodiment]
FIG. 1 is a perspective view showing a suspended scaffold according to the first embodiment of the present invention, and FIG. 2 is a perspective view showing a state in which tubular members are separated in the suspended scaffold according to the first embodiment of the present invention. Yes, FIG. 3 is a cross-sectional view of the suspended scaffold according to the first embodiment of the present invention, and FIG. 4 is an enlarged sectional view showing the waterproofing means of the suspended scaffold shown in FIG.

The target to which the suspension scaffold 1 of this example is used is mainly a structure having a high height from the ground surface or water surface such as a bridge or an elevated road, but is not particularly limited.

With reference to each figure, the suspension scaffold 1 of this example is constructed in a state of being suspended from the structure, and the floor member 2 serving as a scaffold for the worker and the upper end side are attached to the structure. It includes a hanging member 3 whose lower end side is connected to the floor member 2 and holds the floor member 2 in a suspended state, and a water-impervious sheet 4 which is waterproof and is laid on the upper surface of the floor member 2. The impermeable sheet 4 is provided with a penetrating portion 5 for penetrating the hanging member 3 and a waterproof means 6 for blocking the flow of water in the penetrating portion 5. The waterproof means 6 of this example is watertightly attached to the upper surface of the impermeable sheet 4 and watertightly closes between the tubular member 20 that surrounds the penetrating portion 5 and extends upward, and the tubular member 20 and the hanging member 3. It has a closing means. The closing means in this example stops water between the shaft member 10 provided on the suspension member 3 and at least a part thereof arranged inside the cylinder member 20 and the inner surface of the cylinder member 20 and the outer surface of the shaft member 10. It has a binding member 30 as a water stopping means.

The floor member 2 includes a plate-shaped floor plate portion 2a made of metal, wood, or the like, and a frame portion 2b such as a steel pipe that supports the floor plate portion 2a. The frame portion 2b is provided with a connecting portion 2c made of metal fittings or the like for connecting the hanging member 3. The suspension member 3 is made of a metal chain, a reinforcing bar, or the like and has a tensile strength capable of supporting the load of the floor member 2 on which the worker is placed. The water-impervious sheet 4 that covers the upper surface of the floor member 2 without gaps has a water-impervious property such as synthetic resin and synthetic rubber, and even if an operator works on it, holes are easily opened or damaged. It is made of a material with non-risk strength.

It should be noted that the drawing shows only a part of the impermeable sheet 4, and in reality, the impermeable sheet 4 continuously spreads in the horizontal direction so as to cover the entire area serving as a scaffold for work. ..

The tubular member 20 constituting the waterproof means 6 is provided on a cylindrical tubular body 21 extending upward around the penetrating portion 5 and at the lower end of the cylindrical body 21, and is watertightly attached to the impermeable sheet 4. It has a flat plate-shaped flange portion 22. The tubular member 20 is assumed to have the same water-impervious performance and strength as the water-impervious sheet 4.

On the other hand, the shaft member 10 includes a columnar shaft main body portion 11 and connecting portions 12 provided at both ends of the shaft main body portion 11 and to which the suspension members 3 are connected. The outer diameter of the shaft main body 11 is set smaller than the inner diameter of the cylinder main body 21, and is made of metal, synthetic resin, synthetic rubber, etc., has a function of blocking water flow inside, and is suspended. It has the same tensile strength as the member 3. For example, a disk-shaped metal plate is welded to both ends of a steel pipe to form a shaft main body portion 11, and a U-shaped metal member is welded to the surface of the metal plate to form a connecting portion 12. In addition, it is conceivable to use a rod-shaped body made of synthetic resin, rust-preventive rubber, or the like.

For the binding member 30, which is a water stopping means, for example, a binding band, a hose band, a wire, or the like is used to bind the outer peripheral surface of the cylinder body 21 of the cylinder member 20 to bind the inner surface 21a of the cylinder body 21 and the shaft member 10. By bringing the outer surface 11a of the shaft main body 11 into close contact with the outer surface 11a, water is stopped between the two.

The outline of the procedure for constructing the suspension scaffold 1 described above is as follows. First, the hanging member 3 is connected to each of the connecting portions 12 at both ends of the shaft main body portion 11, and the hanging member 3 in which the shaft member 10 is incorporated in an appropriate position is prepared in advance. Then, after the portion of the suspension member 3 above the shaft member 10 is inserted into the cylinder body 21 of the cylinder member 20, the cylinder member 20 is temporarily fixed to the suspension member 3. Next, a cut is made in a portion of the impermeable sheet 4 laid on the upper surface of the floor member 2 corresponding to the connecting portion 2c of the floor member 2 to form the penetrating portion 5. Subsequently, the lower end portion of the hanging member 3 is connected to the connecting portion 2c of the floor member 2 via the penetrating portion 5. At this time, the portion of the impermeable sheet 4 cut up to form the penetrating portion 5 may be adhered to the hanging member 3 (see FIG. 2). Subsequently, the tubular member 20 is moved downward along the suspension member 3, and the flange portion 22 is watertightly adhered to the surface of the impermeable sheet 4 with at least a part of the shaft member 10 inserted therein. .. Then, by binding the outer peripheral surface of the cylinder body 21 with the binding member 30, the inner surface 21a of the cylinder body 21 and the outer surface 11a of the shaft body 11 are brought into close contact with each other, and water is stopped between the two (see FIG. 4). ..

The suspended scaffold 1 configured in this way has the following advantages. In the waterproofing means 6, the cylinder body 21 and the flange 22 of the cylinder member 20 watertightly surround the penetrating portion 5, and the cylinder body 21 of the cylinder member 20 and the shaft arranged inside the binding member 30. Since the water is stopped between the member 10 and the shaft main body 11, even if the cleaning wastewater is supplied to the upper surface of the impermeable sheet 4, it is prevented from entering the inside of the tubular member 20 and reaching the penetrating portion 5. This prevents water from leaking from the penetrating portion 5.

The waterproof means 6 prepares the tubular member 20 and the shaft member 10, and stops water between the tubular member 20 surrounding the penetrating portion 5 and the shaft member 10 arranged inside the tubular member 20 by a water blocking means such as a binding member 30. Therefore, regardless of the shape of the hanging member 3, a reliable water-stopping structure can be constructed by a simple operation. As a result, the work efficiency of constructing the suspended scaffolding can be improved and the construction period can be shortened.

Further, since the binding member 30 simply binds the outer peripheral surface of the cylinder body 21 of the cylinder member 20 to stop water between the cylinder member 20 and the shaft member 10, the water stopping work is easy. Further, since the tubular member 20 and the shaft member 10 can be easily separated by simply removing the binding member 30, the disassembly work after the construction is completed is easy, and each member can be reused.

Further, even if there is an error in the length of the suspension member 3, the error can be absorbed by using the axial lengths of the tubular member 20 and the shaft member 10, so that the workability of the suspension scaffold 1 is good. ..

Further, since the tubular member 20 has the flange portion 22, a waterproof structure between the impermeable sheet 4 and the tubular member 20 can be constructed by a simple operation of adhering the flange portion 22 to the impermeable sheet 4, and the flange. Since the wide surface of the portion 22 is brought into close contact with the water-impervious sheet 4, the water-stopping property can be ensured and the stability of the cylinder main body portion 21 can be improved.

On the other hand, with respect to the shaft member 10, at least one of the shaft members 10 is configured so that the shaft member 10 is integrally incorporated into the suspension member 3 by connecting the suspension members 3 to the connection portions 12 at both ends of the shaft main body portion 11. When the portion is arranged inside the tubular member 20, the posture of the tubular member 20 can be stabilized, and the reliability of the water stopping performance can be improved.

[Second Embodiment]
FIG. 5 relates to a second embodiment of the present invention, and FIG. 5A is a perspective view showing a state in which the shaft member is divided into a first divided shaft portion and a second divided shaft portion. , (B) is a perspective view showing a state in which the first split shaft portion and the second split shaft portion are united and the shaft member is attached to the suspension member.

The shaft member 13 of this example can be mounted on the existing hanging member later instead of being incorporated in the hanging member in advance. Therefore, the shaft member 13 includes the first split shaft portion 14 and the second split shaft portion 15 that are split along the axial direction, and the suspension member 3 is sandwiched between the first split shaft portion 14 and the first split shaft portion 14. By combining with the second split shaft portion 15, the shaft member 13 can be provided in the middle of the suspension member 3.

Specifically, the first dividing shaft portion 14 and the second dividing shaft portion 15 have a semi-cylindrical shape, and semi-circular lid plate portions 14a and 15a are provided at the upper ends thereof, and the lid plate portions 14a are provided. , 15b are formed with notches 14b and 15b that match the shape of the hanging member 3 at the edge portion of 15a. The first split shaft portion 14 and the second split shaft portion 15 formed in this way are united with the suspension member 3 sandwiched between the cutout portions 14b and 15b, and both are combined with bolts or the like. By fastening with a connecting tool 17 or the like, the shaft member 13 having a cylindrical shape can be provided on the hanging member 3. At this time, the cutouts 14b and 15b are united to form an insertion hole 16 through which the suspension member 3 is inserted. If necessary, water-stopping packing or the like may be arranged at the joint portion and the insertion hole 16 between the first division shaft portion 14 and the second division shaft portion 15.

With such a configuration, the shaft member 13 can be attached to the existing suspension member 3 by combining the first split shaft portion 14 and the second split shaft portion 15. As a result, it is possible to construct a waterproof means having excellent water stopping performance by the tubular member and the shaft member without replacing or processing the existing hanging member.

[Third Embodiment]
FIG. 6 is a perspective view showing an example of a lid member used for the suspension scaffold according to the third embodiment of the present invention, and FIG. 7 is a perspective view showing a tubular member separated in the suspension scaffold according to the third embodiment of the present invention. FIG. 8 is a perspective view showing the suspended scaffold according to the third embodiment of the present invention, and FIG. 9 is a perspective view showing the waterproof means in the suspended scaffold according to the third embodiment of the present invention. It is a cross-sectional view.

In this example, as the closing means, between the lid member 40 which is attached in the middle of the hanging member 3 and fits into the opening 26 above the tubular member 23, and the inner surface 23a of the tubular member 23 and the outer surface 40a of the lid member 40. It has a binding member 30 as a water stopping means for stopping water.

The lid member 40 of this example has a main body portion 41 made of, for example, hard rubber, and the main body portion 41 is connected by a hinge portion 42 and is formed so as to be openable and closable around the hinge portion 42. It consists of two semi-cylindrical parts. Further, on each inner surface of the two semi-cylindrical portions facing each other when the main body portion 41 is opened and closed, a recess 43 having a shape suitable for the outer surface shape of the hanging member 3 is formed, and elastic compression is possible and non-existent. A water-permeable seal member 44 is attached. The material of the sealing member 44 is a plastic foam having closed cells, soft rubber, or the like.

The tubular member 23 may have a cylindrical shape similar to that of the first embodiment, but in this example, a truncated cone-shaped tubular main body 24 extending upward and a water-impervious sheet provided at the lower end of the truncated cone 24 are provided. It is assumed that it has a ring plate-shaped flange portion 25 that is watertightly attached to No. 4.

In order to construct the waterproof means 6, the tubular member 23 is temporarily fixed in advance at a position above the lid member 40 in the hanging member 3. Then, the hanging member 3 is connected to the floor member 2 via the penetrating portion 5. Next, the lid member 40 is mounted in the middle of the hanging member 3 with the hanging member 3 sandwiched in the main body 41 using the recess 43 of the lid member 40. Subsequently, the tubular member 20 was moved downward along the hanging member 3, the flange portion 25 was adhered to the surface of the impermeable sheet 4, and the lid member 40 was fitted into the opening 26 of the tubular member 23. Make it a state. Subsequently, by binding the outer peripheral surface of the tubular member 23 near the opening 26 with the binding member 30, the inner surface 23a of the tubular member 23 and the outer surface 40a of the lid member 40 are brought into close contact with each other, and water is stopped between the two (FIG. 9). reference).

At this time, the seal member 44 of the lid member 40 watertightly fills the gap between the main body 41 and the suspension member 3 made of, for example, a chain, to prevent water from entering the inside of the tubular member 23. , A waterproof means with a simple configuration and reliable water stopping performance is constructed.

As described above, in this example, since the lid member 40 as shown in FIG. 6 is used as the closing means, it is possible to construct the waterproof means later on the existing hanging member, and the existing hanging member can be replaced. It is possible to provide a waterproof means having excellent water stopping performance without processing.

[Fourth Embodiment]
FIG. 10A is a perspective view showing a state in which the tubular member is separated in the suspension scaffold according to the fourth embodiment of the present invention, and FIG. 10B is a situation in which a resin film is wound around a part of the suspension member. 11 is a perspective view showing a suspended scaffold according to a fourth embodiment of the present invention, and FIG. 12 (A) is a suspended scaffold according to a fourth embodiment of the present invention. It is a cross-sectional view of the waterproofing means in the above, and FIG.

In this example, the closing means is composed of a seal portion S formed by deforming at least a part of the tubular member 27 to close between the inner surface of the tubular member 27 and the outer surface of the hanging member 3.

In order to construct the waterproof means 6, first, the tubular member 27 is temporarily fixed in advance at an appropriate upper position of the hanging member 3. Similar to the third embodiment, the tubular member 27 has a truncated cone-shaped tubular body 28 extending upward and a ring provided at the lower end of the truncated cone 28 and watertightly attached to the impermeable sheet 4. It has a plate-shaped flange portion 29. The cylinder body 28 is made of a thermoplastic resin such as vinyl chloride or polyethylene in order to facilitate the deformation work described later.

Next, the hanging member 3 is connected to the floor member 2 via the penetrating portion 5, and then the resin film 50 for forming the waterproof resin layer is wound around the hanging member 3 at an appropriate height position (FIG. 10B). reference). As the material of the resin film 50, the same type as the cylinder body 28 or a type having a good affinity with the cylinder body 28 is selected.

Subsequently, the tubular member 27 is moved downward along the suspension member 3, and the flange portion 29 is adhered to the surface of the impermeable sheet 4. In this state, the cylinder body 28 of the cylinder member 27 is sandwiched and heated by using, for example, a heat sealing device or the like so as to correspond to the position where the resin film 50 is wound on the suspension member 3. As a result, at least a part of the cylinder body 28 is deformed, and at the same time, the resin film 50 is also melt-deformed and brought into close contact with the outer surface 3a of the hanging member 3. As a result, the molten resin film forms a waterproof resin layer 51 that closes between the inner surface 28a of the cylinder body 28 and the outer surface 3a of the hanging member 3, and the sealing portion that prevents water from flowing through the cylinder member 27. S will be constructed in the middle portion of the tubular member 27 (see FIG. 12B).

As described above, in this example, since the seal portion S as shown in FIG. 12 is adopted as the closing means, it is possible to construct the waterproof means later on the existing hanging member, and the existing hanging member can be replaced. It is possible to provide a waterproof means having excellent water stopping performance without processing. Further, since the resin film is melted to form a waterproof resin layer, even if the inner surface shape of the tubular member or the outer surface shape of the hanging member is complicated or the affinity between the tubular member and the hanging member is low, between the two. A seal portion that blocks water flow can be reliably formed. Further, since the number of members is small, the waterproofing means can be provided at low cost.

In the first to third embodiments, a binding member is used as the water blocking means, but instead of this, an adhesive, a foamed plastic material, or the like is used between the shaft member or the lid member and the tubular member. It may be filled.

The shaft member may have a double pipe structure or the like and may have a length adjusting function.

The floor member may have a structure in which the frame portion is omitted and the hanging member is directly connected to the floor plate portion.

In the second embodiment, the internal space formed when the first split shaft portion and the second split shaft portion are combined may be filled with a filler such as foam rubber or foamed plastic. .. With this configuration, the filler integrates the first split shaft portion and the second split shaft portion with the suspension member, so that the shaft member is prevented from moving in position with respect to the suspension member. Further, since the gap between the shaft member and the hanging member is sealed with a filler, a more reliable waterproofing means can be provided.

Further, the tubular member may be opened and closed by providing a notch. If the tubular member is configured in this way, the notch portion is opened and the existing hanging member is inserted inside, and then the notch portion is adhered and stopped after being attached so as to surround the penetrating portion of the impermeable sheet. Can be water-based. Therefore, by making this tubular member and the shaft member of the second embodiment cooperate with each other, it is possible to provide the existing hanging scaffold with the waterproof means of the present invention.

In the third embodiment, an adhesive layer may be provided in the openable / closable surface region of the lid member that sandwiches the suspension member so that the closed state in which the suspension member is sandwiched is maintained.

In the fourth embodiment, as a method of forming a seal portion by deforming at least a part of the tubular member, high frequency welding or ultrasonic welding may be used in addition to heat welding by a heat sealing device or the like. .. As a means for forming the waterproof resin layer, instead of the resin film, two resin sheets are prepared, and these are attached to the hanging member so as to sandwich the hanging member between them, and this is melted when the tubular member is deformed. It may be. Further, in addition to melting the resin film, an adhesive may be applied to the inner surface of the tubular member to form a waterproof resin layer. In this case, a waterproof resin layer made of an adhesive that closes between the inner surface of the tubular member and the outer surface of the hanging member is formed by sandwiching and heating the portion of the tubular member corresponding to the application area of the adhesive. May be good. Further, the resin film can be omitted. In this case, the sealing portion is formed by melting the inner surface of the tubular member and directly bringing it into close contact with the outer surface of the hanging member.

1 ... Suspended scaffold 2 ... Floor member 2a ... Floor plate part 2b ... Frame part 2c ... Connecting part 3 ... Suspended member 4 ... Impermeable sheet 5 ... Penetration part 6 ... Waterproof means 10 ... Shaft member 11 ... Shaft body part 11a ... Outer surface 12 ... Connection portion 13 ... Shaft member 14 ... First division shaft portion 14a ... Lid plate portion 14b ... Notch portion 15 ... Second division shaft portion 15a ... Lid plate portion 15b ... Notch portion 16 ... Insertion hole 17 ... Connecting tool 20 ... Cylinder member 21 ... Cylinder body 21a ... Inner surface 22 ... Flange 23 ... Cylinder member 24 ... Cylinder body 25 ... Flange 26 ... Opening 27 ... Cylinder member 28 ... Cylinder body 28a ... Inner surface 29 ... Flange 30 ... Bundling member 40 ... Lid member 41 ... Main body 42 ... Hinge 43 ... Recess 44 ... Sealing member 50 ... Resin film 51 ... Waterproof resin layer S ... Sealing The same reference numerals in each figure indicate the same or corresponding parts.

Claims (11)

A hanging scaffold built below the structure
A floor member, a hanging member that holds the floor member in a suspended state, a water-impervious sheet that is waterproof and has a penetrating portion that is laid on the upper surface of the floor member and that penetrates the hanging member, and the penetrating portion. Including waterproofing measures to block the flow of water in
The waterproof means is watertightly attached to the upper surface of the water-impervious sheet, surrounds the penetrating portion, surrounds the suspension member, and extends upward, and watertightly between the cylinder member and the suspension member. Suspended scaffolding, which has a closing means for closing in. The first aspect of the present invention, wherein the tubular member includes a tubular main body portion that surrounds the penetrating portion and extends upward, and a flange portion that is provided at the lower end of the tubular main body portion and is watertightly attached to the water-impervious sheet. Suspended scaffolding. The closing means is provided in the middle of the suspending member and has a function of blocking water flow inside the shaft member, and at least a part thereof is arranged inside the tubular member, an inner surface of the tubular member, and the above. The suspension scaffold according to claim 1 or 2, further comprising a water stopping means for stopping water from the outer surface of the shaft member. The suspension scaffold according to claim 3, wherein the shaft member includes a columnar shaft body portion and connecting portions provided at both ends of the shaft body portion and to which the suspension member is connected, and is incorporated in the middle of the suspension member. .. The shaft member includes a first split shaft portion and a second split shaft portion that are divided along the axial direction, and the first split shaft portion and the second split shaft portion have the suspension member in between. The suspended scaffold according to claim 3, which is combined in a sandwiched state. The suspension scaffold according to claim 5, further comprising a filler that fills the internal space of the first split shaft portion and the second split shaft portion in a combined state. The suspension according to any one of claims 3 to 6, wherein the water stopping means is a binding member that binds the outer peripheral surface of the tubular member so that the inner surface of the tubular member and the outer surface of the shaft member are brought into close contact with each other. scaffold. The closing means is a water stopping means for stopping water between a lid member attached in the middle of the hanging member and fitted into an opening above the tubular member, and an inner surface of the tubular member and an outer surface of the lid member. The suspension scaffold according to claim 1 or 2, having the above. The suspension scaffold according to claim 8, wherein the water stopping means is a binding member that binds the outer peripheral surface of the tubular member so that the inner surface of the tubular member and the outer surface of the lid member are brought into close contact with each other. The first or second aspect of the present invention, wherein the closing means is a seal portion formed by deforming at least a part of the tubular member to close between the inner surface of the tubular member and the outer surface of the hanging member. Suspended scaffolding. The suspension scaffold according to claim 10, wherein the seal portion includes a waterproof resin layer interposed between the inner surface of the tubular member and the outer surface of the suspension member.

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