Building material sheet roll holder and building material sheet embedding method

Abstract

The present invention provides a building material sheet roll holder that can be securely attached to scaffolding and allows for easy replacement of the roll, as well as a building material sheet embedding method that enables efficient embedding of sheet-like building materials into mortar. [Solution] The building material sheet roll holder 1, which holds a roll R on which a sheet-like building material S is wound, is characterized by comprising a shaft body 10 that penetrates the core of the roll R and supports the roll R, and a clamping part 20 that is positioned at one end 10a of the shaft body 10 and clamps a pipe body P that constitutes scaffolding. The building material sheet embedding method is characterized by comprising the steps of: holding the roll R with the building material sheet roll holder 1; clamping the clamping part 20 of the building material sheet roll holder 1 onto the pipe body P so that the shaft body 10 of the building material sheet roll holder 1 is parallel to the wall surface W; pulling out the sheet-like building material S from the roll R; and attaching the pulled-out sheet-like building material S to the surface of mortar M and then embedding it in mortar M.

Description

Technical Field

[0001] The present invention relates to a building material sheet roll holder for holding a roll in which a sheet-like building material is wound, and a method for embedding a sheet-like building material in mortar applied to a wall surface.

Background Art

[0002] Mortar is often used as a base material for building walls. Mortar is excellent in strength and durability, but cracks may occur due to drying or external influences. In order to prevent such cracks, a construction method is known in which an alkali-resistant glass fiber net is embedded after applying mortar and before it dries (see Patent Document 1).

[0003] This alkali-resistant glass fiber net usually circulates in a rolled state. Therefore, at the construction site, a construction method has been used in which first, a necessary length is pulled out from the roll on the ground, cut, then carried up the scaffold, and pasted at a predetermined position.

[0004] However, in this construction method, the net is cut several times during construction, and it is necessary to climb the scaffold and carry the net each time. Also, when the place where the net is cut is far from the wall surface where the net is pasted, it is difficult to intuitively understand the required length of the net, so the length may be insufficient after cutting, or conversely, an excess may occur.

[0005] On the other hand, there is known a holder for holding a roll in which a sheet used in construction work or the like is wound, and which is used by hanging it on a scaffold (see Patent Document 2). The holder described in Patent Document 2 is provided with a hook at its end, and by hanging the hook on the scaffold, it is possible to hold the roll near the construction site.

[0006] However, the holder described in Patent Document 2 has the problem that it can only install the roll vertically because it is suspended from a scaffolding member and is unstable. In addition, when setting the roll in this holder, it is necessary to release the connection between the shaft and the handle, which makes changing the roll troublesome. [Prior art documents] [Patent Documents]

[0007] [Patent Document 1] Japanese Patent Publication No. 2003-253842 [Patent Document 2] Japanese Patent Publication No. 2005-82260 [Overview of the project] [Problems that the invention aims to solve]

[0008] In view of the above problems, the present invention aims to provide a building material sheet roll holder that can be securely attached to scaffolding and allows for easy replacement of the roll, and a building material sheet embedding method that enables efficient embedding of sheet-like building materials in mortar. [Means for solving the problem]

[0009] The building material sheet roll holder according to the present invention was made to solve the above problems, and is a building material sheet roll holder that holds a roll on which a sheet of building material is wound, and is characterized by comprising a shaft body that penetrates the core of the roll and supports the roll, and a clamping part that is arranged at one end of the shaft body and clamps a pipe body that constitutes a scaffold.

[0010] This invention provides a building material sheet roll holder that can be securely attached to scaffolding and allows for easy replacement of the roll.

[0011] Another building material sheet roll holder according to the present invention is characterized in that a protruding portion projecting radially outward from the shaft body is detachably attached to the shaft body at a position facing the clamping portion with the roll in between.

[0012] According to this invention, a building material sheet roll holder can be provided in which a protruding portion restricts the axial movement of the roll, thereby stably holding the roll, and the roll can be replaced by removing the protruding portion.

[0013] The building material sheet embedding method according to the present invention is a building material sheet embedding method for embedding a sheet-like building material in mortar applied to a wall surface, and is characterized by comprising the steps of: holding a roll on which the sheet-like building material is wound in a building material sheet roll holder according to the present invention; clamping the clamping portion of the building material sheet roll holder onto a pipe constituting a scaffolding so that the shaft of the building material sheet roll holder is parallel to the wall surface; pulling out the sheet-like building material from the roll held by the building material sheet roll holder; and attaching the pulled-out sheet-like building material to the surface of the mortar and then embedding it in the mortar.

[0014] This invention provides a method for embedding building material sheets, which involves placing a roll of sheet-like building material near the wall surface to be constructed, and efficiently embedding the sheet-like building material into mortar. [Effects of the Invention]

[0015] According to the present invention, it is possible to provide a building material sheet roll holder that can be securely attached to scaffolding and allows for easy replacement of the roll, and a building material sheet embedding method that enables efficient embedding of sheet-like building materials in mortar. [Brief explanation of the drawing]

[0016] [Figure 1]This figure shows a building material sheet roll holder according to an embodiment of the present invention, where (a) is a front view, (b) is an enlarged view of the direction indicated by arrow AA in (a), and (c) is a partial cross-sectional view showing an enlarged portion of the cross-section near the movement restricting portion. [Figure 2] This is a cross-sectional view showing an enlarged view of the clamping portion of a building material sheet roll holder according to an embodiment of the present invention, with the clamping portion connected to a pipe, and cut by a plane passing through the center of the pipe. [Figure 3] This figure shows a building material sheet roll holder according to an embodiment of the present invention, coupled to a pipe constituting scaffolding, and holding a roll on which a sheet of building material is wound, wherein (a) is a front view and (b) is a cross-sectional view showing the BB section of (a). [Figure 4] This figure shows modified examples of the building material sheet roll holder according to the present invention, where (a) is a partial cross-sectional view of the first modified example viewed in the same manner as in Figure 1(c), and (b) is a partial cross-sectional view of the second modified example viewed in the same manner as in Figure 1(c). [Figure 5] This diagram illustrates a method for embedding building material sheets according to an embodiment of the present invention, and is a cross-sectional view of a wall surface coated with mortar, where (a) shows the state in which the sheet has been pulled out from the roll, (b) shows the state in which the pulled-out sheet has been cut and brought closer to the mortar, and (c) shows the state in which the sheet has been embedded in the mortar. [Modes for carrying out the invention]

[0017] Next, embodiments of a building material sheet roll holder and a building material sheet embedding method to which the present invention is applied will be described with reference to the drawings. The embodiments described below are preferred embodiments of the present invention and therefore have various technically preferable limitations. However, the scope of the present invention is not limited to these embodiments unless otherwise stated in the following description.

[0018] (Embodiment of a building material sheet roll holder) An embodiment of a building material sheet roll holder according to the present invention will be described based on FIGS. 1 to 3. FIG. 1 is a view showing the building material sheet roll holder according to the embodiment of the present invention, where (a) is a front view, (b) is an enlarged view taken along the line A-A in (a), and (c) is a partial cross-sectional view showing a partially enlarged cross-section in the vicinity of the movement restricting portion. FIG. 2 is a cross-sectional view showing an enlarged cross-section of the clamping portion when the building material sheet roll holder according to the embodiment of the present invention is coupled to a tubular body, cut along a plane passing through the center of the tubular body. FIG. 3 is a view showing a state where the building material sheet roll holder according to the embodiment of the present invention is coupled to a tubular body constituting a scaffold and holds a roll around which a sheet-shaped building material is wound, where (a) is a front view and (b) is a cross-sectional view showing the cross-section B-B in (a).

[0019] The building material sheet roll holder 1 according to the present embodiment is a device that efficiently holds a sheet-shaped building material (such as an alkali-resistant glass fiber net) wound in a roll shape so that an operator can easily pull it out and use it at a construction site. The building material sheet roll holder 1 mainly includes a shaft body 10, a clamping portion 20, and a protruding portion 31. The roll around which the sheet-shaped building material is wound has a hollow core at its center portion.

[0020] The shaft body 10 of the building material sheet roll holder 1 is inserted into and penetrates the core of the roll to support the roll. The shaft body 10 is tubular, and a spring 42 is accommodated inside. A pair of protruding bodies 41, 41 that can protrude and retract in the radial direction are each applied with an elastic force toward the outside in the radial direction by the spring 42. The actions of the protruding body 41 and the spring 42 will be described later.

[0021] A clamping portion 20 for clamping a tubular body P constituting a scaffold is provided at one end 10a of the shaft body 10. As shown in FIG. 1(b), the clamping portion 20 includes a fixed portion 21 and a movable portion 22, and the fixed portion 21 is coupled to the shaft body 10. The movable portion 22 is rotatably supported with respect to the fixed portion 21 around a rotation axis 23. By sandwiching the tubular body P between the fixed portion 21 and the movable portion 22, the building material sheet roll holder 1 can be firmly fixed to the tubular body P.

[0022] As shown in Figure 1(b), the clamping portion 20 has an adjustment portion 24, which allows adjustment of the distance between the fixed portion 21 and the movable portion 22 when clamping the pipe body P. The adjustment portion 24 includes a bolt 24a, a nut 24b fitted onto the bolt 24a, and a rotating shaft 24c that rotatably supports the bolt 24a relative to the fixed portion 21. By rotating the bolt 24a along the rotating shaft 24c so that the nut 24b covers the movable portion 22, and then rotating the nut 24b to move it toward the movable portion 22, the distance between the fixed portion 21 and the movable portion 22 can be adjusted. This adjustment makes it possible to adjust the clamping force on the pipe body P.

[0023] As shown in Figure 1(c), a movement restricting part 30 is attached to the shaft 10. The movement restricting part 30 has a cylindrical part 32 that houses the shaft 10 and a protruding part 31 consisting of a flange that protrudes outward in the axial direction. The protruding part 31 is positioned opposite the clamping part 20, sandwiching the roll between them. That is, the axial length of the roll (the width of the sheet-like building material) is contained between the clamping part 20 and the protruding part 31. The radial length of the protruding part 31 should be greater than the diameter of the hollow core of the roll. The protruding part 31 prevents the roll from moving along the shaft 10 and prevents the roll from coming off the shaft 10 during operation.

[0024] The cylindrical portion 32 of the movement restricting section 30 is provided with a hole 32a that penetrates radially. When the projection 41 provided on the shaft 10 fits into the hole 32a, the movement restricting section 30 is fixed to the shaft 10. When the projection 41 is pushed radially inward, the projection 41 disengages from the hole 32a, making it possible to move the movement restricting section 30 relative to the shaft 10. When the movement restricting section 30 is removed from the shaft 10, the roll can be attached to and detached from the other end 10b. The positions of the movement restricting section 30 and the projection 31 can be arbitrarily set according to the axial length of the roll to be held (width of the sheet-like building material).

[0025] Next, the force with which the clamping portion 20 clamps the pipe will be explained based on Figure 2. The pipe P that constitutes the scaffolding is sandwiched between the fixed portion 21 and the movable portion 22. In this embodiment, the fixed portion 21 is a sheet metal part formed by bending a plate, and the edges 21a and 21b of the plate are in contact with the pipe P.

[0026] The building material sheet roll holder 1, which holds the roll, is cantilevered and connected to the pipe P, and a clockwise rotational moment acts on the clamping portion 20 as shown in Figure 2. Due to this rotational moment, a large concentrated load is applied to the edge 21b of the fixing portion 21 toward the pipe P. This load causes the edge 21b to bite into the pipe P, generating a large frictional force. This frictional force firmly fixes the building material sheet roll holder 1 to the pipe P.

[0027] With the above configuration, the building material sheet roll holder 1 according to this embodiment can be securely attached to the pipe P that constitutes the scaffolding, and workers can directly pull out the required length of sheet-like building material from the roll held there, reducing the effort of transportation. In addition, the movement restricting part 30 attached to the shaft 10 prevents the roll from moving in the axial direction, enabling stable holding of the roll and improving work efficiency and safety on site. Furthermore, since the shaft 10 is cantilevered with only one end 10a supported, the roll can be easily attached and detached from the other end 10b simply by removing the movement restricting part 30 having the protruding part 31 from the shaft 10.

[0028] Next, with reference to Figure 3, we will describe the state in which the building material sheet roll holder 1 according to an embodiment of the present invention is connected to a tubular body constituting the scaffolding and holds a roll on which a sheet-like building material is wound. The scaffolding K shown in Figure 3(a) is installed near the wall surface W that is the target of construction and has vertically extending support columns L and horizontally extending horizontal members H. Both the support columns L and the horizontal members H are made of tubular bodies, and the support columns L and the horizontal members H are appropriately connected with clamps.

[0029] The building material sheet roll holder 1 is connected to the pipe P that constitutes the support column L using a clamping portion 20, and the shaft 10 is connected so that it extends horizontally. As shown in Figure 3(b), the shaft 10 is positioned parallel to the wall surface W and functions as a support for holding the roll R. A sheet of building material S is pulled out from the roll R held by the shaft 10, and the pulled-out sheet of building material S is parallel to the wall surface W.

[0030] (Modified example of a building material sheet roll holder) Next, with reference to Figure 4, modified examples of the building material sheet roll holder 1 according to an embodiment of the present invention will be described. Figure 4 is a diagram showing modified examples of the building material sheet roll holder according to the present invention, where (a) is a partial cross-sectional view of the first modified example viewed in the same way as in Figure 1(c), and (b) is a partial cross-sectional view of the second modified example viewed in the same way as in Figure 1(c). The following modified examples are examples of configurations in which the projection 41 and spring 42 are not used, and a projection is provided on the shaft 10.

[0031] In the first modified example shown in Figure 4(a), the movement restricting portion 30 of the building material sheet roll holder 1 is fixed to the shaft 10 by a pin 42. In this structure, the shaft 10 has a hole 10c that penetrates radially, and the cylindrical portion 32 of the movement restricting portion 30 has a hole 32a that penetrates radially, and the pin 42 is inserted so as to penetrate the holes 32a and 10c. The movement restricting portion 30 is fixed to the shaft 10 by this pin 42, and the protruding portion 31 of the movement restricting portion 30 prevents the roll from moving in the axial direction.

[0032] In the second modified example shown in Figure 4(b), an L-shaped pin 43 is inserted into the shaft 10 instead of the movement restricting part 30 in the building material sheet roll holder 1. This pin 43 is inserted through holes 10c and 10d that are provided to penetrate radially through the shaft 10, and at least one of the tip 43a and the handle 43b of the pin 43 protrudes radially outward from the shaft 10. At least one of the tip 43a and the handle 43b of this pin 43 functions as a protrusion, preventing the roll from moving in the axial direction.

[0033] Furthermore, instead of the pin 43, a pin with a T-shaped handle can be used, thereby restricting the axial movement of the roll. Alternatively, instead of inserting a pin, a female thread can be formed in a hole provided in the shaft 10, and a bolt can be screwed into this female thread, causing the bolt to act as a protrusion. In addition, any other method can be used to provide a protrusion on the shaft 10.

[0034] (Embodiment of the method for embedding building material sheets) Next, an embodiment of the building material sheet embedding method according to the present invention will be described with reference to Figure 5. Figure 5 is a diagram illustrating the building material sheet embedding method according to an embodiment of the present invention, and is a cross-sectional view of a wall surface coated with mortar, where (a) shows the state in which the sheet has been pulled out from the roll, (b) shows the state in which the pulled-out sheet has been cut and brought closer to the mortar, and (c) shows the state in which the sheet has been embedded in the mortar.

[0035] First, as shown in Figure 5(a), a roll R on which a sheet-like building material S is wound is held by a building material sheet roll holder 1, and the building material sheet roll holder 1 is connected to scaffolding installed near the wall surface W that is to be constructed. Here, alkali-resistant glass fiber net is used as the sheet-like building material S, and crack prevention is achieved by embedding it in mortar M. The building material sheet roll holder 1 has a clamping part 20 that clamps the pipe that constitutes the support column of the scaffolding, and the shaft body 10 extends horizontally. The shaft body 10 is also positioned parallel to the wall surface W, so the sheet-like building material S pulled out from the roll R is parallel to the wall surface W. Note that the roll R may be held by the building material sheet roll holder 1 and then the building material sheet roll holder 1 may be connected to the scaffolding, or the roll may be held by the building material sheet roll holder 1 and then the roll may be held by the building material sheet roll holder 1.

[0036] Next, as shown in Figure 5(b), the sheet-like building material S is pulled out from the roll R to the required length for construction and cut. At the time of cutting, the sheet-like building material S is parallel to the wall surface W. From here, the sheet-like building material S is moved perpendicular to the wall surface W and attached to the surface of the mortar M.

[0037] Next, as shown in Figure 5(c), the sheet-shaped building material S is embedded in the mortar M. Specifically, after attaching the sheet-shaped building material S to the surface of the mortar M, the sheet-shaped building material S is pressed down and rubbed with a trowel, causing it to be embedded from the surface into the mortar M. When embedding the sheet-shaped building material S in a different location on the wall surface W to be constructed, the clamping part 20 is detached from the support column, and the building material sheet roll holder 1 is moved to the desired construction position. Then, the clamping part 20 is reattached to the support column, and the sheet-shaped building material S is pulled out and embedded in the mortar M in the same manner.

[0038] Alternatively, instead of cutting the sheet-like building material S and then attaching it to the surface of the mortar M, one can choose to pull out the required length of the sheet-like building material S, attach it directly to the surface of the mortar M, and then cut it from the roll R.

[0039] Furthermore, the building material sheet roll holder 1 can be attached to a horizontal member of the scaffolding instead of a vertical support column. In this case, the shaft 10 will extend vertically, and the sheet-like building material S will be pulled out from the roll R in the left-right direction.

[0040] Furthermore, when the building material sheet roll holder 1 is attached to a horizontally extending horizontal member and positioned so that the clamping portion 20 is facing downwards, there is little risk of the roll R coming off the other end 10b (see Figure 1) of the shaft 10, and it is possible to omit the movement restricting portion 30 and the protruding portion 31. In this case, the roll R can be attached and detached from the other end 10b of the shaft 10 without removing the movement restricting portion 30 and the protruding portion 31.

[0041] Furthermore, it is also possible to attach the building material sheet roll holder 1 to a horizontally extending horizontal member and position it so that the other end 10b of the shaft body 10 is facing downwards. In this case, the protruding portion 31 of the movement restricting portion 30 prevents the roll R from falling off.

[0042] In the above explanation, it was stated that alkali-resistant glass fiber netting is used as the sheet-like building material S, but it is not limited to this, and any sheet-like building material made of any material can be used. [Explanation of Symbols]

[0043] 1. Building material sheet roll holder 10 Axis Body 10a one end 10b Other end 10c hole 20 Clamping part 21 Fixed part 21a Edge 21b Edge 22 Moving parts 23 Rotation axis 24 Adjustment part 24a volt 24b nut 30 Movement Restriction Department 31 Protrusion 32 Cylinder part 32a hole 41 Protrusion 42 Springs 43 pins 43a Tip 43b Handle M Mortar W Wall R Roll S Sheet-shaped building material P-type body L post H Horizontal material K Scaffolding

Claims

1. A building material sheet roll holder that holds a roll on which sheet-like building materials are wound, A shaft body that penetrates the core of the roll and supports the roll, It comprises a clamping portion positioned at one end of the shaft body for gripping the pipes that constitute the scaffolding. A building material sheet roll holder characterized by the following features.

2. The protruding portion, which extends radially outward from the shaft, is detachably attached to the shaft at a position facing the clamping portion with the roll in between. The building material sheet roll holder according to feature 1.

3. A method for embedding building material sheets in mortar applied to a wall surface, The building material sheet roll holder according to claim 1 or 2 includes the step of holding a roll on which the sheet-like building material is wound, The process of clamping the clamping portion of the building material sheet roll holder onto a pipe constituting the scaffolding so that the shaft of the building material sheet roll holder is parallel to the wall surface, A step of pulling out the sheet-like building material from the roll held by the building material sheet roll holder, The process includes the steps of: attaching the pulled-out sheet-like building material to the surface of the mortar, and then embedding it in the mortar. A method for embedding building material sheets, characterized by the features described above.

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