JP2019203307A - Handrail corner member, handrail for safety belt and safety device - Google Patents

Abstract

To be able to erect vertical members at the corners of the outer frame of the scaffold, so that workers wearing safety belts who move along the handrail can move freely at the corners of the scaffold without using specially shaped scaffolding plates.SOLUTION: The handrail corner member 1 comprises a curved pipe 2 having straight portions 2b, 2c to which ends of the straight pipe 20 are connected in the axial direction of the straight pipe 20 and curved portions 2a connected to the straight portions 2b, 2c, and a first mounting fixing portion 3 and a second mounting fixing portion 4 for supporting the curved pipe 2 and fixing the curved pipe 2 to a support column 10 at the corner of the scaffold. The first mounting fixing portion 3 and the second mounting fixing portion 4 comprise pipe support plates 3a and 4a for supporting the upper part of the curved pipe 2.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a handrail corner member that forms a corner portion of a handrail to which a safety belt fitting engaged with a safety belt is movably attached in a scaffold or the like, and a safety belt handrail to which a safety belt attachment is movably attached The present invention relates to a safety device including a safety belt, a safety belt attachment, and a handrail.

Various scaffolds are used in construction work, and the scaffolds are configured by combining vertical columns (buildings) and various horizontal materials, scaffolding boards, stairs, and the like.
Workers work while moving the scaffolding plate, but handrails are provided in the middle and upper layers, so that workers wear safety belts so that they do not fall to the ground even if they step on the scaffolding plate, etc. The safety of workers is ensured.
In this case, in order to allow an operator wearing a safety belt to move freely, a safety device has been proposed in which one end of a rope portion of the safety belt is movably attached to a handrail made of a pipe.
For example, Patent Document 1 (Japanese Patent No. 5935111) discloses a scaffold safety band attachment used to attach a safety band to a scaffold, and is attached to the end of the scaffold pipe coaxially with the scaffold pipe. A tubular member, a mounting member provided on the tubular member and attached to a member constituting the scaffold, and a movable member along the axial direction of the tubular member. A locking portion that can be stopped, and an engaging portion that is opposed to the tubular portion with a gap when the locking portion is locked to the tubular portion, and that can be engaged with the safety belt. The present applicant has disclosed a safety band attachment for a scaffold having a bracket that is detachably suspended from the tubular portion.
In Patent Document 1, a mounting plate portion of a mounting member is attached to a building (post), a pipe for a scaffolding serving as a handrail is connected to a tubular portion, and is detachably suspended from the tubular portion, and a hook of a safety belt is attached. The engaged metal fittings can move along the handrail, and the worker wearing the safety belt can move freely between the building sites (posts).
However, since only the handrail installed in the same direction can be connected to the tubular portion of Patent Document 1, it is erected at a corner (corner) of a scaffold and attached to a building (post) attached so that the handrail is orthogonal. Is unable to attach the tubular part of Patent Document 1, and the safety band attachment for scaffolding of Patent Document 1 has a problem that an operator wearing the safety band cannot move the corner part of the scaffold freely. .

On the other hand, regarding the shape of the handrail and the like of the corner portion (corner portion) of the scaffold, Patent Document 2 (Japanese Patent Laid-Open No. 9-292706) discloses a simple and reliable way to ensure the safety of the corner portion of the temporary handrail. For the purpose (problem) of providing a joining material that can be attached and is easy to store, straight portions are formed at both ends of the steel pipe bent in an arc along the corner portion, and the center of the steel pipe is formed at these straight portions. The joint material of the corner part for temporary handrails which each formed the latching piece which protrudes toward is opposingly disclosed.
Further, Patent Document 3 (Japanese Patent Laid-Open No. 11-247433) provides an arcuate corner connecting member for a scaffold that is excellent in aesthetic appearance, without the tip portion of a handrail material or cloth material protruding from the corner portion. The arc-shaped corner connecting member for the scaffold, which is generally arc-shaped, has both ends positioned in two directions substantially orthogonal to each other, and is a connecting portion, and the cross-sectional shape is substantially the same over the entire length. An arcuate corner connecting member for a scaffold is disclosed.
However, in Patent Document 2, horizontal members A and E are fixed to arcuate steel pipes serving as bonding materials for temporary handrail corners via single pipe joints B and D, and these horizontal members A and E are columns or the like. (See FIG. 4 of Cited Reference 2), the vertical members (posts and the like) are located at the positions where the extended lines of the horizontal members A and E intersect, that is, at the corners of the outer frame forming the scaffold. It will not exist.
The vertical members (posts, etc.) standing at the corners (corner portions) of the outer frame of the scaffold serve as a reference for arranging a large number of vertical members when assembling the scaffold, and attach diagonal materials such as braces. It is necessary when installing a horizontal member for installing the scaffolding board.
In particular, a wedge-bound scaffold (hereinafter simply referred to as a “wedge-type scaffold”) that is widely used as a scaffold that can be easily reassembled and reassembled and can easily accommodate the shape of the building is referred to as the outer frame of the scaffold. Vertical members (posts and the like) standing at the corners are indispensable.
Therefore, in the scaffold using the joint material of the corner part for temporary handrails disclosed in Patent Document 2, the vertical member is not erected at the corner of the outer frame of the scaffold, and the vertical member is arranged at the corner of the scaffold, the diagonal of the bracing, etc. There is a problem that it interferes with the mounting of the material and the mounting of the horizontal material for installing the field board.
Moreover, in patent document 3, while the both ends of the arcuate corner connection member for scaffolds are fixed to a building material by the coupling member for building materials, this both ends become a connection part and it becomes a handrail material via a joint. In the scaffolds that are connected (see FIGS. 4, 5, and 9 in the cited document) and use the arcuate corner connection member for the scaffold, the building material (vertical member) is not erected at the corner of the outer frame of the scaffold, Similar to Patent Document 2, there is a problem in that the arrangement of building materials (vertical members) when assembling the scaffold, the attachment of diagonal materials such as braces, the attachment of horizontal materials for installing the scaffolding plate, etc. are hindered. .
Furthermore, in the scaffold using the arcuate corner connecting member for scaffold of Patent Document 3, it is necessary to use a specially shaped scaffold board called a fan-shaped scaffold cloth board at the corner, and only a normal rectangular scaffold cloth board is used. However, there is a problem that a scaffold board cannot be formed.

Japanese Patent No. 5935111 Japanese Patent Laid-Open No. 9-291706 Japanese Patent Laid-Open No. 11-247433

  The problem to be solved by the present invention is that a vertical member can be erected at the corner of the outer frame of the scaffold, and a safety belt that moves along the handrail can be worn without using a specially shaped scaffolding plate. It is to allow the worn worker to move freely around the corner of the scaffold.

  According to the first aspect of the present invention, a handrail corner that forms a corner portion of a handrail for a safety belt to which a safety belt mounting tool having an engagement portion that engages a ring-shaped frame having a gap and a safety belt is movably attached A tubular portion having a linear portion in which an end portion of a handrail member forming a non-corner portion continuous with the corner portion is connected in an axial direction of the handrail member and a curved portion continuous with the straight portion; An attachment fixing portion that supports the tubular portion and attaches and fixes the tubular portion to a vertical member at a corner of a scaffold, and the attachment fixing portion has a width smaller than the gap portion and is an upper portion of the tubular portion. The handrail corner member provided with the tubular part support part which supports this is provided, and the said subject is solved.

  According to a second aspect of the present invention, the vertical member is a vertical member provided with a pocket fitting used for a wedge-type scaffold, and the attachment fixing portion has a wedge portion inserted into the pocket fitting. A member is provided to solve the above problems.

  According to a third aspect of the present invention, the vertical member includes a first pocket fitting and a second pocket fitting provided in a direction orthogonal to the first pocket fitting, and the mounting fixing portion is a pocket of the first pocket fitting. Provided is a handrail corner member comprising a first mounting and fixing portion having a first wedge portion fitted into the portion, and a second mounting and fixing portion having a second wedge portion fitted into the pocket portion of the second pocket metal fitting. Thus, the above problems are solved.

  According to a fourth aspect of the present invention, the tubular portion is provided with a convex strip portion that prevents the safety band fixture from rotating in the circumferential direction of the tubular portion, and the convex strip portion is formed from the gap portion. A handrail corner member having a small width is provided to solve the above problems.

  According to a fifth aspect of the present invention, there is provided a safety band handrail to which a safety band mounting tool provided with an engagement portion that engages a ring-shaped frame having a gap and a safety band is movably mounted. The handrail includes a corner portion and a non-corner portion continuous to the corner portion, and the handrail corner member forming the corner portion is connected to an end portion of the handrail member forming the non-corner portion in an axial direction of the handrail member. A mounting portion for supporting the tubular portion and attaching and fixing the tubular portion to a vertical member at a corner portion of the scaffold, and fixing the mounting portion. The part provides a safety band handrail having a smaller width than the gap part and provided with a tubular part support part that supports the upper part of the tubular part, and solves the above problems.

  According to a sixth aspect of the present invention, there is provided a safety band, a safety band attachment provided with a ring-shaped frame having a gap portion, and an engagement portion with which the safety band engages, and the safety band attachment is movably attached. A safety device including a handrail for a safety belt, wherein the handrail for safety equipment includes a corner portion and a non-corner portion continuous to the corner portion, and the handrail corner member forming the corner portion includes the non-corner portion. An end portion of the handrail member to be formed is a straight portion connected in the axial direction of the handrail member, a tubular portion having a curved portion continuous to the straight portion, the tubular portion is supported, and the tubular portion is a corner portion of the scaffold There is provided a safety device including an attachment fixing portion that is attached to and fixed to a vertical member, and the attachment fixing portion includes a tubular portion support portion that has a smaller width than the gap portion and supports the upper portion of the tubular portion. Thus, the above problems are solved.

  According to a seventh aspect of the present invention, the ring-shaped frame is a C-shaped frame, and the safety band attachment includes a pair of cylindrical rotating bodies attached to end portions of the frame. To solve the above problems.

  In the handrail corner member according to the first aspect of the present invention, a vertical member can be erected at the corner of the outer frame of the scaffold, and it is safe to move along the handrail without using a specially shaped scaffold plate. There is an effect that the worker wearing the belt can freely move the corner of the scaffold.

  In the handrail corner member of the invention according to claim 2, a vertical member can be erected at the corner of the outer frame of the wedge type scaffold, and it moves along the handrail without using a specially shaped scaffold plate. An operator wearing a safety belt can freely move around the corners of the wedge-type scaffolding. There is an effect.

  In the handrail corner member of the invention according to the third aspect, there is an effect that the handrail corner member is further firmly attached to the vertical member erected at the corner of the outer frame of the wedge-type scaffold.

  In the handrail corner member of the invention according to the fourth aspect, there is an effect that the safety band attaching tool for moving the handrail corner member is not largely inclined.

  In the handrail for the safety belt according to the fifth aspect of the invention, the vertical member can be erected at the corner of the outer frame of the scaffold, and moves along the handrail without using a specially shaped scaffolding plate. There is an effect that the worker wearing the safety belt can freely move the corner of the scaffold.

  In the safety device according to the sixth aspect of the present invention, a vertical member can be erected at the corner of the outer frame of the scaffold, and the safety belt moves along the handrail without using a specially shaped scaffolding plate. There is an effect that the worker wearing the can move the corner of the scaffold freely.

  In the safety device according to the seventh aspect of the present invention, there is an effect that the safety belt mounting tool smoothly moves without resistance along the safety belt handrail.

It is a perspective view of the handrail corner member of the present invention. It is a top view of the handrail corner member shown in FIG. It is a front view of the handrail corner member shown in FIG. It is a left view of the handrail corner member shown in FIG. It is the perspective view and top view of a support | pillar used for the corner part of a wedge type scaffold. FIG. 2 is a perspective view of a state in which a handrail corner member 1 is attached to a column 10. FIG. 3 is a plan view of a state in which the handrail corner member 1 is attached to the support column 10. It is a perspective view of the linear pipe used as the handrail member which forms the non-corner part of the handrail for safety belts. 4 is a perspective view of a connecting pipe that connects the curved pipe 2 and the straight pipe 20 of the sliding corner member 1. FIG. FIG. 3 is a longitudinal sectional view in the axial direction of a pipe in a state where the curved pipe 2 and the straight pipe 20 are connected by a connecting pipe 22. It is a perspective view of the connection attachment fixing member which connects the linear pipes 20 in the non-corner part of the safety belt handrail, and attaches and fixes the connected linear pipes 20 to a vertical member (post). It is a perspective view showing a part of handrail for safety belts in a wedge type scaffold. It is a top view of the handrail for safety belts of FIG. It is a front view of the state which attached the safety belt attachment tool to the linear part 2b of the curved pipe 2 of the sliding corner member 1. FIG. It is a top view of the safety belt attachment tool shown in FIG. It is a left view of the safety belt attachment tool shown in FIG. It is XX sectional drawing of FIG. It is explanatory drawing for demonstrating the magnitude relationship etc. of the dimension of each part of the handrail corner member 1 and the safety belt attachment tool 31. FIG. 13 is a front view of a state in which a safety belt attachment tool 31 is attached to the safety belt handrail shown in FIG. 12 and a safety belt worn by an operator is engaged with the safety belt attachment device 31. 3 is a front view of a hook portion 44 of a safety belt 40. FIG.

[Handrail corner members]
1 is a perspective view of the handrail corner member of the present invention, FIG. 2 is a plan view of the handrail corner member shown in FIG. 1, FIG. 3 is a front view of the handrail corner member shown in FIG. 1, and FIG. It is a left view of the handrail corner member shown in FIG.
In the figure, 1 is a handrail corner member, 2 is a curved pipe, 2a is a curved portion, 2b and 2c are straight portions, 2d and 2e are round holes, 3 is a first mounting fixing portion, 4 is a second mounting fixing portion, 3a 4a is a pipe support plate, 3b and 4b are frames, 3c and 4c are arms, 3d is a first wedge portion, 4d is a second wedge portion, 5a is a curved ridge portion, and 5b and 5c are linear ridge portions. is there.
As shown in the drawing, the handrail corner member 1 includes a curved pipe 2, a first attachment fixing portion 3, a second attachment fixing portion 4, and the like.
The bending pipe 2 is a tubular portion of the present invention, and includes a bending portion 2a and straight portions 2b and 2c continuous to the bending portion 2a.
The first mounting and fixing portion 3 includes a pipe support plate 3a, a box-shaped frame 3b joined to the pipe support plate 3a by welding, an arm 3c having one end joined to the frame 3b by welding, The first wedge portion 3d is joined to the other end of 3c by welding or the like.
The second mounting / fixing portion 4 is composed of a pipe support plate 4a, a box-shaped frame 4b, an arm 4c, and a second wedge portion 4d in the same manner as the first mounting / fixing portion 3, but the pipe support plate 4a. The dimensions of the box-shaped frame 4b and the arm 4c are slightly different from the dimensions of the pipe support plate 3a, the box-shaped frame 3b, and the arm 3c of the first mounting and fixing portion 3.
The pipe support plate 3a serves as the tubular portion support portion of the present invention, and the lower surface thereof is located on the side of the curved portion 2a of the straight portion 2b or on the side of the straight portion 2b near the boundary between the straight portion 2b and the curved portion 2a. In position, it is joined to the uppermost part of the curved pipe 2 by welding or the like.
The pipe support plate 4a is also a tubular portion support portion of the present invention, and its lower surface is located on the curved portion 2a side of the straight portion 2c or on the straight portion 2c side near the boundary between the straight portion 2c and the curved portion 2a. In position, it is joined to the uppermost part of the curved pipe 2 by welding or the like.
Moreover, in the uppermost part of the curved pipe 2, the straight line 2b is provided with a straight ridge 5b, the curved part 2a is provided with a curved ridge 5a, and the straight part 2c is provided with a straight ridge 5c. The curved ridges 5a and the straight ridges 5b and 5c are provided as the ridges of the present invention.
Furthermore, a round hole 2d that penetrates the curved pipe 2 in the vertical direction is provided between the pipe support plate 3a and the straight convex portion 5b, and a curved pipe is provided between the pipe support plate 4a and the straight convex portion 5c. A round hole 2e penetrating 2 in the vertical direction is provided.
The handrail corner member 1 forms a corner portion of the handrail for the safety belt of the present invention, and is attached to a vertical member (described later) standing on the corner portion (corner portion) of the wedge-type scaffold, A safety belt mounting tool (to be described later) having an engagement portion that engages with a ring-shaped frame having a gap and a safety belt is movably attached to the handrail.
In this case, each of the pipe support plates 3a, 4b, the curved ridges 5a, and the straight ridges 5b, 5c has a width smaller than the gap portion of the frame of the safety band mounting tool, and moves the safety band handrail. The safety belt fixture can move the portions where the pipe support plates 3a, 4b, the curved ridges 5a, and the straight ridges 5b, 5c are provided.
Further, the curved ridges 5a and the straight ridges 5b and 5c are arranged so that the safety band attaching tool that moves on the curved pipe 2 of the handrail corner member 1 rotates in the circumferential direction of the curved pipe 2 and is greatly inclined. Acts as a detent to prevent.

[Vertical members]
Next, the vertical member to which the handrail corner member of the present invention is attached will be described.
FIG. 5 is a view showing a support used at the corner of the wedge-type scaffold. FIG. 5A is a perspective view and FIG. 5B is a plan view. In FIG. A vertical pipe, 12 (12a-12d) is a pocket metal fitting, and 13 (13a-13d) is a pocket part.
The column 10 is a vertical member in the present invention, and includes a vertical pipe 11 and pocket fittings 12 (12a to 12d) as shown in FIG. 5, and the vertical pipe 11 is a jack base (not shown). Installed on the ground.
The pocket fitting 12 has a U-shaped horizontal cross section, and the four pocket fittings 12 are arranged at intervals of 90 degrees with steps in the circumferential direction of the vertical pipe 11, that is, sandwiching the vertical pipe 11. The facing pocket fittings 12 a and 12 c are arranged at the same height position, the pocket fittings 12 b and 12 d are arranged at a position lowered by the height of the pocket fitting 12, and these four pocket fittings 12 are connected to the vertical pipe 11. It is joined to the circumferential surface.
Of these four pocket fittings 12, the pocket fitting 12a is the first pocket fitting of the present invention, the pocket fitting 12b is the second pocket fitting of the present invention, and the pocket fitting 12b is perpendicular to the pocket fitting 12a. Is provided.
These four pocket fittings 12 are provided at regular intervals in the vertical direction of the vertical pipe 11.
And the pocket part 13 (13a-13d) is formed between each pocket metal fitting 12 (12a-12d) and the circumferential surface of the vertical pipe 11, and a wedge-type scaffolding is formed in this pocket part 13 (13a-13d). The wedge part of various horizontal materials, such as a handrail used for, is inserted.

FIG. 6 is a perspective view of a state in which the handrail corner member 1 is attached to the support column 10, and FIG. 7 is a plan view of a state in which the handrail corner member 1 is attached to the support column 10.
As shown in the drawing, the first wedge portion 3d of the first attachment fixing portion 3 is fitted into the pocket portion 13a of the pocket metal fitting 12a (first pocket metal fitting) of the vertical pipe 11, and the second attachment fixing portion 4 second. The wedge portion 4d is fitted into the pocket portion 13b of the pocket fitting 12b (second pocket fitting) of the vertical pipe 11.
Thereby, the handrail corner member 1 is attached to the support | pillar 10 in the corner part of a wedge type scaffold.
The handrail corner member of the present invention is not limited to the one attached to the support (vertical member) of the wedge-type scaffold, and the corner in the scaffold using the single tube pipe support (vertical member) provided with no pocket metal fittings. It may be attached to the support column.

[Handrail for safety belt]
Next, the safety band handrail of the present invention will be described.
The safety belt handrail has a corner portion and a non-corner portion continuous to the corner portion, and the handrail corner member 1 forms the corner portion of the safety belt handrail as described above.
FIG. 8 is a perspective view of a straight pipe serving as a handrail member that forms a non-corner portion of the handrail for a safety belt, wherein 20 is a straight pipe, 20a is a long hole, 20b is a round hole, 21a, 21b Is a straight ridge.
As shown in FIG. 8, in the uppermost part of the straight pipe 20, an elongated hole 20 a that penetrates the straight pipe 20 in the vertical direction in order from one end side, and a long straight protrusion extending near the entire length of the straight pipe 20. A strip 21a, a round hole 20b penetrating the straight pipe 20 in the vertical direction, and a short straight convex portion 21b are provided.
In this case, the straight ridges 21a and 21b have a smaller width than the gap portion of the frame of the safety belt attachment, and the safety belt attachment that moves the handrail for the safety belt is the straight ridge of the straight pipe 20. The part provided with 21a, 21b can be moved.
The straight ridges 21 a and 21 b function as a detent that prevents the safety band fixture that moves on the straight pipe 20 from rotating and tilting greatly in the circumferential direction of the straight pipe 20.
FIG. 9 is a perspective view of a connecting pipe that connects the curved pipe 2 and the straight pipe 20 of the handrail corner member 1, in which 22 is a connecting pipe, and 22 a and 22 b are round holes.
As shown in FIG. 9, round holes 22 a and 22 b that penetrate the connection pipe 22 are provided in the vicinity of both ends of the connection pipe 22.

FIG. 10 is a longitudinal sectional view in the axial direction of a pipe in a state in which the curved pipe 2 and the straight pipe 20 are connected by the connecting pipe 22, and FIG. 10A shows the connecting pipe 22 with the curved pipe 2 and the straight pipe. 20 shows a state in which the curved pipe 2 and the straight pipe 20 are fixed to the connecting pipe 22. In FIG. 26, 26 is a countersunk bolt, and 27 is a nut. .
As shown in FIG. 10A, one side of the connecting pipe 22 is fitted inside the straight portion 2b (2c) of the curved pipe 2, and the round hole 2d (2e) of the straight portion 2b (2c) and the connecting pipe 22 The position of the round hole 22a is adjusted.
Further, the other side of the connecting pipe 22 is fitted into the inner side of the straight pipe 20 where the long hole 20a is provided, and the long hole 20a of the straight pipe 20 and the round hole 22b of the connecting pipe 22 are aligned.
Then, as shown in FIG. 10B, a flat bolt 26 is passed through the round hole 2d (2e) and the round hole 22a, and a nut 27 is screwed into the flat bolt 26 to fix the curved pipe 2 and the connecting pipe 22 together. Is done.
Further, a countersunk bolt 26 is passed through the long hole 20a and the round hole 22b, and a nut 27 is screwed onto the countersunk bolt 26 to fix the straight pipe 20 and the connecting pipe 22.
In this way, the curved pipe 2 and the straight pipe 20 of the handrail corner member 1 are connected by the connecting pipe 22.

FIG. 11 is a perspective view of a connecting / fixing fixing member that connects the straight pipes 20 to each other and attaches and fixes the connected straight pipes 20 to vertical members (posts) in the non-corner portion of the safety belt handrail. .
In the figure, 23 is a connecting and fixing member, 24 is a connecting part, 24a is a central pipe part, 24b and 24c are fitting pipe parts, 24d and 24e are round holes, 24k is a notch part, 25 is an attaching and fixing part, and 25a is a fixing part. A pipe support plate, 25b is a window hole, 25c is an arm, 25d is a wedge portion, and HS is a narrow portion.
As shown in FIG. 11, the connecting and fixing member 23 includes a connecting portion 24 and an attaching and fixing portion 25.
The connecting portion 24 includes a central pipe portion 24a and fitting pipe portions 24b and 24c. The fitting pipe portions 24b and 24c are inserted into both ends of the central pipe portion 24a and joined by welding or the like.
The central pipe portion 24a is formed with a notch 24k from which the central lower portion of the pipe is largely removed, and the fitting pipe portions 24b and 24c are provided with round holes 24d and 24e penetrating the fitting pipe portions 24b and 24c. ing.
The attachment fixing portion 25 includes a pipe support plate 25a, an arm 25c having one end joined to the pipe support plate 25a by welding or the like, and a wedge portion 25d joined to the other end of the arm 3c by welding or the like.
A window hole 25b is provided in the pipe support plate 25a, and the lower surface thereof is joined to the uppermost part of the central pipe part 24a by welding or the like over almost the entire length.
In this case, the pipe support plate 25a has a width smaller than the gap portion of the frame of the safety belt attachment, and the safety belt attachment that moves the safety belt handrail can move the portion of the central pipe portion 24a. ing.
Further, the notch portion 24k and the window hole 25b form a narrow portion HS having a narrow width in the connection mounting fixing member 23, and the narrow portion HS includes a ring-shaped frame having a gap portion. The safety band attachment and the connecting attachment fixing member 23 can be attached and detached.
In addition, the connection mounting fixing member is not limited to the one attached to the support (vertical member) of the wedge-type scaffold, but is attached to the support of the scaffold using a single pipe pipe support (vertical member) that is not provided with pocket fittings. May be used.

FIG. 12 is a perspective view showing a part of the handrail for the safety belt in the wedge type scaffolding, FIG. 13 is a plan view of the handrail for the safety belt in FIG. 12, in which 14 is a support and 15 is a vertical. A pipe, 16a is a pocket metal fitting.
As shown in the figure, the handrail corner member 1 is attached to the support column 10 standing at the corner of the wedge-type scaffolding, and the connection fixing member 23 is attached to the support column 14 standing next to the support column 10. ing.
That is, in the handrail corner member 1, the first wedge portion 3 d of the first mounting fixing portion 3 is fitted into the pocket portion of the pocket metal fitting 12 a of the column 10, and the second wedge portion 4 d of the second mounting fixing portion 4 is 10 of the pocket metal fittings 12b, and in the connecting and fixing member 23, of the pocket metal fittings provided on the peripheral surface of the vertical pipe 15 of the support column 14, the pockets of the pocket metal fittings 16b are connected to the pockets of the mounting and fixing parts 25. A wedge portion 25d is fitted.
Further, one end of the curved pipe 2 and the straight pipe 20 of the handrail corner member 1 are connected by a connecting pipe 22 and fixed by a countersunk bolt 25 (see FIG. 10).
Further, the other end of the straight pipe 20 is fitted into the fitting pipe portion 24 b of the connection mounting fixing member 23 and fixed with the countersunk bolt 26, and the connecting portion 24 of the straight pipe 20 and the connection mounting fixing member 23 is connected. Yes.
In this case, the fixing method of the other end of the straight pipe 20 and the fitting pipe portion 24b by the countersunk bolt 26 is the same as the fixing method of the straight portion 2b of the bending pipe 2 and the connecting pipe 22 shown in FIG.
Although not shown in the drawing, one end of the straight pipe 20 is connected to the straight portion 2b of the curved pipe 2 of the handrail corner member 1 by the connecting pipe 22, and the connecting portion 24 of the connecting attachment fixing member 23 is fitted. One end of the straight pipe 20 is fitted and connected to the pipe portion 24c.
As described above, in the wedge-type scaffolding, the handrail corner member 1 is attached to the pillars erected at the corners, and the connection attachment fixing member 23 is attached to the pillars erected at positions other than the corners. A straight pipe 20 is connected to each of the corner member 1 and the connection mounting fixing member 23, the curved pipe 2 and the straight pipe 20 are connected, and a continuous safety belt handrail is formed in which the straight pipes 20 are connected to each other. .
The handrail corner member and the connecting and fixing member are not limited to those attached to the support (vertical member) of the wedge-type scaffold, but are attached to the support (vertical member) of a single pipe without a pocket metal fitting. Therefore, the handrail for the safety belt of the present invention is not limited to the one used for the wedge type scaffold, but is used for the scaffold in which the support (vertical member) of the single pipe is erected. There may be.

[Safety belt attachment]
Next, the safety belt mounting tool attached to the safety belt handrail of the present invention will be described.
14 is a front view of a state in which a safety band attachment is attached to the straight portion 2b of the curved pipe 2 of the handrail corner member 1, FIG. 15 is a plan view of the safety band attachment shown in FIG. 14, and FIG. FIG. 17 is a cross-sectional view taken along line XX in FIG. 15.
In the figure, 31 is a safety band fixture, 32 is a frame, 32a (32a1, 32a2) is a frame body, 32b (32b1, 32b2) is an end, 32c is an engaging part, 32d is a hole, 33 (33a, 33b) Is a ball bearing and 34 (34a, 34b) is a split pin.
As shown in the figure, the safety band attachment 31 has a structure including a C-shaped frame 32 that is a ring-shaped frame, a pair of ball bearings 33 (33a, 33b), and a split pin 34 (34a, 34b). ing.
The frame 32 includes a frame main body 32a (32a1, 32a2) having a circular cross section, end portions 32b (32b1, 32b2), and a ring-shaped engagement portion 32c at a position facing the end portion 32b, and the engagement portion 32c. A hole 32d is formed in the.
The frame 32 is an integral body in which a metal casting such as iron is galvanized or the like. The frame body 32a is a metal rod, and the metal rod is bent and welded to a metal engaging portion 32c. It is good also as what is joined by the frame 32 as the flame | frame.
The C-shape of the frame 32 is not limited to an arc shape as shown in the figure, and one vertex of a polygon such as a pentagon, hexagon, or octagon may be separated.
The engaging portion 32c is not limited to a ring shape as shown in the figure, and may be a U-shape having an open upper side.
The ball bearing 33 is a cylindrical rotating body according to the present invention. One ball bearing 33a is fitted into the end 32b1 of the frame main body 32a1, and the other ball bearing 33b is fitted to the end 32b2 of the frame main body 32a1. It is inset. In this case, the outer diameter of the end portion 32b is slightly smaller than the outer diameter of the frame main body 32a, the end portion 32b becomes a stepped portion, and the ball bearing 33 is prevented from moving toward the frame main body 32a.
The cylindrical rotating body of the present invention is not limited to the ball bearing 33 but may be a roller bearing, a sleeve bearing, or the like.
The split pin 34 prevents the ball bearing 33 from falling off, and one split pin 34a is inserted into a pin hole provided at the tip of the end portion 32b1, and the other split pin 34b is connected to the end 32b2. It is inserted into a pin hole provided at the tip.

FIG. 18 is an explanatory diagram for explaining the size relationship between the dimensions of each part of the handrail corner member 1 and the safety band attachment 31, and FIG. 18A shows the dimensions of the handrail corner member 1 side. (B) represents the dimensions of the safety band fixture 31.
In the figure, GA is the gap between the frames 32, the rotation axis of the ball bearings 33 of A1 and A2, d is the distance between the ball bearings 33a and 33b, d1 is the distance between the lower ends of both bearings, and d2 is the upper end of both bearings. The distance, D1 is the inner diameter of the frame 32, D2 is the outer diameter of the curved pipe 2 (straight portion 2b), t1 is the width of the pipe support plate 3a, and t2 is the width of the straight ridge 5b.
In the safety band attachment 31, the left and right end portions of the frame 32 are separated from each other, and a gap portion GA is formed.
The gap GA refers to a narrower one of a space (gap) between both ends of the frame 32 and a space (gap) between the ball bearing 33a and the ball bearing 33b, but in the present embodiment, Since the widths of both the spaces are substantially the same, the size (width) of the gap GA is the minimum value of the distance between the ball bearing 33a and the ball bearing 33b.
As shown in FIG. 18, the inner diameter D1 of the frame 32 is larger than the outer diameter D2 of the curved pipe 2 (linear portion 2b), the ball bearing 33a and the ball bearing 33b face each other, and the minimum value of the distance d between the bearings D1, i.e., the size (width) of the gap GA is larger than the width t1 of the pipe support plate 3a and the width t2 of the straight ridge 5b, and both bearings have a width t1 of the pipe support plate 3a and a straight line. The protrusions 5b are separated by a width t2 or more.
The rotation axis A1 of the ball bearing 33a and the rotation axis A2 of the ball bearing 33b intersect, and the distance d1 between the lower ends of both bearings is smaller than the distance d2 between the upper ends. ) To the outside (upper side).
The minimum value d1 of the interval d that is the size (width) of the gap GA is smaller than the outer diameter D2 of the curved pipe 2 (straight portion 2b), and the interval d is the outer diameter D2 of the curved pipe 2 (linear portion 2b). It is getting smaller.
In the handrail corner member 1, the widths of the pipe support plate 3 a and the pipe support plate 3 a are the same, and the widths of the curved ridge portions 5 a and the straight ridge portions 5 b and 5 c are the same.
Further, in the non-corner portion of the safety handrail, the width of the straight ridges 21 a and 21 b provided on the straight pipe 20 and the width of the pipe support plate 25 a of the connection mounting fixing member 23 are the gap portions of the safety belt mounting tool 31. Smaller than the size (width) of GA,

As described above, when the safety belt attachment 31 is attached to the safety belt handrail, the ball bearings 33a and 33b are placed on the curved pipe 2, the straight pipe 20, and the central pipe portion 24a of the connection mounting fixing member 23 of the handrail corner member 1. Rolling and the safety band fixture 31 may collide with the pipe support plates 3a, 4a, the pipe support plate 25a, the curved ridges 5a, the straight ridges 5b, 5c and the straight ridges 21a, 21b. In addition, the curved pipe 2, the straight pipe 20, and the central pipe portion 24a can be smoothly moved without resistance.
Further, the curved ridges 5a, the straight ridges 5b, 5c, and the straight ridges 21a, 21b are rotation stoppers that prevent the frame 32 of the safety band fixture 31 from rotating in the circumferential direction of the curved pipe 2. The safety band attaching tool 31 can move on the curved pipe 2, the straight pipe 20, and the central pipe portion 24a without being greatly inclined.

Here, a narrow portion HS is formed in the coupling attachment fixing member 23 by the notch portion 24k and the window hole 25b, and the narrow portion HS is large so that the gap portion GA of the safety band attachment 31 can pass therethrough. (Width) is set.
Thereby, in the narrow part HS, the safety belt attachment 31 and the connection attachment fixing member 23 can be attached and detached, and the safety belt attachment 31 can be attached to the safety belt handrail or the safety belt attachment 31 can be attached from the safety belt handrail. It can be removed.

[Safety device]
Next, the safety device of the present invention will be described.
FIG. 19 is a front view of a state where the safety belt attachment 31 is attached to the safety belt handrail shown in FIG. 12 and the safety belt worn by the operator is engaged with the safety belt attachment 31. , 40 is a safety belt, 41 is a belt, 42 is a belt metal fitting, 43 is a rope, 44 is a hook part, 50 is a scaffold plate, and WO is an operator.
As shown in FIG. 19, the safety belt 40 includes a belt 41, a belt fitting 42, a rope 43, and a hook portion 44, and one end of the belt 41 and the rope 43 wound around the trunk of the operator WO is attached to the belt fitting 42. The other end of the rope 43 is attached to the hook portion 24.
FIG. 20 is a front view of the hook portion 44 of the safety belt 40, in which 44a is a hook portion body, 44b is a closing fitting, and 44c is a rope attachment fitting.
In the hook portion 44, a closing fitting 44b is rotatably attached to the lower portion of the hook portion main body 44a, and a rope attachment fitting 44c is attached to a hole provided in the lower portion of the hook portion main body 44a.
The front end of the closing metal fitting 44b is closed to the front end of the hook part main body 44a by a spring (not shown), and the rope 43 is attached to the rope attachment metal 44c.
The scaffold board 50 is a normal-shaped scaffold board formed by attaching a step board normally used to a horizontal member (not shown) attached to the support column 10, and an operator WO is placed on the scaffold board 50. Moving.
As shown in FIG. 19, a handrail corner member 1 is attached to a column 10 erected at a corner of a wedge-type scaffold, and the curved pipe 2 (straight portion 2 c) and one end of the straight pipe 20 of the handrail corner member 1 are attached. Are connected to form a part of the handrail for the safety belt.
And the safety band attachment 31 is attached to the straight part 2c of the curved pipe 2, and the hook part 44 of the safety band 40 is hooked on the engaging part 32c of the safety band attachment 31, thereby the safety band 40, The safety device of the present invention including the safety belt attachment 31 and the safety belt handrail is configured.

In the safety device of the present invention, when the worker WO wearing the safety belt 40 moves, the safety belt attachment tool 31 is pulled in the direction in which the worker WO moves following this, and the handrail corner member 1 is moved. The ball bearings 33a and 33b roll on the curved pipe 2 and the straight pipe 20, and the safety band fixture 31 moves.
And even if the safety belt fixture 31 moves, the curved ridges 5a, the straight ridges 5b, 5c, and the straight ridges 21a, 21b do not collide with the pipe support plates 3a, 4a, etc. Therefore, the safety band fixture 31 does not tilt in the circumferential direction of the pipe.
Therefore, the worker WO wearing the safety belt 40 can freely move on the scaffold plate 50 having a normal shape including the corners of the scaffold without resistance.

  The handrail corner member, the safety band handrail and the safety device of the present invention can stand a vertical member at the corner of the outer frame of the scaffold and move along the handrail without using a specially shaped scaffolding plate. An operator wearing a safety belt can freely move in the corners of the scaffolding and can be used for those using safety belts such as various scaffolds.

DESCRIPTION OF SYMBOLS 1 Handrail corner member 2 Curved pipe 2a Curved part 2b, 2c Straight line part 2d, 2e Round hole 3 First attachment fixing part 4 Second attachment fixation part 3a, 4a Pipe support plate 3b, 4b Frame body 3c, 4c Arm 3d First Wedge 4d Second wedge 5a Curved ridge 5b, 5c Straight ridge 10 Strut 11 Vertical pipes 12, 12a, 12b, 12c, 12d Pocket fittings 13, 13a, 13b, 13c, 13d Pocket 14 Strut 15 Vertical Pipe 16a Pocket metal fitting 20 Straight pipe 20a Long hole 20b Round hole 21a, 21b Straight protrusion 22 Connection pipe 22a, 22b Round hole 23 Connection attachment fixing member 24 Connection part 24a Central pipe part 24b, 24c Insertion pipe part 24d, 24e Round hole 24k Notch 25 Mounting fixing part 25a Pipe support plate 25b Window hole 25c Arm 25d Portion 26 countersunk bolt 27 nut 31 safety band fixture 32 frame 32a, 32a1, 32a2 frame body 32b, 32b1, 32b2 end 32c engagement portion 32d hole 33, 33a, 33b ball bearing 34, 34a, 34b split pin 40 safety Belt 41 Belt 42 Belt bracket 43 Rope 44 Hook part 50 Scaffold plates A1, A2 Rotating shaft GA of ball bearing 33 Gap part HS of frame 32 Narrow part WO Worker

Claims (7)

A handrail corner member that forms a corner portion of a handrail for a safety belt to which a safety belt attachment provided with a ring-shaped frame having a gap and an engagement portion with which the safety belt is engaged is movably attached,
A tubular portion having an end portion of a handrail member that forms a non-corner portion continuous with the corner portion and a curved portion that is continuous with the straight portion, and a straight portion connected in the axial direction of the handrail member;
An attachment fixing portion that supports the tubular portion and attaches and fixes the tubular portion to a vertical member at a corner of a scaffold;
The handrail corner member, wherein the attachment fixing portion includes a tubular portion support portion that has a smaller width than the gap portion and supports an upper portion of the tubular portion.   The said vertical member is a vertical member provided with the pocket metal fitting used for a wedge type | formula scaffold, The said attachment fixing | fixed part is provided with the wedge part inserted in the said pocket metal fitting. Handrail corner member. The vertical member includes a first pocket fitting and a second pocket fitting provided in a direction orthogonal to the first pocket fitting,
The mounting / fixing portion includes a first mounting / fixing portion having a first wedge portion fitted in the pocket portion of the first pocket metal fitting, and a second wedge portion fitted in the pocket portion of the second pocket metal fitting. The handrail corner member according to claim 2, comprising two attachment fixing portions.   The tubular portion is provided with a ridge that prevents the safety band fixture from rotating in the circumferential direction of the tubular portion, and the ridge has a smaller width than the gap. The handrail corner member according to any one of claims 1 to 3, wherein the handrail corner member is provided. A safety band handrail to which a safety band mounting tool having an engagement portion with which a ring-shaped frame having a gap and a safety band engage is movably attached,
The safety band handrail includes a corner portion and a non-corner portion continuous to the corner portion,
The handrail corner member forming the corner portion is
A tubular portion having an end portion of the handrail member that forms the non-corner portion and a curved portion that is continuous with the straight portion, and a straight portion that is connected in the axial direction of the handrail member;
An attachment fixing portion for supporting the tubular portion and attaching and fixing the tubular portion to a vertical member at a corner of the scaffold;
The safety band handrail, wherein the attachment fixing portion includes a tubular portion support portion that has a smaller width than the gap portion and supports the upper portion of the tubular portion. A safety belt, a ring-shaped frame having a gap, a safety belt attachment provided with an engagement portion with which the safety belt is engaged, and a safety belt handrail to which the safety belt attachment is movably attached A safety device,
The handrail for safety equipment includes a corner portion and a non-corner portion continuous to the corner portion,
The handrail corner member forming the corner portion is
A tubular portion having an end portion of the handrail member that forms the non-corner portion and a curved portion that is continuous with the straight portion, and a straight portion that is connected in the axial direction of the handrail member;
An attachment fixing portion for supporting the tubular portion and attaching and fixing the tubular portion to a vertical member at a corner of the scaffold;
The safety device according to claim 1, wherein the mounting and fixing portion includes a tubular portion support portion that has a smaller width than the gap portion and supports the upper portion of the tubular portion. The ring-shaped frame is a C-shaped frame,
The safety device according to claim 7, wherein the safety belt attachment includes a pair of cylindrical rotating bodies attached to end portions of the frame.

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