JP2019203308A - Moving body fixture, safety tool, safety device, transport body fixture and lifting device - Google Patents

Abstract

To make it possible for an operator to move freely while wearing a safety tool connecting a fixture tool and a safety band by attaching a moving body such as the safety band etc. which moves along a bar-shaped member such as a handrail to the bar-shaped member with the fixture.SOLUTION: The moving body mounting tool 1 which is a moving body fixture tool 1 attaching movably a moving body which moves along a pipe 6 to the pipe 6 comprises a frame 2 having a gap GA, an engaging portion to engage the moving body to the frame for engaging the moving body to the frame 2, a pair of first ball bearings 3 attached to the frame 2 so as to be able to contact the pipe 6, and a pair of second ball bearings 4 attached to the frame 2 so as to be able to contact the pipe 6 at positions facing each other between a position where the first ball bearing 3 contacts the pipe 6 and the center of the pipe 6.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a moving body mounting tool for mounting a moving body such as a safety belt that moves along a bar-shaped member such as a pipe constituting a scaffold or the like to the bar-shaped member, a safety device using the moving body mounting tool, and a safety device. The present invention relates to a transport body mounting tool and a lifting device for mounting a transport body such as a transport rod that moves up and down along a vertical pipe to a vertical bar-shaped member such as a vertical pipe.

Various scaffolds are used in construction work, but it is also possible to attach a moving body to pipes such as handrails that make up the scaffolding and vertical pipes attached to columns, and to move this moving body along the pipe. These include safety belts and haulers that carry materials. Among these moving objects, safety belts are important for the safety of workers. Workers who work on scaffolds should wear safety belts so that they will not fall to the ground even if they step on scaffolding plates. ing.
In this case, one end of the rope portion of the safety belt is movably attached to a handrail made of a pipe so that an operator wearing the safety belt can move freely.
For example, Patent Document 1 (Japanese Patent Application Laid-Open No. 2008-25254) discloses an upper cross member, a lower cross member formed in a U-shape with the front facing upwardly hung on both lower portions of the upper cross member, and the lower cross member. Disclosed is a handrail composed of a pair of left and right vertical members that are joined to both sides of the material and rotatably coupled, and tapered guide portions formed at both ends of the upper cross member. A guide G for attaching a lifeline is provided on the upper cross member. Is slidably inserted.
Patent Document 2 (Japanese Patent Application Laid-Open No. 2012-193532) includes a loose attachment member that is detachably attached to a bar-shaped handrail frame portion of a handrail and has a substantially cylindrical main body portion having a gap in the longitudinal direction. The main body part is composed of a plurality of joining members, and the joining member is formed from the peripheral part on one side surface of the main body part to the other. It consists of a fitting part having a shape cut by a cut surface connected to the peripheral edge of the side surface, and a joint provided on the cut surface or / and the peripheral edge of the cut surface. By joining, it is loosely attached to the handrail frame so as to be movable, and the interval between the gaps formed by joining is smaller than the shortest length in the cross section perpendicular to the central axis direction of the handrail frame. Larger than the width of the supporting member A safety device configured as described above is disclosed, and a plurality of rotating bodies are arranged on the inner wall surface of the loosening member, and the rotating device rotates to move the safety gear through the handrail frame portion of the handrail. It is described to do.

However, the lifeline attaching guide G to be inserted into the handrail of Patent Document 1 has a cylindrical main body having a substantially rectangular cross section. The cylindrical main body includes an upper guide roller and a pair of front and rear guides on its upper wall and inner wall. A guide roller is provided, and a set of these three guide rollers is provided in three locations along the longitudinal direction of the cylindrical main body at the central portion and the left and right side portions, and a total of nine guide rollers are provided. Structure.
Since the guide roller is not provided on the inner wall on the lower side of the cylindrical main body, the guide G is pulled obliquely upward by the lifeline attached to the lifeline mounting bracket at the upper part of the cylindrical main body. The cylindrical main body is lifted and the lower inner wall comes into contact with the outer peripheral surface of the upper cross member, so that the guide G does not slide along the upper cross member (or its resistance increases even if it slides), There is a problem of hindering the movement of workers with lifelines.
Further, in the handrail of Patent Document 1, since the guide G has a cylindrical main body that is long in the left-right direction, when there is a curved portion in the upper cross member into which the guide G is inserted, the guide G is curved. There is a problem that it cannot pass through the part.
Next, the safety device of Patent Document 2 has a loose member having a substantially cylindrical main body portion obtained by joining joining members composed of a fitting body portion and a joint portion, and a plurality of inner wall surfaces of the loose member. This is a complicated structure in which the rotating body is arranged.
And since the rotary body is not arrange | positioned in the lower part of the inner wall face of the loose attachment member provided with the substantially cylindrical main-body part similarly to the guide G of patent document 1, a loose attachment member is provided by a rope-like member. Is pulled upward, the lower part of the inner wall surface of the loose member contacts the outer peripheral surface of the handrail frame portion, and the loose member does not move along the handrail frame portion (or the resistance increases even if it moves). There is a problem of hindering the movement of workers wearing safety gear.
Also, in the safety device of Patent Document 2, since the main body portion provided in the loose member is substantially cylindrical, when the handrail frame portion has a curved portion, the loose member cannot pass through the curved portion. There is a problem.

On the other hand, Patent Document 3 (Japanese Patent No. 5935111) discloses a safety band attachment for a scaffold used for attaching a safety band to a scaffold, and is attached to the tip 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. A safety band attachment for a scaffold having a metal fitting that is detachably suspended from the tubular portion is disclosed, and the metal fitting is attached to a pipe for a scaffolding that serves as a handrail with the safety belt attached to the engaging portion. It is described that it moves along.
In this patent document 3, the metal fitting is a U-shape and has a very simple structure including a locking portion and an engaging portion, and a safety belt is attached even if there is a curved portion in the pipe for scaffolding that serves as a handrail. The metal fitting can pass through the curved portion.
However, in Patent Document 3, the locking portion of the metal fitting is provided with a protrusion, and this protrusion makes point contact with the scaffolding pipe or the like. However, when the metal fitting is moved along the scaffolding pipe or the like, Since the protrusion of the stopper) and the scaffolding pipe are in sliding contact, the resistance is greater than the rolling contact, and depending on the direction in which the safety belt is pulled, the resistance when the bracket slides on the scaffolding pipe, etc. There arises a problem that a load is imposed on the worker who is pulled by the safety belt and moves.
In addition, when the metal fitting of Patent Document 3 is used for a long period of time, the protruding portion of the metal fitting is worn by contact with the scaffolding pipe or the like, and the metal locking portion and the scaffolding pipe or the like do not make point contact but make surface contact However, the resistance when the metal fitting slides on the scaffold pipe increases, and there arises a problem that the movement of the worker is hindered.

By the way, in middle- and high-rise scaffolds, in order to transport materials necessary for performing various operations to a high place, a material transportation lifting device that moves up and down along a traveling rail such as a vertical pipe by a winch or the like is used. There is.
For example, in Patent Document 4 (Japanese Patent Laid-Open No. 2015-78041), a vertical arrangement including two cylindrical tubes that are installed on a vertical pipe of a temporary scaffold via attachment means and are connected in parallel with a gap therebetween. A first traveling means that travels along the traveling rail, the first traveling means, and a plurality of guide wheels that contact the circumferential surface of the cylindrical tube of the traveling rail. The means is provided so as to be rotatable around a first vertical axis, and is connected to the first traveling means, and is moved up and down along the traveling rail. A first lifting / lowering means for rotating the second traveling means around a second vertical axis, a support member for attaching the first lifting / lowering means, and an upper portion of the traveling rail. And the support member is connected to the traveling rail. Along material handling for lifting device and a second elevating means for elevating it has been disclosed.
However, in Patent Document 4, the traveling rail is composed of two cylindrical pipes connected in parallel with a gap, and as a first traveling means, a carriage that travels along the traveling rail is 2 It is a complex structure with a frame arranged so as to surround a cylindrical tube and a total of six guide wheels attached to this frame via a rotating shaft. However, there is a problem that it takes time.

JP 2008-25254 A JP 2012-193532 A Japanese Patent No. 5935111 Japanese Patent Laying-Open No. 2015-78041

  The problem to be solved by the present invention is to attach a moving body such as a safety belt that moves along a bar-shaped member such as a handrail that constitutes a scaffold or the like to the bar-shaped member by a mounting tool, and the mounting tool to the bar-shaped member by rolling contact. Even when a force pulling upward or obliquely upward is applied to the fixture, the fixture and the rod-shaped member can move without resistance by rolling contact without causing sliding contact. Even if there is a curved part, the fixture can be moved, and it is possible to freely move the worker wearing the safety device that connects the fixture and the safety belt, and in the vertical direction It is to be able to attach a carrying body such as a carrying rod that is moved up and down along the rod-like member provided on the rod-like member without taking time and effort with an attachment having a simple structure.

  The invention of claim 1 is a moving body attachment that movably attaches a moving body that moves along a rod-like member to the rod-like member, wherein the moving body attachment includes a ring-shaped frame having a gap, An engaging portion provided on the frame, the engaging portion engaging the moving body with the frame, and a pair of cylindrical rotations attached to the frame so as to be able to contact the rod-shaped member A first rotating body arranged so as to face each other at a first minimum interval, a position where the first rotating body abuts on the rod-shaped member, and a position facing each other across the center of the rod-shaped member A pair of cylindrical rotating bodies attached to the frame so as to be able to contact the rod-shaped member in the second rotating body arranged to face each other at a second minimum interval, The inner diameter of the frame is the rod-shaped part The minimum length of the gap is smaller than the outer diameter of the rod-shaped member, and the first minimum interval and the second minimum interval are smaller than the outer diameter of the rod-shaped member and are adjacent to each other. The distance between the first rotating body and the second rotating body is greater than the first minimum distance and the second minimum distance, and the distance between the first rotating body and the second rotating body facing each other. Provides a moving body attachment that is larger than the outer diameter of the rod-shaped member to solve the above-mentioned problems.

  According to a second aspect of the present invention, the engaging portion is provided at a position facing the gap portion in the ring-shaped frame, the first rotating body is disposed so as to sandwich the engaging portion, and the second This rotating body provides a moving body mounting tool disposed at an end of the frame forming the gap, and solves the above problems.

  The invention of claim 3 is a safety device comprising a safety band that moves along the rod-shaped member, and a safety band mounting tool that is attached to the safety band on the rod-shaped member, wherein the safety band mounting tool includes a gap portion. A ring-shaped frame having an engagement portion provided on the frame, the engagement portion engaging the safety belt with the frame, and being attached to the frame so as to be in contact with the rod-shaped member. A pair of cylindrical rotators, the first rotator disposed so as to face each other at a first minimum interval, a position where the first rotator contacts the rod member, and the rod member A pair of cylindrical rotating bodies attached to the frame so as to be able to contact the rod-shaped member at positions facing each other across the center, and are arranged to face each other at a second minimum interval A rotating body, and an inner diameter of the frame The minimum length of the gap is smaller than the outer diameter of the rod-shaped member, and the first minimum interval and the second minimum interval are larger than the outer diameter of the rod-shaped member. The distance between the first rotating body and the second rotating body is smaller than the first minimum distance and the second minimum distance, and the first rotating body and the second rotating body facing each other are small. This distance provides a safety device larger than the outer diameter of the rod-shaped member, and solves the above problem.

  According to a fourth aspect of the present invention, the engaging portion is provided at a position facing the gap portion in the ring-shaped frame, the first rotating body is disposed so as to sandwich the engaging portion, and the second The rotating body provides a safety device arranged at an end of the frame that forms the gap, and solves the above-described problem.

  The invention of claim 5 includes a support member, a rod-like member supported by the support member, a safety belt that moves along the rod-like member, and a safety belt attachment that is attached to the safety belt on the rod-like member. A safety device, wherein the safety band attachment includes a ring-shaped frame having a gap, and an engagement part provided on the frame, the engagement part engaging the safety band with the frame. A pair of cylindrical rotating bodies attached to the frame so as to be able to contact the rod-shaped member, wherein the first rotating bodies are arranged to face each other at a first minimum interval, and the first A pair of cylindrical rotating bodies attached to the frame so as to be able to contact the rod-shaped member at a position facing the rod-shaped member and a position facing the rod-shaped member across the center of the rod-shaped member, , Face each other with a second minimum spacing And an inner diameter of the frame is larger than an outer diameter of the rod-shaped member, and a minimum length of the gap portion is larger than a width of the support member and an outer diameter of the rod-shaped member. The first minimum distance and the second minimum distance are smaller than the outer diameter of the rod-shaped member, and the distance between the first rotating body and the second rotating body is the first minimum distance. The distance between the first rotating body and the second rotating body facing each other is larger than the second minimum distance, and provides a safety device that is larger than the outer diameter of the rod-shaped member. It is.

  The invention according to claim 6 is a carrier mounting tool for mounting a transport body that moves up and down along the vertical bar-shaped member so that the transport body can be lifted and lowered on the vertical bar-shaped member, and the transport body mounting tool has a ring-shaped frame having a gap portion. An engagement portion provided on the frame, the engagement portion engaging the carrier with the frame, and a pair of cylindrical members attached to the frame so as to contact the vertical bar-shaped member A first rotating body that is arranged to face each other at a first minimum interval; a position where the first rotating body contacts the vertical bar-shaped member; and a center of the vertical bar-shaped member A pair of cylindrical rotators attached to the frame so as to abut against the vertical pipe at opposing positions, the second rotators disposed to face each other at a second minimum interval; Of the frame The diameter is larger than the outer diameter of the vertical bar-shaped member, the minimum length of the gap is smaller than the outer diameter of the vertical bar-shaped member, and the first minimum distance and the second minimum distance A carrier attachment that is smaller than an outer diameter and that has a distance between the first rotating body and the second rotating body that is greater than the first minimum distance and the second minimum distance is provided. To do.

The invention of claim 7 is a lifting device comprising a vertical bar-shaped member, a transport body that moves up and down along the vertical bar-shaped member, and a transport body attachment that attaches the transport body to the vertical bar-shaped member so as to be movable up and down. ,
The carrier attachment tool includes a ring-shaped frame having a gap portion, an engagement portion provided on the frame, an engagement portion for engaging the carrier with the frame, and a vertical bar-like member. A pair of cylindrical rotating bodies attached to the frame so as to be in contact with each other, a first rotating body disposed so as to face each other at a first minimum interval, and the first rotating body having the shape of a vertical bar A pair of cylindrical rotating bodies attached to the frame so as to contact the vertical bar-shaped member at a position facing the member and a position facing the center of the vertical bar-shaped member, the second minimum gap And a second rotating body arranged so as to face each other, wherein the inner diameter of the frame is larger than the outer diameter of the vertical bar-shaped member, and the minimum length of the gap is smaller than the outer diameter of the vertical bar-shaped member. The first top The distance and the second minimum distance are smaller than the outer diameter of the column, and the distance between the first rotating body and the second rotating body is larger than the first minimum distance and the second minimum distance. An elevating device is provided to solve the above problems.

  In the moving body fixture according to the first aspect of the present invention, even if a force pulling upward or obliquely upward acts on the moving body mount, the moving body mount and the rod-shaped member are not brought into sliding contact but are brought into rolling contact. It is possible to move without resistance, and even if the rod-shaped member has a curved portion, the moving body mounting tool can be moved.

  The moving body fixture according to the second aspect of the present invention has the same effect as that of the first aspect of the present invention.

  In the safety device according to the third aspect of the present invention, even if a force that pulls upward or obliquely upward acts on the safety belt mounting device, the safety belt mounting device and the rod-shaped member do not slide and do not resist by rolling contact. Even if there is a curved portion in the bar-shaped member, the safety band mounting tool can be moved, and an operator wearing the safety gear can move freely.

  The safety device according to the fourth aspect of the present invention has the same effect as that of the third aspect of the present invention.

  In the safety device according to the fifth aspect of the present invention, even if a force pulling upward or obliquely upward acts on the safety band mounting tool, the safety band mounting tool and the rod-shaped member do not slide and do not resist by rolling contact. Even if there is a curved portion in the bar-shaped member, the safety band mounting tool can be moved, and an operator wearing the safety gear can move freely.

  In the carrier attachment tool according to the sixth aspect of the invention, the carrier which is moved up and down along the bar-like member provided in the vertical direction is attached to the rod-like member without taking time and effort by the fixture having a simple structure. There is an effect that is.

  In the lifting device according to the seventh aspect of the present invention, the carrier that is lifted and lowered along the bar-like member provided in the vertical direction can be attached to the bar-like member without taking time and effort with a fixture having a simple structure. There is an effect.

The front view of the state which attached the moving body fixture of this invention to the pipe, FIG. 2 is a top view of the state which attached the mobile body fixture shown in FIG. 1 to the pipe. It is a top view of the state which attached the moving body fixture shown in FIG. 1 to the pipe. It is a left view of the state which attached the moving body fixture shown in FIG. 1 to the pipe. It is XX sectional drawing of FIG. It is explanatory drawing for demonstrating the magnitude | size, positional relationship, etc. of each part in the moving body fixture 1, the pipe 6, and the support plate 7. FIG. It is explanatory drawing explaining the state which the 1st ball bearing 3 (3a, 3b) and the 2nd ball bearing 4 (4a, 4b) contact | abut on the pipe 6. FIG. It is explanatory drawing for demonstrating the inclination state of the moving body fixture 1 on the pipe 6. FIG. It is a left view of the state where the operator wore the safety gear. 4 is a left side view of the hook portion 24. FIG. It is a top view of the state which attached the raising / lowering apparatus of this invention to the support | pillar of the wedge type scaffold. It is a left view of the raising / lowering apparatus shown in FIG. It is a left view of the state which removed the raising / lowering apparatus from the support | pillar, and removed the raising / lowering apparatus partially.

[Configuration of moving body fixture]
FIG. 1 is a front view of a state in which the moving body fixture of the present invention is attached to a pipe, FIG. 2 is a plan view of the state in which the moving body fixture shown in FIG. 1 is attached to a pipe, and FIG. FIG. 4 is a cross-sectional view taken along the line XX in FIG. 2, and FIG. 4 is a left side view of the state where the movable body fixture is attached to the pipe.
In the figure, 1 is a moving body fixture, 2 is a frame, 2a (2a1, 2a2) is a frame body, 2b (2b1, 2b2) is an end, 2c is a ring part, 2d is a hole, 3 (3a, 3b) is The first ball bearing, 4 (4a, 4b) is the second ball bearing, 5 (5a, 5b) is the split pin, 6 is the pipe, 6t is the ridge, 7 is the support plate, 8 is the hook of the moving body, GA is a gap.
As shown in the figure, the moving body fixture 1 includes a C-shaped frame 2, a pair of first ball bearings 3 (3a, 3b), a pair of second ball bearings 4 (4a, 4b), and a split pin 5 (5a). 5b).
The frame 2 is a ring-shaped frame of the present invention, and has a circular frame body 2a (2a1, 2a2), an end 2b (2b1, 2b2), and a ring portion 2c at a position facing the end 2b. The hole 2d is formed in the ring portion 2c.
The end 2b1 of the left frame body 2a1 and the end 2b2 of the right frame body 2a2 are spaced apart to form a gap GA.
The ring portion 2c is an engaging portion of the present invention, and the hook portion 8 of the moving body is hooked in the hole 2d and the moving body is attached to the ring portion 2c. The engaging portion of the present invention is the ring portion. It is not limited to a ring shape like 2c, and may be a U-shape having an open lower side.
In the present embodiment, the frame 2 is an integrated body in which a metal casting such as iron is galvanized or the like, but the frame body 2a is a metal rod, and the metal rod is bent to be made of metal. The frame 2 may be joined to the ring portion 2c by welding or the like.
Further, the C-shape of the frame 2 is not limited to an arc shape as shown in the figure, and one vertex of a polygon such as a pentagon, a hexagon, or an octagon may be separated.

The first ball bearing 3 (3a, 3b) serves as the first rotating body of the present invention. One of the first ball bearings 3a is fitted on the ring portion 2c side of the left frame body 2a1, and the other first One ball bearing 3b is fitted on the ring portion 2c side of the right frame body 2a2, and the first ball bearings 3a and 3b are arranged to face each other.
In the present embodiment, as shown in FIG. 4, the inner diameter of the first ball bearing 3 is slightly larger than the outer diameter of the frame body 2a, and the first ball bearing 3 is simply fitted into the frame body 2a. However, since the frame main body 2a is curved, the first ball bearing 3 is fixed at a position where the frame main body 2a is fitted.
In this case, a snap ring or a split pin may be attached to the frame body 2a side to securely fix the first ball bearing 3 to the frame body 2a.
The second ball bearing 4 (4a, 4b) serves as a second rotating body of the present invention, and one second ball bearing 4a is fitted into the end 2b1 of the frame body 2a1, and the other second ball. The bearing 4b is fitted into the end 2b2 of the frame body 2a1, and the second ball bearings 4a and 4b are arranged to face each other.
In this case, the outer diameter of the end 2b is slightly smaller than the outer diameter of the frame main body 2a, the end 2b becomes a stepped portion, and the second ball bearing 4 does not move toward the frame main body 2a.
The split pin 5 prevents the second ball bearing 4 from falling off, and one split pin 5a is inserted into a pin hole provided at the tip of the end 2b1, and the other split pin 5b is connected to the end. It is inserted in a pin hole provided at the tip of 2b2.
The first rotating body and the second rotating body of the present invention are not limited to the ball bearings 3 and 4 and may be any cylindrical rotating body such as a roller bearing and a sleeve bearing. Also good.
In the present embodiment, the end 2b of the frame 2 is a stepped portion, and the split pin 5 is inserted into the end 2b to prevent the second ball bearing 4 from moving in the axial direction. The second ball bearing 4 may be prevented from moving in the axial direction by a snap ring or the like.

The pipe 6 is a rod-shaped member of the present invention, is a long metal circular tube, and the inner side of the frame 2 as shown in FIG. 1 with the movable body fixture 1 attached to the pipe 6. The pipe 6 is located in the center.
The first ball bearings 3 a and 3 b and the second ball bearings 4 a and 4 b can be brought into contact with the pipe 6, and only one of them is in contact with the pipe 6. In the figure, the first ball bearings 3 a and 3 b are in a state of straddling the outer peripheral surface of the pipe 6 and abut against the pipe 6, and the second ball bearings 4 a and 4 b are separated from the pipe 6.
Further, on the upper part of the outer peripheral surface of the pipe 6, a ridge 6 t is provided along the longitudinal direction of the pipe 6. The protrusion 6t is obtained by joining a metal wire or the like to the upper part of the outer peripheral surface of the pipe 6 by welding or the like. When the movable body fixture 1 is inclined in the circumferential direction of the pipe 6, the first ball bearing 3a, 3b hits the protrusion 6t, and the movable body mounting tool 1 serves as a stopper (rotation stop) that prevents the movable body mounting tool 1 from being largely inclined.
Examples of the pipe 6 include a pipe attached to the upper part of the baseboard of the scaffold, a pipe as a horizontal member installed as a handrail for the scaffold, a pipe installed as a handrail for various stairs, and the like.
The rod-shaped member of the present invention is not limited to a metal long circular tube such as the pipe 6, but may be a plastic or a solid round bar.
The ball bearings 3 a and 3 b are in a state of straddling the outer peripheral surface of the pipe 5.

The support plate 7 is made of a metal plate, and the upper surface of the support plate 7 is joined to the outer peripheral surface of the lower portion thereof along the longitudinal direction of the pipe 6 by welding or the like.
The support plate 7 supports the pipe 6 from below and attaches the movable body fixture 1 to the pipe 6, as shown in FIG. 1, the end 2 b 1 of the frame body 2 a 1 and the end of the right frame body 2 a 2. The support plate 7 is located between 2b2 (gap part GA).
Thereby, the moving body fixture 1 can move along the pipe 6 without the end 2b of the frame body 2a or the second ball bearing 4 coming into contact with the support plate 7.
The support plate 7 may be made of plastic, may be a single long plate, or may be a plurality of plates arranged at regular intervals.
Examples of the support plate 7 include a baseboard attached to a scaffolding plate of a scaffold, a bracket that supports a handrail (pipe) of a staircase, and the like.

[Size, positional relationship, etc. of each part in the moving body fixture 1 etc.]
FIG. 5 is an explanatory diagram for explaining the size, positional relationship, and the like of each part in the moving body mounting tool 1, the pipe 6, and the support plate 7, and FIG. FIG. 2B shows the sizes of the pipe 6 and the support plate 7. In the figure, A1a and A1b are rotation axes of the first ball bearings 3a and 3b, A2a and A2b are rotation axes of the second ball bearings 4a and 4b, d0 is the minimum length of the gap GA, and d1 is the first ball bearing 3a. And the first minimum distance between the first ball bearings 3b, d2 the second minimum distance between the second ball bearing 4a and the second ball bearing 4b, and d3 the adjacent first ball bearing 3a. (3b) is the distance between the second ball bearing 4a (4b), d4 is the distance between the opposing first ball bearing 3a (3b) and the second ball bearing 4b (4a), D1 is the inner diameter of the frame 2, and D2 is the pipe 6 , T1 is the width in the left-right direction of the protrusion 6t, and t2 is the width (thickness) in the left-right direction of the support plate 7.
As shown in FIG. 5 (a), the rotation axis A1a of the first ball bearing 3a and the rotation axis A1b of the first ball bearing 3b intersect, and the distance between the bearings is from the inner side (lower side) of the frame 2 to the outer side ( (Upper side) is widened (increased) and becomes the first minimum distance d1 at the lower ends of both bearings.
Similarly, the rotation axis A2a of the second ball bearing 4a and the rotation axis A2b of the second ball bearing db also intersect, and the distance between both bearings increases (increases) from the inner side (upper side) to the outer side (lower side) of the frame 2. And a second minimum distance d2 at the upper ends of both bearings.
Similarly to the second ball bearing 4a, the gap GA extends from the inner side (upper side) to the outer side (lower side) of the frame 2, and has a minimum length d0 at its upper end.
The inner diameter D1 of the frame 2 is larger than the outer diameter D2 of the pipe 6, the minimum length d0 of the gap GA is smaller than the outer diameter D2 of the pipe 6, and the first minimum distance d1 and the second minimum distance d2 Is smaller than the outer diameter D2 of the pipe 6, and the distance d3 between the adjacent first ball bearing 3a (3b) and the second ball bearing 4a (4b) is larger than the first minimum distance d1 and the second minimum distance d2. The distance d4 between the first ball bearing 3a (3b) and the second ball bearing 4b (4a) facing each other is larger than the outer diameter D2 of the pipe 6.
As a result, the first ball bearing 3 (3a, 3b) and the second ball bearing 4 (4a, 4b) can be brought into contact with the pipe 6 in a state in which the moving body mounting tool 1 is mounted on the pipe 6. The tool 1 can move on the pipe 6 with one of the first ball bearing 3 (3a, 3b) and the second ball bearing 4 (4a, 4b) coming into contact with the pipe 6.
The first minimum distance d1 is larger than the horizontal width t1 of the protrusion 6t, and the minimum length d0 of the gap GA and the second minimum distance d2 are the horizontal width (thickness) of the support plate 7. ) It is larger than t2.
As a result, the movable body mounting tool 1 can be mounted in a state where the protrusion 6t is positioned between the first ball bearings 3a and 3b, and the support plate 7 is positioned between the second ball bearings 4a and 4b and the gap GA. It moves on the pipe 6.
The outer diameters of the first ball bearings 3a and 3b are larger than the outer diameters of the second ball bearings 4a and 4b. This is because the outer diameters of the first ball bearings 3a and 3b need to be increased to some extent so that the lower end of the ring portion 2c of the frame 2 does not hit the protrusion 6t, and the outer diameter of the second ball bearings 4a and 4b is increased. This is because the diameter is made as small as possible, the frame body 2a is brought closer to the pipe 6, the inner diameter D1 of the frame 2 is made as small as possible, and the movable body fixture 1 is made as compact as possible.

FIG. 6 is an explanatory view illustrating a state in which the first ball bearing 3 (3a, 3b) and the second ball bearing 4 (4a, 4b) are in contact with the pipe 6. FIG. 6 (a) is a diagram illustrating the first ball bearing. 3 (3a, 3b) shows a state in which the pipe 6 is in contact, FIG. 6B shows a state in which the third ball bearing 4 (4a, 4b) comes in contact with the pipe 6, and in the figure, PO is the pipe 6 Is the center of
When the moving body fixture 1 moves on the pipe 6 with the hook portion 8 of the moving body hooked in the hole 2d of the moving body fixture 1 and the moving body is attached to the ring portion 2c, the hook portion 8 When a force for pulling the moving body fixture 1 downward or laterally is applied and no force for pulling upward is applied, as shown in FIG. 6A, the first ball bearings 3a and 3b are connected to the pipe 6 at positions P1a and P1b. The moving body fixture 1 moves on the pipe 6.
On the other hand, when a force for pulling the moving body mounting tool 1 upward from the hook portion 8 is applied, the moving body mounting tool 1 is lifted and the first ball bearings 3a and 3b are connected to the pipe 6 as shown in FIG. The second ball bearings 4 a and 4 b abut on the pipe 6 at the positions P <b> 2 a and P <b> 2 b, and the movable body fixture 1 moves on the pipe 6.
The positions P1a and P1b at which the first ball bearings 3a and 3b abut on the pipe 6 are opposed to the positions P2a and P2b at which the second ball bearings 4a and 4b abut on the pipe 6 across the center PO of the pipe 6. doing.
As a result, when a pulling force is applied from the moving body to the moving body mounting tool 1 in a direction other than the upper direction, the first ball bearings 3a and 3b come into contact with the pipe 6 and the moving body mounting tool 1 moves upward from the moving body. When a pulling force is applied, the second ball bearings 4a and 4b come into contact with the pipe 6, that is, no matter what direction force is applied from the moving body to the moving body mounting tool 1, the first ball always remains. Any one of the bearings 3 a and 3 b and the second ball bearings 4 a and 4 b comes into contact with the pipe 6, and the movable body mounting tool 1 moves on the pipe 6.

[Inclination of moving body fixture 1]
FIG. 7 is an explanatory diagram for explaining the inclination state of the movable body fixture 1 on the pipe 6, and FIG. 7A shows the case where the movable body fixture 1 is not inclined in the circumferential direction of the pipe 5. FIG. 6B shows the case where the moving body fixture 1 is most inclined to the left side in the circumferential direction of the pipe 6, and FIG. The case of tilting is shown.
Here, the axis in the vertical direction (vertical direction) passing through the center of the pipe 6 is Y0, and the moving body fixture 1 is left-right symmetric. Therefore, the symmetry axis is Y1, and the maximum inclination angle of the moving body fixture 1 is α. And
The movable body fixture 1 can be inclined in the circumferential direction of the pipe 6 until the first ball bearings 3a and 3b come into contact with the ridges 6t.
Therefore, the movable body fixture 1 can be tilted to the left side in the circumferential direction of the pipe 6 until the first ball bearing 3b hits the protruding portion 6t. As shown in FIG. Are inclined to the left in the circumferential direction of the pipe 6 and the symmetry axis Y1 is at the maximum inclination angle α with respect to the axis Y0, the second ball bearings 4a, 4b and the end 2b (2b1, 2b2) of the frame 2 Does not hit the support plate 7.
Further, the movable body fixture 1 can be tilted to the right side in the circumferential direction of the pipe 6 until the first ball bearing 3a hits the protruding strip portion 6t. As shown in FIG. Is inclined to the right in the circumferential direction of the pipe 6, and the second ball bearings 4a and 4b and the end 2b of the frame 2 (2b1, 2b2) even if the symmetry axis Y1 has a maximum inclination angle α with respect to the axis Y0. ) Does not hit the support plate 7.
For this reason, even if the moving body fixture 1 attached to the pipe 6 is inclined in the circumferential direction of the pipe 6, it can move on the pipe 6 without hitting the support plate 7.
The maximum inclination angle α can be set to an appropriate angle, for example, 10 degrees to 20 degrees, by adjusting the first minimum distance d1 and the width t1 in the left-right direction of the ridge 6t.

  As described above, the movable body mounting tool 1 has the pair of first ball bearings 3 (3a, 3b) attached to the C-shaped frame 2 and a pair of second ball bearings 4 (4a, Since the structure 4b) is attached, even when the moving body fixture 1 to which the moving body is attached moves on the pipe 6 supported by the support plate 7, even if the pipe 6 is curved, the moving body attachment 1 Even if a force pulling upward or obliquely upward is applied to the movable body mounting member 1, the movable body mounting tool 1 can move on the pipe 6 by the rolling contact of the ball bearing.

[Safety equipment, safety equipment]
Next, a safety device and a safety device using the movable body mounting tool of the present invention will be described.
FIG. 8 is a left side view of the worker wearing safety equipment. In the figure, 10 is a safety equipment, 20 is a safety belt, 21 is a belt, 22 is a belt fitting, 23 is a rope, and 24 is a rope. A hook part, 30 is a safety band attachment, 40 is a scaffold part, 41 is a scaffold plate, 42 is a pipe, 42t is a ridge part, 43 is a skirting board, and WO is an operator.
As shown in FIG. 8, the safety device 10 includes a safety belt 20 and a safety belt attachment 30, and the safety belt 20 includes a belt 21, a belt fitting 22, a rope 23, and a hook portion 24.
In the safety belt 20, one end of the belt 21 and the rope 23 wound around the trunk of the operator WO is connected by a belt fitting 22, and the other end of the rope 23 is attached to the hook portion 24.
FIG. 9 is a left side view of the hook portion 24, where 24a is a hook portion body, 24b is a closing fitting, and 24c is a rope attachment fitting.
In the hook portion 24, a closing fitting 24b is rotatably attached to the upper portion of the hook portion main body 24a, and a rope attachment fitting 24c is attached to a hole provided in the upper portion of the hook portion main body 24a.
The end of the closing fitting 24b is closed by a spring (not shown) to the tip of the hook body 24a, and the rope 23 is attached to the rope attachment 24c.
The safety belt fixture 30 has the same configuration as the movable body fixture 1 shown in FIG. 1 and the like, and has a C-shaped frame 2, a pair of first ball bearings 3 (3 a, 3 b), and a pair of second ball bearings 4. (4a, 4b) and the like.
The scaffold section 40 is a place where the worker WO works on the scaffold, and includes a scaffold plate 41, a pipe 42, and a baseboard 43.
In the scaffold portion 40, a footboard is formed by attaching a footboard to a horizontal member (not shown) constituting the scaffold, and a baseboard 43 is attached to the footing board 41 for the safety of the operator. A pipe 42 is joined to the upper end of the tree 43 by welding or the like, and a protrusion 42t is provided on the upper part of the pipe 42.
In this case, the pipe 42, the ridge portion 42t, and the baseboard 43 have the same configuration as the pipe 6, the ridge portion 6t, and the support plate 7 shown in FIG.
Then, the safety belt attachment 30 is attached to the pipe 42, and the hook portion 24 of the safety belt 20 is hooked on the ring portion 2c of the safety belt attachment 30, so that the safety belt 20 and the safety belt attachment 30 are obtained. The safety device of the present invention including the pipe 42 and the baseboard 43 is configured.

  In the safety device of the present invention, when the worker WO wearing the safety belt 20 moves, the safety belt attachment 30 moves on the pipe 42 by the rolling contact of the ball bearing. The same applies even if a force pulling upward or obliquely upward acts on the fixture 30, and the operator WO can move freely without resistance.

[Carrier attachment, lifting device]
Next, the carrying body fixture and the lifting device using the moving body fixture of the present invention will be described.
10 is a plan view of a state in which the lifting device of the present invention is attached to a support of a wedge-type scaffold, FIG. 11 is a left side view of the lifting device shown in FIG. 10, and FIG. It is a left view in the state where a part was removed.
In the figure, 50 is a transport rod, 52 is a connection member, 52a is a connection port, 53 is a bolt, 54 is a nut, 60 is a transport rod attachment, 70 is a vertical pipe, 71 is a support member, 71a is a support plate portion, 72b A wedge part, 80 is a pillar of a wedge-type scaffold, 81 is a pillar pipe, 82 (82a, 82b, 82c, 82d) is a pocket metal fitting, GR is the ground, and the same parts are denoted by the same reference numerals. .
The transport rod 50 is a transport body of the present invention, and includes a rod main body 51 that is a rectangular parallelepiped frame body, connecting members 52 provided at four locations on the back, top, bottom, left, and right of the rod main body 51, and connecting members 52. A bolt 53 and a nut 54 for connecting and fixing the carrying rod attachment 60 are provided.
The carrying rod attachment 60 is a carrying attachment of the present invention, has the same configuration as the moving attachment 1 shown in FIG. 1 and the like, and has a C-shaped frame 2 and a pair of first ball bearings 3 ( 3a, 3b) and a pair of second ball bearings 4 (4a, 4b).
As shown in FIG. 12, in the connection and fixing of the transport rod 50 and the transport rod attachment 60, the ring portion 2c of the frame 2 is inserted into the connection port 52a of the connection member 52, and the bolt 53 is connected to the connection member 52 and the ring portion 2c. By inserting and tightening with the nut 54, the carrying rod 50 and the carrying rod attachment 60 can be connected and fixed.
The vertical pipe 70 is a vertical bar-shaped member of the present invention and corresponds to the pipe 6 shown in FIG. 1 and the like, but its outer diameter is different from that of the pipe 6 and the first ball bearing 3a (3b) and the first It is the same as the distance d4 of the two-ball bearing 4b (4a). This is because both the first ball bearings 3 a and 3 b and the second ball bearings 4 b and 4 a roll on the peripheral surface of the vertical pipe 70.
The support member 71 has a T-shape in plan view, and includes a support plate portion 71a and a wedge portion 72b, and the support plate portion 71a side is attached to the vertical pipe 70 at a predetermined interval by welding or a clamp fitting.
The column 80 is a column of a wedge type scaffold, and includes a column pipe 81 and four pocket fittings 82 (82a, 82b, 82c, 82d) welded and attached in the circumferential direction of the column pipe. (Not shown) is erected on the ground GR.
As shown in FIG. 12, the vertical pipe 70 is attached to the support 80 by inserting (driving) the wedge portion 72 b of the support member 71 into the pocket fitting 82 (82 a) of the support 80.
And the lifting / lowering device of the present invention is constituted by the carrying rod 50, the carrying rod attachment 60 and the vertical pipe 70, the material is placed on the carrying rod 50, and a hoist such as a winch (not shown) is used (the hoisting machine). The carrying rod 50 can be lifted and lowered along the vertical pipe 70 (for example, by hooking the hook portion of the hook portion on a rope spanning the carrying rod 50).

  The moving body mounting tool, the safety device, the safety device, the transport body mounting tool, and the lifting device according to the present invention are provided by attaching a moving body that moves along the bar-shaped member to the bar-shaped member by the mounting tool, and rolling the contact to the bar-shaped member. Even when a force pulling upward or obliquely upward acts on the fixture, the fixture and the rod-shaped member can move without resistance by rolling contact without sliding contact, and the rod-shaped member Even if there is a curved part, the fixture can move, and workers wearing safety tools that connect the fixture and safety band can move freely, and in addition, it is a bar-like shape provided in the vertical direction A transport body such as a transport rod that is moved up and down along the member can be attached to a rod-shaped member without taking time and effort with a simple structure mounting tool. Body mounting And it can be used as a lifting device.

DESCRIPTION OF SYMBOLS 1 Moving body fixture 2 Frame 2a, 2a1, 2a2 Frame main body 2b, 2b1, 2b2 End 2c Ring part 2d Hole 3, 3a, 3b First ball bearing 4, 4a, 4b Second ball bearing 5, 5a, 5b Pin 6 Pipe 6t Protruding section 7 Support plate 8 Hook part 10 of moving body Safety device 20 Safety belt 21 Belt 22 Belt bracket 23 Rope 24 Hook portion 30 Safety belt mounting tool 40 Scaffolding portion 41 Scaffold plate 42 Pipe 42t Convex portion 43 Skirting board 50 Transport rod 52 Connection member 52a Connection port 53 Bolt 54 Nut 60 Transport rod attachment 70 Vertical pipe 71 Support member 71a Support plate portion 72b Wedge portion 80 Column 81 Column pipe 82, 82a, 82b, 82c, 82d Pocket fitting GA It is a gap.
GR Ground PO Center WO Worker

Claims (7)

A moving body attachment that movably attaches a moving body that moves along a rod-shaped member to the rod-shaped member,
The moving body fixture is
A ring-shaped frame having a gap,
An engaging portion provided in the frame, the engaging portion engaging the movable body with the frame;
A pair of cylindrical rotating bodies attached to the frame so as to be in contact with the rod-shaped member, the first rotating bodies arranged to face each other at a first minimum interval;
A pair of cylindrical rotating bodies attached to the frame so as to be able to contact the rod-shaped member at a position where the first rotating body is in contact with the rod-shaped member and a position facing the center of the rod-shaped member. And comprising a second rotating body arranged to face each other at a second minimum interval,
The inner diameter of the frame is larger than the outer diameter of the rod-shaped member,
The minimum length of the gap is smaller than the outer diameter of the rod-shaped member,
The first minimum interval and the second minimum interval are smaller than the outer diameter of the rod-shaped member,
The distance between the adjacent first rotating body and the second rotating body is greater than the first minimum interval and the second minimum interval,
The moving body mounting tool, wherein a distance between the first rotating body and the second rotating body facing each other is larger than an outer diameter of the rod-shaped member. The engaging portion is provided at a position facing the gap portion in the ring-shaped frame,
The first rotating body is disposed so as to sandwich the engaging portion,
The moving body fixture according to claim 1, wherein the second rotating body is disposed at an end portion of the frame forming the gap portion. A safety device including a safety belt that moves along the rod-shaped member, and a safety belt attachment that is attached to the safety belt on the rod-shaped member,
The safety belt fixture is
A ring-shaped frame having a gap,
An engagement portion provided on the frame, the engagement portion engaging the safety belt with the frame;
A pair of cylindrical rotating bodies attached to the frame so as to be in contact with the rod-shaped member, the first rotating bodies arranged to face each other at a first minimum interval;
A pair of cylindrical rotating bodies attached to the frame so as to be able to contact the rod-shaped member at a position where the first rotating body is in contact with the rod-shaped member and a position facing the center of the rod-shaped member. And comprising a second rotating body arranged to face each other at a second minimum interval,
The inner diameter of the frame is larger than the outer diameter of the rod-shaped member,
The minimum length of the gap is smaller than the outer diameter of the rod-shaped member,
The first minimum interval and the second minimum interval are smaller than the outer diameter of the rod-shaped member,
The distance between the first rotating body and the second rotating body is larger than the first minimum interval and the second minimum interval,
A safety device, wherein a distance between the first rotating body and the second rotating body facing each other is larger than an outer diameter of the rod-shaped member. The engaging portion is provided at a position facing the gap portion in the ring-shaped frame,
The first rotating body is disposed so as to sandwich the engaging portion,
The safety device according to claim 3, wherein the second rotating body is disposed at an end portion of the frame forming the gap portion. A safety device comprising a support member, a rod-like member supported by the support member, a safety belt that moves along the rod-like member, and a safety belt attachment that is attached to the safety belt on the rod-like member,
The safety belt fixture is
A ring-shaped frame having a gap,
An engagement portion provided on the frame, the engagement portion engaging the safety belt with the frame;
A pair of cylindrical rotating bodies attached to the frame so as to be in contact with the rod-shaped member, the first rotating bodies arranged to face each other at a first minimum interval;
A pair of cylindrical rotating bodies attached to the frame so as to be able to contact the rod-shaped member at a position where the first rotating body is in contact with the rod-shaped member and a position facing the center of the rod-shaped member. And comprising a second rotating body arranged to face each other at a second minimum interval,
The inner diameter of the frame is larger than the outer diameter of the rod-shaped member,
The minimum length of the gap is larger than the width of the support member and smaller than the outer diameter of the rod-shaped member,
The first minimum interval and the second minimum interval are smaller than the outer diameter of the rod-shaped member,
The distance between the first rotating body and the second rotating body is larger than the first minimum interval and the second minimum interval,
The safety device according to claim 1, wherein a distance between the first rotating body and the second rotating body facing each other is larger than an outer diameter of the rod-shaped member. A carrier attachment tool for attaching a carrier that moves up and down along a vertical bar-like member to the vertical bar-like member so as to be movable up and down,
The carrier fixture is
A ring-shaped frame having a gap,
An engaging portion provided on the frame, the engaging portion engaging the carrier with the frame;
A pair of cylindrical rotating bodies attached to the frame so as to contact the vertical bar-shaped member, and a first rotating body arranged to face each other at a first minimum interval;
A pair of cylindrical rotating bodies attached to the frame so as to contact the vertical pipe at a position where the first rotating body contacts the vertical bar-shaped member and a position opposite to the center of the vertical bar-shaped member. And comprising a second rotating body arranged to face each other at a second minimum interval,
The inner diameter of the frame is larger than the outer diameter of the vertical bar-shaped member,
The minimum length of the gap is smaller than the outer diameter of the vertical bar-shaped member,
The first minimum distance and the second minimum distance are smaller than the outer diameter of the support column,
A transporter fixture according to claim 1, wherein a distance between the first rotating body and the second rotating body is greater than the first minimum distance and the second minimum distance. A lifting device including a vertical bar-shaped member, a transport body that moves up and down along the vertical bar-shaped member, and a transport body attachment that attaches the transport body to the vertical bar-shaped member so as to be movable up and down.
The carrier fixture is
A ring-shaped frame having a gap,
An engaging portion provided on the frame, the engaging portion engaging the carrier with the frame;
A pair of cylindrical rotating bodies attached to the frame so as to contact the vertical bar-shaped member, and a first rotating body arranged to face each other at a first minimum interval;
A pair of cylindrical rotations attached to the frame so as to contact the vertical bar-shaped member at a position where the first rotating body contacts the vertical bar-shaped member and a position opposite to the center of the vertical bar-shaped member. And a second rotating body arranged to face each other at a second minimum interval,
The inner diameter of the frame is larger than the outer diameter of the vertical bar-shaped member,
The minimum length of the gap is smaller than the outer diameter of the vertical bar-shaped member,
The first minimum distance and the second minimum distance are smaller than the outer diameter of the support column,
The elevating device, wherein a distance between the first rotating body and the second rotating body is larger than the first minimum interval and the second minimum interval.

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