JP2018127841A - Scaffold device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve worker's safety and work efficiency.SOLUTION: In a scaffold device 100 having a ladder portion 110 provided with a suspending member 113 provided on one end side in the longitudinal direction and a scaffold portion 120 having a pair of scaffold members 121 provided on both sides of the ladder portion 110, an expansion scaffold member 122 provided to be slidable along the extending direction of the scaffold members 121 is connected to each of the pair of scaffold members 121 with respect to the connected scaffold members 121. Thereby, after installing the scaffold device 100, a work floor can be suitably enlarged.SELECTED DRAWING: Figure 6

Description

  The present invention relates to a scaffold device installed during work.

  Cables spanned between the strait-crossing towers are suspended by a large-scale suspension device provided at the tip of the arm of the strait-crossing tower in the sky above the strait. In this way, when carrying out the overhead line work that crosses the strait between the strait-crossing steel towers, in order to ensure the safety of workers and improve the workability, the tip of the steel tower arm has been conventionally inverted T-shaped. The work was carried out using the inverted T-shaped ladder as a scaffold.

  Scaffolds such as inverted T-shaped ladders used for overhead wire work are installed at extremely high positions such as a strait-crossing steel tower. For this reason, in the past, it was assumed that the scaffold was lifted from the ground to a desired position, or when the scaffold was installed on a steel tower or suspension system for a long period of time. It was reduced.

  On the other hand, as described above, scaffolds with a structure that reduces the influence of wind pressure have a short scaffold length by keeping the scaffold small, for example, performing work to attach tools and accessories to the tip of the clamp In some cases, such as failure to do. In addition, since the place where the scaffolding is installed is extremely high and the lifting and installation of the scaffolding is large, it is realistic to always secure a wide scaffolding or to move the position by changing the scaffolding whenever there is a shortage. is not. Conventionally, as a countermeasure, there has been a technique that enables a worker to move by adding an expansion / contraction function or an expansion function in a suspended scaffold (for example, see Patent Documents 1 to 6 below).

  Moreover, as a related technique, for example, in a folding suspension scaffold device, conventionally, among a plurality of vertical members that are rotatably connected and a horizontal frame erected between opposing vertical members, Assembling and dismantling to be suitable for work in high places by installing scaffolding plates between horizontal members in opposing building frames and arranging braces at positions avoiding connecting parts of opposing building frames There has been a technique for facilitating work (see, for example, Patent Document 7 below).

  Further, the conventional inverted T-shaped ladder has not been provided with a fall prevention measure that assumes a fallen object from a high place. Conventionally, as a related technique, a plurality of bone members can be pivoted up and down in an annulus attached to a power pole, and a net member is attached to cover the periphery of the plurality of bone members to prevent falling objects There has been a technique related to tools (see, for example, Patent Document 8 below).

Japanese Patent No. 5768622 Japanese Patent No. 5860182 Japanese Patent No. 5860186 Japanese Patent No. 5860187 JP-A-8-284398 JP 2008-95373 A Japanese Patent No. 5182014 Japanese Patent Laying-Open No. 2006-15802

  However, the conventional techniques described in Patent Documents 1 to 5 described above require a separate bracket such as a single tube clamp in order to fix the scaffold, and if such a fixture is dropped, a great deal of damage is caused. There is a problem that it is not suitable as a scaffold for use in high-altitude work, particularly in work at extremely high positions such as a strait-crossing tower. In addition, work at extremely high positions such as a cross-strait tower is greatly affected by wind vibration, and scaffolds that use fixing brackets have the problem that the fixing brackets may loosen and fall due to vibration, resulting in poor safety. It was.

  Moreover, since the conventional technique described in Patent Document 6 described above requires a wire for expanding and contracting the scaffold and a winding device for the wire, the size of the scaffold is large, and the influence of wind pressure on installation and overhead wire work. There is a problem that it is not suitable for work at an extremely high position such as a cross-strait tower. Moreover, since the conventional technique described in the above-mentioned Patent Document 5 requires a wire for expanding and contracting the scaffold and a winding device for the wire, the weight of the scaffold is large, and installation and removal work becomes large. There was a problem that.

  In addition, the conventional technique described in Patent Document 7 described above requires a column that supports both ends of the scaffold in order to fix the scaffold, and is not suitable for the overhead line work for the suspension device. It was. In addition, the conventional technique described in Patent Document 8 described above has fallen when a heavy object such as a tool or material is dropped, especially in an operation at an extremely high position such as a strait-crossing steel tower. There is a problem that the net member does not have a structure that can withstand an impact caused by a tool or material, resulting in poor safety.

  SUMMARY OF THE INVENTION An object of the present invention is to provide a scaffold device that can improve the safety of workers and the efficiency of work in order to eliminate the above-described problems caused by the prior art.

  In addition, the present invention aims to improve the safety of workers and work efficiency in order to eliminate the above-described problems caused by the prior art, and to improve the safety around the work site by preventing the material from falling. An object is to provide a scaffold device that can be secured.

  In order to solve the above-described problems and achieve the object, a scaffold device according to the present invention includes a plurality of horizontal rails provided between a pair of support columns, and is provided on one end side in the length direction of the pair of support columns. A ladder portion provided with a suspended member, and one end portion provided on one side and the other surface side of the ladder portion, the other end portion being connected to the opposite side to the suspension member in the length direction of the ladder portion. Each having a pair of scaffolding members each having a substantially plate shape and extending in a direction away from the connecting position with the ladder portion, wherein the scaffolding portion is coupled to each of the pair of scaffolding members. And an expansion scaffolding member having a substantially plate shape and provided so as to be slidable along the extending direction of the scaffolding member with respect to the connected scaffolding member.

  Further, in the scaffold device according to the present invention, in the above-described invention, a plurality of the extension scaffold members are stacked along a thickness direction of the scaffold member, and each of the scaffold members is against the extension scaffold member on the scaffold member side. The scaffold member is slidable along the extending direction of the scaffold member.

  Further, in the scaffold device according to the present invention, in the above invention, the pair of scaffold members each have a connecting position with respect to the ladder portion as a rotation center, and the extending direction of the pair of scaffold members is the position of the ladder portion. It is provided so as to be rotatable between a first position that is parallel to the length direction and a second position that is a state in which the pair of scaffold members extend in opposite directions. Features.

  Further, in the scaffold device according to the present invention, in the above invention, the scaffold portion is provided on the scaffold member, and is provided on the handrail member standing from a plate surface formed by the scaffold member, and the expansion scaffold member. And a handrail member standing from a plate surface formed by the expansion scaffold member.

  Further, the scaffold device according to the present invention is the above-described invention, comprising the mesh member, and storing the mesh member in the standing surface of the handrail member, and deploying the mesh member along the handrail member. And a deployment position, and a fall prevention unit positioned at the deployment position.

  According to the scaffold device concerning this invention, there exists an effect that the improvement of a worker's safety and the improvement of work efficiency can be aimed at.

  Moreover, according to the scaffold device concerning this invention, while improving the safety | security of a worker and improvement of work efficiency, the effect that the safety | security around a work site can be ensured by preventing fall of material. Play.

It is explanatory drawing (the 1) which shows the structure of the scaffold apparatus of Embodiment 1 concerning this invention. It is explanatory drawing (the 2) which shows the structure of the scaffold apparatus of Embodiment 1 concerning this invention. It is explanatory drawing (the 3) which shows the structure of the scaffold apparatus of Embodiment 1 concerning this invention. It is explanatory drawing (the 1) which shows the sliding mechanism of the scaffold member for expansion. It is explanatory drawing (the 2) which shows the sliding mechanism of the scaffold member for expansion. It is explanatory drawing (the 1) which shows the scaffold apparatus in a scaffold extension state. It is explanatory drawing (the 2) which shows the scaffold apparatus in a scaffold extension state. It is explanatory drawing (the 3) which shows the scaffold apparatus in a scaffold extension state. It is explanatory drawing which shows the use procedure of Embodiment 1 concerning this invention. It is explanatory drawing (the 1) which shows the structure of the scaffold apparatus of Embodiment 2 concerning this invention. It is explanatory drawing (the 2) which shows the structure of the scaffold apparatus of Embodiment 2 concerning this invention. It is explanatory drawing (the 3) which shows the structure of the scaffold apparatus of Embodiment 2 concerning this invention. It is explanatory drawing (the 1) which shows the expansion | deployment procedure of a fall prevention part. It is explanatory drawing (the 2) which shows the expansion | deployment procedure of a fall prevention part. It is explanatory drawing (the 3) which shows the expansion | deployment procedure of a fall prevention part. It is explanatory drawing (the 4) which shows the expansion | deployment procedure of a fall prevention part. It is explanatory drawing (the 1) which shows another structure of the frame member in a fall prevention part. It is explanatory drawing (the 2) which shows another structure of the frame member in a fall prevention part. It is explanatory drawing (the 3) which shows another structure of the frame member in a fall prevention part. It is explanatory drawing (the 4) which shows another structure of the frame member in a fall prevention part. It is explanatory drawing (the 5) which shows another structure of the frame member in a fall prevention part. It is explanatory drawing (the 6) which shows another structure of the frame member in a fall prevention part. It is explanatory drawing (the 1) which shows the scaffold apparatus of Embodiment 3 concerning this invention. It is explanatory drawing (the 2) which shows the scaffold apparatus of Embodiment 3 concerning this invention.

  Hereinafter, preferred embodiments of a scaffold device according to the present invention will be described in detail with reference to the accompanying drawings.

<Embodiment 1>
(Configuration of scaffold device)
First, the structure of the scaffold apparatus of Embodiment 1 concerning this invention is demonstrated. 1-3 is explanatory drawing which shows the structure of the scaffold apparatus of Embodiment 1 concerning this invention. In FIG. 1, the state which looked at the scaffold apparatus of Embodiment 1 concerning this invention from diagonally upward is shown. In FIG. 2, the state which looked at the scaffold apparatus of Embodiment 1 concerning this invention from the arrow A direction in FIG. 1 is shown. In FIG. 3, the state which looked at the scaffold apparatus of Embodiment 1 concerning this invention from the arrow B direction in FIG. 1 is shown.

  1 to 3, the scaffold device 100 according to the first embodiment of the present invention includes a ladder part 110 and a scaffold part 120. The ladder part 110 includes a pair of support pillars 111, a plurality of horizontal rails 112, and a suspension member 113. A pair of support | pillar 111 makes | forms the rod shape which makes a vertical direction a longitudinal direction in the state which installed the scaffold apparatus 100. As shown in FIG. Specifically, the pair of support pillars 111 form a prism or a cylinder. The pair of struts 111 are provided in parallel to each other. The pair of struts 111 can be formed using, for example, stainless steel.

  Each of the plurality of horizontal rails 112 is provided between the pair of columns 111. The horizontal rail 112 has an elongated plate shape or a prism shape. The horizontal rail 112 may have a cylindrical shape. The horizontal rail 112 is fixed to the pair of columns 111 at both ends so as to be bridged between the pair of columns 111. The horizontal rail 112 can be formed using, for example, stainless steel, and is fixed to the column 111 by welding or the like.

  The suspension member 113 is provided on one end side in the length direction of the pair of support columns 111. The suspension member 113 can be realized by, for example, a through hole 113a or a ring with which a hook is engaged. Alternatively, the suspension member 113 may be realized by a hook, for example, or may be a substantially U-shaped member with which the hook is engaged. The hook can be formed using, for example, stainless steel.

  The scaffold part 120 is connected to the ladder part 110. The scaffold part 120 is connected to the ladder part 110 with the ladder part 110 in between and facing the ladder part 110 along a direction perpendicular to the surface formed by the support pillars 111 and the plurality of horizontal rails 112. . The scaffold part 120 is suspended by a wire 201 spanned between the ladder part 110 and the scaffold part 120, for example, in a state where the scaffold part 120 is attached to a predetermined attachment target position in a strait crossing tower, and the load of the scaffold part 120 is It is possible to prevent the ladder part 110 and the scaffold part 120 from being concentrated at the connection position, and to support the scaffold part 120 stably.

  The scaffold part 120 includes a scaffold member 121 and an expansion scaffold member 122. The scaffold member 121 has a substantially rectangular flat plate shape with a flat portion (work floor) on which a worker puts his / her foot during work. Specifically, for example, the scaffold member 121 is realized by a member in which the work floor has a substantially plate shape with a rectangular shape, and a short side direction, that is, an end portion in the width direction of the scaffold member 121 has a Z-shaped steel shape. (See FIG. 4). Alternatively, the scaffold member 121 is specifically a grooved steel in which, for example, the work floor has a substantially plate shape having a rectangular shape, and ends in the width direction are bent in the same direction (direction toward the expansion scaffold member 122). It may be realized by a member having a shape (see FIG. 5).

  In the scaffold member 121, the work floor portion is preferably formed by a member having a plurality of holes through which air passes, such as punching metal, expanding metal, or net-like shape. By using a member having a plurality of holes through which air passes, the weight of the scaffold device 100 is reduced, and the effect of the wind pressure on the scaffold device 100 is reduced, for example, the scaffold device 100 shakes and becomes unstable due to wind pressure. can do. The scaffold member 121 may be formed of a plate-like member without unevenness.

  Each of the pair of scaffold members 121 is connected to the pair of support columns 111 on one end side in the length direction (hereinafter referred to as “one side” as appropriate). The scaffold member 121 is connected to the pair of struts 111 on the opposite side of the pair of struts 111 from the suspension member 113. In addition, the other end side in the length direction (hereinafter, referred to as “other side side” as appropriate) of the scaffold portion 120 extends in a direction away from the connection position with the pair of struts 111.

  The scaffold member 121 is provided with a handrail member 130 that stands up from a plate surface formed by the scaffold member 121. The handrail member 130 has a plurality of support members 131 standing up from a plate surface formed by the scaffold member 121 at a predetermined interval and a support member 131 extending along a direction parallel to the plate surface formed by the scaffold member 121. And a connecting member 132 to be connected.

  The support member 131 and the connecting member 132 can be realized by an elongated bar-like member. By realizing the support member 131 and the connecting member 132 by elongated rod-like members, the influence of the wind pressure on the scaffold device 100, such as the scaffold device 100 being shaken and unstable by the wind pressure, can be reduced. In addition, by realizing the support member 131 and the connecting member 132 by elongated rod-like members, it is possible to ensure the safety of workers while suppressing an increase in the weight of the scaffold device 100.

  The handrail member 130 includes a bracing member 133 provided in a frame formed by the scaffold member 121, the support member 131, and the connecting member 132. The bracing member 133 can be realized by an elongated rod-like member that is the same as or thinner than the rod-like member that realizes the support member 131 and the connecting member 132. Thereby, weight reduction of the scaffold apparatus 100 can be achieved.

  The bracing member 133 forms a truss structure together with the support member 131 and the connecting member 132. Accordingly, even when the handrail member 130 is realized by an elongated bar-like member in order to reduce the weight of the scaffold device 100, the strength of the handrail member 130 can be ensured and the safety of the worker can be ensured.

  The expansion scaffold member 122 is connected to each of the pair of scaffold members 121. Specifically, the expansion scaffold member 122 may be realized by a member having an H-shaped steel shape in which the work floor has a substantially plate shape having a rectangular shape, and end portions in the width direction protrude from both surfaces of the plate surface. (See FIG. 5).

  In the expansion scaffold member 122, the portion to be a work floor is formed by a member having a plurality of holes through which air passes, such as a punching metal, an expanding metal, or a net shape, like the scaffold member 121. It is preferable. By using a member having a plurality of holes through which air passes, the weight of the scaffold device 100 is reduced, and the effect of the wind pressure on the scaffold device 100 is reduced, for example, the scaffold device 100 shakes and becomes unstable due to wind pressure. can do. The expansion scaffold member 122 may be formed of a plate-like member without unevenness.

  The expansion scaffold member 122 can be provided at any position above or below the scaffold member 121 in the vertical direction. The lengthwise dimension of the expansion scaffold member 122 is preferably shorter than the lengthwise dimension of the scaffold member 121. The dimension in the length direction of the expansion scaffold member 122 may be equal to the dimension in the length direction of the scaffold member 121 or may be longer than the dimension in the length direction of the scaffold member 121.

  The expansion scaffold member 122 is provided to be slidable along the length direction of the scaffold member 121 with respect to the scaffold member 121 to which the expansion scaffold member 122 is coupled. In the scaffold device 100, the work floor can be expanded during work by sliding the expansion scaffold member 122 along the scaffold member 121 in a direction away from the ladder portion 110 (see FIGS. 6 to 8). . Further, in the scaffold device 100, the size of the scaffold device 100 is reduced by sliding the expansion scaffold member 122 in the direction of approaching the ladder portion 110 along the scaffold member 121 from a state where the work floor is expanded. be able to.

  The handrail member 130 is also provided on the expansion scaffold member 122. In the scaffold device 100, when the expansion scaffold member 122 is provided below the scaffold member 121, the spacing (interval in the width direction) between the handrail members 130 provided in the expansion scaffold member 122 is provided in the scaffold member 121. The distance between the handrail members 130 is wider. Further, in the scaffold device 100, when the expansion scaffold member 122 is provided on the upper side of the scaffold member 121, the spacing (interval in the width direction) between the handrail members 130 provided on the expansion scaffold member 122 is provided in the scaffold member 121. The distance between the handrail members 130 is made narrower.

  The number of the scaffold members 122 for expansion connected to each of the pair of scaffold members 121 may be one or more than two. In the scaffold device 100 including the plurality of expansion scaffold members 122, the plurality of expansion scaffold members 122 are stacked along the thickness direction of the scaffold member 121. In this case, for example, the plurality of expansion scaffold members 122 are stacked above the scaffold member 121 in the vertical direction.

  The plurality of expansion scaffold members 122 are provided so as to be slidable along the expansion scaffold member 122 immediately below. In the scaffold device 100 configured by stacking a plurality of expansion scaffold members 122 on the upper side of the scaffold member 121, each expansion scaffold member 122 is positioned so as to be superimposed on the direct expansion scaffold member 122. Each is provided so as to be slidable along the expansion scaffold member 122 located immediately below the position between the ladder member 110 and the position farther from the ladder portion 110 than the expansion scaffold member 122.

(Example of slide mechanism of expansion scaffold member 122)
Next, an example of the sliding mechanism of the expansion scaffold member 122 will be described. 4 and 5 are explanatory views showing a sliding mechanism of the expansion scaffold member 122. FIG. FIG. 4 shows a part of the scaffold part 120 when the scaffold member 121 and the expansion scaffold member 122 are realized by a member having an end in the width direction having a Z-shaped steel shape.

  In FIG. 4, the scaffold member 121 and the expansion scaffold member 122 constitute the scaffold portion 120 in a state where the end portions in the width direction forming a substantially Z-shaped steel shape are overlapped. In the expansion scaffold member 122, a roller 123 is provided on the surface of the scaffold member 121 side. The roller 123 may be a fixed wheel that rotates around a rotation axis, or may be a turning wheel that rotates (turns) around an attachment axis that is orthogonal to the rotation axis.

  A plurality of rollers 123 are provided over the length of the expansion scaffold member 122. Thereby, sliding of the expansion scaffold member 122 with respect to the scaffold member 121 can be performed smoothly. The roller 123 is not limited to the end portion in the width direction of the expansion scaffold member 122 but may be provided on the work floor.

  The scaffold device 100 includes a lock mechanism 401 that fixes the position of the expansion scaffold member 122 relative to the scaffold member 121. The lock mechanism 401 includes a through hole 402 provided in the scaffold member 121 and the expansion scaffold member 122, and a lock pin 403 inserted into the through hole 402. Each through-hole penetrates the scaffold member 121 and the expansion scaffold member 122 along the vertical direction. The scaffold member 121 is provided with a plurality of through holes 402 along the length direction of the scaffold member 121.

  The lock mechanism 401 includes an expansion scaffold member 122 that includes a through hole 402 of any of the plurality of through holes 402 provided in the scaffold member 121 and a through hole 402 provided in the expansion scaffold member 122. In a state where the lock pin 403 is inserted so as to penetrate each through-hole 402 while being slid to the overlapping position, the position of the expansion scaffold member 122 relative to the scaffold member 121 is fixed. The size of the work floor to be expanded can be adjusted depending on which through-hole 402 of the plurality of through-holes 402 provided in the scaffold member 121 is inserted.

  The lock pin 403 has a bent shape on one end side of the insertion shaft inserted into the through hole 402. Thereby, even when each through-hole 402 is penetrated along the vertical direction, the lock pin 403 can be prevented from falling. Further, by penetrating each through hole 402 along the vertical direction, it is possible to ensure visibility when the lock pin 403 is inserted, and to easily and reliably perform the work.

  FIG. 5 shows a part of the scaffold part 120 in the case where the scaffold member 121 and the expansion scaffold member 122 are realized by a member having an end in the width direction having a grooved steel shape. In FIG. 5, the scaffold member 121 is realized by a member having a grooved steel shape. The expansion scaffold member 122 is realized by a member having an H-shaped steel shape. The scaffold part 120 is configured by superimposing the scaffold member 121 and the expansion scaffold member 122 so as to store the expansion scaffold member 122 inside the groove of the scaffold member 121.

  In the expansion scaffolding member 122 having an H-shaped steel shape, a roller 123 is provided at the tip of the projecting portion 501 projecting toward the scaffolding member 121 side. A plurality of rollers 123 are provided over the length of the expansion scaffold member 122. The roller 123 may be a fixed vehicle or a turning vehicle as described above. Thereby, sliding of the expansion scaffold member 122 with respect to the scaffold member 121 can be performed smoothly.

  As in the scaffold device 100 configured as shown in FIG. 4, the lock mechanism 401 in the scaffold device 100 configured as illustrated in FIG. 5 includes a through hole 402 that penetrates the scaffold member 121 and the expansion scaffold member 122, and the through holes 402. And a lock pin 403 to be inserted. Each through-hole 402 penetrates the scaffold member 121 and the expansion scaffold member 122 in the horizontal direction. The scaffold member 121 is provided with a plurality of through holes 402 along the length direction of the scaffold member 121.

  The lock mechanism 401 includes an expansion scaffold member 122 that includes a through hole 402 of any of the plurality of through holes 402 provided in the scaffold member 121 and a through hole 402 provided in the expansion scaffold member 122. In a state where the lock pin 403 is inserted so as to penetrate each through-hole 402 while being slid to the overlapping position, the position of the expansion scaffold member 122 relative to the scaffold member 121 is fixed. The size of the work floor to be expanded can be adjusted depending on which through-hole 402 of the plurality of through-holes 402 provided in the scaffold member 121 is inserted.

  The lock pin 403 has a bent shape on one end side of the insertion shaft inserted into the through hole 402. Thereby, even when each through-hole 402 is penetrated along the vertical direction, the lock pin 403 can be prevented from falling. Further, by penetrating each through hole 402 along the vertical direction, it is possible to ensure visibility when the lock pin 403 is inserted, and to easily and reliably perform the work.

  The lock pin 403 may be connected to the expansion scaffold member 122 via a chain or a rope. Thereby, loss of the lock pin 403 can be prevented, and the position of the expansion scaffold member 122 relative to the scaffold member 121 can be reliably fixed when necessary.

  The scaffold device 100 according to the first embodiment of the present invention can be transformed from the scaffold storage state shown in FIGS. 1 to 3 to the scaffold extension state shown in FIGS. 6 to 8. 6-8 is explanatory drawing which shows the scaffold apparatus 100 in a scaffold extension state. In FIG. 6, the state which looked at the scaffold apparatus 100 in the scaffold extended state from diagonally upward is shown. In FIG. 7, the state which looked at the scaffold apparatus 100 in the scaffold extended state from the arrow A direction in FIG. 6 is shown. In FIG. 8, the state which looked at the scaffold apparatus 100 in the scaffold extended state from the arrow B direction in FIG. 6 is shown.

  As shown in FIGS. 6 to 8, the scaffold device 100 according to the first embodiment of the present invention is a scaffold by sliding an expansion scaffold member 122 in a direction away from the ladder portion 110 with respect to the scaffold member 121. Deformed into an extended state. In the scaffold device 100 including one expansion scaffold, the work floor can be increased to about twice the scaffold storage state by setting the scaffold in the extended state.

  In the scaffold device 100, when the expansion scaffold member 122 is provided on the upper side of the scaffold member 121 in the vertical direction, the dimension of the expansion scaffold member 122 in the length direction is larger than the dimension of the scaffold member 121 in the length direction. If it is short, the worker who uses the scaffold device 100 can slide the expansion scaffold member 122 while standing on the scaffold member 121 to deform it into the stretched state of the scaffold. Thereby, even in a high place where the standing position is restricted, a space for sliding the expansion scaffold member 122 can be secured, and the operation of deforming the scaffold device 100 from the scaffold storage state to the scaffold extension state can be performed safely and It can be done reliably.

  In the scaffold device 100 including two or more extension scaffold members 122, the scaffold member 121 is slid according to the number of the extension scaffold members 122 slid in the direction away from the ladder portion 110 with respect to the scaffold member 121. The number of working areas can be increased by the number of extension scaffolds. In this case, each expansion scaffold member 122 is appropriately slid according to the length required for the work. Thereby, when the area where the worker works is excessively increased, the influence of the wind pressure on the scaffold device 100 can be reduced, such that the scaffold device 100 is easily shaken and unstable due to the wind pressure. .

(Procedure for using scaffold device 100)
Next, a procedure for using the scaffold device 100 according to the first embodiment of the present invention will be described. FIG. 9 is an explanatory diagram showing a use procedure of the first embodiment according to the present invention. In FIG. 9, when the scaffold device 100 is used, first, the suspension member 113 of the scaffold device 100 is fixed to an attachment target position on the strait-crossing steel tower 901.

  Specifically, the scaffold device 100 is attached to the tip of the steel tower arm 902, for example, by being fixed so as to be hooked on the tip of the steel tower arm 902. The suspension member 113 can be fixed by hooking the suspension member 113 on a crane hook attached to an attachment target position such as the tip of the steel tower arm 902. The scaffold device 100 is installed, for example, when performing work on the suspension device 903 provided at the tip of the steel tower arm 902.

  Further, when the scaffold device 100 is installed, the wire 201 is bridged between the ladder unit 110 and the scaffold unit 120. Thereby, it can prevent that the load of the scaffold part 120 concentrates on the connection position of the ladder part 110 and the scaffold part 120, and can support the scaffold part 120 stably. In such a state, the worker puts his / her feet on the horizontal rail 112 of the ladder portion 110 of the scaffold device 100 fixed at the attachment target position via the suspension member 113, and the ladder portion 110 is perpendicular to the suspension member 113 side. It can go down to the scaffold part 120 toward the bottom.

  The worker works while standing on the scaffold portion 120. When the scaffold member 121 alone does not reach the work target location, the worker expands the work floor by pulling out the expansion scaffold member 122. Thereby, a wide scaffold can be secured without changing the scaffold device 100.

  In the first embodiment described above, in the scaffold device 100 including the plurality of expansion scaffold members 122, the plurality of expansion scaffold members 122 stacked along the plate thickness direction of the scaffold member 121 are arranged in the vertical direction. However, the present invention is not limited to this. In the scaffold device 100 including the plurality of expansion scaffold members 122, the plurality of expansion scaffold members 122 may be stacked below the scaffold member 121 in the vertical direction. In this case, even when the length-wise dimension of the expansion scaffold member 122 is set to be approximately the same as the length-direction dimension of the field member, the expansion scaffold member 122 remains in a state where the worker is standing on the scaffold member 121. Can be expanded to expand the work floor.

  Alternatively, when the plurality of expansion scaffold members 122 are stacked below the scaffold member 121 in the vertical direction, the dimension in the length direction of the scaffold member 122 for expansion is longer than the dimension in the length direction of the scaffold member 121. May be. Also in this case, the worker can easily grasp the expansion scaffold member 122 while standing on the scaffold member 121, and can slide the expansion scaffold member 122 to expand the work floor.

  In addition, the scaffold device 100 may include a mechanism for interlocking the slides of the respective expansion scaffold members 122 so that the respective expansion scaffold members 122 in the pair of scaffold portions 120 slide evenly. Specifically, for example, a pinion gear is provided on the distal end side of each scaffold member 121, and the surface on the scaffold member 121 side of each expansion scaffold member 122 is linear along the length direction of the expansion scaffold member 122. Rack gears are provided (all are not shown). The rack gear meshes with the pinion gear. And the pinion gear provided in each scaffold member 121 is connected by a gear train or a drive wire, and the rotation of one of the pinion gears is transmitted to the other pinion gear by reversing the rotation direction.

  Thereby, each expansion scaffold member 122 in a pair of scaffold part 120 can be slid equally. Then, by sliding each expansion scaffold member 122 evenly in this way, it is ensured that the balance of the center of gravity of the scaffold member 121 varies and the scaffold tilts by expanding only one of the scaffold portions 120. Can be prevented. Thereby, the safety of the worker can be ensured.

  In addition, by sliding the expansion scaffold members 122 in the pair of scaffold portions 120 evenly, it is ensured that the scaffold is tilted without burdening the worker to adjust the balance of the center of gravity of the scaffold member 121. Can be prevented. Thereby, the working efficiency can be improved. Similarly, when the plurality of expansion scaffolding members 122 are provided, the stacked expansion scaffolding members 122 are similarly connected by a pinion gear and a rack gear. Thereby, irrespective of the number of the scaffold members 122 for expansion, each scaffold member 122 for expansion in a pair of scaffold part 120 can be slid equally.

  As described above, the scaffold device 100 according to the first embodiment of the present invention includes the plurality of horizontal rails 112 provided between the pair of columns 111, and one end side in the length direction of the pair of columns 111. The ladder part 110 having the suspension member 113 provided on the ladder part 110 is provided on one side and the other side of the ladder part 110, and one end is connected to the opposite side of the ladder part 110 in the length direction of the ladder part 110. And the other end portion extends in a direction away from the connection position with the ladder portion 110, and includes a scaffold portion 120 including a pair of scaffold members 121 having a substantially plate shape, and the scaffold portion 120 is a pair of scaffolds. Each of the members 121 is provided with an expansion scaffold member 122 having a substantially plate shape that is slidable along the extending direction of the scaffold member 121 with respect to the coupled scaffold member 121. It is a symptom.

  According to the scaffold device 100 according to the first embodiment of the present invention, after the scaffold device 100 is installed, the work floor can be appropriately enlarged during work. Specifically, for example, when lifting the scaffold from the ground to a desired position or when transporting the scaffold device 100, the expansion scaffold member 122 is superimposed on the scaffold member 121 to reduce the volume of the scaffold device 100, The work floor can be expanded during work according to the work environment and the work target location.

  By reducing the volume of the scaffold device 100, it is possible to minimize the area that receives the wind, so that the scaffold device 100 is shaken and unstable due to the wind pressure, thereby reducing the influence of the wind pressure on the scaffold device 100. be able to. On the other hand, by expanding the work floor at the time of work, the safety is lowered or the scaffold is insufficient by working from an scaffold and working in an unstable posture without performing a large-scale replacement work of the scaffold device 100. Therefore, it is possible to avoid that work is stagnant.

  In addition, the number of workers can be increased by expanding the work floor. That is, by expanding the work floor, the number of workers who can stand on one scaffold device 100 can be increased as compared with the case where the work floor is not expanded. And the work efficiency can be improved by increasing the number of workers who can stand on one scaffold device 100.

  Thus, according to the scaffold apparatus 100 of Embodiment 1 concerning this invention, the improvement of a worker's safety | security and work efficiency can be aimed at.

  In addition, the scaffold device 100 according to the first embodiment of the present invention includes a scaffold portion 120 including a plurality of expansion scaffold members 122 stacked along the thickness direction of the scaffold member 121, and each of the expansion scaffold members. You may comprise 122 by providing along the extension direction of the said scaffold member 121 with respect to the scaffold member 122 for an expansion | swelling by the side of the scaffold member 121, and may be comprised.

  According to such a scaffold device 100, the work floor can be expanded step by step in accordance with the work environment and work target location. As a result, the work floor is expanded during work to improve worker safety and work efficiency, and the work floor expansion amount is adjusted so that the area that receives wind is minimized according to the work content. Can be adjusted.

  As a result, the safety of the worker can be further improved and the work efficiency can be further improved.

<Embodiment 2>
(Configuration of scaffold device)
Next, the structure of the scaffold device according to the second embodiment of the present invention will be described. In the second embodiment, the same parts as those in the first embodiment are denoted by the same reference numerals, and description thereof is omitted.

  10-12 is explanatory drawing which shows the structure of the scaffold apparatus of Embodiment 2 concerning this invention. In FIG. 10, the state which looked at the scaffold apparatus of Embodiment 2 concerning this invention from the front is shown. In FIG. 11, the state which looked at the scaffold apparatus of Embodiment 2 concerning this invention from the arrow C direction in FIG. 10 is shown. In FIG. 12, the state which looked at the scaffold apparatus of Embodiment 2 concerning this invention from the arrow B direction in FIG. 10 is shown.

  10-12, the scaffold apparatus 1000 of Embodiment 2 concerning this invention is provided with the ladder part 110, a pair of scaffold part 120, the handrail member 130, and the fall prevention part 1010. As shown in FIG. The fall prevention unit 1010 includes a frame member 1011 and a fall protection net (net-like member) 1012 provided inside the frame member 1011. The frame member 1011 has a rectangular shape surrounding the periphery of the fall protection net 1012. The frame member 1011 is connected to the connecting member 132 on one side extending along the connecting member 132 constituting the handrail member 130.

  The fall protection net 1012 is produced, for example, by knitting a string-like member such as a rope or a wire in a lattice shape so that the square or rhombus eyes can be seen through. Specifically, the fall protection net 1012 can be realized by, for example, a net produced by knitting a thin flexible rope made of nylon in a lattice shape. Or the fall protection net | network 1012 may be specifically implement | achieved by metal meshes, such as a punching metal and an expanding metal, for example.

  The fall prevention unit 1010 is selectively positioned at a storage position where the fall protection net 1012 is stored in the standing surface of the handrail member 130 and a deployment position where the fall protection net 1012 is deployed around the scaffold member 121. Specifically, for example, the frame member 1011 is provided so as to be rotatable (swingable) with the connection position with the connection member 132 as a fulcrum, and the plane surrounded by the frame member 1011 is parallel to the standing direction of the handrail member 130. By positioning the frame member 1011 at the position, the fall protection net 1012 can be stored in the standing surface of the handrail member 130. In this case, the frame member 1011 can be positioned at the unfolded position by rotating (swinging) the frame member 1011 so that the plane surrounded by the frame member 1011 intersects the standing direction of the handrail member 130.

  In a state where the frame member 1011 is positioned at the unfolded position, the frame member 1011 is provided to be inclined so as to be positioned on the upper side in the vertical direction toward the distal end side with respect to the horizontal direction, that is, the plane direction formed by the scaffold member 121 and the expansion scaffold member 122. . Thereby, sufficient strength of the frame member 1011 can be ensured, and even when a heavy object falls on the fall protection net 1012 in a deployed state, the heavy object can be received.

  FIG. 13 to FIG. 16 are explanatory views showing a procedure for expanding the fall prevention unit 1010. As shown in FIGS. 13 to 16, the frame member 1011 is rotated (swinged) with the connection position with the connection member 132 as a fulcrum to position the fall prevention unit 1010 at the storage position (see FIG. 12). , And can be positioned at the unfolded position (see FIGS. 14 to 16).

  The fall prevention unit 1010 may include a support member 1301 that supports the frame member 1011 positioned in the unfolded state. The support member 1301 can be realized by, for example, a rod-like member that is bridged between the frame member 1011 positioned in the unfolded state and the support member 131 of the handrail member 130. By providing the support member 1301, the position of the fall prevention unit 1010 can be fixed.

  The support member 1301 may include a joint 1302 in the middle in the length direction. Accordingly, when the fall prevention unit 1010 is positioned at the retracted position, the support member 1301 can be folded to reduce the volume of the fall storage unit, and the fall prevention unit 1010 can be prevented from hindering work when not in use. it can.

  17-22 is explanatory drawing which shows another structure of the frame member 1011 in the fall prevention part 1010. As shown in FIG. The frame member 1011 in the fall prevention unit 1010 is configured by using a plurality of members as shown in FIGS. 17 to 22 instead of the configuration shown in FIGS. Sometimes it may be assembled. In the configuration shown in FIGS. 17 to 22, a part 1011 a of the frame member 1011 is rotatably connected to the connection member 132 of the handrail member 130, and a part of the frame member 1011 is used when the fall prevention unit 1010 is used. To another part.

  Specifically, for example, as shown in FIGS. 17 to 19, in a state where the part 1011 a connected to the connecting member 132 of the handrail member 130 in the frame member 1011 is connected by covering another part 1011 b. By fixing using a fixing pin 1901 or the like, the positional relationship with another part is fixed to a part of the frame member 1011.

  In this case, instead of the configuration shown in FIGS. 17 to 19, as shown in FIGS. 20 to 22, another part of the frame member 1011 connected to the connection member 132 of the handrail member 130 is replaced with another part. It is good also as a structure connected by covering and screwing. In this case, the frame member 1011 can be maintained in a certain shape by providing a stopper 1701 or the like on the covered side.

  As described above, the frame member 1011 is constituted by a plurality of members, and by improving the handleability of the individual members, the frame member 1011 can be enlarged to ensure a large area of the fall prevention net during deployment. . Thereby, the fall of the materials used for the operation | work done with the scaffold apparatus 1000, such as a volt | bolt, a nut, or a tool, can be prevented reliably.

  In the configurations shown in FIGS. 17 to 19 and the configurations shown in FIGS. 20 to 22, it is preferable to support the frame member 1011 using the support member 1301. Providing the support member 1301 increases the size of the frame member 1011 and increases the area of the fall prevention net at the time of deployment, thereby preventing the material from falling and preventing the fall prevention unit 1010 from being damaged. Can do.

  As described above, in the scaffold device 1000 according to the second embodiment of the present invention, the scaffold portion 120 is provided on the scaffold member 121, and the handrail member 130 standing from the plate surface formed by the scaffold member 121, and the expansion device. And a handrail member 130 that is provided on the scaffold member 122 and stands up from a plate surface formed by the expansion scaffold member 122.

  According to the scaffold device 1000 according to the second embodiment of the present invention, since the handrail member 130 is provided on the scaffold member 121 and the expansion scaffold member 122, the work floor is expanded at the same time as the work, and at the same time, the expanded portion is also securely attached. The handrail member 130 can be disposed on the side. Thereby, for example, when the handrail member 130 is provided separately from the scaffold portion 120, the installation work of the handrail member 130 which is necessary can be made unnecessary, and the work efficiency can be improved.

  Further, for example, if the handrail member 130 is provided separately from the scaffold portion 120, there is a concern that the handrail member 130 may be forgotten to be transported, or that only the work floor may be expanded to forget the installation of the handrail member 130. However, according to the scaffold device 1000 of the second embodiment of the present invention, a portion where the handrail member 130 is not installed is prevented from being generated, and the safety of the worker is improved in all the scaffolds provided by the scaffold device 1000. Can be secured.

  Further, the scaffold device 1000 according to the second embodiment of the present invention includes a mesh member, and stores the mesh member in a standing surface of the handrail member 130, and deploys the mesh member along the handrail member 130. And an unfolding position, and a fall prevention unit 1010 positioned at the position.

  According to the scaffold device 1000 according to the second embodiment of the present invention, after the scaffold device 1000 is installed, the fall prevention unit 1010 can be positioned at the unfolded position when necessary according to the work environment. Specifically, for example, when lifting the scaffold from the ground to a desired position or transporting the scaffold apparatus 1000, the fall prevention unit 1010 is positioned at the storage position to reduce the volume of the scaffold apparatus 1000, and The fall prevention unit 1010 can be positioned at the deployment position as appropriate according to the work target location.

  By reducing the volume of the scaffold device 1000, the area that receives the wind can be minimized, so that the scaffold device 1000 sways and collides with the surroundings due to the wind pressure swaying the scaffold device 1000, the steel tower 901, and other equipment. Thus, it is possible to reduce the influence of the wind pressure on the scaffold device 1000. On the other hand, by appropriately positioning the fall prevention unit 1010 at the unfolded position according to the work environment and the work target location, it is possible to reliably prevent the materials used for the work performed by the scaffold device 1000, such as bolts, nuts, and tools. be able to.

  Thus, according to the scaffold apparatus 1000 of the second embodiment of the present invention, it is possible to further improve the safety of workers and further improve the work efficiency.

<Embodiment 3>
Next, a scaffold device according to a third embodiment of the present invention will be described. In the third embodiment, the same parts as those in the first and second embodiments are denoted by the same reference numerals, and description thereof is omitted. 23 and 24 are explanatory views showing a scaffold device according to Embodiment 3 of the present invention. 23 and 24 show a state in which the scaffold device according to the third embodiment of the present invention is viewed from the front.

  23 and 24, the scaffold device 2300 according to the third embodiment of the present invention includes a ladder section 110 and a pair of scaffold sections 120. Each scaffold member 121 in the pair of scaffold sections 120 is rotatably connected to the ladder section 110. Specifically, each scaffold member 121 is connected to an end portion of a support member 131 provided on the opposite side of the ladder member 110 from the suspension member 113 via a shaft member 2301, whereby the shaft member 2301 is attached. It can be rotated as a rotation center.

  Each of the pair of scaffold members 121 rotates about the shaft member 2301 that is a connection position with respect to the ladder portion 110, so that the extending direction of the pair of scaffold members 121 is in the length direction of the ladder portion 110. It is selectively positioned at a first position that is in a parallel state or a second position that is in a state in which the pair of scaffold members 121 extends in opposite directions. The pair of scaffold members 121 are positioned at the second positions, for example, when the scaffold is lifted from the ground to a desired position or when the scaffold device 2300 is transported.

  The scaffold device 2300 according to the third embodiment of the present invention may include the fall prevention unit 1010 according to the second embodiment. In this case, the fall prevention unit 1010 is attached to each scaffold unit 120. Thereby, also when the fall prevention part 1010 is provided, the said scaffold part 120 can be rotated, without the said fall prevention part 1010 interfering.

  As described above, in the scaffold device 2300 according to the third embodiment of the present invention, the pair of scaffold members 121 is extended from the pair of scaffold members 121 with the connection position with respect to the ladder portion 110 as the rotation center. Rotation is possible between a first position where the direction is parallel to the length direction of the ladder portion 110 and a second position where the pair of scaffolding members 121 extends in opposite directions. It is characterized by being provided.

  According to the scaffold device 2300 of the third embodiment of the present invention, for example, when the scaffold device 2300 is not used for work, such as when the scaffold is lifted from the ground to a desired position or when the scaffold device 2300 is transported, By positioning the part 120 at the first position, the volume of the scaffold device 2300 can be reduced. As a result, it is possible to further reduce the influence of the wind pressure on the scaffold device 2300, such as when the scaffold device 2300 is shaken and unstable due to the wind pressure during lifting.

  In addition, since the influence of the wind pressure on the scaffold device 2300 can be further reduced, even when the scaffold device 2300 is replaced, the scaffold device 2300 is prevented from shaking and becoming unstable due to the wind pressure. It is possible to reduce the burden on workers involved in the replacement work.

  As described above, the scaffold device according to the present invention is useful for a scaffold device installed at the time of work, and is particularly suitable for a scaffold device used for work performed at an extremely high position such as a strait crossing tower.

DESCRIPTION OF SYMBOLS 100 Scaffolding device 110 Ladder part 111 Post 112 Side rail 113 Hanging member 120 Scaffolding part 121 Scaffolding member 122 Expansion scaffolding member 123 Roller 130 Handrail member 131 Support member 132 Connecting member 133 Brace member 401 Lock mechanism 402 Through hole 403 Lock pin 1000 Scaffolding Device 1010 Fall prevention unit 1011 Frame member 1012 Fall protection net 2300 Scaffolding device

Claims (5)

A ladder unit including a plurality of horizontal rails provided between the pair of columns, and a suspension unit provided with a suspension member provided on one end side in the length direction of the pair of columns;
Provided on one side and the other side of the ladder part, one end is connected to the side opposite to the suspension member in the length direction of the ladder part, and the other end is separated from the connection position with the ladder part. A scaffolding portion comprising a pair of scaffolding members that extend in a direction to form a substantially plate shape;
With
The scaffold portion is connected to each of the pair of scaffold members, and is an extension scaffold having a substantially plate shape provided to be slidable along the extending direction of the scaffold member with respect to the connected scaffold members. A scaffold device comprising a member.   A plurality of the extension scaffold members are stacked along the plate thickness direction of the scaffold member, and each is provided to be slidable along the extension direction of the scaffold member with respect to the extension scaffold member on the scaffold member side. The scaffold device according to claim 1, wherein the scaffold device is provided.   Each of the pair of scaffold members has a first position where the extending direction of the pair of scaffold members is parallel to the length direction of the ladder portion, with the connection position with respect to the ladder portion as a rotation center. The scaffold device according to claim 1 or 2, wherein the scaffold device is provided so as to be rotatable between a second position where the pair of scaffold members extends in opposite directions. The scaffold part is
A handrail member provided on the scaffold member and standing from a plate surface formed by the scaffold member;
A handrail member provided on the expansion scaffold member and standing from a plate surface formed by the expansion scaffold member;
The scaffold device according to any one of claims 1 to 3, further comprising:   It has a net-like member, and has a fall prevention part positioned at a storage position where the net-like member is stored in an upright surface of the handrail member and a deployment position where the net-like member is deployed along the handrail member. The scaffold device according to claim 4, wherein

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