JP6694774B2 - Scaffolding for scaffolding - Google Patents

Description

The present invention relates to a scaffolding device for scaffolding, and more particularly to a skirting device which can be easily mounted and can be firmly mounted.

Conventionally, a scaffolding structure that is temporarily installed at a construction site, etc. forms a working floor for work in high places with scaffolding plates that are laid on side-by-side horizontal members, but tools, bolts, nuts, etc. In order to prevent the risk of equipment and the like falling into the outer space, it is known to erect a skirting board along the side edge of the scaffold plate facing the outer space.

By the way, in order to enable quick and easy attachment of the skirting board, as proposed by the applicant by the following patent documents, both ends of the skirting board body are provided with a jaw portion that engages with a transverse member, respectively. In the configuration provided with the above catching means, at least one of the catching means may be constituted by a movable catching means that is moved back and forth between a retracted position not engaged with the horizontal member and a forward position engaged with the horizontal member. preferable.

JP, 2011-1704, A JP, 2011-6839, A JP 2012-140857 A

The movable catch means of the skirting board device proposed by the above-mentioned patent document is a movable catch means in a state in which the jaw is retracted to face the horizontal member, and then the jaw member is moved forward to be engaged with the horizontal member. And the skirting board body are mutually locked with a lock pin.

Therefore, it was considered that there is an advantage that the work of engaging the jaw portion with the horizontal member is simple and easy, and the work can be performed with bare hands without using a tool.

However, these days, operators who build scaffolds prefer not to use bare hands, prefer to use power tools such as impact wrenches and impact drivers, etc. It is desired to provide an apparatus configured as described above.

By the way, when the movable catch means of the skirting board device is configured to be advanced by the electric tool from the retracted position to the advanced position, the electric tool is bulkier and heavier than the manual tool, so that it is easy to use. It is necessary to devise so that. Further, since the electric tool has a large tightening torque and it is difficult to set the timing for stopping the driving, there is a high possibility that an excessive tightening force is applied, and it is necessary to recognize the problem in this respect.

In view of the above, the present invention relates to the structure of the movable catch means, in which the power tool is easy to use, the driving force of the power tool is preferably transmitted to the jaw, and an excessive tightening torque is applied. An object is to provide a skirting board device configured to withstand even when received.

Therefore, the present invention is configured as a means of a skirting board main body that is erected along the side edge of a scaffolding board that is erected on side-by-side horizontal members and that has an eaves portion above the standing wall portion. 1. A skirting board device comprising catching means at both ends, the jaws engaging with the horizontal member, wherein at least one catching means has a retracted position in which the jaws are not engaged with the horizontal member and a horizontal member. The movable catch means is configured to be moved back and forth between forward positions that are engaged with the movable catch means, and the movable catch means is configured by a movable plate that integrally connects the jaws, and an actuator that drives the movable plate, The movable plate is slidably superposed on the upright wall portion of the skirting board main body, and is pivotally connected to the upright wall portion via a pivot shaft located above the jaws, and the movable plate is attached to the upright wall portion of the pivot shaft. It is configured to move the jaw part forward and backward by rotating around, and the actuator is composed of a headed bolt screwed into a nut fixed to the upright wall part of the skirting board main body. With the head facing the opening window formed in the eaves at a position spaced from the end of the skirting body, the axis of the bolt is arranged diagonally from the opening window toward the jaw, It is a point that a driven body having a passive surface for abutting the tip end portion of the bolt is provided on the plate surface of the movable plate at a position intersecting the axis line of the bolt toward the jaw.

In a preferred embodiment of the present invention, when the movable plate is rotated to position the jaw portion at a forward position where the jaw member is engaged with a horizontal member, the axis line of the bolt is a circle around the pivot axis. Is located on the tangent line to the jaw, and the passive surface of the driven body is formed to be orthogonal to the axis.

According to the present invention, the axis X of the actuator 24 is inclined upward in a direction in which the axis X gradually separates from the end portion of the skirting board device 6, so that the operator can move from the open space above the central region of the skirting board device 6. By using the electric tool toward the bolt head 26a, the work of attaching the skirting board device 6 can be easily performed.

At this time, the axis X of the actuator 24 is located on the tangent line of the circumference C centered on the pivot 17 of the movable plate 16 and extends toward the jaw 11, and the passive surface of the driven body 18 with respect to the axis X. Since 18a are formed so as to be orthogonal to each other, the pushing force of the actuator 24 can be efficiently transmitted to the driven body 18.

In particular, when the movable plate 16 is set to the operating posture P2, the jaw portion 11 (12) is engaged with the horizontal member 3, and the actuator 24 is further driven by excessive driving of the electric tool, the movable plate 16 is In the plate-shaped portion that is cantilevered by fixing the pivot 17 and the jaw 11 at two points, the driven body 18 receives the load toward the axis X, but the load in the direction of the axis X is the jaw on the fixed side. Since the area near 11 can endure by supporting from the opposite direction, there is an advantage that the movable plate 16 is less likely to be damaged.

It is a perspective view showing the state where the skirting board apparatus concerning one embodiment of the present invention was attached to the scaffold construction body. It is a perspective view showing a skirting board device. It is a perspective view which shows the components of a skirting board main body and a movable catch means of a skirting board device in an exploded state. It is a front view which shows the effect | action of a movable catch means. The attachment method of a skirting board apparatus is shown, (A) is a front view which shows the state before attachment, (B) is a front view which shows the state in the middle of attachment, (C) is a front view which shows the state after attachment. The action of the movable catch means is shown, (A) is a front view showing the action of the present invention, and (B) is a front view showing the action of the comparative example.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the drawings.

(overall structure)
FIG. 1 shows a temporary scaffold that adopts a wedge-tightened structure as an example of the scaffolding structure. The pillars 1 are fixedly provided with flanges 2 at predetermined intervals at the upper and lower sides, and are erected at predetermined intervals in a direction along an outer wall of a building or the like (hereinafter referred to as "girder direction"), and Similar struts 1 are erected in a perspective direction (hereinafter, referred to as "gable direction") with respect to outer walls such as. Therefore, the horizontal member 3 is erected between the columns 1 corresponding to the endwise direction and fixed by the fastening means 4.

In the case of the illustrated example, the binding means 4 is wedge-coupled by fitting a forked bracket fixed to the end of the horizontal member 3 to the flange and driving the wedge member 4a, but it is not always necessary. The configuration is not limited to this.

In this way, the scaffolding plate 5 is erected on the horizontal members 3 and 3 arranged side by side in the girder direction, thereby forming a work floor. At this time, the scaffolding plate 5 is locked and fixed by engaging hook means projecting in the girder direction from both ends with the horizontal member 3.

The skirting board device 6 is configured to be erected from the working floor of the scaffolding board 5 along the side edge facing the outer space, and is provided with catching means 8 at both ends of the skirting board body 7, respectively. The jaw portion formed at the lower end portion of the rigid member 9 provided in the catch means 8 is attached and fixed by engaging the horizontal member 3 with the jaw portion.

In the case of the illustrated embodiment, as shown in FIG. 2, the rigid member 9 of each catch means 8 is formed by bending a relatively thick metal plate into a groove-shaped cross section, and forms a groove-shaped bottom wall. By extending a pair of side walls 10a, 10b formed on both sides of 10 downward, a first jaw part 11 facing the inside of the hook means of the scaffolding plate 5 and a second jaw part 12 facing the outside of the hook means of the scaffold plate 5 with respect to the girth direction. Are installed side by side.

The first jaw 11 is configured to embrace the peripheral surface of the horizontal member 3 from above and below by the upper jaw 11a and the lower jaw 11b forming the arcuate recess, but the second jaw 12 has the upper jaw 12a wedged. It is formed to be short so as not to interfere with the member 4a, and is configured such that the upper jaw 12a and the lower jaw 12b hold the peripheral surface of the horizontal member 3 from above and below in an incomplete state.

(Baseboard body)
As shown in FIGS. 2 and 3, the skirting board body 2 is provided with a strip-shaped standing wall portion 13 formed of a relatively thin metal plate so as to be lightweight, and an upper edge portion of the standing wall 13 is provided at the upper edge portion thereof. It is reinforced by providing eaves 14 along which it is bent towards the outer space of the scaffolding construction.

In the case of the illustrated embodiment, by providing the tread plate 15 extending from the lower edge of the standing wall portion 13 toward the working floor of the scaffolding construction, and by stacking the tread plate 15 on the floor surface of the scaffolding plate 5, Although it is configured to close the gap between the scaffolding plate 5 and the standing wall 13, it is not essential.

(Movable catch means)
Therefore, at least one of the catching means 8, 8 provided at both ends of the skirting board main body 7 has a retracted position in which the jaws 11 and 12 together with the rigid member 9 are not engaged with the cross member 3. And movable catching means 8A that is moved back and forth between the forward positions where it engages with the horizontal member 3. The movable catching means 8A may be configured for both the catching means 8 and 8, but in the illustrated embodiment, only one catching means 8 constitutes the movable catching means 8A, and therefore the other catching means 8A. The fixed catch means 8B is configured by fixing the rigid member 9 having the jaws 11 and 12 to the skirting board body 7.

As shown in FIGS. 2 and 3, the movable catch means 8A is formed of a thick metal plate having rigidity, and the movable plate 16 integrally connected with the rigid member 9 and an actuator for driving the movable plate 16. It is composed of 24.

The movable plate 16 is slidably superposed on the upright wall portion 13 of the skirting board body 7, and is pivotally connected to the upright wall portion 13 via a pivot 17 located above the jaws 11 and 12. By rotating the movable plate 16 around the pivot 17, the jaws 11 and 12 are moved back and forth.

In the illustrated embodiment, the movable plate 16 is fixed to the side edge of the widthwise central portion of the base wall 10 of the rigid member 9 by welding or the like, and is inclined downward to the upper edge extending from the base wall 10. A slant edge 16a is formed, and a driven body 18 having a passive surface 18a along the slant edge 16a is fixed by welding or the like. The driven body 18 is preferably formed of a metal block that constitutes a heavy object, and is firmly fixed to the movable plate 16 by welding or the like, and also has a function as a weight.

The pivot 17 is located between the passive surface 18a and the base wall 10 and is disposed above the passive surface 18a, and supports the movable plate 16 through a shaft hole 19.

Guide holes 20 and 21 that draw an arc around the shaft hole 19 are formed in the vicinity of the lower edge of the movable plate 16 and in the vicinity of the bevel 16a, and the standing wall portion 13 of the skirting board body 7 is formed. Guide pins 22 and 23 such as bolts protruding from are inserted.

Therefore, the movable plate 16 is rotatably supported by the pivot shaft 17 in a state of being stacked on the upright wall portion 13, and normally, as shown in FIG. 4, the jaw portions 11 and 12 are retracted, It is in a standby posture P1 in which the rigid member 9 is suspended from the pivot 17 in a tilted state. From this state, the movable plate 16 is rotatable in the direction in which the jaws 11 and 12 are advanced, as shown by the chain line in the figure, and is rotated while guiding the guide holes 20 and 21 to the guide pins 22 and 23. When the jaws 11 and 12 are moved forward, the operating posture P2 is engaged with the horizontal member 3.

The actuator 24 is composed of a headed bolt 26 screwed into a nut 25 fixed to the standing wall portion 13 of the skirting board body 7, and a head 26 a of the bolt 26 is separated from an end portion of the skirting board body 7. It faces the opening window part 27 formed in the eaves part 14 in the notched position, and as shown in FIG. 4, the axis X of the bolt shaft part 26b is directed from the opening window part 27 toward the jaw part 11. It is arranged diagonally. In the illustrated embodiment, a retaining nut 28 is screwed to the insertion end of the bolt shaft portion 26b inserted from the nut 25, and the tip of the bolt shaft portion 26b is inserted from the retaining nut 28. I am letting you.

In order to attach and fix the actuator 24 to the skirting board body 7, a metal attachment plate 29 is fixed to the nut 25 by welding or the like, and the attachment plate 29 is fixed to the standing wall portion 13 by bolts or the like.

A reinforcing plate 30 is superposed on the opposite side of the standing wall portion 13 of the skirting board body 7, that is, the side surface facing the scaffolding plate 5, and the standing wall portion 13 is sandwiched by the reinforcing plate 30 and the mounting plate 29. In this state, they are fixed in a sandwich by bolts and nuts. Further, the pivot 17 and the guide pins 22 and 23 are configured by the bolts inserted from the mounting plate 29 with the standing wall portion 13 being sandwiched between the mounting plate 29 and the movable plate 16.

As shown in FIG. 4, the mutual relationship between the movable plate 16 and the actuator 24 is such that the passive surface 18a of the driven body 18 on the plate surface of the movable plate 16 intersects the axis X of the bolt shaft 26b toward the jaw 11. The tip of the bolt shaft portion 26b is brought into contact with the passive surface 18a.

Then, as shown in FIG. 6A, the mutual relationship between the bolt shaft portion 26b and the passive surface 18a is a forward movement in which the jaw portion 11 (12) is engaged with the horizontal member 3 by rotating the movable plate 16. In the state of being located in the position, the axis line X of the bolt shaft portion 26b is located on the tangent line of the circumference C about the pivot shaft 17 and extends toward the jaw portion 11 and is passive with respect to the axis line X. The surface 18a is configured to be perpendicular to each other.

(Installation method and function)
FIG. 5 shows a method for attaching the skirting board device 6 to the horizontal members 3 and 3 in a standing state. Before attachment, as shown in FIG. 5A, the bolt 26 of the actuator 24 is screwed back from the nut 25, and the tip of the bolt shaft portion 26b is retracted from the passive surface 18a of the driven body 18 to move the movable plate 16 Is in the standby posture P1. As described above, when the pressing force is not acting on the passive surface 18a, the movable plate 16 is held in the standby posture P1 by the weight balance between the rigid member 9 and the driven body 18 having a weight function, and the pivot 17 is held. Is hung on.

By setting the movable plate 16 in the standby posture P1, the distance between the jaws 11 and 12 of the movable catching means 8A and the jaws 11 and 12 of the fixed catching means 8B is larger than the distance between the horizontal members 3 and 3 arranged in parallel. Since it is also small, it can be inserted between the horizontal members 3, 3 as shown in FIG. 5 (B). Therefore, the jaws 11 and 12 of the fixed catch means 8B are engaged with the horizontal member 3 with the movable plate 16 of the movable catch means 8A in the standby posture P1.

Then, as shown in FIG. 5 (C), with the jaws 11 and 12 of the movable catching means 8A facing the cross member 3, the bolt head of the actuator 24 is driven from above the skirting board device 6 with an electric tool. When the screw shaft 26a is driven and rotated, the tip of the bolt shaft portion 26b that is screwed forward pushes the passive surface 18a of the driven body 18 to rotate the movable plate 16 to the working posture P2, thereby moving the jaw portion forward. 11 and 12 are engaged with the cross member 3, whereby the work of attaching the skirting board device 6 is completed.

Since the axis line X of the actuator 24 is inclined upward in a direction in which it gradually separates from the end portion of the skirting board device 6, the operator uses the electric tool from above the central region of the skirting board device 6 to bolt the head 26a. Easy to use. That is, since the strut 1 of the scaffolding structure faces the end of the skirting board device 6 and a brace or the like (not shown) is fixed to the strut 1, the vicinity of the rigid member 9 of the movable catch means 8A. While it is difficult to work with the electric power tool directed, the work with the electric power tool is easy because a wide open space is formed above the central area of the skirting device 6.

In addition, a heavy power tool is easier to hold and easier for the operator to operate when operated in an inclined downward position than when operated in a vertically downward position.

By the way, when the actuator 24 is driven by the electric tool, the bolt shaft portion 26b pushes the driven body 18 of the movable plate 16 toward the axis X, thereby rotating the movable plate 16 to the operating posture P2. ..

(Comparative example)
FIG. 6B shows a comparative example with respect to the present invention, in which the actuator 24 is arranged with the axis X oriented in the vertical direction, and the movable plate 16 moves the passive surface 18 a of the driven body 18 to the axis X. It is provided at the position intersecting with. In the case of the comparative example, in addition to the drawback that the electric tool is not easy to use as described above, the transmission efficiency of the pushing force from the actuator 24 to the movable plate 16 is not good, and the load acting on the movable plate 16 is not good. Is a big problem.

Also in the comparative example, it is possible to move the movable plate 16 to the working posture P2 by driving the actuator 24 and pushing the driven body 18 via an electric tool, but as shown in the drawing, the pivot 17 is moved. The axis line X, which is located on the tangent line of the circumference C with respect to the center, is in a relationship of being largely separated from the circumference C in the pushing direction. Therefore, the pushing force of the actuator 24 that moves forward in the direction of the axis X is not efficiently transmitted to the driven body 18.

It is known that the power tool is difficult to stop and is usually driven excessively until it is overtightened. Therefore, as shown in the drawing, the movable plate 16 is set to the operating posture P2, and the actuator 24 may be further driven after the jaw 11 (12) is engaged with the horizontal member 3. When receiving such overdriving, the movable plate 16 is cantilevered by a plate-shaped portion on which the pivot 17 and the jaw 11 are fixed and the driven body 18 is provided. However, in the case of the comparative example, since the axis X of the actuator 24 is in the vertical direction, when the driven body 18 is strongly pushed downward along the axis X by the overdriving of the electric tool, the plate supported in a cantilever manner. Since the shaped portion is not supported in the opposite direction of the axis line X, there is a high possibility of damage such as distortion.

(Invention)
The operation of the present invention with respect to the comparative example is shown in FIG. As shown in the drawing, the axis X located on the tangent to the circumference C about the pivot 17 should be largely separated from the circumference C in the pushing direction as in the comparative example. There is no. Moreover, the passive surface 18a of the driven body 18 is arranged so as to be perpendicular to the axis line X and perpendicular thereto. Therefore, the pushing force of the actuator 24 moving forward in the direction of the axis X can be efficiently transmitted to the driven body 18.

As shown in the drawing, even when the movable plate 16 is set to the working posture P2 and the jaw 11 (12) is engaged with the horizontal member 3, the electric tool is further overdriven and the actuator 24 is driven. As in the example, the movable plate 16 is unlikely to be damaged. The movable plate 16 is cantilevered on a plate-shaped portion on which the pivot 17 and the jaw 11 are fixed and the driven body 18 is provided, while the axis X of the actuator 24 is fixedly supported. Extending toward the jaw 11. Therefore, when the driven body 18 is strongly pushed downward along the axis X due to overdriving of the electric power tool, the load acting on the cantilever-supported plate-like portion is due to the area near the fixed jaw 11. Since it is supported from the opposite direction, it can bear the load and is less likely to be damaged.

In the case of the illustrated embodiment, the actuator 24 is supported by the reinforcing plate 30 via the mounting plate 29, and the movable plate 16 is supported by the reinforcing plate 30 via the pivot shaft 17 and the guide pins 22 and 23. Even when loads of the movable plate 16 and the movable plate 16 in the opposite directions are applied, there is no risk of damaging the standing wall portion 13 of the skirting board body 7 made of a thin metal plate, and the reinforcing plate 30 can withstand.

When disassembling the scaffolding structure or the like, when the skirting board device 6 is removed from the horizontal member 3, the bolts 26 of the actuator 24 are retracted to bring the movable plate 16 into the standby posture P1 and to move the movable catch means 8A sideways. The engagement with the frame 3 is released, and the baseboard device 6 may be removed in the reverse manner to the above. At this time, even if the actuator 24 is retracted by overdriving the electric tool, the bolt 26 will not be pulled out if the retaining nut 28 is provided.

1 Support 2 Flange 3 Horizontal Member 4 Tightening Means 4a Wedge Member 5 Scaffolding Board 6 Baseboard Device 7 Baseboard 8 Catch Means 8A Movable Catch Means 8B Fixed Catch Means 9 Rigid Member 10 Base Wall 10a, 10b Side Wall 11 First Jaw Part 11a Upper jaw 11b Lower jaw 12 Second jaw 12a Upper jaw 12b Lower jaw 13 Standing wall portion 14 Eaves portion 15 Step plate 16 Movable plate 16a Beveled edge 17 Axis 18 Driven body 18a Passive surface 19 Shaft holes 20, 21 Guide holes 22, 23 Guide pins 24 Actuator 25 Nut 26 Bolt with Head 26a Head 26b Bolt Shaft 27 Opening Window 28 Lockout Nut 29 Mounting Plate 30 Reinforcing Plate

Claims (2)

At both ends of the baseboard main body (7), which is erected along the side edge of the scaffolding board laid on the side-by-side horizontal material and has the eaves (14) at the upper part of the standing wall (13). A skirting board device provided with catching means (8) (8) having jaws (11, 12) engaging with the cross member,
At least one of the catching means constitutes a movable catching means (8A) that can be moved forward and backward between the retracted position where the jaw is not engaged with the horizontal member and the forward position where it is engaged with the horizontal member,
The movable catch means (8A) is composed of a movable plate (16) integrally coupled with the jaws (11, 12) and an actuator (24) for driving the movable plate,
The movable plate (16) is slidably superposed on the standing wall portion (13) of the skirting board main body, and is pivotally connected to the standing wall portion via a pivot shaft (17) located above the jaws. And is configured to move the jaws forward and backward by rotating the movable plate around the pivot.
The actuator (24) is composed of a headed bolt (26) screwed into a nut fixed to the standing wall portion (13) of the skirting board main body, and the head (26a) of the bolt is attached to the skirting board main body. While facing the opening window part (27) formed in the eaves at a position separated from the end, the axis line (X) of the bolt is slanted from the opening window part (27) toward the jaw part (11). Has been placed,
On the plate surface of the movable plate (16), at a position intersecting the axis (X) of the bolt toward the jaw, a driven body (18) having a passive surface (18a) for abutting the tip of the bolt A scaffolding device for scaffolding, comprising: With the movable plate (16) being rotated to position the jaw in the forward position where the jaw is engaged with the horizontal member, the axis (X) of the bolt is a circle centered on the pivot (17). It is formed on the tangent line of the circumference (C), extends toward the jaw (11), and is formed so that the passive surface (18a) of the driven body is orthogonal to the axis (X). The scaffolding skirting device according to claim 1, which is characterized in that.

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