JP5986405B2 - Strengthening device for scaffold construction - Google Patents

Description

In the temporary scaffold for constructing the upper working floor from the lower working floor by sequentially connecting the supporting pillar members upward and mounting the scaffolding plate on the horizontal member laid between the supporting pillar members. The present invention relates to a strengthening device that strengthens the horizontal member by supporting it from below.

A temporary scaffold constructed at a construction site or the like sequentially connects a pair of strut members facing in the wife direction upward, and arranges one pair of the pair of strut members at an interval in the girder direction, A horizontal member is installed on a pair of support members, and a work floor extending in the girder direction is formed by mounting a scaffolding plate on the horizontal member, and an upper work floor is sequentially constructed from a lower work floor.

JP-A-5-44338

In the scaffold construction as described above, the load of an operator or the like traveling on the work floor is supported by a horizontal member on which a scaffold plate is mounted. However, since the horizontal member has a construction structure in which the fastening means at both ends of the horizontal member are fixed to the pair of support members, the horizontal member is fatigued or when an unexpectedly large load is applied. In some cases, the horizontal member may be deformed in the buckling direction. In addition, for example, if the scaffold structure swings due to strong wind, etc., and the support force of the horizontal member that supports the column member from the horizontal direction is reduced and the connecting portion of the upper and lower column members is distorted, the column member is in a vertical posture May not be held and may be deformed in the bending direction. Therefore, in order to solve such a problem, it is desirable to strengthen the support structure of the horizontal member.

According to Patent Document 1, a reinforcing cane material is swingably connected to a scaffold plate, and the scaffold plate is mounted so as to be horizontal on a horizontal member, and then the lower end portion of the reinforcing cane material. There has been proposed a technique for locking the frame at a position below the support member.

However, according to the knowledge of the present inventor, it is necessary to strengthen the support structure of the horizontal member in order to solve the above problem. Therefore, it does not make sense to reinforce the scaffolding plate as in the technique proposed by Patent Document 1. In particular, since the reinforcing cane material is swingably provided on the scaffold plate, a rigid body structure cannot be formed after attachment.

In addition, in the scaffold structure that builds the upper work floor from the lower work floor in sequence, the horizontal members are also attached in order from the lower layer to the upper layer, so that the reinforcement work of the horizontal member can be performed from the lower layer side. Must be configured. In this regard, the technique proposed in Patent Document 1 has a reinforcing cane member suspended from the scaffolding plate, which requires work from both the upper layer and the lower layer, resulting in poor workability.

In general, temporary scaffolds are reinforced with diagonal materials such as braces between strut members adjacent to each other in the girder direction, but between a pair of strut members facing the wife direction, Since there are no other reinforcing materials such as diagonal materials, there is a need to strengthen this part, and it is desirable to meet such needs.

The present invention provides a strengthening device that solves the above-described problems, that is, a device that reinforces the support structure of the horizontal member, and the strengthening device of the present invention is a horizontal structure that is constructed between strut members. By supporting the material from the inside position of the binding members at both ends toward the lower position of the support member, a construction support point with a narrow interval is formed, thereby greatly improving the bending strength of the horizontal material. The rigid body structure is formed between the horizontal member and the support member. Moreover, the work for strengthening the horizontal member can be easily performed from the lower work floor to the upper horizontal member.

Therefore, the present invention is configured as a means, sequentially connecting a pair of strut members facing in the wife direction facing upward, and arranging one pair of the pair of strut members at intervals in the girder direction, A temporary scaffold that constructs a work floor extending in the girder direction by installing a horizontal member on the pair of support members and mounting a scaffolding plate on the horizontal member, and sequentially constructing an upper work floor from a lower work floor The reinforcing device strengthens the horizontal member by supporting the horizontal member from below, and the reinforcing device includes an intermediate part in the longitudinal direction of the horizontal member and a lower part of the column member extending downward from the horizontal member. A brace member extending obliquely, and an upper fixing means for fixing the upper end portion of the brace member to the horizontal member and a lower fixing means for fixing the lower end portion to the support member, the upper fixing Means A support body positioned below the horizontal member; a lower jaw means for holding the lower surface of the horizontal member; and an upper jaw means for holding the upper surface; and fixed to the support body by one of the lower jaw means and the upper jaw means A fixed jaw is constructed, and the other is a movable jaw that is movable forward and backward with respect to the horizontal member.
An insertion path provided in the support body in the X-axis direction parallel to the axis of the horizontal member, and a horizontal member with respect to the movable jaw when moved forward in the insertion path by striking with a hammer A fastening means for forming a wedge means comprising a locking piece that generates a pressure contact force toward the top and that allows the upper fixing means to be removed from the horizontal member by releasing the movable jaw when retreated. The tightening means includes the one side (F) and the other side (R) on one side (F) and the other side (R) of the horizontal member located on both sides of the vertical line (V) passing through the center of the horizontal member. ) With respect to the gap (SF) (SR) between the scaffolding plate and the horizontal member facing each other), the fastening means is provided facing the gap (SF) in a state of being deviated to one side (F), A pair of strengthening devices having the same configuration with respect to one horizontal member in a posture reversed with the vertical line as the axis of symmetry. By arranging in a letter shape, the tightening means including the lock piece in one reinforcing device and the tightening means including the lock piece in the other strengthening device face the gap (SF) (SR) on the opposite side. It is in the point which arranges .

At this time, it is preferable to arrange an extension line of the hit portion of the lock piece facing the gap (SF) on the one side (F) toward the side space of the column member, and further, the brace member Is preferably fixed to the support so that its upper end faces the center of the horizontal member.

In the first embodiment of the present invention, the upper fixing means comprises the fixed jaw part by the lower jaw means, the movable jaw part by the upper jaw means, and the upper jaw means facing the other side of the horizontal member. A pivoting means for pivotally pivoting the lower jaw means is provided, and the upper jaw means is pushed down by the tightening means while the horizontal member is held from above and below by the upper and lower jaw means through the rotation of the upper jaw means Thus, the horizontal member is sandwiched by the upper and lower jaw means.

At this time, the fastening means for pushing down the upper fixing means includes socket means provided on the support so as to face the one side of the horizontal member, plug means provided on a free end of the upper jaw means, and the lock piece. The socket means is provided with an insertion path in the X-axis direction parallel to the axis of the horizontal member, and a receiving section that crosses the insertion path, and the plug means is a tongue piece that can be fitted into the receiving section. And a pressed portion facing the insertion path in a state where the tongue piece portion is fitted in the receiving portion, and the lock piece is inserted in a state where the tongue piece portion is fitted in the receiving portion. When moving forward in the road, the upper jaw means is pressed down and pressed against the upper surface of the horizontal member by pressing the pressed portion.

In the second embodiment of the present invention, the upper fixing means constitutes the fixed jaw portion by the upper jaw means and the movable jaw portion by the lower jaw means, and the movable jaw portion is loosely moved by the support body. A swinging portion that is freely held and swingable in a direction toward the lower surface of the horizontal member is provided, and the horizontal member is vertically moved by the upper and lower jaw means through the swinging of the swinging portion of the lower jaw means. In this state, the lower jaw means is pushed up by the tightening means so that the horizontal member is clamped by the upper and lower jaw means.

At this time, the tightening means of the upper fixing means is constituted by socket means provided on a support, a swinging part of the lower jaw means, and the lock piece, and the socket means is parallel to the axis of the horizontal member. An insertion path in the X-axis direction and a receiving portion that crosses the insertion path are provided, and the swinging portion of the lower jaw means is swingably inserted into the receiving portion, forms a pressure contact portion on the upper surface, and has a lower surface. The lock piece is configured to press the pressed portion when the forward movement of the lock piece moves in the insertion path, thereby pressing the pressure contact portion of the lower jaw means to the lower surface of the horizontal member. It is configured.

In the third embodiment of the present invention, an introduction opening is formed in the side portion of the clamping space between the fixed jaw portion constituted by the upper jaw means and the movable jaw portion constituted by the lower jaw means, and the movable jaw portion Is provided with an operating piece extending from the pivotally supported portion supported by the support body to the holding space, and interlockingly connecting the operating piece and the swinging portion via the pivotally supported portion. When the operating piece is pushed by entering the clamping space from the opening, the rocking portion can be moved up in conjunction with the pushing of the working piece, and the rocking portion can be pushed up by the tightening means. It is configured to have a standby posture.

Conventionally, temporary scaffolds have been reinforced with diagonal members such as braces between strut members adjacent in the spar direction, but between the pair of strut members facing in the wife direction, diagonal members in addition to horizontal members. However, according to the present invention, since the horizontal member 4 and the support members 1a and 1b can be rigidized by the reinforcing device 6 in the wife direction, the overall strength of the temporary scaffolding is greatly increased. Can be improved.

At this time, according to the reinforcing device 6 of the present invention, the horizontal member 4 is supported at the lower position of the support members 1a and 1b by the brace member 7 extending obliquely downward from the upper fixing means 8. Therefore, in addition to the support span (equal to the interval between the strut members 1a and 1b), the construction structure of the horizontal member 4 has the fastening means 4a and 4a at both ends installed on the strut members 1a and 1b as construction support points. A support span (substantially equal to the distance L2 shown in FIG. 3) is formed by using the reinforcing devices 6 and 6 as a construction support point, and a construction support point with a narrow support span is provided, so that the bending strength of the horizontal member 4 is increased. It can be greatly improved. In addition, since each reinforcing device 6 is tightened without rattling as described above, a rigid structure is formed between the horizontal member 4 and the support members 1a and 1b to prevent the scaffold structure from shaking due to strong winds or the like. And since it is possible to perform all the attachment work of the reinforcement | strengthening apparatus 6 from a lower layer work floor, work efficiency is good, and it does not unnecessarily narrow the work space S on a lower layer work floor, It is possible to secure a space for the head of the worker who travels through the work space S.
In particular, according to the present invention, a pair of strengthening devices 6 and 6 having the same configuration are arranged in a cross-shaped manner with a vertical line as an axis of symmetry with respect to one horizontal member 4. Accordingly, the tightening means 16 including the lock piece 15a in one reinforcing device 6A and the tightening means 16 including the lock piece 15a in the other reinforcing device 6B are opposite to each other with respect to the perpendicular V passing through the center of the horizontal member 4. When the lock piece 15a is beaten by reciprocating the hammer between the reinforcing devices 6A and 6B. Even if the distance L2 between the two reinforcing devices cannot sufficiently secure the hammer striking stroke, the hammer swung up to strike one lock piece 15a does not interfere with the other lock piece, and the hammer is preferably used. There is an effect that can be used.
At this time, the striking portion of the lock piece 15a facing the gap SF facing the one side F is arranged with the extension line of the striking portion facing the side space of the column member 1, so that the reinforcing device 6 When striking the lock piece 15a by reciprocating the hammer between the strut member 1 and the strut member 1, even if the interval L1 between the reinforcing device 6 and the strut member 1 cannot sufficiently secure the striking stroke of the hammer, There is an effect that the hammer can be used suitably without interfering with the support member 1 .

It is a side view which shows one example of the temporary scaffold provided with the horizontal member reinforced by 1st Embodiment of this invention. It is a side view which illustrates the method of mounting a scaffold board on the horizontal member of a temporary scaffold. It is a side view which shows the state which strengthened the horizontal member by 1st Embodiment of this invention. The upper fixing means of 1st Embodiment is shown, (A) is a front view, (B) is a side view. It is a perspective view which shows the lower fixing means of 1st Embodiment. The upper fixing means of 1st Embodiment is shown, (A) is a perspective view which shows the state which separated the upper fixing means from the lower fixing means, (B) shows the socket means which forms an insertion path and a receiving part. It is a perspective view. It is a front view which shows the method of fixing the upper fixing means of 1st Embodiment to a horizontal member. The upper fixing means of 2nd Embodiment is shown, (A) is a front view, (B) is a side view. The upper fixing means of 2nd Embodiment is shown, (A) is the perspective view shown from one side direction, (B) is the perspective view shown from the other side direction, (C) is the state which lowered | hung the movable jaw part. Sectional drawing shown, (D) is a sectional view showing a state in which the movable jaw is pushed up. The method to fix the upper fixing means of 2nd Embodiment to a horizontal member is shown, (A) is sectional drawing which shows the state which faced the fixing jaw part to the horizontal member, (B) is an upper fixing means. It is sectional drawing which shows the state fixed to the horizontal member. It is a perspective view which shows the upper fixing means of 3rd Embodiment. The upper fixing means of 3rd Embodiment is shown, (A) is a front view, (B) is a side view. The method of fixing the upper fixing means of 3rd Embodiment to the horizontal member is shown, (A) is sectional drawing which shows the state which made the introduction opening part face the horizontal member, (B) is horizontal member. Sectional drawing which shows the effect | action which raises a rocking | swiveling part toward a stand-by posture by pushing an action piece, (C) shows the state which press-contacted the lower jaw means to the lower surface of the horizontal member by the fastening means. It is sectional drawing.

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

FIG. 1 exemplifies a scaffold construction body constituting a wedge-tightened temporary scaffold with a flange. Each column member 1 is fixedly provided with a flange 2 at a predetermined interval in the vertical direction, and the column members are arranged in the vertical direction. A plug-in type connecting means 3 that can be connected is provided. The scaffold structure has a pair of strut members 1a and 1b facing the wife direction facing upward, with the perspective direction with respect to the outer wall W of the building or the like as “wife direction” and the lateral direction along the outer wall W as “girder direction”. Although not shown in the figure, one pair of the pair of support members 1a and 1b is arranged at intervals in the spar direction, and a horizontal member 4 is installed on the pair of support members 1a and 1b. At the same time, by installing the scaffolding plate 5 on the horizontal member 4, a work floor extending in the girder direction is formed, and an upper work floor is sequentially constructed from the lower work floor.

The horizontal member 4 is provided with wedge-tightening means 4a, 4a at both ends, and each of the fastening means 4a is fixed by driving a wedge piece into the flange 2 of the support members 1a, 1b. In addition, the construction method of the horizontal member 4 with respect to the support | pillar members 1a and 1b is not limited to the wedge-tightening type with a flange like the example of a figure, Other forms may be sufficient.

As shown in FIG. 2, the scaffold plate 5 is provided with hooks 5 a with locking lock means at intervals in the wife direction at both ends of the girder direction, and by locking the hooks 5 a to the horizontal member 4. Although not shown in the figure, a work floor is formed by the scaffolding plates 5 arranged in the girder direction. The scaffold plates 5, 5 adjacent in the spar direction are connected in the spar direction by locking the opposing hooks 5 a, 5 a to the same horizontal member 4.

(First embodiment)
1 and 3 to 7 show a reinforcing device 6 according to the first embodiment of the present invention, and the reinforcing device 6 reinforces the horizontal member 4 by supporting it from below.

As shown in FIG. 1, a pair of left and right reinforcing devices 6, 6 are arranged in a C shape with respect to one horizontal member 4. Thereby, the work space S on the lower work floor located below the horizontal member 4 is not unnecessarily narrowed, and the head space of the worker who travels through the work space S can be secured.

A pair of reinforcement | strengthening apparatuses 6 and 6 are mutually the same structure, and as shown in FIG. 1, they are arrange | positioned with the attitude | position reversed by making a perpendicular axis into a symmetrical axis.

Therefore, the reinforcing device 6 includes a brace member 7 that extends obliquely between a midway portion in the axial longitudinal direction of the horizontal member 4 and a lower portion of the column member 1 that extends downward from the horizontal member 4, and An upper fixing means 8 for fixing the upper end portion of the brace member 7 to the horizontal member 4 and a lower fixing means 9 for fixing the lower end portion to the support member 1 are provided.

(Configuration of upper fixing means)
As shown in FIGS. 4 and 6, the upper fixing means 8 includes a support body 10 located below the horizontal member 4, a lower jaw means 11 for holding the lower surface of the horizontal member 4, and an upper jaw means for holding the upper surface. 12, a fixed jaw portion 13 a fixed to the support 10 by the lower jaw means 11, and a movable jaw portion 14 a movable forward and backward with respect to the horizontal member 4 by the upper jaw means 12. Tightening means 16 having a locking piece 15 a that presses the movable jaw 14 a against the horizontal member 4 by being inserted between the movable jaw 14 a and the support 10 is provided.

A downward U-shaped bracket 17 is fixed to the lower surface of the support 10, and the upper end of the brace member is arranged in such a manner that the upper end of the brace member 7 faces the center of the horizontal member 4. Is fixed to the bracket 17 by welding or the like.

As shown in FIG. 4A, the reinforcing device 6 includes the tightening means 16 with respect to one side F and the other side R of the horizontal member located on both sides of the vertical line V passing through the center of the horizontal member 4. The support 10 is displaced so as to face one side F, and is deviated so as to face the other side R so that the upper jaw means 12 is pivotally connected to the lower jaw means 11 so as to pivot. A binding means 18 is provided, and the upper jaw means 12 is pushed down by the fastening means 16a while the horizontal member 4 is held from above and below by the upper and lower jaw means 12 and 11 through the rotation of the upper jaw means 12, It is comprised so that the horizontal member 4 may be clamped.

As shown in FIG. 6, the tightening means 16 includes a socket means 19a provided on the support 10, a plug means 20 provided at a free end of the upper jaw means 12, and the lock piece 15a.

As shown in FIG. 6B, the socket means 19a is configured by a member having a U-shaped cross section, and crosses the insertion path 21a in the X-axis direction parallel to the axis of the horizontal member 4 and the insertion path 21a. A receiving portion 22 a is formed and is fixed inside the support 10. In addition, both ends of the insertion path 21a form openings 23a and 23a by window holes penetrating both side walls of the support 10.

The plug means 20 includes a tongue piece portion 24 that can be fitted into the receiving portion 22a, and an edge portion of a hole formed at a position facing the insertion path 21a in a state where the tongue piece portion 24 is fitted into the receiving portion 22a. A pressed portion 25a is provided.

The lock piece 15a is formed of a wedge member having a tapered edge that gradually decreases in the vertical width from the base end portion toward the tip end portion, and the lock piece 15a is inserted into the receiving portion 22a in a state where the tongue piece portion 24 is fitted into the receiving portion 22a. When moving in the forward direction indicated by an arrow X1 (see FIG. 4B) inside the insertion path 21a, the upper jaw means 12 is pushed down by pressing the pressed portion 25a from the lock piece 15a, and is horizontally mounted. The wedge means 26a is configured to press against the upper surface of the material.

(Configuration of lower fixing means)
As shown in FIG. 5, the lower fixing means 9 includes a pair of upper and lower horizontal plate portions 28, 28 extending in a horizontal direction from a bracket 27 fixed to the lower end portion of the brace member 7 by welding or the like, and an upper and lower plate portion 28. , 28 is formed by a wedge member 30 slidably inserted into a hole 29 formed in the hole 28.

Since the flange 2 is provided at a predetermined position in the column member 1 constituting the wedge-tightened temporary scaffold with a flange in the illustrated example, the flange 2 is inserted between the upper and lower plate portions 28 and 28. When the wedge member 30 is driven and moved into the wedge hole 2a of the flange 2, the lower fixing means 9 and the flange 2 are firmly fixed to each other without rattling. On the contrary, when the lower fixing means 9 is removed from the flange 2, the wedge member 30 may be moved in the opposite direction and removed from the wedge hole 2a.

The reinforcing device 6 of the present invention can be used to reinforce the horizontal member 4 even if it is a scaffold construction that does not employ the flanged wedge-tightening type. Since the flange 2 is not provided, the lower fixing means 9 may have another configuration. For example, various configurations such as fixing a known clamp fitting that clamps a pair of freely openable / closable jaw members with bolts and nuts to the lower end portion of the brace member 7 can be arbitrarily adopted.

(Operation of the first embodiment)
All of the attaching and removing operations of the reinforcing device 6 can be performed from the lower working floor directly below the horizontal member 4 to be strengthened. First, as shown in FIGS. 6 and 7, the movable jaw portion 14 a of the upper fixing means 8 is opened, the movable jaw portion 14 a is positioned on the upper side of the horizontal member 4, and the fixed jaw portion 13 a is placed on the horizontal member 4. The support 10 is arranged on the one side F by being positioned on the lower side. At this time, the movable jaw portion 14a constituting the upper jaw means 12 is formed by an elongated plate-like arm extending in an arc shape, so that the gap SR between the scaffolding plate 5 on the other side R and the horizontal member 4 is reduced. Thus, the movable jaw portion 14a can be easily passed from below. In this state, while the upper fixing means 8 is moved in the axial direction of the horizontal member 4, the lower fixing means 9 at the lower end of the brace member 7 is positioned so as to face a predetermined portion of the column member 1, and the lower fixing means 9 is fixed to a predetermined position of the column member 1. In the case of the illustrated example, the lower fixing means 9 is fastened to the flange 2 by a wedge member 30.

From this state, the movable jaw portion 14a constituting the upper jaw means 12 of the upper fixing means 8 is rotated downward, and the plug means 20 is fitted into the socket means 19a of the support 10. At this time, since the upper jaw means 12 is formed by an elongated plate-like arm extending in an arc shape, the movable jaw portion 14a is formed with respect to the gap SF between the scaffolding plate 5 and the horizontal member 4 on one side F. It can be easily passed from above. Thereby, the tongue piece portion 24 is fitted into the receiving portion 22a, and the hole provided with the pressed portion 25a communicates with the insertion passage 21a, so that the lock piece 15a constituting the wedge means 26a intersects the pressed portion 25a, When driven in the forward direction indicated by arrow X1 (see FIG. 4B) with a hammer or the like from the base end side, a pressure contact force that causes the upper jaw means 12 to face the horizontal member 4 is generated by the lock piece 15a. By pushing down, the horizontal member 4 is clamped by the upper and lower jaw means 12 and 11 without rattling.

As described above, a pair of left and right reinforcing devices 6, 6 are arranged in a C shape with respect to one horizontal member 4, and the pair of reinforcing devices 6, 6 having the same configuration are symmetrical about the vertical axis. The horizontal member 4 is supported by the column members 1a and 1b. In any strengthening device 6, as shown in FIG. 4A, the lock piece 15 a is displaced from the vertical line V passing through the center of the horizontal member 4, and preferably the lock piece 15 a is moved with respect to the vertical line V. By tilting, the striking portion of the lock piece 15a (the portion located outside the projection of the column member 1 shown in FIG. 7) faces the gap SF, and the extension line of the striking portion is the side portion of the column member 1 It is configured to go to space. Therefore, as shown in FIG. 3, even if the distance L1 between the upper fixing means 8 and the strut member 1 cannot sufficiently secure the hammer striking stroke, the hammer that has been swung up does not interfere with the strut member 1, so it is locked with the hammer. It is possible to drive the piece 15a.

Further, when the temporary scaffold is disassembled, the top fixing means 8 is removed from the horizontal member 4, so that the distal end side of the lock piece 15a is hit with a hammer in the backward direction indicated by the arrow X2 (see FIG. 4B) and pressed. Even in the case of escaping from the portion 25a, the fastening means 16 including the lock piece 15a in one reinforcing device 6 (indicated by reference numeral 6A in FIG. 3) and the lock in the other reinforcing device 6 (indicated by reference numeral 6B in FIG. 3). The fastening means 16 including the piece 15a is disposed so as to be deviated on the opposite sides with respect to the perpendicular line V. Therefore, even if the distance L2 between the pair of reinforcing devices 6A and 6B cannot sufficiently secure the hammer striking stroke, the swung up hammer does not interfere with the reinforcing device 6 on the opposite side, so that the tip side of the lock piece 15a is hit with the hammer. Is possible.

In addition, it is preferable to provide the retaining projection 15p on the side of the tip so that the lock piece 15a that has escaped from the pressed portion 25a does not fall off from the opening 23a in the backward direction indicated by the arrow X2.

With the pair of reinforcing devices 6 and 6 attached, the horizontal member 4 is supported at a position below the support members 1a and 1b by a brace member 7 extending obliquely downward from the upper fixing means 8. Therefore, in addition to the support span (equal to the interval between the strut members 1a and 1b), the construction structure of the horizontal member 4 has the fastening means 4a and 4a at both ends installed on the strut members 1a and 1b as construction support points. A support span (substantially equal to the distance L2 shown in FIG. 3) is formed by using the reinforcing devices 6 and 6 as a construction support point, and a construction support point with a narrow support span is provided, so that the bending strength of the horizontal member 4 is increased. It can be greatly improved. In addition, since each reinforcing device 6 is tightened without rattling as described above, a rigid body structure is formed between the horizontal member 4 and the support members 1a and 1b to prevent the scaffold structure from shaking due to strong winds or the like. . And since it is possible to perform all the attachment work of the reinforcement | strengthening apparatus 6 from a lower layer work floor, work efficiency is good, and it does not unnecessarily narrow the work space S on a lower layer work floor, It is possible to secure a space for the head of the worker who travels through the work space S.

(Second Embodiment)
8 to 10 show the strengthening device 6 according to the second embodiment of the present invention. A pair of reinforcing devices 6, 6 having the same configuration with respect to one horizontal member 4 are arranged in a letter C shape, and the reinforcing device 6 includes a brace member 7 extending obliquely, and an upper end portion of the brace member 7. Is provided with an upper fixing means 8 for fixing the frame member 4 to the horizontal member 4 and a lower fixing means 9 for fixing the lower end portion to the column member 1, which is the same as in the first embodiment. In the second embodiment, the lower fixing means 9 is not shown.

(Configuration of upper fixing means)
The reinforcing device 6 according to the second embodiment is different from the first embodiment except that the technical configuration regarding the lower jaw means 11 and the upper jaw means 12 in the upper fixing means 8 and the support 10 and the fastening means 16 is different. Since it is the same as that of the said 1st Embodiment, hereafter, a different point is demonstrated.

In the second embodiment, the upper fixing means 8 includes a support 10 positioned below the horizontal member 4, a lower jaw means 11 that holds the lower surface of the horizontal member 4, and an upper jaw means 12 that holds the upper surface. The upper jaw means 12 constitutes a fixed jaw portion 13b, and the lower jaw means 11 constitutes a movable jaw portion 14b.

The fixed jaw portion 13b constituted by the upper jaw means 12 extends upward from the support body 10 and forms an arc-shaped hook along the upper surface of the horizontal member 4. Preferably, the inner surface of the hook is uneven. Teeth 31 are provided.

The movable jaw portion 14b formed by the lower jaw means 11 is supported by the support body 10 so as to be freely movable, and the swinging portion 32 swingable in the direction toward the lower surface of the horizontal member 4 and the support body 10. The swinging portion 32 is formed with an arc surface along the lower surface of the horizontal member 4.

Accordingly, in the case of the second embodiment, the lower jaw means 11 is tightened by the tightening means 16 while the horizontal member 4 is held from above and below by the upper and lower jaw means 12 and 13 through the swing of the swinging portion 32 of the lower jaw means 11. By pushing up, the horizontal member 4 is sandwiched between the upper and lower jaw means 12 and 11.

The support 10 includes a socket having a groove-shaped receiving portion 22b for fitting the swinging portion 32 of the lower jaw means 11 so as to swing up and down and a holding hole 34 for holding the holding portion 33 freely. Means 19b and a lock piece 15b for pushing up the swinging part 32 fitted in the receiving part 22b are provided, thereby constituting the fastening means 16.

The socket means 19b is provided with an insertion path 21b in the X-axis direction parallel to the axis of the horizontal member 4 so as to cross the receiving portion 22b, and the lock piece 15b is slidably inserted into the insertion path 21b. Is done. In the case of the illustrated example, the insertion path 21b includes openings 23b and 23b formed on both sides of the support 10 facing the receiving portion 22b.

The lock piece 15b is formed of a wedge member having a tapered edge that gradually decreases in the vertical direction from the base end portion toward the tip end portion, and the lock piece 15b is inserted into the insertion path 21b by an arrow X1 (see FIG. 8B). ), The lock piece 15b presses the pressed portion 25b formed on the lower surface of the swinging portion 32, and constitutes the wedge means 26b that pushes up the lower jaw means 11. On the other hand, when the lock piece 15b is moved in the backward direction indicated by the arrow X2 (see FIG. 8B), the pressed portion 25b is released from the pressing force, and the swinging portion 32 is dropped into the receiving portion 22b. 9A shows a state where the lower jaw means 11 is released from the pressing force, and FIG. 9B shows a state where the lower jaw means 11 is pushed up by the pressing force.

(Operation of Second Embodiment)
All of the attaching and removing operations of the reinforcing device 6 can be performed from the lower working floor directly below the horizontal member 4 to be strengthened. First, the upper fixing means 8 moves the lock piece 15b in the backward direction indicated by the arrow X2 (see FIG. 8B), and the swinging portion 32 of the movable jaw portion 14b constituting the lower jaw means 11 is used as the receiving portion 22b. In this state, as shown in FIG. 10A, the fixed jaw portion 13 b constituting the upper jaw means 12 is locked to the upper surface of the horizontal member 4. At this time, since the fixed jaw portion 13b constitutes an elongated hook extending in an arc shape, the fixed jaw portion 13b is easily passed from below to the gap SR between the scaffold plate 5 and the horizontal member 4. be able to. In the case of the second embodiment, the reinforcing device 6 is suspended from the horizontal member 4 while the upper jaw means 12 is locked to the horizontal member 4, so that the subsequent tightening operation of the lower fixing means 9 and the upper fixing means are performed. 8 tightening work becomes easy.

From this state, when the lock piece 15b constituting the wedge means 26b is made to intersect the pressed portion 25b with a hammer or the like and driven in the forward direction indicated by the arrow X1 (see FIG. 8B) with a hammer or the like from the base end side. The lower jaw means 11 is pushed up, and the horizontal member 4 is clamped by the upper and lower jaw means 12 and 11 without rattling.

When dismantling the temporary scaffolding, when removing the upper fixing means 8 from the horizontal member 4, if the tip side of the lock piece 15b is beaten in the backward direction indicated by the arrow X2 (see FIG. 8B) with a hammer or the like, Since the push-up force with respect to the pressed portion 25b is released and the swinging portion 32 is dropped into the receiving portion 22b, the upper jaw means 12 may be escaped downward from the gap SR.

The locking piece 15b that has released the pressed portion 25b is preferably provided with a retaining projection 15p on the side of the tip so that it does not fall off from the opening 23b in the backward direction indicated by X2.

Incidentally, with respect to one side F and the other side R in the girder direction with respect to the vertical line V passing through the center of the horizontal member 4, in the case of the configuration shown in the figure, as shown in FIG. However, since the portion provided with the holding portion 33 of the movable jaw portion 14b and the holding hole 34 of the support body 10 is also faced to the other side R, it is described above with respect to the first embodiment. The hammer strike stroke is not secured. Therefore, when it is necessary to ensure the hammer striking stroke as described above, the swinging portion 32 and the lock piece 15b of the movable jaw portion 14b are further displaced toward the one side F than in the illustrated example. What is necessary is just to comprise.

(Third embodiment)
FIG. 11 thru | or 13 has shown the reinforcement | strengthening apparatus 6 which concerns on 3rd Embodiment of this invention. A pair of reinforcing devices 6, 6 having the same configuration with respect to one horizontal member 4 are arranged in a letter C shape, and the reinforcing device 6 includes a brace member 7 extending obliquely, and an upper end portion of the brace member 7. Is provided with an upper fixing means 8 for fixing the frame member 4 to the horizontal member 4 and a lower fixing means 9 for fixing the lower end portion to the column member 1, which is the same as in the first embodiment. In the third embodiment, the lower fixing means 9 is not shown.

(Configuration of upper fixing means)
The upper fixing means 8 includes a support body 10 positioned on the lower side of the horizontal member 4, a lower jaw means 11 for holding the lower surface of the horizontal member 4, and an upper jaw means 12 for holding the upper surface. The lower jaw means 11 constitutes the movable jaw portion 14b as well as the portion 13b. The fixed jaw portion 13b constituted by the upper jaw means 12 extends upward from the support body 10 and forms an arc-shaped hook along the upper surface of the horizontal member 4. Preferably, the inner surface of the hook is uneven. Teeth 31 are provided.

The movable jaw portion 14b configured by the lower jaw means 11 includes a swinging portion 32 that is freely supported by the support 10 and swingable in a direction toward the lower surface of the horizontal member 4. The swinging portion 32 is provided with an arc surface 32 a along the lower surface of the horizontal member 4. Thus, the upper jaw means 11 is pushed up by the tightening means 16 while the horizontal member 4 is held from above and below by the upper and lower jaw means 12 and 13 through the swinging of the swinging portion 32 of the lower jaw means 11. The horizontal member 4 is sandwiched between the lower jaw means 12 and 11.

The support body 10 includes socket means 19b having a groove-like receiving portion 22b for fitting the swinging portion 32 of the lower jaw means 11 so as to be swingable in the vertical direction, and swinging fit into the receiving portion 22b. A locking piece 15b that pushes up the portion 32 is provided, thereby constituting the fastening means 16.

The socket means 19b is provided with an insertion path 21b in the X-axis direction parallel to the axis of the horizontal member 4 so as to cross the receiving portion 22b, and the lock piece 15b is slidably inserted into the insertion path 21b. Is done. The lock piece 15b is formed of a wedge member having a tapered edge that gradually decreases in the vertical width from the base end portion toward the tip end portion, and the lock piece 15b is inserted into the insertion path 21b by an arrow X1 (see FIG. 12B). ), The lock piece 15b presses the pressed portion 25b formed on the lower surface of the swinging portion 32, and constitutes the wedge means 26b that pushes up the lower jaw means 11. On the other hand, when the lock piece 15b is moved in the backward direction indicated by the arrow X2 (see FIG. 12B), the pressed portion 25b is released from the pressing force, and the swinging portion 32 is dropped into the receiving portion 22b.

The above-described configuration is the same as that of the second embodiment. In the third embodiment, a pivot portion 35 is formed on the movable jaw portion 14b, and the pivot portion 35 is held on the support body 10 by a pivot shaft 36 so as to be freely rotatable. The swinging portion 32 is provided on one side of the pivotal support portion 35, and the operating piece 37 is extended on the other side. The operating piece 37 and the swinging portion 32 are linked and connected via the pivotal support portion 35. Yes.

Similar to the first and second embodiments described above, a holding space for holding the horizontal member 4 is formed between the fixed jaw portion 13b and the movable jaw portion 14b, and the holding space is the center of the horizontal member 4. With respect to one side F and the other side R located on both sides of the perpendicular line V passing through, an introduction opening is opened on one side, and the operating piece 37 is made to enter the holding space. That is, in a state where the lock piece 15b is retracted from the pressed portion 25b by retreating in the direction of the arrow X2, the swinging portion 32 falls into the receiving portion 22b due to its own weight via the free rotation of the pivot support portion 35, Accordingly, the operating piece 37 enters the inside of the holding space.

When the swinging portion 32 is lifted through the free rotation of the pivotal support portion 35 and simultaneously the operating piece 37 is rotated (rotated in the clockwise direction in the drawing), a retreat groove 38 for retracting the operating piece 37 from the holding space is provided. It extends from the receiving portion 22b to the inside of the back portion of the fixed jaw portion 13b.

(Operation of the third embodiment)
All of the attaching and removing operations of the reinforcing device 6 can be performed from the lower working floor directly below the horizontal member 4 to be strengthened. First, the upper fixing means 8 moves the lock piece 15b in the backward direction indicated by the arrow X2 (see FIG. 12B), and the swinging portion 32 of the movable jaw portion 14b constituting the lower jaw means 11 is used as the receiving portion 22b. When the introduction opening is made to face the horizontal member 4 as shown in FIG. 13 (A) with the operating piece 37 entering the clamping space, the horizontal member 4 moves to the operating piece 37. Abut.

Subsequently, as shown in FIG. 13 (B), the hook of the fixed jaw portion 13b constituting the upper jaw means 12 is moved as indicated by an arrow M so as to be engaged with the upper surface of the horizontal member 4, When the material 4 enters the clamping space, the operating piece 37 is pushed by the horizontal member 4, and the swinging portion 32 moves up in conjunction with this, and the swinging portion 32 can be pushed up by the tightening means 16. A proper standby posture. Therefore, the operator can hold the swinging portion 32 in the standby position only by moving the hook of the fixed jaw portion 13b toward the horizontal member 4 in the direction of arrow M, and the swinging portion 32 (movable jaw) It is not necessary to lift the part 14b) with a fingertip or the like, and the operation is easy. Moreover, since the operating piece 37 is prevented from returning to the original position in a state where the hook of the fixed jaw 13b is suspended from the horizontal member 4, the standby position of the swinging portion 32 is maintained. This makes it easy to tighten the upper fixing means 8.

From this state, when the lock piece 15b constituting the wedge means 26b is made to intersect the pressed portion 25b with a hammer or the like and driven in the forward direction indicated by the arrow X1 (see FIG. 12B) with a hammer or the like from the base end side. As shown in FIG. 13C, the swinging portion 32 is pushed up and pressed against the horizontal member 4, and the horizontal member 4 is clamped by the upper and lower jaw means 12 and 11 without rattling. At this time, the operating piece 37 is retracted into the retracting groove 38.

When disassembling the temporary scaffold, when removing the upper fixing means 8 from the horizontal member 4, if the hammer or the like strikes the distal end side of the lock piece 15b in the backward direction indicated by the arrow X2 (see FIG. 12B), Since the push-up force with respect to the pressed portion 25b is released and the swinging portion 32 is dropped into the receiving portion 22b, the hook of the upper jaw means 12 may be pulled away from the horizontal member 4.

The locking piece 15b that has released the pressed portion 25b is preferably provided with a retaining projection 15p on the side of the tip so that the locking piece 15b does not fall off the insertion path 21b in the backward direction indicated by X2.

Also in the third embodiment, as shown in FIG. 12A, as in the case of the first embodiment, the lock piece 15b is displaced from the vertical line V passing through the center of the horizontal member 4, and preferably It is provided at a position beyond the column member 1 toward the side F. Accordingly, the upper fixing means 8 and the support column are arranged in a state in which the pair of reinforcing devices 6 and 6 have the same configuration in a posture inverted with respect to the vertical axis as the symmetry axis with respect to one horizontal member 4. Even if the distance L1 between the members 1 (see FIG. 3) cannot ensure a hammer striking stroke, the swung-up hammer does not interfere with the support member 1, and the lock piece 15b can be easily driven with the hammer. On the contrary, when the temporary scaffold is disassembled, when the tip end side of the lock piece 15b is hit with a hammer in the backward direction indicated by the arrow X2 (see FIG. 12 (B)) to escape from the pressed portion 25b, Even when the distance L2 (see FIG. 3) between the pair of strengthening devices 6A and 6B cannot sufficiently secure the hammer striking stroke, the swung-up hammer does not interfere with the strengthening device 6 on the opposite side. It is possible to strike a distal end side of the lock piece 15b easily by chromatography.

As described above, in any of the first embodiment, the second embodiment, and the third embodiment, the horizontal member 4 is below the support members 1a and 1b by the brace member 7 extending obliquely downward from the upper fixing means 8. The load supported by the position and received by the horizontal member 4 is suitably supported by the column members 1a and 1b by the lower jaw means 11, the brace member 7 and the lower fixing means 9 of the upper fixing means 8.

At this time, by attaching the pair of reinforcing devices 6 and 6, the construction structure of the horizontal member 4 is a support span (support column) having the fastening means 4a and 4a at both ends installed on the support column members 1a and 1b as installation support points. In addition to the interval between the members 1a and 1b), a support span (which is substantially equal to the interval L2 shown in FIG. 3) having the reinforcing devices 6 and 6 as a support point is formed and the support span is narrowed. Therefore, the bending strength of the horizontal member 4 is greatly improved.

In particular, the strengthening device 6 fastens the horizontal member 4 without rattling by the upper fixing means 8 having the tightening means 16, so that a rigid structure is formed between the horizontal member 4 and the column members 1 a and 1 b, While preventing deformation of the base material 4 in the buckling direction, the scaffold structure is prevented from shaking due to strong winds or the like.

And since it is possible to perform all the attachment work of the reinforcement | strengthening apparatus 6 from a lower layer work floor, work efficiency is good, and it does not unnecessarily narrow the work space S on a lower layer work floor, It is possible to secure a space for the head of the worker who travels through the work space S. In addition, as described above, the upper fixing means 8 and the lower fixing means 9 are configured so that the tightening operation and the tightening releasing operation can be performed only by the hammer, so that there is an advantage that no tools other than the hammer are required.

DESCRIPTION OF SYMBOLS 1a, 1b Support | pillar member 2 Flange 2a Wedge hole 3 Connection means 4 Horizontal member 4a Tightening means 5 Scaffold plate 5a Hook 6 Reinforcement device 7 Brace 8 Upper fixing means 9 Lower fixing means 10 Support body 11 Lower jaw means 12 Upper jaw means 13a, 13b Fixed jaws 14a, 14b Movable jaws 15a, 15b Lock piece 15p Protrusion 16 Tightening means 17 Bracket 18 Pivoting means 19a, 19b Socket means 20 Plug means 21a, 21b Insertion paths 22a, 22b Receiving parts 23a, 23b Opening 24 Tongue pieces 25a, 25b Pressed parts 26a, 26b Wedge means 27 Bracket 28 Plate part 29 Hole 30 Wedge member 31 Teeth 32 Oscillating part 33 Holding part 34 Holding hole 35 Pivoting part 36 Pivot 37 Actuating piece 38 Retraction groove

Claims (8)

A pair of strut members (1a, 1b) facing in the wife direction are sequentially connected upward, and one pair of the pair of strut members is arranged with a gap in the girder direction. In the temporary scaffolding for constructing the upper working floor from the lower working floor in order to construct the working floor extending in the girder direction by installing the scaffolding plate (5) on the horizontal structural member while constructing the structural member (4) A reinforcing device (6) for reinforcing the horizontal member by supporting it from below,
The reinforcing device (6) includes a brace member (7) extending obliquely between a midway portion in the longitudinal direction of the horizontal member and a lower portion of a column member extending downward from the horizontal member, The upper fixing means (8) for fixing the upper end of the brace member to the horizontal member, and the lower fixing means (9) for fixing the lower end to the support member,
The upper fixing means (8) includes a support body (10) positioned below the horizontal member, a lower jaw means (11) for holding the lower surface of the horizontal member, and an upper jaw means (12) for holding the upper surface. A fixed jaw (13a, 13b) fixed to the support (10) by one of the lower jaw means and the upper jaw means, and a movable jaw (14a) that is movable forward and backward with respect to the horizontal member by the other , 14b)
Movable when moving forward in the insertion path by striking with an insertion path (21a, 21b) provided in the support (10) in the X-axis direction parallel to the axis of the horizontal member and hammering A pressure contact force toward the horizontal member is generated with respect to the jaw (14a), and the upper fixing means (8) can be removed from the horizontal member by releasing the movable jaw (14a) when retreating. The fastening means (16) constituting the wedge means (26a) comprising the lock piece (15a) is provided,
The tightening means (16) is arranged on the one side (F) and the other side (R) of the horizontal member (V) located on both sides of the perpendicular (V) passing through the center of the horizontal member (4). The fastening means (16) is displaced to one side (F) with respect to the gap (SF) (SR) between the scaffolding plate (5) and the horizontal member (4) facing the F) and the other side (R), respectively. In the state of facing the gap (SF) ,
By arranging a pair of reinforcing devices (6) and (6) with the same configuration on one horizontal member (4) in an inverted shape with the vertical line as the axis of symmetry. The tightening means (16) including the lock piece (15a) in one reinforcing device (6A) and the tightening means (16) including the lock piece (15a) in the other strengthening device (6B) are opposite to each other. A reinforcing device for a scaffold structure, characterized by being arranged facing a gap (SF) (SR) . The extension line of the hitting portion of the lock piece (15a) facing the gap (SF) on the one side (F) is disposed toward the side space of the column member. The reinforcing device for a scaffold construction according to 1 . The reinforcement of the scaffold structure according to claim 1 or 2 , wherein the brace member (7) is fixed to the support body (10) so that an upper end portion thereof faces the center of the horizontal member. apparatus. The upper fixing means (8) comprises the fixed jaw (13a) by the lower jaw means (11) and the movable jaw (14a) by the upper jaw means (12), and the other of the horizontal members The upper jaw means (12, 11) is provided through the rotation of the upper jaw means by providing pivoting means (18) that pivots the upper jaw means (12) to the lower jaw means (11) so as to face the side (R). ), While holding the horizontal member (4) from above and below, the upper jaw means (12) is pushed down by the tightening means (16), so that the horizontal member (4) is removed by the upper and lower jaw means (12, 11). It is comprised so that it may pinch | interpose, The reinforcement apparatus of the scaffold construction body of Claim 1 or 2 characterized by the above-mentioned. The fastening means (16) includes a socket means (19a) provided on the support so as to face the one side (F) of the horizontal member, and a plug means (20 provided at the free end of the upper jaw means (12). And the lock piece (15a),
The socket means (19a) is provided with an insertion path (21a) in the X-axis direction parallel to the axis of the horizontal member, and a receiving part (22a) crossing the insertion path,
The plug means (20) includes a tongue piece portion (24) that can be fitted into the receiving portion (22a), and a pressed portion that faces the insertion path (21a) with the tongue piece portion fitted into the receiving portion ( 25a)
The lock piece (15a) is formed by pressing the pressed portion (25a) when the lock piece is moved forward in the insertion path in a state in which the tongue piece portion is fitted in the receiving portion, so that the upper jaw means (12 The apparatus for reinforcing a scaffold structure according to claim 4, wherein the apparatus is pressed down and pressed against the upper surface of the horizontal member (4). The upper fixing means (8) comprises the fixed jaw (13b) by the upper jaw means (12), and the movable jaw (14b) by the lower jaw means (11),
The movable jaw (14b) is movably held on the support (10) and is provided with a swinging part (32) that is swingable in a direction toward the lower surface of the horizontal member,
In the state where the horizontal member (4) is held from above and below by the upper and lower jaw means (12, 11) through the swinging of the swinging portion (32) of the lower jaw means (11), the lower jaw means by the tightening means (16) The scaffold according to claim 1, 2 or 3, characterized in that the horizontal member (4) is sandwiched by the upper and lower jaw means (12, 11) by pushing up (11). Structure strengthening device. The tightening means (16) is constituted by a socket means (19b) provided on the support (10), a swinging part (32) of the lower jaw means (11), and the lock piece (15b),
The socket means (19b) is provided with an insertion path (21b) in the X-axis direction parallel to the axis of the horizontal member, and a receiving part (22b) crossing the insertion path,
The swinging portion (32) of the lower jaw means (11) is inserted into the receiving portion (22b) so as to be swingable, forms a pressure contact portion on the upper surface, and has a pressed portion (25b) on the lower surface. ,
When the locking piece (15b) moves forward in the insertion path, the pressing portion of the lower jaw means (11) is pressed against the lower surface of the horizontal member (4) by pressing the pressed portion (25b). It is comprised so that it may be made. The reinforcement apparatus of the scaffold construction body of Claim 6 characterized by the above-mentioned. An introduction opening is formed on the side of the clamping space between the fixed jaw (13b) constituted by the upper jaw means (12) and the movable jaw (14b) constituted by the lower jaw means (11),
The movable jaw (14b) is provided with an operating piece (37) extending from the pivotal support (35) held free to the support (10) to the clamping space, via the pivotal support (35). The operating piece (37) and the swinging part (32) are linked and connected,
When the horizontal member (4) pushes the operating piece (37) by entering the holding space from the introduction opening, the swinging part (32) is interlocked with the pushing of the working piece (37). The scaffold constructing body according to claim 6 or 7, wherein the swinging portion (32) is configured to be in a standby posture capable of being pushed up by the tightening means (16). Strengthening device.

Images