JP2016061083A - Scaffolding platform connecting device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a scaffold base connector that prevents dislocation of the scaffold base of a connection plate from a top plate and also a huge rattling of the connection plate, even while working on the connection plate.SOLUTION: A scaffold base connector includes a connection plate 6 and a connector 7 for connecting the connection plate 6 detachably to a top plate 4. A mounted plate 19 mounted on a top surface of an edge part of the top plate 4 of a scaffold base 3 is fixed on both edge parts of the connection plate 6. The connector 7 has a lower engaging member 23 engaged on an undersurface side of the top plate 4, so as to restrict upward movement of the connection plate 6. The lower engaging member 23 is supported in such a way to allow a posture change freely between an engaged posture X engaged with the top plate 4 and a withdrawn posture Y disengaged from the top plate 4.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a scaffolding coupling device in which a coupling plate is disposed between the top plates of a pair of scaffolding platforms so that the top plates are coupled to each other.

The scaffolding table coupling device includes a coupling plate disposed between the top plates of a pair of scaffolding tables that are spaced apart from each other, and a coupling that is provided at both ends of the coupling plate so as to be detachably coupled to the top plate. Some are equipped with ingredients.
In this type of conventional scaffolding coupling device, the couplings provided at both ends of the coupling plate are provided with hooks projecting downward in a bowl shape toward both sides of the coupling plate. Placing the plate between the top plates of the scaffolding platform, and detachably engaging the coupling plate from the top with the hook receiving frame fixed to the top plate of the pair of scaffolding platforms, so that the coupling plate can be detached from the top plate. (For example, patent document 1).

JP-A-9-32271

However, in the conventional case, when working on the connecting plate, the connecting plate floats with respect to the top plate of the scaffolding, the hook of the connecting plate comes off the hook frame, and the connection of the connecting plate to the top plate is unpredictable. Or the connecting plate may become loose.
In view of the above problems, the present invention is a scaffold capable of connecting top plates to each other without fear that the connection of the connection plate to the top plate of the scaffolding base will be disconnected or the connection plate will be largely loose even when working on the connection plate. The object is to provide a table coupling device.

Specific means for solving the problems in the present invention are as follows.
The technical means of the present invention that solves this technical problem is provided with a connecting plate 6 disposed between the top plates 4 of the pair of scaffolds 3 spaced apart from each other, and both ends of the connecting plate 6, A scaffolding platform coupling device provided with a coupling tool 7 for detachably coupling the coupling plate 6 to the top plate 4,
Placed on both ends of the connecting plate 6 are placing plates 19 that are placed on the upper surface of the end of the top plate 4 of the scaffolding platform 3,
The connector 7 has a lower engagement member 23 that is engaged with the lower surface side of the top plate 4 so as to restrict the upward movement of the connection plate 6, and the lower engagement member 23 engages with the top plate 4. The position is supported by the engagement posture X and the retracting posture Y that is disengaged from the top 4 so that the posture can be freely changed.

Further, according to another technical means of the present invention, the connector 7 includes an upper engagement member 24 that is engaged with the upper surface side of the top plate 4, and an engagement posture is provided at a distal end portion of the upper engagement member 24. In the case of X, an engaging portion 44 that protrudes downward is provided so as to engage with the top plate locking hole 43 formed in the top plate 4 of the scaffold 3 from above.
Another technical means of the present invention is that the connector 7 includes a shaft support base 25 fixed on the lower surface side of the connection plate 6 and a shaft that is movable up and down from the connection plate 6 to the shaft support base 25. And a support shaft 26 inserted in the up and down direction so as to be rotatable about the upper shaft. An upper engagement member 24 is fixed to the upper portion of the support shaft 26 so as to prevent the support shaft 26 from falling downward. The lower engagement member 23 is fitted below the support base 25 so as to be movable up and down and relatively unrotatable. The lower engagement member 23 is urged upward with respect to the support shaft 26 and the lower engagement member 23 is energized. Urging means 51 for urging the support shaft 26 downward is provided, and the lower engagement member 23 and the upper engagement member 24 are engaged with each other in the engagement posture X and the retracted posture Y by the rotation of the support shaft 26 around the shaft. The point is that the posture can be freely changed.

  Another technical means of the present invention is that the connecting plate 6 is provided with a locking hole 20 in which the engaging portion 44 of the upper engaging member 24 engages from above when the retracted posture Y is set. is there.

  According to the present invention, when the connecting plate is disposed from the upper side between the top plates of the pair of scaffolding platforms, the mounting plates on both sides of the connecting plate can be mounted on the upper surfaces of the end portions of the pair of top plates in a wide area. . In addition, since the lower engagement member is in the engagement posture, the upward movement of the connection plate can be restricted by the lower engagement member, so that the connection plate can be used as a scaffold even when working on the connection plate. It is possible to prevent the base plate from being lifted to a large extent, and it is possible to reliably prevent the connection plate from being unintentionally disconnected or the connection plate from becoming largely loose.

  In addition, since the lower engagement member is supported in a freely changeable posture between an engagement posture for engaging with the top plate and a retracting posture for disengaging from the top plate, changing the posture between the engagement posture and the retracting posture allows Attachment and removal of the connecting plate to the plate can be easily performed.

It is a front view of the scaffolding coupling device showing the first embodiment of the present invention. It is a front view of the whole scaffolding coupling device. It is a top view of the same scaffolding coupling device. It is a side view of the same scaffolding coupling device. It is an enlarged plan view of the connector. It is the sectional view on the AA line of FIG. FIG. 6 is a sectional view taken along line B-B in FIG. 5. It is a front view which shows the stacked state of the same scaffolding coupling device. It is an enlarged plan view of a connector showing a second embodiment. It is CC sectional view taken on the line of FIG. It is front sectional drawing of the coupling tool which shows 3rd Embodiment.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
1 to 8 show a first embodiment of the present invention. 1 to 7, a scaffolding platform coupling device 1 couples the top plates 4 of a pair of scaffolding platforms 3 separated from each other, and a coupling plate 6 disposed between the top plates 4 of the pair of scaffolding platforms 3. And a connecting tool 7 provided at both left and right ends of the connecting plate 6.

Here, as shown in FIG. 2, the pair of scaffolding bases 3 includes a top plate 4 and left and right legs 9 that support the top plate 4. Is arranged.
The connecting plate 6 is formed by joining four rectangular rectangular component plates 11 in the front-rear direction, and each component plate 11 has a large number of through holes 12 and a central reinforcing cylinder that is long in the left-right direction on the lower surface side. The part 13 and the end reinforcing cylinder part 14 are integrally formed. The central reinforcing cylinder 13 is formed in a wide rectangular tube at the center in the front-rear direction of each component plate 11, and the end reinforcing cylinder 14 is a narrow rectangular tube at each of the front and rear ends of each component plate 11. Is formed.

A grip rod 16 formed in an elongated E shape in a side view is protruded downward at both left and right end portions on the lower surface side of the connecting plate 6. A front plate 17 having an L shape in side view is fixed to the front end portion of the connecting plate 6. Circular locking holes 20 are provided on the inner side in the front-rear direction than the respective connecting tools 7 at the left and right ends of the connecting plate 6.
On both left and right ends of the connecting plate 6, mounting plates 19 that are mounted on the upper surface of the end portion of the top plate 4 of the scaffold 3 are fixed. The mounting plate 19 has a vertical fixing plate portion 21 and a horizontal mounting plate portion 22 in an inverted L shape when viewed from the front, and the fixing plate portion 21 is welded to the outer end portion of the connecting plate 6 in the left-right direction. The mounting plate portion 22 protrudes outward in the left-right direction from the upper end portion of the fixed plate portion 21, and the upper surface of the mounting plate portion 22 is flush with the upper surface of the connecting plate 6. The connecting plate 6 is placed across the left and right top plates 4 via the left and right placement plates 19.

The connecting member 7 is a member that removably connects the connecting plate 6 to the top plate 4. In the illustrated example, two connecting members 7 are arranged on the left and right ends of the connecting plate 6 apart from each other in the front-rear direction. Yes.
Each connector 7 is fixed to the lower engagement member 23 engaged with the lower surface side of the top plate 4, the upper engagement member 24 engaged with the upper surface side of the top plate 4, and the lower surface side of the connection plate 6. A shaft support base 25 and a support shaft 26 are provided. Circular attachment holes 27 for inserting the support shafts 26 corresponding to the respective connecting tools 7 are provided at the left and right end portions of the connecting plate 6.

The shaft support 25 is formed in a rectangular tube shape having an upper wall portion 29, a lower wall portion 30, a front wall portion 31, and a rear wall portion 32, and the upper wall portion 29 is the lower surface of the connecting plate 6 (component plate 11). It is fixed by welding or the like. A circular insertion hole 33 is provided in the upper wall portion 29 and the lower wall portion 30 so as to correspond to the mounting hole 27 of the connecting plate 6.
The support shaft 26 is formed in a rectangular bar shape that is long in the vertical direction, and is inserted into the end portion of the connecting plate 6 through the mounting hole 27 and is inserted into the shaft support base 25 through the insertion hole 33, thereby the support shaft 26. Is inserted in the vertical direction from the connecting plate 6 to the shaft support base 25 so as to be movable up and down and rotatable around the shaft.

The lower engagement member 23 is formed in a rectangular plate shape, and includes a horizontal attachment plate portion 35 and an engagement plate portion 36 inclined downward from the attachment plate portion 35 toward the lower side of the top plate 4. The inclination angle θ to be a horizontal plane is set to about 10 degrees. A square fitting hole 37 is formed through the central portion of the mounting plate portion 35.
The lower engagement member 23 is externally fitted below the shaft support base 25 of the support shaft 26 through a fitting hole 37 so as to be movable up and down and not relatively rotatable.

The upper engagement member 24 is made of a round bar, and is fixed to the upper portion of the support shaft 26, thereby preventing the support shaft 26 from falling downward with respect to the connecting plate 6. A non-slip portion 39 formed by engraving a number of grooves on the outer peripheral surface of the middle portion of the upper engagement member 24 is provided.
Thus, the lower engagement member 23 and the upper engagement member 24 are interlocked with each other by the rotation of the support shaft 26 about the axis, and the posture can be freely changed between the engagement posture X and the retracted posture Y. When X is set, the lower engagement member 23 and the upper engagement member 24 protrude outward in the left-right direction from the end of the connecting plate 6, and the lower engagement member 23 engages the top plate 4 from below. The upward movement of the connecting plate 6 is restricted. Further, when the posture is changed to the retracted posture Y, the lower engagement member 23 and the upper engagement member 24 are retracted inward in the front-rear direction so as to follow the end portion of the connecting plate 6.

A top plate locking hole 43 is formed in the end portion of the top plate 4 of the scaffold base 3 so as to correspond to the upper engagement member 24, and an engaging portion 44 that protrudes downward is provided at the tip of the upper engagement member 24. When the upper engagement member 24 is in the engagement posture X, the engagement portion 44 engages with the top plate locking hole 43 from above, and when the upper engagement member 24 is in the retracted posture Y, the engagement portion 44 is engaged. Engages with the locking hole 20 of the connecting plate 6.
A male threaded portion 47 protrudes downward from the lower portion of the support shaft 26, and a spring receiver 48 is externally fitted to the male threaded portion 47 and a nut 49 is screwed together, so that the spring receiver 48 is connected to the proximal end side of the male threaded portion 47. It is fastened and fixed to.

A biasing means 51 is provided between the spring receiver 48 and the lower engagement member 23. The urging means 51 is constituted by a coil spring, and is externally fitted to the support shaft 26. The upper end portion is in contact with the lower engagement member 23 and the lower end portion is in contact with the spring receiver 48. The lower engagement member 23 is urged upward, and the support shaft 26 is urged downward with respect to the lower engagement member 23.
Thus, the lower engagement member 23 is moved upward with respect to the support shaft 26 by the urging force of the urging means 51 and is brought into contact with the lower surface of the lower wall portion 30 of the shaft support base 25. The upper engaging member 24 is brought into contact with the upper surface of the connecting plate 6 by moving downward with respect to the engaging member 23 to the shaft support base 25. By pulling the upper engagement member 24 upward, the upper engagement member 24 or the support shaft 26 can be moved upward against the urging force of the urging means 51, and the upper engagement member 24 is gripped upward. By rotating around the support shaft 26 after being pulled, the lower engagement member 23 and the upper engagement member 24 can be simultaneously changed into the engagement posture X and the retracted posture Y.

According to the first embodiment, when the connecting plate 6 is disposed between the top plates 4 of the pair of scaffolding bases 3 and connected to the top plate 4, the lower engagement member 23 and the upper engagement member 24 are retracted. In this state, the connecting plate 6 is disposed between the top plates 4 of the pair of scaffolding bases 3 from above, and the left and right mounting plates 19 are respectively mounted on the upper surfaces of the end portions of the left and right top plates 4.
Thereafter, the lower engagement member 23 and the upper engagement member 24 are retracted simultaneously by grasping the upper engagement member 24 and pulling the support shaft 26 upward and rotating the upper engagement member 24 around the support shaft 26. The posture is changed from the posture Y to the engagement posture X, and the upper engagement member is adjusted while moving the connecting plate 6 in the front-rear direction with respect to the top plate 4 so that the engagement portion 44 coincides with the top plate locking hole 43. When the gripping of 24 is released, the support shaft 26 moves downward by the biasing of the biasing means 51, the upper engagement member 24 comes into contact with the upper surface of the connecting plate 6, and the engagement portion 44 of the upper engagement member 24 is moved. The lower engagement member 23 engages with the top plate 4 from below by engaging with the top plate engagement hole 43.

  At this time, the mounting plates 19 on both sides of the connecting plate 6 can be mounted on the upper surfaces of the end portions of the pair of top plates 4 in a wide area. Further, when the lower engagement member 23 is engaged with the top plate 4 from below, the upward movement of the connecting plate 6 is restricted, and the engagement portion 44 of the upper engagement member 24 is connected to the top plate engagement hole 43. By engaging with the top plate 4, the left and right movements and the front and rear movements of the connecting plate 6 are restricted. In addition, by restricting the upward movement of the connecting plate 6 as described above, it is possible to reliably prevent the engaging portion 44 of the upper engaging member 24 from being unexpectedly detached upward from the top plate locking hole 43. .

Accordingly, the connecting plate 6 can be stably placed between the pair of top plates 4 so that the connecting plate 6 is not greatly rattled up and down, front and rear, and left and right. Is lifted with respect to the top plate 4, and there is no possibility that the connection of the connection plate 6 to the top plate 4 of the scaffold 3 is unintentionally disconnected or the connection plate 6 is largely rattled.
When removing the connecting plate 6 from between the top plates 4, the upper engagement member 24 is gripped and the support shaft 26 is pulled upward, and the engagement portion 44 of the upper engagement member 24 is removed from the top plate engagement hole 43. After being removed upward, the upper engagement member 24 is rotated about the support shaft 26, whereby the lower engagement member 23 and the upper engagement member 24 of each connector 7 are moved from the engagement posture X to the retracted posture Y. change. Then, the lower engaging member 23 is along the lower surface of the outer end portion of the connecting plate 6, the upper engaging member 24 is along the upper surface of the outer end portion of the connecting plate 6, and the engaging portion 44 of the upper engaging member 24 is Since the lower engaging member 23 and the upper engaging member 24 are fixed so as not to move unexpectedly by engaging with the locking hole 20, the connecting plate 6 can be lifted upward with respect to the top plate 4 and then removed. That's fine.

Therefore, although the connector 7 has the lower engagement member 23 engaged with the lower surface side of the top plate 4 and the upper engagement member 24 engaged with the upper surface side of the top plate 4, The connecting plate 6 can be easily detached from the scaffold base 3.
When housing a plurality of connecting plates 6, the two connecting plates 6 are opposed to each other on their lower surfaces as shown in FIG. If they are arranged to be shifted left and right, a plurality of connecting plates 6 can be stacked in a compact manner and stored.

  9 and 10 show a second embodiment, in which the connector 7 is provided corresponding to the central reinforcing cylinder portion 13 of the component plate 11 on both ends of the connecting plate 6 in the front-rear direction, and the central reinforcing cylinder portion 13 is supported by the support shaft. This is also used as a shaft support base 25 that supports 26. A circular attachment hole 27 is formed in the connecting plate 6 (component plate 11), and a circular insertion hole 33 is formed in the bottom wall of the central reinforcing cylinder portion 13, and the support shaft 26 is interposed via the attachment hole 27 and the insertion hole 33. Is inserted into the connecting plate 6 so that the support shaft 26 can be vertically moved from the connecting plate 6 to the shaft support base 25 (central reinforcing cylinder portion 13) and can be rotated about the shaft in the vertical direction. . Further, a stepped plate portion 52 that is bent downward in a stepped manner from the mounting plate portion 35 is provided between the mounting plate portion 35 and the engaging plate portion 36 of the lower engagement member 23. The other points are the same as those in the first embodiment.

  FIG. 11 shows a third embodiment in which a retaining head 53 is fixed to the upper end portion of the support shaft 26 in place of the upper engagement member 24, and the supporting shaft 26 is attached to the connecting plate 6 by the retaining head 53. To prevent it from coming down. An operation ring 54 is inserted and held in the retaining head 53 so as to be swingable around the front and rear axes, and the support ring 26 can be pulled up and rotated by grasping the operation ring 54 by hand. It has become.

  Further, the upper engaging member 24 is provided on the left and right mounting plates 19 so as to protrude outward in the left-right direction, and the top plate locking hole 43 is provided at the distal end portion of the upper engaging member 24 in the engagement posture X. An engaging portion 44 that engages from above is projected downward. Accordingly, only the lower engagement member 23 can be changed between the engagement posture X and the retracted posture Y by the rotation of the support shaft 26 around the axis, and the upper engagement member 24 remains fixed in the engagement posture X. It has become. The other points are the same as those in the first embodiment.

In the above-described embodiment, the upper engaging member 24 is provided in the connector 7 in addition to the lower engaging member 23. Alternatively, the upper engaging member 24 may be omitted.
Moreover, in the said embodiment, the connection tool 7 is fixed to the lower surface side of the connection board 6, and the shaft support stand 25 is movable up and down from the connection board 6 to the shaft support stand 25, and can be rotated around an axis. However, instead of this, the shaft support base 25 and the support shaft 26 are omitted, and the lower engagement member 23 is placed on the lower surface side of the connecting plate 6 and the top plate 4. You may make it support to the attitude | position changeable by rotation or linear reciprocating movement to the engagement attitude | position X which engages with, and the retracting attitude | position Y which remove | deviates from the top plate 4. FIG.

  Further, the biasing means 51 may be constituted by a plate spring other than the coil spring.

DESCRIPTION OF SYMBOLS 1 Scaffolding base coupling device 3 Scaffolding base 4 Top plate 6 Connecting plate 7 Connecting tool 19 Mounting plate 20 Locking hole 23 Lower engagement member 24 Upper engagement member 25 Shaft support base 26 Support shaft 43 Top plate locking hole 44 Engagement Joint portion 51 Energizing means X Engagement posture Y Retraction posture

Claims (4)

A connecting plate (6) disposed between the top plates (4) of the pair of scaffolding platforms (3) spaced apart from each other, and provided at both ends of the connecting plate (6), the connecting plates (6) are A scaffolding coupling device provided with a coupling tool (7) detachably coupled to a plate (4),
A mounting plate (19) mounted on the upper surface of the end of the top plate (4) of the scaffolding base (3) is fixed to both ends of the connecting plate (6).
The connector (7) has a lower engagement member (23) engaged with the lower surface side of the top plate (4) so as to restrict the upward movement of the connection plate (6). 23) is a scaffolding base coupling device, which is supported in an engagement posture (X) that engages with the top plate (4) and a retracting posture (Y) that is disengaged from the top plate (4). .   The connector (7) is provided with an upper engagement member (24) engaged with the upper surface side of the top plate (4), and an engagement posture (X) is provided at the tip of the upper engagement member (24). An engagement portion (44) that protrudes downward so as to engage with the top plate locking hole (43) formed in the top plate (4) of the scaffold base (3) is sometimes provided. The scaffolding coupling device according to claim 1.   The connector (7) includes a shaft support (25) fixed on the lower surface side of the connection plate (6), and is movable up and down from the connection plate (6) to the shaft support (25). And a support shaft (26) that is pivotably inserted in the vertical direction, and an upper engagement member (24) is fixed to the upper portion of the support shaft (26) so as to prevent the support shaft (26) from falling downward. The lower engagement member (23) is fitted on the lower side of the support shaft (25) of the support shaft (26) so as to be movable up and down and not relatively rotatable. 23) and an urging means (51) for urging the support shaft (26) downward with respect to the lower engagement member (23). The urging means (51) is provided around the shaft of the support shaft (26). The lower engagement member (23) and the upper engagement member (24) can be changed in posture between an engagement posture (X) and a retracted posture (Y) by movement. Scaffolding board connecting apparatus according to claim 2 that.   The connection plate (6) is provided with a locking hole (20) in which the engaging portion (44) of the upper engaging member (24) engages from above when the retracted posture (Y) is set. The scaffolding coupling device according to claim 2 or 3.

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