JP2022097978A - Scaffold board positioning locking device in temporary scaffold - Google Patents

Abstract

To provide a device for locking hooking means at a prescribed position in a positioned state in a temporary scaffold, when loading the hooking means of the scaffold board at the prescribed position in the axial direction of a horizontally installed support pipe.SOLUTION: In a temporary scaffold loaded with hooking means of a scaffold board at a predetermined position (P) in the axial direction of a support pipe, the support pipe (1a) has restriction means (11) consisting of a restriction pin (12) having a stopper part (13) facing to a side face of hooking means (8) loaded at the prescribed position. The restriction pin (12) is slidably supported on the support pipe between a protrusion position (M1) with the stopper part protruded by a prescribed height from an upper face of the support pipe and a retreated position (M2) moved downward from the protruded position. Normally, the restriction pin is held at the protrusion position (M1) by spring means (15), and when a downward external force is applied to the stopper part, the pin is moved to the retreated position (M2) resisting against the spring means.SELECTED DRAWING: Figure 2

Description

The present invention relates to a device for locking the hook means of the scaffolding plate at a predetermined position in the axial direction of a support tube installed sideways in a temporary scaffold in a positioned state.

Generally, a temporary scaffold is constructed by arranging a pair of columns connected by erection of a horizontal member in a row in a connected state, and a scaffold plate is mounted between adjacent horizontal members. This forms a work floor.

The horizontal member is fixed to a support column via binding means provided at both ends. The scaffolding plate is formed in a rectangular shape having a gable side and a gable side, and a pair of hook means provided at both ends of the gable side is mounted on a support pipe formed on the shaft portion of the horizontal member, and the scaffolding plate is mounted via a drop lock. Is locked.

By the way, the hook means of the scaffolding plate is not fixed in the axial direction of the support tube in a state of being mounted at a predetermined position of the support tube. Therefore, when an external force is applied, the support tube is displaced in the axial direction and can move.

As a result, when one of the hook means of the pair of hook means moves toward one shaft end of the support tube, the hook means interferes with the binding means, and conversely, the other hook means separates from the support. There is a problem that it moves in the direction and widens the gap on the girder side of the scaffolding board.

Therefore, a stopper for preventing the misaligned movement of the hook means mounted on the support tube has been proposed.

Utility Model Registration No. 3047369 Utility Model Registration No. 3201488 Gazette

In the prior art shown in Patent Document 1 and Patent Document 2, a stopper is formed by providing a protrusion protruding from the upper surface of the support tube, and the stopper is brought into contact with the side surface of the hook means to prevent misalignment movement. It is configured to do.

However, when mounting the hook means on the support tube, the hook means may be mounted on the stopper. As is well known, the hook means is provided with a drop lock on the side, and when the drop lock is mounted on the support tube with the drop lock standing by in the upward movement position and then the drop lock is moved downward, the hook means falls. The lock is configured to hold the support tube from below.

However, when the hook means is placed on the stopper, the support tube cannot be held from below by the falling lock. That is, the hook means is not locked to the support tube and is in a state where it can be dropped off. Therefore, it is extremely dangerous to complete the scaffolding construction in such a state.

Therefore, it is necessary to provide a scaffolding plate positioning and locking device configured so as not to cause such a danger, and this is a problem of the present invention.

Further, as another problem from the above, the stopper is faced so as to be able to come into contact with one side surface (predetermined side surface) of both side surfaces of the hook means mounted on the support tube, whereby the hook means is positioned at a predetermined position. It is configured to lock. However, when mounting the hook means on the support tube, there is a possibility that the side surface opposite to the predetermined side surface of the hook means faces the stopper, in which case the operator moves the hook means and the predetermined side surface is the stopper. It is necessary to change the position so that it faces.

However, in order to move the hook means in this way, the hook means must be lifted together with the scaffolding plate to get over the stopper, which requires complicated work.

Therefore, it is necessary to provide a scaffolding plate positioning and locking device configured so that the hook means can be easily moved, which is a problem of the present invention.

The present invention provides a positioning and locking device for a scaffolding plate in a temporary scaffolding that solves the above problems, and the scaffolding plate is configured as a means thereof at a predetermined position in the axial direction of a support pipe installed sideways. In the temporary scaffolding constructed by mounting the hook means of the above, the support pipe is provided with a regulating means for positioning and locking the hook means at the predetermined position, and the regulating means is mounted at the predetermined position. It is composed of a regulating pin having a stopper portion facing the side surface of the hook means, and the regulating pin has a protruding position in which the stopper portion protrudes from the upper surface of the support tube by a predetermined height and a retracting position in which the stopper portion moves downward from the protruding position. It is slidably supported by the support pipe between the position and the support tube, is always held in the protruding position by the spring means, and when a downward external force acts on the stopper portion, it moves to the retracted position against the spring means. It is a point that is configured to move.

In a preferred embodiment of the present invention, the regulation pin is arranged from the upper surface of the support tube in a state where the axis of the pin is arranged so as to be orthogonal to the axial direction of the support tube and is held in a protruding position by the spring means. The peripheral surface of the protruding stopper forms a receiving portion that extends parallel to the axis from the upper surface of the support tube to a predetermined height position, and a guide portion that inclines from the receiving portion toward the top of the stopper portion. It is formed so that when an external force toward the axial direction of the support tube acts on the guide portion, the regulating pin is moved to the retracted position against the spring means.

According to the present invention, the regulation pin 12 is configured to be movable downward from the state held at the protruding position M1 by the spring means 15 to the retracted position M2 against the spring means 15. As a result, when the scaffolding plate 3 is attached, even when the hook means 8 deviates from the predetermined position P and is placed on the regulation pin 12, the hook material 8a is covered with the support tube 1a from above. By lowering the falling lock 8b, it can be locked to the lower side of the support tube 1a, and safety in the mounted state of the scaffolding plate can be ensured.

It is a perspective view which shows the horizontal member which carried out the positioning locking apparatus which concerns on 1 Embodiment of this invention, a column, and a scaffolding board in an disassembled state. It is a perspective view which shows the state which each member was assembled from the disassembled state of FIG. Regarding one embodiment of the present invention, (A) is a perspective view showing a state in which the regulating means is disassembled from the support tube, and (B) is a state in which the regulating pin of the regulating means provided in the support tube is held at a protruding position. The cross-sectional view is shown, (C) is a partially enlarged view showing the stopper portion of the regulation pin, and (D) is a cross-sectional view showing a state in which the regulation pin is moved to the retracted position. The operation when the hook means is mounted at a predetermined position of the support tube is shown, (A) is a front view showing a state where the hook means is facing a predetermined position of the support tube, and (B) is a predetermined position of the hook means of the support tube. A front view showing a state in which the falling lock is locked and mounted at a position, (C) is a sectional view taken along line AA of (B). When the hook means is mounted on the support tube, the action when the hook means is mounted on the stopper portion of the regulation pin is shown, (A) is a front view showing the state where the hook means is mounted on the stopper, and (B) is (A). BB line cross-sectional view, (C) is a front view showing a state in which the hook means is moved to a predetermined position and the falling lock is locked, and (D) is a CC line cross-sectional view of (C). .. When the hook means is mounted on the support tube, the action is shown when the hook means is mounted on the opposite side of the predetermined position with respect to the stopper portion of the regulation pin, and (A) shows the action when the hook means is mounted on the opposite side of the predetermined position. A front view showing a state, (B) is a sectional view taken along line DD of (A), (C) is a front view showing a state in which the hook means is lifted, and (D) is along the line EE of (C). A partial cross-sectional view, (E) is a partial cross-sectional view showing a state in which the guide portion of the stopper portion is pressed by the hook means, and (F) is a partial cross-sectional view showing a state in which the regulation pin is moved to the retracted position. be.

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

As shown in FIGS. 1 and 2, the temporary scaffolding is constructed by arranging columns 2 which are a pair of columns connected by erection of a horizontal member 1 in a connected state, and adjacent horizontal frames. By mounting the scaffolding plate 3 between the materials 1 and 1, it is configured to form a work floor.

The horizontal member 1 is fixed to the support column 2 via the binding means 4 provided at both ends, and in the illustrated example, the horizontal member 1 is fixed to the support column 2 by the upper and lower jaw portions of the connecting metal fitting 5 provided at the end portion of the horizontal member 1. Although the wedge binding method is shown in which the wedge 7 is driven in a state where the provided flange 6 is sandwiched, the wedge 7 is not limited to this.

The scaffolding plate 3 is formed in a rectangular shape having a gable side and a gable side, and a pair of hook means 8 and 8 provided at both ends on the gable side are formed by a shaft portion of the cross member 1 and a support pipe 1a is formed. By mounting it on, it is erected between the support pipes 1a and 1a of the adjacent horizontal members 1 and 1.

The hook means 8 is composed of a hook material 8a that covers the support tube 1a having a circular cross section from above, and a drop lock 8b attached to one side surface of the hook material 8a. As shown in FIG. 4, the drop lock 8b is held by inserting the holding pins 9 and 9 provided on the side of the hook member 8a into the control holes 10 and 10 of the drop lock 8b.

Therefore, as shown in FIG. 4A, the falling lock 8b holds its posture in a state of being lifted by the control hole 10, opens the lower side of the hook material 8a, and attaches the hook material 8a to the support tube 1a. Can be installed. Then, as shown in FIG. 4B, when the drop lock 8b is pushed with a fingertip or the like with the hook material 8a mounted on the support tube 1a, the drop lock 8b descends while being controlled by the control hole 10 and the support tube 1a is moved. Hold from below.

In such a configuration, the present invention provides the support tube 1a with a regulating means 11 for positioning and locking the hook means 8 mounted at the predetermined position P in the axial direction of the support tube 1a. There is.

Regarding this point, the support pipe 1a is composed of the shaft portion of the horizontal member 1 in the illustrated embodiment, but the support tube 1a is not limited to the horizontal member 1, and a bracket or the like for mounting the hook means 8 of the scaffolding plate 3 may be used. Please understand that it is a included concept.

As shown in FIG. 3, the regulating means 11 is composed of a regulating pin 12 provided with a stopper portion 13 facing the side surface of the hook means 8 mounted at the predetermined position P, and is configured in the vertical radial direction of the support tube 1a. As shown in FIG. 3B, the stopper portion 13 has a protruding position or a protruding posture M1 that is inserted into the formed upper and lower holes 14a and 14b and is projected from the upper surface of the support tube 1a by a predetermined height. As shown in FIG. 3D, the support pipe 1a is slidably supported between the retracted position M2 and the retracted position M2 moved downward from the protruding position, and the protruding position M1 is always supported by the spring means 15. It is held in. Therefore, the regulation pin 12 is configured to retract against the spring means 15 and move to the retracted position M2 when a downward external force acts on the stopper portion 13.

In the illustrated embodiment, the regulation pin 12 has a stopper portion 13 formed at the upper end portion of the pin main body portion 12a, and a coil spring constituting the spring means 15 is externally inserted into the small diameter portion 12b provided at the lower end portion, and the pin main body portion is formed. The bolt shaft portion 12c extended from the small diameter portion 12b is inserted from the prepared hole 14b in a state where the spring means 15 is compressed by inserting the small diameter portion 12b into the prepared hole 14b while inserting the 12a into the upper hole 14a. , The nut 16 is screwed. In order to facilitate the screwing work of the nut 16, a tool engaging portion 17 such as a hexagonal hole is provided on the upper end portion (top surface of the stopper portion 13) of the pin main body portion 12a.

As shown in FIG. 3C, the regulation pin 12 is arranged so that the axis X of the pin is orthogonal to the axial direction of the support tube 1a, and is held at the protruding position M1 by the spring means 15. The peripheral surface of the stopper portion 13 protruding from the upper surface of the support tube 1a forms a receiving portion 13a extending in parallel with the axis X from the upper surface of the support tube 1a to a predetermined height position, and from the receiving portion 13a. A guide portion 13b that is inclined toward the top of the stopper portion 13 is formed. Therefore, when an external force toward the axial direction of the support tube 1a acts on the guide portion 13b, the regulation pin 12 is configured to be moved to the retracted position M2 against the spring means 15.

The regulation pin 12 has a protruding position M1 defined by the position where the nut 16 abuts on the lower side of the prepared hole 14b, descends from that position, and the spring means 15 of the small diameter portion 12b is the maximum on the upper side of the prepared hole 14b. The retracted position M2 is defined by the limited compression state.

Regarding this point, in the case of the illustrated embodiment, when the retracted position M2 is set, the receiving portion 13a of the stopper portion 13 is moved below the upper surface of the support tube 1a, but the guide portion 13b has an upper end portion. It slightly protrudes from the upper surface of the support tube 1a. However, the moving stroke from the protruding position M1 to the retracted position M2 can be changed by the axial length of the small diameter portion 12b and the number of turns of the coil spring, and when the retracted position M2 is set, the top end of the guide portion 13b is supported. It may be configured to be flush with the upper surface of the tube 1a or immersed in the upper hole 14a.

(Normal action)
As shown in FIGS. 2 and 4, when the scaffolding plate 3 is attached, it is usually planned that the hook means 8 is mounted toward the predetermined position P of the support tube 1a.

As shown in FIG. 4A, when the drop lock 8b is held by the control hole 10 in a lifted state and the hook material 8a having an open lower side faces the predetermined position P as planned, it is upward in that state. It may be mounted on the support tube 1a. Therefore, as shown in FIG. 4B, the hook means 8 is irremovably locked to the support tube 1a by lowering the drop lock 8b and holding the support tube 1a from below. ..

In this state, as shown in FIG. 4C, the receiving portion 13a of the stopper portion 13 of the regulation pin 12 faces the side surface of the hook material 8a with respect to the misalignment movement direction indicated by the arrow NG of the hook means 8. It is locked and the misalignment movement is prevented. That is, even if the hook member 8a tries to move in the axial direction of the support tube 1a, the side surface of the hook member 8a is received by the receiving portion 13a, so that the regulation pin 12 does not move toward the retracted position M2. ..

(Action 1 during unplanned installation)
FIG. 5 shows a case where the hook means 8 is placed on the stopper portion 13 of the regulation pin 12 as an unexpected matter when the scaffold plate 3 is attached.

As shown in FIGS. 5A and 5B, the regulation pin 12 moves to the retracted position M2 against the spring means 15, so that the hook member 8a is covered with the support tube 1a from above. Therefore, as shown by the chain line in FIG. 5A, the hook means 8 can lower the falling lock 8b, whereby the support tube 1a can be held from below, so that the hook means 8 can be held. Is irremovably locked to the support tube 1a even when it is mounted on the regulation pin 12.

Therefore, even if the scaffolding construction work is completed in this state, no particular danger is caused. When the operator notices it, as shown in FIGS. 5C and 5D, the hook means 8 mounted on the regulation pin 12 may be pushed toward the predetermined position P, and the hook means 8 is pushed. Soon, the regulation pin 12 is automatically moved up to the protruding position M1 by the spring means 15, and the stopper portion 13 faces the side surface of the hook member 8a to be positioned and locked.

(Action 2 during unplanned installation)
FIG. 6 shows a case where the hook means 8 is mounted at a position opposite to the predetermined position P among the positions on both sides of the regulation pin 12 as an unplanned case when the scaffold plate 3 is mounted.

As shown in FIGS. 6A and 6B, the hook means 8 mounts the hook material 8a on the support tube 1a, lowers the falling lock 8b, and locks the hook member 8 in a state of holding the lower side of the support tube 1a. is doing.

In order to move the hook means 8 to the predetermined position P from this state, as shown in FIG. 6 (C (D)), the falling lock 8b is slightly raised, the hook means 8 is slightly lifted, and in this state. When the hook means 8 is moved toward the predetermined position P as shown in FIG. 6 (E), the side surface of the hook material 8a presses the guide portion 13b of the stopper portion 13 to be shown in FIG. 6 (F). As a result, the regulation pin 12 is moved down to the retracted position M2, whereby the hook material 8a can pass over the regulation pin 12 and move to the predetermined position P, and as soon as it moves, the regulation pin 12 can be moved. Is automatically moved up to the protruding position M1 by the spring means 15, so that the stopper portion 13 faces the side surface of the hook member 8a and can be positioned and locked.

1 Horizontal material 1a Support pipe 2 Support 3 Scaffolding plate 4 Tightening means 5 Connecting metal fittings 6 Flange 7 Wedge 8 Hooking means 8a Hook material 8b Fall lock 9 Holding pin 10 Control hole 11 Regulation means 12 Regulation pin 12a Pin body 12b Small diameter part 12c Bolt shaft part 13 Stopper part 13a Receiving part 13b Guide part 14a Upper hole 14b Lower hole 15 Spring means 16 Nut 17 Tool engaging part P Predetermined position M1 Protruding position M2 Retracting position

Claims (2)

In a temporary scaffold constructed by mounting a scaffolding plate hook means at a predetermined position (P) in the axial direction of a support pipe installed sideways.
The support tube (1a) is provided with a regulating means (11) for positioning and locking the hook means (8) to the predetermined position (P).
The regulating means is composed of a regulating pin (12) provided with a stopper portion (13) facing the side surface of the hook means (8) mounted at the predetermined position (P).
The regulation pin (12) slides between a protruding position (M1) in which the stopper portion protrudes from the upper surface of the support tube by a predetermined height and a retracting position (M2) in which the stopper portion moves downward from the protruding position. It is freely supported by the support tube, is always held in the protruding position (M1) by the spring means (15), and when a downward external force acts on the stopper portion (13), it is in the retracted position against the spring means. A scaffolding plate positioning locking device in a temporary scaffold, characterized in that it is configured to move to (M2). The regulation pin (12) is arranged so that the axis (X) of the pin is orthogonal to the axial direction of the support tube (1a) and is held at the protruding position (M1) by the spring means (15). Then, the peripheral surface of the stopper portion (13) protruding from the upper surface of the support tube forms a receiving portion (13a) extending in parallel with the axis from the upper surface of the support tube (1a) to a predetermined height position. A guide portion (13b) that inclines from the receiving portion toward the top of the stopper portion is formed.
The guide portion (13b) is characterized by being configured to move the regulating pin to the retracted position (M2) against the spring means when an external force toward the axial direction of the support tube (1a) acts on the guide portion (13b). The positioning and locking device for the scaffolding plate in the temporary scaffolding according to claim 1.

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