JPH0723480Y2 - Telescopic handrail frame - Google Patents

Description

[Detailed Description of the Invention] << Industrial Application Field >> The present invention relates to a handrail frame erected on a cross rail or the like of a scaffolding frame used at a construction site or the like.

《Prior art》 A scaffolding frame is generally constructed by arranging two metal vertical rods in parallel.
A horizontal crosspiece is provided on the upper part of the scaffolding frame, which is fixed by braces and the like, and handrail frames are provided on both sides or one side of the scaffolding construction frame, and a scaffolding board (cloth frame) is erected.

The handrail frame is normally installed on the side portion of the scaffolding plate which is a passage over the length thereof for the safety of the operator. Also, when stairs, etc. are provided vertically inside the scaffolding frame, or when scaffolding boards are horizontally laid between parallel scaffolding frames, only the width (length) of the part that becomes the entrance and exit The handrail frame without the handrail was known.

In addition, the handrail frame is provided with gripping metal fittings at both ends thereof, so that the handrail frame is installed on the cross rail. The cross rail is usually a pipe-shaped circular tube, and the conventional handrail frame has a shape of the holding metal fitting that has a recess opening downward and can be easily placed on the cross rail from above. is there.

<Problems to be solved by the present invention> However, the conventional handrail frame is a handrail frame provided with a full length rail over the length of the scaffolding building frame, that is, the length between the cross rails, or Only the handrail frame was removed except for the handrails for the width (length) of the entrances and exits of the stairs and scaffolding, so the stairs to be provided and the position and width of the scaffolding board to be crossed differ depending on the scale and shape of the scaffolding. However, it was difficult to provide a handrail frame corresponding to it. In other words, the construction of the scaffold construction frame was conversely such that stairs and bridging scaffolding boards were provided in accordance with the conventional handrail frame.

Therefore, there is a problem that the structure of the conventional scaffold is limited.

Further, the conventional gripping member of the handrail frame is simply placed with an inverted recessed shape from above and erected so as not to move due to its own weight made of steel. And, for that reason, there is a possibility of movement in the longitudinal direction of the cross rail, that is, in the width direction of the scaffolding construction frame,
When pushing the handrail frame and the scaffolding board from the side, it was moving within the width of the scaffolding construction frame. Therefore, for example, when stairs are leaned against the handrail frame or scaffolding board from the side or pushed from the horizontal direction, there is a high possibility that the handrail frame or the scaffolding board may be abruptly displaced in the width direction of the scaffolding construction frame. There were many problems.

In this invention, the handrail of the handrail frame is configured to be slidable in the lateral direction, and the width of the portion without the handrail frame can be freely adjusted according to the width of the entrance and exit of the stairs and the bridge between the scaffolding construction frames. The purpose is to get an adjustable handrail frame.

<Means for Solving the Problem> In order to achieve this object, the present invention has a structure of a handrail frame to be erected on a scaffolding construction frame or the like, which is fixed while a fixing frame is fixed to a lower rod. A movable frame is provided on the frame and the lower rod, which is slidable and movable in the lateral direction.

In addition, the structure of the handrail frame erected on the scaffolding construction frame etc. is erected with the fixed frame fixed to the lower rod, and the movable frame that is slidable and movable in the lateral direction is provided on the fixed frame and the lower rod. An extendable handrail frame characterized in that the gripping metal on the side opposite to the fixed frame of the lower rod is a gripping metal having a wedge-shaped body.

<Operation> The handrail of the handrail frame is provided with a movable frame that can be moved in the longitudinal direction of the lower rod, and the length of the handrail is changed with respect to the entire length of the handrail frame (the length of the lower rod). The length of the part without handrails can be changed.

Therefore, it is possible to complete the handrail frame by straddling stairs, a horizontal transfer board, etc. on the part without the handrail and moving the handrail according to the width thereof.

Further, among the grips provided at both ends of the lower rod, the grips on the side opposite to the fixed frame are configured to use a wedge-shaped body to prevent the lower rod from slipping in the width direction of the scaffolding plate.

<< Embodiment >> FIG. 1 is a drawing showing an embodiment of the present invention, that is, a front view of an extendable handrail frame when a movable frame is extended, and FIG. 1 is a front view of an extendable handrail frame when the movable frame is contracted. The description will be made with reference to FIG. 2, FIG. 3 showing an enlarged front surface of the gripping member of the lower rod, and FIG. 4 showing an enlarged side surface of the gripping member of the moving frame.

The telescopic handrail frame 1 is constructed so as to be erected on a horizontal rail such as a scaffolding construction frame and to be erected on both sides or one side of a scaffolding plate (cloth frame).

The structure of the extendable handrail frame 1 is a lower rod 2 having grips 5 at both ends, a fixed frame 3 standing on a part of the lower rod 2, and a slidable movement between the fixed frame 3 and the lower rod 2. And a moving frame 4.

The holding metal fittings 5 attached to both ends of the lower rod 2 are for connecting to the horizontal rails 16 of the scaffolding building frame, and the holding metal fittings 5a on the side opposite to the standing position of the fixed frame 3 are formed by the wedge-shaped body 6. Gripping hardware
It is configured as 5a, and the gripping metal is provided on the standing position side of the fixed frame 3.
Make up 5b.

The grip metal fitting 5a is composed of a metal fitting body 7 and a wedge-shaped body 6.

The wedge-shaped body 6 is a deformed quadrilateral plate-shaped body having a constant thickness.
The modified quadrilateral is a so-called wedge shape in which the widths of opposing sides in the lengthwise direction are different and the two sides are quadrangular with right angles so that the width is gradually narrowed (widened) in the lengthwise direction. To do.
The wedge-shaped body 6 has an upper locking protrusion on a wide upper portion and a lower locking protrusion 15 on a narrow lower portion in the same plane at the same height.

The metal fitting body 7 has at least a pipe gripping space 8 and a wedge-shaped body partial locking space 9.

The metal fitting body 7 has three surfaces, an upper surface, a lower surface, and a back surface (fixed surface), and is formed by bending one plate-shaped body at a substantially right angle. All other surfaces are open. The lower surface and the back surface of the metal fitting body 7 are formed in a flat shape, and a step is formed on the upper surface so that the back surface side is low and the front surface side (insertion port side) is high. Due to this step on the upper surface, the metal fitting body 7 of this embodiment forms a pipe gripping space 8 and a wedge-shaped body partial locking space 9.

The pipe gripping space 8 is a space formed between a lower upper surface and a lower surface, and the internal height is set to have a height slightly larger than the diameter of the horizontal rail 16 connected to the gripping metal 5a, and from the back surface to the step. Is formed to be narrower than the diameter of the cross rail 16.

The wedge-shaped body partial locking space 9 is a space formed between a high upper surface and a temporary flat surface obtained by directly extending the lower upper surface toward the insertion side.

In order to insert the wedge-shaped body 6, an upper insertion hole is formed in the upper surface of the metal fitting body 7, and a lower insertion hole is formed in the lower surface.

The upper insertion hole is longer and narrower than the lower insertion hole. This difference in length is because the wedge-shaped body 6 is inserted from the upper surface, and the length of the upper-surface insertion hole may be a little smaller than the width of the upper portion of the wedge-shaped body 6 or about the same.

Regarding the width, the width of the upper insertion hole is formed to be wider than the thickness of the wedge-shaped body 6 and narrower than the thickness of the upper locking projection and the lower locking projection including the thickness of the wedge-shaped body 6. Is formed wider than the thickness of the wedge-shaped body 6.

Therefore, the lower engagement protrusion of the wedge-shaped body 6 can be inserted into and removed from the lower insertion hole of the metal fitting body 7, but cannot be removed from the upper insertion hole. Therefore, when attempting to connect the gripping metal 5a to the horizontal rail 16 or the like, pull out the wedge-shaped body 6 upward,
If the lower portion of the wedge-shaped body 6 is positioned in the wedge-shaped body partial locking space 9 below, there is a passage to the pipe gripping space 8. Therefore, the wedge-shaped body 6 is inserted into the horizontal rail 16 as it is from above. The horizontal rail 16 is connected and fixed to the holding metal fitting 5a of the telescopic handrail frame 1 by driving.

When the connection with the horizontal rail 16 is released, the wedge-shaped body 6 is
Hit and pull up to open the drawer passage of the horizontal rail 16 and disconnect it from the horizontal rail 16. At this time, since the lower locking protrusion of the wedge-shaped body 6 is caught in the upper insertion hole, it cannot be disengaged from the metal fitting body 7.

The holding metal fitting 5b of the lower rod 2 on the side of the fixed frame 3 is locked to the horizontal rail 16 from above by a concave portion opening downward.

The fixed frame 3 is erected on one side of the lower rod 2. The fixed frame 3 is composed of two vertical rods 3a standing upright at a right angle to the lower rod 2.
And two horizontal rods 3b parallel to the lower rod 2 are fixed to each other. The horizontal rod 3b is a hollow tube, and is appropriate depending on the size of the horizontal moving rod of the moving frame 4 within the hollow tube.

The moving frame 4 is formed by fixing a vertical moving frame 4a and a horizontal moving frame 4b perpendicular to the vertical moving frame 4a, and a grip metal fitting 10 that fits to the outer peripheral surface of the lower rod 2 is provided at the lower part of the vertical moving frame 4a. It is fixed to the lower rod 2 by 6. The grip 10 has an inverted U shape and is configured to grip the lower rod 2 from above. In this embodiment, the moving frame 4 has one vertical moving frame 4a, but it may have several moving frames. The lateral movement frame 4b is provided at the same position as the lateral rod 3b of the fixed frame 3 and slidably fitted in the lateral rod 3b of the fixed frame 3.

A grip 11 is fixedly provided at an end of the upper rod of the horizontal rod 3b of the fixed frame 3, that is, above the position of the grip 5b of the lower rod 2.
It is configured so that it can be connected to the cross rail 17 outside the scaffolding frame.

The structure of the grip 11 is as follows.

The grip 11 includes a body 12 and a wedge-shaped body 6.

The metal fitting body 12 is fixed to the end of the U-shaped metal fitting 13 in this embodiment, and is fixed to the horizontal rod 3b by the U-shaped metal fitting 13.

The metal fitting body 12 is formed by bending a plate-like body into a substantially deformed S-shape.

The plate-shaped body that constitutes the metal fitting body 12 is bent from the left side surface at a substantially right angle to the back surface, which is an upper surface, and further at a right angle to the right side surface, and is bent further outward at a right angle at the lower opening surface to form a short lower surface. Bending upward at a right angle to form a locking surface 14 parallel to the right side surface.

The pipe holding space of the holding metal fitting 11 is a space surrounded by the left side surface, the back surface, and the right side surface. Further, the wedge-shaped body partial locking space is a space between the right side surface, the lower surface and the locking surface 14.

On each of these surfaces, three insertion holes for inserting the wedge-shaped body 6 are formed on the opening side. The left side insertion hole and the right side insertion hole have the same width and are wider than the thickness of the wedge-shaped body 6 including the lower engagement protrusions 15. The width of the engagement surface insertion hole is the upper engagement protrusion of the wedge-shaped body 6 and the lower engagement protrusion. Narrower than the thickness including the locking projections 15. In this embodiment, the length of each insertion hole is made longer in this order. In the metal fitting body 12, the opening surface side of the plate-shaped body is combined with the inclined surface shape of the wedge-shaped body 6 so that the engagement surface side of the wedge-shaped body 6 on the insertion port side is formed to be slightly longer.

The gripping member 11 inserts the wedge-shaped body 6 from the locking surface side, and the lower locking projection 15 can be inserted / removed in the left side insertion hole and the right side insertion hole, but cannot be removed from the locking surface insertion hole. Absent. Therefore, when connecting to the crosspiece 16 or the like, the wedge-shaped body 6 is pulled out to the locking surface side, the lower locking projection 15 of the wedge-shaped body 6 is hooked in the locking-surface insertion hole, and the lower part of the wedge-shaped body 6 is wedge-shaped. Position it in the body part locking space and open the opening side of the pipe gripping space. At this time, the wedge-shaped body 6 is not separated from the metal fitting body 12 by the lower locking projection 15. After being inserted into the pipe holding space such as the horizontal rail 16, the wedge-shaped body 6 is driven from the locking surface side to lock the horizontal rail 16 or the like.

When removing from the horizontal rail 16, strike the wedge-shaped body 6 from the left side surface side,
Loosen the wedge-shaped body 6, position the lower part of the wedge-shaped body 6 in the wedge-shaped body partial locking space, and remove the pipe.

This telescopic handrail frame 1 is a holding metal fitting under the vertical movement frame 4a.
When the wedge-shaped body 6 of 10 is removed, the movable frame 4 becomes movable along the lower rod 2. It is appropriately moved and stopped at an appropriate position according to the width of the stairs or the bridge, the wedge-shaped body 6 is inserted into the grip metal fitting 10, and the moving frame 4 is fixed to the lower rod 2.

Further, the grip 11 of the fixed frame 3 is fixed to a pipe or the like outside the scaffold plate.

<Effect of device> Therefore, according to this device, since only the handrail of the handrail frame erected on the scaffolding frame can be expanded and contracted very easily, the stairs attached to the scaffolding frame and the crossover scaffolding can be achieved. There is an effect that the length of the handrail can be adjusted according to the position and width of the plate or the like.

In addition, since the grip of the lower rod has a wedge-shaped structure, the lower rod and the horizontal rail can be securely connected, and the handrail frame does not shift even if a lateral force is applied, which is stable. There is.

[Brief description of drawings]

FIG. 1 shows an embodiment of the present invention. FIG. 1 is a front view of an extended handrail frame when the handrail is extended, and FIG. 2 is a front view of the extended handrail frame when the handrail is contracted. Fig. 3 and Fig. 3 are enlarged front views of the grip of the lower rod, and Fig. 4 is an enlarged side view of the grip of the moving frame. 1 ... Telescopic handrail frame, 2 ... Lower rod, 3 ... Fixed frame, 3a ... Vertical rod of fixed frame, 3b ... Horizontal rod of fixed frame, 4 ... Moving frame, 4a ... Vertical moving rod, 4b ... Horizontal moving rod, 5 ... Lower metal gripping hardware, 5a ... Gripping metal (with wedge-shaped body), 5b ... Gripping metal, 6 ... Wedge-shaped body, 7
... metal fitting body, 8 ... pipe gripping space, 9 ... wedge-shaped body part locking space, 10 ... moving frame gripping metal fitting, 11 ... fixed frame gripping metal fitting, 12 ... metal fitting body, 13 ... U-shaped metal fitting, 14 ... metal fitting body Locking surface, 15 ... lower locking protrusion of wedge-shaped body, 16 ... horizontal rail, 17 ... horizontal rail (horizontal rail between outer frame).

 ─────────────────────────────────────────────────── ───Continued from the front page (56) References Microfilm (JP, U) of the contents and drawings attached to the application for Japanese Patent Application No. 58-74185 (No. 59-179942). A microfilm (JP, U) of the contents of the specification and drawings attached to the application for Japanese Utility Model Application No. Sho 62-69688 (No. Sho 63-179354)

Claims (2)

[Scope of utility model registration request] 1. A handrail frame erected on a scaffolding frame or the like,
An extendable handrail frame characterized in that a fixed frame is erected and fixed on the lower rod, and a movable frame that is slidable and horizontally movable is provided on the fixed frame and the lower rod. 2. A handrail frame installed on a scaffolding frame, etc.
The fixed frame is fixedly erected on the lower rod, and a movable frame that is slidable and movable in the horizontal direction is provided on the fixed frame and the lower rod, and the holding metal on the side opposite to the fixed frame of the lower rod is wedge-shaped. A telescopic handrail frame characterized by being a gripping metal having a body.