JPH10266556A - Scaffolding board - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make work safe and simple by a method wherein a lock part is provided at the center of the width of each longitudinal end of a scaffolding board and engaging heads of the lock parts are located on the center side of the board in the longitudinal direction thereof. SOLUTION: When a scaffolding board 1 is engaged with a horizontal rod 100, an engaging head 51a is rotated to disengage the head 51a from a horizontal body end surface 50f. If a worker removes his hand from the head 51a, a lock body is urged to the longitudinal end side of the board 1 by the urging force of a spring 51d so that an expanded portion 51b of the lock body protrudes toward the rod 100 to provide a locked condition. If the worker holds the head 51b and pulls it against the spring 51d and rotates it so that the head 51b contacts the surface 50f, the lock part is unlocked. Hence locking and unlocking can be easily made and the scaffolding board can be removed by one worker so that the work can be performed safely, surely, easily and rapidly.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a scaffold plate (cloth frame) for a rolling tower or a scaffold plate (cloth frame) for a framed scaffold used at a construction site.

[0002]

2. Description of the Related Art A scaffold plate of a rolling tower and a scaffold plate of a frame scaffold used in a construction site are generally made of a steel plate whose surface on the walking side is formed so as not to slip. It can be locked to a horizontal rod such as a building frame by a grip metal.

[0003] The grip fittings are engaged with horizontal rods such as building frames by fitting recesses which open downward. However, there is a possibility that the fittings may be blown off by strong cross wind or the like. It is publicly known that a concave portion is provided with a protruding engagement cam.

When the engaging cam of the conventional grip is locked to the horizontal rod, the engaging cam naturally falls due to a slight shock at the time of the locking, and the lower end of the engaging cam projects into the fitting recess. The horizontal rod is grasped from below, and has the function of not flying even if a force is applied from below. Then, when trying to remove the scaffold plate from the horizontal rod, the operator lifts the lower end of the engaging cam of the gripper from below the scaffold plate with a hand or the like, and lifts the engaging cam as it is. While being lifted, the scaffold was lifted up to remove the scaffold from the horizontal rod.

[0005] However, with such a grip, when the scaffold plate is removed from the horizontal rod, unless the operator keeps lifting the engaging cam from under the scaffold plate, the engaging cam falls and the horizontal rod is again grasped. As a result, there is a problem that the grip metal cannot be removed, and at least two workers are required for disassembling a framed scaffold or the like from the length of a normal scaffold plate.

In order to solve such problems, the present inventor and the applicant of the present application disclosed in Japanese Utility Model Registration No. 2097801, "In a scaffold for a scaffolding plate, an engagement that can be freely projected into a fitting recess of the scaffold. A cam, and the engaging cam is movably locked to the locking projection, and the locking hole is a U-shaped long hole curved in a direction opposite to the semicircular bending direction of the fitting concave portion;
A lock hole having a guide hole slightly curved in a direction opposite to the U-shape of the lock hole, the lock hole having a lock state in which the lower end of the engagement cam is locked in a protruding state into the fitting recess; Part, an unlocked locking end that locks in an unlocked state in which the upper end of the engaging cam projects into the fitting recess, and a temporary locking state that locks in a temporarily locked state in which the engaging cam does not project into the fitting recess. A scaffold plate grip, wherein the locking portion is formed in a convex shape in the direction of the inwardly bending direction of a U-shape, and is a locking hole of an engaging cam having a concave portion adjacent to the temporary locking portion. Metal fittings ".

[0007]

However, in the case of a normal scaffold plate, the length is longer than a range where one person can reach. It is necessary to remove each of the four clamps or the engaging cams of the clamps, two at each end, one for each worker. It is necessary to go to the end of the work to perform the work, and there is a problem that the difficulty remains in order to perform the work easily and safely.

[0008]

In order to solve the problem, a rod grip provided at both ends of a scaffold plate has end frames fixed to both end portions of the scaffold plate in a width direction, and each end frame. A scaffold plate comprising: a plurality of grips fixed to the end of the scaffold plate in the width direction end; and a lock portion provided singly on each end frame.

[0009] Rod grips provided at both ends in the longitudinal direction of the scaffold plate are end frames fixed to both ends in the longitudinal direction of the scaffold plate in the width direction, and end portions in the width direction of the scaffold plate fixed to each end frame. And a lock portion provided singly at the center of each end frame, and the lock portion comprises a lock hanger and a lock body. The locking state in which the locking body urged in the direction of the end of the stop scaffolding plate is positioned below the locked rod, and from below the locked rod against the urging force in the direction of the end of the scaffolding plate. A scaffold plate characterized by being able to freely take the unlocked state that has been separated is proposed.

[0010]

FIG. 1 is a plan view of a scaffold plate according to an embodiment of the present invention, FIG. 2 is a front view thereof, and FIG.
FIG. 3, which shows a cross section taken along line A, FIG. 4, which shows the front of the gripper, FIG. 5, which shows the locked front of the rod grip, FIG. 6, which also shows the unlocked front of the rod grip, and FIG. 7, FIG. 8 showing the front of the lock body, and FIG. 9 which is an explanatory front view of the lock hanger and the lock body.

A scaffold 1 according to an embodiment of the present invention comprises:
It has a length of about 1800 mm, and is provided with rod grips 2 at both ends in the longitudinal direction.

The rod grips 2 provided at both ends in the longitudinal direction of the scaffold plate 1 include an end frame 3 provided over the entire width of both ends in the longitudinal direction, a grip 4 provided on the end frame 3, and a lock portion. 5

The end frame 3 has a mounting portion 30 formed by a groove for sandwiching both ends of the scaffold plate 1 from above and below over the entire width.
Then, a hollow portion 31 is provided over the entire width of the scaffold plate 1 on the end side of the mounting portion 30. An upper engaging concave portion 32 is provided on the upper surface of the hollow portion 31 so as to be wider toward the lower side, and the lower engaging concave portion 3 is wider on the lower surface at a position symmetrical to the upper engaging concave portion 32.
3 is provided.

A grip 4 is provided in the upper engagement recess 32 and the lower engagement recess 33 of the end frame 3. Two gripping brackets 4 are provided on the left and right sides in the width direction of the scaffold plate of each end frame 3. The grip 4 includes a locking recess 40 and a fixed portion 41 formed by integral molding. Hook recess 40
Is a concave portion having a semicircular shape that is open downward and viewed from the front, and is hooked by a hooking recess 40 to a horizontal rod 100 such as a building frame.

The fixing portion 41 of the grip metal 4 has a concave portion, and the front surface of the concave portion forms engaging convex portions corresponding to the upper engaging concave portion 32 and the lower engaging concave portion 33 of the end frame 3, respectively. I do. That is, the upper engagement convex portion 41a which becomes wider downward is formed on the upper inner surface of the concave inner wall of the fixing portion 41,
A lower engagement convex portion 41b is formed on the lower inner surface so as to become wider as going upward. The fixing portion 41 of the gripping metal 4 slides from the end of the end frame 3 to the upper engaging concave portion 32 and the lower engaging concave portion 33 of the end frame 3 by the shapes of the upper engaging convex portion 41a and the lower engaging convex portion 41b. And fixed to the end frame 3 by blind rivets 42 at two fixed positions on the end side in the width direction of the scaffold plate.

A lock 5 is provided at the center of the end frame 3. The lock portion 5 includes a lock hanger 50 fitted and fixed to the end frame 3 and a lock body 51 provided on the lock hanger 50.

On the lock hanger 50, an engaging projection 50a that becomes wider upward is formed on the upper surface of the horizontal body 50b.
The lock body locking plate 50c is formed on the lower surface. The lock body hole 50 which is a circular hole is formed in the lock body locking plate 50c.
d is provided substantially at the center. A rectangular cylindrical casing 50e is provided on the lower surface of the horizontal body 50b, with the hollow part being horizontal, on the scaffold plate end side of the lock body hole 50d of the lock body locking body 50c. 50f is an end face of the horizontal body 50b on the center side of the scaffold plate.

The lock body 51 includes an integrally formed locking head 51a, an enlarged portion 51b, and a spring locking portion 51c.
And a spring 51d. The spring locking portion 51c of the lock body 51 is a cylindrical body, and is inserted into the lock body hole 50c of the lock hanger 50 with a gap. The locking head 51a of the lock body 51 is
0c, the spring locking portion 51
c, the longitudinal dimension is larger than the diameter of the lock body hole 50d, and is rotated by 90 degrees to abut and lock on the end face 50f of the horizontal body 50b. The entire lock body 51 can be positioned at the center of the scaffold 1 against the urging force of the spring 51d. The enlarged portion 51b of the lock body 51 is a substantially quadrangular prism having a ridge shaved, and the small width of the quadrangular prism is reduced by the spring locking portion 51b.
c has the same diameter as the diameter of the cylinder,
Formed larger than the diameter of Spring locking part 51
c, a spring 51d is locked.
Is located between the side surface of the end of the scaffold plate of the lock body locking body 50c and the enlarged portion 51b of the lock body 51, and urges the enlarged portion 51b toward the end of the scaffold plate, thereby causing the lock body 51 to be mounted on the scaffold. It is urged toward the plate edge.

Next, the operation of the embodiment of the present invention will be described. When the scaffold plate 1 is to be engaged with the horizontal rod 100 of the rolling tower or the building frame, the locking body 51 of the locking portion 5 is previously pulled by pulling the locking head 51a against the urging force of the spring 51d. The portion 51a is locked to the end surface 50f of the horizontal body 50b of the lock hanger 50 on the side of the central portion of the scaffold plate, and is unlocked (see FIG. 6).

Next, by rotating the locking head 51a by about 90 degrees, the locking head 51a is moved to the horizontal body end surface 50.
When the lock is released from f and the operator releases his / her hand, the entire lock body 51 is urged toward the longitudinal end of the scaffold plate by the urging force of the spring 51d. The enlarged part 51b of the lock body 51 is a rolling tower, a horizontal rod 100 of a building frame.
Projecting to a position below and stopping to enter the locked state (FIG. 5).
And FIG. 9). The locked state is such that the horizontal rod 100 is gripped by the retaining recess 40 of the metal fitting 4 and the enlarged portion 51 of the lock body 51.
b, the scaffold plate 1 is
00, it is firmly installed.

Next, a case where the scaffold 1 is removed from the rolling tower or the horizontal bar 100 of the building frame will be described. The worker holds the locking head 51a of the lock body 51 of the one lock portion 5 at the center position of both ends in the longitudinal direction of the scaffold plate 1,
Pulling against the urging force of the spring 51d, the locking head 51
is rotated by about 90 degrees to lock the locking head 51a against the horizontal body end face 50f. In this state, the locked state of the lock unit 5 is released.

Similarly, the locked state of the other lock portion 5 is released, and the scaffold plate 1 can be removed from the horizontal rod 100.

[0023]

According to the present invention, one lock portion is provided at each of the center portions in the width direction on both sides in the longitudinal direction of the scaffold plate, and the locking head of the lock portion is located at the center portion in the longitudinal direction of the scaffold plate. Can be easily performed, and the removal of the scaffold plate can be performed safely, reliably, very simply, and quickly by one operator.

[Brief description of the drawings]

FIG. 1 is a plan view of a scaffold plate showing an embodiment of the present invention.

FIG. 2 is a front view of the same scaffold plate.

FIG. 3 is a sectional view taken along line AA of FIG. 1 (locked state).

FIG. 4 is a front view of a grip metal.

FIG. 5 is a front view of a locked state of a rod grip portion.

FIG. 6 is a front view of an unlocked state of the rod grip portion.

FIG. 7 shows the front of the rock hanger

FIG. 8 is a front view of the lock body.

FIG. 9 is an explanatory front view of the locked state of the lock unit.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Scaffold board 2 Rod grip part 3 End frame 30 Mounting part 31 Hollow part 32 Upper engaging part 33 Lower engaging part 4 Grasping bracket 40 Hook concave part 41 Fixed part 41a Upper engaging convex part 41b Lower engaging concave part 42 Blind rivet Reference Signs List 5 lock portion 50 lock hanger 50a engagement convex portion 50b horizontal plate 50c lock body locking plate 50d lock body hole 50e casing 50f center plate side end surface of horizontal plate-like scaffold plate 51 lock body 51a locking head 51b Expanding part 51c Spring locking part 51d Spring

Claims (2)

[Claims] 1. A rod grip provided at both ends of a scaffold plate,
An end frame fixed to both end portions of the scaffold plate in the width direction, a plurality of grips fixed to each end frame and provided at a plurality of end portions in the width direction of the scaffold plate, and a lock portion provided singly on each end frame. A scaffold plate characterized by that: 2. An end frame fixed to both ends in the longitudinal direction of the scaffold plate in the width direction, and rod grips provided at both ends in the longitudinal direction of the scaffold plate; A lock hanger and a lock body; a lock hanger and a lock body, wherein the lock hanger comprises a lock hanger and a lock body provided singly at the center of each end frame; The locked state in which the locking body is locked below and is biased toward the end of the scaffold plate below the locked rod, and the locked body is locked against the biasing force toward the end of the scaffold plate. A scaffold plate capable of freely taking an unlocked state separated from below.