JPH08128193A - Scaffold board and metal fixture therefor - Google Patents

Abstract

PURPOSE: To make it possible to easily carry out removing work from a construction bracket provided to a scaffold by oneself. CONSTITUTION: A downward circular holding section 1a in which a bracket is fitted is provided to a metal fixture main body 1, a circular receiving section 3a bearing the bracket is provided to a bearing pin 2 provided to a side position thereof, a horizontally moving arm 3 turned and energized outward is pivoted, and a vertically moving arm 6 turned and energized downward is pivoted on a bearing pin 5 provided to an upward position. When it is waited and watched for construction, the horizontally moving arm 3 is kept in an outward turning position in a state that the vertically moving arm 6 is put thereon, when it is constructed, if the bracket is inserted in the circular holding section 1a, the horizontally moving arm 3 is turned inward by its movement, and the bracket is held by the circular receiving section 3a and circular holding section 1a. The vertically moving arm 6 is further turned downward, and both arms 3 and 6 are interlocked with each other to fix their holding state. When it is removed, the vertically moving arm 6 is jumped up.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improved scaffolding board which is detachably installed on a scaffolding turret for civil engineering and construction work.

[0002]

2. Description of the Related Art FIG. 2 shows an assembled state of a scaffolding turret. This well-known scaffolding turret 50 is constructed by arranging gate-shaped pipe scaffolding units 51 upright at a predetermined interval, and adjoining scaffolding units 51, 51 are crossed with each other in an X shape.
And are connected to each other. On the other hand, the metal scaffolding plate 60 has a well-known structure in which a homing-processed iron plate or a net-shaped molded product made of a metal plate is stretched over a rectangular frame as shown in FIG. And the scaffolding board 60
13 to 15, two hook-like fixing metal fittings 61 shown in FIGS. 13 to 15 are fixed by welding or caulking. The scaffolding plate 60 is configured so that the fixing brackets 61 at both ends are hooked on a pipe 53 (hereinafter, referred to as a bracket) that constitutes the top side of the gate-shaped scaffolding unit 51, so that the scaffolding plate 60 is prevented from slipping off. . Needless to say,
Since the scaffolding plate 60 plays an extremely important role in protecting the safety of the worker who is working in a high place, it is not possible for the scaffolding plate 60 to come off the bracket 53 by some external force. Therefore, the gripping mechanism of the bracket 53 is assembled to the conventional fixing fitting 61 shown in FIGS. 13 to 15. Reference numeral 62 denotes a main body of the fixing bracket 61, which includes a downward arcuate grip portion 62a for inserting at least the upper half portion of the bracket 53. Two support pins 63 and 64 are provided laterally at upper and lower sides of the arc-shaped grip portion 62a at predetermined intervals. Reference numeral 65 is a sliding member which is guided by the two support pins 63 and 64 and is vertically movable so as to draw an arc.
An arcuate receiving portion 65a that abuts on the lower half portion is provided.
The sliding member 65 is provided with arc-shaped guide grooves 66 and 67 into which the two support pins 63 and 64 are loosely fitted. Then, the central portion of the guide groove 66 and the lower end portion of the guide groove 67 have recesses 66 for locking the support pins 63 and 64, respectively.
a and 67a are provided. Next, the operation of the fixing bracket 61 will be described. Prior to the installation of the scaffolding plate 60, the sliding member 6
When 5 is completely pulled up as shown in FIG. 13, the lower support pin 64 is caught in the recess 67a of the guide groove 67 and is fixed at this pulling position. In this state, the upper end portion of the arcuate receiving portion 65a slightly protrudes inside the arcuate grip portion 62a to form a protruding portion a. In addition, the lower end portion is located outside the arcuate grip portion 62a. When the arcuate grip portion 62a of the main body 62 is pressed onto the bracket 53 in order to install the scaffolding plate 60, the upper surface of the bracket 53 pushes the protruding portion a of the sliding member 65, and this movement causes The support pin 64 is disengaged from the recess 67a, and the sliding member 65 moves to the complete drop position shown in FIG. As a result, the bracket 53 has the arcuate grip portion 6
By the cooperation of the 2a and the arcuate receiving portion 65a, it is firmly gripped, and the risk of the scaffolding plate 60 coming off from the bracket 53 is surely eliminated. And the used scaffolding plate 6
When removing 0, as shown in FIG. 15, if the sliding member 65 is pulled up halfway, the recess 66a of the upper guide groove 66 is formed.
Since the support pin 63 is caught on the sliding member 65, the sliding member 65 is locked at this position. At this time, since the lower end portion of the sliding member 65 is moved to the outside of the arcuate grip portion 62a,
The scaffolding board 60 is lifted and the fixing bracket 61 is attached to the bracket 53
Can be removed from.

[0003]

However, the conventional fixing metal fitting 61 still has a large problem to be improved in terms of usability. Is a long and heavy scaffolding plate 6
When 0 is to be removed by one person, first, the sliding member 65 of the fixing fitting 61 on one end side of the scaffolding plate 60 is moved to the removing position. Next, move to the other end of the scaffolding plate 60,
The sliding member 65 of the fixing fitting 61 on the other end side is also moved to the removal position. Then, when trying to lift the scaffolding board 60,
Since the state in which the support pin 63 is caught in the recess 66a is considerably unstable, the sliding member 65, which is set to the folding-angle removal position, falls due to vibration or the like during lifting, and the state shown in FIG.
There is a high possibility that the bracket will return to the bracket gripping position shown in FIG. In order to prevent this problem from occurring, after removing the fixing bracket 61 on one end side, the operator lifts the heavy scaffolding plate 60 by supporting it with his / her hand or head, and completely removes it from the bracket 53. It was necessary to perform an extremely rigorous separation technique such as removing the fixing bracket 61 on the other end while keeping it. Otherwise, two people would have to remove the fixing brackets 61 at both ends of the scaffolding plate 60 at the same time, which was very uneconomical in terms of work management. Therefore, an object of the present invention is to provide a scaffolding plate and a fixing member for the scaffolding plate so that even one person can easily and securely perform the removal work.

[0004]

In order to achieve the above object, a scaffolding plate according to the present invention is constructed between a pair of pipe brackets mounted on a scaffolding turret, and both ends thereof are provided at both ends thereof. A fixing fitting for detachably gripping the bracket is fixed, and the fixing fitting includes a main body 1 having a downward arcuate gripping portion 1a into which at least an upper half of the bracket is inserted, and the arcuate shape. A left-right moving arm 3 having an arcuate receiving portion 3a capable of swinging left and right around a support pin 2 provided at a side portion of the grasping portion 1a, and a location above the arcuate grasping portion 1a. A vertical movement arm 6 capable of swinging up and down around a support pin 5 provided at the left and right movement arms 3, the left and right movement arms 3 are urged to rotate outward so as to separate the arcuate receiving portion 3a from the bracket, The vertical movement arm 6 is
The tip end side of the scaffolding plate is urged to rotate downward, and when the scaffolding board is standing by, the left-right moving arm 3 is rotated outward while the vertical moving arm 6 is mounted on the upper end of the scaffolding plate to release the grip. Position, and the arcuate gripping portion 1 when the scaffolding board is installed.
When a is pressed onto the bracket, the left-right moving arm 3 that receives this movement rotates inward, and the arcuate receiving portion 3a
Is brought into contact with the lower half of the bracket so that the fixing bracket grips the bracket, and the vertical movement arm 6 released from the restraint by the left and right movement arm 3 further pivots downward so that both arms 3 and 6 respectively. The provided engaged portion 3c and the engaging portion 6c are engaged with each other to fix the gripped state, and when the scaffolding plate is removed, the vertically moving arm 6 is forcibly turned upward to grasp the gripped state. It was configured to be solved. Then, the left and right moving arms 3 and the up and down moving arms 6 are urged to rotate outward and downward respectively by setting the mutual positional relationship between the respective support pins 2 and 5 and the respective centers of gravity. Good. In addition, the bulging portion b is provided for reducing the obstacle to the work of galvanizing the assembled fixing metal fittings at a plurality of positions on the back side of the left and right moving arm 3 and the up and down moving arm 6 and facilitating the rotation. Should be provided respectively.

[0005]

When the scaffolding board is in the standing-by state (normal state), the left and right moving arms 3 of the fixing bracket are urged to rotate outwardly separating the arcuate receiving portion 3a from the bracket. The bracket can be inserted into the downward arcuate grip portion 1a provided. The up-and-down moving arm 6 that is urged to rotate downward has its tip end side on the left-right moving arm 3
It is in a state where it is mounted on top of. When the scaffold plate is erected, if the arcuate grip portion 1a of the main body 1 is pressed onto the bracket, the left-right moving arm 3 that has received this movement is turned inward, and the arcuate receiving portion 3a is the bracket. Is abutted on the lower half side. As a result, the arcuate grip portion 1a and the arcuate receiving portion 3a work together to grip the bracket. At the same time, since the upper end side of the vertical movement arm 6 rotates outward, the vertical movement arm 6 moves to the left and right movement arm 3
Is released, and further downwardly rotated, the engaged portions 3c and the engaging portions 6c respectively provided on the arms 3 and 6 are engaged with each other, and the gripped state is reliably fixed. . When the scaffolding plate is removed, if the vertically moving arm 6 is forcibly rotated upward, the left and right moving arm 3 disengaged from this arm is automatically rotated outward, and the above-mentioned gripping state is obtained. It is securely released, and the fixture returns to the erection standby state. The left and right moving arms 3 and the up and down moving arms 6 are provided with respective support pins 2
Depending on the way of setting the relative position between the position of the center of gravity and the position of the center of gravity of each of them, they are urged to rotate outward and downward, respectively.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the fixing metal fitting according to the present invention will be described below with reference to FIGS. As shown in FIGS. 3 and 4, the metal fixing bracket A1 of this embodiment, in which two scaffolding plates 60 shown in FIG. 1 are attached to each of the two ends in the longitudinal direction, is a hook-shaped thick plate. The main body 1 is provided. As shown in FIG. 2, the main body 1 is provided with a downward arcuate grip portion 1a into which at least the upper half of a bracket 53 made of a pipe and provided at a predetermined interval on a scaffolding turret can be fitted. There is. The base end portion (right end in FIGS. 3 and 4) of the main body 1 is welded or riveted to the side end of the scaffolding plate 60 in the longitudinal direction.

The main body 1 is provided with a first support pin 2 projecting laterally (at the base end side) of the arcuate grip portion 1a. The support pin 2 has a vertically oriented arc plate-shaped right and left. The moving arm 3 is pivotally supported at a position slightly below. An arcuate receiving portion 3 a that supports the lower half of the bracket 53 is provided inside the left-right movement arm 3. A cutout portion 3b is provided on the outer side of the left-right movement arm 3 above the support pin 2. By disposing a stop pin 4 projecting from the main body 1 in the cutout portion 3b, the turning range of the left-right moving arm 3 is restricted. In addition, a recessed arc-shaped engaged portion 3c is provided at the upper end of the left-right moving arm 3. The left-right moving arm 3 is rotationally biased in a direction (outward direction) in which the arcuate receiving portion 3 a is separated from the bracket 53, based on the mutual positional relationship between the center of gravity of the arm 3 and the support pin 2 and the stop pin 4. .

A second support pin 5 is provided so as to project above the arcuate grip portion 1a. A base end side of a vertically moving arm 6 having a substantially rectangular plate shape is pivotally supported by the support pin 5. A projecting arc-shaped engaging portion 6c is formed on the tip end side of the vertical moving arm 6 to enable engagement and disengagement with the engaged portion 3c of the horizontal moving arm 3 as described later. A knob 6a is provided on the upper side of the vertically movable arm 6, and locking claws 6b and 6d (see FIG. 4) are provided at the lower base end and the upper end, respectively, so as to project. The two locking claws 6b and 6d are engaged with the upper end of the left and right moving arm 3 to restrict the turning ranges of the left and right moving arm 3 and the up and down moving arm 6 from each other.

The vertical movement arm 6 is urged to rotate downward due to the positional relationship between its center of gravity and the support pin 5. Then, when the vertical movement arm 6 is forcibly rotated upward by the knob 6a, as shown in FIG.
The rotation is stopped by hitting the stop pin 7 protruding from the.

Next, the operation of the above configuration will be described. When the scaffolding board 60 is in a standby state, the fixing brackets A1 are outwardly directed to the left and right moving arms 3 so as to separate the arcuate receiving portions 3a from the brackets 53, as shown in FIGS. It is urged to rotate. The tip end side of the vertically movable arm 6 which is urged to rotate downward rides on the upper end of the left and right moving arm 3. In this standby state, the upper end portion of the arcuate receiving portion 3a slightly protrudes inside the arcuate grip portion 1a of the main body 1 to form a protruding portion a. In this state, even if the scaffolding plate 60 is swung up and down, or given a vibration,
Unlike the prior art, since the standby state is reliably held, the bracket 5 is attached to the arcuate grip portion 1a of the main body 1.
3 can be inserted without any trouble.

When the scaffolding plate 60 is erected, when the scaffolding plate 60 is bridged between the pair of brackets 53, 53 provided on the scaffolding turret, the bracket 53 is inserted into each of the arcuate grip portions 1a of the respective fixing brackets A1. Be fitted. Along with that, the bracket 5
Since the upper surface of 3 pushes the protruding portion a of the left-right moving arm 3 protruding into the arcuate grip portion 1a, the left-right moving arm 3
Has its arcuate receiving portion 3a rotated inward so as not to come close to the bracket 53 and contacting the lower half of the bracket 53,
On the other hand, the upper end side is rotated outward. As a result, the vertical movement arm 6 is released from the restraint by the horizontal movement arm 3 and further rotated downward, so that the engaging portion 6c at the tip of the vertical movement arm 6 moves to the left and right as shown in FIGS. Since it engages with the engaged portion 3c at the upper end of the moving arm 3, the left-right moving arm 3 is securely fixed to the above-mentioned inward turning position.

Thus, each fixing member A1 has its main body 1
The arcuate gripping portion 1a provided on the above and the arcuate receiving portion 3a provided on the left and right moving arm 3 cooperate to ensure that the bracket 53 is gripped, and this gripping state is the above-described engagement. Will be reliably maintained by.

When the used scaffolding plate 60 is removed, the vertical movement arm 6 of each fixing member A1 is forcibly rotated upward, and the left and right movement arm 3 is released from the above engagement state with the vertical movement arm 6. Because of this, it naturally returns to the outward turning position. Then, the up-and-down moving arm 6 naturally rotates downward by unwinding the upward rotation state, and each fixing bracket A1 surely returns to the standing-by-standby state of the scaffolding board 60 by itself.

Therefore, when the scaffolding plate 60 is lifted, each fixing metal fitting A1 is kept in a state where the holding of each bracket 53 is surely released. Therefore, a series of work for removing the scaffolding plate 60 is described at the beginning. Unlike the prior art, it can be finished very easily, safely and quickly by only one operator.

Next, FIGS. 8 and 9 show the shapes of the left and right moving arms 3 and the up and down moving arms 6 on the back side. On the back surface side of each, punched bulges b are provided at the peripheral edge of the shaft hole through which the support pins 2 and 5 are inserted and at a plurality of locations on the flat surface. The bulging portion b plays a role of creating a gap c without bringing the main body 1, the left-right moving arm 3 and the vertical moving arm 6 into close contact with each other. This is because the fixing metal fittings are galvanized after the assembly of all parts in order to enhance the durability of the rust preventive effect. It is necessary to secure it. or,
By providing this gap c, it is possible to reduce the rotation resistance of the left and right moving arms 3 and the up and down moving arms 6.

Next, FIGS. 10 to 12 show a fixing metal fitting A2 of another embodiment. The main difference between the fixing bracket A2 and the fixing bracket A1 of the above-described embodiment is that the vertical movement arm 6 is used.
It is in the shape of A. A cutout 9 is provided on the lower side of the vertical movement arm 6A, and a stop pin 8 projecting from the main body 1 is caught by the cutout 9 to prevent excessive downward and upward rotation. . Further, the shapes of the portions corresponding to the engaging portion 6c and the engaged portion 3c are also slightly different. That is, the upper and lower end portions of the left and right moving arms 3 and the vertical moving arm 6A are bent forward at right angles to form the engaged portion 3c.
And the engaging portion 6c is formed.

The operation of this embodiment is almost the same as that of the above embodiment. However, the vertical movement arm 6A needs to be forcedly rotated upward and downward twice when the fixing metal fitting A2 is removed and when it is returned to the erection standby state.

In each of the above structures, the object of the present invention can be achieved even if the design of the detailed structure is changed appropriately. For example, the shape of the outer periphery of the main body 1 and the shapes of the left and right moving arms 3 and the up and down moving arms 6 are not limited to the illustrated shapes as long as they have the respective functions described in the claims. .

[0019]

As is apparent from the above description, the scaffolding plate to which the fixing metal fitting according to the present invention is attached has the following excellent effects as compared with the conventional scaffolding plate described in the section of the prior art. Play. (A) When removing the scaffolding plate, the gripping state of the bracket can be released and the gripping released state can be reliably held by simply rotating the vertical movement arm upward. (B) Therefore, the engaging and disengaging operation of the fixing metal fitting to the bracket can be performed very easily and surely. (C) The fixing metal fitting on one side of the scaffolding plate, which was a big difficulty of the conventional technology, was released, and the fixing metal fitting on the other side was released, and the scaffolding plate was vibrated to release it. In addition, the inconvenience that the fixing metal fitting on one side returns to the original gripped state is surely eliminated. (D) Therefore, the scaffolding board can be removed by one person
You will be able to perform extremely efficiently and safely without requiring heavy labor. (E) Further, by providing the gaps between the left and right moving arms and the up and down moving arms and the main body, it is possible to surely perform zinc hot dip galvanizing in a state where the fixing metal fittings are assembled, and both arms rotate. It will be easier.

[Brief description of drawings]

FIG. 1 is a perspective view of a scaffolding board.

FIG. 2 is a sketch showing a state in which a scaffolding board is installed on a scaffolding turret.

FIG. 3 is a perspective view showing an embodiment of a fixing member of the present invention in a erection standby state.

FIG. 4 is a front view showing a state in which the fixing bracket is gripping the bracket.

FIG. 5 is a front view showing a state in which gripping has been completed.

FIG. 6 is a perspective view of the fixing bracket in the same state as above.

FIG. 7 is a front view showing the state at the time of releasing the grip.

FIG. 8 is a front view showing a state in which bulges are provided on the back surfaces of the left and right moving arms and the up and down moving arms.

FIG. 9 is a vertical cross-sectional view showing a formation state of the bulging portion of the above.

FIG. 10 is a front view of the fixing fitting according to another embodiment of the present invention in a holding standby state.

FIG. 11 is a front view of the same as above, in a state where gripping is completed.

FIG. 12 is a front view showing a state at the time of releasing the grip.

FIG. 13 is a front view showing a state in which a conventional example is being gripped.

FIG. 14 is a front view of the same as above, in a state where gripping is completed.

FIG. 15 is a front view of the same as above, in a removal standby state.

[Explanation of symbols]

 60 Scaffolding plate A1, A2 Fixing bracket 1 Main body 1a Arc-shaped gripping part 2,5 Support pin 3 Left and right moving arm 3a Arc-shaped receiving part 3b Notch part 3c Engagement part 4,7,8 Stop pin 6 Vertical movement arm 6a Knob 6b, 6d Locking claw 6c Engagement part 9 Notch part a Projection part b Swelling part c Gap 50 Scaffolding turret 51 Scaffolding unit 52 Bracing 53 Bracket 60 Scaffolding plate 61 Fixing metal fitting 62 Main body 62a Circular gripping part 63, 64 pin 65 Sliding member 66, 67 Guide groove 66a, 67a Recess

Claims (4)

[Claims] 1. A structure which is installed between a pair of pipe brackets provided on a scaffolding turret, and fixing fittings for detachably gripping the brackets are fixed to both ends of the bracket.
The fixing metal fitting includes a main body 1 having a downward arcuate grip portion 1a into which at least an upper half of the bracket is inserted, and left and right around a support pin 2 provided at a side portion of the arcuate grip portion 1a. A vertically movable arm 3 which is swingable in the vertical direction and is swingable up and down around a left and right moving arm 3 having an arcuate receiving portion 3a for supporting the bracket, and a support pin 5 provided above the arcuate gripping portion 1a. The left and right moving arms 3 are urged to rotate outwardly separating the arcuate receiving portion 3a from the bracket, and the vertical movement arms 6 are urged to rotate downward at their tip ends. When the scaffolding board is standing by, the left-right moving arm 3 is rotated outward and kept at the grip release position with the vertical movement arm 6 placed on the upper end of the scaffolding board. Press the arcuate grip 1a onto the bracket Upon receipt of this movement, the left / right moving arm 3 rotates inward, and its arcuate receiving portion 3a is brought into contact with the lower half of the bracket so that the fixing bracket holds the bracket and the left / right moving arm 3 The vertical movement arm 6 released from the restraint by 3 further pivots downward, and the engaged portions 3c and the engaging portions 6c provided on both arms 3 and 6 engage with each other to fix the gripped state. The scaffolding plate is configured such that when the scaffolding plate is removed, the vertically movable arm 6 is forcibly rotated upward so that the gripped state is released. 2. A scaffolding plate, which is provided on a scaffolding turret, is fixed to both side ends of a scaffolding plate that is installed between a pair of brackets made of pipe, and is for gripping the bracket in a detachable manner. The main body 1 having the downward arcuate grip portion 1a into which the upper half portion is inserted and the support pin 2 provided at a side portion of the arcuate grip portion 1a can be swung left and right, and a bracket can be attached. A left-right moving arm 3 having an arcuate receiving portion 3a for supporting and a vertically moving arm 6 vertically swingable around a support pin 5 provided above the arcuate gripping portion 1a are provided. The movable arm 3 is urged to rotate outwardly, which separates the arcuate receiving portion 3a from the bracket, and the vertical movement arm 6 is urged to rotate downward at the tip end side thereof, thus waiting for the scaffolding board to be installed. Sometimes the left-right arm 3 moves up and down on its upper end. While the arm 6 is placed on the scaffolding plate, the arm 6 is rotated outward and kept in the grip release position. When the scaffold plate is installed, the arcuate grip portion 1a is pressed onto the bracket, and the left and right moving arms 3 that receive this movement are received. Rotates inward, its arcuate receiving portion 3a is brought into contact with the lower half of the bracket, and the fixing bracket grips the bracket, and the vertical movement arm 6 is released from the restraint by the horizontal movement arm 3. Is further rotated downward, and the engaged portions 3c and the engaging portions 6c provided on both arms 3 and 6 are engaged with each other to fix the gripped state, and when the scaffold plate is removed, the vertical movement arm A fixture for a scaffolding plate, characterized in that the gripping state is released when 6 is forcibly rotated upward. 3. The horizontal movement arm 3 and the vertical movement arm 6
3. The scaffolding plate according to claim 2, wherein each of the support pins 2 and 5 is rotationally biased outward and downward by setting the mutual positional relationship between the respective support pins 2 and 5 and the respective barycentric positions. Fixing metal fittings. 4. The horizontal movement arm 3 and the vertical movement arm 6
7. A plurality of bulging portions b are provided at a plurality of positions on the back surface side of the slab to reduce the obstacle to the work of hot-dip galvanizing the assembled fixing bracket and to facilitate the rotation. Two
Alternatively, the scaffolding plate fixing metal fitting described in 3.