JP3051699B2 - Scaffold braces and scaffold braid connectors - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a connecting tool for setting a scaffold bracing for reinforcing a scaffold composed of a frame on the same scaffold, and a scaffold bracing equipped with such a connecting tool. It is.

[0002]

2. Description of the Related Art Conventionally, at a construction site or the like, a scaffold for work is assembled by assembling pipe materials in a frame shape. Such scaffolds are provided with braces to withstand lateral or diagonal loads. One type of such bracing is patent 260
No. 9558.

[0003] As shown in FIG. 8, in this conventional brace 51, a connecting tool 52 fixed to both ends of the brace 51 is connected to a connection frame 54 formed on the column 53 side, so that the brace 5 is connected.
1 is attached. The conventional connecting means will be described in more detail. As shown in FIG. 9, the connecting tool 52 has a connecting pin 55, and the connecting pin 55 is connected to the connecting frame 5.
Insert into 4. At the time of this insertion, the wedge piece 56 is once held at a position shown by a two-dot chain line in the figure. The wedge piece 56 is held in this manner by connecting the connecting pin 55 to the connecting frame 54.
This is to prevent the wedge piece 56 from interfering with the wedge piece 56 when the wedge piece 56 is inserted. Then, in a state where the connecting tool 52 is temporarily fixed to the connecting frame 54 with the connecting pin 55, the wedge piece 56 which has been held is gripped and pushed vertically in the drawing, and further driven with a hammer or the like.

The wedge piece 56 has an inclined side surface 56a having an upper plate 57.
In order to contact the inner peripheral edges of the holes 57a, 58a of the lower plate 58, the lower plate 58 is moved in the direction of the connecting frame 54 (the direction of the connecting pin 55) by the reaction force from these inner peripheral edges as it is driven.
The wedge piece 56 is positioned at a position indicated by a solid line in FIG.
To the connection frame 5 in cooperation with the connection pin 55.
Insert 4. By such an operation, the connecting tool 52 is fixed to the connecting frame 54.

[0005]

Here, in the above-mentioned conventional connector 52, at least two contact portions of an upper plate 57 and a lower plate 58 are required. This is for the following reasons. That is, for example, only one point of the upper plate 57
When the wedge pieces 56 are brought into contact with each other, the wedge pieces 56 are caused to rotate (wobble) about the position of the upper plate 57.
In particular, since the position of the upper plate 57 serving as the center of rotation is above the position where the wedge piece 56 and the connection frame 54 are in contact with each other, the rotation is considerably amplified and transmitted to the wedge piece 56. Therefore, even if the wedge piece 56 is driven, the wedge effect is attenuated by this rotating operation, and the wedge piece 56 is loosened. Then, the wedge piece 56 having the inclined side surface 56a is pushed back (upward) by the reaction force from the connection frame 54. For this purpose, in the conventional connecting tool 52, the upper plate 57 and the lower plate 58 are provided at intervals so as to prevent the wedge piece 56 from rotating. However, forming a plurality of members that come into contact with the wedge pieces 56 in this way increases the number of steps for manufacturing the coupling tool 52, and leads to an increase in manufacturing cost. In order to evenly distribute the force, it is desirable that the wedge piece 56 comes into surface contact with the connection frame 54. For this purpose, as shown in FIG. 10, the wedge piece 56 and the inclination angle θ1 of the inclined side surface 56a are matched. The inclination angle θ2 of the line connecting the inner peripheral edges of the holes 57a and 58a of the upper plate 57 and the lower plate 58 that are in contact with each other must be the same. Then, the wedge piece 56, the upper plate 57 and the lower plate 58
It is necessary to finish the shapes of the holes 57a and 58a with a very high precision, which also leads to an increase in manufacturing cost.
Further, although there are two contact portions of the upper plate 57 and the lower plate 58, the force point for pressing the wedge piece 56 and the wedge piece 5
As long as the action point at which the 6 presses the connecting frame 54 is shifted, a bending moment is generated on the tip end side of the wedge piece 56 (below the lower plate 58). In the unstable state in which a moment is thus generated, the wedge piece 56 is slightly bent by a slight vibration. Then, similarly to the above, the wedge piece 56 is loosened, and the connecting tool 52 may not be fixed sufficiently.

The present invention has been made by paying attention to such problems existing in the prior art. The purpose is to connect a wedge member to the scaffolding brace connecting device and fix it to the connecting frame on the scaffold side, with a simple structure and a connecting device that can be firmly fixed to the connecting frame or An object of the present invention is to provide a scaffold braid equipped with such a connecting device.

[0007]

Means for Solving the Problems In order to achieve the above object, according to the first aspect of the present invention, there is provided a scaffold bracing for reinforcing a scaffold constituted by a frame, wherein The scaffolds for the same scaffold are connected to the scaffold by engaging the joints attached to both ends of the brace with the joint frame on the same scaffold side, and the wedge member is driven in to fix the joint to the joint frame. In the scaffold bracing as described above, the connecting tool includes at least a connecting tool main body, an insertion piece fixed to the main body and inserted into the connecting frame, and a wedge member that comes into contact with the driven wedge member. And a contact portion formed on the connecting device main body for moving the connecting device in the connecting frame direction, and the wedge member is brought into close contact with the connecting frame in a state where the connecting device is fixed to the scaffold side.
And the wedge member and the connection frame overlap each other.
While it is arranged in a multiple state,
The gist is to form a holding portion for holding the wedge member . In such a configuration, first, the insertion piece is inserted into the connection frame, and then the wedge member is driven in with a hammer or the like. The driven wedge member comes into contact with the contact portion and is moved in the direction of the connection frame, and cooperates with the insertion piece to sandwich the connection frame. At this time, since the contact portion, the wedge member, and the connection frame have an overlapping positional relationship, the wedge member transmits the reaction force from the contact portion to the connection frame evenly and does not generate a bending moment. Linking
When fixing the fixture to the connection frame, attach the wedge
And insert the insert into the connecting frame
To temporarily fasten the coupling.

According to the invention of claim 2, there is provided a scaffolding brace for reinforcing a scaffold composed of a frame, wherein a connecting tool attached to both ends of the scaffolding brace is connected to the scaffolding side. By connecting the scaffold braces to the scaffold by engaging the connecting frame,
In a scaffold bracing connection tool that was fixed to the connection frame by driving a wedge member, at least a connection tool body,
An insertion piece fixed to the same body and inserted into the connection frame;
The bitterness in the implanted and a said wedge member in contact with the wedge member the connecting frame direction abutting portion formed in the connector body to move in the state fixed to the scaffold side
And the member in close contact with the connection frame, and
So that the wedge member and the connection frame are placed in an overlapping state
On the other hand, the wedge material is held in the contact portion.
The gist is that a part is formed . With this configuration, an operation similar to that of the first aspect is obtained.

According to a third aspect of the present invention, in addition to the configuration of the second aspect of the present invention, an insertion hole is formed in the connecting member main body, and the wedge member is inserted into a pushing hole formed in the main body so as not to fall off. The gist is that they are fitted. With this configuration, in addition to the function of the second aspect, the wedge member does not fall out of the push-through hole, and also functions as a wedge for fixing the coupling tool because it is loosely fitted .

[0010]

According to the first and second aspects of the present invention, the abutting portion, the wedge member, and the connection frame have an overlapping positional relationship, and the wedge member transmits the reaction force from the abutment portion to the connection frame evenly. In addition, since no bending moment is generated, the connecting tool can be more firmly fixed to the connecting frame than before. Ma
Also, when inserting the insertion piece into the connecting frame and temporarily fixing the connecting
The wedge member can be held by the holding section
Therefore, workability is improved. According to the third aspect of the invention, in addition to the effect of the second aspect, the wedge member does not fall out of the pushing hole and is loosely fitted, so that it also functions as a wedge for fixing the connecting member .

[0011]

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment embodying a scaffold bracing connector according to the present invention will be described below with reference to FIGS. The connecting member main body 11 of the connecting member 10 is constituted by two plate members 12 of the same shape bent in a hook shape. The pair of plate bodies 12 are arranged at a predetermined interval. Both plates 1
A connection pin 13 is fixed to the base of the second member. The connecting pin 13 is sandwiched between the two plates 12. That is, the thickness of the connecting pin 13 corresponds exactly to the interval between the two plate bodies 12. The two plates 12 are linear portions 1 that are substantially perpendicular to the connecting pins 13.
2a, a first bent portion 12 formed by bending from the straight portion 12a so as to be substantially parallel to the direction in which the connecting pin 13 extends.
b, and a second bent portion 12c formed by further bending from the first bent portion 12b toward the connecting pin 13 direction. A contact plate 14 is fixed to the tip of the second bent portion 12c. In addition, a table 15 is formed above the second bent portion 12b and above the contact plate 14.

A wedge piece 17 is loosely fitted in an insertion hole 16 formed between the straight portions 12a of the two plate members 12. The wedge piece 17 is formed in a plate shape, and a head 18 having an overhang is formed on the base side. The head 18 serves as a hit point when the wedge piece 17 is driven by a hammer or the like, and the head 18 prevents the wedge piece 17 from dropping downward from the connector main body 11. A projection 19 protrudes from the wedge piece 17 near the tip. Therefore, the wedge piece 17
Cannot be pulled out from the insertion hole 16 of the connecting member main body 11 due to the projection 19. In addition, both plate bodies 12
The connecting pin 13 and the two plates 12 and the contact plate 14 are joined by gas welding, but the weld bead is omitted in the figure.

As shown in FIG. 2, an inclined surface 17a is formed on a side surface of the wedge piece 17 facing the contact plate 14 so that the wedge piece 17 is tapered. As a result, when the wedge piece 17 is pushed in by hand or driven in with a hammer or the like, the inclined surface 17a comes into contact with the contact plate 14, and the wedge piece 17 is moved in the direction of the connection pin 13 by the reaction force of the contact plate 14. . The weight of the wedge piece 17 is heavier toward the head 18 (that is, as it goes upward). The connecting device 10 thus configured is fixed to both ends of the scaffold bracing 21. The scaffold bracing 21 is a rod-like body in which both ends of the pipe material are crushed to form a plate-like portion 21a. As shown in FIG. 3, the connecting tool 10 </ b> A fixed to the upper side of the brace 21 in the drawing is such that the plate-like portion 21 a of the brace 21 is a connecting portion between the first bent portion 12 b and the second bent portion 12 c. At the first corner portion C1. On the other hand, the connector 10B fixed to the lower side of the brace 21 in the drawing is such that the plate-like portion 21a of the brace 21 is connected to the second corner portion C2 which is a connection portion between the straight portion 12a and the first bent portion 12b. Between the two plates 12. The connecting tool 10 is joined to the scaffold bracing 21 by gas welding, but the weld bead is omitted in the figure.

[0014] The scaffold braces 21 configured as described above are connected to a connection frame 23 formed on the scaffold 22. As shown in FIGS. 3 to 5, a connecting frame 23 having a channel-like cross section is formed on the outer periphery of a scaffold 22 made of a pipe material.
The connection frame 23 includes a pair of side plates 2 protruding from the outer peripheral surface of the scaffold 22.
3a and a front plate 23b suspended between both side plates 23a. The pair of connecting frames 23 are arranged at positions opposed to each other by 180 degrees, and the other pair of connecting frames 23 are arranged at positions shifted vertically by 90 degrees with respect to the pair of connecting frames 23 and displaced by 90 degrees. . That is, a connection point 24 having a connection frame 23 facing in four directions is formed. Such connection points 24 are arranged on the scaffold 22 at predetermined intervals.

Next, the operation when the scaffolding brace 21 provided with such a connecting tool 10 is attached to the scaffold will be described. First, as shown in FIG.
Place on top of 5. Then, as shown in FIG. 3, the connecting pins 13 of the connecting tools 10A and 10B at both ends of the scaffold bracing 21 are inserted into the connecting frames 23, respectively. In this state, the connector 10
A and 10B are not fixed to the connection frame 23 and are in a temporarily fixed state. Next, when the wedge piece 17 is lowered from above the table 15, the wedge piece 17 falls by its own weight and moves toward the connection frame 23 by contact with the contact portion 14. And the wedge piece 17 is arrange | positioned in the position of FIG.

Next, the wedge piece 17 is driven with a hammer or the like. Then, the reaction force from the contact plate 14 is applied to the wedge piece 17, and the pressing force based on the reaction force is evenly applied to the contact surface S between the wedge piece 17 and the side plate 23 b of the connection frame 23. In this case, the contact position of the contact plate 14 with the wedge piece 17 and the contact surface S are overlapping positions. Therefore, even if the wedge piece 17 is driven, no moment is generated in the wedge piece 17 due to the reaction force from the contact plate 14. Therefore, the wedge piece 17 is firmly attached to the side plate 23b (connection frame 2).
3) There is no looseness due to close contact. Next, to remove the scaffolding braid 21 from the scaffold, first, hit the lower end of the wedge piece 17 with a hammer or the like, loosen the wedge piece 17, and place the wedge piece 17 on the table 15 once. . Then, the connecting pin 13 is pulled out from the connecting frame 23 while holding the scaffolding brace 21.

With this configuration, the present embodiment has the following effects. When the wedge piece 17 is driven in, the contact plate 14 contacts the lower end of the wedge piece 17 (about 1/3 from the bottom of the entire length), and at that position, the contact plate 1
4. The wedge piece 17 and the side plate 23b of the connection frame 23 are arranged so as to overlap. Therefore, the reaction force of the contact plate 14 is the wedge piece 1
7 is evenly transmitted to the side plate 23 b as a pressing force, so that the connecting tool 10 is firmly fixed to the connecting frame 23.

Contact plate 14, wedge piece 17, connecting frame 23
Is arranged so as to overlap with the side plate 23b. Therefore, the wedge piece 17 does not rotate around the contact position with the contact plate 14. Therefore, it is not necessary to provide a plurality of abutting portions (the upper plate 57 and the lower plate 58) as in the related art.

The wedge piece 17 can be placed on the connecting pin 13 when the connecting pin 13 is inserted by the table 15, so that the wedge piece 17 does not interfere. Further, since the table 15 uses the second bent portion 12c as the contact portion and the contact plate 14, it is not necessary to form a separate member.

The connecting member main body 11 easily forms the insertion hole 16 for inserting the wedge piece 17 by interposing the pair of plate members 12 with the connecting pin 13 interposed therebetween. Further, since the connecting member main body 11 is constituted by the pair of plate bodies 12, the weight is extremely reduced.

The present invention can be embodied with the following modifications. The connector main body 11 may not be a pair of plate bodies 12. For example, even if it is a single plate, it is sufficient that the driven wedge member does not fall off and there is a contact portion for fixing the connecting tool. Of course, the form need not be a plate. The holding means for holding the wedge member does not need to be the table 15 as described above . Its <br/> also mounting ring is set to other than the holding means means may be hooked, for example, by a hook or the like. The contact plate 14 may not be provided. Further, even if there is, it need not be plate-shaped.
It is not necessary to stick to the wedge piece 17 of the above embodiment as the wedge member. Further, the shape of the projection 19 is also free. Further, the head 18 and the projection 19 may not be provided. In the above embodiment, the number of the contact plates 14 that contact the wedge pieces 17 is one. However, in the present invention, since the contact frame, the wedge member facing and the connection frame may essentially overlap, the technical scope includes a non-overlapping contact portion in addition to the overlapping contact portion. . Of course, the overlapping contact portions need not be singular. The shape of the connection frame 23 is not limited to the above embodiment. In addition, the material may be used irrespective of the material, and the members may be joined by means other than welding.

[0022]

[0023]

[Brief description of the drawings]

FIG. 1 is a perspective view of a connector according to an embodiment of the present invention.

FIG. 2 is a front view of the same.

FIG. 3 is a front view showing a state in which the coupler according to the embodiment is attached to the scaffold braces and temporarily fixed to the scaffold.

FIG. 4 is a plan cross-sectional view showing a state in which the coupler of the embodiment is attached to a scaffold bracing and fixed to the scaffold.

FIG. 5 is a partially enlarged front view showing a state in which the coupler of the embodiment is attached to the scaffold braces and fixed to the scaffold.

FIG. 6 is a front view of the coupler according to the embodiment of the present invention.

FIG. 7 is a front view of the same.

FIG. 8 is a schematic perspective view showing a state where braces are attached to a conventional scaffold.

FIG. 9 is a front view of a conventional coupler.

FIG. 10 is an enlarged front view illustrating a main part of a conventional coupling tool.

[Description of Signs] 10 ... Connector, 11 ... Connector body, 12 ... Plate, 14 ...
A contact plate as a contact portion, 12c a second bent portion as a contact portion,
16 ... insertion hole, 17 ... wedge piece, wedge piece, 13 ...
Inserting pin connecting pin, 21 ... scaffold braid, 22 ... scaffold,
23 ... connecting frame.

Claims (3)

(57) [Claims] 1. A scaffolding brace for reinforcing a scaffold composed of a frame body, wherein a connecting tool attached to both ends of the scaffolding brace is engaged with a connecting frame on the same scaffolding side. In the scaffold bracing, the scaffold braces are connected to the scaffold with a wedge member, and the connecting tool is fixed to the connecting frame, wherein the connecting tool is at least a connecting tool body and the same body. And an abutting portion formed on the connecting tool body for abutting on the driven wedge member and moving the wedge member in the direction of the connecting frame. And the wedge member in a state where the connecting tool is fixed to the scaffold side.
To the connecting frame, and the same wedge as the abutting part.
Make sure that the members and the connection frame are
On the other hand, the contact portion has a holding portion for holding the wedge member.
A scaffold bracing characterized by being formed . 2. A scaffolding brace for reinforcing a scaffold composed of a frame body, wherein a connecting tool attached to both ends of the scaffolding brace is engaged with a connecting frame on the same scaffolding side. A scaffolding brace connecting tool for connecting the scaffolding bracing to the scaffold and driving a wedge member to fix it to the connection frame, wherein at least the connecting tool main body and the connection are fixed to the main body. An insertion piece to be inserted into the frame, and a contact portion formed on the connecting tool main body that contacts the driven wedge member and moves the wedge member in the connection frame direction. When the wedge member is fixed to the connection frame,
And the wedge member and the connection frame overlap each other.
While it is arranged in a multiple state,
A connecting device for a scaffold bracing, wherein a holding portion for holding a wedge material is formed . 3. A wedge member is held at an abutting portion formed at said connecting member main body, wherein said wedge member is loosely fitted into said through hole so as not to fall off. The scaffold bracing according to claim 2, wherein a holding portion is formed.