JPH08284403A - Rope hanging clamp - Google Patents

Abstract

PURPOSE: To ensure safety for using a clamp, without giving great shearing force to the mounting portion of a ring member by oscillating the ring member tensed by a rope to be in the same inclined condition as that of the rope when the rope is hung on the ring member from the inclined direction. CONSTITUTION: A U-shaped clamp mainbody 15 has both arms 12, 13 opposed each other upward and downward and a connection 14 connecting both of these. A clamping screw 16 is threaded in and passed through the upper arm 12 of the clamp mainbody 15 in the direction that it is opposed to the lower arm 13. A rope hanging ring member 17 is oscillatably mounted on the lower arm 13.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rope-hanging clamp used for suspending a rope such as a chain for suspending a scaffold from a supporting material such as a girder in the construction of highways and bridges. .

[0002]

2. Description of the Related Art FIG. 6 shows a conventional clamp 1 used for suspending a chain for suspending a scaffold from a support material such as a girder in construction of a highway or a bridge. Is formed by pressing a metal plate, and has both side wall portions 2 and 3 facing each other vertically and both side wall portions 2 and 3.
U-shaped clamp body 5 consisting of a connecting wall 4 for connecting 3
And a clamping screw 6 threadedly penetrated through the upper side wall 2 of the clamp body 5, and a chain-shaped ring member 7 vertically fixed to the lower surface of the lower side wall 3 by bolts or the like. In use, however, a plurality of clamps 1 are attached to two adjacent supporting members 8 such as H-shaped steels at required intervals, and the ring-shaped members 7 of the respective clamps 1 are used for suspending a scaffold such as a chain. Hang 9 to suspend the hanging scaffold.

[0003]

In the use of the clamp 1, the scaffold-hanging rope 9 is normally attached to the ring-shaped member 7 in a state where it extends vertically from the suspending scaffold as shown by the solid line in FIG. In this case, a vertically downward tensile load indicated by a solid arrow acts on the ring-shaped member 7 along the vertical direction of the ring-shaped member 7. However, depending on the arrangement of the support members 8 at the construction site, for example, as shown in FIG. 5, the distance between the two support members 8 to which the clamp 1 is attached is considerably longer than the length of the suspension scaffold. Therefore, it may be necessary to hang each cord 9 from the suspension scaffold on the ring-shaped member 7 in a state of being pulled out obliquely upward. In such a case, a tension load in an oblique direction indicated by an imaginary line arrow is applied to the ring-shaped member 7 by the cord 9 hung in an obliquely extended state as shown in an imaginary line in FIG. In the clamp 1, since the ring-shaped member 7 is fixedly attached to the lower end of the clamp body 7, a large shear stress acts on the attachment portion of the ring-shaped member 7 due to the tensile load in the oblique direction,
There was a risk that the mounting part would be damaged.

In view of the above-mentioned problems, the present invention can swing the ring-shaped member along the hanging direction when the rope of the chain or the like is stretched obliquely with respect to the ring-shaped member. The main object of the present invention is to provide a rope hanging clamp. Other objects of the invention will become apparent in the detailed description set forth below.

[0005]

A cable-hanging clamp 11 according to claim 1 of the present invention comprises a pair of upper and lower opposing arm portions 1.
2 and 13 and a connecting portion 14 that connects them, and has a U-shaped clamp main body 15, and a screw 16 for clamping is screwed through the upper arm 12 of the clamp main body 15 in the direction opposite to the lower arm 13, A rope-hanging ring member 17 is swingably attached to the lower arm portion 13.

According to a second aspect of the present invention, in the cord-hanging clamp 11 according to the first aspect, the clamp body 15 has a pair of wide U-shaped side plate portions 18 and 18 on both sides, which widen in a vertical plate shape, and both side plate portions 18. , 18 are formed by U-shaped openings 18a, and a U-shaped connecting frame portion 19 integrally connected along the inner peripheral surface of the U-shaped opening portions 18a, 18a, and the through holes 26, 26 provided at the lower end portions of the U-shaped side plate portions 18 are formed. The supporting shaft portion 17a of the cord-shaped ring-shaped member 17 is pivotally supported.

According to a third aspect of the present invention, in the cord-hanging clamp 11 according to the second aspect, the clamp body 15 has a pair of wide U-shaped side plate portions 18 and 18 on both sides, which widen in a vertical plate shape, and both side plate portions 18. , 18 are integrally connected to each other along the inner peripheral surfaces of the U-shaped openings 18a, 18a, and the side end portions of the side plate portions 18, 18 on the side of the U-shaped openings 18a, 18a are integrally formed. It is formed by the connecting end plate portions 20 and 21 connected to.

According to a fourth aspect of the present invention, in the rope hanging clamp according to the second aspect, reinforcing ribs 22 are formed on each U-shaped side plate portion 18 of the clamp body 15.

[0009]

[Operation] A rope suspending clamp 1 according to claim 1 of the present invention
1 is a state in which a clamp main body 15 is fitted to a sandwiched portion of a support member 8 and a clamp screw 16 is fastened and fixed, and a cord 9 such as a chain is hooked on a cord-shaped ring member 17 for hooking. use. The clamp 11 can be used not only for suspending the scaffold 27 but also for suspending various other things.

In the use of the clamp 11, for example, when each rope 9 that suspends the suspension scaffold 27 is hung between the ring-shaped member 17 and the suspension scaffold 27 substantially perpendicularly to the horizontal plane, The ring-shaped member 17 is pulled vertically downward by the cord 9 to be in a vertical posture. Then, when the cord 9 is slung in an oblique direction between the ring-shaped member 17 and the suspension scaffold 27, the ring-shaped member 17 is pulled by the slanted cord 9 and swings, The same inclination state as that of the rope 9 is provided, and therefore, a large shearing force does not act on the attachment portion of the ring-shaped member 17, and the safety in use is secured as in the case of the vertical posture.

As in the clamp 11 according to the second aspect, the clamp body 15 includes a pair of wide U-shaped side plate portions 18 and 18 on both sides which spread in the form of a vertical plate, and both side plate portions 18 and 18 having a U-shaped opening 18a. , 18a and the U-shaped connecting frame portion 19 that is integrally connected along the inner peripheral surface, a pair of wide U-shaped side plate portions 18 and 18 on both sides, which spread in a vertical plate shape,
A sufficient space in the vertical and horizontal directions for swingably attaching the cord-hanging ring-shaped member 17 to the lower arm portion 13 of the clamp body 15 can be secured, and the ring-shaped member 17 is easily and easily attached, which is complicated. It is possible to provide the lower arm portion 13 with sufficient strength without requiring any attachment structure. The U-shaped side frame portion 1 is formed by the U-shaped connecting frame portion 19.
8 and 18 can be firmly connected to each other, and the clamp screw 16 can be attached by utilizing the upper wall portion of the U-shaped connection frame portion 19.

Further, as in the clamp 11 according to the third aspect, the clamp body 15 has the pair of U-shaped side plate portions 1 on both sides.
8, 18 and the U-shaped connecting frame portion 19 as well as the side plate portions 1
When the connecting end plate portions 20 and 21 that integrally connect the side ends of the U-shaped opening portions 18a and 18a of 8 and 18 are integrally formed, the connecting strength between the U-shaped side plate portions 18 and 18 is further increased, The clamp body 15 can be a more robust structure.

Further, as in the clamp 11 according to the fourth aspect, the reinforcing ribs 22 are formed on each U-shaped side plate portion 18 of the clamp body 15 to increase the strength of each U-shaped side plate portion 18 itself. Things will come.

[0014]

EXAMPLES Examples will be described with reference to the drawings.
As shown in FIG. 1, a rope suspension clamp 1 according to the present invention
1 has a U-shaped clamp main body 15 composed of both arm portions 12 and 13 facing each other in the vertical direction and a connecting portion 14 connecting them, and a clamp screw 16 is attached to the upper arm portion 12 of the clamp main body 15. A ring-shaped member 17 that is threadedly penetrated in a direction facing the lower arm portion 13 and that hangs the rope 9 such as a chain is swingably attached to the lower arm portion 13.

The structure of the clamp 11 will be described in more detail with reference to FIGS. 2 and 3 as well. The clamp main body 15 includes a pair of wide U-shaped side plate portions 18 and 18 on both sides which spread in a vertical plate shape. U-shaped connecting frame portions 19 that integrally connect the plate portions 18 and 18 along the inner peripheral surfaces of the U-shaped opening portions 18a and 18a, and the U-shaped opening portions 18a and 18a of the side plate portions 18 and 18 It is formed by connecting end plate portions 20 and 21 that integrally connect the side end portions.

To form the clamp body 15, for example, one steel plate material is pressed to form a pair of wide plate portions (plate portions forming the side plate portions 18, 18) on both sides which spread in a vertical plate shape. End plate part (plate part forming the connecting end plate parts 20 and 21)
And a pair of U-shaped side plate portions 18 and 18 on both sides by cutting and cutting the elongated U-shaped member from the side of the end plate portion into a U-shape in a front view. And the connection end plate portions 20 and 21 are integrally formed, and the U-shaped connection formed by pressing another steel plate material into the U-shaped openings 18a and 18a of the integrally formed material M (see FIG. 3). The U-shaped clamp body 15 as shown in FIG. 1 can be formed by fitting and welding the frame portion 19 and then performing a cutting process on the corners and the like of the integrally formed material M. At this time, each U-shaped side plate portion 18
A reinforcing rib 22 that bulges outward is formed on the outer surface of the sheet, and the cross-sectional shape thereof is shown in FIG.

In the clamp body 15, the U-shaped side plate portions 18 and 18 are integrally connected by the connecting end plate portions 20 and 21, so that the connecting strength between the U-shaped side plate portions 18 and 18 can be further enhanced. This allows the clamp body 15 to be more robust. In this embodiment, both U-shaped side plate parts 18, 18 and the connecting end plate part 20,
21 and 21 are integrally formed by pressing, but both U-shaped side plate portions 18 and 18 are formed separately, and rectangular piece-shaped connecting end plate portions 20 and 21 are welded and connected thereto. You may do it. The connecting end plate portions 20 and 21 are omitted, and the U-shaped opening portions 18a and 1 of the both side plate portions 18 and 18 are omitted.
You may make it provide the same connection end plate part in the side end part on the opposite side to the 8a side. In addition, the U-shaped clamp body 15
Eliminates the connecting end plate portions 20 and 21 as described above, and disposes both U-shaped side plate portions 18 and 18 and both side plate portions 18 and 18 along the inner peripheral surfaces of the U-shaped opening portions 18a and 18a. It may be formed by a U-shaped connecting frame portion 19 that is integrally connected. In this case, if both U-shaped side plate portions 18, 18 and the U-shaped connecting frame portion 19 are formed by pressing one steel plate material. Good.

In the clamp body 15 formed as described above, a screw insertion hole 23 is bored in the upper wall portion 19a of the U-shaped connecting frame portion 19 (see FIG. 3), and on the upper wall portion 19a. As shown in FIG. 2B, the nut member 24 is arranged concentrically with the screw insertion hole 23 and fixed by welding.
However, the clamp screw 1 is attached to the upper arm 12 of the clamp body 15 via the lever-shaped member 24 and the screw insertion hole 23.
6 is screwed through. A disc spring 25 is attached to the tip of the clamp screw 16.

As shown in FIG. 1, the clamp screw 16 is screwed through the upper arm portion 12 in a posture in which the tip end side is slightly inclined so as to approach the inside of the clamp body 15. When clamping (clamping) the support material 8 such as
This is because the tip portion of the screw 16 acts so as to pull the held portion of the support member 8 inward of the clamp body 15 to effectively perform the clamp action. Further, as shown in FIG. 3, the holes 32 drilled in the lower wall portion 19b of the U-shaped connecting frame portion 19 are opened when the support material 8 such as a girder material is clamped (clamped). The peripheral edge improves the biting of the support material 8, and the support material 8 can be reliably sandwiched.

Through holes 26, 26 are formed in the clamp body 15 at the lower end portions of the U-shaped side plate portions 18, 18 facing each other, and the cord hanging rings are provided in the through holes 26, 26. The horizontal support shaft portions 17a, 17a of the ring-shaped member 17 are inserted and axially supported, so that the ring-shaped member 17 is centered on the horizontal support shaft portions 17a, 17a pivotally supported by both through holes 26, 26, and is shown in FIG. It can be swung as shown by a line. The ring-shaped member 17 can swing from a vertical posture as shown by a solid line in FIG. 1 to a horizontal posture. The opposite ends of the support shaft portions 17a, 17a shown in FIG.
After being inserted through Nos. 6 and 26, they are welded and joined to each other as shown in FIG. In addition, the horizontal support shaft portion 17
As shown in FIG. 2D, a and 17a may be formed by bending the respective tip portions inward.

When using the rope-hanging clamp 11 having the above-mentioned structure, as shown in FIG. 5, for example, four clamps 11 are provided adjacent to each other by two supporting members 8 and 8 such as H-section steel. The clamp main body 15 is fitted to the end of the support member 8 and the clamp screw 16 is fastened and fixed.
A rope 9 such as a chain is hooked between the suspension 7 and each locking portion 28 of the suspension scaffold 27.

In this case, the opposing distance between the two support members 8 is about the same as the length of the suspension scaffold 27, and each rope 9 that suspends the suspension scaffold 27 has a ring shape of each clamp 11. When the member 17 and each locking portion 28 of the suspension scaffold 27 are hung substantially perpendicular to the horizontal plane, each clamp 1
The ring-shaped member 17 of No. 1 is pulled vertically downward by the cords 9 as shown by the solid line in FIG. Then, for example, as shown in FIG. 5, the facing distance between the support members 8 is considerably longer than the length of the suspension scaffold 27, and each cord 9 has the ring-shaped member 17 of each clamp 11 and the suspension scaffold 27. When it is stretched obliquely with each of the locking portions 28, the ring-shaped member 17 of each clamp 11 is pulled by the cord 9 that is slanted, as shown by the phantom line in FIG. As a result, the support shaft portion 17a swings about the support shaft portion 17a and becomes in the same inclined state as the rope 9, and therefore a large shearing force does not act on the support shaft portion 17a (mounting portion) of the ring-shaped member 17, As in the vertical position, safety in use is ensured.

In the above-mentioned cord-hanging clamp 11, since the main body of the clamp body 15 is formed by a pair of wide U-shaped side plate portions 18 on both sides which spread in a vertical plate shape, the cord is hooked on the lower arm portion 13. A sufficient space can be secured for the swingable ring-shaped member 17 to be mounted swingably.
The ring-shaped member 17 can be easily attached to the lower arm 3 of the vehicle. By the way, in the case of the cable hanging clamp 1 having the conventional structure as shown in FIG. 6, the entire clamp body 5 is formed in a U-shaped frame, and the lower arm portion 3 is flat, so that the ring is It is very difficult to attach the strip-shaped member 7 swingably.

In the embodiment shown in FIGS. 1 and 5, the cord 9 is
Although it is looped (endlessly) hung between the ring-shaped member 17 of each clamp 11 and each locking portion 28 of the suspension scaffold 27, as shown in FIG. Used in a string,
One end is fixed to the suspension scaffold 27 side and the other end is hook 2
Alternatively, the hook 29 may be hooked on the ring-shaped member 17 of the clamp 11 by attaching the hook 9. The hook 29 shown in FIG. 4 includes a lock member 31 that constantly closes the entrance of the locking opening 30 by a spring biasing force.
When the hook 29 is hooked on the cord-hanging ring member 17, the lock member 31 is pushed open against the spring biasing force.

[0025]

According to the rope hanging clamp of the first aspect, when the cord is hung from the ring-shaped member in an oblique direction, the ring-shaped member is pulled by the cord and swings to Since the inclined state is the same as that of the strip, a large shearing force does not act on the mounting portion of the ring-shaped member, and the safety in using the clamp can be secured as in the case of the vertical posture.

According to the rope hanging clamp of the second aspect, the pair of U-shaped side plate portions on both sides, which are wide and spread in the form of a vertical plate, swing the cord-shaped ring member on the lower arm of the clamp body. It is possible to secure a sufficient space in the vertical and horizontal directions for mounting so that the ring-shaped member can be mounted easily and easily, a complicated mounting structure is not required, and the lower arm can have sufficient strength. it can. Further, the U-shaped connecting frame portion can firmly and integrally connect both U-shaped side plate portions to each other, and the clamping screw can be attached by utilizing the upper wall portion of the U-shaped connecting frame portion.

According to the rope hanging clamp of the third aspect, the connecting strength between the U-shaped side plate portions can be further increased, and the clamp body can be a more sturdy structure.

According to the rope hanging clamp of the fourth aspect, the strength of each U-shaped side plate portion itself can be increased.

[Brief description of drawings]

FIG. 1 is a front view showing an embodiment of a rope hanging clamp of the present invention.

FIG. 2A is a left side view of the clamp shown in FIG.
(B) is a right side view of the clamp shown in FIG. 1, (C) is
(B) is a cross-sectional view taken along the line X-X, and (D) is an explanatory view showing another example of attachment of the cord-shaped ring member for hanging rope.

FIG. 3 is an exploded perspective view of the clamp shown in FIG.

FIG. 4 is an explanatory view showing another example of use of a chain that is hooked on a rope-hanging ring-shaped member.

FIG. 5 is a perspective view showing an example of use of the rope hanging clamp of the present invention.

FIG. 6 is a front view showing a conventional rope hanging clamp.

[Explanation of symbols]

 8 Supporting Material 11 Rope Hanging Clamp 12 Upper Arm Part 13 Lower Arm Part 14 Connecting Part 15 Clamp Main Body 16 Clamping Screw 17 Rope Hanging Ring Member 17a Spindle Part 18 U-Shaped Side Plate Part 19 U-Shaped Connecting Frame Part 20 Connection end plate part 21 Connection end plate part 22 Reinforcing rib 24 Nut-shaped member 26 Through hole 27 Suspension scaffold

Claims (4)

[Claims] 1. A U-shaped clamp main body composed of upper and lower opposite arm portions and a connecting portion connecting these arms, and a clamp screw is screwed onto the upper arm portion of the clamp main body in a direction facing the lower arm portion. A rope-hanging clamp which penetrates and has a ring-like member for hanging a rope attached to the lower arm in a swingable manner. 2. The clamp body includes a pair of wide U-shaped side plate portions on both sides that spread in a vertical plate shape, and a U-shaped connecting frame portion that integrally connects both side plate portions along an inner peripheral surface of the U-shaped opening. 2. The rope suspension clamp according to claim 1, wherein the rope suspension clamp is formed and the support shaft portion of the rope-hanging ring member is pivotally supported in through holes provided at the lower end portions of the both side plate portions. 3. A pair of wide U-shaped side plate portions on both sides of the clamp body that spread in a vertical plate shape, and a U-shaped connecting frame portion that integrally connects both side plate portions along the inner peripheral surface of the U-shaped opening. 3. The rope suspending clamp according to claim 2, which is formed by a connecting end plate portion that integrally connects side end portions of the side plate portions on the U-shaped opening side. 4. The chain hanging clamp according to claim 2, wherein a reinforcing rib is formed on each U-shaped side plate portion of the clamp body.