JPH11141119A - Clamp - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a clamp capable of being smoothly and surely fixed to the front element pipe among a plurality of element pipes arranged in both front and rear directions in an erection state and, at the same time, smoothly and surely bearing and fixing also a horizontal member for bearing a scaffolding board. SOLUTION: The clamp is constituted of a holding metal fixture 1 fixed to an element pipe and a joint metal fixture 2 monolithically fixed to the front of the holding metal fixture 1 and bearing and fixing a horizontal member in an insertion state. The holding metal fixture 1 is constituted of a holding recess section 11a for holding one side of the element pipe, a movable metal fixture piece 12 opposed to the said holding recess section 11a and bound on the other side of the element pipe and a control lever 13 provided to the outside of the front element pipe and moving the movable metal fixture piece 12 back and forth to the holding recess section 11a.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a clamp for fixing a transverse member to a front surface of a frontmost element pipe of a plurality of element pipes arranged in the front-rear direction in an upright state. The present invention relates to a clamp that can be securely and smoothly fixed to the front surface of the foremost element tube in a row of element tubes.

[0002]

2. Description of the Related Art At present thermal power generation, a boiler furnace is provided with a large number of element tube rows in which a plurality of element tubes are juxtaposed in a longitudinal direction, and water is circulated through the element tubes. Heat this element tube with a boiler in
The water flowing in the element tube is turned into steam. Then, the turbine is rotated by the generated steam to generate electric power.

On the other hand, the element tube in the boiler furnace is inspected about once or twice a year. The element tube is located at the upper part in the boiler furnace, and the element tube itself is also long. Therefore, when inspecting these element tubes, as shown in FIG. 9, the clamp 5 is conventionally fixed to the horizontal member B supporting the front and rear ends of the scaffold plate, while the horizontal member B is supported. The clamp 5 is wound around the element tube A row using a steel wire 6 and fixed, so that the clamp 5 is mounted on the foremost element pipe of the element pipe row and mounted on the foremost element pipe of the left and right element pipe rows. A scaffold was made by laying a scaffold plate between the horizontal members B attached between the clamps 5 and 5, and the element tube was inspected on this scaffold.

However, as described above, since the steel wire 6 is used for fixing the clamp 5 to the element tube A, the fixing operation is complicated, and moreover, only the steel wire 6 is used for fixing. It was so unstable.

[0005]

SUMMARY OF THE INVENTION According to the present invention, a plurality of element tubes arranged side by side in the front-rear direction in an upright state can be smoothly and reliably fixed to the foremost element tube, and a scaffold plate is supported. It is an object of the present invention to provide a clamp that can support and fix a horizontal member smoothly and reliably.

[0006]

According to a first aspect of the present invention, there is provided a clamp for fixing a cross member to a front surface of a foremost element pipe in a plurality of element pipes arranged in a longitudinal direction in an upright state. A clamp, comprising: a clamping member fixed to the element tube; and a coupling member integrally fixed to a front surface of the clamping member to support and fix the transverse member in an inserted state, wherein the clamping member is an element tube. A receiving recess for receiving one side of the element tube, a movable metal piece facing the other side of the element tube and opposing the receiving concave portion, and the movable metal piece disposed outside the foremost element tube for receiving the movable metal piece. And an operating rod for moving forward and backward with respect to the clamp.

According to a second aspect of the present invention, in the clamp according to the first aspect, the front and rear widths of the receiving concave portion and the opposing holding surface of the movable metal piece are formed to be smaller than the diameter of the element tube. It is characterized by the following.

According to a third aspect of the present invention, in the clamp according to the first or second aspect, the receiving recess is formed in a receiving metal piece on one side of the holding metal. A fixing plate piece bent inward is continuously provided at the front end of the metal piece, and a connecting metal is fixed to the front surface of the fixing plate piece, and further bent rearward to the edge of the fixing plate piece. The operating plate is screwed through the center of the side plate, and the movable bracket is attached to the tip of the operating rod.

According to a fourth aspect of the present invention, there is provided the clamp according to any one of the first to third aspects, wherein the receiving recess is provided on one side of the holding bracket and inside the front end of the receiving bracket. It is formed in a continuous portion with the fixed plate piece bent toward the direction, and the connecting bracket is fixed to the front surface of this fixed plate piece, and it is bent backward at the edge of the fixed plate piece. A side plate piece is continuously provided, and further, a rear end portion of the side plate piece is bent inward to form a bent plate piece, and an operating rod is threaded through the center of the bent plate piece toward the receiving recess. The movable bracket is attached to the tip of the operating rod.

According to a fifth aspect of the present invention, in the clamp according to the first or second aspect, the receiving recess is formed in a receiving metal piece on one side of the holding metal. A fixed plate piece bent inward is continuously provided at the front end of the metal piece, and a connecting metal is fixed to the front surface of the fixed plate piece. Further, the movable metal piece is attached to an end of the fixed plate piece. The front end is engaged with the receiving recess so as to be able to freely advance and retreat, and the element tube is formed so as to be able to sandwich the element tube by the rear half facing surface of the receiving recess and the movable metal piece, and the operating rod is inserted between the front half. Then, the nut is screwed into the threaded portion engraved on the operating rod to fasten the movable metal piece.

[0011]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An example of a clamp according to the present invention will be described with reference to the drawings. As shown in FIG. 1, the clamp of the present invention supports, in an inserted state, a holding member 1 for holding an element tube and a horizontal member fixedly attached to a front surface of the holding member 1 and being bridged between the element tubes. , And a connection fitting 2 to be fixed.

The clamp 1 comprises a receiving piece 11, a movable piece 12, and an operating rod 13. The receiving metal piece 11 is formed by bending one side end of a metal fixing plate piece 14 having a rectangular front surface to which the connecting metal member 2 is fixed to the front surface by welding, toward the rear. , The fixed plate piece
On the other side edge of the side piece 14, a side plate piece 15 facing the receiving metal piece 11 is formed to be bent rearward.

The front and rear width of the receiving metal piece 11 is formed to be equal to or smaller than the diameter of the element tube to be sandwiched, while the central portion in the front and rear width direction is bent outward in a flat rectangular shape. The inner side surface is formed in a receiving recess 11a for receiving one side surface of the element tube. The receiving recess 11a may be formed in a concave arcuate surface along the outer peripheral curvature of the element tube.

The movable metal piece 12 is formed by bending a vertically elongated thick plate-like body slightly narrower than the width of the receiving metal piece 11 in the vertical direction into a flat rectangular shape outward. The front and rear width is formed to be smaller than the diameter of the element tube to be sandwiched. Note that the movable metal piece 12 may also be curved in a convex arc outwardly along the outer peripheral curvature of the element tube, similarly to the receiving metal piece 11.

A screw hole 16 is formed in the center of the side plate piece 15 so as to penetrate both sides, and an operating rod 13 formed of a screw rod is inserted into the screw hole 16 to advance and retreat with respect to the receiving metal piece 11. It is threaded freely. A receiving recess is provided at the tip of the operating rod 13.
A central portion of the movable metal piece 12 is attached so as to face 11a, and the movable rod 12 can be advanced and retracted with respect to the receiving recess 11a by screwing and retracting the operation rod 13. Make up.

As shown in FIG. 4, the movable bracket 12 is attached to the distal end of the operating rod 13 by drilling a small-diameter distal end of the operating rod 13 at the center of the movable bracket 12. And is rotatably mounted on the peripheral wall of the hole 17 so as to prevent the hole 17 from coming off.

With such a configuration, one side surface 12a of the movable fitting piece 12 and the receiving recess 11 of the receiving fitting piece 11 are formed.
a of the movable metal piece 12
And the inner side surface of the receiving recess 11a form an opposing holding surface, and the element tube is held from both sides by the opposing holding surface. The receiving recess 11a, that is, the receiving metal piece
A gap 3 that exposes the rear peripheral surface of the element tube when the element tube is sandwiched is formed between the rear end edges of the movable metal piece 11 and the movable metal piece 12.

Further, the other end of the operating rod 13 is provided with
As shown in FIG. 7, an annular operating portion 13a for facilitating the turning operation of the operating rod 13 is integrally provided, and a rod-shaped body is inserted into a through hole of the annular operating portion 13a to thereby operate the operating rod 13. By rotating the rod in the direction in which the screw 13 advances into the receiving recess 11a, the element tube can be easily firmly clamped from both sides. In addition, as shown in FIG.
Instead of 13a, a knob-like operation section 13b without a through-hole may be used.

The connecting fitting 2 is integrally fixed to the front surface of the fixed plate piece 14 of the holding fitting 1.
Has the same structure as that conventionally used. As an example, the connection fitting 2 shown in FIG.
Is composed of a rear connecting member 21 and a front connecting member 22. A horizontal member insertion hole 23 through which a horizontal member can be inserted is formed between opposed inner surfaces of the front and rear connecting members 21 and 22.

A lower end of the front connecting member 22 is pivotally mounted on the lower end of the rear connecting member 21 so as to be rotatable in the front-rear direction. Member 2
A bolt 24 for connecting the upper ends of the first and the second 22 in a separable manner is rotatably mounted at the rear end in a vertically rotatable manner.

On the other hand, the upper end of the front connecting member 22 has a U
A locking hole 22a is formed in the shape of a letter, and the bolt 24 is formed in a state where upper ends of the front and rear connecting members 21 and 22 are opposed to each other.
Is inserted into the locking hole 22a from above the locking hole 22a, and a nut 24 screwed into a screw portion formed in the bolt 24 is inserted.
By tightening a, the horizontal member is sandwiched and supported by the opposing inner surfaces of the front and rear connecting members 21 and 22.

Next, how to use the clamp will be described. As shown in FIG. 2, in the boiler furnace, a plurality of element tubes A arranged in the front-rear direction in a standing state are grouped, and these element tube rows are arranged at predetermined intervals in front, rear, left and right. It is arranged.

The foremost element tube A in the element tube row
To fix the clamp, first, the movable metal piece 12 is moved to the other side so that the distance between the receiving recess 11a of the clamp metal fitting 1 of the clamp and the rear edge of the movable metal piece 12 is larger than the diameter of the element tube A. After adjusting by retracting to the receiving recess
The foremost element tube A of the element tube A arranged as described above between the receiving recess 11a and the one side surface 12a of the movable member piece 12 through a gap between the rear end edges of the movable member piece 11a and the movable member piece 12. Insert ₁₁ places. Thereafter, by rotating the annular operating portion 13a of the operating rod 13 in the tightening direction, the movable metal piece 12 is advanced to one side, and the distance between the receiving recess 11a and the inner surface of the movable metal piece 12 is reduced. in, sandwiched from both sides of the element tube a ₁₁ by receiving recess 11a and the movable metal piece 12, to secure the clamp B ₁ at a predetermined position of the element tube a ₁₁ (see FIG. 3).

Here, the operating rod 13 for moving the movable metal piece 12 to both sides is located outside the element pipe A _{11 held} between the receiving recess 11a and the movable metal piece 12, specifically, the element pipe A _11. Is disposed in front of the rear surface, that is, at the center of the side plate piece 15 in a direction perpendicular to the element tube row, so that the foremost element tube A to be sandwiched is held.
₁₁ and the element pipe A ₁₂ following this element pipe A ₁₁
Even when there is almost no gap between the movable bracket piece and the operating pipe 13 without operating the element tube A ₁₂
Can be smoothly advanced and retracted to 12, it is possible to perform the work of fixing the element tube A ₁₁ of the clamp B ₁ smoothly.

Further, the receiving recess 11a and the movable metal piece 12
Since the front and rear width is the diameter equal to or slightly element tube A ₁₁ sandwiched, as shown in FIG. 4,
These receiving recesses 11a and receiving input recess 11a and the rear edge of the movable fitting piece 12 even in a state where the clamping elements tube A ₁₁ by the movable metal piece 12 does not reach the circumferential plane of the element tube A _11, receiving recesses 11a , i.e., between the rear edge of the receiving metal fitting piece 11 and the movable bracket pieces 12 the gap 3 for exposing the peripheral surface after the element tube a ₁₁ is formed.

Thus, the receiving recess 11a and the movable metal piece
Since the 12 gap 3 for exposing the peripheral surface after the element tube A ₁₁ between the rear edge of which is formed, subsequent elements tube proximate or adjacent to the element tube A ₁₁ and the element between A ₁₁ sandwiched almost no gap, without interference with the element tube a ₁₂ in the case the receiving recess 11a and the movable metal piece 12 of the clamping bracket 2 is no room to intervene, smooth yet firmly received in between the a ₁₂ Recess 11a and movable bracket piece 12
It can be sandwiched element tube A ₁₁ by. The operation of mounting the clamp on the foremost element tube A of the element tube row is also performed on the foremost element pipes A ₂₁ , A ₃₁ , A ₄₁ ... Of the other element tube rows. The clamps B ₂ , B ₃ , B _4, ... Are fixed at the same height position of the pipes A ₂₁ , A ₃₁ , A ₄₁ ,.

Next, the connecting metal fittings 2 of the clamps B ₁ and B ₂ fixed to the foremost element tubes A ₁₁ and A ₂₁ of the element tube rows arranged side by side with an interval in the left-right direction.
The horizontal member C ₁ is inserted into and supported in the inside 2, and is sandwiched and fixed by the front and rear connecting members 21 and 22 of the connecting fitting 2. Furthermore, in the same manner as described above, the element tube element tube array of the rear A _31, clamp secured to A ₄₁ B _3, also between B ₄ to secure the horizontal member C ₂ in erection state. Thereafter, scaffolds D ₁ and D ₂ are erected between the upper and lower cross members C ₁ and C ₂ to form a scaffold, and the element pipe A is inspected on the scaffolds D ₁ and D ₂ .

In the above-described clamp, the description has been given of the case where the connecting fitting 2 is fixed to the front surface of the holding fitting 1 so as not to rotate. However, the holding fitting 1 and the connecting fitting 2 are integrally provided so as to be rotatable with each other. may have been, in this manner the clamping bracket 1 connecting fitting 2 and the freely rotating together, for example, an element tube a ₁₁ and the element tube a ₂₁ is not disposed in parallel, the one Even in the case of being arranged in a slightly inclined state, it is possible to absorb the inclination by rotating the connecting fitting 2 of the clamp fixed to the one element tube A with respect to the holding fitting 1. Thus, the horizontal member C can be smoothly and reliably installed between the element tubes A.

In the clamp, a side plate 15 bent rearward is connected to the edge of the fixed plate 14, and the operating rod 13 is threaded through the center of the side plate 15. A description has been given of the case where the movable bracket piece 12 is attached to the tip of the operating rod 13. However, the present invention is not limited to this. For example, as shown in FIG. A connecting piece 2 is formed at a continuous portion of a stopper piece 11 and a fixed plate piece 14 bent inward at the front end of the receiving piece 11, and the connecting fitting 2 is fixed to the front surface of the fixed plate piece 14. Along with
Side plate 15 bent rearward at the edge of the fixed plate 14
Further, the rear end of the side plate 15 is bent inward to form a bent plate 15a, and the operating rod 13 is provided at the center of the bent plate 15a toward the receiving recess 11a. The movable metal piece 12 may be attached to the tip of the operating rod 13 by screwing. The same parts as those of the clamp shown in FIG. 1 are denoted by the same reference numerals, and description thereof will be omitted. Only different parts will be described below.

The clamp shown in FIG. 5 supports and fixes a holding member 1 for holding the element tube and a horizontal member fixedly attached to the front surface of the holding member 1 and extending between the element tubes while being inserted. And a connecting metal fitting 2.

The holding member 1 includes a receiving member 11, a movable member 12, and an operating rod 13. The receiving metal piece 11 is formed by bending one side end of a metal fixing plate piece 14 having a rectangular front surface to which the connecting metal member 2 is fixed to the front surface by welding, toward the rear. A receiving recess 11a is formed in the bent inner surface of the continuous portion between the receiving metal piece 11 and the fixing plate piece 14, and a side plate facing the receiving metal piece 11 is formed on the other side edge of the fixing plate piece 14. The piece 15 is bent obliquely outward and rearward.

The front and rear width of the receiving metal piece 11 is formed to be equal to or smaller than the diameter of the element tube to be clamped, and the rear end is bent slightly inward.
The inner surface of the bent portion is formed as a concave arc-shaped surface that matches the peripheral surface of the element tube to be clamped.

The front and rear width of the side plate 15 is formed to be longer than the diameter of the element tube to be sandwiched, and the rear end thereof is bent inward to form a bent plate 15a. The bent plate 15a is formed so as to face the receiving recess 11a.

The movable metal piece 12 is formed by bending a vertically elongated thick plate-like body slightly narrower than the width of the receiving metal piece 11 in the vertical direction into a flat rectangular shape outward. The front and rear width is formed to be smaller than the diameter of the element tube to be sandwiched. Incidentally, the movable metal piece 12 may be curved in a convex arc outwardly along the outer peripheral curvature of the element tube.

A screw hole 16 is formed in the center of the bent plate 15a of the side plate 15 to penetrate both sides.
The operation rod 13 formed of a screw rod is inserted into the screw hole 16 with the receiving recess 11.
It is threaded so that it can move forward and backward with respect to a. A center portion of the movable metal piece 12 is attached to a distal end portion of the operating rod 13 so as to face the receiving metal piece 11, and the movable metal piece 12 is moved forward and backward by screwing the operating rod 13. Is configured to be able to advance and retreat with respect to the receiving recess 11a.

The mounting structure of the movable metal piece 12 to the distal end of the operating rod 13 is the same as the structure of the clamp shown in FIG.

With this configuration, one side surface 12a of the movable metal piece 12 and the receiving recess 11a are in an opposed state, and the opposed surfaces constitute an opposed clamping surface.
The element tube is clamped from both sides by the opposed clamping surfaces. A gap 3 is formed between the receiving recess 11a of the receiving metal piece 11 and the rear edge of the movable metal piece 12 to expose the rear peripheral surface of the element pipe when the element pipe is sandwiched. .

Further, the other end of the operating rod 13 is provided with
As shown in FIG. 2, a knob-shaped operation portion 13b for easily rotating the operation rod 13 is provided integrally, and the knob-shaped operation portion 13b is gripped with a hexagon wrench or the like, and the operation is performed. Rod
13 in the direction in which the screw 13 moves toward the receiving recess 11a.
By rotating 13b, the element tube can be easily firmly clamped from both sides. Hex head
Instead of 13b, an annular operating section 13a as shown in FIG. 1 may be used.

A connecting member 2 is integrally fixed to the front surface of the fixing plate 14 of the holding member 1, and the connecting member 2 is the same as that used for the clamp shown in FIG. Therefore, the description is omitted.

Next, a method of using the clamp will be described. As shown in FIG. 2, in the boiler furnace, a plurality of element tubes A arranged in the front-rear direction in a standing state are grouped, and these element tube rows are arranged at predetermined intervals in front, rear, left and right. It is arranged.

The foremost element tube A in the element tube row
To fix the clamp, first, similarly to the clamp shown in FIG.
The distance between the rear edge of 11a and the movable metal piece 12 is
After the movable metal piece 12 is retracted to the other side so as to be wider than the diameter of the movable metal piece 12, the receiving recess 11 a and the movable metal piece 12
Between the one side 12a of 12, to insert the appropriate position of the element tube A ₁₁ of the foremost portion of the element tube A arranged as described above. Thereafter, by rotating the knob-like operating portion 13b of the operating rod 13 in the tightening direction, the movable metal piece 12 is advanced diagonally forward on one side, and the distance between the inner surface of the receiving recess 11a and the movable metal piece 12 is increased. , The element tube A ₁₁ is clamped from both sides by the receiving recess 11 a and the movable metal piece 12,
Securing the clamp B ₁ at a predetermined position of the element tube A ₁₁ (see FIG. 6).

Here, the operating rod 13 for moving the movable metal piece 12 to both sides is moved outside the element tube A ₁₁ sandwiched by the receiving recess 11a and the movable metal piece 12, ie, the side plate piece 15
Is arranged in the central part of the element pipe in a direction obliquely forward with respect to the element pipe row, so that the foremost element pipe A ₁₁ to be sandwiched and the element pipe A ₁₂ following the element pipe A ₁₁ even if there is little clearance between the operation of the operating rod 13 without the element tube a ₁₂ gets in the way and it is possible to smoothly advance and retreat the movable fitting piece 12, the element tube a ₁₁ of the clamp B ₁ Can be smoothly carried out.

[0043] Then, the element tube A ₁₁ is abutting the other side obliquely backward the other side by one side 12a of the movable metal piece 12, together with the catch, one side thereof, the receiving recess
An inner surface of the receiving metal piece 11 and an inner surface of the fixed plate piece 14 that constitute 11a are abutted, received and clamped from three sides, and a rear end of the receiving metal piece 11 is is formed on the concave arcuate surface that matches the peripheral surface of the tube, the element tube a ₁₁ which is held is embraced from behind by a rear end portion of the receiving metal fitting piece 11, the element tube ₁₁ is receiving recess
11a and one side surface 12a of the movable metal piece 12 stably hold and support it.

Here, the extension of the axis of the operating rod 13 threaded through the center of the bent plate piece 15a of the receiving metal piece 15 is attached to the rear part of the continuous portion of the receiving metal piece 11 and the fixed plate piece 14. If the element tube A ₁₁ is oriented so as to intersect the element tube A ₁₁ , the element tube A ₁₁ is pinched and supported in a state in which one side surface of the element tube A ₁₁ is pressed obliquely forward with respect to the receiving recess 11 a. tubes A ₁₁ are sandwiched, supported in a more stable state.

Further, the receiving recess 11a and the movable metal piece 12
Since the front-rear width is equal to or smaller than the diameter of the element tube A ₁₁ to be clamped, as shown in FIG.
These receiving recesses 11a and receiving input recess 11a and the rear edge of the movable fitting piece 12 even in a state where the clamping elements tube A ₁₁ by the movable metal piece 12 does not reach the circumferential plane of the element tube A _11, receiving metal fitting between the rear edge of the piece 11 and the movable bracket pieces 12 the gap 3 for exposing the peripheral surface after the element tube a ₁₁ is formed.

As described above, the receiving recess 11a and the movable metal piece
Since the 12 gap 3 for exposing the peripheral surface after the element tube A ₁₁ between the rear edge of which is formed, subsequent elements tube proximate or adjacent to the element tube A ₁₁ and the element between A ₁₁ sandwiched almost no gap, without interference with the element tube a ₁₂ in the case the receiving recess 11a and the movable metal piece 12 of the clamping bracket 2 is no room to intervene, smooth yet firmly received in between the a ₁₂ Recess 11a and movable bracket piece 12
It can be sandwiched element tube A ₁₁ by. The other usages are the same as those of the clamp shown in FIG. 1, and the description is omitted.

Finally, in the above description, the screw hole 16 formed in the center of the side plate piece 15 extending to the other end of the fixed plate piece 14
Although the clamp is described in which the operating rod 13 having the movable metal piece 12 attached to the distal end thereof is screwed forward and backward with respect to the receiving metal piece 11, the present invention is not limited to this, and as shown in FIG. The receiving recess 11a is formed in the receiving metal piece 11 on one side of the holding metal fitting 1, and the receiving metal piece 11
A fixed plate piece 14 bent inwardly is continuously provided at the front end of 11, and the connecting fitting 2 is fixed to the front surface of the fixed plate piece 14,
Further, the front end of the movable metal piece 12 is engaged with the end of the fixed plate piece 14 so as to be able to advance and retreat toward the receiving recess 11a, and the rear half of the receiving concave 11a and the movable metal piece 12 are opposed to each other. The element tube is formed so that it can be clamped by the surface, the operation rod 13 is inserted between the front halves, and a nut is screwed into a screw portion engraved on the operation rod 13, thereby tightening the movable bracket piece 12. The configuration may be as follows. The same parts as those of the clamp shown in FIG. 1 are denoted by the same reference numerals, and description thereof will be omitted. Only different parts will be described below.

That is, the holding member 1 includes a receiving member piece 11, a movable member piece 12, and an operating rod 13. The receiving bracket piece 11,
The rear half portion of the thick plate-shaped body having a laterally long rectangular shape is formed into a receiving concave portion 11a by curving outwardly in a convex arc shape, and an inner surface thereof is formed on an element tube holding surface, while a front end thereof is formed. At the rim, a rectangular front fixed plate piece 14 having the same vertical dimension as the receiving metal piece 11 is extended.

The front and rear width of the receiving recess 11a of the receiving metal piece 11 is equal to or smaller than the diameter of the element tube to be clamped. Since the receiving recess 11a is formed in a concave arcuate surface, similarly to the above, the element tube to be clamped can be securely clamped, and the clamped element tube can be clamped by the clamping fitting 1
From easily coming off. Note that the inner side surface of the receiving recess 11a may be formed by being bent outward in the same manner as described above.

On the other hand, the rear half of the movable metal piece 12 is also curved outwardly in a convex arc shape, the inner surface of which is formed on the element tube holding surface 12a, and the front and rear width thereof is the same as the element to be held. The width is equal to or smaller than the diameter of the tube. In addition, the element tube holding surface 12 of the movable metal piece 12
a may be curved in an outwardly-curved shape like the receiving metal piece 21b.

Then, the receiving recess 11a of the receiving metal piece 11 is formed.
The movable metal piece 12 is connected to the movable metal piece 12 by a connecting rod 13 with their inner surfaces facing each other. The element tube A is held between the receiving recess 11a and the element pipe holding surface 12a of the movable metal piece 12. . The connection state between the receiving metal piece 11 and the movable metal piece 12 will be described in detail. L-shaped engaging steps 14a, 14a are formed at the upper and lower ends of the fixed plate piece 14, while the movable metal piece is formed. The upper and lower edges of the front edge of the 12
Protrusions 12a, 12a which engage with 14a, 14a and slide on the engagement steps 14a, 14a toward the receiving recess 11a of the receiving metal piece 11.
a is formed.

Further, through holes 18, 19 penetrating through the both sides at the center of the front half of the receiving metal piece 11 and the movable metal piece 12, respectively.
The operating rod 13 is inserted between the through holes 18 and 19 to connect the receiving metal piece 11 and the movable metal piece 12.
A gap 3 is formed between the receiving recess 11a of the receiving metal piece 11 and the rear edge of the movable metal piece 12 so as to expose the rear peripheral surface of the element pipe when the element pipe A is sandwiched. .

Further, at the center of the lower end edge of the fixed plate piece 14, an element tube supporting portion 20 for supporting the outer front surface of the element tube A sandwiched between the receiving recess 11 a and the movable metal piece 12.
Is projected horizontally toward the rear, the protruding end of which is located rearward of the operating rod 13, and the protruding end of the protruding end corresponds to the curvature of the outer peripheral surface of the element tube A to be clamped. Thus, a concave arc-shaped portion 20a is formed.

In fixing the clamp to the element tube A, first, the receiving metal piece 11 of the clamp metal fitting 1 is used.
The movable fitting piece 12 is retracted to one side so as to adjust the distance between the rear end edge of the receiving recess 11a and the movable fitting piece 12 to be larger than the diameter of the element tube A, and then the receiving recess 11a and the movable fitting piece are adjusted. through the gap between the rear edge of the strip 12, opposite surface 11a of the receiving recess 11a and the movable metal piece 12, between 12a, to insert the appropriate position of the element tube a ₁₁ of foremost. At this time, element tube A ₁₁
One side surface and the front surface are adjusted so as to come into contact with the receiving concave portion 11a of the receiving metal piece 11 and the concave arc-shaped portion 20a at the rear end of the element tube supporting portion 20, respectively. Thereafter, the operation by turning the tightening direction of the nut 13c screwed to rod 13, thereby advancing towards the movable fitting piece 12 in the receiving recess 11a, the receiving recess 11a and the movable bracket piece the element tube A ₁₁
Sandwiched from both sides by a 12 to secure the clamp to a predetermined position of the element tube A _11.

Here, the operating rod 13 for moving the movable metal piece 12 to both sides is located outside the element tube A _{11 held} by the receiving recess 11a and the movable metal piece 12, specifically, the element pipe A _11. Forward of the rear surface, i.e., the receiving metal piece 11
Since it is arranged between the first half of the movable bracket piece 12 and
Even if there is little clearance between the element tube A ₁₁ of frontmost side sandwiched between the element tube A ₁₂ which subsequent to the element tube A _11, operating without the element tube A ₁₂ gets in the way rod 13 Can be operated to move the movable metal piece 12 smoothly, so that the operation of fixing the clamp to the element tube can be performed smoothly.

[0056] Further, since the longitudinal width of the element tube holding surface 12a of the receiving recess 11a and the movable metal piece 12 of the receiving metal fitting piece 11 is the diameter equal to or slightly element tube A ₁₁ sandwiched, as shown in FIG. 8, receiving input recess 11a and the movable metal piece 12 even in a state where the clamping elements tube a ₁₁ these receiving recess 11a and the movable metal piece 12
Without reaching the peripheral surface, the gap 3 to expose the circumferential plane of the receiving recess 11a and the movable bracket piece rear edge between elements tube A ₁₁ to 12 is formed after the rear edge of the element tube A ₁₁ .

As described above, the receiving recess 11a of the receiving metal piece 11
And since the gaps 3 that exposes the peripheral surface after the element tube A ₁₁ between the rear edge of the movable fitting piece 12 is formed, proximate or adjacent to the element tube A ₁₁ and the element tube A ₁₁ sandwiched almost no gap between the trailing element tube a _12, even when receiving metal fitting piece 11 and the movable bracket piece 12 of the clamping bracket 2 is no room to intervene, without interfering with the element tube a ₁₂ The element tube A is smoothly and firmly formed by the receiving recess 11a of the receiving metal piece 11 and the movable metal piece 12.
₁₁ can be clamped.

[0058]

The clamp according to the present invention is a clamp for fixing a transverse member to the front of the foremost element pipe in a plurality of element pipes arranged in the front-rear direction in an upright state. , And a connecting member which is integrally fixed to the front surface of the holding member and supports and fixes the transverse member in an inserted state, and the holding member receives one side surface of the element tube. A receiving recess, a movable metal piece opposed to the receiving recess and pressed against the other side surface of the element tube, and an operating rod disposed outside the foremost element tube to advance and retract the movable metal piece with respect to the receiving recess. And so that it can be fixed smoothly and securely to the element tube,
It is possible to smoothly and surely support a horizontal member that is bridged between the element tubes.

In addition, the holding metal fitting is provided outside the element pipe with a receiving concave part to be brought into contact with one side surface of the element pipe, a movable metal piece to be pressed against the other side surface of the element pipe opposite to the receiving concave part. Therefore, even when the clamp is fixed to the juxtaposed element tubes, the adjacent or adjacent element tubes hinder Thus, the operation rod can be operated without any trouble, and the movable metal piece can be smoothly advanced and retracted with respect to the receiving concave portion, and the operation of fixing the clamp to the element tube can be performed.

Further, if the front and rear widths of the receiving concave portion and the opposing holding surface of the movable metal piece are formed to be equal to or smaller than the diameter of the element tube to be held, almost no gap is formed between the juxtaposed element tubes. Therefore, even when there is no room for the receiving recess of the receiving bracket piece of the clamping bracket and the movable bracket piece to intervene, the element pipe is smoothly and firmly fixed by the clamping bracket without interfering with the adjacent or adjacent element pipe. Can be pinched.

Lastly, if an element tube supporting portion for supporting the element tube is provided integrally with the outer peripheral front surface of the element tube held by the holding member, the element tube supporting portion moves in the front-rear direction of the element tube. Of the element tube can be prevented, and the element tube can be more stably held.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an example of a clamp according to the present invention.

FIG. 2 is a plan view showing a use mode of the clamp.

FIG. 3 is a perspective view showing a use mode of the clamp.

FIG. 4 is a plan view showing a state in which an element tube is clamped and fixed to a clamp of the clamp of FIG. 1;

FIG. 5 is a perspective view showing another example of the clamp of the present invention.

6 is a plan view showing a state in which an element tube is clamped and fixed to a clamp of the clamp of FIG. 5;

FIG. 7 is a perspective view showing another example of the clamp of the present invention.

8 is a plan view showing a state in which an element tube is clamped and fixed to a clamp of the clamp of FIG. 7;

FIG. 9 is a perspective view showing a state where a clamp is fixed to an element tube using a conventional clamp.

[Description of Signs] 1 Clamping bracket 11 Receiving bracket 11a Receiving recess 12 Movable bracket 13 Operating rod 14 Fixed plate 15 Side plate 15a Bending plate 20 Element tube support 2 Connection bracket

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Satoshi Nakamura 3 Oecho, Minato-ku, Nagoya City, Aichi Prefecture Inside the Chubu Electric Power Co., Inc. (72) Inventor Jiro Yokoyama 3 Oecho, Minato-ku, Nagoya City, Aichi Prefecture Chubu Within the Thermal Power Center of Electric Power Co., Inc. (72) Takanobu Niwa 3rd Oecho, Minato-ku, Nagoya City, Aichi Prefecture Inside the Thermal Power Center of Chubu Electric Power Co., Inc. (72) Kazumi Fukahori 11 Gotomatsucho, Atsuta-ku, Nagoya City, Aichi 22 Chubu Plant Services Co., Ltd. (72) Inventor Fujio Oshigane 11-11 Gobonmatsucho, Atsuta-ku, Nagoya City, Aichi Prefecture 22 Chubu Plant Services Co., Ltd. (72) Ryuji Koyasu 11 Gobonmatsucho, Atsuta-ku, Nagoya City, Aichi Prefecture No.22 Inside Chubu Plant Service Co., Ltd. (72) Inventor Mikio Takamura 2-chome Konancho, Hekinan City, Aichi Prefecture 8-2 Inside Chubu Plant Service Hekinan Plant (72) Inventor Keizo Arita 2-8-2 Konancho, Hekinan City, Aichi Prefecture Inside Hekinan Plant of Japan Construction Industry Co., Ltd. (72) Inventor Hiroshi Morisako Shimogyo, Kyoto City 1 Shinjuku Engineering Co., Ltd., Nishihorikawa-dori

Claims (5)

[Claims] 1. A clamp for fixing a transverse member to a front surface of a frontmost element pipe of a plurality of element pipes arranged in a front-rear direction in an upright state, and a clamp for fixing the cross member to the element pipe. A connecting member integrally fixed to the front surface of the holding member and supporting and fixing the transverse member in an inserted state, wherein the holding member includes a receiving recess for receiving one side surface of the element tube and the receiving recess. And a control rod disposed outside of the foremost element tube for moving the movable member piece forward and backward with respect to the receiving recess. A clamp characterized in that: 2. The clamp according to claim 1, wherein the front and rear widths of the receiving concave portion and the opposing holding surface of the movable metal piece are smaller than the diameter of the element tube. 3. The receiving recess is formed in a receiving metal piece on one side of the holding metal fitting, and a fixed plate piece bent inward is connected to the front end of the receiving metal piece. A connecting bracket is fixed to the front surface of the fixed plate, and a side plate bent rearward is connected to the edge of the fixed plate, and the operating rod is screwed to the center of the side plate. The clamp according to claim 1 or 2, wherein the movable fitting piece is attached to a tip of the operating rod. 4. The receiving recess is formed in a continuous portion of a receiving metal piece on one side of a clamping metal piece and a fixed plate piece bent inward at a front end of the receiving metal piece, A connecting bracket is fixed to the front surface of the fixed plate piece, and a side plate piece bent rearward is continuously provided at an edge of the fixed plate piece,
Further, the rear end of the side plate is bent inward to form a bent plate, and an operating rod is threaded through the center of the bent plate toward the receiving recess. The clamp according to claim 1, wherein the movable metal piece is attached. 5. The receiving recess is formed in a receiving metal piece on one side of the holding metal fitting, and a fixed plate piece bent inward is connected to the front end of the receiving metal piece. Then, the connecting bracket is fixed to the front surface of this fixed plate piece,
The front end of the movable metal piece is engaged with the end of the fixed plate piece so as to be able to advance and retreat toward the receiving recess, and the element tube can be clamped by the rear surface of the receiving concave and the movable metal piece facing each other. The operating rod is inserted between the front halves, and the movable bracket is fastened by screwing a nut to a screw portion engraved on the operating rod. The clamp according to claim 1 or 2, wherein the clamp is provided.