JPH0610501A - Ditch cover receiving frame material and joint fitting thereof - Google Patents

Abstract

PURPOSE:To make it possible to simplify temporary fixing work before concrete placement and inter-connect each of receiving frames without any need for welding or the like in terms of joint fittings for receiving frame materials for ditch covers to be used as a means to support ditch covers installed to the upper part of side walls of a ditch. CONSTITUTION:A receiving frame material comprises a frame body 1 and anchor material 2 where the frame body 1 provides an L shaped section and the L-shaped section consists of a horizontal section 14 and a vertical section 12. A projected part 13 and a mount section 11 are formed on the horizontal section 14 while the anchor material 12 comprises a locking bolt threaded clamping section 21 which is L-shaped in its cross section and a lever section 22. A joint fitting 3 is U-shaped so that it may be fitted into the mount section 11 which constitutes a horizontal portion of the receiving frame material. A locking bolt is threaded into both ends of the fitting while its shape is designed so that it may fit to any arbitrary angle produced by the receiving frame material to be connected.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a receiving frame member for a groove lid and a connector for connecting the receiving frame member to form a groove for cable wiring, a groove for draining, and the like. The present invention relates to a receiving frame member for a groove lid that can be easily performed, and a connecting tool that can connect the receiving frame members with each other by a simple operation.

[0002]

2. Description of the Related Art In forming a groove for cable wiring or the like outdoors or indoors, a receiving frame member for supporting a groove lid is generally formed along the upper edge of the groove. .
FIG. 5 is a perspective explanatory view showing an arrangement example of the groove P and the receiving frame member 1. The groove P is formed by placing concrete at a position dug down from the floor surface GL. Receiving frame members 1 and 1 that support the side edges of the groove lid 4 are arranged in parallel at the upper edges of both sides of the groove P. FIG. 6 is a cross-sectional view showing an example of the receiving frame member 1. The receiving frame member 1 is composed of an L-shaped angle 51 and a steel bar member 52 having a rectangular cross section which is welded and fixed to the upper surface side thereof. Is supported by the upper surface of the angle 51, the movement of the side surface of the groove lid 4 is restricted by the steel bar 52, and the upper surface of the groove lid 4 is made to be the same as the floor level GL.

When the receiving frame members 1 are connected to each other in the longitudinal direction, or when the receiving frame members 1 and 1 are connected to each other by a bent portion or the like, the ends of the receiving frame members 1 are butt welded to each other. To form the joint W.

When the receiving frame material 1 is installed, the primary concrete 32 is first poured while leaving a space having a size and shape corresponding to the groove P. At this time, the anchor concrete reinforcing bar 53 is projected on the primary concrete 32, and then the supporting frame material 1 is held at a predetermined height and horizontal position, and this is welded to the supporting bar 53. Fix it. In this way, the receiving frame material 1 is temporarily fixed to the primary concrete 32,
Further, a secondary concrete 34 is cast and the receiving frame material 1 is embedded and fixed in the secondary concrete. Finally, the groove inner surface and the floor surface are finished with the mortar materials 31a and 31b.

However, in temporarily fixing the receiving frame member 1 using the anchor bar 53, complicated cutting / welding work had to be performed for accurate positioning. That is, the tendon 53 is rarely provided at an accurate position and at an appropriate length. In the actual construction method, the truss 53 and the receiving frame member are cut vertically or horizontally in order to adjust the arrangement. Or, it is often necessary to additionally provide an auxiliary iron bar, and it was very difficult to perform this cutting / welding work while positioning the receiving frame member 1 at a predetermined position.

Further, the welding work of the joint portion W between the receiving frame members is also accompanied by complicated work and causes a long time for the connection work.

[0007]

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide a receiving frame member for a groove lid, which can be easily fixed temporarily before placing concrete.
An object of the present invention is to provide a connecting tool that can easily connect the receiving frame members to each other at the bending connecting portion and the longitudinal connecting portion of the receiving frame member.

[0008]

In the receiving frame member of the present invention, the receiving frame member comprises a frame member having an L-shaped portion as an essential component and an anchor member detachably attached to the frame member. L
The letter-shaped portion is composed of a horizontal portion and a vertical portion, a protrusion is integrally formed on the upper surface of the horizontal portion, and a mounting portion for the anchor material is formed on the back side of the protrusion, while the anchor is formed. The material is composed of a sandwiching portion having a U-shaped cross section, and a rod portion integrally provided on the sandwiching portion, and the sandwiching portion is formed by screwing a tightening bolt that can advance and retreat toward the mounting portion. It is a summary.

Further, in the present invention, it is possible to use the rod portion and the tightening bolt as well, and in this case, the rod portion is provided so as to be freely attached to the holding portion, and A tightening bolt portion is formed on the rod portion so as to be movable back and forth toward the mounting portion of the holding portion.

Furthermore, the connector of the present invention has a U-shaped cross section, and fastening bolts are respectively screwed into both ends of the connector, and the connector has an angle matching the connecting angle of the receiving frame member. It has such a structure.

[0011]

The receiving frame member of the present invention comprises a frame member and an anchor member which is detachably attached to the frame member, and the anchor member can be attached to any position of the frame member by using fastening bolts. Therefore, the anchor material can be attached at an arbitrary position by abutting on the anchor scissors that is fixed in advance, and the entire receiving frame material can be temporarily fixed by a simple operation. As a result, it became possible to construct the receiving frame material accurately and in a short time at the temporary fixing position before placing concrete.

Further, since the connector of the present invention has a U-shaped cross section, and fastening bolts are respectively screwed into both ends of the connector, the end portions of the frame body having the mounting portion in the receiving frame member are butted against each other.
The abutting portion can be held by the connecting tool and fixed by the fastening bolts. That is, the adjacent receiving frame members can be connected by a simple operation of only tightening the tightening bolts. If the connecting tool is formed in advance so as to match the connection angle of the receiving frame members, the receiving frame members will be 90 degrees apart.
It can be connected at any angle such as 80 degrees.

[0013]

1 is a sectional view showing a typical embodiment of the present invention, and FIG. 2 is a perspective view showing the receiving frame member shown in FIG. The receiving frame member is composed of a frame member 1 and an anchor member 2, the cross section of the frame member 1 is formed to have an L-shaped portion, and the L-shaped portion is composed of a horizontal portion 14 and a vertical portion 12. Horizontal part 1
4 is provided with a protrusion 13 and a seat 14a for mounting the groove lid 4 is formed on the front side (right side in FIG. 1) of the protrusion 13 and the rear side (see FIG. 1). Mounting part 11 on the left side
Is formed.

On the other hand, the anchor material 2 is a holding portion 2 having a U-shaped cross section.
1 and a rod portion 22 are integrally formed, and a tightening bolt 23 is screwed into the lower portion of the holding portion 21. Reference numeral 23a indicates a butterfly-shaped grip portion of the tightening bolt 23.

The materials of the frame 1 and the anchor material 2 are not particularly limited, and the frame 1 is either a metal such as an aluminum alloy or a synthetic resin material (including FRP) or a composite material thereof. On the other hand, the anchor material 2 is preferably made of steel or stainless steel in consideration of weldability with the scissors 54. Also, as shown in FIG.
It is recommended to form pores 12a in the holes, and the frame 1 can be easily temporarily fixed to a wooden formwork for concrete pouring (not shown) by means such as penetrating the pores 12a with a nail 19. . Furthermore, in the above example, since the butterfly-shaped gripping portion 23a is formed as the tightening bolt 23, the anchor material 2 can be easily fixed without using a tool. As the tightening bolt, a normal hexagonal bolt, a bolt having a dodecagonal type or a one-type screw head, or the like may be used.

As a method for temporarily installing the receiving frame material, for example, while holding the frame body 1 in accordance with a reference line applied to the concrete placing formwork, the nail 19 is used to temporarily attach it to the placing formwork. To do. Then, at the attachment portion 11 of the frame body 1, the anchor material 2
By sliding in the longitudinal direction (arrow A, arrow B direction in FIG. 2) to abut the anchor standing bar 54 that has been erected in advance, and tighten it to the mounting portion 11 with the tightening bolt 23. Fix it. Further, the rod portion 22 of the anchor material 2 and the bar 54 are welded to firmly and temporarily fix the receiving frame material. After attaching an arbitrary number of anchor members 2 in the longitudinal direction of the frame body 1 in this way, concrete is placed up to the site shown by the chain line in FIG. 1 and the receiving frame member is embedded and fixed in the concrete. The nail 19 used for temporarily attaching the receiving frame material is cut flat on the surface of the vertical portion 12 after the mold is removed so that it does not remain protruding inside the groove.

FIG. 4 is an explanatory view showing another embodiment of the receiving frame member of the present invention, in which the anchor member 2 has a holding portion 21 having a U-shaped cross section.
And a tightening bolt 23c (which also serves as the rod portion 22 and the tightening bolt 23 in FIG. 1), and a screw portion which is screwed with the holding portion 21 is formed at one end of the tightening bolt 23c. At the same time, the remaining portion constitutes the rod portion 23c. That is, the anchor material 2 is integrated by screwing the threaded portion of the tightening bolt 23c into an arbitrary position of the mounting portion 11 of the frame body 1, and the bar portion 22 of the tightening bolt 23c is inserted into the strut 5.
The entire receiving frame member is temporarily fixed by being joined to No. 4. Incidentally, in the case of this embodiment, when the threaded portion of the tightening bolt 23c is screwed into the holding portion 21, the tightening bolt 2
Since the screwing is performed while rotating 3c, the rod 22 may be screwed at a position away from a position convenient for joining with the scissors muscles 54. Therefore, the frame 1 itself or the contact portion of the frame 1 with the screw portion, or the tip member of the screw portion is made of a relatively soft material,
For example, if the threaded portion can be screwed so as to be embedded to an arbitrary depth by being formed of plastic, FRP resin, wood or the like, the rod portion 22 is joined to the scissors muscle 54. It becomes possible to stop the screwing when it comes to a position convenient for the. At this time, if the nut 33 is tightened, the rod portion 22 does not loosen and turn. Further, in FIG. 4, spherical swelling portions 1a and 1b are provided inwardly at the ends of the frame body 1, so that the cast concrete is hugged in the cavity portions 1a 'and 1b', so that the frame body 1
The effect of strengthening the integrity with the concrete is obtained.

An embodiment of the connector 3 according to the present invention will be described in detail with reference to FIG. The connector 3 has a U-shaped cross section, and is configured so that the mounting portion 11 of the frame 1 can be inserted therein, and the fastening bolts 2 are provided at both ends of the connector 3.
3, 23 are screwed together. The fastening bolts 23, 23 fix the end of the mounting portion of the frame body 1. For example, in the example of FIG. 2, the end faces of the frame bodies 1 to be connected are butted against each other, the connection tool 3 is fitted into the mounting portion 11 so that the side end portions of the adjacent frame bodies 1 are bridged, and the tightening bolts 23, 23 are tightened. Tighten 2
The two frame bodies 1 and 1 are connected.

As shown by the broken line in FIG. 2, it is preferable to integrally form a rod 3a on the back side of the connector 3, and the rod 3a
The frame 1 can be firmly and temporarily fixed by fixing a to the anchor bar. Further, the receiving frame member that can be connected by the connecting tool 3 is not limited to the example shown in the figure, and may have any cross-sectional shape as long as a horizontal mounting portion is formed on the back side of the receiving frame member.

FIG. 3 (plan view) shows an example in which the frame bodies 1 and 1 are connected at 90 degrees, and the connection tool 3B is formed in a shape bent at 90 degrees, and the connection end face is cut at 45 degrees. The one frame body 1 and the one frame body 1 are connected to each other via the connector 3B. In the above-mentioned example, the frame 1 and the connector 3 are shown to be composed of only straight portions, but they may be formed to have a curved portion in the horizontal direction.

[0021]

Since the receiving frame member of the present invention is constructed as described above, an arbitrary number of anchor members can be attached to an arbitrary position of the frame body, and the receiving frame member can be temporarily installed easily. At the same time, the frame body can be firmly supported by the anchor material after placing concrete. Also, when the concrete was poured, the frame did not float up. Further, by using the connector of the present invention, it is possible to easily connect the adjacent receiving frame members without welding or bonding.

[Brief description of drawings]

FIG. 1 is a cross-sectional view showing an embodiment of a receiving frame material of the present invention.

FIG. 2 is a perspective explanatory view showing an embodiment of the receiving frame member shown in FIG. 1 and the connector of the present invention.

FIG. 3 is a plan view showing another example of the connector of the present invention.

FIG. 4 is a cross-sectional explanatory view showing another embodiment of the receiving frame member of the present invention.

FIG. 5 is an explanatory view showing an example of construction of a conventional groove.

6 is a cross-sectional explanatory view of a groove formed by the construction example of FIG.

[Explanation of symbols]

 1 Frame 2 Anchor material 3 Connector 11 Mounting part 12 Vertical part 13 Projection part 14 Horizontal part 21 Clamping part 22 Rod part 23 Tightening bolt

Claims (5)

[Claims] 1. A receiving frame member which is provided at an upper edge portion of a side wall of a groove and supports a lid for the groove, the receiving frame member having a L-shaped portion as an essential component, and detachable from the frame member. An L-shaped part of the frame body is composed of a horizontal part and a vertical part, a protrusion is integrally formed on the upper surface of the horizontal part, and the protrusion is formed on the back side of the protrusion. Is formed with a mounting portion for the anchor material, while the anchor material is composed of a sandwiching portion having a U-shaped cross section and a rod portion integrally provided on the sandwiching portion, and the sandwiching portion advances and retreats toward the mounting portion. A receiving frame material for a groove lid, which is characterized in that a free tightening bolt is screwed. 2. A receiving frame member which is provided at an upper edge portion of a side wall of the groove and supports the groove lid, wherein the receiving frame member is a frame body essentially having an L-shaped portion, and is detachable from the frame body. An L-shaped part of the frame body is composed of a horizontal part and a vertical part, a protrusion is integrally formed on the upper surface of the horizontal part, and the protrusion is formed on the back side of the protrusion. Is formed with a mounting portion for the anchor material, while the anchor material is composed of a sandwiching portion having a U-shaped cross section, and a rod portion provided on the sandwiching portion so that the mounting angle is freely adjustable. A receiving frame material for a groove lid, characterized in that a tightening bolt portion is formed which is capable of advancing and retracting toward the portion. 3. The receiving frame member according to claim 1, wherein a bulging portion for embracing concrete is formed at an arbitrary position on an end portion of the frame body. 4. A connector for a receiving frame member having a horizontal mounting portion formed at least on the back side, wherein the connector has a U-shaped cross section, and both ends thereof are provided with tightening bolts. The connection tool for the receiving frame member, wherein the connection tool is formed at an angle that matches the connection angle of the receiving frame material. 5. The receiving frame member connecting tool according to claim 4, wherein a bulging portion for embracing concrete is formed at an arbitrary position on an end portion of the receiving frame member.