JP3245163U - Metal wheel attachment used for cable laying ducts - Google Patents

Abstract

An object of the present invention is to provide a metal wheel mounting tool for use in a cable laying duct, which can be easily and reliably installed in a duct and allows the metal wheel to be used even in a curved duct. [Solution] A metal wheel attachment 7 used in a cable laying duct 1 of the present invention has a U-shaped main body consisting of an upper plate, a lower plate, and a connecting plate connecting the upper and lower plates, and a U-shaped main body. A screw hole provided in the upper plate, a holding screw screwed into the screw hole and capable of vertical movement, and a metal wheel mounting provided vertically on the outer surface of the connecting plate of the U-shaped main body. It consists of a plate and a hook insertion hole provided on the metal wheel mounting plate into which the hook of the metal wheel 3 is inserted. It is fixed to the duct by pinching the parts. [Selection diagram] Figure 3

Description

The present invention is a mounting tool for attaching a metal wheel (pulley) used when laying a cable in a cable-laying duct to the above-mentioned duct.

For example, a cable installed along a railway line is laid in a duct 1 of a tubular concrete structure having a rectangular cross section, as shown in FIGS. 4 to 6, for example.

The duct 1 is formed by installing a plurality of duct elements 2 of a desired length lined up on the ground or in a groove, and the duct elements 2 have a U-shaped cross section with an opening on the upper surface. It consists of a main body part 2a having a shape, and a cover part 2b which can be opened and closed and closes the upper opening of the main body part 2a.

Then, by removing the lid 2b, inserting the cable into the duct 1, and closing it with the lid 2b, the cable can be laid inside the duct 1.

When constructing the cable, for example, as shown in FIG. 7, a plurality of metal wheels 3 are provided at a predetermined interval in the duct 1, and the newly installed cable 4 is supported by the metal wheels 3. This makes it easier to pull the newly installed cable 4, thereby making it easier to lay the newly installed cable 4 inside the duct 1.

In particular, in a portion where the duct 1 is curved in the longitudinal direction, by using a plurality of metal wheels 3 in the curved portion, the newly installed cable 4 can be supported and pulled easily.

Note that 5 is an existing cable that has already been installed within the duct 1.

Further, FIG. 8 shows a general metal wheel 3, and the metal wheel 3 includes, for example, a disc-shaped wheel 3a having a rope guide groove on the outer circumferential surface, and a support that supports the shaft portion 3b of the wheel 3a. It consists of a frame 3c and a hook 3d fixed to the upper end of the support frame 3c. Further, the hook 3d is open on the axial side of the wheel, and a support for supporting the metal wheel 3 (for example, a threaded bolt shown in FIGS. 9 and 10) is inserted through the opening 3e. .

Conventionally, in order to install the metal wheel 3 in the duct 1, for example, as shown in FIGS. 9 and 10, a long object such as a threaded bolt 6 is inserted into the hook 3d of the metal wheel 3. Then, the support frame 3c of the metal wheel 3 is suspended between the adjacent lid parts 2b, 2b, and the threaded bolt 6 is supported on the adjacent lid part 2b, so that the metal wheel 3 is attached to the duct 1. Make sure to lift it inside.

Then, a weight such as the lid 2b of the duct is placed on the threaded bolt 6, and the metal wheel 3 is suspended within the duct 1.

For example, as a metal wheel to which a fixture is fixed, there is, for example, Patent Document 1.

Jitszen No. 56-117663

However, with the method of fixing the metal wheel using a weight such as a lid, the metal wheel may move and shift during construction.

In addition, since the direction of the pulley is fixed in the metal wheel to which the conventional fitting is fixed, there is a risk that the cable may come off in a curved duct.

The object of the present invention is to enable a metal wheel to be easily and reliably installed in a duct, and to also be usable even in a curved duct.

The metal wheel attachment used for the cable laying duct of the present invention has a U-shaped body consisting of an upper plate, a lower plate, and a connecting plate connecting the upper and lower plates, and a screw provided on the upper plate of the U-shaped body. a hole, a vertically movable clamping screw screwed into the screw hole, a metal wheel mounting plate provided vertically on the outer surface of the connecting plate of the U-shaped main body, and the metal wheel. The mounting plate has a hook insertion hole into which the hook of the metal wheel is inserted, and the edge of the duct lid is clamped between the lower plate and the lower end of the clamping thread. It is characterized by being fixed to the duct.

The clamping screw portion includes a screw body, a disc-shaped pad portion provided at the lower end of the screw body, and a rod-shaped handle portion extending in the radial direction provided at the top of the screw body. It is characterized by

Further, the hook insertion hole is characterized in that it is circular.

By using the metal wheel mount of this invention, the metal wheel can be installed easily and securely in the duct, and even when used in a curved duct, the rope can be supported by the metal wheel. become.

FIG. 2 is an explanatory perspective view of a metal wheel attachment used in the cable laying duct of the present invention. FIG. 3 is an explanatory front view of a metal wheel attachment used in the cable laying duct of the present invention. FIG. 2 is an explanatory front view of the metal wheel attachment used for the cable laying duct of the present invention in a state attached to the duct. FIG. 2 is an explanatory diagram of a duct for laying cables provided along a railroad track. It is a side view of the duct element which comprises a duct. It is a front view of the duct element which constitutes a duct. FIG. 2 is an explanatory diagram of laying a cable inside a duct using a metal wheel. It is an explanatory perspective view of a metal wheel. It is an explanatory view of a conventional method of fixing a gold wheel to a duct. It is an explanatory view of a conventional method of fixing a gold wheel to a duct.

Embodiments of the present invention will be described below with reference to the drawings.

As shown in FIGS. 1 and 2, the metal wheel attachment 7 used in the cable laying duct of the present invention has a U-shaped body consisting of an upper plate 8a, a lower plate 8b, and a connecting plate 8c connecting the upper and lower plates. 8, a screw hole 9 provided in the center of the upper plate 8a of the U-shaped main body 8, a holding screw 10 screwed into the screw hole 9 and movable forward and backward, and the U-shaped main body 8. A metal wheel mounting plate 11 provided perpendicularly on the outer surface of the connecting plate 8c of No. 8, and a circular hook insertion hole 12 provided in the center of the metal wheel mounting plate 11 into which a metal wheel hook is inserted. Become.

Further, the clamping screw part 10 includes, for example, a screw main body 10a, a disc-shaped adjuster pad part 10b provided at the lower end of the screw main body 10a, and a radial direction adjuster pad part 10b provided at the upper end of the screw main body 10a. The handle portion 10c is a rod-shaped handle portion 10c that extends to the left side, and the edge of the lid portion 2b of the duct 1 is held between the pad portion 10b and the lower plate 8b of the U-shaped main body 8.

The adjuster pad portion 10b is provided so as to be able to tilt slightly with respect to the screw body 10a, and is formed to easily grip the edge of the lid portion 2a.

Further, the U-shaped main body 8 is formed by, for example, bending a rectangular steel plate by 90 degrees.

Further, the metal wheel mounting plate 11 is perpendicular to the outer surface of the connecting plate 8c of the conical main body 8, and is vertically arranged to extend outward.

Since the metal wheel mount 7 of the present invention has the above-described configuration, the threaded main body 10a of the metal wheel mount 7 can be attached to the conical main body by rotating the handle portion 10c in forward and reverse directions. 8 can be freely moved up and down with respect to the upper plate 8a.

Therefore, by rotating the handle part 10c like a vise, the adjusting pad part 10b is separated from the lower plate 8b of the conical main body 8, and during this time, the lid part 2b of the duct 1 is closed. By inserting the edge and rotating the handle in the opposite direction, the edge of the lid 2b of the duct 1 is clamped and fixed by the adjustment pad 10b and the lower plate 8b of the conical main body 8. be able to,

Then, by inserting the hook 3d of the metal wheel 3 into the hook insertion hole 12 of the metal wheel attachment 7 fixed to the lid part 2b, the metal wheel can be supported by the lid part 2b.

Then, as shown in FIG. 3, the metal wheel 3 supports the lobe.

Therefore, since the hook is inserted into a circular hole formed in the metal wheel mounting plate 11 extending in the longitudinal direction of the lobe, the metal wheel 3 is tilted in the longitudinal direction of the lobe with respect to the metal wheel attachment 7. It is not only flexible, but also tiltable in the front and rear directions.

Therefore, even when used inside a curved duct, the rope can be supported by the metal wheel.

1 Duct 2 Duct element 2a Main body 2b Lid 3 Metal wheel 3a Wheel 3b Shaft 3c Support frame 3d Hook 3e Opening 4 New cable 5 Existing cable 6 Screw bolt 7 Metal wheel attachment 8 Contoured main body 8a Top plate 8b Lower plate 8c Connecting plate 9 Screw hole portion 10 Clamping screw portion 10a Screw body 10b Pad portion 10c Handle portion 11 Metal wheel mounting plate 12 Hook insertion hole

Claims (3)

a U-shaped main body consisting of an upper plate, a lower plate, and a connecting plate connecting the upper and lower plates;
A screw hole provided in the upper plate of the U-shaped main body;
a clamping screw part that is screwed into the screw hole and is movable up and down;
A metal wheel mounting plate provided vertically on the outer surface of the connecting plate of the U-shaped main body;
The metal wheel mounting plate has a hook insertion hole into which the hook of the metal wheel is inserted;
A metal wheel attachment for use in a cable laying duct, characterized in that it is fixed to the duct by clamping the edge of the lid of the duct between the lower plate and the lower end of the clamping thread. The clamping screw portion includes a screw body, a disc-shaped pad portion provided at the lower end of the screw body, and a rod-shaped handle portion extending in the radial direction provided at the top of the screw body. The metal wheel fixture for use in a cable laying duct according to claim 1. 2. The metal wheel mount for use in a cable laying duct according to claim 1, wherein the hook insertion hole is circular.

Images