JP2020158970A - Trough protective device - Google Patents

Abstract

To provide a trough protective device which can prevent troughs along the track from being damaged even if heavy service vehicles and trucks come into the tracks.SOLUTION: In a trough protective device which includes a pair of riding blocks (11A, 11B) that are installed at a predetermined interval across the trough to be protected, and a steel plate (12) having an almost rectangular shape in the top view, which is installed across the pair of riding blocks so as to cover the top of the trough, on each of the pair of riding blocks, a flat part on which the lower surface of the side part of the steel plate is placed is formed on the inner part of the upper surface thereof, an inclined part that inclines downward toward the outside is formed on the outside of the flat part on the upper surface, and an embedding plug is provided at a predetermined position on the flat part, bolt insertion holes are formed at predetermined positions on both sides of the steel plate, and the steel plate is fixed to the pair of riding blocks by bolts that penetrate through the bolt insertion holes and are screwed onto the embedding plug.SELECTED DRAWING: Figure 2

Description

The present invention relates to a trough and a trough lid protection device for laying a cable, and more particularly to a technique effective for use in a trough protection device installed in a railway track or a substation.

In a railway track, for example, as described in Patent Document 1, a trough for laying a signal line for transmitting a signal or supplying power to railway equipment and a cable for supplying a power line. Is installed along the track, and the upper part of the trough is blocked by a trough lid divided in the extending direction.
In addition, the trough lid for railways is generally made of concrete from the viewpoint of durability, robustness, cost and the like. A similar trough is also installed in the substation.

By the way, in a railway track, when working on the track or constructing track equipment, a work vehicle such as a heavy road-rail vehicle or a truck for transporting equipment wants to cross the trough and enter the track. Sometimes. Conventionally, in order to cross a trough where a heavy work vehicle or truck is laid in a track where a trough for laying a cable is provided, when the vehicle rides on the trough lid and enters, the weight of the vehicle is transferred to the trough lid. It may act and damage the trough lid. Therefore, for example, as shown in FIG. 6, a pair of rafters 31, 31 are installed with the trough 20 in between, and a steel plate 32 is placed on the rafters 31, 31 so as to straddle the trough to cover the trough lid. The 22 and the trough body 21 were protected to prevent damage.

Japanese Unexamined Patent Publication No. 5-98602 JP-A-2002-138451

On the other hand, conventionally, as described in Patent Document 2, for example, there is known a technique for increasing the strength of a trough lid by arranging reinforcing bars inside the trough lid made of concrete. However, since it is not possible to know in advance where the work and construction of the railway track will be carried out, using the above-mentioned high-strength trough lids for all the trough lids along the track will cause a significant cost increase. Further, even if the strength of the trough lid is increased as described above, if the strength of the trough body is not sufficient, the trough body cannot be prevented from being damaged due to the entry of a work vehicle or a truck, and the strength of the trough body is increased. If you try, there is a problem that it will lead to further cost increase. Furthermore, the work and construction of railway tracks may be urgent.

The present invention has been made by paying attention to the above-mentioned problems, and an object of the present invention is to follow a track even if a heavy work vehicle or truck enters the track without causing a significant cost increase. It is an object of the present invention to provide a trough protection device capable of preventing the trough (trough body and trough lid) from being damaged.
Another object of the present invention is to provide a trough protection device that is easy to handle in the case of installation or removal work using a machine such as a man or a crane and can respond to an emergency. To do.

In order to achieve the above object, the present invention
A pair of riding blocks installed at predetermined intervals across the trough to be protected, and a top view substantially rectangular that is installed across the pair of riding blocks so as to cover the upper part of the trough. In a trough protection device with a shaped steel plate
In each of the pair of riding blocks, a flat portion on which the lower surface of the side portion of the steel plate is placed is formed on the inner portion of the upper surface, and the outer side of the flat portion on the upper surface is inclined downward toward the outside. An inclined part is formed
An embedded plug is provided at a predetermined position on the flat portion.
The steel plate is configured such that bolt insertion holes are formed at predetermined positions on both sides, and the steel plate is fixed to the pair of riding blocks by bolts that penetrate the bolt insertion holes and are screwed into the embedding plug. It was done.

According to the configuration as described above, the trough protection device can be configured only with concrete blocks, steel plates and bolts, that is, the number of parts is small and the trough does not need to be reinforced, which greatly increases the cost. Preventing troughs along the track (trough body and trough lid) from being damaged by passing over the trough protection device when a heavy work vehicle or truck enters the track without inviting Can be done.
Further, since the steel plate is fixed to the pair of riding blocks by bolts and can be assembled and disassembled, the work of installation and removal can be easily carried out. Therefore, it is possible to respond even in an emergency. Furthermore, the same trough protection device can be reused and reused when the construction work in one place is completed and the work is carried out in another place.

Here, it is desirable that the pair of riding blocks have a hanging lower surface or an inclined surface forming a step on the outer edge portion with respect to the ground contact surface, respectively.
According to such a configuration, it is possible to prevent the end portion from becoming too thin and causing damage (cracking or chipping) when the tires of a heavy work vehicle or truck come into contact with each other.

Further, preferably, inclined surfaces that incline downward toward the outside are formed at both end portions of the steel sheet.
According to such a configuration, it is possible to reduce the resistance of the work vehicle or truck passing over the trough protection device to the tires and prevent the tires from being damaged.

Further, preferably, in the pair of riding blocks, a shallow groove parallel to the extending direction of the trough is formed in the flat portion, and the embedding plug is provided in the groove.
When a plurality of riding blocks are installed side by side in the extending direction of the trough, a connecting plate having a bolt insertion hole formed at a position corresponding to the embedding plug is placed in the groove, and the steel plate and the steel plate It is fixed in a state of being sandwiched by the steel plate to the corresponding riding block by a plurality of bolts screwed into the embedding plug through the bolt insertion holes provided in the connecting plate. It is configured as follows.

According to the above configuration, it is possible to install a wide trough protection device that can safely pass not only a single tire work vehicle or truck but also a double tire work vehicle or truck by using common parts. In addition, in places where only single-tire work vehicles and trucks pass, by reducing the number of protective devices to be installed according to the width of the tire, it is not necessary to install extra parts, so the cost required for installation is reduced. It can be reduced.

Further, preferably, of the surface of the inclined portion of the pair of riding blocks and the surface of the steel plate, at least the surface of the inclined portion is formed with unevenness for slip prevention.
According to such a configuration, it is possible to prevent the tires of the work vehicle or truck passing over the trough protection device from slipping and derailing, and it is possible to prevent the tires from slipping and being unable to get over the trough. ..

As described above, according to the trough protection device according to the present invention, the trough along the track (trough body and trough) even if a heavy work vehicle or truck enters the track without causing a significant cost increase. It is possible to prevent the lid) from being damaged. In addition, during installation and removal work, it is easy to handle in both cases of manual work or work using machines such as cranes, and it is possible to realize a trough protection device that can respond even in an emergency. There is.

It is an exploded side view which shows one Embodiment of the trough protection device which concerns on this invention. It is a side view which shows the assembly state of the trough protection device of embodiment. The details of the riding block constituting the trough protection device of the embodiment are shown, (A) is a plan view, and (B) is a sectional view. The details of the crossover plate constituting the trough protection device of the embodiment are shown, (A) is a plan view, (B) is a sectional view, and (C) is an enlarged front view of a handle. FIG. 5 is a plan view showing a state in which the trough protection device of the embodiment of FIG. 1 is installed for a vehicle having double tires. It is a side view which shows the structural example of the conventional trough protection device.

Hereinafter, embodiments of the trough protection device according to the present invention will be described in detail with reference to the drawings.
FIG. 1 is an exploded side view showing an embodiment of the trough protection device according to the present invention, FIG. 2 is a side view showing an assembled state of the trough protection device, and FIG. 3 is a riding block constituting the trough protection device of the embodiment. A side view and a plan view showing the details of the above, FIG. 4 is a plan view and a plan view showing the details of the cross plate constituting the trough protection device of the embodiment, and a view showing the details of the handle.

As shown in FIGS. 1 and 2, the trough protection device 10 of the present embodiment has a pair of concrete riding blocks 11A and 11B installed on both sides of the trough 20 and above the trough 20. A steel plate crossover plate 12 is provided on the upper surfaces of the riding blocks 11A and 11B so as to cover the above. The distance between the riding blocks 11A and 11B is set to be slightly wider than the width of the trough 20 to be protected. Specifically, since there are troughs 20 to be protected having different widths, the distance between the riding blocks 11A and 11B so as to be wider than the width of the widest trough among them. Is set.

The riding blocks 11A and 11B have a substantially rectangular shape when viewed from above, and a flat portion on which the plate 12 is placed is formed on the upper surface over a predetermined range toward the inside, and the block goes outward from this flat portion. It is curved so that it becomes thinner. A flat inclined surface may be formed instead of the curved portion. Further, the height of the flat portion of the connecting plate of the riding blocks 11A and 11B is set so that the lower surface of the crossover plate 12 is several cm higher than the upper surface of the trough lid 22. Specifically, the height is set so that the lower surface does not come into contact with the upper surface of the trough lid 22 even if the crossover plate 12 bends due to the passage of a work vehicle or truck having a maximum allowable weight.

A hanging lower surface (step) 11a having a height of about 1 cm is formed at the outer ends (left and right ends of FIG. 1) of the riding blocks 11A and 11B, respectively. Instead of the hanging surface (step) 11a, a tapered surface having a relatively steep angle may be formed. By doing so, it is possible to prevent the end portion from becoming too thin and causing damage (cracking or chipping) when the tires of a heavy work vehicle or truck come into contact with each other. The facing inner side surfaces of the riding blocks 11A and 11B are also shown as hanging surfaces in FIG. 1, but may be formed so as to have a relatively steep angle.

Further, it is desirable that the riding blocks 11A and 11B have a structure in which the strength is increased by arranging reinforcing bars inside the concrete. Further, it is desirable to use a striped steel plate for the crossover plate 12 in order to suppress tire slippage.
Further, as shown in FIG. 3B, the curved surface portion of the upper surface of the riding blocks 11A and 11B is provided with a convex striped pattern similar to that of the striped steel plate.
In addition, embedded nuts (inserts) 13A and 13B are provided at positions near the inside of the upper surfaces of the riding blocks 11A and 11B, and bolt insertion holes 12a are provided at both ends (left and right in FIG. 1) of the cross plate 12. , 12b are formed, and the cross plate 12 can be fixed to the upper surface of the riding blocks 11A and 11B by the countersunk bolts 15A and 15B.

Further, shallow grooves 11b continuous in the trough extending direction (direction perpendicular to the paper surface) are formed at the embedding positions of the embedded nuts 13A and 13B on the upper surfaces of the riding blocks 11A and 11B, respectively. As will be described later, strip-shaped connecting plates 14A and 14B can be arranged on 11b. The depth of the groove 11b may be the thickness of one steel plate. Bolt insertion holes 14a and 14b are formed in the connecting plates 14A and 14B at positions corresponding to the embedded nuts 13A and 13B. The connecting plates 14A and 14B are formed so as to have a length N times (N is an integer) the width of the riding blocks 11A and 11B.
Further, on the side surfaces of the riding blocks 11A and 11B, handle recesses 11c are formed so that the operator can insert and lift the fingers of the hand. As shown in FIG. 3B, handle recesses 11c are similarly formed on the opposite side surfaces of the riding blocks 11A and 11B.

The crossing plate 12 is placed between the riding blocks 11A and 11B so that a work vehicle or a truck can safely pass through the upper surface, and is arranged in a direction orthogonal to the paper surface of FIG. It is formed so as to have a size corresponding to a plurality of (for example, two each, a total of four) mounting blocks 11A and 11B, and the bolt insertion holes 12a and 12b of the crossing plate 12 (see FIG. 4). ), And screwing the flat bolts 15A and 15B into the embedded nuts 13A and 13B of the riding blocks 11A and 11B, it also has a function to integrally connect the four riding blocks. ..

As described above, the size of the crossover plate 12 corresponding to the four riding blocks makes it possible to pass a work vehicle or a truck having a double tire T as shown in FIG. Because. Two types of crossover plates 12 having a size corresponding to four riding blocks and a crossing plate 12 having a size corresponding to two riding blocks are prepared, and a single tire is provided. A trough protection device may be constructed by using two riding blocks 11A and 11B and a narrow crossover plate 12 at a work site where only the work vehicle of No. 1 passes.

Further, as shown in FIGS. 4B and 4C, the crossover plate 12 of the present embodiment is attached with handles 16A and 16B formed by bending a metal round bar into a U shape. The insertion holes of the handles 16A and 16B are formed as loose holes, and in a normal state, the handles 16A and 16B fall into the holes by their own weight so as not to hinder the movement of tires of a work vehicle or a truck. In addition, female screw portions are formed at both ends of the handles 16A and 16B, and nuts are screwed to prevent them from coming off. By locking the wires to the handles 16A and 16B and lifting them with a crane, the entire trough protection device 10 can be lifted and moved.

Further, in the present embodiment, a striped steel plate having a convex striped pattern on the surface is used as the crossover plate 12 made of a steel plate, and it is possible to prevent the tire from slipping even in rainy weather.
Further, the crossover plate 12 is formed with tapered surfaces 12c at both ends that incline downward toward the outside, whereby resistance to the tires of a work vehicle or truck passing over the upper surface can be reduced and the tires can be prevented from being damaged. It has become like. The thickness of the crossover plate 12 is appropriately determined according to the strength of the material constituting the plate, the maximum weight of the work vehicle or truck to be allowed to pass, the distance between the riding blocks 11A and 11B, and the like. Further, in order to facilitate the movement and installation work, the crossover plate 12 may be formed by superimposing two steel plates. Then, in that case, a striped steel plate may be used as the upper steel plate.

As described above, in the trough protection device of the present embodiment, the distance between the riding blocks 11A and 11B is set so as to be wider than the width of the widest trough, so that the work vehicle or truck Even if the riding blocks 11A and 11B are displaced during the passage, they do not come into contact with the trough, and damage due to contact between the riding blocks 11A and 11B and the trough 20 can be prevented.
Further, since there are spaces between the riding blocks 11A and 11B and the trough 20, steel rods longer than the width in the front-rear direction of the riding blocks 11A and 11B are inserted into each space, and the crossing plate 12 By locking the wires at both ends of the steel rods protruding from the front and rear ends of the trough and hoisting them with a crane, the entire trough protection device 10 can be lifted and moved.

Next, how to install the trough protection device 10 of the present embodiment will be described.
To install the trough protection device 10, first, the riding blocks 11A and 11B are installed on both sides of the trough 20 at predetermined intervals with the trough 20 in between. At this time, if it is desired to pass a work vehicle or a truck having double tires, two riding blocks 11A and 11B are installed side by side. Next, the riding blocks 11A and 11B are installed at positions separated in the trough extension direction by the distance between the left and right wheels of the work vehicle in the same manner as described above. Subsequently, the connecting plates 14A and 14B are placed in the grooves 11b of the flat portions of the two riding blocks 11A and 11B arranged side by side so that the bolt insertion holes 14a and 14b match the embedded nuts 13A and 13B. Place.

After that, the crossover plate 12 is placed on the above-mentioned riding blocks 11A and 11B so that both side portions are in contact with the flat portions of the riding blocks 11A and 11B, and the bolt insertion holes of the crossover plate 12 are placed. Is adjusted so that it coincides with the bolt insertion holes 14a and 14b of the connecting plates 14A and 14B and the embedded nuts 13A and 13B of the riding blocks 11A and 11B. Subsequently, the countersunk bolts 15A and 15B are inserted into the bolt insertion holes of the crossing plate 12, and the crossing plates 12 are fixed to the riding blocks 11A and 11B by screwing them into the embedded nuts 13A and 13B and tightening them. Is finished.

FIG. 5 shows a state of the trough protection device after installation as viewed from above. Note that FIG. 5 shows an example of a trough protection device for passing a work vehicle or truck having a double tire T, and a trough protection device for passing a work vehicle or truck having a single tire is on board. The widths of the blocks 11A and 11B and the cross plate 12 may be about half of those in FIG. When the construction near the track is completed and the trough protection device is to be removed, the device may be disassembled and removed in the reverse procedure of the above.

As described above, the trough protection device of the above embodiment can be composed only of a concrete block having an embedded nut, a steel plate, and a bolt, that is, the number of parts is small and the trough does not need to be reinforced. Therefore, the trough (trough body and trough lid) along the track is damaged by passing over the trough protection device when a heavy work vehicle or truck enters the track without causing a significant cost increase. It can be prevented from being done. Further, the steel plate is fixed to a pair of climbing blocks by bolts, and the entire protective device 10 can be transported together by a crane or the like. Further, since it can be assembled and disassembled, the work of manual installation and removal can be easily carried out.

Although the embodiment of the present invention has been described above, the present invention is not limited to the above embodiment, and various modifications and changes can be made. For example, in the above embodiment, the handles 16A and 16B are provided on the crossover plate 12, but the handles 16A and 16B may be omitted. Further, although not shown, a warning pattern in which yellow and black stripe patterns are alternately arranged may be attached to the surface of the crossover plate 12 or the crossover plate 12 and the riding blocks 11A and 11B.

Further, in the above embodiment, the riding blocks 11A and 11B and the crossover plate 12 are installed only in the portion where the tires of the work vehicle or the truck pass to form the trough protection device, but 11A is not spaced. , 11B and the crossover plate 12 may be arranged side by side to form a continuous trough protection device.
Further, in the above embodiment, the present invention has been described on the assumption that the trough installed on the railroad track is protected, but the present invention is not limited to the trough for the railroad track, and may be located in a substation or on the side of a highway. It can also be used to protect the installed trough. Further, even when a work vehicle crosses a place where the cable is laid without being accommodated in a trough or the like, the cable can be protected by using the present invention.

10 Trough protection device 11A, 11B Riding block 12 Crossing plate 13A, 13B Embedded nut 14 Connecting plate 15A, 15B Bolt 16A, 16B Handle 20 Trough 21 Trough body 22 Trough lid

Claims (5)

A pair of riding blocks installed at predetermined intervals across the trough to be protected, and a top view substantially rectangular that is installed across the pair of riding blocks so as to cover the upper part of the trough. A trough protection device equipped with a shaped steel plate.
In each of the pair of riding blocks, a flat portion on which the lower surface of the side portion of the steel plate is placed is formed on the inner portion of the upper surface, and the outer side of the flat portion on the upper surface is inclined downward toward the outside. An inclined part is formed
An embedded plug is provided at a predetermined position on the flat portion.
The steel plate is characterized in that bolt insertion holes are formed at predetermined positions on both sides, and the steel plate is fixed to the pair of riding blocks by bolts that penetrate the bolt insertion holes and are screwed into the embedding plug. Trough protection device. The trough protection device according to claim 1, wherein each of the pair of riding blocks has a hanging lower surface or an inclined surface forming a step with respect to the ground contact surface at the outer edge portion. The trough protection device according to claim 1 or 2, wherein inclined surfaces that incline downward toward the outside are formed at both end portions of the steel plate. In the pair of riding blocks, a shallow groove parallel to the extending direction of the trough is formed in the flat portion, and the embedding plug is provided in the groove.
When a plurality of riding blocks are installed side by side in the extending direction of the trough, a connecting plate having a bolt insertion hole formed at a position corresponding to the embedding plug is placed in the groove, and the steel plate and the steel plate It is fixed to the riding block corresponding to the embedding plug by a plurality of bolts screwed into the embedding plug through the bolt insertion holes provided in the embedding plug in a state of being sandwiched by the steel plate. The trough protection device according to any one of claims 1 to 3. Claims 1 to 4, wherein at least the surface of the inclined portion of the surface of the inclined portion of the pair of riding blocks and the surface of the steel plate is formed with irregularities for preventing slipping. The trough protection device described in either.