JP6865121B2 - Protective cover for non-powered position orientation ground element - Google Patents

Description

The present invention relates to a protective cover for a non-powered position-oriented ground element that stores information necessary for railway maintenance and management and can transmit stored information in a non-contact manner.

Along the railway line, a non-powered position-locating ground element called a data depot (registered trademark) that can transmit information stored in a non-contact manner is installed to support the operation control of vehicles such as snowplows. There are times. Data depots (registered trademarks) currently in use include disc-shaped ones and box-shaped ones in which they are stored in a case.
Such a positioning ground element has a built-in coil for communication, a storage device such as a non-volatile semiconductor memory, a read circuit, a data transmission / reception circuit, etc., and includes a curve, a distance to a switching point, a maintenance vehicle, and an inspection vehicle. Information such as the kilometer required for the above is stored, and is arranged near the rail, for example, on a sleeper (mainly outside the rail). The vehicle traveling on the rail is equipped with a reader that reads the information stored in the ground element in a non-contact manner, and can read the position orientation information while traveling to grasp the position of the vehicle and the distance to a predetermined point. It is configured as follows.

Japanese Unexamined Patent Publication No. 06-64539

Under adverse conditions such as a snowstorm or a large amount of snow, it is extremely difficult to accurately determine the position of the switching point, etc. only by the driver's vision, but it is safe to use the information of the position locating ground element. Driving control becomes possible. As an invention relating to such a position-oriented ground element, for example, there is one described in Patent Document 1. The position-setting ground element that has been put into practical use in the past has a disk shape, and is usually fixed as it is or stored in a special box-shaped case on a sleeper with an adhesive. Further, the above-mentioned ground element capable of storing information can also be used by storing information other than the position information. In the present specification, the above-mentioned ground element including the ground element storing information other than the position information is included in the position orientation. Called a ground child.

In the track on which the above-mentioned position-setting ground element is installed, at the end of the trackbed maintenance work by the maintenance vehicle (ballast regulator), the sweeper (a type of brush) provided on the maintenance vehicle will be used to surface the trackbed surface. The ballast is leveled, but at that time, the sweeper may damage or peel off the positioning ground element. Therefore, in the vicinity of the sleepers where the positioning ground element is fixed, manual roadbed maintenance work is being carried out, which requires a lot of manpower and time, resulting in an increase in cost.

The present invention has been made by paying attention to the above-mentioned problems, and an object of the present invention is that the positioning ground element may be damaged or peeled off during roadbed maintenance work by a maintenance vehicle. The purpose is to provide a protective cover for unpowered position-locating ground elements for railways that can be eliminated.
Another object of the present invention is to provide a cover capable of temporarily stopping the communication function of the positioning ground element when switching railway equipment or solving a problem occurring in a railway system. is there.

In order to achieve the above object, the protective cover for the positioning ground element according to the present invention is
A base plate with an opening larger than the outer shape of the ground element mounted on the sleepers formed in the center and placed on the upper surface of the sleepers,
A box-shaped cover case formed of a non-magnetic material and having an opening at the bottom wall, which is placed on the upper surface of the base plate so that the opening corresponds to the opening.
A tightening means for pressing the cover case from above to prevent movement, and
A mounting jig having a locking portion that contacts the lower surface of the sleeper and engaging with the base plate and a part of the tightening means to fix them to the sleeper.
It is configured to be provided with.

According to the protective cover of the position orientation ground element configured as described above, the position orientation ground element fixed to the sleepers is attached so as to be covered with the cover case, so that the position orientation ground element is installed during the trackbed maintenance work. It is possible to prevent the risk of damaging or peeling off the sleeper. Moreover, since the cover case is made of a non-magnetic material, even if the ground element is covered with the cover case, communication can be performed with the on-board element.

Here, preferably, the tightening means is composed of a pair of metal bands arranged along the width direction of the sleepers while being in contact with the upper surface of the cover case, and is formed on the inner inner edge portion of the center of the bands. Make sure that an arc-shaped notch is formed.
According to this configuration, since the covering means for tightening the cover case is a metal band, the cover case can be firmly attached to the sleepers, and an arc-shaped notch is provided inside the center of the band. Therefore, by positioning the band closer to the center while avoiding the communication between the ground element and the on-board child being obstructed by the metal band which is a magnetic material, the ground element is placed near the edge of the sleeper. Even if it is fixed, the cover case can be securely attached to the sleepers while covering the ground element.

Further, preferably, a pair of grooves having a width corresponding to the width of the band are formed on the upper surface of the cover case along the width direction of the sleepers.
According to such a configuration, by tightening the band with the tightening band engaged with the groove on the upper surface of the cover case, the cover case is prevented from laterally displaced and the cover case is surely prevented from falling off from the sleepers. be able to.

Further, preferably, the mounting jig includes a plurality of bolts having the locking portion at the lower end and a male screw portion formed at the upper end, and a plurality of nuts screwable to the male screw portion. Prepare,
At the edge of the base plate and both ends of the band, a long hole is formed so that the male screw portion of the bolt can penetrate and is long in the width direction of the sleeper.

According to the above configuration, long holes through which the male screw portion of the bolt can be penetrated are formed at the edge of the base plate and both ends of the band, so that the distance between the bolts can be widened or brought closer to each other. This makes it possible to firmly attach the protective cover to sleepers having different widths, and to efficiently carry out the work of attaching the cover plate to the sleepers.

Further, preferably, four projecting pieces projecting outward of the sleeper are formed on the side edge portion of the base plate, and each of the projecting pieces has the elongated hole through which the male screw portion of the bolt can penetrate. Make sure it is formed.
According to such a configuration, it is possible to reduce the weight of the base plate, reduce the interference with the tools of the maintenance vehicle, prevent the protective cover from coming off, and prevent the crushed stone from being caught.

According to the present invention, there is no risk of damaging or peeling off the position-locating ground element during roadbed maintenance work by a maintenance vehicle. Protective cover can be realized. In addition, there is an effect that it is possible to realize a cover that can temporarily stop the communication function of the positioning ground element when switching railway equipment or recovering a defect that has occurred in the railway system. ..

It is a perspective view which shows one Embodiment of the protection cover of the non-power-source type position-pointing ground element which concerns on this invention. It is a top view which shows the detail of the base plate which comprises the ground element protection cover of embodiment. The details of the cover case constituting the ground element protective cover of the embodiment are shown, (A) is a plan view, and (B) is a cross-sectional side view. The details of the tightening band constituting the ground element protective cover of the embodiment are shown, (A) is a plan view, and (B) is a front view. It is a front view which shows the state which attached the ground element protection cover of embodiment to a sleeper. It is a perspective view which shows the example of the base plate examined prior to the development of the ground element protective cover of embodiment. It is a perspective view which shows the example of the shielding plate in the modification of the ground element protection cover of embodiment.

Hereinafter, the protective cover for the non-powered position-oriented ground element according to the present invention will be described in detail with reference to the drawings.
FIG. 1 is a perspective view showing an embodiment of a protective cover (hereinafter, referred to as a ground element cover) for a non-powered position-oriented ground element according to the present invention. In the following examples, the length direction of the sleepers is regarded as the front-rear direction, and the width direction of the sleepers is regarded as the left-right direction (lateral direction).

As shown in FIG. 1, the ground element cover 10 of the present embodiment includes a metal base plate 11 having a total of four projecting pieces 11A to 11D, two of which are formed so as to project to the left and right sides. A cover case 12 mounted on the base plate 11, and mounting jigs 13A to 13D having a locking portion whose upper end penetrates the projecting pieces 11A to 11D and protrudes upward and abuts on the lower surface of the sleeper at the lower end. Both ends are coupled to the projecting pieces 11A to 11D of the base plate 11, and the cover case 12 is composed of two tightening bands 14A and 14B that firmly hold the cover case 12.

As shown in FIG. 2, the base plate 11 has a rectangular opening 11E slightly smaller than the cover case 12 formed in the center, and hooks forming the mounting jig 13 on the protruding pieces 11A to 11D. Long holes 11a to 11d through which the male screw portion 31a (see FIG. 5) is inserted in the upper part of the shaped bolt 31 are formed, respectively, and the opening 11E has a size one size larger than the outer shape of the ground element to be protected. Designed to have.

FIG. 3 shows the details of the cover case. The cover case 12 in this embodiment is made of a non-magnetic material and is formed in a box shape without a bottom wall, and the opening of the base plate 11 is covered from above with the opened bottom wall facing down. It is placed on the edge of 11E. The cover case 12 is made of a non-magnetic material so that when the ground element is covered from above, it can communicate with the internal ground element from the outside in a non-contact manner. As the non-magnetic material constituting the cover case 12, for example, a synthetic rubber such as chloroprene rubber or a synthetic resin such as polycarbonate can be considered.

In addition to the above two materials, the present inventors prepared a cover case 12 using some materials such as urethane rubber and acrylonitrile-butadiene styrene, and conducted a continuous friction test for several minutes with a sweeper of a ballast regulator. As a result, it was confirmed that chloroprene rubber and polycarbonate have sufficient durability and can be used. Of these, chloroprene rubber is preferable from the viewpoint of cost.

As shown in FIG. 3, two shallow grooves 12A and 12B are formed on the surface of the cover case 12. The widths of the grooves 12A and 12B are set to be the same as the widths of the tightening bands 14A and 14B, and when the tightening bands 14A and 14B are brought into close contact with the surface of the cover case 12 and tightened, the tightening bands 14A and 14B are used. Is engaged with the grooves 12A and 12B so that the cover case 12 can be fixed in a positioned state so as not to move back and forth. Further, the grooves 12A and 12B are formed at positions slightly inward rather than at both ends of the cover case 12. By forming the grooves 12A and 12B inward in this way, the band does not protrude even when the ground element is fixed at a position close to the end of the sleeper, and the tightening bands 14A and 14B can be used for tightening. You can do it surely.

As shown in FIG. 4, the tightening band 14A (14B) is formed by bending a thin strip-shaped metal plate, and elongated holes 14a and 14b are formed at both ends thereof, and the upper surface of the cover case 12 is formed. An arc-shaped notch 14c is provided at a portion corresponding to the center of the above. The notch 14c is provided because the coil as an antenna built in the ground element (data depot: registered trademark) has a circular shape, and the band-shaped tightening bands 14A and 14B made of magnetic material overlap with the coil. This is to avoid interfering with electromagnetic induction communication between the on-board element and the ground element provided on the train side.

As shown in FIG. 5, the mounting jig 13A (same for 13B to 13D) is a straight bolt 31 having a male screw portion formed at the upper end and a pair of bolts 31 screwed into the male screw portion 31a of the bolt 31. It is composed of tightening nuts 32a and 32b, washers 33a and 33b, and an L-shaped locking piece 34 fixed to the lower end of the bolt 31 by welding or the like. Then, as shown in FIG. 5, the male screw portion 31a of the bolt 31 is attached to the protruding pieces 11A to 11D provided on the base plate 11 in a state where the locking piece 34 at the lower end of the bolt 31 is joined to the lower surface of the sleeper 20. Tighten by inserting through the elongated holes 11a to 11d, further inserting through the elongated holes 14a and 14b of the tightening bands 14A and 14B, screwing the tightening nut 32a, and turning the nuts 32a and 32b using a tool to tighten. The cover case 12 can be firmly fixed on the sleepers together with the bands 14A and 14B.

As described above, in the ground element cover of the present embodiment, the elongated holes 11a to 11d and 14a and 14b are formed in the projecting pieces 11A to 11D of the base plate 11 and the tightening bands 14A and 14B, respectively, so that the ground surface to be protected is desired to be protected. Even if the sleepers to which the child is attached are sleepers with different widths such as wooden sleepers and PC sleepers, by adjusting the distance between the opposing bolts, the cover case 12 can be firmly attached to the side of the sleepers. Can be fixed. Since the cover case 12 is made of a non-magnetic material, it is possible to communicate with the ground element (data depot: registered trademark) even when the cover case 12 covers the ground element and read the stored information. it can.
It should be noted that the size of the base plate 11 and the length of the bolt 31 may be different between those for wooden sleepers and those for PC sleepers.

Further, instead of providing the projecting pieces 11A to 11D on the base plate 11, as shown in FIG. 6, it is conceivable to provide a flange portion and form an elongated hole 11F in the flange portion for weight reduction. However, if such a flange portion is provided, the tool may interfere with the flange portion and the cover case may come off during track maintenance work using a multiple tie tamper or the like, and the flange portion may come off. Crushed stones may remain in the long hole 11F with crushed stones sandwiched between them, and the crushed stones may come off and be blown off when the commercial train is running, damaging the vehicle and equipment near the track. There is an advantage that there is no risk of trouble occurring.

Further, in the ground cover of the above embodiment, since the cover case 12 is fixed on the sleepers by the tightening bands 14A and 14B formed separately from the cover case 12, the cover case 12 is made of a magnetic material. By exchanging with the cover, the communication function of the ground element can be temporarily stopped. Therefore, there is an advantage that the communication function of the ground element can be easily stopped when the system is updated or when the ground element whose performance has deteriorated is replaced with a new ground element.

When temporarily stopping the communication function of the ground element, instead of replacing the cover case 12 with one made of a magnetic material, the cover case 12 made of the original non-magnetic material and the tightening bands 14A and 14B A plate-shaped shielding plate 15 made of a magnetic material, for example, as shown in FIG. 7, may be interposed between the two, or guide ribs having slide grooves are formed on both sides of the upper surface of the cover case 12. It may be configured so that the shielding plate 15 can be attached later.

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 modifications can be made. For example, in the above embodiment, the metal base plate 11 is directly in contact with the upper surface of the sleepers, but a pad or sheet made of an elastic material is interposed between the lower surface of the base plate 11 and the upper surface of the sleepers. Is also good.
Further, in the above embodiment, the L-shaped locking piece 34 is fixed to the lower end of the bolt 31 as the mounting jigs 13A to 13D, but a hook bolt in which the lower end of the bolt 31 is bent at a right angle is used. You may try to do it.

Further, in the above embodiment, the case where the present invention is applied to the cover of the non-power supply type position orientation ground element has been described, but the present invention is not limited to the non-power supply type position orientation cover, and the ATS (automatic train stop) system is used. If the constituent ground elements are miniaturized and installed on the sleepers, if a sensor that detects the vibration or tilt of the sleepers is provided as a cover for such ground elements. It can also be used as a cover for such a sensor.

10 Protective cover 11 Base plate 11A to 11D Projecting piece 11E Opening 12 Cover case (support member)
13A to 13D Mounting jig 14A, 14B Tightening band (tightening means)
15 Shielding plate

Claims (5)

A base plate with an opening larger than the outer shape of the ground element mounted on the sleepers formed in the center and placed on the upper surface of the sleepers,
A box-shaped cover case formed of a non-magnetic material and having an opening at the bottom wall, which is placed on the upper surface of the base plate so that the opening corresponds to the opening.
A tightening means for pressing the cover case from above to prevent movement, and
A mounting jig having a locking portion that contacts the lower surface of the sleeper and engaging with the base plate and a part of the tightening means to fix them to the sleeper.
A protective cover for a non-powered position orientation ground element, which is characterized by being equipped with. The tightening means is composed of a pair of metal bands arranged along the width direction of the sleepers while being in contact with the upper surface of the cover case, and an arc-shaped notch is provided at the central inner edge of the bands. The protective cover for a non-powered position-locating ground element according to claim 1, wherein the cover is formed. The non-powered position-oriented ground according to claim 2, wherein a pair of grooves having a width corresponding to the width of the band are formed on the upper surface of the cover case along the width direction of the sleepers. Protective cover for the child. The mounting jig includes a plurality of bolts having the locking portion at the lower end and a male screw portion formed at the upper end, and a plurality of nuts that can be screwed into the male screw portion.
3. The third aspect of the present invention is characterized in that, at the edge of the base plate and both ends of the band, a long hole is formed so that the male screw portion of the bolt can penetrate and is long in the width direction of the sleeper. Protective cover for the described non-powered position orientation ground element. Four projecting pieces projecting outward of the sleepers are formed on the side edges of the base plate, and the elongated holes through which the male screw portion of the bolt can penetrate are formed in the projecting pieces. The protective cover for the non-powered position-oriented ground element according to claim 4.

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