JP4768347B2 - Cable cover, ATS grounding fixture, and ATS grounding mounting method - Google Patents

Description

  The present invention relates to a technique for attaching an automatic train stop device (Automatic Train Stop: referred to as “ATS” in the present specification) to an existing sleeper. It is an object of the present invention to provide a means capable of reliably protecting the ATS ground element and the cable against the roadbed tamping work (abbreviated as “Maltai”).

  ATS is a device for automatically braking the train to decelerate or stop when the train exceeds the speed limit or the command speed of the traffic light, or when it tries to proceed beyond the signal stop indication. In general, a ground unit installed on the track that transmits a control signal to the train, and a vehicle that is installed in the train and issues a warning to the driver or operates the brake on the train based on the control signal from the ground unit It consists of a combination with the upper child. The ATS train control system that is mainly used at present is roughly divided into the S type (frequency shift type) that detects the frequency of the ground element with a frequency variable transmitter on the vehicle, and a transponder. There is a P type (pattern type) that controls the train by comparing the speed irradiation pattern generated on the vehicle based on the distance information digitally transmitted from the ground unit and the train speed.

  FIG. 9 shows how the S-shaped ATS ground element T is attached. In the case of the S-type ATS, the ground element T is disposed between the rails R and R closer to one rail R side than the center of the sleeper M1. On the other hand, the ground element of the P-type ATS is arranged almost at the center of the sleeper. In the sleeper M1 to which the ground piece T is attached, a groove or a notch is formed on the upper surface as described in Patent Document 1 (see FIGS. 1, 2 and 5), and the upper surface as shown in FIG. A dedicated sleeper in which an insert 7 that is a nut member is embedded at a predetermined position is used. The groove or notch is necessary for arranging a cable connected to the ground element T, and the insert 7 is a bolt for fixing the base 1 and the cable cover 3 supporting the ground element T to the upper surface of the sleeper M1. Is necessary to screw in. In general, a PC sleeper is used, but a wooden sleeper may be used.

  In order to attach the ATS ground element T to the sleeper M1 in which the notch L is formed along the side edge of the upper surface as shown in FIG. 10, for example, the insert 7 embedded in the sleeper M1 as shown in FIG. The pedestal 1 is fixed to the upper surface of the sleeper M1 by screwing the bolt 6 into the base 1, and the ground element T is attached to the pedestal 1 with the bolt 5 via the spacer 4. Further, the side cover 2 having an L-shaped cross section is attached to one side portion of the base 1 by using the bolt 5. The side cover 2 forms a passage for the cable K connected to the ground child T by covering the cutout L of the sleeper M1 with a hanging portion 2a formed in the vertical direction.

The cable K is pulled out along the notch L of the sleeper M1, but in order to hold the cable K in the notch L, the cable cover 3 having a U-shaped cross section is also provided near the end of the sleeper M1. Is attached. As shown in FIG. 11B, the cable cover 3 is similarly fixed to the upper surface of the sleeper M1 by screwing the bolt 6 into the insert 7, and the notch L is covered by the vertical hanging portion 3a, thereby A passage is formed. Since the portion where the cable K is exposed from the pedestal 1 normal protective pipe K1 is Ru is mounted, the cable cover 3 is substantially is to hold the protective tube K1.

By the way, when viewed in the rail direction, the width dimension of the ATS ground element T is set to be smaller than the width dimension of the sleeper M1. Further, the side cover 2 and the cable cover 3 of the pedestal 1 are both configured to fit within the width dimension of the sleeper M1, that is, to have no portion protruding from the side surface of the sleeper M1 in plan view. This is because when the ground piece T or the cable K has a portion located outside the sleeper M1, the tamping tool comes into contact with the ground piece T or the cable K during the tamping work of the ballast ballast by the Maltai. This is because they may be damaged.
JP-A-9-78501

  As described above, conventionally, installation of the ATS ground unit requires a dedicated sleeper M1 (see FIG. 10) having a notch L (or groove) on the upper surface and having the insert 7 embedded therein. Therefore, when a new ATS ground element is installed in the track, the existing sleeper must be replaced with the dedicated sleeper M1. However, the weight per sleeper is about 200 to 300 kg in the case of a PC sleeper, and in the sleeper M1 with a notch, the length of the bearing surface of the rail is almost equal to that of a normal sleeper. Therefore, the width dimension is made larger than the usual sleeper by the notch L. In addition, for the sleeper replacement work, removal of ballast, separation of the rail and sleeper, lifting of the rail, fastening with the rail after replacement of the sleeper, correction of the track, backfilling and tamping of the ballast, etc. Since a large number of processes are required, a great deal of labor and time are required.

The inventors of the present invention have devised a cable cover, a ground piece attachment , and a ground piece attachment method as means for solving the above-described conventional problems when newly installing or adding an ATS. The cable cover according to the present invention is characterized in that, as described in claim 1, the cable cover is for holding the cable along the side surface of the sleeper, and is attached to the upper surface of the sleeper; A side protector provided continuously from the side edge of the mounting base, and when viewed in the rail direction, the width of the mounting base is set to be greater than the width of the sleeper, and the side protector The inclination angle is substantially equal to the inclination of the tamping tool during the tamping work of the multiple tie tamper, and the bottom edge of the sleeper or the vicinity of the bottom edge is positioned on the extension line on the lower end side. And a gap having a dimension capable of inserting a cable or a cable protection tube is formed between the lower end portion of the side surface protection portion and the side surface of the sleeper.

  Further, in the cable cover, it is preferable that the inclination angle of the side surface protection portion is specifically set in a range of 5 to 15 degrees with respect to the vertical direction.

On the other hand, the ATS grounding fixture according to the present invention is characterized in that , as described in claim 3, the base for attaching the ATS grounding to the sleeper and the cable cover according to claim 1 or 2 The base is fixed to a sleeper and supports the ground element on the sleeper; and a side edge of the sleeper provided on a side edge of the base. A side cover part that forms a gap into which a cable connected to the ground unit can be inserted, and the side cover part has an inclination of 20 degrees or less with respect to the vertical direction, and the pedestal The width dimension is set to be larger than the width dimension of the ground element and smaller than the width dimension of the cable cover when viewed in the rail direction.

Furthermore, the feature of the method for attaching the ATS ground element according to the present invention to the sleeper is that, as described in claim 4, the ATS ground element is attached to the sleeper using the fixture according to claim 3. A bolt or insert insertion hole is drilled at a predetermined position of a sleeper, and the bolt or insert is embedded and fixed in the hole, and then screwed with a nut screwed into the bolt or to the insert. The cable cover according to claim 1 or 2 and the pedestal according to claim 3 are fixed to the sleeper with the combined bolts, an ATS ground element is attached to the pedestal, and the cable connected to the ground element is connected to the pedestal. It is inserted and held between the side cover and the sleeper side and between the side protection part of the cable cover and the sleeper side.

  When performing a roadbed tamping operation, a tamping tamping tool is stabbed in front and rear in the rail direction of the sleeper, and is operated so that the bottom part of the sleeper is sandwiched between the tips. In the cable cover according to the present invention, in order to secure a space for holding the cable or the cable protection tube between the sleeper and the sleeper, the width of the mounting base when viewed in the rail direction is larger than the width of the sleeper. At the same time, the inclination angle of the side protection part is set to be substantially equal to the inclination of the tamping tool during the mulching of the floor (specifically, a range of 5 to 15 degrees with respect to the vertical direction), and the lower end side Is set so that the bottom edge of the sleeper or the vicinity of the bottom edge is positioned on the extension line of the sleeper, so that when the tamping tool is pierced back and forth in the rail direction of the sleeper and when the tamping tool is pulled out from the roadbed after tamping, It is possible to avoid the side protection part from interfering with the operation path. As a result, not only can the cable be prevented from being damaged due to contact with the tamping tool, but the tamping tool will not be caught on the side protection part of the cable cover and the cable cover will not be deformed or damaged. Smooth progress of the tamping work by Multai is guaranteed. Furthermore, since the gap of the dimension which can insert a cable or a cable protection tube is formed between the lower end part of a side surface protection part, and the side surface of a sleeper, a cable or a cable protection tube can be inserted and hold | maintained reliably.

  According to the cable cover according to the present invention, it is possible to attach the cable to the existing sleeper in a state in which the road bed tamping work by the conventional mulch can be executed based on the function described above. Therefore, the cable cover of the present invention can be used to hold the cable connected to the ground element in the sleeper when the ATS ground element is attached to the sleeper. Further, when the cable is disposed so as to cross the track, the cable can be disposed along the sleeper. Conventionally, a structure in which a trough is embedded between sleepers and a cable is accommodated in the sleeper is adopted, and there is a case where the roadbed tamping operation cannot be performed depending on the position of the trough. On the other hand, according to the present invention, not only the trough is not necessary, but also the sleeper provided with the cable can be squeezed by the martai, so there is a risk of poor maintenance of the roadbed. Absent.

The pedestal constituting the ATS grounding fixture according to the present invention together with the cable cover has a side cover portion for protecting the cable having an inclination of 20 degrees or less with respect to the vertical direction. , Multai's tamping tool is not easily caught on the side cover. In addition, the width when viewed in the rail direction is set larger than the width of the ground element and smaller than the width of the cable cover. Since the distance between the tools is defined by the cable cover, there is no possibility that the tamping tool contacts a pedestal having a width smaller than that of the cable cover. Therefore, it is possible to completely eliminate the possibility that the tamping tool comes into contact with the ground element having a narrower width than the pedestal.

  According to the mounting method of the ATS ground unit according to the present invention, a hole or a insert is embedded in the sleeper, and the above-described cable cover and pedestal are fixed using this, and the ATS ground unit and the cable are mounted. To do. Therefore, since the ground piece or the cable can be attached to the sleeper in a state where the contact with the tamping tool can be surely prevented, the conventional road tamping work by the mulch can be executed. In other words, since the ground child can be installed using the existing sleeper, it is not necessary to replace the sleeper with a dedicated product as in the conventional case, and the cost and labor and time required for the work are significantly reduced. Significant reductions are realized. As a result, when a large number of ATS ground elements are newly arranged on the existing line, it is possible to easily and quickly cope with it.

FIG. 1 shows a situation where an ATS ground unit T (hereinafter simply referred to as a ground unit T) is installed on an existing sleeper M using a fixture U comprising a base 10 and a cable cover 20 according to the present invention. It is. In this example, it is assumed that the sleeper M is a PC sleeper, but it can also be applied to a wooden sleeper. The ground element T is installed by the base 10 between the two rails R, R fastened to the sleeper M by a fastening spring Q or the like. When the ATS is S-shaped, the ground unit T is arranged close to one rail R as shown in the figure. The cable K connected to the ground piece T is usually covered with a protective tube K1, and is pulled out of the track along the side surface of the sleeper M, and is held on the side surface of the sleeper M by the cable cover 20. .

  As shown in FIGS. 2 and 3, the pedestal 10 that supports the ground piece T on the sleeper M includes a base portion 11 and a side cover portion 12. A bolt 30 embedded in the sleeper M is inserted into an opening 13 formed at a proper position of the base part 11, and a nut 31 is screwed into this to tighten the base part 11 so that the upper surface of the sleeper M is fixed. Fixed to. In addition, when the upper surface of the sleeper M is not flat and has an inclined surface at the attachment location of the base part 11, the flat part 11a and the inclined part 11b are provided on the bottom surface of the base part 11 in accordance with the shape. It is desirable to form. Moreover, you may arrange | position the spacer 17 (refer FIG.3 (B)) between the inclination part 11b and the sleeper M upper surface as needed. Ribs 11c and 11c are erected on each of the opposing edge portions along the longitudinal direction (longitudinal direction of the sleeper M) in the base portion 11, and on one side of the upper end portion of each rib 11c and 11c, The support parts 11d and 11d formed in the horizontal direction are continuously provided. On the other hand, boss portions 11e and 11e are provided on the upper surface of the inclined portion 11b in the vicinity of the edge. The upper end surface of the boss portion 11e is formed so as to be substantially parallel to the flat portion 11a. An insert 14 having an internal thread for screwing the mounting bolt 16 of the side cover portion 12 is embedded in the support portion 11d and the boss portion 11e.

  The side cover portion 12 includes a horizontal portion 12a and a guard portion 12b that is continuously connected to the edge of the horizontal portion 12a. The side cover portion 12 is attached to the base portion 11 by a bolt 16 that attaches the ground element T to the base 10. . That is, the bolt 16 into which the through hole provided in the ground element T and the spacer 18 disposed on the lower surface side of the ground element T are inserted is inserted into the opening 15 formed in a predetermined position of the horizontal portion 12a, and the base The support part 11d of the part 11 and the insert 14 of the boss part 11e are screwed together and tightened. Thereby, the side cover part 12 is fixed to the base part 11 of the base 10 together with the ground element T. In order to surely prevent the tamping tool from coming into contact with the ground piece T during the work of tamping the roadbed by the mulch, it is desirable to arrange the side cover portions 12 symmetrically on both sides of the sleeper.

  FIG. 4 (A) (corresponding to the cross section along line aa in FIG. 1 (A)) shows a state where the ground element T is supported by the pedestal 10 fixed to the upper surface of the sleeper M as described above. It is. The height position of the ground element T is determined according to the state of the track and can be adjusted by the thickness of the spacer 18. Between the side cover portion 12 of the pedestal 10 and the side surface of the sleeper M, a space 10s that can accommodate the cable K connected to the ground piece T or the protective tube K1 attached to the cable K is formed. In order to avoid contact with the tamping tool, it is desirable to give the side cover portion 12 a slight inclination angle β. Specifically, β is 20 degrees or less (preferably in the range of 2 to 15 degrees) with respect to the vertical direction. Further, a gap is formed between the tip of the side cover portion 12 and the side surface of the sleeper M, but the dimension is such that the cable K or the protective tube K1 can be inserted.

  The cable cover 20 that holds the cable K (or cable protection tube K1) connected to the ground piece T on the side surface of the sleeper M corresponds to a cross section taken along line bb in FIG. 4B (FIG. 1A). ), A mounting base portion 20a fixed to the upper surface of the sleeper M, and a side surface protection portion 20b continuously provided so as to be bent downward from a side edge of the mounting base portion 20a via a curved surface. This curvature radius is appropriate, for example, 15 mm is adopted. The means for fixing the mounting base portion 20a to the sleeper M is the same as the means for fixing the base portion 11 of the base 10 to the sleeper M described above. In other words, the bolt 30 embedded in the sleeper M may be inserted into an opening provided at a predetermined position of the mounting base 20a, and the nut 31 may be screwed into the bolt 30 and tightened.

  The side surface protection portion 20b is given a predetermined inclination angle α with respect to the vertical direction. This inclination angle α is set so as to be substantially equal to the inclination of the tamping tool at the time of the tamping work of the multai. The angle of the tamping tool at the time of the road tamping work by standard mulching is considered to be about 10 ± 5 degrees. Therefore, it is preferable to set the inclination angle α of the side surface protection portion 20b in the range of 5 to 15 degrees. Specifically, when the inclination angle of the tamping tool is 11 degrees, it is optimal to set α = 9 degrees in consideration of the finishing tolerance of the sleeper.

  The side surface protection portion 20b is set so that the bottom edge Y of the sleeper M or the vicinity of the bottom edge Y is positioned on an extended line extending toward the lower end along the inclination. This makes it possible to avoid the side surface protection unit 20b from interfering with the operation path of the tamping tool when the tamping tool is pierced into the roadbed and pulled out from the roadbed. In other words, the tamping tool is not caught on the cable cover 20 during the tamping work by Multai. A space 20s that can store the cable K or the cable protection tube K1 is formed between the side surface protection portion 20b and the side surface of the sleeper M, and is formed between the lower end portion of the side surface protection portion 20b and the side surface of the sleeper M. The gap dimension is set to a value (for example, 16 mm) at which the cable K or the cable protection tube K1 can be inserted.

  By the way, the following conditions are given between the base 10 and the cable cover 20 according to the present invention with respect to the width dimension when viewed in the rail direction. As shown in FIGS. 4A and 4B, when the width dimension of the ground element T is W1, the width dimension of the base 10 is W2, and the width dimension of the cable cover 20 is W3, W1 <W2 <W3. Set to This condition setting is for reliably preventing the tamping tool from coming into contact with the ground element T during the road bed tamping operation by the mulch. As shown in FIG. 5 (A), it is a standard multi-tie configuration that four tamping tools 50 are arranged for each rail R with the rail R sandwiched between the front and rear of the sleeper M. As shown in FIG. 5B, the road bed is tamped by inserting a tamping tool 50 into the road bed D before and after the sleeper M and sandwiching the sleeper M at the tip of the tamping tool 50, and then applying vibration to ballast the ballast. Is pushed below the sleeper M. In the present invention, since the width dimension of the cable cover 20 is the maximum, the interval between the tamping tools 50 does not become narrower than the width dimension of the cable cover 20 when the above-described sandwiching operation of the tamping tool 50 is performed. Therefore, there is no possibility that the tamping tool 50 contacts the pedestal 10 whose width dimension is set smaller than that of the cable cover 20, and there is no possibility that the tamping tool 50 contacts the ground element T having a smaller width dimension than the pedestal 10.

  The manufacturing material of the pedestal 10 and the cable cover 20 has a possibility of coming into contact with a mulching tamping tool, and is therefore made of a relatively strong material. For example, a steel plate or stainless steel plate having a thickness of about 6 mm is used.

  In order to fix the base 10 and the cable cover 20 for mounting the ground element and the cable to the existing sleeper M, a hole or the like is drilled at a predetermined position of the sleeper M with a drill or the like, and a bolt or an insert is inserted into the hole. Embed. At this time, in the case of the PC sleeper, the hole must be drilled avoiding the position of the PC steel wire disposed inside. In doing so, it is the position and depth of the holes that need to be considered. Therefore, in this example, large and small drill gauges 60 and 70 as shown in FIG. The larger drill gauge 60 is for drilling holes in the part between the rails of the sleeper M, and includes a main part 62 placed at the center of the sleeper M and a short side of the main part 62. Are formed by a side portion 63 provided at both end edges corresponding to each other, an inclined portion 64 continuously provided on one side portion 63, and a wing portion 65 extending to the inclined portion 64. A semicircular cutout 66 is formed, and both side edges corresponding to the long sides of the main portion 62 have flange portions 67 formed by bending downward. As shown in FIG. 6B, the flange portion 67 has a tapered shape that slightly expands downward so that it can be easily fitted to the upper part of the sleeper M.

  The main portion 62 and the side portion 63 have a shape that follows the shape of the upper surface of the sleeper M, and the flange portion 67 is set to a size that fits the upper portion of the sleeper M. Accordingly, the drill gauge 60 is positioned at a predetermined position only by being placed on the upper surface of the sleeper M, as shown in FIG. Moreover, as shown in FIGS. 5B and 5C, the inclined portion 64 and the wing portion 65 are configured so that the notch portion 66 of the wing portion 65 wraps around the rail R when the drill gauge 60 is in the predetermined position. It is configured to be fitted to the head of the fixing bolt 40 of the fastening spring Q to be fastened to the groove M. Therefore, by fitting the notch 66 to the head of the bolt 40, the drill gauge 60 can be positioned more accurately and easily.

  On the other hand, the smaller drill gauge 70 is for drilling a hole in the part of the sleeper M outside the rail R, and is provided at the main portion 72 and the opposite edges of the main portion 72. It consists of a flange portion 73 and a drooping portion 74 provided on the other end edge. The flange portion 73 and the hanging portion 74 are configured so that the drill gauge 70 is positioned only by being placed on the end portion of the sleeper M.

  The drill gauges 60 and 70 are provided with openings at predetermined positions, and guide pipes 61 and 71 having predetermined lengths communicating with the openings are provided upright. The length of the guide pipes 61 and 71 defines the depth of the hole when drilling. For example, when using a drill with a diameter of 6 mm (total length 100 mm, effective length 65 mm), the length of the guide pipes 61 and 71 may be set to 20 mm. In addition, the said numerical value can be suitably changed according to the specification of the drill to be used.

  The material of the drill gauges 60 and 70 is not particularly limited, but in addition to metals such as iron (JIS SS400), stainless steel, aluminum, etc., it may be made of plastic to reduce the weight. However, the guide pipes 61 and 71 are preferably made of metal because they need strength.

  The drilling procedure for sleeper M is as follows. As shown in FIG. 7A, for example, when a hand drill H is used, after the drill gauges 60 and 70 are placed at predetermined positions on the sleeper M, the drill blade of the hand drill H is placed in the guide pipes 61 and 71. Insert and drill. By drilling until the body of the hand drill H hits the guide pipes 61 and 71, the depth of the hole can be made constant. Further, if a hole is drilled in the sleeper M, a pin 80 as shown in FIG. 7 (D) is inserted into the hole through the guide pipes 61 and 71, thereby preventing the displacement of the drill gauges 60 and 70. It becomes possible to do.

  Bolts or inserts are buried in the holes thus drilled. For embedding bolts or inserts, it is conceivable to use a synthetic resin material such as a chemical anchor. Or, ceramic materials such as cement adhesives can be used as the fixing means. When the bolt is embedded, the pedestal 10 or the cable cover 20 can be fixed by inserting the bolt into the pedestal 10 or the cable cover 20 from the bottom surface side, projecting it to the upper surface side, and screwing and tightening the nut. it can. When the inserts are embedded, the bolts can be fixed by inserting the bolts from the upper surface side of the base 10 or the cable cover 20 and projecting the bolts toward the bottom surface side, and screwing and tightening the tip ends of the bolts to the inserts.

In FIG. 1A, the cable K connected to the ground element T may be pulled out to the far rail R side depending on the construction situation. In this case, it is desirable to arrange a cable cover 21 for holding the cable K (or the protective tube K1) between the ground element T and the rail R. The cable cover 21 may be the same as or different from the cable cover 20 disposed on the end side of the sleeper M.

  As shown in FIG. 8A, since the ground element Tp of the P-type ATS is disposed at the center between the rails R and R, in principle, it is not necessary to consider the interference with the mulching tamping tool. . Therefore, a conventional product can be used as a base for supporting the P-type ATS ground element Tp on the sleeper M.

As shown in FIG. 8B, the cable covers 20 and 21 according to the present invention are arranged along the side surface of the sleeper M when the cables are arranged so as to cross the track. Can be used to hold. With such a configuration, the trough conventionally used for arranging the track crossing cable is not necessary, and it is possible to carry out the roadbed tamping work by the mulch as usual.

FIG. 1A is a plan view showing a state in which an ATS ground unit is attached to a sleeper, and FIG. 1B is a side view of the same state. 1 is a perspective view showing an ATS ground element base according to an embodiment of the present invention. FIG. 1A is a plan view showing a state where an ATS ground element is attached to a pedestal, and FIG. 1B is a side view taken along line XX of FIG. FIG. FIG. 1A relates to an embodiment of the present invention, and FIG. 1A is a cross-sectional view taken along line aa in FIG. 1A showing a state in which an ATS ground element is attached to a sleeper, and FIG. It is sectional drawing in the bb line | wire of FIG. FIG. 1A is a plan view showing a positional relationship between a tamping tool and a sleeper during a tamping work by Multai, and FIG. It is sectional drawing in the -Y line. FIG. 1A is a perspective view showing a sleeper and a drill gauge used when a bolt insertion hole is drilled, and a drill at the ZZ line in FIG. It is sectional drawing of a gauge. FIG. 1A is a side view showing a procedure for placing a drill gauge on a sleeper and drilling a bolt insertion hole in the sleeper, and FIG. FIG. 4C is an enlarged side view showing the vicinity of the wing part of the drill gauge, and FIG. 4D is an enlarged cross-sectional view of the main part showing a temporary fixing state of the drill gauge. It is. FIG. 4A is a plan view showing a state in which a P-type ATS ground element is attached to a sleeper, and FIG. 4B is a diagram showing only a cable or a signal line attached to the sleeper. It is a top view which shows the state which carried out. It is a perspective view which shows the attachment condition of the conventional ATS ground unit. The conventional ATS ground element attachment procedure is shown, wherein FIG. (A) is an exploded perspective view of the ground element and the pedestal, and FIG. (B) is a perspective view showing a state in which the ground element is attached to the sleeper by the pedestal. FIG. FIG. 2A shows a conventional ATS grounding attachment state, where FIG. 1A is a half sectional view of a pedestal portion viewed from the end face side of the sleeper, and FIG. 2B is a view of the cable cover portion viewed from the end face side of the sleeper. FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 ... Base 11 ... Base part 12 ... Side cover part 20 ... Cable cover 20a ... Mounting base part 20b ... Side protection part M ... Sleeper K ... Cable K1 ... Cable protection pipe R ... Rail T ... Ground element

Claims (4)

  A cable cover for holding the cable along the side surface of the sleeper, comprising a mounting base fixed to the upper surface of the sleeper, and a side protection part continuously provided downward from the side edge of the mounting base, When viewed in the rail direction, the width dimension of the mounting base is set to be larger than the width dimension of the sleeper, and the side surface protection section has an inclination angle of the tamping tool during the tamping work of the multiple tie tamper. And is set so that the bottom edge of the sleeper or the vicinity of the bottom edge is located on the extension line on the lower end side, between the lower end of the side protection part and the side of the sleeper. A cable cover characterized in that a gap having a dimension capable of inserting a cable or a cable protection tube is formed.   The cable cover according to claim 1, wherein an inclination angle of the side surface protection portion is in a range of 5 to 15 degrees with respect to a vertical direction. A mounting tool comprising a pedestal for attaching an ATS ground child to a sleeper and the cable cover according to claim 1 or 2 , wherein the pedestal is fixed to the sleeper and the ground child is placed on the sleeper. And a side cover part that forms a gap in which a cable connected to the ground element can be inserted between the base part and the sleeper side face provided on the side edge of the base part, The side cover portion has an inclination of 20 degrees or less with respect to the vertical direction, and the width dimension of the pedestal is larger than the width dimension of the ground element when viewed in the rail direction, and the cable cover An ATS grounding fixture characterized in that it is set smaller than the width dimension of the ATS. A method for attaching an ATS ground element to a sleeper using the fixture according to claim 3, wherein a bolt or insert insertion hole is drilled at a predetermined position of the sleeper, and the bolt or insert is inserted into the hole. The cable cover according to claim 1 and the pedestal according to claim 3 are fixed to the sleeper with a nut screwed into the bolt or with a bolt screwed into the insert. An ATS ground element was attached to the base, and the cable connected to the ground element was inserted and held between the side cover and the sleeper side of the base and between the side protection part and the sleeper side of the cable cover. A method of attaching an ATS ground unit.