JP6010432B2 - Locking management system for high-voltage equipment boxes for railway vehicles - Google Patents

Description

  The present invention relates to a locking management system for a railway vehicle high-voltage equipment box in a knitted vehicle in which vehicle units composed of a plurality of vehicles are connected.

  In general, in a high-speed railway vehicle, an equipment box (hereinafter simply referred to as “high-pressure equipment box”) in which high-voltage equipment and the like are stored is often installed under the floor of the vehicle. At the time of maintenance and inspection of such a high-voltage device, it is necessary that power is not supplied from a pantograph (current collector) that collects electric power from the overhead line from the viewpoint of ensuring safety for workers.

  As a technique for preventing an electric shock accident and facilitating installation and inspection work, for example, an air-insulated protective cylinder has been proposed (for example, Patent Document 1). This device is provided with a locking device for locking an inspection lid on a high-pressure device box, and a key for opening and closing the device is stored in a lock box in the compressed air supply device. And when the pantograph of the own vehicle is descending, the key can be taken out and the high-pressure equipment box can be unlocked.

  Further, there has been proposed an extra-high circuit protection device that prevents a pantograph from being raised even if a pantograph raising operation is performed when an operator is in the high-voltage equipment box (for example, Patent Documents 2 and 3). These special high-voltage protection devices are provided with a micro switch that detects that the inspection lid is open on the inspection lid of the high-voltage equipment box, and when the inspection lid of any high-voltage equipment box is open, the pantograph lift switch Since all pantographs that are being organized do not rise even if the is operated, the person in the high voltage equipment box will not be electrocuted.

Japanese Utility Model Publication No. 2-16931 Japanese Utility Model Publication No. 04-76530 Japanese Patent Laid-Open No. 04-58701

  By the way, with the recent increase in the speed of railway vehicles, it is required to reduce the noise of pantograph sliding noise and wind noise, and in response to this, measures may be taken to reduce the number of pantographs in knitted vehicles. In such a case, power is supplied to a plurality of vehicles by passing between the vehicles with a high voltage cable (extra high voltage cable).

  However, the device described in Patent Document 1 can take out the key when the pantograph of the own vehicle is lowered, and can take out the key even when the pantograph other than the own vehicle is raised. is there. For this reason, in the knitted vehicle through which the high-voltage cable is passed, there is a possibility that electric power from the pantograph of the other vehicle may be supplied. Therefore, it is necessary to work by separating the high-voltage cable.

  In addition, since the devices of Patent Documents 2 and 3 use a microswitch that detects that the inspection lid of the high-voltage equipment box is opened, the inspection door of any high-voltage equipment box is not open. If the inspection door of any high-voltage equipment box is opened first and an operator tries to enter the inside of the high-voltage equipment box, power from the pantograph of another vehicle may be supplied. Similarly, the high voltage cable needs to be separated.

  This point will be described in detail with reference to FIG.

  In FIG. 11, the formation vehicle is composed of, for example, 10 vehicles. When the left vehicle in the figure is the first car, the pantograph 104 is installed in the fourth car and the sixth car, and the second car, the fourth car, the sixth car, Under the floor of the No. 8 car, a high-pressure device box 101, a locking device 101b for locking the inspection lid 101a of the high-pressure device box, and a key 102 for unlocking the locking device 101b are provided in the compressed air supply device 103. And. In addition, the No. 2 car No. 4 car and the No. 5 car No. 8 car are passed through the high voltage cable 108 and are connected between the No. 4 car and the No. 5 car via the connecting portion 109, and one of the pantographs 104 is connected. Power can be supplied even when the cable is disconnected from the overhead line. Further, the knitted vehicle of FIG. 11 is provided with a protective ground circuit having a protective ground switch 105 (EGS), and when the protective ground switch 105 is turned on, the operation unit 105a operates to short-circuit the overhead wire and the rail. .

  In the key 102, (1) in the first car to the fourth car, the pantograph 104 is lowered, (2) the protective earth switch 105 is turned on, and (3) the air circuit and the protective earth circuit for raising the pantograph are turned off. When the shut-off cocks 106 and 107 that shut off the air circuit are cut off, they can be taken out. However, since the fourth car and the fifth car are connected via the connecting portion 109, the electric power from the pantograph 104 of the sixth car is also supplied to the high-voltage equipment boxes of the second car and the fourth car. Therefore, it is necessary to perform the maintenance inspection work by separating the connecting portion 109. In particular, since the connecting portion 109 is installed in the upper part of the vehicle, a great deal of work is required for separation.

  The present invention provides a locking management system that ensures safety at the time of maintenance inspection and prevents the opening of the inspection lid of the high-voltage equipment box in a state where electric power is supplied to the vehicle from an overhead line with a simple configuration. The purpose is to provide.

According to the present invention, there is provided a locking management system for a high-voltage equipment box for a railway vehicle, in a knitted vehicle in which vehicle units composed of at least two electric vehicles are connected to each other. A current collector that collects power from the power supply, a high-voltage cable that is passed through each of the vehicle units and that supplies power from the current collector, and a storage unit in which the high-voltage device to which the power is supplied is stored An inspection lid that can open and close the opening of the storage portion; and a high-pressure device box locking device that locks and unlocks the inspection lid, the high-pressure device box provided in each of the at least two vehicle units; A lock control system for a railway vehicle high-voltage equipment box, comprising: a key box provided therein corresponding to an electric device; and a key box in which a key for unlocking the high-voltage equipment box lock device is housed. A beam, the high pressure equipment box for lock device is characterized in that, to unlock the inspection lid by a key corresponding to the current collector except the key and the current collector corresponding to the current collector And

  In this way, when opening the inspection lid of the high-voltage equipment box, not only the key corresponding to one current collector, but also all the keys corresponding to the current collector other than the current collector, The lock device of the high-pressure equipment box cannot be unlocked and the inspection lid cannot be opened. Therefore, when taking out the key from each key box, it is possible to reliably confirm that power is not supplied from each current collector in the entire trained vehicle, and in a state where power from the overhead line is supplied, It is possible to prevent the inspection lid from being accidentally opened.

  According to the present invention, there is provided a locking management system that ensures safety during maintenance inspection and prevents the opening of the inspection lid of the high-voltage equipment box in a state where electric power is supplied from the overhead line to the vehicle with a simple configuration. Can be provided.

It is explanatory drawing which shows schematic structure of the locking management system of the high voltage | pressure equipment box for rail vehicles which is embodiment. It is a front view of a key box. It is sectional drawing in the AA of FIG. It is sectional drawing in the BB line of FIG. 2, and the state which open | released the cover body is shown. It is sectional drawing in the CC line of FIG. It is a perspective view of the key box of FIG. It is explanatory drawing of the unlocking state of the inspection cover of a high voltage | pressure equipment box. It is explanatory drawing of the locking state of the inspection lid | cover of a high voltage | pressure equipment box. It is an air circuit diagram. It is a flowchart which shows the operation | movement procedure in a locking management system. It is explanatory drawing which shows schematic structure of the locking management system of the conventional high voltage | pressure equipment box for rail vehicles.

  Hereinafter, embodiments will be described with reference to the drawings.

[1. Embodiment]
[1-1. overall structure]
FIG. 1 is an explanatory diagram showing a schematic configuration of a lock management system for a railway vehicle high-voltage equipment box according to an embodiment. As shown in FIG. 1, the formation vehicle is configured by connecting, for example, 10 vehicles. When the left vehicle in the drawing is the first vehicle, the first vehicle starts from Mc1 (car 1), M2 (car 2). , M1 (car 3), M2 (car 4), M1 (car 5), M2 (car 6), M1 (car 7), M2 (car 8), T (car 9), Tc (car 10) Is done. Here, Mc is a control electric vehicle having a cab and a motor, M is an intermediate electric vehicle having no cab and a motor, T is an accompanying vehicle having no cab and a motor, and Tc is an accompanying electric vehicle having a cab. It is a car.

  Further, in this embodiment, two adjacent electric vehicles are used as one vehicle unit, and the first car and the second car constitute the first vehicle unit. Similarly, the third car and the fourth car are the second vehicle unit, Car No. 6 and Car No. 6 constitute the third vehicle unit, and Car No. 7 and Car No. 8 constitute the fourth vehicle unit. That is, one vehicle unit is constituted by M1 (Mc1) and M2. In addition, FIG. 1 is an example, and all may be knitted by an electric vehicle, and the composition of the knitting and the vehicle unit is not limited to this.

[1-2. Configuration of vehicle unit]
Each vehicle unit is equipped with a power supply device including a main control device, a main transformer, an auxiliary power supply device, and the like (not shown), and the second car, the fourth car, the fifth car, and the eighth car are passed through a high voltage cable 10. In addition, the 4th car and the 5th car are connected by the connecting portion 10A. That is, power from each pantograph (current collector) 4 is supplied to each vehicle unit by the high-voltage cable 10 and the connecting portion 10A.

  Among the organized vehicles, a high-pressure equipment box 6 in which a vacuum circuit breaker, a lightning arrester, and other high-voltage equipment are housed is provided below the floor of M2 (No. 2, No. 4, No. 6, No. 6, and No. 8 cars). In addition, pantographs (current collectors) 4 that collect power from overhead lines are provided on the roofs of cars No. 4 and No. 6 in the M2 vehicle, and high voltage equipment is provided under the floors of No. 4 and No. 6 cars. There is provided a key box 5 in which keys 7A and 7B for locking and unlocking the high pressure equipment box locking devices 6CA and 6CB of the inspection lid 6B of the box 6 are provided. The key box 5 may be provided in the vehicle, not under the floor of the vehicle. Moreover, although two pantographs 4 are provided in the formation vehicle 1, three or more pantographs 4 may be provided.

  As shown in FIG. 1, each high-voltage equipment box 6 includes a storage section 6A in which high-voltage equipment (not shown) is stored, an inspection lid 6B that can open and close the opening of the storage section 6A, and the inspection lid 6B. It has two high pressure equipment box locking devices 6CA and 6CB for locking and unlocking.

  For example, the same number of key boxes 5 as the number of pantographs in the formation vehicle are provided, and two key boxes 5 are provided in the present embodiment. The No. 4 car key box 5 contains four first keys 7A for unlocking the high pressure equipment box locking device 6CA, while the No. 6 car key box 5 contains the high pressure equipment box. Four second keys 7B for unlocking the locking device 6CB are housed inside. Here, the first key 7A and the second key 7B are of different types, and the number of keys is equal to the number of high-voltage equipment boxes 6. The detailed configuration of the key box 5 will be described later.

  The high pressure device box locking device 6CA is locked and unlocked by the first key 7A, and the high pressure device box locking device 6CB is locked and unlocked by the other second key 7B. That is, in order to unlock the inspection lid 6B of the high-voltage equipment box 6, two keys 7A and 7B are required.

  The formation vehicle 1 is provided with a protective ground circuit 8 and an air circuit 9. Among the M2 vehicles, the fourth car and the sixth car have one end connected to the pantograph 4 and the other end connected to the ground side. The operation unit 8A of the protective ground circuit 8 that can be switched between the grounded state and the non-grounded state, the driver's cabin of the first car and the tenth car, and the key box 5 of the fourth car and the sixth car are operated. And a protective ground switch 8B (see FIG. 9). When the protective ground switch 8B is turned on, the overhead wire and the rail are short-circuited.

  The air circuit 9 supplies compressed air as a working fluid to the operation control unit 4A that moves the pantograph 4 up and down and the operation unit 8A of the protective ground switch 8. When compressed air is supplied to the operation control unit 4A, the pantograph 4 rises and can collect power from the overhead wire. In addition, when compressed air is supplied to the operating unit 8A, the protection ground circuit 8 can be switched between the ground / non-ground state.

  In the first key 7A of the key box 5 of the No. 4 car, the protective ground switch 8 of the own vehicle is in a grounded state, and the compressed air is supplied to the operation control unit 4A of the pantograph 4 and the operation unit 8A of the protective ground switch 8 Can be taken out when the pantograph 4 is lowered (that is, the pantograph 4 is lowered and the protective ground circuit 8 is grounded). The same applies to the second key 6B of the key box 5 of the sixth car. That is, when the first and second keys 7A and 7B are taken out, neither pantograph 4 is in the current collecting state.

  Thus, since the inspection lid 6B of the high-voltage equipment box 6 is locked / unlocked by the first and second keys 7A and 7B, any pantograph 4 is collecting power from the overhead line. The opening of the inspection lid 6B of the high-pressure equipment box 6 is prevented.

[1-3. Keybox configuration]
As shown in FIGS. 2 to 6, the key box 5 includes a box body 5A and a lid 5B that is rotatably supported by the box body 5A and can open and close the opening of the box body 5A. The key box 5 is provided, for example, in the casing of the compressed air supply device 30 including the air circuit 9, and the rotation shaft of the lid 5 </ b> B is connected to first and second cutoff cocks 21 and 22, which will be described later. When the body 5B is opened, the first and second shut-off cocks 21 and 22 are cut and the air circuit 9 is shut off.

  Further, the key box 5 is provided with a key box lock device 11 and a protective grounding switch 8B provided in the cab or the key box 5 is turned on, and the lid 5B is opened when the protective grounding circuit 8 is grounded. Unlock. As described above, there are four first keys 7A in the box body 5A of the key box 5 of the No. 4 car, and four second keys 7B in the box body 5A of the key box 5 of the No. 6 car. The basic structures of the key boxes 5 are common except that they are housed and the first and second keys 7A and 7B are different.

  The key box locking device 11 is provided in the box main body 5A, and includes a main body portion 11a and a first movable member 11b provided so as to be able to protrude and retract with respect to the main body portion 11a. Corresponding to the first movable member 11a, the lid body 5B is provided with a first engagement hole 5Ba (first engaged portion), and when the lid body 5B is in the closed state, the first movable member 11b is first. The engagement hole 5Ba is detachably engaged.

  The key box locking device 11 is an electric lock and is electrically linked to the protective ground switch 8B. When the protective grounding circuit 8 is in a non-grounding state, the first movable member 11b is in a protruding state in a non-energized state, and engages with the first engaged hole 5Ba to prohibit the opening of the lid 5B. . On the other hand, when the protective grounding switch 8B is turned on and the protective grounding circuit 8 is in the grounded state, the first movable member 11b is in the retracted state in the energized state, and the engagement with the first engaged hole 5Ba is released. Thus, the lid 5B can be opened.

  The key box 5 includes four key holders 12 for holding the first key 7A (or the second key 7B) along with the key box lock device 11 in the box body 5A. In the box body 5A, a micro switch 13 (cover body detecting means) is provided on the opposite side of the key box locking device 11 with the key holding part 12 interposed therebetween. The micro switch 13 releases the contact between the contact 13a and the protrusion 14 of the lid 5B by opening the lid 5B, and electrically detects the opening of the lid 5B. Note that the micro switch 13 serving as the lid detection unit may detect the closure of the lid 5B instead of opening the lid 5B.

  Each key holding portion 12 is a known mechanical lock including a main body portion 12a and a second movable member 12b provided so as to be able to appear and retract with respect to the main body portion 12a. The second movable member 12b protrudes from the main body portion 12a when the key 7A is pulled out from the key holding portion 12 (main body portion 12a), and retreats from the protruded state when the key 7A is held. Become. Corresponding to the second movable member 12b, the lid body 5B is provided with a second engagement hole 5Bb (second engaged portion), and when the lid body 5B is in the open state, the second movable member 12b is second. The engaging hole 5Bb is detachably engaged.

  Therefore, when the lid 5B is opened and the first key 7A (or the second key 7B) is pulled out, the second movable member 12b protrudes and engages with the second engaged hole 5Bb, and the first key The closing of the lid 5B is restricted without returning 7A (or the second key 7B). As described above, when the keys 7A and 7B are extracted, the open state of the lid 5B of the key box 5 is maintained, so that it is possible to prevent the operator from forgetting to return the key.

[1-4. Configuration of high-pressure equipment box]
As described above, the high-pressure device box 6 includes the storage portion 6A in which the high-pressure device is stored, the inspection lid 6B, and the two high-pressure device box locking devices 6CA and 6CB that lock and unlock the inspection lid 6B. Have.

  The operator can perform maintenance and inspection by opening the inspection lid 6B provided at the bottom of the storage portion 6A and entering the inside of the high-voltage equipment box 6.

  7 and 8 show details of the lock portion of the inspection door 6B. FIG. 7 is a view showing a state where the inspection lid 6B of the high-pressure device box 6 is unlocked, and FIG. 8 is a view showing a locked state. It is. Since the high pressure device box locking devices 6CA and 6CB and their surroundings have the same structure, the high pressure device box locking device 6CA and its surroundings will be described. As shown in FIGS. 7 and 8, the high-pressure device box locking device 6CA (6CB) includes a device main body 6Ca attached to the bottom of the storage portion 6A, and a movable rod portion 6Cb provided so as to be able to protrude and retract with respect to the device main body 6Ca. And have. The movable rod portion 6Cb is in the retracted state in the unlocked state in which the key 7A is in the lock portion, while it is in the protruding state in the locked state in which the key 7A is not in the lock portion. Engageably engages with the engaging hole 15a of the projecting piece 15 standing upright.

  In addition, a locking prohibiting member 16 that prohibits locking in a state in which the inspection lid 6B is opened is provided in the vicinity of the high pressure device box locking device 6CA of the inspection lid 6B. The locking prohibiting member 16 is rotatably supported with respect to the base portion 16a fixed to the support member 17 and the base portion 16a. When the inspection lid 6B is opened, the locking prohibiting member 16 rotates downward due to gravity, and the movable rod 6Cb And a protrusion restricting portion 16b facing the surface. Further, when the inspection lid 6B is closed, it is lifted by the projecting piece 15, and the locking prohibiting member 16 does not restrict the protrusion of the movable rod 6Cb. Reference numerals 18 and 19 denote upper and lower stopper portions that restrict the movable range of the protrusion restricting portion 16b.

  Therefore, when the inspection lid 6B is opened, it cannot be locked, and the inspection lid 6B can be prevented from being left open. In this way, if the inspection lid 6B of the high-voltage equipment box 6 is in an open state, the keys 7A and 7B cannot be removed, so that it is possible to prevent the operator from forgetting to close the inspection lid 6B.

[1-5. Air circuit configuration]
Next, the air circuit 9 will be described with reference to FIG. The air circuit 9 raises the pantograph 4 by supplying compressed air to the operation control unit 4A, and operates the protective ground switch 8B of the protective ground circuit 8 to switch to the ground / non-ground state.

  The air circuit 9 includes an auxiliary air nose 27 to which compressed air is supplied from an auxiliary electric air compressor (not shown), a pantograph air circuit 9A for operating the pantograph 4 by being supplied with compressed air from the auxiliary air nose 27, and a protective grounding switch 8B. And a protective ground switch air circuit 9B. In the pantograph air circuit 9A and the protective ground switch air circuit 9B, there are a first closing cock 21 (Pan raising cock) and a second closing cock 22 (EGS cutting cock) for blocking the supply of compressed air from the auxiliary air nose 27, respectively. Is provided. The first cutoff cock 21 of the pantograph air circuit 9A, the second cutoff cock of the protective ground switch air circuit 9B, and the opening / closing of the lid 5B of the key box 5 are interlocked.

  Specifically, as shown in FIG. 6, the first and second shut-off cocks 21 and 22 are connected to the rotation shaft of the lid 5B of the key box 5, and when the lid 5B is opened, the opening operation is mechanically performed. In conjunction with this, the air circuit 9 is shut off and the supply of compressed air is shut off. On the other hand, when the lid 5B is closed, the first and second cutoff cocks 21 and 22 are turned on to release the supply of compressed air.

  Further, the pantograph air circuit 9A is provided with first and second electromagnetic valves 23 and 24 that can shut off the supply of compressed air, respectively. The first and second electromagnetic valves 23 and 24 are linked to a microswitch 13 (lid body detecting means) that detects the opening of the lid 5B of the key box 5, and the lid 5B is opened to open the microswitch 13. When the position is reached, the first and second solenoid valves 23 and 24 are excited to cut off the supply of compressed air in the pantograph air circuit 9A.

  On the other hand, the protective ground switch air circuit 9B is provided with third and fourth solenoid valves 25 and 26 that can shut off the supply of compressed air, respectively. The microswitch 13 is also linked to the third and fourth electromagnetic valves 25 and 26, and when the lid 5B is opened and the microswitch 13 is in the open position, the third and fourth electromagnetic valves 25 and 26 are Energized to shut off the supply of compressed air in the protective ground switch air circuit 9B.

  As shown in FIG. 9, the air circuit 9 is provided with closing cocks 28 and 29, and the air circuit 9 can be manually cut off by an operator or the like.

[1-6. Work procedure in lock management system]
Next, an operation procedure in the locking management system will be described with reference to the flowchart of FIG.

  First, in S1, when the protective ground switch 8B is turned on and the protective ground circuit 8 is in the ground state, in S2, the first movable member 11b of the key box lock device 11 is in the retracted state and the lid 5B. Is unlocked. Thereby, the lid 5B of the key box 5 can be opened. On the other hand, when the protective grounding switch 8B is not turned on, the first movable member 11b maintains the protruding state, and thus the lid 5B remains locked.

  Next, in S3, when the lid 5B is opened by the operator, the first closing cock 21 (Pan raising cock) and the second closing cock 22 (EGS cutting cock) coaxial with the rotating shaft of the lid 5B are cut off. Thus, the flow of compressed air from the auxiliary air nose 27 to the pantograph air circuit 9A and the protective ground switch air circuit 9B is blocked (S4). As a result, the pantograph 4 rises and power from the overhead line is not supplied, and the grounding state of the protective ground circuit 8 is maintained, so that sufficient safety can be ensured for the operator.

  When the first key 7A (or the second key 7B) installed in the key holding unit 12 in the key box 5 is pulled out by the operator in S5, the second movable member 12b of the key holding unit 12 protrudes. The open state of the lid 5B of the key box 5 is maintained. As a result, forgetting to return the key can be prevented.

  Subsequently, in S6, the operator can unlock the high pressure equipment box locking devices 6CA and 6CB of the inspection lid 6B of the high pressure equipment box 6 using the key extracted in S5. Maintenance inspection of various devices becomes possible (S7). At this time, two keys (the first key 7A and the second key 7B) are required to unlock the high pressure device box locking devices 6CA and 6CB. Therefore, power is not supplied from the pantograph 4 of the own vehicle and the pantograph 4 of the other vehicle connected via the connection unit 109. In addition, when the inspection lid 6B is in an open state, the keys 7A and 7B cannot be removed from the high-pressure device box lock devices 6CA and 6CB, respectively, so that the operator cannot forget to close the inspection lid 6B after maintenance inspection. can do.

  When the inspection lid 6B is closed and the high pressure device box locking devices 6CA and 6CB are locked in S8, the keys 7A and 7B can be removed from the high pressure device box locking devices 6CA and 6CB. Thereafter, the operator returns the extracted keys 7A and 7B to the key holding unit 12 of the key box 5 (S9). Thereby, the 2nd movable member 12b of the key holding | maintenance part 12 reverse | retreats from a protrusion state, becomes an accommodation state, and can close the cover body 5B of the key box 5 (S10). At this time, the first closing cock 21 and the second closing cock 22 that are coaxial with the rotating shaft of the lid 5B are turned on, and are restored to the initial state.

  In this way, when the operator performs maintenance and inspection of the high-voltage equipment box, electric power is supplied to the high-voltage equipment box 6 without performing the separation work of the high-voltage cable 10 and the connecting portion 10A through which each vehicle passes. Therefore, it is possible to ensure sufficient safety for the worker.

[2. Modified example]
It is also possible to carry out by changing the above embodiment as follows.
(1) In the embodiment, the formation vehicle 1 includes four vehicle units. However, the vehicle 1 may include two vehicle units, and may include four or more vehicle units.
(2) The key box contains four first keys or four second keys. However, the number is not limited to four, as long as the number of high-voltage equipment boxes included in the formation vehicle is provided. Good. If there is no need to work simultaneously, one key may be provided.

1 Formation vehicle Mc1, M1, M2, T, Tc Vehicle 4 Pantograph (current collector)
4A Operation control unit 5 Key box 5B Lid 6 High pressure equipment box 6B Inspection lid 6CA, 6CB Locking device 7A, 7B for high pressure equipment box Key 8 Protective ground circuit 8A Grounding operation part 8B Protective ground switch 9 Air circuit 9A Pantograph air circuit 9B Protective ground switch air circuit 10 High-voltage cable 10A Connection unit 11 Lock device 11b for key box First movable member 12 Key holding unit 13 Micro switch (lid detection means)

Claims (7)

In a knitted vehicle in which vehicle units composed of at least two electric vehicles are connected,
A current collector that is provided in at least two vehicle units of the trained vehicle and collects electric power from an overhead line;
A high-voltage cable that is passed through each of the vehicle units and supplies power from the current collector;
A storage unit storing the high-voltage device to which the electric power is supplied; an inspection lid capable of opening and closing the opening of the storage unit; and a high-pressure device box locking device for locking and unlocking the inspection lid, and at least two A high voltage equipment box provided in each of the vehicle units;
Locking management of high-voltage equipment boxes for railway vehicles, comprising at least one corresponding to the current collector and a key box in which a key for unlocking the high-voltage equipment box locking device is housed A system,
The locking device for a high-voltage equipment box uses the key corresponding to the current collector and the key corresponding to a current collector other than the current collector to unlock the inspection lid. Management system. One end is connected to the current collector and the other end is connected to the ground side, and a protective ground switch that can be switched to a grounded state or a non-grounded state,
An air circuit for supplying compressed air for operating the current collector and the protective ground switch;
The key stored in the key box can be taken out when the protective ground switch is in a ground state and the air circuit to the current collector and the protective ground switch is shut off. The locking management system of the high-voltage equipment box for railway vehicles according to 1.   The railway vehicle according to claim 2, wherein the key box further includes a lid that can be opened and closed, and a key box locking device that unlocks the lid when the protective ground switch in the vehicle unit is in a grounded state. Locking management system for high-pressure equipment boxes. The key box further includes a lid that can be opened and closed,
The lock management of a high-voltage equipment box for railway vehicles according to claim 2 or 3, wherein when the lid of the key box is opened, the air circuit to the current collector and the protective ground switch is shut off. system. A lid detecting means for detecting opening or closing of the lid of the key box;
The locking management system for a high-voltage equipment box for a railway vehicle according to claim 3 or 4, wherein the protective grounding switch is prohibited from switching to a non-grounding state when the lid is open. The key box has a key holding unit that holds the key and a protruding state that protrudes when the key is pulled out of the key holding unit, and when the key is held, the key box is retracted from the protruding state. A movable member that is in a storage state,
The high-voltage equipment box for a railway vehicle according to any one of claims 3 to 5, wherein the lid of the key box engages with the movable member when the key is pulled out and is prohibited from being closed. Lock management system. The formation vehicle is
A current collector provided in at least two vehicle units;
One current box for one current collector;
One vehicle unit includes one high-pressure equipment box,
One key box contains four first keys, and the other key box contains four second keys,
The railway according to any one of claims 1 to 6, wherein the high-voltage device box locking device of each high-voltage device box unlocks the inspection lid of the high-voltage device box using first and second keys. Locking management system for high-voltage equipment boxes for vehicles.

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