JP6457857B2 - Rail changer - Google Patents

Description

  The present invention relates to a rail exchanging device used when exchanging an existing rail laid on a roadbed of a railroad track with a new rail.

  In railroad tracks, existing rails that have become old are replaced with new rails, and a rail exchanging apparatus has been put into practical use in order to efficiently perform such rail exchanging work. As shown in FIG. 6, the conventional rail exchanging device has a pair of left and right new rails Rn1, which are temporarily placed outside the existing rails while moving on a pair of left and right existing rails Ro1 and Ro2 laid on the roadbed. A rail exchanging apparatus comprising a first exchanging machine 10A that lifts Rn2 and lays it at a rail laying position after removing the existing rail, and a second exchanging machine 10B that lifts the existing rail and moves it to the outside of the new rail while moving on the new rail. There is. In addition, as invention regarding such a rail exchange apparatus, there exist some which are indicated by patent documents 1 and 2, for example.

JP 2007-255131 A JP 2012-237110 A

  The conventional rail exchanging device shown in FIG. 6 has an engine mounted on the first rail exchanging device 10A, and the first rail exchanging device 10A and the second rail exchanging device 10B are coupled by a wire W, and the first rail exchanging device 10A is the first rail exchanging device. It was a towing system that moved while towing the two-rail exchange 10B. In such a rail exchanging device, the wire may loosen due to the meandering of the rail, etc., and the operator can adjust the wire tension by touching the rod etc. to eliminate the slack of the wire, or the curve section In order to avoid an undesired force acting between the first rail exchange machine and the second rail exchange machine due to the difference in speed between the left and right wheels, the lengths of the wires on the inner and outer rail sides are reduced. It was necessary to adjust. For this reason, the conventional rail exchanging device has a problem that workability is poor and it takes a long time to work, and a very large tension acts on the wire, which may be dangerous.

  The present invention has been made paying attention to the above-described problems. By mounting the engine on each of the first rail exchange machine and the second rail exchange machine, it becomes unnecessary to pull by wire, and the first rail exchange machine and Providing a rail exchanging device with good workability and no danger by adopting a control system that detects the distance to the second rail exchanging machine and moves it so as to keep the distance constant. With the goal.

In order to solve the above problems, the present invention
A first rail exchange that moves on a pair of existing rails laid on the roadbed of a railroad track and lifts a pair of new rails temporarily placed outside the existing rails and lays them at a rail laying position after removal of the existing rails And a second rail that lifts the existing rail and moves it to the outside of the new rail that has been laid while moving on the new rail that is laid out at a predetermined distance in the same direction as the moving direction of the first rail exchanger. In a rail exchanging device comprising an exchange,
The first rail switch and the second rail switch are:
A traveling wheel that rolls on a rail, a traveling drive source that rotationally drives the traveling wheel, a control device that controls the traveling drive source, and wireless communication means,
The second rail switch includes distance detection means capable of detecting a distance from the first rail switch,
The control device for the second rail exchange transmits a travel start command to the first rail exchange via the wireless communication means, and based on a signal from the distance detection means of itself, Is configured to control its own travel drive source so as to move while maintaining a distance between the aircraft within a predetermined range ,
The control device of the first rail exchange and the second rail exchange comprises a data storage device,
The data storage device of the second rail exchange stores a plurality of track conditions on which rails are laid and the inter-machine distance suitable for each track condition, and the control device of the second rail switch inputs the The inter-machine distance suitable for the specified track condition is read from the data storage device, and the traveling drive source is controlled so as to maintain the inter-machine distance .

According to the configuration as described above, the control device for the second rail exchange to be moved automatically controls the traveling drive source so as to move following the preceding first rail exchange at an appropriate distance. Therefore, the rail replacement work can be smoothly performed, so that the workability is good, and the rail replacement work without danger is possible because the pulling by the wire is unnecessary.
Moreover, according to the said structure, even if it is a worker unfamiliar with operation, since the distance between machines suitable for a track condition can be set easily, work efficiency can be improved.

Preferably, each of the first rail exchange and the second rail exchange includes a traveling speed detection means,
The control device for the second rail exchange transmits the traveling speed information inputted or set in advance to the first rail exchange via the wireless communication means, and from the traveling speed information and its own traveling speed detection means. Controlling the driving source of the vehicle based on the signal of
The control device of the first rail exchange is configured to control the travel drive source of the first rail exchange based on the received travel speed information and a signal from the travel speed detection means of the first rail exchange.
According to such a configuration, the traveling speed information is input or set by the second rail switch and is transmitted from the second rail switch to the first rail switch, so that the traveling speed can be easily set and moved at a desired speed. Therefore, the workability is good, and different traveling speed information is set for the first rail exchange and the second rail exchange, so that the distance between the machines changes greatly and the work is interrupted. The situation can be avoided.

Further, preferably, the control device for the second rail exchange switches the wireless communication unit when the current inter-machine distance deviates from a predetermined range based on a signal from the distance detection unit. And a travel stop command is transmitted to the control device of the first rail exchange.
Under normal working conditions, the load on the preceding first rail switch is heavier than the load on the subsequent second rail switch, so the second rail switch does not lag behind the first rail switch. If any abnormality occurs in, the second rail exchange may be delayed. In such a case, the work needs to be interrupted, but when the distance between the second rail exchange and the first rail exchange deviates from a predetermined range set in advance, to the control device of the first rail exchange By sending the travel stop command, it is possible to avoid the occurrence of a major problem by interrupting the work and investigating the cause of the distance between the aircraft being out of the preset range. Thus, the entire work can be carried out smoothly.

Further preferably, the trajectory condition includes a straight section, a curved section, a flat section, an upslope change point, and a downslope change point,
When the distance between the machines in the straight section and flat section is the basic distance,
The control device of the second rail exchange is
When the down slope change point is entered or selected as the orbital condition, set the inter-machine distance to a distance shorter than the basic distance,
When an ascending slope change point is entered or selected as the orbital condition, set the inter-machine distance to a distance longer than the basic distance,
When a curved section is input or selected as a trajectory condition, the inter-machine distance is set to a distance shorter than the basic distance on the condition that it is not an upslope change point.
According to such a configuration, even if the track conditions such as the gradient and the curve are different, it is possible to easily set the inter-machine distance suitable for the track conditions. It can be avoided.

  According to the present invention, a rail comprising a first rail exchanger that lays a new rail at a laying position while moving on an existing rail, and a second rail exchanger that moves and removes the existing rail while moving on the new rail. In the exchanging device, there is an effect that the rail exchanging work can be executed with good workability and no danger.

It is a top view which shows the rail exchange apparatus which concerns on one Embodiment of this invention. BRIEF DESCRIPTION OF THE DRAWINGS The rail switch which comprises the rail switch apparatus of embodiment is shown, (A) is a side view of the preceding 1st rail switch, (B) is a front view of the 2nd rail switch of a back | latter. It is a block diagram which shows the structural example of the control system of the rail switch of embodiment. The control procedure by the control apparatus of the rail switch of embodiment is shown, (A) is a flowchart of a 1st rail switch, (B) is a flowchart of a 2nd rail switch. (A) And (B) is a figure which shows an example of the setting assistance screen which makes easy the setting of the distance between machines in the control apparatus of the rail switch of embodiment. It is a schematic top view which shows the relationship between the preceding rail switch and the following rail switch in the conventional wire pulling type rail switch.

Hereinafter, an embodiment of a rail exchange device according to the present invention and a control method in a rail exchange constituting the device will be described in detail with reference to the drawings.
FIG. 1 shows a rail exchanging device according to this embodiment, and the rail exchanging device is composed of a first rail exchanging device 10A and a second rail exchanging device 10B having substantially the same configuration (hardware). Of these, the first rail exchange 10A moves on the pair of left and right existing old rails Ro1 and Ro2 laid on the road floor and lifts the pair of left and right new rails Rn1 and Rn2 temporarily placed outside the existing rails. Then lay it at the rail laying position after removing the existing rail. Further, the second rail exchange 10B lifts the old rails Ro1 and Ro2 and moves them to the outside of the new rails while moving on the new rails Rn1 and Rn2 in a direction to follow the first rail exchange 10A.

That is, the first rail exchange 10A is the preceding rail exchange, and the second rail exchange 10B is the following rail exchange 10B. The first rail exchange 10A and the second rail exchange 10B are controlled to travel in the same direction at a distance of about 20 m from each other.
In the rail exchanging apparatus according to the present embodiment, the first rail exchanging machine 10A and the second rail exchanging machine 10B each include an engine (or a motor) and a control device, and are configured to be able to travel independently. In the following description, the preceding first rail exchange 10A may be abbreviated as No. 1, and the following second rail exchange 10B may be abbreviated as No. 2. In FIG. 1, what is shown between the first rail exchange 10A and the second rail exchange 10B is that the old rails Ro1 and Ro2 behind the first rail exchange 10A are lifted and moved to the outside of the track. Or a Yamakoshi 40 used to lift and relocate the new rails Rn1, Rn2 temporarily placed outside the track.

Next, a specific configuration of the rail exchange device according to the present embodiment will be described with reference to FIG. Among these, (A) is a side view of the preceding first rail exchange 10A, and (B) is a front view (viewed from the advancing direction) of the following second rail exchange 10B. As described above, the first rail exchange 10A and the second rail exchange 10B have substantially the same configuration.
The difference between the first rail switch 10A and the second rail switch 10B is that the second rail switch 10B is provided with an infrared transmitter / receiver 18 as a distance sensor at the top, whereas the first rail switch 10A has an infrared reflector at the rear. 30 is provided. Also, the arrangement of a pair of large and small guide rollers 13a and 13b for guiding the lifted rail is different. In the rail exchange machine 10B, as shown by the solid line in FIG. 2B, the large guide roller 13a is located on the inner side and the small guide roller. 13b is located outside, in the rail exchange 10A, as shown in FIG. 1, the guide roller 13a is located outside and the guide roller 13b is located inside.

In order to make it possible to change the fixing position of the guide roller as described above, in this embodiment, the base 12 that supports these rollers is provided on both sides of the arm 11 that is provided in the apparatus main body 10 and extends in the left-right direction. It is comprised so that it may be detachably fixed to.
As shown in FIG. 2 (B), the second rail exchange 10B (10A, which follows) has a main body frame 14 and a front, rear, left and right rolling on the new rails Rn1, Rn2 provided at the lower part of the main body frame 14. A total of four traveling wheels 15A and four side rollers 15B for preventing lateral shaking by abutting against the inner surface of the head of the traveling rail are provided. A power unit 16 having an engine and a hydraulic pump as a travel drive source is provided inside the main body frame 14, and a Patrite (registered trademark) 17 as an alarm lamp is provided on the upper portion of the main body frame 14. A signal transmitter / receiver (communication device) 19 that performs wireless communication with the rail exchange 10A and a control device 20 that controls the entire device are provided. Further, as described above, the second rail switch 10B that follows is provided with the infrared transmitter / receiver 18 as a distance sensor that irradiates infrared rays forward in the traveling direction and receives reflected waves.

On the other hand, on the rear part of the main body frame 14 of the preceding first rail exchange 10A, as shown in FIG. 2 (A), a reflector 30 in a substantially vertical posture that reflects infrared rays emitted from the succeeding second rail exchange. Is provided. Further, as shown in FIGS. 1 and 2A, emergency stop buttons 31A and 31B are provided on the side surfaces of both ends of the arm 11, respectively, but not shown in FIGS. An electric brake and a speed sensor for speed detection are provided in the vicinity of the traveling wheel 15A (see FIG. 3).
According to the rail exchanging device of the above embodiment, the control device for the second rail exchanging device that follows is automatically moved at an appropriate distance so that the traveling drive source moves following the preceding first rail exchanging device. Since it can be controlled, the rail replacement work can be smoothly advanced. Therefore, workability is good and rail exchanging work without danger is possible because traction by a wire is unnecessary.

FIG. 3 shows a configuration example of a control system in the rail exchange (10A, 10B) of the present embodiment.
As shown in FIG. 3, the control system of the rail exchange 10A according to the present embodiment provides the control device 20 and setting information such as a moving speed and a command for starting operation to the control device 20 from the outside. An input operation unit 32 is provided, and signals from the emergency stop buttons 31 </ b> A and 31 </ b> B and the speed sensor 33 are input to the control device 20. The input operation unit 32 can be configured by an input operation panel including a plurality of push button switches, a remote controller, or a touch panel including a display. The control system of the other rail switch 10B is shown in a simplified manner.

In the present embodiment, the power unit 16 including the patrol light 17 and the traveling drive source is controlled by the control device 20 of the second machine, and the control device 20 is connected to the wireless communicator of another rail exchange via the wireless communicator 19. It communicates with 19 'and transmits information such as speed and a command such as a stop to the control device 20' of the other rail exchange, and the control device 20 of the second unit includes an infrared irradiator 18A and an infrared detector 18B. The infrared transmitter / receiver 18 is used to measure the distance from the first machine. The brake 34 for applying braking is provided downstream of the power unit 16 and is controlled via the power unit 16.
The control device 20 that performs the control as described above includes a data processing unit 21 such as a microcomputer, and a data storage unit including a semiconductor memory or a magnetic disk device that stores setting information and a control program executed by the data processing device 21. 22. As a communication method of the wireless communication device 19, a wireless PAN (short-range wireless) represented by Bluetooth, UWB (Ultra Wide Band), or the like can be used.

FIG. 4 shows a control procedure by the controller 20 of each rail exchanger in the rail exchanger of the embodiment. In FIG. 4, (A) is the control flow of the first machine, and (B) is the control flow of the second machine.
As will be described below, in the present embodiment, the control device 20 of the second rail exchange 10B (No. 2) that follows is operated as the main control device, and the preceding first rail exchange 10A (No. 1). The control device is configured to operate as a secondary control device that receives information and commands from the control device of the second machine via a wireless communication device and controls its own device.

The reason why such a configuration is adopted is that when the rail exchange as shown in FIG. 6 is performed using two rail exchange machines from the work experiment conducted by the present inventors, the load of the first machine is 2 When the distance between the two exchanges changes because the load on the Unit 2 is heavier, the response speed is faster when the speed control is performed mainly by the Unit 2 controller than the opposite case. This is because it became clear.
By the way, the reason why the load of Unit 1 is heavier is considered to be that the amount of the rails in Unit 1 is larger than that of Unit 2. However, when actually exchanging the rails, the rail that Unit 2 lifts is the old rail, so the running resistance applied to the guide rollers 13a and 13b increases due to the rust on the lower surface of the rail, and Unit 2 is the first unit. In some cases, the moving speed may be slower due to a larger load.

In the present embodiment, the following control is performed in consideration of the above situation.
First, the control flow of the second machine in FIG. 4 (B) will be described. As shown in FIG. 4B, the control device 20 of the second machine stores setting information related to the traveling speed (V0), the inter-machine distance (D0), and the like input from the input operation unit 32 in the data storage unit 22. (Step S1). Subsequently, the set speed information is transmitted to the control device of the first unit using the wireless communication device 19 (step S2), and then a movement start command (command) is transmitted to the control device of the first unit (step S3). ).

Next, the control device 20 of the second machine determines whether or not the first machine has started moving (running) based on the signal from the infrared transmitter / receiver 18 (step S4), and determines that the movement has started (Yes). Then, the own power unit 16 is controlled and the movement control is executed by itself (step S5). Thereafter, the distance from the first machine is measured based on the signal from the infrared transmitter / receiver 18 (step S6), and it is determined whether or not the distance between the machines is within a preset allowable range (D0 ± α). (Step S7).
Here, if it is determined that the inter-machine distance is not within the preset allowable range (D0 ± α) (No), the process proceeds to step S9 and a movement stop command (command) is issued by wireless communication to the first machine. To the control device.

On the other hand, if it is determined in step S7 that the inter-machine distance is within the preset range (D0 ± α) (Yes), the process proceeds to step S8, and the emergency stop button 31A or 31B has been pressed. If it is determined that the emergency stop button has not been pressed (No), the process returns to step S5 to continue the movement control. If it is determined in step S8 that the emergency stop button has been pressed (Yes), the process proceeds to step S9, and a movement stop command (command) is transmitted to the control device of the first unit by wireless communication.
Thereafter, the control device of the second unit determines whether the first unit has stopped based on the signal from the infrared transmitter / receiver 18 (step S10), and confirms that the first unit has stopped and controls the power unit 16 to move. Stop (step S11). In addition, after transmitting the movement stop command (command) to the control device of the first unit in step S9, the second unit immediately stops moving, and when the distance between the units is long, the movement start command is transmitted again to the first unit. You may make it do.

  On the other hand, the control device 20 ′ of the first unit first sets its own wireless communication device 19 ′ to the operating state (step S21), and determines whether or not the speed information transmitted by the control device 20 of the second unit in step S2 has been received. (Step S22) If it is determined that it has been received, the received speed information is stored in its own data storage unit (Step S23). Further, the control device of No. 1 determines whether or not the movement start command (command) transmitted by the No. 2 control device in Step S3 has been received (Step S24), and if it has been received, it has been received in Step S22. Movement control is executed according to the speed information (step S25). Thereafter, it is determined whether or not the emergency stop button 31A or 31B has been pressed or a movement stop command (command) from the second machine has been received (step S26). If it is determined that the movement stop command (command) is not received (No), the flow returns to step S25 to continue the movement control.

  If it is determined in step S26 that the emergency stop button has been pressed or a movement stop command (command) has been received (Yes), the process proceeds to step S27 to control the power unit and stop the movement. In addition, when the movement is stopped in step S27 in response to receiving the movement stop command from the second machine, the control apparatus 20 ′ of the first car may transmit response information (ACK) notifying that it has stopped. However, when the first unit is stopped, the control unit of the second unit can detect that the first unit has stopped based on the signal from the infrared transmitter / receiver 18, and therefore does not need to transmit response information (ACK). . For the same reason, when the emergency stop button 31A or 31B is pressed in the first unit and stopped, it is possible to configure the movement stop command to be transmitted to the second unit. good.

According to the control as described above, the traveling speed information is input or set by the second rail switch and is transmitted from the second rail switch to the first rail switch. Therefore, the traveling speed information is set compared to the method of setting the traveling speed separately. Is easy, and the workability is good because it can be moved at a desired speed. In addition, by setting different traveling speed information for the first rail exchange and the second rail exchange, it is possible to avoid a situation in which the distance between the machines greatly changes and the work is interrupted. .
Further, when the distance between the first rail exchange and the second rail exchange deviates from a predetermined allowable range, a travel stop command is transmitted from the second rail exchange to the control device of the first rail exchange. By stopping the operation, it is possible to avoid the occurrence of a major problem by suspending the work and investigating and coping with the cause that the inter-machine distance deviated from the preset allowable range. It can proceed smoothly.

Next, a modification of the above embodiment will be described.
In the above embodiment, the control device 20 of the second machine first stores setting information related to the traveling speed (V0), the inter-machine distance (D0), and the like input from the input operation unit 32 in the data storage unit 22. However, in this modification, when the operator inputs the condition of the track to be worked on instead of inputting the numerical value indicating the distance from the input operation unit 32 with respect to the inter-machine distance, the control device 20 automatically and appropriately It is configured so that a proper distance can be set.
In order to enable such automatic setting, a data table as shown in the following Table 1 is stored in advance in the data storage unit 22 of the control device 20.

In Table 1, “basic” means a distance of about 20 m, “short” means a distance of about 18 m, and “long” means a distance of about 22 m. However, these numerical values are examples.
When a rail switcher approaches a curve section or slope change point, there is a difference in the traveling speed of each rail switcher, and the rail replacement work may be interrupted due to a change in the inter-machine distance. As shown in Fig. 1, by changing the inter-machine distance according to the condition of the track on which the work is performed, it is possible to avoid a decrease in work efficiency due to the change in the track condition, and the rail replacement work is carried out smoothly. can do.

Furthermore, in order to make it easier to input the conditions of the trajectory to be worked on, the control device 20 displays, for example, a “straight section”, “curve (right curve)”, It is desirable to display a setting operation support screen on which images of setting buttons with characters such as “curve (left curve)”, “uphill”, “downhill” are arranged.
Specifically, for example, as shown in FIG. 5A, first, “straight section”, “relaxation curve (left and right curve)”, “curve (right curve)”, and “curve (left curve)” are added respectively. Display a screen with an image of a setting button, and select “Linear section”, “Relaxation curve (left / right curve)”, “Curve (right curve)”, or “Curve (left curve)”.

Subsequently, as shown in FIG. 5 (B), the setting buttons to which “flat section”, “uphill slope change point”, “downhill slope change point”, “uphill slope”, and “downhill slope” are attached respectively. Display a screen with an image, and select one.
When the setting button on the screen is operated, the control device 20 reads the distance between the machines corresponding to the selected condition from the data table of the data storage unit 22 and sets it. As a result, the operator does not need to memorize the distance between the machines suitable for the condition of the track on which the work is to be performed as a numerical value, and visually confirms the track condition according to the setting screen at the work site. Thus, it becomes possible to set an appropriate inter-machine distance, and even an operator unfamiliar with the operation of the device can easily set the distance.

  As mentioned above, although this invention was demonstrated based on embodiment, this invention is not limited to the said embodiment, In the range which does not deviate from the summary of invention, it can change suitably. For example, in the above-described embodiment, a case has been described in which the first rail exchange 10A that precedes and the second rail exchange 10B that follows a slightly different configuration are used, but the two exchanges have exactly the same configuration. It may be. Specifically, in the above-described embodiment, the infrared transmitter / receiver 18 as a distance sensor is mounted only on the second rail switch 10B that follows, and the reflector 30 is provided only on the preceding first rail switch 10A. However, the infrared transmitter / receiver 18 and the reflector 30 may be provided in both of the exchanges. In addition, by making the infrared transmitter / receiver 18 and the reflector 30 detachable, the reflector 30 is attached to the preceding first rail exchanger 10A at the work site, and the succeeding second rail exchanger 10B is attached. May be equipped with an infrared transceiver 18.

  Moreover, although the said embodiment demonstrated the case where driving control of the 1st rail switching machine 10A and the 2nd rail switching machine 10B was carried out by each control apparatus 20, the arm 11 of the 1st rail switching machine 10A and the 2nd rail switching machine 10B is described. Wire locking portions are provided at both ends, the first rail exchange 10A and the second rail exchange 10B are connected by two wires, and the power unit is operated only by the first rail exchange 10A. The rail exchange 10B may be moved by being pulled by a wire. In this case, only the control device 20 of the first rail exchange 10A is operated. Such a function is an effective function when the power unit 16 of one exchange breaks down or communication by a communication device cannot be performed normally.

10A, 10B Rail changer 11 Arm 13a, 13b Guide roller 14 Body frame 15A Traveling wheel 15B Side roller 16 Power unit (traveling drive source)
17 Patlight (alarm lamp)
18 Infrared transmitter / receiver (distance sensor)
19 Wireless communication device 20 Control device 21 Data processing device 22 Data storage device 30 Reflector 40 Yamakoshi device

Claims (4)

A first rail exchange that moves on a pair of existing rails laid on the roadbed of a railroad track and lifts a pair of new rails temporarily placed outside the existing rails and lays them at a rail laying position after removal of the existing rails And a second rail that lifts the existing rail and moves it to the outside of the new rail that has been laid while moving on the new rail that is laid out at a predetermined distance in the same direction as the moving direction of the first rail exchanger. In a rail exchanging device comprising an exchange,
The first rail switch and the second rail switch are:
A traveling wheel that rolls on a rail, a traveling drive source that rotationally drives the traveling wheel, a control device that controls the traveling drive source, and wireless communication means,
The second rail switch includes distance detection means capable of detecting a distance from the first rail switch,
The control device for the second rail exchange transmits a travel start command to the first rail exchange via the wireless communication means, and based on a signal from the distance detection means of itself, Is configured to control its own travel drive source so as to move while maintaining a distance between the aircraft within a predetermined range,
The control device of the first rail exchange and the second rail exchange comprises a data storage device,
The data storage device of the second rail exchange stores a plurality of track conditions on which rails are laid and the inter-machine distance suitable for each track condition, and the control device of the second rail switch inputs the The rail exchanging device is configured to read an inter-machine distance suitable for the specified track condition from the data storage device and to control the traveling drive source so as to maintain the inter-machine distance . Each of the first rail exchange and the second rail exchange includes travel speed detection means,
The control device for the second rail exchange transmits the traveling speed information inputted or set in advance to the first rail exchange via the wireless communication means, and from the traveling speed information and its own traveling speed detection means. Controlling the driving source of the vehicle based on the signal of
The control device of the first rail exchange is configured to control the traveling drive source of the first rail exchange based on the received traveling speed information and a signal from the traveling speed detection means of the first rail exchange. Item 4. The rail exchange device according to item 1.   The control device for the second rail exchange uses the first radio communication unit to determine whether the current inter-machine distance deviates from a predetermined range based on a signal from the distance detection unit. The rail exchanging device according to claim 1 or 2, wherein the rail exchanging device is configured to transmit a travel stop command to a control device of the rail exchanging machine. The trajectory conditions include a straight section, a curved section, a flat section, an upslope change point, and a downslope change point,
When the distance between the machines in the straight section and flat section is the basic distance,
The control device of the second rail exchange is
When the down slope change point is entered or selected as the orbital condition, set the inter-machine distance to a distance shorter than the basic distance,
When an ascending slope change point is entered or selected as the orbital condition, set the inter-machine distance to a distance longer than the basic distance,
When the curved section is input or selected as a track conditions, either on condition that it is not a rising slope changes, the machine distance of claims 1 to 3, characterized in that to set the distance shorter than the basic distance rail exchange apparatus according to any.