An automatic transmission device for train axles that can adapt to multiple track gauges and change direction

Abstract

The present invention discloses an automatic transmission device for train axles that can adapt to multiple track gauges and can be changed in direction. The device comprises a wheelset guide rail and a wheelset disposed on the guide rail, as well as a trolley, a trolley drive device, a wheelset lifting device, a wheelset rotation device, and a control system. The device can meet the needs of axle transmission for different track gauges and can change the direction of axle transmission. The trolley drives the trolley to move by rotating a pin gear, and the driving output force acts directly on the foundation, preventing the trolley from slipping when starting or traveling, thereby improving stability. Furthermore, the flatness requirements for the track installation foundation are not high, and construction is simple. In addition, the gear processing adopts a flat wire cutting process; the pin shaft processing adopts a seamless steel pipe set method. This can greatly reduce manufacturing costs and subsequent maintenance costs.

Description

Technical Field

[0001] The invention relates to an automatic transmission device, in particular to an automatic transmission device for train axles that can adapt to multiple track gauges and can be directional-changed. Background Art

[0002] As the main artery of the national economy, a vital national infrastructure, and a popular means of transportation, railways play a crucial role in my country's economic and social development. With the continuous development of China's railway industry, high-speed and heavy-load railway freight cars are a key development strategy. Freight car operating speeds have increased significantly from 40-60 km / h to 80-120 km / h, and the load capacity of each car has also increased to 70-80 tons. Freight car axles and bogies are crucial components of the running gear. In actual operation, axle bearing "hot axles" are common, and failures of bogie components such as bolsters, side frames, cams, and springs are frequent, directly impacting railway operational safety. To ensure safe and reliable freight car operation, the reliability and safety requirements for freight car axles and bogies are becoming increasingly stringent. To this end, the state has issued specific documents requiring mandatory testing of freight car axles after assembly.

[0003] Currently, at major domestic railway freight car axle manufacturers, the primary method for transporting axles between inspection stations involves manual movement, overhead crane hoisting, and on-site vehicle transport. However, railway freight car axles undergo multiple inspections, each corresponding to a different inspection station. These stations are typically located in separate locations. This results in high labor intensity, low axle inspection efficiency, and increased inspection costs due to the frequent switching between inspection stations.

[0004] A small number of axle manufacturers have mechanized the axle transport process through electrical, pneumatic, and hydraulic methods. However, these devices lack automation, requiring manual operation. Their low level of intelligence prevents them from implementing intelligent judgment and fault diagnosis. Some manufacturers also produce axles of various types, including RE2B, RE2A, RE2, RD2, RD2Y, RD3, and RB2. These axles vary in appearance and gauge. Consequently, the same conveyor track can only accommodate axles of the same gauge, resulting in a single transport track and limited axle types. Summary of the Invention

[0005] In view of this, an object of the present invention is to provide a train axle automatic transmission device that can adapt to multiple track gauges and can be changed in direction, so as to solve the problems pointed out in the above background technology.

[0006] In order to achieve the above-mentioned purpose of the invention, the technical solutions adopted are as follows:

[0007] An automatic transport device for train wheel axles that can adapt to multiple track gauges and change direction, comprising a wheelset guide rail and a wheelset disposed on the guide rail, a traveling trolley, a trolley drive device, a wheelset lifting device, a wheelset rotating device, and a control system;

[0008] The traveling trolley is composed of a base and traveling wheels arranged on the base;

[0009] The trolley drive device includes a running guide rail unit and a drive unit, the running rail unit includes two guide rail bases symmetrically and parallelly arranged below the wheel pair guide rails, the running wheels run along the guide rail base, the guide rail base is installed on a pad, a plurality of connecting rods are installed between the two pads, the plurality of connecting rods are evenly spaced along the length direction of the guide rail base, a pin shaft sleeve is fixed on the connecting rod, the drive unit includes a drive motor, a reducer and a transmission gear, the drive motor and the reducer are both installed on the running trolley, the output end of the drive motor is connected to the input end of the reducer, the output end of the reducer is installed on the transmission gear, and the transmission gear is meshed with the pin shaft sleeve;

[0010] The wheelset lifting device comprises a first support base and a lifting motor mounted on the first support base, wherein the first support base is fixedly mounted on the base, and an output end of the lifting motor has a lifting electric push rod;

[0011] The wheelset rotation device includes a rotary reducer, a second support seat and a third support seat, wherein the second support seat is arranged at the upper end of the lifting electric push rod, and the rotary reducer is arranged on the second support seat, for completing the 360° rotation of the wheelset in the lifting state, so as to realize the transfer of the wheelset in different directions, and the output end of the rotary reducer is provided, and the third support seat is provided with a card slot for placing the wheelset;

[0012] The control system includes a PLC controller and a sensor group. The sensor group obtains status information of the device. The PLC controller is connected to the sensor group, the drive motor, the lifting motor and the rotary reducer through signal transmission lines. The PLC controller receives and processes the status information from the sensor group and outputs control signals to the drive motor, the lifting motor and the rotary reducer.

[0013] As a further improvement of the present invention, a V-shaped positioning block is installed on the guide rail base, and the V-shaped positioning block is an angle iron welded to the guide rail base, and the angle between the two sides of the angle iron is 90°.

[0014] As a further improvement of the present invention, it also includes a guide rail centering adjustment and fastening unit, which includes an adjustment screw, a locking nut and a pressure block. The adjustment screw is connected to the connecting rod after passing through the pad. The adjustment screw is provided with a locking nut, and a pressure block is provided at one end of the adjustment screw.

[0015] As a further improvement of the present invention, the device also includes a first sensor fixing rod, a second sensor fixing rod and a third sensor fixing rod. The first sensor fixing rod is installed on the walking trolley, and the second sensor fixing rod and the third sensor fixing rod are installed on one side of the second support seat through the sensor connecting rod, and the second sensor fixing rod and the third sensor fixing rod are both vertically installed on the sensor connecting rod.

[0016] As a further improvement of the present invention, the sensor group includes a guide rail front limit sensor installed on the front side of the wheelset guide rail, a guide rail rear limit sensor installed on the rear side of the wheelset guide rail, a lifting electric push rod lower limit sensor installed on the first sensor fixing rod, a lifting electric push rod upper limit sensor installed on the upper end of the first sensor fixing rod, a rotating disk left limit sensor installed on the second sensor fixing rod, a rotating disk right limit sensor installed on the third sensor fixing rod, a wheel axle axle sensing sensor installed in the slot, a vehicle weight sensor installed between the third support seat and the output end of the rotary reducer, a trolley speed sensor installed on the transmission gear, a trolley front end sensing sensor installed on the front side of the third support seat, a trolley rear end sensing sensor installed on the rear side of the third support seat, and a trolley unloading position sensor installed at the unloading position.

[0017] As a further improvement of the present invention, the device has a manual operation panel, which is connected to the PLC controller through a signal transmission line, and is provided with a forward button, a backward button, an up button, a down button, a right turn button and a left turn button.

[0018] As a further improvement of the present invention, the device also includes a host computer, which is connected to the PLC controller.

[0019] As a further improvement of the present invention, the connection method between the host computer and the PLC controller adopts RS-485 serial port, Ethernet port and wireless Wi-Fi communication interface at the same time.

[0020] As a further improvement of the present invention, the device also has an electric control cabinet, the PLC controller is installed in the electric control cabinet, the PLC controller is respectively connected to the power indicator light, the travel indicator light, the fault indicator light and the buzzer through signal transmission lines, and the power indicator light, the travel indicator light, the fault indicator light and the buzzer are installed on the cabinet door of the electric control cabinet.

[0021] As a further improvement of the present invention, the PLC controller has an industrial control instruction set, and the host computer inputs instructions to control the operation of the device.

[0022] The beneficial effects of the present invention are:

[0023] (1) It can meet the needs of axle transmission with different track gauges and change the direction of axle transmission.

[0024] (2) The trolley is driven by the rotation of pin gears. The driving output force is directly applied to the foundation, preventing the trolley from slipping during startup or travel, thereby improving stability. Furthermore, the flatness requirements of the track installation foundation are not high, making construction simple. Furthermore, the gears are processed using a flat wire cutting process, and the pin shafts are processed using a seamless steel pipe set method. This can significantly reduce manufacturing costs and subsequent maintenance costs.

[0025] (3) The wheelset movement is achieved by the "lifting method". The wheelset does not touch the guide rail when moving, and there is no need to change the track due to different track gauges. It can be applied to the movement of wheelsets of various track sizes. During the transportation process, there is no need for the wheelset to run on the track, which can greatly save construction costs.

[0026] (4) It is equipped with a wheelset rotation device, which is completed by a "right-angle shaft reducer". The wheelset can rotate 360 degrees in the horizontal plane, change direction, and complete transportation in any direction by moving the trolley; it realizes the multi-purpose use of one machine and saves manufacturing costs.

[0027] (5) In order to ensure the linearity of the trolley's movement, a V-shaped guide block is provided on the guide rail, and the V-shaped guide block is located below the guide rail. The trolley fits the guide rail to ensure that the trolley runs along the rail direction.

[0028] (6) The guide rail base is equipped with a guide rail centering adjustment and fastening unit. This allows for quick adjustment and fastening of the guide rail assembly. This eliminates the need for pre-buried anchor bolts, significantly saving construction time and costs.

[0029] (7) PLC control has a high degree of automation and executes actions through variable programs; it has intelligent judgment and can automatically control the output device according to the signals sent back by various sensors; the communication interface uses: the PLC itself has an RS-485 serial port, an extended Ethernet module, an additional Ethernet interface, and a wireless Wi-Fi communication interface, which can be connected to a host computer or networked with other devices to transmit data.

[0030] (8) The device has a built-in control instruction set, and an external controller can control the device remotely and locally through the network. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] The accompanying drawings, which constitute part of this application, are intended to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are intended to explain the present invention and do not constitute an undue limitation of the present invention. In the accompanying drawings:

[0032] Figure 1 It is a three-dimensional diagram of the present invention;

[0033] Figure 2 This is the main view of the present invention;

[0034] Figure 3 It is a side view of the present invention;

[0035] Figure 4 A top view of the present invention;

[0036] Figure 5 for Figure 3 Enlarged view of point A in the middle;

[0037] Figure 6 Schematic diagram of the fastening unit structure for centering and adjusting the trolley and guide rail;

[0038] Figure 7 A schematic diagram of circuit connections for the invention;

[0039] Figure 8 A state reference diagram is used for the present invention. DETAILED DESCRIPTION

[0040] It should be noted that, in the absence of conflict, the embodiments and features of the embodiments in this application can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0041] In order to enable those skilled in the art to better understand the present invention, the following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts should fall within the scope of protection of this application.

[0042] An automatic transport device for train axles that can adapt to multiple track gauges and change direction, comprising a wheelset guide rail 1 and a wheelset 2 disposed on the guide rail, a trolley 3, a trolley drive device, a wheelset lifting device, a wheelset rotating device, and a control system;

[0043] The traveling trolley 3 is composed of a base 3a and traveling wheels 3b arranged on the base 3a;

[0044] The trolley drive device includes a running guide rail unit and a drive unit. The running rail unit includes two guide rail bases 4 symmetrically and parallelly arranged below the wheel pair guide rail 1. The running wheels 3b run along the guide rail base 4. The guide rail base 4 is installed on a pad 5. A plurality of connecting rods 6 are installed between the two pads 5. The plurality of connecting rods 6 are evenly spaced along the length direction of the guide rail base 4. A pin sleeve 7 is fixed on the connecting rod 6. The drive unit includes a drive motor 8, a reducer 9 and a transmission gear 10. The drive motor 8 and the reducer 9 are both installed on the running trolley 3. The output end of the drive motor 8 is connected to the input end of the reducer 9. The output end of the reducer 9 is installed on the transmission gear 10. The transmission gear 10 is meshed with the pin sleeve 7.

[0045] The wheelset lifting device includes a first support base 11 and a lifting motor 12 mounted on the first support base 11. The first support base 11 is fixedly mounted on the base 3a. The output end of the lifting motor 12 has a lifting electric push rod 13.

[0046] The wheelset rotation device includes a rotary reducer 14, a second support seat 15 and a third support seat 16. The second support seat 15 is arranged at the upper end of the lifting electric push rod 13. The rotary reducer 14 is arranged on the second support seat 15 to complete the 360° rotation of the wheelset 2 in the lifting state and realize the transfer of the wheelset 2 in different directions. The output end of the rotary reducer 14 is provided. The third support seat 16 is provided with a card slot 17 for placing the wheelset 2;

[0047] The control system includes a PLC controller 18 and a sensor group. The sensor group obtains status information of the device. The PLC controller 18 is connected to the sensor group, the drive motor 8, the lifting motor 12 and the rotary reducer 14 through signal transmission lines. The PLC controller 18 receives and processes the status information from the sensor group and outputs control signals to the drive motor 8, the lifting motor 12 and the rotary reducer 14.

[0048] A V-shaped positioning block 19 is installed on the guide rail base 4. The V-shaped positioning block 19 is an angle iron welded to the guide rail base 4. The angle between the two sides of the angle iron is 90°.

[0049] It also includes a guide rail centering adjustment and fastening unit, which includes an adjustment screw 20, a locking nut 21 and a pressure block 22. The adjustment screw 20 passes through the pad 5 and is connected to the connecting rod 6. The adjustment screw 20 is provided with a locking nut 21, and a pressure block 22 is provided at one end of the adjustment screw 20.

[0050] The device also includes a first sensor fixing rod 23, a second sensor fixing rod 24 and a third sensor fixing rod (not shown in the figure). The first sensor fixing rod 23 is installed on the walking trolley, and the second sensor fixing rod 24 and the third sensor fixing rod are installed on one side of the second support seat 15 through the sensor connecting rod 25, and the second sensor fixing rod 24 and the third sensor fixing rod are both vertically installed on the sensor connecting rod 25.

[0051] The sensor group includes a guide rail front limit sensor 26 installed on the front side of the wheelset guide rail 1, a guide rail rear limit sensor 27 installed on the rear side of the wheelset guide rail 1, a lifting electric push rod lower limit sensor 28 installed on the first sensor fixing rod 23, a lifting electric push rod upper limit sensor 29 installed on the upper end of the first sensor fixing rod 23, a rotating disk left limit sensor 30 installed on the second sensor fixing rod 24, a rotating disk right limit sensor 31 installed on the third sensor fixing rod, a wheel axle axle sensing sensor 32 installed in the slot 17, a vehicle load sensor 33 installed between the third support seat 16 and the output end of the rotary reducer 14, a trolley speed sensor 34 installed on the transmission gear 10, a trolley front end sensing sensor 35 installed on the front side of the third support seat 16, a trolley rear end sensing sensor 36 installed on the rear side of the third support seat 16, and a trolley unloading position sensor 38 installed at the unloading position 37.

[0052] The device has a manual operation panel 39, which is connected to the PLC controller 18 via a signal transmission line. The manual operation panel 39 is provided with a forward button, a backward button, an upward button, a downward button, a right turn button and a left turn button.

[0053] The device further includes a host computer 40 , which is connected to the PLC controller 18 .

[0054] The connection mode between the host computer 40 and the PLC controller 18 adopts: RS-485 serial port, Ethernet port and wireless Wi-Fi communication interface.

[0055] The device also has an electric control cabinet 41, and the PLC controller 18 is installed in the electric control cabinet 41. The PLC controller 18 is connected to the power indicator light, the travel indicator light, the fault indicator light and the buzzer through signal transmission lines. The power indicator light, the travel indicator light, the fault indicator light and the buzzer are installed on the cabinet door of the electric control cabinet 41.

[0056] The PLC controller 18 has an industrial control instruction set, and the host computer 40 inputs instructions to control the operation of the device.

[0057] PLC controller internal instruction protocol description:

[0058]

[0059]

[0060]

[0061] Note:

[0062] 1. "Chr(&H1B)" is the starting character in hexadecimal, corresponding to the character "esc" in the ASCII code table, and the decimal ASCII code is 27.

[0063] 2. "Chr(&HA)" is the hexadecimal end character, corresponding to the character "nl" in the ASCII code table, and the decimal ASCII code is 10.

[0064] 3. "Chr(&HD)" is the hexadecimal end character, corresponding to the character "cr" in the ASCII code table, and the decimal ASCII code is 13.

[0065] Working principle of the present invention:

[0066] 1. Manual operation mode

[0067] Manually click the forward button to move the trolley forward. Click the reverse button to move the trolley backward. Click the up button to raise the support base with the electric actuator. Click the down button to lower the support base with the electric actuator. Click the right turn button to rotate the motor to turn the support base right. Click the left turn button to rotate the motor to turn the support base left. In manual mode, pressing and holding the corresponding button will continue the control; releasing the button will stop the control. If the support base has bearings, the bearings can be moved accordingly.

[0068] The front and rear limits of the guide rails restrict the horizontal front and rear range of the trolley. The upper and lower limits of the electric push rod restrict the lifting range of the support base. The left and right limits of the rotating disk restrict the left and right rotation range of the support base.

[0069] 2. Automatic operation mode

[0070] Take the example of a trolley moving a bearing from the rear end to the front end.

[0071] (1) Click the Start button.

[0072] (2) Initialize the trolley and lower the support seat to the lower limit position of the lifting electric push rod. (This ensures that the trolley passes under the bearing. If the bearing is loaded on the trolley, it can also be unloaded on the bearing guide rail in place.)

[0073] (3) The trolley moves to the rear end. If it does not touch the rear limit of the guide rail, it will continue to move backward. Otherwise, it will stop. During the backward movement, the rear end sensor of the trolley senses the bearing, and the axle sensor of the wheel axle senses the axle of the wheel axle. The trolley slowly stops. At this time, the trolley support seat should be directly under the axle.

[0074] (4) The lifting motor drives the lifting electric push rod to drive the support base upward, lifting the axle directly above from the guide rail, leaving the guide rail about 10 cm, touching the upper limit of the lifting electric push rod, and stopping the lifting action. The load sensor collects the weight of the axle and displays it in real time through the digital display device, while transmitting the data back to the PLC register. The PLC can make an intelligent judgment based on the axle weight to determine whether it is not overweight and can be lifted and whether it can be driven.

[0075] (5) The PLC determines that the trolley can move with the wheel axle loaded, and controls the trolley to start moving forward along the guide rail. If it does not touch the front limit of the guide rail, it will continue to move forward, otherwise it will stop. When the front sensing sensor of the trolley senses the bearing in front, or the trolley unloading station sensor senses the unloading station, the trolley stops moving. The PLC controls the lifting motor to drive the lifting electric push rod to drive the support seat to descend, touch the lower limit of the lifting electric push rod, stop the descending action, and place the wheel axle on the guide rail. The transportation task of one wheel axle is completed.

[0076] (6) If multiple axles are being transported, the process automatically jumps to step 3 and repeats the process.

[0077] The foregoing description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that the present invention is susceptible to various modifications and variations. Any modifications, equivalent substitutions, improvements, component splits, or combinations, etc., that fall within the spirit and principles of the present invention, shall be included within the scope of protection of the present invention.

Claims

1. An automatic conveying device for train axles that can adapt to multiple track gauges and change direction, comprising a wheelset guide rail and a wheelset disposed on the guide rail, characterized in that: It also includes a traveling trolley, a trolley drive device, a wheelset lifting device, a wheelset rotating device and a control system; The traveling trolley is composed of a base and traveling wheels arranged on the base; The trolley drive device includes a running guide rail unit and a drive unit, the running guide rail unit includes two guide rail bases symmetrically and parallelly arranged below the wheel pair guide rails, the running wheels run along the guide rail bases, the guide rail bases are mounted on a pad, a plurality of connecting rods are mounted between the two pads, the plurality of connecting rods are evenly spaced along the length direction of the guide rail base, a pin shaft sleeve is fixed on the connecting rod, the drive unit includes a drive motor, a reducer and a transmission gear, the drive motor and the reducer are both mounted on the running trolley, the output end of the drive motor is connected to the input end of the reducer, the output end of the reducer is mounted on the transmission gear, and the transmission gear is meshed with the pin shaft sleeve; The wheelset lifting device comprises a first support base and a lifting motor mounted on the first support base, wherein the first support base is fixedly mounted on the base, and an output end of the lifting motor has a lifting electric push rod; The wheelset rotation device includes a rotary reducer, a second support seat and a third support seat, wherein the second support seat is arranged at the upper end of the lifting electric push rod, and the rotary reducer is arranged on the second support seat, for completing the 360° rotation of the wheelset in the lifting state, so as to realize the transfer of the wheelset in different directions, and the output end of the rotary reducer is provided, and the third support seat is provided with a card slot for placing the wheelset; The control system includes a PLC controller and a sensor group. The sensor group obtains status information of the train axle automatic transmission device. The PLC controller is connected to the sensor group, the drive motor, the lifting motor and the rotary reducer through signal transmission lines. The PLC controller receives and processes the status information from the sensor group and outputs control signals to the drive motor, the lifting motor and the rotary reducer.

2. The automatic conveying device for train axles that can adapt to multiple track gauges and change direction according to claim 1 is characterized in that: A V-shaped positioning block is installed on the guide rail base. The V-shaped positioning block is an angle iron welded to the guide rail base, and the angle between the two sides of the angle iron is 90°.

3. The automatic conveying device for train axles that can adapt to multiple track gauges and change direction according to claim 1 is characterized in that: It also includes a guide rail centering adjustment and fastening unit, which includes an adjustment screw, a locking nut and a pressure block. The adjustment screw is connected to the connecting rod after passing through the pad. The adjustment screw is provided with a locking nut, and a pressure block is provided at one end of the adjustment screw.

4. The automatic conveying device for train axles that can adapt to multiple track gauges and change direction according to claim 1 is characterized in that: The train axle automatic transmission device also includes a first sensor fixing rod, a second sensor fixing rod and a third sensor fixing rod. The first sensor fixing rod is installed on the traveling trolley, and the second sensor fixing rod and the third sensor fixing rod are installed on one side of the second support seat through a sensor connecting rod, and the second sensor fixing rod and the third sensor fixing rod are both vertically installed on the sensor connecting rod.

5. The automatic conveying device for train axles that can adapt to multiple track gauges and change direction according to claim 4 is characterized in that: The sensor group includes a guide rail front limit sensor installed on the front side of the wheelset guide rail, a guide rail rear limit sensor installed on the rear side of the wheelset guide rail, a lifting electric push rod lower limit sensor installed on the first sensor fixing rod, a lifting electric push rod upper limit sensor installed on the upper end of the first sensor fixing rod, a rotating disk left limit sensor installed on the second sensor fixing rod, a rotating disk right limit sensor installed on the third sensor fixing rod, a wheel axle axle sensing sensor installed in the slot, a vehicle weight sensor installed between the third support seat and the output end of the rotary reducer, a trolley speed sensor installed on the transmission gear, a trolley front end sensing sensor installed on the front side of the third support seat, a trolley rear end sensing sensor installed on the rear side of the third support seat, and a trolley unloading position sensor installed at the unloading position.

6. The automatic conveying device for train axles that can adapt to multiple track gauges and change direction according to claim 5 is characterized in that: The train axle automatic transmission device has a manual operation panel, which is connected to the PLC controller through a signal transmission line. The manual operation panel is provided with a forward button, a backward button, an upward button, a downward button, a right turn button and a left turn button.

7. The automatic conveying device for train axles that can adapt to multiple track gauges and change direction according to claim 5 is characterized in that: The train axle automatic transmission device also includes a host computer, which is connected to the PLC controller.

8. The automatic conveying device for train axles that can adapt to multiple track gauges and change direction according to claim 7 is characterized in that: The connection between the host computer and the PLC controller adopts RS-485 serial port, Ethernet port and wireless Wi-Fi communication interface at the same time.

9. The automatic conveying device for train axles that can adapt to multiple track gauges and change direction according to claim 1 is characterized in that: The train axle automatic transmission device also has an electric control cabinet, in which the PLC controller is installed. The PLC controller is connected to a power indicator light, a travel indicator light, a fault indicator light and a buzzer through signal transmission lines. The power indicator light, the travel indicator light, the fault indicator light and the buzzer are installed on the door of the electric control cabinet.

10. The automatic conveying device for train axles that can adapt to multiple track gauges and change direction according to claim 7, characterized in that: The PLC controller has an industrial control instruction set, and the host computer inputs instructions to control the operation of the train axle automatic transmission device.

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