A locking protection method for steel wheel / rack rail locomotive track climbing transition area

Abstract

The present invention belongs to the technical field of coal mine transportation equipment, and provides a locking protection method for the climbing transition area of ​​a steel wheel / rack rail locomotive track, comprising dividing the locomotive climbing transition area track into a deceleration area below the slope, a transition area below the slope, and a mode conversion area below the slope, a slope track area, and a mode conversion area above the slope, a transition area above the slope, and a deceleration area above the slope; and setting RFID beacon points at the critical points of the different areas; dual-point RFID beacons are set at the critical points at both ends of the mode conversion area below the slope and the mode conversion area above the slope respectively; at the same time, track blockers are set in the horizontal lane above the slope and the horizontal lane below the slope before entering the ramp track; the locomotive operation process is accurately positioned by using RFID beacon reading, and a drive mode switching command is sent according to the beacon signal, and a locking linkage is established between the RFID beacon signal in the forward direction and the locomotive drive mode and the track blocker; the method of the present invention effectively ensures that the drive mode of the locomotive is consistent with the track type in the forward direction, ensuring the safe and reliable operation of the locomotive.

Description

Technical Field

[0001] The present invention belongs to the technical field of coal mine transportation equipment, and relates to a steel wheel / rack rail locomotive, and in particular to a locking protection method for a steel wheel / rack rail locomotive track climbing transition area. Background Art

[0002] Auxiliary transportation systems for underground coal mines are one of the most important systems in coal mines. Currently, there are three main types of auxiliary transportation systems in my country: trackless rubber-tyred systems, ground rail systems, and monorail systems. Of these, ground rail systems and monorail systems are widely used in North China and central my country.

[0003] In the ground rail system, it is divided into a conventional ground rail transportation system and a rack rail and card rail transportation system with a rack rail.

[0004] The conventional underground rail system is driven in a similar way to ground trains, using the adhesion between steel wheels and rails to achieve locomotive traction and transportation. It features high speed, large transport capacity, and low track costs. It accounts for a very high proportion of domestic underground rail systems, but its climbing ability is weak, with a maximum climbing ability of only 2 degrees, which cannot meet the fault climbing conditions in coal mines.

[0005] The rack-and-rail transport system uses a set of gears to mesh with the rack in the middle of the track to achieve greater traction output. At the same time, there are flanged plates on both sides of the track to prevent the locomotive from derailing during climbing. It has the characteristics of a large climbing angle and strong load capacity. However, during long-distance transportation, the locomotive speed is slow and the track cost is high, which cannot meet the requirements of ultra-long-distance continuous transportation in coal mines.

[0006] Based on the above problems, a steel wheel / cog rail locomotive came into being. It is able to use a conventional rail in a horizontal tunnel through a steel wheel drive mode (such as Figure 5 As shown), in the climbing tunnel, the rack rail is used through the gear drive mode (as shown Figure 4 Because the transport equipment has different drive modes in different areas, a climbing transition zone is required at the top and bottom of the slope. In this zone, the locomotive needs to switch between different drive modes to adapt to the different track types. Summary of the Invention

[0007] The purpose of the present invention is to provide a locking protection method for the climbing transition area of ​​a steel wheel / rack rail locomotive track, which can ensure that the driving mode of the locomotive is consistent with the track type in the forward direction, ensuring the safe and reliable operation of the locomotive.

[0008] The technical solution adopted by the present invention to achieve the above-mentioned purpose is:

[0009] A locking protection method for a steel wheel / rack rail locomotive track climbing transition area comprises the following steps:

[0010] S1. Divide the locomotive track into zones: divide the locomotive track into a deceleration zone below the slope, a transition zone below the slope, and a mode conversion zone below the slope, a slope track zone, and a mode conversion zone above the slope, a transition zone above the slope, and a deceleration zone above the slope;

[0011] S2. Setting RFID beacon points: Setting RFID beacon points at the critical points of the different areas described in S1; setting dual-point RFID beacons at the critical points at both ends of the mode conversion area below the ramp and the mode conversion area above the ramp;

[0012] S3. Install track blockers: Install track blockers in the horizontal lane above the ramp and the horizontal lane below the ramp before entering the ramp track;

[0013] S4. Use RFID beacon reading to accurately locate the locomotive during operation, and send a drive mode switching command based on the beacon signal. At the same time, establish a locking linkage between the forward direction RFID beacon signal and the locomotive drive mode.

[0014] Furthermore, the track blocker is interlocked with the locomotive drive mode, that is, when the locomotive passes through the RFID beacon points set at both ends of the ramp track area, the locomotive drive mode signal is sent to the track blocker. When the locomotive drive mode is the gear drive mode, the track blocker opens and the locomotive can pass normally; when the locomotive drive mode is the steel wheel drive mode, the track blocker does not operate, ensuring that the locomotive cannot enter the ramp track and preventing the risk of the locomotive slipping.

[0015] Furthermore, the signal is sent using wireless communication.

[0016] Furthermore, the locking linkage between the forward direction RFID beacon signal and the locomotive driving mode in S4 includes:

[0017] The locomotive is running in the mode conversion area below the slope or the mode conversion area above the slope, and the locomotive is in gear drive mode:

[0018] When the locomotive leaves the mode transfer area below the slope or the mode transfer area above the slope:

[0019] At the RFID beacon point inside the area, the locomotive driving mode is judged. If it does not meet the driving mode requirements, an alarm prompt is issued, a locomotive return command is sent, and the driving mode is switched;

[0020] Or continue driving and stop at the RFID beacon point outside the area, and the forward command cannot be executed, and only the reverse command can be executed;

[0021] When the locomotive enters the mode transfer area below the slope or the mode transfer area above the slope:

[0022] When passing the RFID beacon point outside the area, the locomotive's running speed is judged and a prompt is given to enter the mode conversion area. Pay attention to stopping and switching the driving mode. If the locomotive is running too fast, it will be forced to stop.

[0023] When passing the RFID beacon point in the area, you will be prompted to enter the mode conversion area. Remember to stop and switch the driving mode.

[0024] When the locomotive is running on a slope track area, the locomotive is in gear drive mode and switching drive modes is prohibited;

[0025] In the ramp track area, the gear drive mode is maintained in the parking state, and the gear drive clutch is automatically forced to engage when the power is turned on;

[0026] In the slope track area, when starting the locomotive, a power-on test is performed to determine whether it is in the climbing state;

[0027] In the slope track area, the locomotive is required to limit the maximum operating speed to 0.75m / s.

[0028] The locomotive is running in the deceleration zone and is in steel wheel drive mode. When the locomotive enters the RFID beacon point in the deceleration zone, the locomotive is forced to decelerate. The deceleration rate can be a fixed value. When the locomotive leaves the RFID beacon point in the deceleration zone, the required low speed requirement is met. If the locomotive does not reach the low speed requirement when leaving the RFID beacon point in the deceleration zone due to excessive load, a second deceleration is forced. During deceleration, the feedback value is adjusted to the maximum, and sand spreading is performed. When the speed reaches the requirement, deceleration is stopped.

[0029] The locomotive runs in the transition area, where transition rails connecting ordinary rails and rack rails are arranged. The locomotive runs freely on the two running tracks.

[0030] The beneficial effects of the present invention are:

[0031] Ensure that the drive mode of the steel wheel / cog rail locomotive is consistent with the track type in the forward direction, that is, the standard track adopts the steel wheel drive mode, and the rack rail track adopts the gear drive mode;

[0032] When the driving mode of the steel wheel / rack rail locomotive does not match the track type in the forward direction, the locomotive can only move backward and cannot move forward, and an alarm will be issued; at the same time, track blockers are installed in the horizontal lanes above the ramp and below the ramp before entering the ramp track and cannot be opened to ensure the safe and reliable operation of the locomotive. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1This is a diagram of the transition area of ​​track climbing for a steel wheel / rack locomotive according to the present invention;

[0034] Figure 2 This is a schematic diagram of the transition structure of the intermediate rack engagement of the transition rail in the present invention;

[0035] Figure 3 This is a schematic diagram of the drive mode switching and electrical locking principle of the steel wheel / rack locomotive of the present invention;

[0036] Figure 4 This is a schematic diagram of the operation structure of the steel wheel / rack locomotive gear drive mode;

[0037] Figure 5 This is a schematic diagram of the operation structure of the steel wheel / cog locomotive steel wheel drive mode;

[0038] In the figure, 1. deceleration zone below the ramp; 2. transition zone below the ramp; 3. mode conversion zone below the ramp; 4. ramp track zone; 5. mode conversion zone above the ramp; 6. transition zone above the ramp; 7. deceleration zone above the ramp; 8. 30kg track; 9. rack rail track; 10. transition rail; 11. drive mode switching control cylinder; 12. steel wheel brake cylinder; 13. gear brake cylinder; 14. logic controller; 15. RFID reader; 16. Zigbee wireless communication; 17. steel wheel drive transmission chain; 18. gear drive transmission chain; 19. steel wheel disengaged state; 20. gear engaged state; 21. steel wheel engaged state; 22. gear disengaged state. DETAILED DESCRIPTION

[0039] The present invention will be further described below with reference to the embodiments and accompanying drawings:

[0040] A locking protection method for a steel wheel / rack rail locomotive in a climbing transition area comprises the following steps:

[0041] S1. Divide the track climbing transition area of ​​the locomotive into regions, such as Figure 1 As shown, the track climbing transition area of ​​the locomotive is divided into a deceleration area 1 below the slope, a transition area 2 below the slope, and a mode conversion area 3 below the slope, a slope track area 4, and a mode conversion area 5 above the slope, a transition area 6 above the slope, and a deceleration area 7 above the slope;

[0042] S2. Setting RFID beacon points: Setting RFID beacon points at the critical points of the different areas described in S1; wherein, dual-point RFID beacons are set at the critical points of the mode conversion area below the ramp and the mode conversion area above the ramp respectively; Figure 1 As shown, RFID beacons are installed at eight locations: A1, B1, C1, D1, A2, B2, C2, and D2;

[0043] S3. Install track blockers: track blockers are installed in the horizontal lanes above the ramp and below the ramp before entering the ramp track. The track blocker is a standard product on the market. Its control switch is connected to a wireless communication receiver for interlocking with the locomotive. The track blocker is interlocked with the locomotive drive mode in the following manner: when the locomotive passes through the RFID beacon point B1 or B2 installed at both ends of the ramp track area, the locomotive drive mode signal is sent to the track blocker. When the locomotive drive mode is the gear drive mode, the track blocker opens and the locomotive can pass normally. When the locomotive drive mode is the steel wheel drive mode, the track blocker does not operate. The track blocker ensures that the locomotive cannot enter the ramp track, preventing the risk of the locomotive slipping.

[0044] S4. Use RFID beacon reading to accurately locate the locomotive during operation, and use wireless communication to send a drive mode switching command based on the beacon signal. At the same time, establish a locking linkage between the forward direction RFID beacon signal and the locomotive drive mode.

[0045] The locking linkage between the forward direction RFID beacon signal and the locomotive drive mode includes:

[0046] 1. The locomotive runs in the mode conversion area A1 to B1 below the slope or the mode conversion area A2 to B2 above the slope. This area is a rack track, and the steel wheel / rack locomotive is in gear drive mode:

[0047] When the locomotive leaves the mode change zone A1 to B1 below the slope or the mode change zone A2 to B2 above the slope:

[0048] At the RFID beacon point inside the mode conversion area, the locomotive drive mode is judged. If it does not meet the drive mode requirements, an alarm prompt is issued, a locomotive return command is sent, and the drive mode is switched;

[0049] Alternatively, instead of continuing to drive, the vehicle may be parked and locked at the RFID beacon point outside the mode conversion area, and the forward command cannot be executed, and only the reverse command can be executed;

[0050] When the locomotive enters the mode conversion area A1 to B1 below the slope or the mode conversion area A2 to B2 above the slope:

[0051] When passing the RFID beacon point outside the mode conversion area, the locomotive's running speed is judged and a prompt is given to enter the mode conversion area. Pay attention to stop and execute the drive mode switching command. If the locomotive is running too fast, it will be forced to stop, the feedback value will be adjusted to the maximum, and sand spreading will be carried out.

[0052] When passing the RFID beacon point in the mode conversion area, you will be prompted to enter the mode conversion area. Remember to stop and execute the drive mode switching command.

[0053] 2. The locomotive is running in the ramp track area B1 to B2. The locomotive is in gear drive mode. Switching the drive mode is prohibited in this area.

[0054] In the ramp track area from B1 to B2, the gear drive mode is maintained in the parking state, and the gear drive clutch is forced to engage automatically when the power is turned on;

[0055] In the ramp track area B1 to B2, when starting the locomotive, a power-on test is performed to determine whether it is in the climbing state;

[0056] In the ramp track area from B1 to B2, the locomotive is required to limit the maximum operating speed to 0.75m / s.

[0057] 3. The locomotive runs in the deceleration zone C1 to D1 below the slope or the deceleration zone C2 to D2 above the slope. This area is a 30kg ordinary ground rail track 8. The locomotive is in steel wheel drive mode. When the locomotive enters the deceleration zone C1 or C2 RFID beacon point from high speed, the locomotive is forced to decelerate. The deceleration rate can be a fixed value. When the locomotive leaves the deceleration zone D1 or D2 RFID beacon point, the required low speed requirement is reached. If the locomotive leaves the deceleration zone D1 or D2 RFID beacon point due to excessive load and the speed does not meet the low speed requirement or is still too high, a second deceleration is forced. During deceleration, the feedback value is adjusted to the maximum and sand spreading is performed. When the speed reaches the requirement, the deceleration can be cancelled.

[0058] 4. The locomotive runs in the transition area D1 to A1 below the slope or the transition area D2 to A2 above the slope. The transition area is arranged with a transition rail 10 connecting the 30kg ordinary ground rail 8 and the rack rail 9. Figure 2 As shown, the running track type transitions, and the middle rack of the transition rail 10 engages and transitions, so that the locomotive can run freely on the two running tracks.

[0059] The driving mode switching and electrical locking linkage principle, such as Figure 3 As shown, P and T represent the pressure oil port and the return oil port in the hydraulic system of the drive mode switching control cylinder 11 respectively; Y1, Y2, Y3, and Y4 represent the four electromagnets in the solenoid valve respectively; X1, X2, X3, and X4 represent the electrical travel switches triggered when the four cylinders are extended and retracted.

[0060] When the locomotive is in the parking state, the four electromagnets Y1, Y2, Y3, and Y4 are inactive, and the two three-position four-way solenoid valves are in the middle position: the drive mode switching control cylinder 11 is in the retracted position, and the steel wheel and gear are both disengaged; the steel wheel brake cylinder 12 and the gear brake cylinder 13 remain in the extended state, and the steel wheel and gear are in the braking mode; the start lock signal is not output, the locomotive cannot be started, and is in the parking state;

[0061] When the locomotive is in the steel wheel drive mode, the logic controller 14 controls the output of the Y2 and Y4 signals to activate the Y2 and Y4 electromagnets, thereby extending the steel wheel drive side switching control cylinder and engaging the steel wheel drive side clutch to realize the steel wheel power transmission; at the same time, the steel wheel brake cylinder 12 contracts, releasing the steel wheel brake and allowing the steel wheel to run freely;

[0062] When it is detected that the X2 and X4 signals are closed and the X1 and X3 signals are disconnected, the start blocking signal is allowed to be output, and the locomotive can be started normally in the steel wheel drive mode;

[0063] When the locomotive is in gear drive mode, the logic controller 14 controls the output of Y1 and Y3 signals to activate the Y1 and Y3 electromagnets, thereby extending the gear drive side switching control cylinder and engaging the gear drive side clutch to achieve gear power transmission; at the same time, the gear brake cylinder 13 contracts, releasing the gear brake and allowing the gear to run freely.

[0064] When it is detected that the X1 and X3 signals are closed and the X2 and X4 signals are disconnected, the start blocking signal is allowed to be output, and the locomotive can be started normally in the gear drive mode;

[0065] When the locomotive is in the mode conversion area and the locomotive signal is locked:

[0066] like Figure 1 and Figure 3 As shown, when the locomotive runs to B1 or B2, the RFID card reader 15 detects the B1 or B2 signal and determines the locomotive's own drive mode: if it is a steel wheel drive mode, that is, the Y2 and Y4 signals are output, the X2 and X4 signals are closed, and the X1 and X3 signals are disconnected, then it is determined that the locomotive drive mode does not meet the requirements. At this time, the locomotive is forced to stop, the Y2 and Y4 signals are disconnected, and the X2 and X4 signals are disconnected. At the same time, the locomotive can be operated in the reverse direction and cannot run forward and enter the ramp environment; if it is a gear drive mode, that is, the Y1 and Y3 signals are output, the X1 and X3 signals are closed, and the X2 and X4 signals are disconnected, then it is determined that the locomotive drive mode meets the requirements. At this time, the locomotive does not stop and remains in operation. At the same time, a status signal is sent to the outside through the ZigBee wireless communication 16 to open the track blockers at positions E1 and E2 to ensure that the locomotive can pass smoothly to the ramp.

Claims

1. A locking protection method for a steel wheel / rack rail locomotive track climbing transition area, characterized by: The steps include: S1. Divide the locomotive track into zones: the locomotive track is divided into a deceleration zone below the slope, a transition zone below the slope, and a mode conversion zone below the slope; a ramp track zone; and an upper mode conversion zone, an upper transition zone, and a deceleration zone above the slope. Transition rails connecting the ordinary track and the rack rail are arranged in the lower transition zone and the upper transition zone. S2. Setting RFID beacon points: Setting RFID beacon points at the critical points of different areas in S1; setting dual-point RFID beacons at the critical points at both ends of the mode conversion area below the ramp and the mode conversion area above the ramp; S3. Setting track blockers: Track blockers are set in the horizontal lanes above the ramp and below the ramp before entering the ramp track. The track blockers are linked to the locomotive drive mode interlock, that is, when the locomotive passes the RFID beacon points set at both ends of the ramp track area, the locomotive drive mode signal is sent to the track blocker. When the locomotive drive mode is gear drive mode, the track blocker opens and the locomotive can pass normally; when the locomotive drive mode is steel wheel drive mode, the track blocker does not operate, ensuring that the locomotive cannot enter the ramp track and preventing the risk of the locomotive slipping; S4. Use RFID beacon reading to accurately locate the locomotive during operation, and send a drive mode switching command based on the beacon signal. At the same time, establish a locking linkage between the forward direction RFID beacon signal and the locomotive drive mode.

2. The locking protection method for a steel wheel / rack rail locomotive track climbing transition area according to claim 1, characterized in that: The signal is sent by wireless communication.

3. The locking protection method for a steel wheel / rack rail locomotive track climbing transition area according to claim 1, characterized in that: The execution of the locking linkage between the forward direction RFID beacon signal and the locomotive driving mode in S4 includes: (1) The locomotive is running in the mode conversion area below the slope or the mode conversion area above the slope, and the locomotive is in gear drive mode: When the locomotive leaves the mode transfer area below the slope or the mode transfer area above the slope: At the RFID beacon point inside the area, the locomotive driving mode is judged. If it does not meet the driving mode requirements, an alarm prompt is issued, a locomotive return command is sent, and the driving mode is switched; Or continue driving and stop at the RFID beacon point outside the area, making it impossible to execute the forward command and only the reverse command can be executed; When the locomotive enters the mode transfer area below the slope or the mode transfer area above the slope: When passing the RFID beacon point outside the area, the locomotive's running speed is judged and a prompt is given to enter the mode conversion area. Pay attention to stopping and switching the driving mode. If the locomotive is running too fast, it will be forced to stop. When passing through the RFID beacon point in the area, it will prompt you to enter the mode conversion area, and you should pay attention to stop and switch the driving mode; (2) When the locomotive is running on a slope track area, the locomotive is in gear drive mode and switching the drive mode is prohibited; In the ramp track area, the gear drive mode is maintained in the parking state, and the gear drive clutch is forced to engage automatically when the power is turned on; In the slope track area, when starting the locomotive, a power-on test is performed to determine whether it is in the climbing state; In the slope track area, the locomotive is required to limit the maximum operating speed to 0.75m / s. (3) The locomotive is running in the deceleration zone. The locomotive is in steel wheel drive mode. When the locomotive enters the RFID beacon point in the deceleration zone, the locomotive is forced to decelerate. The deceleration rate can be a fixed value. When the locomotive leaves the RFID beacon point in the deceleration zone, the required low speed requirement is met. If the locomotive does not meet the low speed requirement when leaving the RFID beacon point in the deceleration zone due to excessive load, a second deceleration is forced. During deceleration, the feedback value is adjusted to the maximum, and sand spreading is performed. When the speed reaches the requirement, deceleration stops. (4) The locomotive runs in the transition zone, the running track type transitions, the middle rack of the transition rail engages the transition, and the locomotive runs freely on the two running tracks.

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