A rack railway train entry tooth transition control method, system and device

Abstract

The present application relates to the technical field of mountain (toothed rail) track transportation engineering equipment, and particularly relates to a toothed rail train entry tooth transition control method, system and equipment. The present application controls the running state of the toothed rail train by monitoring the pre-set transponder, and pre-accelerates the gear motor in advance, so as to realize that the wheel rail-toothed rail transition device ensures the gear train speed of the toothed rail train to safely and smoothly enter the meshing adjustment section from the wheel rail section under the condition of canceling the speed difference adjustment section.

Description

Technical Field

[0001] This invention relates to the field of mountain (cogwheel) rail transit engineering equipment technology, and in particular to a cogwheel train tooth entry transition control method, system and equipment. Background Technology

[0002] Cogwheel rail transit is a rail transit system suitable for short-to-medium distance, low-volume passenger transport in mountainous areas. Compared to traditional rail transit systems, its significant feature is the presence of a rack or stepped toothed track running parallel to the rails, with corresponding gears mounted on the bogie axles. When vehicles travel on steep gradients, the meshing force between the gears and the rack overcomes the insufficient adhesion between the wheels and rails. With its strong climbing ability, cogwheel rail transit is particularly suitable for mountain tourism transportation, thus possessing broad application and development prospects.

[0003] The wheel-rail to rack-rail transition device serves as a smooth transition for trains from wheel-rail sections to rack-rail sections, while also preventing the train from being raised and causing derailment. Currently, the Strub rack-rail system is widely used in rack-rail test lines and rack-rail railways under construction in my country, and the wheel-rail to rack-rail transition devices all adopt a three-stage buffer-type gear entry device. For example, the three-stage buffer-type gear entry device described in patent 201810065846.1 mainly consists of a speed difference adjustment section, a meshing adjustment section, and a meshing correction section. When the train is running on the sticky section, the gear motor is a section gear with a zero rotational speed. During the gear engagement process, the gear adjusts its linear speed to be the same as the steel wheel through friction with the speed difference adjustment section of the wheel-rail-gear transition device. This allows the gear to maintain the linear speed of the steel wheel when entering the meshing adjustment section, achieving the optimal gear engagement state. However, due to factors such as installation errors of the speed difference adjustment section equipment and gears, the force between the speed difference adjustment section and the gear is unbalanced. As a result, the gear does not reach the linear speed of the steel wheel after passing through the speed difference adjustment section. This affects the function of the meshing adjustment section and meshing correction section in adjusting and correcting the meshing of the gear and the gear rail, ultimately leading to the gear hitting the tooth after entering the gear rail section, affecting train operation safety.

[0004] Therefore, when optimizing the wheel-rail to rack train transition device, how to ensure that the linear speed of the rack train gears is equal to the speed of the rack train and that it can safely and smoothly enter the meshing adjustment section from the wheel-rail section, and achieve accurate meshing between the gears and the rack, is a technical problem that urgently needs to be solved by technicians in this field. Summary of the Invention

[0005] The purpose of this invention is to overcome the problem in the prior art of ensuring that the linear speed of the gears of the rack train can safely and smoothly enter the meshing adjustment section from the wheel-rail section when the speed difference adjustment section is cancelled, and to provide a rack train gear entry transition control method, system and equipment.

[0006] To achieve the above-mentioned objectives, the present invention provides the following technical solution:

[0007] A method for controlling the tooth entry transition of a rack train includes the following steps:

[0008] S1: Monitor the advance transponder information received by the train; the advance transponder information includes the target speed of the gear tooth entry;

[0009] S2: The train controls its running speed according to the target speed of the gear entry in the advance transponder information, and sends gear control commands to the gear motor;

[0010] S3: The gear motor starts according to the gear control command and rotates to the target speed for gear entry;

[0011] S4: After the train receives the transponder information, the relative distance between the train and the transponder is obtained in real time;

[0012] S5: Based on the relative distance, when the train enters the target position, the gear motor drive is turned off, and the gear motor rotates inertial mode.

[0013] S6: After the train has fully entered the rack rail section, the gear motor drive is started to realize the rack rail train entering the rack.

[0014] As a preferred embodiment of the present invention, the advance warning transponder is disposed at the connection between the adhesive section and the rack section.

[0015] As a preferred embodiment of the present invention, the advance transponder information includes an advance transponder identification code; the train determines the transponder as an advance transponder based on the advance transponder identification code.

[0016] As a preferred embodiment of the present invention, the transponder information includes a transponder identification code; the train determines the transponder as a transponder based on the transponder identification code.

[0017] As a preferred embodiment of the present invention, step S4 calculates the relative distance between the train and the transponder by detecting the number of rotations of the train's wheels.

[0018] As a preferred embodiment of the present invention, step S5 includes the following steps:

[0019] The determination is made based on the relative distance S;

[0020] When S≥L i +S0-S 安 Turn off the drive of the i-th gear motor, causing the i-th gear motor to rotate inertial mode;

[0021] Among them, Li Si is the distance from the transponder reader of the train to the i-th gear; S0 is the distance from the actuator transponder to the gear engagement device; Si 安 This is a preset safety margin.

[0022] As a preferred embodiment of the present invention, the criterion for determining whether the train has fully entered the rack rail section in step S6 is:

[0023] S≥S0+L 列 +L 入 ,

[0024] Wherein, S is the relative distance; S0 is the distance from the transponder to the tooth transition device; L 列 L is the length of the train. 入 The length of the tooth transition device.

[0025] A gear train tooth entry transition control system for performing any of the above methods;

[0026] The system includes: a transponder array, a transponder reader, a speed sensor, an onboard safety computer, and a TCMS;

[0027] The transponder group includes a warning transponder and an execution transponder; the warning transponder is located at the connection between the adhesive section and the rack and pinion section; the execution transponder is located in the adhesive section;

[0028] The transponder reader is installed under the train and can receive the signal reflected by the transponder group when the train passes the transponder group;

[0029] The speed sensor is located at the wheel and is used to detect the number of wheel rotations.

[0030] The onboard safety computer is installed on the train and is used to calculate the position of the train based on the data from the speed sensor, and to control the TCMS.

[0031] The TCMS is used to control the working state of the gear motor according to the instructions of the on-board safety computer.

[0032] In a preferred embodiment of the present invention, the position of the transponder satisfies:

[0033] S0≥V0*t 反 ,

[0034] Where S0 is the distance between the executing transponder and the junction of the adhesive section and the toothed track section; V0 is the target speed of tooth entry recorded by the advance transponder, t 反 Let be the response time of the control system.

[0035] A gear train tooth entry transition control device includes at least one processor and a memory communicatively connected to the at least one processor; the memory stores instructions executable by the at least one processor, which, when executed by the at least one processor, enable the at least one processor to perform any of the methods described above.

[0036] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0037] This invention controls the operation of the rack train by monitoring a pre-set transponder and pre-accelerates the gear motor in advance, thereby ensuring that the rack train's gear linear speed is equal to the gear train speed when the speed difference adjustment section is cancelled, so that the wheel-rail to rack train transition device can safely and smoothly enter the meshing adjustment section from the wheel-rail section. Attached Figure Description

[0038] Figure 1 This is a schematic flowchart of a tooth entry transition control method for a rack train according to Embodiment 1 of the present invention;

[0039] Figure 2 This is a schematic diagram of the gear train tooth entry transition control system according to Embodiment 3 of the present invention;

[0040] Figure 3 This is a schematic diagram illustrating the execution of a gear train tooth entry transition control system according to Embodiment 4 of the present invention;

[0041] Figure 4 This is a schematic diagram of the structure of a gear train tooth entry transition control device according to Embodiment 5 of the present invention, which utilizes the gear train tooth entry transition control method described in Embodiment 1. Detailed Implementation

[0042] The present invention will be further described in detail below with reference to experimental examples and specific embodiments. However, this should not be construed as limiting the scope of the above-mentioned subject matter of the present invention to the following embodiments; all technologies implemented based on the content of the present invention fall within the scope of the present invention.

[0043] Example 1

[0044] like Figure 1 As shown, a method for controlling the tooth entry transition of a rack train includes the following steps:

[0045] S1: Monitor the advance transponder information received by the train; the advance transponder information includes the target speed of the gear tooth entry;

[0046] S2: The train controls its running speed according to the target speed of the gear entry in the advance transponder information, and sends gear control commands to the gear motor;

[0047] S3: The gear motor starts according to the gear control command and rotates to the target speed for gear entry;

[0048] S4: After the train receives the transponder information, the relative distance between the train and the transponder is obtained in real time;

[0049] S5: Based on the relative distance, when the train enters the target position, the gear motor drive is turned off, and the gear motor rotates inertial mode.

[0050] S6: After the train has fully entered the rack rail section, the gear motor drive is started to realize the rack rail train entering the rack.

[0051] Example 2

[0052] This embodiment is a specific implementation of the tooth entry transition control method for a rack train described in Embodiment 1, including the following steps:

[0053] S1: Monitor the advance transponder information received by the train; the advance transponder information includes the target speed of the gear tooth.

[0054] The advance warning transponder is installed at the connection between the adhesive section and the rack and pinion section. The advance warning transponder information includes an advance warning transponder identification code; the train identifies the transponder as an advance warning transponder based on the advance warning transponder identification code.

[0055] S2: The train controls its running speed according to the target speed of the gear tooth in the advance transponder information, and sends gear control commands to the gear motor.

[0056] S3: The gear motor starts according to the gear control command and rotates to the target speed for tooth entry.

[0057] S4: After the train receives the transponder information, the relative distance between the train and the transponder is obtained in real time.

[0058] The transponder information includes a transponder identification code; the train identifies the transponder as a transponder based on the transponder identification code. In this embodiment, the relative distance between the train and the transponder is calculated by detecting the number of wheel rotations.

[0059] The transponder information includes:

[0060] Serial number Variable name Explanation 1 NID Transponder number 2 NID_PACHET Execution packet identification code 3 Q_DIR Information valid when train is running forward 4 D_LEVELTR Approach point distance 5 V_STATIC Approach target speed

[0061] S5: Based on the relative distance, when the train enters the target position, the gear motor drive is turned off, allowing the gear motor to rotate inertial mode.

[0062] The determination is made based on the relative distance S;

[0063] When S≥L i +S0-S 安 Turn off the drive of the i-th gear motor, causing the i-th gear motor to rotate inertial mode;

[0064] Among them, L i Si is the distance from the transponder reader of the train to the i-th gear; S0 is the distance from the actuator transponder to the gear engagement device; Si 安 This is a preset safety margin.

[0065] S6: After the train has fully entered the rack rail section, the gear motor drive is started to realize the rack rail train entering the rack.

[0066] The criteria for determining whether the train has fully entered the rack track section are as follows:

[0067] S≥S0+L 列 +L 入 ,

[0068] Wherein, S is the relative distance; S0 is the distance from the transponder to the tooth transition device; L 列 L is the length of the train. 入 The length of the tooth transition device.

[0069] Example 3

[0070] A gear train tooth entry transition control system is provided for performing the method described in any of the above embodiments.

[0071] like Figure 2 As shown, the system includes: a transponder group, a transponder reader, a speed sensor, an onboard safety computer, and a TCMS (Train Control and Management System).

[0072] The transponder group includes a warning transponder and an execution transponder; the warning transponder is located at the connection between the adhesive section and the rack and pinion section; the execution transponder is located in the adhesive section.

[0073] The transponder reader is installed under the train and can receive the signal reflected by the transponder group when the train passes the transponder group.

[0074] The speed sensor is located at the wheel and is used to detect the number of wheel rotations.

[0075] The onboard safety computer is installed on the train and is used to calculate the train's position based on the data from the speed sensor, as well as to control the TCMS.

[0076] The TCMS is used to control the working state of the gear motor according to the instructions of the on-board safety computer.

[0077] Example 4

[0078] This embodiment is a specific experimental example of the tooth entry transition control system for a rack train described in Embodiment 3 executing the method described in Embodiment 2, as detailed below:

[0079] like Figure 3 As shown, during the gear train L101's entry into the gear section, the track is divided into an adhesion section, a transition section, and a gear train section. The adhesion section is equipped with two transponders: the first is a warning transponder B1, and the second is an execution transponder B2. The distance from B2 to the boundary between the adhesion and transition sections is S0. The onboard transponder readers are located at the front (D1) and rear (D2). The gear train consists of gears C1, C2, and C3. The distance between D1 and C1 is L1, the distance between D1 and C2 is L2, and the distance between D1 and C3 is L3. The length of the transition section is L. 入 .

[0080] Where S0≥V0*t 反 V0 is the target velocity of the tooth entry recorded by B1, t 反 The system response time is defined as the distance between B1 and B2 in this embodiment, which is the distance traveled in 5 seconds at the target tooth entry speed.

[0081] When the rack train L101 moves from the adhesive section to the rack section, when the transponder reader D1 reads the warning transponder B1, the onboard safety computer determines whether the train's running direction is consistent with the direction in the information in transponder B1. If they are consistent, it sends the start motor control commands C1, C2 and C3 and the gear motor rotation target speed information to the TCMS. If they are inconsistent, an alarm is triggered.

[0082] The onboard safety computer obtains the target speed information from the B1 transponder and controls the train to run to the target speed, sending the target speed of the drive motors of C1, C2 and C3 to the TCMS.

[0083] When the transponder reader D1 of the rack train L101 reads the warning transponder B2, the onboard safety computer obtains the B2 number, queries the B2 mileage information, and corrects the relative distance of train L101.

[0084] The onboard safety computer determines whether the train's direction of travel is consistent with the direction information in the B2 transponder. If they are inconsistent, an alarm is triggered, and control commands C1, C2, and C3 are sent to the TCMS to shut down the motor drive, causing the gears to idle. If they are consistent, the relative position S (relative to B2) is calculated using the vehicle speed sensor.

[0085] When S≥L1+S0-S 安 At that time, the onboard safety computer sends a control command to TCMS to shut down the motor drive via C1;

[0086] When S≥L2+S0-S 安 At that time, the onboard safety computer sends a C2 control command to the TCMS to shut down the motor drive;

[0087] When S≥L3+S0-S 安 At that time, the onboard safety computer sends a C3 control command to the TCMS to shut down the motor drive;

[0088] When S≥S0+L 列 +L 入 At that time, after train L101 has fully entered the rack rail section, the onboard safety computer sends a control command to shut down the wheel-rail motor drive, and sends the start motor control commands C1, C2 and C3 and gear motor rotation target speed information to the TCMS again, thus completing the rack rail train to enter the rack.

[0089] Example 5

[0090] like Figure 4 As shown, a rack train tooth entry transition control device includes at least one processor, a memory communicatively connected to the at least one processor, and at least one input / output interface communicatively connected to the at least one processor. The memory stores instructions executable by the at least one processor, which, when executed, enables the at least one processor to perform a rack train tooth entry transition control method as described in the foregoing embodiments. The input / output interface may include a display, keyboard, mouse, and USB interface for inputting and outputting data.

[0091] Those skilled in the art will understand that all or part of the steps of the above method embodiments can be implemented by hardware related to program instructions. The aforementioned program can be stored in a computer-readable storage medium. When the program is executed, it performs the steps of the above method embodiments. The aforementioned storage medium includes various media that can store program code, such as mobile storage devices, read-only memory (ROM), magnetic disks, or optical disks.

[0092] When the integrated units of this invention are implemented as software functional units and sold or used as independent products, they can also be stored in a computer-readable storage medium. Based on this understanding, the technical solutions of the embodiments of this invention, or the parts that contribute to the prior art, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the methods described in the various embodiments of this invention. The aforementioned storage medium includes various media capable of storing program code, such as mobile storage devices, ROMs, magnetic disks, or optical disks.

[0093] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A method for controlling the transition of gear train teeth, characterized in that, For wheel-rail to rack-rail transition scenarios where the speed difference adjustment section is cancelled, the following steps are included: S1: Monitor the advance transponder information received by the train; the advance transponder information includes the target speed of the gear tooth entry; S2: The train controls its running speed according to the target speed of the gear entry in the advance transponder information, and sends gear control commands to the gear motor; S3: The gear motor starts according to the gear control command and rotates to the target speed for gear entry; S4: After the train receives the transponder information, the relative distance between the train and the transponder is obtained in real time; S5: Based on the relative distance, when the train enters the target position, the gear motor drive is turned off, and the gear motor rotates inertial mode. S6: After the train has fully entered the rack section, the gear motor drive is started to realize the rack train entering the rack. S5 includes the following steps: The determination is made based on the relative distance S; When S≥L i +S0-S 安 Turn off the drive of the i-th gear motor, causing the i-th gear motor to rotate inertial mode; Among them, L i Si is the distance from the transponder reader of the train to the i-th gear; S0 is the distance from the actuator transponder to the gear engagement device; Si 安 This is a preset safety margin.

2. The method for controlling the tooth entry transition of a rack train according to claim 1, characterized in that, The advance warning transponder is installed at the connection between the adhesive section and the rack section.

3. The method for controlling the tooth entry transition of a rack train according to claim 1, characterized in that, The advance transponder information includes an advance transponder identification code; the train determines the transponder as an advance transponder based on the advance transponder identification code.

4. The method for controlling the tooth entry transition of a rack train according to claim 1, characterized in that, The transponder information includes a transponder identification code; the train identifies the transponder as a transponder based on the transponder identification code.

5. The method for controlling the tooth entry transition of a rack train according to claim 1, characterized in that, S4 calculates the relative distance between the train and the transponder by detecting the number of rotations of the train's wheels.

6. The method for controlling the tooth entry transition of a rack train according to claim 1, characterized in that, The criterion for determining whether the train has fully entered the rack rail section in S6 is as follows: S≥S0+L 列 +L 入 , Wherein, S is the relative distance; S0 is the distance from the transponder to the tooth transition device; L 列 L is the length of the train. 入 The length of the tooth transition device.

7. A gear train tooth entry transition control system, characterized in that, For performing the method according to any one of claims 1 to 6; The system includes: a transponder array, a transponder reader, a speed sensor, an onboard safety computer, and a TCMS; The transponder group includes a warning transponder and an execution transponder; the warning transponder is located at the connection between the adhesive section and the rack and pinion section; the execution transponder is located in the adhesive section; The transponder reader is installed under the train and can receive the signal reflected by the transponder group when the train passes the transponder group; The speed sensor is located at the wheel and is used to detect the number of wheel rotations. The onboard safety computer is installed on the train and is used to calculate the position of the train based on the data from the speed sensor, and to control the TCMS. The TCMS is used to control the working state of the gear motor according to the instructions of the on-board safety computer.

8. A gear train tooth entry transition control system according to claim 7, characterized in that, The position of the actuator transponder satisfies: S0≥V0*t 反 , Where S0 is the distance between the executing transponder and the junction of the adhesive section and the toothed track section; V0 is the target speed of tooth entry recorded by the advance transponder, t 反 Let be the response time of the control system.

9. A gear train tooth entry transition control device, characterized in that, It includes at least one processor and a memory communicatively connected to the at least one processor; the memory stores instructions executable by the at least one processor to enable the at least one processor to perform the method of any one of claims 1 to 6.

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