Safety protection system for locomotive

Abstract

The invention provides a safety protection system for a locomotive. The safety protection system comprises a power supply unit, a wheel set detector, a trackside controller and ground point type equipment, the power supply unit is used for providing electric energy for the wheel set detector, the trackside controller and the ground point type equipment; the wheel set detector is used for detecting whether a locomotive passes or not and sending a detection result to the trackside controller; the trackside controller is used for receiving and analyzing the detection result, judging the running direction of the locomotive according to the detection result and awakening or closing the ground point type equipment; the ground point type equipment is used for sending deceleration and / or parking signals to the locomotive; and the ground point type equipment is arranged between the wheel set detector and the soil baffle. The system is used for protecting the locomotive, when the locomotive is pushed or dragged, early warning prompt is carried out on the locomotive, deceleration and / or parking signals are sent, so that the locomotive can be smoothly parked, and the safety of locomotive leading personnel and equipment is ensured.

Description

Technical Field

[0001] The present invention relates to the field of railway locomotive safety control, and in particular to a safety protection system for locomotives. Background Art

[0002] A locomotive is a self-propelled vehicle that pulls or pushes railway vehicles and does not carry any commercial load. It is commonly known as a locomotive. Locomotives are generally driven directly or through a transmission device by power machinery such as steam engines, diesel engines, gas turbines, and traction motors. The power machinery generates torque on the locomotive's driving wheels, and at the same time, the road gives the driving wheels an equal and opposite reaction force. The sum of the reaction forces of each driving wheel is called the locomotive traction force. Earth guards refer to the earth piles or walls set up on both sides of the railway line, which are mainly used to prevent trains from derailing. Their function is to reduce the impact force when the train loses control and increase the vehicle's movement resistance, thereby preventing the train from accidentally derailing.

[0003] There are two types of locomotive shunting operations: pulling and pushing. In the case of pushing, the locomotive head is behind the vehicle and fails to stop in time when entering the dead end line, resulting in the risk of the vehicle colliding with the earthwork, which may cause personal injury or equipment damage. Summary of the invention

[0004] In view of the above shortcomings of the prior art, the present invention provides a safety protection system for a locomotive to improve the technical problem of the prior art that the locomotive is unsafe when parking.

[0005] To achieve the above-mentioned and other related purposes, the present invention provides a safety protection system for a locomotive, comprising: a power supply unit, a wheelset detector, a trackside controller and a ground point device;

[0006] The power supply unit is used to provide power to the wheelset detector, the trackside controller and the ground point equipment; the wheelset detector is used to detect whether a locomotive passes and send the detection result to the trackside controller; the trackside controller is used to receive and analyze the detection result, and determine the running direction of the locomotive according to the detection result, and wake up or shut down the ground point equipment; the ground point equipment is used to send a deceleration and / or stop signal to the locomotive; the ground point equipment is arranged between the wheelset detector and the earth barrier.

[0007] In an example of the present invention, the ground point equipment includes a speed limit point device; the speed limit point device is used to detect a first speed of the locomotive and send a deceleration signal to the locomotive according to the first speed and a preset speed.

[0008] In one example of the present invention, when the first speed is greater than the first preset speed, the speed limit point device sends an emergency braking signal to the locomotive; when the first speed is less than the first preset speed and greater than the second preset speed, the speed limit point device sends a conventional braking signal to the locomotive.

[0009] In one example of the present invention, the ground point equipment further includes a stop point device; the stop point device is used to detect the second speed of the locomotive and send a stop signal to the locomotive; the stop point device is located between the speed limit point device and the earth barrier.

[0010] In one example of the present invention, the wheelset detector detects whether a locomotive passes by detecting the wheels of the locomotive, and generates a detection result in real time and sends it to the trackside controller.

[0011] In an example of the present invention, the wheelset detector includes a first active magnetic steel sensor and a second active magnetic steel sensor arranged on the track, the first active magnetic steel sensor is arranged away from the soil barrier, and the second active magnetic steel sensor is arranged close to the soil barrier.

[0012] In one example of the present invention, a trackside controller receives the detection results and determines the running direction of the locomotive by the order in which the first active magnetic steel sensor and the second active magnetic steel sensor are triggered by the wheels; when the running direction of the locomotive is a first direction, the trackside controller adds one to the wheel count; when the running direction of the locomotive is a second direction, the trackside controller clears the wheel count.

[0013] In an example of the present invention, when the count reaches a first preset number, the trackside controller wakes up the ground point device.

[0014] In an example of the present invention, when the count reaches a second preset number or the preset time has passed since the trackside controller woke up the ground point device, the trackside controller shuts down the ground point device.

[0015] In one example of the present invention, the trackside controller further includes a release button; the trackside controller is further used to send a release signal to the locomotive.

[0016] The present invention provides a safety protection system for locomotives. The system uses a wheelset detector to detect whether a locomotive passes, uses a trackside controller to use the detection result of the wheelset detector to determine the running direction of the locomotive, and wakes up or shuts down the ground point device according to the running direction and running status of the locomotive. The ground point device sends a deceleration and / or stop signal to the locomotive. The system is used to protect the locomotive. When the locomotive arrives in a push or traction mode, the locomotive is warned and a deceleration and / or stop signal is sent so that the locomotive can stop smoothly, ensuring the safety of the locomotive leader and equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 A block diagram of a safety protection system for a locomotive according to an embodiment of the present invention;

[0019] Figure 2 It is a schematic diagram of a parking point device sending a signal to a locomotive in one embodiment of the present invention. DETAILED DESCRIPTION

[0020] The following is an explanation of the embodiments of the present invention by specific examples, and those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that the features in the following embodiments and the embodiments can be combined with each other without conflict. It should also be understood that the terms used in the embodiments of the present invention are intended to describe specific embodiments, rather than to limit the scope of protection of the present invention. The test methods for which specific conditions are not specified in the following examples are usually carried out under conventional conditions or according to the conditions recommended by the manufacturers.

[0021] When numerical ranges are given in the embodiments, it should be understood that, unless otherwise specified in the present invention, both endpoints of each numerical range and any value between the two endpoints can be selected. Unless otherwise defined, all technical and scientific terms used in the present invention are familiar to those skilled in the art and the description of the present invention, and any methods, equipment and materials of the prior art similar or equivalent to the methods, equipment and materials described in the embodiments of the present invention can also be used to implement the present invention.

[0022] It should be noted that the terms such as "upper", "lower", "left", "right", "middle" and "one" etc. used in this specification are only for the convenience of description and are not intended to limit the scope of implementation of the present invention. Changes or adjustments to their relative relationships, without substantially changing the technical content, should also be regarded as the scope of implementation of the present invention.

[0023] See also Figure 1 to Figure 2A safety protection system 100 for locomotives, the system uses a wheelset detector 120 to detect whether a locomotive passes, uses a trackside controller 130 to use the detection result of the wheelset detector 120 to determine the running direction of the locomotive, and the trackside controller 130 wakes up or shuts down a ground point device 140 according to the running direction and running status of the locomotive. After waking up, the ground point device 140 sends a deceleration and / or stop signal to the locomotive. The system is used to protect the locomotive. When the locomotive arrives in a push or traction mode, the locomotive is warned, and a deceleration and / or stop signal is sent so that the locomotive can stop smoothly, so as to improve the unsafe technical problem of locomotive parking in the prior art and ensure the safety of the locomotive leader and equipment.

[0024] See also Figure 1 The system includes: a power supply unit 110, a wheelset detector 120, a trackside controller 130 and a ground point device 140;

[0025] The power supply unit 110 is used to provide electrical energy to the wheelset detector 120 , the trackside controller 130 and the ground point equipment 140 .

[0026] In one embodiment of the present invention, the power supply unit 110 includes a power converter, a power distributor and a power output protection device, and the power supply unit 110 provides working power and logic power for the wheelset detector 120, the trackside controller 130 and the ground point equipment 140.

[0027] The wheelset detector 120 is used to detect whether a locomotive passes by and send the detection result to the trackside controller 130.

[0028] In one embodiment of the present invention, the wheel pair detector 120 detects whether there is a locomotive by detecting the wheels of the locomotive. The wheel pair detector 120 includes a first active magnetic steel sensor and a second active magnetic steel sensor arranged on the track. The active magnetic steel sensor detects whether the wheel is above the active magnetic steel sensor by checking whether the resonant frequency is normal, thereby detecting whether the locomotive passes. When no wheel passes above the active magnetic steel sensor, the resonant circuit in the active magnetic steel sensor generates a sinusoidal signal, and the detection result at this time is a high level. When the wheel passes above the active magnetic steel sensor, the sinusoidal signal generated by the resonant circuit in the active magnetic steel sensor is destroyed, and the detection result at this time is a low level. In one embodiment, the active magnetic steel sensor also includes a detection circuit, which detects the resonant circuit. When the resonant circuit generates a sinusoidal signal, the detection circuit outputs a high level signal to the trackside controller 130. When the resonant circuit does not generate a sinusoidal signal, the detection circuit outputs a low level signal to the trackside controller 130 or does not output a voltage signal. The wheelset detector 120 sends the high and low levels of the first active magnetic steel sensor and the second active magnetic steel sensor as detection results to the trackside controller 130 in real time.

[0029] In one embodiment of the present invention, the first active magnetic steel sensor is arranged away from the earth barrier, and the second active magnetic steel sensor is arranged close to the earth barrier. The running direction of the locomotive is different, and the time sequence of the first active magnetic steel sensor and the second active magnetic steel sensor being triggered is different. When the running direction of the locomotive is the first direction running toward the earth barrier, each wheel of the locomotive is first detected by the first active magnetic steel sensor and then detected by the second active magnetic steel sensor. When the running direction of the locomotive is the second direction running away from the earth barrier, each wheel of the locomotive is first detected by the second active magnetic steel sensor and then detected by the first active magnetic steel sensor. The wheel pair detector 120 sends the high and low levels of the first active magnetic steel sensor and the second active magnetic steel sensor as the detection results to the trackside controller 130 in real time, so that the trackside controller 130 can determine the running direction of the locomotive.

[0030] The trackside controller 130 is used to receive and analyze the detection results, determine the running direction of the locomotive according to the detection results, and wake up or shut down the ground point device 140.

[0031] In one embodiment of the present invention, the trackside controller 130 is arranged on the cement hard surface platform outside the track, and the trackside controller 130 includes a control box, a control unit, a power supply device and a signal processing unit. The control unit includes but is not limited to a single-chip microcomputer, a computer, an FPGA and other logic control devices. The trackside controller 130 receives the detection result sent by the wheel pair detector 120, determines the running direction of the locomotive by the detection result, and controls the ground point device 140 according to the running direction of the locomotive and the preset program. The trackside controller 130 determines the running direction of the locomotive by the order in which the first active magnetic steel sensor and the second active magnetic steel sensor are triggered by the wheel. When the running direction of the locomotive is the first direction, the trackside controller 130 adds one to the wheel count; when the running direction of the locomotive is the second direction, the trackside controller 130 clears the wheel count.

[0032] In one embodiment of the present invention, the trackside controller 130 controls the ground point device 140 according to the count of the locomotive wheels. When the count of the locomotive wheels reaches the first preset number 2, the trackside controller 130 wakes up the ground point device 140. When the count reaches the second preset number 15, the trackside controller 130 turns off the ground point device 140. When the count of the locomotive wheels reaches the first preset number 2 and the trackside controller 130 wakes up the ground point device 140, the trackside controller 130 performs timing. When the preset time reaches 60 seconds after the trackside controller 130 wakes up the ground point device 140, the trackside controller 130 turns off the ground point device 140. In other embodiments, the first preset number and the second preset number can also be other values ​​that satisfy that the second preset number is greater than the first preset number, and the preset time can also be other values. The first preset number, the second preset number and the preset time are set according to the length of the locomotive, and can be adapted to locomotives of different lengths.

[0033] In one embodiment of the present invention, the trackside controller 130 further includes a release button; the trackside controller 130 is also used to send a release signal to the locomotive. When the locomotive needs to pass the set stop point, the release button of the trackside controller 130 can be manually pressed, so that the trackside controller 130 sends a release signal to the locomotive, so that the locomotive no longer executes the deceleration and / or parking signal sent by the ground point device 140 after receiving the release signal. After the release button of the trackside controller 130 is pressed, the trackside controller sends the release signal to the locomotive via wireless transmission.

[0034] The ground point device 140 is used to send a deceleration and / or stopping signal to the locomotive; the ground point device 140 is arranged between the wheelset detector 120 and the earth barrier.

[0035] In one embodiment of the present invention, the position of the ground point device 140 can be set according to the parking point, and the ground point device 140 is set between the wheelset detector 120 and the earth barrier. The ground point device 140 includes a speed limit point device and a parking point device, and the parking point device is located between the speed limit point device and the earth barrier. The speed limit point device is used to detect the first speed of the locomotive, and send a deceleration signal to the locomotive according to the first speed and the preset speed. For example, when the first speed of the locomotive is greater than the first preset speed 13, the speed limit point device sends an emergency braking signal to the locomotive; when the first speed of the locomotive is less than the first preset speed 13 and greater than the second preset speed 10, the speed limit point device sends a conventional braking signal to the locomotive. The parking point device is used to detect the second speed of the locomotive and send a stop signal to the locomotive.

[0036] See also Figure 2In one embodiment of the present invention, both the speed limit point device and the stop point device include a mounting bracket and a magnet. The locomotive includes a receiving coil. Taking the stop point device as an example, after the stop point device is awakened by the trackside controller 130, the magnet of the stop point device is energized. When the locomotive runs along the track and passes the stop point device, the receiving coil on the locomotive cuts the magnet to generate a voltage pulse signal, which is converted into a stop signal by the signal conversion device of the locomotive. After the monitoring device of the locomotive recognizes the stop signal, it controls the locomotive to stop.

[0037] In one embodiment of the present invention, the distance between the wheelset detector 120 and the speed limit point device and the stop point device of the ground point equipment 140 can be set or changed according to the length of the locomotive.

[0038] The present invention provides a safety protection system 100 for a locomotive, which uses a wheel pair detector 120 to detect whether a locomotive passes, and uses two active magnetic steel sensors to detect the direction so that the trackside controller 130 can determine the running direction of the locomotive. The trackside controller 130 wakes up or shuts down the ground point device 140 according to the running direction of the locomotive and the preset program, and shuts down the ground point device 140 when it is not necessary to reduce energy consumption. After waking up, the ground point device 140 sends a signal of deceleration and / or stopping to the locomotive to prevent the locomotive from colliding with the soil barrier and protect the safety of people and equipment. Therefore, the present invention effectively overcomes some practical problems in the prior art and has a high utilization value and use significance. The above embodiments are only illustrative of the principles and effects of the present invention, and are not used to limit the present invention. Any person familiar with this technology can modify or change the above embodiments without violating the spirit and scope of the present invention. Therefore, all equivalent modifications or changes made by those with ordinary knowledge in the relevant technical field without departing from the spirit and technical ideas disclosed by the present invention should still be covered by the claims of the present invention.

Claims

1. A safety protection system for a locomotive, characterized in that: include: Power supply unit, wheelset detector, trackside controller and ground point equipment; The power supply unit is used to provide power to the wheelset detector, the trackside controller and the ground point equipment; The wheelset detector is used to detect whether a locomotive has passed and send the detection result to the trackside controller; The trackside controller is used to receive and analyze the detection result, determine the running direction of the locomotive according to the detection result, and wake up or shut down the ground point device; The ground point device is used to send a deceleration and / or stopping signal to the locomotive; the ground point device is arranged between the wheelset detector and the soil barrier.

2. The safety protection system according to claim 1, characterized in that: The ground point equipment includes a speed limit point device; the speed limit point device is used to detect a first speed of the locomotive and send a deceleration signal to the locomotive according to the first speed and a preset speed.

3. The safety protection system according to claim 2, characterized in that: When the first speed is greater than a first preset speed, the speed limit point device sends an emergency braking signal to the locomotive; when the first speed is less than the first preset speed and greater than a second preset speed, the speed limit point device sends a conventional braking signal to the locomotive.

4. The safety protection system according to claim 2, characterized in that: The ground point equipment also includes a stop point device; the stop point device is used to detect the second speed of the locomotive and send a stop signal to the locomotive; the stop point device is located between the speed limit point device and the earth barrier.

5. The safety protection system according to claim 1, characterized in that: The wheelset detector detects whether a locomotive passes by detecting the wheels of the locomotive, and generates a detection result in real time and sends it to the trackside controller.

6. The safety protection system according to claim 5, characterized in that: The wheelset detector comprises a first active magnetic steel sensor and a second active magnetic steel sensor which are arranged on the track, wherein the first active magnetic steel sensor is arranged away from the soil retaining plate, and the second active magnetic steel sensor is arranged close to the soil retaining plate.

7. The safety protection system according to claim 6, characterized in that: The trackside controller receives the detection result and determines the running direction of the locomotive by the order in which the first active magnetic steel sensor and the second active magnetic steel sensor are triggered by the wheel; when the running direction of the locomotive is a first direction, the trackside controller adds one to the wheel count; when the running direction of the locomotive is a second direction, the trackside controller clears the wheel count.

8. The safety protection system according to claim 7, characterized in that: When the count reaches a first preset number, the trackside controller wakes up the ground point device.

9. The safety protection system according to claim 8, characterized in that: When the count reaches a second preset number or a preset time has passed since the trackside controller woke up the ground point device, the trackside controller shuts down the ground point device.

10. The safety protection system according to claim 1, characterized in that: The trackside controller also includes a release button; the trackside controller is also used to send a release signal to the locomotive.

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