Railway vehicle and rail vehicle braking method

Abstract

The invention provides a railway vehicle and a railway vehicle braking method.The railway vehicle comprises a brake, a driving device, a sensor unit and a control unit, the brake is provided with a brake disc, the driving device is used for being arranged on the railway vehicle, the driving device is in transmission connection with the brake, and the driving device is used for driving the brake to move; and the sensor unit is used for detecting the environment information around the railway vehicle. When the railway vehicle is in rainy and snowy weather, the sensor unit can determine that the railway vehicle is in rainy, snowy, wet and slippery weather according to detected environmental information around the vehicle, the control unit controls the driving device to operate according to a detection result of the sensor unit, and the driving device drives the brake to move. The brake disc of the brake is in contact with the inner side of the rail, so that the friction force between the rail vehicle and the rail is improved, and the braking capacity of the rail vehicle is enhanced in rainy, snowy, wet and slippery weather.

Description

Technical Field

[0001] The present invention relates to the technical field of rail vehicle braking, and in particular to a rail vehicle and a rail vehicle braking method. Background Art

[0002] This section merely provides background information related to the present disclosure and is not necessarily prior art.

[0003] In urban rail transit, especially in slippery rainy and snowy weather, the wheel-rail adhesion coefficient of subway vehicles will drop significantly, affecting the normal braking of the train and posing a safety hazard. Traditional solutions include the use of anti-slip materials, heaters or mechanical removal, but these methods have problems such as high cost, difficult maintenance or untimely response. Summary of the invention

[0004] The purpose of the present invention is to at least solve the technical problem of insufficient braking force of existing rail vehicles in rainy and snowy weather. This purpose is achieved through the following technical solutions:

[0005] The present invention provides a rail vehicle, comprising:

[0006] a brake having a brake disc;

[0007] A driving device, the driving device is drivingly connected to the brake, and the driving device is used to drive the brake to move so that the brake disc is in contact with or spaced from the inner side of the track;

[0008] A sensor unit, used for detecting environmental information around the rail vehicle;

[0009] The control unit is electrically connected to the driving device and the sensor unit, and controls the driving device according to the environmental information detected by the sensor unit.

[0010] When the rail vehicle proposed by the present invention is in rainy and snowy weather, the sensor unit can determine that the rail vehicle is in rainy and snowy wet weather according to the detected environmental information around the vehicle, and the control unit controls the operation of the driving device according to the detection result of the sensor unit, and the driving device drives the brake to move so that the brake disc of the brake contacts the inner side of the track, thereby increasing the friction between the rail vehicle and the track, and then cooperating with the original braking system of the rail vehicle, in rainy and snowy wet weather, the braking ability of the rail vehicle is enhanced, and the problem of friction failure caused by a reduced adhesion coefficient between the rail vehicle and the track is avoided.

[0011] In addition, the rail vehicle according to the present invention may also have the following additional technical features:

[0012] In some embodiments of the present invention, the driving device includes a driving assembly, a connecting rod and a support rod, the support rod extending along the height direction of the rail vehicle, one end of the connecting rod is transmission-connected to the driving assembly, the other end of the connecting rod is connected to the brake, and the portion between the two ends of the connecting rod is rotatably connected to the support rod, and the driving assembly is used to drive the connecting rod to swing so as to drive the brake to move closer to or away from the inner side of the track.

[0013] In some embodiments of the present invention, the driving device includes a driving assembly, a support rod and two connecting rods, the support rod extends along the height direction of the rail vehicle, the two connecting rods are arranged in an X-shape, the driving assembly is provided with a driving end at each end of the rail vehicle, the first ends of the two connecting rods are respectively connected to the two driving ends in a transmission manner, the number of the brakes is two, and the second ends of the two connecting rods are each provided with a brake, the portion between the first end and the second end of each of the two connecting rods is rotatably connected to the support rod, and the driving assembly is used to drive the two connecting rods to swing, so as to drive the brake to move closer to or away from the inner side of the track.

[0014] In some embodiments of the present invention, the brake also includes a pressure regulating device, which is connected to the connecting rod and is transmission-connected to the brake disc. The pressure regulating device is also electrically connected to the control unit, and the pressure regulating device is used to drive the brake disc to move so as to adjust the clamping force of the brake disc against the inner side of the track.

[0015] In some embodiments of the present invention, the pressure regulating device includes a hydraulic cylinder and an acceleration sensor, the acceleration sensor is used to collect the acceleration signal of the rail vehicle, the hydraulic cylinder is connected to the driving device, the output end of the hydraulic cylinder is transmission-connected to the brake disc, the hydraulic cylinder and the acceleration sensor are both electrically connected to the control unit, and the control unit is used to control the hydraulic cylinder to drive the brake disc to press the inner side of the track according to the acceleration signal.

[0016] In some embodiments of the present invention, the sensor assembly includes at least one of a humidity sensor, a temperature sensor, an optical sensor and an ultrasonic sensor. The humidity sensor is used to detect the wetness of the track surface, the temperature sensor is used to detect the temperature of the track surface and the surrounding environment, and the optical sensor and the ultrasonic sensor are used to detect snow or ice accumulation on the track surface.

[0017] In some embodiments of the present invention, the rail vehicle further comprises a vehicle body and a bogie, wherein the bogie is mounted at the bottom of the vehicle body, and the drive device and / or the sensor unit is mounted on the bogie.

[0018] A second aspect of the present invention provides a rail vehicle braking method, which is implemented according to the rail vehicle provided in the first aspect of the present invention, and the rail vehicle braking method includes the following steps:

[0019] Receiving humidity signal and temperature signal of the track surface;

[0020] According to the humidity signal and the temperature signal, controlling the driving device to drive the brake to contact the inner side of the track for braking;

[0021] receiving an acceleration signal of the rail vehicle;

[0022] According to the acceleration signal being greater than a preset threshold, the driving device is controlled to increase the braking force of the brake.

[0023] The rail vehicle braking method proposed in the second aspect of the present invention is implemented according to the rail vehicle proposed in the first aspect of the present invention. In rainy and snowy weather, the humidity signal and temperature signal of the track surface are detected by the sensor unit, and whether the rail vehicle is in rainy and snowy wet weather is determined according to the humidity signal and temperature signal of the track surface. When it is determined that the rail vehicle is in rainy and snowy wet weather, the control unit controls the operation of the driving device so that the driving device drives the brake to move so that the brake disc of the brake contacts the inner side of the track, thereby increasing the friction between the rail vehicle and the track, and then cooperating with the original braking system of the rail vehicle to enhance the braking ability of the rail vehicle in rainy and snowy wet weather. After the rail vehicle is braked, the acceleration signal of the rail vehicle is detected. When the acceleration signal is greater than the preset threshold, it is determined that the braking is insufficient, and the control unit controls the driving system to increase the contact pressure of the brake disc on the inner side of the track, thereby increasing the braking force.

[0024] In some embodiments of the present invention, the step of controlling the driving device to drive the brake to contact the inner side of the track for braking according to the humidity signal and the temperature signal comprises:

[0025] According to the humidity signal being greater than a preset temperature threshold and / or the temperature signal being greater than a preset humidity threshold, the driving device is controlled to increase the braking force of the brake.

[0026] In some embodiments of the present invention, the rail vehicle braking method further comprises the steps of:

[0027] Receiving an image of the surrounding environment of the rail vehicle;

[0028] Analyzing the surrounding environment image to calculate the density value of raindrops or snowflakes in the environment where the rail vehicle is located;

[0029] The driving device is controlled to adjust the driving force of the brake according to the density value, and the driving force is positively correlated with the density value. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Various other advantages and benefits will become apparent to those of ordinary skill in the art by reading the detailed description of the preferred embodiments below. The accompanying drawings are only for the purpose of illustrating the preferred embodiments and are not to be considered as limiting the present invention. Moreover, the same reference numerals are used throughout the accompanying drawings to represent the same components. In the accompanying drawings:

[0031] Figure 1 A schematic structural diagram of a rail vehicle according to an embodiment of the present invention is schematically shown;

[0032] Figure 2 A schematic structural diagram of a rail vehicle (a connecting rod is slidably connected with a hydraulic rod and a hydraulic cylinder pressure regulating mechanism is configured) in a first perspective when not braking according to an embodiment of the present invention;

[0033] Figure 3 A schematic diagram of the structure of a rail vehicle (a connecting rod is slidably connected with a hydraulic rod and is equipped with a hydraulic cylinder pressure regulating mechanism) under braking is shown schematically from a first perspective according to an embodiment of the present invention;

[0034] Figure 4 A schematic diagram of the structure of one side of a rail vehicle (a connecting rod is slidably connected with a hydraulic rod and a hydraulic cylinder pressure regulating mechanism is configured) under non-braking is schematically shown according to an embodiment of the present invention;

[0035] Figure 5 Schematically shows Figure 3 A schematic diagram of the local enlarged structure at point A in the middle;

[0036] Figure 6 A schematic diagram of the structure of a rail vehicle (with an X-shaped connecting rod and a hydraulic cylinder pressure regulating mechanism) according to an embodiment of the present invention in a first perspective without braking is shown;

[0037] Figure 7 A schematic diagram of the structure of a rail vehicle (with an X-shaped connecting rod and a hydraulic cylinder pressure regulating mechanism) under braking according to an embodiment of the present invention is shown in a first perspective;

[0038] Figure 8 Schematically shows Figure 6 A schematic diagram of the local enlarged structure at B in the middle;

[0039] Fig. 9A schematic diagram of the structure of a rail vehicle (a connecting rod is slidably connected with a supporting rod and is equipped with a motor pressure regulating mechanism) in a first perspective when not braking according to an embodiment of the present invention is shown;

[0040] Fig.10 A schematic diagram of the structure of a rail vehicle (a connecting rod is slidably connected with a supporting rod and is equipped with a motor pressure regulating mechanism) under braking according to an embodiment of the present invention is shown in a first perspective;

[0041] Fig.11 The structure diagram of the brake and driving device of the rail vehicle (the connecting rod and the supporting rod are slidably connected and equipped with a motor pressure regulating mechanism) according to an embodiment of the present invention is schematically shown;

[0042] The symbols in the accompanying drawings are as follows:

[0043] 100. rail vehicle; 101. track; 102. wheel;

[0044] 10. Brake; 11. Brake disc; 12. Pressure regulating device; 121. Hydraulic cylinder; 122. Acceleration sensor; 123. Pressure regulating motor;

[0045] 20. driving device; 21. driving assembly; 211. hydraulic rod; 22. connecting rod; 23. supporting rod; 24. sliding shaft; 25. sliding groove; 26. rotating shaft;

[0046] 30. Bogie. DETAILED DESCRIPTION

[0047] The exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although the exemplary embodiments of the present disclosure are shown in the accompanying drawings, it should be understood that the present disclosure can be implemented in various forms and should not be limited by the embodiments described herein. On the contrary, these embodiments are provided in order to enable a more thorough understanding of the present disclosure and to fully convey the scope of the present disclosure to those skilled in the art.

[0048] It should be understood that the terms used herein are only for the purpose of describing specific example embodiments and are not intended to be limiting. Unless the context clearly indicates otherwise, the singular forms "one", "an" and "said" as used herein may also be meant to include plural forms. The terms "include", "comprise", "contain", and "have" are inclusive, and therefore specify the existence of stated features, steps, operations, elements and / or parts, but do not exclude the existence or addition of one or more other features, steps, operations, elements, parts, and / or combinations thereof. The method steps, processes, and operations described herein are not interpreted as necessarily requiring them to be performed in the specific order described or illustrated, unless the execution order is clearly indicated. It should also be understood that additional or alternative steps may be used.

[0049] Although the terms first, second, third, etc. can be used in the text to describe multiple elements, components, regions, layers and / or sections, these elements, components, regions, layers and / or sections should not be limited by these terms. These terms can only be used to distinguish an element, component, region, layer or section from another region, layer or section. Unless the context clearly indicates, terms such as "first", "second" and other numerical terms do not imply order or sequence when used in the text. Therefore, the first element, component, region, layer or section discussed below can be referred to as the second element, component, region, layer or section without departing from the teaching of the example embodiments.

[0050] For ease of description, spatial relative terms may be used herein to describe the relationship of one element or feature relative to another element or feature as shown in the figure, such as "inside", "outside", "inner side", "outer side", "below", "below", "above", "above", etc. Such spatial relative terms are intended to include different orientations of the device in use or operation in addition to the orientation depicted in the figure. For example, if the device in the figure is turned over, then the elements described as "below other elements or features" or "below other elements or features" will subsequently be oriented as "above other elements or features" or "above other elements or features". Therefore, the example term "below..." can include both upper and lower orientations. The device can be oriented otherwise (rotated 90 degrees or in other directions) and the spatial relative descriptors used in the text are interpreted accordingly.

[0051] like Figures 1 to 11 As shown, Figures 1 to 11 The a direction indicates the height direction of the rail vehicle 100. The present invention provides a rail vehicle 100, including:

[0052] A brake 10 having a brake disc 11;

[0053] A driving device 20, the driving device 20 is in transmission connection with the brake 10, and the driving device 20 is used to drive the brake 10 to move so that the brake disc 11 is in contact with or spaced from the inner side of the track 101;

[0054] A sensor unit, used to detect environmental information around the rail vehicle 100;

[0055] The control unit is electrically connected to the driving device 20 and the sensor unit, and controls the driving device 20 according to the environmental information detected by the sensor unit.

[0056] It is understandable that the brake 10 can be a dynamic device with a driving mechanism, that is, a dynamic device that drives the brake disc 11 to move through a motor or a hydraulic mechanism, which can be preliminarily controlled by the driving device 20 and then fine-tuned by the driving mechanism to improve the accuracy of the braking force. The brake 10 can also be a static device without a driving mechanism, that is, the brake 10 is driven by the driving device 20 to brake. The brake disc 11 can refer to the existing brake disc 11 structure, which can be a rectangular disc or a circular disc. The driving device 20 is installed on the rail vehicle 100 and is set close to the track 101. It can be fixed on the bogie 30 of the rail vehicle 100 so that it is set close to the track 101. The driving device 20 can include a hydraulic press and a corresponding transmission mechanism, and the transmission mechanism is driven by the hydraulic rod 211 of the hydraulic press, thereby driving the brake 10 to contact the inner side of the track 101 for braking. The hydraulic press can be fixed on the bogie 30, and the transmission mechanism can be a combination of multi-links 22, and the hydraulic press drives it to rotate to control the contact or spacing between the brake disc 11 and the inner side of the track 101. The sensor unit may be a temperature sensor, a humidity sensor, a visual sensor, etc. The sensor unit can sense the ambient temperature, ambient humidity, ambient scene, etc. around the rail vehicle 100, and analyze whether the rail vehicle 100 is in rainy, snowy, and slippery weather based on the ambient temperature, ambient humidity, and ambient scene. The control unit is disposed on the rail vehicle 100, and is used to control the drive device 20 to drive the brake 10 for braking according to the detection result of the sensor unit. Specifically, the movement trajectory of the brake disc 11 can be configured to be roughly in the horizontal direction. When braking is not required, the brake disc 11 is driven to move roughly in the horizontal direction toward the center line of the two rails of the track 101. When braking is required, the brake disc 11 is driven to move roughly in the horizontal direction toward the inner side of the single rail 101, and fits with the inner side of the rail 101 to generate friction, thereby achieving braking in rainy, snowy, and slippery weather.

[0057] When the rail vehicle 100 proposed by the present invention is in rainy and snowy weather, the sensor unit can determine that the rail vehicle 100 is in rainy and snowy wet weather according to the detected environmental information around the vehicle, and the control unit controls the operation of the drive device 20 according to the detection result of the sensor unit, and the drive device 20 drives the brake 10 to move so that the brake disc 11 of the brake 10 contacts the inner side of the track 101, thereby increasing the friction between the rail vehicle 100 and the track 101, and then cooperating with the original braking system of the rail vehicle 100, in rainy and snowy wet weather, the braking ability of the rail vehicle 100 is enhanced, and the problem of friction failure caused by the reduction of the adhesion coefficient between the rail vehicle 100 and the track 101 is avoided.

[0058] In some embodiments of the present invention, the driving device 20 includes a driving assembly 21, a connecting rod 22 and a support rod 23, the support rod 23 extends along the height direction of the rail vehicle 100, one end of the connecting rod 22 is transmission-connected to the driving assembly 21, the other end of the connecting rod 22 is connected to the brake 10, and the portion between the two ends of the connecting rod 22 is rotatably connected to the support rod 23. The driving assembly 21 is used to drive the connecting rod 22 to swing, so as to drive the brake 10 to move closer to or away from the inner side of the track 101.

[0059] It can be understood that the driving assembly 21 can be a hydraulic press, which is mounted on the bogie 30 and is located between the two wheels 102. The output rod is the hydraulic rod 211 of the hydraulic press, which can move approximately in the horizontal direction and is arranged on the side of the hydraulic press facing the wheel 102. A connecting hole can be arranged at one end of the connecting rod 22, and is hinged to the end of the hydraulic rod 211 through a latch. One end of the support rod 23 can be fixed to the bogie 30 or the hydraulic press, and the support rod 23 is arranged vertically. The other end of the support rod 23 and the middle part of the connecting rod 22 can slide and rotate, which can be achieved by the sliding shaft 24 on the support rod 23 passing through the sliding groove 25 on the connecting rod 22, and the two can also be interchanged. When the hydraulic rod 211 is extended or retracted, the connecting rod 22 is driven to rotate and slide adaptively with one end of the support rod 23 as the rotation center. The brake 10 is installed at the end of the connecting rod 22 away from the hydraulic rod 211, so that when the hydraulic rod 211 is extended or retracted, the end of the connecting rod 22 away from the hydraulic rod 211 swings approximately in the horizontal direction, thereby driving the brake 10 to move approximately in the horizontal direction, so that the brake 10 fits against the inner side of the track 101 to generate friction, thereby achieving braking of the rail vehicle 100 in rainy and snowy weather.

[0060] In addition, if Figure 2-4As shown, the output rod can also be vertically arranged below the driving assembly 21 and horizontally arranged on the outer side of the track 101. A sliding shaft 24 is provided on the output rod. The sliding shaft 24 is slidably connected to the sliding groove 25 at the end of the connecting rod 22, and the connecting rod 22 can swing around the sliding shaft 24. The rotating shaft 26 on the support rod 23 is rotatably connected to the connecting rod 22, and the connecting rod 22 has the freedom to rotate around the rotating shaft 26, so that when the hydraulic rod 211 is extended downward or retracted upward, the connecting rod 22 is driven to rotate and adaptively slide with one end of the support rod 23 as the rotation center. The brake 10 is installed at the end of the connecting rod 22 away from the hydraulic rod 211. When the hydraulic rod 211 is extended or retracted, the end of the connecting rod 22 away from the hydraulic rod 211 swings approximately in the horizontal direction to drive the brake 10 to move in the approximately horizontal direction, so that the brake 10 fits against the inner side of the track 101 to generate friction, thereby realizing the braking of the rail vehicle 100 in rainy and snowy weather.

[0061] In some embodiments of the present invention, the driving device 20 includes a driving assembly 21, a support rod 23 and two connecting rods 22, the support rod 23 extends along the height direction of the rail vehicle 100, and the two connecting rods 22 are arranged in an X shape. The driving assembly 21 is provided with a driving end at both ends of the rail vehicle 100, and the first ends of the two connecting rods 22 are respectively connected to the two driving ends in a transmission manner. There are two brakes 10, and a brake 10 is provided at the second end of each of the two connecting rods 22. The portion between the first end and the second end of each of the two connecting rods 22 is rotatably connected to the support rod 23. The driving assembly 21 is used to drive the two connecting rods 22 to swing, so as to drive the brake 10 to move closer to or away from the inner side of the track 101.

[0062] It can be understood that the driving assembly 21 can be a hydraulic press, which is mounted on the bogie 30 and is located between the two wheels 102. The output rod is two hydraulic rods 211 respectively located at both ends of the hydraulic press in the horizontal direction. The hydraulic rods 211 can move approximately in the horizontal direction, and the hydraulic rods 211 are arranged on both sides of the hydraulic press facing the wheels 102. The two hydraulic rods 211 are respectively hinged to the two connecting rods 22, and a brake 10 is respectively arranged at one end of the two connecting rods 22 away from the driving assembly 21. A connecting hole can be arranged at one end of the connecting rod 22, and the connecting rod 22 is hinged to the end of the hydraulic rod 211 through a latch. One end of the support rod 23 can be fixed to the bogie 30 or the hydraulic press, and the support rod 23 is arranged vertically. The other end of the support rod 23 is hinged to the middle part of the connecting rod 22 and is slidably connected, which can be achieved by the sliding shaft 24 on the support rod 23 passing through the sliding groove 25 on the connecting rod 22. The two can also be exchanged, and the two connecting rods 22 are arranged in an X shape. When the hydraulic rod 211 is extended or retracted, the connecting rod 22 is driven to rotate with one end of the support rod 23 as the rotation center, and slide adaptively. The brake 10 is installed at the end of the connecting rod 22 away from the hydraulic rod 211, so that when the hydraulic rod 211 is extended or retracted, the end of the connecting rod 22 away from the hydraulic rod 211 swings to drive the brake 10 to move in a substantially horizontal direction, so that the brake 10 fits the inner side of the track 101 to generate friction, and realizes the braking of the rail vehicle 100 in rainy and snowy weather. By setting two connecting rods 22 connected to two brakes 10, the rail vehicle 100 can be frictionally braked with the tracks 101 on both sides in rainy and snowy slippery weather, thereby improving the braking effect.

[0063] In some embodiments of the present invention, the driving assembly 21 can also be a structure in which a motor drives a cam to rotate through a transmission mechanism. The cam is arranged above the first end of the connecting rod 22. As the cam rotates, the connecting rod 22 can be pressed down or lifted up, so that the connecting rod 22 flips around the connection between it and the support rod 23, thereby driving the brake 10 to swing, thereby achieving contact or separation between the brake 10 and the inner side of the track 101.

[0064] In some embodiments of the present invention, the brake 10 also includes a pressure regulating device 12, which is connected to the driving device 20, and the pressure regulating device 12 is transmission-connected to the brake disc 11. The pressure regulating device 12 is also electrically connected to the control unit. The pressure regulating device 12 is used to drive the brake disc 11 to move so as to adjust the clamping force of the brake disc 11 against the inner side of the rail 101.

[0065] It is understandable that in order to improve the braking effect, the braking force is matched with the slippery condition of the track 101. A pressure regulating device 12 may be provided to adjust the pressing force of the brake disc 11 against the inner side of the track 101. The pressure regulating device 12 may be a rotary drive device 20. For example, a motor is provided at the end of the connecting rod 22. The motor drives the brake 10 through a transmission mechanism, especially the brake disc 11 to flip. The flipping direction is configured to flip with the traveling direction of the rail vehicle 100 as the rotation axis, so that the brake disc 11 can be close to or away from the inner side of the track 101 in the horizontal direction. When the braking force needs to be increased, for example, when the acceleration of the rail vehicle 100 is small and the deceleration of the rail vehicle 100 is slow, the motor of the pressure regulating device 12 may be controlled by the control unit. The operation of the motor drives the brake disc 11 to flip, so that the brake disc 11 is pressed against the inner side of the track 101 with greater pressure, thereby increasing the braking force. The pressure regulating device 12 can also adopt a linear drive device 20, such as a hydraulic cylinder 121 mechanism, a cam mechanism, a screw mechanism or a gear rack mechanism, etc., to drive the transmission structure to move linearly through the driver, thereby driving the brake disc 11 to move linearly. Specifically, a hydraulic cylinder 121 can be arranged at the end of the connecting rod 22, and the hydraulic cylinder 121 can be connected to the hydraulic system of the rail vehicle 100 to provide a power source and facilitate control. The hydraulic rod 211 of the hydraulic cylinder 121 is fixedly connected to the brake disc 11, and the brake disc 11 and the hydraulic cylinder 121 are perpendicular to each other. When the braking force needs to be increased, the hydraulic cylinder 121 drives the hydraulic rod 211 to drive the brake disc 11 to press the inner side of the track 101 with greater pressure, so that the braking force is improved.

[0066] In some embodiments of the present invention, the pressure regulating device 12 includes a hydraulic cylinder 121 and an acceleration sensor 122, the acceleration sensor 122 is used to collect the acceleration signal of the rail vehicle 100, the hydraulic cylinder 121 is connected to the driving device 20, the output end of the hydraulic cylinder 121 is transmission-connected to the brake disc 11, the hydraulic cylinder 121 and the acceleration sensor 122 are both electrically connected to the control unit, and the control unit is used to control the hydraulic cylinder 121 to drive the brake disc 11 to tighten the inner side of the rail 101 according to the acceleration signal.

[0067] It is understandable that the hydraulic cylinder 121 can be connected to the hydraulic system of the rail vehicle 100 for centralized control. The hydraulic cylinder 121 is installed at the end of the connecting rod 22 away from the driving assembly 21, and the brake disc 11 is installed at the output end of the hydraulic cylinder 121, that is, on the hydraulic rod 211, and the brake disc 11 is vertically connected to the hydraulic rod 211. The acceleration sensor 122 is set on the rail vehicle 100 for real-time monitoring of the acceleration of the rail vehicle 100, especially the acceleration of the rail vehicle 100 after braking, and determining whether the braking force of the rail vehicle 100 meets the requirements according to the magnitude of the acceleration. When the braking force is insufficient, the control unit controls the hydraulic cylinder 121, and the hydraulic rod 211 extends to drive the brake disc 11 to further press against the inner side of the track 101 to increase the braking force.

[0068] In some embodiments of the present invention, the pressure regulating device 12 can also be implemented by a pressure regulating motor 123. For example, the pressure regulating motor 123 is arranged at the end of the connecting rod 22 away from the driving assembly 21, and the rotating shaft of the pressure regulating motor 123 is transmission-connected to the brake disc 11. The driving rotation direction of the pressure regulating motor 123 is parallel to the running direction of the rail vehicle 100, and the brake disc 11 is axially parallel to the rotating shaft of the pressure regulating motor 123, so that the pressure regulating motor 123 can drive the brake disc 11 to rotate according to actual needs, and then when the brake disc 11 abuts against the track 101, the brake disc 11 continues to be driven to rotate, thereby increasing the pressure of the brake disc 11 pressed against the track 101.

[0069] In some embodiments of the present invention, the brake 10 also includes an angle adjustment motor and a posture sensor. The angle adjustment motor is installed at the end of the connecting rod 22 away from the driving assembly 21. The output end of the angle adjustment motor is transmission-connected to the hydraulic cylinder 121. The angle adjustment motor is also electrically connected to the posture sensor. The posture sensor is used to collect the angle between the brake disc 11 and the vertical direction. The angle adjustment motor is used to adjust the angle of the brake 10 relative to the vertical direction according to the angle.

[0070] It can be understood that the pressure regulating device 12 can be a rotary drive device 20, for example, an angle adjusting motor is arranged at the end of the connecting rod 22, and the angle adjusting motor can be installed at the end of the connecting rod 22 away from the bogie 30 by means of clipping or screwing. The axis of the angle adjusting motor can be arranged parallel to the travel direction of the rail vehicle 100, and the angle adjusting motor and the brake disc 11 can be connected by a transmission mechanism such as gears to achieve deceleration and torque increase. The rotation output of the angle adjusting motor drives the brake disc 11 to flip through the transmission mechanism, and the flipping direction is configured to flip with the travel direction of the rail vehicle 100 as the rotation axis, so that the brake disc 11 can adjust the angle with the inner side of the track 101, so that the brake disc 11 can be parallel to the inner side of the track 101, thereby improving the fit of the brake disc 11 during braking.

[0071] In some embodiments of the present invention, the sensor assembly includes at least one of a humidity sensor, a temperature sensor, an optical sensor, and an ultrasonic sensor. The humidity sensor is used to detect the wetness of the surface of the track 101, the temperature sensor is used to detect the temperature of the surface of the track 101 and the surrounding environment, and the optical sensor and the ultrasonic sensor are used to detect snow or ice on the surface of the track 101.

[0072] It is understandable that a humidity sensor can be provided on the bogie 30 to better monitor the humidity near the track 101, and the humidity sensor can be of models such as SHT21, DHT22, and AM2302. A temperature sensor can be provided on the bogie 30 to better monitor the temperature near the track 101, and the temperature sensor can be of models such as LM-400, LM-410, and LM-PT100. An optical sensor can be provided at the front end of the rail vehicle 100 to better monitor the surrounding environment of the rail vehicle 100, and the model of the optical sensor can be LTR-558ALS-WA, OPB991T51Z, etc., which can be selected according to actual needs. By collecting the surrounding environment of the rail vehicle 100, the processor analyzes the picture, such as the brightness of the picture, identifying snowflakes and raindrops in the picture, etc., and determines whether it is slippery rainy and snowy weather according to the image recognition result. The ultrasonic sensor can be set on the bogie 30, and the model can be HC-SR04, UM30-2, etc. The ultrasonic sensor collects entities in the surrounding air, especially attachments on the surface of the track 101, and analyzes the collection results to determine whether it is slippery rainy or snowy weather.

[0073] In some embodiments of the present invention, a high friction material layer is provided on the side of the brake disc 11 facing the inner side of the track 101 , which provides enhanced friction when the brake disc 11 contacts the surface of the track 101 without damaging the track 101 .

[0074] In some embodiments of the present invention, the control unit includes a microprocessor and a communication module, the microprocessor is used to execute algorithms to analyze sensor data and formulate control strategies, and the communication module is used to exchange data with the central control system of the rail vehicle 100 to work in coordination.

[0075] In some embodiments of the present invention, the rail vehicle 100 further includes a vehicle body and a bogie 30 , wherein the bogie 30 is mounted at the bottom of the vehicle body, and the driving device 20 and / or the sensor unit are mounted on the bogie 30 .

[0076] It can be understood that the car body can be a car body of a subway, the bogie 30 is arranged at the bottom of the car body and connected to the wheel 102, the rail vehicle 100 braking system is arranged on the bogie 30, the sensor unit can be arranged on the car body, the control unit can be integrated into the control device of the rail vehicle 100, and the brake 10 can be a dynamic device with a driving mechanism, that is, a dynamic device that drives the brake disc 11 to move through a motor or a hydraulic mechanism, and can be preliminarily controlled by the driving device 20, and then fine-tuned by the driving mechanism to improve the accuracy of the braking force. The brake 10 can also be a static device without a driving mechanism, that is, the brake 10 relies on the driving device 20 to brake. The brake disc 11 can refer to the existing brake disc 11 structure, which can be a rectangular disc or a circular disc. The driving device 20 is installed on the rail vehicle 100 and is set close to the track 101. It can be fixed on the bogie 30 of the rail vehicle 100 so that it is set close to the track 101. The driving device 20 may include a hydraulic press and a corresponding transmission mechanism, and the transmission mechanism is driven by the hydraulic rod 211 of the hydraulic press, thereby driving the brake 10 to contact the inner side of the track 101 for braking. The hydraulic press can be fixed on the bogie 30, and the transmission mechanism can be a combination of multiple links 22, and the hydraulic press drives it to rotate to control the contact or interval between the brake disc 11 and the inner side of the track 101. The sensor unit can be a temperature sensor, a humidity sensor, a visual sensor, etc. The sensor unit can sense the ambient temperature, ambient humidity, ambient scene, etc. around the rail vehicle 100, and analyze whether the rail vehicle 100 is in rainy, snowy and slippery weather based on the sensor unit. The control unit is set on the rail vehicle 100, and is used to control the driving device 20 to drive the brake 10 for braking according to the detection result of the sensor unit. Specifically, the movement trajectory of the brake disc 11 can be configured to be roughly in the horizontal direction. When braking is not required, the brake disc 11 is driven to move roughly in the horizontal direction toward the center line of the two rails of the track 101. When braking is required, the brake disc 11 is driven to move roughly in the horizontal direction toward the inner side of the single track 101, and fits with the inner side of the track 101 to generate friction, thereby achieving braking in rainy, snowy and slippery weather.

[0077] The second aspect of the present invention provides a rail vehicle 100 braking method. According to the rail vehicle 100 provided in the second aspect of the present invention, the rail vehicle 100 braking method includes the following steps:

[0078] Receiving a humidity signal and a temperature signal from the surface of the track 101;

[0079] According to the humidity signal and the temperature signal, the driving device 20 is controlled to drive the brake 10 to contact the inner side of the track 101 for braking;

[0080] Receiving an acceleration signal of the rail vehicle 100;

[0081] According to the acceleration signal being greater than a preset threshold, the driving device 20 is controlled to increase the braking force of the brake 10 .

[0082] It is understood that the humidity signal and temperature signal of the surface of the track 101 can be collected by the humidity sensor and temperature sensor provided on the rail vehicle 100. For example, the temperature signal of the bottom environment temperature signal of the rail vehicle 100 can be collected using the temperature sensor of model DS18B20, so as to roughly determine the temperature signal of the surface of the track 101. The humidity sensor of model DHT22 can be used to collect the ambient humidity signal around the bottom of the rail vehicle 100, so as to infer the approximate humidity of the surface of the track 101. After receiving the humidity signal and the temperature signal, the control unit determines whether it is necessary to control the drive device 20 to drive the brake 10 to contact the inner side of the track 101 for braking according to whether the humidity signal and the temperature signal are greater than the preset threshold. After the control drive device 20 drives the brake 10 to contact the inner side of the track 101 for braking, the acceleration signal of the rail vehicle 100 collected by the acceleration sensor 122 (for example, the acceleration sensor 122 of model 13208A) can be received, and it can be determined whether the braking effect of the rail vehicle 100 is achieved according to the acceleration signal, which can be determined specifically according to whether the acceleration signal is greater than the preset acceleration threshold. When the acceleration signal determines that the rail vehicle 100 has not achieved the braking effect, the driving device 20 of the brake 10 can be controlled to increase the contact pressure between the brake 10 and the rail 101 to increase the braking force.

[0083] The second aspect of the present invention provides a braking method for a rail vehicle 100 according to the first aspect of the present invention. In rainy and snowy weather, the humidity signal and temperature signal on the surface of the track 101 are detected by the sensor unit. According to the humidity signal and temperature signal on the surface of the track 101, it is determined whether the rail vehicle 100 is in rainy and snowy weather. When it is determined that the rail vehicle 100 is in rainy and snowy weather, the control unit controls the driving device 20 to operate so that the driving device 20 drives the brake 10 to move so that the brake disc 11 of the brake 10 contacts the inner side of the track 101, thereby increasing the friction between the rail vehicle 100 and the track 101, and then cooperates with the original braking system of the rail vehicle 100 to enhance the braking ability of the rail vehicle 100 in rainy and snowy weather. After the rail vehicle 100 is braked, the acceleration signal of the rail vehicle 100 is detected. When the acceleration signal is greater than the preset threshold, it is determined that the braking is insufficient. The control unit controls the driving system to increase the contact pressure of the brake disc 11 on the inner side of the track 101, thereby increasing the braking force.

[0084] In some embodiments of the present invention, the step of controlling the driving device 20 to drive the brake 10 to contact the inner side of the track 101 for braking according to the humidity signal and the temperature signal includes:

[0085] According to the humidity signal being greater than a preset temperature threshold and / or the temperature signal being greater than a preset humidity threshold, the driving device 20 is controlled to increase the braking force of the brake 10 .

[0086] It can be understood that the humidity signal and temperature signal of the surface of the track 101 can be collected by the humidity sensor and temperature sensor arranged on the rail vehicle 100, the preset temperature threshold can be set below zero degrees, and the preset humidity threshold can be set to be greater than 50%. When the humidity signal is greater than the preset temperature threshold and / or the temperature signal is greater than the preset humidity threshold, the control unit controls the driving device 20 or the pressure regulating device 12 to apply a driving force to the brake 10, thereby driving the brake 10 to brake with a higher clamping force to fit the inner side of the track 101, thereby improving the braking force of the rail vehicle 100 in rainy, snowy and slippery weather.

[0087] In some embodiments of the present invention, the rail vehicle 100 braking method further includes the steps of:

[0088] Receiving a surrounding environment image of the rail vehicle 100;

[0089] Analyze the surrounding environment image to calculate the density value of raindrops or snowflakes in the environment where the rail vehicle 100 is located;

[0090] The driving device 20 is controlled to adjust the driving force of the brake 10 according to the density value, and the driving force is positively correlated with the density value.

[0091] It can be understood that the surrounding environment image of the rail vehicle 100 can be collected by a camera installed on the rail vehicle 100, and the collected surrounding environment image of the rail vehicle 100 can be provided to the image recognition algorithm for analysis. During the analysis, the processor can identify the single outline or density of raindrops or snowflakes, and count the number of raindrops or snowflakes within the image range, and then calculate the density of raindrops or snowflakes, so as to adjust the braking force of the brake 10 according to the density of raindrops or snowflakes.

[0092] The above are only preferred specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed by the present invention should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. A rail vehicle, characterized in that: include: a brake having a brake disc; A driving device, the driving device is drivingly connected to the brake, and the driving device is used to drive the brake to move so that the brake disc is in contact with or spaced from the inner side of the track; A sensor unit, used for detecting environmental information around the rail vehicle; The control unit is electrically connected to the driving device and the sensor unit, and controls the driving device according to the environmental information detected by the sensor unit.

2. The rail vehicle according to claim 1, characterized in that The driving device includes a driving assembly, a connecting rod and a support rod, the support rod extends along the height direction of the rail vehicle, one end of the connecting rod is transmission-connected to the driving assembly, the other end of the connecting rod is connected to the brake, and the portion between the two ends of the connecting rod is rotatably connected to the support rod, and the driving assembly is used to drive the connecting rod to swing so as to drive the brake to move closer to or away from the inner side of the track.

3. The rail vehicle according to claim 1, characterized in that: The driving device includes a driving assembly, a support rod and two connecting rods, the support rod extends along the height direction of the rail vehicle, the two connecting rods are arranged in an X shape, the driving assembly is provided with a driving end at both ends of the rail vehicle, the first ends of the two connecting rods are respectively connected to the two driving ends, the number of the brakes is two, and the second ends of the two connecting rods are each provided with a brake, the parts between the first and second ends of the two connecting rods are rotatably connected to the support rod, and the driving assembly is used to drive the two connecting rods to swing, so as to drive the brake to move closer to or away from the inner side of the track.

4. The rail vehicle according to claim 2, characterized in that: The brake also includes a pressure regulating device, which is connected to the connecting rod and is transmission-connected to the brake disc. The pressure regulating device is also electrically connected to the control unit. The pressure regulating device is used to drive the brake disc to move so as to adjust the clamping force of the brake disc against the inner side of the track.

5. The rail vehicle according to claim 4, characterized in that The pressure regulating device includes a hydraulic cylinder and an acceleration sensor, the acceleration sensor is used to collect the acceleration signal of the rail vehicle, the hydraulic cylinder is connected to the driving device, the output end of the hydraulic cylinder is transmission-connected to the brake disc, the hydraulic cylinder and the acceleration sensor are both electrically connected to the control unit, and the control unit is used to control the hydraulic cylinder to drive the brake disc to press the inner side of the track according to the acceleration signal.

6. The rail vehicle according to claim 1, characterized in that: The sensor assembly includes at least one of a humidity sensor, a temperature sensor, an optical sensor and an ultrasonic sensor. The humidity sensor is used to detect the wetness of the track surface, the temperature sensor is used to detect the temperature of the track surface and the surrounding environment, and the optical sensor and the ultrasonic sensor are used to detect snow or ice on the track surface.

7. The rail vehicle according to any one of claims 1 to 6, characterized in that: The rail vehicle further comprises a vehicle body and a bogie, wherein the bogie is mounted on the bottom of the vehicle body, and the drive device and / or the sensor unit is mounted on the bogie.

8. A rail vehicle braking method, implemented by the rail vehicle according to any one of claims 1 to 7, characterized in that: The following steps are involved: Receiving humidity and temperature signals from the track surface; According to the humidity signal and the temperature signal, controlling the driving device to drive the brake to contact the inner side of the track for braking; receiving an acceleration signal of the rail vehicle; According to the acceleration signal being greater than a preset threshold, the driving device is controlled to increase the braking force of the brake.

9. The rail vehicle braking method according to claim 8, characterized in that: The step of controlling the driving device to drive the brake to contact the inner side of the track for braking according to the humidity signal and the temperature signal comprises: According to the humidity signal being greater than a preset temperature threshold and / or the temperature signal being greater than a preset humidity threshold, the driving device is controlled to increase the braking force of the brake.

10. The rail vehicle braking method according to claim 8 or 9, characterized in that: The rail vehicle braking method further comprises the steps of: Receiving an image of the surrounding environment of the rail vehicle; Analyzing the surrounding environment image to calculate the density value of raindrops or snowflakes in the environment where the rail vehicle is located; The driving device is controlled to adjust the driving force of the brake according to the density value, and the driving force is positively correlated with the density value.

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