CN115384569B

CN115384569B - Rail vehicle and obstacle-removing and derailing-preventing detection device and detection method thereof

Info

Publication number: CN115384569B
Application number: CN202210839391.0A
Authority: CN
Inventors: 虞赛君; 林亚龙; 刘肖; 刘永; 马迪迪; 王婧雯; 蔡孙园; 陈志远
Original assignee: Hefei Rail Transit Group Co ltd
Current assignee: Hefei Rail Transit Group Co ltd
Priority date: 2022-07-18
Filing date: 2022-07-18
Publication date: 2023-03-31
Anticipated expiration: 2042-07-18
Also published as: CN115384569A

Abstract

The invention provides a rail vehicle and a device and a method for detecting obstacle removal and derailment prevention of the rail vehicle, belonging to the technical field of rail traffic; the obstacle removing assembly comprises a rotating shaft, a collision baffle and an elastic piece; the rotating shaft penetrates through the left side and the right side of the detection base and can move along the axial direction of the rotating shaft; the collision baffle is rotatably connected with the rotating shaft; the elastic piece is arranged on the rotating shaft and is configured to have reverse thrust on the rotating shaft when the rotating shaft moves along the axial direction to enable the elastic piece to deform elastically; the detection base is provided with a collision detection element and a pushing component; the pushing component can push the rotating shaft to axially move and make the elastic component elastically deform; the collision detection element can detect a sensing piece mounted on the sensing rotating shaft. The invention can solve the problem that the existing rail vehicle collision is easy to be mistakenly reported, so that the derailment detection precision is lower.

Description

Rail vehicle and obstacle-removing and anti-derailment detection device and detection method thereof

Technical Field

The invention belongs to the technical field of rail transit, relates to collision detection when a rail vehicle encounters an obstacle in the traveling direction and timely reflects the derailment risk, and particularly relates to a rail vehicle and an obstacle and derailment prevention detection device and method thereof.

Background

At present, the transportation volume of rail transit is larger and larger, and particularly urban rail transit and high-speed railways develop very rapidly. The large size of the operating vehicles necessitates tighter safety precautions. In rail transit, barrier detection device detects the object that exists in mainly to the track, avoids the barrier to cause the destruction to rail vehicle.

Although there are many safety measures, the events of collision with obstacles and train derailment still occur during the operation of trains. When a threatening obstacle is hit or the train derails happen, the train braking can be immediately carried out, so that the economic loss or casualties caused by accidents can be effectively reduced.

At present, rail train barrier detects and adopts contact barrier to detect more, and train locomotive bottom is equipped with contact barrier and detects the crossbeam, in case detect the crossbeam and contact the barrier on the track when, the crossbeam takes place deformation, sends deformation information to on-vehicle host computer through the sensor, and train emergency braking, for example chinese patent publication is: CN208233079U discloses an obstacle and derailment detection device. In such a way, the feedback device is triggered to send out collision warning only after the obstacle removing assembly is impacted, so that some collisions which do not influence the normal running of the vehicle are easily mistakenly reported, and the precision of derailment detection is low.

Disclosure of Invention

Aiming at least some problems in the prior art, the invention aims to solve the problem that the existing rail vehicle collision is easy to be mistakenly reported, so that the derailment detection precision is low.

In order to achieve the above object, the present invention provides a rail vehicle obstacle-removing derailment-prevention detection device, comprising:

the detection base is used for installing the obstacle-removing and derailing-preventing detection device on the rail vehicle;

the obstacle removing assembly is used for collision detection of the rail vehicle; the obstacle removing assembly comprises a rotating shaft, a collision baffle and an elastic piece; the rotating shaft is arranged on the detection base and can move along the axial direction of the rotating shaft; the collision baffle is connected with the rotating shaft and is configured to rotate around the rotating shaft when the collision baffle is in contact collision with an obstacle; the elastic piece is arranged on the rotating shaft and is configured to have reverse thrust on the rotating shaft when the rotating shaft moves along the axial direction to enable the elastic piece to deform elastically;

the obstacle-removing assembly further comprises a collision detection element and a pushing component which are arranged on the detection base; the pushing component is configured to push the rotating shaft to axially move and enable the elastic piece to elastically deform when the collision baffle rotates due to collision; the collision detection element is configured to detect the sensor mounted on the rotating shaft when the collision baffle is collided to cause the rotating shaft to move axially.

According to the technical scheme, the collision baffle is rotatably mounted on the detection base through the rotating shaft, the collision motion can be converted into rotary motion, the axis of the rotating shaft is driven to move to force the elastic piece to elastically deform, and the sensing piece triggers the collision detection element to generate a collision signal; the elastic recovery characteristic of the elastic piece determines that the elastic piece can trigger collision detection when being subjected to a certain force to generate enough deformation, so that the collision which does not influence the running of the vehicle is effectively prevented from being mistakenly reported, and the accuracy of the integral derailment detection is improved; meanwhile, the elastic restoring force of the elastic piece can enable the collision baffle to be separated from the collision and then restore the initial state before the collision.

As a further improvement, the rotating shaft penetrates through the left side surface and the right side surface of the detection base, one end of the rotating shaft, which is positioned on one side of the detection base, is connected with the collision baffle through the rocker arm, and the rotating shaft, which is positioned on the other side of the detection base, is sleeved with the elastic piece. Preferably, the elastic element is a spring, and the outer end side of the elastic element on the rotating shaft is provided with a sensing element; and a collision detection element is arranged on the detection base at the same side of the sensing piece. The spring is driven to deform through the rotating shaft to realize collision triggering, the sensing part is used as a limiting part of the spring and a collision triggering part, the structure is simple and ingenious, and the design is compact.

As a further improvement, the pushing component is arranged on the detection base on the side of the rocker arm and is provided with an inclined working surface capable of working in cooperation with the rocker arm, and when the collision baffle plate is contacted with an obstacle to collide and rotate, the inclined working surface of the pushing component is contacted with the rocker arm and extrudes the rocker arm, so that the rocker arm drives the rotating shaft to axially move. Through the contact and the cooperation of the inclined working surface of the pushing component and the rocker arm, the rotary motion of the collision baffle is ingeniously converted into the circumferential movement of the rotating shaft.

Preferably, the collision baffle has a collision surface arranged along the advancing direction of the rail vehicle, the collision surface is arranged to form an included angle beta with the advancing direction of the rail vehicle, and the collision baffle can have a guiding effect on an obstacle to the outer side of a steel rail during collision. This way, the collision force can be reduced, and simultaneously the barrier can be guided to move out of the running direction of the railway vehicle.

As an optimized technical scheme, a vertical displacement detection element and a transverse displacement detection element are mounted on the detection base, the vertical displacement detection element is used for detecting the vertical offset of the wheel relative to the steel rail in the vertical direction, and the transverse displacement detection element is used for detecting the transverse offset of the wheel relative to the steel rail in the horizontal direction. Detection cooperation collision detection of vertical and lateral offset can comparatively accurately judge rail vehicle derailment risk, provides the guide for driving emergency braking.

As a further improvement, the rocker arm is connected with the detection base through a cutting pin, and the cutting pin is configured to limit the rotation of the rocker arm. Collision baffle receives to collide the certain degree just to make the shearing pin cut, and then just can carry out the collision and detect, further avoids the wrong report that the lighter collision leads to, simultaneously, can set for and cut the dynamics, and control collision power detects the initial degree.

Furthermore, the detection base is provided with a limiting clamping block which is configured to be clamped between the rail head and the rail bottom of the steel rail, so that the wheels can be kept on the steel rail during collision.

In addition, the invention provides a rail vehicle, which comprises a steel rail, wheels and at least one rail vehicle obstacle and derailment prevention detection device; the detection base is arranged on a bogie of the railway vehicle; the collision baffle is positioned at the front side of the driving direction of the wheels and arranged above the steel rail in a crossing manner.

Finally, the present invention provides a method for detecting a rail vehicle, which can detect an obstacle collision of the rail vehicle, the method comprising the steps of: when the collision baffle is impacted by an obstacle, the collision baffle rotates around the rotating shaft; the pushing part applies axial force along the rotating shaft to the collision baffle, the collision baffle drives the rotating shaft to move axially, and the rotating shaft further drives the sensing part to be close to the collision detection element and be sensed.

It will be apparent that elements or features described in a single embodiment above may be used alone or in combination in other embodiments.

Drawings

In the drawings, the size and the proportion do not represent the size and the proportion of an actual product. The figures are merely illustrative, and certain non-essential elements or features have been omitted for clarity.

FIG. 1 is a schematic structural diagram of a rail vehicle obstacle-removing and derailing-preventing detection device of the invention installed on a rail vehicle;

FIG. 2 is a schematic view of a partially enlarged structure of a matching position of a barrier removing and rail derailing prevention detection device and a steel rail;

FIG. 3 is a schematic structural view of a detection base and a barrier assembly of the barrier-removing derailment-prevention detection device, as viewed from one side;

fig. 4 is a schematic structural view of a detection base and a barrier removing assembly in the barrier removing and derailing prevention detection device, which are viewed from the other side;

fig. 5 is a schematic structural view of a detection base and an obstacle-removing assembly in the obstacle-removing derailing-prevention detection device, which are viewed from the upper side;

fig. 6 is a schematic structural view of the working state and position of the obstacle-removing derailment-prevention detection device when the derailment of the railway vehicle occurs;

fig. 7 is a schematic structural view of a detection base mounting protective cover in the obstacle-removal derailment-prevention detection device.

Description of the reference numerals

1. Detecting a base; 2. a barrier removing assembly; 3. a steel rail; 4. a wheel; 101. a support plate; 102. a limiting clamping block; 103. a vertical displacement detection element; 104. a lateral displacement detecting element; 105. an impact detection element; 106. a push-up member; 107. a protective cover; 108. a shear pin; 201. a rocker arm; 202. a rotating shaft; 203. a collision baffle plate; 204. an elastic member; 205. a sensing member.

Detailed Description

The present invention will be described in detail with reference to the accompanying drawings. What has been described herein is merely a preferred embodiment in accordance with the present invention and other ways of implementing the invention will be apparent to those skilled in the art from the preferred embodiment and are within the scope of the invention.

In the description of the present invention, it should be noted that the terms "horizontal", "vertical", "upper", "lower", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, which are merely for convenience of description and simplification of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, should not be construed as limiting the present invention.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in a specific case to those of ordinary skill in the art.

As shown in fig. 3, 4 and 5, the present embodiment provides a device for detecting obstacle and derailment of a railway vehicle, which is used for auxiliary collision detection and derailment detection of a railway vehicle, where the railway vehicle is a vehicle that travels on a track via wheels, such as a train, a motor train, a subway, etc., and the present embodiment takes a subway as an example, and has a steel rail 3 and wheels 4. The obstacle-removing and derailing-preventing detection device is usually installed near a wheel 4 of a rail vehicle, is located outside the wheel 4, is generally installed on a bogie, and can be installed on a bogie of the wheel 4 on one side of a subway, and more generally installed on bogies on two sides, for example, fig. 1 and fig. 2 show a schematic structural diagram of the obstacle-removing and derailing-preventing detection device of the rail vehicle installed on the rail vehicle.

The rail vehicle obstacle-removing and derailing-preventing detection device mainly comprises a detection base 1 and an obstacle-removing assembly 2. The detection base 1 is used for installing the obstacle and derailment prevention detection device on a railway vehicle, such as a bogie; and the obstacle removing assembly 2 is used for detecting the collision of the railway vehicle. Specifically, in this embodiment, as seen from the traveling direction of the railway vehicle shown in fig. 2, the detection base 1 is a vertically long plate-shaped structure, and the upper end of the detection base, which is close to the rear side, is provided with a mounting seat connected with the bogie, and the detection base can be connected and fixed with the bogie by, for example, bolts, although other connection manners, such as welding and clamping, may be adopted. The detection base 1 also serves as a mounting base for the obstacle deflector assembly 2.

As shown in fig. 3 to 5, the barrier module 2 includes a rotation shaft 202, a collision stopper 203, and an elastic member 204. Wherein, the rotating shaft 202 is arranged to penetrate through the left and right opposite sides of the detection base 1 and can move along the self axial direction; the collision baffle 203 is connected with the rotating shaft 202 and is configured to rotate around the rotating shaft 202 when the collision baffle 203 collides with an obstacle in a contact manner; the elastic member 204 is mounted on the rotation shaft 202 and configured to have a reverse thrust to the rotation shaft 202 when the rotation shaft 202 moves in the axial direction to elastically deform the elastic member 204. The elastic member 204 achieves the above function by elastic deformation, which may be a spring, rubber, or other prior art, and the present embodiment is described as a spring. The barrier module 2 further includes a collision detecting element 105 and an urging member 106 mounted on the detection base 1. The pushing component 106 is configured to push the rotating shaft 202 to move axially and elastically deform the elastic component 204 when the collision baffle 203 is rotated by collision; the collision detecting element 105 is configured such that when the collision stopper 203 is collided to move the rotary shaft 202 axially, the sensor 205 mounted on the rotary shaft 202 can be detected by the collision detecting element 105. The collision detection element 105 may be various sensing detection elements in the prior art, such as a proximity switch, a travel switch, etc., and the sensing element 205 may be a trigger member, such as an iron plate, etc., which can be sensed by the proximity switch and the travel switch.

In the technical scheme of the embodiment, the collision baffle 203 is rotatably mounted on the detection base 1 through the rotating shaft 202, and can convert collision motion into rotary motion and drive the axis of the rotating shaft 202 to move so as to force the elastic member 204 to elastically deform, and the sensing member 205 triggers the collision detection element 105 to generate a collision signal; the elastic recovery characteristic of the elastic element 204 determines that the elastic element can trigger collision detection when being subjected to a certain force to generate enough deformation, so that the collision which does not influence the running of the vehicle is effectively prevented from being mistakenly reported, and the accuracy of the overall derailment detection is improved; meanwhile, the elastic restoring force of the elastic member 204 can make the collision baffle 203 separate from the collision, and the initial state before the collision can be recovered.

In some embodiments, a more detailed technical solution for implementing the obstacle clearance assembly 2 is provided, in which the rotating shaft 202 penetrates through left and right opposite side surfaces of the detection base 1, one end of the detection base 1 on one side is connected to the collision baffle 203 through the swing arm 201, and the rotating shaft 202 on the other side of the detection base 1 is sleeved with an elastic member 204, i.e., a sleeved spring. A sensing piece 205 is arranged on the outer end side of the elastic piece 204 on the rotating shaft 202; the collision detecting element 105 is mounted on the detection base 1 on the same side as the sensor 205. The spring is driven to deform through the rotating shaft 202 to realize collision triggering, the sensing piece 205 serves as a limiting piece of the spring and also serves as a collision triggering piece, and the spring collision triggering device is simple and ingenious in structure and compact in design. The shaft 202 can pass through a hole formed in the detection base 1 to realize penetration and axial movement. The swing arm 201 may be fixedly connected with the rotating shaft 202, or may be rotatably connected. The spring 204 is in an initial state when no collision occurs, may be in a natural uncompressed state, and may have a pre-compression amount. The sensing element 205 may be a ring-shaped iron plate, which is sleeved on the rotating shaft 202, and the outer end of the sensing element is fixed by a nut engaged with the rotating shaft 202, and the position and the pre-compression amount of the elastic element 204 can be adjusted. Of course, the positioning of the sensing element 205 may also be implemented by other manners, such as forming a slot on the rotating shaft 202 and implementing the positioning in cooperation with a snap spring, or forming a pin hole on the end portion of the rotating shaft 202 in the radial direction and implementing the positioning in cooperation with a cotter pin. The collision detecting element 105 is selectively a proximity switch, and can be mounted on the side of the detection base 1 through a Z-shaped bracket, and the detection end of the proximity switch is located between the sensing piece 205 and the side of the detection base 1 and faces the sensing piece 205. The vertical position of the connection point of the rotating shaft 202 and the detection base 1 is higher than that of the collision baffle 203, so that the impact force generated when the collision baffle 203 is collided can accurately urge the swing arm 201 to rotate, and as shown in fig. 4, the swing arm 201 can rotate clockwise.

In other embodiments, the pushing member 106 pushes the rocker arm 201 to move the rotating shaft 202 axially. As shown in fig. 4 and 5, the pushing member 106 is mounted on the detection base 1 on the side of the swing arm 201 and has an inclined working surface that can cooperate with the swing arm 201, that is, the pushing member 106 may be configured as a wedge block, and the inclined surface of the wedge block serves as the working surface. The pushing component 106 is configured to contact with the rocker arm 201 and press the rocker arm 201 when the collision baffle 203 contacts with an obstacle and rotates in a collision manner, so that the rocker arm 201 drives the rotating shaft 202 to move axially. Through the contact and matching of the inclined working surface of the pushing component 106 and the rocker arm 201, in the process that the rocker arm 201 rotates gradually, the rocker arm 201 moves along the inclined working surface and is gradually pushed to be far away from the side surface of the detection base 1, namely, the rotating shaft 202 moves leftward gradually in fig. 5, so that the sensing piece 205 compresses a spring, and the sensing piece 205 is sensed by the collision detection element 105. The urging member 106 is detachably mounted on the inspection base 1, or fixedly mounted on the inspection base 1 by, for example, welding.

In other embodiments, the crash barrier 203 has a crash surface disposed along the forward direction of the rail vehicle, i.e., the front side surface in fig. 5, and the crash surface is disposed at an angle β to the forward direction of the rail vehicle, so as to provide guidance to the obstacle to the outside of the rail 3 when a crash is delivered. Considering the guiding effect of the collision force transmission and the obstacle in a collision, the included angle beta is in the range of 0-90 deg., preferably 30-60 deg., more preferably 45-50 deg.. The included angle beta can reduce the collision force and can guide the barrier to move out of the running direction of the railway vehicle. Considering processing and installation, the collision baffle 203 can be made into a rectangular plate-shaped structure, the rocker arm 201 is arranged into an L-shaped structure, and the included angle beta can be controlled more conveniently by controlling the angle of the bent part of the L-shaped structure. Preferably, the swing arm 201 is detachably coupled to the rear side of the collision barrier 203 by bolts.

According to the scheme, the pushing component 106 is a wedge-shaped block, so that the rocker arm 201 must rotate by a sufficient angle to enable the rotating shaft 202 to generate sufficient axial displacement to enable the sensing piece 205 to trigger the collision detection element 105, and meanwhile, the elastic piece 204 is arranged to enable the axial displacement of the rotating shaft 202 to be blocked, namely, the collision degree of the collision baffle 203 is small, when the normal running of a vehicle is not influenced, the generated collision force is insufficient to overcome the resistance of the elastic piece 204 to the axial displacement of the rotating shaft 202, so that the collision detection element 105 cannot be triggered, namely, a collision alarm signal cannot be triggered, the condition that a small collision is mistakenly reported is avoided, and the improvement of the precision of derailment detection is facilitated.

Meanwhile, when the collision detection element 105 is triggered after collision, but after a collision object is bounced off the track after collision, the impact force applied to the collision baffle 203 disappears, and the elastic member 204 reversely pushes the rotating shaft 202, so that the rocker arm 201 slides along the inclined surface of the wedge block to reset, the trigger signal of the collision detection element 105 is released, and the system can prompt the collision alarm to be released.

In other embodiments, the detection base 1 is provided with a vertical displacement detection element 103 and a lateral displacement detection element 104, the vertical displacement detection element 103 is used for detecting the vertical displacement of the wheel 4 relative to the steel rail 3 in the vertical direction, and the lateral displacement detection element 104 is used for detecting the lateral displacement of the wheel 4 relative to the steel rail 3 in the horizontal direction. Detection cooperation collision detection of vertical and lateral offset can comparatively accurately judge rail vehicle derailment risk, provides the guide for driving emergency braking. The vertical displacement detecting element 103 and the lateral displacement detecting element 104 may be conventional sensors such as an eddy current displacement sensor, an ultrasonic displacement sensor, or a laser displacement sensor.

Specifically, in the present embodiment, the lateral displacement detecting element 104 is mounted in a mounting hole provided in the detection base 1 below the collision stopper 203, and the detection end thereof faces the rail head outer side surface of the rail 3 in use. A supporting plate 101 is arranged on the left side or the right side of the detection base 1, and a vertical displacement detection element 103 is arranged in a mounting hole formed in the supporting plate 101, and the detection end faces to the upper side of the rail head of the steel rail 3 in use.

In other embodiments, the swing arm 201 is connected to the detection base 1 through a cutting pin 108, and the cutting pin 108 is configured to limit the rotation of the swing arm 201. The collision baffle 203 is collided to a certain degree to cut the shearing pin 108, so that the collision detection can be carried out, the false alarm caused by light collision is further avoided, and meanwhile, the shearing force can be set to control the detection starting degree of the collision force. The shear pin 108 is typically located on the rocker arm 201 below the pivot 202 to facilitate rotational shearing. The shear pin 108 breaks when subjected to a rated shearing force, and therefore, when the impact baffle 203 is subjected to a small degree of impact, the shear pin 108 limits the rotation of the rocker arm 201, so that the impact detection element 105 is not triggered, and unnecessary impact alarm triggering is reduced.

When the collision baffle 203 is subjected to a large collision and is liable to affect the running of the vehicle, the large impact force causes the rocker arm 201 to rotate, so that the shear pin 108 is broken, and then the rocker arm 201 rotates to trigger the collision detection element 105 through the sensing element 205. Therefore, the small collision of the collision baffle 203 is filtered by the shear pin 108, and the occurrence of the situation that collision alarms are frequently and falsely reported is further avoided.

In other embodiments, the detection base 1 is provided with a limit fixture 102 configured to be clamped between the head and the bottom of the rail 3, that is, located at the outer side near the rail web, so that when the rail vehicle is displaced, the limit fixture 102 hooks under the head of the rail 3, thereby providing a certain pulling force, increasing the limit on derailment of the rail vehicle, and facilitating the wheel 4 to be kept on the rail 3 during collision. Moreover, as shown in fig. 7, a protective cover 107 may be attached to a side surface of the detection base 1 by, for example, screws, and is used for hermetically protecting the collision detection element 105, the elastic member 204, the sensing member 205, and the like by the protective cover 107, and at the same time, the protective cover 107 may also cover the upper surface of the supporting plate 101 to increase the protection of the vertical displacement detection element 103.

In addition, as shown in fig. 1 and 2, the invention provides a rail vehicle, which comprises a steel rail 3, a wheel 4, and at least one rail vehicle obstacle-removing and derailing-preventing detection device; the detection base 1 is arranged on a bogie of a railway vehicle; the collision damper 203 is located on the front side in the traveling direction of the wheel 4 and is disposed over the rail 3. In this embodiment, a pair of rail vehicle obstacle-removing and derailing-preventing detection devices is adopted, that is, one device is respectively arranged on the bogies of the wheels 4 on two sides of the rail vehicle.

Finally, the present invention provides a method for detecting a rail vehicle, which can detect an obstacle collision of the rail vehicle, comprising the steps of: when an obstacle hits the collision barrier 203, the collision barrier 203 rotates around the rotating shaft 202 and collides with the pushing member 106; the pushing component 106 applies an axial force along the rotating shaft 202 to the collision baffle 203, the collision baffle 203 drives the rotating shaft 202 to move axially, and the rotating shaft 202 further drives the sensing component 205 to approach the collision detection element 105 and be sensed.

The steps of the specific method for detecting a collision and a derailment of a railway vehicle according to the present embodiment will be described in detail below.

The method comprises the following steps: when an obstacle impacts the collision baffle 203 and rotates the rocker arm 201, the pushing component 106 causes the rocker arm 201 to axially pull the rotating shaft 202, and the sensing component 205 triggers the collision detection element 105, then the system triggers a collision alarm signal, and the driver or the control back desk slows down the vehicle.

And after the barrier is bounced off, the collision baffle 203 is stressed and disappears, the sensing piece 205 is reset, and when the triggering signal of the collision detection element 105 disappears, the system triggers a collision alarm release signal, so that the vehicle can normally run, and when the vehicle enters the station or is detected normally, the detection device is checked according to the alarm record.

Step two: in the running process of the railway vehicle, the vertical displacement detection element 103 and the transverse displacement detection element 104 on the two detection bases 1 perform real-time detection, and whether the detection values of the vertical displacement detection element 103 and the transverse displacement detection element 104 on the two detection bases 1 are within the set range condition is compared.

Specifically, if the detection value of the vertical displacement detection element 103 on the left detection base 1 is H1, the detection value of the lateral displacement detection element 104 is L1, the detection value of the vertical displacement detection element 103 on the right detection base 1 is H2, and the detection value of the lateral displacement detection element 104 is L2;

comparing whether H1 and H2 are both in the range of the set threshold value H, and whether L1 and L2 are in the range of the set threshold value L, if so, the system does not act; if not, the system triggers a derailment alarm signal.

As shown in fig. 6, if a derailment occurs in a railway vehicle, the wheel 4 on one side will cross the steel rail 3, and the wheel 4 is provided with a flange structure to raise the bogie, so that the detection values H1 and L1 of the vertical displacement detection element 103 and the lateral displacement detection element 104 on the one side are increased, and the vehicle is judged to have a tendency of derailment, and then the system triggers a derailment alarm signal, so that the vehicle takes a deceleration measure in time.

In other embodiments, the setting conditions in step two further include that the difference between the values detected by the vertical displacement detecting elements 103 on the two detecting bases 1, and whether the difference between the values detected by the lateral displacement detecting elements 104 on the two detecting bases 1 is within the set threshold range.

If the difference value between H1 and H2 is within the set threshold value delta H, and the difference value between L1 and L2 is within the set threshold value delta L, if so, the system does not act, and if not, the system triggers a derailment alarm signal.

Specifically, as shown in fig. 6, when the wheel 4 on one side gets over the steel rail 3, L1 is gradually increased, and when the value is not greater than the threshold value L, the derailment alarm signal is not triggered, and because the working surface of the wheel 4 is a conical surface, when the vehicle is deflected to one side, the detection value of L2 is reduced, but when the value is not greater than the threshold value L, the derailment alarm signal is also not triggered, and at this time, by calculating that the difference between L1 and L2 is greater than the threshold value Δ L, it is indicated that the vehicle is deflected to one side has an excessively large trend, that is, there is a derailment risk, and thus the derailment alarm signal is triggered in time, so that the vehicle takes a deceleration measure in time, loss caused by derailment or derailment of the rail vehicle is avoided or reduced, and the detection accuracy of the derailment detection as a whole is further improved.

In addition, the setting conditions of the present embodiment and the previous embodiments can be started simultaneously, that is, the derailment warning signal is triggered when any one of the setting conditions of the two embodiments is met.

Meanwhile, after the collision alarm signal in the step one occurs, the set conditions of this embodiment may be started, that is, it is determined whether the difference between H1 and H2 is within the set threshold Δ H, and whether the difference between L1 and L2 is within the set threshold Δ L, which is to determine whether the detection bases 1 on both sides deform after the collision, so that the detection errors of the vertical displacement detection element 103 and the lateral displacement detection element 104 increase, the accuracy of the derailment detection decreases, and the prevention effect cannot be achieved.

If the deformation is too large, the detection base 1 on one side can be directly judged by judging whether the L1 and the L2, and the H1 and the H2 exceed the threshold L and the threshold H of the set condition.

If the deformation is too small, the L1 and the L2 are separately judged, and when the H1 and the H2 are both in the range of the threshold value H and the threshold value L of the set condition, whether the deformation of the detection base 1 occurs cannot be determined, at this moment, whether the deformation of the detection base 1 occurs can be timely judged by confirming whether the difference value of the H1 and the H2 on the two sides is in the set threshold value delta H and whether the difference value of the L1 and the L2 is in the set threshold value delta L, so that the reliability of the vehicle derailment detection and the overall detection precision can be ensured.

The scope of the invention is limited only by the claims. Persons of ordinary skill in the art, having benefit of the teachings of the present invention, will readily appreciate that alternative structures to the structures disclosed herein are possible alternative embodiments, and that combinations of the disclosed embodiments may be made to create new embodiments, which also fall within the scope of the appended claims.

Claims

1. A rail vehicle removes obstacles and anticreep rail detection device includes:

the obstacle-removing and derailing-preventing detection device comprises a detection base (1) used for installing the obstacle-removing and derailing-preventing detection device on a railway vehicle;

the obstacle clearance assembly (2) is used for collision detection of a railway vehicle, and is characterized in that the obstacle clearance assembly (2) comprises a rotating shaft (202), a collision baffle (203) and an elastic piece (204); the rotating shaft (202) is arranged on the detection base (1) and can move along the axial direction of the rotating shaft; the collision baffle (203) is connected with the rotating shaft (202) and is configured to rotate around the rotating shaft (202) when the collision baffle (203) is in contact collision with an obstacle; the elastic piece (204) is mounted on the rotating shaft (202) and is configured to have reverse thrust on the rotating shaft (202) when the rotating shaft (202) moves along the axial direction to enable the elastic piece (204) to deform elastically;

the obstacle evacuation assembly (2) further comprises a collision detection element (105) and an ejecting component (106) which are arranged on the detection base (1); the pushing component (106) is configured to push the rotating shaft (202) to move axially and enable the elastic piece (204) to deform elastically when the collision baffle (203) rotates due to collision; the collision detection element (105) is configured in such a way that when the collision baffle (203) is collided to cause the rotating shaft (202) to move axially, a sensing piece (205) arranged on the rotating shaft (202) can be detected by the collision detection element (105).

2. The rail vehicle obstacle-clearing and derailing-preventing detection device according to claim 1, wherein the rotating shaft (202) penetrates through the left and right opposite side surfaces of the detection base (1), one end of one side of the detection base (1) is connected with the collision baffle (203) through the rocker arm (201), and the rotating shaft (202) of the other side of the detection base (1) is sleeved with the elastic member (204).

3. The rail vehicle obstacle and derailment prevention detection device according to claim 2, wherein the elastic member (204) is a spring, and a sensing member (205) is installed on the rotating shaft (202) at an outer end side of the elastic member (204); and the detection base (1) on the same side of the sensing piece (205) is provided with a collision detection element (105).

4. The rail vehicle obstacle-removing and derailing-preventing detection device according to claim 2, wherein the pushing member (106) is mounted on the detection base (1) on the side of the rocker arm (201) and has an inclined working surface cooperating with the rocker arm (201), and when the collision baffle (203) contacts with an obstacle and rotates in a collision manner, the inclined working surface of the pushing member (106) contacts with the rocker arm (201) and presses the rocker arm (201), so that the rocker arm drives the rotating shaft (202) to move axially.

5. The rail vehicle obstacle and derailment prevention detection device according to any one of claims 1 to 4, wherein the collision barrier (203) has a collision surface disposed along a forward direction of the rail vehicle, the collision surface being disposed at an angle β to the forward direction of the rail vehicle, and having a guiding function for guiding the obstacle to an outside of the rail (3) in case of collision.

6. The rail vehicle obstacle and derailment prevention detection device according to any one of claims 1-4, wherein a vertical displacement detection element (103) and a lateral displacement detection element (104) are mounted on the detection base (1), the vertical displacement detection element (103) is used for detecting a vertical offset of the wheel (4) relative to the rail (3) in a vertical direction, and the lateral displacement detection element (104) is used for detecting a lateral offset of the wheel (4) relative to the rail (3) in a horizontal direction.

7. The rail vehicle obstacle and derailment prevention detection device according to claim 4, wherein the swing arm (201) is connected with the detection base (1) through a shear pin (108), and the shear pin (108) is configured to limit rotation of the swing arm (201).

8. The rail vehicle obstacle-clearance and derailment-prevention detection device of claim 6, wherein the detection base (1) is provided with a limit fixture block (102) configured to be clamped between a rail head and a rail bottom of the steel rail (3).

9. A rail vehicle comprising a rail (3) and a wheel (4), characterized in that it further comprises at least one rail vehicle obstacle and derailment prevention detection device according to any of claims 1-8; the detection base (1) is arranged on a bogie of a railway vehicle; the collision baffle (203) is positioned on the front side of the driving direction of the wheel (4) and is arranged above the steel rail (3) in a crossing manner.

10. A method for detecting a rail vehicle according to claim 9, wherein the rail vehicle is subjected to obstacle collision detection, comprising the steps of: when an obstacle impacts the collision baffle (203), the collision baffle (203) rotates around the rotating shaft (202); the pushing component (106) exerts axial force along the rotating shaft (202) on the collision baffle (203), the collision baffle (203) drives the rotating shaft (202) to move axially, and the rotating shaft (202) further drives the sensing piece (205) to approach the collision detection element (105) and be sensed.