A contact obstacle detection device for rail vehicles

Abstract

The present invention discloses a contact-type obstacle detection device for rail vehicles, comprising a detection beam, mounting seats symmetrically provided at both ends of the detection beam, a clamping assembly connected to one side of the mounting seat, a swing arm connected to the middle of the clamping assembly, a fixed support sleeve provided on the outer side of the swing arm, a rubber node provided on the top of the swing arm, a travel switch provided in the middle of the swing arm, and a stop plate connected to the inner side of the fixed support. The present invention has a simple, reasonable and stable structure, is simple to operate, and is easy to install and maintain, and is easy to adjust. It can not only reduce false triggering caused by abnormal vibration, but also utilize the rubber structure to consume vibration energy, reduce the influence of long-term vibration conditions on components such as the detection beam, increase the service life of the components, enhance the practicality of the device, reduce the consumption cost of the enterprise, bring higher profits to the enterprise, avoid fatigue damage to components such as the detection beam due to long-term severe vibration conditions, and shorten their service life.

Description

Technical Field

[0001] The present invention relates to the field of rail transportation technology, and in particular to a contact-type obstacle detection device for a rail vehicle. Background Art

[0002] Fully automated operation is the development trend of urban rail transit systems. As trains transition from driverless to autonomous, measures must be taken to reduce the risk of collisions with obstacles within the track limits. Onboard obstacle detection devices can mitigate the risk of collisions between trains and obstacles on the track, thus preventing major accidents. Contact-type obstacle detection devices transfer the energy of an obstacle collision through a mechanical system, triggering sensors to generate a signal that is transmitted to the electrical system, which then disconnects the train's brake safety circuit, initiating an emergency brake.

[0003] Among the current technologies related to contact obstacle detection devices, most use leaf springs or elastic brackets, which have a structure in which one end is fixed and the other end is in an unconstrained free state. The free end is connected to a detection beam. When hit by an obstacle on the track, the detection beam drives the leaf spring or elastic bracket to deform and form a certain displacement, thereby triggering the travel switch to generate an alarm signal.

[0004] For example, Chinese patent CN109941302A discloses an obstacle detection device comprising an obstacle clearing beam, a detector mounted on each end of the beam, a safety shield mounted on the detector, a fixed support mounted on the back of the safety shield, and a fixed support fixedly connected to the bogie at the front of the train; an electrical connection box mounted on the bogie at the front of the train, electrically connected to the detector, and communicatively connected to the train's braking system or central control system. When the obstacle is small, the obstacle clearing beam can remove the small obstacle; when the obstacle clearing beam detects an obstacle with a mass greater than a set mass, it can immediately send a signal to the braking system or central control system to activate the train's braking system and reduce damage to the train caused by the obstacle. A trigger plate in the device is connected to the obstacle clearing beam via a spring plate, and the trigger plate is connected to a microswitch via a trigger rod. When the trigger plate is displaced, the trigger plate drives the trigger rod to rotate, triggering the microswitch. However, in this patent, since the detection beam is installed at the unconstrained end of the leaf spring, the vibration of the fixed end of the obstacle detection device during vehicle driving will be transmitted to the detection beam through the leaf spring or elastic bracket. Once the vibration intensifies, the deformation of the leaf spring increases, and the travel switch may be triggered incorrectly.

[0005] For example, Chinese patent CN107628066A discloses an obstacle and derailment monitoring device for rail vehicles, comprising: a mounting base, a bracket arranged on the mounting base, an obstacle trigger and a derailment trigger being provided on the bracket, a first limiter and a second limiter arranged in parallel on the bracket; a leaf spring, the leaf spring comprising a body, a first bent portion formed at one end of the body, a second bent portion formed at the other end of the body, the body being overlapped on the first limiter, the front side of the first bent portion being against the second limiter, the rear side of the first bent portion being against the first limiter, and the second bent portion being connected to the bracket; and a collision beam, the collision beam being connected to the lower end of the first bent portion. The device is used for an obstacle and derailment monitoring device for rail vehicles, eliminates the possibility of false alarms, improves the fatigue strength of the collision beam suspension point, and the limiter does not affect the displacement triggering alarm of the detection beam in the event of obstacle collision and derailment.

[0006] However, although this patent can reduce the false alarm rate to a certain extent by setting a limiter, its structure is relatively complex and difficult to install and maintain. In addition, due to the lack of damping components, the vibration energy generated by the fixed end of the device cannot be consumed in the process of being transmitted to the collision beam. Such long-term severe vibration conditions can easily cause fatigue damage to components such as the detection beam, reducing its service life.

[0007] Currently, no effective solutions have been proposed for the problems in related technologies. Summary of the Invention

[0008] In response to the problems in the related art, the present invention proposes a contact-type obstacle detection device for a rail vehicle to overcome the above-mentioned technical problems existing in the existing related art.

[0009] To this end, the specific technical solutions adopted in the present invention are as follows:

[0010] A rail vehicle contact obstacle detection device includes a detection beam, with mounting seats symmetrically provided at both ends of the detection beam, a clamping assembly connected to one side of the mounting seat, a rocker arm connected to the middle of the clamping assembly, a fixed support sleeved on the outer side of the rocker arm, a rubber node provided on the top of the rocker arm, a travel switch provided in the middle of the rocker arm, and a stop plate connected to the inner side of the fixed support.

[0011] Furthermore, in order to ensure the stability of the device during detection and avoid tilting, a through hole is opened on the surface of the mounting seat, a support plate is provided on one side of the mounting seat, and the bottom end of the support plate is installed on the top end of the detection beam.

[0012] Furthermore, in order to ensure the stability of the pendulum arm during operation and avoid its displacement, which would make it impossible to carry out the detection work, the clamping assembly includes two groups of fixed clamps symmetrically arranged at the bottom of the pendulum arm, and the two groups of fixed clamps are connected to the mounting seat by a number of nuts; a semicircular groove is provided on the side of the fixed clamp close to the pendulum arm, and a V-shaped serrated groove is provided on the inner wall of the semicircular groove.

[0013] Furthermore, in order to enable the pendulum rod to achieve height adjustment in cooperation with the V-shaped serrated groove, enhance the service life of the detection device, reduce fatigue damage caused, and improve detection efficiency, the bottom of the pendulum rod is provided with V-shaped serrated teeth that cooperate with the V-shaped serrated groove, and a circular mounting hole is opened at the top of the pendulum rod, and the rubber node is installed inside the circular mounting hole.

[0014] Furthermore, in order to drive the rocker arm to rotate when the detection beam is hit, the rocker arm can drive the travel switch to move, so the travel switch is connected to the rocker arm by providing a mounting hole.

[0015] Furthermore, in order to ensure the stability of the rocker arm and the stop plate during operation, avoid the inability to carry out detection work due to unstable installation, and ensure that the rocker arm can swing within the range of the oblong hole, thereby limiting the rocker arm, a groove is provided at the top of the fixed support, and an oblong hole is provided at the bottom end of the fixed support. A mounting plate is provided on one side of the interior of the fixed support, and a through hole is provided through the mounting plate on one side of the fixed support; the stop plate is installed on the interior of the fixed support through a hexagonal nut passing through the through hole; multiple groups of through holes are provided on one side of the interior of the fixed support, and hexagonal nuts are provided on the outside of the through holes.

[0016] Furthermore, in order to enable the rubber node to be fixedly installed, the rubber structure can be used to consume vibration energy, reduce the impact of long-term vibration conditions on the detection beam, and improve the life of the device, a fixing seat is provided on both sides of the rubber node, and the fixing seat is installed on the top of the fixed support through a hexagonal nut.

[0017] Furthermore, in order to trigger the travel switch to generate an alarm signal when the travel switch collides with the stop plate, the contact direction of the travel switch is toward the stop plate, and the stop plate is an L-shaped structure.

[0018] The beneficial effects of the present invention are:

[0019] 1. The present invention provides an obstacle detection device, the main body of which adopts a rocker arm with an elastic rubber node at one end. When the detection beam is hit, the rocker arm is driven to rotate, and the rocker arm drives the travel switch to be displaced until the travel switch hits the stop plate, triggering the travel switch to generate an alarm signal. The invention has a simple, reasonable and stable structure, simple operation, convenient installation and maintenance, and easy adjustment. It can not only reduce the false triggering caused by abnormal vibration, but also extend the service life of the detection device, reduce fatigue damage caused, and improve detection efficiency.

[0020] 2. The present invention sets a rubber node between the fixed support, the rocker arm and the detection beam, and the V-shaped serrations on the rocker arm cooperate with the V-shaped serrations on the clamping assembly, so as to achieve height adjustment. The damping characteristics of the rubber are utilized to reduce the vibration transmitted from the fixed support to the trigger mechanism, thereby reducing the possibility of false triggering due to abnormal vibration.

[0021] 3. The present invention utilizes the rubber structure to consume vibration energy, reduces the impact of long-term vibration conditions on components such as the detection beam, increases the service life of the components, enhances the practicality of the device, reduces the consumption cost of the enterprise, brings higher profits to the enterprise, and avoids fatigue damage to components such as the detection beam caused by long-term severe vibration conditions, thereby reducing their service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0023] Figure 1 2 is a schematic structural diagram of a contact-type obstacle detection device for a rail vehicle according to an embodiment of the present invention;

[0024] Figure 2 yes Figure 1 A partial enlarged view of point A in the middle;

[0025] Figure 3 is a schematic exploded perspective view of a contact-type obstacle detection device for a rail vehicle according to an embodiment of the present invention;

[0026] Figure 4 yes Figure 3 A partial enlarged view of point B in the middle.

[0027] In the picture:

[0028] 1. Detection beam; 2. Mounting seat; 201. Through hole 1; 202. Support plate; 3. Clamping assembly; 301. Fixing clamp; 302. Nut; 303. Semicircular groove; 304. V-shaped serrated groove; 4. Rocker arm; 401. V-shaped serrated teeth; 402. Circular mounting hole; 403. Mounting hole; 5. Fixing support; 501. Groove; 502. Oblong hole; 503. Mounting plate; 504. Through hole; 505. Hexagonal nut 1; 506. Through hole 2; 507. Hexagonal nut 2; 6. Rubber node; 601. Fixing seat; 602. Hexagonal nut 3; 7. Travel switch; 8. Stop plate. DETAILED DESCRIPTION

[0029] To further illustrate each embodiment, the present invention provides drawings, which are part of the disclosure of the present invention. They are mainly used to illustrate the embodiments and can be used in conjunction with the relevant descriptions in the specification to explain the operating principles of the embodiments. By referring to these contents, ordinary technicians in this field should be able to understand other possible implementation methods and advantages of the present invention. The components in the figures are not drawn to scale, and similar component symbols are generally used to represent similar components.

[0030] According to an embodiment of the present invention, a contact-type obstacle detection device for a rail vehicle is provided.

[0031] The present invention will now be further described with reference to the accompanying drawings and specific embodiments. Figures 1-4 As shown, the rail vehicle contact obstacle detection device according to an embodiment of the present invention includes a detection beam 1, with mounting seats 2 symmetrically provided at both ends of the detection beam 1, a clamping assembly 3 connected to one side of the mounting seat 2, a rocker arm 4 connected to the middle of the clamping assembly 3, a fixed support 5 sleeved on the outer side of the rocker arm 4, a rubber node 6 provided on the top of the rocker arm 4, a travel switch 7 provided in the middle of the rocker arm 4, and a stop plate 8 connected to the inner side of the fixed support 5.

[0032] With the aid of the above technical solution, the present invention provides an obstacle detection device, the main body of which adopts a rocker arm 4 with an elastic rubber node 6 at one end. When the detection beam 1 is hit, the rocker arm 4 is driven to rotate, and the rocker arm 4 drives the limit switch 7 to generate displacement until the limit switch 7 hits the stop plate 8, triggering the limit switch 7 to generate an alarm signal. The present invention has a simple, reasonable and stable structure, simple operation, convenient installation and maintenance, and easy adjustment. It can not only reduce the false triggering caused by abnormal vibration, but also extend the service life of the detection device, reduce the fatigue damage caused, and improve the detection efficiency. By setting a fixed support 5, setting a rubber node 6 between the rocker arm 4 and the detection beam 1, the rocker arm 4 cooperates with the clamping assembly 3, so that its height can be adjusted, and the damping characteristics of the rubber are used to reduce the vibration transmitted from the fixed support 5 to the trigger mechanism, thereby reducing the false triggering caused by abnormal vibration. At the same time, the rubber structure is used to consume vibration energy, reduce the impact of long-term vibration conditions on components such as the detection beam 1, increase the service life of the components, enhance the practicality of the device, reduce the company's consumption costs, bring higher profits to the company, and avoid fatigue damage to components such as the detection beam 1 due to long-term severe vibration conditions, thereby reducing their service life.

[0033] In one embodiment, for the above-mentioned mounting base 2, a through hole 201 is provided on the surface of the mounting base 2, a support plate 202 is provided on one side of the mounting base 2, and the bottom end of the support plate 202 is installed on the top end of the detection beam 1, so as to ensure the stability of the device during the detection work and avoid tilting.

[0034] In one embodiment, for the above-mentioned clamping assembly 3, the clamping assembly 3 includes two groups of fixed clamps 301 symmetrically arranged at the bottom of the pendulum rod 4, and the two groups of fixed clamps 301 are connected to the mounting base 2 through a number of nuts 302; a semicircular groove 303 is provided on the side of the fixed clamp 301 close to the pendulum rod 4, and a V-shaped serrated groove 304 is provided on the inner wall of the semicircular groove 303, so as to ensure the stability of the pendulum rod 4 during operation and prevent it from displacement, which makes it impossible to carry out the detection work.

[0035] In one embodiment, for the above-mentioned pendulum rod 4, a V-shaped serration 401 that cooperates with the V-shaped serration groove 304 is provided at the bottom of the pendulum rod 4, a circular mounting hole 402 is opened at the top of the pendulum rod 4, and the rubber node 6 is installed inside the circular mounting hole 402, so that the pendulum rod 4 can achieve height adjustment in cooperation with the V-shaped serration groove 304, thereby enhancing the service life of the detection device, reducing fatigue damage, and improving detection efficiency.

[0036] In one embodiment, for the above-mentioned limit switch 7, the limit switch 7 is connected to the rocker arm 4 by setting a mounting hole 403, so that when the detection beam 1 is hit, the rocker arm 4 is driven to rotate, and the rocker arm 4 can drive the limit switch 7 to generate displacement.

[0037] In one embodiment, for the above-mentioned fixed support 5, a groove 501 is provided at the top end of the fixed support 5, an oblong hole 502 is provided at the bottom end of the fixed support 5, a mounting plate 503 is provided on the inner side of the fixed support 5, and a through hole 504 is provided on one side of the fixed support 5 through the mounting plate 503; the stop plate 8 is installed on the inside of the fixed support 5 through the through hole 504 via a hexagonal nut 505; a plurality of groups of through holes 506 are provided on one side of the inner side of the fixed support 5, and hexagonal nuts 507 are provided on the outer side of the through holes 506, so as to ensure the stability of the rocker arm 4 and the stop plate 8 during operation, avoid the inability to carry out detection work due to unstable installation, ensure that the rocker arm 4 can swing within the range of the oblong hole 502, and play a role in limiting the rocker arm 4.

[0038] In one embodiment, the rubber node 6 is provided with a fixing seat 601 on both sides of the rubber node 6. The fixing seat 601 is mounted on the top of the fixed support 5 via a hexagonal nut 602. This allows the rubber node 6 to be fixedly installed, utilizing the rubber structure to dissipate vibration energy, reducing the impact of long-term vibration conditions on the detection beam 1 and improving the device's lifespan. Furthermore, during actual use, the rubber node 6 is configured with a certain radial stiffness and torsional stiffness.

[0039] In one embodiment, for the above-mentioned limit switch 7, the contact direction of the limit switch 7 is toward the stop plate 8, and the stop plate 8 is an L-shaped structure, so that when the limit switch 7 collides with the stop plate 8, the limit switch 7 can be triggered to generate an alarm signal.

[0040] In order to facilitate understanding of the above technical solutions of the present invention, the working principle or operation mode of the present invention in actual process is described in detail below.

[0041] In actual application, when obstacle detection is required, when the detection beam 1 is hit by an obstacle during the detection process, it will drive the mounting seat 2 and the clamping assembly 3 on one side thereof to move. Since a rocker rod 4 with an elastic rubber node 6 at one end is sleeved on the middle part of the clamping assembly 3 (the rubber node 6 is provided with a certain radial stiffness and torsional stiffness), the rocker rod 4 is driven to rotate. Since the rocker rod 4 can swing within the length range of the oblong hole 502, and the V-shaped serrated teeth 401 on the rocker rod 4 cooperate with the V-shaped serrated grooves 304 on the clamping assembly 3, its height can be adjusted, and then the rocker rod 4 drives the travel switch 7 installed on its outside to displace until the travel switch 7 collides with the stop plate 8, triggering the travel switch 7 to generate an alarm signal, thereby completing the obstacle detection work.

[0042] In summary, with the aid of the above technical solution of the present invention, the present invention provides an obstacle detection device, the main body of which adopts a rocker arm 4 with an elastic rubber node 6 at one end. When the detection beam 1 is hit, the rocker arm 4 is driven to rotate, and the rocker arm 4 drives the limit switch 7 to generate displacement until the limit switch 7 hits the stop plate 8, triggering the limit switch 7 to generate an alarm signal. The present invention has a simple, reasonable and stable structure, simple operation, convenient installation and maintenance, and is easy to adjust. It can not only reduce the false triggering caused by abnormal vibration, but also extend the service life of the detection device, reduce the fatigue damage caused, and improve the detection efficiency. The present invention sets a fixed support 5, sets a rubber node 6 between the rocker arm 4 and the detection beam 1, and the V-shaped serrated teeth 401 on the rocker arm 4 cooperate with the V-shaped serrated grooves 304 on the clamping assembly 3, so that its height can be adjusted. At the same time, the damping properties of the rubber are utilized to reduce the vibration transmitted from the fixed support 5 to the trigger mechanism, thereby reducing the false triggering caused by abnormal vibration. The present invention utilizes a rubber structure to consume vibration energy, reduces the impact of long-term vibration conditions on components such as the detection beam 1, increases the service life of the components, enhances the practicality of the device, reduces the consumption cost of the enterprise, brings higher profits to the enterprise, and avoids fatigue damage to components such as the detection beam 1 due to long-term severe vibration conditions, thereby reducing their service life.

[0043] In the present invention, unless otherwise clearly stipulated and limited, the terms "install", "set", "connect", "fix", "screw" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal connection of two elements or the interaction relationship between two elements. Unless otherwise clearly defined, ordinary technicians in this field can understand the specific meanings of the above terms in the present invention according to the specific circumstances.

[0044] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A contact obstacle detection device for a rail vehicle, comprising a detection beam (1), characterized in that: The two ends of the detection beam (1) are symmetrically provided with mounting seats (2), one side of the mounting seat (2) is connected to a clamping assembly (3), the middle of the clamping assembly (3) is connected to a swing rod (4), the outer side of the swing rod (4) is sleeved with a fixed support (5), the top of the swing rod (4) is provided with a rubber node (6), the middle of the swing rod (4) is provided with a travel switch (7), and the inner side of the fixed support (5) is connected to a stop plate (8); The top end of the fixed support (5) is provided with a groove (501), the bottom end of the fixed support (5) is provided with an oblong hole (502), an inner side of the fixed support (5) is provided with a mounting plate (503), and a through hole (504) is provided on one side of the fixed support (5) penetrating the mounting plate (503); The stop plate (8) is installed inside the fixed support (5) by passing through the through hole (504) through a hexagonal nut (505); A plurality of groups of second through-holes (506) are provided on one side of the interior of the fixed support (5), and a second hexagonal nut (507) is provided on the outside of the second through-holes (506).

2. A rail vehicle contact obstacle detection device according to claim 1, characterized in that: A through hole (201) is provided on the surface of the mounting seat (2), a support plate (202) is provided on one side of the mounting seat (2), and the bottom end of the support plate (202) is mounted on the top end of the detection beam (1).

3. The rail vehicle contact obstacle detection device according to claim 2, characterized in that: The clamping assembly (3) comprises two groups of fixed clamping blocks (301) symmetrically arranged at the bottom of the swing rod (4), and the two groups of fixed clamping blocks (301) are connected to the mounting seat (2) via a plurality of nuts (302); A semicircular groove (303) is provided on one side of the fixed clamping block (301) close to the swing rod (4), and a V-shaped sawtooth groove (304) is provided on the inner wall of the semicircular groove (303).

4. The rail vehicle contact obstacle detection device according to claim 3, characterized in that: The bottom of the swing rod (4) is provided with a V-shaped sawtooth (401) that matches the V-shaped sawtooth groove (304), the top of the swing rod (4) is provided with a circular mounting hole (402), and the rubber node (6) is installed inside the circular mounting hole (402).

5. The rail vehicle contact obstacle detection device according to claim 4, characterized in that: The travel switch (7) is connected to the rocker (4) by providing a mounting hole (403).

6. The rail vehicle contact obstacle detection device according to claim 5, characterized in that: A fixing seat (601) is provided on both sides of the rubber node (6), and the fixing seat (601) is installed on the top end of the fixing support (5) through a hexagonal nut (602).

7. The rail vehicle contact obstacle detection device according to claim 6, characterized in that: The contact direction of the travel switch (7) faces the stop plate (8), and the stop plate (8) is an L-shaped structure.

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