Self-adjusting obstacle detection cross beam with sweeping function and high protection function

Abstract

The invention relates to the field of railway vehicles, and discloses a self-adjusting, sweeping and high-protection obstacle detection cross beam which comprises a cross beam body, and a detection assembly is arranged on one side of the cross beam body and used for detecting obstacles in front of the cross beam body; the cleaning assembly is located at the top end of the beam and used for removing surface foreign matter at the top end of the beam. And the turning repair auxiliary assembly is located at the bottom end of the cross beam and used for adjusting the position of the detection assembly when the wheel is turned. According to various functional requirements, the robot has the advantages of being capable of transmitting obstacle collision signals, dynamically adjusting the height away from the rail surface, resisting hitting in the advancing direction, achieving a modular replacement maintenance mode, automatically cleaning surface attachments and the like, the requirement for maintenance-free within the service life is met, and light weight and low cost are achieved. And a new concept is provided for subsequent design and installation of a passive obstacle detection device.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of rail vehicles, in particular to a self-adjusting, sweeping and high-protection obstacle detection beam. BACKGROUND

[0002] With the continuous and rapid development of rail transportation, fully automatic unmanned trains have become a trend of development of urban rail transportation. In order to ensure the safe operation of the vehicle, various safety devices need to be installed at the train running part, such as passive obstacle detection devices. When the obstacle collides with the beam of the detection device, the deformation and collision energy generated by the obstacle collides with the beam are converted into an electrical signal, and the system further outputs an emergency braking signal.

[0003] The existing passive obstacle detection device structure is mostly a simple cast support combined with a multi-section steel welded beam square tube. It is easy to appear failure such as fracture in response to harsh track vibration environment, has short service life and cannot be predicted, and has the defects of complex installation, many components, manual height adjustment, and no impact resistance, which affect its use effect.

[0004] At present, no effective solution has been proposed for the problems in the related art. SUMMARY

[0005] In view of the problems in the related art, the present application proposes a self-adjusting, sweeping and high-protection obstacle detection beam to overcome the above technical problems existing in the prior art.

[0006] To this end, the specific technical solutions adopted by the present application are as follows: A self-adjusting, sweeping and high-protection obstacle detection beam, comprising: a beam, one side of the beam is provided with a detection assembly for detecting obstacles in front of the beam; a sweeping assembly located at the top end of the beam for removing surface foreign matter at the top end of the beam; a grinding auxiliary assembly located at the bottom end of the beam for adjusting the position of the detection assembly when the wheel is ground.

[0007] Further, in order to block the foreign matter in the advancing direction, prevent rain, snow, sand and the like from entering the electrical components to affect signal transmission, the detection assembly comprises an obstacle detection plate arranged on one side of the cross beam, and a pressure switch and a pressure relief spring are sequentially arranged between the inner side of the obstacle detection plate and the cross beam; the obstacle detection plate is of an L-shaped structure, one end of the obstacle detection plate is located at the side edge of the cross beam, and the other end of the obstacle detection plate is located at the bottom of the cross beam; one end of the cross beam is provided with a sensor, the sensor is electrically connected with the pressure switch, and the pressure signal of the pressure switch is transmitted to the train body; when an obstacle appears in front of the train, the obstacle contacts the obstacle detection plate and generates a collision force; the collision force causes the displacement of the obstacle detection plate and generates a pressure signal of the pressure switch, wherein the pressure relief spring is used for buffering the obstacle detection plate.

[0008] Further, in order to push away the foreign matter on the surface of the cross beam, the cleaning assembly comprises an electromagnet arranged in the middle of the cross beam, and cleaning square rings matched with the shape of the cross beam are arranged on both sides of the electromagnet; one end of the cleaning square ring away from the electromagnet and located at the end of the cross beam is provided with a fixing seat, and a tension spring is connected between the fixing seat and the cleaning square ring; the electromagnet is sleeved on the outer side of the cross beam, and the electromagnet is in interference fit with the cross beam.

[0009] Further, in order to realize accurate adjustment of the obstacle detection plate during wheel turning, the turning auxiliary assembly comprises a piston rod mounting hole arranged at the bottom of the obstacle detection plate, and a piston rod is arranged at the bottom end of the cross beam and located in the piston rod mounting hole; when the train is turned, the piston rod spring is initially extended outward to make the piston rod located at the farthest position; the piston side of the cross beam is inflated through an external pipeline; based on the conversion relationship between the air pressure of inflation and the stroke of the piston rod spring, the air pressure drives the piston to move to realize the position adjustment of the obstacle detection plate.

[0010] Further, in order to connect the cross beam with the support and buffer and limit the movement of the cleaning assembly, the end of the cross beam is provided with a transition plate, one end of the transition plate close to the middle of the cross beam is provided with a pipeline structure, and the middle of the cross beam is provided with a stop pad.

[0011] The beneficial effects of the present application are: The present application solves the problems of complex structure, difficult maintenance, low automation degree, high replacement cost, difficulty in adapting to complex track operation conditions, short failure period and the like of the passive obstacle detection device of the unmanned train. After combining various functional requirements, the present application discloses a cross beam assembly which has the functions of transmitting obstacle collision signals, dynamically adjusting the height from the track surface, resisting impact in the advancing direction, maintaining the modular replacement mode, automatically cleaning the surface attachments and the like, meets the requirements of maintenance-free during the service life, and realizes lightweight, thereby providing a new concept for the design and installation of the subsequent passive obstacle detection device. BRIEF DESCRIPTION OF DRAWINGS

[0012] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the accompanying drawings needed in the embodiments will be briefly introduced as follows. Obviously, the drawings in the following description only constitute some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained based on these drawings without creative effort.

[0013] Figure 1 is a structural schematic view of a self-adjusting obstacle detection beam with cleaning and high protection according to an embodiment of the present application; Figure 2 is Figure 1 is a local enlarged view of A in FIG. 1; Figure 3 is a structural schematic view of an electromagnet in a self-adjusting obstacle detection beam with cleaning and high protection according to an embodiment of the present application; Figure 4 is a structural schematic view of an obstacle detection plate in a self-adjusting obstacle detection beam with cleaning and high protection according to an embodiment of the present application; Figure 5 is a structural schematic view of a turning and repairing auxiliary assembly in a self-adjusting obstacle detection beam with cleaning and high protection according to an embodiment of the present application; Figure 6 is a structural schematic view of a piston rod mounting hole in a self-adjusting obstacle detection beam with cleaning and high protection according to an embodiment of the present application; Figure 7 is a position schematic view of a piston rod spring and a piston in a self-adjusting obstacle detection beam with cleaning and high protection according to an embodiment of the present application.

[0014] In the drawings: 1, beam; 2, detection assembly; 201, obstacle detection plate; 202, pressure switch; 203, pressure relief spring; 3, cleaning assembly; 301, electromagnet; 302, cleaning square ring; 303, fixed seat; 304, tension spring; 4, turning and repairing auxiliary assembly; 401, piston rod mounting hole; 402, piston rod; 5, sensor; 6, transition plate; 7, pipeline structure; 8, stopper pad; 9, piston rod spring; 10, piston; 11, air path hole. DETAILED DESCRIPTION

[0015] To further illustrate the embodiments, the present application provides the accompanying drawings, which are part of the disclosure of the present application, mainly used to illustrate the embodiments, and can be explained with the related description of the specification to understand the operation principle of the embodiments. With reference to these contents, those skilled in the art should understand other possible implementations and advantages of the present application. The components in the drawings are not drawn to scale, and similar component symbols are usually used to represent similar components.

[0016] According to the embodiments of the present application, a self-adjusting, sweeping and high-protection obstacle detection beam is provided.

[0017] The present application will be further described in conjunction with the drawings and specific embodiments, as shown in the drawings and specific embodiments, according to the embodiments of the present application, a self-adjusting, sweeping and high-protection obstacle detection beam is provided. Figures 1-7 As shown, according to the embodiments of the present application, a self-adjusting, sweeping and high-protection obstacle detection beam is provided. The beam 1 is provided with a detection assembly 2 on one side of the beam 1 for detecting obstacles in front of the beam 1; a sweeping assembly 3 is located at the top end of the beam 1 for removing surface foreign matter at the top end of the beam 1; a grinding auxiliary assembly 4 is located at the bottom end of the beam 1 for adjusting the position of the detection assembly 2 when the wheel is ground.

[0018] With the above-mentioned scheme, the present application discloses a new obstacle detection beam 1, which integrates obstacle signal transmission, automatic adjustment of distance from the rail surface, automatic sweeping and protection of surface state, replacing the existing structure and providing a longer service life.

[0019] In one embodiment, for the above-mentioned detection assembly 2, the detection assembly 2 includes an obstacle detection plate 201 arranged on one side of the beam 1, and a pressure switch 202 and a pressure relief spring 203 are arranged between the inner side of the obstacle detection plate 201 and the beam 1 in sequence; the obstacle detection plate 201 is of L-shaped structure, one end of the obstacle detection plate 201 is located at the side edge of the beam 1, and the other end of the obstacle detection plate 201 is located at the bottom of the beam 1; one end of the beam 1 is provided with a sensor 5, the sensor 5 is electrically connected with the pressure switch 202, and transmits the pressure signal of the pressure switch 202 to the vehicle body of the train; when an obstacle appears in front of the train, the obstacle contacts the obstacle detection plate 201 and generates a collision force; through the collision force, the obstacle detection plate 201 is displaced, and the pressure switch 202 generates a pressure signal, wherein the pressure relief spring 203 is used to buffer the obstacle detection plate 201.

[0020] The obstacle detection plate 201 can block impacts from foreign objects in the direction of travel, preventing rain, snow, sand, etc. from entering the electrical components and affecting signal transmission. Simultaneously, the obstacle detection plate 201 employs a special coating to enhance its surface impact resistance and can be replaced periodically, achieving high protective properties. The pressure switch 202 and the pressure-reducing spring 203 can acquire the pressure signal generated by the obstacle collision force, providing a buffering protection for the obstacle detection plate 201.

[0021] In one embodiment, the cleaning assembly 3 includes an electromagnet 301 disposed in the middle of the crossbeam 1. Cleaning square rings 302 that conform to the shape of the crossbeam 1 are disposed on both sides of the electromagnet 301. A rubber pad is placed between the cleaning square rings 302 and the crossbeam 1. A fixing seat 303 is disposed at the end of the cleaning square rings 302 away from the electromagnet 301 and at the end of the crossbeam 1. A tension spring 304 is connected between the fixing seat 303 and the cleaning square rings 302. The electromagnet 301 is sleeved on the outside of the crossbeam 1 and the electromagnet 301 is interference-fitted with the crossbeam 1.

[0022] When the electromagnet 301 is energized, the cleaning ring 302 moves the rubber pad toward the center under the action of magnetic force, pushing away foreign objects on the surface of the crossbeam 1 in the process.

[0023] In one embodiment, the aforementioned wheel turning auxiliary component 4 includes a piston rod mounting hole 401 located at the bottom of the obstacle detection plate 201, and a piston rod 402 located at the bottom end of the crossbeam 1 within the piston rod mounting hole 401. When the train is wheel turning, the piston rod spring 9 initially extends outward to position the piston rod 402 at its furthest point. Air is supplied to the piston side of the crossbeam 1 through an external pipeline. Based on the conversion relationship between the air pressure and the piston rod spring stroke, the air pressure is controlled to move the piston 10, thereby adjusting the position of the obstacle detection plate 201. Initially, the piston 10 is pushed to its furthest position under the action of the piston rod spring 9. When adjustment is required, compressed air enters the piston rod cavity through the air passage 11, pushing the piston 10 upward and compressing the piston rod spring 9. Both the piston 10 and the cavity are located inside the hollow crossbeam 1.

[0024] The turning auxiliary component 4, combined with the control of the piston rod spring, piston, and air pressure, enables precise adjustment of the obstacle detection plate 201, avoiding the complex operation of traditional obstacle detection devices that rely on manual adjustment of the position of the toothed plate to adjust the height.

[0025] In one embodiment, for the aforementioned crossbeam 1, a transition plate 6 is provided at the end of the crossbeam 1, and a pipeline structure 7 is provided at one end of the transition plate 6 near the middle of the crossbeam 1; a stop block 8 is provided in the middle of the crossbeam 1.

[0026] The transition plate 6 connects the crossbeam 1 to the bracket. The transition plate 6 can be designed with any interface. The stop pad 8 buffers and limits the movement of the cleaning component 3.

[0027] To facilitate understanding of the above technical solutions of the present invention, the working principle or operation method of the present invention in actual process will be described in detail below.

[0028] This invention uses a hollow, sealed crossbeam 1 as the main body. The crossbeam 1 itself is made of non-metallic material, and an electromagnet 301 is installed in the middle. The electromagnet 301 is fitted into the middle of the crossbeam 1 by an interference fit. The exterior of the electromagnet 301 includes an impact-resistant material. On both sides of the electromagnet 301 are cleaning square rings 302 that match the shape of the crossbeam 1. These rings are made of iron or other materials. A rubber pad is placed between the cleaning square rings 302 and the crossbeam 1. Normally, the cleaning square rings 302 are restricted to their lateral positions by the tension of the left-side tension spring 304. When it is necessary to clean the crossbeam 1, the electromagnet 301 is energized by the vehicle. Under the action of magnetic force, the cleaning square rings 302 move the rubber pads towards the center. During this process, they push away foreign objects on the surface. There is a stop pad 8 in the middle of the crossbeam 1, which plays a buffering and limiting role. After the power is turned off, the cleaning square rings 302 return to their original position under the action of the tension spring 304, completing one cleaning cycle.

[0029] The lower end of the crossbeam 1 is connected to the obstacle detection plate 201 via the piston rod 402. There is also a pressure relief spring 203 and a pressure switch 202 between the obstacle detection plate 201 and the crossbeam 1. When there is an obstacle in front, it first contacts the obstacle detection plate 201. The impact force is buffered by the pressure relief spring 203 and compressed as the pressure relief spring 203 is compressed, and the obstacle detection plate 201 forms a displacement. At this time, the pressure switch 202 is pressed down. The signal is transmitted to the vehicle body via the sensor 5, and then emergency braking is applied, completing an obstacle detection and response action.

[0030] After wheel resurfacing, the rail height changes. At this time, the obstacle detection plate 201 needs to be raised a certain distance by the piston rod 402. This distance is consistent with the wheel resurfacing thickness. The piston rod 402 extending from the crossbeam 1 is connected to a piston rod spring and a piston. In the initial state, the piston rod spring extends outward, and the piston rod 402 is at its farthest position. When it needs to be retracted, air is injected into the piston side of the crossbeam 1 through an external pipeline. The air pressure pushes the piston to move upward. By controlling the air pressure on the vehicle, the displacement of the obstacle detection plate 201 can be precisely adjusted. The piston rod spring has a certain stiffness. By converting the air pressure and the compression area into pressure, the pressure can push the piston rod spring to compress a certain stroke. Therefore, there is a fixed conversion relationship between air pressure and stroke, which achieves precise adjustment. This avoids the complicated operation of adjusting the height by manually adjusting the position of the toothed plate, which is a traditional obstacle detection device. The adjustment plate is easy to replace and has low cost. The crossbeam 1 can meet the full life cycle of 30 years. At the same time, the crossbeam 1 is equipped with a transition plate 6, which can be connected to all different supports.

[0031] This invention can be installed at the end of a frame to achieve obstacle detection. The piston rod 402 is connected to the obstacle detection plate 201 and has a threaded hole for connection to the pipeline structure 7. The crossbeam 1 is lightweight and has a long maintenance-free cycle. The obstacle detection plate 201 consists of two parts, left and right. A piston rod mounting hole 401 is opened at the bottom to connect to the piston rod 402 on the crossbeam 1. A pressure switch 202 and a pressure-reducing spring 203 are installed on the side of the obstacle detection plate 201, and the front in the forward direction has an impact-resistant coating.

[0032] According to the present invention, a suitable transition plate 6 is selected based on the bracket interface. The bracket, transition plate 6, and crossbeam 1 are assembled and installed on the bogie. When there is an obstacle in front, the obstacle detection plate 201 is pressed and moves towards the crossbeam 1. After triggering the pressure switch 202, the car body receives the signal. The height of the detection plate from the rail surface is controlled by the air pressure input by the car body. When foreign objects are attached to the surface of the crossbeam 1, the electromagnet 301 is energized by the car body button to remove the foreign objects.

[0033] In summary, this invention addresses the problems of complex structure, difficult maintenance, low automation, high replacement cost, insufficient strength to adapt to complex track operating conditions, and short failure cycle in passive obstacle detection devices for driverless trains. By considering various functional requirements, this invention discloses a crossbeam assembly that transmits obstacle collision signals, dynamically adjusts its height above the rail surface, provides impact resistance in the forward direction, offers modular replacement for maintenance, and automatically cleans surface deposits. It meets the requirement of maintenance-free operation throughout its lifespan and achieves lightweight design, providing a new concept for the design and installation of subsequent passive obstacle detection devices.

[0034] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "setting," "connection," "fixing," "screw connection," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal connection of two components or the interaction between two components. Unless otherwise explicitly limited, those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0035] 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 within the protection scope of the present invention.

Claims

1. A self-adjusting, cleaning-equipped, and highly protective obstacle detection beam, characterized in that, include: A crossbeam (1) is provided with a detection component (2) on one side of the crossbeam (1) for detecting obstacles in front of the crossbeam (1); The cleaning component (3) is located at the top of the crossbeam (1) and is used to remove foreign objects from the surface of the top of the crossbeam (1); The wheel turning auxiliary component (4) is located at the bottom end of the crossbeam (1) and is used to adjust the position of the detection component (2) when the wheel is turned.

2. The obstacle detection beam with self-adjusting, cleaning function and high protection as described in claim 1, characterized in that, The detection component (2) includes an obstacle detection plate (201) disposed on one side of the crossbeam (1), and a pressure switch (202) and a pressure relief spring (203) are sequentially disposed between the inner side of the obstacle detection plate (201) and the crossbeam (1).

3. The obstacle detection beam with self-adjusting, cleaning function and high protection as described in claim 2, characterized in that, The obstacle detection plate (201) has an L-shaped structure. One end of the obstacle detection plate (201) is located on the side of the crossbeam (1), and the other end of the obstacle detection plate (201) is located at the bottom of the crossbeam (1).

4. The self-adjusting, cleaning-equipped, and highly protective obstacle detection beam according to claim 2, characterized in that, A sensor (5) is provided at one end of the crossbeam (1). The sensor (5) is electrically connected to the pressure switch (202) and transmits the pressure signal of the pressure switch (202) to the train body.

5. The self-adjusting, cleaning-equipped, and highly protective obstacle detection beam according to claim 4, characterized in that, When an obstacle appears in front of the train, the obstacle contacts the obstacle detection plate (201) and generates a collision force; The obstacle detection plate (201) is displaced by the impact force, and the pressure switch (202) generates a pressure signal. The pressure relief spring (203) is used to buffer the obstacle detection plate (201).

6. The self-adjusting, cleaning-equipped, and highly protective obstacle detection beam according to claim 1, characterized in that, The cleaning assembly (3) includes an electromagnet (301) disposed in the middle of the crossbeam (1), and cleaning square rings (302) that match the shape of the crossbeam (1) are provided on both sides of the electromagnet (301). A fixing seat (303) is provided at the end of the cleaning square ring (302) away from the electromagnet (301) and at the end of the crossbeam (1). A tension spring (304) is connected between the fixing seat (303) and the cleaning square ring (302).

7. The self-adjusting, cleaning-equipped, and highly protective obstacle detection beam according to claim 6, characterized in that, The electromagnet (301) is sleeved on the outside of the crossbeam (1), and the electromagnet (301) is interference-fitted with the crossbeam (1).

8. The self-adjusting, cleaning-equipped, and highly protective obstacle detection beam according to claim 2, characterized in that, The turning auxiliary component (4) includes a piston rod mounting hole (401) at the bottom of the obstacle detection plate (201), and a piston rod (402) is provided at the bottom end of the crossbeam (1) and inside the piston rod mounting hole (401).

9. The self-adjusting, cleaning-equipped, and highly protective obstacle detection beam according to claim 8, characterized in that, When the train is undergoing wheel resurfacing, the piston rod spring (9) extends outward in the initial state so that the piston rod (402) is in the farthest position; air is supplied to the piston side of the crossbeam (1) through an external pipeline; Based on the conversion relationship between the inflation pressure and the piston rod spring stroke, the air pressure is controlled to push the piston (10) to move, so as to realize the position adjustment of the obstacle detection plate (201).

10. The self-adjusting, cleaning-equipped, and highly protective obstacle detection beam according to claim 1, characterized in that, The end of the crossbeam (1) is provided with a transition plate (6), and the end of the transition plate (6) near the middle of the crossbeam (1) is provided with a pipeline structure (7); a stop pad (8) is provided in the middle of the crossbeam (1).

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