Contact type rail vehicle obstacle detection and derailment detection integrated device

Abstract

The utility model provides a contact type rail vehicle obstacle detection and derailment detection integrated device which is used for solving the technical problems that an existing vehicle obstacle detection device is low in integration level, and a derailment detection device is prone to being touched by mistake when encountering accumulated water. The device is of a passive contact type, integrates the obstacle detection function and the derailing detection function, can achieve vertical detection and horizontal detection, has the advantage of being light in weight compared with an obstacle detection device based on a steel plate spring type, and has the advantage of being high in detection efficiency compared with a derailing detection device with a conductive resistor disc arranged at the bottom of the detection cross beam. The integrated device provided by the utility model is higher in safety, can better adapt to extreme weather, and also has the characteristics of compact and novel structure, light weight, low cost, small volume and high reliability.

Description

Technical Field

[0001] The utility model relates to a vehicle obstacle detection and derailment detection device, in particular to a contact type rail vehicle obstacle detection and derailment detection integrated device. Background Art

[0002] At present, most urban rail transit vehicles are operated by manned vehicles, that is, the driver operates the train and is responsible for watching the track ahead of the train to ensure that no obstacles fall into the track section. In order to improve the driving efficiency of the train and realize vehicle automation and intelligence, in recent years, unmanned urban rail train projects have gradually increased, which has become the trend and mainstream direction of future development. Automated unmanned urban rail vehicles have the advantages of high automation and energy saving, and will be the development trend of domestic rail transit.

[0003] Since the driver is eliminated, the safety requirements for automated unmanned urban rail vehicles are higher. It is crucial to identify track obstacles and brake in time after derailment during driving to ensure the safety of personnel. After the obstacle detection device detects an obstacle in the direction of the train or the train derails, it will immediately feed back the alarm signal to the train control system and take emergency braking when necessary to avoid accidents or escalate the situation to ensure the safety of personnel and vehicles.

[0004] Chinese patent 201310243984.1 discloses a contact obstacle detection device for rail vehicles. The device has a simple structure, triggers the travel switch to send a signal through the large deformation of the elastic bracket, and has a height adjustment function to suit different vehicle models. However, its guide device and elastic element are both leaf springs, which are large in size and high in manufacturing cost. In addition, the derailment detection function is not integrated in the obstacle detection device, which cannot meet the requirements of small space and high integration.

[0005] Chinese patent 201910725370.4 discloses a rail train obstacle detection device, which has the advantage of adjustable trigger force, but has a relatively large number of parts, resulting in reduced reliability and increased manufacturing costs, and the derailment detection function is not integrated into the obstacle detection device.

[0006] Chinese Patent 202011565089.8 discloses an obstacle detection device for urban rail trains, which has the advantages of simple structure and high reliability. However, its derailment detection is to detect the conductive resistor at the bottom of the beam, which is prone to false triggering in very harsh on-site operating environments, especially in rainy and snowy weather and when water accumulates on the track. Utility Model Content

[0007] The utility model aims to solve the technical problems that the existing vehicle obstacle detection devices have low integration and high manufacturing costs, or the derailment detection devices are prone to false triggering when encountering water, and proposes a contact-type rail vehicle obstacle detection and derailment detection integrated device.

[0008] In order to solve the above technical problems, the technical solutions provided by the utility model are as follows:

[0009] A contact type rail vehicle obstacle detection and derailment detection integrated device, which is special in that it includes a detection beam, a vertical guide block, a bogie interface plate, an electrical signal box and a sliding bearing;

[0010] Both ends of the detection beam are provided with mounting holes for mounting vertical guide blocks;

[0011] The inner side of the vertical guide block is a mounting end, which is mounted in the mounting hole, and the mounting end is provided with two elongated holes distributed up and down, and the height of the mounting end is less than the height of the mounting hole; the height difference between the mounting end and the mounting hole is ≤ the length of the elongated hole; the outer side of the vertical guide block is provided with a bearing mounting hole, and the sliding bearing is mounted on the vertical guide block through the bearing mounting hole;

[0012] The bogie interface plate comprises a bogie mounting plate, a pin is provided at the lower half of the bogie mounting plate, and the pin is connected with the sliding bearing through the inner hole of the sliding bearing; a compression spring is also sleeved on the pin, and the two ends of the compression spring abut against the bogie mounting plate and the sliding bearing respectively; the sliding bearing and the pin are used to provide a bearing and guiding effect for the horizontal displacement of the detection beam;

[0013] The electrical signal box is an L-shaped structure, including a vertical section and a horizontal section, and is fixedly mounted on the inner side of the bogie mounting plate through the vertical section; trigger switches with trigger ends protruding inward are provided on the inner sides of the vertical section and the horizontal section, and the trigger ends are respectively in contact with the upper side and rear side of the detection beam.

[0014] Furthermore, two bearing mounting holes distributed up and down are arranged on the outer side of the vertical guide block, and the sliding bearings are two, which are respectively mounted on the vertical guide block through the bearing mounting holes;

[0015] The lower half of the bogie mounting plate is provided with two pins distributed up and down, and the two pins are respectively connected with the sliding bearing through the inner hole of the sliding bearing.

[0016] Furthermore, the electrical signal box includes an electrical housing, and the trigger switch includes a trigger assembly and a micro switch; the micro switch is located inside the electrical housing and connected to one end of the trigger assembly; the other end of the trigger assembly is a trigger end, which respectively fits the upper side and rear side of the detection beam.

[0017] Furthermore, two groups of vertical trigger switches are arranged on the inner side of the horizontal section of the electrical signal box, and the trigger ends of the trigger components in the two groups of vertical trigger switches are in contact with the upper side of the detection beam for derailment detection.

[0018] Furthermore, three groups of horizontal and longitudinal trigger switches are arranged on the inner side of the vertical section of the electrical signal box, and the trigger ends of the trigger components in the three groups of horizontal and longitudinal trigger switches are in contact with the rear side of the detection beam for obstacle detection.

[0019] Furthermore, an electrical box mounting plate is vertically arranged on the inner side of the bogie mounting plate, and two signal box mounting holes are arranged on the upper end of the electrical box mounting plate. The electrical signal box is fixedly connected to the electrical box mounting plate by screws passing through the signal box mounting holes.

[0020] Furthermore, it also includes a safety rope; the upper end surface of the detection beam is provided with two safety rope mounting seats, which are distributed between the two electrical signal boxes on the left and right, and the safety rope is installed in the safety rope mounting seats.

[0021] Furthermore, the sliding bearing is a copper-based graphite self-lubricating structure, and the sliding bearing is provided with circumferentially distributed bearing fixing holes. The sliding bearing is installed on the vertical guide block through the bearing mounting hole by passing screws through the bearing fixing holes.

[0022] Furthermore, the upper portion of the bogie interface plate is provided with a connection hole for connecting with a vehicle.

[0023] Beneficial effects of the utility model:

[0024] 1. The utility model is a passive contact type, which integrates obstacle detection and derailment detection functions, and can realize vertical detection and horizontal detection respectively. Compared with the obstacle detection device based on the leaf spring type, it has the characteristics of light weight. Compared with the derailment detection device with a conductive resistor sheet arranged at the bottom of the detection beam, the integrated device proposed by the utility model is safer, can better adapt to extreme weather, and also has the characteristics of compact and novel structure, lightweight, low cost, small size and high reliability.

[0025] 2. The utility model adopts a pin shaft and a sliding bearing as a guide bearing module in the obstacle detection part, uses a compression spring as an elastic element, and realizes a three-choice-two trigger mechanism with three micro switches. While ensuring the detection sensitivity, it simplifies the structure and reduces the difficulty of installation and maintenance.

[0026] 3. The vertical guide plate of the utility model is provided with a long hole, and the height of the mounting end of the vertical guide plate is less than the height of the mounting hole on the detection beam, and the height difference between the two is less than or equal to the length of the long hole, so that there is displacement space for the detection beam in the vertical direction. When the displacement reaches the triggering electrical signal box, a signal can be sent out and emergency braking can be taken to ensure vehicle safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a structural schematic diagram of an embodiment of a contact-type rail vehicle obstacle detection and derailment detection integrated device of the utility model;

[0028] Figure 2 It is a structural schematic diagram of a detection beam in an embodiment of a contact-type rail vehicle obstacle detection and derailment detection integrated device of the utility model;

[0029] Figure 3 It is a structural schematic diagram of a vertical guide block in an embodiment of a contact-type rail vehicle obstacle detection and derailment detection integrated device of the utility model;

[0030] Figure 4 It is a structural schematic diagram of a bogie mounting plate in an embodiment of a contact-type rail vehicle obstacle detection and derailment detection integrated device of the utility model;

[0031] Figure 5 It is a structural schematic diagram of an electrical box mounting plate in an embodiment of a contact-type rail vehicle obstacle detection and derailment detection integrated device of the utility model;

[0032] Figure 6 for Figure 1 Side view of (compression spring and sliding bearing omitted);

[0033] Figure 7 for Figure 1 Side view of.

[0034] 1-detection beam, 11-mounting hole, 12-safety rope mounting seat; 2-vertical guide block, 22-bearing mounting hole, 23-long hole; 3-bogie interface plate, 31-bogie mounting plate, 32-pin shaft, 33-electrical box mounting plate, 34-connecting hole, 35-signal box mounting hole; 4-electrical signal box, 41-electrical housing, 42-trigger assembly, 43-micro switch; 5-sliding bearing; 6-compression spring; 7-safety rope; A-normal installation position of detection beam, B-derailment trigger position of detection beam. DETAILED DESCRIPTION

[0035] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0036] A contact-type rail vehicle obstacle detection and derailment detection integrated device, installed at the front and rear bogie positions of the head or tail car of an unmanned or automatic driving rail vehicle. Figure 1-Figure 7As shown, it includes a detection beam 1, two vertical guide blocks 2 respectively installed at the left and right ends of the detection beam 1, a bogie interface plate 3 located behind the detection beam 1 and the vertical guide block 2 and connected to the vertical guide block 2 through a sliding bearing 5, and an electrical signal box 4 installed in contact with the upper end surface and rear side surface of the detection beam 1; a compression spring 6 is arranged between the vertical guide block 2 and the bogie interface plate 3; and two safety ropes 7 are also arranged on the upper end surface of the detection beam 1, and the safety ropes 7 are connected to the bogie of the vehicle. In this embodiment, the compression spring 6 is a spiral spring.

[0037] like Figure 2 As shown, the detection beam 1 is an aluminum profile, the middle part of the detection beam 1 protrudes forward, and the middle part transitions to the two ends in an arc. The left and right ends of the detection beam 1 are respectively provided with mounting holes 11 for mounting the vertical guide block 2. The front and rear walls of the mounting hole 11 are provided with threaded holes. The upper end surface of the detection beam 1 is welded with two left and right distributed safety rope mounting seats 12 for fixing the safety rope 7.

[0038] like Figure 3 The figure shows a schematic diagram of the structure of the vertical guide block 2. The outer side of the vertical guide block 2 is provided with two bearing mounting holes 22 distributed up and down for installing the sliding bearing 5; the sliding bearing 5 is provided with bearing fixing holes distributed circumferentially, and the sliding bearing 5 is fixedly installed on the vertical guide plate by screws passing through the bearing fixing holes. The sliding bearing 5 is a copper-based graphite self-lubricating structure, which is particularly suitable for low-speed and heavy-load conditions. It has the characteristics of maintenance-free and is suitable for harsh working conditions under the vehicle. The inner side of the vertical guide block 2 is the mounting end, and the mounting end is provided with two elongated holes 23 distributed up and down. The height of the mounting end is less than the height of the mounting hole 11 on the detection beam 1, and the height difference between the two is less than or equal to the length of the elongated hole 23. The threaded holes on the front and rear hole walls of the mounting hole 11 correspond to the positions of the elongated holes 23. Bolts are used to pass through the threaded holes and the elongated holes 23 in sequence to install the vertical guide block 2 in the mounting hole 11 of the detection beam 1. Figure 3 Point A in the figure is the normal installation position of the detection beam 1, and point B is the derailment trigger position of the detection beam 1. The detection beam 1 can move vertically upward relative to the vertical guide block 2.

[0039] like Figure 4As shown, the bogie interface plate 3 includes a bogie mounting plate 31, a pin 32 and an electrical box mounting plate 33. The upper part of the bogie mounting plate 31 is provided with a connection hole 34 connected to the vehicle body. In this embodiment, there are four connection holes 34, which are distributed in a square shape. The lower part of the bogie mounting plate 31 is provided with two pins 32 arranged up and down. The pins 32 and the sliding bearing 5 provide a load-bearing and guiding function for the detection beam 1. A washer is sleeved on the pin 32, which passes through the compression spring 6 and the sliding bearing 5 in sequence, and the outer end is fastened by a nut. One end of the compression spring 6 is against the washer, and the other end abuts the sliding bearing 5. The torque tightening of the pin 32 is required to ensure that the detection beam 1 does not undergo vertical displacement when the vehicle is in normal operation. The electrical box mounting plate 33 is located on the side of the bogie mounting plate 31, and the bogie mounting plate 31 is vertically connected to the electrical box mounting plate 33. The upper end of the electrical box mounting plate 33 is provided with a signal box mounting hole 35 connected to the electrical signal box 4.

[0040] like Figure 5 As shown, the electrical signal box 4 is an L-shaped structure, including an electrical housing 41, a trigger assembly 42 and a micro switch 43. The micro switch 43 is located inside the electrical housing 41 and is connected to one end of the trigger assembly 42. The other end of the trigger assembly 42 is a trigger end, which protrudes from the electrical housing 41. There are multiple groups of trigger assemblies 42 and micro switches 43, which are respectively arranged along the horizontal section and the vertical section of the electrical signal box 4. In this embodiment, two groups of trigger assemblies 42 and micro switches 43 are arranged along the horizontal section of the electrical housing 41, wherein the trigger end of the trigger assembly 42 fits the upper side of the detection beam 1 for vertical detection of displacement. Three groups of trigger assemblies 42 and micro switches 43 are arranged along the vertical section of the electrical housing 41 to realize a three-choice two trigger mechanism for horizontal and longitudinal displacement detection, and the trigger end of the trigger assembly 42 on the vertical section fits the rear side of the detection beam 1. The electrical signal box 4 is provided with a signal box mounting auxiliary hole corresponding to the signal box mounting hole 35 , and the electrical signal box 4 is fixedly connected to the electrical box mounting plate 33 by bolts.

[0041] Working process: When the train derails, the detection beam 1 collides with the rail, and its vertical impact force is sufficient to overcome the friction between the detection beam 1 and the vertical guide block 2. The detection beam 1 moves vertically upward, triggering the vertical trigger component 42 of the electrical signal box 4. The trigger component 42 opens the micro switch 43, and the switch signal is fed back to the train to take braking measures. When the vehicle is moving forward, when the detection beam 1 collides with an obstacle on the rail, the detection beam 1 moves horizontally and compresses the compression spring 6 backward. The pin 32 and the sliding bearing 5 play a guiding and bearing role. After reaching the set value, the horizontal longitudinal trigger component 42 on the electrical box is triggered, and the trigger component 42 opens the micro switch 43. The switch signal is fed back to the train control system, causing the train to brake urgently, thereby preventing the train situation from further expanding.

[0042] The utility model can realize derailment detection in the vertical direction and obstacle detection in the horizontal direction, integrating two functions with one set of equipment. When an urban rail transit vehicle detects a track obstacle while driving, if the collision energy is not enough to trigger, the detection beam 1 pushes the obstacle out of the track surface and drives normally; if the collision energy triggers the trigger mechanism, the train takes emergency braking to ensure the safety of personnel and vehicles. When an urban rail transit vehicle derails while driving, the bogie will fall. At this time, the obstacle and the derailment detection beam 1 will inevitably collide with the rail. After the collision, the derailment detection can be triggered and the train takes emergency braking.

Claims

1. A contact type rail vehicle obstacle detection and derailment detection integrated device, characterized in that: It comprises a detection crossbeam (1), a vertical guide block (2), a bogie interface plate (3), an electrical signal box (4) and a sliding bearing (5); Both ends of the detection beam (1) are provided with mounting holes (11) for mounting the vertical guide blocks (2); The inner side of the vertical guide block (2) is a mounting end, which is mounted in the mounting hole (11), and the mounting end is provided with two elongated holes (23) distributed up and down, and the height of the mounting end is less than the height of the mounting hole (11); the height difference between the mounting end and the mounting hole (11) is ≤ the length of the elongated hole (23); the outer side of the vertical guide block (2) is provided with a bearing mounting hole (22), and the sliding bearing (5) is mounted on the vertical guide block (2) through the bearing mounting hole (22); The bogie interface plate (3) comprises a bogie mounting plate (31), the lower half of which is provided with a pin shaft (32), the pin shaft (32) being matched and connected with the sliding bearing (5) through the inner hole of the sliding bearing (5); a compression spring (6) is also sleeved on the pin shaft (32), and the two ends of the compression spring (6) respectively abut against the bogie mounting plate (31) and the sliding bearing (5); the sliding bearing (5) and the pin shaft (32) are used to provide a bearing and guiding effect for the horizontal displacement of the detection beam (1); The electrical signal box (4) is an L-shaped structure, including a vertical section and a horizontal section, and is fixedly mounted on the inner side of the bogie mounting plate (31) through the vertical section; the inner sides of the vertical section and the horizontal section are both provided with trigger switches with trigger ends protruding inward, and the trigger ends are respectively in contact with the upper side and rear side of the detection beam (1).

2. The contact-type rail vehicle obstacle detection and derailment detection integrated device according to claim 1, characterized in that: The outer side of the vertical guide block (2) is provided with two bearing mounting holes (22) distributed up and down, and the sliding bearings (5) are two and are respectively mounted on the vertical guide block (2) through the bearing mounting holes (22); The lower half of the bogie mounting plate (31) is provided with two pin shafts (32) distributed up and down, and the two pin shafts (32) are respectively connected to the sliding bearing (5) through the inner holes of the sliding bearing (5).

3. A contact type rail vehicle obstacle detection and derailment detection integrated device according to claim 1 or 2, characterized in that: The electrical signal box (4) comprises an electrical housing (41); the trigger switch comprises a trigger assembly (42) and a micro switch (43); the micro switch (43) is located inside the electrical housing (41) and is connected to one end of the trigger assembly (42); the other end of the trigger assembly (42) is a trigger end, which is respectively attached to the upper side and the rear side of the detection beam (1).

4. The contact-type rail vehicle obstacle detection and derailment detection integrated device according to claim 3, characterized in that: Two groups of vertical trigger switches are arranged on the inner side of the horizontal section of the electrical signal box (4), and the trigger ends of the trigger components (42) in the two groups of vertical trigger switches are in contact with the upper side of the detection beam (1) for derailment detection.

5. The contact-type rail vehicle obstacle detection and derailment detection integrated device according to claim 4, characterized in that: Three groups of horizontal longitudinal trigger switches are arranged on the inner side of the vertical section of the electrical signal box (4), and the trigger ends of the trigger components (42) in the three groups of horizontal longitudinal trigger switches are in contact with the rear side of the detection beam (1) for obstacle detection.

6. The contact-type rail vehicle obstacle detection and derailment detection integrated device according to claim 5, characterized in that: An electrical box mounting plate (33) is vertically arranged on the inner side of the bogie mounting plate (31), and two signal box mounting holes (35) are arranged on the upper end of the electrical box mounting plate (33). The electrical signal box (4) is fixedly connected to the electrical box mounting plate (33) by screws passing through the signal box mounting holes (35).

7. The contact-type rail vehicle obstacle detection and derailment detection integrated device according to claim 1, characterized in that: It also includes a safety rope (7); the upper end surface of the detection crossbeam (1) is provided with two safety rope mounting seats (12), which are distributed between the two electrical signal boxes (4) on the left and right, and the safety rope (7) is installed in the safety rope mounting seats (12).

8. The contact-type rail vehicle obstacle detection and derailment detection integrated device according to claim 1, characterized in that: The sliding bearing (5) is a copper-based graphite self-lubricating structure. The sliding bearing (5) is provided with bearing fixing holes distributed circumferentially. Screws are passed through the bearing fixing holes to install the sliding bearing (5) on the vertical guide block (2) through the bearing installation hole (22).

9. The contact-type rail vehicle obstacle detection and derailment detection integrated device according to claim 6, characterized in that: The upper part of the bogie interface plate (3) is provided with a connection hole (34) for connecting with a vehicle.

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