An obstacle detection device, a bogie, and a vehicle

Abstract

This invention relates to the field of rail transit technology, and more particularly to an obstacle detection device, a bogie, and a vehicle. The obstacle detection device includes: a mounting frame having a leaf spring and a support plate; the leaf spring passing through the support plate; a limit switch mounted on the support plate; and a predetermined distance between the limit switch and the leaf spring. An adjustment mechanism is provided on the side of the support plate opposite to the limit switch. The support plate has a first through groove. A mounting seat is provided at the end of the limit switch facing the support plate. The switch mounting seat passes through the first through groove and is connected to the adjustment mechanism. The adjustment mechanism moves the mounting seat along the first through groove to adjust the distance between the limit switch and the leaf spring. This invention solves the problems of poor leaf spring versatility, high manufacturing difficulty, and high cost caused by the need to adjust the leaf spring structure and manufacturing process to ensure that the trigger force value remains unchanged after the height of the detection beam changes.

Description

Technical Field

[0001] This invention relates to the field of rail transit technology, and in particular to an obstacle detection device, a bogie, and a vehicle. Background Technology

[0002] The information disclosed in this background section is intended only to enhance understanding of the overall background of the invention and is not necessarily to be construed as an admission or in any way implying that such information constitutes prior art known to those skilled in the art.

[0003] Fully automated driving rail transit vehicles typically have a passive obstacle and derailment detection device installed at one end of one bogie on the lead car. This device contains obstacle sensors and derailment sensors. When the train derails or encounters an obstacle in front of the track, the detection beam causes the leaf spring mounting arm to deform. The leaf spring then presses against the limit switch button mounted on the mounting frame. The limit switch disconnects the circuit, and the train, upon detecting the power failure, triggers the emergency brake to stop the train and ensure driving safety.

[0004] Different tracks have different requirements for the height of the detection beam from the rail surface. Additionally, wheel wear necessitates repair, requiring adjustments to the detection beam's height. This changes the relative position of the leaf spring mounting arm and the leaf spring itself, resulting in different deformations of the leaf spring under the same external force. Consequently, the sensor's trigger force changes with the height of the detection beam. To ensure the trigger force remains constant despite these changes, the leaf spring's cross-sectional dimensions and heat treatment process must be adjusted, leading to poor leaf spring versatility, increased manufacturing difficulty, and significantly higher production costs. Summary of the Invention

[0005] To address the shortcomings of existing technologies, the purpose of this invention is to provide an obstacle detection device that solves the problems of poor versatility, high manufacturing difficulty, and high cost caused by the need to adjust the leaf spring structure and manufacturing process to ensure that the triggering force value remains unchanged after the height of the detection beam changes.

[0006] To achieve the above objectives, the embodiments of the present invention provide the following technical solutions:

[0007] An obstacle detection device includes: a mounting frame having a leaf spring and a support plate, the leaf spring passing through the support plate, a limit switch mounted on the support plate, the limit switch and the leaf spring having a predetermined distance between them; an adjustment mechanism being provided on the side of the support plate opposite to the limit switch; a first through groove being provided on the support plate; a mounting seat being provided on the end of the limit switch facing the support plate; the mounting seat passing through the first through groove and connected to the adjustment mechanism; the adjustment mechanism driving the mounting seat to move along the first through groove thereby adjusting the distance between the limit switch and the leaf spring.

[0008] In another preferred embodiment of the present invention, the adjustment mechanism includes a rotating member that is rotatably connected to the mounting base.

[0009] In another preferred embodiment of the present invention, a fixing plate is provided on the side of the bearing plate opposite to the limit switch, the fixing plate has a threaded hole, and the rotating component has a threaded section that mates with the threaded hole of the fixing plate.

[0010] In another preferred embodiment of the present invention, the lower end of the mounting base has an ear portion with an opening groove in the middle, and the end of the rotating component is provided with an annular groove, wherein the opening groove of the mounting base is engaged with the annular groove of the rotating component.

[0011] In another preferred embodiment of the present invention, a locking nut is installed on the threaded section of the rotating component, and the locking nut and the mounting base are located on opposite sides of the fixing plate.

[0012] In another preferred embodiment of the present invention, a gasket is installed between the locking nut and the fixing plate.

[0013] In another preferred embodiment of the present invention, a locking screw is further included, the support plate has a second through groove, the mounting base has a screw hole, and the locking screw passes through the second through groove and is connected to the screw hole.

[0014] In another preferred embodiment of the present invention, a rotating part is provided at the end of the rotating member away from the mounting base, and the rotating part has a hexagonal structure.

[0015] This invention also provides a bogie, wherein the aforementioned obstacle detection device is installed at the front end of the bogie.

[0016] This invention also provides a vehicle equipped with the aforementioned bogie.

[0017] One or more technical solutions provided in the embodiments of the present invention have at least the following technical effects or advantages:

[0018] When the height of the detection beam changes, the adjustment mechanism moves the mounting base along the first through slot, thereby causing the limit switch on the mounting base to move closer to or further away from the leaf spring. This changes the distance between the limit switch and the leaf spring, ensuring that the trigger force value of the detection device remains constant after the height of the detection beam changes without the need to re-machine different leaf springs. This eliminates the need to redesign a new leaf spring structure and strictly control the leaf spring dimensions and heat treatment process to guarantee the trigger force value, reducing manufacturing difficulty, saving manufacturing costs, reducing product variety, and increasing the versatility of components.

[0019] Advantages of additional aspects of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.

[0020] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description

[0021] The accompanying drawings, which form part of this invention, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an improper limitation of the invention.

[0022] Figure 1 This is a schematic diagram of an obstacle detection device according to an embodiment of the present invention;

[0023] Figure 2 This is a schematic diagram of the bottom of the obstacle detection device according to an embodiment of the present invention;

[0024] Figure 3 This is a schematic diagram of the obstacle detection device of this invention after the installation frame is hidden;

[0025] Figure 4 This is a schematic diagram of the mounting base of the obstacle detection device according to an embodiment of the present invention;

[0026] Figure 5 This is a schematic diagram of the rotating component of the obstacle detection device according to an embodiment of the present invention;

[0027] Figure 6 This is a schematic diagram of the front end of the bogie according to an embodiment of the present invention;

[0028] In the diagram: 1. Mounting frame; 11. Leaf spring; 12. Bearing plate; 121. First through slot; 122. Second through slot; 2. Detection beam; 3. Adjustment mechanism; 31. Fixing plate; 32. Locking nut; 33. Rotating component; 331. Rotating part; 332. Threaded section; 333. Annular groove; 4. Limit switch; 5. Mounting base; 51. Ear; 52. Screw hole; 6. Locking screw;

[0029] The distances or dimensions between parts have been exaggerated to show their positions; the diagram is for illustrative purposes only. Detailed Implementation

[0030] It should be noted that the following detailed description is illustrative and intended to provide further explanation of the invention. Unless otherwise specified, all technical and scientific terms used in this invention have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains.

[0031] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the scope of exemplary embodiments according to the invention. As used herein, unless otherwise expressly indicated by the invention, the singular form is intended to include the plural form as well. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0032] For ease of description, the words "up," "down," "left," and "right" appearing in this invention only indicate that they are consistent with the up, down, left, and right directions of the accompanying drawings themselves. They do not limit the structure and are merely for the purpose of facilitating the description of this invention and simplifying the description. They do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0033] As described in the background section, the distance between the detection beam 2 and the rail surface needs to be adjusted for different driving routes. On the other hand, the wheels will wear out after the vehicle has been in motion for a certain period of time, so the wheels need to be repaired. After the wheels are repaired, the distance between the detection beam and the rail surface also needs to be adjusted accordingly.

[0034] If the sensor is set to be triggered when the detection beam is subjected to an impact force of 'a', but in the above situation, the height of the detection beam changes, causing its position on the leaf spring to change. This may result in the sensor not being triggered when the detection beam is subjected to an impact force of 'a', causing danger, or the sensor being triggered prematurely when the impact force is insufficient to 'a', causing false triggering.

[0035] In order to ensure that the triggering force remains constant when the height of the detection beam changes, the cross-sectional dimensions of the leaf spring and the heat treatment process need to be adjusted, which results in problems such as poor leaf spring versatility, high manufacturing difficulty, and a significant increase in production costs.

[0036] To address the above-mentioned technical problems, this invention proposes an obstacle detection device, such as... Figures 1-5 As shown, it includes: a mounting frame 1, the mounting frame 1 having a leaf spring 11 and a support plate 12, the leaf spring 11 being disposed through the support plate 12, a limit switch 4 being mounted on the support plate 12, the limit switch 4 being disposed at a set distance from the leaf spring 11; an adjustment mechanism 3 being disposed on the side of the support plate 12 away from the limit switch 4, the support plate 12 having a first through groove 121, a mounting seat 5 being disposed on the end of the limit switch 4 facing the support plate 12, the mounting seat 5 being disposed through the first through groove and connected to the adjustment mechanism 3, the adjustment mechanism 3 driving the mounting seat 5 to move along the first through groove thereby adjusting the distance between the limit switch 4 and the leaf spring 11.

[0037] When the height of the detection beam changes, the adjustment mechanism moves the mounting base along the first through slot, thereby causing the limit switch on the mounting base to move closer to or further away from the leaf spring. This changes the distance between the limit switch and the leaf spring, ensuring that the trigger force value of the detection device remains constant after the height of the detection beam changes without the need to re-machine different leaf springs. This eliminates the need to redesign a new leaf spring structure and strictly control the leaf spring dimensions and heat treatment process to guarantee the trigger force value, reducing manufacturing difficulty, saving manufacturing costs, reducing product variety, and increasing the versatility of components.

[0038] like Figure 2 , Figure 3 , Figure 5 As shown, the adjustment mechanism 3 is a threaded adjustment mechanism, including a rotating component 33. The rotating component can be machined from round steel or modified from existing bolts. The rotating component 33 is rotatably connected to the mounting base 5. When the rotating component is rotated, the mounting base moves only along the axis and does not rotate radially. A fixing plate 31 is provided at the lower end of the bearing plate 12. The fixing plate and the bearing plate can be fixed by welding. The fixing plate 31 has a threaded hole, and the rotating component 33 has a threaded section 332 that mates with the threaded hole of the fixing plate 31. The rotating component and the fixing plate are connected by threads. Since the fixing plate is fixed to the lower side of the bearing plate, when the rotating component is rotated, the rotating component moves axially relative to the fixing plate.

[0039] like Figure 4 As shown, the upper end of the mounting base is L-shaped, and the lower end is provided with an ear 51. The middle of the ear 51 is an open groove. The end of the rotating component 33 is provided with an annular groove 333. The open groove of the mounting base 5 is engaged with the annular groove 333 of the rotating component 33. By cooperating with the annular groove of the rotating component through the open groove at the ear, the mounting base is moved axially by rotating the rotating component.

[0040] The threaded section 332 of the rotating component 33 is fitted with a locking nut 32. The locking nut 32 and the mounting base 5 are located on opposite sides of the fixing plate 31. A washer is installed between the locking nut 32 and the fixing plate 31. A rotating part 331 with a hexagonal structure is provided at the end of the rotating component away from the mounting base 5. After the rotating component is adjusted, the locking nut is used to lock the rotating component to prevent loosening during operation.

[0041] The detection device also includes a locking screw 6. The support plate 12 has a second through groove 122, and the mounting base 5 has a screw hole 52. The locking screw 6 passes through the second through groove and connects to the screw hole 52. By using the locking screw to fix the mounting base and the limit switch to the support plate, it is possible to prevent the limit switch from shifting and causing inaccurate signal acquisition.

[0042] like Figure 6As shown, based on the above obstacle detection device, this embodiment of the invention also provides a bogie and a vehicle. The front end of the bogie is provided with the obstacle detection device described in the above embodiment. Since the obstacle detection device has the above technical effects, please refer to the above embodiment for the technical effects of the bogie or vehicle using the obstacle detection device.

[0043] While the specific embodiments of the present invention have been described above in conjunction with the accompanying drawings, this is not intended to limit the scope of protection of the present invention. Those skilled in the art should understand that various modifications or variations that can be made by those skilled in the art without creative effort based on the technical solutions of the present invention are still within the scope of protection of the present invention.

Claims

1. An obstacle detection device, characterized in that, include: The mounting frame has a leaf spring and a support plate, the leaf spring passing through the support plate, and a limit switch is mounted on the support plate, with a set distance between the limit switch and the leaf spring. An adjustment mechanism is provided on the side of the support plate away from the limit switch. The support plate is provided with a first through groove. A mounting seat is provided on the end of the limit switch facing the support plate. The mounting seat passes through the first through groove and is connected to the adjustment mechanism. The adjustment mechanism drives the mounting seat to move along the first through groove, thereby adjusting the distance between the limit switch and the leaf spring.

2. The obstacle detection device as described in claim 1, characterized in that, The adjustment mechanism includes a rotating component, which is rotatably connected to the mounting base.

3. The obstacle detection device as described in claim 2, characterized in that, A fixing plate is provided on the side of the support plate opposite to the limit switch. The fixing plate has a threaded hole, and the rotating component has a threaded section that mates with the threaded hole of the fixing plate.

4. The obstacle detection device as described in claim 3, characterized in that, The mounting base has an ear at its lower end, with an opening groove in the middle of the ear. The rotating part has an annular groove at its end, and the opening groove of the mounting base engages with the annular groove of the rotating part.

5. The obstacle detection device as described in claim 3, characterized in that, The threaded section of the rotating component is fitted with a locking nut, and the locking nut and the mounting base are located on opposite sides of the fixed plate.

6. The obstacle detection device as described in claim 5, characterized in that, A gasket is installed between the locking nut and the fixing plate.

7. The obstacle detection device as described in claim 1, characterized in that, It also includes a locking screw, the support plate has a second through groove, the mounting base has a screw hole, and the locking screw passes through the second through groove and is connected to the screw hole.

8. The obstacle detection device as described in claim 2, characterized in that, The rotating part is provided at the end of the rotating component away from the mounting base, and the rotating part has a hexagonal structure.

9. A bogie, characterized in that, The bogie is equipped with an obstacle detection device as described in any one of claims 1-8 at its front end.

10. A vehicle, characterized in that, It is equipped with the bogie as described in claim 9.

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