A protection cover for an obstacle detection device

Abstract

This utility model relates to the field of rail transit technology, and in particular to a protective cover for an obstacle detection device, comprising a carbon fiber shell, wherein the carbon fiber shell is an integral box structure with open ends at both the rear and bottom; the open end of the carbon fiber shell is used to connect with the bogie support, and the open end of the carbon fiber shell is used to connect with the dustproof rubber sleeve; adjacent surfaces of the carbon fiber shell are connected by a rounded transition; this utility model proposes a protective cover for an obstacle detection device, which, by setting the carbon fiber shell as an integral box structure with a rounded transition between adjacent surfaces, makes the protective cover seam-free, reduces the risk of stress concentration, improves the service life of the protective cover, and effectively ensures the protection function of the internal sensors and the operational reliability of the entire obstacle detection device.

Description

Technical Field

[0001] This utility model relates to the field of rail transit technology, and in particular to a protective cover for an obstacle detection device. Background Technology

[0002] In rail transit systems, ensuring the safety of train operation is of paramount importance. Obstacle detection devices, as key safety equipment at the front end of trains, primarily function to detect intrusive obstacles ahead of the track in real time during train operation. Upon detection of an obstacle, they promptly trigger emergency braking or alarm signals, thereby effectively avoiding or mitigating collisions and ensuring the safety of passengers, vehicles, and track infrastructure.

[0003] Existing obstacle detection devices (such as a contact-type obstacle and derailment detection device for rail transit, authorized announcement number CN217835646U) typically include a swingable trigger structure. When an obstacle in front of the train impacts this trigger structure, it displaces and triggers an internal sensor, which then sends a detection signal. To protect the internal sensors and other delicate components from direct impact and corrosion from the external environment (such as rain, dust, flying stones, ice, and snow), a protective cover is usually installed on its exterior.

[0004] As described above, the protective cover of existing obstacle detection devices is generally a box structure formed by welding multiple metal plates. The weld seams are prone to stress concentration areas, becoming weak points in the structure. Under continuous vibration loads, fatigue damage easily occurs in the weld seams, leading to cracks in the protective cover and seriously affecting its protective function and the overall reliability of the device. Utility Model Content

[0005] In view of this, the present invention proposes a protective cover for an obstacle detection device. By setting the carbon fiber shell as an integrated box structure and connecting the adjacent surfaces with a rounded transition, the protective cover has no welded structure, is not easy to crack, and has a long service life. It effectively solves the technical problem that existing metal protective covers are prone to cracking under long-term severe vibration of trains, which affects the protective function and overall reliability of the obstacle detection device.

[0006] The technical solution of this utility model is implemented as follows:

[0007] This utility model provides a protective cover for an obstacle detection device, comprising a carbon fiber shell, wherein...

[0008] The carbon fiber shell is an integrated box structure, with open ends at both the rear and bottom.

[0009] The opening at the rear end of the carbon fiber shell is used to connect with the bogie support, and the opening at the bottom end is used to connect with the dustproof rubber sleeve.

[0010] The adjacent surfaces of the carbon fiber shell are connected by a circular arc transition.

[0011] Based on the above technical solutions, preferably, the carbon fiber shell is provided with first bolt mounting holes on both the left and right sides.

[0012] Based on the above technical solutions, preferably, the top of the carbon fiber shell is provided with a second bolt mounting hole.

[0013] Based on the above technical solutions, preferably, the carbon fiber shell has clearance openings on both the left and right sides, wherein...

[0014] The clearance opening is located above the first bolt mounting hole and extends through the sidewalls of the carbon fiber shell to the left and right.

[0015] The rear end of the clearance opening is open.

[0016] Based on the above technical solutions, preferably, a limiting flange is provided on the outer edge of the bottom end of the carbon fiber shell.

[0017] Based on the above technical solutions, preferably, the lateral width of the carbon fiber shell gradually decreases from back to front.

[0018] Based on the above technical solutions, preferably, the bottom of the front end face of the carbon fiber shell is vertical and the top is inclined.

[0019] Based on the above technical solution, preferably, a first metal insert is embedded on both the left and right sides of the carbon fiber shell at the positions corresponding to the first bolt mounting holes, wherein...

[0020] The first metal insert has a first mating hole at the position corresponding to the first bolt mounting hole.

[0021] Based on the above technical solution, preferably, a second metal insert is embedded at the top of the carbon fiber shell at the position corresponding to the second bolt mounting hole, wherein...

[0022] The second metal insert has a second mating hole at the position corresponding to the second bolt mounting hole.

[0023] Based on the above technical solution, preferably, the left and right ends of the second metal insert are bent downwards and extend above the clearance opening to form a reinforcing part, wherein,

[0024] The reinforcing part is provided with a third mating hole;

[0025] The carbon fiber outer shell has a third bolt mounting hole on its side, corresponding to the position of the third mating hole.

[0026] The protective cover for an obstacle detection device of this utility model has the following advantages over the prior art:

[0027] (1) By adopting an integrated carbon fiber shell as the main body of the protective cover and setting it as a box structure with adjacent surfaces connected by arc transitions, the protective cover has a weld-free structure, which effectively improves the overall structural strength and consistency of the protective cover. At the same time, the arc transition connection structure can effectively disperse and release the stress under the continuous vibration load during train operation, which helps to reduce the risk of stress concentration, improve the service life of the protective cover, and effectively ensure the protective function of the internal sensors and the operational reliability of the entire obstacle detection device.

[0028] (2) By setting the lateral width of the carbon fiber shell to gradually decrease from back to front, and the bottom of the front face of the carbon fiber shell to be vertical and the top to be inclined, the overall protective cover has a wedge-shaped structure that is narrow at the front and wide at the back. This helps to reduce the mass of the front part of the protective cover and the area facing the wind or obstacles, thereby reducing the inertial force and sway when impacted, thus reducing the dynamic impact on the protective cover's own structure and its connection parts, and improving the overall stability and vibration resistance reliability. At the same time, compared with metal protective covers, the carbon fiber shell is lighter. During vibration, because the damping of carbon fiber material is better than that of metal material, it can significantly reduce the vibration amplitude, reduce the internal stress of the structure and the load on fasteners, and further extend the service life.

[0029] (3) By setting metal inserts, the structural strength of the bolt mounting hole area is effectively enhanced, avoiding cracking caused by stress concentration, and significantly improving the durability of this part and the overall service life of the protective cover. Attached Figure Description

[0030] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0031] Figure 1 This is a perspective view of a protective cover for an obstacle detection device according to the present invention;

[0032] Figure 2 This is a perspective view of a protective cover for an obstacle detection device according to the present invention.

[0033] Figure 3 This is a top view of a protective cover for an obstacle detection device according to the present invention;

[0034] Figure 4A diagram showing the installation location of the metal insert;

[0035] Figure 5 A three-dimensional view of the metal insert;

[0036] Figure 6 This is a schematic diagram showing the usage status of a protective cover for an obstacle detection device according to this utility model;

[0037] In the diagram: 1. Carbon fiber shell; 2. Bogie support; 3. Dustproof rubber sleeve; 11. First metal insert; 12. Second metal insert; 101. First bolt mounting hole; 102. Second bolt mounting hole; 103. Clearance opening; 104. Limiting flange; 105. Third bolt mounting hole; 1101. First mating hole; 1201. Second mating hole; 121. Reinforcing part; 12101. Third mating hole. Detailed Implementation

[0038] The technical solutions of this utility model will be clearly and completely described below with reference to specific embodiments. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0039] like Figures 1-6 As shown, a protective cover for an obstacle detection device according to the present invention includes a carbon fiber shell 1, which is an integral box structure with open ends at both the rear and bottom. The open end of the carbon fiber shell 1 is used to connect with the bogie support 2, and the open end of the carbon fiber shell 1 is used to connect with the dustproof rubber sleeve 3. Adjacent surfaces of the carbon fiber shell 1 are connected by a rounded transition.

[0040] In this structure, a one-piece molded carbon fiber shell 1 serves as the main body of the protective cover, designed as a box structure with rounded transitions between adjacent surfaces. This fundamentally eliminates the weld seams caused by the splicing and welding of plates in traditional metal protective covers. This seamless, integral structure avoids the critical stress concentration source and fatigue weakness of the weld seam area, significantly improving the overall structural strength and consistency of the protective cover. Simultaneously, the rounded transition connection structure effectively disperses and releases stress under continuous vibration loads during train operation, greatly reducing the risk of stress concentration. Therefore, this protective cover exhibits excellent vibration resistance and fatigue resistance, is not prone to cracking under long-term, severe vibrations of the train, has a long service life, and effectively ensures the protective function of the internal sensors and the operational reliability of the entire obstacle detection device.

[0041] In the aforementioned protective cover structure for the obstacle detection device, the carbon fiber outer shell 1 has first bolt mounting holes 101 on both its left and right sides, and a second bolt mounting hole 102 on its top. When the protective cover needs to be installed on the bogie, the open end of the carbon fiber outer shell 1 is first fitted onto the front end of the bogie support 2, aligning the first bolt mounting holes 101 and 102 with the corresponding mounting holes on the bogie support 2. Then, bolts are inserted into these mounting holes to securely connect the carbon fiber outer shell 1 to the bogie support 2. Multiple mounting points on the sides and top ensure a stable connection and provide reliable support for the protective cover.

[0042] In the protective cover structure for the aforementioned obstacle detection device, the carbon fiber outer shell 1 has clearance openings 103 on both the left and right sides. The clearance openings 103 are located above the first bolt mounting holes 101 and extend through the side walls of the carbon fiber outer shell 1. The rear end of the clearance opening 103 extends rearward to the rear end of the carbon fiber outer shell 1 and is open. When the protective cover is installed in place, the cable leading from the side of the bogie support 2 can pass through the clearance opening 103, allowing for smooth cable exit and preventing the cable from being squeezed or worn by the protective cover structure.

[0043] In the protective cover structure of the aforementioned obstacle detection device, a limiting flange 104 is provided on the outer edge of the bottom end of the carbon fiber shell 1 for clamp limiting. Specifically, during installation, the opening at the bottom end of the carbon fiber shell 1 is inserted into the upper end of the dustproof rubber sleeve 3. Then, a clamp is installed on the outside of the dustproof rubber sleeve 3 and placed above the limiting flange 104. By tightening the clamp, the carbon fiber shell 1 and the dustproof rubber sleeve 3 are fixed together. The limiting flange 104 provides a reliable limiting function, effectively preventing the clamp from slipping down during long-term vibration or use, and ensuring the long-term reliability of the bottom sealing connection.

[0044] In the aforementioned protective cover structure for the obstacle detection device, the lateral width of the carbon fiber shell 1 gradually decreases from back to front, and the bottom of the front end face of the carbon fiber shell 1 is vertical while the top is inclined. This results in a wedge-shaped structure that is narrower at the front and wider at the back when viewed from above. This design not only better fits the layout of the internal triggering structure of the obstacle detection device and optimizes space utilization, but more importantly, it helps reduce the mass and windward / obstacle-facing area of ​​the protective cover. When the vehicle is in motion or encounters an obstacle impact, the smaller frontal mass means lower inertial force and sway amplitude, thereby reducing the dynamic impact on the protective cover's own structure and its connecting parts, further improving overall stability and vibration resistance reliability, and extending service life.

[0045] The vertical part and the inclined part of the front end face of the carbon fiber shell 1 are connected by a small arc transition, and the vertical part is connected to the top surface of the carbon fiber shell 1 by a large arc transition.

[0046] In the protective cover structure for the aforementioned obstacle detection device, first metal inserts 11 are embedded on both the left and right sides of the carbon fiber shell 1 at positions corresponding to the first bolt mounting holes 101. A second metal insert 12 is embedded on the top of the carbon fiber shell 1 at a position corresponding to the second bolt mounting hole 102. The first metal insert 11 has a first mating hole 1101 at a position corresponding to the first bolt mounting hole 101, for mating with a bolt passing through the first bolt mounting hole 101. Similarly, the second metal insert 12 has a second mating hole 1201 at a position corresponding to the second bolt mounting hole 102, for mating with a bolt passing through the second bolt mounting hole 102.

[0047] In this structure, the metal inserts provide a robust and wear-resistant connection base for the bolted connection, solving the problem of easy damage to carbon fiber materials directly bearing bolt tightening forces. They effectively enhance the local structural strength of the bolt mounting hole area, avoid cracking caused by stress concentration, and significantly improve the durability of this critical connection part and the overall service life of the protective cover.

[0048] Furthermore, the left and right ends of the second metal insert 12 are bent downwards and extend above the clearance opening 103 to form a reinforcing portion 121. A third mating hole 12101 is provided on the reinforcing portion 121. A third bolt mounting hole 105 is provided on the side of the carbon fiber shell 1 at the position corresponding to the third mating hole 12101. This structure effectively strengthens and reinforces the clearance opening 103 area, improving the structural stiffness and deformation resistance of this area and preventing cracking due to stress concentration or vibration. In addition, the mating of the third mating hole 12101 and the third bolt mounting hole 105 provides an additional, uniquely positioned connection point, further enhancing the overall connection stability and design flexibility.

[0049] It should be noted that the carbon fiber shell 1 is manufactured using a prepreg molding process, which is an existing mature manufacturing technology. Its specific operation process and parameter control (such as layup design, curing temperature and pressure, mold use, etc.) can be found in the existing technology and will not be elaborated here.

[0050] The method of using the protective cover for the obstacle detection device of this utility model is as follows:

[0051] First, the open end of the carbon fiber shell 1 is fitted onto the front end of the bogie support 2, aligning the first bolt mounting hole 101 and the second bolt mounting hole 102 with the corresponding mounting holes on the bogie support 2. Then, bolts are inserted into these mounting holes to securely connect the carbon fiber shell 1 to the bogie support 2.

[0052] Then, the opening at the bottom of the carbon fiber outer shell 1 is inserted into the upper end of the dustproof rubber sleeve 3. A clamp is installed on the outside of the dustproof rubber sleeve 3 and placed above the limiting flange 104. By tightening the clamp, the carbon fiber outer shell 1 and the dustproof rubber sleeve 3 are fixedly connected.

[0053] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A protective cover for an obstacle detection device, characterized in that: Includes a carbon fiber shell (1), wherein, The carbon fiber shell (1) is an integrated box structure, and its rear end and bottom end are open. The opening at the rear end of the carbon fiber shell (1) is used to connect with the bogie support (2), and the opening at the bottom end is used to connect with the dustproof rubber sleeve (3). The adjacent surfaces of the carbon fiber shell (1) are connected by a circular arc transition.

2. The protective cover for an obstacle detection device as described in claim 1, characterized in that: The carbon fiber shell (1) has first bolt mounting holes (101) on both the left and right sides.

3. The protective cover for an obstacle detection device as described in claim 2, characterized in that: The top of the carbon fiber shell (1) is provided with a second bolt mounting hole (102).

4. A protective cover for an obstacle detection device as described in claim 3, characterized in that: The carbon fiber shell (1) is provided with clearance openings (103) on both the left and right sides, wherein, The clearance opening (103) is located above the first bolt mounting hole (101) and extends through the sidewalls of the carbon fiber shell (1) to the left and right. The rear end of the avoidance opening (103) is open.

5. A protective cover for an obstacle detection device as described in claim 1, characterized in that: A limiting flange (104) is provided on the outer edge of the bottom end of the carbon fiber shell (1).

6. A protective cover for an obstacle detection device as described in claim 1, characterized in that: The lateral width of the carbon fiber shell (1) gradually decreases from back to front.

7. A protective cover for an obstacle detection device as described in claim 6, characterized in that: The bottom of the front end face of the carbon fiber shell (1) is vertical and the top is inclined.

8. A protective cover for an obstacle detection device as described in claim 2, characterized in that: The carbon fiber shell (1) is provided with first metal inserts (11) on both the left and right sides, corresponding to the positions of the first bolt mounting holes (101). A first mating hole (1101) is provided on the first metal insert (11) at the position corresponding to the first bolt mounting hole (101).

9. A protective cover for an obstacle detection device as described in claim 4, characterized in that: A second metal insert (12) is embedded at the top of the carbon fiber shell (1) at a position corresponding to the second bolt mounting hole (102), wherein, A second mating hole (1201) is provided on the second metal insert (12) at the position corresponding to the second bolt mounting hole (102).

10. A protective cover for an obstacle detection device as described in claim 9, characterized in that: The second metal insert (12) is bent downwards at both ends and extends above the clearance opening (103) to form a reinforcing portion (121), wherein, The reinforcing part (121) is provided with a third mating hole (12101). The carbon fiber shell (1) has a third bolt mounting hole (105) on its side and at the position corresponding to the third mating hole (12101).

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