Sensor assembly for rail transport

Abstract

The utility model provides a kind of sensor assembly for rail transit, it is related to sensor installation technical field, including installation shell;Mounting is set in installation shell, mounting is provided with rotatable damping part;Sensor body is provided with connecting flanging, connecting flanging is suitable for and the inner wall of installation shell is attached, damping part rotates and cooperates with connecting flanging, to with sensor body is fixed in installation shell, and damping part is suitable for absorbing vibration that installation shell passes to sensor body.The utility model's sensor body's installation and dismounting process can be more simple and fast, operator need not use complex tool or carry out tedious operation step, just sensor body is put into installation shell and rotates damping part, and installation can be completed, improve the installation efficiency of sensor body, simultaneously, damping part can absorb vibration that installation shell passes to sensor body, reduce the damage of vibration to sensor body.

Description

Technical Field

[0001] This utility model relates to the field of sensor installation technology, and more specifically, to sensor components for rail transit. Background Technology

[0002] In rail transit systems, ensuring the safe, efficient, and stable operation of trains is crucial. To achieve real-time monitoring of train operation status, accurate assessment of track conditions, and health management of equipment and facilities, a large number of advanced sensors are needed to collect various key data, such as train speed, acceleration, displacement, vibration, temperature, and pressure, as well as track geometry, stress, and strain. In existing technologies, sensors are mounted on brackets, and the connection between the sensors and the brackets requires numerous bolts and other fasteners, making sensor installation inconvenient. Utility Model Content

[0003] The purpose of this invention is to provide a sensor assembly for rail transit to improve the aforementioned problems. To achieve this purpose, the technical solution adopted by this invention is as follows:

[0004] This application provides a sensor assembly for rail transit, comprising: a mounting housing, at least one side of which is open, and one sidewall of which is adapted to be connected to a mounting position; a mounting member disposed within the mounting housing, the mounting member having a rotatable vibration damping portion; and a sensor body having a connecting flange adapted to fit against the inner wall of the mounting housing, the vibration damping portion rotating and engaging with the connecting flange to fix the sensor body within the mounting housing, and the vibration damping portion being adapted to absorb vibrations transmitted from the mounting housing to the sensor body.

[0005] According to some embodiments of the present invention, the mounting housing includes a side plate and a top plate connected to each other, and a mounting groove suitable for accommodating the sensor body is defined between the side plate and the top plate. Both the side plate and the top plate are provided with the mounting element.

[0006] According to some embodiments of the present invention, the mounting component includes a connecting rod, and the connecting rod is provided on both the side plate and the top plate. A first spring and a pressure plate are sleeved on the outer periphery of the connecting rod. One end of the first spring is connected to the connecting rod, and the other end of the first spring is connected to the pressure plate.

[0007] According to some embodiments of the present invention, one end of the pressure plate is sleeved on the connecting rod, and the other end of the pressure plate is provided with a rubber pad, which is located between the pressure plate and the connecting flange.

[0008] According to some embodiments of the present invention, the pressure plate is provided with a connecting hole that opens toward the connecting flange, and a movable rod is provided on the side of the rubber pad facing the pressure plate, and a portion of the movable rod is movably accommodated in the connecting hole.

[0009] According to some embodiments of the present invention, a second spring is also included. The second spring is disposed in the connecting hole, one end of the second spring is connected to the pressure plate, and the other end of the second spring is connected to the side of the moving rod away from the rubber pad.

[0010] According to some embodiments of the present invention, the rubber pad includes a body portion and a guide portion disposed on the outer peripheral wall of the body portion, wherein the thickness of the guide portion gradually increases in the direction toward the pressure plate.

[0011] According to some embodiments of the present invention, the connecting rod includes a rod body and a connecting cap. One end of the rod body is adapted to be connected to a side plate or a top plate. The outer peripheral wall of the other end of the rod body is provided with a first thread, and the inner peripheral wall of the connecting cap is provided with a second thread. The first thread is adapted to cooperate with the second thread.

[0012] According to some embodiments of the present invention, the top plate and the side plate are provided with mounting holes, the inner peripheral wall of the mounting opening is provided with a third thread, and the outer peripheral wall of one end of the rod is provided with a fourth thread. The third thread and the fourth thread cooperate to connect the rod to the top plate or the side plate.

[0013] According to some embodiments of the present invention, the mounting shell further includes two reinforcing plates, which are respectively connected to the top plate and the side plate, and the top plate, the side plate and the two reinforcing plates together define the mounting groove.

[0014] The beneficial effects of this utility model are as follows:

[0015] The installation and disassembly process of the sensor body of this utility model is simpler and faster. Operators do not need to use complicated tools or perform cumbersome operation steps. They only need to put the sensor body into the mounting shell and rotate the vibration damping part to complete the installation. This improves the installation efficiency of the sensor body and reduces the installation cost. At the same time, the vibration damping part can effectively absorb the vibration transmitted from the mounting shell to the sensor body, reduce the damage of vibration to the sensor body, extend the service life of the sensor body, and reduce the maintenance and replacement cost of the sensor body.

[0016] Other features and advantages of this invention will be set forth in the following description, and will be apparent in part from the description, or may be learned by practicing embodiments of the invention. The objects and other advantages of this invention can be realized and obtained by means of the structures particularly pointed out in the written description, claims, and drawings. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram showing the fit between the mounting shell and the mounting component of this utility model;

[0019] Figure 2 This is a partial sectional view of the mating of the top plate and the mounting component of this utility model;

[0020] Figure 3 This is a schematic diagram of the structure of the sensor body of this utility model;

[0021] Figure 4 This is a schematic diagram of the structure of the rubber pad of this utility model.

[0022] Marked in the image:

[0023] 11. Side plate; 12. Top plate; 13. Reinforcing plate; 20. Mounting component; 21. Connecting rod; 211. Rod body; 212. Connecting cap; 22. First spring; 23. Pressure plate; 24. Rubber pad; 241. Main body; 242. Guide part; 25. Moving rod; 26. Second spring; 30. Sensor body; 31. Connecting flange. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. The components of the embodiments of this utility model described and shown in the accompanying drawings can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of this utility model provided in the accompanying drawings is not intended to limit the scope of the claimed utility model, but merely to illustrate selected embodiments of the utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without inventive effort are within the scope of protection of this utility model.

[0025] It should be noted that similar reference numerals and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures. Furthermore, in the description of this utility model, terms such as "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0026] like Figures 1-4 As shown, this embodiment provides a sensor assembly for rail transit, including: a mounting housing, a mounting member 20, and a sensor body 30. At least one side of the mounting housing is open, and one side wall of the mounting housing is adapted to be connected to a mounting position. The mounting member 20 is disposed inside the mounting housing and is provided with a rotatable vibration damping part. The sensor body 30 is provided with a connecting flange 31, which is adapted to fit against the inner wall of the mounting housing. The vibration damping part rotates and cooperates with the connecting flange 31 to fix the sensor body 30 inside the mounting housing, and the vibration damping part is adapted to absorb the vibration transmitted from the mounting housing to the sensor body 30.

[0027] In some embodiments, at least one side of the mounting housing is open to facilitate the installation and removal of the sensor body 30. Simultaneously, one sidewall of the mounting housing is used to connect with a mounting location (which may be a specific part on the rail transit vehicle) to ensure that the sensor assembly can be securely installed in a predetermined position. The mounting member 20 is disposed inside the mounting housing and has a rotatable vibration damping section. The sensor body 30 is used to sense and detect various physical quantities (such as speed, vibration, temperature, etc.) during rail transit operation. The sensor body 30 is provided with a connecting flange 31, which is adapted to fit against the inner wall of the mounting housing. The connecting flange 31 cooperates with the rotatable vibration damping section on the mounting member 20 to achieve fixed installation of the sensor body 30 within the mounting housing. Furthermore, the vibration damping section on the mounting member 20 has the ability to absorb vibrations transmitted from the mounting housing to the sensor body 30, thereby protecting the sensor body 30 from excessive vibration and ensuring the normal operation of the sensor body 30.

[0028] It is understood that, during the installation of the sensor assembly of this application, the mounting shell can be connected to the sensor body 30 first, and then the sensor assembly can be set in the mounting position as a whole; alternatively, the mounting shell can be set in the mounting position first, and then the sensor body 30 can be connected to the mounting shell. There is no limitation here.

[0029] When assembling the sensor assembly, the operator only needs to place the sensor body 30 inside the mounting housing and fit the connecting flange 31 of the sensor body 30 against the inner wall of the mounting housing. Then, rotate the vibration damping part and make the vibration damping part cooperate with the connecting flange 31 to complete the assembly of the sensor assembly.

[0030] It is worth mentioning that after the connecting flange 31 is attached to the inner wall of the mounting shell, the vibration damping part can rotate to the side of the connecting flange 31 away from the inner wall of the mounting shell, and the vibration damping part and the connecting flange 31 abut against each other. Thus, the vibration damping part and the mounting shell cooperate to clamp the connecting flange 31, thereby ensuring that the sensor body 30 can be stably installed in the mounting shell.

[0031] According to the sensor assembly for rail transit of this utility model, the installation and disassembly process of the sensor body 30 can be made simpler and faster. Operators do not need to use complicated tools or perform cumbersome operating procedures. They only need to put the sensor body 30 into the mounting shell and rotate the vibration damping part to complete the installation. This improves the installation efficiency of the sensor body 30 and reduces the installation cost. At the same time, the vibration damping part can effectively absorb the vibration transmitted from the mounting shell to the sensor body 30, reduce the damage of vibration to the sensor body 30, extend the service life of the sensor body 30, and reduce the maintenance and replacement cost of the sensor body 30.

[0032] According to some embodiments of the present invention, the mounting housing includes a side plate 11 and a top plate 12 connected to each other, and a mounting groove suitable for accommodating the sensor body 30 is defined between the side plate 11 and the top plate 12. Both the side plate 11 and the top plate 12 are provided with mounting members 20.

[0033] In some embodiments, the side plate 11 and the top plate 12 are combined together by means such as welding or bolting. The side plate 11 and the top plate 12 together define a mounting groove. The sensor body 30 is disposed in the mounting groove to prevent the sensor body 30 from protruding from the mounting shell, thereby preventing the sensor body 30 from bumping into other objects and ensuring the safety and stability of the sensor body 30 in use.

[0034] It is understood that both the side plate 11 and the top plate 12 are provided with mounting parts 20. The mounting parts 20 corresponding to the side plate 11 cooperate with the side plate 11 to press and connect the flange 31 in the horizontal direction, and the mounting parts 20 corresponding to the top plate 12 cooperate with the top plate 12 to press and connect the flange 31 in the vertical direction. Thus, the above-mentioned arrangement can limit the degree of freedom of the sensor body 30 after it is set in the mounting groove, thereby ensuring that the sensor body 30 can be stably set in the mounting groove.

[0035] It should be noted that after the mounting part 20 corresponding to the side plate 11 cooperates with the side plate 11 to press and connect the flange 31, the mounting part of the mounting part 20 corresponding to the side plate 11 can be mainly used to absorb the vibration transmitted from the mounting shell to the sensor body 30 in the horizontal direction; after the mounting part 20 corresponding to the top plate 12 cooperates with the top plate 12 to press and connect the flange 31, the mounting part of the mounting part 20 corresponding to the top plate 12 can be mainly used to absorb the vibration transmitted from the mounting shell to the sensor body 30 in the vertical direction. Therefore, through the above arrangement, the amount of vibration transmitted from the mounting shell to the sensor body 30 in both the horizontal and vertical directions is small, ensuring the stable operation of the sensor body 30.

[0036] It is worth mentioning that the top plate 12 and / or the side plate 11 are connected to the mounting position.

[0037] According to some embodiments of the present invention, the mounting component 20 includes a connecting rod 21. The side plate 11 and the top plate 12 are both provided with connecting rods 21. A first spring 22 and a pressure plate 23 are sleeved on the outer periphery of the connecting rod 21. One end of the first spring 22 is connected to the connecting rod 21, and the other end of the first spring 22 is connected to the pressure plate 23.

[0038] In some embodiments, the pressure plate 23 and the first spring 22 together form a vibration damping section. After the connecting flange 31 contacts the top plate 12 or the side plate 11, the operator rotates the pressure plate 23 and causes the side of the pressure plate 23 opposite to the inner wall of the mounting groove to abut, thereby fixing the sensor body 30. When the mounting housing vibrates, the first spring 22 can absorb vibrations from the horizontal and vertical directions, reducing the intensity and amplitude of vibrations directly transmitted to the sensor body 30, thereby protecting the sensor body 30 from excessive vibration and ensuring the normal operation of the sensor body 30.

[0039] It is worth mentioning that, since the first spring 22 has a certain elasticity, the first spring 22 can be adaptively adjusted to a certain extent according to the shape and installation position of the sensor body 30, so that the pressure plate 23 is tightly attached to the side surface of the connecting flange 31 facing away from the inner wall of the mounting groove, thereby applying a stable pressure to the sensor body 30 and thus fixing the sensor body 30 stably in the mounting groove.

[0040] According to some embodiments of the present invention, one end of the pressure plate 23 is sleeved on the connecting rod 21, and the other end of the pressure plate 23 is provided with a rubber pad 24, which is located between the pressure plate 23 and the connecting flange 31.

[0041] In some embodiments, the first spring 22, the pressure plate 23, and the rubber pad 24 together constitute a vibration damping part, with the rubber pad 24 located between the pressure plate 23 and the connecting flange 31. When the rail transit is in operation and generates vibration, the vibration energy is transmitted from the mounting shell to the mounting component 20, and then acts on the pressure plate 23. At this time, the rubber pad 24 will undergo elastic deformation to absorb and consume a portion of the vibration energy, converting the mechanical vibration into its own internal energy, thereby reducing the intensity and amplitude of the vibration transmitted to the connecting flange 31 of the sensor body 30, and further protecting the sensor body 30 from vibration damage.

[0042] Therefore, by setting a rubber pad 24 on the pressure plate 23, and the rubber pad 24 being located between the pressure plate 23 and the connecting flange 31, the vibration damping part can further absorb the vibration transmitted to the sensor body 30 by the mounting shell, thus making the vibration damping effect of the sensor body 30 better.

[0043] According to some embodiments of the present invention, the pressure plate 23 is provided with a connecting hole that opens toward the connecting flange 31, and the rubber pad 24 is provided with a moving rod 25 on the side facing the pressure plate 23, and part of the moving rod 25 is movably accommodated in the connecting hole.

[0044] In some embodiments, the first spring 22, pressure plate 23, rubber pad 24 and moving rod 25 are collectively constructed as a vibration damping part. The extension direction of the connecting hole is parallel to the thickness direction of the pressure plate 23. The inner peripheral wall of the connecting hole can restrict the outer peripheral wall of the moving rod 25, so that the moving rod 25 can move stably along the extension direction of the connecting hole, thereby allowing the rubber pad 24 to move stably relative to the pressure plate 23 in the thickness direction of the pressure plate 23.

[0045] Understandably, when the rail transit system is in operation and generates vibrations, the vibration energy is transferred to the pressure plate 23 and the rubber pad 24. When the rubber pad 24 is under pressure, the moving rod 25 moves within the connecting hole, allowing the rubber pad 24 to adaptively adjust to a certain extent according to the magnitude and direction of the vibration. Specifically, during vibration, the rubber pad 24 can change its relative position to the pressure plate 23 by moving the moving rod 25 within the connecting hole, thereby better performing its buffering function, absorbing and dissipating vibration energy, and reducing the impact of vibration on the sensor body 30.

[0046] According to some embodiments of the present invention, the sensor assembly further includes a second spring 26, which is disposed in the connection hole. One end of the second spring 26 is connected to the pressure plate 23, and the other end of the second spring 26 is connected to the side of the moving rod 25 away from the rubber pad 24.

[0047] In some embodiments, the first spring 22, the pressure plate 23, the rubber pad 24, the moving rod 25, and the second spring 26 together constitute a vibration damping part.

[0048] Understandably, when rail transit is in operation and generates vibrations, the vibration energy is transferred to the rubber pad 24 and the moving rod 25. Besides the buffering effect of the rubber pad 24 itself, the second spring 26 also participates in the buffering process. Specifically, when the moving rod 25 is subjected to pressure and moves into the connecting hole, the second spring 26 absorbs a portion of the vibration energy and undergoes elastic deformation, converting the mechanical vibration into its own internal energy. Therefore, the cooperation between the rubber pad 24 and the second spring 26 can more effectively attenuate vibrations and reduce the impact of vibrations on the sensor body 30.

[0049] According to some embodiments of the present invention, the rubber pad 24 includes a body portion 241 and a guide portion 242 disposed on the outer peripheral wall of the body portion 241, the thickness of the guide portion 242 gradually increasing in the direction toward the pressure plate 23.

[0050] In some embodiments, the thickness of the guide portion 242 gradually increases in the direction toward the pressure plate 23, thereby the cross section of the guide portion 242 located on one side of the body portion 241 is a shape similar to a right triangle or a fan shape.

[0051] Understandably, when the vibration damping part is engaged with the connecting flange 31, the vibration damping part rotates to engage with the connecting flange 31. As a result, during the installation process, the guide part 242 first contacts the connecting flange 31. Since the thickness of the guide part 242 gradually increases towards the pressure plate 23, as the installation progresses (the vibration damping part rotates), the guide part 242 will guide the vibration damping part as it rotates relative to the connecting flange 31. This makes it easier for the vibration damping part to abut against the side of the connecting flange 31 away from the inner wall of the mounting groove, reducing the jamming phenomenon during the rotation of the vibration damping part.

[0052] According to some embodiments of the present invention, the connecting rod 21 includes a rod body 211 and a connecting cap 212. One end of the rod body 211 is adapted to be connected to the side plate 11 or the top plate 12. The outer peripheral wall of the other end of the rod body 211 is provided with a first thread, and the inner peripheral wall of the connecting cap 212 is provided with a second thread. The first thread is adapted to cooperate with the second thread.

[0053] In some embodiments, one end of the pressure plate 23 is provided with a through hole, and the other end of the pressure plate 23 is provided with a rubber component. When assembling the mounting component 20, the first spring 22 is first sleeved on the outer periphery of the rod body 211, and one end of the first spring 22 is connected to the top plate 12 or the side plate 11. Then, the pressure plate 23 is sleeved on the rod body 211 through the through hole. Finally, the second thread of the connecting cap 212 engages with the first thread of the rod body 211 to connect the connecting cap 212 to the rod body 211, while limiting the first spring 22 and the pressure plate 23. Thus, the above arrangement makes the assembly of the mounting component 20 and the mounting shell simpler, and also facilitates the inspection and replacement of the first spring 22, the pressure plate 23, and the connecting cap 212.

[0054] It is worth mentioning that after the pressure plate 23 and the connecting flange 31 are engaged, the operator can increase or decrease the clamping force of the pressure plate 23 on the connecting flange 31 by rotating the connecting cap 212, thereby ensuring the stable installation of the sensor body 30.

[0055] According to some embodiments of the present invention, the top plate 12 and the side plate 11 are provided with mounting holes, the inner peripheral wall of the mounting hole is provided with a third thread, and the outer peripheral wall of one end of the rod 211 is provided with a fourth thread. The third thread and the fourth thread cooperate to connect the rod 211 to the top plate 12 or the side plate 11.

[0056] In some embodiments, the fourth thread of the rod 211 engages with the third thread of the mounting hole, thereby connecting the rod 211 to the top plate 12 or the side plate 11. This simplifies the assembly and disassembly of the rod 211 and the mounting housing, further improving the efficiency of the assembly and disassembly of the mounting component 20 and the mounting housing. Furthermore, the rod 211 can be replaced individually if damaged, reducing the maintenance cost of the sensor assembly.

[0057] According to some embodiments of the present invention, the mounting shell also includes two reinforcing plates 13, which are respectively connected to the top plate 12 and the side plate 11. The top plate 12, the side plate 11 and the two reinforcing plates 13 together define the mounting groove.

[0058] In some embodiments, the reinforcement plate 13 increases the overall structural strength of the mounting housing. Specifically, during rail transit operation, the sensor assembly is subjected to various external forces, such as vibration, impact, and its own weight. The reinforcement plate 13 of this application, by connecting with the top plate 12 and the side plate 11, forms a more stable mounting housing, which can effectively disperse and bear the aforementioned external forces, reduce the risk of deformation and damage to the top plate 12 and the side plate 11, and thus better protect the sensor body 30 within the mounting slot.

[0059] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

[0060] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the scope of the claims.

Claims

1. A sensor assembly for rail transportation, characterized in that, include: Mounting housing, at least one side of which is open, and one sidewall of which is adapted to be connected to a mounting position; Mounting component (20), which is disposed inside the mounting housing, and is provided with a rotatable vibration damping part; The sensor body (30) is provided with a connecting flange (31), which is adapted to fit against the inner wall of the mounting shell. The vibration damping part rotates and cooperates with the connecting flange (31) to fix the sensor body (30) inside the mounting shell, and the vibration damping part is adapted to absorb the vibration transmitted from the mounting shell to the sensor body (30).

2. The sensor assembly for rail transit according to claim 1, characterized in that, The mounting housing includes a side plate (11) and a top plate (12) connected to each other, with a mounting groove between the side plate (11) and the top plate (12) defined for receiving a sensor body (30), and the mounting member (20) is provided on both the side plate (11) and the top plate (12).

3. The sensor assembly for rail transit according to claim 2, characterized in that, The mounting component (20) includes a connecting rod (21). The connecting rod (21) is provided on both the side plate (11) and the top plate (12). A first spring (22) and a pressure plate (23) are sleeved on the outer periphery of the connecting rod (21). One end of the first spring (22) is connected to the connecting rod (21), and the other end of the first spring (22) is connected to the pressure plate (23).

4. The sensor assembly for rail transit according to claim 3, characterized in that, One end of the pressure plate (23) is sleeved on the connecting rod (21), and the other end of the pressure plate (23) is provided with a rubber pad (24). The rubber pad (24) is located between the pressure plate (23) and the connecting flange (31).

5. The sensor assembly for rail transit according to claim 4, characterized in that, The pressure plate (23) is provided with a connection hole that opens toward the connection flange (31), and the rubber pad (24) is provided with a moving rod (25) on the side facing the pressure plate (23), and part of the moving rod (25) is movably accommodated in the connection hole.

6. The sensor assembly for rail transit according to claim 5, characterized in that, It also includes a second spring (26), which is disposed in the connecting hole. One end of the second spring (26) is connected to the pressure plate, and the other end of the second spring (26) is connected to the side of the moving rod (25) away from the rubber pad (24).

7. The sensor assembly for rail transit according to claim 4, characterized in that, The rubber pad (24) includes a body part (241) and a guide part (242) disposed on the outer peripheral wall of the body part (241), the thickness of the guide part (242) gradually increasing in the direction toward the pressure plate (23).

8. The sensor assembly for rail transit according to claim 3, characterized in that, The connecting rod (21) includes a rod body (211) and a connecting cap (212). One end of the rod body (211) is adapted to be connected to the side plate (11) or the top plate (12). The outer peripheral wall of the other end of the rod body (211) is provided with a first thread, and the inner peripheral wall of the connecting cap (212) is provided with a second thread. The first thread is adapted to cooperate with the second thread.

9. The sensor assembly for rail transit according to claim 8, characterized in that, The top plate (12) and the side plate (11) are provided with mounting holes. The inner peripheral wall of the mounting hole is provided with a third thread, and the outer peripheral wall of one end of the rod (211) is provided with a fourth thread. The third thread and the fourth thread cooperate to connect the rod (211) to the top plate (12) or the side plate (11).

10. The sensor assembly for rail transit according to claim 2, characterized in that, The mounting shell also includes two reinforcing plates (13), which are connected to the top plate (12) and the side plate (11) respectively. The top plate (12), the side plate (11) and the two reinforcing plates (13) together define the mounting groove.

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