Sensor fixing device for subway vibration data acquisition

Abstract

The utility model relates to the technical field of sensor fixing equipment, in particular to a sensor fixing device for subway vibration data acquisition, which is characterized in that two first empty slots, limiting blocks and second empty slots are symmetrically arranged at two ends of a vibration data acquisition sensor main body, and the second empty slots are positioned at the upper ends of the first empty slots and are communicated with the first empty slots; the limiting block is inserted into the first empty slot and is in sliding connection with the first empty slot; a sliding block penetrating through the second empty groove is vertically arranged at the rear end of the limiting block, the sliding block is in sliding connection with the second empty groove, a shifting block is arranged at the top end of the sliding block, the shifting block and the sliding block are of an integrated structure, a double-fixing mode that spring elasticity is matched with magnetic attraction is adopted, the spring provides continuous forward thrust, and it is ensured that the limiting block is stably embedded into the clamping groove; the connection tightness is further enhanced through the magnetic attraction effect of the magnetic attraction block and the mounting groove, the loosening problem caused by long-term high-frequency vibration in traditional bolt fixation is effectively avoided, and the accuracy of vibration data acquisition is guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of sensor fixing equipment technology, specifically a sensor fixing device for collecting vibration data in subways. Background Technology

[0002] During the operation of a subway system, the high-frequency vibrations generated by wheel-rail contact are a key data source for assessing track condition, train operation safety, and the impact on the surrounding environment. To accurately capture these vibration signals, sensors need to be stably mounted on the web or side of the rail head to directly obtain the dynamic response of wheel-rail interaction.

[0003] Currently, the industry commonly uses bolts to connect sensors to rails. However, during high-speed operation of subway trains, the wheel-rail contact generates continuous high-frequency impacts and periodic vibrations. Over time, bolts are prone to loosening due to fatigue, leading to relative displacement between the sensor and the rail. This loosening not only causes distortion in vibration signal acquisition, affecting data accuracy, but may also pose track safety hazards due to sensor detachment, increasing maintenance costs and frequency. Utility Model Content

[0004] (a) Technical problems to be solved

[0005] To address the shortcomings of existing technologies, this utility model provides a sensor fixing device for collecting vibration data in subways.

[0006] (II) Technical Solution

[0007] To achieve the above objectives, the present invention provides the following technical solution: a fixing device for a vibration data acquisition sensor, comprising a guide rail body and a vibration data acquisition sensor body, wherein two limiting seats are symmetrically arranged on one side of the guide rail body, and an installation groove is provided between the two limiting seats, and a slot is provided on the inner wall of the installation groove, wherein the vibration data acquisition sensor body is inserted into the installation groove and is tightly fitted with the inner wall of the installation groove and the outer wall of the guide rail body;

[0008] The vibration data acquisition sensor body has two symmetrically arranged first slots, limiting blocks, and second slots at both ends. The second slot is located above the first slot and communicates with it. The limiting block is inserted into the first slot and slidably connected to it. A slider is vertically arranged through the second slot at the rear end of the limiting block. The slider is slidably connected to the second slot. A toggle block is provided at the top of the slider. The toggle block and the slider are an integral structure. A magnetic block is embedded at the outer end of the limiting block. The outer end of the limiting block is inserted into the slot, and the magnetic block is magnetically attracted to the mounting slot. A cavity is provided at the rear end of the second slot. A spring is provided in the cavity. A support rod is provided at the rear end of the slider, inserted into the cavity and connected to the front end of the spring. The limiting seat is welded to the outer wall of the guide rail body.

[0009] To make the vibration data acquisition sensor body more securely installed, the improvement of this utility model is that the two limiting seats are symmetrically distributed on one side of the guide rail body, and a mounting groove for the vibration data acquisition sensor body to be inserted is formed between them. The magnetic block is embedded in the outer end of the limiting block. When the outer end of the limiting block is inserted into the slot, the magnetic block and the mounting groove form a magnetic attraction.

[0010] Furthermore, an improvement of this utility model is that the second empty groove is located at the upper end of the first empty groove, and the second empty groove is connected to the first empty groove to form a channel through which the slider passes and slides.

[0011] Furthermore, an improvement of this utility model is that the actuating block and the slider are an integrated structure, and the actuating block is located at the top of the slider, so that the slider can be driven to slide in the second slot by the actuating block.

[0012] Furthermore, an improvement of this utility model is that one end of the support rod is connected to the rear end of the slider, and the other end is inserted into the cavity and connected to the front end of the spring inside the cavity.

[0013] (III) Beneficial Effects

[0014] Compared with the prior art, this utility model provides a sensor fixing device for subway vibration data acquisition, which has the following advantages:

[0015] Easy and efficient installation: No drilling is required on the guide rail body. The limit block can be quickly retracted and extended by moving the lever, which simplifies the installation process, greatly shortens the sensor deployment time, and reduces the difficulty of manual operation.

[0016] Strong stability: It adopts a dual fixing method of spring force and magnetic attraction. The spring provides a continuous positive thrust to ensure that the limit block is stably embedded in the slot; the magnetic attraction between the magnetic block and the mounting slot further enhances the tightness of the connection, effectively avoiding the loosening problem caused by long-term high-frequency vibration of traditional bolt fixing, and ensuring the accuracy of vibration data acquisition. Attached Figure Description

[0017] Figure 1 This is a first-view perspective three-dimensional structural diagram of the present invention;

[0018] Figure 2 This is a second-view perspective three-dimensional structural diagram of the present invention;

[0019] Figure 3 This is a schematic diagram of the spring mounting structure in this utility model;

[0020] Figure 4 This utility model Figure 1 Top view;

[0021] Figure 5 This utility model Figure 1 A magnified schematic diagram of the partial structure at point A in the middle;

[0022] In the diagram: 1. Guide rail body; 2. Limiting seat; 3. Mounting slot; 4. Slot; 5. Vibration data acquisition sensor body; 6. First empty slot; 7. Second empty slot; 8. Limiting block; 9. Magnetic block; 10. Slider; 11. Actuating block; 12. Cavity; 13. Spring; 14. Support rod. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] Please see Figures 1-5 The present invention provides a fixing device for a vibration data acquisition sensor, comprising a guide rail body 1 and a vibration data acquisition sensor body 5. Two limiting seats 2 are symmetrically arranged on one side of the guide rail body 1, and an installation groove 3 is provided between the two limiting seats 2. A slot 4 is provided on the inner wall of the installation groove 3. The vibration data acquisition sensor body 5 is inserted into the installation groove 3 and is tightly fitted with the inner wall of the installation groove 3 and the outer wall of the guide rail body 1.

[0025] The vibration data acquisition sensor body 5 has two symmetrically arranged first slots 6, limiting blocks 8, and second slots 7 at both ends. The second slot 7 is located above the first slot 6 and communicates with it. The limiting block 8 is inserted into the first slot 6 and is slidably connected to it. The rear end of the limiting block 8 is vertically arranged with a slider 10 that passes through the second slot 7. The slider 10 is slidably connected to the second slot 7. The top of the slider 10 is provided with a toggle block 11, which is an integral structure with the slider 10. The outer end of the limiting block 8 is inlaid with a magnetic block 9, which is inserted into the slot 4 and magnetically engaged with the mounting slot 3. The rear end of the second slot 7 has a cavity 12, in which a spring 13 is provided. The rear end of the slider 10 is provided with a support rod 14 that is inserted into the cavity 12 and connected to the front end of the spring 13. The limiting seat 2 is welded to the outer wall of the guide rail body 1.

[0026] The second slot 7 is located at the upper end of the first slot 6, and the second slot 7 is connected to the first slot 6 to form a channel through which the slider 10 passes and slides.

[0027] One end of the support rod 14 is connected to the rear end of the slider 10, and the other end is inserted into the cavity 12 and connected to the front end of the spring 13 inside the cavity 12.

[0028] Preparation for installation: The operator first confirms the position of the mounting slot 3 and the slot 4 on the guide rail body 1, and ensures that the first empty slot 6, the second empty slot 7 and other components of the vibration data acquisition sensor body 5 are in normal condition, without jamming or damage.

[0029] Adjust limit block 8:

[0030] The actuating block 11 and the slider 10 are an integrated structure, and the actuating block 11 is located at the top of the slider 10. The slider 10 can be driven to slide in the second slot 7 by the actuating block 11.

[0031] Manually moving the actuating blocks 11 at both ends of the vibration data acquisition sensor body 5 causes the slider 10 to slide within the second slot 7 (towards the cavity 12) as the actuating blocks 11 and slider 10 are an integrated structure. This causes the slider 10 to compress the spring 13 within the cavity 12 via the support rod 14. At this time, the limiting block 8 connected to the slider 10 retracts into the first slot 6, creating space for the sensor body to be inserted into the mounting slot 3.

[0032] Insert the sensor body: Align the vibration data acquisition sensor body 5 with the mounting groove 3 between the two limit seats 2 on the guide rail body 1, and insert it smoothly to ensure that the sensor body fits tightly against the inner wall of the mounting groove 3 and the outer wall of the guide rail body 1, thus ensuring the initial stability of the installation.

[0033] Complete fixation:

[0034] The two limiting seats 2 are symmetrically distributed on one side of the guide rail body 1, and a mounting groove 3 for the vibration data acquisition sensor body 5 to be inserted is formed between them. The magnetic block 9 is embedded in the outer end of the limiting block 8. When the outer end of the limiting block 8 is inserted into the slot 4, the magnetic block 9 and the mounting groove 3 form a magnetic attraction.

[0035] Releasing the actuating block 11 releases the compressed spring 13, which in turn pushes the slider 10 to slide in the opposite direction via the support rod 14. This causes the limiting block 8 to extend out of the first slot 6, with its outer end precisely inserted into the slot 4 on the inner wall of the mounting groove 3. Simultaneously, the magnetic block 9 embedded at the outer end of the limiting block 8 forms a magnetic attraction with the mounting groove 3, further enhancing the connection strength between the limiting block 8 and the slot 4, thus completing the entire fixing process.

[0036] The limiting seat 2 is fixed to the outer wall of the guide rail body 1 by welding, which eliminates the need for additional processing of the guide rail body 1. This avoids damage to the integrity of the guide rail structure caused by drilling and other operations, reduces the risk of stress concentration in the guide rail under high-frequency vibration environment, and extends the service life of the guide rail.

[0037] In the high-frequency vibration environment generated by the contact between subway wheels and rails, the vibration generated by the sensor body is insufficient to compress the spring 13. The connection between the limit block 8 and the slot 4 is stable, effectively preventing the sensor from falling off, reducing maintenance frequency and cost, and ensuring the safety of track operation.

[0038] All components work together, and the connection between the second slot 7 and the first slot 6 provides a stable sliding channel for the slider 10. The integrated toggle block 11 and slider 10 ensure the continuity of operation. The overall structure is compact and functionally clear, and can adapt to the complex vibration environment of the subway for a long time.

[0039] Spring 13 is made of chrome vanadium steel. Chrome vanadium steel has high strength, good toughness and excellent fatigue resistance. It can maintain stable elasticity even under the alternating stress caused by the high-frequency vibration of the subway for a long time, avoiding fracture or elastic failure due to material fatigue, thus ensuring the reliable operation of the entire fixing device.

[0040] In the description herein, it should be noted that relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0041] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention.

Claims

1. A fixing device for a vibration data acquisition sensor, characterized in that, The system includes a guide rail body (1) and a vibration data acquisition sensor body (5). Two limiting seats (2) are symmetrically arranged on one side of the guide rail body (1). An installation groove (3) is provided between the two limiting seats (2). A slot (4) is provided on the inner wall of the installation groove (3). The vibration data acquisition sensor body (5) is inserted into the installation groove (3) and fits tightly against the inner wall of the installation groove (3) and the outer wall of the guide rail body (1). The vibration data acquisition sensor body (5) has two first slots (6), a limiting block (8), and a second slot (7) symmetrically arranged at both ends. The second slot (7) is located at the upper end of the first slot (6) and communicates with the first slot (6). The limiting block (8) is inserted into the first slot (6) and is slidably connected to the first slot (6). A slider (10) is vertically arranged at the rear end of the limiting block (8) and passes through the second slot (7). The slider (10) is slidably connected to the second slot (7). A toggle block (11) is provided at the top of the slider (10). The moving block (11) and the slider (10) are integrated structures; the outer end of the limiting block (8) is inlaid with a magnetic block (9), the outer end of the limiting block (8) is inserted into the slot (4), and the magnetic block (9) is magnetically attracted to the mounting slot (3); the rear end of the second empty slot (7) is provided with a cavity (12), the cavity (12) is provided with a spring (13), the rear end of the slider (10) is provided with a support rod (14) inserted into the cavity (12) and connected to the front end of the spring (13); the limiting seat (2) is welded to the outer wall of the guide rail body (1).

2. The fixing device according to claim 1, characterized in that, The two limiting seats (2) are symmetrically distributed on one side of the guide rail body (1), and a mounting groove (3) is formed between them for the vibration data acquisition sensor body (5) to be inserted.

3. The fixing device according to claim 2, characterized in that, The second slot (7) is located at the upper end of the first slot (6), and the second slot (7) is connected to the first slot (6) to form a channel through which the slider (10) passes and slides.

4. The fixing device according to claim 3, characterized in that, The actuating block (11) and the slider (10) are an integrated structure, and the actuating block (11) is located at the top of the slider (10). The slider (10) can be driven to slide in the second slot (7) by the actuating block (11).

5. The fixing device according to claim 4, characterized in that, The magnetic block (9) is embedded in the outer end of the limiting block (8). When the outer end of the limiting block (8) is inserted into the slot (4), the magnetic block (9) and the mounting slot (3) form a magnetic attraction.

6. The fixing device according to claim 5, characterized in that, One end of the support rod (14) is connected to the rear end of the slider (10), and the other end is inserted into the cavity (12) and connected to the front end of the spring (13) inside the cavity (12).

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