An air gap sensor mounting structure

Abstract

An air gap sensor mounting structure includes a base and an air gap sensor body, the air gap sensor body being detachably mounted on the base. A positioning rod is fixed to the air gap sensor body, and a limit rod is slidably inserted into the positioning rod. A sliding hole is provided on the base for the limit rod to pass through. A limit block is fixed to the bottom side wall of the limit rod, and a limit groove is provided on the side wall of the sliding hole. When the limit block is engaged with the limit groove, the positions of the air gap sensor body and the base are locked. This application can solve the problem of air gap sensor shaking caused by rusted and loose bolts, which reduces the accuracy of equipment monitoring data.

Description

Technical Field

[0001] This utility model belongs to the technical field of air gap sensors, and specifically relates to an air gap sensor mounting structure. Background Technology

[0002] An air gap sensor is a precision sensor used to measure the air gap between two relatively moving parts. It is widely used in rotating machinery such as motors, generators, turbines, and bearings to monitor changes in the gap between the rotor and stator. The stability of the air gap is crucial to the operating efficiency, safety, and lifespan of the equipment, so air gap sensors play an important role in the industrial field.

[0003] Existing air gap sensors are installed by bolts to monitor the gap change between the rotor and stator of the equipment. In order to ensure the accuracy of the monitoring, calibration is usually required before the air gap sensor is installed. However, bolts are prone to corrosion after long-term use, which can cause the air gap sensor to shake and reduce the accuracy of the monitoring data. Utility Model Content

[0004] This invention provides an air gap sensor mounting structure to solve the problem of reduced monitoring accuracy due to air gap sensor wobbling.

[0005] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows:

[0006] An air gap sensor mounting structure includes a base and an air gap sensor body, wherein the air gap sensor body is detachably mounted on the base;

[0007] A positioning rod is fixed on the main body of the air gap sensor, and a limiting rod is slidably inserted into the positioning rod. A sliding hole is provided on the base for the limiting rod to pass through.

[0008] A limiting block is fixed to the bottom side wall of the limiting rod, and a limiting groove is opened on the side wall of the sliding hole. When the limiting block is engaged with the bottom wall of the base, the air gap sensor body and the base are locked in position.

[0009] Furthermore, the sliding hole includes a circular hole and a second through groove, the circular hole and the second through groove are connected and have the same height;

[0010] The circular hole is for the limiting rod to pass through, and the second through slot is for the limiting block to pass through.

[0011] Furthermore, one side of the limiting groove penetrates the bottom wall of the base, and the limiting groove and the second through groove are arranged opposite to each other.

[0012] Furthermore, a first through groove is formed inside the positioning rod, and a sliding rod is connected to the top of the positioning rod. Both the sliding rod and the limiting rod are slidably installed in the first through groove, and part of the limiting rod extends out of the positioning rod.

[0013] Furthermore, a pressure rod is slidably disposed inside the slide rod, with one end of the pressure rod extending out of the top of the slide rod and the other end extending out of the bottom of the slide rod and fixed to the top of the lower limiting rod; the pressure rod drives the limiting rod to move and rotate.

[0014] Furthermore, the slide bar has a cavity inside, and the section of the pressure rod located in the cavity is fitted with a spring; a pressure plate is fixedly fitted onto the pressure rod, and the pressure plate is used to press down the spring.

[0015] Furthermore, a positioning plate is fixed to the top of the slide rod. The area of ​​the positioning plate is larger than the area of ​​the first through groove, and the positioning plate can fit against the top of the positioning rod.

[0016] Furthermore, a baffle for sealing the sliding hole is rotatably installed on the bottom wall of the base. After the sliding rod and the limiting rod are installed, the baffle rotates to seal the sliding hole and abuts against the bottom wall of the limiting rod.

[0017] Furthermore, a top cap is threaded onto the top of the positioning rod, and a receiving cavity is formed inside the top cap to accommodate the pressure rod. The height of the receiving cavity is higher than the height of the pressure rod extending out of the positioning plate.

[0018] Furthermore, a limiting plate is installed on the top of the base, and sliders are fixed on both sides of the air gap sensor body;

[0019] When installing the air gap sensor body, the sliders are respectively inserted into a limiting plate.

[0020] The present invention can achieve the following beneficial effects:

[0021] 1. This utility model sets a limiting block at the bottom of the limiting rod and opens a limiting groove on the bottom wall of the base. By snapping the limiting block into the limiting groove, the air gap sensor body and the base can be detachably installed. The installation structure of this application can replace the bolt connection method, reducing the equipment shaking caused by bolt rust, which would affect the equipment detection stability.

[0022] 2. Specifically, this utility model involves a sliding rod and a limiting rod passing through a positioning rod and a sliding hole. By pressing the pressure rod, the limiting rod moves downward. At this time, the spring is compressed and generates elastic force. By rotating the sliding rod and the limiting rod, the limiting block rotates and moves closer to each other. Under the action of the elastic restoring force of the spring, the limiting block is housed inside the limiting groove, thereby achieving locking. The operation is simple and convenient.

[0023] 3. This application has a baffle installed at the bottom of the base. On the one hand, it can prevent contaminants from entering through the sliding hole, and on the other hand, it can press against the sliding rod and the limiting rod to prevent the sliding rod and the limiting rod from sliding out or falling off from the bottom of the sliding hole. Attached Figure Description

[0024] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0025] Figure 1 This is a schematic diagram of the overall structure of an air gap sensor mounting structure according to the present invention;

[0026] Figure 2 This is a front view structural diagram of the main body of the air gap sensor of this utility model;

[0027] Figure 3 This is a schematic diagram of the disassembled structure of the base in rear cross-section of this utility model;

[0028] Figure 4 This is a rear-view disassembled structural diagram of the air gap sensor body of this utility model;

[0029] Figure 5 This is a front view cross-sectional structural diagram of the slide bar of this utility model.

[0030] The attached diagram lists the components represented by each number as follows:

[0031] 1. Base; 11. Round hole; 12. Limiting groove; 13. Second through groove; 14. Limiting plate;

[0032] 2. Air gap sensor body; 21. Positioning rod; 211. First through groove; 22. Slide rod; 221. Spring; 222. Positioning plate; 223. Pressure plate; 224. Cavity; 23. Limiting rod; 231. Limiting block; 24. Pressure rod; 25. Top cap; 26. Slider;

[0033] 3. Baffle; 4. Protective cover. Detailed Implementation

[0034] To facilitate understanding of this application, a more complete description will be provided below with reference to the accompanying drawings, which illustrate embodiments of the present application. However, the present application can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that the disclosure of this application will be thorough and complete.

[0035] like Figures 1 to 5 As shown, an air gap sensor mounting structure includes a base 1 and an air gap sensor body 2, the air gap sensor body 2 being detachably mounted on the base 1.

[0036] Two positioning rods 21 are fixedly installed at the rear end of the air gap sensor body 2, with the rod body of the positioning rod 21 spaced apart from the air gap sensor body; two sliding holes are opened on the base 1 corresponding to the positions of the positioning rods 21, the sliding holes include round holes 11, and a limit groove 12 is opened on the bottom side of the inner wall of the round holes 11 that is close to each other.

[0037] A slide rod 22 is slidably inserted inside the positioning rod 21. A limiting rod 23 for passing through the round hole 11 is provided at the bottom of the slide rod 22. The end face of the slide rod 22 and the end face of the limiting rod 23 abut against each other.

[0038] A pressure rod 24 is slidably mounted inside the slide rod 22. The pressure rod 24 passes through the slide rod 22 and moves relative to the slide rod 22. The top end of the pressure rod 24 extends out of the end face of the slide rod 22, and the bottom end of the pressure rod 24 is fixedly connected to the limiting rod 23. A cylindrical cavity 224 is formed inside the slide rod 22. A spring 221 is sleeved on the outside of the section of the pressure rod 24 located in the cavity 224. It should be noted that in the specific manufacturing process, the slide rod 22 is divided into two parts, which are connected by threads to form the internal cavity 224. In addition, a spring 221 with high stiffness is selected, with the stiffness standard being that the spring 221 is not easily compressed and rebounded under its own weight.

[0039] A limiting block 231 is fixedly installed on the side wall of the end of the limiting rod 23 away from the slide rod 22. Correspondingly, a first through groove 211 is provided on the side of the positioning rod 21 away from each other; the sliding hole also includes a second through groove 13, which is located on the side of the two circular holes 11 away from each other and communicates with the circular holes 11; the first through groove 211 and the second through groove 13 are used for the limiting block 231 to slide through. A positioning plate 222 is fixedly installed on the top of the slide rod 22. The area of ​​the positioning plate 222 is larger than the area of ​​the first through groove 211, so as to achieve the fit between the positioning plate 222 and the top of the positioning rod 21, restricting the installation position of the slide rod 22 and the limiting rod 23. When the spring 221 is in its natural state, the pressure rod 24 extends out of the positioning plate 222; in addition, a pressure plate 223 is fixedly sleeved on the outside of the section of the pressure rod 24 inside the cavity 224, and the pressure plate 223 is used to compress the spring 221 downward.

[0040] With the above-described structural configuration, the air gap sensor mounting structure of this application extends the slide rod 22 and the limiting rod 23 through the positioning rod 21 and the sliding hole to the bottom of the base 1. At this time, the limiting block 231 slides to the bottom of the base 1 through the first through groove 211 and the second through groove 13. In a preferred embodiment, when the spring 221 is in its natural state, the bottom wall of the limiting block 231 is coplanar with the bottom wall of the base 1.

[0041] By pressing the pressure rod 24, the pressure plate 223 is compressed, causing the spring 221 to be compressed, which in turn separates the limiting rod 23 and the sliding rod 22. At this time, the limiting rod 23 causes the limiting block 231 to extend downward, and the spring 221 generates elastic force after being compressed. After the limiting block 231 moves downward and extends completely out of the base 1, the pressure rod 24 is rotated to make the two limiting blocks 231 rotate closer to each other. When the limiting block 231 is aligned with the limiting groove 12, the pressure on the pressure rod 24 is released. Under the rebound action of the spring 221, the limiting rod 23 moves upward, causing the limiting block 231 to be engaged in the limiting groove 12, thereby realizing the installation and fixation of the limiting rod 23 and the base 1. The installation stability of the limiting rod 23 and the base 1 can be increased by increasing the area of ​​the limiting block 231 and the limiting groove 12. The air gap sensor mounting structure of this application can alleviate the current problem that the bolts rust and loosen after installation due to long-term use, causing the air gap sensor to shake and reducing the accuracy of the equipment monitoring data.

[0042] Furthermore, a baffle 3 is installed on the bottom wall of the base 1 around the sliding hole. The baffle 3 has an anchor point with the bottom wall, and the baffle 3 can rotate around the anchor point to block the sliding hole and the limiting groove 12. When connecting the limiting rod 23 and the base 1, the baffle 3 is rotated to make the bottom of the sliding hole unobstructed, thus successfully completing the installation of the limiting rod 23. When the limiting block 231 moves into the limiting groove 12, the baffle 3 can be rotated to block the sliding hole and the limiting groove 12. At the same time, it can also prevent the limiting rod 23 and the limiting block 231 from automatically sliding out of the circular hole 11 under the action of external force, forming a secondary guarantee for the fixed installation of the limiting rod 23 and the base 1, reducing the possibility of loose installation of the air gap sensor body 2.

[0043] Furthermore, a top cap 25 is movably mounted on the top of the positioning rod 21, and the top cap 25 is threadedly connected to the top of the positioning rod 21. The top cap 25 has a receiving cavity, the height of which is higher than the extension length of the pressure rod 24, thus accommodating the section of the pressure rod 24 extending out of the positioning plate 222. After the air gap sensor body 2 is fixedly installed, the top cap 25 is threadedly fixed to the top of the positioning rod 21 to protect the pressure rod 24, preventing the pressure rod 24 from being subjected to external pressure that would cause the limiting rod 23 to move downwards, resulting in the limiting block 231 sliding out of the limiting groove 12 and losing its fixing effect.

[0044] A limiting plate 14 is fixedly installed on the top wall of the base 1, and two limiting blocks 231 are provided, respectively located on both sides of the air gap sensor body 2. Slider blocks 26 are fixedly provided on both sides of the air gap sensor body 2. The sliders 26 are used to be inserted into the two limiting plates 14, thereby further fixing the air gap sensor body 2 through the engagement of the limiting plates 14 and the sliders 26, thus making the air gap sensor body 2 more securely installed.

[0045] A protective cover 4 is also provided on the outside of the air gap sensor body 2, and the protective cover 4 is fixedly connected to the base 1 by bolts. In particular, after the air gap sensor body 2 is fixedly installed, the protective cover 4 is fixedly installed on the top of the air gap sensor body 2 by bolts to protect it and prevent damage to the air gap sensor body 2 caused by collisions with external debris.

[0046] 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. An air gap sensor mounting structure characterized by: It includes a base (1) and an air gap sensor body (2), wherein the air gap sensor body (2) is detachably mounted on the base (1); A positioning rod (21) is fixed on the air gap sensor body (2), and a limiting rod (23) is slidably inserted into the positioning rod (21). A sliding hole is provided on the base (1) for the limiting rod (23) to pass through. The bottom side wall of the limiting rod (23) is fixed with a limiting block (231), and the side wall of the sliding hole is provided with a limiting groove (12). When the limiting groove (12) and the limiting block (231) on the bottom wall of the base (1) are engaged in the limiting groove (12), the positions of the air gap sensor body (2) and the base (1) are locked.

2. An air gap sensor mounting structure according to claim 1, characterized in that: The sliding hole includes a circular hole (11) and a second through groove (13), the circular hole (11) and the second through groove (13) are connected and have the same height; The circular hole (11) is for the limit rod (23) to pass through, and the second through groove (13) is for the limit block (231) to pass through.

3. An air gap sensor mounting structure according to claim 2, wherein: The limiting groove (12) extends through the bottom wall of the base (1) on one side, and the limiting groove (12) and the second through groove (13) are arranged opposite to each other.

4. An air gap sensor mounting structure according to claim 2, characterized by: The positioning rod (21) has a first through groove (211) through it. The top of the positioning rod (21) is also connected to a sliding rod (22). The sliding rod (22) and the limiting rod (23) are both slidably installed in the first through groove (211), and part of the limiting rod (23) extends out of the positioning rod (21).

5. An air gap sensor mounting structure according to claim 4, wherein: A pressure rod (24) is slidably disposed inside the slide rod (22). One end of the pressure rod (24) extends out of the top of the slide rod (22), and the other end extends out of the bottom of the slide rod (22) and is fixed to the top of the lower limiting rod (23). The pressure rod (24) drives the limiting rod (23) to move and rotate.

6. An air gap sensor mounting structure according to claim 5, wherein: The slide rod (22) has a cavity (224) inside, and the section of the pressure rod (24) located in the cavity (224) is fitted with a spring (221); the pressure rod (24) is fitted with a pressure plate (223), which is used to press down the spring (221).

7. The air gap sensor mounting structure of claim 4, wherein: The top of the slide bar (22) is fixed with a positioning plate (222), the area of ​​the positioning plate (222) is larger than the area of ​​the first through groove (211), and the positioning plate (222) can fit against the top of the positioning rod (21).

8. The air gap sensor mounting structure of claim 4, wherein: The base (1) has a baffle (3) rotatably mounted on its bottom wall for sealing the sliding hole. After the sliding rod (22) and the limiting rod (23) are installed, the baffle (3) rotates to seal the sliding hole and abuts against the bottom wall of the limiting rod (23).

9. An air gap sensor mounting structure according to claim 7, wherein: The top of the positioning rod (21) is threadedly connected to a cap (25), and a receiving cavity for accommodating the pressure rod (24) is formed inside the cap (25). The height of the receiving cavity is higher than the height of the pressure rod (24) extending out of the positioning plate (222).

10. The air gap sensor mounting structure of claim 1, wherein: A limiting plate (14) is installed on the top of the base (1), and sliders (26) are fixed on both sides of the air gap sensor body (2). When the air gap sensor body (2) is installed, the sliding blocks (26) are respectively inserted into one limiting plate (14).

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