Mounting structure for proximity sensor

Abstract

The utility model provides a kind of mounting structure of proximity sensor, it is related to sensor technical field, including mounting support, short adapter, locking square nut, long adapter, connecting sleeve, shaft sleeve, sealing ring, catheter adapter and flexible catheter etc.;The utility model is through the combination structure of long adapter, short adapter and locking square nut, realize the flexible adjustment of sensor probe and the spacing between measured object, can according to the distance from sensor mounting support screw thread surface to measured object, effectively avoid the spacing out of control problem caused by equipment production assembly error, ensure that interval is always in line with sensor monitoring requirement, avoid the signal capture failure or probe collision damage caused by improper spacing, significantly improve the accuracy of monitoring data under motor seismic scene, provide reliable data support for equipment fault early warning and state evaluation, reduce the equipment maintenance cost and customer complaint risk caused by monitoring error.

Description

Technical Field

[0001] This utility model relates to the field of sensor technology, and in particular to an installation structure for a proximity sensor. Background Technology

[0002] As a key device capable of non-contact monitoring of the proximity of objects, proximity sensors are widely used in various fields such as industrial production and equipment monitoring. Especially in the scenario of motor vibration measurement, they accurately capture vibration signals during motor operation, providing important data support for motor operation status assessment and fault early warning, which is directly related to the motor's operational stability and service life.

[0003] However, existing proximity sensor installation methods present several problems that urgently need to be addressed. In traditional installation structures, sensors are often directly installed around the object being measured, lacking standardized and modular installation adapter components. On the one hand, due to the small size of proximity sensors themselves, and the inevitable dimensional errors and assembly deviations that occur during the manufacturing and assembly of motors and other equipment, it is difficult to accurately control the installation distance between the sensor probe and the object being measured. Often, the distance is too large or too small—if the distance is too large, vibration signals cannot be effectively captured; if the distance is too small, slight displacement during equipment operation may cause the sensor to collide with and be damaged, thus affecting the accuracy of monitoring data and even preventing timely detection of motor failures, increasing equipment maintenance costs and the risk of customer complaints.

[0004] On the other hand, existing installation structures lack flexible adjustment mechanisms. Different models of proximity sensors differ in probe length, installation spacing requirements, etc. Traditional installation methods often require separate installation structures designed for specific sensor models, resulting in poor compatibility. Replacing sensors necessitates disassembling, adjusting, or even modifying installation components, making the process cumbersome and inefficient. Furthermore, traditional installation structures provide insufficient protection for sensor cables, which are directly exposed to the external environment and susceptible to dust, oil, mechanical friction, and other factors, leading to cable damage, signal transmission interruption, and reduced sensor protection levels and lifespan. This fails to meet the high requirements for equipment stability and durability in industrial settings.

[0005] Furthermore, the existing mounting structure suffers from poor component connection stability. Under long-term high-frequency vibration conditions of equipment such as motors, mounting components are prone to loosening and displacement, further exacerbating the problem of uncontrolled mounting spacing and affecting the long-term stable operation of the sensor. Therefore, there is an urgent need for a proximity sensor mounting structure with adjustable spacing, strong compatibility, excellent protection performance, and stable installation to address the aforementioned shortcomings of the existing technology. Utility Model Content

[0006] The purpose of this invention is to provide a mounting structure for a proximity sensor in order to solve the above-mentioned problems.

[0007] To address the aforementioned problems, this utility model provides a technical solution: a proximity sensor mounting structure, comprising a mounting bracket, a short adapter, a locking square nut, a long adapter, a connecting sleeve, a bushing, a sealing ring, a conduit adapter, and a flexible conduit; the mounting bracket is fixedly connected to an external fixing component; the mounting bracket houses the part to be measured; the mounting bracket is threadedly connected to the short adapter; the lower outer surface of the long adapter is threadedly screwed into the short adapter, and a locking square nut for locking is threadedly connected to the lower outer surface of the long adapter; a connecting sleeve is threadedly screwed into the upper end of the long adapter; a conduit adapter is threadedly screwed into the upper end of the connecting sleeve; a bushing is provided between the connecting sleeve and the conduit adapter, and a sealing ring is provided at the connection between the bushing and the conduit adapter; the flexible conduit is snapped onto the bushing; a proximity sensor is connected to the lower interior of the long adapter, and the cable portion of the proximity sensor extends into the flexible conduit.

[0008] Preferably, the mounting bracket has an internal threaded hole adapted to the short adapter, and the outer surface of the short adapter has a corresponding external threaded structure.

[0009] Preferably, the connecting sleeve has internal threads at both ends, one end of which is adapted to the upper external thread of the long adapter, and the other end is adapted to the lower external thread of the conduit adapter.

[0010] Preferably, the sealing ring is made of elastic rubber material, and the inner ring of the sealing ring is tightly fitted with the outer surface of the conduit adapter, and the outer ring is tightly fitted with the inner surface of the connecting sleeve.

[0011] Preferably, the end of the flexible conduit is provided with an annular groove, and the inner wall of the bushing is provided with a protrusion that matches the annular groove. The flexible conduit and the bushing are fixed by the engagement of the groove and the protrusion.

[0012] Preferably, the lower end of the long adapter is provided with a positioning step, the end of the proximity sensor abuts against the positioning step, and the proximity sensor is interference-fitted with the inner wall of the long adapter or fixed by a locking component.

[0013] Preferably, the locking square nut has a square shape and an internal threaded hole that matches the external thread of the long adapter.

[0014] Preferably, the mounting bracket is made of metal and has mounting holes or welding structures for connecting to external fixing components.

[0015] The beneficial effects of this utility model are: (1) Precisely adjust the spacing to ensure monitoring accuracy: This utility model achieves flexible adjustment of the spacing between the sensor probe and the object being measured through a combination structure of a long adapter, a short adapter and a locking square nut. It can effectively avoid the problem of spacing loss due to equipment production and assembly errors based on the distance from the threaded surface of the sensor mounting bracket to the object being measured, ensuring that the spacing always meets the sensor monitoring requirements, avoiding signal capture failure or probe collision damage caused by improper spacing, significantly improving the accuracy of monitoring data in scenarios such as motor vibration measurement, providing reliable data support for equipment fault early warning and status assessment, and reducing equipment maintenance costs and customer complaint risks caused by monitoring errors.

[0016] (2) Compatible with multiple sensor models, enhancing versatility: The installation structure adopts a modular design. The internal thread at the bottom of the long adapter can be adapted to the connection threads of different models of proximity sensors. By adjusting the locking distance and the total height of the long adapter, it can meet the installation requirements of sensors with different probe lengths and different installation spacing requirements. When replacing a sensor, simply loosen the locking square nut, unscrew the long adapter, install the new sensor in the long adapter, and reassemble. There is no need to disassemble the overall mounting bracket or modify the structure, which greatly simplifies the replacement operation process, improves compatibility, reduces the additional design and manufacturing costs caused by changes in sensor models, and enhances the versatility and practicality of the installation structure.

[0017] (3) Enhanced cable protection and improved equipment durability: By using a flexible conduit and a conduit adapter assembly, the cable portion of the proximity sensor is completely encased inside the flexible conduit. One end of the conduit adapter is connected to the internal thread of the long adapter head, and the other end is connected to the internal wiring of the equipment, forming a closed protective structure. This design effectively isolates interference factors such as dust, oil, and mechanical friction in the external environment, avoiding signal transmission interruption caused by cable damage and significantly improving the protection level of the sensor. At the same time, the flexible conduit has a certain degree of flexibility, which can adapt to small displacements under equipment assembly space and vibration conditions, further protecting the cable from external force damage, extending the overall service life of the sensor, and meeting the high requirements for equipment durability in industrial scenarios.

[0018] (4) Stable and reliable structure, adaptable to complex working conditions: The mounting bracket is made of metal and uses threaded connections and slotted clamps for fixing, ensuring tight connection of all components; the long adapter uses 45# steel and other metal materials, while the short adapter uses nylon and other insulating materials, balancing structural strength and insulation performance. Under complex working conditions such as high-frequency vibration of the motor, it can effectively prevent loosening and displacement of components, ensuring the long-term stability of the installation structure. In addition, the sealing ring further enhances the sealing between the connecting sleeve and the conduit adapter, preventing moisture and impurities from seeping into the interior and affecting the performance of the components, ensuring that the sensor continues to work stably in harsh industrial environments, and reducing the frequency and cost of equipment maintenance.

[0019] (5) Simplified installation process and improved operation efficiency: The overall installation structure has a high degree of standardization of components. The components are connected by threaded connections, slotted connections, etc. The assembly process does not require complicated tools and professional skills, making the operation convenient. At the same time, the modular design makes the installation and disassembly steps clear. Whether it is the initial installation or the later maintenance and replacement, it can significantly shorten the operation time, improve the installation and maintenance efficiency, reduce labor costs, and meet the needs of efficient assembly in industrial production.

[0020] (6) Reduced overall costs and optimized user experience: On the one hand, the versatility and compatibility of the structure reduce the customized design and manufacturing costs for different sensors; on the other hand, stable monitoring performance and extended equipment lifespan reduce the frequency of fault repair and component replacement, thus reducing long-term maintenance costs. In addition, precise spacing adjustment and reliable protection performance avoid the escalation of equipment failure losses due to monitoring failure. From initial investment, mid-term maintenance to the entire life cycle of use, it reduces overall costs for users, while improving the stability and safety of equipment operation and optimizing the user experience. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of this utility model.

[0022] Figure 2 This is a side view of the present invention.

[0023] Figure 3 This is a cross-sectional structural diagram of the present invention.

[0024] 1-Part to be tested; 2-Mounting bracket; 3-Short adapter; 4-Locking square nut; 5-Long adapter; 6-Connecting sleeve; 7-Shaft sleeve; 8-Sealing ring; 9-Conduit adapter; 10-Proximity sensor; 11-Flexible conduit. Detailed Implementation

[0025] like Figures 1 to 3As shown, this specific embodiment adopts the following technical solution: a proximity sensor mounting structure, including a mounting bracket 2, a short adapter 3, a locking square nut 4, a long adapter 5, a connecting sleeve 6, a bushing 7, a sealing ring 8, a conduit adapter 9, and a flexible conduit 11; the mounting bracket 2 is fixedly connected to an external fixing component through mounting holes or welding structures on its surface. The mounting bracket 2 is made of metal to ensure the stability and load-bearing capacity of the structural connection, adapting to high-frequency vibration conditions in industrial scenarios; the inner area of ​​the mounting bracket 2 is provided with a measured part 1, and the measured part 1 maintains a preset installation gap with the mounting bracket 2, which is the proximity sensor 1. The monitoring space for 0 is reasonably reserved; the mounting bracket 2 is provided with an internal threaded hole that matches the short adapter 3, and the outer surface of the short adapter 3 is provided with a corresponding external thread structure. The short adapter 3 and the mounting bracket 2 are detachably fixedly connected by threaded connection, which is convenient for assembly and tight connection; the lower outer surface of the long adapter 5 is threaded into the internal threaded hole of the short adapter 3, and the extension length of the long adapter 5 can be adjusted by rotating along the axial direction of the short adapter 3. The lower outer surface of the long adapter 5 is also threaded with a locking square nut 4 for locking. The locking square nut 4 is a regular square structure, and its interior is provided with a thread that matches the external thread of the long adapter 5. The long adapter 5 has an internal threaded hole. After the long adapter 5 is adjusted to the target position, tighten the locking square nut 4 so that its end face fits tightly with the upper end face of the short adapter 3, thereby achieving axial positioning of the long adapter 5 and preventing it from loosening or shifting during equipment vibration. A connecting sleeve 6 is threadedly connected to the upper end of the long adapter 5. The internal thread of one end of the connecting sleeve 6 is precisely matched with the external thread of the upper end of the long adapter 5, ensuring the sealing and structural strength of the connection. A conduit adapter 9 is threadedly connected to the upper end of the connecting sleeve 6. The internal thread of the other end of the connecting sleeve 6 matches the external thread of the lower end of the conduit adapter 9, forming a modular connection channel. The connecting sleeve 6 and the conduit adapter 9 are connected to the conduit adapter 9. A bushing 7 is provided between the pipe adapters 9. The bushing 7 is made of wear-resistant material and serves as a buffer and positioning element. A sealing ring 8 is provided at the connection between the bushing 7 and the pipe adapter 9. The sealing ring 8 is made of elastic rubber material. Its inner layer is tightly fitted to the outer surface of the pipe adapter 9, and its outer ring is tightly fitted to the inner surface of the connecting sleeve 6, which effectively enhances the sealing performance of the connection and prevents external dust, moisture or oil from seeping into the interior. The end of the flexible conduit 11 is provided with an annular groove, and the inner wall of the bushing 7 is provided with a protrusion that matches the annular groove. The flexible conduit 11 and the bushing 7 are firmly fixed by the snap-fit ​​of the groove and the protrusion, which also facilitates disassembly and maintenance in the future.The lower end of the long adapter 5 has a positioning step inside, and the end of the proximity sensor 10 abuts against the positioning step. The proximity sensor 10 is fixed to the inner wall of the long adapter 5 by an interference fit or by a locking device to ensure the positional accuracy of the proximity sensor 10 after installation. The cable of the proximity sensor 10 extends along the internal channels of the long adapter 5, the connecting sleeve 6, and the conduit adapter 9 into the flexible conduit 11, which provides closed protection and guidance for the cable.

[0026] The installation process of this specific embodiment is as follows: First, according to the installation position of the part to be measured 1, fix the mounting bracket 2 to the external fixing component through the mounting holes or welding structure on the mounting bracket 2, ensuring that the design distance is maintained between the mounting bracket 2 and the part to be measured 1; Second, screw the short adapter 3 into the internal thread hole of the mounting bracket 2 through the external thread, and tighten it until the lower end face of the short adapter 3 is in close contact with the preset contact surface of the mounting bracket 2; Then, screw the locking square nut 4 onto the lower external thread of the long adapter 5, and then screw the lower end of the long adapter 5 into the internal thread hole of the short adapter 3. Rotate the long adapter 5 to adjust its extension length so that the distance between the mounting position of the proximity sensor 10 at the bottom of the long adapter 5 and the part to be measured 1 meets the monitoring requirements. After adjustment, tighten the locking square nut 4 to lock and fix the long adapter 5. Next, the end of the proximity sensor 10 is abutted against the positioning step inside the long adapter 5, and the proximity sensor 10 is fixed inside the long adapter 5 by interference fit or locking device. At the same time, the cable of the proximity sensor 10 is passed through the internal channel of the long adapter 5. Then, the lower end of the connecting sleeve 6 is screwed onto the external thread of the upper end of the long adapter 5 and tightened to a close fit. Then, the sealing ring 8 is placed on the outer side of the lower end of the conduit adapter 9, and the lower end of the conduit adapter 9 is screwed into the internal thread hole of the upper end of the connecting sleeve 6, so that the sealing ring 8 is pressed between the connecting sleeve 6 and the conduit adapter 9 to form a sealing structure. Finally, the annular groove at the end of the flexible conduit 11 is aligned with the protrusion on the inner wall of the bushing 7 and pressed firmly to achieve a snap-fit ​​fixation. At the same time, the cable of the proximity sensor 10 is pulled into the interior of the flexible conduit 11 to complete the assembly of the entire installation structure.

[0027] The working principle of this specific embodiment is as follows: Through the threaded engagement of the long adapter 5 and the short adapter 3, the distance between the proximity sensor 10 and the measured part 1 can be flexibly adjusted to accommodate dimensional errors and assembly deviations generated during equipment production and assembly. This ensures that the distance is always within the effective monitoring range of the proximity sensor 10, preventing signal capture failure due to excessive distance or collision damage to the proximity sensor 10 and the measured part 1 due to insufficient distance. The locking square nut 4 prevents the long adapter 5 from loosening or shifting under high-frequency vibration conditions, ensuring long-term stability of the distance. The flexible conduit 11 completely encloses the cable of the proximity sensor 10, effectively isolating... The flexible conduit 11 is designed to protect cables from external environmental interference such as dust, oil, and mechanical friction. Its flexibility allows it to adapt to minor displacements during equipment assembly and vibration, further protecting the cables from damage. The sealing ring 8 enhances the seal between the connecting sleeve 6 and the conduit adapter 9, preventing moisture and impurities from seeping into the interior and affecting component performance. The modular connection methods, such as threaded connections and slotted connections, not only improve assembly efficiency but also enhance compatibility with different models of proximity sensors 10. When replacing a sensor, simply loosen the locking nut 4 and unscrew the long adapter 5; there is no need to disassemble the overall mounting bracket 2, significantly simplifying maintenance procedures.

[0028] In the description of this utility model, it should be understood that the terms "coaxial", "bottom", "one end", "top", "middle", "other end", "upper", "side", "top", "inner", "front", "center", "both ends", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0029] In this utility model, unless otherwise explicitly specified and limited, the terms "installation", "setting", "connection", "fixing", "screw connection", etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal connection of two components or the interaction between two components. Unless otherwise explicitly limited, those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0030] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications may be made to this utility model without departing from its spirit and scope. All such changes and modifications fall within the scope of protection of this utility model as defined by the appended claims and their equivalents.

[0031] The control method of this utility model is to control the device by manually starting and stopping the switch. The wiring diagram of the power element and the supply of power are common knowledge in the field. Since this utility model is mainly used to protect mechanical devices, the control method and wiring layout will not be explained in detail.

Claims

1. A mounting structure for a proximity sensor, characterized in that: Includes mounting bracket (2), short adapter (3), locking square nut (4), long adapter (5), connecting sleeve (6), bushing (7), sealing ring (8), conduit adapter (9) and flexible conduit (11); The mounting bracket (2) is fixedly connected to an external fixing component; The mounting bracket (2) contains the part to be tested (1); The mounting bracket (2) is connected to a short adapter (3) by a thread; The lower outer surface of the long adapter (5) is threaded into the short adapter (3), and a locking square nut (4) for locking is threaded onto the lower outer surface of the long adapter (5). A connecting sleeve (6) is threadedly screwed into the upper end of the long adapter (5); The upper end of the connecting sleeve (6) is threaded with a conduit adapter (9); A bushing (7) is provided between the connecting sleeve (6) and the conduit adapter (9), and a sealing ring (8) is provided at the connection between the bushing (7) and the conduit adapter (9); The flexible conduit (11) is snapped onto the bushing (7); The lower end of the long adapter (5) is connected to a proximity sensor (10), and the cable of the proximity sensor (10) extends into a flexible conduit (11).

2. The mounting structure for a proximity sensor according to claim 1, characterized by: The mounting bracket (2) has an internal threaded hole that is compatible with the short adapter (3), and the outer surface of the short adapter (3) has a corresponding external threaded structure.

3. The mounting structure for a proximity sensor according to claim 1, characterized by: The connecting sleeve (6) has internal threads at both ends. One end is adapted to the upper external thread of the long adapter (5), and the other end is adapted to the lower external thread of the conduit adapter (9).

4. The mounting structure for a proximity sensor according to claim 1, characterized by: The sealing ring (8) is made of elastic rubber material, and the inner ring of the sealing ring (8) is tightly fitted with the outer surface of the conduit adapter (9), and the outer ring is tightly fitted with the inner surface of the connecting sleeve (6).

5. The mounting structure for a proximity sensor according to claim 1, characterized by: The end of the flexible conduit (11) is provided with an annular groove, and the inner wall of the bushing (7) is provided with a protrusion that matches the annular groove. The flexible conduit (11) and the bushing (7) are fixed by the engagement of the groove and the protrusion.

6. The mounting structure for a proximity sensor according to claim 1, characterized by: The lower end of the long adapter (5) is provided with a positioning step, the end of the proximity sensor (10) abuts against the positioning step, and the proximity sensor (10) is interference-fitted with the inner wall of the long adapter (5) or fixed by a locking component.

7. The mounting structure for a proximity sensor according to claim 1, characterized by: The locking square nut (4) has a regular square structure and an internal thread hole that matches the external thread of the long adapter (5).

8. The mounting structure for a proximity sensor according to claim 1, characterized by: The mounting bracket (2) is made of metal and has mounting holes or welding structures for connecting with external fixing components.

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