Vibration isolation mounting structure for sensor

Abstract

The utility model relates to the technical field of hydropower station equipment monitoring, concretely to vibration -proof buffer fixing structure of sensor, including base, mounting seat and a plurality of damping components, the top of base is equipped with spherical groove and is installed with apron, mounting seat is hemispherical structure, mounting seat is covered in spherical groove, the top of mounting seat is installed with the pressure rubber ring, a plurality of damping components evenly are embedded in the spherical groove ball surface groove bottom department, and damping component includes cover shell, bottom cover and the pole of pressing, and cover shell is filled with hydraulic oil. The vibration -proof buffer fixing structure of sensor, through the cooperation of hemispherical mounting seat and spherical groove, combine a plurality of evenly distributed damping components, can realize the buffer of multidirectional vibration, adapts to complex vibration scene, and its damping component adopts hydraulic oil and damping hole plate combined structure, utilizes the damping force that hydraulic oil flows through different through -hole produces, forms multistage attenuation to high -frequency vibration, promotes vibration energy absorption effect.

Description

Technical Field

[0001] This utility model relates to the field of hydropower station equipment monitoring technology, specifically to a vibration-damping and buffering fixing structure for sensors. Background Technology

[0002] In hydropower station operation, equipment condition monitoring relies on sensors to accurately collect data. Water flow impacts and mechanical operation can generate vibrations, affecting sensor stability. Vibration-damping and buffering structures provide an adaptive environment for the sensors, ensuring their continuous operation under complex conditions. These structures are crucial support for hydropower station equipment monitoring systems, contributing to the safe and stable operation of the equipment.

[0003] Utility model patent CN217766503U discloses a vibration-resistant and high-temperature-resistant current sensor base. This base includes a support base with vibration-damping blocks installed at the four corners of its lower surface. A limiting frame is installed above the support base, and the limiting frame has an internal mounting groove. A lifting rod is installed on both sides of the limiting frame, with limiting posts installed at the top and return springs connected to both sides below the limiting posts. An adjusting screw is installed in the middle of the lifting rod, with a positioning block connected to one side. This vibration-resistant and high-temperature-resistant current sensor base allows the positioning blocks to move closer or further apart via the adjusting screw, thus positioning the sensor and improving its installation stability. The return springs allow the lifting rod to move up and down, providing pressure and limitation above the sensor after installation, while also facilitating sensor loading and unloading.

[0004] The vibration-resistant and high-temperature resistant current sensor base uses a single elastic shock-absorbing column and a vibration-damping block for vibration reduction. It can only buffer vibrations in a specific direction and frequency, and it is difficult to cope with multi-dimensional composite vibrations. Therefore, we propose a vibration-resistant buffer fixing structure for the sensor. Utility Model Content

[0005] The purpose of this invention is to provide a vibration-damping and buffering fixing structure for sensors to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: The sensor's vibration damping and fixing structure includes: The base, serving as the fundamental fixing component of the sensor device, has a spherical groove at its top and a cover plate installed at its top. The mounting base, serving as a support platform for the sensor device, has a hemispherical structure and is fitted inside the spherical groove. A pressure-relief rubber ring is tightly bonded to the outer periphery of the top plane of the mounting base, and the bottom surface of the cover plate abuts against the pressure-relief rubber ring. A vibration damping assembly is provided, comprising multiple vibration damping assemblies evenly embedded at the bottom of the spherical groove. Each vibration damping assembly includes a hollow cylindrical shell, a bottom cover installed at the bottom end of the shell, and a push rod axially inserted into the shell and slidably connected to it. The shell is filled with hydraulic oil. A return spring is fitted on the top of the bottom cover. The bottom end of the push rod extends into the shell and is fixed with several damping orifice plates. The top end of the return spring abuts against the damping orifice plate located at the bottommost end, and the top end of the push rod abuts against the mounting base.

[0007] Preferably, a clearance hole is provided at the middle position of the cover plate, the inner diameter of the clearance hole is smaller than the inner diameter of the pressure ring, and the cross-section of the pressure ring is O-shaped; In this configuration, the clearance hole provides space for the top protrusion to extend, the pressure ring is pressed down by the cover plate to absorb some vibration, and the O-shaped cross section facilitates elastic deformation.

[0008] Preferably, the base has protruding edges on both the left and right sides of its bottom end, and the protruding edges are fixing components of the base; In this design, the raised edge increases the contact area between the base and the mounting surface, making it easier to secure with fasteners and improving overall installation stability.

[0009] Preferably, the top of the mounting base is provided with a top protrusion for mounting the sensor device, and the top protrusion extends outward from the clearance hole; In this configuration, the top protrusion provides a mounting position for the sensor, and its extension from the clearance hole prevents the cover plate from interfering with the sensor installation.

[0010] Preferably, the bottom of the spherical groove is evenly provided with a plurality of mounting holes for installing the vibration damping component, the vibration damping component is embedded in the mounting holes, and the bottom surface of the mounting base is provided with a plurality of abutment holes corresponding to the positions of the mounting holes. The abutment holes are countersunk holes, and the top end of the abutment rod extends into the abutment hole and abuts against the bottom of the abutment hole. In this design, the mounting holes facilitate the positioning and installation of the vibration damping components, the abutment holes and abutment rods work together to effectively transmit vibrations to the vibration damping components, and the countersunk hole structure helps to limit the position of the top of the abutment rod.

[0011] Preferably, the bottom end of the housing is open, and the top end of the bottom cover is provided with a threaded post with a threaded outer peripheral surface. The threaded post is threadedly connected to the bottom end of the housing, and a cavity for placing the return spring is provided on the top surface of the threaded post. In this design, the threaded connection facilitates the assembly and disassembly of the housing and the bottom cover, while the recessed cavity provides positioning space for the return spring, ensuring its stable operation.

[0012] Preferably, a fixing post is provided on the top inner wall of the casing, and a sliding hole with an axial through shape is provided in the fixing post. A sealing ring is embedded in the wall of the sliding hole, and the push rod passes through the sliding hole and is slidably connected to the fixing post. The sealing ring plays a sealing role between the fixing post and the push rod. In this configuration, the sliding hole of the fixed column provides guidance for the abutment rod, and the sealing ring prevents hydraulic oil leakage inside the housing, ensuring the hydraulic buffering effect.

[0013] Preferably, the surface of the damping orifice plate is provided with a plurality of through holes, the through holes vertically penetrating the damping orifice plate, and the positions of the through holes on two adjacent damping orifice plates are staggered in the vertical direction; In this setting, the through holes allow hydraulic oil to flow through, and the staggered through holes of adjacent orifice plates can increase the flow resistance of hydraulic oil and improve the absorption effect of vibration energy.

[0014] Compared with the prior art, the beneficial effects of this utility model are: 1. The vibration damping and fixing structure of this sensor, through the cooperation of a hemispherical mounting base and a spherical groove, combined with multiple evenly distributed vibration damping components, can achieve multi-directional vibration damping and adapt to complex vibration scenarios. 2. The vibration damping and fixing structure of the sensor adopts a combination structure of hydraulic oil and damping orifice plate. The damping force generated by the hydraulic oil flowing through different through holes forms multi-level attenuation of high-frequency vibration and improves the vibration energy absorption effect. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is an exploded view of the overall structure of this utility model; Figure 3 This is an exploded view of the base in this utility model; Figure 4 This is a schematic diagram of the mounting base in this utility model; Figure 5 This is an exploded view of the vibration damping component in this utility model; Figure 6 This is a cross-sectional view of the vibration damping component in this utility model; The meanings of the labels in the diagram are as follows: 100. Base; 110. Spherical groove; 111. Mounting hole; 120. Cover plate; 121. Clearance hole; 130. Raised edge; 200. Mounting base; 210. Abutment hole; 220. Top protrusion; 230. Pressure ring; 300. Vibration damping assembly; 310. Housing; 311. Fixing post; 312. Sealing ring; 320. Bottom cover; 321. Threaded post; 322. Cavity; 323. Return spring; 330. Push rod; 331. Damping orifice plate; 332. Through hole; 400. Sensor equipment. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. 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.

[0017] Please see Figures 1-6 The sensor's vibration damping and fixing structure includes a base 100 as the basic fixing component of the sensor device 400, a mounting base 200 as the supporting platform for the sensor device 400, and multiple vibration damping components 300. The vibration damping components 300 are installed between the base 100 and the mounting base 200 and serve as vibration damping and buffering components. The top of the mounting base 200 has a top protrusion 220 for mounting the sensor device 400. The top protrusion 220 is made of aluminum alloy, combining lightweight and structural strength, and can stably support the sensor device 400. The left and right edges of the bottom of the base 100 are both provided with protruding edges 130, which are fixing components of the base 100. Bolt holes can be opened on the protruding edges 130 to fix the base 100 to the designated position of the hydropower station equipment with bolts, enhancing the installation stability of the overall structure.

[0018] like Figure 2 and Figure 3 As shown, in this utility model, a spherical groove 110 is provided at the top of the base 100. A plurality of mounting holes 111 for mounting vibration damping components 300 are evenly provided at the bottom of the spherical groove 110. The vibration damping components 300 are embedded in the mounting holes 111, so that the plurality of vibration damping components 300 are evenly embedded at the bottom of the spherical groove 110. The mounting seat 200 has a hemispherical structure and is fitted inside the spherical groove 110. The cooperation between the hemispherical mounting seat 200 and the spherical groove 110 allows the mounting seat 200 to rotate slightly in multiple directions within the spherical groove 110, providing a structural basis for coping with multi-dimensional vibrations.

[0019] like Figures 1-4As shown, specifically, a cover plate 120 is installed at the top of the base 100. The cover plate 120 is made of stainless steel, which has good corrosion resistance and structural strength, and can effectively protect the internal structure. A pressure-resistant rubber ring 230 is tightly bonded to the outer periphery of the top plane of the mounting base 200. The pressure-resistant rubber ring 230 is made of nitrile rubber, which has good elasticity and oil resistance. A clearance hole 121 is opened in the middle of the cover plate 120, and a top protrusion 220 extends outward from the clearance hole 121. The inner diameter of the clearance hole 121 is smaller than the inner diameter of the pressure-resistant rubber ring 230, so that the bottom surface of the cover plate 120 abuts against the pressure-resistant rubber ring 230. The pressure-resistant rubber ring 230 is clamped by the cover plate 120 and the mounting base 200, and can undergo elastic deformation when the mounting base 200 vibrates, absorbing some vibration energy, and at the same time, it provides a certain constraint on the mounting base 200 to prevent it from shaking excessively. The cross-section of the pressure-resistant rubber ring 230 is O-shaped.

[0020] like Figure 5 and Figure 6 As shown, the vibration damping assembly 300 further includes a hollow cylindrical housing 310, a bottom cover 320 installed at the bottom end of the housing 310, and a stop rod 330 axially inserted into and slidably connected to the housing 310. Both the housing 310 and the bottom cover 320 are made of brass, providing good sealing and processing performance. The stop rod 330 is made of high-strength steel, capable of withstanding significant impact forces. The housing 310 is filled with hydraulic oil, specifically anti-wear hydraulic oil with a viscosity grade of 46, providing good lubrication and stability. The bottom end of the stop rod 330 extends into the housing 310 and is fixed with several damping orifice plates 331, which are made of alloy steel and have a robust structure. Several through holes 332 are formed on the surface of the damping orifice plate 331. The through holes 332 penetrate the damping orifice plate 331 vertically. The positions of the through holes 332 on two adjacent damping orifice plates 331 are staggered in the vertical direction. When the push rod 330 drives the damping orifice plate 331 to slide in the sleeve 310, the hydraulic oil needs to pass through the staggered through holes 332 to generate damping force, forming multi-stage attenuation of high-frequency vibration and improving the vibration energy absorption effect.

[0021] like Figure 5 and Figure 6As shown, the bottom of the housing 310 is open, and the top of the bottom cover 320 has a threaded post 321 with a threaded outer surface. A sealing ring made of nitrile rubber is provided between the housing 310 and the bottom cover 320. The threaded post 321 is threaded to the bottom of the housing 310. The threaded connection facilitates the disassembly and assembly of the housing 310 and the bottom cover 320, making it convenient to replace and maintain the internal hydraulic oil and components. The sealing ring further enhances the sealing performance of the connection between the two, preventing hydraulic oil leakage. A return spring 323 is fitted on the top of the bottom cover 320. The return spring 323 is made of spring steel and has good elastic recovery performance. A cavity 322 for placing a return spring 323 is provided on the top surface of the threaded column 321. The top of the return spring 323 abuts against the damping orifice plate 331 located at the bottom. The return spring 323 can push the damping orifice plate 331 and the damping rod 330 to reset after the abutment rod 330 is subjected to pressure and moves down, ensuring the continuous working capability of the vibration damping assembly 300.

[0022] like Figure 3 and Figure 4 As shown, it is worth noting that the bottom surface of the mounting base 200 is provided with several abutment holes 210 corresponding to the positions of the mounting holes 111. The abutment holes 210 are countersunk holes. The top end of the abutment rod 330 extends into the abutment hole 210 and abuts against the bottom of the abutment hole 210, so that the top end of the abutment rod 330 abuts against the mounting base 200. The cooperation between the abutment rod 330 and the abutment hole 210 can transmit the vibration received by the mounting base 200 to the vibration damping component 300. At the same time, the abutment hole 210 constrains the top end of the abutment rod 330, ensuring the effective transmission of force.

[0023] like Figure 5 and Figure 6 As shown, it is worth noting that a fixing post 311 is provided on the top inner wall of the housing 310. The fixing post 311 and the housing 310 are integrally formed, resulting in a stable structure. The fixing post 311 has an axially through sliding hole, and a sealing ring 312 is embedded in the wall of this hole. The sealing ring 312 is made of fluororubber, which has excellent oil resistance and high-temperature resistance. The push rod 330 passes through the sliding hole and is slidably connected to the fixing post 311. The sealing ring 312 acts as a seal between the fixing post 311 and the push rod 330, preventing hydraulic oil leakage inside the housing 310 and ensuring the normal operation of the hydraulic buffer function.

[0024] In this embodiment, the vibration damping and fixing structure of the sensor is first fixed to a suitable position on the hydropower station equipment by the protruding edge 130 at the bottom of the base 100. Then, the sensor device 400 is installed on the top protrusion 220 of the mounting base 200, completing the assembly of the structure. Then, when the equipment vibrates, the vibration is transmitted to the mounting base 200. The hemispherical mounting base 200 generates multi-directional slight shaking within the spherical groove 110. The abutment hole 210 at the bottom of the mounting base 200... The push rod 330 is pushed down; then, the push rod 330 drives the damping orifice plate 331 to move within the housing 310. Hydraulic oil passes through the through hole 332 on the damping orifice plate 331 to generate damping force, absorbing vibration energy. At the same time, the return spring 323 is compressed. Finally, after the vibration weakens, the return spring 323 pushes the damping orifice plate 331 and the push rod 330 back to their original positions, and the mounting base 200 also returns to its initial position. Throughout the process, the pressure rubber ring 230 also absorbs some vibration energy through elastic deformation.

[0025] 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 preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A vibration-damping and buffering fixing structure for a sensor, characterized in that, include: The base (100) serves as the basic fixing component of the sensor device (400). A spherical groove (110) is provided at the top of the base (100), and a cover plate (120) is installed at the top of the base (100). Mounting base (200), serving as a support platform for the sensor device (400), has a hemispherical structure and is fitted inside the spherical groove (110). A pressure-resistant rubber ring (230) is tightly bonded to the outer periphery of the top plane of the mounting base (200), and the bottom surface of the cover plate (120) abuts against the pressure-resistant rubber ring (230). A vibration damping assembly (300) is provided, wherein there are multiple vibration damping assemblies (300), and several vibration damping assemblies (300) are evenly embedded at the bottom of the spherical groove (110). Each vibration damping assembly (300) includes a housing (310) with a hollow cylindrical structure, a bottom cover (320) installed at the bottom end of the housing (310), and a stop rod that is axially inserted into the housing (310) and slidably connected to the housing (310). (330) The housing (310) is filled with hydraulic oil. The top of the bottom cover (320) is fitted with a return spring (323). The bottom end of the push rod (330) extends into the housing (310) and is fixed with several damping orifice plates (331). The top end of the return spring (323) abuts against the damping orifice plate (331) located at the bottommost end. The top end of the push rod (330) abuts against the mounting base (200).

2. The vibration damping and fixing structure for the sensor according to claim 1, characterized in that: An air-proof hole (121) is provided at the middle position of the cover plate (120). The inner diameter of the air-proof hole (121) is smaller than the inner diameter of the pressure ring (230). The cross-section of the pressure ring (230) is O-shaped.

3. The vibration damping and fixing structure for the sensor according to claim 1, characterized in that: The base (100) has protruding edges (130) on both the left and right sides of its bottom end. The protruding edges (130) are fixed components of the base (100).

4. The vibration damping and fixing structure for the sensor according to claim 2, characterized in that: The top of the mounting base (200) is provided with a top protrusion (220) for mounting the sensor device (400), and the top protrusion (220) extends outward from the vent hole (121).

5. The vibration damping and fixing structure for the sensor according to claim 1, characterized in that: The bottom of the spherical groove (110) is evenly provided with a plurality of mounting holes (111) for installing the vibration damping component (300). The vibration damping component (300) is embedded in the mounting holes (111). The bottom surface of the mounting base (200) is provided with a plurality of abutment holes (210) corresponding to the positions of the mounting holes (111). The abutment holes (210) are countersunk holes. The top end of the abutment rod (330) extends into the abutment hole (210) and abuts against the bottom of the abutment hole (210).

6. The vibration damping and fixing structure for the sensor according to claim 1, characterized in that: The bottom end of the casing (310) is open, and the top end of the bottom cover (320) is provided with a threaded post (321) with a threaded outer surface. The threaded post (321) is threadedly connected to the bottom end of the casing (310), and a cavity (322) for placing the return spring (323) is provided on the top surface of the threaded post (321).

7. The vibration damping and fixing structure for the sensor according to claim 1, characterized in that: The top inner wall of the casing (310) is provided with a fixing post (311), and the fixing post (311) is provided with an axially through sliding hole. A sealing ring (312) is embedded in the wall of the sliding hole. The push rod (330) passes through the sliding hole and is slidably connected to the fixing post (311). The sealing ring (312) plays a sealing role between the fixing post (311) and the push rod (330).

8. The vibration damping and fixing structure for the sensor according to claim 1, characterized in that: The damping orifice plate (331) has several through holes (332) on its surface. The through holes (332) penetrate the damping orifice plate (331) vertically. The positions of the through holes (332) on two adjacent damping orifice plates (331) are staggered in the vertical direction.

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