Multi-direction vibration sensor magnetic attraction positioning base suitable for curved surface structure

Abstract

The utility model relates to a multi-direction vibration sensor magnetic attraction positioning base suitable for a curved surface structure, comprising a magnetic attraction part arranged below a main body, a groove arranged on the lower surface of the magnetic attraction part and used for attracting the main body on the curved surface of a monitored rotating machine, the groove being of an axial symmetry structure, and the magnetic attraction part being provided with a magnetic attraction groove. The axis is parallel to the axis of the curved surface of the monitored rotating machine; and the connecting part is arranged on the mounting surface and is used for mounting a vibration sensor in a corresponding direction. According to the multi-direction vibration sensor magnetic attraction positioning base suitable for the curved surface structure, the groove is formed in the lower surface of the magnetic attraction part, so that on one hand, adsorption force is enhanced, and monitoring data failure caused by falling of the vibration sensor is avoided; and on the other hand, the groove can be in positioning clamping connection with the curved surface of the monitored rotating machine, it is guaranteed that the axis of the groove basically coincides with a monitoring point on the monitored rotating machine, monitoring data on each installation face has comparability, multi-direction vibration monitoring is achieved, and installation is more convenient.

Description

Technical Field

[0001] The utility model relates to the field of positioning bases, in particular to a magnetic positioning base for a multi-directional vibration sensor suitable for a curved surface structure. Background Art

[0002] Vibration monitoring of rotating machinery is a necessary means to ensure safe and stable operation of rotating machinery. In order to evaluate the operating status of the rotating machinery and perform fault diagnosis through monitoring data, the vibration sensor is fixed on the surface of the rotating machinery through a matching positioning base to implement vibration monitoring. To ensure the accuracy of vibration monitoring, the positioning base on the surface of the rotating machinery must not shake during the monitoring process.

[0003] When monitoring the vibration of the curved surface structure of the turntable, since the bottom of the traditional positioning base is designed to be flat, the positioning base will shake when it is adsorbed on the surface of the curved structure, affecting the accuracy of vibration monitoring; in the prior art, even if there is a vibration sensor base that can be installed on the curved surface of the turntable, it can generally only perform single-direction vibration monitoring, and the single-direction monitoring data cannot fully reflect the vibration conditions of the turntable.

[0004] Based on this, it is necessary to design a magnetic positioning base for a multi-directional vibration sensor suitable for curved surface structures. Utility Model Content

[0005] The technical problem to be solved by the utility model is to overcome the defects in the prior art that the traditional positioning base is not suitable for vibration monitoring of the curved surface structure of the rotating machine and can only perform single-direction monitoring, thereby providing a multi-directional vibration sensor magnetic positioning base suitable for the curved surface structure.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A magnetic positioning base for a multi-directional vibration sensor suitable for a curved surface structure comprises: a main body, which is a cube structure and has mounting surfaces in multiple directions; a magnetic component, which is arranged below the main body, and a groove is arranged on the lower surface of the magnetic component, which is used to adsorb the main body on the curved surface of a monitored rotating machine, and the groove is an axisymmetric structure, and its axis is parallel to the axis of the monitored rotating machine curved surface; and also includes a connecting portion arranged on the mounting surface, which is used to fix and install the vibration sensor in the corresponding direction.

[0008] Preferably, the magnetic attraction component is made of a strong magnetic material, and the main body is made of copper or stainless steel.

[0009] Preferably, one of the lower surface of the main body and the upper surface of the magnetic component is provided with a card block, and the other is provided with a card slot, the shape of the card block corresponds to the shape of the card slot, the card block is engaged with the card slot to connect the main body and the magnetic component into one, and the card slot is a wedge groove, a dovetail groove or an I-shaped groove; or, the lower surface of the main body and the upper surface of the magnetic component are fixed by bonding with metal glue.

[0010] Preferably, the side length of the main body is 3-4 cm.

[0011] Preferably, the length and width of the upper surface of the magnetic attraction component are both equal to the side length of the main body, and the height of the magnetic attraction component is 1 / 6 of the side length of the main body.

[0012] Preferably, the magnetic attraction component includes feet located on both sides of the groove, the two feet are symmetrical about the axis, and the width of the feet is 1 / 10 of the side length of the main body.

[0013] Preferably, inclined surfaces are respectively arranged at the connection points between the two feet and the groove, and the two inclined surfaces are symmetrical about the axis and arranged opposite to each other.

[0014] Preferably, the groove is a curved groove extending in the axial direction, the curved top of the groove is tangent to a plane extending downward from the lower surface of the main body, and the height difference between the plane and the lower surface of the main body is 1.5-3 mm.

[0015] Preferably, the connecting portion is a threaded hole, and a threaded hole is respectively provided on the upper surface of the main body and the center of the four side surfaces, and the vibration sensor is threadedly connected to the threaded hole; or, the connecting portion is a socket, and a socket is respectively provided on the upper surface of the main body and the center of the four side surfaces, and the vibration sensor is plugged into and fixed to the socket.

[0016] Preferably, the depth of the threaded hole is 1 / 3-1 / 4 of the side length of the main body; the inner diameter of the threaded hole is 1 / 5 of the side length of the main body.

[0017] Compared with the prior art, the beneficial effects of the present invention are:

[0018] The utility model is a multi-directional vibration sensor magnetic positioning base suitable for curved surface structures. A magnetic attraction component is arranged below the main body, and a groove is arranged on the lower surface of the magnetic attraction component. The function of the groove is, on the one hand, to enable the magnetic attraction component to cover the curved surface of the monitored rotor as much as possible, thereby increasing the contact area between the magnetic attraction component and the curved surface structure of the rotor and shortening the distance between the two, thereby making the magnetic attraction stronger. In some cases, the groove fits well with the curved surface of the monitored rotor, which can achieve a maximized magnetic positioning effect, avoid the vibration sensor on the main body vibrating relative to the monitored rotor or the entire base falling off from the monitored rotor, resulting in monitoring failure, and the base and the vibration sensor thereon are prevented from vibrating relative to the monitored rotor or falling off from the monitored rotor. The sensor can be fixed on the curved surface of the monitored rotating machine without shaking, ensuring the accuracy of vibration monitoring; on the other hand, the groove can also be positioned and connected with the curved surface of the monitored rotating machine to ensure that the axis of the groove basically coincides with the monitoring point on the monitored rotating machine. Based on the axisymmetric groove structure and the main structure of the cube, the monitoring distance from the monitoring point to the vibration sensor in each direction of the main body is basically the same or has only negligible errors, thereby realizing multi-directional vibration monitoring of the monitored rotating machine at the same time. The vibration data obtained by the vibration sensor on each installation surface is comparable, and the monitoring results will not be affected by the error of the monitoring distance. The monitoring data can fully reflect the vibration of the rotating machine. And multi-directional vibration data can be monitored simultaneously with one installation, which is more convenient to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0020] Figure 1 This is a structural schematic diagram of a magnetic positioning base for a multi-directional vibration sensor suitable for a curved surface structure according to the first embodiment of the utility model.

[0021] Figure 2 It is a left view of the magnetic attraction positioning base of the multi-directional vibration sensor suitable for curved surface structure according to the first embodiment of the utility model.

[0022] Figure 3 This is a cross-sectional view of the magnetic attraction positioning base of the multi-directional vibration sensor suitable for curved surface structure according to the first embodiment of the utility model based on the upper section AA of the left view.

[0023] Figure 4 This is a structural schematic diagram of a magnetic positioning base of a multi-directional vibration sensor suitable for curved surface structures according to the second embodiment of the utility model.

[0024] Figure 5 This is a schematic diagram of the specific structure of the magnetic attraction component of the magnetic attraction positioning base body of the multi-directional vibration sensor suitable for curved surface structure according to the third embodiment of the utility model.

[0025] Description of reference numerals:

[0026] 1. Main body; 11. Card slot; 12. Mounting surface; 2. Magnetic component; 21. Groove; 22. Foot; 23. Inclined surface; 24. Card block; 3. Connecting part. DETAILED DESCRIPTION

[0027] The technical solution of the utility model will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0028] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0029] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0030] As attached Figure 1 To Attachment Figure 5 As shown, the embodiment of the utility model provides a multi-directional vibration sensor magnetic positioning base suitable for curved surface structures, including a main body 1, a magnetic component 2 and a connecting portion 3, wherein the main body 1 is a cubic structure, having mounting surfaces 12 in multiple directions; the magnetic component 2 is arranged below the main body 1, and is used to adsorb the main body 1 on the curved surface of the monitored rotating machine, and a groove 21 is arranged on the lower surface of the magnetic component 2, and the groove 21 is an axisymmetric structure, and its axis is parallel to the axis of the monitored rotating machine curved surface, as shown in the attached Figure 1 and attached Figure 2 The dotted line direction is the axial direction of the groove 21, and the cross-sectional contour line of the groove 21 can be an arc line, an arch line or a curve; the connecting portion 3 is located on the mounting surface 12, and is used to fix and install the vibration sensor in the corresponding direction.

[0031] In this embodiment, the shape of the main body 1 is set to a cube, and the connecting part 3 is set at the center of each mounting surface 12. The purpose is that, on the one hand, multi-directional monitoring needs to include at least three directions perpendicular to each other. Therefore, the four sides and one upper surface of the cube are used as mounting surfaces 12, so as to ensure that the vibration sensor can monitor the vibration data in the three directions perpendicular to each other, namely, the horizontal lateral direction, the horizontal longitudinal direction and the vertical direction; on the other hand, the distances between the vibration sensors on the four sides of the main body 1 and the monitoring points are basically the same, and due to the small volume of the main body 1, the difference between the distance from the vibration sensor on the upper surface to the monitoring point and the distance from the vibration sensor on the side surface to the monitoring point is within the allowable error range. Therefore, the monitoring data obtained simultaneously by the vibration sensors in five directions on the main body 1 are comparable, and the vibration conditions of the transfer machine can be more comprehensively understood through the analysis of vibration values ​​in different directions; if the shape of the main body 1 is set to a cuboid with long and short sides, the distances between the vibration sensors on the side of the main body 1 and the monitoring points will be inconsistent, and the vibration data deviation caused by the distance deviation cannot be ruled out, so the vibration values ​​measured are not comparable.

[0032] When performing vibration monitoring on a monitored rotating machine, such as a bearing, since the bearing has a shell on the outside, the staff will select a monitoring point on the curved surface of the shell that is closest to the bearing, and then fix the base on the monitoring point; specifically, align the groove 21 of the magnetic component 2 with the monitoring point so that the center of the monitoring point basically coincides with the axis of the groove 21, thereby aligning the axis of the groove 21 with the axis of the curved surface of the monitored rotating machine, thereby ensuring that the vibration sensor on the main body 1 can be as close to the monitoring point as possible, close to the monitored rotating machine; the groove 21 on the lower surface of the magnetic component 2 allows the magnetic component 2 to It can cover as much of the curved surface of the monitored rotary machine as possible, increase the contact area between the magnetic suction component 2 and the curved surface structure of the rotary machine, and shorten the distance between the two, so that the magnetic suction effect is stronger; in some cases, the inner concave surface of the groove 21 fits the curved surface of the monitored rotary machine, which can achieve the maximum magnetic suction positioning effect, avoid the vibration sensor on the main body 1 vibrating relative to the monitored rotary machine or the entire base falling off the monitored rotary machine, resulting in monitoring failure, and the base and the vibration sensor thereon can be fixed on the curved surface structure surface of the monitored rotary machine without shaking, ensuring the accuracy of vibration monitoring. On the other hand, the groove 21 can also be positioned and clamped with the curved surface of the monitored rotary machine to ensure that the axis of the groove 21 is basically coincident with the monitoring point on the monitored rotary machine, and then based on the axially symmetrical groove 21 structure and the cube main body 1 structure, the monitoring distance from the monitoring point to the vibration sensor in each direction of the main body 1 is basically the same or has only a negligible error, thereby realizing multi-directional vibration monitoring of the monitored rotary machine at the same time.

[0033] In this embodiment, the main body 1 is made of copper or stainless steel, and the magnetic component 2 is made of a strong magnetic material. The magnetic component 2 is made of a strong magnetic material as a whole, which can ensure that the magnetic component 2 has a strong adsorption force, so that the main body 1 can be firmly adsorbed on the surface of the rotating machine during vibration monitoring, so as to prevent the vibration sensor from shaking due to the vibration of the rotating machine, causing the distance between the vibration sensor and the monitoring point to change, affecting the accuracy of vibration monitoring; since copper or stainless steel materials are durable and not easy to corrode, the use of copper or stainless steel materials to make the main body 1 can prevent the main body 1 from being corroded in a harsh working environment, especially the connection with the vibration sensor, which will not be loosened due to corrosion damage at the connection, thereby causing the monitoring data to fail; it can ensure the service life of the base, without frequent maintenance and replacement, saving costs, and at the same time ensure the long-term stable installation of the vibration sensor, ensuring long-term accurate monitoring.

[0034] As attached Figure 1As shown, in this embodiment, the lower surface of the main body 1 and the upper surface of the magnetic component 2 are fixed by metal glue. Metal glue bonding refers to bonding the lower surface of the main body 1 and the upper surface of the magnetic component 2 together with a metal adhesive glue with strong viscosity and high firmness. Snap-fitting or metal glue bonding can tightly connect the main body 1 and the magnetic component 2 as a whole, avoiding the relative movement of the main body 1 and the magnetic component 2 due to loose connection during monitoring, resulting in changes in the distance between the vibration sensor and the monitoring point, affecting the accuracy of vibration monitoring.

[0035] In addition, in the second embodiment, the lower surface of the main body 1 and the upper surface of the magnetic component 2 can be connected and fixed by a clamping block 24 and a clamping slot 11. The connection between the clamping block 24 and the clamping slot 11 means that one of the lower surface of the main body 1 and the upper surface of the magnetic component 2 is provided with a clamping block 24, and the other is provided with a clamping slot 11; Figure 4 In the specific example shown, the card slot 11 is arranged on the lower surface of the main body 1, and the card block 24 is arranged on the upper surface of the magnetic attraction component 2. The shape of the card block 24 corresponds to the shape of the card slot 11. The card block 24 is engaged with the card slot 11 to connect the main body 1 and the magnetic attraction component 2 into one body. The card slot 11 can be a wedge-shaped slot, a dovetail slot or an I-shaped slot. Of course, in other embodiments, the positions of the card block 24 and the card slot 11 can be interchangeable.

[0036] In the attached Figure 4 In the second embodiment shown, the main body 1 and the magnetic component 2 are detachably connected. Since the monitored rotating machine has various curved surface radii, in order to improve the adsorption force and installation stability of the base on curved surfaces of different radii, the magnetic component 2 with a groove 21 adapted to the curved surface can be replaced to achieve a modular combination, so that the base types are more diverse and each base can be firmly adsorbed on the curved surface of the monitored rotating machine to ensure the accuracy of the monitoring data.

[0037] As attached Figure 1 As shown, the side length of the main body 1 of this embodiment ranges from 3 to 4 cm, which ensures that the vibration sensor can be stably mounted on the main body 1 and the weight of the main body 1 is controlled within a reasonable range, thereby ensuring that the base can be stably mounted on the curved surface of the monitored rotary machine. Generally, the length of the vibration sensor is about 1 cm. If the side length of the main body 1 is less than 3 cm, the vibration sensors on multiple sides may interfere with each other and cannot be mounted on the main body 1. The main body 1 is made of copper or stainless steel, which has a high density. If the side length of the main body 1 is greater than 4 cm, the volume of the main body 1 will be large, and the weight of the base will be too large. Since the monitored rotary machine is always in a vibrating state, the heavy base will have a large inertia and is easily dropped due to the vibration of the monitored rotary machine, resulting in failure of vibration monitoring. The detached base and the vibration sensor thereon are also easily damaged and cannot be used.

[0038] Preferably, the side length of the main body 1 in this embodiment is 3 cm, and the volume and weight meet the installation requirements.

[0039] As attached Figure 1 and attached Figure 2 As shown, in the present embodiment, the length and width of the upper surface of the magnetic component 2 are both the side length of the main body 1, that is, the upper surface of the magnetic component 2 is a square surface, which facilitates the alignment and fixation of the magnetic component 2 and the main body 1, so that the center of the main body 1 is basically coincident with the axis of the groove 21 of the magnetic component 2, ensuring that the distances from the vibration sensors on each mounting surface 12 of the main body 1 to the monitoring point are basically the same or within the allowable error range; on the other hand, for the embodiment in which the lower surface of the main body 1 and the upper surface of the magnetic component 2 are fixed by metal glue, the length and width of the upper surface of the magnetic component 2 are both the side length of the main body 1, which can also increase the contact area between the main body 1 and the magnetic component 2, and the lower surface of the main body 1 and the upper surface of the magnetic component 2 can be completely fitted together, ensuring the stability of the connection between the main body 1 and the magnetic component 2.

[0040] As attached Figure 3 As shown, the height H of the magnetic component 2 is 1 / 6 of the side length of the main body 1. This setting is to ensure that the groove 21 has a certain coverage depth, increase the contact area between the groove 21 and the curved surface of the monitored rotary machine, and reduce the distance between the two, thereby improving the adsorption strength of the magnetic component 2. In this embodiment, the side length of the main body 1 is 3 cm, and the height of the magnetic component 2 is 0.5 cm. Since the magnetic component 2 is made of magnetic material, if its height is large, the weight of the magnetic component 2 will also be large, resulting in a large overall inertia of the base. On the other hand, if the height of the magnetic component 2 is large, the center of gravity of the entire base is too high, and it is also easy to cause the base to detach due to the vibration of the monitored rotary machine; if the height of the magnetic component 2 is too small, the depth of the groove 21 on it cannot be guaranteed, which leads to insufficient adsorption strength between the base and the monitored rotary machine, and it is also easy to cause the base to fall off the surface of the monitored rotary machine.

[0041] As attached Figure 3 As shown, the groove 21 of this embodiment is a curved groove extending axially to better fit the curved surface of the rotary machine. In this embodiment, the top of the curved surface of the groove 21 is tangent to the plane extending downward from the lower surface of the main body 1, and the height difference h between the plane and the lower surface of the main body 1 is 1.5-3mm, which is used to prevent the base from falling off from the surface of the monitored rotary machine, resulting in invalid monitoring data and damage to the base and vibration sensor. If the height difference h between the plane and the lower surface of the main body 1 is less than 1.5mm, the overall volume and weight of the magnetic suction component 2 are too small, and the adsorption strength between the base and the curved surface of the monitored rotary machine is too small, and it is easy to fall from the surface of the monitored rotary machine; if the height difference h between the plane and the lower surface of the main body 1 is greater than 3mm, the volume and weight of the magnetic suction component 2 will be too large, resulting in a large overall inertia of the base, and the base will be greatly affected by the vibration of the monitored rotary machine, and it is also easy to fall from the surface of the monitored rotary machine.

[0042] For example, the side length of the main body 1 is 3 cm, the height of the magnetic component 2 is 1 / 6 of the side length of the main body 1, that is, 5 mm, the height difference h between the plane and the lower surface of the main body 1 is 2 mm, which is in the range of 1.5-3 mm, and the coverage depth of the groove 21 is 3 mm, which meets the installation requirements. The magnetic component 2 can be stably and shakenly adsorbed on the surface of the turntable.

[0043] As attached Figure 3 As shown, the magnetic component 2 includes feet 22 located on both sides of the groove 21, the feet 22 are symmetrical about the axis of the groove 21, and the width w of the feet 22 is 1 / 10 of the side length of the main body 1. Since the lower surface of the magnetic component 2 has a groove 21, the groove 21 of this embodiment is an arched groove, and the arch of the groove 21 is tangent to the plane extending downward from the lower surface of the main body 1. Therefore, the lower edge of the groove 21 is very thin. If the feet 22 are not provided on both sides of the groove 21, the lower edge of the groove 21 is easy to break, resulting in damage to the area of ​​the groove 21, affecting the stability of the base installed on the monitored transfer machine; and controlling the width w of the feet 22 to 1 / 10 of the side length of the main body 1 can improve the structural strength of the magnetic component 2, avoid the lower edge of the groove 21 from breaking, extend the service life of the magnetic component 2, and improve the stability of the base and the monitored transfer machine. In addition, when the base is not monitored, it can be stably placed on the ground or desktop through the feet 22, so that the vibration sensor can be easily installed on each installation surface 12 of the main body 1 on the magnetic component 2.

[0044] In this embodiment, the side length of the main body 1 is 3 cm, the width w of the foot 22 is 1 / 10 of the side length of the main body 1, that is, 3 mm, the total width of the foot 22 on both sides is 6 mm, and the width of the groove 21 is 24 mm.

[0045] As attached Figure 5 In the third embodiment shown, the difference from the above embodiments is that an inclined surface 23 is provided at the connection between the feet 22 on both sides of the magnetic attraction component 2 and the groove 21, and the two inclined surfaces 23 are symmetrical about the axis of the groove 21 and are arranged opposite to each other. When the inner concave surface of the groove 21 cannot completely fit with the curved surface of the monitored rotary machine, as a preferred method, an inclined surface 23 can be provided at the connection between the feet 22 on both sides of the magnetic attraction component 2 and the groove 21, so that the width of the open end of the groove 21 is larger, and the groove 21 can cover more of the curved surface of the monitored rotary machine, which increases the contact area between the groove 21 and the curved surface on the one hand, and brings the magnetic attraction component 2 and the rotary machine curved surface closer on the other hand, thereby enhancing the magnetic attraction effect and preventing the base from falling off the curved surface structure surface of the rotary machine due to loose adsorption, thereby causing damage to the base and the vibration sensor.

[0046] As attached Figure 1As shown, in this embodiment, the connection part 3 is a threaded hole, and a threaded hole is respectively provided on the upper surface of the main body 1 and the center of the four sides, and the vibration sensor is threadedly connected to the threaded hole; in other embodiments, the connection part 3 can also be a socket, and a socket is respectively provided on the upper surface of the main body 1 and the center of the four sides, and the vibration sensor is plugged and fixed to the socket. When carrying out vibration monitoring of the rotating machine surface, it is not only required that the vibration sensor can be installed quickly and conveniently, but also that there is no relative movement and shaking between the vibration sensor and the base, so as to ensure the accuracy of the monitoring. In order to meet the above requirements, the connection part 3 is selected to be threaded or plugged. Such a setting can not only facilitate and quickly install the vibration sensor, but also make the vibration sensor stably and shake-free fixed on the mounting surface 12 of the main body 1, so as to avoid the vibration sensor falling off from the base mounting surface 12 due to loose connection, thereby ensuring the safety of the monitoring process.

[0047] As attached Figure 3 As shown, the depth of the threaded hole is 1 / 3-1 / 4 of the side length of the main body 1, and the inner diameter is 1 / 5 of the side length of the main body 1. Since the threaded holes are arranged on the upper surface and four side surfaces of the main body 1, and are all located in the center, if the depth of the threaded hole is greater than 1 / 3 of the side length of the main body 1, it is easy to cause the threaded holes to be common, affecting the stability of the installation of the vibration sensor; if the depth of the threaded hole is less than 1 / 4 of the side length of the main body 1, the vibration sensor may fall off due to the vibration of the turntable during monitoring, posing a safety hazard. In this embodiment, the side length of the main body 1 is 3cm, the depth of the threaded hole is 1 / 3 of the side length of the main body 1, that is, 1cm, and the inner diameter of the threaded hole is 1 / 5 of the side length of the main body 1, that is, 6mm. On the two mounting surfaces 12 of the main body 1, such as the left side and the right side, the sum of the depths of the two threaded holes is 2cm, which is less than the 3cm side length of the main body 1, and will not cause the threaded holes to be common.

[0048] In this embodiment, the vibration sensor is cylindrical in shape, and a threaded column is provided on its lower surface, which is threadedly fixed to the threaded hole, and the lower surface is in abutment with the mounting surface 12 of the main body 1 to achieve vibration transmission. The advantage of setting the vibration sensor to be cylindrical is that it is easy to install; a threaded column is provided on the lower surface of the vibration sensor, and an external thread consistent with the thread of the threaded hole is provided on the surface of the threaded column, which is used to ensure that the connection between the main body 1 and the vibration sensor will not loosen; the lower surface of the vibration sensor is in abutment with the mounting surface 12 of the main body 1, so that the vibration of the rotating machine can be transmitted to the surface of the vibration sensor through the base, reducing the loss during the vibration transmission process and improving the accuracy of monitoring.

[0049] The above-mentioned implementation modes are only preferred implementation modes of the present invention, and cannot be used to limit the protection scope of the present invention. Any non-substantial changes and substitutions made by technicians in this field on the basis of the present invention shall fall within the scope of protection required by the present invention.

Claims

1. A magnetic positioning base for a multi-directional vibration sensor suitable for curved surface structures, characterized in that: include: The main body is a cubic structure with mounting surfaces in multiple directions; A magnetic attraction component is arranged below the main body, and a groove is arranged on the lower surface of the magnetic attraction component, which is used to adsorb the main body on the curved surface of the monitored rotating machine, and the groove is an axisymmetric structure, and its axis is parallel to the axis of the monitored rotating machine curved surface; It also includes a connecting portion arranged on the installation surface, which is used for fixing and installing a vibration sensor in a corresponding direction.

2. The magnetic positioning base for a multi-directional vibration sensor suitable for a curved surface structure according to claim 1, characterized in that: The magnetic attraction component is made of a strong magnetic material, and the main body is made of copper or stainless steel.

3. The magnetic positioning base for a multi-directional vibration sensor suitable for a curved surface structure according to claim 2, characterized in that: One of the lower surface of the main body and the upper surface of the magnetic attraction component is provided with a clamping block, and the other is provided with a clamping slot, the shape of the clamping block corresponds to the shape of the clamping slot, the clamping block is clamped with the clamping slot to connect the main body and the magnetic attraction component into one, and the clamping slot is a wedge-shaped slot, a dovetail slot or an I-shaped slot; Alternatively, the lower surface of the main body and the upper surface of the magnetic attraction component are bonded and fixed by metal glue.

4. The magnetic positioning base for a multi-directional vibration sensor suitable for a curved surface structure according to claim 1, characterized in that: The side length of the main body is 3-4 cm.

5. The magnetic attraction positioning base for a multi-directional vibration sensor suitable for a curved surface structure according to claim 1 or 4, characterized in that: The length and width of the upper surface of the magnetic attraction component are both the side length of the main body, and the height of the magnetic attraction component is 1 / 6 of the side length of the main body.

6. The magnetic positioning base for a multi-directional vibration sensor suitable for a curved surface structure according to claim 1, characterized in that: The magnetic attraction component includes feet located on both sides of the groove, the two feet are symmetrical about the axis, and the width of the feet is 1 / 10 of the side length of the main body.

7. The magnetic positioning base for a multi-directional vibration sensor suitable for a curved surface structure according to claim 6, characterized in that: Inclined surfaces are respectively arranged at the connection points between the two feet and the grooves, and the two inclined surfaces are symmetrical about the axis and arranged opposite to each other.

8. The magnetic positioning base for a multi-directional vibration sensor suitable for a curved surface structure according to claim 1, characterized in that: The groove is a curved groove extending in the axial direction, the curved top of the groove is tangent to a plane extending downward from the lower surface of the main body, and the height difference between the plane and the lower surface of the main body is 1.5-3mm.

9. The magnetic positioning base for a multi-directional vibration sensor suitable for a curved surface structure according to claim 1, characterized in that: The connecting portion is a threaded hole, and a threaded hole is respectively provided on the upper surface and the center of the four side surfaces of the main body, and the vibration sensor is threadedly connected to the threaded hole; Alternatively, the connecting portion is a socket, and a socket is respectively provided on the upper surface of the main body and at the center of the four side surfaces, and the vibration sensor is plugged into and fixed to the socket.

10. The magnetic attraction positioning base for a multi-directional vibration sensor suitable for a curved surface structure according to claim 9, characterized in that: The depth of the threaded hole is 1 / 3-1 / 4 of the side length of the main body; the inner diameter of the threaded hole is 1 / 5 of the side length of the main body.

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