A bolt loosening monitoring device

Abstract

The present invention relates to a bolt loosening monitoring device, which comprises a device body, a clamping mechanism, a sensing component and a wireless transmitter. The clamping mechanism includes two relatively arranged clamping plates, which are movably arranged on the device body, and a clamping opening for clamping a flange is formed between the two clamping plates. Through holes for bolts to penetrate are provided on the inner side walls of the two clamping plates facing each other. The sensing component is arranged in at least one through hole and is used for detecting whether the bolt is displaced. The wireless transmitter is arranged on the device body and is electrically connected to the sensing component, and is used for sending the serial number of the bolt. Based on the above structure, the clamping mechanism can clamp the flange through its own clamping force, and the bolt loosening monitoring device can be easily disassembled and assembled by its own clamping force without any tools, greatly improving the installation efficiency of the bolt loosening monitoring device. In addition, the bolt loosening monitoring device also has functions such as remotely and online monitoring the loosening condition of the bolt and accurately positioning the position of the loosened bolt.

Description

Technical Field

[0001] The present invention relates to the technical field of wind power generation equipment, and particularly to a bolt loosening monitoring device. Background Art

[0002] With the popularization and application of new energy power generation technologies, wind power generation has become one of the most important directions in the power generation field. The construction of wind turbines is in full swing, and its power generation share is also increasing year by year. Since wind turbines often need to withstand various wind loads, the components of wind turbines, especially between each section of the tower barrel, are all connected by flanges and high-strength bolts. During actual operation, the components of wind turbines, especially the tower barrel, are extremely prone to vibration under huge alternating loads, which are ultimately transmitted to the flanges and bolts, resulting in bolt loosening or even fracture, causing serious accidents. Therefore, it is usually necessary for workers to monitor the loosening condition of bolts.

[0003] Traditional bolt loosening monitoring is generally carried out by manual regular on-site inspections. The inspection cycle is generally half a year or even one year. It is impossible to detect bolt loosening in a timely manner, and it is difficult to accurately locate the position of the loosened bolt. Moreover, manual inspections are quite labor-intensive and resource-consuming. In the prior art, some bolt loosening monitoring devices conduct online monitoring by installing sensors such as strain gauges on bolts. However, since some flanges on the components of wind turbines, especially the tower barrel, are usually located dozens of meters above the ground, workers need to install a large number of monitoring devices at high altitudes. The disassembly and installation of existing monitoring devices require the assistance of a variety of tools, which is rather cumbersome and greatly reduces the installation efficiency of the monitoring devices. Summary of the Invention

[0004] The object of the present invention is to provide a bolt loosening monitoring device that can conduct online monitoring, is convenient for disassembly and installation, and can accurately locate loosened bolts.

[0005] To achieve the above object, the present invention provides a bolt loosening monitoring device, which includes:

[0006] A device body;

[0007] A clamping mechanism, the clamping mechanism includes two relatively arranged clamping plates, the clamping plates are movably arranged on the device body, and a clamping opening for clamping the flange is formed between the two clamping plates. Through holes for the bolts to pass through are provided on the inner side walls of the two clamping plates facing each other;

[0008] A sensing assembly, arranged in at least one of the through holes, for detecting whether the bolt has a displacement;

[0009] A wireless transmitter, arranged on the device body and electrically connected to the sensing assembly, for sending the serial number of the bolt.

[0010] In some embodiments of the present application, a slideway is provided on the device body, and one end of the clamping plate is located in the slideway.

[0011] In some embodiments of the present application, the outer side walls of the two clamping plates facing away from each other are respectively connected to the two end walls of the slideway through elastic members.

[0012] In some embodiments of the present application, the inner side walls of the two clamping plates facing each other are connected through an elastic member.

[0013] In some embodiments of the present application, the sensing assembly includes two reset sensors oppositely arranged on the groove walls of the hole groove, and a gap for the bolt to penetrate is formed between the two reset sensors.

[0014] In some embodiments of the present application, a connecting plate for connecting with the bolt is provided at one end of the reset sensor close to the bolt, and the connecting plate is an arc-shaped plate matching the shape of the bolt.

[0015] In some embodiments of the present application, there are two sensing assemblies, and the two sensing assemblies are respectively arranged on the groove walls of the two hole grooves.

[0016] In some embodiments of the present application, it further includes an audible and visual alarm arranged on the outer wall of the device body, and the audible and visual alarm is electrically connected to the sensing assembly.

[0017] In some embodiments of the present application, distance scales are provided on the outer wall of the device body, and the distance scales are used to display the distance between the inner side walls of the two clamping plates.

[0018] In some embodiments of the present application, holding parts are provided at both ends of the device body, and the holding parts are symmetrically arranged.

[0019] The present invention provides a bolt loosening monitoring device. Compared with the prior art, its beneficial effects are as follows:

[0020] The bolt loosening monitoring device provided by the present invention includes a device body, a clamping mechanism, a sensing component, and a wireless transmitter. The clamping mechanism includes two relatively arranged clamping plates, which are movably arranged on the device body, and a clamping opening for clamping the flange is formed between the two clamping plates. Through holes for bolts to penetrate are provided on the inner side walls of the two clamping plates facing each other. The sensing component is arranged in at least one through hole and is used to detect whether the bolt is displaced. The wireless transmitter is arranged on the device body and is electrically connected to the sensing component, and is used to send the serial number of the bolt. Based on the above structure, the user makes the width of the clamping opening greater than the length of the bolt by sliding the two clamping plates, and makes the bolt penetrate into the through hole. At this time, when the hand is released, the clamping mechanism can clamp the flange through its own clamping force, so that the bolt loosening monitoring device is fixed on the flange bolt. The setting of the clamping mechanism enables the bolt loosening monitoring device to be easily disassembled and assembled through its own clamping force without the aid of any tools, reducing the difficulty of disassembly and assembly and greatly improving the installation efficiency of the bolt loosening monitoring device. Secondly, the sensing component can monitor the displacement of the bolt in real time. When the bolt is displaced and / or its displacement amount exceeds a predetermined range, the sensing component will send a signal to the staff through the wireless transmitter by means of electrical connection such as a trigger circuit, enabling the bolt loosening monitoring device to remotely monitor the loosening of the bolt online, so as to timely detect the loosening of the bolt. The staff can determine the loosening situation of the bolt without on-site inspection, saving manpower and material resources. The sensing component is generally a precision instrument, and its arrangement in the clamping plate can also reduce the corrosion caused by wind and rain to a certain extent, thereby extending the service life of the sensing component and making the bolt loosening monitoring device not prone to failure. In addition, the wireless transmitter can also send the serial number of the loosened bolt, enabling the staff to accurately locate the position of the loosened bolt, which is conducive to quickly determining the position of the loosened bolt when troubleshooting the loosened bolt on-site and improving the efficiency of repairing the loosened bolt. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 is a schematic diagram of the overall structure of the bolt loosening monitoring device according to an embodiment of the present invention;

[0022] Figure 2 is a partial cross-sectional view of the bolt loosening monitoring device according to an embodiment of the present invention;

[0023] Figure 3 is a partial cross-sectional view of the bolt loosening monitoring device according to another embodiment of the present invention;

[0024] Figure 4 is a schematic diagram of the partial structure of the clamping mechanism according to an embodiment of the present invention.

[0025] In the figure: 1. Device body; 11. Slideway; 12. Distance scale; 13. Holding part; 2. Clamping mechanism; 21. Clamping plate; 211. Hole groove; 22. Clamping opening; 23. Elastic part; 3. Sensing assembly; 31. Reset sensor; 311. Connecting plate; 4. Wireless transmitter; 5. Acousto-optic alarm; 6. Flange; 7. Bolt; 8. Tower barrel. Detailed implementation manners

[0026] Next, the technical solutions in the embodiments of the present application will be clearly and completely described with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present application without creative efforts shall fall within the protection scope of the present application.

[0027] It should be understood that in the description of the present application, the orientation or positional relationship indicated by the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present application 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 a limitation to the present application. The terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features, that is, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In addition, unless otherwise specified, the meaning of "plurality" is two or more.

[0028] It should be noted that in the description of the present application, unless otherwise clearly specified and limited, the terms "installation", "connection", and "connection" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific situations.

[0029] Such as Figure 1 And Figure 2As shown in the figure, an embodiment of the present invention provides a bolt loosening monitoring device, which includes a device body 1, a clamping mechanism 2, a sensing component 3, and a wireless transmitter 4. The clamping mechanism 2 includes two oppositely arranged clamping plates 21. The clamping plates 21 are movably arranged on the device body 1, and a clamping opening 22 for clamping a flange 6 is formed between the two clamping plates 21. Through holes 211 for bolts 7 to penetrate are provided on the inner side walls of the two clamping plates 21 facing each other. The sensing component 3 is arranged in at least one through hole 211 for detecting whether the bolts 7 are displaced. The wireless transmitter 4 is arranged on the device body 1 and is electrically connected to the sensing component 3, and is used for sending the serial numbers of the bolts 7.

[0030] Based on the above structure, the user slides the two clamping plates 21 to make the width of the clamping opening 22 greater than the length of the bolt 7, and inserts the bolt 7 into the through hole 211. At this time, when the hand is released, the clamping mechanism 2 can clamp the flange 6 through its own clamping force, so that the bolt loosening monitoring device is fixed on the bolt 7 of the flange 6. The setting of the clamping mechanism 2 enables the bolt loosening monitoring device to be easily disassembled and assembled without the aid of any tools but through its own clamping force. Especially, it reduces the difficulty of disassembly and assembly on the tower barrel 8 of the wind turbine generator, and greatly improves the installation efficiency of the bolt loosening monitoring device. Secondly, the sensing component 3 can monitor the displacement of the bolt 7 in real time. When the bolt 7 is displaced and / or its displacement amount exceeds a predetermined range, the sensing component 3 will send a signal to the staff through the wireless transmitter 4 in a way of electrical connection such as a trigger circuit, so that the bolt loosening monitoring device can realize remote online monitoring of the loosening of the bolt 7, and thus timely detect the loosening of the bolt 7. The staff can determine the loosening situation of the bolt 7 without on-site inspection of the tower barrel 8 of the wind turbine generator and the flanges 6 of other components, saving manpower and material resources. The sensing component 3 is generally a precision instrument. Its arrangement in the clamping plate 21 can also reduce the corrosion caused by the common wind and rain at the location of the wind turbine generator to a certain extent, thereby prolonging the service life of the sensing component 3 and making the bolt loosening monitoring device not prone to failure. In addition, the wireless transmitter 4 can also send the serial number of the loosened bolt 7, enabling the staff to accurately locate the position of the loosened bolt 7, which is beneficial to more quickly determining the position of the loosened bolt 7 when troubleshooting the loosened bolt 7 on-site and improving the maintenance efficiency of the loosened bolt 7.

[0031] It should be emphasized that the bolt loosening monitoring device provided by the embodiment of the present invention is not only applicable to the tower barrel 8 and other components of the wind turbine generator, but also applicable to other mechanical components connected by flanges 6 and bolts 7.

[0032] Optionally, as Figure 2As shown in the figure, in this embodiment, the device body 1 is provided with a slideway 11, and one end of the clamping plate 21 is located in the slideway 11. Specifically, one end of the clamping plate 21 is provided with a slider matching the slideway. Based on this, the guide rail plays a role in guiding and limiting one end of the clamping plate 21, enabling the clamping plate 21 to slide relatively along a predetermined direction, making the sliding of the two more smooth, and preventing the operation difficulty from increasing due to their movement in different directions. It should be understood that there are various ways to realize the sliding of the clamping plate 21 on the device body 1, not limited to the above setting form, as long as the clamping plate 21 can slide along a predetermined direction within the device body 1, for example, one end of the clamping plate 21 is provided with a roller matching the slideway 11, etc.

[0033] Optionally, as Figure 2 shown, in this embodiment, the outer walls of the two opposite clamping plates 21 are respectively connected to the two end walls of the slideway 11 through elastic members 23; preferably, the elastic members 23 are springs. Based on this, the elastic members 23 can push against the two clamping plates 21 and make them approach each other to clamp the flange 6, thereby realizing the connection between the bolt loosening monitoring device and the flange 6.

[0034] It should be emphasized that the way to realize the clamping of the flange by the clamping plate is not limited to the above way. As Figure 3 shown, in another embodiment, the inner walls of the two opposite clamping plates 21 are connected through elastic members 23. In this way, the connection between the bolt loosening monitoring device and the flange 6 can be realized with a smaller number of elastic members 23.

[0035] Optionally, as Figure 2 shown, in this embodiment, the sensing assembly 3 includes two reset sensors 31 oppositely arranged on the groove walls of the hole groove 211, and a gap for the bolt 7 to penetrate is formed between the two reset sensors 31. Based on this, the two reset sensors 31 being oppositely arranged can more accurately detect the displacement of the bolt 7, improving the accuracy of bolt 7 loosening monitoring, so that the staff can accurately obtain the loosening condition of the bolts 7 of each component of the wind turbine generator.

[0036] It should be understood that the reset sensor 31 is a prior art, generally a spring self-resetting sensor 31, including a housing, a thimble and a reset spring sleeved on the thimble, and outputs corresponding signals through the displacement of the thimble on the housing to realize the measurement of the displacement amount and / or distance. The reset sensor 31 generally realizes the self-resetting function through its reset spring.

[0037] Optionally, as Figure 2As shown, in this embodiment, one end of the reset sensor 31 close to the bolt 7 is provided with a connecting plate 311 for connecting with the bolt 7. The connecting plate 311 is an arc-shaped plate matching the shape of the bolt 7. Preferably, the connecting plate 311 is made of anti-slip material such as rubber. In this way, the reset sensor 31 can accurately align with the bolt 7 through the connecting plate 311, improving the working stability of the reset sensor 31. The arc-shaped connecting plate 311 can better fit the outer wall of the bolt 7 and play a role in reducing the vibration and / or loosening of the bolt 7. Therefore, the connecting plate 311 has the function of assisting in fixing the bolt 7 and preventing the bolt 7 from loosening to a certain extent. The connecting plate 311 made of anti-slip material is not easy to slip with the bolt 7, so as to better fit the bolt 7.

[0038] Optionally, as Figure 2 shown, in this embodiment, there are two sensing components 3, and the two sensing components 3 are respectively arranged on the walls of the two holes 211. Based on this, the reset sensor 31 can obtain the displacement amounts at both ends of the bolt 7, so that the bolt loosening monitoring device can further accurately obtain the loosening condition of the bolt 7, thereby further improving the accuracy of the bolt loosening monitoring device. The connecting plate 311 is connected to both ends of the bolt 7, so that the connecting plate 311 can further assist in fixing the bolt 7 and reducing the loosening of the bolt 7.

[0039] Optionally, as Figure 1 and 2 shown, in this embodiment, the bolt loosening monitoring device further includes an acoustic-optic alarm 5 arranged on the outer wall of the device body 1. The acoustic-optic alarm 5 is electrically connected to the sensing component 3. Based on this, when the bolt 7 generates displacement and / or its displacement amount exceeds a predetermined range, the acoustic-optic alarm 5 will emit sound and / or light signals, so that the staff can clearly know the position of the loosened bolt 7. Therefore, the bolt loosening monitoring device not only enables the staff to remotely know the serial number of the bolt 7 through the wireless transmitter 4, but also more clearly informs the staff of the position of the loosened bolt 7 through the acoustic-optic alarm 5. The combination of the wireless transmitter 4 and the acoustic-optic alarm 5 enables the staff to more quickly and accurately locate the position of the loosened bolt 7, thus greatly improving the maintenance efficiency of the loosened bolt 7.

[0040] Optionally, as Figure 1 and Figure 2As shown, in this embodiment, a distance scale 12 is provided on the outer wall of the device body 1. The distance scale 12 is used to display the distance between the inner walls of the two clamping plates 21. Specifically, the distance scale 12 is arranged at equal intervals along the length direction of the slideway 11. Based on this, the length of the flange 6 bolt 7 is generally relatively fixed. The distance scale 12 can assist the staff in adjusting the distance between the clamping plates 21 according to the length of the bolt 7 when installing the bolt loosening monitoring device, eliminating the step of debugging and measuring the distance between the clamping plates 21 during each installation, thereby further improving the efficiency of installing the bolt loosening monitoring device.

[0041] Optionally, as Figure 1 shown, in this embodiment, holding parts 13 are provided at both ends of the device body 1, and the holding parts 13 are symmetrically arranged. In this way, the holding parts 13 protrude from the surface of the device body 1, enabling it to better fit the user's palm. The user can more easily hold the device body 1 through the holding parts 13, thereby improving the convenience of disassembling and assembling the bolt loosening monitoring device.

[0042] The installation method of the bolt loosening monitoring device provided by the embodiment of the present invention is as follows: According to the length of the bolt 7 and the distance scale 12, slide and change the distance between the two clamping plates 21 so that the bolt 7 passes through the hole slot 211 and into the gap between the reset sensors 31. Release the clamping plates 21, and let the clamping plates 21 slide along the slideway 11 and clamp the flange 6 to complete the installation.

[0043] In summary, the embodiment of the present invention provides a bolt loosening monitoring device, which mainly consists of a device body 1, a clamping mechanism 2, a sensing component 3, and a wireless transmitter 4. The clamping mechanism 2 includes two relatively arranged clamping plates 21. The clamping plates 21 are movably arranged on the device body 1, and a clamping opening 22 for clamping the flange 6 is formed between the two clamping plates 21. Hole slots 211 for the bolt 7 to pass through are provided on the opposite inner walls of the two clamping plates 21. The sensing component 3 is arranged in at least one hole slot 211 and is used to detect whether the bolt 7 has a displacement. The wireless transmitter 4 is arranged on the device body 1 and is electrically connected to the sensing component 3, and is used to send the serial number of the bolt 7. Compared with the prior art, this bolt loosening monitoring device has the advantages of on-line monitoring, convenient disassembly and assembly, and accurate positioning of the loosened bolt 7.

[0044] The above are only the preferred embodiments of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the technical principle of the present invention, several improvements and replacements can be made, and these improvements and replacements should also be regarded as the protection scope of the present invention.

Claims

1. A bolt loosening monitoring device, characterized in that, Comprising: The device body; A clamping mechanism, the clamping mechanism includes two oppositely arranged clamping plates, the clamping plates are movably arranged on the device body, and a clamping opening for clamping the flange is formed between the two clamping plates, and through holes for the bolts to penetrate are provided on the inner side walls of the two clamping plates facing each other; A sensing component, arranged in at least one of the through holes, for detecting whether the bolt is displaced; A wireless transmitter, arranged on the device body and electrically connected to the sensing component, for sending the serial number of the bolt; The device body is provided with a slideway, and one end of the clamping plate is located in the slideway; The outer side walls of the two clamping plates facing away from each other are respectively connected to the two end walls of the slideway through elastic members; The inner side walls of the two clamping plates facing each other are connected through an elastic member.

2. The bolt loosening monitoring device according to claim 1, characterized in that: The sensing component includes two reset sensors oppositely arranged on the groove wall of the through hole, and a gap for the bolt to penetrate is formed between the two reset sensors.

3. The bolt loosening monitoring device according to claim 2, characterized in that: A connecting plate for contacting the bolt is provided at one end of the reset sensor close to the bolt, and the connecting plate is an arc-shaped plate matching the shape of the bolt.

4. The bolt loosening monitoring device according to claim 3, characterized in that: There are two sensing components, and the two sensing components are respectively arranged on the groove walls of the two through holes.

5. The bolt loosening monitoring device according to claim 1, characterized in that: It further includes an audible and visual alarm arranged on the outer wall of the device body, and the audible and visual alarm is electrically connected to the sensing component.

6. The bolt loosening monitoring device according to claim 1, characterized in that: A distance scale is provided on the outer wall of the device body, and the distance scale is used to display the distance between the inner side walls of the two clamping plates.

7. The bolt loosening monitoring device according to claim 1, characterized in that: Grip portions are provided at both ends of the device body, and the grip portions are symmetrically arranged.

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