Intelligent early-warning anti-loosening device

Abstract

An intelligent early-warning anti-loosening device relates to the field of bolt anti-loosening early warning and comprises an early-warning nut, an alarm switch is arranged on one end face of the early-warning nut, a telescopic cover capable of covering the alarm switch is arranged on the end face, where the alarm switch is located, of the early-warning nut, and the telescopic cover comprises a telescopic cylinder and a gasket. One end of the telescopic cylinder is fixed to the end face of the early warning nut, the other end of the telescopic cylinder is connected with the gasket, a center through hole with the diameter not smaller than the inner diameter of the early warning nut is formed in the gasket, the telescopic cylinder, the gasket and the early warning nut are coaxially distributed, and the gasket and the alarm switch can be separated in the natural state of the telescopic cylinder. And the telescopic cylinders are in contact in a compressed state. The early-warning anti-loosening device is used for solving the technical problems that in an existing early-warning anti-loosening device, due to the size difference between a main connecting nut and an early-warning nut, alarm triggering fails, a gasket sinks in a non-horizontal installation scene, and a switch is prone to being interfered in the outdoor environment.

Description

Technical Field

[0001] This utility model relates to the field of bolt anti-loosening early warning, specifically an intelligent early warning anti-loosening device. Background Technology

[0002] In the field of power engineering, the normal operation of equipment is crucial for production efficiency and safety. Regular inspections are essential to ensure equipment is in good condition. However, traditional manual inspection methods face numerous challenges, such as high difficulty, high risk, and low efficiency.

[0003] Existing technologies disclose several early warning and anti-loosening devices, which include an early warning nut on the bolt. Specifically, the bolt has a main connecting nut and an early warning nut. The early warning nut has a receiving cavity and is equipped with a power supply and an alarm light. An alarm switch is located on the end face of the early warning nut facing the main connecting nut. When loosening occurs, the main connecting nut moves towards the early warning nut and touches the alarm switch, causing the alarm light to sound. For example, Chinese utility model patent application number 202022212301.4 discloses an anti-loosening bolt device for connecting tunnel boring machines.

[0004] However, since the end face of the warning nut needs to be equipped with an alarm switch, and its internal components need to include a power supply, an alarm light, and related electronic components, its size is generally large. Meanwhile, the main connecting nut is mostly a standard-sized engineering nut. Therefore, there may be situations where the main connecting nut is small and the warning nut is large, resulting in the main connecting nut being unable to activate the alarm switch.

[0005] To address this, the applicant attempted to add a washer between the main connecting nut and the warning nut. By selecting washers of different sizes, the main connecting nut could be able to press the alarm switch through the washer.

[0006] However, this improvement still has shortcomings: when the bolt is not horizontal and the main connecting nut is above the warning nut, the washer will sink due to its own weight, which reduces the reliability of alarm triggering; in addition, when such a warning anti-loosening device is used in an outdoor environment, the alarm switch is exposed to the outside for a long time. On the one hand, the harsh environmental conditions will have an adverse effect on the performance of the switch, and on the other hand, solid foreign objects may be trapped in the gap between the warning nut and the washer, which will affect the normal start of the alarm switch and cause the warning function to fail. Utility Model Content

[0007] This invention provides an intelligent early warning and anti-loosening device to solve the technical problems of alarm trigger failure caused by the size difference between the main connecting nut and the early warning nut in existing early warning and anti-loosening devices, as well as the sinking of the gasket in non-horizontal installation scenarios and the susceptibility of the switch to interference in outdoor environments.

[0008] To achieve the above objectives, the specific solution adopted by this utility model is as follows: an intelligent early warning and anti-loosening device, including an early warning nut, an alarm switch is provided on one end face of the early warning nut, and a telescopic cover is provided on the end face of the early warning nut where the alarm switch is located, which can cover the alarm switch. The telescopic cover includes a telescopic cylinder and a gasket. One end of the telescopic cylinder is fixed to the end face of the early warning nut, and the other end is connected to the gasket. The gasket has a central through hole with a diameter not less than the inner diameter of the early warning nut. The telescopic cylinder, the gasket, and the early warning nut are coaxially distributed. The gasket and the alarm switch can remain separated in the natural state of the telescopic cylinder and come into contact in the compressed state of the telescopic cylinder.

[0009] As a further optimization of the above technical solution, the telescopic cylinder is a corrugated cylinder.

[0010] As a further optimization of the above technical solution, the telescopic cylinder includes a flexible tube and multiple springs circumferentially arranged inside the flexible tube, with the length direction of the springs parallel to the axial direction of the warning nut.

[0011] As a further optimization of the above technical solution, the side of the gasket facing the warning nut is the working surface for triggering the alarm switch. The outer periphery of the working surface has a concave annular receiving groove, and the depth of the annular receiving groove is not less than the length of the compressed telescopic cylinder.

[0012] As a further optimization of the above technical solution, the outer diameter of the telescopic cylinder is the same as the outer diameter of the gasket.

[0013] As a further optimization of the above technical solution, a fixing hole is provided radially along the warning nut. The fixing hole is a threaded through hole and is fitted with a fixing screw.

[0014] As a further optimization of the above technical solution, the alarm switch button is made of rubber.

[0015] As a further optimization of the above technical solution, the warning nut includes a threaded cylinder and a housing fixed outside the threaded cylinder. An alarm switch is located on the end face of the housing. The other end of the housing is open and is provided with an end cap that can seal the opening. The power supply and alarm light are located in the inner cavity of the housing.

[0016] As a further optimization of the above technical solution, the outer surface of the end cap and / or the shell is made of transparent material.

[0017] As a further optimization of the above technical solution, the end cap and the housing are fastened together.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] 1. This utility model provides a telescopic cover on the end face of the warning nut where the alarm switch is located. When the bolt loosens, the main connecting nut moves towards the warning nut, and the main connecting nut squeezes the washer, which in turn compresses the telescopic cylinder. The washer then contacts the alarm switch, triggering the alarm. This solves the problem that the main connecting nut cannot reach the alarm switch due to its small size. Furthermore, the telescopic cylinder protects the alarm bolt and prevents solid foreign objects from getting stuck between the washer and the warning nut, thus ensuring the normal activation of the alarm switch.

[0020] 2. By setting a concave annular storage groove on the outer periphery of the gasket working surface, the compressed telescopic cylinder can be stored, allowing the gasket working surface to directly contact the alarm switch, thus avoiding the presence of the compressed telescopic cylinder affecting the contact between the gasket and the alarm switch.

[0021] 3. A fixing hole is provided along the radial direction of the warning nut. The fixing screw passes through the fixing hole to fix the warning nut to the bolt and prevent it from rotating on its own. When the bolt is loose, the fixed warning nut can prevent the main connecting nut from moving excessively through physical limit, which helps to achieve mechanical anti-loosening and forms a double protection with the alarm function. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the external structure of the present utility model;

[0023] Figure 2 This is a cross-sectional view of the present invention;

[0024] Figure 3 for Figure 2 Enlarged view of point A in the middle;

[0025] Figure 4 This is a front view schematic diagram along the gasket direction of this utility model;

[0026] Figure 5 This is a schematic diagram of the end face of the warning nut where the alarm switch is located;

[0027] Figure 6 This is a side view of the warning nut and its alarm switch.

[0028] Reference numerals: 1. Bolt, 2. Main connecting nut, 3. Washer, 301. Annular storage groove, 302. Working surface, 4. Telescopic cylinder, 5. Fixing hole, 6. Warning nut, 601. Housing, 602. End cap, 603. Threaded cylinder, 7. Alarm switch, 8. Alarm light, 9. Power supply. Detailed Implementation

[0029] The technical solution of this utility model will be further described in detail below with reference to specific embodiments. Parts not described or disclosed in detail in the following embodiments of this utility model should be understood as prior art known or should be known by those skilled in the art.

[0030] like Figure 1 , 5 As shown in Figure 6, this utility model discloses an intelligent early warning and anti-loosening device. This device is connected to the bolt 1 where the main connecting nut 2 is located. When the bolt 1 loosens, the main connecting nut 2 moves towards the early warning and anti-loosening device. The device includes an early warning nut 6, with an alarm switch 7 located on one end face. The main connecting nut 2 moves towards the device and touches the alarm switch 7, causing the alarm light 8 to sound an alarm, thus providing an early warning of bolt 1 loosening.

[0031] Specifically, the warning nut 6 includes a threaded cylinder 603 and a housing 601 fixed to the outside of the threaded cylinder 603. The inner surface of the threaded cylinder 603 is provided with an internal thread adapted to the bolt 1. The housing 601 includes a cylindrical body with a hexagonal radial cross-section and an end face fixed to one end of the cylindrical body. The end face is an annular surface, with its outer edge being hexagonal with the same size as the cylindrical body and its inner edge being circular and fixed to the outer surface of the threaded cylinder 603. The specific fixing method is existing technology, and bonding, welding, or integral molding connection methods are all acceptable. Alarm switches 7 are located on the outside of this end face. There are three alarm switches 7, which are evenly distributed circumferentially on this end face. The other end of the cylindrical body is open and is provided with an end cap 602 that can seal the opening. The plane of the end cap 602 opposite to the end face where the alarm switches 7 are located is the other end face of the warning nut 6. The end cap 602 is detachably mounted on the housing 601. There is no limitation on the detachable connection method, as long as the end cap 602 can be opened and the opening of the end cap 602 can be sealed. In this embodiment, the end cap 602 is fastened to the housing 601.

[0032] The power supply 9 and the alarm light 8 are located inside the housing 601. The power supply 9 is an electronic power supply, and the alarm light 8 is an LED. The housing 601 also contains other electronic components for connecting the power supply 9, the alarm light 8, and the alarm switch 7, so that the alarm light 8 can light up when the alarm switch is touched. The specific structure and connection method of the alarm light 8, the power supply 9, and the alarm switch 7 are all existing technologies.

[0033] Both the end cap 602 and the outer surface of the housing 601 are made of transparent material, which makes it easy to observe the working status of the internal alarm light 8 and facilitates the inspection personnel to quickly determine the status of the bolt 1.

[0034] like Figure 2 , 4As shown, a telescopic cover is provided on the end face of the warning nut 6 where the alarm switch 7 is located, capable of covering the alarm switch 7. The telescopic cover includes a telescopic cylinder 4 and a gasket 3. One end of the telescopic cylinder 4 is fixed to the end face of the warning nut 6, and the other end is connected to the gasket 3. The gasket 3 is an annular gasket with a central through hole having a diameter not less than the inner diameter of the warning nut 6. The telescopic cylinder 4, the gasket 3, and the warning nut 6 are coaxially distributed, and the telescopic direction of the telescopic cylinder 4 is the axial direction of the warning nut 6. The gasket 3 and the alarm switch 7 can remain separated in the natural state of the telescopic cylinder 4 and come into contact in the compressed state of the telescopic cylinder 4.

[0035] The elastic force of the telescopic cylinder 4 is greater than the weight of the gasket 3, ensuring that the gasket 3 will not sink due to gravity when not installed horizontally.

[0036] The length of the telescopic cylinder 4 is only required to ensure that the pad 3 and the alarm switch 7 do not contact each other in its natural state (uncompressed or stretched state). Therefore, the telescopic cylinder 4 is relatively short and is not prone to displacement during its compression process.

[0037] To further ensure that the telescopic cylinder 4 can move along its axial direction and to prevent the telescopic cylinder 4 from shifting during compression, the diameter of the central through hole on the gasket 3 is the same as the inner diameter of the warning nut 6.

[0038] It should be noted that the thickness of the washer 3 is greater than the pitch of the bolt 1 where the warning nut 6 is located, in order to prevent the washer 3 from getting stuck in the thread groove of the bolt 1 and affecting its sliding on the bolt 1.

[0039] The telescopic cylinder 4 is a corrugated cylinder, which is made by cutting a corrugated tube. Corrugated tube is a common extensible material with a certain elasticity and can be compressed, making it suitable for mass production and reducing manufacturing costs. One end of the corrugated tube can be directly glued or clipped to the end face of the warning nut 6, simplifying the assembly process.

[0040] As another configuration of the telescopic cylinder 4, the telescopic cylinder 4 includes a flexible tube and multiple springs (not shown in the figure) circumferentially arranged inside the flexible tube. The length direction of the springs is parallel to the axial direction of the warning nut 6. The flexible tube mentioned in this utility model refers to a tubular structure formed by a flexible material wrapped around the alarm switch 7. The flexible material is connected to the end face where the warning switch is located, and the other end is connected to the gasket 3. The flexible material is plastic, rubber, etc. To prevent the gasket 3 from sinking due to lack of support from the flexible material when the bolt 1 is in a vertical state, multiple springs are installed inside the flexible tube, and the springs are evenly distributed circumferentially on the annular gasket 3.

[0041] The outer diameter of the telescopic cylinder 4 is the same as that of the gasket 3. Since the end face of the warning nut 6 is hexagonal, the telescopic cylinder 4 can be connected to this hexagonal end face and is concentric with the inscribed circle of the hexagonal end face. The telescopic cylinder 4 is connected to the outer edge of the gasket 3, and the telescopic cylinder 4 forms an annular protective ring around the alarm switch 7, which enhances the protective effect of the warning switch, reduces the risk of foreign objects entering from the side, and also prevents the warning switch from being directly exposed to the external environment, thereby improving the durability and reliability of the switch.

[0042] like Figure 2 , 3 As shown, the side of the gasket 3 facing the warning nut 6 is the working surface 302 for triggering the alarm switch 7. The outer periphery of the working surface 302 has a concave annular receiving groove 301, the depth of which is not less than the length of the compressed telescopic cylinder 4. The working surface 302 can be designed as a flat surface or a boss shape according to the switch structure to ensure concentrated pressure when in contact with the switch, avoiding missed alarms due to insufficient contact area or dispersed pressure. When the telescopic cylinder 4 is compressed to its shortest state, it can be embedded in the annular receiving groove 301, preventing the compressed telescopic cylinder 4 from existing between the gasket 3 and the alarm switch 7. This ensures that the working surface 302 of the gasket 3 directly contacts the switch without obstruction, eliminating the influence of the compressed telescopic cylinder 4's length on the alarm action.

[0043] A fixing hole 5 is provided radially along the warning nut 6. The fixing hole 5 is a threaded through hole and a fixing screw is installed in it. The fixing screw can pass through the fixing hole 5 and abut against the bolt 1 where the warning nut 6 is located, so as to fix the warning nut 6 to the bolt 1. If the bolt 1 loosens, the main connecting nut 2 will move towards the warning nut 6. When the main connecting nut 2 moves to the warning nut 6, the warning nut 6 fixed on the bolt 1 restricts the further movement of the main connecting nut 2, thereby achieving anti-loosening to a certain extent.

[0044] This utility model connects to the bolt 1 via a threaded cylinder 603 and is fitted to the rubber button of the alarm switch 7 via a gasket 3, and is fixed by a fixing hole 5; the alarm light 8 is controlled by electronic components to emit light, and is powered by a power supply 9. The entire assembly is placed inside the housing cavity of the warning nut 6, and is finally closed by a transparent end cap 602, thereby protecting the internal components from external environmental interference, thus improving the anti-loosening and warning capabilities in actual application scenarios, and realizing the intelligent warning and anti-loosening functions of the device.

[0045] In use, the main connecting nut 2 is connected to the bolt 1, and the warning nut 6 is screwed to one side of the main connecting nut 2 through the threaded post. The fixing screw is passed through the fixing hole 5 and pressed against the outer wall of the bolt 1 to fix the warning nut 6.

[0046] Under normal conditions, the telescopic cylinder 4 elastically supports the pad 3, keeping the pad 3 in a non-contact state with the alarm switch 7, thus disconnecting the circuit and preventing the alarm light 8 from working.

[0047] When a loosening alarm occurs, the main connecting nut 2 moves to compress the gasket 3, and the elastic force of the telescopic cylinder 4 is less than the external pressure, thus compressing it until the gasket 3 touches the alarm switch 7, the circuit is connected, and the alarm light 8 sounds an alarm.

[0048] Meanwhile, the telescopic cylinder 4 continuously protects the alarm switch 7, preventing foreign objects from entering, and the annular storage groove 301 ensures that there is no structural interference after compression, guaranteeing smooth triggering action.

[0049] This utility model provides an intelligent early warning and anti-loosening device, which can prevent structural loosening through the structure of the fixing hole 5, and provide a loosening warning through the contact of the gasket 3 with the early warning and anti-loosening device, thereby improving the application of the combined anti-loosening and early warning scheme and facilitating production, processing, later maintenance and on-site operation.

[0050] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An intelligent early warning and anti-loosening device, comprising an early warning nut (6), wherein an alarm switch (7) is provided on one end face of the early warning nut (6), characterized in that, A telescopic cover is provided on the end face of the warning nut (6) where the alarm switch (7) is located, which can cover the alarm switch (7). The telescopic cover includes a telescopic cylinder (4) and a gasket (3). One end of the telescopic cylinder (4) is fixed to the end face of the warning nut (6), and the other end is connected to the gasket (3). The gasket (3) has a central through hole with a diameter not less than the inner diameter of the warning nut (6). The telescopic cylinder (4), the gasket (3) and the warning nut (6) are coaxially distributed. The gasket (3) and the alarm switch (7) can remain separated in the natural state of the telescopic cylinder (4) and come into contact in the compressed state of the telescopic cylinder (4).

2. The intelligent early warning and anti-loosening device according to claim 1, characterized in that, The telescopic cylinder (4) is a corrugated cylinder.

3. The intelligent early warning and anti-loosening device according to claim 1, characterized in that, The telescopic cylinder (4) includes a flexible tube and multiple springs arranged circumferentially inside the flexible tube, with the length direction of the springs parallel to the axial direction of the warning nut (6).

4. The intelligent early warning and anti-loosening device according to claim 1, characterized in that, The side of the gasket (3) facing the warning nut (6) is the working surface for triggering the alarm switch (7). The outer periphery of the working surface has a concave annular storage groove (301). The depth of the annular storage groove (301) is not less than the length of the compressed telescopic cylinder (4).

5. The intelligent early warning and anti-loosening device according to claim 1, characterized in that, The outer diameter of the telescopic cylinder (4) is the same as the outer diameter of the gasket (3).

6. The intelligent early warning and anti-loosening device according to claim 1, characterized in that, A fixing hole (5) is provided radially along the warning nut (6). The fixing hole (5) is a threaded through hole and is fitted with a fixing screw.

7. The intelligent early warning and anti-loosening device according to claim 1, characterized in that, The buttons of the alarm switch (7) are made of rubber.

8. The intelligent early warning and anti-loosening device according to claim 1, characterized in that, The warning nut (6) includes a threaded cylinder (603) and a housing (601) fixed outside the threaded cylinder (603). An alarm switch (7) is located on the end face of the housing (601). The other end of the housing (601) is open and is provided with an end cap (602) that can seal the opening. A power supply (9) and an alarm light (8) are located in the inner cavity of the housing (601).

9. The intelligent early warning and anti-loosening device according to claim 8, characterized in that, The outer surfaces of the end cap (602) and / or the housing (601) are made of transparent material.

10. The intelligent early warning and anti-loosening device according to claim 8, characterized in that, The end cap (602) and the housing (601) are fastened together.

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