Anti-falling bolt structure

Abstract

The present application relates to bolt connection structure technical field, especially to a kind of anti-falling bolt structure.The anti-falling bolt structure, including bolt and nut, washer assembly is equipped between bolt and nut, nut is tightened on bolt and cooperates with washer assembly to clamp the fastening member on bolt, washer assembly is equipped with anti-rotation structure between nut;Bolt bottom is equipped with ratchet gear assembly to connect nut with bolt, the force that nut rotates in loosening direction is transmitted to bolt and washer assembly by ratchet gear assembly and anti-rotation structure, the force that bolt and washer assembly balance nut rotates in the direction of unclamping;Bolt is filled with lubricating grease and is equipped with lubricating hole on thread, lubricating grease flows to bolt.The anti-falling bolt structure presented in the present application prevents nut from rotating in loosening direction on screw rod by the joint action of anti-rotation structure and ratchet gear assembly, reduces bolt loosening.Lubricating grease is filled in bolt and lubricating hole is used to carry out rust protection to bolt, to prevent rust.

Description

Technical Field

[0001] This invention relates to the field of bolt connection structure technology, and in particular to a bolt structure that prevents loosening. Background Technology

[0002] In industrial manufacturing, bolts are essential components used to assemble devices according to their structure. They are the preferred tool for connecting various parts and are widely used in machinery, power equipment, ships, vehicles, water conservancy projects, and oil fields. To improve the stability and tightness of bolted connections, bolts are often used in conjunction with nuts and washers. However, in existing technologies, after bolts, nuts, and washers are used to fix the device together, during production, the bolt structure and equipment often vibrate due to mechanical operation or impacts, causing the bolt and nut connection to gradually loosen or even fall off. This results in significant economic losses and serious safety hazards. Furthermore, bolt structures are often exposed to the elements for extended periods, frequently corroding due to harsh environments, which reduces the connection strength. Therefore, to address these shortcomings, an anti-loosening bolt is proposed. Summary of the Invention

[0003] (a) Technical problems to be solved To address the shortcomings of existing technologies, this invention provides an anti-loosening bolt, which solves the problem that existing bolt structures become loose and fall off due to equipment vibration after connection; it also solves the problem that bolt mechanisms are prone to corrosion under the influence of the surrounding environment, leading to a reduction in the connection strength of the bolt structure.

[0004] (II) Technical Solution To solve the above problems, the present invention provides an anti-loosening bolt, comprising: The bolt, nut, and washer assembly are provided. The washer assembly and nut are fitted onto the bolt, with the washer assembly located between the nut and the bolt. An anti-rotation structure is provided between the washer assembly and the nut. After the nut is tightened, the top of the washer assembly contacts the bottom surface of the nut to prevent the nut from rotating and falling off in the direction of disengagement. A ratchet drive assembly is provided at the bottom of the bolt, which connects the bolt and the nut. The ratchet drive assembly balances the force of the nut loosening and rotating outward through the connection with the bolt, preventing the nut from loosening and falling off. The bolt includes a threaded rod. The bolt is filled with grease and has several lubrication holes evenly distributed at the thread protrusions. The grease protects the threads through the lubrication holes. The lower surface of the bolt head has uniform anti-slip grooves.

[0005] Preferably, the bottom surface of the gasket assembly is provided with uniform teeth, the upper surface of the gasket assembly is provided with uniform forward helical teeth, and the lower surface of the nut is provided with uniform reverse helical teeth. The forward and reverse helical teeth are inclined in opposite directions. After the reverse helical teeth mesh downward with the forward helical teeth, they prevent the nut from rotating in the loosening direction.

[0006] Preferably, the gasket assembly includes a gasket base and a gasket top seat, the gasket top seat being located above the gasket base, and the bottom surface of the gasket base having uniformly spaced teeth; the forward oblique teeth are located on the upper surface of the gasket top seat and contact the nut, and the gasket base and the gasket top seat are fixedly connected.

[0007] Preferably, a buffer spring is provided between the gasket base and the gasket top seat, and the buffer spring is spring-shaped; both the upper and lower surfaces of the buffer spring are provided with locking teeth evenly distributed in the circumferential direction; the upper surface of the gasket base is provided with a first locking groove, and the lower surface of the gasket top seat is provided with a second locking groove; both the first and second locking grooves cooperate with the locking teeth, and the buffer spring achieves a fixed connection between the gasket base and the gasket top seat by engaging the locking teeth with the first and second locking grooves.

[0008] Preferably, the ratchet drive assembly includes a connecting frame assembly and a ratchet mechanism. The end of the screw is provided with a ratchet groove, and the ratchet mechanism is installed in the ratchet groove. Each of the left and right ends of the connecting frame assembly is provided with a vertical connecting rod, and the connecting component assembly is provided with a guide rod parallel to the connecting rod in the middle. The guide rod is inserted downward into the ratchet mechanism, and the two connecting rods are inserted downward into the left and right ends of the nut and fixedly connected to the nut. The ratchet mechanism cooperates with the connecting frame assembly to allow the nut to rotate only in the tightening direction.

[0009] Preferably, a countersunk hole is provided on the bottom surface of the nut at the position corresponding to the connecting rod, and a countersunk screw is provided in the countersunk hole. The bottom end of the countersunk screw is screwed upward into the bottom end of the connecting rod to fix the connecting rod and the nut in place.

[0010] Preferably, the top end of the connecting rod is connected to a crossbar to form a U-shape, and the end of the guide rod is connected to the middle position of the crossbar, with the same direction as the connecting rod; multiple guide strips are evenly provided on the surface of the guide rod along the circumference.

[0011] Preferably, the ratchet mechanism has an end cap at the top, which is fixedly connected to the end of the screw to fix the ratchet mechanism. The end cap has a through hole in the middle, through which the guide rod passes downward and is inserted into the ratchet mechanism.

[0012] Preferably, the ratchet mechanism includes a ratchet base and a rotating assembly. The rotating assembly is located inside the ratchet base, and the top of the inner wall of the ratchet base has evenly distributed locking teeth along the circumference. The outer wall of the rotating assembly has a plurality of locking blocks evenly distributed along the circumference at positions corresponding to the locking teeth. The top of each locking block is an inclined surface and engages with the locking teeth to allow the rotating assembly to rotate unidirectionally within the ratchet base.

[0013] Preferably, the rotating assembly includes a rotating seat and a snap-fit ​​block. The outer wall of the rotating seat is provided with a snap-fit ​​block groove corresponding to the snap-fit ​​block. The snap-fit ​​block is placed in the snap-fit ​​block groove, and a spring sheet is provided inside the snap-fit ​​block on the inner side of the snap-fit ​​block. The center of the rotating seat is provided with a vertically penetrating slide groove, and the shape of the slide groove corresponds to the shape of the guide rod and the guide strip.

[0014] Preferably, the outer wall of the ratchet base is provided with a plurality of snap-fit ​​ears evenly distributed along the circumference, and the outer wall of the ratchet groove is provided with ear grooves corresponding to the snap-fit ​​ears.

[0015] Preferably, the guide rod extends downward through the ratchet drive assembly into the screw, and a relief hole is provided at the center of the screw below the ratchet groove. The diameter of the relief hole is the same as the maximum diameter of the guide rod. The relief hole is filled with grease, and the lubrication holes on the threads are all connected to the relief hole.

[0016] (III) Beneficial Effects The anti-loosening bolt structure provided by this invention prevents the nut from rotating and falling off in the direction of disengagement by providing an anti-rotation structure between the washer assembly and the nut. Simultaneously, a ratchet transmission assembly connects the bolt and nut, balancing the outward rotational force of the nut. Under the combined action of these two components, the nut is prevented from rotating along the loosening direction on the bolt during operation, thereby reducing the occurrence of loosening in the bolt connection structure and improving the stability of the bolt connection. Furthermore, by filling the bolt with grease and connecting it to the lubrication hole on the thread, rust protection is provided for the bolt during operation, preventing it from rusting. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the anti-loosening bolt structure of the present invention; Figure 2 This is a disassembly diagram of the anti-loosening bolt structure of the present invention; Figure 3 This is a diagram of the bolt structure of the anti-loosening bolt structure of the present invention; Figure 4 for Figure 3 Enlarged view of point A in the middle; Figure 5 This is a schematic diagram of the gasket assembly structure of the anti-loosening bolt structure of the present invention; Figure 6 This is an inverted structural diagram of the gasket assembly of the anti-loosening bolt structure of the present invention; Figure 7 This is a diagram showing the inverted nut structure of the anti-loosening bolt structure of the present invention; Figure 8 This is a schematic diagram of the ratchet transmission assembly structure of the anti-loosening bolt structure of the present invention; Figure 9 This is a schematic diagram of the connecting frame assembly structure of the anti-loosening bolt structure of the present invention; Figure 10 This is a schematic diagram of the ratchet mechanism structure of the anti-loosening bolt structure of the present invention; Figure 11 This is a schematic diagram of the rotating component structure of the anti-loosening bolt structure of the present invention.

[0018] Among them, 1. Bolt; 11. Screw; 12. Thread; 121. Lubrication hole; 13. Ratchet groove; 131. Ear groove; 132. Clearance hole; 2. Gasket assembly; 21. Gasket base; 211. First snap-fit ​​groove; 22. Buffer spring; 221. Snap-fit ​​thread; 23. Gasket top seat; 231. Second snap-fit ​​groove; 232. Forward helical tooth; 3. Nut; 31. Reverse helical tooth; 32. Countersunk through hole; 4. Ratchet drive assembly; 41, Connecting frame assembly; 411, Connecting rod; 412, Crossbar; 413, Guide rod; 4131, Guide bar; 42, Ratchet mechanism; 421, Ratchet base; 4211, Snap-fit ​​ear; 4212, Snap-fit ​​tooth; 422, Rotating assembly; 4221, Rotating seat; 4222, Snap-fit ​​block; 4223, Spring plate; 4224 Snap-fit ​​block groove; 4225, Slide groove; 43, End cap. Detailed Implementation

[0019] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0020] In the description of this invention, it is necessary to understand that the orientation or positional relationship indicated by terms such as "upper", "lower", "inner", "outer", "top", and "bottom" are based on the orientation or positional relationship shown in the accompanying drawings. The purpose is only to facilitate the description of this invention and to simplify the description. It is not intended to indicate or imply that the component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation of this invention.

[0021] like Figure 1-11As shown, this invention provides an anti-loosening bolt structure, comprising: a bolt 1, a nut 3, and a washer assembly 2. The washer assembly 2 and the nut 3 are fitted onto the bolt 1, with the washer assembly 2 located between the nut 3 and the bolt 1. The bolt 1 includes a threaded rod 11 with threads 12. During operation, the bolt 1 and nut 3 are first passed through the device or component to be fixed, and then the nut 3 is installed on the threaded rod 11 and tightened through the threads 12, thereby connecting various devices and components during production. The washer assembly 2 is fitted between the nut 3 and the bolt 1. When the nut 3 is tightened on the threads 12, it simultaneously clamps the fixed device and the washer assembly 2. An anti-rotation structure is provided between the washer assembly 2 and the nut 3. After tightening the nut 3, the top of the washer assembly 2 contacts the bottom surface of the nut 3, preventing the nut 3 from rotating and falling off in the uncoupling direction. During operation, the gasket assembly 2 is pressed and fixed to the surface of the fixed device by the nut 3 after the nut 3 is tightened. During long-term production operation, the nut 3 will vibrate synchronously with the operation of the device and impacts. When the nut 3 rotates in the direction of disengagement during vibration, the gasket assembly 2 prevents the nut 3 from rotating through the anti-rotation structure, preventing the nut 3 from gradually loosening and disengaging with the vibration of the device, thus improving the stability of the device connection.

[0022] The gasket assembly 2 has uniformly spaced teeth on its bottom surface and uniformly spaced forward helical teeth 232 on its upper surface. The nut 3 has uniformly spaced reverse helical teeth 31 on its lower surface. The forward helical teeth 232 and the reverse helical teeth 31 are inclined in opposite directions. The reverse helical teeth 31 engage downwards with the forward helical teeth 232, preventing the nut 3 from rotating in the loosening direction. When the gasket assembly 2 is clamped onto the fixed device by the nut 3, the teeth on the bottom surface of the gasket assembly 2 contact the surface of the fixed object and anchor it to the fixed object, generating friction and thus fixing the gasket assembly 2 to the surface of the fixed object, preventing the gasket assembly 2 from rotating relative to the fixed object. After tightening nut 3, as nut 3 gradually loosens due to synchronous vibration of the device, the forward helical tooth 232 meshes with the reverse helical tooth 31. One side of the tooth surface of the forward helical tooth 232 and the reverse helical tooth 31 is a slope, and the other side is a vertical plane. When nut 3 rotates in the loosening direction, the planes of the forward helical tooth 232 and the reverse helical tooth 31 come into contact with each other, transmitting the power of the nut 3 rotating in the loosening direction to the forward helical tooth 232. Since the washer assembly 2 is already anchored to the surface of the fixed object and cannot rotate, the washer assembly 2 cancels out the power of the nut 3 to rotate through the friction and anchoring force with the surface of the fixed object, thereby preventing the nut 3 from rotating in the loosening direction and resisting the loosening of the nut 3, thus preventing the device from loosening during the connection process due to the operation and vibration of the equipment.

[0023] Under normal circumstances, such as Figure 5-7As shown, the gasket assembly 2 includes a gasket base 21 and a gasket top seat 23. The gasket top seat 23 is located above the gasket base 21, and the bottom surface of the gasket base 21 is provided with uniformly spaced teeth. The forward helical teeth 232 are located on the upper surface of the gasket top seat 23 and contact the nut 3. The gasket base 21 and the gasket top seat 23 are fixedly connected. During operation, the gasket base 21 and the gasket top seat 23 are fixedly formed as a whole to prevent the nut 3 from loosening. During the connection process, the teeth and the forward helical teeth 232 need to constantly balance the tangential force transmitted from the reverse helical teeth 31, which is prone to wear. During inspection and maintenance, the gasket base 21 and the gasket top seat 23 only need to be replaced according to the actual wear condition, reducing maintenance costs and the replacement frequency of the gasket base 21. This avoids the replaced gasket base 21 repeatedly anchoring and damaging the fixed object on the surface, thus extending the service life of the device. When installing nut 3, the reverse helical tooth 31 meshes with the forward helical tooth 232. At this time, nut 3 rotates in the tightening direction. The reverse helical tooth 31 and the forward helical tooth 232 mainly contact each other through the inclined surface. When nut 3 is tightened, the washer assembly 2 will be pushed downward through the inclined surface, which will not affect the tightening of nut 3, so that nut 3 can still be installed normally.

[0024] A buffer spring 22 is provided between the gasket base 21 and the gasket top seat 23. The buffer spring 22 is spring-shaped. Both the upper and lower surfaces of the buffer spring 22 are provided with locking teeth 221 evenly distributed in the circumferential direction. The upper surface of the gasket base 21 is provided with a first locking groove 211, and the lower surface of the gasket top seat 23 is provided with a second locking groove 231. The first locking groove 211 and the second locking groove 231 are both engaged with the locking teeth 211. The buffer spring 22 achieves a fixed connection between the gasket base 21 and the gasket top seat 23 through the engagement of the locking teeth 211 with the first locking groove 211 and the second locking groove 231. After tightening nut 3, the washer top seat 23 gradually clamps the buffer spring 22 and the washer base 21 downwards under the action of nut 3. At this time, the locking teeth 211 on the upper and lower surfaces of the buffer spring 22 fall into the first locking groove 211 and the second locking groove 231 respectively and engage. The buffer spring 22 is in a compressed state under compression and transmits force between the washer base 21 and the washer top seat 23 through the locking teeth 211. During the connection process, countless vibrations are generated during long-term operation. Under vibration, the fixed object may sometimes tend to separate and press the bolt 1 and nut 3 to both sides along the screw 11. At this time, the buffer spring 22 will balance this force under its own elasticity, playing a buffering role between the nut 3 and the fixed object, preventing the nut 3 and the washer assembly 2 from colliding with the fixed object during vibration, which would cause damage to the device, reduce the wear of the device, and extend the service life of the device. At the same time, when the nut 3 is rotated and loosened in the loosening direction, the nut 3 will move upward along the thread 12. At this time, the buffer spring 22 will push the washer top seat 23 upward under its own elasticity so that the forward helical tooth 232 and the reverse helical tooth 31 will resume the meshing state, and re-realize the resistance to the movement trend of the nut, so that the device can maintain the working state of preventing the nut 3 from loosening and disengaging, thereby improving the working efficiency of the device.

[0025] It should be noted that the lower surface of the head of the bolt 1 is provided with uniform anti-slip grooves. After the nut 3 is tightened and presses against the fixed part, the lower surface of the head of the bolt 1 on the other side of the fixed part comes into contact with the surface of the fixed object. After the anti-slip grooves come into contact with the surface of the fixed object, the friction between the head of the bolt 1 and the fixed object will increase, thereby preventing the head of the bolt 1 from rotating on the surface of the fixed object and preventing the device from loosening due to the rotation of the bolt 1.

[0026] like Figure 3-4As shown, to prevent the device from being corroded by the surrounding environment during long-term operation, thus reducing its strength, the bolt 1 is filled with grease, and several lubrication holes 121 are evenly provided at the protrusion of the thread 12. The grease protects the thread 12 through the lubrication holes 121. During operation, the grease in the bolt 1 flows out through the lubrication holes 121 onto the thread 12, thus contacting the thread 12 and the nut 3 and washer assembly 2 mounted on the thread 12, forming a thin film on their surface. This prevents the thread 12 and the components mounted on the thread 12 from being corroded by the surrounding environment, thereby improving the connection strength of the device and extending its service life.

[0027] like Figure 8-11 As shown, a ratchet drive assembly 4 is provided at the bottom of the bolt 1. The ratchet drive assembly 4 connects the bolt 1 and the nut 3. Through the connection with the bolt 1, it balances the force of the nut 3 rotating outwards when loosened, preventing the nut 3 from loosening and falling off. The ratchet drive assembly 4 is fixed to the bottom of the bolt 1 and connected to the nut 3. It transmits the force of the nut 3 rotating in the loosening direction to the bolt 1 and the ratchet drive assembly 4 and balances it, thus cooperating with the washer assembly 2 to prevent the nut 3 from loosening. After the ratchet drive assembly 4 and the washer assembly 2 cooperate, they jointly prevent the nut 3 from loosening, each bearing a portion of the force of the nut 3 rotating in the loosening direction. This improves the anti-loosening performance of the device while reducing the load on the ratchet drive assembly 4 and the washer assembly 2 during the anti-loosening process, reducing wear and extending the service life of the device.

[0028] The ratchet drive assembly 4 includes a connecting frame assembly 41 and a ratchet mechanism 42. The end of the screw 11 has a ratchet groove 13, and the ratchet mechanism 42 is installed within the ratchet groove 13. The connecting frame assembly 41 has a vertical connecting rod 411 at each of its left and right ends, and a guide rod 413 parallel to the connecting rods 411 is provided in the middle of the connecting assembly 41. The guide rod 413 is inserted downwards into the ratchet mechanism 42, and the two connecting rods 411 are inserted downwards into the left and right ends of the nut 3 and fixedly connected to it. The ratchet mechanism 42 cooperates with the connecting frame assembly 41 to allow the nut 3 to rotate only in the tightening direction. After the ratchet mechanism 42 is installed in the ratchet groove 13, when the ratchet mechanism 42 is subjected to force, it transmits the force to the screw 11 to balance the pressure. After the two connecting rods 411 of the connecting frame assembly 41 are fixedly connected to the nut 3, when the nut 3 rotates, it will drive the connecting frame assembly 41 through the connecting rods 411. The connecting frame assembly 41 transmits the rotational force from the nut 3 to the screw 11 through the ratchet mechanism 42 via the guide rod 413. The rotational force on the screw 11 is balanced by the friction between the anti-slip groove of the bolt head and the surface of the fixed object, thereby preventing the nut 3 from rotating and resisting the loosening and falling off of the nut 3. In order to improve the connection strength between the nut 3 and the connecting rod 411, a countersunk through hole 32 is usually provided on the bottom surface of the nut 3 corresponding to the position of the connecting rod 411. A countersunk screw is provided in the countersunk through hole 32. The bottom end of the countersunk screw is screwed upward into the bottom end of the connecting rod 411 to fix the connecting rod 411 and the nut 3. The connecting rod 11 and the countersunk screw clamp and fix the nut 3 from the top and bottom, thereby achieving a fixed connection between the connecting rod 411 and the nut 3. When the nut 3 rotates under vibration, the connecting rod 411 will rotate synchronously with the nut. Similarly, when the connecting rod 11 is rotated, it can drive the nut 3 to rotate synchronously.

[0029] The connecting rods 411 are typically connected in a U-shape by a crossbar 412. The end of the guide rod 413 is connected to the middle of the crossbar 412, and its direction is the same as that of the connecting rods 411. Multiple guide strips 4131 are evenly distributed circumferentially on the surface of the guide rod 413. After the guide rod 413 is inserted into the ratchet mechanism 42, the guide strips 4131 extend on the surface of the guide rod 413 and contact the ratchet mechanism 42. The rotational force from the nut 3 on the connecting rod 411 is transmitted to the guide rod 413 through the crossbar 412. The guide rod 413 then transmits the force to the ratchet mechanism 42 and the bolt 1 through the guide strips 4131, thereby achieving a balance of the rotational force of the nut 3. The ratchet mechanism 42 has an end cap 43 at its top, which is fixedly connected to the end of the screw 11 to fix the ratchet mechanism 42. The end cap 43 has a through hole in the middle, through which the guide rod 413 passes downwards and is inserted into the ratchet mechanism 42. The end cap 43 secures the ratchet mechanism 42 inside the screw 11 to prevent the ratchet mechanism 42 from falling out of the screw 11 during operation and causing the device to fail.

[0030] It should be noted that the ratchet mechanism 42 includes a ratchet base 421 and a rotating assembly 422. The rotating assembly 422 is located inside the ratchet base 421. Engaging teeth 4212 are evenly distributed circumferentially at the top of the inner wall of the ratchet base 421. Multiple engaging blocks 4222 are evenly distributed circumferentially at positions corresponding to the engaging teeth 4212 on the outer wall of the rotating assembly 422. The top of each engaging block 4222 is inclined and engages with the engaging teeth 4212, allowing the rotating assembly 422 to rotate unidirectionally within the ratchet base 421. The ratchet base 421, as a fixed part of the ratchet mechanism 42, is installed in the ratchet groove 13. When subjected to force, the ratchet base 421 transmits the force to the screw 11 to balance the force. The rotating assembly 422 is located inside the ratchet base 421 and contacts the locking teeth of the ratchet base 421 through the locking block 4222. Normally, the left and right sides of the locking teeth 4212 and the locking block 4222 are inclined planes on one side and radial planes on the other side. The locking block 4222 is connected to the guide rod 413 and rotates synchronously with the guide rod 413. When the nut 3 rotates in the loosening direction, part of the rotational force is transmitted to the rotating assembly 422 through the guide rod 413. At this time, the force of the locking teeth 4212 and the locking block 4222 acts on the plane of the meshing point. The locking teeth 4212 prevent the locking block 4222 from continuing to rotate, thereby preventing the guide rod 413 and the nut 3 from continuing to rotate in the loosening direction, thus achieving the anti-disengagement work of the nut 3.

[0031] like Figure 11As shown, the rotating assembly 422 includes a rotating base 4221 and a locking block 4222. A locking block groove 4224 is provided on the outer wall of the rotating base 4221 corresponding to the locking block 4222. The locking block 4222 is placed within the locking block groove 4224, and a spring sheet 4223 is provided inside the locking block 4222 within the locking block groove 4224. The spring sheet 4223 provides support and reset for the locking block 4222 within the locking block groove 4224. When the nut 3 is tightened in the tightening direction, the guide rod 413 transmits the force it receives to the rotating seat 4221. The rotating seat 4221 rotates synchronously with the force of the guide rod 413. At this time, the locking block 4222 and the locking tooth 4212 mesh, and the force between them acts on the inclined surface. The locking tooth 4212 pushes the locking block 4222 inward into the locking block groove 4224, reducing the contact area between the locking tooth 4212 and the locking block 4222 until the two inclined surfaces separate. Then, the rotating seat 4221 rotates with the guide rod 413 in the ratchet base 421. During the tightening of nut 3, under the elastic force of spring plate 4223, the locking block 4222 will pop out of the locking block groove 4224 after passing through each locking tooth 4212 and re-engage with the next locking tooth 4212. This process of pushing and popping the locking block 4222 into and out of the locking block groove 4224 is repeated continuously. It automatically enters the working state without requiring any further operation, and can balance the force transmitted from nut 3 in the direction of loosening, preventing nut 3 from loosening or falling off. The rotating seat 4221 has a vertically penetrating groove 4225 at its center, the shape of which corresponds to the shape of guide rod 413 and guide strip 4131. The guide rod 413 passes through the end cover 42 and is inserted into the slide groove 4225. The guide bar 4131 matches the shape of the slide groove 4225 and contacts the inner wall of the slide groove 4225. When the guide rod 413 rotates, the guide bar 4131 will apply the rotational force to the inner wall of the slide groove 4225, thereby driving the rotating seat 4221 to rotate synchronously.

[0032] To improve the stability of the ratchet base 421 and the bolt 1, multiple locking ears 4211 are evenly provided circumferentially on the outer wall of the ratchet base 421, and the outer wall of the ratchet groove 13 is provided with ear grooves 131 corresponding to the locking ears 4211. After the ratchet base 421 is installed in the ratchet groove 13, the locking ears 4211 fall into the ear grooves 131. When the ratchet base 421 rotates under force, the locking ears 4211 contact the inner wall of the ear grooves 131 to hold and fix the position of the ratchet base 421, and transmit the force on the ratchet base 421 to the bolt 1. Since the position of nut 3 on screw 11 is determined by the thickness of the connected part, to ensure that guide rod 413 can be inserted into slide groove 4225 at any height of nut 3, guide rod 413 usually extends downward through ratchet mechanism 42 into screw 11. A clearance hole 132 is provided at the center of screw 11 below ratchet groove 13, and the diameter of the clearance hole is the same as the maximum diameter of guide rod 413. After guide rod 413 is inserted into slide groove 4225, any excess length will continue to extend downward into clearance hole 132, ensuring normal operation of the device without affecting the rotation of guide rod 413 under force.

[0033] The relief hole 132 is filled with grease, and the lubrication holes 121 on the thread 12 are all connected to the relief hole 132. During operation, the grease in the relief hole 132 will gradually flow out through the lubrication holes 121 and form a thin film on one side of the thread 12. This prevents the connection of the thread 12 from directly contacting the surrounding air or moisture, which could cause the device to rust. This avoids the reduction in the connection strength of the device due to rust and improves the stability of the device.

[0034] In this invention, the nut 3 is prevented from rotating in the loosening direction by the combined action of the washer assembly 2 and the ratchet transmission assembly 4, thus achieving the anti-loosening function of the nut 3. The washer assembly 2 mainly relies on the mutual contact of the reverse helical teeth 31 and the forward helical teeth 232 to balance the rotational force transmitted from the nut 3 to the washer assembly 2. During operation, the direction of the thread 12 can be adjusted according to the working needs, and the directions of the forward helical teeth 232 and the reverse helical teeth 31 can be adjusted simultaneously to ensure that the washer assembly 2 can always resist the rotation of the nut 3 in the loosening direction, thereby achieving the anti-loosening function of the nut 3. Similarly, in the ratchet transmission assembly 4, the inclined surface direction of the locking block 4223 and the locking teeth 422 also needs to be adjusted with the direction of the thread 12 so that the ratchet transmission assembly 4 can prevent the nut 3 from rotating in the loosening direction.

[0035] The anti-loosening bolt structure provided by this invention solves the problem that existing bolt structures will loosen and fall off due to equipment vibration after connection; it also solves the problem that the bolt mechanism is prone to corrosion under the influence of the surrounding environment, which reduces the connection strength of the bolt structure. The specific operation process is as follows: Step 1: Pass the bolt through the connecting hole of the connected parts, put the washer assembly and nut on the bolt, and tighten the nut. During the tightening process, the nut gradually tightens on the thread and presses down on the washer assembly. The washer assembly cooperates with the fixed parts to press them onto the bolt. The retaining teeth on the bottom surface of the washer assembly and the anti-slip groove on the head of the nut clamp the surfaces on both sides of the fixed parts, fixing the position of the washer assembly and nut on the surface of the connected parts.

[0036] Step Two: During operation, as the connected parts vibrate, the nut gradually rotates in the loosening direction. The ratchet drive assembly and the washer assembly work together to balance the force causing the nut to rotate in the loosening direction. In this process, the force causing the nut to rotate in the loosening direction is divided into two parts, which are balanced by the ratchet drive assembly and the washer assembly respectively. The ratchet drive assembly transmits the rotational force to the ratchet mechanism through the connecting frame assembly. The rotating assembly, within the ratchet base, contacts the locking teeth through the locking block, transmitting the nut's rotational force to the screw. The friction between the bolt head and the connected parts balances the nut's rotational force. Similarly, the washer assembly transmits the nut's rotational force to itself through the meshing of forward and reverse helical teeth. The washer assembly balances the rotational force transmitted by the nut through the friction between the locking teeth at its bottom and the surface of the connected parts, working in conjunction with the ratchet drive assembly to prevent the nut from rotating in the loosening direction and thus preventing the nut from coming loose.

[0037] Step 3: During the anti-rotation process, grease is filled into the countersunk holes of the bolts to protect the bolts and threads from rust. In this process, the grease flows out along the lubrication holes and onto the threads to protect the bolts and nuts, preventing the device from directly contacting the surrounding air and moisture, and thus preventing corrosion.

[0038] In this invention, the U-shaped connecting frame assembly is connected to the nut to form a handle-like structure. When installing and tightening the nut, the operator can directly turn the connecting frame assembly by hand to rotate the nut and tighten it, thus reducing the installation difficulty of the device.

[0039] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A structure for preventing bolts from falling off, characterized in that, include: The assembly comprises a bolt (1), a nut (3), and a washer assembly (2). The washer assembly (2) and the nut (3) are fitted onto the bolt (1), and the washer assembly (2) is located between the nut (3) and the bolt (1). An anti-rotation structure is provided between the washer assembly (2) and the nut (3). After tightening the nut (3), the top of the washer assembly (2) contacts the bottom surface of the nut (3) to prevent the nut (3) from rotating and falling off in the disengagement direction. A ratchet drive assembly (4) is provided at the bottom of the bolt (1). The ratchet drive assembly (4) drives the bolt... The bolt (1) is connected to the nut (3). The connection between the bolt (1) and the nut (3) balances the force of the nut (3) to loosen and rotate outward, preventing the nut (3) from loosening and falling off. The bolt (1) includes a screw (11) with a thread (12) on it. The bolt (1) is filled with grease and has a number of lubrication holes (121) evenly distributed at the protrusion of the thread (12). The grease protects the thread (12) through the lubrication holes (121). The lower surface of the head of the bolt (1) is provided with a uniform anti-slip groove.

2. The anti-loosening bolt structure according to claim 1, characterized in that, The bottom surface of the gasket assembly (2) is provided with uniform teeth, the upper surface of the gasket assembly (2) is provided with uniform forward helical teeth (232), and the lower surface of the nut (3) is provided with uniform reverse helical teeth (31). The forward helical teeth (232) and the reverse helical teeth (31) are inclined in opposite directions. After the reverse helical teeth (31) mesh downward with the forward helical teeth (232), they prevent the nut (3) from rotating in the loosening direction.

3. The anti-loosening bolt structure according to claim 2, characterized in that, The gasket assembly (2) includes a gasket base (21) and a gasket top seat (23). The gasket top seat (23) is located above the gasket base (21). The bottom surface of the gasket base (21) is provided with uniform teeth. The forward helical teeth (232) are located on the upper surface of the gasket top seat (23) and contact the nut (3). The gasket base (21) and the gasket top seat (23) are fixedly connected.

4. The anti-loosening bolt structure according to claim 3, characterized in that, A buffer spring (22) is provided between the gasket base (21) and the gasket top seat (23). The buffer spring (22) is spring-shaped. The upper and lower surfaces of the buffer spring (22) are provided with snap-fit ​​teeth (221) evenly distributed in the circumferential direction. The upper surface of the gasket base (21) is provided with a first snap-fit ​​groove (211), and the lower surface of the gasket top seat (23) is provided with a second snap-fit ​​groove (231). The first snap-fit ​​groove (211) and the second snap-fit ​​groove (231) are both engaged with the snap-fit ​​teeth (211). The buffer spring (22) achieves a fixed connection between the gasket base (21) and the gasket top seat (23) by engaging the snap-fit ​​teeth (211) with the first snap-fit ​​groove (211) and the second snap-fit ​​groove (231).

5. The anti-loosening bolt structure according to claim 4, characterized in that, The ratchet drive assembly (4) includes a connecting frame assembly (41) and a ratchet mechanism (42). The end of the screw (11) is provided with a ratchet groove (13), and the ratchet mechanism (42) is installed in the ratchet groove (13). The connecting frame assembly (41) has a vertical connecting rod (411) at each of its left and right ends. The connecting component assembly (41) has a guide rod (413) in the middle that is parallel to the connecting rod (411). The guide rod (413) is inserted downward into the ratchet mechanism (42). The two connecting rods (411) are inserted downward into the left and right ends of the nut (3) and are fixedly connected to the nut (3). The ratchet mechanism (42) cooperates with the connecting frame assembly (41) so that the nut (3) can only rotate in one direction in the tightening direction.

6. The anti-loosening bolt structure according to claim 5, characterized in that, The bottom surface of the nut (3) is provided with a countersunk through hole (32) corresponding to the position of the connecting rod (411). A countersunk screw is provided in the countersunk through hole (32). The bottom end of the countersunk screw is screwed upward into the bottom end of the connecting rod (411) to fix the connecting rod (411) and the nut (3) in place.

7. The anti-loosening bolt structure according to claim 6, characterized in that, The top end of the connecting rod (411) is connected to the crossbar (412) to form a U-shape. The end of the guide rod (413) is connected to the middle position of the crossbar (412) and the direction is the same as that of the connecting rod (411). The surface of the guide rod (413) is uniformly provided with multiple guide strips (4131) along the circumference.

8. The anti-loosening bolt structure according to claim 7, characterized in that, The ratchet mechanism (42) has an end cap (43) at the top. The end cap (43) is fixedly connected to the end of the screw (11) to fix the ratchet mechanism (42). The end cap (43) has a through hole in the middle. The guide rod (413) passes through the through hole and is inserted into the ratchet mechanism (42).

9. The anti-loosening bolt structure according to claim 8, characterized in that, The ratchet mechanism (42) includes a ratchet base (421) and a rotating assembly (422). The rotating assembly (422) is located inside the ratchet base (421). The top of the inner wall of the ratchet base (421) has evenly distributed locking teeth (4212) along the circumferential direction. The outer wall of the rotating assembly (422) is provided with a plurality of locking blocks (4222) at positions corresponding to the locking teeth (4212) along the circumferential direction. The top of the locking block (4222) is an inclined surface and meshes with the locking teeth (4212) to make the rotating assembly (422) rotate unidirectionally inside the ratchet base (421).

10. The anti-loosening bolt structure according to claim 9, characterized in that, The rotating assembly (422) includes a rotating seat (4221) and a snap-fit ​​block (4222). The outer wall of the rotating seat (4221) is provided with a snap-fit ​​block groove (4224) corresponding to the snap-fit ​​block (4222). The snap-fit ​​block (4222) is placed in the snap-fit ​​block groove (4224). A spring sheet (4223) is provided inside the snap-fit ​​block (4222) on the inner side of the snap-fit ​​block (4222) in the snap-fit ​​block groove (4224). The center of the rotating seat (4221) is provided with a vertically penetrating slide groove (4225). The shape of the slide groove (4225) corresponds to the shape of the guide rod (413) and the guide strip (4131).

11. The anti-loosening bolt structure according to claim 10, characterized in that, The ratchet base (421) has a plurality of snap-fit ​​ears (4211) evenly distributed along the circumference on the outer wall, and the ratchet groove (13) has ear grooves (131) corresponding to the snap-fit ​​ears (4211) on the outer wall.

12. The anti-loosening bolt structure according to claim 11, characterized in that, The guide rod (413) extends downward through the ratchet drive assembly (4) and into the screw (11). The screw (11) below the ratchet groove (13) has a relief hole (132) at its center. The diameter of the relief hole is the same as the maximum diameter of the guide rod (413). The relief hole (132) is filled with grease and the lubrication holes (121) on the thread (12) are all connected to the relief hole (132).

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