Locking device for locking ring

Abstract

The utility model relates to lock ring with anti -loose locking device technical field, concretely for lock ring with anti -loose locking device, including lock ring body, anti -loose ring, elastic compression subassembly and locking adjusting assembly, realize the circumferential anti -rotation through the tooth shape of anti -loose ring and lock ring body and engage, elastic subassembly provides the continuous axial pre -tightening force compensation gap, locking bolt realizes radial rigid locking, three -fold cooperation makes anti -loose failure probability to fall below 1%, the elastic deformation of disc spring can compensate the axial displacement caused by vibration, temperature change, pre -tightening force attenuation rate reduces, service life prolongs, through the screwing depth of locking bolt direct perception judges locking degree, cooperate with the orientation structure and ensure that anti -loose ring positioning is accurate, and the installation time is shortened to 1 / 3 of traditional lock ring, adapts to the shaft class spare (realizes through replacing anti -loose ring) of different diameter, has no easy -to -break electronic component, and key components adopt high -strength alloy material, and the impact resistance, wear resistance can work stably under -40 DEG C~120 DEG C environment.

Description

Technical Field

[0001] This utility model relates to the technical field of anti-loosening locking devices for lock rings, specifically an anti-loosening locking device for lock rings. Background Technology

[0002] As is well known, locking rings are a key component in mechanical connections and are widely used for axial positioning and circumferential fixing of shaft parts.

[0003] Traditional locking rings rely on a single frictional force for locking. Under conditions of continuous vibration, impact, or temperature changes, they have the following drawbacks: locking is achieved solely through the interference fit between the locking ring and the shaft or by bolt preload. In vibration environments, gaps are easily generated, leading to relative rotation. Deformation of parts caused by temperature changes or long-term use cannot be compensated for by traditional structures. The preload decays rapidly, and the degree of locking depends on manual experience. Over-tightening can easily cause the locking ring to deform, while insufficient tightening will not prevent loosening. Furthermore, there is a lack of intuitive criteria for judging the locking status. Once loosened, the entire ring needs to be disassembled and replaced, which, especially in large equipment, affects production efficiency. Summary of the Invention

[0004] In order to overcome the problems of poor anti-loosening reliability, insufficient compensation capacity, difficult installation and adjustment, and high maintenance cost of existing anti-loosening locking devices for lock rings, this utility model provides an anti-loosening locking device for lock rings with good anti-loosening reliability, sufficient compensation capacity, simple installation and adjustment, and low maintenance cost.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a locking device for locking rings, comprising: The locking ring body is a circular ring structure with an annular groove on the inner side along the axial direction and a radially through threaded hole on the outer side wall. The anti-loosening ring is sleeved in the annular groove inside the locking ring body. The inner ring of the anti-loosening ring is provided with anti-slip teeth, and the outer ring is in clearance fit with the inner wall of the annular groove. An elastic clamping assembly, wherein the elastic clamping assembly is disposed between the anti-loosening ring and the end wall of the annular groove, includes at least two elastic elements evenly distributed circumferentially, one end of each elastic element abutting against the end wall of the annular groove, and the other end abutting against the end face of the anti-loosening ring; and A locking adjustment assembly includes a locking bolt and an adjusting shim. The locking bolt passes through a threaded hole in the locking ring body and its end abuts against the outer wall of the anti-loosening ring. The adjusting shim is sleeved between the locking bolt and the locking ring body.

[0006] Preferably, the inner wall of the annular groove of the locking ring body is provided with circumferentially distributed positioning teeth, and the outer ring of the anti-loosening ring is provided with corresponding meshing teeth. The positioning teeth and the meshing teeth mesh with each other, and the tooth direction is inclined along the axial direction of the locking ring body. The axial length of the anti-loosening ring is less than the depth of the annular groove. The anti-loosening ring can slide along the axial direction of the annular groove, and the sliding direction is consistent with the expansion and contraction direction of the elastic element.

[0007] Furthermore, the elastic element of the elastic clamping assembly is a disc spring, the spring axis is parallel to the locking ring body axis, and an isolation pad is provided between adjacent disc springs, the surface of the isolation pad is parallel to the end face of the anti-loosening ring; In its natural state, the disc spring pushes the anti-loosening ring to move away from the end wall of the annular groove, so that the meshing teeth of the anti-loosening ring and the positioning teeth of the annular groove are engaged.

[0008] Furthermore, the locking bolt of the locking adjustment assembly is arranged radially along the locking ring body, the bolt axis is perpendicular to the locking ring body axis, and the bolt end has a spherical structure; The outer wall of the anti-loosening ring is provided with a hemispherical groove, and the end of the spherical surface fits into the hemispherical groove. The groove depth is greater than 1 / 2 of the radius of the spherical surface.

[0009] In a further embodiment, the anti-slip teeth of the inner ring of the anti-loosening ring are triangular teeth, with the tooth tips facing the axial side of the locking ring body, and the tooth surface forming an angle with the axis of the anti-loosening ring; The positioning teeth of the locking ring body and the meshing teeth of the anti-loosening ring are both trapezoidal teeth, with a buffer gap between the tooth tip and the tooth root.

[0010] Based on the aforementioned scheme, the threaded hole of the locking ring body is a fine thread that mates with the thread of the locking bolt. A countersunk hole is provided at the entrance of the threaded hole, and the adjusting shim is an elastic metal shim with its edge embedded in the countersunk hole. The head of the locking bolt is provided with an internal hex wrench groove, the bottom of the groove is perpendicular to the bolt axis, and the end face of the head is in contact with the surface of the adjusting shim.

[0011] Furthermore, based on the aforementioned scheme, the outer wall of the anti-loosening ring is provided with a guide protrusion along the axial direction, and the inner wall of the annular groove of the locking ring body is provided with a corresponding guide groove. The guide protrusion and the guide groove are slidably engaged, and the length direction of both is parallel to the axis of the locking ring body. The cross-section of the guide ridge is rectangular, which fits with the guide groove with a clearance. The top of the ridge is provided with a limiting boss to prevent the anti-loosening ring from falling out of the annular groove.

[0012] Furthermore, based on the aforementioned scheme, the locking ring body is provided with connecting holes extending radially outward at both ends.

[0013] Beneficial effects This locking ring uses an anti-loosening locking device. The anti-loosening ring and the locking ring body mesh with teeth to achieve circumferential anti-rotation. The elastic component provides continuous axial preload to compensate for the gap, and the locking bolt achieves radial rigid locking. The triple synergy reduces the probability of anti-loosening failure to less than 1%. The elastic deformation of the disc spring can compensate for axial displacement caused by vibration and temperature changes. The preload attenuation rate is reduced and the service life is extended. The locking degree can be intuitively judged by the screw-in depth of the locking bolt. The guide structure ensures accurate positioning of the anti-loosening ring. The installation time is reduced to 1 / 3 of that of traditional locking rings. It is compatible with shaft parts of different diameters (achieved by replacing the anti-loosening ring). There are no easily damaged electronic components. Key components are made of high-strength alloy materials, which are impact-resistant and wear-resistant, and can work stably in environments from -40℃ to 120℃. Attached Figure Description

[0014] Figure 1 This is a side view of the structure of this utility model; Figure 2 This is a schematic diagram of the guide groove of this utility model; Figure 3 This is a schematic diagram of the structure of the elastic clamping assembly of this utility model; Figure 4 This is a schematic diagram of the positioning teeth of this utility model; Figure 5 This is a schematic diagram of the hemispherical groove of this utility model; Figure 6 This is a schematic diagram of the locking adjustment assembly of this utility model.

[0015] In the diagram: 1. Locking ring body; 2. Annular groove; 3. Threaded hole; 4. Anti-loosening ring; 5. Anti-slip teeth; 6. Elastic clamping assembly; 7. Elastic element; 8. Locking adjustment assembly; 9. Locking bolt; 10. Adjusting shim; 11. Positioning teeth; 12. Engaging teeth; 13. Spring; 14. Isolation shim; 15. Hemispherical groove; 16. Countersunk hole; 17. Hex socket wrench groove; 18. Guide protrusion; 19. Guide slide; 20. Limiting boss; 21. Connecting hole. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0017] See Figures 1-6A locking ring anti-loosening device is disclosed. Through a triple collaborative design of "toothed meshing anti-rotation + elastic preload compensation + radial rigid locking", it achieves long-term anti-loosening and reliable locking of shaft parts. The core solution is as follows: the locking ring body 1 serves as the basic load-bearing structure, and the inner annular groove 2 accommodates the anti-loosening ring 4 and the elastic clamping component 6. The anti-loosening ring 4 engages with the shaft body through the inner anti-slip teeth 5 and the outer meshing teeth 12 engage with the positioning teeth 11 of the locking ring body 1 to achieve circumferential anti-rotation. The elastic clamping component 6 provides continuous axial preload to compensate for gaps caused by vibration or temperature changes. The locking adjustment component 8 applies radial pressure through the locking bolt 9 to enhance the anti-loosening effect. The components are precisely connected through sliding fit, toothed meshing, elastic abutment and other methods. This solution solves the problems of poor reliability, insufficient compensation capacity and cumbersome installation and maintenance of traditional locking rings. It is suitable for axial positioning and circumferential fixing of shaft parts (such as motor shafts, transmission shafts, etc.) under vibration, impact or temperature fluctuation conditions.

[0018] First, refer to Figure 1 In this embodiment, the locking ring body 1 is a circular ring structure, forged from No. 45 steel and then heat-treated, with chrome plating for rust prevention. An annular groove 2 (rectangular cross-section) is opened on the inner side along the axial direction. The bottom and wall of the groove are ground to provide sliding space for the anti-loosening ring 4. A through threaded hole 3 (fine thread) is evenly opened on the outer wall along the radial direction for installing the locking bolt 9. A countersunk hole 16 (depth adapted to the thickness of the adjusting shim 10) is machined at the entrance of the threaded hole 3 to ensure that the bolt head does not protrude from the outer wall of the locking ring.

[0019] The inner wall of the annular groove 2 of the locking ring body 1 is machined with positioning teeth 11 (trapezoidal teeth, with the tooth direction inclined along the axial direction) along the circumferential direction. These teeth cooperate with the meshing teeth 12 of the anti-loosening ring 4 to achieve circumferential positioning. One end wall of the annular groove 2 is flat and serves as the support surface of the elastic clamping assembly 6. Both ends of the locking ring body 1 extend outward along the radial direction and are machined with connecting holes 21 (through holes). The locking ring body 1 is fixed in the working position by bolts to connect with external equipment, forming an integral load-bearing foundation.

[0020] Then, refer to Figure 2 In this embodiment, the anti-loosening ring 4 is a circular ring structure, made of 20CrMnTi carburized and quenched, with excellent wear resistance. It is sleeved in the annular groove 2 of the locking ring body 1, with the outer ring and the inner wall of the annular groove 2 in clearance fit (to ensure smooth axial sliding). The axial length is less than the depth of the annular groove 2, and it can slide along the axial direction of the annular groove 2 (the sliding direction is consistent with the extension and contraction direction of the elastic element 7).

[0021] The outer ring of the anti-loosening ring 4 is machined with meshing teeth 12 (trapezoidal teeth, which are adapted to the positioning teeth 11 of the locking ring body 1) along the circumferential direction, leaving a buffer gap (to avoid rigid collision). The tooth direction is consistent with the tilt direction of the positioning teeth 11. When meshing, it forms a one-way anti-rotation pawl structure (only allowing the anti-loosening ring 4 to slide in the pre-tightening direction, and locking in the opposite direction). The inner ring is machined with anti-slip teeth 5 (triangular teeth, with the tooth tip facing the axial side). The tooth surface is at an angle to the axis of the anti-loosening ring 4. When assembled, it meshes with the surface of the shaft, increasing the circumferential friction and preventing the shaft and the anti-loosening ring 4 from rotating relative to each other.

[0022] The outer wall of the anti-loosening ring 4 is machined with a guide protrusion 18 (rectangular cross section) along the axial direction, which slides in conjunction with the guide groove 19 (corresponding rectangular groove) on the inner wall of the annular groove 2 of the locking ring body 1 to ensure that the anti-loosening ring 4 has no circumferential offset when sliding. The top of the guide protrusion 18 is machined with a limiting boss 20 (width greater than the protrusion), which mates with the stepped surface at the end of the annular groove 2 to prevent the anti-loosening ring 4 from coming out of the annular groove 2.

[0023] The anti-loosening ring 4 has a flat end face that abuts against the elastic element 7 of the elastic clamping assembly 6 to receive axial preload. The outer wall is machined with a hemispherical groove 15 corresponding to the position of the locking bolt 9, which fits against the spherical end of the bolt, converting the radial locking force into an axial component force and strengthening the meshing between the anti-loosening ring 4 and the positioning tooth 11.

[0024] Secondly, see Figure 3 In this embodiment, the elastic clamping component 6 is disposed between the anti-loosening ring 4 and the end wall of the annular groove 2, providing continuous axial preload, compensating for gaps and maintaining tooth meshing. The elastic element 7 is a disc spring 13, at least two of which have an axis parallel to the axis of the locking ring body 1. In its natural state, it is in a pre-compressed state, with one end abutting against the end wall of the annular groove 2 and the other end abutting against the end face of the anti-loosening ring 4, pushing the anti-loosening ring 4 to move away from the end wall, so that the meshing teeth 12 and the positioning teeth 11 are tightly engaged.

[0025] An isolation shim 14 (made of brass with a smooth surface) is placed between adjacent disc springs 13. The surface of the shim is parallel to the end face of the anti-loosening ring 4 to ensure that each spring 13 is subjected to uniform force and to avoid failure of the spring 13 due to uneven load. The disc spring 13 has non-linear stiffness characteristics, and a large elastic force can be generated with small deformation, which can effectively compensate for axial clearance caused by vibration, temperature change or long-term use.

[0026] Again, see Figure 6In this embodiment, the locking adjustment component 8 enhances the anti-loosening effect by applying radial pressure, thereby achieving precise adjustment of the locking degree. It is made of 8.8 grade high-strength steel and is set radially along the locking ring body 1. The bolt axis is perpendicular to the axis of the locking ring body 1, and the surface is fine thread (to improve the anti-loosening performance). It is matched with the threaded hole 3 of the locking ring body 1. The bolt end is processed into a spherical structure, which fits against the hemispherical groove 15 on the outer wall of the anti-loosening ring 4 (the groove depth is greater than 1 / 2 of the spherical radius). The contact area is large and the force is uniform, avoiding deformation of the anti-loosening ring 4 caused by local stress concentration.

[0027] The bolt head is machined with an internal hexagonal wrench groove 17 (the bottom of the groove is perpendicular to the bolt axis) to facilitate tool operation. The end face of the head is in contact with the surface of the adjusting shim 10, and the preload is controlled by the tightening torque (no need to overtighten).

[0028] An elastic metal washer (65Mn material, galvanized surface) is fitted between the locking bolt 9 and the locking ring body 1. Its edge is embedded in the countersunk hole 16 of the threaded hole 3 to prevent the washer from shifting. The washer has elastic deformation capability, which can compensate for the gap between the bolt head and the locking ring body 1. At the same time, it generates a rebound force after the bolt is pre-tightened, which enhances the anti-loosening effect of the threaded connection (prevents the bolt from loosening).

[0029] In addition, see Figure 1 In this embodiment, the connecting holes 21 (through holes) at both ends of the locking ring body 1 extend radially outward and are connected to the external flange or equipment by bolts to fix the locking ring body 1 in the working position, ensuring that the overall structure does not shift when subjected to force.

[0030] The positioning tooth 11 and the meshing tooth 12 adopt a trapezoidal tooth design (tooth tip width and tooth root thickness), which is stronger than the triangular tooth and is not easy to cause tooth surface cracking due to excessive force. The anti-slip tooth 5 is a triangular tooth with a sharp tip, which can be embedded in the tiny pits on the shaft surface to increase static friction. It is suitable for working conditions where the shaft surface is not hardened.

[0031] In addition, see Figure 1 In this embodiment, the meshing teeth 12 of the outer ring of the anti-loosening ring 4 engage with the positioning teeth 11 of the annular groove 2 of the locking ring body 1 at an angle, forming a "pawl-ratchet" structure. Under the pre-tightening force of the elastic element 7, the meshing teeth 12 always stick to the positioning teeth 11, preventing the anti-loosening ring 4 from rotating circumferentially relative to the locking ring body 1. The anti-slip teeth 5 of the inner ring of the anti-loosening ring 4 engage with the surface of the shaft, preventing the shaft from rotating relative to the anti-loosening ring 4. The double meshing achieves circumferential rigid fixation of the shaft and the locking ring body 1 (without relative rotation gap).

[0032] In its natural state, the disc spring 13 pushes the anti-loosening ring 4 to move axially, so that the meshing teeth 12 and the positioning teeth 11 are tightly engaged, generating an initial preload. When equipment vibration or temperature changes cause axial clearance, the spring 13 further extends or retracts (compresses or elongates) to compensate for the clearance and maintain the preload, preventing the tooth meshing from loosening.

[0033] The locking bolt 9 is screwed in radially, and the spherical end fits into the hemispherical groove 15 of the anti-loosening ring 4, converting the radial force into an axial component force, pushing the anti-loosening ring 4 to move towards the elastic element 7, increasing the biting force between the meshing teeth 12 and the positioning teeth 11, and compressing the elastic element 7 to store elastic potential energy, forming a composite anti-loosening mode of "rigid locking + elastic compensation".

[0034] The guide protrusion 18 of the anti-loosening ring 4 slides in conjunction with the guide groove 19 of the locking ring body 1 to ensure that the anti-loosening ring 4 has no circumferential offset when sliding axially. The limiting boss 20 abuts against the stepped surface of the annular groove 2 to prevent the anti-loosening ring 4 from sliding out of the annular groove 2 and to ensure structural safety.

[0035] In addition, see Figure 1 In this embodiment, the axial positioning requirements of the motor drive shaft are as follows: the motor drive shaft experiences continuous vibration during operation, and the ambient temperature ranges from -10℃ to 60℃. It is necessary to achieve axial positioning of the drive shaft to prevent axial movement of the shaft and avoid relative circumferential rotation.

[0036] The diameter of the locking ring body 1 is selected to match the drive shaft. The inner ring anti-slip teeth 5 of the anti-loosening ring 4 have a hardness of ≥HRC60 to ensure that they can be embedded in the surface of the drive shaft. The elastic clamping component 6 uses 3 disc springs 13 (evenly distributed in the circumference) to push the anti-loosening ring 4 to generate an initial preload in the natural state. The locking bolt 9 of the locking adjustment component 8 has a fine thread, and the adjusting shim 10 is made of elastic metal.

[0037] After installation, tightening the locking bolt 9 makes the anti-loosening ring 4 meshing teeth 12 and the locking ring body 1 positioning teeth 11 tightly engage, and the anti-slip teeth 5 are embedded in the surface of the drive shaft, initially fixing the axial position of the shaft. When the motor is running, the small axial gap caused by vibration is compensated by the expansion and contraction of the disc spring 13 (the compression of the spring 13 is dynamically adjusted with the vibration), and the preload remains stable without loosening or abnormal noise.

[0038] When the ambient temperature changes (e.g., 60℃ in summer and -10℃ in winter), the difference in thermal expansion and contraction between the locking ring and the shaft is absorbed by the deformation of the elastic element 7, and the tooth meshing is always tight without any gaps. After 6 months of continuous operation, the following was checked: the locking bolt 9 was not loose, the adjusting shim 10 had good elasticity, the meshing teeth 12 and the positioning teeth 11 of the anti-loosening ring 4 had no obvious wear, and the axial movement of the transmission shaft was ≤0.3mm, which meets the working conditions.

[0039] Finally, see Figure 1In this embodiment, the locking ring body 1 and the anti-loosening ring 4 are made of stainless steel (316L), which is suitable for humid or corrosive environments (such as chemical equipment drive shafts) and has a salt spray resistance of ≥1000 hours. The disc spring 13 is made of high-temperature alloy material (Inconel718), which maintains stable elastic performance in the temperature range of -200℃ to 500℃ and is suitable for high-temperature working conditions (such as steam turbine shafts).

[0040] Working principle: The locking ring uses an anti-loosening locking device. When in use, the anti-loosening ring 4 is first put into the annular groove 2 of the locking ring body 1, ensuring that the guide protrusion 18 is embedded in the guide slide groove 19 and the limiting protrusion 20 does not contact the stepped surface of the annular groove 2. The isolation pad 14 and the disc spring 13 (spring 13 in its natural state) are installed between the anti-loosening ring 4 and the end wall of the annular groove 2. At this time, the anti-loosening ring 4 is pushed by the spring 13, and the meshing teeth 12 and the positioning teeth 11 are initially engaged.

[0041] The locking ring body 1 and the anti-loosening ring 4 are fitted onto the shaft to be positioned. The locking ring position is adjusted to the working position. The locking ring body 1 is fixed to the external equipment with bolts through the connecting holes 21 at both ends. The anti-slip teeth 5 of the inner ring of the anti-loosening ring 4 initially contact the surface of the shaft (not fully engaged).

[0042] Using an Allen wrench, tighten the locking bolt 9. The spherical end of the bolt pushes the anti-loosening ring 4 along the guide groove 19 toward the end wall of the annular groove 2, compressing the disc spring 13 (the spring 13 generates elastic force), so that the meshing teeth 12 of the anti-loosening ring 4 and the positioning teeth 11 of the locking ring body 1 are tightly engaged. At the same time, the inner anti-slip teeth 5 are embedded in the surface of the shaft, achieving initial locking.

[0043] Continue to tighten the locking bolt 9 to the preset torque (judged by feel, no torque wrench required). Adjust the shim 10 to generate a rebound force through elastic deformation to prevent the bolt from loosening. At this time, the disc spring 13 is in a compressed state, storing elastic potential energy to provide power for subsequent gap compensation.

[0044] During equipment operation, if axial clearance is generated due to vibration or temperature changes, the disc spring 13 releases elastic potential energy, pushes the anti-loosening ring 4 to move axially to compensate for the clearance, and maintains the meshing state of the meshing teeth 12 and the positioning teeth 11. If a slight circumferential rotation tendency is generated, the inclined tooth meshing generates reverse resistance to prevent rotation.

[0045] When disassembly is required, loosen the locking bolt 9 in the reverse direction. The disc spring 13 pushes the anti-loosening ring 4 to reset, and the meshing teeth 12 and the positioning teeth 11 disengage and engage tightly. The locking ring can then be removed from the shaft. If the anti-loosening ring 4 is worn, it can be replaced separately (without replacing the locking ring body 1), reducing maintenance costs.

[0046] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A locking device for locking rings, characterized in that, include: The lock ring body (1) is a circular ring structure. An annular groove (2) is opened on the inner side of the lock ring body (1) along the axial direction. A radially through threaded hole (3) is provided on the outer side wall of the lock ring body (1). Anti-loosening ring (4), the anti-loosening ring (4) is sleeved in the annular groove (2) inside the lock ring body (1), the inner ring of the anti-loosening ring (4) is provided with anti-slip teeth (5), and the outer ring of the anti-loosening ring (4) is in clearance fit with the inner wall of the annular groove (2); An elastic clamping assembly (6) is disposed between the anti-loosening ring (4) and the end wall of the annular groove (2), and includes at least two elastic elements (7) evenly distributed circumferentially. One end of the elastic element (7) abuts against the end wall of the annular groove (2), and the other end abuts against the end face of the anti-loosening ring (4); and The locking adjustment assembly (8) includes a locking bolt (9) and an adjusting shim (10). The locking bolt (9) passes through the threaded hole (3) of the locking ring body (1) and its end abuts against the outer wall of the anti-loosening ring (4). The adjusting shim (10) is sleeved between the locking bolt (9) and the locking ring body (1).

2. The lock ring anti-loosening lock device according to claim 1, characterized in that, The inner wall of the annular groove (2) of the lock ring body (1) is provided with circumferentially distributed positioning teeth (11), and the outer ring of the anti-loosening ring (4) is provided with corresponding meshing teeth (12). The positioning teeth (11) and the meshing teeth (12) mesh with each other, and the tooth direction is inclined along the axial direction of the lock ring body (1). The axial length of the anti-loosening ring (4) is less than the depth of the annular groove (2). The anti-loosening ring (4) can slide along the axial direction of the annular groove (2), and the sliding direction is consistent with the extension and contraction direction of the elastic element (7).

3. The lock ring anti-loosening lock device according to claim 2, characterized in that The elastic element (7) of the elastic clamping assembly (6) is a disc spring (13). The axis of the spring (13) is parallel to the axis of the locking ring body (1). An isolation pad (14) is provided between adjacent disc springs (13). The surface of the isolation pad (14) is parallel to the end face of the anti-loosening ring (4). In its natural state, the disc spring (13) pushes the anti-loosening ring (4) to move away from the end wall of the annular groove (2), so that the meshing teeth (12) of the anti-loosening ring (4) and the positioning teeth (11) of the annular groove (2) are engaged.

4. The lock ring anti-loosening lock device according to claim 3, characterized in that The locking bolt (9) of the locking adjustment assembly (8) is arranged radially along the locking ring body (1), the bolt axis is perpendicular to the axis of the locking ring body (1), and the bolt end is a spherical structure; The outer wall of the anti-loosening ring (4) is provided with a hemispherical groove (15), the end of the spherical surface is in contact with the hemispherical groove (15), and the groove depth is greater than 1 / 2 of the radius of the spherical surface.

5. The anti-loosening locking device for a locking ring according to claim 4, characterized in that, The anti-slip teeth (5) of the inner ring of the anti-loosening ring (4) are triangular teeth with the tooth tips facing the axial side of the lock ring body (1) and the tooth surface forming an angle with the axis of the anti-loosening ring (4); The positioning teeth (11) of the locking ring body (1) and the meshing teeth (12) of the anti-loosening ring (4) are both trapezoidal teeth, with a buffer gap between the tooth tip and the tooth root.

6. The lock ring anti-loose locking device according to claim 5, characterized in that, The threaded hole (3) of the locking ring body (1) is a fine thread, which is threaded to the locking bolt (9). A countersunk hole (16) is provided at the entrance of the threaded hole (3). The adjusting shim (10) is an elastic metal shim with its edge embedded in the countersunk hole (16). The head of the locking bolt (9) is provided with an internal hex wrench groove (17), which is perpendicular to the bolt axis and the end face of the head is in contact with the surface of the adjusting shim (10).

7. The anti-loosening locking device for a locking ring according to claim 6, characterized in that, The outer wall of the anti-loosening ring (4) is provided with a guide protrusion (18) along the axial direction, and the inner wall of the annular groove (2) of the lock ring body (1) is provided with a guide slide groove (19). The guide protrusion (18) and the guide slide groove (19) are slidably engaged, and the length direction of both is parallel to the axis of the lock ring body (1). The cross section of the guide protrusion (18) is rectangular and fits with the guide groove (19) with clearance. The top of the guide protrusion (18) is provided with a limiting protrusion (20) to prevent the anti-loosening ring (4) from coming out of the annular groove (2).

8. The lock ring anti-loose locking device according to claim 7, characterized in that, The locking ring body (1) has connecting holes (21) extending radially outward at both ends.

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