Anti-loosening maintenance-free self-locking check ring

Abstract

The utility model discloses an anti-loosening maintenance-free self-locking check ring which comprises a check ring body, a check ring shaft hole is a mounting hole used for being assembled with an external shaft tool, and a notch used for being communicated with the mounting hole is formed in the check ring body. The check ring is provided with a self-adaptive adjusting structure used for adjusting the tightness degree of the check ring in a self-adaptive mode when the working temperature is increased or decreased. The self-locking check ring solves the problem that a traditional self-locking check ring is prone to deformation and loosening under the high-temperature working condition.

Description

TECHNICAL FIELD

[0001] The utility model relates to a retaining ring technical field, concretely is a kind of anti-loosening maintenance-free self-locking retaining ring. BACKGROUND

[0002] In industrial production, the fixation of shaft tooling is often achieved by retaining ring, the traditional self-locking retaining ring can be stably worked in normal temperature environment, and plays a good fastening role, however, when the working environment temperature changes greatly, especially in high-temperature working condition, the traditional self-locking retaining ring exposes obvious defects, since the retaining ring is usually made of metal and other materials, high temperature can change the physical properties of material, and thermal expansion and contraction phenomenon occurs. After the retaining ring expands by heat, the structure that it originally closely cooperates with shaft tooling will appear loose, the inner diameter of retaining ring increases, resulting in the decrease of friction between shaft, so that the problem of retaining ring deformation loosening is prone to occur, once retaining ring loosens, shaft tooling may displace, sway and other situations during operation, not only affect the normal operation accuracy of equipment, and even cause equipment failure seriously, cause production stagnation, bring huge economic loss, in addition, traditional retaining ring often needs to be maintained and replaced after loosening, which further increases the time cost and labor cost of production. SUMMARY

[0003] In view of the deficiencies in the prior art, the utility model provides a kind of anti-loosening maintenance-free self-locking retaining ring, to solve the problem of traditional self-locking retaining ring in high-temperature working condition easy retaining ring deformation loosening.

[0004] To achieve the above purpose, the utility model provides a kind of anti-loosening maintenance-free self-locking retaining ring, including retaining ring, the retaining ring shaft hole is the mounting hole for being assembled with external shaft tooling, the retaining ring is equipped with the notch for being communicated with mounting hole, the retaining ring is provided with the self-adapting adjusting structure for self-adapting adjusting retaining ring tightness degree when working temperature rises or falls.

[0005] The technical scheme has the beneficial effects that: the self-adaptive adjusting structure can sensitively perceive the change of the working temperature, and when the temperature rises, the self-adaptive adjusting structure automatically makes corresponding adjustment, so that the inner diameter of the retaining ring is contracted, the stable and sufficient friction between the retaining ring and the shaft tool is maintained, and the retaining ring is effectively prevented from loosening due to thermal expansion; when the temperature decreases, the self-adaptive adjusting structure can also make the inner diameter of the retaining ring properly expand, prevent damage to the shaft tool caused by excessive contraction, and facilitate the disassembly and assembly of the retaining ring. The self-adaptive adjusting feature ensures that the retaining ring always maintains good fastening performance in a complex temperature environment, greatly improves the stability and reliability of the equipment operation; through the self-adaptive adjusting structure, the problem of retaining ring deformation and loosening that is prone to occur in the high-temperature working condition of the traditional self-locking retaining ring is fundamentally solved, so that the shaft tool can maintain a stable position during operation and will not displace or shake abnormally due to the loosening of the retaining ring, thereby ensuring the operation accuracy of the equipment, reducing the risk of equipment failure caused by the loosening of the retaining ring, prolonging the service life of the equipment, and reducing the frequency of equipment maintenance and replacement, thereby saving a large amount of equipment maintenance cost for the enterprise; since the self-adaptive adjusting structure can automatically respond to temperature changes and maintain the fastening state of the retaining ring, it is not necessary to frequently check the tightness of the retaining ring during equipment operation or to stop maintenance due to the problem of the retaining ring caused by temperature changes. This enables the equipment to operate continuously and stably, greatly improves the production efficiency, reduces the production downtime caused by equipment maintenance, and creates more production benefits for the enterprise.

[0006] The utility model further sets up: the retaining ring is set with deformation groove along its length direction, two ends of deformation groove are communicated to the notch respectively and are formed with opening, the self -adaptation adjusting structure includes the deformation strip that sets in deformation groove, the deformation strip radial section is set with circular arc and is formed with deformation hole, deformation hole is coaxial with installation hole and is set, the deformation strip two ends respectively extend to the notch direction and are worn respectively to each other's adjacent opening to form the deformation part, two deformation parts all are in the notch and set, the deformation strip is made of shape memory alloy material, the deformation strip has first form under first temperature range, the deformation strip has second form under second temperature range, the deformation strip is set in clearance fit between two deformation parts under first form, the deformation strip is bent and makes deformation strip inner wall and deformation groove inner wall abutment fit to apply force to deformation groove under second form, two deformation parts of the deformation strip are set to each other under second form.

[0007] The technical scheme has the beneficial effects that: in the above technical scheme, the deformation strip made of shape memory alloy material is used as the core component of the self-adaptive adjusting structure, and has very precise temperature response characteristics; in the first temperature range, the deformation strip maintains the first shape, the gap between the two deformation parts is matched, so that the check ring is in the normal initial installation state and is well adapted to the shaft tool; when the temperature enters the second temperature range, the deformation strip quickly switches to the second shape and is deformed and bent, the outer peripheral wall is in close abutment with the inner peripheral wall of the deformation groove and exerts a force, and because the radial cross section of the deformation strip is in the shape of a circular arc, this structure design enables the deformation strip to uniformly transmit stress to the four sides of the deformation groove when deformed, thereby driving the check ring to make precise adjustment of the inner diameter; when the temperature rises, the inner diameter of the check ring is contracted, so that the friction between the check ring and the shaft tool is always maintained at an appropriate level, effectively preventing loosening caused by thermal expansion; when the temperature decreases, the inner diameter of the check ring can be reasonably expanded, avoiding damage to the shaft tool, and greatly improving the self-adaptive adjusting capability and stability of the check ring in a complex temperature environment; in the second shape, the two deformation parts of the deformation strip are gathered together, which significantly enhances the anti-loosening performance of the check ring; when the check ring is subjected to outward stress due to temperature changes or equipment operation, the gathered deformation parts can provide additional resistance to effectively prevent the expansion of the inner diameter of the check ring; at the same time, the force exerted by the deformation strip on the deformation groove further stabilizes the check ring structure, so that the check ring and the shaft tool are more closely matched; compared with the deformation and loosening problem of the conventional check ring under high temperature working conditions, the novel check ring fundamentally strengthens the fastening effect of the check ring under various complex working conditions, greatly reduces the risk of loosening of the check ring, ensures the stability of the shaft tool during operation, improves the equipment operation accuracy, effectively reduces equipment failures caused by loosening of the check ring, and provides a strong guarantee for long-term stable operation of the equipment; in the above technical scheme, the shape memory alloy is a prior art, and the phase transition temperature range of the conventional shape memory alloy is more than thirty degrees, that is, when the temperature range of the equipment tool during operation is more than thirty degrees, the shape memory alloy is in the second temperature range and is deformed and changed, and when the equipment stops operating or is not operating, the temperature of the equipment is below thirty degrees, at which time the shape memory alloy is in the first temperature range and is deformed and reset; since the shape memory alloy is a prior art, its structure and phase transition principle will not be described in detail; in the above technical scheme, different types of shape memory alloys can be selected according to the actual working conditions and requirements, that is, shape memory alloys with different phase transition temperatures are selected; in the above technical scheme, in order to improve the diameter contraction or reset of the check ring driven by the shape memory alloy, the material of the check ring can be selected as an elastic material or a metal material with elastic function.

[0008] The utility model further provides: two the deformation part all are equipped with inclined plane and two inclined planes gather together to form the " V " letter shape's clamping groove under the second shape of deformation strip.

[0009] The technical scheme has the beneficial effects that: the two inclined surfaces arranged on the two deformation portions form a V-shaped clamping groove when the deformation strips are in the second mode and are close to each other. This unique design significantly enhances the fastening performance of the check ring. When the shaft tool is in operation and is subjected to vibration or other external forces, the V-shaped clamping groove can form a tighter engagement with the surface of the shaft tool, effectively prevents the relative sliding between the check ring and the shaft, further reduces the risk of check ring loosening, greatly improves the stability of the check ring under complex working conditions compared with the check ring without the structure, guarantees the normal operation accuracy of the equipment, reduces the equipment failure caused by check ring loosening, and prolongs the service life of the equipment. The V-shaped clamping groove also has the function of preventing foreign matters from entering the gap between the check ring and the shaft tool. In the industrial production environment, there are often dust, debris and other impurities. Once these foreign matters enter the cooperation gap between the check ring and the shaft, they may aggravate the wear and affect the normal operation of the equipment. Meanwhile, the design of the clamping groove improves the disassembly and assembly efficiency of the check ring.

[0010] The utility model further sets up: two tooth grooves are arranged on the inner peripheral wall of the check ring, the two tooth grooves are arranged along the length direction of the check ring, the two tooth grooves are oppositely arranged and are separately arranged on both sides of the notch, and the two tooth grooves are arranged close to the notch.

[0011] The technical scheme has the beneficial effects that: the two tooth grooves arranged on the inner peripheral wall of the check ring are symmetrically arranged along the length direction of the check ring and are close to both sides of the notch, which greatly improves the fixing performance of the check ring and the shaft tool, especially the shaft tool with a key groove or a tooth groove. The tooth groove is matched with the key groove or the tooth groove on the shaft tool, further improves the connection strength between the check ring and the shaft tool, prevents the check ring from loosening or shifting, and makes the check ring adapt to different types of shaft tools, thereby improving the adaptation range of the check ring.

[0012] The utility model further sets up: the tooth groove is composed of a first tooth and a second tooth, the first tooth and the second tooth are arranged along the axis direction of the mounting hole, and the first tooth and the second tooth are arranged in a staggered manner.

[0013] The technical scheme has the beneficial effects that: the first tooth and the second tooth are arranged in a staggered manner, which further improves the stability of the check ring on the shaft tool with a key groove or a tooth groove, so as to avoid the loosening or rotation of the check ring.

[0014] The utility model further sets up: the first tooth and the second tooth are both arranged in an inclined manner, and the inclined direction of the first tooth is opposite to the inclined direction of the second tooth.

[0015] With the technical scheme, the first tooth and the second tooth are oppositely inclined, thereby improving the connection strength between the shaft and the tooling, and avoiding the axial rotation of the blocking ring. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 A three-dimensional view of the utility model without tooth grooves;

[0017] Figure 2 A three-dimensional view of the utility model with tooth grooves;

[0018] Figure 3 A sectional view of the utility model. DETAILED DESCRIPTION

[0019] The utility model provides a kind of anti-loosening maintenance-free self-locking check ring 1, including check ring 1, the check ring 1 axle hole is used for the mounting hole 11 of assembly with outside shaft type tool, the check ring 1 is equipped with the gap 12 for being communicated with mounting hole 11, the check ring 1 is equipped with the self-adapting adjustment structure for the self-adapting adjustment of check ring 1 tightness degree when working temperature rises or falls, the check ring 1 is opened along its length direction and is equipped with deformation groove 13, the deformation groove 13 two ends are respectively communicated to the gap 12 place and are formed with opening 131, the self-adapting adjustment structure includes the deformation strip 2 in deformation groove 13, the deformation strip 2 radial section is arranged in circular arc and is formed with deformation hole 21, the deformation hole 21 is coaxially aligned with mounting hole 11, the deformation strip 2 two ends respectively extend towards the gap 12 direction and pass out each adjacent opening 131 to form deformation part 22, two the deformation part 22 is located in the gap 12 setting, the deformation strip 2 is made of shape memory alloy material, the deformation strip 2 has first form under first temperature range, the deformation strip 2 has second form under second temperature range, the deformation strip 2 is arranged in clearance under first form between two deformation parts 22, the deformation strip 2 is bent in second form to make the inner wall of deformation strip 2 and the inner wall of deformation groove 13 abutment to apply force to deformation groove 13, the deformation strip 2 is arranged in mutual convergence under second form between two deformation parts 22, two the deformation part 22 is equipped with inclined surface and two inclined surfaces are mutually converged to form the clamping groove 23 of "V" shape under the second form of deformation strip 2, the inner wall of check ring 1 is equipped with two tooth grooves 3, two the tooth groove 3 is arranged along the length direction of check ring 1, two the tooth groove 3 is symmetrically arranged and is separately arranged on the both sides of gap 12, two the tooth groove 3 is arranged near the position of gap 12, the tooth groove 3 is composed of first tooth 31 and second tooth 32, the first tooth 31 and second tooth 32 are arranged along the axis direction of mounting hole 11 and the first tooth 31 and second tooth 32 are arranged in dislocation, the first tooth 31 and second tooth 32 are all arranged in inclination and the inclination direction of first tooth 31 and the inclination direction of second tooth 32 are oppositely arranged.

[0020] The above specification drawings are only for reference, and the wall thickness and size of the check ring itself can be adjusted according to actual application requirements, and the shape and size of the deformation strip can also be adjusted. When the deformation strip deforms, the diameter of the mounting hole of the check ring will decrease or increase, and even according to the actual situation, the radial section of the mounting hole will be elliptical. Since the above deformation method has been described, it will not be repeated in the specification drawings.

[0021] The basic principle and main features of the utility model and the advantages of the utility model are shown and described above, and the person skilled in the art should understand that the utility model is not limited by the above-mentioned embodiments, and the above-mentioned embodiments and the description in the specification are only to illustrate the principle of the utility model, and various changes and improvements of the utility model can be made without departing from the spirit and scope of the utility model, and these changes and improvements all fall within the scope of the utility model claimed for protection, and the protection scope of the utility model is defined by the appended claims and equivalents thereof.

Claims

1. A maintenance-free self-locking retaining ring against loosening, characterized in that: The application relates to a baffle ring, which comprises a shaft hole, an installation hole for assembling with external shaft tools, a notch for communicating with the installation hole, a self-adapting adjusting structure for self-adaptingly adjusting the tightness of the baffle ring when the working temperature rises or falls, a deformation groove arranged along the length direction of the baffle ring, and two openings respectively communicated with the notch at the two ends of the deformation groove.

2. A maintenance-free self-locking retaining ring according to claim 1, characterized in that: The self-adapting adjusting structure comprises a deformation strip arranged in the deformation groove, the deformation strip is arranged in a circular arc shape in the radial cross section, the deformation strip is provided with a deformation hole, the deformation hole is coaxially aligned with the installation hole, the two ends of the deformation strip respectively extend towards the notch and pass through the adjacent openings to form deformation parts, the two deformation parts are arranged in the notch, the deformation strip is made of a shape memory alloy material, the deformation strip has a first shape at a first temperature range and a second shape at a second temperature range, the two deformation parts are arranged in a clearance fit in the first shape, the deformation strip is bent in the second shape, the inner wall of the deformation strip abuts against the inner wall of the deformation groove to apply an acting force to the deformation groove, and the two deformation parts are arranged close to each other in the second shape.

3. A maintenance-free self-locking retaining ring according to claim 1, wherein: Two inclined surfaces are arranged on the two deformation parts, and the two inclined surfaces are arranged close to each other in the second shape of the deformation strip to form a V-shaped clamping groove.

4. A maintenance-free self-locking retaining ring according to claim 3, characterized in that: Two tooth grooves are arranged on the inner wall of the baffle ring, the two tooth grooves are arranged along the length direction of the baffle ring, the two tooth grooves are symmetrically arranged and are arranged on the two sides of the notch, and the two tooth grooves are arranged close to the notch.

5. A maintenance-free self-locking retaining ring according to claim 4, characterized in that: The tooth groove is composed of a first tooth and a second tooth, the first tooth and the second tooth are arranged along the axis direction of the installation hole, and the first tooth and the second tooth are arranged in a staggered mode. The first tooth and the second tooth are arranged in an inclined mode, and the inclined direction of the first tooth is opposite to that of the second tooth.

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