Strong-vibration-resistant rotating arm sleeve
By designing a buffer cavity and buffer strip in the reducer's arm sleeve, combined with the structure of the rubber sleeve and the steel sleeve, the problem of the rotary arm sleeve being prone to cracking under vibration impact is solved, and the effective shock absorption effect of the reducer is achieved.
Patent Information
- Application Number
- CN202422033863.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-21
- Publication Date
- 2025-05-06
- Estimated Expiration
- 2034-08-21
AI Technical Summary
The lack of buffer cavity inside the rotary arm sleeve of the existing reducer, resulting in stress concentration under long-term vibration impact, which easily leads to cracking and cannot effectively absorb shock.
A strong vibration-resistant arm sleeve is designed, including a rubber sleeve, a buffer bar, a steel sleeve and a buffer chamber. Through the combination of a buffer chamber and a buffer bar, it provides deformation space to prevent stress concentration, and achieves double shock absorption of vibration through the design of bevel surface and V-shaped groove.
Effectively prevent the rotary arm sleeve from cracking, maintain the buffering and shock absorption effect, and improve the overall shock absorption performance of the reducer.
Smart Images
Figure CN222836214U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of reducers, in particular to an anti-strong vibration arm sleeve. Background Art
[0002] The functional characteristics of the reducer are deceleration and torque increase. In order to meet the customer's site utilization requirements, the overall structure of some reducers must be designed to be compact. In this case, the reducer is fixed by a torque arm. One end of the torque arm is connected to the output end of the reducer, and the other end is installed at the designated location through the cooperation of a swivel arm sleeve and a bolt. The swivel arm sleeve is a rubber sleeve, which is installed in the corresponding inner hole of the torque arm by an interference fit. The rubber sleeve is used to reduce the vibration generated during the operation of the reducer, making the operation of the reducer more stable.
[0003] When the common reducer torque arm rotating arm sleeve is in use, the rubber arm sleeve is used to achieve shock absorption during the operation of the reducer. However, there is no buffer cavity inside the arm sleeve to provide space for its compression deformation. When the arm sleeve is subjected to vibration shock for a long time, the stress inside the arm sleeve is concentrated, which can easily cause the arm sleeve to crack. After cracking, it can no longer provide effective buffering and shock absorption. Therefore, the present application provides a strong vibration resistant rotating arm sleeve to meet the needs. Summary of the invention
[0004] The technical problem to be solved by the utility model is to provide a strong vibration resistant rotating arm sleeve to solve the technical problem that the rotating arm sleeve does not have a buffer cavity inside to provide space for its compression deformation, and the stress inside the rotating arm sleeve is concentrated when subjected to vibration impact for a long time, which easily causes the rotating arm sleeve to crack, and after cracking, it cannot provide effective buffering and shock absorption.
[0005] In order to solve the above technical problems, the utility model provides the following technical solutions:
[0006] An anti-strong vibration arm sleeve comprises a rubber sleeve and further comprises:
[0007] A buffer strip, a steel sleeve is fixed on the inner wall of the rubber sleeve, both ends of the rubber sleeve are provided with a bevel, two groups of buffer cavities are opened inside the rubber sleeve, a V-shaped groove is opened in the middle position of the circumferential surface of the rubber sleeve, the buffer strip is fixed in the V-shaped groove, an annular cavity is opened in the buffer strip, a buffer block 1 is fixed on the side of the inner wall of the annular cavity away from the steel sleeve, a buffer block 2 is fixed on the side of the inner wall of the annular cavity close to the steel sleeve, and a plurality of notches are opened on the circumferential surface of the buffer strip.
[0008] Preferably, the buffer cavity is in the shape of an elongated strip, and the length direction of the buffer cavity is the same as the axial direction of the rubber sleeve.
[0009] Preferably, there are multiple buffer cavities in each group, and the multiple buffer cavities are distributed in a circular array with the center of the steel sleeve as the array center.
[0010] Preferably, a curved surface 1 is provided on a side of the inner wall of the V-shaped groove close to the steel sleeve.
[0011] Preferably, the inner wall of the annular cavity is V-shaped on a side close to the steel sleeve.
[0012] Preferably, the opposing surfaces of the buffer block 1 and the buffer block 2 are both curved surface 2.
[0013] Preferably, a side of the buffer strip away from the steel sleeve is provided with an arc surface and a plane, the number of the arc surfaces is two, and the plane is used for connecting the two arc surfaces.
[0014] Preferably, a second slope is provided on the side surface of the inner wall of the notch.
[0015] Compared with the prior art, the utility model has at least the following beneficial effects:
[0016] In the above scheme, by providing the buffer cavity and the buffer strip, the buffer cavity provides space for the deformation of the rubber sleeve when it is deformed, thereby preventing stress concentration inside the rubber sleeve, thereby preventing the rubber sleeve from cracking and ensuring the buffering and shock-absorbing effect of the rubber sleeve. At the same time, the buffer strip is fixed in the V-shaped groove of the rubber sleeve, and the cooperation of the rubber sleeve and the buffer strip is utilized to achieve double shock absorption of vibration, thereby improving the shock absorption effect of the reducer.
[0017] By setting the inclined surface 1, the inclined surface 1 is opened on the side of the rubber sleeve. When the rubber sleeve is inserted into the inner hole of the torque arm, the rubber sleeve is conveniently inserted into the inner hole of the torque arm through the guidance of the inclined surface 1, thereby facilitating the connection between the rubber sleeve and the torque arm. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] The accompanying drawings, which are incorporated herein and constitute a part of the specification, illustrate embodiments of the present disclosure and, together with the description, further serve to explain the principles of the present disclosure and to enable those skilled in the relevant art to make and use the present disclosure.
[0019] Figure 1 It is a schematic diagram of the overall structure of the utility model;
[0020] Figure 2 It is a front cross-sectional view of the buffer cavity of the utility model;
[0021] Figure 3 This is a right sectional view of a buffer block of the utility model;
[0022] Figure 4 For the utility model Figure 3 A magnified view of the structure at center;
[0023] Figure 5 It is a right sectional view of the buffer chamber of the utility model.
[0024] [Reference Signs]
[0025] 1. Rubber sleeve; 2. Steel sleeve; 3. Inclined surface 1; 4. V-shaped groove; 5. Buffer cavity; 6. Buffer strip; 7. Annular cavity; 8. Buffer block 1; 9. Buffer block 2; 10. Notch; 11. Inclined surface 2.
[0026] As shown in the figure, in order to clearly implement the structure of the embodiment of the utility model, specific structures and devices are marked in the figure, but this is only for illustrative purposes and is not intended to limit the utility model to the specific structure, device and environment. According to specific needs, ordinary technicians in this field can adjust or modify these devices and environments, and the adjustments or modifications made are still included in the scope of the attached claims. DETAILED DESCRIPTION
[0027] The following is a detailed description of an anti-strong vibration and rotation arm sleeve provided by the utility model in combination with the accompanying drawings and specific embodiments. At the same time, it is explained here that in order to make the embodiments more detailed, the following embodiments are the best and preferred embodiments, and those skilled in the art may also adopt other alternative methods to implement some known technologies; and the accompanying drawings are only for more specific description of the embodiments, and are not intended to specifically limit the utility model.
[0028] It should be noted that the references to "one embodiment", "embodiment", "exemplary embodiments", "some embodiments" and the like in the specification indicate that the embodiments described may include specific features, structures or characteristics, but not every embodiment may include the specific features, structures or characteristics. In addition, when a specific feature, structure or characteristic is described in conjunction with an embodiment, it should be within the knowledge of a person skilled in the art to implement such feature, structure or characteristic in conjunction with other embodiments (whether or not explicitly described).
[0029] In general, a term can be understood, at least in part, from its use in context. For example, depending, at least in part, on the context, the term "one or more" as used herein can be used to describe any feature, structure, or characteristic in the singular sense, or can be used to describe a combination of features, structures, or characteristics in the plural sense. Additionally, the term "based on" can be understood as not necessarily intended to convey an exclusive set of factors, but can instead, depending, at least in part, on the context, allow for the presence of other factors that are not necessarily explicitly described.
[0030] like Figure 1-Figure 5 As shown, the embodiment of the utility model provides an anti-strong vibration arm sleeve, including a rubber sleeve 1, the rubber sleeve 1 is made of styrene-butadiene rubber, the styrene-butadiene rubber has good resilience and small permanent deformation, thereby increasing the service life of the rubber sleeve 1, and also includes:
[0031] Buffer strip 6, the inner wall of the rubber sleeve 1 is fixed with a steel sleeve 2, and the rubber sleeve 1 is installed in the inner hole of the torque arm of the reducer. The outer ring of the rubber sleeve 1 and the inner hole of the torque arm are interference fit. At this time, the steel sleeve 2 converts the interference of the rubber sleeve 1 into a pre-compression force. The greater the interference, the greater the pre-compression force. When the reducer is subjected to the impact force generated by the working machine during operation, the pre-compression force in the swing arm sleeve acts to offset the impact force, and finally the assembly formed by the rubber sleeve 1 and the steel sleeve 2 plays a role in resisting strong impact. Both ends of the rubber sleeve 1 are provided with an inclined surface 3, and two groups of buffer cavities 5 are opened inside the rubber sleeve 1. A V-shaped groove 4 is opened in the middle of the circumferential surface of the rubber sleeve 1. The buffer The strip 6 is fixed in the V-shaped groove 4, and an annular cavity 7 is opened in the buffer strip 6. The central axis of the annular cavity 7 coincides with the central axis of the steel sleeve 2. A buffer block 8 is fixed on the side of the inner wall of the annular cavity 7 away from the steel sleeve 2, and a buffer block 2 9 is fixed on the side of the inner wall of the annular cavity 7 close to the steel sleeve 2. The buffer block 2 9 is located between the buffer block 1 8 and the steel sleeve 2. A plurality of notches 10 are opened on the circumferential surface of the buffer strip 6. The plurality of notches 10 are distributed in a circular array with the center of the steel sleeve 2 as the array center. The above structure together constitutes an anti-strong vibration arm sleeve, which effectively prevents the rubber sleeve 1 from cracking during use, ensures the buffering and shock absorption effect of the rubber sleeve 1, and improves the shock absorption effect of the reducer.
[0032] like Figure 2 As shown, in this embodiment, the buffer cavity 5 is in the shape of an elongated strip, and the length direction of the buffer cavity 5 is the same as the axial direction of the rubber sleeve 1. When the rubber sleeve 1 is installed by interference fit, the length direction of the buffer cavity 5 is the same as the axial direction of the rubber sleeve 1, which can reduce the deformation of the rubber sleeve 1 during installation.
[0033] like Figure 5 As shown, in this embodiment, there are multiple buffer cavities 5 in each group, and the multiple buffer cavities 5 are distributed in a circular array with the center of the steel sleeve 2 as the array center. The multiple buffer cavities 5 together provide space for the deformation of the rubber sleeve 1, thereby effectively preventing the rubber sleeve 1 from cracking.
[0034] like Figure 2 As shown, in this embodiment, a curved surface 1 is provided on one side of the inner wall of the V-shaped groove 4 close to the steel sleeve 2, and the curved surface 1 prevents stress concentration at the tip of the V-shaped groove 4, realizes the dispersion of the corresponding stress, thereby preventing cracking at the tip of the V-shaped groove 4, and further preventing cracking of the rubber sleeve 1.
[0035] like Figure 2 As shown, in this embodiment, the inner wall of the annular cavity 7 is V-shaped on one side close to the steel sleeve 2. The V-shape can transmit vibration to both sides of the inner wall of the annular cavity 7 to disperse the vibration, thereby improving the vibration buffering and shock absorbing ability.
[0036] like Figure 2As shown, in this embodiment, the opposing surfaces of buffer block 1 8 and buffer block 2 9 are both curved surface 2. The curved surface shape can make buffer block 1 8 and buffer block 2 9 have better elasticity and can better absorb and alleviate vibration energy.
[0037] like Figure 1 As shown, in this embodiment, the side of the buffer strip 6 away from the steel sleeve 2 is respectively provided with an arc surface and a plane. There are two arc surfaces. The plane is used for connecting the two arc surfaces. The plane is used for the fit of the buffer strip 6 and the inner hole of the torque arm, thereby realizing the connection between the buffer strip 6 and the torque arm. The arc surface is used to reduce the contact area between the buffer strip 6 and the inner hole, thereby facilitating the assembly of the buffer strip 6.
[0038] like Figure 4 As shown, in this embodiment, a second slope 11 is provided on the side of the inner wall of the notch 10 , and the second slope 11 is located at the corner of the inner wall of the notch 10 to prevent stress concentration at the corner of the inner wall of the notch 10 from causing cracks.
[0039] Working principle: Inclined surfaces 3 are provided at both ends of the rubber sleeve 1. When the rubber sleeve 1 is assembled in the inner hole of the torque arm, the rubber sleeve 1 is conveniently inserted into the inner hole of the torque arm through the guidance of the inclined surface 3. The rubber sleeve 1 is installed and fixed in the inner hole of the torque arm by interference fit. Then the torque arm is connected to the reducer and the designated installation location. The reducer generates vibration during operation. When the vibration is transmitted to the rubber sleeve 1, the rubber sleeve 1 and the buffer strip 6 are deformed to reduce vibration. When the rubber sleeve 1 is deformed, the buffer cavity 5 provides space for its deformation to prevent internal stress concentration of the rubber sleeve 1, thereby preventing the rubber sleeve 1 from cracking and ensuring the buffering and shock-absorbing effect of the rubber sleeve 1.
[0040] When the buffer strip 6 is deformed, it provides buffering for vibration. At the same time, the annular cavity 7 provides space for the deformation of the buffer strip 6. At the same time, when the buffer strip 6 is deformed, it drives the buffer block 1 8 and the buffer block 2 9 to fit the surface. The deformation of the buffer block 1 8 and the buffer block 2 9 provides buffering again. The cooperation of the rubber sleeve 1 and the buffer strip 6 realizes double shock absorption of vibration, thereby improving the shock absorption effect of the reducer.
[0041] The present invention covers any substitution, modification, equivalent method and scheme made on the essence and scope of the present invention. In order to make the public have a thorough understanding of the present invention, the specific details are described in detail in the above preferred embodiments of the present invention, and those skilled in the art can fully understand the present invention without the description of these details.
[0042] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention.
Claims
1. An anti-strong vibration arm sleeve, comprising a rubber sleeve (1), characterized in that: Also includes: A buffer strip (6), a steel sleeve (2) is fixed to the inner wall of the rubber sleeve (1), both ends of the rubber sleeve (1) are provided with an inclined surface (3), two groups of buffer cavities (5) are provided inside the rubber sleeve (1), a V-shaped groove (4) is provided in the middle of the circumferential surface of the rubber sleeve (1), the buffer strip (6) is fixed in the V-shaped groove (4), an annular cavity (7) is provided in the buffer strip (6), a buffer block (8) is fixed on the side of the inner wall of the annular cavity (7) away from the steel sleeve (2), a buffer block (9) is fixed on the side of the inner wall of the annular cavity (7) close to the steel sleeve (2), and a plurality of notches (10) are provided on the circumferential surface of the buffer strip (6).
2. The strong vibration and rotation resistant arm sleeve according to claim 1, characterized in that: The buffer cavity (5) is in the shape of an elongated strip, and the length direction of the buffer cavity (5) is the same as the axial direction of the rubber sleeve (1).
3. The strong vibration and rotation resistant arm sleeve according to claim 1, characterized in that: The number of the buffer chambers (5) in each group is multiple, and the multiple buffer chambers (5) are distributed in a circular array with the center of the steel sleeve (2) as the center of the array.
4. The strong vibration and rotation resistant arm sleeve according to claim 1, characterized in that: A curved surface 1 is provided on a side of the inner wall of the V-shaped groove (4) close to the steel sleeve (2).
5. The strong vibration and rotation resistant arm sleeve according to claim 1, characterized in that: The inner wall of the annular cavity (7) is V-shaped on a side close to the steel sleeve (2).
6. The strong vibration and rotation resistant arm sleeve according to claim 1, characterized in that: The opposing surfaces of the buffer block 1 (8) and the buffer block 2 (9) are both curved surfaces 2.
7. The strong vibration and rotation resistant arm sleeve according to claim 1, characterized in that: The buffer strip (6) is provided with an arcuate surface and a plane surface on one side away from the steel sleeve (2), the number of the arcuate surfaces is two, and the plane surface is used to connect the two arcuate surfaces.
8. The strong vibration and rotation resistant arm sleeve according to claim 1, characterized in that: A second inclined surface (11) is provided on the side surface of the inner wall of the notch (10).