Stretch-resistant rotary positioning steel sleeve

Abstract

The utility model provides a tensile rotary positioning steel sleeve, and belongs to the technical field of mechanical parts. The problems that a traditional steel sleeve is prone to plastic deformation, connection between the traditional steel sleeve and matched parts is loosened, then the rigidity and stability of a whole mechanical structure are affected, and in the rotating process, due to the fact that an effective positioning and supporting structure is lacked, the traditional steel sleeve is prone to radial run-out and axial play, and the service life of the whole mechanical structure is affected are solved. And the requirement of high-precision rotary positioning cannot be met. The tensile rotary positioning steel sleeve comprises a positioning sleeve body and is characterized in that the positioning sleeve body is composed of an outer-layer sleeve, a middle-layer sleeve and an inner-layer sleeve, a through hole used for installing a positioning shaft is formed in the annular center of the inner-layer sleeve, and a plurality of positioning grooves used for positioning the inner-layer sleeve and fixing the inner-layer sleeve and the positioning shaft are formed in the inner wall of the inner-layer sleeve. The utility model has the advantages of high efficiency and stretch resistance.

Description

Technical Field

[0001] This utility model belongs to the field of mechanical parts technology, and relates to a positioning steel sleeve, and particularly to a tensile-resistant rotary positioning steel sleeve. Background Technology

[0002] Positioning sleeves are mainly used in mechanical devices to ensure the accuracy of the position of parts. They provide a stable positioning reference for other components through precise inner and outer diameter dimensions and specific installation positions.

[0003] When subjected to large tensile loads, traditional steel sleeves are prone to plastic deformation, which can lead to loosening of the connection with mating parts and thus affect the rigidity and stability of the entire mechanical structure. During rotation, due to the lack of effective positioning and support structures, traditional steel sleeves are prone to radial runout and axial movement, which cannot meet the requirements of high-precision rotation positioning. Summary of the Invention

[0004] The purpose of this invention is to address the aforementioned problems in the existing technology by providing a highly efficient positioning steel sleeve that resists tensile rotation.

[0005] The objective of this utility model can be achieved through the following technical solution: a tensile-resistant rotary positioning steel sleeve, comprising a positioning sleeve body, characterized in that the positioning sleeve body comprises an outer sleeve, a middle sleeve, and an inner sleeve, the inner sleeve being annular with a through hole at its center for mounting a positioning shaft, the inner wall of the inner sleeve having a plurality of positioning grooves for positioning the inner sleeve and fixing it to the positioning shaft, the middle sleeve having support rings at both ends, and a plurality of reinforcing ribs for connecting to the support rings being spaced apart on the middle sleeve, each of the reinforcing ribs being fixed by cross welding to make the overall shape of the middle sleeve a mesh structure, a protrusion being formed at the intersection of each of the reinforcing ribs, the protrusion being provided with a plurality of rolling components, and an installation groove for mounting the rolling components being provided on the outer wall of the inner sleeve.

[0006] In the aforementioned tensile-resistant rotary positioning steel sleeve, the rolling assembly is provided with a fixing ring that serves as a fixing seat, and a support ring with a slide rail groove is provided on the side end of the fixing platform. Several balls are installed on the support ring, and sealing rings that serve a sealing function are installed at both ends of the support ring.

[0007] In the aforementioned tensile-resistant rotary positioning steel sleeve, the outer sleeve outer wall is provided with a ring-shaped snap-fit ​​groove for fixing.

[0008] In the aforementioned tensile-resistant rotary positioning steel sleeve, the middle sleeve is connected to the outer sleeve by welding.

[0009] Compared with existing technologies, this tensile-resistant rotary positioning steel sleeve, through its three-layer structure design, works together to withstand external forces. Compared with a single-layer structure, it can more effectively disperse and resist tensile stress, thus improving the overall tensile strength of the steel sleeve. Through the balls in the rolling assembly, the sliding friction between the inner and middle sleeves is transformed into rolling friction, which greatly reduces friction, makes the inner sleeve rotate more smoothly, reduces energy loss and component wear, and extends the service life of the steel sleeve. Attached Figure Description

[0010] Figure 1 This is a three-dimensional structural diagram of the tensile-resistant rotary positioning steel sleeve.

[0011] Figure 2 This is a cross-sectional view of the tensile-resistant rotary positioning steel sleeve.

[0012] Figure 3 This is a partial view of the middle sleeve of this tensile-resistant rotary positioning steel sleeve.

[0013] In the figure, 1. Positioning sleeve body; 2. Outer sleeve; 3. Middle sleeve; 4. Inner sleeve; 5. Positioning groove; 6. Support ring; 7. Reinforcing rib; 8. Protrusion; 9. Rolling assembly; 10. Fixing ring; 11. Support ring; 12. Ball bearing; 13. Sealing ring; 14. Snap-fit ​​groove. Detailed Implementation

[0014] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0015] like Figure 1 , Figure 2 , Figure 3As shown, this tensile-resistant rotary positioning steel sleeve includes a positioning sleeve body 1. The positioning sleeve body 1 comprises an outer sleeve 2, a middle sleeve 3, and an inner sleeve 4. The inner sleeve 4 is annular with a through hole at its center for installing a positioning shaft. Several positioning grooves 5 are formed on the inner wall of the inner sleeve 4 for positioning the inner sleeve 4 and fixing it to the positioning shaft. The positioning grooves 5 serve to position the inner sleeve 4 and fix it to the positioning shaft, ensuring the positioning shaft is accurately and stably positioned after installation and preventing unnecessary movement. The middle sleeve 3 has support rings 6 at both ends, and several grooves 6 are spaced apart on the middle sleeve 3 for mounting the positioning shaft. The reinforcing ribs 7 connected to the support rings 6 are fixed by cross welding, making the overall shape of the middle sleeve 3 into a mesh structure. The mesh structure can significantly improve the tensile strength of the middle sleeve 3, making it less prone to deformation when subjected to external forces. A protrusion 8 is formed at the intersection of each reinforcing rib 7. Several rolling components 9 are provided on the protrusion 8. The protrusion 8 provides a foundation for the rolling components 9, allowing the rolling components 9 to be stably installed on it. An installation groove for installing the rolling components 9 is provided on the outer wall of the inner sleeve 4. The installation groove is provided to install the rolling components 9 and provide an installation position for the rolling components 9.

[0016] To elaborate further, the rolling assembly 9 is provided with a fixing ring 10 that serves as a fixing seat, and a support ring 11 with a slide rail groove is provided on the side end of the fixing platform. Several balls 12 are installed on the support ring 11. The balls 12 are installed on the support ring 11 and can roll on the support ring 11 by being guided by the slide rail groove, thereby reducing the friction between the inner sleeve 4 and the middle sleeve 3, so that the inner sleeve 4 can rotate more smoothly. Sealing rings 13 are installed at both ends of the support ring 11 to seal the surface and prevent dust, impurities and other contaminants from entering the interior of the rolling assembly 9 and affecting the normal rolling of the balls 12.

[0017] To elaborate further, the outer sleeve 2 has a ring-shaped snap-fit ​​groove 14 on its outer wall for fixing. This snap-fit ​​groove 14 is used for fixing and can be connected to other components by snap-fit, thereby enhancing the connection between the entire steel sleeve and the external structure.

[0018] To elaborate further, the middle sleeve 3 is connected to the outer sleeve 2 by welding. The welding connection ensures the connection strength between the two, making the entire positioning sleeve body 1 a stable whole, and jointly bearing the external force.

[0019] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.

[0020] Although this document frequently uses terms such as positioning sleeve body 1, outer sleeve 2, middle sleeve 3, inner sleeve 4, positioning groove 5, support ring 6, reinforcing rib 7, protrusion 8, rolling assembly 9, fixing ring 10, support ring 11, ball bearing 12, sealing ring 13, and snap-fit ​​groove 14, the possibility of using other terms is not excluded. The use of these terms is merely for the convenience of describing and explaining the essence of this utility model; interpreting them as any additional limitation would contradict the spirit of this utility model.

Claims

1. A tensile-resistant rotary positioning steel sleeve, comprising a positioning sleeve body (1), characterized in that, The positioning sleeve body (1) consists of an outer sleeve (2), a middle sleeve (3) and an inner sleeve (4). The inner sleeve (4) is annular and has a through hole at the center for installing the positioning shaft. The inner wall of the inner sleeve (4) has several positioning grooves (5) for positioning the inner sleeve (4) and fixing it to the positioning shaft. The middle sleeve (3) has support rings (6) at both ends. Several reinforcing ribs (7) for connecting with the support rings (6) are arranged at intervals on the middle sleeve (3). Each reinforcing rib (7) is fixed by cross welding and the overall shape of the middle sleeve (3) is a mesh structure. A protrusion (8) is formed at the intersection of each reinforcing rib (7). Several rolling components (9) are provided on the protrusion (8). An installation groove for installing the rolling components (9) is provided on the outer wall of the inner sleeve (4).

2. The tensile-resistant rotary positioning steel sleeve according to claim 1, characterized in that, The rolling assembly (9) is provided with a fixing ring (10) that serves as a fixing seat, and a support ring (11) with a slide rail groove is provided on the side end of the fixing platform. Several balls (12) are installed on the support ring (11), and sealing rings (13) that serve as sealing rings are installed at both ends of the support ring (11).

3. The tensile-resistant rotary positioning steel sleeve according to claim 1, characterized in that, The outer sleeve (2) has a snap-fit ​​groove (14) on its outer wall for fixing.

4. The tensile-resistant rotary positioning steel sleeve according to claim 1, characterized in that, The middle sleeve (3) is connected to the outer sleeve (2) by welding.

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