Compact bearing positioning and mounting structure

Abstract

The utility model relates to a compact bearing positioning and mounting structure. The technical problem that a bearing body cannot be axially positioned between an existing supporting shaft and an inner gear ring is solved. Comprising a cylindrical inner gear ring and a supporting shaft arranged on the circumferential inner side of the inner gear ring in a penetrating mode, one end of the supporting shaft extends to the outer side of one end of the inner gear ring and is in running fit with one end of the inner gear ring through a sealing assembly, and a bearing body is arranged between the circumferential outer side of the supporting shaft and the circumferential inner side of the inner gear ring. A bearing inner ring of the bearing body is fixed to the supporting shaft through an inner ring positioning structure, and a radial clamping structure capable of preventing the bearing outer ring from moving towards one end of the sealing assembly is arranged between the circumferential inner side of the inner gear ring and the circumferential outer side of the bearing outer ring of the bearing body. The bearing has the advantages that the bearing body can be positioned and limited through the inner ring positioning structure and the radial clamping structure, and the supporting effect of the bearing body is guaranteed. The inner ring positioning structure can position and limit the bearing inner ring, and the radial clamping structure can position and limit the bearing outer ring.

Description

Technical Field

[0001] This utility model belongs to the technical field of engineering machinery and equipment, specifically relating to a compact bearing positioning and mounting structure. Background Technology

[0002] Currently, a bearing housing is needed between the reducer support shaft and the internal gear ring to support the rotational movement between them. However, due to the small bearing installation space between the reducer support shaft and the internal gear ring, and the inability to install a bearing pressure plate on the left side of the outer ring of the bearing housing after installation, the bearing housing cannot be axially positioned using the bearing pressure plate. As a result, during operation, the outer ring of the bearing housing easily detaches from the internal gear ring to the left, causing the bearing housing to lose its support effect and affecting operational stability. Summary of the Invention

[0003] The purpose of this invention is to address the aforementioned problems by providing a compact bearing positioning and mounting structure.

[0004] To achieve the above objectives, this utility model adopts the following technical solution: a compact bearing positioning and mounting structure, including a cylindrical internal gear ring and a support shaft passing through the inner circumferential side of the internal gear ring. One end of the support shaft extends to the outer side of one end of the internal gear ring, and this end of the support shaft is rotatably engaged with one end of the internal gear ring through a sealing assembly. A bearing body is provided between the outer circumferential side of the support shaft and the inner circumferential side of the internal gear ring. The inner ring of the bearing body is fixed to the support shaft through an inner ring positioning structure. A radial snap-fit ​​structure is provided between the inner circumferential side of the internal gear ring and the outer circumferential side of the bearing body to prevent the outer ring of the bearing from moving toward the sealing assembly. The sealing assembly can improve the sealing effect between the support shaft and the internal gear ring, and the bearing body can facilitate the rotational movement between the internal gear ring and the support shaft, ensuring operational stability. The inner ring positioning structure can ensure the limiting and positioning effect of the inner ring of the bearing, effectively preventing displacement of the inner ring. The radial snap-fit ​​structure can limit and position the outer ring of the bearing, effectively preventing displacement of the outer ring and ensuring the support effect of the bearing body.

[0005] In the aforementioned compact bearing positioning and mounting structure, the radial snap-fit ​​structure includes an annular positioning channel located between the inner circumferential side of the internal gear ring and the outer circumferential side of the bearing housing's outer ring. A ball-loading inlet connected to the annular positioning channel is provided on the internal gear ring. Several positioning balls are placed within the annular positioning channel, and these positioning balls act on both the inner circumferential side of the internal gear ring and the outer circumferential side of the bearing housing's outer ring. The annular positioning channel facilitates the rotation and placement of the positioning balls, while the ball-loading inlet allows for easy placement of the positioning balls within the annular positioning channel. The balls effectively prevent misalignment of the bearing outer ring, ensuring the effective positioning of the bearing outer ring.

[0006] In the above-mentioned compact bearing positioning and mounting structure, a first annular groove is provided on the outer circumferential side of the middle of the bearing outer ring, and a second annular groove corresponding to the first annular groove is provided on the inner circumferential side of the internal gear ring. The first annular groove and the second annular groove are joined together to form the above-mentioned annular positioning channel. The first annular groove and the second annular groove are arranged vertically and vertically, and the cross-section of the first annular groove and the second annular groove are both semi-circular structures. The size of the annular positioning channel is greater than or equal to the size of the positioning steel ball.

[0007] In the above-mentioned compact bearing positioning and installation structure, the number of ball bearing inlets is at least one and is radially arranged on the outer side of the inner gear ring. There are 99 positioning balls. The size of the ball bearing inlet is larger than the size of the positioning balls, which facilitates the placement of the positioning balls. The positioning balls can be directly placed into the annular positioning channel through the ball bearing inlet, thereby improving the installation efficiency of the positioning balls.

[0008] In the above-mentioned compact bearing positioning and mounting structure, the ball bearing inlet is connected to the second annular groove, and a screw plug for sealing the ball bearing inlet is provided inside the ball bearing inlet. The screw plug and the ball bearing inlet are fixedly connected by threads, which can ensure the connection stability between the screw plug and the ball bearing inlet and ensure the sealing effect.

[0009] In the above-mentioned compact bearing positioning and mounting structure, the support shaft is hollow and one end of the support shaft has an annular portion extending to the outer side of one end of the internal gear ring. The outer side of the annular portion near the internal gear ring has a cylindrical portion sleeved on the circumferential outer side of one end of the internal gear ring. The sealing component can be abutted by the annular portion, and the annular portion and the cylindrical portion are an integral structure, which can improve the overall structural strength.

[0010] In the aforementioned compact bearing positioning and mounting structure, the sealing component is disposed between the inner circumferential side of the annular portion and the inner circumferential side of the end of the internal gear ring where the cylindrical portion is sleeved, which can improve the sealing effect between the cylindrical portion of the support shaft and the connection of the internal gear ring.

[0011] In the aforementioned compact bearing positioning and mounting structure, the sealing assembly includes an annular sealing ring. The sealing ring has a first inclined mounting surface and a second inclined mounting surface symmetrically arranged and tilted outwards in opposite directions at both ends. A first sealing ring is inclined on the first inclined mounting surface, and a second sealing ring is inclined on the second inclined mounting surface in the opposite direction to the first sealing ring. The first sealing ring contacts a first sealing annular inclined surface inside the annular portion, and the second sealing ring contacts a second sealing annular inclined surface inside the end of the internal gear ring that houses the cylindrical portion. The first and second inclined mounting surfaces facilitate the installation of the first and second sealing rings, and the first and second sealing annular inclined surfaces facilitate abutment and sealing between the first and second sealing rings, ensuring a sealing effect.

[0012] In the above-mentioned compact bearing positioning and mounting structure, the bearing body is a double-row angular bearing and the bearing body is located on one side of the sealing assembly. The double-row angular bearing has the advantages of strong load-bearing capacity and small space occupation.

[0013] In the aforementioned compact bearing positioning and mounting structure, the inner ring positioning structure includes an annular limiting step located on the outer circumferential side of the support shaft near the annular portion and on the inner circumferential side of the sealing assembly. The annular limiting step abuts against one end of the bearing inner ring, and a large nut is threadedly connected to the outer side of the other end of the support shaft, abutting against the other end of the bearing inner ring. A bearing inner ring mounting groove is formed between the annular limiting step and the large nut, and the bearing inner ring is set in the bearing inner ring mounting groove. The annular limiting step and the large nut can position and limit both sides of the bearing inner ring, ensuring the operational stability of the bearing inner ring.

[0014] Compared with existing technologies, the advantages of this utility model are:

[0015] 1. The inner ring positioning structure and radial snap-fit ​​structure can be used to position and restrict the bearing body, ensuring the support effect of the bearing body.

[0016] 2. The inner ring positioning structure can position and restrict the bearing inner ring, effectively preventing the bearing inner ring from shifting. The radial snap-fit ​​structure can position and restrict the bearing outer ring, effectively preventing the bearing outer ring from shifting.

[0017] 3. The sealing effect between the internal gear ring and the support shaft can be improved by using sealing components. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of this utility model.

[0019] Figure 2 This is a structural cross-sectional view of the present invention.

[0020] In the figure: internal gear ring 1, second annular groove 11, support shaft 2, annular part 21, cylindrical part 22, sealing assembly 3, sealing ring 31, first inclined mounting surface 311, second inclined mounting surface 312, first sealing ring 32, second sealing ring 33, first sealing annular inclined surface 34, second sealing annular inclined surface 35, bearing body 4, bearing inner ring 41, bearing outer ring 42, first annular groove 421, inner ring positioning structure 5, annular limiting step 51, large nut 52, radial snap-fit ​​structure 6, annular positioning channel 61, steel ball inlet 62, screw plug 621, positioning steel ball 63. Detailed Implementation

[0021] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0022] like Figure 1 , Figure 2 As shown, a compact bearing positioning and mounting structure includes a cylindrical internal gear ring 1 and a support shaft 2 passing through the inner circumferential side of the internal gear ring 1. One end of the support shaft 2 extends to the outer side of one end of the internal gear ring 1, and this end of the support shaft 2 is rotatably engaged with one end of the internal gear ring 1 via a sealing assembly 3. A bearing body 4 is provided between the outer circumferential side of the support shaft 2 and the inner circumferential side of the internal gear ring 1. The inner ring 41 of the bearing body 4 is fixed to the support shaft 2 by an inner ring positioning structure 5. A space is provided between the inner circumferential side of the internal gear ring 1 and the outer ring 42 of the bearing body 4 to prevent the outer ring 42 from facing inward. The radial snap-fit ​​structure 6, which moves at one end of the sealing assembly 3, can improve the sealing effect between the support shaft 2 and the inner gear ring 1. The bearing body 4 can facilitate the rotational movement between the inner gear ring 1 and the support shaft 2, ensuring operational stability. The inner ring positioning structure 5 can ensure the restriction and positioning effect of the bearing inner ring 41, effectively preventing displacement of the bearing inner ring 41. The radial snap-fit ​​structure 6 can restrict and position the bearing outer ring 42, effectively preventing displacement of the bearing outer ring 42 and ensuring the support effect of the bearing body 4.

[0023] Specifically, the radial snap-fit ​​structure 6 includes an annular positioning channel 61 located between the inner gear ring 1 and the outer bearing ring 42 of the bearing housing 4. The inner gear ring 1 has a ball inlet 62 connected to the annular positioning channel 61. Several positioning balls 63 are placed in the annular positioning channel 61, and the positioning balls 63 act on the inner gear ring 1 and the outer bearing ring 42 of the bearing housing 4 respectively. The annular positioning channel 61 facilitates the rotation and placement of the positioning balls 63, and the ball inlet 62 facilitates the placement of the positioning balls 63 in the annular positioning channel 61. The balls 63 effectively prevent the outer bearing ring 41 from shifting, ensuring the positioning effect of the outer bearing ring 42.

[0024] The outer ring 42 of the bearing has a first annular groove 421 on the outer circumferential side of the middle part, and the inner gear ring 1 has a second annular groove 11 on the inner circumferential side corresponding to the first annular groove 421. The first annular groove 421 and the second annular groove 11 are joined together to form the annular positioning channel 61. The first annular groove 421 and the second annular groove 11 are arranged vertically and vertically, and the cross-section of the first annular groove 421 and the second annular groove 11 is semi-circular. The size of the annular positioning channel 61 is greater than or equal to the size of the positioning steel ball 63.

[0025] like Figure 1 , Figure 2 As shown, there is at least one ball bearing inlet 62, which is radially arranged around the inner toothed ring 1 circumference outwards. There are 99 positioning balls 63. The size of the ball bearing inlet 62 is larger than the size of the positioning balls 63, which facilitates the placement of the positioning balls 63. The positioning balls 63 can be directly placed into the annular positioning channel 61 through the ball bearing inlet 62, thereby improving the installation efficiency of the positioning balls 63.

[0026] Furthermore, the ball bearing inlet 62 is connected to the second annular groove 11. The ball bearing inlet 62 is provided with a screw plug 621 for sealing the ball bearing inlet 62. The screw plug 621 is fixedly connected to the ball bearing inlet 62 by threads, which can ensure the connection stability between the screw plug 621 and the ball bearing inlet 62 and ensure the sealing effect.

[0027] The support shaft 2 is hollow and has an annular portion 21 extending to the outer side of one end of the inner gear ring 1. The outer side of the annular portion 21 near the inner gear ring 1 has a cylindrical portion 22 sleeved on the outer side of one end of the inner gear ring 1. The sealing assembly 3 can be abutted by the annular portion 21, and the annular portion 21 and the cylindrical portion 22 are an integral structure, which can improve the overall structural strength.

[0028] Combine Figure 1 , Figure 2 As shown, the sealing component 3 is disposed between the inner side of the annular portion 21 and the inner side of the end of the internal gear ring 1 where the cylindrical portion 22 is sleeved, which can improve the sealing effect between the cylindrical portion 22 of the support shaft 2 and the internal gear ring 1.

[0029] The sealing assembly 3 includes a circular sealing ring 31. The sealing ring 31 has two symmetrically arranged, outwardly inclined first mounting surfaces 311 and 312 at its two ends. The first inclined mounting surface 311 has a first sealing ring 32, and the second inclined mounting surface 312 has a second sealing ring 33, which is inclined in the opposite direction to the first sealing ring 32. The first sealing ring 32 contacts the first sealing annular inclined surface 34 inside the annular portion 21, and the second sealing ring 33 contacts the second sealing annular inclined surface 35 inside the end of the internal gear ring 1 where the cylindrical portion 22 is fitted. The first inclined mounting surfaces 211 and 212 facilitate the installation of the first sealing ring 32 and the second sealing ring 33, and the first sealing annular inclined surfaces 34 and 35 facilitate the sealing of the first sealing ring 32 and the second sealing ring 33, ensuring a sealing effect.

[0030] Specifically, the bearing body 4 is a double-row angular bearing and the bearing body 4 is located on one side of the sealing assembly 3. The double-row angular bearing has the advantages of strong load-bearing capacity and small space occupation.

[0031] Combine Figure 1 , Figure 2 As shown, the inner ring positioning structure 5 includes an annular limiting step 51 located on the outer circumferential side of the support shaft 2 near the annular portion 21 and on the inner circumferential side of the sealing assembly 3. The annular limiting step 51 abuts against one end of the bearing inner ring 41, and the other end of the support shaft 2 is threadedly connected to a large nut 52 that abuts against the other end of the bearing inner ring 41. A bearing inner ring mounting groove is formed between the annular limiting step 51 and the large nut 52, and the bearing inner ring 41 is set in the bearing inner ring mounting groove. The annular limiting step 51 and the large nut 52 can position and limit the two sides of the bearing inner ring 41, ensuring the operational stability of the bearing inner ring 41.

[0032] The principle of this embodiment is that the bearing body 4 can support the rotational movement between the internal gear ring 1 and the support shaft 2, and the inner ring positioning structure 5 can facilitate the positioning and restriction of the bearing inner ring 41, effectively preventing the bearing inner ring 41 from shifting. The radial snap-fit ​​structure 6 can position and restrict the bearing outer ring 42, effectively preventing the bearing outer ring 42 from shifting, thus ensuring the support effect of the bearing body 4.

[0033] 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.

[0034] Although this document frequently uses terms such as internal gear ring 1, second annular groove 11, support shaft 2, annular portion 21, cylindrical portion 22, sealing assembly 3, sealing ring 31, first inclined mounting surface 311, second inclined mounting surface 312, first sealing ring 32, second sealing ring 33, first sealing annular inclined surface 34, second sealing annular inclined surface 35, bearing body 4, bearing inner ring 41, bearing outer ring 42, first annular groove 421, inner ring positioning structure 5, annular limiting step 51, large nut 52, radial snap-fit ​​structure 6, annular positioning channel 61, steel ball inlet 62, screw plug 621, and positioning steel ball 63, 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 compact bearing positioning and mounting structure, comprising a cylindrical internal gear ring (1) and a support shaft (2) passing through the inner circumferential side of the internal gear ring (1), wherein one end of the support shaft (2) extends to the outer side of one end of the internal gear ring (1) and the end of the support shaft (2) is rotatably engaged with one end of the internal gear ring (1) via a sealing assembly (3), and a bearing body (4) is provided between the outer circumferential side of the support shaft (2) and the inner circumferential side of the internal gear ring (1), characterized in that, The bearing inner ring (41) of the bearing body (4) is fixed on the support shaft (2) by the inner ring positioning structure (5), and a radial snap-fit ​​structure (6) is provided between the inner tooth ring (1) circumferentially inward and the outer ring (42) of the bearing body (4) circumferentially outward to prevent the outer ring (42) of the bearing from moving toward the sealing assembly (3).

2. The compact bearing positioning and mounting structure according to claim 1, characterized in that, The radial snap-fit ​​structure (6) includes an annular positioning channel (61) between the inner circumferential inner side of the inner gear ring (1) and the outer circumferential outer side of the bearing outer ring (42) of the bearing body (4). The inner gear ring (1) is provided with a steel ball loading inlet (62) that communicates with the annular positioning channel (61). A number of positioning steel balls (63) are placed in the annular positioning channel (61), and the positioning steel balls (63) act on the inner circumferential inner side of the inner gear ring (1) and the outer circumferential outer side of the bearing outer ring (42) of the bearing body (4).

3. The compact bearing positioning and mounting structure according to claim 2, characterized in that, The outer ring (42) of the bearing is provided with a first annular groove (421) on the outer side of the middle circumferential direction, and the inner gear ring (1) is provided with a second annular groove (11) corresponding to the first annular groove (421) on the inner side of the circumferential direction. The first annular groove (421) and the second annular groove (11) are joined together to form the above-mentioned annular positioning channel (61).

4. The compact bearing positioning and mounting structure according to claim 3, characterized in that, The number of the ball bearing inlets (62) is at least one and is radially arranged on the outer side of the inner tooth ring (1).

5. A compact bearing positioning and mounting structure according to claim 3, characterized in that, The ball bearing inlet (62) is connected to the second annular groove (11), and a screw plug (621) for sealing the ball bearing inlet (62) is provided inside the ball bearing inlet (62).

6. The compact bearing positioning and mounting structure according to claim 1, characterized in that, The support shaft (2) is hollow and one end of the support shaft (2) has an annular portion (21) extending to the outer side of one end of the internal gear ring (1). The annular portion (21) has a cylindrical portion (22) sleeved on the outer side of one end of the internal gear ring (1) in a circumferential direction.

7. A compact bearing positioning and mounting structure according to claim 6, characterized in that, The sealing component (3) is disposed between the inner circumferential side of the annular portion (21) and the inner circumferential side of the end of the internal gear ring (1) on which the cylindrical portion (22) is fitted.

8. A compact bearing positioning and mounting structure according to claim 6, characterized in that, The sealing assembly (3) includes a circular sealing ring (31). The sealing ring (31) has a first inclined mounting surface (311) and a second inclined mounting surface (312) that are symmetrically arranged and inclined outward in opposite directions at both ends. The first inclined mounting surface (311) is provided with an inclined first sealing ring (32), and the second inclined mounting surface (312) is provided with a second sealing ring (33) that is inclined in the opposite direction to the first sealing ring (32). The first sealing ring (32) contacts the first sealing annular inclined surface (34) inside the annular portion (21), and the second sealing ring (33) contacts the second sealing annular inclined surface (35) inside the end of the internal gear ring (1) on which the cylindrical portion (22) is fitted.

9. A compact bearing positioning and mounting structure according to claim 1, characterized in that, The bearing body (4) is a double-row angular bearing and the bearing body (4) is located on one side of the sealing assembly (3).

10. A compact bearing positioning and mounting structure according to claim 6, characterized in that, The inner ring positioning structure (5) includes an annular limiting step (51) located on the outer side of the support shaft (2) near the annular part (21) and on the inner side of the sealing assembly (3). The annular limiting step (51) abuts against one end of the bearing inner ring (41), and the other end of the support shaft (2) is threadedly connected to a large nut (52) that abuts against the other end of the bearing inner ring (41).

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