Bearing for eccentric installation

Abstract

The utility model relates to a bearing for eccentric installation, which is used for connecting a shaft body and an eccentric part, and the eccentric part is eccentrically connected onto the shaft body. The bearing for eccentric installation is characterized by comprising: an inner ring; an outer ring; the retainer is arranged between the inner ring and the outer ring; the rolling body is arranged on the retainer in a rolling manner; wherein the outer ring is provided with an outer extension part and is fixedly connected with the eccentric part; the shaft body is in threaded connection with a limiting piece; the inner ring forms an inner extending part along the shaft body and abuts against the limiting piece. The problems that in an existing scheme, the size of the bearing is limited by the installation space, gaps among the rolling body, the inner ring and the outer ring are small, and abrasion among the rolling body, the inner ring and the outer ring is aggravated are solved.

Description

Technical Field

[0001] This utility model relates to the field of bearings, and more particularly to a bearing for eccentric mounting. Background Technology

[0002] The eccentric wheel is mounted on the drive shaft via bearings. When the drive shaft rotates, it causes the eccentric wheel to rotate eccentrically. The rotation of the eccentric wheel generates inertia, and the force generated by this inertia will compress the bearings and the drive shaft, causing the bearings to deform and affecting the rotation of the drive shaft and the eccentric wheel.

[0003] To cope with this compression, the dimensions of the rolling elements, inner ring, and outer ring of the bearing are usually thickened. At the same time, the bearing size is limited by the installation space, resulting in a smaller clearance between the rolling elements, inner ring, and outer ring, which leads to increased wear between the rolling elements, inner ring, and outer ring.

[0004] It should be noted that the information disclosed in the background section above is only used to enhance the understanding of the background of this disclosure, and therefore may include information that does not constitute prior art known to those skilled in the art. Summary of the Invention

[0005] In view of the shortcomings of the prior art, the purpose of this utility model is to provide a bearing for eccentric installation, so as to solve the problem that the bearing size is limited by the installation space in the prior art, resulting in a small gap between the rolling elements, inner ring and outer ring, which leads to increased wear between the rolling elements, inner ring and outer ring.

[0006] To achieve the above objectives, the technical solution of this utility model is as follows:

[0007] A bearing for eccentric mounting;

[0008] For connecting a shaft and an eccentric component, the eccentric component being eccentrically connected to the shaft; characterized in that the bearing for eccentric mounting comprises: an inner ring; an outer ring; a cage disposed between the inner ring and the outer ring; and rolling elements rotatably disposed on the cage; wherein the outer ring is provided with an outer extension portion for fixedly connecting the eccentric component; a limiting member is threadedly connected to the shaft; and the inner ring forms an inner extension portion along the shaft, abutting against the limiting member.

[0009] A further technical solution is as follows: the bearing for eccentric mounting further includes: a fixing member; wherein, an annular groove is formed on the eccentric member around the shaft body; the outer extension is placed in the annular groove; the fixing member passes through the outer extension and is screwed into the annular groove.

[0010] A further technical solution is as follows: the outer extension is positioned at the annular groove to form a limiting position; the fixing member passes through the limiting position and is screwed into the annular groove.

[0011] A further technical solution is as follows: the limiting position includes a side opening and a bottom opening that are interconnected; the fixing member passes through the bottom opening, and the head of the fixing member contacts the edge of the side opening.

[0012] A further technical solution is that the side opening gradually narrows towards the bottom opening.

[0013] A further technical solution is as follows: the cage includes: a retaining rod, which passes between adjacent rolling elements; and retaining plates, which are inserted into both ends of the retaining rod; wherein the retaining plates abut against the inner ring and the outer ring respectively.

[0014] A further technical solution is as follows: the retaining plate includes: a layer plate; a reinforcing member disposed between the layer plates; wherein the layer plates respectively abut against the inner ring and the outer ring.

[0015] A further technical solution is as follows: the inner extension extends along the outer surface of the shaft body; the limiting member is sleeved on the shaft body and threadedly connected to the shaft body.

[0016] A further technical solution is as follows: the inner extension extends along the end face of the shaft; the limiting member is threadedly connected to the end face of the shaft.

[0017] A further technical solution is: an inclined surface is provided around the limiting member; the inner extension contacts the inclined surface.

[0018] Compared with the prior art, the beneficial technical effects of this utility model are as follows: (1) The inner extension abuts against the limiting member, and the inner extension forms support for the inner ring; the outer extension is fixedly connected to the eccentric member, and the outer extension forms support for the outer ring; the cage supports between the inner ring and the outer ring, so that the bearing, shaft and eccentric member used for eccentric installation form a stable support, which improves the structural strength between the bearing, shaft and eccentric member used for eccentric installation, and avoids wear and squeezing between the components of the bearing used for eccentric installation; (2) When the fixing member is tightened, the fixing member forms a slight squeeze on the edge of the side opening, so that the outer extension fits tightly in the annular groove, which prevents the outer extension from loosening and ensures the connection between the outer ring and the eccentric member; (3) The retaining plate is fastened by the retaining rod, which ensures that the retaining plate is in a vertical state and the stability of the cage; the retaining plate supports the inner ring and the outer ring, which improves the structural strength of the inner ring and the outer ring and avoids deformation and wear of the inner ring and the outer ring. Attached Figure Description

[0019] Figure 1 A schematic diagram of the bearing structure for the first type of eccentric mounting according to an embodiment of the present invention is shown.

[0020] Figure 2 It shows Figure 1 Enlarged structural diagram at point A in the middle.

[0021] Figure 3 It shows Figure 1 Enlarged structural diagram at point B in the middle.

[0022] Figure 4 An enlarged structural diagram of the retainer according to an embodiment of the present invention is shown.

[0023] Figure 5 An enlarged structural diagram of the retainer according to an embodiment of the present invention is shown.

[0024] Figure 6 A schematic diagram of the second installation configuration of the bearing for eccentric mounting according to an embodiment of the present invention is shown.

[0025] The following are labels in the attached diagram: 1. Shaft; 11. Restrictor; 112. Cylindrical block; 113. Bolt post; 111. Inclined surface; 2. Eccentric component; 21. Annular groove; 3. Inner ring; 31. Inner extension; 4. Outer ring; 41. Outer extension; 42. Restriction position; 421. Side opening; 422. Bottom opening; 5. Cage; 51. Cage rod; 52. Cage plate; 521. Sheet plate; 522. Reinforcing component; 6. Rolling element; 7. Fixing component. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of this utility model clearer, the device proposed by this utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments. The advantages and features of this utility model will become clearer according to the following description. It should be noted that the accompanying drawings are in a very simplified form and use non-precise proportions, only used to conveniently and clearly assist in illustrating the purpose of the embodiments of this utility model. Please refer to the accompanying drawings to make the objectives, features, and advantages of this utility model more apparent and understandable. It should be understood that the structures, proportions, sizes, etc., depicted in the accompanying drawings are only used to complement the content disclosed in the specification, for those skilled in the art to understand and read, and are not intended to limit the implementation conditions of this utility model. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportional relationships, or adjustments to the size, without affecting the effects and objectives that this utility model can produce, should still fall within the scope of the technical content disclosed in this utility model.

[0027] Figure 1 A schematic diagram of the structure of a bearing for eccentric mounting according to an embodiment of the present invention is shown. Figure 2 It shows Figure 1 Enlarged structural diagram at point A in the middle. Figure 3 It shows Figure 1 A magnified structural diagram at point B. (Combined with...) Figures 1-3 As shown, this utility model discloses a bearing for eccentric mounting.

[0028] The bearing for eccentric mounting connects shaft 1 and eccentric member 2, with eccentric member 2 eccentrically connected to shaft 1. The bearing includes an inner ring 3, an outer ring 4, a cage 5, and rolling elements 6 rolled on the cage 5. The cage 5 is located between the inner ring 3 and the outer ring 4. The outer ring 4 has an outer extension 41 for fixed connection to the eccentric member 2. A limiting member 11 is threaded onto shaft 1. The inner ring 3 forms an inner extension 31 along shaft 1, abutting against the limiting member 11.

[0029] For example, shaft 1 is a drive shaft or transmission shaft. For example, eccentric member 2 is an eccentric gear or eccentric wheel. For example, rolling element 6 is a cylindrical roller. Outer extension 41 is disposed at both ends of outer ring 4. Outer extension 41 is perpendicular to outer ring 4. Inner extension 31 abuts against limiting member 11, and inner extension 31 provides support for inner ring 3. Outer extension 41 is fixedly connected to eccentric member 2, and outer extension 41 provides support for outer ring 4. Cage 5 is supported between inner ring 3 and outer ring 4, so that a stable support is formed between the bearing, shaft 1 and eccentric member 2 for eccentric mounting, improving the structural strength between the bearing, shaft 1 and eccentric member 2 for eccentric mounting, and avoiding wear and compression between components of the bearing for eccentric mounting.

[0030] The bearing used for eccentric mounting does not use the method of thickening the inner ring 3 and outer ring 4. Instead, the outer ring 4 and the eccentric part 2 are connected by the outer extension 41, and the inner ring 3 and the shaft body 1 are connected by the inner extension 31, thereby improving the structural strength between the bearing used for eccentric mounting, the shaft body 1 and the eccentric part 2.

[0031] The bearing for eccentric mounting also includes a retainer 7. An annular groove 21 is formed on the eccentric member 2 around the shaft 1. An outer extension 41 is placed in the annular groove 21. The retainer 7 passes through the outer extension 41 and is threaded into the annular groove 21.

[0032] An annular groove 21 is formed on the end face of the eccentric member 2. When the outer extension 41 extends along the end face of the eccentric member 2, the outer extension 41 is bent and placed in the annular groove 21. The fastener 7 fits into the annular groove 21. For example, the fastener 7 is a bolt.

[0033] The outer extension 41 is fixed in the annular groove 21 by the fastener 7. The annular groove 21 restricts the outer extension 41, ensuring a reliable connection between the outer ring 4 and the eccentric member 2.

[0034] The outer extension 41 is positioned in the annular groove 21 to form a limiting position 42. The fastener 7 passes through the limiting position 42 and is screwed into the annular groove 21.

[0035] The limiting position 42 includes a side opening 421 and a bottom opening 422 that are in communication with each other. The fastener 7 passes through the bottom opening 422, and the head of the fastener 7 contacts the edge of the side opening 421.

[0036] The edge of the side opening 421 abuts against the head of the fastener 7 to prevent the fastener 7 from becoming loose.

[0037] The side opening 421 gradually narrows towards the bottom opening 422.

[0038] When the fastener 7 is tightened, the fastener 7 forms a slight compression on the edge of the side opening 421, so that the outer extension 41 fits tightly in the annular groove 21, preventing the outer extension 41 from loosening and ensuring the connection between the outer ring 4 and the eccentric part 2.

[0039] Figure 4 An enlarged structural view of the retainer according to an embodiment of the present invention is shown. (In conjunction with...) Figures 1-4 As shown, the cage 5 includes a retaining rod 51 passing between adjacent rolling elements 6 and retaining plates 52 inserted at both ends of the retaining rod 51. The retaining plates 52 abut against the inner ring 3 and the outer ring 4, respectively.

[0040] The retaining rod 51 is oriented left-right. The retaining plate 52 is oriented vertically. Both ends of the retaining rod 51 are provided with protruding teeth. When the retaining plate 52 is inserted into the retaining rod 51, the protruding teeth engage the retaining plate 52. The retaining plate 52 abuts against the outer surface of the inner ring 3 and the inner surface of the outer ring 4, respectively.

[0041] The retaining rod 51 secures the retaining plate 52, ensuring that the retaining plate 52 is vertical and that the retainer 5 is stable. The retaining plate 52 supports the inner ring 3 and the outer ring 4, improving the structural strength of the inner ring 3 and the outer ring 4 and preventing deformation and wear of the inner ring 3 and the outer ring 4.

[0042] Figure 5 An enlarged structural view of the retainer according to an embodiment of the present invention is shown. (In conjunction with...) Figure 1 , Figure 2 , Figure 3 and Figure 5 As shown, the retaining plate 52 includes: a layer plate 521 and a reinforcing member 522 disposed between the layer plates 521. The layer plates 521 abut against the inner ring 3 and the outer ring 4 respectively.

[0043] The layered structure 521 allows the retaining plate 52 to have a multi-layered structure. The reinforcing member 522 strengthens the structure between the layers 521 and reduces the weight of the retaining plate 52. When the retaining plate 52 is inserted into the retaining rod 51, the protruding teeth of the retaining rod 51 engage with the layered structure 521.

[0044] There are two possible positions for the eccentric component 2 mounted on the shaft 1:

[0045] First installation scenario:

[0046] like Figure 1 and Figure 3 As shown, the eccentric part 2 is installed on the shaft 1 at a position away from the end face of the shaft 1.

[0047] At this time, the inner extension 31 extends along the outer surface of the shaft 1. The limiting member 11 is sleeved on the shaft 1 and threadedly connected to the shaft 1.

[0048] For example, the limiting member 11 is annular. An external thread is formed on the outer surface of the shaft 1, and the limiting member 11 is threadedly connected to the external thread position of the shaft 1. The position of the limiting member 11 on the shaft 1 is adjusted by rotating it. Rotating the limiting member 11 causes it to abut against the inner extension 31. The limiting member 11 provides support for the inner extension 31, which tightly fits against the outer surface of the shaft 1, thus forming a stable connection between the inner ring 3 and the shaft 1.

[0049] An inclined surface 111 is provided around the limiting member 11. The inner extension 31 contacts the inclined surface 111.

[0050] The inclined surface 111 gradually narrows towards the shaft 1. The inner extension 31 contacts the inclined surface 111, so that when the limiting member 11 abuts against the inner extension 31, the inner extension 31 can fit tightly against the outer surface of the shaft 1, preventing the inner extension 31 from detaching.

[0051] The second installation scenario:

[0052] Figure 6 This diagram illustrates a second mounting configuration of the bearing for eccentric installation according to an embodiment of the present invention. (Combined with...) Figure 6 As shown, the eccentric part 2 is installed on the shaft 1 near the end face of the shaft 1.

[0053] At this time, the inner extension 31 extends along the end face of the shaft 1. The limiting member 11 is threadedly connected to the end face of the shaft 1.

[0054] The limiting member 11 includes a cylindrical block 112 and a bolt post 113. The bolt post 113 is coaxially mounted on the cylindrical block 112. After the bolt post 113 is screwed into the end face of the shaft body 1, the cylindrical block 112 fits against the end face of the shaft body 1. The diameter of the cylindrical block 112 is smaller than the diameter of the end face of the shaft body 1. The inner extension 31 extends along the end face of the shaft body 1 and then contacts the outer surface of the cylindrical block 112.

[0055] An inclined surface 111 is provided around the limiting member 11. The inner extension 31 contacts the inclined surface 111.

[0056] The inclined surface 111 gradually narrows towards the end face of the shaft 1. The inner extension 31 contacts the inclined surface 111, so that when the limiting member 11 abuts against the inner extension 31, the inner extension 31 can fit tightly against the end face of the shaft 1, preventing the inner extension 31 from detaching.

[0057] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0058] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A bearing for eccentric mounting, used to connect a shaft (1) and an eccentric element (2), said eccentric element (2) being eccentrically connected to the shaft (1); characterized in that, Bearings used for eccentric mounting include: Inner circle (3); Outer ring (4); A retainer (5) is disposed between the inner ring (3) and the outer ring (4); Rolling element (6) is rolled on the cage (5); The outer ring (4) is provided with an outer extension (41) and is fixedly connected to the eccentric member (2); the shaft (1) is threadedly connected to a limiting member (11); the inner ring (3) forms an inner extension (31) along the shaft (1) and abuts against the limiting member (11).

2. The bearing for eccentric mounting as described in claim 1, characterized in that, The bearing for eccentric mounting further includes: a fixing member (7); wherein, the eccentric member (2) has an annular groove (21) around the shaft (1); the outer extension (41) is placed in the annular groove (21); the fixing member (7) passes through the outer extension (41) and is screwed into the annular groove (21).

3. The bearing for eccentric mounting as described in claim 2, characterized in that, The outer extension (41) is positioned in the annular groove (21) to form a limiting position (42); the fastener (7) passes through the limiting position (42) and is screwed into the annular groove (21).

4. The bearing for eccentric mounting as described in claim 3, characterized in that, The limiting position (42) includes a side opening (421) and a bottom opening (422) that are interconnected; the fixing member (7) passes through the bottom opening (422) and the head of the fixing member (7) contacts the edge of the side opening (421).

5. The bearing for eccentric mounting as described in claim 4, characterized in that, The side opening (421) gradually narrows towards the bottom opening (422).

6. The bearing for eccentric mounting as described in claim 1, characterized in that, The cage (5) includes: A retaining rod (51) is inserted between adjacent rolling elements (6); A retaining plate (52) is inserted into both ends of the retaining rod (51); The retaining plate (52) abuts against the inner ring (3) and the outer ring (4) respectively.

7. The bearing for eccentric mounting as described in claim 6, characterized in that, The retaining plate (52) includes: Sheet (521); A reinforcing member (522) is disposed between the layers (521); The layer (521) abuts against the inner ring (3) and the outer ring (4) respectively.

8. The bearing for eccentric mounting as described in claim 1, characterized in that, The inner extension (31) extends along the outer surface of the shaft (1); the limiting member (11) is sleeved on the shaft (1) and threadedly connected to the shaft (1).

9. The bearing for eccentric mounting as described in claim 1, characterized in that, The inner extension (31) extends along the end face of the shaft (1); the limiting member (11) is threadedly connected to the end face of the shaft (1).

10. The bearing for eccentric mounting as described in claim 8 or 9, characterized in that, An inclined surface (111) is provided around the limiting member (11); the inner extension (31) contacts the inclined surface (111).

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