Bearing convenient to disassemble and assemble

Abstract

The bearing convenient to disassemble and assemble comprises a bearing body, a connecting sleeve, a locking sleeve and a bolt piece, a plurality of arc-shaped enclasping pieces are arranged on the connecting sleeve, only the locking sleeve needs to be arranged on the outer sides of the enclasping pieces in a sleeving mode, the bolt piece at the first free end of the locking sleeve is rotated, and therefore the bearing can be disassembled and assembled conveniently. When the bearing is assembled on the shaft, the second free end of the locking sleeve is driven to be close to the first free end of the locking sleeve, so that the locking sleeve is shrunk to force the plurality of clasping pieces to generate small deformation to be attached to and clasp the shaft surface of the shaft, and the bearing is quickly and stably assembled on the shaft. When the bearing needs to be disassembled, only the bolt piece needs to be rotated to drive the second free end of the locking sleeve to be far away from the first free end of the locking sleeve, so that the locking sleeve is enlarged to relieve radial extrusion on the multiple holding pieces, and the bearing can be quickly disassembled from the shaft. In this way, the bearing can be quickly disassembled and assembled, and the problem that the connecting stability is affected due to the fact that the magnitude of interference between the bearing and the shaft which are in interference fit is prone to being insufficient is effectively solved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to bearing technical field, especially, relate to a bearing convenient to dismount. BACKGROUND

[0002] The main function of bearing is supporting mechanical rotary body, reducing the friction coefficient in the movement process of mechanical rotary body, and ensuring the rotation accuracy of mechanical rotary body. At present, bearing is generally connected with shaft through interference fit, not only need to use special tooling, and adopt complex and higher assembly process, cause bearing assembly and disassembly difficult, so as to unable to realize the quick installation and quick disassembly of bearing, and the interference fit between bearing and shaft is prone to insufficient interference, leading to poor stability of the connection between bearing and shaft. SUMMARY

[0003] Based on the above problems existing in the prior art, the purpose of the embodiments of the utility model is to provide a bearing convenient to dismount, to solve the problems of bearing assembly and disassembly difficult in the prior art and unable to realize quick disassembly, and insufficient interference between interference fit bearing and shaft affecting connection stability.

[0004] To achieve the above object, the technical scheme adopted by the utility model is to provide a bearing convenient to dismount, comprising:

[0005] The bearing body comprises a bearing inner ring and a bearing outer ring installed on the outer side of the bearing inner ring through rolling bodies;

[0006] The connecting sleeve is coaxially connected with the bearing inner ring, and the end of the connecting sleeve away from the bearing inner ring is provided with a plurality of arc-shaped clamping pieces, the plurality of clamping pieces are arranged at intervals along the circumference of the connecting sleeve, and the adjacent two clamping pieces have a tightening gap or a tightening gap;

[0007] The locking sleeve is used for being sleeved on the outside of the plurality of clamping pieces to make the plurality of clamping pieces deform and tightly hold the shaft surface, the first free end of the locking sleeve and the second free end of the locking sleeve have an avoiding gap, and the second free end of the locking sleeve is provided with a first threaded hole; and

[0008] The bolt is used for driving the second free end of the locking sleeve to be close to or away from the first free end of the locking sleeve, the bolt is rotationally arranged on the first free end of the locking sleeve, and the screw rod of the bolt is screwed into the first threaded hole.

[0009] Further, the bearing convenient to dismount further comprises a lock screw, and the locking sleeve is provided with a second threaded hole matched with the lock screw.

[0010] Further, the number of the fastening screws is set to two or more, the number of the second threaded holes is consistent with the number of the fastening screws, and the first threaded holes and the second threaded holes are distributed equidistantly along the circumference of the locking sleeve.

[0011] Further, the end of the embracing piece away from the connecting sleeve is provided with an arc-shaped protrusion for extrusion of the embracing piece by the locking sleeve to make the embracing piece deformed, and the arc-shaped protrusion and the embracing piece form a first step for abutting the fastening screw.

[0012] Further, the end of the locking sleeve away from the inner ring of the bearing is provided with a second step for abutting the embracing piece.

[0013] Further, the locking sleeve is provided with a stress release slot, and the stress release slot is arranged opposite to the avoiding gap.

[0014] Further, the shapes and sizes of the adjacent two embracing pieces are the same, and the distance between the adjacent two embracing pieces is equal.

[0015] Further, the embracing piece is integrally formed with the connecting sleeve, and the hardness of the embracing piece is less than the hardness of the connecting sleeve.

[0016] Further, the connecting sleeve is integrally formed with the inner ring of the bearing, and the hardness of the connecting sleeve is less than or equal to the hardness of the inner ring of the bearing.

[0017] Further, the first free end of the locking sleeve is provided with a countersunk hole for embedding the head of the bolt, and the bolt is rotatably installed in the countersunk hole.

[0018] Compared with the prior art, the above one or more technical solutions in the embodiments of the utility model have at least one of the following beneficial effects:

[0019] The bearing convenient to disassemble provided by the embodiment of the utility model, on the connecting sleeve coaxially connected with the bearing inner ring, is equipped with a plurality of arc-shaped holding pieces, the plurality of holding pieces are arranged at intervals along the circumference of the connecting sleeve, and the adjacent two holding pieces have a tightening gap or a tightening gap, only need to set the locking sleeve on the outside of the plurality of holding pieces, by rotating the bolt piece on the first free end of the locking sleeve, drive the second free end of the locking sleeve to be close to the first free end of the locking sleeve, make the locking sleeve gradually reduce and force the plurality of holding pieces to produce slight deformation and tightly fit and hold the shaft surface of the shaft, thereby realize the bearing is quickly and stably assembled on the shaft. BRIEF DESCRIPTION OF DRAWINGS

[0020] In order to more clearly illustrate the technical scheme in the embodiment of the utility model, the following will briefly introduce the drawings needed to be used in the embodiment or the prior art description, obviously, the drawings in the following description only some embodiments of the utility model, for those skilled in the art, without the premise of creating labor intensity, can also obtain other drawings according to these drawings.

[0021] Figure 1 The three-dimensional structure schematic diagram of the bearing convenient to disassemble provided by the embodiment of the utility model is provided.

[0022] Figure 2 The cross-sectional structure schematic diagram of the bearing convenient to disassemble provided by the embodiment of the utility model is provided.

[0023] Figure 3 The partial cross-sectional structure schematic diagram of the bearing convenient to disassemble provided by the embodiment of the utility model is provided.

[0024] Figure 4 The assembly drawing of the locking sleeve and the bearing inner ring provided by the embodiment of the utility model is provided.

[0025] Figure 5 The three-dimensional structure schematic diagram of the bearing inner ring provided by the embodiment of the utility model is provided.

[0026] Figure 6 The exploded view of the bearing convenient to disassemble provided by the embodiment of the utility model is provided.

[0027] Figure 7The utility model provides an exploded view of locking sleeve and bolt piece provided by the utility model embodiment.

[0028] In the drawings, various reference signs refer to:

[0029] 1-bearing body; 11-bearing inner ring; 12-rolling element; 13-bearing outer ring;

[0030] 2-connection sleeve;

[0031] 3-locking sleeve; 31-first free end; 32-second free end; 33-avoidance gap; 34-first threaded hole; 35-second threaded hole; 36-second step; 37-stress release groove; 38-countersunk hole;

[0032] 4-bolt piece; 41-head; 42-screw rod;

[0033] 5-holding piece; 6-tightening screw; 7-tightening gap;

[0034] 8-arc-shaped protrusion; 9-first step; 10-shaft. DETAILED DESCRIPTION

[0035] In order to make the technical problems, technical schemes and beneficial effects to be solved by the utility model clearer and more apparent, the utility model will be further described in detail below in combination with the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the utility model and not to limit the utility model.

[0036] It should be noted that when an element is referred to as being "connected with" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected with" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0037] In addition, the terms "first", "second", "third" are only for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features. Therefore, the features defined with "first", "second", "third" can explicitly or implicitly include one or more of the features. In the description of the utility model, the meaning of "multiple" is two or more than two, unless otherwise explicitly and specifically limited. The meaning of "multiple" is one or more than one, unless otherwise explicitly and specifically limited.

[0038] In the description of the utility model, it is necessary to understand that the orientation or positional relationship indicated by the terms "center", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like is the orientation or positional relationship based on the drawings shown, and is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a special orientation, be constructed and operated in a special orientation, and therefore cannot be understood as a limitation on the utility model.

[0039] In the description of the utility model, it should be explained that, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected, it can be mechanically connected, or it can be electrically connected, it can be directly connected, or it can be indirectly connected through an intermediate medium, it can be the communication inside two elements or the interaction relationship between two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0040] Throughout the specification, reference to "one embodiment" or "an embodiment" means that a specific feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment of the application. Therefore, the phrases "in one embodiment", "in some embodiments", or "in some embodiments" appearing in various places throughout the specification are not all referring to the same embodiment. Furthermore, the specific features, structures, or characteristics can be combined in any suitable manner in one or more embodiments.

[0041] Please refer to Figures 1 to 6 , now the bearing provided by the utility model embodiment convenient to disassemble is described. Please further refer to Figure 1 、 Figure 2 and Figure 3 , the bearing provided by the utility model embodiment convenient to disassemble includes bearing body 1, connecting sleeve 2, locking sleeve 3 and bolt piece 4, bearing body 1 includes bearing inner ring 11, rolling body 12, retainer and bearing outer ring 13, rolling body 12 is arranged between bearing outer ring 13 and bearing inner ring 11 through retainer, and bearing outer ring 13 is installed on the outside of bearing inner ring 11 through rolling body 12. Please further refer to Figure 4 、 Figure 5 and Figure 6The connecting sleeve 2 is coaxially connected with the bearing inner ring 11, and the end of the connecting sleeve 2 away from the bearing inner ring 11 is provided with a plurality of arc-shaped clamping pieces 5, the plurality of clamping pieces 5 are arranged at intervals along the circumference of the connecting sleeve 2, and the adjacent two clamping pieces 5 have a tightening gap or a tightening gap 7. The locking sleeve 3 is used for sleeving the outside of the plurality of clamping pieces 5, so that the plurality of clamping pieces 5 are deformed and tightly clamped on the shaft surface of the shaft 10. The first free end 31 of the locking sleeve 3 and the second free end 32 of the locking sleeve 3 have an avoiding gap 33, and the second free end 32 of the locking sleeve 3 is provided with a first threaded hole 34. The bolt piece 4 is used to drive the second free end 32 of the locking sleeve 3 to be close to or away from the first free end 31 of the locking sleeve 3, the bolt piece 4 is rotationally arranged on the first free end 31 of the locking sleeve 3, and the screw rod 42 of the bolt piece 4 is screwed into the first threaded hole 34. The bearing provided by the embodiment of the utility model is convenient to disassemble and assemble, when the connecting bearing and the shaft 10 are installed, only the shaft 10 needs to pass through the bearing inner ring 11, the connecting sleeve 2 and the annular space formed by the plurality of clamping pieces 5 in sequence, so that the inner hole wall of the bearing inner ring 11 is in gap cooperation with the shaft 10, then the locking sleeve 3 is sleeved on the outside of the plurality of clamping pieces 5, then the bolt piece 4 on the first free end 31 of the locking sleeve 3 is rotated in the first direction, under the action of the screw rod 42 of the bolt piece 4 and the first threaded hole 34 on the second free end 32 of the locking sleeve 3, the second free end 32 of the locking sleeve 3 is driven to be close to the first free end 31 of the locking sleeve 3, at this time, the avoiding gap 33 between the first free end 31 of the locking sleeve 3 and the second free end 32 of the locking sleeve 3 gradually decreases, and then the locking sleeve 3 gradually decreases to force the plurality of clamping pieces 5 to be deformed slightly to tightly clamp the shaft surface of the shaft 10, so that the bearing is quickly assembled on the shaft 10, and the convenience and stability of bearing assembly are improved. When the bearing needs to be disassembled, only the bolt piece 4 on the first free end 31 of the locking sleeve 3 needs to be rotated in the second direction, under the action of the screw rod 42 of the bolt piece 4 and the first threaded hole 34 on the second free end 32 of the locking sleeve 3, the second free end 32 of the locking sleeve 3 is driven to be away from the first free end 31 of the locking sleeve 3, at this time, the avoiding gap 33 between the first free end 31 of the locking sleeve 3 and the second free end 32 of the locking sleeve 3 gradually increases, and then the locking sleeve 3 gradually increases to release the extrusion on the plurality of clamping pieces 5, the plurality of clamping pieces 5 deformed slightly are restored to the original state under the action of the self elasticity to separate from the shaft surface of the shaft 10, so that the shaft 10 and the bearing can be separated, and the bearing can be quickly disassembled from the shaft 10, and the convenience of bearing disassembly is improved. It should be noted that the bearing body 1 can be but is not limited to a double-row roller self-aligning bearing or a double-row ball self-aligning bearing. In addition, the bearing mentioned in the embodiment of the utility model can be but is not limited to a self-aligning bearing.

[0042] Compared with the prior art, the bearing convenient to disassemble and assemble provided in the embodiment of the utility model has a plurality of arc-shaped clamping pieces 5 arranged on the connecting sleeve 2 coaxially connected with the bearing inner ring 11, the plurality of clamping pieces 5 are arranged at intervals along the circumference of the connecting sleeve 2, and the adjacent two clamping pieces 5 have a tightening gap or a tightening gap 7, only need to set the locking sleeve 3 on the outside of the plurality of clamping pieces 5, by rotating the bolt piece 4 on the first free end 31 of the locking sleeve 3, the second free end 32 of the locking sleeve 3 is driven to approach the first free end 31 of the locking sleeve 3, so that the locking sleeve 3 gradually shrinks and forces the plurality of clamping pieces 5 to produce slight deformation to fit and tightly clamp the shaft surface of the shaft 10, thereby realizing the quick and stable assembly of the bearing on the shaft 10. When the bearing needs to be disassembled, only need to rotate the bolt piece 4 to drive the second free end 32 of the locking sleeve 3 away from the first free end 31 of the locking sleeve 3, so that the locking sleeve 3 gradually increases and the radial extrusion of the plurality of clamping pieces 5 is released, the bearing can be quickly disassembled from the shaft 10, and the convenience of bearing disassembly is improved. Therefore, the bearing convenient to disassemble and assemble provided in the embodiment of the utility model not only can reduce the difficulty of bearing assembly and disassembly and realize the quick disassembly and assembly of the bearing, but also can improve the stability of bearing assembly, effectively overcome the problem that the interference fit between the bearing and the shaft 10 is easy to appear insufficient interference and affect the connection stability.

[0043] Please further refer to Figure 2 、 Figure 4 and Figure 7 In some embodiments, the bearing convenient to disassemble and assemble further comprises a locking screw 6, the locking sleeve 3 is provided with a second threaded hole 35 matched with the locking screw 6, only need to screw the locking screw 6 into the second threaded hole 35 on the locking sleeve 3, drive the corresponding clamping piece 5 to further deform by the force of the locking screw 6 to form a more tightly clamping effect on the shaft 10, thereby realizing the locking and positioning of the bearing, which can effectively overcome the problem that the interference fit between the bearing and the shaft 10 is easy to appear insufficient interference and affect the connection stability, so as to further enhance the stability of the connection between the bearing and the shaft 10.

[0044] Please further refer to Figure 2 、 Figure 3 and Figure 6In some embodiments, the number of set screws 6 is set to two or more, and the number of second threaded holes 35 is consistent with the number of set screws 6. The first threaded holes 34 and the second threaded holes 35 are evenly distributed along the circumference of the locking sleeve 3. In this embodiment, two or more second threaded holes 35 are evenly distributed along the circumference of the locking sleeve 3. It is only necessary to screw each set screw 6 into the corresponding second threaded hole 35 on the locking sleeve 3. The multiple set screws 6 apply uniform force to the corresponding clamping plate 5 in the circumferential direction, causing the corresponding clamping plate 5 to further deform and form a more balanced clamping effect on the shaft 10, thereby realizing the locking and positioning of the bearing. This can effectively overcome the problem that the interference fit between the bearing and the shaft 10 is prone to insufficient interference, which affects the connection stability. Therefore, it can further enhance the stability of the connection between the bearing and the shaft 10.

[0045] Please refer to further details. Figure 2 and Figure 5 In some embodiments, the end of the clamping piece 5 away from the connecting sleeve 2 has an arc-shaped protrusion 8. The arc-shaped protrusion 8 allows the locking sleeve 3 to press the clamping piece 5, causing the clamping piece 5 to deform. This allows the end of the clamping piece 5 away from the connecting sleeve 2 to deform sufficiently, forming a tighter clamping effect on the shaft 10. This helps overcome the problem that insufficient interference fit between the bearing and the shaft 10 can affect the connection stability, further enhancing the stability of the connection between the bearing and the shaft 10. At the same time, the connection between the arc-shaped protrusion 8 and the clamping piece 5 forms a first step 9 for the set screw 6 to abut against. When the set screw 6 abuts against the first step 9, it can prevent the locking sleeve 3 from axially displacing relative to the clamping piece 5 and falling off, thereby effectively improving the stability of the locking sleeve 3 fixed to the outside of the multiple clamping pieces 5.

[0046] Please refer to further details. Figure 2 , Figure 6 and Figure 7 In some embodiments, the locking sleeve 3 is provided with a second step 36 at the end away from the inner ring 11 of the bearing for abutting the clamping piece 5. The second step 36 abuts the end of the clamping piece 5 away from the connecting shaft 10, and the set screw 6 abuts against the first step 9, which can prevent the locking sleeve 3 from axially displacing relative to the clamping piece 5. This is beneficial to improving the stability of the locking sleeve 3 fixed to the outside of the multiple clamping pieces 5, thereby further enhancing the stability of the connection between the bearing and the shaft 10.

[0047] Please refer to further details. Figure 7In some embodiments, the locking sleeve 3 is provided with a stress release groove 37 opposite to the clearance 33. By providing the stress release groove 37 on the inner side of the locking sleeve 3, the locking sleeve 3 can gradually shrink to force the plurality of clamping pieces 5 to deform slightly and fit and clamp the shaft surface of the shaft 10 during the process of rotating the bolt member 4 on the first free end 31 of the locking sleeve 3 to drive the second free end 32 of the locking sleeve 3 to approach the first free end 31 of the locking sleeve 3.

[0048] For further reference, please see Figure 5 In some embodiments, the adjacent two clamping pieces 5 are of the same shape and size, and the spacing between the adjacent two clamping pieces 5 is equal, which can enhance the clamping force of the plurality of clamping pieces 5 on the shaft 10, and further enhance the stability of the connection between the bearing and the shaft 10.

[0049] For further reference, please see Figure 2 , Figure 4 and Figure 5 In some embodiments, the clamping pieces 5 are integrally formed with the connecting sleeve 2, and the hardness of the clamping pieces 5 is less than that of the connecting sleeve 2, so that the plurality of clamping pieces 5 can quickly deform under the action of the locking sleeve 3 to form a clamping force on the shaft 10, and the locking sleeve 3 can gradually shrink to force the plurality of clamping pieces 5 to deform slightly and fit and clamp the shaft surface of the shaft 10.

[0050] For further reference, please see Figure 2 , Figure 4 and Figure 5 In some embodiments, the connecting sleeve 2 is integrally formed with the inner ring 11 of the bearing, and the hardness of the connecting sleeve 2 is less than or equal to that of the inner ring 11 of the bearing.

[0051] For further reference, please see Figure 1 , Figure 4 and Figure 6 In some embodiments, the first free end 31 of the locking sleeve 3 is provided with a countersunk hole 38 for embedding the head 41 of the bolt member 4, and the bolt member 4 is rotatably installed in the countersunk hole 38.

[0052] The above description is only a preferred embodiment of the present application, and is not intended to limit the present application. Any modification, equivalent replacement and improvement made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A bearing facilitating disassembly, characterized by The bearing comprises: a bearing body comprising a bearing inner ring and a bearing outer ring mounted on the outer side of the bearing inner ring through rolling bodies; a connecting sleeve coaxially connected with the bearing inner ring, an end of the connecting sleeve away from the bearing inner ring being provided with a plurality of arc-shaped clamping pieces, the plurality of clamping pieces being arranged at intervals along the circumference of the connecting sleeve, and each adjacent two clamping pieces having a tightening gap or a tightening slit therebetween; a locking sleeve for being sleeved on the outer side of the plurality of clamping pieces to make the plurality of clamping pieces deformed and clamped on the shaft surface of the shaft, the locking sleeve having an avoiding gap between a first free end and a second free end of the locking sleeve, and the second free end of the locking sleeve being provided with a first threaded hole; and a bolt for driving the second free end of the locking sleeve to be close to or away from the first free end of the locking sleeve, the bolt being rotationally arranged on the first free end of the locking sleeve, and a screw rod of the bolt being screwed into the first threaded hole.

2. The easy-to-assemble / disassemble bearing of claim 1, wherein, The bearing convenient to disassemble further comprises a locking screw, and the locking sleeve is provided with a second threaded hole matched with the locking screw.

3. The easy-to-assemble / disassemble bearing of claim 2, wherein, The number of the locking screws is two or more, the number of the second threaded holes is consistent with the number of the locking screws, and the first threaded hole and the second threaded hole are distributed at equal intervals along the circumference of the locking sleeve.

4. The easy-to-assemble / disassemble bearing of claim 2, wherein, An end of the clamping piece away from the connecting sleeve is provided with an arc-shaped protrusion for extrusion of the clamping piece by the locking sleeve to make the clamping piece deformed, and a first step is formed at the connection between the arc-shaped protrusion and the clamping piece for abutting against the locking screw.

5. The easy-to-assemble / disassemble bearing of claim 1, wherein, An end of the locking sleeve away from the bearing inner ring is provided with a second step for abutting against the clamping piece.

6. The easy-to-assemble / disassemble bearing of claim 1, wherein, The locking sleeve is provided with a stress release groove, and the stress release groove is arranged opposite to the avoiding gap.

7. The easy-to-assemble / disassemble bearing of claim 1, wherein Each adjacent two clamping pieces are identical in shape and size, and the distance between each adjacent two clamping pieces is equal.

8. The easy-to-assemble / disassemble bearing of claim 1, wherein, The clamping piece is integrally formed with the connecting sleeve, and the hardness of the clamping piece is less than that of the connecting sleeve.

9. The easy-to-assemble / disassemble bearing of claim 1, wherein, The connecting sleeve is integrally formed with the bearing inner ring, and the hardness of the connecting sleeve is less than or equal to that of the bearing inner ring.

10. The easy-to-assemble-and-disassemble bearing according to any one of claims 1 to 9, characterized in that, The first free end of the locking sleeve is provided with a countersunk hole for embedding the head of the bolt, and the bolt is rotationally arranged in the countersunk hole.

Images