Dismounting tool for bearing

Abstract

The utility model relates to the technical field of bearing disassembly, and discloses a bearing disassembly tool which comprises a fixing ring sleeve, a fastening piece and a force application piece, and the fixing ring sleeve comprises two half abutting rings capable of clamping an inner ring of a bearing on the inner side. The fastening piece is used for connecting the two half abutting rings and enabling the two half abutting rings to be close to or away from each other, and the force applying piece is used for applying axial acting force to the fixing ring sleeve so that the fixing ring sleeve can drive the bearing inner ring to move in the axial direction relative to the shaft. Therefore, compared with an existing dismounting mode, the bearing inner ring dismounting device has the advantages that the fixing ring sleeve can clamp the bearing inner ring with the outer diameter not smaller than the diameter between the two semi-ring abutting rings, and bearing inner rings of different specifications can be rapidly adjusted.

Description

Technical Field

[0001] This utility model relates to the field of bearing disassembly technology, and more specifically to a bearing disassembly fixture. Background Technology

[0002] Thrust bearings are widely used in mechanical transmission systems. Their inner rings are usually fitted with the shaft with an interference fit to ensure operational stability.

[0003] Common disassembly methods in the industry mainly include using pullers. However, pullers have poor adaptability and are difficult to quickly adjust for bearing inner rings of different specifications. Furthermore, uneven stress on the bearing inner ring during operation can lead to stress concentration, causing deformation and affecting its subsequent use. Utility Model Content

[0004] The purpose of this invention is to overcome the problem of poor tool compatibility in the existing technology.

[0005] To achieve the above objectives, this utility model provides a bearing disassembly fixture comprising:

[0006] The retaining ring sleeve includes two semi-abutting rings that can clamp the inner ring of the bearing on the inside.

[0007] Fasteners are used to connect two semi-abutment rings and bring the two semi-abutment rings closer together or further apart;

[0008] The force-applying component is used to apply an axial force to the retaining ring, so that the retaining ring drives the inner ring of the bearing to move axially relative to the shaft.

[0009] Optionally, each semi-abutment ring has a semi-annular protrusion on its inner end face for clamping the inner ring of the bearing.

[0010] Optionally, adjustment seats are provided on both sides of the opening of the two semi-abutment rings, and fasteners are provided on the two adjustment seats.

[0011] Optionally, the fastener includes a threaded adjusting rod and an adjusting nut, the end of which passes through two adjusting seats and is connected to the adjusting nut.

[0012] Optionally, the force-applying component includes a pull seat and a lead screw rotatably connected to the pull seat. The pull seat is also provided with multiple connecting rods, which are detachably connected to the fixing ring.

[0013] Optionally, there are two connecting rods, which are located on both sides of the lead screw.

[0014] Optionally, the fixing ring is provided with two connecting holes, and the two connecting rods are detachably connected to the two connecting holes.

[0015] Optionally, the connecting rod and the pull seat can be detachably connected.

[0016] Optionally, the disassembly tooling for the bearing also includes an auxiliary force-applying component that can apply a driving force in a second direction to the retaining ring.

[0017] Optionally, the auxiliary force-applying component includes multiple set screws, and each half-abutment ring has multiple through holes evenly spaced along its circumference, with the multiple set screws correspondingly disposed in the multiple through holes.

[0018] Through the above technical solution, the fastener in this utility model can quickly adjust the two semi-abutment rings to move closer or further apart to fix the bearing inner ring between the two semi-abutment rings; then, the force-applying component applies an axial force to the fixing ring sleeve, causing the fixing ring sleeve to drive the bearing inner ring to move axially relative to the shaft, thereby realizing the disassembly of the bearing inner ring. Therefore, compared with existing disassembly methods, this utility model can clamp bearing inner rings with an outer diameter not less than the diameter between the two semi-abutment rings, and can quickly adjust for bearing inner rings of different specifications. Attached Figure Description

[0019] Figure 1 This is a three-dimensional structural diagram of the fixing ring sleeve in this utility model;

[0020] Figure 2 This is a top view of the fixing ring sleeve in this utility model;

[0021] Figure 3 This is a structural schematic diagram of the fixing ring and the force application mechanism in this utility model.

[0022] Explanation of reference numerals in the attached figures

[0023] 1. Fixing ring; 101. Semi-abutting ring; 102. Semi-annular protrusion; 103. Connecting hole; 2. Fastener; 201. Threaded adjusting rod; 202. Adjusting nut; 3. Force-applying component; 301. Pull seat; 302. Screw; 303. Connecting rod; 304. Fixing bolt; 4. Adjusting seat; 5. Auxiliary force-applying component; 501. Set screw. Detailed Implementation

[0024] The specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit the scope of this utility model.

[0025] refer to Figure 1 , Figure 2 and Figure 3 It can be seen that the bearing disassembly tooling of this utility model includes:

[0026] The retaining ring sleeve 1 includes two semi-abutting rings 101 capable of clamping the inner ring of the bearing.

[0027] Fastener 2, which is used to connect the two half-abutment rings 101 and make the two half-abutment rings 101 close to or far from each other;

[0028] Force-applying component 3 is used to apply axial force to the fixed ring sleeve 1 so that the fixed ring sleeve 1 drives the inner ring of the bearing to move axially relative to the shaft.

[0029] The fastener 2 adjusts the two semi-abutment rings 101 to be close together, so as to press the bearing inner ring between the two semi-abutment rings 101 and lock the two semi-abutment rings 101 to prevent relative sliding between the two semi-abutment rings 101 and the bearing inner ring.

[0030] Among them, the axial force F3 applied by the force-applying component 3 to the fixed ring sleeve 1 will cause it to have a tendency to move in the direction of the force F3; at this time, the friction between the inner ring of the bearing and the fixed ring sleeve 1 will restrict the relative sliding between the fixed ring sleeve 1 and the inner ring of the bearing, so that the inner ring of the bearing has the same tendency to move as the fixed ring sleeve 1.

[0031] It is understandable that when the axial force F3 applied by the force-applying component 3 is greater than the maximum static friction force F2 between the bearing inner ring and the shaft, the fixing ring 1 can drive the bearing inner ring to overcome the friction force between it and the shaft, so that the bearing inner ring can move from the shaft along the direction of the force F3, and thus be removed from the shaft.

[0032] Through the above technical solution, the fastener 2 in this utility model can quickly adjust the two half-abutment rings 101 to move closer or further apart to fix the bearing inner ring between the two half-abutment rings 101; then, the force-applying component 3 applies an axial force to the fixing ring sleeve 1 so that the fixing ring sleeve 1 drives the inner ring to move axially relative to the shaft, thereby realizing the disassembly of the bearing inner ring.

[0033] Therefore, compared with the existing disassembly methods, the fixing ring 1 can clamp the bearing inner ring with an outer diameter not less than the diameter between the two half abutment rings 101, and can be quickly adjusted for bearing inner rings of different specifications.

[0034] Meanwhile, compared with the existing disassembly methods, the contact area between the fixing ring 1 and the bearing inner ring is larger, which can avoid the occurrence of concentrated stress on the bearing inner ring; and the force-applying component 3 drives the fixing ring 1 to move the bearing inner ring along its axial direction, which can avoid the force-applying component 3 directly contacting the bearing inner ring and causing damage, thereby ensuring that the accuracy and service life of the bearing inner ring do not change.

[0035] In some embodiments, each bearing abutment ring has a semi-annular protrusion 102 on its inner end for clamping the bearing inner ring.

[0036] Among them, reference Figure 1 and Figure 2 It can be seen that the sides of the semi-annular protrusion 102 are all constructed as inclined surfaces that slope towards the center surface located between the two sides, so as to reduce the thickness of the top of the semi-annular protrusion 102 and form a support platform that can support one side periphery on the outer end face of the inner ring of the bearing.

[0037] In this utility model, there are two ways in which the fixing ring 1 clamps the inner ring of the bearing:

[0038] First, the top of the semi-annular protrusion 102 at the inner end of the two semi-abutting rings 101 or the whole of it is inserted into the groove on the inner ring for accommodating the rolling element, and the two abutting rings are connected by fasteners 2. At the same time, the two semi-abutting rings 101 are adjusted to move closer to each other so as to squeeze the bearing inner ring between the two semi-abutting rings 101, thereby clamping the bearing inner ring in the fixing ring sleeve 1.

[0039] It is worth noting that the fastener 2 of this clamping method should ensure that the maximum static friction force F1 generated at the contact position of the bearing inner ring due to the compression of the two semi-abutment rings 101 is greater than the maximum static friction force F2 between the bearing inner ring and the shaft. This is to prevent the retaining ring 1 from falling off the bearing inner ring after the axial force F3 gradually increases and first exceeds the maximum static friction force F1, thus making it impossible to remove the bearing inner ring from the shaft.

[0040] It is understood that reducing the top thickness of the semi-annular protrusion 102 can facilitate its insertion into the groove of the bearing inner ring, and the top of the semi-annular protrusion 102 can also be constructed to fit the shape of the groove in order to increase the contact area with the groove.

[0041] Secondly, refer to Figure 2 It can be seen that by adjusting the fastener 2, the two semi-abutment rings 101 are fitted onto one side periphery of the outer end face of the bearing inner ring. At this time, the inclined surface of the semi-annular protrusion 102 can fit against the periphery, so that the two semi-abutment rings 101 can clamp and support the bearing inner ring from the outside of the periphery. It is worth noting that, referring to Figure 3 It can be seen that the supporting perimeter should be the side away from the force-applying component 3 or the outer side along the direction of the axial force F3.

[0042] Understandably, the semi-annular protrusions 102 on the two semi-abutting rings 101 will generate friction at the point where they meet the periphery, thus limiting the sliding of the bearing inner ring relative to the fixed ring sleeve 1 on the inclined plane. It is worth noting that in this clamping method, the force-applying component 3 drives the fixed ring sleeve 1 to pull the bearing inner ring off the shaft. Therefore, it is not mandatory for the fastener 2 to ensure that the maximum static friction force F1 generated at the contact point where the bearing inner ring is squeezed by the two semi-abutting rings 101 is greater than the maximum static friction force F2 between the bearing inner ring and the shaft.

[0043] In this invention, the second clamping method is applicable not only to bearing inner rings with grooves for accommodating rolling elements on their outer end faces, but also to bearing inner rings without grooves on their outer end faces, such as thrust bearing inner rings. The first clamping method is also applicable to inner rings such as thrust bearings, but the semi-annular protrusion 102 may scratch the outer end face of the bearing inner ring, causing wear or deformation of the bearing inner ring.

[0044] At the same time, refer to Figure 2 It can be seen that either the first or second clamping method in this utility model can clamp bearing inner rings with an outer diameter not less than the diameter between the two semi-annular protrusions 102. This allows the fixing ring 1 to clamp bearing inner rings of different diameters.

[0045] In some embodiments, adjustment seats 4 are provided on both sides of the opening of the two semi-abutment rings 101, and fasteners 2 are provided on the two adjustment seats 4.

[0046] The adjusting seat 4 includes a rectangular block and a through hole on the rectangular block for the fastener 2 to pass through. The top surface of the rectangular block is coplanar with the plane of the half-abutment ring 101, so that the fastener 2 can be inserted into the through holes on the adjusting seat 4 on the same side of the two half-abutment rings 101.

[0047] Understandably, reference Figure 2 It can be seen that when the end faces of the two semi-abutting rings 101 are fitted together to form a closed fixed ring 1, the top surfaces of the corresponding adjusting seats 4 on both sides are fitted together, and the corresponding through holes can be automatically aligned, so that the ends are connected, so that the operator can easily insert the fastener 2 into the two corresponding through holes.

[0048] In some embodiments, reference Figure 3 It is known that the fastener 2 includes a threaded adjusting rod 201 and an adjusting nut 202. The end of the threaded adjusting rod 201 passes through two adjusting seats 4 and is connected to the adjusting nut 202.

[0049] In this utility model, by rotating the adjusting nut 202, the two halves of the abutment ring 101 are moved back and forth on the threaded adjusting rod 201, so as to make the two halves of the abutment ring 101 relatively close or relatively far apart, thereby achieving the clamping or loosening of the bearing inner ring.

[0050] In some embodiments, the force-applying component 3 includes a pull seat 301 and a lead screw 302 rotatably connected to the pull seat 301. The pull seat 301 is also provided with a plurality of connecting rods 303, and the plurality of connecting rods 303 are detachably connected to the fixing ring sleeve 1, so as to connect the force-applying component 3 to the fixing ring sleeve 1 after the fixing ring sleeve 1 clamps the inner ring of the bearing.

[0051] The pull base 301 includes a strip plate with multiple through holes. Multiple connecting rods 303 pass through the through holes and are detachably connected to fixing bolts 304, thereby achieving a detachable connection between the connecting rods 303 and the pull base 301 for easy replacement of damaged connecting rods 303. Of course, in some other embodiments, plates of other shapes, such as circular plates, can also be used, which will not be elaborated on further here.

[0052] In this invention, the operator applies torque to the lead screw 302, causing it to rotate. At this time, the limiting pull seats 301 of the multiple connecting rods 303 rotate with the lead screw 302, so that the pull seats 301 move axially on the lead screw 302 and away from the inner ring of the bearing, thereby driving the connecting rods 303 to move axially along the shaft, thereby applying an axial force F3 to the fixed ring sleeve 1.

[0053] In some embodiments, two connecting rods 303 are provided, and the two connecting rods 303 are equally spaced on both sides of the lead screw 302 so that the two connecting rods 303 can evenly share the tension applied by the lead screw 302 to the pull seat 301, so as to avoid the connecting rod 303 being damaged due to excessive force on one side of the pull rod.

[0054] In some embodiments, the fixing ring 1 is provided with two connecting holes 103, and the two connecting rods 303 are detachably connected to the two connecting holes 103.

[0055] The connection method can be either threaded or snap-fit. This invention preferably uses a threaded connection.

[0056] In some embodiments, the disassembly tooling for the bearing further includes an auxiliary force-applying component 5, which can also apply an axial force F3 to the retaining ring 1.

[0057] In some embodiments, the auxiliary force application member 5 includes a plurality of set screws 501, and each half abutment ring 101 is provided with a plurality of through holes at equal intervals along its circumference, and the plurality of set screws 501 are correspondingly disposed in the plurality of through holes.

[0058] The through hole is threadedly connected to the set screw 501.

[0059] In this invention, by abutting the end of each set screw 501 against the shaft seat, the operator applies torque to each set screw 501 to apply an axial force to the retaining ring 1 through the rotation of the set screw 501, thereby removing the bearing inner ring from the shaft.

[0060] It is understood that the auxiliary power component in this utility model can also remove the bearing inner ring from the shaft by applying axial force to the fixing ring 1 through the auxiliary power component when the working environment of the disassembly tooling cannot meet the requirements of the installation force application component 3.

[0061] The preferred embodiments of the present invention have been described in detail above with reference to the accompanying drawings; however, the present invention is not limited thereto. Within the scope of the technical concept of the present invention, various simple modifications can be made to the technical solution of the present invention. To avoid unnecessary repetition, the present invention will not describe the various possible combinations separately. However, these simple modifications and combinations should also be considered as the content disclosed in the present invention and are all within the protection scope of the present invention.

Claims

1. A bearing dismounting tool for dismounting a bearing inner ring from a shaft, characterized in that, The utility model relates to a dismounting tool for bearing, which comprises a fixed ring (1) and a force applying member (3). The fixed ring (1) comprises two half abutting rings (101) capable of clamping a bearing inner ring on the inner side. The force applying member (3) is used to apply an axial force to the fixed ring (1) to drive the bearing inner ring to move axially relative to the shaft. The inner end surface of each half abutting ring (101) is provided with a semicircular protrusion (102) for clamping the bearing inner ring.

2. A bearing dismounting tool according to claim 1, characterized in that Both sides of the opening of the two half abutting rings (101) are provided with adjusting seats (4), and the fastener (2) is arranged on the two adjusting seats (4).

3. The bearing dismounting tool according to claim 1, characterized in that The fastener (2) comprises a threaded adjusting rod (201) and an adjusting nut (202), and the end of the threaded adjusting rod (201) penetrates through the two adjusting seats (4) and is connected with the adjusting nut (202).

4. A bearing dismounting tool according to claim 3, characterized in that The force applying member (3) comprises a pull seat (301) and a screw rod (302) rotatably connected to the pull seat (301), and a plurality of connecting rods (303) are further arranged on the pull seat (301).

5. The bearing dismounting tool according to claim 1, characterized in that The connecting rod (303) is provided with two connecting rods (303) arranged on both sides of the screw rod (302).

6. A bearing dismounting tool according to claim 5, characterized in that The fixed ring (1) is provided with two connecting holes (103), and the two connecting rods (303) are detachably connected with the two connecting holes (103) correspondingly.

7. A bearing dismounting tool according to claim 6, characterized in that The connecting rod (303) is detachably connected with the pull seat (301).

8. A bearing dismounting tool according to claim 5, characterized in that The dismounting tool for bearing further comprises an auxiliary force applying member (5) capable of applying an axial force to the fixed ring (1).

9. A bearing dismounting tool according to any one of claims 1-8, characterized in that The auxiliary force applying member (5) comprises a plurality of jacks (501), and a plurality of through holes are equidistantly arranged on each half abutting ring (101) along the circumferential direction, and the plurality of jacks (501) are arranged in the plurality of through holes correspondingly.

10. A bearing dismounting tool according to claim 9, characterized in that ​

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