CN215432411U

CN215432411U - Main cone bearing inner ring press-fitting guiding and positioning mechanism

Info

Publication number: CN215432411U
Application number: CN202121876129.0U
Authority: CN
Inventors: 孔银响; 陈家鲁; 张亮; 吴恩泽; 刘春光; 杨栋; 杨树春; 王翠
Original assignee: Qingdao Qingte Zhongli Axle Co ltd
Current assignee: Qingdao Qingte Zhongli Axle Co ltd
Priority date: 2021-08-12
Filing date: 2021-08-12
Publication date: 2022-01-07
Anticipated expiration: 2031-08-12

Abstract

The utility model belongs to the technical field of bearing inner ring press-fitting guiding and positioning, and particularly relates to a main cone bearing inner ring press-fitting guiding and positioning mechanism. This positioning mechanism includes pressure equipment mechanism, pressure equipment mechanism down, it includes the fore-set to go up pressure equipment mechanism, the die sleeve, a moulding section of thick bamboo upper end is located the die sleeve inside and with die sleeve interference fit, the die sleeve is established in the fore-set outside with the die sleeve cover, the fore-set upper end and die sleeve sliding connection, the fore-set bottom is the cone of invering, pressure equipment mechanism is including supporting the base down, the traveller, the lid seat, it is top, support the inside cavity of having seted up of base, the traveller is located the cavity of supporting the base and with support base sliding connection, be equipped with the spring between the cavity bottom of traveller bottom and support base, lid seat bottom and traveller top joint, top is the cone, it is located inside and with lid seat sliding connection to top be located the lid seat, top is located the lid seat outside. The positioning mechanism solves the problem that the inner ring of the main cone bearing can not be accurately positioned before press mounting.

Description

Main cone bearing inner ring press-fitting guiding and positioning mechanism

Technical Field

The utility model belongs to the technical field of bearing inner ring press-fitting guiding and positioning, and particularly relates to a main cone bearing inner ring press-fitting guiding and positioning mechanism.

Background

The press mounting of the inner ring of the main cone bearing is an important key process operation in the main reducer assembling process, and the quality level of the main reducer assembly is directly influenced. The press mounting of the inner ring of the main cone bearing is a press mounting with higher failure rate in a main assembly line, and mainly shows that the upper press mounting mechanism and the lower press mounting mechanism are not coaxial, and the press mounting mechanism is abnormally stressed to cause the failures of the lower press mounting mechanism, such as damage and the like. In case of a fault, the press mounting can directly lead to the stagnation of a production line, and the increase of the yield of a main assembly line and the improvement of the comprehensive efficiency of equipment are restricted.

The press fitting of the inner ring of the conventional main cone bearing needs manual participation, the main cone is manually placed on a lower press fitting structure during press fitting, the main cone is not guided and fixed, the center of the main cone and the center of the press fitting are not easy to align, and the smooth press fitting is ensured by means of sufficient safety clearance between the press fitting and the main cone, so that the problems that the press fitting of the inner ring of the main cone bearing is not in place, the stress of equipment is abnormal, the failure rate is high, the bearing is stiff, the noise is high and the like can be caused.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a main cone bearing inner ring press-fitting guiding and positioning mechanism which is used for accurately positioning before press-fitting of a main cone bearing inner ring, so that the center of a main cone is coincided with the center of the press-fitting, automation of the main cone bearing inner ring in the press-fitting process is realized, and the problems that the center of the main cone and the center of the press-fitting are not easy to align in the conventional press-fitting of the main cone bearing inner ring and the labor intensity of workers is high are solved.

The above object of the present invention is achieved by the following technical solutions:

a main cone bearing inner ring press-mounting guiding and positioning mechanism comprises an upper press-mounting mechanism and a lower press-mounting mechanism, wherein the upper press-mounting mechanism is positioned at the top of a main cone, and the lower press-mounting mechanism is positioned at the bottom of the main cone;

the upper press-fitting mechanism comprises a top column, a press mold sleeve and a press mold cylinder, wherein the upper end of the press mold cylinder is positioned at the lower end inside the press mold sleeve, the press mold cylinder is in interference fit with the press mold sleeve, the press mold sleeve and the press mold cylinder are sleeved outside the top column, the upper end of the top column is in sliding connection with the press mold sleeve, a clamp spring is arranged inside the lower end of the press mold sleeve, the diameter of the clamp spring is larger than that of the top column, a gap is formed between the lower end of the top column and the press mold cylinder, and the bottom of the top column is an inverted cone;

the lower press-fitting mechanism comprises a supporting base, a sliding column, a cover seat and a tip, wherein a cavity is formed in the supporting base, the sliding column is located in the cavity in the supporting base and is connected with the supporting base in a sliding mode, a section of spring is placed between the bottom of the sliding column and the bottom of the cavity in the supporting base, two ends of the spring are perpendicular to the bottom of the sliding column and the bottom of the cavity in the supporting base respectively, the bottom of the cover seat is connected with the top of the sliding column in a clamping mode, the top of the tip is a cone, the tip is located in the cover seat and is connected with the cover seat in a sliding mode, and the top of the tip is located outside the cover seat.

The preferred scheme is as follows:

preferably: the support pillar comprises a first connecting pillar and a second connecting pillar, the diameter of the first connecting pillar is larger than that of the second connecting pillar, the bottom of the first connecting pillar is fixedly connected with the top of the second connecting pillar, the bottom of the second connecting pillar is an inverted cone, the first connecting pillar is connected with the compression die sleeve in a sliding mode, the diameter of the second connecting pillar is smaller than that of the compression die sleeve, and a gap exists between the second connecting pillar and the compression die sleeve.

Preferably: the die sleeve comprises a first connecting sleeve, a second connecting sleeve and a third connecting sleeve, wherein the second connecting sleeve is positioned between the first connecting sleeve and the third connecting sleeve, the first connecting sleeve, the second connecting sleeve and the third connecting sleeve are integrally formed end to end, the outer diameter of the first connecting sleeve and the outer diameter of the third connecting sleeve are both larger than the outer diameter of the second connecting sleeve, the inner diameter of the first connecting sleeve, the inner diameter of the third connecting sleeve and the inner diameter of the upper end of the second connecting sleeve are equal, the inner diameter of the upper end of the second connecting sleeve is smaller than the inner diameter of the lower end of the second connecting sleeve, the first connecting sleeve and the external connection part of the second connecting sleeve form a right angle, the second connecting sleeve and the external connection part of the third connecting sleeve form an obtuse angle, and the inner side of the top end of the first connecting sleeve is provided with a retaining ring.

Preferably: the die pressing cylinder comprises a first connecting cylinder and a second connecting cylinder, the bottom of the first connecting cylinder and the top of the second connecting cylinder are integrally formed, the external connection position of the first connecting cylinder and the second connecting cylinder is a right angle, the diameter of the first connecting cylinder is smaller than that of the second connecting cylinder, the first connecting cylinder is located inside the third connecting sleeve, the outer diameter of the first connecting cylinder is matched with the inner diameter of the lower end of the third connecting sleeve, and the first connecting cylinder is in interference fit with the third connecting sleeve and is fixedly connected with the third connecting sleeve through screws.

Preferably: the cavity that supports the inside setting of base from top to bottom divides first cavity, second cavity, third cavity, the fourth cavity that communicates each other into in proper order, first cavity is located support the inside top of base, the fourth cavity is located support the inside bottom of base, the diameter of second cavity is greater than the diameter of fourth cavity, the diameter of third cavity is greater than the diameter of second cavity, the diameter of first cavity is greater than the diameter of third cavity, the second cavity with the third cavity upper end corresponds the outside of supporting the base is equipped with the handle.

Preferably: the outer diameter of the upper end of the sliding column is smaller than that of the lower end of the sliding column, the outer junction between the upper end of the sliding column and the lower end of the sliding column is a right angle, the outer diameter of the upper end of the sliding column is matched with the diameter of the second cavity, the outer diameter of the lower end of the sliding column is matched with that of the third cavity, cavities are formed in the inner portion of the upper end of the sliding column and the inner portion of the lower end of the sliding column, the inner cavity of the upper end of the sliding column is not communicated with the inner cavity of the lower end of the sliding column, the longitudinal section of the inner cavity of the upper end of the sliding column is in a T shape, the longitudinal section of the inner cavity of the lower end of the sliding column is in an inverted T shape, and the spring is vertically placed between the fourth cavity and the inner cavity of the lower end of the sliding column.

Preferably: the outer diameter of the cover seat is equal to that of the top end of the sliding column, the cover seat is fixedly connected with the sliding column through a bolt, a cavity is formed in the cover seat, the cavity formed in the cover seat is inverted T-shaped, and the diameter of the bottom end of the cavity in the cover seat is equal to that of the bottom end of the cavity in the upper end of the sliding column.

Preferably: the outer diameter of the upper end of the center is matched with the diameter of the upper end of the inner cavity of the cover seat, and the outer diameter of the lower end of the center is matched with the diameter of the lower end of the inner cavity of the cover seat.

In conclusion, the utility model has the following beneficial effects:

the main cone bearing inner ring press-fitting guiding and positioning mechanism has the advantages of simple operation, low labor intensity and high automation degree, the top post in the upper press-fitting mechanism and the top post in the lower press-fitting mechanism accurately position the bearing inner ring of the main cone from the upper direction and the lower direction, so that the center of the main cone is consistent with the press-fitting center, the bottom of the press die sleeve is contacted with the top of the main cone, the top post is always consistent with the bearing inner ring of the main cone in the press-fitting process, the top post is ensured not to be damaged and deformed by external force, the top post is not easy to fall off when sliding in the press die sleeve by the snap spring and the check ring, the press die sleeve is in clearance fit with the press die sleeve and is fixedly connected by the screw, the stress of the whole upper press-fitting mechanism can be ensured to be uniform and stable, the spring arranged in the support base can buffer the pressure from the slide post on one hand, and the slide post can stably and uniformly slide in the support base after the top post and the bearing inner ring of the main cone are positioned on the other hand, the top of the center is positioned outside the cover seat and is suitable for positioning the inner rings of the bearings of different models, the bearing press-fitting quality and the assembly quality of the main reducer assembly are improved, and the equipment damage and the equipment failure rate are reduced.

Drawings

FIG. 1 is a schematic sectional view I of the embodiment;

FIG. 2 is a schematic sectional view II of the embodiment;

FIG. 3 is a schematic sectional view III of the embodiment.

In the figure, 1, a top column; 2. pressing a die sleeve; 3. pressing a mold cylinder; 4. a support base; 5. a traveler; 6. a cover seat; 7. a tip; 8. a clamp spring; 9. a retainer ring; 10. a spring; 11. a first connecting column; 12. a second connecting column; 13. a first connecting sleeve; 14. a second connecting sleeve; 15. a third connecting sleeve; 16. a first connecting cylinder; 17. a second connecting cylinder; 18. a first cavity; 19. a second cavity; 20. a third cavity; 21. a fourth cavity; 22. a handle; 23. and (4) a main cone.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.

In which like parts are designated by like reference numerals. It should be noted that the terms "upper", "outer", "inner", "outer", "top", "bottom", "top" and "bottom" used in the following description refer to directions in the drawings, but are not limited thereto.

As shown in fig. 1-3, a main cone bearing inner ring press-fitting guiding and positioning mechanism comprises an upper press-fitting mechanism and a lower press-fitting mechanism, wherein the upper press-fitting mechanism is located at the top of a main cone 23, the lower press-fitting mechanism is located at the bottom of the main cone 23, the upper press-fitting mechanism comprises a support pillar 1, a press die sleeve 2 and a press die cylinder 3, and the lower press-fitting mechanism comprises a support base 4, a sliding pillar 5, a cover base 6 and a tip 7.

The outer side of the ejection column 1 is sleeved with the pressing mold sleeve 2 and the pressing mold sleeve 3, the ejection column 1 comprises a first connecting column 11 and a second connecting column 12, the diameter of the first connecting column 11 is larger than that of the second connecting column 12, the bottom of the first connecting column 11 is fixedly connected with the top of the second connecting column 12, the bottom of the second connecting column 12 is an inverted cone, the cone at the bottom of the second connecting column 12 guides and positions the center of the main cone 23 from the upper side of the main cone 23, the first connecting column 11 is in sliding connection with the pressing mold sleeve 2, the first connecting column 11 slides relative to the inner wall of the pressing mold sleeve 2, the diameter of the second connecting column 12 is smaller than that of the pressing mold sleeve 3, a gap exists between the second connecting column 12 and the pressing mold sleeve 2, and when the first connecting column 11 slides relative to the pressing mold sleeve 2, the second connecting column 12 cannot contact with the inner wall of the pressing mold sleeve 2 and the inner wall of the pressing mold sleeve 3.

The die sleeve 2 comprises a first connecting sleeve 13, a second connecting sleeve 14 and a third connecting sleeve 15, the second connecting sleeve 14 is positioned between the first connecting sleeve 13 and the third connecting sleeve 15, the first connecting sleeve 13, the second connecting sleeve 14 and the third connecting sleeve 15 are integrally formed end to end, the outer diameter of the first connecting sleeve 13 and the outer diameter of the third connecting sleeve 15 are both larger than the outer diameter of the second connecting sleeve 14, the inner diameter of the first connecting sleeve 13, the inner diameter of the third connecting sleeve 15 and the inner diameter of the upper end of the second connecting sleeve 14 are equal, the inner diameters are equal, so that the fluency when the die sleeve 2 and the first connecting column 11 slide relatively can be ensured, the inner diameter of the upper end of the second connecting sleeve 14 is smaller than the inner diameter of the lower end of the second connecting sleeve 14, the external connection position of the first connecting sleeve 13 and the second connecting sleeve 14 forms a right angle, the external connection position of the second connecting sleeve 14 and the third connecting sleeve 15 forms an obtuse angle, a retaining ring 9 is arranged on the inner side of the top end of the first connecting sleeve 13, the inside of the third connecting sleeve 15 is provided with a clamp spring 8, and the diameter of the clamp spring 8 is larger than that of the support pillar 1. Retaining ring 9 and jump ring 8 are injectd first spliced pole 11 simultaneously from the upper end and the lower extreme of die sleeve 2 respectively and are followed the slip length when the inner wall of die sleeve 2 slides, jump ring 8 can be when first spliced pole 11 slides down along the 2 inner walls of die sleeve, block the bottom card of first spliced pole 11 in jump ring 8 department, prevent first spliced pole 11 to continue to slide down, thereby make die sleeve 2 to the 3 transmission effort of die sleeve, effectively avoided fore-set 1 because of external force to the impaired condition of extrusion that the main cone 23 caused when fixing a position the center of main cone 23.

The die pressing cylinder 3 comprises a first connecting cylinder 16, a second connecting cylinder 17, the bottom of the first connecting cylinder 16 and the top of the second connecting cylinder 17 are integrally formed, the external connection part of the first connecting cylinder 16 and the second connecting cylinder 17 is a right angle, the diameter of the first connecting cylinder 16 is smaller than that of the second connecting cylinder 17, the first connecting cylinder 16 is located inside the third connecting sleeve 15, the outer diameter of the first connecting cylinder 16 is matched with the inner diameter of the lower end of the third connecting sleeve 15, the first connecting cylinder 16 is in interference fit with the third connecting sleeve 15 and is fixedly connected with the third connecting sleeve through screws, the first connecting cylinder 16 and the third connecting sleeve 15 are fixedly connected with each other and then jointly bear the acting force for downwards extruding the main cone 23, the first connecting cylinder 16 and the third connecting sleeve 15 cannot be separated after being stressed, and the firmness and the stability are strong.

The cavity has been seted up to the inside of supporting base 4, traveller 5 is located the inside cavity of supporting base 4, traveller 5 and the sliding connection of supporting base 4, the cavity that supports the inside of offering of base 4 from top to bottom divides into the first cavity 18 that communicates each other in proper order, second cavity 19, third cavity 20, fourth cavity 21, first cavity 18 is located the inside top of supporting base 4, fourth cavity 21 is located the inside bottom of supporting base 4, the diameter of second cavity 19 is greater than the diameter of fourth cavity 21, the diameter of third cavity 20 is greater than the diameter of second cavity 19, the diameter of first cavity 18 is greater than the diameter of third cavity 20, the outside of the corresponding support base 4 in second cavity 19 and the 20 upper ends of third cavity is equipped with handle 22.

The outer diameter of the upper end of the sliding column 5 is smaller than that of the lower end of the sliding column 5, the outer junction between the upper end of the sliding column 5 and the lower end of the sliding column 5 is in a right angle, the outer diameter of the upper end of the sliding column 5 is matched with that of the second cavity 19, the outer diameter of the lower end of the sliding column 5 is matched with that of the third cavity 20, when the lower end of the sliding column 5 slides in the third cavity 20, the outer diameter of the upper end of the sliding column 5 is matched with that of the second cavity 19, so that the sliding column 5 has certain guiding and sliding direction limiting functions when sliding in the supporting base 4, the position deviation of the sliding column 5 during sliding is avoided, cavities are respectively arranged in the inner part of the upper end of the sliding column 5 and the inner part of the lower end of the sliding column 5, the inner cavity in the upper end of the sliding column 5 is not communicated with the inner cavity in the lower end of the sliding column 5, the longitudinal section of the inner cavity in the upper end of the sliding column 5 is in a T shape, and the longitudinal section of the inner cavity in the lower end of the sliding column 5 is in an inverted T shape, a length of spring 10 is vertically disposed between the fourth cavity 21 and the interior cavity at the lower end of the spool 5. The spool 5 is slid downward inside the support base 4 by an external force, the spring 10 is compressed and applies a reverse elastic force to the spool 5, and the spool 5 is slid upward to an initial position by the elastic force of the spring 10 after the sliding is finished.

The outer diameter of the cover seat 6 is equal to the outer diameter of the top end of the sliding column 5, the bottom of the cover seat 6 is clamped with the top of the sliding column 5, the cover seat 6 is fixedly connected with the sliding column 5 through bolts, a cavity is formed in the cover seat 6, the cavity formed in the cover seat 6 is in an inverted T shape, the diameter of the bottom end of the cavity in the cover seat 6 is equal to the diameter of the bottom end of the cavity in the upper end of the sliding column 5, the top of the tip 7 is in a cone shape, the cone at the top of the tip 7 positions and guides the center of the main cone 23 from the bottom direction of the main cone 23, the outer diameter of the upper end of the tip 7 is matched with the diameter of the upper end of the cavity in the cover seat 6, the outer diameter of the lower end of the tip 7 is matched with the diameter of the lower end of the cavity in the cover seat 6, the tip 7 is located in the cavity formed in the cover seat 6, the tip 7 is slidably connected with the cover seat 6, the top of the cover seat 6 is located outside the cover seat 6, and slides along the inner wall of the tip 7, thereby leading and the location to the main cone 23 center of different models, top 7 when inside the slip of lid seat 6, the external diameter of top 7 upper end and the diameter phase-match of the inside cavity upper end of lid seat 6 guarantee that top 7 can not take place the skew of slip direction when sliding to can carry out accurate location to main cone 23.

The specific implementation process comprises the following steps:

firstly, horizontally placing a lower press-mounting mechanism on a platform, placing a main cone 23 on the top of a cover seat 6 to align the top of a tip 7 with the center of the main cone 23, contacting the top of the cover seat 6 with the main cone 23, then placing an upper press-mounting mechanism on the top of the main cone 23 to align the bottom of a top column 1 with the center of the main cone 23, and contacting the bottom of a pressure die cylinder 3 with the main cone 23; at this time, a certain external force is applied to the top of the die sleeve 2, the first connecting post 11 of the top post 1 slides relative to the inner wall of the die sleeve 2, the die sleeve 2 slides downwards, the first connecting post 11 of the top post 1 slides upwards along the inner wall of the die sleeve 2, the die cylinder 3 is tightly pressed against the main cone 23 by the force transmitted from the die sleeve 2, the main cone 23 is pressed by the force transmitted from the die cylinder 3, the force is transmitted to the cover seat 6, the cover seat 6 slides relative to the tip 7 after being stressed, the cover seat 6 slides downwards, the tip 7 slides upwards, the cover seat 6 pushes the sliding column 5 to slide downwards in the supporting base 4 while sliding downwards, the spring 10 is gradually compressed along with the downward sliding of the sliding column 5, the upper press-mounting mechanism and the lower press-mounting mechanism complete the up-and-down guiding and positioning of the inner ring of the bearing of the main cone 23 after the lower end of the first connecting column 11 of the ejection column 1 slides to the clamp spring 8.

The present embodiments are illustrative, but not restrictive, and changes, modifications, additions, and substitutions may be made within the spirit and scope of the present invention, and those skilled in the art may make modifications to the embodiments as required without any inventive contribution thereto after reading the present specification, but within the scope of the claims of the present invention.

Claims

1. The utility model provides a main cone bearing inner circle pressure equipment guiding orientation mechanism which characterized in that: the device comprises an upper press-fitting mechanism and a lower press-fitting mechanism, wherein the upper press-fitting mechanism is positioned at the top of a main cone (23), and the lower press-fitting mechanism is positioned at the bottom of the main cone (23);

the upper press-fitting mechanism comprises a top column (1), a press mold sleeve (2) and a press mold cylinder (3), wherein the upper end of the press mold cylinder (3) is located at the lower end inside the press mold sleeve (2), the press mold cylinder (3) is in interference fit with the press mold sleeve (2), the press mold sleeve (2) and the press mold cylinder (3) are sleeved outside the top column (1), the upper end of the top column (1) is in sliding connection with the press mold sleeve (2), a clamp spring (8) is arranged inside the lower end of the press mold sleeve (2), the diameter of the clamp spring (8) is larger than that of the top column (1), a gap is reserved between the lower end of the top column (1) and the press mold cylinder (3), and the bottom of the top column (1) is an inverted cone;

the lower press-mounting mechanism comprises a supporting base (4), a sliding column (5), a cover seat (6) and a tip (7), a cavity is arranged in the supporting base (4), the sliding column (5) is positioned in the cavity in the supporting base (4), the sliding column (5) is connected with the supporting base (4) in a sliding way, a section of spring (10) is arranged between the bottom of the sliding column (5) and the bottom of the hollow cavity of the supporting base (4), two ends of the spring (10) are respectively vertical to the bottom of the sliding column (5) and the bottom of the hollow cavity of the supporting base (4), the bottom of the cover seat (6) is clamped with the top of the sliding column (5), the top of the tip (7) is a cone, the tip (7) is located inside the cover seat (6) and is in sliding connection with the cover seat (6), and the top of the tip (7) is located outside the cover seat (6).

2. The main cone bearing inner ring press-fitting guiding and positioning mechanism according to claim 1, characterized in that: the support pillar (1) comprises a first connecting pillar (11) and a second connecting pillar (12), the diameter of the first connecting pillar (11) is larger than that of the second connecting pillar (12), the bottom of the first connecting pillar (11) is fixedly connected with the top of the second connecting pillar (12), the bottom of the second connecting pillar (12) is an inverted cone, the first connecting pillar (11) is in sliding connection with a die sleeve (2), the diameter of the second connecting pillar (12) is smaller than that of a die sleeve (3), and the second connecting pillar (12) is spaced from the die sleeve (2).

3. The main cone bearing inner ring press-fitting guiding and positioning mechanism as claimed in claim 2, wherein: the die sleeve (2) comprises a first connecting sleeve (13), a second connecting sleeve (14) and a third connecting sleeve (15), wherein the second connecting sleeve (14) is positioned between the first connecting sleeve (13) and the third connecting sleeve (15), the first connecting sleeve (13), the second connecting sleeve (14) and the third connecting sleeve (15) are integrally formed end to end, the outer diameter of the first connecting sleeve (13) and the outer diameter of the third connecting sleeve (15) are both larger than the outer diameter of the second connecting sleeve (14), the inner diameter of the first connecting sleeve (13), the inner diameter of the third connecting sleeve (15) and the inner diameter of the upper end of the second connecting sleeve (14) are equal, the inner diameter of the upper end of the second connecting sleeve (14) is smaller than the inner diameter of the lower end of the second connecting sleeve (14), and the external connection part of the first connecting sleeve (13) and the second connecting sleeve (14) forms a right angle, the outer connecting part of the second connecting sleeve (14) and the third connecting sleeve (15) forms an obtuse angle, and a retainer ring (9) is arranged on the inner side of the top end of the first connecting sleeve (13).

4. The main cone bearing inner ring press-fitting guiding and positioning mechanism as claimed in claim 3, wherein: the die pressing cylinder (3) comprises a first connecting cylinder (16) and a second connecting cylinder (17), the bottom of the first connecting cylinder (16) is integrally formed with the top of the second connecting cylinder (17), the external connection position of the first connecting cylinder (16) and the second connecting cylinder (17) is a right angle, the diameter of the first connecting cylinder (16) is smaller than that of the second connecting cylinder (17), the first connecting cylinder (16) is located inside the third connecting cylinder (15), the outer diameter of the first connecting cylinder (16) is matched with the inner diameter of the lower end of the third connecting cylinder (15), and the first connecting cylinder (16) is in interference fit with the third connecting cylinder (15) and is fixedly connected through screws.

5. The main cone bearing inner ring press-fitting guiding and positioning mechanism according to claim 1, characterized in that: the utility model discloses a support base, including support base (4), first cavity (18), second cavity (19), third cavity (20), fourth cavity (21) that support base (4) inside was seted up from top to bottom in proper order, first cavity (18) are located support base (4) inside top, fourth cavity (21) are located support base (4) inside bottom, the diameter of second cavity (19) is greater than the diameter of fourth cavity (21), the diameter of third cavity (20) is greater than the diameter of second cavity (19), the diameter of first cavity (18) is greater than the diameter of third cavity (20), second cavity (19) with third cavity (20) upper end corresponds the outside of supporting base (4) is equipped with handle (22).

6. The main cone bearing inner ring press-fitting guiding and positioning mechanism according to claim 5, characterized in that: the outer diameter of the upper end of the sliding column (5) is smaller than that of the lower end of the sliding column (5), the external junction between the upper end of the sliding column (5) and the lower end of the sliding column (5) is in a right angle, the outer diameter of the upper end of the sliding column (5) is matched with the diameter of the second cavity (19), the outer diameter of the lower end of the sliding column (5) is matched with the diameter of the third cavity (20), cavities are respectively arranged in the upper end of the sliding column (5) and the lower end of the sliding column (5), the inner cavity at the upper end of the sliding column (5) is not communicated with the inner cavity at the lower end of the sliding column (5), the longitudinal section of the inner cavity at the upper end of the sliding column (5) is in a T shape, the longitudinal section of the inner cavity at the lower end of the sliding column (5) is in an inverted T shape, the spring (10) is vertically placed between the fourth cavity (21) and the inner cavity at the lower end of the sliding column (5).

7. The main cone bearing inner ring press-fitting guiding and positioning mechanism according to claim 6, characterized in that: the outer diameter of the cover seat (6) is equal to that of the top end of the sliding column (5), the cover seat (6) is fixedly connected with the sliding column (5) through a bolt, a cavity is formed in the cover seat (6), the cavity formed in the cover seat (6) is inverted T-shaped, and the diameter of the bottom end of the cavity in the cover seat (6) is equal to that of the bottom end of the cavity in the upper end of the sliding column (5).

8. The main cone bearing inner ring press-fitting guiding and positioning mechanism according to claim 7, characterized in that: the outer diameter of the upper end of the center (7) is matched with the diameter of the upper end of the inner cavity of the cover seat (6), and the outer diameter of the lower end of the center (7) is matched with the diameter of the lower end of the inner cavity of the cover seat (6).