CN210686638U

CN210686638U - Structure for automatically eliminating bearing play of guide wheel

Info

Publication number: CN210686638U
Application number: CN201921676641.3U
Authority: CN
Inventors: 吕大伟
Original assignee: Suzhou Sanguang Science & Technology Co ltd
Current assignee: Suzhou Sanguang Science & Technology Co ltd
Priority date: 2019-10-09
Filing date: 2019-10-09
Publication date: 2020-06-05
Anticipated expiration: 2029-10-09

Abstract

The utility model discloses a guide wheel structure for automatically eliminating bearing play, which comprises a guide wheel, a guide wheel seat, a bearing group, a locking mechanism, a bearing inner sleeve, a bearing outer sleeve and an elastic compression assembly; the bearing group consists of a first bearing, a second bearing and a third bearing; the elastic compression assembly is arranged between the second bearing and the third bearing; the locking mechanism comprises a locking nut and a compression nut; the inner rings of the first bearing, the second bearing, the bearing inner sleeve and the third bearing are sequentially sleeved on the guide wheel and fixed through a locking nut at the rear end; the bearing outer sleeve is sleeved between the outer ring of the third bearing and the inner wall of the guide wheel seat and is in clearance fit; the outer rings of the first, second and third bearings are fixed through an elastic compression component, a bearing outer sleeve and a compression nut at the rear end. The elastic compression assembly generates outward thrust on the outer ring of the guide wheel bearing, and the outer ring of the third bearing is pushed to move by utilizing clearance fit between the outer ring of the third bearing and the bearing outer sleeve, so that the axial clearance of the bearing is eliminated.

Description

Structure for automatically eliminating bearing play of guide wheel

Technical Field

The utility model relates to a guide pulley bearing structure, especially an automatic bearing play structure of eliminating of guide pulley.

Background

In the guide wheel structure generally adopted at present, the precision of the guide wheel is deteriorated due to the play of the bearing and the gradual increase of the guide wheel due to the abrasion during the use process, so the guide wheel structure needs to be improved.

Disclosure of Invention

The utility model discloses the purpose is: the guide wheel automatic bearing play eliminating structure eliminates the axial play of the bearing through structural improvement.

The technical scheme of the utility model is that: a structure for automatically eliminating bearing play of a guide wheel comprises the guide wheel, a guide wheel seat, a bearing group and a locking mechanism, wherein the bearing group and the locking mechanism are sleeved between the guide wheel and the guide wheel seat; the bearing group consists of a first bearing, a second bearing and a third bearing, and is sequentially sleeved on the outer circumference of the guide wheel; the elastic compression assembly is mounted between the second bearing and the third bearing; the locking mechanism comprises a locking nut and a compression nut; the inner rings of the first bearing and the second bearing, the inner sleeve of the bearing and the inner ring of the third bearing are sequentially sleeved on the guide wheel and fixed through a locking nut at the rear end; the bearing outer sleeve is sleeved between the outer ring of the third bearing and the inner wall of the guide wheel seat and is in clearance fit; and the outer rings of the first bearing, the second bearing and the third bearing are fixed through an elastic compression assembly, a bearing outer sleeve and a compression nut at the rear end.

Preferably, the elastic compression assembly comprises a first retainer ring, an elastic washer and a second retainer ring; the first check ring is arranged between the outer ring of the second bearing and the bearing outer sleeve, the front end of the first check ring is attached to the rear side surface of the outer ring of the second bearing, and the rear end of the first check ring is attached to the front side surface of the bearing outer sleeve; the second retainer ring is arranged between the first retainer ring and the outer ring of the third bearing, the rear end face of the second retainer ring is attached to the outer ring of the third bearing, and the outer circumferential surface of the second retainer ring is attached to the inner wall of the bearing outer sleeve; the elastic washer is positioned in an annular cavity surrounded by the first retaining ring, the second retaining ring and the bearing outer sleeve.

Preferably, the tail end of the guide wheel is provided with an external thread, the locking nut is provided with an internal thread, and the locking nut is in threaded connection with the tail end of the guide wheel.

Preferably, the tail end of the guide wheel seat is provided with an internal thread, the compression nut is provided with an external thread, and the compression nut is in threaded connection with the tail end of the guide wheel seat.

Preferably, the elastic washer is a corrugated elastic washer.

Preferably, the front ends of the inner ring and the outer ring of the first bearing are respectively attached to the limiting bosses of the guide wheel and the guide wheel seat.

The utility model has the advantages that: the guide wheel structure is optimized, the first retaining ring, the second retaining ring and the wave-shaped gasket form an elastic compression assembly to generate outward thrust on the outer ring of the guide wheel bearing, and the outer ring of the third bearing is pushed to move by utilizing clearance fit between the outer ring of the third bearing and the bearing outer sleeve, so that the axial clearance of the bearing is eliminated.

Drawings

The invention will be further described with reference to the following drawings and examples:

fig. 1 is a schematic structural view of a structure for automatically eliminating bearing play of a guide wheel of the present invention;

wherein: 1. a guide wheel; 2. a guide wheel seat; 3. a bearing inner sleeve; 4. a bearing housing; 5. a resilient compression assembly; 51. a first retainer ring; 52. an elastic washer; 53. a second retainer ring; 6. a first bearing; 7. a second bearing; 8. a third bearing; 9. locking the nut; 10. and (5) pressing the nut.

Detailed Description

Example (b):

as shown in the attached drawing 1, the structure for automatically eliminating the bearing play of the guide wheel comprises a guide wheel 1, a guide wheel seat 2, a bearing group and a locking mechanism which are sleeved between the guide wheel 1 and the guide wheel seat 2, and further comprises a bearing inner sleeve 3, a bearing outer sleeve 4 and an elastic compression assembly 5; the bearing group consists of a first bearing 6, a second bearing 7 and a third bearing 8, and is sequentially sleeved on the outer circumference of the guide wheel 1; the elastic compression assembly 5 is mounted between the second bearing 7 and the third bearing 8; the locking mechanism comprises a locking nut 9 and a compression nut 10; the inner rings of the first bearing 6 and the second bearing 7, the inner sleeve 3 of the bearing and the inner ring of the third bearing 8 are sequentially sleeved on the guide wheel 1 and fixed through a locking nut 9 at the rear end; the bearing outer sleeve 4 is sleeved between the outer ring of the third bearing 8 and the inner wall of the guide wheel seat 2 and is in clearance fit; the outer rings of the first bearing 6, the second bearing 7 and the third bearing 8 are fixed through an elastic compression assembly 5, a bearing outer sleeve 4 and a compression nut 10 at the rear end. The elastic compression assembly 5 comprises a first retainer ring 51, an elastic washer 52 and a second retainer ring 53; the elastic washer 52 is a corrugated elastic washer; the first retainer ring 51 is arranged between the outer ring of the second bearing 7 and the bearing outer sleeve 4, the front end of the first retainer ring is attached to the rear side surface of the outer ring of the second bearing 7, and the rear end of the first retainer ring is attached to the front side surface of the bearing outer sleeve 4; the second retainer ring 53 is arranged between the first retainer ring 51 and the outer ring of the third bearing 8, the rear end face of the second retainer ring is attached to the outer ring of the third bearing 8, and the outer circumferential surface of the second retainer ring is attached to the inner wall of the bearing outer sleeve 4; the elastic washer 52 is located in an annular cavity enclosed by the first retainer 51, the second retainer 53 and the bearing housing 4.

Further, the tail end of the guide wheel 1 is provided with an external thread, the lock nut 9 is provided with an internal thread, and the lock nut 9 is in threaded connection with the tail end of the guide wheel 1. The tail end of the guide wheel seat 2 is provided with an internal thread, the compression nut 10 is provided with an external thread, and the compression nut 10 is in threaded connection with the tail end of the guide wheel seat 2.

The front ends of the inner ring and the outer ring of the first bearing 6 are respectively attached to the limiting bosses of the guide wheel 1 and the guide wheel seat 2, the first bearing is installed and positioned through the limiting bosses, then the second bearing 7, the elastic compression assembly 5 and the third bearing 8 are installed again, and the locking nut 9 is fixedly connected to the tail end of the guide wheel 1 through threads; finally, the compression nut 10 is installed.

The utility model discloses an automatic bearing play structure of eliminating of guide pulley, through the optimization of going on to the guide pulley structure, first retaining ring, second retaining ring and wave mode packing ring constitute the elastic compression subassembly and produce outside thrust to guide pulley bearing outer lane, utilize the clearance fit between the outer lane of third bearing and the bearing overcoat, promote the outer lane removal of third bearing to eliminate the axial play of bearing.

The above embodiments are merely illustrative of the principles and effects of the present invention, and are not to be construed as limiting the invention. Modifications and variations can be made to the above-described embodiments by those skilled in the art without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which may be made by those skilled in the art without departing from the spirit and technical concepts of the present invention be covered by the claims of the present invention.

Claims

1. The utility model provides an automatic bearing play structure of eliminating of guide pulley, includes guide pulley (1), guide pulley seat (2), suit and the bearing group and the locking mechanism between guide pulley (1) and guide pulley seat (2), its characterized in that: the device also comprises a bearing inner sleeve (3), a bearing outer sleeve (4) and an elastic compression assembly (5); the bearing group consists of a first bearing (6), a second bearing (7) and a third bearing (8), and is sequentially sleeved on the outer circumference of the guide wheel (1); the elastic compression assembly (5) is arranged between the second bearing (7) and the third bearing (8); the locking mechanism comprises a locking nut (9) and a compression nut (10); the inner rings of the first bearing (6) and the second bearing (7), the inner sleeve (3) of the bearing and the inner ring of the third bearing (8) are sequentially sleeved on the guide wheel (1) and fixed through a locking nut (9) at the rear end; the bearing outer sleeve (4) is sleeved between the outer ring of the third bearing (8) and the inner wall of the guide wheel seat (2) and is in clearance fit; the outer rings of the first bearing (6), the second bearing (7) and the third bearing (8) are fixed through an elastic compression assembly (5), a bearing outer sleeve (4) and a compression nut (10) at the rear end.

2. The structure for automatically eliminating bearing play of a guide wheel according to claim 1, wherein: the elastic compression assembly (5) comprises a first retainer ring (51), an elastic gasket (52) and a second retainer ring (53); the first retainer ring (51) is arranged between the outer ring of the second bearing (7) and the bearing outer sleeve (4), the front end of the first retainer ring is attached to the rear side surface of the outer ring of the second bearing (7), and the rear end of the first retainer ring is attached to the front side surface of the bearing outer sleeve (4); the second retainer ring (53) is arranged between the first retainer ring (51) and the outer ring of the third bearing (8), the rear end face of the second retainer ring is attached to the outer ring of the third bearing (8), and the outer circumferential surface of the second retainer ring is attached to the inner wall of the bearing outer sleeve (4); the elastic gasket (52) is positioned in an annular cavity surrounded by the first retaining ring (51), the second retaining ring (53) and the bearing outer sleeve (4).

3. The structure for automatically eliminating bearing play of a guide wheel according to claim 1, wherein: the tail end of guide pulley (1) is equipped with the external screw thread, lock nut (9) are equipped with the internal thread, and lock nut (9) threaded connection is at the tail end of guide pulley (1).

4. The structure for automatically eliminating bearing play of a guide wheel according to claim 1, wherein: the tail end of the guide wheel seat (2) is provided with an internal thread, the compression nut (10) is provided with an external thread, and the compression nut (10) is in threaded connection with the tail end of the guide wheel seat (2).

5. The structure for automatically eliminating bearing play of a guide pulley according to claim 2, wherein: the elastic washer (52) is a corrugated elastic washer.

6. The structure for automatically eliminating bearing play of a guide wheel according to claim 1, wherein: the front ends of the inner ring and the outer ring of the first bearing (6) are respectively attached to the limiting bosses of the guide wheel (1) and the guide wheel seat (2).