CN210003675U

CN210003675U - Combined double-external-tooth double-row eccentric thrust angular contact ball slewing bearing

Info

Publication number: CN210003675U
Application number: CN201920040110.9U
Authority: CN
Inventors: 王忠波
Original assignee: Dalian Tracy Rotary Bearing Co Ltd
Current assignee: Dalian Tracy Rotary Bearing Co Ltd
Priority date: 2019-01-10
Filing date: 2019-01-10
Publication date: 2020-01-31
Anticipated expiration: 2029-01-10

Abstract

The utility model discloses a modular two external tooth biserial eccentric thrust angular contact ball slewing bearing, including contact balls and the second row contact ball, 0 contact ball outside is equipped with 1 outer lane and second outer lane, 2 contact ball inboard is equipped with the oil duct installation circle, 3 contact ball and oil duct installation circle side are equipped with the second row contact ball, contact ball side is equipped with the second outer tooth in the second row, second outer tooth upper end is equipped with the third outer lane, contact ball inboard is equipped with the inner circle in the second row, second outer tooth lower extreme side is equipped with the external tooth, external tooth upper end is equipped with the second inner circle, second inner circle upper end is equipped with the third inner circle external tooth and the slewing bearing of the compound two external tooth biserial eccentric thrust ball form of this slewing bearing through row contact ball, second row contact ball external tooth and the second outer tooth biserial eccentric thrust ball form of second row, increase the biggest load of whole bearing, connect stably, can not take place the rotational deviation.

Description

Combined double-external-tooth double-row eccentric thrust angular contact ball slewing bearing

Technical Field

The utility model relates to the technical field of bearings, especially, relate to modular two external tooth biserial eccentric thrust angular contact ball slewing bearing.

Background

The rotary support is large bearings capable of bearing comprehensive loads, can bear larger axial and radial loads and overturning moments simultaneously, is called a turntable bearing, and is called a rotary support and a slewing support by some people, the rotary support is applied in the actual industry in range, is called a joint of a machine, is an important transmission part required by machinery which needs to do relative slewing motion between two objects and simultaneously bear axial force, radial force and overturning moment, along with the rapid development of the machinery industry, the rotary support is applied in industries such as ship equipment, engineering machinery, light-duty machinery, metallurgical machinery, medical machinery, industrial machinery and the like in range, along with the continuous expansion of the application field of the rotary support, the traditional rotary support structure cannot meet the requirement of high-speed development of the industry, for example, in a structure needing double external tooth connection, two independent rotary supports are mostly adopted, but the connection tightness between the two rotary supports is poor, the integral stability and the stress stability of the support is easy to cause the situations that the self-centering and the rotary support cannot be centered in the installation process.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a modular two external teeth biserial eccentric thrust angular contact ball slewing bearing, possess stability height, the high characteristics of adaptation degree have solved the problem among the prior art.

In order to achieve the purpose, the utility model provides a combined two external tooth biserial eccentric thrust angular contact ball slewing bearing, including contact ball and second row contact ball, 0 contact ball outside is equipped with 1 outer lane and second outer lane, 2 outer lane is located second outer lane lower extreme, be equipped with the end face seal circle on 3 outer lane and the second outer lane, contact ball inboard is equipped with the oil duct installing circle, contact ball and oil duct installing circle side are equipped with the second row contact ball, second row contact ball both ends are equipped with the oil duct seal circle, second row contact ball edge is connected with the spacing block, second row contact ball side is equipped with the second outer tooth, the second outer tooth upper end is equipped with the third outer lane, second row contact ball inboard is equipped with inner lane, second outer tooth lower extreme side is equipped with the external tooth, upper end is equipped with the second inner lane, second outer tooth upper end is equipped with the third inner lane, third row contact ball edge is equipped with the second outer tooth lower extreme ball lower extreme limit circle.

Preferably, the th row of contact balls and the second row of contact balls are both composed of two single contact balls.

Preferably, the oil passage is arranged in the middle of the oil passage mounting ring, and the oil passages are connected to the th row of contact balls and the edge of the second row of contact balls.

Preferably, the end face sealing ring, the oil passage sealing ring, the th outer ring, the second outer ring, the third outer ring, the th inner ring, the second inner ring, the third inner ring and the limiting ring are all circular rings.

Preferably, circular through holes are formed in the th inner ring, the second inner ring and the third inner ring, and the th row of contact balls and the second row of contact balls are symmetrical around the center of the circular through holes.

Compared with the prior art, the beneficial effects of the utility model are as follows:

the utility model discloses a two outer tooth biserial eccentric thrust angular contact ball slewing bearing of combination formula, through row contact balls, the second row contact balls, the slewing bearing of external tooth and the outer tooth combination of second into two outer tooth biserial eccentric thrust angular contact ball forms, can use in the mechanical structure that needs two outer teeth to connect, compare two solitary external tooth bearings, this structure is inside to be connected two outer teeth each other through two contact balls, increase the biggest load of whole bearing, connect stably, the circumstances such as rotatory skew can not take place.

Drawings

FIG. 1 is an overall structure diagram of the present invention;

FIG. 2 is a schematic diagram of a second row of contact balls according to the present invention;

fig. 3 is a structural view of the contact ball of line according to the present invention.

In the drawing, the bearing comprises a 1 st th outer ring, a 2 nd second outer ring, a 3 rd end face sealing ring, a 4 th oil duct mounting ring, a 5 th third outer ring, a 6 th second outer tooth, a 7 th oil duct sealing ring, an 8 th th inner ring, a 9 th limiting ring, a 10 th second row of contact balls, a 11 th th row of contact balls, a 12 th isolating block, a 13 th third inner ring, a 14 th second inner ring, and a 15 th th outer tooth.

Detailed Description

The technical solution in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of , but not all embodiments.

Referring to fig. 1-3, a combined double-outer-tooth double-row eccentric thrust angular contact ball slewing bearing includes -row contact balls 11 and a second row contact balls 10, -row contact balls 11 and a second row contact balls 10 are both formed by two single contact balls, the -row contact balls 11 are provided with a -th outer ring 1 and a second outer ring 2 at the outer side thereof, a -th outer ring 1 is located at the lower end of the second outer ring 2, end face seal rings 3 are provided on the second -th outer ring 1 and the second outer ring 2, an oil passage mounting ring 4 is provided on the inner side of the -row contact balls 11, an oil passage is provided in the middle of the oil passage mounting ring 4, the oil passage is connected to the -row contact balls 11 and the edge of the second row contact balls 10, the -th outer-row contact balls 11 and the oil passage mounting ring 4 are provided with the second row contact balls 10 at the side thereof, oil passage seal rings 7 are provided at the two ends of the second row contact balls 10, the edge of the second row contact balls 10 is connected to an isolation block 12, the inner ring 10 is provided at the side of the second row contact balls 5969, a second outer-row contact ball inner ring 6-row contact ball inner ring, a third outer-contact ball-contact ring 358-contact ring, a third outer-contact ball-outer-contact ball-contact ring 9, a third outer-contact ball-contact ring 9, a third outer-.

In conclusion, the utility model discloses a combination formula two external tooth biserial eccentric thrust angular contact ball slewing bearing, through the slewing bearing of the form of two external tooth biserial eccentric thrust angular contact balls is made up to contact ball 11 of row, second row contact ball 10, external tooth 15 and second external tooth 6, can use in the mechanical structure that needs two external teeth to connect, compare two solitary external tooth bearings, two external teeth are connected each other through two rows of contact balls in this structure, increase the biggest load capacity of whole bearing, connect stably, can not take place the circumstances such as rotational deviation.

It is noted that, herein, relational terms such as , second, and the like are used solely to distinguish entities or operations from another entities or operations without necessarily requiring or implying any actual such relationship or order between such entities or operations, further, the terms "comprise," "include," or any other variation thereof are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a series of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

The combined double-outer-tooth double-row eccentric thrust angular contact ball slewing bearing comprises a -row contact ball (11) and a second row of contact balls (10), and is characterized in that a second 1 outer ring (1) and a second outer ring (2) are arranged on the outer side of the -row contact ball (11), the outer ring (1) is located at the lower end of the second outer ring (2), end face seal rings (3) are arranged on the outer ring (1) and the second outer ring (2), an oil duct mounting ring (4) is arranged on the inner side of the -row contact ball (11), a second row of contact ball (10) is arranged on the sides of the -row contact ball (11) and the oil duct mounting ring (4) , oil duct seal rings (7) are arranged at the two ends of the second row of contact ball (10), a spacer block (12) is connected to the edge of the second row of contact ball (10), a second row of contact ball (6) is arranged on the side of the second outer tooth (6), a third outer tooth outer-row of contact ball (10) is arranged on the upper end, a second outer tooth contact ball (10) is arranged on the side, a second row of the middle of the outer tooth contact ball (10) is arranged on the inner ring (13), a second outer tooth contact ball (13) is arranged on the side of the second outer tooth (10), a second row of the lower end of the second outer tooth (9) is arranged on the inner ring (9), a second row of the third outer tooth contact ball (9), a.
2. Combined double external teeth double row eccentric thrust angular contact ball slewing bearing according to claim 1, characterized in that, the st row of contact balls (11) and the second row of contact balls (10) are both composed of two single contact balls.
3. Combined double-outer-tooth double-row eccentric thrust angular contact ball slewing bearing according to claim 1, characterized in that the oil passage mounting ring (4) is provided with an oil passage in the middle, and the oil passage is connected with the edges of the th row of contact balls (11) and the second row of contact balls (10).
4. The combined double-outer-tooth double-row eccentric thrust angular contact ball slewing bearing according to claim 1, wherein the end face seal ring (3), the oil passage seal ring (7), the outer ring (1), the second outer ring (2), the third outer ring (5), the inner ring (8), the second inner ring (14), the third inner ring (13) and the limit ring (9) are all in the shape of a circular ring.
5. Combined double-outer-tooth double-row eccentric thrust angular contact ball slewing bearing according to claim 1, wherein the inner ring (8), the second inner ring (14) and the third inner ring (13) are provided with circular through holes at their middle parts, and the row of contact balls (11) and the second row of contact balls (10) are symmetrical about the center of the circular through holes.