CN217502261U

CN217502261U - Novel non-maintaining ball cross

Info

Publication number: CN217502261U
Application number: CN202221767414.3U
Authority: CN
Inventors: 李宝玉
Original assignee: Heilongjiang Meiyu Bearing Technology Co ltd
Current assignee: Heilongjiang Meiyu Bearing Technology Co ltd
Priority date: 2022-07-11
Filing date: 2022-07-11
Publication date: 2022-09-27
Anticipated expiration: 2032-07-11

Abstract

The utility model relates to a novel non-maintaining ball cross. At present, when a full needle bearing is adopted by a universal joint pin, oil leakage is often generated due to high-speed operation, and meanwhile, when the universal joint pin runs, torsion is sometimes uneven, so that a needle roller in the full needle bearing is clamped, so that acceptance in the bearing is uneven, and the bearing is easy to damage. A novel maintenance-free ball cross, its constitution includes: the universal joint comprises a cross shaft (1), wherein four shaft heads of the cross shaft are respectively connected with double rows of ball bearings (2), inner rings (2-1) of the double rows of ball bearings are fixedly connected with shaft heads (3), and outer rings (2-2) of the double rows of ball bearings are fixedly connected with a cross shaft universal joint; the inner sides of an inner ring and an outer ring of the double-row ball bearing are in a parallel structure, two ball sliding grooves are formed in the upper part and the lower part, and a group of balls (2-3) are arranged in the ball sliding grooves; the upper group of balls and the lower group of balls are respectively provided with a retainer (2-4). The utility model discloses be applied to the agricultural machine field.

Description

Novel non-maintaining ball cross

Technical Field

The utility model relates to a novel non-maintaining ball cross.

Background

The cross shaft is also called universal joint as a common part of a locomotive, is mainly used for realizing shaft power output in different directions, and is particularly commonly used for realizing power output in the field of agricultural machinery. The journal of the existing universal joint of the universal joint pin is uniformly distributed along the periphery of the central body in the radial direction is generally provided with full needle bearings, the full needle bearings belong to oil filling bearings, lubricating oil needs to be supplemented frequently, a part of the lubricating oil is stored in a hollow structure on the shaft diameter, and when the universal joint pin runs, the journal and a shaft hole on a joint fork rotate relatively, so that the journal and the shaft hole need to be lubricated. Therefore, the universal joint is often disabled due to the above problems, resulting in an increase in use cost.

Disclosure of Invention

An object of the embodiment of the utility model is to provide a novel non-maintaining ball cross, aim at solving following problem: the existing full-needle bearing of the universal joint pin universal joint which is radially arranged along the periphery of the central body needs to be supplemented with lubricating oil regularly, and oil leakage is easy to occur in the operation process, and the roller pin in the full-needle bearing is blocked to cause frequent damage.

The utility model aims at providing a novel non-maintaining ball cross is put.

The above purpose is realized by the following technical scheme:

a novel maintenance-free ball cross, its constitution includes: the universal joint comprises a cross shaft, wherein four shaft heads of the cross shaft are respectively connected with double rows of ball bearings, inner rings of the double rows of ball bearings are fixedly connected with the shaft heads, and outer rings of the double rows of ball bearings are fixedly connected with a cross shaft universal joint;

the inner sides of the inner ring and the outer ring of the double-row ball bearing are in a parallel structure, two ball chutes are arranged up and down, and a group of balls are arranged in the ball chutes;

the ball of upper strata a set of with lower floor a set of the ball on install the retainer respectively, the retainer pass through pin fixed connection, and be provided with lubricating oil between retainer and ball.

The novel maintenance-free ball cross axle, outer lane and the inner race of double ball bearing set up the shield draw-in groove, and the card is gone into in the shield draw-in groove and is had the shield.

The novel maintenance-free ball cross shaft is characterized in that the diameter of the shaft head is the same as that of an inner ring of each double-row ball bearing.

The utility model discloses the beneficial effect who reaches is:

1. the utility model replaces the shaft head of the cross shaft into a solid structure, and installs a double-row ball bearing on the replaced shaft head, the double-row ball bearing adopts a ball structure, the inner ring and the outer ring of the double-row ball bearing are parallel and are provided with two ball placing grooves with annular structures, a group of balls are arranged between the retainers, the retainers are arranged to guide and drive the rolling bodies to roll on the correct roller path, the retainers are equally spaced from the rolling bodies, and are evenly distributed on the circumference of the roller path to prevent the rolling bodies from mutually colliding and rubbing during working, so that a proper distance is kept between the rolling bodies, the direct contact of adjacent rolling bodies is prevented, so as to keep the friction and the heating at the lowest level, the outer ring of the double-row ball bearing is fixed on the universal joint of the cross shaft for use, and replaces the traditional needle roller structure of a full needle bearing and the structure of an oil storage cavity, no oiling operation is required.

2. The utility model discloses a double ball bearing cover is on the axle head, and double ball bearing uses the ball, and the friction is little between the ball, is difficult to appear blocking the shell condition, and the design has the retainer in the ball bearing moreover, need not carry out the oiling operation again, and the oil leak phenomenon does not appear behind the installation closing cap (shield). The double-row structure of the double-row ball bearing can enhance the strength of the ball bearing, and is beneficial to the high-strength working environment of agricultural machinery.

Drawings

The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description serve to explain the invention and not to limit the invention.

In the drawings:

FIG. 1 is a schematic structural diagram of the present invention;

FIG. 2 is a top view of FIG. 1;

fig. 3 is a cross-sectional view of the present invention;

FIG. 4 is a schematic view of the retainer in connection with the ball;

FIG. 5 is a schematic view of a full needle bearing;

in the figure: 1. the device comprises a cross shaft, 2 parts of double-row ball bearings, 3 parts of a shaft head, 4 parts of a dust cover, 5 parts of a full needle bearing, 6 parts of a sealing ring, 2-1 parts of an inner ring, 2-2 parts of an outer ring, 2-3 parts of balls, 2-4 parts of a retainer.

Detailed Description

The preferred embodiments of the present invention will be described in conjunction with the accompanying drawings, and it will be understood that they are presented herein only to illustrate and explain the present invention, and not to limit the present invention.

Example 1:

as shown in fig. 1-4, a novel maintenance-free ball cross comprises: the universal joint comprises a cross shaft 1, wherein four shaft heads of the cross shaft are respectively connected with double rows of ball bearings 2, inner rings 2-1 of the double rows of ball bearings are fixedly connected with shaft heads 3, and outer rings 2-2 of the double rows of ball bearings are fixedly connected with a cross shaft universal joint; the inner sides of the inner ring and the outer ring of the double-row ball bearing are in a parallel structure, two ball chutes are arranged up and down, and a group of balls 2-3 are arranged in the ball chutes; the ball retainer is characterized in that retainers 2-4 are respectively arranged on the upper group of balls and the lower group of balls, the retainers are fixedly connected through pins 2-5, and lubricating oil is arranged between the retainers and the balls.

Example 2:

as shown in fig. 1 and fig. 3, according to the novel maintenance-free ball cross axle described in embodiment 1, the outer race and the inner race of the double-row ball bearing are provided with dust cap slots, and the dust cap 4 is clamped into the dust cap slots.

Example 3:

as shown in FIGS. 1 and 3, the novel maintenance-free ball cross according to

embodiment

1 or 2 has a stub shaft with a diameter that is the same as the diameter of the inner race of each of the dual row ball bearings.

The utility model discloses a working method does: in order to avoid the problems that the full needle bearing structure shown in fig. 5 has large heat during operation, vibration is easy to occur during rotation, oil leakage phenomenon is easy to occur from a sealing ring, lubricating oil needs to be supplemented periodically, and roller pins in the full needle bearing are blocked to cause frequent damage, the utility model replaces the shaft head of the cross shaft into a solid structure, simultaneously, double-row ball bearings are arranged on the replaced shaft head and adopt ball structures, two ball placing grooves with annular structures are arranged on the inner sleeve ring and the outer sleeve ring of the double-row ball bearings in a parallel structure, one group of balls are arranged between the retainers, the retainer is used for guiding and driving the rolling bodies to roll on a correct roller path, and simultaneously, the retainers separate the rolling bodies equidistantly and are uniformly distributed on the circumference of the roller path to prevent the rolling bodies from mutually colliding and rubbing during operation, so that the rolling bodies keep proper distance between the rolling bodies, the direct contact of adjacent rolling elements is prevented, so that friction and heating are kept at the lowest level, the traditional structure of a needle roller structure and an oil storage cavity of a full needle bearing is replaced, and after a dustproof cover is installed, maintenance operations such as oil injection are not needed.

Claims

1. A novel maintenance-free ball cross, its constitution includes: the cross shaft is characterized in that: the four shaft heads of the cross shaft are respectively connected with double rows of ball bearings, inner rings of the double rows of ball bearings are fixedly connected with the shaft heads, and outer rings of the double rows of ball bearings are fixedly connected with the cross shaft universal joint;

2. The novel maintenance-free ball cross of claim 1, wherein: the outer ring and the inner ring of the double-row ball bearing are provided with dustproof cover clamping grooves, and the dustproof covers are clamped in the dustproof cover clamping grooves.

3. The novel maintenance-free ball cross of claim 1, wherein: the diameter of the shaft head is the same as that of the inner ring of each double-row ball bearing.