CN212564096U - Axial limiting mechanism of rotating part - Google Patents

Abstract

The utility model discloses a rotary part's axial stop gear, it is spacing especially to be applicable to high-speed rotary part's axial. A spring mounting hole is formed at the bottom of the first center hole of the end cover; a retainer ring for holes, a baffle plate and a self-aligning thrust bearing are sequentially arranged in the first central hole from outside to inside; one end of the baffle is provided with a cylindrical bulge, and the cylindrical bulge is arranged in the inner ring of the aligning thrust bearing; a spring is arranged in the spring mounting hole and abuts against one side of the self-aligning thrust bearing outer ring; the circumference of the end cover boss is provided with a second lubricating oil inlet and a first lubricating oil inlet. The utility model can be integrally disassembled and assembled, the assembly efficiency is increased, and the maintenance is convenient; the rolling friction pair structure is adopted, so that the abrasion is small, the generated heat is less, and the maintenance-free life can be realized; the spring is used for pressing, so that the adjustment is convenient, the floating self-adaptability is realized, and the impact is reduced; the oil guide hole is reasonable in arrangement, the friction coefficient is reduced, and the service life is prolonged.

Description

Axial limiting mechanism of rotating part

Technical Field

The utility model relates to an engineering machine tool field specifically is a rotary part's axial stop gear, and it is spacing especially to be applicable to high-speed rotary part's axial.

Background

Many of the key components of the construction machine need to rotate at high speed during operation, these rotating components are generally floating structures, and axial limit measures need to be taken during operation, and examples of practical use include: limiting a wheel-side half shaft of a drive axle, limiting a wheel-side reducer half shaft of a mining dump truck and the like. At present, generally adopt wear-resisting gasket to carry out axial spacing in the domestic market, certain axial clearance can generally be left to this kind of scheme, consequently at the vehicle in-process of turning, and the semi-axis can lead to the fact the impact to wear-resisting gasket, has influenced the life of rotatory spare part. In addition, for many parts rotating at high speed, such sliding friction pairs generate a great deal of heat and wear, which in turn causes the sintering of the rotating parts, and metal debris generated by the wear also pollutes the lubricating oil.

For example, as shown in fig. 3, a mine car speed reducer assembly is shown, in which a limit pin is installed in a center hole of a half shaft, the limit pin and the half shaft rotate together by interference fit, a limit pin is also installed on an outer end cover and rotates together with a hub, a small gap is reserved between the two limit pins by an adjusting gasket, the half shaft can axially move within the gap range, when the two limit pins contact, the limit function of the half shaft is realized, and the end faces of the two limit pins form a sliding friction pair.

The conventional limiting mechanism has the following disadvantages:

1. the limiting mechanism adopts a sliding friction pair structure, is quick in abrasion and easy to sinter, and is not suitable for being used in a high-speed rotating limiting place;

2. the limiting mechanism is generally provided with a gap, and when the vehicle turns, the half shaft has certain centrifugal force, so that the half shaft can impact the limiting position to generate vibration noise;

3. the abrasive dust generated by sliding friction pollutes lubricating oil and generates a large amount of heat;

4. the limiting mechanism cannot be integrally disassembled and assembled, and is inconvenient to install and adjust.

Disclosure of Invention

In order to solve the technical problem, the utility model provides a rotary part's axial stop gear.

The utility model discloses a following technical scheme realizes: an axial limiting mechanism of a rotating component comprises an end cover, wherein a circumferential boss is arranged on the inner side of the end cover, and a hollow first central hole is formed in the center of the boss; spring mounting holes are uniformly distributed along the center of the boss at the bottom of the first central hole; a retainer ring for holes, a baffle plate and a self-aligning thrust bearing are sequentially arranged in the first central hole from outside to inside; the outer side of the baffle abuts against the axial direction of the rotating part, one end of the baffle, which is close to the aligning thrust bearing, is provided with a cylindrical bulge, and the cylindrical bulge is arranged in an inner ring of the aligning thrust bearing; a spring is arranged in the spring mounting hole and abuts against one side of the self-aligning thrust bearing outer ring; and a second lubricating oil inlet and a first lubricating oil inlet which are respectively communicated with the inner side and the outer side of the thrust self-aligning bearing I are formed in the circumference of the end cover boss.

It further comprises the following steps: bolt mounting holes are formed in the periphery of the end cover, and bolts are mounted in the bolt mounting holes; and the bolt is provided with an adjusting gasket and a washer.

And a second rectangular groove is formed in the circumferential surface of the end cover, and an O-shaped ring is installed in the second rectangular groove.

And a first rectangular groove is formed in the position, close to the outer end, of the inner wall of the first central hole, and the hole retainer ring is installed in the first rectangular groove.

Compared with the prior art, the utility model has the advantages that;

1. the rolling friction pair structure is adopted, so that the abrasion is small, the generated heat is less, and the maintenance-free life can be realized;

2. the rotating part, the limiting plate and the thrust self-aligning bearing are pressed by the spring, so that the adjustment is convenient, the floating self-adaptability is realized, and the impact is reduced;

3. the whole assembly and disassembly can be realized, the assembly efficiency is improved, and the maintenance is convenient;

4. the oil guide hole is reasonable in arrangement, friction coefficient is reduced, the problem that metal particles fall off to cause lubricating oil pollution due to large friction is avoided, and service life is prolonged.

Drawings

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

FIG. 2 is a graph of hole location distribution on an end cap;

fig. 3 is a structural view of a conventional hub reduction unit;

in the figure: 1. the adjustable thrust bearing comprises a baffle plate, 2, a hole retainer ring, 3, an end cover, 4, an O-shaped ring, 5, an adjusting gasket, 6, a gasket, 7, a bolt, 8, a spring, 9 and an aligning thrust bearing. 3-1 parts of first central hole, 3-2 parts of first rectangular groove, 3-3 parts of first lubricating oil inlet, 3-4 parts of second lubricating oil inlet, 3-5 parts of second rectangular groove, 3-6 parts of bolt mounting hole, 3-7 parts of spring mounting hole.

Detailed Description

The following is a specific embodiment of the present invention, which will be further described with reference to the accompanying drawings.

Referring to fig. 1 and 2, an axial limiting mechanism of a rotating component is used in a hub reduction gear as an example;

the inner side of the end cover 3 is provided with a circumferential boss, and a hollow first central hole 3-1 is formed in the center of the boss. Spring mounting holes 3-7 are uniformly distributed along the center of the boss at the bottom of the first central hole 3-1, and a first rectangular groove 3-2 is formed in the position, close to the outer end, of the inner wall of the first central hole 3-1. A retainer ring 2 for holes, a baffle plate 1 and a self-aligning thrust bearing 9 are sequentially arranged in the first center hole 3-1 from outside to inside. A hole retainer 2 is installed in the first rectangular groove 3-2 for restricting the outward sliding of the baffle 1. The outer side of the baffle 1 abuts against the axial end of the rotating part (half shaft), one end, close to the aligning thrust bearing 9, of the baffle 1 is provided with a cylindrical protrusion, and the cylindrical protrusion is installed in the inner ring of the aligning thrust bearing 9. And a spring 8 is arranged in the spring mounting hole 3-7, and the spring 8 is propped against one side of the outer ring of the aligning thrust bearing 9. The circumference of a boss of the end cover 3 is provided with a second lubricating oil inlet 3-4 and a first lubricating oil inlet 3-3 which are respectively communicated with the inner side and the outer side of the thrust self-aligning bearing I18-7, and the lubricating oil inlets are arranged in a staggered mode and used for leading in lubricating oil to lubricate the thrust self-aligning bearing, so that the service life of the thrust self-aligning bearing is prolonged.

Bolt mounting holes 3-6 are formed in the periphery of the end cover 3, bolts 7 are mounted in the bolt mounting holes 3-6, and adjusting gaskets 5 and washers 6 are mounted on the bolts 7. The end cover 3 is arranged in an end cover assembling central hole in the wheel hub speed reducer through a bolt 7, an adjusting gasket 5 and a gasket 6, and the gap at the assembling contact part of the end cover and the end cover can be adjusted through the adjusting gasket. A second rectangular groove 3-5 is formed in the matching position of the circumferential surface of the end cover 3 and the end cover assembling center hole, and an O-shaped ring 4 is installed in the second rectangular groove 3-5; for ensuring the sealing between the end cover 3 and the end cover assembling central hole in the hub reduction gear.

Claims (4)

1. The utility model provides an axial stop gear of rotary part which characterized in that: the end cover comprises an end cover (3), wherein a circumferential boss is arranged on the inner side of the end cover (3), and a hollow first central hole (3-1) is formed in the center of the boss; spring mounting holes (3-7) which are uniformly distributed along the center of the boss are formed in the bottom of the first central hole (3-1); a retainer ring (2) for holes, a baffle plate (1) and a self-aligning thrust bearing (9) are sequentially arranged in the first central hole (3-1) from outside to inside; the outer side of the baffle (1) abuts against the axial direction of the rotating part, one end, close to the aligning thrust bearing (9), of the baffle (1) is provided with a cylindrical bulge, and the cylindrical bulge is installed in the inner ring of the aligning thrust bearing (9); a spring (8) is arranged in the spring mounting hole (3-7), and the spring (8) abuts against one side of an outer ring of the aligning thrust bearing (9); and the circumference of a boss of the end cover (3) is provided with a second lubricating oil inlet (3-4) and a first lubricating oil inlet (3-3) which are respectively communicated with the inner side and the outer side of the thrust self-aligning bearing I (18-7).

2. A rotary member axial stop mechanism as defined in claim 1, wherein: the periphery of the end cover (3) is provided with bolt mounting holes (3-6), and bolts (7) are mounted in the bolt mounting holes (3-6); and the bolt (7) is provided with an adjusting gasket (5) and a gasket (6).

3. A rotary member axial stop mechanism as defined in claim 1, wherein: the circumferential surface of the end cover (3) is provided with a second rectangular groove (3-5), and an O-shaped ring (4) is arranged in the second rectangular groove (3-5).

4. A rotary member axial stop mechanism as defined in claim 1, wherein: a first rectangular groove (3-2) is formed in the position, close to the outer end, of the inner wall of the first central hole (3-1), and the retainer ring (2) for holes is installed in the first rectangular groove (3-2).

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