CN202092512U - Precision slewing bearing - Google Patents

Abstract

A precision slewing bearing is mainly used for a military vehicle gun rotation. An internal tooth for transmission is arranged in a step on one end of an outer ring, and the outer ring is provided with double rows of channels; an inner ring comprises an upper inner ring and a lower inner ring which can be separated, the upper inner ring and the lower inner ring are connected by a bolt and are provided with roller paths, an end face of the upper inner ring is provided with a ball opening for arranging a steel ball, and a sealing ring is arranged among the outer ring, the upper inner ring and the lower inner ring. The utility model has a small installation space, high precision, large bearing capacity, fastness and convenience in installation, high anti-corrosion ability and high rigidity.

Description

Precise pivoting supported

Technical field

The utility model relates to bearing manufacturing technology field, is a kind of the precise pivoting supported of military vehicle rifle body rotation that be used for specifically.

Background technology

Pivoting support is a kind ofly can bear combined loads such as bigger axial load, radial load and tilting moment simultaneously, integrates the large size bearing of the special construction of supporting, rotation, transmission, multiple function such as fixing.Generally speaking, pivoting support self all has installing hole, lubricating oil and sealing device, can satisfy the different demands of all kinds of main frames of work under the various different working conditions; On the other hand, pivoting support itself has characteristics such as compact conformation, guiding rotation convenience, simple installation and maintenance are easy, is widely used on the huge revolving devices such as handling machinery, digger, constructional engineering machinery, harbour machinery, wind-power electricity generation, Medical Devices, radar and missile launcher.

At present, domestic pivoting support roughly comprises several classes such as outer ring external tooth form pivoting support, inner ring internal tooth form pivoting support, no tooth-like pivoting support, has following defective:

1, its journal bearing size is bigger, is used for bigger installing space more;

2, the adjustability of bearing axial-radial play is poor, and the pivoting support precision is low;

3, bearing capacity is little: because of internal structure is composite cage and steel ball, retainer takies certain space, cuts down the bearing capacity of same size;

4, structure exist to be installed soft band, can not bearing load at soft zone, influence pivoting support service life;

5, less for the pivoting support in little space.

Summary of the invention

For overcoming the deficiencies in the prior art, it is a kind of precise pivoting supported that goal of the invention of the present utility model is to provide, and improves precision, the bearing capacity of bearing with realization, and reach the easy-to-install purpose.

For achieving the above object, the technical solution of the utility model is: be useful on the internal tooth of transmission in the end step of outer ring, there is the biserial raceway groove outer ring; Inner ring comprises that separable upward inner ring reaches inner ring down, connects with screw, and inner ring had raceway under last inner ring reached, and the end face of last inner ring has the ball mouth that is used to install steel ball, and outer ring and last inner ring reach down and between the inner ring sealing ring be housed.

The utility model compared with prior art has the following advantages:

1, installing space is little: the radial-axial size of this pivoting support is little, wall thickness, and change the structure of original outer ring external tooth and inner ring internal tooth, and use the new construction of outer ring internal tooth, saved installing space to a greater extent;

2, precision height: adopt separable interior coil structures, make the axial-radial play of bearing reach adjustability, make end-play can be negative play or zero windage, reduce the corner that bearing produces under tilting moment, improved the precision of pivoting support;

3, bearing capacity is big: adopt two row completely to adorn steel ball and bigger contact angle, improved the bearing capacity of pivoting support;

4, internal structure flexibly: the filling slot of an inner ring end face, avoid the soft zone of floating bearing, also improve the bearing capacity of bearing simultaneously, another inner ring can directly be inserted steel ball from end face;

5, anti-corrosion ability: adopt oxidation processes, improved the anti-corrosion ability of bearing;

6, good rigidly: adopt the heat treatment mode of integral quenching, improved the rigidity and the bearing capacity of bearing.

Description of drawings

Fig. 1 is a front view of the present utility model.

The specific embodiment

As shown in Figure 1, steel ball 2 is housed between outer ring 5 and the inner ring, steel ball 2 is accurate steel balls, there is the raceway groove of biserial outer ring 5, outer ring 5 external diameter left ends have step and the through hole 15 and the dowel hole 14 of installation are arranged, and right-hand member has the screw 10 of installation, and the internal diameter left end has step and internal tooth 13 is arranged, the internal diameter right-hand member has two row raceways, and a step is arranged in the middle of the raceway; Inner ring is two separable half inner rings, comprise that inner ring 3 reaches inner ring 4 down, with steel ball 2, the 5 one-tenth 60 ° of contact angles in outer ring, can bear bigger axial force, simultaneously can be by the end face of grinding half inner ring, regulate the end-play of inner ring and outer ring, make end-play reach designing requirement, the end face of last inner ring 3 has a counterbore 11, be used to install drive pinion, the screwed hole 9 that last inner ring 3 one end faces have installation is connected with following inner ring 4, at the external diameter right-hand member raceway and step is arranged, screwed hole 12 is used to install the parts of rotating part, following inner ring 4 one end faces have the counterbore 7 and the through hole 8 of installation, at the external diameter left end raceway and step are arranged, and last inner ring 3 reaches down and connects with screw 6 between the inner ring 4, last inner ring 3 end faces have peace ball-loading hole 16, are used to install inboard steel ball 2; Outer ring 5 and last inner ring 3 reach down and between the inner ring 4 annular seal circle 1 are housed, and both ends of the surface have step surface, gluing when being used to install, and its internal diameter and inner ring contact position are thinner, and the utility model is radial seal, and contact-making surface is little, makes that rotation is more flexible.

Claims (3)

1. One kind precise pivoting supported, it is characterized in that: be useful on the internal tooth of transmission in the end step of outer ring (5), outer ring (5) have the biserial raceway groove; Inner ring comprises that the separable inner ring (3) of going up reaches inner ring (4) down, and inner ring (4) had raceway under last inner ring (3) reached, and the end face of last inner ring (3) has the ball mouth that is used to install steel ball (2).
2. 2. according to claim 1 precise pivoting supported, it is characterized in that: inner ring (4) connected with screw under upward inner ring (3) reached.
3. 3. according to claim 1 precise pivoting supported, it is characterized in that: outer ring (5) and last inner ring (3) reach down and between the inner ring (4) sealing ring (1) are housed.

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