CN203926391U - A kind of wire roller crossed-circle taper roller bearing - Google Patents

Abstract

The utility model belongs to the technical field of rolling bearings and relates to a steel wire raceway cross tapered roller bearing, which consists of a tapered roller (1), a cage (2), a steel wire raceway (3), an inner ring frame (4) and an outer ring frame (5) composition; the steel wire raceway (3) is annular but not closed, and contains a raceway slope, the steel wire raceways (3-1) and (3-2) are installed in the groove of the inner ring frame (4), and the steel wire The raceways (3-3) and (3-4) are installed in the grooves of the outer ring frame (5); there are two sets of vertically crossed conical holes (2-1) with the same size on the cage (2). The rotation center line of the hole (2-1) and the rotation center line of the cage are 45°, and the tapered rollers (1) are respectively placed in the two groups of tapered holes (2-1); the tapered rollers (1) are respectively Contact and roll between the raceway slopes of the two steel wire raceways (3) on the diagonals perpendicular to the centerline of their revolution. The steel wire raceway cross tapered roller bearing proposed by the utility model overcomes the load-bearing limitation of the traditional steel wire raceway bearing, can bear large axial force and large radial force at the same time, and has simple structure and flexible force bearing form , Saving processing hours and processing costs and other characteristics.

Description

A steel wire raceway cross tapered roller bearing

technical field

The utility model relates to the technical field of rolling bearings, in particular to a steel wire raceway crossed tapered roller bearing.

Background technique

At present, due to its large radial dimension, small axial dimension, high rotational accuracy, small moment of inertia, and easy maintenance and replacement, steel wire raceway bearings are widely used in the rotary devices of machines in industries such as solar energy, robotics, and textiles.

Traditional steel wire raceway bearings use balls as rolling bodies, and the balls roll on four steel wires embedded in the annular grooves of the inner and outer ring frames. The contact surface is an arc-shaped raceway surface. The axial force and radial The force is small.

There is a type of steel wire raceway bearing with rollers as rolling elements. The centerline of rotation of the rollers is parallel to the centerline of rotation of the bearing. The rollers roll on four steel wires embedded in the annular grooves of the inner and outer ring frames, and the contact surface is flat. Raceway surface, this type of bearing can bear large radial force, but cannot bear axial force.

There is also a type of steel wire raceway bearing that uses balls and rollers as rolling bodies at the same time. The balls roll on four circular steel wires embedded in the annular grooves of the inner and outer ring frames. The centerline of rotation of the rollers is parallel to the centerline of rotation of the bearing. , by controlling the radial clearance, the ball bears the axial force and the roller bears the radial force. Compared with the above two bearings, the radial load capacity of this type of bearing is greatly improved, and the axial load capacity is also improved, but For occasions that need to bear a large axial force, it still cannot meet the demand, and the total number of steel wires that need to be processed and ground for this type of bearing reaches eight, which consumes more man-hours and higher processing costs.

Contents of the invention

The purpose of this utility model is to overcome the deficiencies in the related technologies of existing steel wire raceway bearings, and provide a new type of steel wire raceway crossed tapered roller bearing structure. This kind of steel wire raceway crossed tapered roller bearing has a simple structure and One-time drawing and forming saves processing cost and man-hours, reduces the friction loss of the bearing, and increases the load capacity of the bearing. The bearing can withstand axial forces in two directions, which expands the application occasions of the bearing.

The purpose of this utility model is achieved through the following technical solutions.

The steel wire raceway cross tapered roller bearing described in the utility model is composed of a tapered roller (1), a cage (2), a steel wire raceway (3), an inner ring frame (4) and an outer ring frame (5) , characterized in that: the steel wire raceway (3) is annular but not closed, and contains a raceway slope, and the steel wire raceways (3-1) and (3-2) are installed in the groove of the inner ring frame (4) , the steel wire raceways (3-3) and (3-4) are installed in the grooves of the outer ring frame (5); the cage (2) has conical holes (2-1) arranged vertically and crosswise with the same size , the rotation center line of the tapered hole (2-1) and the rotation center line of the cage (2) are 45°, and the tapered rollers (1) are respectively placed in the tapered holes (2-1); the cone The rollers (1) contact and roll between the raceway slopes of the two steel wire raceways (3) on the opposite corners perpendicular to the center line of their rotation, and the way of contact and rolling is: the center line of rotation and the wire raceway (3) -2) and (3-4) The conical surface of a group of tapered rollers (1-1) that coincides with the diagonal line is in contact with the raceway slopes of the steel wire raceways (3-1) and (3-3) at the same time, The tapered roller (1-1) rolls between the steel wire raceways (3-1) and (3-3); the center line of rotation coincides with the diagonal connection of the steel wire raceways (3-1) and (3-3) The tapered surface of a group of tapered rollers (1-2) is in contact with the raceway slopes of the steel wire raceways (3-2) and (3-4) at the same time, and the tapered rollers (1-2) are in contact with the steel wire raceway (3-4) -2) and (3-4) to scroll.

The centerline of rotation of the tapered roller (1) is 45° to the centerline of rotation of the bearing, the small ends of the tapered rollers (1) face the bearing inner ring frame (4), and the big ends face the bearing outer ring frame (5 ), the length of the tapered roller (1) is smaller than the distance between the raceway slopes of the two steel wire raceways (3) on the opposite corner coincident with its center of rotation, the tapered roller (1) can bear axial force and radial force.

The rotary section of the cage (2) is square, and the centerline of the cage (2) is parallel to a diagonal of the square rotary section, and there is a groove ( 2-2), the depth of the groove (2-2) is at least as far as the conical surface of the tapered hole (2-1), and the tapered roller (1) is in the groove (2-2) of the cage (2) The exposed conical surface is in contact with the raceway slope of the steel wire raceway (3).

The inclination of the raceway slope of the steel wire raceway (3) is the same as the taper of the tapered roller (1), and the diagonal connection line between the steel wire raceway (3-1) and (3-3) is the same as the steel wire raceway (3-2) and (3-4) are orthogonal to the diagonals.

The installation method of the tapered roller (1) on the cage (2) is: the large end of the tapered roller (1) corresponds to the large end of the tapered hole (2-1), and the small end of the tapered roller (1) The end corresponds to the small end of the tapered hole (2-1).

The outer ring frame (5) is divided into upper and lower parts by a plane parallel to the end face of the bearing, which are connected by bolt a (8). Adjusting gaskets (6) can be embedded between the upper and lower parts, and the adjusting gaskets ( 6) Achieve bearing preload effect.

The utility model adopts the above technical scheme and has the following beneficial effects.

1. The structure is simple, and the processing hours and costs are reduced. The steel wire raceway cross tapered roller bearing improves the current situation of the eight steel wire raceways of the roller and ball composite bearing, and follows the structure of the original four steel wire raceways of the steel wire raceway bearing. The steel wire raceways are drawn and formed at one time. The manufacturing method of the steel wire raceway reduces processing man-hours and saves processing costs.

2. The form of force is flexible and the scope of application is expanded. The two sets of tapered rollers of the steel wire raceway crossed tapered roller bearing are arranged vertically and crosswise. The center line of rotation of the tapered rollers and the center of rotation of the bearing form an included angle of 45°. The bearing can withstand axial forces in two directions, and Whether the axial force is applied to the bearing inner ring frame or the bearing outer ring frame, no matter the radial force is applied to the upper half of the outer ring frame or the lower half of the outer ring frame, the bearing can meet the stress conditions, so the application The range is greatly increased.

3. The bearing friction loss is reduced and the load capacity is increased. The steel wire raceway crossed tapered roller bearing uses tapered rollers as rolling elements. While the tapered rollers revolve with the bearing, they rotate between the steel wire raceways, and the rolling is more than sliding, so the friction loss of the bearing is relatively small. The two sets of tapered rollers of the steel wire raceway crossed tapered roller bearing are arranged crosswise, which can bear large axial force and large radial force at the same time, and the load capacity is greatly improved compared with traditional bearings.

Description of drawings

Figure 1 is a structural sectional view of the steel wire raceway crossed tapered roller bearing of the present invention, the section passes through the centerline of rotation of the bearing, and passes through the centerline of rotation of the bolts on the outer ring frame.

Fig. 2 is another structural cross-sectional view of the steel wire raceway cross-tapered roller bearing of the present invention, the cross-section passes through the center line of rotation of the bearing and passes through the bisector of the outer ring frame in the circumferential direction.

Fig. 3 is a cross-sectional view of the cage of the present invention.

Fig. 4 is an axonometric view of the cage of the present invention.

Fig. 5 is a schematic structural view of the tapered roller of the present invention.

Fig. 6 is a structural schematic diagram of the steel wire raceway of the present invention.

As shown in the figure: 1—tapered roller, 2—cage, 3—steel wire raceway, 4—inner ring frame, 5—outer ring frame, 6—adjusting gasket, 7—sealing ring, 8—bolt a, 9—pin, 10—bolt b.

Detailed ways

The structure and working principle of the steel wire raceway crossed tapered roller bearing of the present invention will be further described below through examples and in conjunction with the accompanying drawings.

Embodiment one.

In this embodiment, the structure of the steel wire raceway cross tapered roller bearing is shown in Figure 1, including two sets of tapered rollers, respectively (1-1) and (1-2), a cage (2), Four steel wire raceways are respectively (3-1), (3-2), (3-3) and (3-4), an inner ring frame (4) and an outer ring frame (5).

The two sets of tapered rollers (1-1) and (1-2) are of the same size and arranged vertically and crosswise inside the bearing, both of which can bear axial force and radial force at the same time. The centerline of rotation of the tapered rollers (1) is 45° to the centerline of rotation of the bearing, the large ends of the tapered rollers (1) all face the bearing outer ring frame (5), and the small ends all face the bearing inner ring frame (4).

The rotary section of the cage (2) is square, and the center line of the cage (2) is parallel to a diagonal line of the square rotary section. The same tapered hole (2-1), the small end of the tapered hole (2-1) faces the inner ring frame (4) of the bearing, and the big end faces the outer ring frame (5) of the bearing, the tapered hole (2-1) ) and the center line of rotation of the cage (2) form 45°. There is an annular groove (2-2) on the four faces of the cage (2), the depth of the groove (2-2) is at least as far as the conical surface of the tapered hole (2-1), and the tapered roller ( 1) The conical surface exposed in the groove (2-2) of the cage (2) is in contact with the raceway slope of the steel wire raceway (3).

The steel wire raceway (3) is annular, but not closed, the steel wire raceway (3-1) and (3-2) have the same size, the steel wire raceway (3-3) and (3-4) have the same size, four steel wires The raceway (3) has a raceway bevel, and the inclination of the raceway bevel is the same as that of the tapered roller (1). The steel wire raceways (3-1) and (3-2) are installed on the inner ring frame (4) In the groove, the steel wire raceways (3-3) and (3-4) are installed in the groove of the outer ring frame (5), and the diagonal connecting line between the steel wire raceways (3-1) and (3-3) and The diagonal lines of the steel wire raceways (3-2) and (3-4) are orthogonal.

The conical surface of a group of tapered rollers (1-1) whose center line of rotation coincides with the diagonal line of the wire raceways (3-2) and (3-4) is simultaneously aligned with the wire raceways (3-1) and (3-4) -3) The tapered roller (1-1) rolls between the steel wire raceway (3-1) and (3-3), the length of the tapered roller (1-1) is longer than the steel wire raceway The distance between the two raceway slopes of (3-2) and (3-4) is small, and the end face of the tapered roller (1-1) is not in contact with the wire raceway (3-2) and (3-4) Raceway ramp contact.

The conical surface of a group of tapered rollers (1-2) whose center line of rotation coincides with the diagonal line of the wire raceway (3-1) and (3-3) is simultaneously aligned with the wire raceway (3-2) and (3-3) -4) The tapered rollers (1-2) roll between the steel wire raceways (3-2) and (3-4), the length of the tapered rollers (1-2) is longer than the steel wire raceway The distance between the two raceway slopes of (3-1) and (3-3) is small, and the end face of the tapered roller (1-2) is not in contact with the wire raceway (3-1) and (3-3) Raceway ramp contact.

The large end of the tapered roller (1) corresponds to the large end of the tapered hole (2-1), and the small end of the tapered roller (1) corresponds to the small end of the tapered hole (2-1).

The outer ring frame (5) is divided into upper and lower parts by a plane parallel to the end face of the bearing, which are connected by bolt a (8). Adjusting gaskets (6) can be embedded between the upper and lower parts, and the adjusting gaskets (6) can be adjusted by grinding ) to achieve the bearing preload effect.

Embodiment two.

As shown in Figure 2, in this embodiment, the outer ring frame (5) is formed by two semicircular rings bisected by a bisector plane in the circumferential direction, positioned by pins (9) and connected by bolts b (10). Appropriate gaskets can be embedded in the seams of the two semicircular rings to achieve the flexibility of adjusting the bearings, and the rest are the same as in Embodiment 1.

Embodiment three.

As shown in Figure 1, in this embodiment, the sealing ring (7) is installed at the corresponding positions of the outer ring frame (5) and the inner ring frame (4), and the inside of the bearing plays a role of dust prevention, and the rest are the same as in the first embodiment.

Claims (6)

1. a wire roller crossed-circle taper roller bearing, formed by tapered roller (1), retainer (2), wire roller (3), inner ring frame frame (4) and outer shroud framework (5), it is characterized in that: described wire roller (3) ringwise but do not seal, and contain raceway inclined-plane, wire roller (3-1) and (3-2) being arranged in the groove of inner ring frame frame (4), wire roller (3-3) and (3-4) being arranged in the groove of outer shroud framework (5); On described retainer (2), there is square crossing to arrange and measure-alike conical bore (2-1), the gyration center line of the gyration center line of conical bore (2-1) and retainer (2) is 45 °, and tapered roller (1) is placed in respectively in described conical bore (2-1); Described tapered roller (1) the respectively raceway inclined-plane Contact of two wire rollers (3) on the diagonal angle perpendicular to its gyration center line rolls, and the mode of touch scrolling is: gyration center line contacts with the raceway inclined-plane of wire roller (3-1) and (3-3) with the conical surface of one group of tapered roller (1-1) that wire roller (3-2) overlaps with (3-4) diagonal angle line simultaneously, and tapered roller (1-1) rolls at wire roller (3-1) with (3-3); Gyration center line contacts with the raceway inclined-plane of wire roller (3-2) and (3-4) with the conical surface of one group of tapered roller (1-2) that wire roller (3-1) overlaps with (3-3) diagonal angle line simultaneously, and tapered roller (1-2) rolls at wire roller (3-2) with (3-4).

2. wire roller crossed-circle taper roller bearing according to claim 1, it is characterized in that: the gyration center line of described tapered roller (1) and bearing gyration center line are 45 °, the small end of tapered roller (1) is all towards bearing inner ring framework (4), hold all towards outer race framework (5) greatly, distance between the raceway inclined-plane of two wire rollers (3) on the diagonal angle that the Length Ratio of tapered roller (1) and its gyration center overlap is little, and tapered roller (1) can bear axial force and radial force simultaneously.

3. wire roller crossed-circle taper roller bearing according to claim 1, it is characterized in that: the revolution section of described retainer (2) is square, and the gyration center line of retainer (2) is parallel with a diagonal of square revolution section, the small end of conical bore (2-1) is all towards bearing inner ring framework (4), the large end of conical bore (1-2) is all towards the outer shroud framework (5) of bearing, on four faces of retainer (2), all there is a groove (2-2), the degree of depth of groove (2-2) is at least opened to till the conical surface of conical bore (2-1), the conical surface that tapered roller (1) exposes in the groove (2-2) of retainer (2) contacts cooperation with the raceway inclined-plane of wire roller (3).

4. wire roller crossed-circle taper roller bearing according to claim 1, it is characterized in that: the inclination on the raceway inclined-plane of described wire roller (3) is identical with the tapering of tapered roller (1), wire roller (3-1) is orthogonal with diagonal angle line (3-4) with diagonal angle line and wire roller (3-2) (3-3).

5. wire roller crossed-circle taper roller bearing according to claim 1, it is characterized in that: the mounting type of described tapered roller (1) on retainer (2) is: the large end of the large end corresponding circle taper hole (2-1) of tapered roller (1) is installed, and the small end of the small end corresponding circle taper hole (2-1) of tapered roller (1) is installed.

6. wire roller crossed-circle taper roller bearing according to claim 1, it is characterized in that: described outer shroud framework (5) is divided into upper and lower two-part by the plane that is parallel to bearing face, by bolt a(8) connect to form, between upper and lower two-part, embed and adjust pad (6).