Special-shaped lightweight structure four-point contact ball turntable bearing

Abstract

The utility model provides a four-point contact ball turntable bearing with a special-shaped lightweight structure. The four-point contact ball turntable bearing comprises an inner ring, an outer ring, a ball blocking block and a taper pin, steel balls are installed between the outer circumferential face of the inner ring and the inner circumferential face of the outer ring, a ball filling hole used for installing the steel balls is formed in the outer ring in the radial direction, a conical hole is formed in the outer ring in the axial direction, the center line of the conical hole is perpendicularly crossed with the center line of the ball filling hole, and a ball blocking block used for blocking the steel balls is arranged in the ball filling hole. A conical pin for fixing the ball blocking block is arranged in the conical hole; a plurality of groups of lightening grooves and lightening holes are formed in the outer ring and the inner ring, and the trapezoidal lightening grooves are formed in key positions, so that the overall weight of the bearing is remarkably reduced, the strength and stability of the structure are ensured, and the requirements of limited mounting space and limited weight are met.

Description

TECHNICAL FIELD

[0001] The utility model belongs to bearing technical field, especially a special-shaped light structure four point contact ball turntable bearing. BACKGROUND

[0002] Four point contact ball turntable bearing is applied to a certain equipment, has the functions of steering and positioning, and has limited installation space, weight limitation and high reliability requirement. Therefore, it is urgent to design a turntable bearing with high bearing capacity, flexible rotation, small friction torque and light weight. CONTENT OF THE UTILITY MODEL

[0003] In view of the above problems, the purpose of the present application is to provide a special-shaped light structure four point contact ball turntable bearing, which is provided with a plurality of lightening grooves and lightening holes on the outer ring and the inner ring, and trapezoidal lightening grooves are used at key positions, thereby significantly reducing the overall weight of the bearing while ensuring the strength and stability of the structure, meeting the requirements of limited installation space and weight limitation.

[0004] To achieve part or all of the above purposes or other purposes, the present application provides the following technical solution: a special-shaped light structure four point contact ball turntable bearing, comprising an inner ring, an outer ring, a ball plug and a conical pin; the outer periphery of the inner ring and the inner periphery of the outer ring are provided with steel balls, the outer ring is provided with ball filling holes along the radial direction for installing the steel balls, the outer ring is provided with conical holes along the axial direction, the center line of the conical hole and the center line of the ball filling hole are perpendicular to each other, the ball plug is arranged in the ball filling hole for plugging the steel ball, and the conical pin is arranged in the conical hole for fixing the ball plug.

[0005] Further, the steel balls are provided in plurality, and the bearing further comprises a spacer block, the number of the spacer blocks is the same as that of the steel balls, and one spacer block is arranged between two adjacent steel balls.

[0006] Further, the inner ring is provided with an inner ring peach-shaped raceway, and the outer ring is provided with an outer ring peach-shaped raceway; the steel balls are arranged between the inner ring peach-shaped raceway and the outer ring peach-shaped raceway.

[0007] Further, the inner ring is provided with a flange extending outward along the outer circumference at one end, and the flange comprises a first radial flange, a second radial flange and a third radial flange in sequence from the inner diameter to the outer diameter.

[0008] Further, a plurality of first mounting holes are uniformly arranged on the first radial flange, the first mounting hole is a threaded hole, one end of the first radial flange close to the outer ring is provided with a first lightening groove, one end of the first radial flange away from the outer ring is provided with a second lightening groove and an eighth lightening groove, the first lightening groove and the second lightening groove are arranged between adjacent two first mounting holes respectively, and a plurality of first lightening holes penetrating through the bottom of the first lightening groove and the bottom of the second lightening groove are uniformly arranged.

[0009] Further, the eighth lightening groove is a trapezoidal lightening groove.

[0010] Further, a plurality of second mounting holes, sixth lightening holes and third lightening grooves are arranged on the second radial flange, a second mounting hole or a sixth lightening hole is arranged between adjacent two third lightening grooves, the second mounting hole comprises two groups of mounting holes, the two groups of mounting holes are symmetrically and perpendicularly arranged, one group of mounting holes comprises two second mounting holes, a third lightening groove is arranged between the two second mounting holes, the other group of mounting holes comprises two second mounting holes, and three third lightening grooves are arranged between the two second mounting holes, a plurality of second lightening holes are uniformly arranged on the bottom of the third lightening groove, and the second mounting hole is a threaded hole.

[0011] Further, a plurality of third mounting holes are uniformly arranged on the third radial flange, the third mounting hole is a light hole, one end of the third radial flange close to the outer ring is provided with a fourth lightening groove, the fourth lightening groove is arranged between adjacent two third mounting holes, and a plurality of third lightening holes are uniformly arranged on the bottom of the fourth lightening groove.

[0012] Further, a plurality of fourth mounting holes are uniformly arranged on the outer ring, one end of the outer ring away from the outer ring flange is provided with a fifth lightening groove, a sixth lightening groove and a seventh lightening groove, the fifth lightening groove, the sixth lightening groove and the seventh lightening groove are sequentially arranged between adjacent two fourth mounting holes, a plurality of fourth lightening holes are uniformly arranged on the bottom of the fifth lightening groove, a fifth lightening hole is arranged on the bottom of the sixth lightening groove, and a plurality of fourth lightening holes are uniformly arranged on the bottom of the seventh lightening groove, and a radial threaded hole is arranged on the outer circumferential surface between the fifth lightening groove and the seventh lightening groove.

[0013] Further, the diameter of one end of the conical hole away from the flange is greater than the diameter of one end of the conical hole close to the flange.

[0014] Compared with the prior art, the beneficial effects of the utility model are that: through the innovative light weight structure and the optimized installation design, the utility model realizes high bearing, low weight, flexible rotation and stable operation of the bearing, is suitable for the equipment with limited space and high reliability requirement, and has remarkable practical value and economy. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 Sectional view for setting ball block and conical pin position;

[0016] Figure 2 Structure schematic view of the utility model;

[0017] Figure 3 Top view of inner ring;

[0018] Figure 4 Partial enlarged top view of inner ring;

[0019] Figure 5 Partial enlarged bottom view of inner ring;

[0020] Figure 6 Top view of outer ring;

[0021] Figure 7 Partial enlarged top view of outer ring;

[0022] Figure 8 Partial enlarged bottom view of outer ring;

[0023] Figure 9 Structure schematic view of ball block and steel ball connecting position;

[0024] In the figure: 1, inner ring; 2, outer ring; 201, ball filling hole; 202, conical hole; 203, outer ring peach-shaped raceway; 3, steel ball; 4, ball block; 5, conical pin; 6, isolation block; 7, flange; 701, first radial flange; 702, second radial flange; 703, third radial flange; 8, No. 1 mounting hole; 9, No. 1 lightening groove; 10, No. 2 lightening groove; 11, No. 1 lightening hole; 12, No. 2 mounting hole; 13, No. 3 lightening groove; 14, No. 2 lightening hole; 15, No. 3 mounting hole; 16, No. 4 lightening groove; 17, No. 3 lightening hole; 18, No. 4 mounting hole; 19, No. 5 lightening groove; 20, No. 4 lightening hole; 21, No. 6 lightening groove; 22, radial threaded hole; 23, No. 5 lightening hole; 24, No. 7 lightening groove; 25, No. 8 lightening groove; 26, No. 6 lightening hole. DETAILED DESCRIPTION

[0025] In order to make the structure and function of the utility model more clear, the technical scheme in the utility model embodiment will be clearly and completely described below in combination with the drawings in the utility model embodiment.

[0026] Referring to the drawings Figures 1-9The application discloses a four-point contact ball rotary disc bearing with a special-shaped lightweight structure, which comprises an inner ring 1, an outer ring 2, a ball blocking block 4 and a conical pin 5; a steel ball 3 is arranged between the outer circumferential surface of the inner ring 1 and the inner circumferential surface of the outer ring 2, a filling ball hole 201 for mounting the steel ball is arranged on the outer ring 2 in the radial direction, a conical hole 202 is arranged on the outer ring in the axial direction, the center line of the conical hole 202 is perpendicular to the center line of the filling ball hole 201, the ball blocking block 4 for blocking the steel ball 3 is arranged in the filling ball hole 201, and the conical pin 5 for fixing the ball blocking block 4 is arranged in the conical hole 202. The cooperation of the conical pin (5) and the conical hole (202) ensures the firm fixing of the ball blocking block (4), prevents the steel ball (3) from falling off, and enhances the overall stability and service life of the bearing.

[0027] The steel ball 3 is provided in plurality, and further comprises an isolation block 6, the number of the isolation block 6 is same as that of the steel ball 3, and one isolation block 6 is arranged between adjacent two steel balls 3. The steel balls 3 are uniformly separated by the isolation block 6, the friction between the steel balls is reduced, the raceway shape is optimized, the bearing rotation is more flexible, the friction torque is smaller, and the operation efficiency of the equipment is improved.

[0028] The inner ring 1 is provided with an inner ring peach-shaped raceway 101, and the outer ring 2 is provided with an outer ring peach-shaped raceway 205; the steel ball 3 is arranged between the inner ring peach-shaped raceway 101 and the outer ring peach-shaped raceway 205. The four-point contact ball rotary disc structure is adopted, the inner ring peach-shaped raceway 101 and the outer ring peach-shaped raceway 205 are cooperated, the steel ball 3 forms four-point contact with the raceway, the bearing carrying capacity and the impact resistance are improved, and the bearing is suitable for the equipment with high reliability requirement.

[0029] The inner ring 1 is provided with a flange 7 which is outwardly extended from one end along the outer circumferential edge, and the flange 7 comprises a first radial flange 701, a second radial flange 702 and a third radial flange 703 in sequence from the inner diameter to the outer diameter. The inner ring flange 7 is designed as a multi-radial flange structure (the first radial flange 701, the second radial flange 702 and the third radial flange 703), and is provided with threaded holes and light holes in different radial directions, and the outer ring is provided with radial threaded holes 22, so that the bearing and other components can be conveniently installed and positioned, and the diversified installation requirements of users can be met.

[0030] A plurality of first mounting holes 8 are uniformly arranged on the first radial flange 701, the first mounting hole 8 is a threaded hole, one end of the first radial flange 701 close to the outer ring 2 is provided with a first weight-reducing groove 9, one end of the first radial flange 701 away from the outer ring 2 is provided with a second weight-reducing groove 10 and an eighth weight-reducing groove 25, the first weight-reducing groove 9 and the second weight-reducing groove 10 are respectively arranged between adjacent two first mounting holes 8, and a plurality of first weight-reducing holes 11 are uniformly arranged at the bottom of the first weight-reducing groove 9 and the second weight-reducing groove 10; the first mounting hole 8 is arranged at the bottom of the eighth weight-reducing groove 25.

[0031] The eighth weight-reducing groove 25 is a trapezoidal weight-reducing groove, which ensures the stability of the inner ring structure.

[0032] A plurality of second mounting holes 12, sixth weight-reducing holes 26 and third weight-reducing grooves 13 are arranged on the second radial flange 702; a second mounting hole 12 or a sixth weight-reducing hole 26 is arranged between two adjacent third weight-reducing grooves 13; the second mounting hole 12 includes two groups of mounting holes, which are symmetrically and vertically arranged; one group of mounting holes includes two second mounting holes 12, and a third weight-reducing groove 13 is arranged between the two second mounting holes 12; the other group of mounting holes includes two second mounting holes 12, and three third weight-reducing grooves 13 are arranged between the two second mounting holes 12; a plurality of second weight-reducing holes 14 are uniformly arranged at the bottom of the third weight-reducing groove 13; and the second mounting hole 12 is a threaded hole.

[0033] A plurality of third mounting holes 15 are uniformly arranged on the third radial flange 703, and the third mounting hole 15 is a through hole; a fourth weight-reducing groove 16 is arranged at one end of the third radial flange 703 close to the outer ring 2, the fourth weight-reducing groove 16 is arranged between two adjacent third mounting holes 15, and a plurality of third weight-reducing holes 17 are uniformly arranged at the bottom of the fourth weight-reducing groove 16.

[0034] A plurality of fourth mounting holes 18 are uniformly arranged on the outer ring 2, and a fifth weight-reducing groove 19, a sixth weight-reducing groove 21 and a seventh weight-reducing groove 24 are arranged at one end of the outer ring 2 away from the outer ring flange 7; the fifth weight-reducing groove 19, the sixth weight-reducing groove 21 and the seventh weight-reducing groove 24 are sequentially arranged between two adjacent fourth mounting holes 18; a plurality of fourth weight-reducing holes 20 are uniformly arranged at the bottom of the fifth weight-reducing groove 19, a fifth weight-reducing hole 23 is arranged at the bottom of the sixth weight-reducing groove 21, and a plurality of fourth weight-reducing holes 20 are uniformly arranged at the bottom of the seventh weight-reducing groove 24; and a radial threaded hole 22 is arranged on the outer circumferential surface between the fifth weight-reducing groove 19 and the seventh weight-reducing groove 24. The outer ring is arranged as an ultra-thin structure away from the position of the raceway.

[0035] Based on the above technical scheme, by arranging a plurality of groups of weight-reducing grooves and weight-reducing holes on the outer ring and the inner ring, and using trapezoidal weight-reducing grooves at key positions, the overall weight of the bearing is significantly reduced, while the strength and stability of the structure are ensured, meeting the needs of limited installation space and weight limitation. The design of the weight-reducing holes and the weight-reducing grooves not only reduces the weight, but also reduces the use of materials and the manufacturing cost, while the through hole design simplifies the machining process and improves the production efficiency.

[0036] The weight-reducing holes in the application are all through holes, and the depths of the weight-reducing grooves are different according to the thicknesses of the inner and outer rings.

[0037] The diameter of the conical hole 202 away from the flange 7 is greater than the diameter of the conical hole 202 close to the flange 7.

[0038] In the description of the utility model, need explain, the term "upper", "lower", "internal", "external" "front end", "rear end", "both ends", "one end", "the other end" and so on indicate the position relation or location relation is based on the position relation or location relation shown in the drawing, only for the convenience of describing the utility model and simplifying the description, and is not indicating or implying that the indicated device or element must have a particular orientation, a particular orientation and operation, therefore it cannot be understood as a limitation on the utility model.

[0039] The above disclosure is only the preferred embodiment of the present application, and of course cannot limit the scope of the application, so the equivalent changes made according to the claims of the present application still belong to the scope covered by the present application.

Claims

1. A profiled lightweight four-point contact ball slewing bearing, characterized in that: The application relates to a ball bearing, which comprises an inner ring (1), an outer ring (2), a ball blocking piece (4) and a conical pin (5); a steel ball (3) is arranged between the outer circumferential surface of the inner ring (1) and the inner circumferential surface of the outer ring (2), a filling ball hole (201) for installing the steel ball is arranged on the outer ring (2) in the radial direction, a conical hole (202) is arranged on the outer ring in the axial direction, the center line of the conical hole (202) is perpendicular to the center line of the filling ball hole (201), the ball blocking piece (4) for blocking the steel ball (3) is arranged in the filling ball hole (201), and the conical pin (5) for fixing the ball blocking piece (4) is arranged in the conical hole (202).

2. A four-point contact ball slewing ring bearing with a special-shaped lightweight structure according to claim 1, characterized in that: The steel ball (3) is provided in plurality, and the ball bearing further comprises an isolation piece (6), the number of the isolation piece (6) is same to that of the steel ball (3), and one isolation piece (6) is arranged between two adjacent steel balls (3).

3. The four-point contact ball slewing bearing with a special-shaped lightweight structure according to claim 1, characterized in that: The inner ring (1) is provided with an inner ring peach-shaped raceway (101), and the outer ring (2) is provided with an outer ring peach-shaped raceway (205); the steel ball (3) is arranged between the inner ring peach-shaped raceway (101) and the outer ring peach-shaped raceway (205).

4. The four-point contact ball slewing bearing with a special-shaped lightweight structure according to claim 1, characterized in that: One end of the inner ring (1) is provided with a flange (7) extending outward along the outer circumferential edge, and the flange (7) comprises a first radial flange (701), a second radial flange (702) and a third radial flange (703) from the inner diameter to the outer diameter.

5. A profiled lightweight four-point contact ball slewing ring bearing according to claim 4, characterized in that: A plurality of first installation holes (8) are uniformly arranged on the first radial flange (701), the first installation hole (8) is a threaded hole, one end of the first radial flange (701) close to the outer ring (2) is provided with a first weight-reducing groove (9), and the other end of the first radial flange (701) away from the outer ring (2) is provided with a second weight-reducing groove (10) and an eighth weight-reducing groove (25); the first weight-reducing groove (9) and the second weight-reducing groove (10) are respectively arranged between two adjacent first installation holes (8), and a plurality of first weight-reducing holes (11) are uniformly arranged on the bottom of the first weight-reducing groove (9) and the second weight-reducing groove (10); the first installation hole (8) is arranged on the bottom of the eighth weight-reducing groove (25).

6. A profiled lightweight four-point contact ball slewing ring bearing according to claim 5, characterized in that: The eighth weight-reducing groove (25) is a trapezoidal weight-reducing groove.

7. A four-point contact ball slewing ring bearing with a special-shaped lightweight structure according to claim 4, characterized in that: A plurality of second installation holes (12), sixth weight-reducing holes (26) and third weight-reducing grooves (13) are arranged on the second radial flange (702); a second installation hole (12) or a sixth weight-reducing hole (26) is arranged between two adjacent third weight-reducing grooves (13); the second installation hole (12) comprises two groups of installation holes, and the two groups of installation holes are symmetrically and perpendicularly arranged; one group of installation holes comprises two second installation holes (12), and one third weight-reducing groove (13) is arranged between the two second installation holes (12); the other group of installation holes comprises two second installation holes (12), and three third weight-reducing grooves (13) are arranged between the two second installation holes (12); a plurality of second weight-reducing holes (14) are uniformly arranged on the bottom of the third weight-reducing groove (13); and the second installation hole (12) is a threaded hole.

8. A profiled lightweight four-point contact ball slewing ring bearing according to claim 4, characterized in that: The third radial flange (703) is uniformly provided with a plurality of No. 3 mounting holes (15), the No. 3 mounting holes (15) are light holes; one end of the third radial flange (703) close to the outer ring (2) is provided with a No. 4 lightening groove (16), the No. 4 lightening groove (16) is arranged between two adjacent No. 3 mounting holes (15), and the bottom of the No. 4 lightening groove (16) is uniformly provided with a plurality of No. 3 lightening holes (17).

9. A profiled lightweight four-point contact ball slewing ring bearing according to claim 4, characterized in that: The outer ring (2) is uniformly provided with a plurality of No. 4 mounting holes (18), one end of the outer ring (2) away from the outer ring flange (7) is provided with a No. 5 lightening groove (19), a No. 6 lightening groove (21) and a No. 7 lightening groove (24), the No. 5 lightening groove (19), the No. 6 lightening groove (21) and the No. 7 lightening groove (24) are sequentially arranged between two adjacent No. 4 mounting holes (18); the bottom of the No. 5 lightening groove (19) is uniformly provided with a plurality of No. 4 lightening holes (20), the bottom of the No. 6 lightening groove (21) is provided with a No. 5 lightening hole (23), and the bottom of the No. 7 lightening groove (24) is uniformly provided with a plurality of No. 4 lightening holes (20); the outer circumferential surface between the No. 5 lightening groove (19) and the No. 7 lightening groove (24) is provided with a radial threaded hole (22).

10. A profiled lightweight four-point contact ball slewing ring bearing according to claim 4, characterized in that: The diameter of one end of the conical hole (202) away from the flange (7) is greater than the diameter of one end of the conical hole (202) close to the flange (7).

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