CN116717539A - A spherical roller rotating bearing with a straight raceway busbar - Google Patents

Abstract

The invention discloses a spherical roller rotating bearing with a straight raceway busbar. The rollers of the bearing that bear radial force will not cause radial vibration when vibrating in the axial direction. The rollers of the bearing that bear axial force will vibrate in the radial direction. When this happens, axial vibration will not be caused. Use the radial force and the floating block to make the inner and outer ring rollers fit together, or make the radial force act on the inner ring to eliminate the one-way clearance of the inner and outer ring rollers, eliminating the problem of rolling. The sub-vibration causes radial or axial vibration of the rotating shaft, and by opening grooves on the outer ring raceway, the fitting position of the inner and outer ring rollers is stabilized, making the rotation of the rotating shaft more stable.

Description

A spherical roller rotating bearing with a straight raceway busbar

Technical field

The present invention relates to the technical field of bearings, and in particular to a spherical roller rotary bearing with a straight raceway busbar.

Background technique

Existing radial rolling bearings mainly include cylindrical roller bearings and radial ball bearings. In actual use, the cylindrical roller will cause the axis parallelism of the cylindrical roller and the inner and outer rings to change due to the vibration of the cage, causing the bearing to rotate during the rotation process. The runout error occurs in the radial ball bearing. The inner and outer raceways of the radial ball bearing are arc-shaped bearings. When subjected to axial vibration during high-speed rotation, the rollers will vibrate in the axial direction. Because the raceway is arc-shaped, axial vibration It means radial vibration. The radial runout error of the above two bearings is difficult to control. The clearance of the radial rolling bearing will become a vibrating radial space when the rotation is unbalanced. The above factors restrict the improvement of the accuracy of the radial rolling bearing. . Plane bearings and radial bearings used to bear axial force also have the same problem, that is, the rollers of the roller rollers will be skewed due to the axis, or the ball rollers will vibrate in the radial direction, causing axial vibration.

Contents of the invention

The technical problem to be solved by this invention is a spherical roller rotary bearing with a straight raceway busbar. The vibration of the spherical roller in the non-load-bearing direction will cause vibration in the load-bearing direction due to the arc shape of the raceway and due to The existence of clearance gives the bearing room to vibrate in the load-bearing direction.

The present invention is achieved through the following technical solutions: a spherical roller rotary bearing with a straight raceway busbar, including an outer ring, an inner ring, a spherical roller, a force applying device and a force applying base. The outer ring is composed of a fixed block and a force applying base. The combination of the two forms an inner hole. The inner hole and the outer raceway of the inner ring are both cylindrical. The rollers are spherical. There is a roller retaining device to restrict the rollers from rolling within the range of the raceway and apply force. The seat and the fixed block are relatively fixed, and there is a force-applying device between the force-applying seat and the floating block to press the floating block toward the fixed block so that the outer ring, inner ring and spherical roller fit together.

As a preferred technical solution, the inner hole of the outer ring composed of the fixed block and the sliding block has three grooves. The parting surface between the fixed block and the sliding block is provided with two of the grooves to allow the outer ring to pass through the roller. The support for the inner ring is divided into three sections.

As a preferred technical solution, the central angle corresponding to the arc length of the groove is between 30 and 100 degrees, and the depth of the groove is greater than the maximum convex value obtained on the inner ring at any arc center angle of the groove.

As a preferred technical solution, the force applying device is a spring and/or an air cylinder and/or an oil cylinder/or an elastic pressure plate.

As a preferred technical solution, there is a gap between the fixed block and the sliding block, so that the outer ring and the inner ring can remain in close contact after the outer ring and the inner ring are worn.

As a preferred technical solution, the inner ring has a solid shaft structure.

The present invention provides a spherical roller rotary bearing with a linear raceway busbar, which is characterized in that it includes spherical rollers in the inner and outer rings, the inner and outer ring raceways are cylindrical, the rollers are spherical, and radial force acts on the inner ring. , so that the clearance between the inner ring, roller and outer ring is eliminated unilaterally in the direction of radial force.

As a preferred technical solution, the outer ring raceway has a groove in the direction of radial force. Under the action of radial force, both sides of the groove form a support area for the inner ring when the roller passes.

As a preferred technical solution, the central angle corresponding to the arc length of the groove (8) is between 30 and 120 degrees, and the groove depth is greater than the contact part between the rotating shaft and the bearing to obtain the maximum convex value at any groove arc center angle.

As a preferred technical solution, the radial force applying device is a magnetic force applying device. There is a sucked cup on the rotating shaft, and a magnet on the base to attract the sucked cup.

As a preferred technical solution, the spherical roller hole on the spherical roller cage is a cylindrical hole with a spherical bottom.

The present invention is a spherical roller rotating bearing with a linear raceway busbar. It has two cylindrical discs, each with an annular plane perpendicular to the axis center line as a raceway. The two raceways are opposite, and there is a gap between the two raceways. The spherical roller has a boss on the outer ring of the raceway on one side and an inner hole as a cylindrical surface, which is used to limit the radial position of the spherical roller. One of the two discs is connected to the rotating shaft, and the other is stationary to withstand rotation. Axial force.

As a preferred technical solution, there is a roller cage between the rollers. The roller cage is cylindrical and has several holes on the outer circle for placing spherical rollers. Its thickness is smaller than the diameter of the spherical roller, and its outer diameter is smaller than the diameter of the spherical roller. The inner hole is used to limit the radial position of the spherical roller.

As a preferred technical solution, the rollers, inner and outer rings, and disc materials are structural ceramics.

The beneficial effects of the present invention are: the rollers of the bearing bearing radial force of the present invention will not cause radial vibration when axially vibrating; the rollers of the bearing bearing axial force will not cause axial vibration when vibrating radially. Use the radial force and the sliding block to make the inner and outer ring rollers fit together, or make the radial force act on the inner ring to eliminate the one-way clearance of the inner and outer ring rollers, eliminating the radial or radial movement of the rotating shaft caused by roller vibration. Axial vibration, and the grooves on the outer ring raceway stabilize the fitting position of the inner and outer ring rollers, making the rotation of the rotating shaft more stable.

Description of the drawings

In order to explain the embodiments of the present invention or the technical solutions in the prior art more clearly, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings in the following description are only These are some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without exerting creative efforts.

Figure 1 is a schematic cross-sectional view of the single-row roller bearing of the present invention;

Figure 2 is a schematic cross-sectional view of the double-row roller bearing of the present invention;

Figure 3 is a schematic cross-sectional view of the multi-row roller bearing of the present invention;

Figure 4 is a schematic diagram of the inner and outer rings containing cages of the present invention;

Figure 5 is a schematic diagram of the cage of the present invention;

Figure 6 is a schematic diagram of the outer ring with a sliding block of the present invention;

Figure 7 is a schematic diagram of the inner ring with radial force of the present invention;

Figure 8 is a schematic diagram of the axial bearing of the present invention;

Figure 9 is a schematic diagram of the application of the magnetic one-way clearance elimination device of the present invention;

Figure 10 is a schematic diagram of the application of the belt tension of the present invention as a one-way clearance elimination device;

Figure 11 is a schematic diagram of the application of the spherical roller rotating bearing with a straight raceway busbar according to the present invention;

Figure 12 is a schematic diagram of the axial bearing spherical roller cage of the present invention;

Explanation of reference symbols:

1. Inner ring; 2. Spherical roller; 3. Outer ring; 4. Radial bearing roller cage; 5. Groove; 6. Spring; 7. Axial bearing with retaining ring side plate; 8. Axial bearing Inner hole of bearing roller retaining ring; 9. Axial bearing flat side plate; 10. Radial magnetic suction device; 11. Radial magnetic suction ring; 12. Axial magnetic suction device; 13. Axial magnetic suction ring ; 14. Pulley; 15. V-belt; 16. Radial bearing side; 17. Axial bearing roller cage; 18. Rotating shaft; 31. Outer ring fixed block; 32. Floating block; 33. Force base; 34 , integral outer ring with groove.

Detailed ways

All features disclosed in this specification, or all steps in a method or process disclosed, except mutually exclusive features and/or steps, may be combined in any way.

Any feature disclosed in this specification (including any appended claims, abstract and drawings) may be replaced by other equivalent features or alternative features serving a similar purpose, unless specifically recited. That is, unless otherwise stated, each feature is only one example in a series of equivalent or similar features.

In the description of the present invention, it should be understood that the terms "one end", "other end", "outside", "upper", "inside", "horizontal", "coaxial", "center", "end" ", "length", "outer end", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply the device or device referred to. Elements must have a specific orientation, be constructed and operate in a specific orientation and therefore are not to be construed as limitations of the invention.

Furthermore, in the description of the present invention, "plurality" means at least two, such as two, three, etc., unless otherwise expressly and specifically limited.

The terms used in the present invention, such as "upper", "above", "lower", "below" and other terms indicating relative positions in space, are used for the purpose of convenience of explanation to describe one unit or feature as shown in the drawings relative to another. A relationship between a unit or a feature. The spatially relative terms may be intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the device in the diagram is turned over, elements described as "below" or "beneath" other elements or features would then be oriented "above" the other elements or features. Thus, the exemplary term "below" may encompass both upper and lower orientations. The device may be otherwise oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly

In the present invention, unless otherwise explicitly stated and limited, terms such as "setting", "socketing", "connecting", "penetrating" and "plugging" should be understood in a broad sense. For example, it can be a fixed connection, It can also be detachably connected, or integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or indirectly connected through an intermediate medium; it can be the internal connection of two elements or the interaction of two elements relationship, unless otherwise expressly qualified. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

As shown in Figures 1 to 12, a spherical roller rotary bearing with a linear raceway busbar according to the present invention consists of an outer ring 3, an inner ring 1, a spherical roller 2, a force applying device and a force applying base 33. Ring 3 is composed of fixed block 31 and floating block 32. The combination of the two forms an inner hole. The inner hole and the outer raceway of the inner ring are both cylindrical. The roller 22 is spherical and has a roller retaining device to limit the roller. When rolling within the range of the raceway, the force-applying seat and the fixed block 31 are relatively fixed. There is a force-applying device between the force-applying seat and the floating block 32. The floating block 32 is pressed toward the fixed block 31, so that the inner ring of the outer ring and the spherical roller are Sub fit.

Example 1

As shown in Figures 1 to 9, the base or outer ring is omitted in the figure. Two sets of radial bearings are installed on the rotating shaft 18, with an inner ring 10, a number of rollers 2 on the inner ring and the outer ring, and an outer ring 34 on the outside. , the outer ring 34 has a groove 5 (see Figure 7). The arrow on the axis is the radial force direction aligned with the middle of the groove. There are also two sets of radial force devices, fixed on the base or the outer ring. The magnetic suction device 10 is fixed on the radially magnetically attracted ring on the rotating shaft 18, and the axial bearing with retaining ring side plate 7 fixed at the shaft end. The axial bearing flat side plate 9 is installed on the base or outer ring. There are a number of spherical rollers 2 between the side plate of the bearing with retaining ring and the flat side plate of the axial bearing. The outer ring of the side plate 7 of the axial bearing with retaining ring is equipped with an axial magnetic ring 13, corresponding to the axial magnetic ring 13. The outer ring of the bearing flat side plate 9 is equipped with an axial magnetic attraction device 12.

During operation, the axial magnetic suction device 12 attracts the axial magnetic suction ring to pull the axial bearing retaining ring side plate and shaft 18 toward the on-axis magnetic suction device 12 fixed on the base or outer ring, which is installed on the axial bearing. The circular roller 2 between the side plate with retaining ring and the flat side plate 9 of the axial bearing presses the planes on both sides to achieve axial positioning. The two radial magnetic devices 10 attract the radially magnetically attracted balls 11 to move the rotating shaft 18 The overall assembly is pulled in the direction of the radial magnetic attraction device. The groove 5 (see Figure 7) on the grooved overall outer ring is on the same side of the radial magnetic attraction device. Under the action of the radial magnetic attraction force, the inner ring 1 and the rotating shaft 18 It is fitted to the grooves and both sides of the grooved integral outer ring 34 and the clearance is eliminated. During the rotation, the rotating shaft 18 is pulled by three sets of magnetic devices to maintain single-sided contact between the radial and axial bearings and Since the bearing raceway generatrix is a straight line, the serial movement of the spherical roller 2 in the non-pressing direction will not cause radial and axial runout of the rotating shaft 18 . The grooved integral outer ring, inner ring, spherical rollers, axial bearing retaining ring side plates, and axial bearing flat side plates are all made of zirconia ceramics.

Example 2

As shown in Figure 10, the difference from the embodiment is that the radial magnetic suction device 10 and the radial magnetic suction ring are eliminated. A pulley 14 is fixed on the rotating shaft 18 and a belt 15 is attached to it. The tension force acting on the belt 15 is The tight force replaces the magnetic attraction force in Example 1.

Example 3

What is different from Embodiments 1 and 2 is that the spherical roller rotary bearing has a linear outer ring raceway busbar (Fig. 6). The outer ring fixed block 31 and the sliding block 32 form a bearing outer ring to form an inner hole for the bearing raceway. The busbar is a straight line, and there are three grooves 5 in the inner hole. There is a force-applying base 33 fixed on the outer ring fixed block 31. There is a spring between the force-applying base 33 and the floating block 32 to press the floating block toward the fixed block, so that the floating block and the fixed block are The outer ring, roller and inner ring composed of blocks are pressed to form three contact areas. When the rotating shaft 18 rotates, the elastic force of the spring 6 completely eliminates the clearance around the rotating shaft 18, so the rotation is stable and due to the arc of the raceway The line is a straight line, so the movement of the spherical rollers in the non-pressure direction will not cause radial and axial runout of the rotating shaft 18. The outer ring fixed block, floating block, axial bearing with retaining ring side plate, axial bearing The flat side plates and spherical rollers are made of zirconia ceramics.

As shown in Figure 12, the roller 22 is spherical, and has a roller retaining device to limit the rolling of the roller within the range of the raceway. The force applying seat and the fixed block 31 are relatively fixed, and there is a force applying device between the force applying seat and the sliding block 32. , press the floating block 32 toward the fixed block 31 to make the outer ring, inner ring and spherical roller fit.

The above are only specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that are not thought of through creative efforts should be covered by the protection scope of the present invention. Therefore, the protection scope of the present invention should be subject to the protection scope defined by the claims.

Claims (16)

1. The utility model provides a ball roller rotary bearing that raceway generating line is sharp, a serial communication port, including outer lane (3), inner circle (1), ball roller (2), force application device and application base (33) are constituteed, outer lane (3) are by fixed block (31) and slider (32), both make up and form an hole, the outer round raceway of this hole and inner circle is cylindrical, roller (22) are spherical, there is roller retaining device to restrict the roller to roll in the raceway scope, force application seat and fixed block (31) are fixed relatively, there is force application device between force application seat and slider (32), press slider (32) towards fixed block (31) direction, make outer lane inner circle and ball roller laminating.

2. The spherical roller rotary bearing with a straight raceway bus according to claim 1, wherein: the force application device is a spring (36) and/or an air cylinder and/or an oil cylinder and/or an elastic pressing plate.

3. The spherical roller rotary bearing with a straight raceway bus according to claim 1, wherein: the inner hole of the outer ring formed by the fixed block and the floating block is provided with three grooves, and the parting surface between the fixed block and the floating block is arranged in two grooves, so that the outer ring is divided into three sections through the support of the rollers to the inner ring.

4. A spherical roller rotary bearing with a straight raceway bus as claimed in claim 1 or 3, wherein: the central angle corresponding to the arc length of the groove (9) is 30-100 degrees, and the depth of the groove (9) is larger than the maximum protrusion value obtained on the arc center angle of any groove (9) on the inner ring.

5. The spherical roller rotary bearing with a straight raceway bus according to claim 1, wherein: gaps are formed between the fixed blocks (31) and the floating blocks (32), so that the outer ring and the inner ring (1) can be kept close to each other after the outer ring and the inner ring (1) are worn.

6. The spherical roller rotary bearing with linear raceway generatrix is characterized by comprising an inner ring and an outer ring and spherical rollers, wherein the raceways of the inner ring and the outer ring are cylindrical, the rollers are spherical, a roller retaining device is used for limiting the rollers to roll in the raceway range, and a radial force application device is used for applying radial force on the inner ring so as to remove the play between the inner ring and the rollers and the outer ring on one side in the radial force direction.

7. The spherical roller rotation bearing with a straight raceway bus as set forth in claim 6, wherein: the outer ring raceway is provided with a groove in the radial force acting direction, and support areas of the inner ring are formed on two sides of the groove under the radial force acting direction when the inner ring passes through the rollers.

8. The spherical roller rotation bearing with a straight raceway bus according to claim 7, wherein: the angle of the central angle corresponding to the arc length of the groove (8) is 30-120 degrees, and the depth of the groove is larger than the maximum protrusion value of the contact part of the rotating shaft and the bearing on any arc center angle of the groove.

9. The spherical roller rotation bearing with a straight raceway bus as set forth in claim 6, wherein: the radial force application device is a magnetic force application device, the rotating shaft is provided with a sucker, and the base is provided with a magnet for attracting the sucker.

10. The spherical roller rotation bearing with a straight raceway bus as set forth in claim 6, wherein: the shaft is fixed with a belt pulley or a hinge wheel or a synchronous wheel, and the tension of a belt or a chain or a synchronous belt is used as the radial force of a radial force application device.

11. The ball roller rotation bearing of claim 1 or 6 wherein the raceway bus is linear, wherein: the spherical roller and the spherical roller hole on the retainer are through holes with spherical bottoms.

12. The ball roller rotation bearing of claim 1, 6 or 11 wherein the raceway bus is linear, characterized in that: the roller retainer is a radial bearing side plate, and two side plates are arranged on two sides of an outer ring or an inner ring of the rotary bearing, so that the roller or the combination of the roller and the retainer arranged on the roller retainer is limited in the range of the two side plates.

13. A spherical roller rotating bearing with a linear raceway bus, which is characterized in that: the two cylindrical discs are respectively provided with an annular plane perpendicular to the axis as a rollway, the two rollways are opposite, a spherical roller is arranged between the two rollways, a boss is arranged on the outer ring of one disc rollway, an inner hole is a cylindrical surface for limiting the radial position of the spherical roller, when the cylindrical disc is installed and used, the center line of the cylindrical surface coincides with the center line of the rotating shaft, one of the two discs is fixed with the rotating shaft, and the other disc is static and used for bearing the axial force of the rotating shaft.

14. The spherical roller rotation bearing with a straight raceway bus of claim 12, wherein: the roller retainer is arranged between the rollers, the roller retainer is in a cylindrical shape, a plurality of holes are formed in the outer circle and used for placing the spherical rollers, the thickness of the roller retainer is smaller than the diameter of the spherical rollers, and the outer diameter of the roller retainer is smaller than an inner hole used for limiting the radial position of the spherical rollers.

15. A spherical roller rotary bearing having a straight raceway bus according to claim 1 or 3 or 13, characterized in that: the roller, the inner ring, the outer ring and the disc are made of structural ceramics.

16. The ball roller rotation bearing of claim 1 or 6 wherein the raceway bus is linear, wherein: the inner ring is of an integral structure with the rotating shaft.