High-bearing-capacity self-aligning linear composite scraper bearing

Abstract

The utility model discloses a high-bearing-capacity self-aligning linear composite scraper bearing, and relates to the technical field of bearings. The bearing comprises a sleeve, a retainer is arranged outside the sleeve, a plurality of rows of ball pockets are formed in the circumferential wall of the retainer, steel balls are arranged in the ball pockets, an inner ring is arranged outside the retainer, a boss is fixedly arranged on the outer circumferential wall of the inner ring, and half outer rings are symmetrically arranged outside the boss. The utility model provides a high-bearing-capacity self-aligning linear composite scraper bearing which is large in radial bearing capacity and capable of bearing an axial load in any direction, and solves the problems of insufficient bearing capacity and single axial capacity of a bearing in the prior art.

Description

TECHNICAL FIELD

[0001] The utility model belongs to bearing technical field, especially, relate to a kind of high load self-aligning straight line composite doctor blade bearing. BACKGROUND

[0002] Doctor blade is the component commonly used on paper machine, its main function is to add linear pressure to roll surface along width direction, to achieve the purpose of cleaning roll surface, the working condition of general doctor blade bearing is high load, high temperature and high humidity, and vibration impact load is accompanied in axial reciprocating movement process, so the use of today's doctor blade bearing is mainly designed to high load as main design target to reduce the fatigue failure of bearing parts under the condition of meeting working state;

[0003] Through search, the authorization announcement No.CN215861345U discloses a kind of novel high-strength self-aligning straight line composite doctor blade bearing, the structure used in this patent can realize self-aligning and reciprocating motion, but can only bear single direction axial load (one side of assembly slot cannot bear axial load), simultaneously, the structure can be designed with less number of steel ball due to spherical surface limitation, so that the radial bearing capacity of steel ball as a whole is reduced, to avoid failure, the overall size of bearing needs to be improved, which is not conducive to mechanism space design.

[0004] Therefore, we provide a kind of high load self-aligning straight line composite doctor blade bearing to solve the problems in the above. INVENTION CONTENTS

[0005] The utility model aims at providing a kind of high load self-aligning straight line composite doctor blade bearing with large radial bearing capacity and can bear any direction axial load, solve the problem of insufficient bearing capacity and single axial capacity in prior art.

[0006] To solve the above technical problems, the utility model is realized by the following technical schemes:

[0007] The utility model is a kind of high load self-aligning straight line composite doctor blade bearing, including sleeve, the outside of sleeve is equipped with retainer, multiple rows of ball pockets are opened on the peripheral wall of retainer, steel ball is arranged in the interior of ball pocket, the outside of retainer is provided with inner ring, the outer peripheral wall of inner ring is fixed with boss, the outside of boss is symmetrically provided with half outer ring.

[0008] The utility model is further provided as, the outer peripheral wall of boss is arc-shaped setting.

[0009] The utility model is further provided as, oil hole is opened on the peripheral wall of inner ring, one end of oil hole penetrates boss, oil groove is opened on the position of oil hole corresponding the outer peripheral wall of boss.

[0010] The utility model is further provided as, the inner peripheral wall of half outer ring is arc-shaped setting matched with boss.

[0011] The ball pocket hole is a conical pocket hole.

[0012] The number of ball pocket holes in each column is the same, and the ball pocket holes in adjacent columns are staggered.

[0013] The cage material is PEEK material.

[0014] The surfaces of the half outer ring, the inner ring, the boss and the sleeve are blackened.

[0015] The utility model has the following beneficial effects:

[0016] The inner ring and the boss structure save assembly space and raw materials, can allow more steel ball groups, and make the steel ball group more suitable for high load bearing, and the joint part formed by the boss and the half outer ring and the steel ball part are more matched in load capacity;

[0017] The half outer ring structure makes the high load aligning straight line composite scraper bearing easier to assemble, can bear axial load in any direction during work, and the arc surface of the boss can be adjusted in clearance after wear, effectively compensating the clearance change caused by wear;

[0018] The conical design of the ball pocket hole in the cage better guides the movement of the steel ball, improves the stability during movement, the oil hole provides lubrication for the steel ball, the oil groove provides lubrication for the arc surface between the boss and the half outer ring, and the opening of the oil groove and the oil hole can improve the flow of lubricant and improve the lubrication efficiency;

[0019] The surface blackening treatment ensures that the bearing works in high temperature and high humidity corrosion resistant conditions, and is more beneficial to the service life of the high load aligning straight line composite scraper bearing.

[0020] Of course, any product implementing the utility model does not necessarily need to achieve all the advantages described above. DRAWINGS

[0021] In order to more clearly illustrate the technical scheme of the embodiments of the utility model, the following will briefly introduce the drawings needed to be used in the embodiment description, and obviously, the drawings in the following description are only some embodiments of the utility model, and for those skilled in the art, other drawings can be obtained according to these drawings without creative labor.

[0022] Fig. 1 It is a kind of high load aligning straight line composite scraper bearing overall structural diagram.

[0023] Fig. 2 It is a kind of high load aligning straight line composite scraper bearing internal structure diagram.

[0024] Fig. 3 It is a kind of high bearing aligning straight line composite doctor blade bearing's exploded view.

[0025] In the drawings, the component list represented by each mark is as follows:

[0026] 1-outer ring, 2-sleeve, 3-inner ring, 301-tub, 302-oil groove, 303-oil hole, 4-steel ball, 5-retainer, 501-ball pocket hole. DETAILED DESCRIPTION

[0027] The technical scheme in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application. EMBODIMENT

[0028] Please refer to Figs. 1-3 The present application is a kind of high bearing aligning straight line composite doctor blade bearing, including sleeve 2, the outside of sleeve 2 is provided with retainer 5, for ensuring the relative position between each steel ball 4, a plurality of ball pocket holes 501 are opened on the peripheral wall of retainer 5, for providing installation space for steel ball 4, the inside of ball pocket hole 501 is provided with steel ball 4, steel ball 4 is in contact with the outer peripheral wall of sleeve 2 and the inner peripheral wall of inner ring 3, provides the back and forth movement of the present high bearing aligning straight line composite doctor blade bearing, the outside of retainer 5 is provided with inner ring 3, the outer peripheral wall of inner ring 3 is fixed with tub 301, the outside of tub 301 is symmetrically provided with half outer ring 1, the outer peripheral wall of tub 301 is in close contact with the inner peripheral wall of half outer ring 1, which constitutes a joint bearing to provide aligning performance.

[0029] Specifically, the outer peripheral wall of tub 301 is arc-shaped, the axial width of tub 301 is designed to be equivalent to the radial load capacity of the plurality of ball parts, so as to design the width of tub 301 and the width of inner ring 3 according to the assembly space, the width of tub 301 is not limited by the width of inner ring 3, which is more flexible, so that more steel ball 4 parts can be designed to allow more steel ball 4 parts, so as to increase the rated load of steel ball 4 parts.

[0030] Oil hole 303 is opened on the peripheral wall of inner ring 3, one end of oil hole 303 penetrates tub 301, oil groove 302 is opened on the position of oil hole 303 corresponding to the outer peripheral wall of tub 301, oil hole 303 provides lubrication for steel ball 4, oil groove 302 provides lubrication for the arc surface between tub 301 and half outer ring 1, which can ensure uniform distribution of lubricant, improve lubrication effect, reduce friction and wear, make the arc surface work flexibly and not easy to fatigue damage.

[0031] The inner peripheral wall of the half outer ring 1 is arc-shaped and matched with the boss 301. This arrangement enables the half outer ring 1 to be assembled to the boss 301 without an assembly groove, making it easier to assemble. Since there is no assembly groove, the high-load aligning linear composite scraper bearing can bear axial load in any direction during operation. The design of the two half outer rings 1 enables the clearance between the half outer rings 1 to be adjusted after the arc-shaped surface is worn, effectively compensating for the change in clearance due to wear, thereby prolonging the service life.

[0032] The number of ball pockets 501 in each column is the same to ensure smooth movement. The ball pockets 501 of adjacent columns are staggered and have the same spacing, allowing more groups of steel balls 4 to be arranged in the same width, while allowing the diameter of the steel balls 4 to be larger, thereby improving the radial load capacity of the bearing.

[0033] The ball pocket 501 is a tapered pocket. The tapered pocket can better fit the contact with the steel ball 4, effectively reducing the sliding and collision of the steel ball 4 in the tapered pocket, better guiding the movement of the steel ball 4, improving the movement stability of the high-load aligning linear composite scraper bearing, reducing the wear rate, and better storing and transporting lubricating oil, improving the flow of lubricant to improve lubrication efficiency and prolong the service life. In addition, the steel ball 4 cannot fall out under the restriction of the tapered pocket, which can prevent the steel ball 4 from falling during operation or transportation, thereby improving the safety design of the high-load aligning linear composite scraper bearing.

[0034] The retainer 5 is made of PEEK material, which has excellent high-temperature resistance, corrosion resistance, wear resistance, and low friction coefficient, and can operate under no or little lubrication conditions, reducing friction and wear, and maintaining good mechanical strength and dimensional stability under high temperature and high load conditions.

[0035] The surfaces of the half outer ring 1, the inner ring 3, the boss 301, and the sleeve 2 are blackened, which can effectively isolate moisture, salt mist, and other corrosive media, thereby improving the corrosion resistance of the high-load aligning linear composite scraper bearing. At the same time, the surface hardness and wear resistance of the blackened surface are improved, and the surface can improve the adhesion of the lubricant, reduce the friction coefficient, and significantly reduce wear, especially under harsh working conditions such as high temperature, thereby prolonging the service life of the bearing.

[0036] In the description of the present specification, the description of the terms "one embodiment", "an example", "a specific example" and the like means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present specification, the illustrative description of the above terms does not necessarily mean the same embodiment or example. Furthermore, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

Claims

1. A high load capacity, self-aligning, straight-line composite knife bearing comprising a sleeve (2), characterized in that: The outer part of the sleeve (2) is provided with a retainer (5), a plurality of rows of ball pocket holes (501) are arranged on the peripheral wall of the retainer (5), a steel ball (4) is arranged in the ball pocket hole (501), the outer part of the retainer (5) is provided with an inner ring (3), the outer peripheral wall of the inner ring (3) is fixedly provided with a boss (301), and the outer part of the boss (301) is symmetrically provided with a half outer ring (1).

2. A high load capacity self-aligning straight line composite slider bearing according to claim 1, characterized in that: The outer peripheral wall of the boss (301) is arranged in an arc shape.

3. A high load capacity self-aligning straight line composite slider bearing according to claim 2, characterized in that: An oil hole (303) is arranged on the peripheral wall of the inner ring (3), one end of the oil hole (303) penetrates the boss (301), and an oil groove (302) is arranged at the position of the oil hole (303) and corresponds to the outer peripheral wall of the boss (301).

4. A high load capacity self-aligning straight line composite slider bearing according to claim 3, characterized in that: The inner peripheral wall of the half outer ring (1) is arranged in an arc shape matched with the boss (301).

5. The high load capacity self-aligning straight line composite slider bearing of claim 1, wherein: The ball pocket hole (501) is a conical pocket hole.

6. A high load capacity self-aligning straight line composite slider bearing according to claim 5, characterized in that: The number of the ball pocket holes (501) in each row is the same, the ball pocket holes (501) in adjacent rows are staggered, and the spacing between the ball pocket holes (501) in adjacent rows is the same.

7. The high load capacity self-aligning straight line composite slider bearing of claim 1, wherein: The material of the retainer (5) is PEEK.

8. The high load capacity self-aligning straight line composite slider bearing of claim 1, wherein: The surfaces of the half outer ring (1), the inner ring (3), the boss (301) and the sleeve (2) are blackened.

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