Lubricating wear-resistant linear bearing

Abstract

The utility model discloses a lubricating wear-resistant linear bearing, which relates to the technical field of linear bearings, and comprises a shell, a retainer is movably arranged in the shell, a plurality of balls are arranged in the retainer, eight annularly distributed placing grooves are formed in the retainer, a plurality of rolling grooves matched with the balls are formed in the placing grooves, and the rolling grooves are arranged in the rolling grooves. An oil liquid box is fixedly arranged on the upper side of the outer surface of the shell, a liquid storage cavity is formed in the oil liquid box, through grooves are symmetrically formed in the lower side of the liquid storage cavity, and two oil inlet grooves used in cooperation with the through grooves are formed in the upper side of the outer surface of the shell. By means of the specially-designed structures such as the oil liquid box, the through groove and the lubricating groove, lubricating oil can be conveniently provided for the ball, friction between the ball and all parts is effectively reduced, abrasion is reduced, the service life of the linear bearing is prolonged, and reliability and stability of equipment operation are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of linear bearings, in particular to a lubricating and wear-resistant linear bearing. Background Art

[0002] Linear bearings are a type of linear motion system used in conjunction with cylindrical shafts for linear travel. Linear bearings achieve linear motion by rolling the rolling elements between the inner and outer sleeves. When the shaft moves in a straight line, the rolling elements, guided by the cage, roll between the shaft and the outer sleeve, converting the sliding friction between the shaft and the outer sleeve into rolling friction, thereby greatly reducing friction and improving motion efficiency and precision.

[0003] However, the prior art still has the following problems:

[0004] Most linear bearings in the existing technology are not convenient for timely lubrication of the bearings. They usually rely only on a small amount of grease applied during initial assembly. During long-term operation, it is difficult to effectively replenish the grease. As a result, the grease is gradually consumed as the operating time increases, and the heat and wear generated by friction cannot be relieved in time, which accelerates the wear of the internal components of the bearing, thereby shortening the overall service life of the linear bearing. If the ball bearings cannot be lubricated in time, the metal debris generated by the friction between the ball bearings and various components cannot be carried away and discharged by the lubricating oil in time. These metal debris will further aggravate the wear between the ball bearings and other components, forming a vicious cycle.

[0005] In response to the above problems, the inventors proposed a lubricated wear-resistant linear bearing to solve the above problems. Utility Model Content

[0006] In order to solve the problem that it is inconvenient to lubricate the linear bearings in a timely manner, the purpose of the utility model is to provide a lubricated and wear-resistant linear bearing.

[0007] In order to solve the above technical problems, the utility model adopts the following technical solutions: a lubricated wear-resistant linear bearing, comprising a shell, a retaining frame movably provided in the shell, and a plurality of balls provided in the retaining frame, eight placement grooves distributed in an annular manner are provided in the retaining frame, and a plurality of rolling grooves for cooperating with the balls are provided in the placement grooves, an oil box is fixedly provided on the upper side of the outer surface of the shell, and a liquid storage cavity is provided inside the oil box, and a through groove is symmetrically provided on the lower side of the liquid storage cavity, two oil inlet grooves for cooperating with the through groove are provided on the upper side of the outer surface of the shell, and a plurality of lubrication grooves are provided on the outer surface of the retaining frame, and there are eight lubrication grooves, and the lubrication grooves are connected to the corresponding placement grooves.

[0008] Preferably, a refueling port is provided on the upper surface of the oil box, and a box cover is engaged with the upper end of the refueling port, an inverted U-shaped plate is provided on one side of the oil box, and a baffle is symmetrically fixed on the side of the inverted U-shaped plate close to the oil box, one end of the baffle passes through the oil box, and the baffle is located above the corresponding through groove, a push-pull plate is fixed on the upper surface of the inverted U-shaped plate, a limit block is fixed on the side of the oil box close to the inverted U-shaped plate, and a positioning column is movably inserted into the limit block and the upper surface of the push-pull plate.

[0009] Compared with the prior art, the beneficial effects of the present invention are:

[0010] 1. The utility model can conveniently provide lubricating oil to the ball through specially designed oil box, through groove, oil inlet groove and lubrication groove, effectively reducing the friction between the ball and various components, reducing wear, which is beneficial to extending the service life of the linear bearing and improving the reliability and stability of equipment operation. It is especially suitable for equipment that runs continuously for a long time or has high lubrication requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0012] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0013] Figure 2 This is an exploded view of the cross-sectional structure of the shell of the utility model.

[0014] Figure 3 This is an exploded view of the cross-sectional structure of the oil box of the utility model.

[0015] Figure 4 This is an exploded view of the cross-sectional structure of the retainer and shell of the utility model.

[0016] In the figure: 1. Housing; 11. Cage; 12. Ball; 121. Placement groove; 122. Rolling groove; 13. Side ring; 131. Annular groove; 14. Slide; 15. Strip groove; 2. Oil box; 21. Oil filling port; 22. Box cover; 23. Liquid storage cavity; 24. Through groove; 25. Oil inlet groove; 26. Lubrication groove; 27. Inverted U-shaped plate; 28. Baffle; 29. ​​Push-pull plate; 210. Limit block; 211. Positioning column; 3. Connector. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0018] Example: Figure 1-4 As shown, the utility model provides a lubricating and wear-resistant linear bearing, including a housing 1. The housing 1 serves as the external support structure of the entire linear bearing and plays an important role in protecting internal components and connecting with external equipment. Connectors 3 are symmetrically fixed on both sides of the outer surface of the housing 1. The connectors 3 can conveniently install the linear bearing on the corresponding mechanical equipment to ensure that it is in the correct position in the equipment and works stably. A retainer 11 is movably provided in the housing 1. Four slide bars 14 distributed in an annular shape are fixed on the outer surface of the retainer 11. A strip groove 15 used to cooperate with the slide bar 14 is opened in the housing 1. A plurality of balls 12 are provided in the retainer 11. The retainer 11 is provided with eight annular placement grooves 121, each of which is provided with several rolling grooves 122 for the balls 12. Side rings 13 are provided on both sides of the retainer 11, and annular grooves 131 are symmetrically provided within the housing 1 to cooperate with the side rings 13. When the shaft makes linear motion within the housing 1, it drives the balls 12 to roll in the rolling grooves 122 within the placement grooves 121 of the retainer 11. The retainer 11, through the sliding strips 14 on its outer surface, cooperates with the strip grooves 15 within the housing 1, allowing it to rotate or slide stably within the housing 1, ensuring the even distribution and smooth rolling of the balls 12, thus achieving low-friction linear motion of the shaft. The side rings 13 are fixed within the housing 1 via the annular grooves 131, limiting and guiding the balls 12, ensuring that the balls 12 roll within the predetermined track, thus maintaining the linear motion accuracy and stability of the linear bearing.

[0019] An oil box 2 is fixedly provided on the upper side of the outer surface of the housing 1, and a liquid storage cavity 23 is provided inside the oil box 2. A through groove 24 is symmetrically provided on the lower side of the liquid storage cavity 23. Two oil inlet grooves 25 are provided on the upper side of the outer surface of the housing 1 to cooperate with the through groove 24. A plurality of lubrication grooves 26 are provided on the outer surface of the retainer 11. There are eight lubrication grooves 26, and the lubrication grooves 26 are connected to the corresponding placement grooves 121. The lubricating oil is stored in the liquid storage cavity 23 of the oil box 2, and the lubricating oil flows into the housing 1 through the through groove 24 and the oil inlet groove 25. A lubrication groove 26 connected to the placement groove 121 is provided on the outer surface of the retaining frame 11. The lubricating oil will flow along the lubrication groove 26 into the rolling groove 122 in the placement groove 121, thereby lubricating the ball 12, reducing the friction between the ball 12 and the retaining frame 11 and the optical axis, effectively reducing the friction between the ball 12 and various components, reducing wear, which is beneficial to extending the service life of the linear bearing and improving the reliability and stability of the equipment operation. It is especially suitable for equipment that operates continuously for a long time or has high lubrication requirements.

[0020] like Figure 2-3 As shown, the upper surface of the oil box 2 is provided with a refueling port 21, and the upper end of the refueling port 21 is engaged with a box cover 22. The refueling port 21 facilitates the operation of adding lubricating oil, and the box cover 22 can effectively prevent dust, impurities and other foreign matter from entering the liquid storage chamber 23, ensuring the cleanliness of the lubricating oil, avoiding the influence of the lubrication effect and damage to the bearing components due to the mixing of impurities, an inverted U-shaped plate 27 is provided on one side of the oil box 2, and the inverted U-shaped plate 27 is symmetrically fixed with a baffle 28 on the side close to the oil box 2, one end of the baffle 28 passes through the oil box 2, and the baffle 28 is located above the corresponding through groove 24, and a push-pull plate 29 is fixed on the upper surface of the inverted U-shaped plate 27, and a limit block 210 is fixed on the side of the oil box 2 close to the inverted U-shaped plate 27, and the limit The block 210 and the upper surface of the push-pull plate 29 are movably inserted with a positioning column 211. When the inside of the bearing needs to be lubricated, the push-pull plate 29 is operated to drive the inverted U-shaped plate 27 to move so that the baffle 28 no longer blocks the through groove 24. At this time, the lubricating oil in the liquid storage chamber 23 flows into the through groove 24 under the action of gravity. When lubrication is not needed, the positioning column 211 is inserted into the push-pull plate 29 and the limit block 210. At this time, the baffle 28 completely blocks the through groove 24 to prevent excessive lubricating oil from entering the linear bearing. The supply of lubricating oil can be flexibly controlled according to actual needs, which can not only ensure sufficient lubrication during operation, but also avoid waste of lubricating oil, thereby reducing the maintenance cost and operating cost of the equipment to a certain extent.

[0021] Working Principle: When the shaft makes linear motion within the housing 1, it drives the balls 12 to roll in the rolling grooves 122 within the placement grooves 121 of the retainer 11. The retainer 11, through the sliding strips 14 on its outer surface, cooperates with the strip grooves 15 within the housing 1, allowing it to rotate stably or slide slightly within the housing 1, ensuring the even distribution and smooth rolling of the balls 12, thus achieving low-friction linear motion of the shaft. The side ring 13 is fixed within the housing 1 via the annular groove 131, which acts as a limiter and guide for the balls 12, ensuring that the balls 12 roll within the predetermined track, maintaining the linear motion accuracy and stability of the linear bearing.

[0022] The lubricating oil is stored in the liquid storage cavity 23 of the oil box 2, and the lubricating oil flows into the housing 1 through the through groove 24 and the oil inlet groove 25. Since the outer surface of the retaining frame 11 is provided with a lubricating groove 26 connected to the placement groove 121, the lubricating oil will flow along the lubricating groove 26 into the rolling groove 122 in the placement groove 121, thereby lubricating the ball 12, reducing the friction between the ball 12 and the retaining frame 11 and the optical axis, effectively reducing the friction between the ball 12 and various components, reducing wear, and being conducive to extending the service life of the linear bearing, improving the reliability and stability of the equipment operation, and is particularly suitable for equipment that operates continuously for a long time or has high lubrication requirements;

[0023] When lubrication is required inside the bearing, the push-pull plate 29 is operated to drive the inverted U-shaped plate 27 to move so that the baffle 28 no longer blocks the through groove 24. At this time, the lubricating oil in the liquid storage chamber 23 flows into the through groove 24 under the action of gravity. When lubrication is not required, the positioning column 211 is inserted into the push-pull plate 29 and the limit block 210. At this time, the baffle 28 completely blocks the through groove 24 to prevent excessive lubricating oil from entering the linear bearing. The supply of lubricating oil can be flexibly controlled according to actual needs, which can not only ensure sufficient lubrication during operation, but also avoid waste of lubricating oil, thereby reducing the maintenance cost and operating cost of the equipment to a certain extent.

[0024] Obviously, those skilled in the art may make various modifications and variations to the present invention without departing from the spirit and scope of the present invention. Thus, if such modifications and variations fall within the scope of the claims of the present invention and their equivalents, the present invention is intended to include such modifications and variations.

Claims

1. A lubricated wear-resistant linear bearing, comprising a housing (1), characterized in that: A retainer (11) is movably provided in the housing (1), and a plurality of balls (12) are provided in the retainer (11); an oil box (2) is fixedly provided on the upper side of the outer surface of the housing (1), and a liquid storage cavity (23) is provided inside the oil box (2); a through groove (24) is symmetrically provided on the lower side of the liquid storage cavity (23); two oil inlet grooves (25) used in conjunction with the through groove (24) are provided on the upper side of the outer surface of the housing (1); and a plurality of lubrication grooves (26) are provided on the outer surface of the retainer (11).

2. A lubricated wear-resistant linear bearing according to claim 1, characterized in that: An inverted U-shaped plate (27) is provided on one side of the oil box (2), and a baffle (28) is symmetrically fixedly provided on the side of the inverted U-shaped plate (27) close to the oil box (2), one end of the baffle (28) passes through the oil box (2), and the baffle (28) is located above the corresponding through slot (24). A push-pull plate (29) is fixedly provided on the upper surface of the inverted U-shaped plate (27), and a limit block (210) is fixedly provided on the side of the oil box (2) close to the inverted U-shaped plate (27), and a positioning column (211) is movably inserted into the upper surface of the limit block (210) and the push-pull plate (29).

3. The lubricated wear-resistant linear bearing according to claim 1, characterized in that: The retaining frame (11) is provided with eight placement grooves (121) distributed in an annular shape, and the placement grooves (121) are provided with a plurality of rolling grooves (122) used in conjunction with the balls (12).

4. A lubricated wear-resistant linear bearing according to claim 3, characterized in that: There are eight lubrication grooves (26), and the lubrication grooves (26) are communicated with the corresponding placement grooves (121).

5. The lubricating and wear-resistant linear bearing according to claim 1, characterized in that: Four slide bars (14) distributed in an annular shape are fixedly provided on the outer surface of the retaining frame (11), and strip grooves (15) used in conjunction with the slide bars (14) are provided in the housing (1).

6. The lubricated wear-resistant linear bearing according to claim 1, characterized in that: The upper surface of the oil box (2) is provided with a refueling port (21), and the upper end of the refueling port (21) is engaged with a box cover (22).

7. The lubricated wear-resistant linear bearing according to claim 1, characterized in that: Connecting pieces (3) are symmetrically fixed on both sides of the outer surface of the housing (1).

8. The lubricated wear-resistant linear bearing according to claim 1, characterized in that: Side rings (13) are provided on both sides of the retaining frame (11), and annular grooves (131) used in conjunction with the side rings (13) are symmetrically provided in the housing (1).

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