Long-life ball bearing

Abstract

The utility model discloses a ball bearing with long service life, which relates to the field of ball bearings, and adopts the technical scheme that the ball bearing comprises an outer ring and a retainer, the retainer comprises two frames, a plurality of positioning arms are arranged on the frames, positioning grooves for allowing the positioning arms to be embedded are formed in the outer ring, and an oil storage cavity is formed in the outer ring; an oil injection hole communicated with the oil storage cavity is formed in the positioning groove, and a sealing block used for sealing the oil injection hole is detachably connected to the positioning arm. Due to the fact that the sealing blocks are detachably connected with the positioning arms, the sealing blocks are no longer independent small parts but one part of the whole retainer, the risk that the sealing blocks are misplaced or lost is reduced, GCr15 steel has high hardness, high abrasion resistance and high heat resistance, and therefore the structural strength of the outer ring, the inner ring, the balls and the retainer is effectively guaranteed, and the service life of the retainer is prolonged. And the ball bearing has a relatively long service life.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of ball bearing, more specifically, it relates to a long life ball bearing. BACKGROUND

[0002] Ball bearing is a kind of mechanical parts using the rolling of ball to reduce friction and support rotating shaft. It reduces friction resistance by rolling friction to realize the purpose of transmission and support shaft, ball bearing is usually composed of inner ring, outer ring, ball and retainer, ball is usually arranged in the hole of retainer, as friction frequently occurs between ball and retainer, oil liquid needs to be injected for lubrication, and the operator can set up oil storage cavity on the outer ring to carry out oil storage operation, in order to avoid oil waste, the operator sets a sealing cover on the oil injection hole to seal, as the oil injection hole is small, the size of the sealing cover is relatively small, when the operator dismounts the sealing cover, the small sealing cover is easy to be misplaced, lost or dropped in difficult-to-find place when oil injection operation is carried out after dismounting.

[0003] Therefore, a new scheme needs to be proposed to solve this problem. CONTENT OF UTILITY MODEL

[0004] In view of the deficiencies in the prior art, the purpose of the utility model is to provide a long life ball bearing.

[0005] The above technical purpose of the utility model is realized by the following technical scheme: a long life ball bearing, comprising an outer ring and a retainer, the retainer comprises two frames, a plurality of positioning arms are arranged on the frame, a positioning groove for accommodating the positioning arm is formed on the outer ring, an oil storage cavity is formed on the outer ring, an oil injection hole communicating with the oil storage cavity is formed on the positioning groove, and a sealing block for sealing the oil injection hole is detachably connected to the positioning arm.

[0006] The utility model is further provided as follows: the sealing block comprises a limiting block and an embedded block, a limiting groove for accommodating the limiting block is formed on the positioning arm, and the embedded block is spherical and has a diameter greater than that of the oil injection hole.

[0007] The utility model is further provided as follows: the sealing block has elastic recovery characteristics.

[0008] The utility model is further provided as follows: the sealing block is made of rubber material.

[0009] The utility model is further provided as follows: a through groove communicating with the limiting groove is formed on the positioning arm, a baffle is rotatably connected to the inner wall of the through groove, and the baffle and the inner wall of the through groove are fixed by a positioning piece.

[0010] The utility model further sets up: the positioning piece is locating block, locating block is equipped with two, two locating block symmetry sets up at the both sides of baffle, the inner wall of through groove is equipped with the embedding slot for accommodating locating block embedding.

[0011] The utility model further sets up: locating arm is equipped with three, three locating arm circumferential array sets up on frame.

[0012] The utility model further sets up: the outer ring and holder are all made of GCr15 steel.

[0013] In conclusion, the utility model has following beneficial effect: because sealing block and locating arm detachable connection, make sealing block no longer an independent small part, but the part of holder whole, reduced the risk of sealing block being mislaid or lost, when operating personnel is in assembling bearing, first frame is installed to the one side of outer ring, the oil hole of its on sealing block is blocked one side, because sealing block is spherical, make its embedding in oil hole after, will receive the resistance of oil hole, make frame and outer ring fixed, immediately operating personnel carries out oil operation, after oil injection is completed, again frame is installed to the other side of outer ring, through sealing block again the oil hole of other side is blocked, at this time, complete oil injection operation after, operating personnel again two frame is fixed, because the locating arm of two frame is embedded in the locating groove, and the locating arm can play the role of pre-fixing, make operating personnel more efficient when fixing two frame convenient, save assembly time. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is the structure schematic view of the utility model;

[0015] Figure 2 It is the partial sectional view of the utility model;

[0016] Figure 3 It is Figure 2 The enlarged schematic view of A part in the middle.

[0017] In the drawing: 1, holder;2, frame;3, outer ring;4, locating arm;5, locating groove;6, oil hole;7, sealing block;8, limiting block;9, embedding block;10, limiting groove;11, through slot;12, baffle;13, locating block;14, embedding slot. DETAILED DESCRIPTION

[0018] The utility model is described in detail below in combination with the drawings and examples. Example

[0019] A long-life ball bearing, such as Figure 1 And Figure 2As shown, including the outer ring 3, inner ring, ball and cage 1, specifically, the outer ring 3, inner ring, ball and cage 1 are made of GCr15 steel, GCr15 steel has high hardness, high wear resistance and high heat resistance, thereby effectively guarantee the structural strength of the outer ring 3, inner ring, ball and cage 1, so that the ball bearing has a longer service life.

[0020] As shown in Figure 2 and Figure 3 The cage 1 includes two frames 2, a plurality of holes are formed on the two frames 2, the two frames 2 are fixed by the mounting nails passing through the holes, each frame 2 is provided with three positioning arms 4 and the three positioning arms 4 are circumferentially arranged on the frame 2, the outer ring 3 is provided with a positioning groove 5 for accommodating the positioning arms 4, by setting three positioning arms 4, the uniform support of the cage 1 in the outer ring 3 is ensured, so that the ball bearing is more stable during operation, at the same time, the plurality of positioning arms 4 can increase the structural strength of the cage 1 as a whole, so that it can withstand greater load and impact force, further, the cooperation design of the positioning groove 5 and the positioning arm 4 makes it more simple and convenient for the operator to install the cage 1, saving the installation time.

[0021] As shown in Figure 2 and Figure 3 The outer ring 3 is provided with an oil storage cavity, the positioning groove 5 is provided with an oil injection hole 6 communicating with the oil storage cavity, and the positioning arm 4 is detachably connected with a sealing block 7 for sealing the oil injection hole 6, the sealing block 7 has elastic recovery characteristics, specifically, the sealing block 7 is made of rubber material, by setting the oil injection hole 6 and the oil storage cavity, the oil storage cavity provides storage space for lubricating oil, ensuring that the bearing always has enough lubricating oil supply during operation, reducing the need for frequent oil injection, the oil injection hole 6 enables the lubricating oil to easily enter the oil storage cavity through the oil injection hole 6, providing continuous lubrication for the bearing, at the same time, the rubber sealing block 7 has elastic recovery characteristics, which can tightly fit on the oil injection hole 6 to form an effective seal, preventing lubricating oil leakage and impurities from entering, and the rubber sealing block 7 has good oil resistance and corrosion resistance, which can maintain stable sealing performance for a long time in harsh working environment, thereby prolonging the service life of the bearing.

[0022] Specifically, as shown in Figure 2 and Figure 3 The sealing block 7 includes a limiting block 8 and an embedded block 9, the positioning arm 4 is provided with a limiting groove 10 for accommodating the limiting block 8, the embedded block 9 is spherical and the diameter of the embedded block 9 is greater than that of the oil injection hole 6, since the limiting block 8 is embedded in the limiting groove 10 of the positioning arm 4, it is ensured that the sealing block 7 will not fall off or shift during disassembly and installation, while the embedded block 9 is spherical and the diameter is greater than that of the oil injection hole 6, which enables the embedded block 9 to tightly plug the oil injection hole 6 in the sealed state, improving the sealing effect.

[0023] Further, as shown in Figure 2 and Figure 3 The positioning arm 4 is provided with a through groove 11 communicating with the limiting groove 10, the inner wall of the through groove 11 is rotatably connected with a baffle 12, the baffle 12 and the inner wall of the through groove 11 are fixed by a positioning member, specifically, the positioning member is a positioning block 13, two positioning blocks 13 are symmetrically arranged on both sides of the baffle 12, the inner wall of the through groove 11 is provided with an embedding groove 14 for accommodating the positioning block 13, since the baffle 12 is rotatably connected with the inner wall of the positioning arm 4 through the through groove 11, the operator can conveniently open or close the through groove 11, thereby easily dismounting and mounting the sealing block 7, the design of the positioning block 13 ensures the stable position of the baffle 12, when the baffle 12 is closed, the through groove 11 can be tightly sealed to prevent impurities from entering, and the positioning block 13 is matched with the embedding groove 14 on the inner wall of the through groove 11, so that the baffle 12 can be accurately positioned when rotating and fixing, thereby ensuring the accuracy and reliability of the sealing block 7 after replacement, and prolonging the service life of the bearing.

[0024] The above only describes the preferred embodiments of the present application, the protection scope of the present application is not limited to the above-mentioned embodiments, any technical scheme falling within the concept of the present application belongs to the protection scope of the present application. It should be noted that for ordinary skilled in the art, some improvements and decorations without departing from the principles of the present application, these improvements and decorations should also be considered as the protection scope of the present application.

Claims

1. A long-life ball bearing comprising an outer ring (3) and a cage (1), characterized in that: The cage (1) comprises two frames (2) provided with a plurality of positioning arms (4), the outer ring (3) is provided with positioning grooves (5) for accommodating the positioning arms (4), the outer ring (3) is provided with an oil storage cavity, the positioning grooves (5) are provided with oil injection holes (6) communicating with the oil storage cavity, and the positioning arms (4) are detachably connected with sealing blocks (7) for sealing the oil injection holes (6).

2. The long-life ball bearing of claim 1, wherein: The sealing block (7) comprises a limiting block (8) and an embedded block (9), the positioning arm (4) is provided with a limiting groove (10) for accommodating the limiting block (8), the embedded block (9) is provided in a spherical shape and has a diameter larger than that of the oil injection hole (6).

3. The long-life ball bearing of claim 2, wherein: The sealing block (7) has elastic recovery characteristics.

4. The long-life ball bearing of claim 3, wherein: The sealing block (7) is made of rubber material.

5. The long-life ball bearing of claim 3, wherein: The positioning arm (4) is provided with a through groove (11) communicating with the limiting groove (10), the inner wall of the through groove (11) is rotatably connected with a baffle (12), and the baffle (12) and the inner wall of the through groove (11) are fixed by a positioning piece.

6. The long-life ball bearing of claim 5, wherein: The positioning piece is a positioning block (13), two positioning blocks (13) are symmetrically arranged on both sides of the baffle (12), and the inner wall of the through groove (11) is provided with an embedded groove (14) for accommodating the positioning block (13).

7. The long-life ball bearing of claim 1, wherein: The positioning arm (4) is provided with three positioning arms (4) arranged in a circular array on the frame (2).

8. The long-life ball bearing of claim 1, wherein: The outer ring (3) and the cage (1) are made of GCr15 steel.

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