A double row ball bearing

Abstract

The utility model discloses a double-row ball bearing, which relates to the field of bearings and comprises a bearing inner ring, wherein the outer side of the bearing inner ring is movably mounted with a bearing outer ring, an embedded annular groove is provided in the middle of the outer side of the bearing inner ring, and a plurality of first ball grooves are provided above the embedded annular groove, a sealing gasket can protect the bottom end and the top end of the gap between the bearing inner ring and the bearing outer ring, and can reduce the entry of external dust into the gap, and avoid dust adhering to the first ball and the second ball to cause the rotation to be blocked, and at the same time, by providing a through hole, when lubrication is needed, the lubricating oil can enter the gap through the through hole, and by the rolling of the first ball and the second ball, the lubricating oil can be evenly applied to the contact surface on the inner side of the bearing outer ring, and due to the blocking of the sealing gasket, most of the lubricating oil can be kept in the gap, and will not drip to the outside to cause waste.

Description

Technical Field

[0001] The utility model relates to the field of bearings, in particular to a double-row ball bearing. Background Art

[0002] Bearings are an important component in modern mechanical equipment. Its main function is to support the mechanical rotating body, reduce the friction coefficient during its movement, and ensure its rotation accuracy. Bearings are supporting parts in mechanical transmission mechanisms, used to determine the relative movement position of the rotating shaft and other parts. Its quality directly affects the working performance of the entire machine, and the movement of related mechanisms is driven by the operation of the bearings.

[0003] The existing ball bearings rotate the balls to make the outer ring and the inner ring rotate relative to each other. When lubrication is needed, since the gap between the outer ring and the inner ring is connected vertically, the lubricating oil will flow out directly from the gap, causing waste and leading to insufficient lubrication.

[0004] Therefore, it is necessary to propose a double-row ball bearing to solve the above problems. Utility Model Content

[0005] The utility model aims to provide a double-row ball bearing to solve the problem that in the existing ball bearing, the outer ring and the inner ring of the bearing rotate relative to each other through the rotation of the balls, and when lubrication is required, the lubricating oil will directly flow out from the gap because the gap between the outer ring and the inner ring of the bearing is connected vertically, causing waste and leading to the phenomenon of insufficient partial lubrication.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a double-row ball bearing, comprising a bearing inner ring, a bearing outer ring is movably mounted on the outer side of the bearing inner ring, an embedded annular groove is provided in the middle of the outer side of the bearing inner ring, a plurality of first ball grooves are provided above the embedded annular groove, a plurality of second ball grooves are provided below the embedded annular groove, the first ball grooves and the second ball grooves are both provided on the outer side of the bearing inner ring, and the first ball grooves and the second ball grooves are staggered up and down, first balls and second balls are movably mounted inside the plurality of first ball grooves and the plurality of second ball grooves, respectively, and the inner side of the bearing outer ring is movably fitted with the first balls and the second balls.

[0007] Preferably, a plurality of through holes are formed on the inner side of the bearing inner ring, and one end of each of the plurality of through holes is connected to the embedded annular groove.

[0008] Preferably, sealing gaskets are provided at the top and bottom ends between the bearing inner ring and the bearing outer ring, and the sealing gaskets are fixed to the top of the bearing inner ring.

[0009] Preferably, the top end of the first ball is lower than the top end of the bearing inner ring, the bottom end of the second ball is higher than the bottom end of the bearing inner ring, and the height of the bearing inner ring is consistent with the height of the bearing outer ring.

[0010] Preferably, the plurality of first ball grooves and the plurality of second ball grooves are distributed at equal distances around the center of the inner ring of the bearing, and the spacing between any two first balls and any two second balls is consistent.

[0011] Preferably, the plurality of through holes are distributed equidistantly around the center of the bearing inner ring.

[0012] Technical effects and advantages of the utility model:

[0013] 1. The sealing gasket can protect the bottom and top of the gap between the inner ring and the outer ring of the bearing, reduce the entry of external dust into the gap, and prevent dust from adhering to the first ball and the second ball, causing the rotation to be blocked. At the same time, by providing a through hole, when lubrication is required, the lubricating oil can enter the gap through the through hole, and through the rolling of the first ball and the second ball, the lubricating oil can be evenly applied to the contact surface on the inner side of the outer ring of the bearing. Due to the obstruction of the sealing gasket, most of the lubricating oil can stay in the gap and will not drip to the outside to cause waste;

[0014] 2. In the actual operation of the present invention, the first ball and the second ball are distributed in two upper and lower rows, and the first ball and the second ball are staggered up and down, so that the first ball and the second ball can be more evenly distributed on the outer side of the inner ring of the bearing. Compared with two rows of balls distributed vertically, the force is more uniform and the rotation is smoother. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural schematic diagram of the double-row ball bearing of the utility model.

[0016] Figure 2 It is a structural schematic diagram of the through hole of the utility model.

[0017] Figure 3 It is a structural schematic diagram of the embedded ring groove and the second ball groove of the utility model.

[0018] In the figure: 1. outer ring of bearing; 2. inner ring of bearing; 3. sealing gasket; 4. through hole; 5. first ball groove; 6. first ball; 7. embedded ring groove; 8. second ball groove; 9. second ball. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the utility model to clarify the technical solutions in the embodiments of the utility model; it is completely described. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of them. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0020] The utility model provides Figure 1 - Figure 3 A double-row ball bearing shown includes a bearing inner ring 2, an outer side of which is movably mounted a bearing outer ring 1, and the bearing inner ring 2 and the bearing outer ring 1 can rotate relative to each other.

[0021] Specifically, an embedded annular groove 7 is opened in the middle of the outer side of the bearing inner ring 2, a plurality of first ball grooves 5 are arranged above the embedded annular groove 7, and a plurality of second ball grooves 8 are opened below the embedded annular groove 7. The first ball grooves 5 and the second ball grooves 8 are both opened on the outer side of the bearing inner ring 2, and the first ball grooves 5 and the second ball grooves 8 are staggered up and down, and the first balls 6 and the second balls 9 are movably installed inside the plurality of first ball grooves 5 and the plurality of second ball grooves 8, respectively, and the inner side of the bearing outer ring 1 is movably fitted with the first balls 6 and the second balls 9.

[0022] In the actual operation of the present invention, the first ball 6 and the second ball 9 are distributed in two upper and lower rows, and the first ball 6 and the second ball 9 are staggered up and down, so that the first ball 6 and the second ball 9 can be more evenly distributed on the outside of the bearing inner ring 2. Compared with two rows of balls distributed vertically, the force is more uniform and the rotation is smoother.

[0023] A plurality of through holes 4 are provided on the inner side of the bearing inner ring 2, one end of each of the through holes 4 is connected to the embedded annular groove 7, and sealing gaskets 3 are provided at the top and bottom ends between the bearing inner ring 2 and the bearing outer ring 1, and the sealing gaskets 3 are fixed to the top of the bearing inner ring 2.

[0024] The sealing gasket 3 can protect the bottom and top of the gap between the bearing inner ring 2 and the bearing outer ring 1, reduce the entry of external dust into the gap, and prevent dust from adhering to the first ball 6 and the second ball 9, causing rotation obstruction. At the same time, by providing a through hole 4, when lubrication is required, the lubricating oil can enter the gap through the through hole 4, and through the rolling of the first ball 6 and the second ball 9, the lubricating oil can be evenly applied to the contact surface on the inner side of the bearing outer ring 1. Due to the obstruction of the sealing gasket 3, most of the lubricating oil can stay in the gap and will not drip to the outside to cause waste.

[0025] The top of the first ball 6 is lower than the top of the bearing inner ring 2 , the bottom of the second ball 9 is higher than the bottom of the bearing inner ring 2 , and the height of the bearing inner ring 2 is consistent with the height of the bearing outer ring 1 .

[0026] Multiple first ball grooves 5 and multiple second ball grooves 8 are equidistantly distributed around the center of the bearing inner ring 2, and the spacing between each pair of first balls 6 and each pair of second balls 9 is consistent. Multiple through holes 4 are equidistantly distributed around the center of the bearing inner ring 2 to maintain consistent distances and improve stability.

Claims

1. A double-row ball bearing, comprising a bearing inner ring (2), characterized in that: The outer side of the bearing inner ring (2) is movably mounted with a bearing outer ring (1); an inner ring groove (7) is provided in the middle of the outer side of the bearing inner ring (2); a plurality of first ball grooves (5) are provided above the inner ring groove (7); a plurality of second ball grooves (8) are provided below the inner ring groove (7); the first ball grooves (5) and the second ball grooves (8) are both provided on the outer side of the bearing inner ring (2); the first ball grooves (5) and the second ball grooves (8) are staggered up and down; first balls (6) and second balls (9) are movably mounted inside the plurality of first ball grooves (5) and the plurality of second ball grooves (8); and the inner side of the bearing outer ring (1) is movably fitted with the first balls (6) and the second balls (9).

2. A double row ball bearing according to claim 1, characterized in that: A plurality of through holes (4) are provided on the inner side of the bearing inner ring (2), and one end of each of the plurality of through holes (4) is connected to the embedded annular groove (7).

3. A double row ball bearing according to claim 1, characterized in that: A sealing gasket (3) is provided at the top and bottom ends between the bearing inner ring (2) and the bearing outer ring (1), and the sealing gasket (3) is fixed to the top of the bearing inner ring (2).

4. A double-row ball bearing according to claim 1, characterized in that: The top end of the first rolling ball (6) is lower than the top end of the bearing inner ring (2), the bottom end of the second rolling ball (9) is higher than the bottom end of the bearing inner ring (2), and the height of the bearing inner ring (2) is consistent with the height of the bearing outer ring (1).

5. A double row ball bearing according to claim 1, characterized in that: The plurality of first ball grooves (5) and the plurality of second ball grooves (8) are all distributed at equal distances around the center of the bearing inner ring (2), and the spacing between any two first rolling balls (6) and any two second rolling balls (9) is consistent.

6. A double row ball bearing according to claim 2, characterized in that: A plurality of through holes (4) are distributed at equal distances around the center of the bearing inner ring (2).

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