Maintenance-free double-row deep groove ball bearing

Abstract

The utility model discloses a maintenance-free double-row deep groove ball bearing which comprises a shaft sealing ring, a waterproof sealing ring, a wear-resistant sheet, a bearing wheel body, a bearing wheel hollow shaft, a bearing outer ring, a bearing inner ring, a first groove and a second groove, the bearing wheel hollow shaft is sleeved with a bearing wheel body, a maintenance-free double-row deep groove bearing is installed in the bearing wheel body, and the maintenance-free double-row deep groove bearing is fixedly connected to the bearing wheel hollow shaft. According to the maintenance-free double-row deep groove ball bearing, structural design is designed, dynamic and static dual protection is achieved through the collaborative design of the multiple layers of sealing pieces and the double rows of balls, the gap between the inner ring and the outer ring can be covered through the linkage design of the bearing pressing pieces and the multiple layers of sealing pieces, load distribution is optimized through the double rows of symmetrically-distributed balls, and the service life of the ball bearing is prolonged. The radial bearing capacity and the axial bearing capacity are remarkably improved, local stress concentration caused by deviation of a single-row bearing is avoided, and the bearing capacity and stability of the bearing are remarkably improved through symmetrical layout and geometric optimization of the double-row balls.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of ball bearing, especially to maintenance -free double -row deep groove ball bearing. BACKGROUND

[0002] Ball bearing is a kind of precision mechanical element that converts sliding friction into rolling friction, and it reduces energy loss and improves transmission efficiency through the movement of rolling body, in the current bearing technology, the traditional design still has significant defects, one is that the sealing performance is insufficient, and maintenance is complex, and traditional bearing adopts single-layer sealing, such as rubber or labyrinth sealing, and its waterproof and dustproof capacity is limited, especially in harsh environment, it performs worse, single-layer sealing cannot block the invasion of small particles, leading to the pollution of the surface of rolling body, increasing the friction coefficient, affecting the transmission efficiency and reducing the service life, two is that the structure is single, and the bearing capacity is insufficient, and the traditional design is single-row ball design, and the single-row ball bearing has weak axial bearing capacity and poor impact resistance, and it cannot adapt to high-load scenarios such as engineering machinery, and the contact area of ball and raceway is small, and local stress concentration is easy to occur. SUMMARY

[0003] The utility model aims at providing maintenance -free double -row deep groove ball bearing to solve the problems in the above background technology.

[0004] In order to solve the above technical problems, the utility model provides the following technical scheme: maintenance -free double -row deep groove ball bearing, including maintenance -free double -row deep groove ball bearing, the hollow shaft of the load wheel is sleeved with load wheel body, the maintenance -free double -row deep groove bearing is arranged in load wheel body, and is fixedly connected on the hollow shaft of load wheel.

[0005] As a further technical scheme of the utility model, the wear-resistant sheet is arranged on the outer wall of one side of the maintenance -free double -row deep groove bearing.

[0006] As a further technical scheme of the utility model, the load wheel side cover is arranged at both ends of the hollow shaft of load wheel, and the elastic positioning pin is arranged on both ends of the hollow shaft of load wheel, and the load wheel side cover is fixedly connected to the hollow shaft of load wheel through the elastic positioning pin.

[0007] As a further technical scheme of the utility model, the shaft sealing ring is arranged on the outer wall of one side of the load wheel side cover, the second groove is formed in the position corresponding to the shaft sealing ring on the hollow shaft of load wheel, and the shaft sealing ring is sleeved in the second groove.

[0008] As a further technical scheme of the utility model, the first groove is formed in the outer wall of one side of the load wheel side cover, and the waterproof sealing ring is sleeved in the first groove.

[0009] As a further technical scheme of the utility model, the upper and lower sides of the maintenance-free double-row deep groove bearing are respectively provided with a bearing outer ring and a bearing inner ring, and the double-row ball is connected in rolling on the bearing inner ring.

[0010] As a further technical scheme of the utility model, the two side outer walls of the bearing outer ring and the bearing inner ring are both provided with a bearing pressing sheet, and the inner wall of the bearing pressing sheet is provided with a plurality of sealing sheets.

[0011] Compared with the prior art, the utility model has the beneficial effects that: the utility model has a structural design, and the maintenance-free double-row deep groove ball bearing is designed in cooperation with the double-row ball through the plurality of sealing sheets, realizes double protection in static and dynamic states, the linkage design of the bearing pressing sheet and the plurality of sealing sheets can cover the gap between the inner and outer rings, in combination with the waterproof sealing ring, greatly reduces the pollution invasion rate, significantly prolongs the service life of the bearing in the mud and high humidity environment, the symmetrical distribution of the double-row ball optimizes the load distribution, significantly improves the radial bearing capacity and the axial bearing capacity, avoids the local stress concentration of the single-row bearing due to the deviation, and the symmetrical layout and geometric optimization of the double-row ball significantly improve the bearing capacity and stability of the bearing. BRIEF DESCRIPTION OF DRAWINGS

[0012] In order to more clearly illustrate the technical schemes in the embodiments of the utility model or the prior art, the drawings needed to be used in the embodiments or the prior art description will be briefly introduced below, and obviously, the drawings in the following description are some embodiments of the utility model, and those skilled in the art can also obtain other drawings according to these drawings without creating labor.

[0013] Figure 1 It is a sectional structure schematic view of the utility model;

[0014] Figure 2 It is Figure 1 It is an enlarged structure schematic view of the A area in the middle;

[0015] Figure 3 It is Figure 1 It is an enlarged structure schematic view of the B area in the middle;

[0016] Figure 4 It is a sectional structure schematic view of the deep groove bearing of the utility model.

[0017] In the drawing: 1, shaft sealing ring; 2, waterproof sealing ring; 3, wear-resistant sheet; 4, bearing pressing sheet; 5, a plurality of sealing sheets; 6, double-row ball; 7, elastic positioning pin; 8, load wheel body; 9, load wheel side cover; 10, load wheel hollow shaft; 11, bearing outer ring; 12, bearing inner ring; 13, maintenance-free double-row deep groove bearing; 14, first groove; 15, second groove. DETAILED DESCRIPTION

[0018] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described in the following with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the ordinary skilled in the art without creative labor belong to the scope of protection of the utility model.

[0019] Please refer to the drawings Figure 1 - the drawings Figure 4 An embodiment provided by the utility model: maintenance-free double-row deep groove ball bearing, including the load wheel hollow shaft 10, the load wheel hollow shaft 10 is sleeved with the load wheel body 8, the load wheel body 8 is installed with maintenance-free double-row deep groove bearing 13, and the maintenance-free double-row deep groove bearing 13 is fixedly connected on the load wheel hollow shaft 10;The outer wall of one side of maintenance-free double-row deep groove bearing 13 is provided with wear-resistant sheet 3, and wear-resistant sheet 3 directly slides and rubs with waterproof sealing ring 2 by physical isolation of the outer ring of maintenance-free double-row deep groove bearing 13;The both ends of load wheel hollow shaft 10 are provided with load wheel side cover 9, and the both ends of load wheel hollow shaft 10 are provided with elastic positioning pin 7, and load wheel side cover 9 is fixedly connected on load wheel hollow shaft 10 through elastic positioning pin 7, and elastic positioning pin 7 makes load wheel side cover 9 and load wheel hollow shaft 10 realize accurate positioning and stable fixation;The outer wall of one side of load wheel side cover 9 is provided with shaft sealing ring 1, the position corresponding to shaft sealing ring 1 of load wheel hollow shaft 10 is provided with second groove 15, and shaft sealing ring 1 is sleeved in second groove 15, effectively preventing dust, moisture and other external pollutants from entering the inside of the equipment;The outer wall of one side of load wheel side cover 9 is provided with first groove 14, and waterproof sealing ring 2 is sleeved in first groove 14, and water, mud, chemical medium and the like are prevented from entering the inside of maintenance-free double-row deep groove bearing 13 by physical barrier;The upper and lower sides of maintenance-free double-row deep groove bearing 13 are respectively provided with bearing outer ring 11 and bearing inner ring 12, and double-row ball 6 is rollingly connected on bearing inner ring 12, and double-row ball 6 disperses radial and axial load, and the structure is stable;The outer walls of the both sides of bearing outer ring 11 and bearing inner ring 12 are provided with bearing pressing sheet 4, and the inner wall of bearing pressing sheet 4 is provided with multilayer sealing sheet 5, effectively preventing lubricating liquid in the bearing from leaking and preventing external pollutants from invading.

[0020] Working principle: use the utility model, first, the load wheel wheel body 8 is sleeved on the load wheel hollow shaft 10, then the maintenance-free double-row deep groove bearing 13 is installed in the load wheel wheel body 8, and the maintenance-free double-row deep groove bearing 13 needs to be fixedly connected on the load wheel hollow shaft 10, the wear-resistant sheet 3 arranged on the one side outer wall of the maintenance-free double-row deep groove bearing 13, through the physical isolation of the outer ring of the maintenance-free double-row deep groove bearing 13 and the direct sliding friction of external parts, the load wheel side cover 9 is fixedly connected on both ends of the load wheel hollow shaft 10 through the elastic positioning pin 7 arranged on both ends of the load wheel hollow shaft 10, the shaft sealing ring 1 arranged on the one side outer wall of the load wheel side cover 9 can prevent the external pollutants from entering the inside of the equipment, and the shaft sealing ring 1 is sleeved in the second groove 15, the waterproof sealing ring 2 is sleeved on the one side outer wall of the load wheel side cover 9 and is arranged in the first groove 14, the upper and lower sides of the maintenance-free double-row deep groove bearing 13 are respectively provided with the bearing outer ring 11 and the bearing inner ring 12, and the double-row ball 6 is rollingly connected on the bearing inner ring 12, the bearing outer ring 11 and the bearing inner ring 12 are both provided with the bearing pressing sheet 4 on the two side outer walls, the inner wall of the bearing pressing sheet 4 is provided with the multilayer sealing sheet 5, the assembly of the utility model is completed, the shaft sealing ring 1, the waterproof sealing ring 2 and the multilayer sealing sheet 5 multiple sealing structures arranged in the equipment, through the hierarchical protection mechanism, in combination with the contact type and the non-contact type sealing technology, the protection of the bearing internal lubricant and the blocking of the external pollutants are realized, the double-row ball 6 arranged in the maintenance-free double-row deep groove bearing 13 greatly improves the bearing capacity and stability of the bearing through the symmetrical layout and the mechanical optimization, through the dynamic and static sealing hierarchy, the load optimization distribution, so that the equipment realizes the high protection, the long service life and the maintenance-free requirement.

[0021] In the description of the utility model, it is to be explained that, unless another explicit stipulation and limitation, the term "installation", "connection", "connect" should be broad sense understanding, for example, can be fixed connection, also can be detachable connection, or integrally connected, can be mechanical connection, also can be electrical connection, can be directly connected, also can be indirectly connected through the intermediate medium, can be the intercommunication of two elements. For ordinary skilled in the art, the specific meaning of the above-mentioned terms in the utility model can be understood according to the specific circumstances.

[0022] The device embodiments described above are only schematic, wherein the units described as separate components may or may not be physically separate, and the components shown as units may or may not be physical units, i.e., may be located in one place, or may be distributed on a plurality of network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the embodiment. Those skilled in the art can understand and implement without creative labor.

[0023] It should be finally pointed out that: the above examples are only used to illustrate the technical solutions of the utility model, and not to limit them; although the utility model has been explained in detail with reference to the foregoing examples, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing examples, or make equivalent replacement to part of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the utility model.

Claims

1. A maintenance-free double-row deep-groove ball bearing, comprising a load wheel hollow shaft (10), characterized in that: The load wheel hollow shaft (10) is sleeved with a load wheel body (8), the load wheel body (8) is provided with a maintenance-free double-row deep groove bearing (13), and the maintenance-free double-row deep groove bearing (13) is fixedly connected to the load wheel hollow shaft (10).

2. The maintenance-free double-row deep groove ball bearing of claim 1, wherein: The maintenance-free double-row deep groove bearing (13) is provided with a wear-resistant sheet (3) on one side of the outer wall.

3. The maintenance-free double-row deep groove ball bearing of claim 1, wherein: Both ends of the load wheel hollow shaft (10) are provided with load wheel side covers (9), and the two ends of the load wheel hollow shaft (10) are provided with elastic positioning pins (7), and the load wheel side covers (9) are fixedly connected to the load wheel hollow shaft (10) through the elastic positioning pins (7).

4. The maintenance-free double-row deep groove ball bearing of claim 3, wherein: The load wheel side cover (9) is provided with a shaft sealing ring (1) on one side of the outer wall, and the load wheel hollow shaft (10) is provided with a second groove (15) corresponding to the shaft sealing ring (1), and the shaft sealing ring (1) is sleeved in the second groove (15).

5. The maintenance-free double-row deep groove ball bearing of claim 4, wherein: The load wheel side cover (9) is provided with a first groove (14) on one side of the outer wall, and the first groove (14) is sleeved with a waterproof sealing ring (2).

6. The maintenance-free double-row deep groove ball bearing of claim 2, wherein: The maintenance-free double-row deep groove bearing (13) is provided with a bearing outer ring (11) and a bearing inner ring (12) on the upper and lower sides, respectively, and the double-row ball (6) is rollingly connected to the bearing inner ring (12).

7. The maintenance-free double-row deep groove ball bearing of claim 6, wherein: The bearing outer ring (11) and the bearing inner ring (12) are provided with bearing pressing sheets (4) on the outer walls of the two sides, and the inner wall of the bearing pressing sheet (4) is provided with a plurality of sealing sheets (5).

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