Novel multi-layer labyrinth type bearing protector

Abstract

The utility model discloses a novel multi-layer labyrinth type bearing protector. The novel multi-layer labyrinth type bearing protector comprises a static ring and a movable ring, the static ring is fixed to a cavity of the bearing box, the movable ring and the static ring are connected together in a clamped mode, a first O-shaped ring is arranged between the static ring and the bearing box, a third O-shaped ring is arranged between the static ring and the movable ring, and a second O-shaped ring is arranged between the movable ring and the shaft rod. A first clamping sleeve, a second clamping sleeve and a third clamping sleeve are sequentially arranged on one side of the movable ring in a convex step shape, a first clamping ring and a second clamping ring are sequentially arranged on one side of the static ring in a step shape in a concave step shape, the first clamping sleeve is clamped into the first clamping ring, and the second clamping sleeve is clamped between the first clamping ring and the second clamping ring. And the third clamping sleeve is clamped outside the second clamping ring. The static ring and the moving ring are clamped together through pressing, installation is easy, the formed multi-layer labyrinth can effectively prevent water, dust and pollutants from entering equipment, and the service life of the bearing is prolonged.

Description

TECHNICAL FIELD

[0001] The utility model relates to bearing protection equipment technical field, concretely is a novel multilayer labyrinth type bearing protector. BACKGROUND

[0002] Bearing is a kind of mechanical parts, it plays the vital support and the role of reducing friction in mechanical equipment. Inner ring is usually closely matched with shaft, rotates together with shaft. It provides the track for rolling element, its surface usually has high-precision processing to ensure the smooth rolling of rolling element;Outer ring is generally fixed on the shell or support of equipment, corresponding to inner ring, also provides the rolling track for rolling element. The size and shape of outer ring are designed to meet the installation requirements of equipment;Rolling element is the key element for realizing low-friction rolling in bearing. Common rolling elements include ball (ball), roller (cylindrical roller, conical roller, etc.). Ball bearing is suitable for bearing relatively light load and high speed, and roller bearing is more suitable for bearing relatively heavy load.

[0003] In order to ensure the long-term normal work of bearing, protector needs to be used, the commonly used bearing protector on the market includes lip oil seal, O-ring limiting type labyrinth and spring limiting type labyrinth, etc. However, the above protectors have the following disadvantages respectively:

[0004] 1. The service life of lip oil seal is short, it cannot effectively prevent the bearing cavity from being contaminated, and the lip is easy to carbonize, which can seriously wear the shaft, so that the equipment has a large maintenance cost.

[0005] 2. The O-ring limiting type labyrinth bearing protector is easy to be damaged during assembly and operation, so that the sealing effect is lost, and the protection effect on bearing cannot be achieved.

[0006] 3. The spring limiting type single-layer labyrinth bearing protector has complex structure and is difficult to assemble, and the metal bearing protector with single-layer labyrinth structure has poor sealing effect.

[0007] Therefore, we need to propose a new multilayer labyrinth type bearing protector. UTILITY MODEL CONTENTS

[0008] The utility model aims at providing a new multilayer labyrinth type bearing protector, the device has simple structure and is convenient to use, solves the problem that the O-ring is easy to be damaged, improves the structure, further improves the service life of bearing protector, and the static ring and the dynamic ring are pressed and clamped together by the first clamping sleeve, the second clamping sleeve and the third clamping sleeve and the first clamping ring and the second clamping ring, not only simple installation, but also the multilayer labyrinth can effectively prevent water, dust and pollutants from entering the equipment, improve the service life of bearing, to solve the problems in the above background technology.

[0009] To achieve the above objectives, this utility model provides the following technical solution:

[0010] A novel multi-layer labyrinth bearing protector includes:

[0011] Static and dynamic rings;

[0012] The stationary ring is fixed to the bearing housing cavity, the rotating ring is fixed to the shaft, the rotating ring and the stationary ring are snapped together, a first O-ring is provided between the stationary ring and the bearing housing, a third O-ring is provided between the stationary ring and the rotating ring, and a second O-ring is provided between the rotating ring and the shaft.

[0013] The moving ring has a stepped, outwardly convex first retainer, a second retainer, and a third retainer arranged sequentially on one side. The stationary ring has a stepped, inwardly concave first retainer and a second retainer arranged sequentially on one side. The first retainer is inserted into the inside of the first retainer, the second retainer is inserted between the first and second retainers, and the third retainer is inserted into the outside of the second retainer.

[0014] Preferably, the openings of the first, second, and third card sleeves are all provided with protruding rings, which form obstruction grooves in the first, second, and third card sleeves.

[0015] Preferably, the second retaining ring has a raised ring at its opening, and the raised ring forms a drainage groove on the second retaining ring.

[0016] Preferably, a first sealing groove is provided on the outer periphery of the other side of the stationary ring, and the first O-ring is placed inside the first sealing groove.

[0017] Preferably, the moving ring has a second sealing groove inside, and the second O-ring is located inside the second sealing groove. The moving ring has a third sealing groove inside the first ferrule, and the third O-ring is located inside the third sealing groove.

[0018] Preferably, the stationary ring has a deceleration chamber that can retain lubricating oil in the ring opening on the side near the bearing housing cavity, and the stationary ring sidewall has an oil return hole connected to the deceleration chamber to allow lubricating oil to flow back into the bearing housing cavity. The stationary ring has a dome structure located on the side of the deceleration chamber to isolate the lubricating oil.

[0019] Compared with the prior art, the beneficial effects of this utility model are:

[0020] The utility model discloses a static ring and dynamic ring cooperation is used for protecting bearing, and the static ring and dynamic ring are combined together through the mode of clamping, and the device is simple in structure, convenient to use, solves the problem that the O type ring is easy to damage, and improves the structure, further improves bearing protector service life, and the static ring and dynamic ring are pressed and clamped together through first clamping sleeve, second clamping sleeve, third clamping sleeve and first snap ring and second snap ring, not only simple installation, but also the multilayer labyrinth that forms can effectively prevent water, dust and pollutants from entering the equipment, improve bearing life. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 It is the structural diagram of the utility model;

[0022] Figure 2 It is the structural diagram of the static ring of the utility model;

[0023] Figure 3 It is the structural diagram of the utility model speed reduction cavity;

[0024] Figure 4 It is the structural diagram of the utility model drainage groove;

[0025] Figure 5 It is the structural diagram of the dynamic ring of the utility model;

[0026] Figure 6 It is the structural diagram of the second sealing groove of the utility model;

[0027] Figure 7 It is the structural diagram of the obstacle groove of the utility model.

[0028] In the drawing: 1, static ring;2, dynamic ring;3, first O type ring;4, second O type ring;5, third O type ring;6, speed reduction cavity;7, oil return hole;8, obstacle groove;9, drainage groove;10, first sealing groove;11, second sealing groove;12, third sealing groove;13, first clamping sleeve;14, second clamping sleeve;15, third clamping sleeve;16, first snap ring;17, second snap ring;18, dome structure. DETAILED DESCRIPTION

[0029] The technical scheme in the embodiments of the utility model will be described clearly and completely in combination with the drawings in the embodiments of the utility model, and obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the person skilled in the art without making creative labor belong to the range of the utility model protection.

[0030] Please refer to Figures 1-7 The utility model provides a technical scheme:

[0031] A new type of multi-layer labyrinth bearing protector, comprising:

[0032] A static ring 1 and a dynamic ring 2, the static ring 1 is fixed on the bearing box cavity, the dynamic ring 2 is fixed on the shaft, the dynamic ring 2 and the static ring 1 are clamped together, a first O-ring 3 is arranged between the static ring 1 and the bearing box, a third O-ring 5 is arranged between the static ring 1 and the dynamic ring 2, and a second O-ring 4 is arranged between the dynamic ring 2 and the shaft;

[0033] The dynamic ring 2 is provided with a first clamping sleeve 13, a second clamping sleeve 14 and a third clamping sleeve 15 in turn on one side in a convex stepped shape, the static ring 1 is provided with a first clamping ring 16 and a second clamping ring 17 in turn on one side in a concave stepped shape, the first clamping sleeve 13 is clamped into the first clamping ring 16, the second clamping sleeve 14 is clamped between the first clamping ring 16 and the second clamping ring 17, and the third clamping sleeve 15 is clamped outside the second clamping ring 17. A first sealing groove 10 is arranged on the periphery of the other side of the static ring 1, and the first O-ring 3 is inside the first sealing groove 10. A second sealing groove 11 is arranged inside the dynamic ring 2, the second O-ring 4 is inside the second sealing groove 11, and a third sealing groove 12 is arranged inside the dynamic ring 2 at the ring of the first clamping sleeve 13, and the third O-ring 5 is inside the third sealing groove 12.

[0034] The utility model discloses a static ring 1 and a dynamic ring 2 are used for protecting the bearing, the static ring 1 and the dynamic ring 2 are combined together through the clamping mode, when using, first O-ring 3 is put into the first sealing groove 10 on the static ring 1, the static ring 1 and the bearing are fixed together, the first O-ring 3 and the static ring 1 form the plugging to the bearing cavity, second O-ring 4 is put into the second sealing groove 11 of the dynamic ring 2, third O-ring 5 is put into the third sealing groove 12, the dynamic ring 2 is pressed from the one side of the static ring 1 to make the dynamic ring 2 and the static ring 1 clamped together, and the shaft is inserted into the ring mouth of the dynamic ring 2 and is fixed, because the first clamping sleeve 13, the second clamping sleeve 14 and the third clamping sleeve 15 are arranged on the dynamic ring 2, the first clamping ring 16 and the second clamping ring 17 are arranged on the static ring 1, and the both cooperate and form the multi-layer labyrinth structure, thereby avoiding that the dust, water stain and the like of outside intrude into the bearing.

[0035] The dynamic ring 2 is fixed on the shaft through the second O-ring 4, thereby avoiding the friction to the shaft, the static ring 1 is fixed on the bearing cavity through the first O-ring 3, the dynamic ring 2 and the static ring 1 are limited through the buckle type, are more easy to install, the third O-ring 5 playing a sealing role is between the dynamic ring 1 and the static ring 1, will not be damaged when installing, will not be damaged third O-ring 5 due to the action of buckle when the shaft is dislocated, ensure the stability of sealing performance.

[0036] Overall, the device is simple in structure, convenient to use, solves the problem of easy damage of the O-ring, improves the structure, and further improves the service life of the bearing protector. The static ring 1 and the dynamic ring 2 are pressed and clamped together by the first sleeve 13, the second sleeve 14, the third sleeve 15, and the first clasp 16 and the second clasp 17. Not only is the installation simple, but also the multi-layer labyrinth formed can effectively prevent water, dust and pollutants from entering the equipment, thereby improving the bearing life.

[0037] The dynamic ring 2 and the static ring 1 are buckled and limited, which avoids damage to the third O-ring 5 and causes sealing failure. The dynamic ring 2 and the static ring 1 are designed to be pressed in, which makes the installation more simple. The static ring 1 is made of tin bronze material, which avoids the generation of electric sparks during friction.

[0038] Further, please refer to Figures 5-7 :

[0039] The ring opening of the first sleeve 13, the second sleeve 14 and the third sleeve 15 is provided with a protruding ring, which forms an obstacle groove 8 on the first sleeve 13, the second sleeve 14 and the third sleeve 15.

[0040] Because the multi-layer labyrinth is arranged between the static ring 1 and the dynamic ring 1, and the obstacle groove 8 is arranged on the dynamic ring 2, the entry of water, dust and pollutants can be prevented.

[0041] Further, please refer to Figures 2-4 :

[0042] The ring opening of the second clasp 17 is provided with a protruding ring, which forms a drainage groove 9 on the second clasp 17.

[0043] The drainage groove 9 is arranged on the outer wall of the second clasp 17, which can guide and discharge the water stains from the outside, and further prevent the water stains from the outside from entering the bearing.

[0044] In addition, please refer to Figures 1-4 :

[0045] The static ring 1 is provided with a speed reduction cavity 6 capable of retaining lubricating oil in the ring opening of the side close to the bearing box cavity. The static ring 1 is provided with an oil return hole 7 communicated with the speed reduction cavity 6 for returning the lubricating oil to the bearing box cavity. The static ring 1 is provided with a dome structure 18 on one side of the speed reduction cavity 6 for isolating the lubricating oil.

[0046] The oil splashed during the work of the bearing is retained in the cavity as much as possible by arranging the speed reduction cavity 6 on the static ring 1. The lubricating oil entering the speed reduction cavity 6 is returned to the bearing box by arranging the oil return hole 7. The special dome structure 18 design can further prevent oil leakage.

[0047] Although the embodiments of the utility model have been shown and described above, it can be understood that the above-mentioned embodiments are exemplary and cannot be understood as limiting the utility model, and the ordinary skilled in the art can change, modify, replace and transform the above-mentioned embodiments within the scope of the utility model.

Claims

1. A new type of multi-layered labyrinth bearing protector characterized in that, The utility model relates to a bearing box cavity lubricating oil retaining device, including: Static ring (1) and dynamic ring (2); The static ring (1) is fixed on the bearing box cavity, the dynamic ring (2) is fixed on the axle rod, the dynamic ring (2) and static ring (1) are clamped together, and the first O type ring (3) is arranged between the static ring (1) and the bearing box, the third O type ring (5) is arranged between the static ring (1) and the dynamic ring (2), and the second O type ring (4) is arranged between the dynamic ring (2) and the axle rod; The dynamic ring (2) one side presents the convex ladder shape and is sequentially provided with first sleeve (13), second sleeve (14) and third sleeve (15), and the static ring (1) one side presents the recessed ladder shape and is sequentially provided with first snap ring (16) and second snap ring (17), the first sleeve (13) is clamped into the inside of first snap ring (16), the second sleeve (14) is clamped between first snap ring (16) and second snap ring (17), and the third sleeve (15) is clamped in the outside of second snap ring (17).

2. A new type of multi-layered labyrinth bearing protector according to claim 1, characterized in that: The ring mouth of first sleeve (13), second sleeve (14) and third sleeve (15) is provided with convex ring, and the convex ring forms barrier groove (8) in first sleeve (13), second sleeve (14) and third sleeve (15).

3. A new type of multi-layered labyrinth bearing protector according to claim 1, characterized in that: The ring mouth of second snap ring (17) is provided with convex ring, and the convex ring forms drainage groove (9) on second snap ring (17).

4. A new type of multi-layered labyrinth bearing protector according to claim 1, characterized in that: The other side ring mouth of static ring (1) is provided with first sealing groove (10) in the periphery, and the first O type ring (3) is in the inside of first sealing groove (10).

5. A new type of multi-layered labyrinth bearing protector according to claim 1, characterized in that: The ring of dynamic ring (2) is provided with second sealing groove (11), and the second O type ring (4) is in the inside of second sealing groove (11), and the ring of dynamic ring (2) is provided with third sealing groove (12) in first sleeve (13), and the third O type ring (5) is in the inside of third sealing groove (12).

6. A new type of multi-layered labyrinth bearing protector according to claim 1 characterized in that: The ring mouth of static ring (1) near the bearing box cavity is provided with deceleration cavity (6) that can retain lubricating oil in the ring mouth, the side wall of static ring (1) is provided with oil return hole (7) that is communicated with deceleration cavity (6) to return lubricating oil to the bearing box cavity, and the ring of static ring (1) is provided with dome structure (18) on one side of deceleration cavity (6) to isolate lubricating oil.

Images