Bearing with armored sealing structure

Abstract

According to the bearing with the armored sealing structure provided by the utility model, the armored protective cover is arranged on the bearing inner ring, so that the first annular sealing cover is accommodated in the protective space defined by the bearing outer ring, the armored protective cover and the bearing inner ring, and the armored protective cover can play a role in protecting the first annular sealing cover; and the first annular sealing cover is prevented from being collided and impacted by foreign objects. Moreover, as the stop structure on the bearing inner ring can play a role in axially positioning the armored protective cover, the first annular sealing cover cannot extrude the first annular sealing piece when the armored protective cover is collided and impacted by foreign objects; therefore, interference to a rolling body in the bearing due to the fact that the first annular sealing cover extrudes the first annular sealing piece is effectively avoided. Meanwhile, the grass winding prevention structure on the armored protective cover can prevent weeds, straw or ribs, branches and leaves of crops from being wound, and slipping between the first annular sealing cover and the bearing outer ring and / or the bearing inner ring is avoided.

Description

TECHNICAL FIELD

[0001] The utility model belongs to bearing technical field, especially, relate to a bearing with armored type sealing structure. BACKGROUND

[0002] The bearing is easy to be polluted by external environment, so the bearing needs to be sealed to prevent foreign matters from entering the bearing and causing damage to the bearing. At present, the bearing is generally sealed by a sealing cover and a sealing ring. When the bearing is in use, the sealing cover is easy to be impacted by external objects, which causes the sealing cover to extrude the sealing ring, resulting in the contact between the sealing ring and the rolling elements inside the bearing and interference with the rolling elements. In addition, the sealing cover is easy to be entangled by weeds, straw or stems and leaves of crops, which causes the sealing cover to slip between the outer ring and / or the inner ring of the bearing. SUMMARY

[0003] In view of the above problems in the prior art, the utility model aims to provide a bearing with armored type sealing structure to solve the problems that the sealing cover of the bearing is extruded to the sealing ring when the sealing cover is impacted by external objects, resulting in the contact between the sealing ring and the rolling elements inside the bearing and interference with the rolling elements, and the sealing cover is easy to be entangled by weeds, straw or stems and leaves of crops.

[0004] To achieve the above-mentioned purpose, the utility model adopts the technical scheme of providing a bearing with armored type sealing structure, comprising:

[0005] An outer ring of the bearing is provided with an outer raceway on the inner surface;

[0006] An inner ring of the bearing is provided with an inner raceway on the outer surface;

[0007] A plurality of rolling elements are arranged in a circumferential array between the outer ring and the inner ring of the bearing, and each rolling element is rolling supported in the outer raceway and the inner raceway;

[0008] A first sealing assembly comprises a first annular sealing cover sleeved on the inner ring of the bearing and a first annular sealing member connected to the inner side of the first annular sealing cover, the outer peripheral edge of the first annular sealing cover is connected to the outer ring of the bearing, the inner peripheral edge between the first annular sealing cover and the inner ring of the bearing has a first gap, and the inner peripheral edge of the first annular sealing member is in interference contact with the inner ring of the bearing; and

[0009] An armored protective cover is arranged on the bearing inner ring and located outside the first annular sealing cover, so that the first annular sealing cover is accommodated in the protective space formed by the bearing outer ring, the armored protective cover and the bearing inner ring, and a second gap is formed between the outer peripheral edge of the armored protective cover and the bearing outer ring.

[0010] The bearing inner ring is provided with a stop structure for stopping the axial movement of the armored protective cover, and the outer surface of the armored protective cover is provided with an anti-winding structure.

[0011] Further, the stop structure is a limiting step, a limiting protrusion or a limiting groove arranged on the bearing inner ring.

[0012] Further, the anti-winding structure is a conical surface structure or a convex spherical surface structure arranged on the outer surface of the armored protective cover.

[0013] Further, a first convex ring is arranged in the central ring hole of the armored protective cover, a second convex ring is arranged on the first annular sealing cover, and the first convex ring and the second convex ring are arranged in cross to form a labyrinth seal structure between the armored protective cover and the first annular sealing cover.

[0014] Further, a third gap is formed between the first convex ring and the second convex ring.

[0015] Further, the first annular sealing cover comprises a first sealing body connected with the first annular sealing cover and a first sealing lip arranged on the first sealing body, and the first sealing lip is in interference contact with the outer peripheral surface of the bearing inner ring.

[0016] Further, a plurality of first sealing lips are arranged on the first sealing body, and the plurality of first sealing lips are arranged in sequence and spaced apart along the axial direction of the first annular sealing cover.

[0017] Further, the first annular sealing cover is arranged in an outwardly expanding metal skeleton structure, and the first annular sealing cover is arranged in a first inner cavity on the inner side of the first annular sealing cover.

[0018] Further, the bearing with the armored sealing structure further comprises a second sealing assembly, the first sealing assembly and the second sealing assembly are respectively located on both sides of the bearing outer ring, the second sealing assembly comprises a second annular sealing cover arranged on the bearing inner ring and a second annular sealing cover connected with the inner side of the second annular sealing cover, the outer peripheral edge of the second annular sealing cover is connected with the bearing outer ring, the inner peripheral edge of the second annular sealing cover and the bearing inner ring has a fourth gap, and the inner peripheral edge of the second annular sealing cover is in interference contact with the bearing inner ring.

[0019] Further, the bearing outer ring is provided with a clamping groove for clamping the first annular sealing cover.

[0020] Compared with the prior art, the one or more technical solutions in the embodiments of the utility model have at least one of the following beneficial effects:

[0021] The bearing with the armored sealing structure in the embodiments of the utility model has the armored protective cover arranged on the bearing inner ring and outside the first annular sealing cover, so that the first annular sealing cover is accommodated in the protective space formed by the bearing outer ring, the armored protective cover and the bearing inner ring, and the armored protective cover can protect the first annular sealing cover from collision and impact of external objects. In addition, the stop structure on the bearing inner ring can axially position the armored protective cover, so that even if the armored protective cover is impacted by external objects, the first annular sealing cover will not be pressed against the first annular sealing member, thereby effectively avoiding the phenomenon that the first annular sealing cover presses the first annular sealing member to interfere with the rolling elements in the bearing. Meanwhile, the anti-entangling structure on the armored protective cover can prevent weeds, straws or stems and leaves of crops from being entangled on the first annular sealing cover, so that the first annular sealing cover will not slip between the bearing outer ring and / or the bearing inner ring. BRIEF DESCRIPTION OF DRAWINGS

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the utility model, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description are only some embodiments of the utility model, and those skilled in the art can obtain other drawings according to these drawings without creative labor.

[0023] Figure 1 The utility model provides the bearing with armored sealing structure's three-dimensional structure schematic diagram provided with the embodiment of the utility model;

[0024] Figure 2 The utility model provides the bearing with armored sealing structure's sectional structure schematic diagram provided with the embodiment of the utility model;

[0025] Figure 3 The utility model provides the bearing outer ring through the rolling element assembly on the bearing inner ring's three-dimensional structure schematic diagram provided with the embodiment of the utility model;

[0026] Figure 4 The utility model provides the armored protective cover's three-dimensional structure schematic diagram provided with the embodiment of the utility model;

[0027] Figure 5 The utility model provides the armored protective cover's another three-dimensional structure schematic diagram provided with the embodiment of the utility model;

[0028] Figure 6 An assembly view of the first sealing assembly is provided for the embodiment of the utility model.

[0029] Figure 7 An exploded view of the first sealing assembly is provided for the embodiment of the utility model.

[0030] Figure 8 An assembly view of the second sealing assembly is provided for the embodiment of the utility model.

[0031] Figure 9 An exploded view of the second sealing assembly is provided for the embodiment of the utility model.

[0032] Figure 10 An exploded view of the bearing with the armored sealing structure is provided for the embodiment of the utility model.

[0033] In the drawings, various reference signs represent:

[0034] 1- bearing outer ring; 11- outer ring raceway;

[0035] 2- bearing inner ring; 21- inner ring raceway; 22- stop structure;

[0036] 3- rolling element; 4- retainer;

[0037] 5- first sealing assembly; 51- first annular sealing cover; 511- second protruding ring; 512- first inner cavity; 52- first annular sealing member; 521- first sealing main body; 522- first sealing lip;

[0038] 6- armored protective cover; 61- anti-winding grass structure; 62- first protruding ring;

[0039] 7- second sealing assembly; 71- second annular sealing cover; 711- second inner cavity; 72- second annular sealing member; 721- second sealing main body; 722- second sealing lip;

[0040] 8- clamping groove; 9- protective space; 10- first gap; 20- second gap. DETAILED DESCRIPTION

[0041] In order to make the technical problems, technical solutions and beneficial effects of the utility model to be solved more clear and obvious, the utility model is further described in detail below in combination with the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the utility model, and are not used to limit the utility model.

[0042] It is to be noted that when an element is referred to as being "connected to" or "set on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0043] In addition, the terms "first", "second", "third", are used only for descriptive purposes and should not be construed as indicating or implying relative importance or an indicated number of technical features. Therefore, the features defined as "first", "second", "third" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "a plurality of" is two or more than two, unless otherwise explicitly specified. The meaning of "a plurality of" is one or more than one, unless otherwise explicitly specified.

[0044] In the description of the present application, it should be understood that the orientations or positional relationships indicated by the terms "center", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as limiting the devices or elements indicated to have a specific orientation, to be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present application.

[0045] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0046] Throughout the specification, reference to "one embodiment" or "an embodiment" means that a specific feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment of the application. Therefore, the phrases "in one embodiment", "in some embodiments", or "in some embodiments" appearing in various places throughout the specification are not all referring to the same embodiment. In addition, in one or more embodiments, the specific features, structures, or characteristics can be combined in any suitable manner.

[0047] Please refer to Figures 1 to 10The bearing with the armored sealing structure is described below. Figure 1 、 Figure 2 and Figure 3 The bearing with the armored sealing structure comprises a bearing outer ring 1, a bearing inner ring 2, a plurality of rolling elements 3, a retainer 4, a first sealing assembly 5 and an armored protective cover 6. An outer ring raceway 11 is arranged on an inner surface of the bearing outer ring 1. An inner ring raceway 21 is arranged on an outer surface of the bearing inner ring 2. The plurality of rolling elements 3 are arranged in a circumferential array between the bearing outer ring 1 and the bearing inner ring 2 through the retainer 4, and each rolling element 3 is rolling supported in the outer ring raceway 11 and the inner ring raceway 21. The bearing outer ring 1 can be rolling mounted on the outer side of the bearing inner ring 2 through the plurality of rolling elements 3. The rolling element 3 can be but is not limited to a roller or a ball. Figure 2 、 Figure 6 and Figure 7 The first sealing assembly 5 comprises a first annular sealing cover 51 sleeved on the bearing inner ring 2 and a first annular sealing member 52 connected to the inner side of the first annular sealing cover 51. The outer peripheral edge of the first annular sealing cover 51 is connected to the bearing outer ring 1. The first annular sealing cover 51 and the bearing inner ring 2 have a first gap 10 between the inner peripheral edge of the first annular sealing cover 51 and the bearing inner ring 2, so that the first annular sealing cover 51 and the bearing inner ring 2 are gap-fitted, friction and interference between the first annular sealing cover 51 and the bearing inner ring 2 are avoided, the stability of the bearing in operation is affected, and the service life of the bearing is reduced. The inner peripheral edge of the first annular sealing member 52 is in interference contact with the bearing inner ring 2. While ensuring that the bearing inner ring 2 can rotate relative to the bearing outer ring 1, the sealing of the bearing is realized, and external impurities are prevented from entering the inside of the bearing to cause damage to the bearing. Figure 1 、 Figure 2 The armored protective cover 6 is sleeved on the bearing inner ring 2 and located on the outer side of the first annular sealing cover 51. The first annular sealing cover 51 is accommodated in a protective space 9 formed by the bearing outer ring 1, the armored protective cover 6 and the bearing inner ring 2, so that the first annular sealing cover 51 can be protected by the armored protective cover 6, and the first annular sealing cover 51 is prevented from being impacted by external objects. The outer peripheral edge of the armored protective cover 6 and the bearing outer ring 1 have a second gap 20 therebetween, so that the armored protective cover 6 and the bearing outer ring 1 are gap-fitted, friction and interference between the armored protective cover 6 and the bearing outer ring 1 are avoided, the stability of the bearing in operation is affected, and the service life of the bearing is reduced. Figure 2 、 Figure 3 and Figure 10The bearing inner ring 2 is provided with a stop structure 22 for axially moving the armor protective cover 6, the stop structure 22 plays a stop role on the armor protective cover 6, realizes the axial positioning of the armor protective cover 6, and even if the armor protective cover 6 is impacted by external objects, the first annular sealing cover 51 cannot extrude the first annular sealing member 52, so that the phenomenon that the first annular sealing cover 51 extrudes the first annular sealing member 52 to interfere with the rolling body 3 in the bearing is effectively avoided. In addition, the armor protective cover 6 is provided with a grass entangling prevention structure 61 on the outer surface, so that the stems and leaves of weeds, straws or crops are difficult to entangle on the outer surface of the armor protective cover 6, and then the stems and leaves of weeds, straws or crops are prevented from entangling on the first annular sealing cover 51 to cause the first annular sealing cover 51 to slip between the bearing outer ring 1 and / or the bearing inner ring 2. It should be noted that the armor protective cover 6 can be but is not limited to a cover body made of a thickened steel plate, which has high strength and rigidity and is not deformed under impact, so as to protect the first annular sealing cover 51.

[0048] Compared with the prior art, the bearing with the armor type sealing structure provided in the embodiment of the utility model, the armor protective cover 6 is arranged on the bearing inner ring 2 and located outside the first annular sealing cover 51, so that the first annular sealing cover 51 is accommodated in the protective space 9 formed by the bearing outer ring 1, the armor protective cover 6 and the bearing inner ring 2, and the first annular sealing cover 51 can be protected by the armor protective cover 6, so that the first annular sealing cover 51 is prevented from being impacted by external objects. In addition, the stop structure 22 on the bearing inner ring 2 can axially position the armor protective cover 6, so that even if the armor protective cover 6 is impacted by external objects, the first annular sealing cover 51 cannot extrude the first annular sealing member 52, so that the phenomenon that the first annular sealing cover 51 extrudes the first annular sealing member 52 to interfere with the rolling body 3 in the bearing is effectively avoided. At the same time, the grass entangling prevention structure 61 on the armor protective cover 6 can prevent the stems and leaves of weeds, straws or crops from entangling on the first annular sealing cover 51, so that the first annular sealing cover 51 cannot slip between the bearing outer ring 1 and / or the bearing inner ring 2.

[0049] Please further refer to Figure 2 , Figure 3 and Figure 10In some embodiments, the stop structure 22 can be a limiting step provided on the bearing inner ring 2, which axially positions the armored cover 6 sleeved on the bearing inner ring 2. Even if the armored cover 6 is impacted by external objects, the armored cover 6 will not touch the first annular sealing cover 51 to cause the first annular sealing cover 51 to press the first annular sealing member 52, thereby effectively avoiding the phenomenon that the first annular sealing cover 51 presses the first annular sealing member 52 to interfere with the rolling element 3 inside the bearing. It should be noted that in other embodiments, the stop structure 22 can also be a limiting protrusion or a limiting groove that can axially position the armored cover 6 sleeved on the bearing inner ring 2.

[0050] Please further refer to Figure 1 , Figure 2 and Figure 4 In some embodiments, the grass entangling prevention structure 61 can be a conical surface structure provided on the outer surface of the armored cover 6. Due to the provision of the conical surface structure, it is difficult for the stems and leaves of weeds, straws or crops to entangle on the outer surface of the armored cover 6, thereby avoiding the entanglement of the stems and leaves of weeds, straws or crops on the first annular sealing cover 51 to cause the first annular sealing cover 51 to slip between the bearing outer ring 1 and / or the bearing inner ring 2. It should be noted that in other embodiments, the grass entangling prevention structure 61 can also be a convex spherical surface structure provided on the outer surface of the armored cover 6.

[0051] Please further refer to Figure 2 , Figure 5 and Figure 7 In some embodiments, a first protruding ring 62 is provided in the center ring hole of the armored cover 6, a second protruding ring 511 is provided on the first annular sealing cover 51, and the first protruding ring 62 and the second protruding ring 511 are crosswise or staggered, thereby forming a labyrinth seal structure between the armored cover 6 and the first annular sealing cover 51. Due to the complex sealing path of the labyrinth seal structure, the difficulty of contamination intrusion is greatly increased, the sealing performance of the bearing is improved, and the service life of the bearing is further improved. It should be noted that a plurality of first protruding rings 62 can be provided in the center ring hole of the armored cover 6 and / or the inner side of the armored cover 6, and a second protruding ring 511 corresponding to each first protruding ring 62 is provided on the first annular sealing cover 51, so that the plurality of first protruding rings 62 and the plurality of second protruding rings 511 are crosswise or staggered, thereby forming a labyrinth seal structure with a more complex path between the armored cover 6 and the first annular sealing cover 51, thereby further improving the sealing performance of the bearing.

[0052] In some embodiments, the first convex ring 62 and the second convex ring 511 have a third gap therebetween, so that the first convex ring 62 and the second convex ring 511 are gap-fitted, avoiding friction and interference between the first convex ring 62 and the second convex ring 511 to affect the stability of the bearing.

[0053] For further reference, please see Figure 7 In some embodiments, the first annular seal 52 comprises a first sealing body 521 connected with the first annular seal cover 51 and a first sealing lip 522 arranged on the first sealing body 521, and the first sealing lip 522 is in interference contact with the outer circumferential surface of the bearing inner ring 2. In this embodiment, the first annular seal cover 51 is fixedly connected with the first annular seal cover 51 by bonding or welding, so that the first annular seal cover 51 can support and protect the first sealing body 521, effectively preventing the first sealing body 521 from deforming and changing the interference amount of the first sealing lip 522 with the first contact surface. The first sealing lip 522 is in interference contact with the outer circumferential surface of the bearing inner ring 2, which ensures that the bearing inner ring 2 can rotate relative to the bearing outer ring 1 while achieving sealing of the bearing to prevent external impurities from entering the bearing and causing damage to the bearing.

[0054] For further reference, please see Figure 7 In some embodiments, the first sealing body 521 is provided with a plurality of first sealing lips 522, and the plurality of first sealing lips 522 are arranged in sequence along the axial direction of the first annular seal cover 51, so as to form multiple seals and effectively improve the sealing performance.

[0055] For further reference, please see Figure 2 、 Figure 6 and Figure 7 In some embodiments, the first annular seal cover 51 is arranged in an outwardly expanding metal framework structure, and the first annular seal 52 is arranged in a first inner cavity 512 on the inner side of the first annular seal cover 51, which can avoid interference of the first annular seal 52 with the rolling elements 3, effectively increase the grease filling space inside the bearing, fill more lubricating grease, and improve the operation and maintenance period of the equipment.

[0056] For further reference, please see Figure 2 、 Figure 8 and Figure 9In some embodiments, the bearing with the armored sealing structure further comprises a second sealing assembly 7, the first sealing assembly 5 and the second sealing assembly 7 are respectively arranged on two sides of the bearing outer ring 1, the second sealing assembly 7 comprises a second annular sealing cover 71 sleeved on the bearing inner ring 2 and a second annular sealing element 72 connected to the inner side of the second annular sealing cover 71, the outer peripheral edge of the second annular sealing cover 71 is connected to the bearing outer ring 1, and the inner peripheral edge of the second annular sealing cover 71 has a fourth gap with the bearing inner ring 2, so that the second annular sealing cover 71 and the bearing inner ring 2 are in clearance fit, avoiding friction and interference between the second annular sealing cover 71 and the bearing inner ring 2, affecting the stability of the bearing and reducing the service life of the bearing. The inner peripheral edge of the second annular sealing element 72 is in interference contact with the bearing inner ring 2, which ensures that the bearing inner ring 2 can rotate relative to the bearing outer ring 1 while achieving sealing of the bearing to prevent external impurities from entering the bearing and causing damage to the bearing.

[0057] For further reference, please see Figure 9 In some embodiments, the second annular sealing element 72 comprises a second sealing body 721 connected to the second annular sealing cover 71 and a second sealing lip 722 provided on the second sealing body 721, and the second sealing lip 722 is in interference contact with the outer peripheral surface of the bearing inner ring 2. In this embodiment, the second annular sealing cover 71 is fixedly connected to the second annular sealing cover 71 by bonding or welding, so that the second annular sealing cover 71 can support and protect the second sealing body 721, effectively preventing the second sealing body 721 from deforming and changing the interference amount between the second sealing lip 722 and the second contact surface. The inner peripheral edge of the second annular sealing element 72 is in interference contact with the bearing inner ring 2, which ensures that the bearing inner ring 2 can rotate relative to the bearing outer ring 1 while achieving sealing of the bearing to prevent external impurities from entering the bearing and causing damage to the bearing.

[0058] For further reference, please see Figure 9 In some embodiments, the second sealing body 721 is provided with a plurality of second sealing lips 722, and the plurality of second sealing lips 722 are arranged in sequence and spaced apart along the axial direction of the second annular sealing cover 71, so as to form multiple seals and effectively improve the sealing performance.

[0059] For further reference, please see Figure 2 , Figure 8 and Figure 9 In some embodiments, the second annular sealing cover 71 is provided in an outwardly expanding metal framework structure, and the second annular sealing element 72 is arranged in a second inner cavity 711 on the inner side of the second annular sealing cover 71, which can avoid interference between the second annular sealing element 72 and the rolling body 3, effectively increase the grease filling space inside the bearing, fill more lubricating grease, and improve the operation and maintenance period of the equipment.

[0060] Further reference should be made to Figure 2 and Figure 10 In some embodiments, the bearing outer ring 1 is provided with a clamping groove 8 for clamping the first annular sealing cover 51, facilitating the installation and removal of the first annular sealing cover 51. At the same time, the bearing outer ring 1 is provided with a clamping groove 8 for clamping the second annular sealing cover 71, facilitating the installation and removal of the second annular sealing cover 71.

[0061] The above only describes the preferred embodiments of the present application and is not intended to limit the present application. Any modification, equivalent replacement and improvement within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A bearing having an armoured seal structure, characterised in that, The bearing comprises: a bearing outer ring, an outer ring raceway being arranged on an inner surface of the bearing outer ring; a bearing inner ring, an inner ring raceway being arranged on an outer surface of the bearing inner ring; a plurality of rolling elements, arranged in a circumferential array between the bearing outer ring and the bearing inner ring, and each rolling element being rolling supported in the outer ring raceway and the inner ring raceway; a first sealing assembly, comprising a first annular sealing cover sleeved on the bearing inner ring and a first annular sealing member connected to an inner side of the first annular sealing cover, an outer peripheral edge of the first annular sealing cover being connected to the bearing outer ring, a first gap being formed between an inner peripheral edge of the first annular sealing cover and the bearing inner ring, and an inner peripheral edge of the first annular sealing member being in interference contact with the bearing inner ring; and an armored protective cover, sleeved on the bearing inner ring and located at an outer side of the first annular sealing cover, so that the first annular sealing cover is accommodated in a protective space formed by the bearing outer ring, the armored protective cover and the bearing inner ring, and a second gap being formed between an outer peripheral edge of the armored protective cover and the bearing outer ring. The bearing inner ring is provided with a stop structure for stopping axial movement of the armored protective cover, and an outer surface of the armored protective cover is provided with an anti-tangling structure.

2. The bearing having an armored seal structure according to claim 1, wherein, The stop structure is a limiting step, a limiting protrusion or a limiting groove arranged on the bearing inner ring.

3. The bearing having an armored seal structure as set forth in claim 1, wherein, The anti-tangling structure is a conical surface structure or a convex spherical surface structure arranged on the outer surface of the armored protective cover.

4. The bearing having an armored seal structure according to claim 1, wherein, A first convex ring is arranged in a central ring hole of the armored protective cover, a second convex ring is arranged on the first annular sealing cover, and the first convex ring and the second convex ring are arranged in cross to form a labyrinth sealing structure between the armored protective cover and the first annular sealing cover.

5. The bearing having an armored seal structure according to claim 4, wherein, A third gap is formed between the first convex ring and the second convex ring.

6. The bearing having an armored seal structure as set forth in claim 1, wherein, The first annular sealing member comprises a first sealing body connected to the first annular sealing cover and a first sealing lip arranged on the first sealing body, and the first sealing lip is in interference contact with an outer peripheral surface of the bearing inner ring.

7. The bearing having an armored seal structure as set forth in claim 6, wherein, A plurality of first sealing lips are arranged on the first sealing body, and the plurality of first sealing lips are sequentially and spacedly arranged along an axial direction of the first annular sealing cover.

8. The bearing having an armored seal structure as set forth in claim 1, wherein, The first annular sealing cover is arranged in an outwardly expanding metal framework structure, and the first annular sealing member is arranged in a first inner cavity on an inner side of the first annular sealing cover.

9. The bearing having an armored seal structure as set forth in claim 1, wherein, The bearing with the armored sealing structure further comprises a second sealing assembly, the first sealing assembly and the second sealing assembly are respectively arranged on two sides of the bearing outer ring, the second sealing assembly comprises a second annular sealing cover sleeved on the bearing inner ring and a second annular sealing member connected to an inner side of the second annular sealing cover, an outer peripheral edge of the second annular sealing cover is connected to the bearing outer ring, a fourth gap is formed between an inner peripheral edge of the second annular sealing cover and the bearing inner ring, and an inner peripheral edge of the second annular sealing member is in interference contact with the bearing inner ring.

10. A bearing having an armoured seal structure as claimed in any one of claims 1 to 9, characterised in that, A clamping groove is arranged on the bearing outer ring for clamping the first annular sealing cover.

Images