Joint and gear ring combined bearing with seal

Abstract

The utility model relates to a bearing structure, in particular to a joint and gear ring combined bearing with a seal, which comprises an outer ring unit and an inner ring unit, and mutually meshed gear structures are arranged between the inner circumference of the outer ring unit and the outer circumference of the inner ring unit; the meshed tooth structures are arranged in the central areas of the inner circumference of the outer ring unit and the outer circumference of the inner ring unit; the inner circumference of the outer ring unit and the two ends of the outer circumference of the inner ring unit are spherical surfaces which are matched with each other; the inner ring unit is sleeved with the outer ring unit in a swinging mode; the axial swing gear ring combined type sealed bearing structure meets the use characteristic that a knuckle bearing can bear torque; the inner gear ring and the outer gear ring adopt the straight tooth and spherical tooth design to solve the problem of flexural deformation when the shaft is loaded; the inner gear ring and the outer gear ring are designed differently to ensure that the bearing can swing axially; and the joint and gear ring combined design can reduce the manufacturing cost.

Description

Technical Field

[0001] The utility model relates to a bearing structure, in particular to a joint and gear ring combined sealed bearing, belonging to the field of bearing industry. Background Art

[0002] With the market demand for highway construction and tunnel opening, TBM shield machines are developing rapidly. TBM-specific large spindle bearings are developing rapidly. Spherical bearings are widely used in the bearing industry, but spherical bearings that bear bearing torque have not been used. Therefore, it is necessary to develop a combined bearing that can meet the requirements of spherical bearings. Utility Model Content

[0003] In view of the above technical requirements, in order to meet the new use requirements of joint bearings, the purpose of the utility model is to provide a joint and gear ring combined sealed bearing, which can carry torque and realize axial swing at the same time, and adopts a joint and gear ring combined design to reduce manufacturing costs.

[0004] In order to achieve the above-mentioned purpose, the technical solution adopted by the utility model is: a joint and gear ring combined sealed bearing, comprising: an outer ring unit and an inner ring unit, a mutually meshing tooth structure is arranged between the inner periphery of the outer ring unit and the outer periphery of the inner ring unit; the mutually meshing tooth structure is arranged in the central area of ​​the inner periphery of the outer ring unit and the outer periphery of the inner ring unit; the inner periphery of the outer ring unit and the two end positions of the outer periphery of the inner ring unit are both mutually matched spherical surfaces; the outer ring unit is swung and sleeved outside the inner ring unit;

[0005] Furthermore, two ends of the inner ring unit are respectively provided with extensions of a certain length relative to two ends of the outer ring unit, and the extensions at two ends of the inner ring unit have different lengths;

[0006] A sealing component is provided at the junction of the outer diameter of the inner ring unit extension at one end of the bearing and the end face of the outer ring unit at that end. The side of the sealing component in contact with the outer diameter of the inner ring unit is a spherical surface, which fits the outer diameter of the inner ring unit to ensure the sealing inside the bearing;

[0007] Further, the outer ring unit is a split assembly structure, including an outer ring and an outer ring inner gear ring, the matching end faces of the outer ring and the outer ring inner gear ring are provided with concave and convex stoppers and sealing rings, the outer ring and the outer ring inner gear ring are axially provided with through bolt holes, and the outer ring and the outer ring inner gear ring are fastened together by bolts;

[0008] Furthermore, the outer ring inner gear ring is formed with a toothed area in the inner diameter direction of the outer ring, and the toothed area is key-connected to the outer ring.

[0009] Furthermore, the outer surface of the tooth area of ​​the outer ring inner gear ring is designed as a straight tooth form;

[0010] Similarly, the inner ring unit is a split assembly structure, including an inner ring and an inner ring outer gear ring, the inner ring and the inner ring outer gear ring are provided with concave and convex stoppers and sealing rings on their matching end faces, the inner ring outer gear ring is provided with a through axial bolt hole from the outside to the inside, and a matching axial bolt blind hole is provided on the inner ring end face corresponding to the axial bolt hole, and the inner ring and the inner ring outer gear ring are connected together by bolts;

[0011] Furthermore, the inner ring outer gear ring is formed with a toothed area in the outer diameter direction of the inner ring, and the inside of the toothed area is connected to the inner ring by a key;

[0012] Furthermore, the outer surface of the tooth area of ​​the inner ring outer gear ring is designed in the form of spherical teeth;

[0013] The spur teeth of the outer ring inner gear ring and the spherical teeth of the inner ring outer gear ring mesh with each other, and two tooth shapes are arranged differently to ensure that the bearing can achieve axial swing;

[0014] Furthermore, a plurality of sealing rings are evenly arranged on the spherical surface area between the outer ring and the inner ring in the direction of the bearing sealing assembly, so as to increase the sealing effect of the bearing;

[0015] Preferably, the number of the sealing rings is three, and the three sealing rings are embedded in the grooves provided on the inner diameter spherical surface of the outer ring, and the three sealing rings are fitted with the outer diameter spherical surface of the inner ring to ensure sealing.

[0016] The technical concept of the bearing of this scheme being applied to a TBM shield machine is that it also includes: a shaft and an outer ring connecting piece; one end of the shaft in the shield machine is fixed to an equipment component, and the other end is a free end for connecting to the bearing; the inner ring unit of the bearing is inserted into the free end of the shaft; the end face of one end of the outer ring connecting piece matches the outer end face of the outer ring, and a connecting hole matching the bolt hole of the outer ring unit is provided on the outer ring connecting piece, and the outer ring unit of the bearing is connected to the outer ring connecting piece by bolts; the inner diameter of the outer ring connecting piece matches the outer diameter of the bearing sealing assembly.

[0017] When the above structure is in operation, the outer ring gear of the bearing outer ring and the outer ring gear of the inner ring engage with each other, and the outer ring gear of the bearing outer ring unit swings axially at a certain angle outside the inner ring unit; and the inner ring gear of the bearing outer ring and the outer ring gear of the inner ring are designed with straight teeth and spherical teeth respectively, so as to solve the problem of flexural deformation of the shaft when it is loaded.

[0018] Beneficial effects of the technical solution of the utility model:

[0019] The axial swing gear ring combined with a sealed bearing structure meets the use characteristics of the spherical bearing that can bear torque; the inner and outer gear rings are designed with spur teeth and spherical teeth to solve the problem of flexural deformation when the shaft is loaded; the inner and outer gear rings are designed differently to ensure that the bearing can achieve axial swing; the combined design of joints and gear rings can reduce manufacturing costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural diagram of the utility model.

[0021] Figure 2 This is a diagram of the use status of the bearing of the utility model.

[0022] Figure 3 for Figure 2 A partial enlarged view of .

[0023] Figure 4 for Figure 1 Partial detail diagram.

[0024] In the figure, 1, outer ring, 2, outer ring inner gear ring, 3, inner ring outer gear ring, 4, inner ring, 5, sealing assembly, 6, spur teeth, 7, spherical teeth, 8, sealing ring, 9, shaft, 10, outer ring connecting piece, 11, equipment parts. DETAILED DESCRIPTION

[0025] In order to make the above-mentioned purposes, features and advantages of the utility model more obvious and easy to understand, the specific implementation methods of the utility model are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the utility model. However, the utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the utility model, so the utility model is not limited by the specific embodiments disclosed below.

[0026] The specific embodiments of the bearing provided by the utility model are as follows:

[0027] like Figure 1-3 As shown, the joint and gear ring combined sealed bearing comprises: an outer ring unit and an inner ring unit, wherein a mutually meshing tooth structure is arranged between the inner periphery of the outer ring unit and the outer periphery of the inner ring unit; the mutually meshing tooth structure is arranged in the central area of ​​the inner periphery of the outer ring unit and the outer periphery of the inner ring unit; the inner periphery of the outer ring unit and the two end positions of the outer periphery of the inner ring unit are both mutually matched spherical surfaces; the outer ring unit is swung and sheathed outside the inner ring unit;

[0028] The two ends of the inner ring unit are respectively provided with extension parts of a certain length relative to the two ends of the outer ring unit, and the lengths of the extension parts at the two ends of the inner ring unit are different;

[0029] A sealing component 5 is provided at the junction of the outer diameter of the inner ring unit extension at one end of the bearing and the end face of the outer ring unit at that end. The side of the sealing component 5 in contact with the outer diameter of the inner ring unit is a spherical surface, which fits the outer diameter of the inner ring unit to ensure the sealing inside the bearing.

[0030] In this embodiment, the sealing assembly 5 is arranged at the end of the inner ring unit extension portion with a longer length;

[0031] The sealing assembly 5 adopts a combined structure with a steel frame inside and a rubber ring wrapped outside, which can play a sealing role while ensuring its strength;

[0032] The outer ring unit is a split assembly structure, including an outer ring 1 and an outer ring inner gear ring 2, the matching end faces of the outer ring 1 and the outer ring inner gear ring 2 are provided with concave and convex stoppers and a sealing ring 8, the outer ring 1 and the outer ring inner gear ring 2 are axially provided with through bolt holes, and the outer ring 1 and the outer ring inner gear ring 2 are fastened together by bolts;

[0033] The outer ring inner gear ring 2 is formed with a toothed area in the inner diameter direction of the outer ring, and the toothed area is connected to the outer ring by a key;

[0034] The outer surface of the tooth area of ​​the outer ring inner gear ring 2 is designed in the form of straight teeth 6;

[0035] The inner ring unit is a split assembly structure, including an inner ring 4 and an inner ring outer gear ring 3. The inner ring 4 and the inner ring outer gear ring 3 are provided with concave and convex stoppers and sealing rings 8 on their matching end faces. The inner ring outer gear ring 3 is provided with a through axial bolt hole from the outside to the inside. A matching axial bolt blind hole is provided on the end face of the inner ring 4 corresponding to the axial bolt hole. The inner ring 4 and the inner ring outer gear ring 3 are connected together through bolts.

[0036] The inner ring outer gear ring 3 is formed with a toothed area in the outer diameter direction of the inner ring, and the inside of the toothed area is connected to the inner ring by a key;

[0037] The outer surface of the tooth area of ​​the inner ring outer gear ring 3 is designed in the form of spherical teeth 7;

[0038] A plurality of sealing rings 8 are evenly arranged on the spherical surface area between the outer ring 1 and the inner ring 4 in the direction of the bearing sealing assembly 5; in the present embodiment, three sealing rings 8 are arranged, and the three sealing rings 8 are embedded in the grooves opened on the inner diameter spherical surface of the outer ring 1, and the three sealing rings 8 are fitted with the outer diameter spherical surface of the inner ring 4 to ensure the sealing performance.

[0039] As other embodiments of the above embodiments, the technical concept of the bearing of this scheme (consistent with the bearing structure of embodiment 1) applied to the TBM shield machine is that it also includes: a shaft 9 and an outer ring connector 10; one end of the shaft 9 in the shield machine is fixed to the equipment component 11, and the other end is a free end for connecting to the bearing; the inner ring unit of the bearing is inserted into the free end of the shaft 9; the end face of one end of the outer ring connector 10 is matched with the outer end face of the outer ring 1, and a connecting hole matching the bolt hole of the outer ring unit is opened on the outer ring connector 10, and the outer ring unit of the bearing is connected to the outer ring connector 10 by bolts; the inner diameter of the outer ring connector 10 is matched with the outer diameter of the bearing seal assembly 5.

[0040] When the above structure is in operation, since the bearing outer ring inner gear ring 2 and the inner ring outer gear ring 3 engage with each other, the bearing outer ring unit swings axially at a certain angle outside the inner ring unit; and the bearing outer ring inner gear ring 2 and the inner ring outer gear ring 3 respectively adopt different designs of straight teeth 6 and spherical teeth 7 to solve the problem of flexural deformation when the shaft is loaded.

[0041] After design calculation and analysis, the joint and gear ring combined sealed bearing structure of this solution is very good to use and meets the needs of the main engine.

[0042] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0043] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present utility model, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0044] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0045] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0046] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used herein are for illustrative purposes only and are not intended to be the only implementation method.

Claims

1. A joint and gear ring combined sealed bearing, characterized in that: include: The outer ring unit and the inner ring unit, a mutually meshing tooth structure is arranged between the inner periphery of the outer ring unit and the outer periphery of the inner ring unit; the mutually meshing tooth structure is arranged in the central area of ​​the inner periphery of the outer ring unit and the outer periphery of the inner ring unit; the inner periphery of the outer ring unit and the two end positions of the outer periphery of the inner ring unit are both mutually matching spherical surfaces; the outer ring unit is swingably mounted outside the inner ring unit; The outer ring unit is a split assembly structure, including an outer ring and an outer ring inner gear ring. The outer ring inner gear ring has a toothed area in the inner diameter direction of the outer ring. The matching end faces of the outer ring and the outer ring inner gear ring are provided with concave and convex stoppers and sealing rings. The outer ring and the outer ring inner gear ring are axially provided with through bolt holes. The outer ring and the outer ring inner gear ring are fastened together by bolts. The toothed area of ​​the outer ring inner gear ring is connected to the outer ring by a key connection. The outer surface of the toothed area of ​​the outer ring inner gear ring is designed to be in the form of straight teeth. The inner ring unit is a split assembly structure, including an inner ring and an inner ring outer gear ring, the inner ring outer gear ring has a tooth area in the outer diameter direction of the inner ring, the inner ring and the inner ring outer gear ring are matched with end faces provided with concave and convex stoppers and sealing rings, the inner ring outer gear ring is provided with a through axial bolt hole from the outside to the inside, and the inner ring end face corresponding to the axial bolt hole is provided with a matching axial bolt blind hole, the inner ring and the inner ring outer gear ring are connected together by bolts; the tooth area of ​​the inner ring outer gear ring is connected to the inner ring by a key; the outer surface of the tooth area of ​​the inner ring outer gear ring is designed as a spherical tooth form.

2. A joint and gear ring combined sealed bearing according to claim 1, characterized in that: Two ends of the inner ring unit are respectively provided with extension parts relative to two ends of the outer ring unit, and the extension parts at the two ends of the inner ring unit have different lengths.

3. A joint and gear ring combined sealed bearing according to claim 2, characterized in that: A sealing component is arranged at the junction of the outer diameter of the inner ring unit extension at one end and the end face of the outer ring unit at that end. The side of the sealing component in contact with the outer diameter of the inner ring unit is a spherical surface, which fits the outer diameter of the inner ring unit.

4. A joint and gear ring combined sealed bearing according to claim 3, characterized in that: Applied to TBM shield machines, it also includes: a shaft and an outer ring connector; one end of the shaft in the shield machine is fixed to the equipment component, and the other end is a free end for connecting to the bearing; the inner ring unit of the bearing is inserted into the free end of the shaft; the end face of one end of the outer ring connector matches the outer end face of the outer ring, and a connecting hole matching the bolt hole of the outer ring unit is opened on the outer ring connector, and the outer ring unit of the bearing is connected to the outer ring connector by bolts; the inner diameter of the outer ring connector matches the outer diameter of the bearing sealing assembly.

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