Transfer case bearing mounting structure

Abstract

The utility model discloses a transfer case bearing mounting structure, which is characterized in that a cylindrical cavity for fixing a bearing along the circumferential direction is formed on a shell, the depth of the cylindrical cavity is larger than the height of the bearing, a bearing seat for supporting the end part of the bearing is arranged in the cylindrical cavity, and the bearing seat is provided with a bearing hole. The bearing seat comprises a bottom wall used for being connected in the cylindrical cavity in a sleeved mode and a column foot used for being connected with the end of the bearing in an abutting mode, and the outer diameter of the column foot is smaller than that of the bottom wall. In the utility model, the bearing seat and the shell are of a split structure, the processing difficulty of the shell is reduced, the maintenance is facilitated, the bearing seat is of an asymmetric structure, one end surface is matched with the shell and is convenient to install, the diameter of the other end surface is reduced to abut against the end part of the bearing, and a space is reserved for introducing lubricating oil.

Description

Technical Field

[0001] The utility model relates to a transmission structure, in particular to a transfer case bearing installation structure. Background Art

[0002] The bearing seat is a base used to support the bearing and fixed outside the bearing. Its main function is to bear the external force of the bearing and the rotating shaft installed with the bearing. In the engineering machinery industry, the bearing seat is one of the important mechanical performance parts of the engineering machinery transfer case. Its quality and performance have an important impact on the operating efficiency and service life of the entire equipment. In the existing transfer cases, such as Figure 1 As shown, the housing 1 is integrally formed with a cylindrical hole to form a bearing seat, and the bearing 2 is installed in the cylindrical hole so that the bearing is fixed and supported, which helps to reduce parts, and the input gear 3 is installed through the bearing 2. However, the processing difficulty in this structure is relatively large. Once a failure occurs, damage occurs, or replacement is required, the entire housing needs to be replaced, and the maintenance cost is high. During maintenance, it is difficult to disassemble structures such as bearings and transmission shafts. The utility model patent application with publication number CN 211315050U discloses a reducer, in which a mounting cylinder is provided in the transmission cavity along the direction of the bearing hole toward the port, and a mounting channel is provided in the mounting cylinder. A bearing seat is installed in the mounting channel, and the bearing seat is separately provided from the housing, and the bearing seat is disc-shaped. This solution helps to reduce the difficulty of housing processing, but is not conducive to bearing lubrication. Utility Model Content

[0003] Purpose of the utility model: The purpose of the utility model is to provide a transfer case bearing installation structure which is easy to maintain and takes lubrication into consideration.

[0004] Technical solution: The utility model describes a transfer case bearing mounting structure, wherein a cylindrical cavity for fixing the bearing along the circumferential direction is formed on the shell, and is characterized in that the depth of the cylindrical cavity is greater than the height of the bearing, and a detachable bearing seat for supporting the end of the bearing is provided in the cylindrical cavity, and the bearing seat includes a bottom wall for being sleeved in the cylindrical cavity and a column foot for abutting the end of the bearing, and the outer diameter of the column foot is smaller than the outer diameter of the bottom wall.

[0005] In the utility model, the bearing seat and the shell are of a split structure, which reduces the difficulty of shell processing and is conducive to repair and maintenance. The bearing seat is an asymmetric structure, one end face cooperates with the shell for easy installation, and the other end face has a reduced diameter to abut the end of the bearing, leaving space for the introduction of lubricating oil.

[0006] Preferably, in order to facilitate the removal of the bearing seat, a circular hole is opened in the center of the bottom.

[0007] Preferably, the circular hole is stepped, and the inner diameter is not less than 10 mm.

[0008] Preferably, in order to effectively provide lubricating oil to the bearing, the column foot is provided with oil holes in the circumference.

[0009] Preferably, the oil holes are evenly distributed, the number of which is not less than 3, and the oil holes are tangent to the bottom wall.

[0010] Preferably, the outer diameter of the bottom wall is consistent with the outer diameter of the bearing.

[0011] Preferably, the bottom wall thickness is not less than 7 mm, and the column foot height is not less than 9 mm.

[0012] Beneficial effects: Compared with the prior art, the utility model has the following advantages: 1. Easy maintenance and installation: the bearing seat and the housing are separated, and only the bearing needs to be repaired, and the bearing seat can be installed by placing it into the housing; 2. Easy to introduce lubricating oil; 3. Easy to disassemble: there is a through hole on the bearing seat, which can be disassembled by cooperating with existing tooling. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 The figure is a schematic diagram of the transfer case bearing installation structure in the prior art.

[0014] Figure 2 The utility model is a schematic diagram of the transfer case bearing installation structure.

[0015] Figure 3 It is the front view and cross-sectional view of the bearing seat of the utility model. DETAILED DESCRIPTION

[0016] The technical solution of the utility model is further described below in conjunction with the accompanying drawings.

[0017] like Figure 2 The figure shows a cross-sectional view of the transfer case bearing installation structure of the utility model, wherein a cylindrical hole is integrally formed on the side of the housing 1, and the cylindrical hole is used to fix the bearing 3 in the circumferential direction, and the depth of the cylindrical hole is greater than the height of the bearing 3, and a bearing seat 2 is installed between the housing 1 and the bearing 3, and the bearing seat 2 is mounted in the cylindrical hole, and the two ends are respectively matched with the cylindrical hole and the bearing 2, wherein the end installed with the cylindrical hole is the bottom wall, and the outer diameter is the same as the inner diameter of the cylindrical hole, so that the bearing seat 2 can be stably installed in the cylindrical hole, and the end abutting against the bearing 3 is a column foot, and the outer diameter of the column foot is smaller than the outer diameter of the bottom wall, and the end of the column foot abuts against the bearing 3, so that the bearing 3 is axially fixed.

[0018] like Figure 3As shown, the bottom wall thickness of the bearing seat 2 is greater than 7mm, and there is a round hole in the center. The tool can be inserted into the round hole to pull it out. It is easy to install, easy to disassemble or replace the bearing, and easy to maintain. It is suitable for occasions where the bearing installation is more troublesome or needs to be replaced frequently, reducing the workload and maintenance costs and improving work efficiency. The round hole is a stepped through hole, with an inner diameter of 10mm in the first section and an inner diameter of 11mm in the second section. The column foot height of the bearing seat 2 is not less than 9mm, and there are evenly distributed oil holes in the circumference. The number of oil holes is not less than 3, the inner diameter of the oil holes is about 8mm, and the bottom wall surface is tangent to provide a lubrication oil path for the bearing. Compared with the integral bearing seat, the lubrication effect is better.

Claims

1. A transfer case bearing mounting structure, comprising a housing (1), wherein the housing (1) is formed with a cylindrical cavity for fixing the bearing in a circumferential direction, and wherein: The depth of the cylindrical cavity is greater than the height of the bearing (3); a detachable bearing seat (2) for supporting the end of the bearing is provided in the cylindrical cavity; the bearing seat comprises a bottom wall for sleeved in the cylindrical cavity and a column foot for abutting the end of the bearing; the outer diameter of the column foot is smaller than the outer diameter of the bottom wall.

2. The transfer case bearing mounting structure according to claim 1, characterized in that: A circular hole is provided at the center of the bottom wall.

3. The transfer case bearing mounting structure according to claim 2, characterized in that: The circular hole is stepped, and the inner diameter is not less than 10 mm.

4. The transfer case bearing mounting structure according to claim 1, characterized in that: The column foot is provided with oil holes in the circumference.

5. The transfer case bearing mounting structure according to claim 4, characterized in that: The oil holes are evenly distributed and the number is not less than 3.

6. The transfer case bearing mounting structure according to claim 1, characterized in that: The outer diameter of the bottom wall is consistent with the outer diameter of the bearing.

7. The transfer case bearing mounting structure according to claim 1, characterized in that: The bottom wall thickness is not less than 7 mm, and the column foot height is not less than 9 mm.

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