Loader gearbox shaft gear supporting structure
By setting left and right bushings on the loader gearbox shaft gear with interference fit to the gearbox housing and gearbox body, the problem of abnormal noise and axial movement caused by bearing outer race running was solved, realizing a low-cost and efficient maintenance solution.
Patent Information
- Application Number
- CN202423247757.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-27
- Publication Date
- 2025-11-07
- Estimated Expiration
- 2034-12-27
AI Technical Summary
The bearings at both ends of the gearbox shaft gear in existing loaders are prone to outer race slippage, which causes the bearing bore diameter to increase, resulting in abnormal noise and axial movement. This requires replacing the gearbox housing and casing, increasing maintenance costs and time.
The design employs an interference fit between the left and right bushings and the gearbox housing and gearbox body, respectively mates with the left and right bearings, thus avoiding the need to replace the gearbox housing and gearbox body; only the bushings need to be replaced for repair.
It reduces maintenance costs and time, improves maintenance efficiency, has a simple and compact structure, is easy to assemble, and is reliable in use.
Smart Images
Figure CN223524370U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to loader gearbox assembly technical field, concretely relates to loader gearbox axle gear support structure. BACKGROUND
[0002] The existing loader axle gear generally adopts the support structure that the left and right end bearings cooperate with the bearing hole arranged directly on the gearbox shell and the gearbox body. During the operation of the loader, the outer ring of the bearing at the two ends of the gearbox axle gear is prone to run out, which causes the diameter of the bearing hole arranged on the gearbox body and the gearbox shell to increase, resulting in excessive clearance between the bearing hole and the bearing and abnormal noise, and then the axial movement of the axle gear is prone to occur, and even the axle gear is damaged prematurely. In order to avoid the premature damage of the equipment, maintenance needs to be carried out in time. The defects of the loader gearbox axle gear support structure are that, due to the increase of the diameter of the bearing hole arranged on the gearbox body and the gearbox shell, the bearing at the two ends of the axle gear cannot be repaired by simply replacing the bearing, and the gearbox body and the gearbox shell need to be replaced to solve the problem, which greatly increases the maintenance cost and the maintenance time. SUMMARY
[0003] The utility model discloses a loader gearbox axle gear support structure with simple and compact structure, low maintenance cost and reliable use, to solve the problem that the bearing at the two ends of the axle gear of the existing loader gearbox needs to be replaced when the bearing hole increases due to the cooperation of the bearing at the two ends of the axle gear with the bearing hole arranged directly on the gearbox shell and the gearbox body.
[0004] To achieve the above purpose, the loader gearbox axle gear support structure comprises a gearbox shell 1, a left shaft sleeve 2, a left bearing 3, an axle gear 4, a gearbox body 5, a right bearing 6 and a right shaft sleeve 7. The left bearing 3 is installed at the left end of the axle gear 4, and the right bearing 6 is installed at the right end of the axle gear 4. The left shaft sleeve 2 is installed on the gearbox shell 1, the outer ring of the left shaft sleeve 2 is in interference fit with the gearbox shell 1, and the inner ring is in transition fit with the left bearing 3. The right shaft sleeve 7 is installed on the gearbox body 5, the outer ring is in interference fit with the gearbox body 5, and the inner ring is in transition fit with the right bearing 6.
[0005] The loader gearbox axle gear support structure has the following technical features and beneficial effects by arranging the left shaft sleeve 2 and the right shaft sleeve 7.
[0006] 1、When the outer ring of the bearing at both ends of the axle gear 4 runs, the transmission housing 1 and the transmission case 5 do not need to be replaced, and only the left shaft sleeve 2 provided on the transmission housing 1 and the right shaft sleeve 7 provided on the transmission case 5 need to be replaced to repair, which greatly reduces the maintenance cost and maintenance time, and obviously improves the maintenance efficiency; 2, simple and compact structure, easy to assemble, reliable to use. BRIEF DESCRIPTION OF DRAWINGS
[0007] Figure 1 is the main cross-sectional structure schematic diagram of the loader transmission axle gear support structure of the utility model.
[0008] The transmission housing 1, the left shaft sleeve 2, the left bearing 3, the axle gear 4, the transmission case 5, the right bearing 6 and the right shaft sleeve 7 are indicated. DETAILED DESCRIPTION
[0009] The specific embodiments of the loader transmission axle gear support structure of the utility model will be further described in detail in combination with the drawings.
[0010] Figure 1 The loader transmission axle gear support structure of the utility model includes the transmission housing 1, the left shaft sleeve 2, the left bearing 3, the axle gear 4, the transmission case 5, the right bearing 6 and the right shaft sleeve 7; the left bearing 3 is installed at the left end of the axle gear 4, and the right bearing 6 is installed at the right end of the axle gear 4; the left shaft sleeve 2 is installed on the transmission housing 1, the outer ring of the left shaft sleeve 2 is interference-fitted with the transmission housing 1, and the inner ring is transition-fitted with the left bearing 3; the right shaft sleeve 7 is installed on the transmission case 5, the outer ring is interference-fitted with the transmission case 5, and the inner ring is transition-fitted with the right bearing 6.
[0011] The loader transmission axle gear support structure can meet the requirement that when the outer ring of the bearing at both ends of the axle gear 4 runs, the transmission housing 1 and the transmission case 5 do not need to be replaced, and only the left shaft sleeve 2 provided on the transmission housing 1 and the right shaft sleeve 7 provided on the transmission case 5 need to be replaced to repair, which greatly reduces the maintenance cost and maintenance time, and obviously improves the maintenance efficiency.
Claims
1. A loader transmission axle gear support structure comprising a transmission housing (1), a left bearing (3), an axle gear (4), a transmission case (5) and a right bearing (6); the left bearing (3) is installed at the left end of the axle gear (4), and the right bearing (6) is installed at the right end of the axle gear (4); characterized in that: It also includes left shaft sleeve (2) and right shaft sleeve (7); The left shaft sleeve (2) is installed on the gearbox shell (1), the outer ring of the left shaft sleeve (2) is interference fit with the gearbox shell (1), and the inner ring is transition fit with the left bearing (3); The right shaft sleeve (7) is installed on the gearbox box (5), the outer ring of which is interference fit with the gearbox box (5), and the inner ring is transition fit with the right bearing (6).