Electric loader gearbox intermediate shaft assembly

Abstract

This utility model discloses an intermediate shaft assembly for an electric loader gearbox, comprising cylindrical roller bearings, a spacer, a gear, and a shaft gear. The gear has an inner stop for positioning on the minor diameter of its internal spline. The spacer is located on the left side of the gear, and a cylindrical roller bearing is located on the left side of the spacer and at the other end of the shaft gear. The shaft gear has an outer stop for positioning on the right side of its external spline. The gear and shaft gear are connected by an involute spline, and are aligned and centered using the inner stop of the gear and the outer stop of the shaft gear to ensure coaxiality. This utility model has a simple and compact structure, high coaxiality between the intermediate shaft gear and shaft gear, and smooth meshing transmission. It solves the problem of abnormal noise in the gearbox during meshing transmission caused by reduced centering accuracy of the spline teeth due to heat treatment deformation of the involute spline connecting the intermediate shaft gear and shaft gear.

Description

Technical Field

[0001] This utility model relates to the technical field of electric loader gearbox structure, specifically to the intermediate shaft assembly of an electric loader gearbox. Background Technology

[0002] With the development of new energy technologies, electric loaders are gradually increasing their market share in the loader industry. Compared with conventional fuel-powered loaders, electric loader drive motors have the characteristics of high speed and low noise. Therefore, the noise requirements for electric loader transmissions are higher than those for conventional fuel-powered transmissions. In the existing intermediate shaft assembly of electric loader transmissions, the gears on the intermediate shaft and the shaft gears are generally connected by involute splines. The defect of this intermediate shaft assembly structure is that the involute splines deform after heat treatment, causing a decrease in the centering accuracy of the spline teeth, resulting in abnormal noise from the transmission during gear meshing. Summary of the Invention

[0003] The purpose of this invention is to provide an electric loader gearbox intermediate shaft assembly with a simple and compact structure, high coaxiality between the intermediate shaft gear and the shaft gear, and smooth meshing transmission. This solves the problem of abnormal noise in the gearbox during meshing transmission caused by the reduced centering accuracy of the spline tooth profile due to heat treatment deformation of the involute spline connecting the intermediate shaft gear and the shaft gear.

[0004] To achieve the above objectives, the intermediate shaft assembly of the electric loader gearbox of this utility model includes a cylindrical roller bearing 1, a spacer 2, a gear 3, and a shaft gear 4; the gear 3 has an inner stop 3.1 for positioning on the small diameter of the inner spline on the right side; the spacer 2 is located on the left side of the gear 3, and a cylindrical roller bearing 1 is respectively provided on the left side of the spacer 2 and the other end of the shaft gear 4; the shaft gear 4 has an outer stop 4.1 for positioning on the right side of the outer spline; the gear 3 and the shaft gear 4 are connected by an involute spline, and are aligned and centered by the inner stop 3.1 of the gear 3 and the outer stop 4.1 of the shaft gear 4 to ensure the coaxiality of the gear 3 and the shaft gear 4.

[0005] The aforementioned electric loader gearbox intermediate shaft assembly, through structural optimization, possesses the following technical features and beneficial effects:

[0006] An internal stop for positioning is provided on the right minor diameter of the internal spline of the gear, and an external stop for positioning is provided on the right side of the external spline of the shaft gear. The centering is calibrated by both, ensuring the coaxiality of the gear and the shaft gear. It has the characteristics of simple and compact structure and high centering accuracy. It effectively solves the problem of abnormal noise in the gearbox during meshing transmission caused by the decrease in the centering accuracy of the spline tooth profile due to heat treatment deformation of the involute spline in the existing technology. Attached Figure Description

[0007] Figure 1 This is a schematic diagram of the intermediate shaft assembly of the electric loader gearbox of this utility model.

[0008] Figure 2 This is a schematic diagram of a gear.

[0009] Figure 3 This is a schematic diagram of the shaft gear.

[0010] Reference numerals: 1. Cylindrical roller bearing; 2. Spacer; 3. Gear; 3.1. Inner stop; 4. Shaft gear; 4.1. Detailed Implementation

[0011] The structure of the intermediate shaft assembly of the electric loader gearbox of this utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0012] Figures 1-3 As shown, the intermediate shaft assembly of the electric loader gearbox of this utility model includes a cylindrical roller bearing 1, a spacer 2, a gear 3, and a shaft gear 4; the gear 3 has an inner stop 3.1 for positioning on the small diameter of the inner spline on the right side; the spacer 2 is located on the left side of the gear 3, and a cylindrical roller bearing 1 is respectively provided on the left side of the spacer 2 and the other end of the shaft gear 4; the shaft gear 4 has an outer stop 4.1 for positioning on the right side of the outer spline; the gear 3 and the shaft gear 4 are connected by an involute spline, and are aligned and centered by the inner stop 3.1 of the gear 3 and the outer stop 4.1 of the shaft gear 4 to ensure the coaxiality of the gear 3 and the shaft gear 4.

[0013] This utility model of the intermediate shaft assembly of an electric loader gearbox ensures the coaxiality of the gear and the shaft gear by setting an inner stop 3.1 on the gear 3 and an outer stop 4.1 on the shaft gear 4. It has a simple and compact structure, high centering accuracy between the intermediate shaft gear and the shaft gear, and smooth meshing transmission. It solves the problem of abnormal noise in the gearbox during meshing transmission caused by the deformation of the involute spline of the gear connecting the intermediate shaft and the shaft gear due to heat treatment, which reduces the centering accuracy of the spline tooth profile.

Claims

1. A power loader gearbox intermediate shaft assembly, comprising cylindrical roller bearings (1), spacers (2), gears (3) and shaft gears (4); the spacers (2) are arranged on the left side of the gears (3), and one cylindrical roller bearing (1) is arranged on the left side of each spacer (2) and the other end of the shaft gear (4) respectively; characterized in that, The gear (3) has an inner stop (3.1) for positioning on the minor diameter of the inner spline on the right side; the shaft gear (4) has an outer stop (4.1) for positioning on the right side of the outer spline on the right side; the gear (3) and the shaft gear (4) are connected by an involute spline, and are aligned and centered by the inner stop (3.1) of the gear (3) and the outer stop (4.1) of the shaft gear (4) to ensure the coaxiality of the gear (3) and the shaft gear (4).

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