Dustproof structure for output shaft of gearbox of loading machine
By designing the dust-proof structure of the ‘S’ type dust cover and C-shaped gap on the output shaft of the loader transmission, the problems of oil seal damage and oil leakage during shovel operation are solved, and the reliability and service life of the product are improved.
Patent Information
- Application Number
- CN202420209715.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-01-29
- Publication Date
- 2025-01-14
- Estimated Expiration
- 2034-01-29
AI Technical Summary
When the loader is operating the shovel, sand and gravel are prone to collision with the oil seal on the output shaft, resulting in damage to the oil seal and wear of the lip, causing oil leakage failure.
A dust-proof structure including an output shaft, a dust-proof cover, a box boss and an oil seal was designed. The dust-proof cover was 'S'-shaped, embedded in the oil seal hole of the box, and the outer cover was on the box boss to form a C-shaped gap, dust cover is installed through interference fit to avoid wear caused by welding fixation.
It effectively protects the oil seal, reduces the contact between dust and oil seal, improves the reliability and service life of the product, and avoids deformation and wear of the dust cover caused by welding and fixing.
Smart Images
Figure CN222351387U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a loader gearbox assembly, in particular to a dustproof structure of an output shaft of the loader gearbox. Background Art
[0002] The loader gearbox assembly is one of the core transmission components of the loader. It is a mechanism used to change the speed and torque from the engine, and it can change the transmission ratio between the input shaft and the output shaft. Loaders often operate in harsh working environments. Since the output shaft is located below the gearbox assembly and close to the ground, during the shoveling operation, sand and gravel can easily collide with the oil seal on the output shaft, causing dust to adhere to the oil seal lip. Long-term use will cause damage to the oil seal and wear of the lip, leading to oil leakage. Summary of the invention
[0003] The utility model aims to provide a loader gearbox output shaft dustproof structure which has a simple and compact structure, low manufacturing cost, simple and convenient assembly and reliable use, so as to solve the problem that the loader in the prior art is damaged by sand and gravel colliding with the output shaft oil seal during shoveling operation and causes oil leakage due to lip wear.
[0004] To achieve the above purpose, the utility model loader gearbox output shaft dustproof structure includes an output shaft 1, a dust cover 3, a box body 5 with a box body boss 4, and an oil seal 6; the oil seal 6 is installed on the box body 5, and the inner ring of the oil seal 6 is installed on the output shaft 1; the dust cover 3 is "S"-shaped, and the dust cover 3 is installed on the left side of the output shaft 1 through an interference fit, and the inner side of the dust cover 3 is embedded in the oil seal hole of the box body 5, and the outer side of the dust cover 3 is covered on the left side of the box body boss 4, so that a C-shaped gap 2 is formed between the dust cover 3 and the box body 5.
[0005] The utility model loader gearbox output shaft dustproof structure has the following technical features and beneficial effects:
[0006] 1. The setting of the dust cover 3 prevents the sand and gravel in the loader's shoveling process from colliding with the output shaft oil seal, which greatly protects the oil seal and improves product quality.
[0007] 2. The dust cover 3 is "S" shaped, with the inner side of the dust cover 3 embedded in the oil seal hole of the box body 4, and the outer side of the dust cover 3 covering the left side of the box body boss 4, so that the dust cover 3 and the box body 5 form a C-shaped gap 2, which effectively reduces the contact amount between dust and oil seal and greatly improves the reliability of product use.
[0008] 3. The dust cover 3 is installed on the left side of the output shaft 1 by interference fit, which can avoid welding and fixing the dust cover, causing the dust cover to be deformed, effectively prevent interference wear between the dust cover 3 and the housing boss 4, and greatly improve product reliability. BRIEF DESCRIPTION OF THE DRAWINGS
[0009] Figure 1 The utility model is a schematic diagram of the main cross-sectional structure of the dustproof structure of the output shaft of a loader gearbox.
[0010] Reference numerals: output shaft 1, C-shaped gap 2, dust cover 3, housing boss 4, housing 5, oil seal 6. DETAILED DESCRIPTION
[0011] The specific implementation of the dust-proof structure for the output shaft of a loader gearbox of the present invention will be further described in detail below in conjunction with the accompanying drawings.
[0012] Figure 1 As shown, the utility model loader gearbox output shaft dustproof structure comprises an output shaft 1, a dust cover 3, a housing 5 with a housing boss 4, and an oil seal 6; the oil seal 6 is mounted on the housing 5, and the inner ring of the oil seal 6 is mounted on the output shaft 1; the dust cover 3 is "S"-shaped, and is mounted on the left side of the output shaft 1 by interference fit, and the inner side of the dust cover 3 is embedded in the oil seal hole of the housing 5, and the outer side of the dust cover 3 is covered on the left side of the housing boss 4, so that a C-shaped gap 2 is formed between the dust cover 3 and the housing 5; the setting of the dust cover 3 prevents the loader from sand and gravel colliding with the output shaft oil seal during shoveling operation, effectively protects the oil seal, and reduces the contact amount between dust and the oil seal, and the interference fit installation can avoid the interference wear between the dust cover 3 and the housing boss 4 caused by the welding deformation of the dust cover due to the welding and fixing of the dust cover, thereby greatly improving the product reliability.
[0013] The dustproof structure of the output shaft of the loader gearbox adopts the above structure, which solves the problem in the prior art that because the output shaft is close to the ground, sand and gravel are easy to collide with the oil seal on the output shaft during the loader's shoveling operation, and dust will adhere to the oil seal lip. Long-term use will cause damage to the oil seal and wear of the lip, resulting in oil leakage.
Claims
1. A dustproof structure for the output shaft of a loader gearbox, comprising an output shaft (1), a housing (5) with a housing boss (4), and an oil seal (6); the oil seal (6) is mounted on the housing (5), and the inner ring of the oil seal (6) is mounted on the output shaft (1); the characteristics are: It also includes a dust cover (3); the dust cover (3) is in an "S" shape, and is installed on the left side of the output shaft (1) through interference fit, and the inner side of the dust cover (3) is embedded in the oil seal hole of the box body (5), and the outer side of the dust cover (3) is covered on the left side of the box body boss (4), so that a C-shaped gap (2) is formed between the dust cover (3) and the box body (5).