Gear motor side plate with bidirectional support guide type combined sealing structure

Abstract

The invention discloses a gear motor side plate with a bidirectional support guide type combined sealing structure. The gear motor side plate comprises a side plate body, a sealing ring and a sealing barrier strip, wherein a sealing ring groove, two oil guiding grooves and four pressure-balance oil grooves are formed in the back surface of the side plate body; the sealing ring is embedded into the sealing ring groove; the two oil guiding grooves are respectively formed in the upper part and lower part of the sealing ring groove; the oil guiding grooves are communicated with the sealing ring groove; the four pressure-balance oil grooves are positioned in the left and right sides of the oil guiding grooves, and are positioned in the edge of the side plate body. The gear motor plate with the bidirectional support guide type combined sealing structure has the advantages that hydraulic oil pushing forces on the two end surfaces of the side plate are stable, the abrasion of the side plate is alleviated, the performance, reliability and service life of a gear motor are improved, the starting performance of the motor is promoted, and the like.

Description

technical field [0001] The invention relates to a side plate of a gear motor, in particular to a side plate of a gear motor provided with a bidirectional support-guided combined sealing structure. Background technique [0002] As the power component of the hydraulic system, the gear motor is widely used in the hydraulic system of construction machinery such as loaders, excavators, and cranes at home and abroad. The gear motor has the characteristics of simple structure, small size, light weight, strong self-priming force, and insensitivity to oil pollution. It is widely used in the field of hydraulic technology, especially in the construction machinery industry. [0003] At present, with the continuous improvement of the pressure level of the hydraulic motor, it faces the following problems. [0004] One is the radial force generated by the liquid pressure. This is because when the gear motor is working, the oil pressure in the oil discharge chamber is lower than the oil p...

AI Technical Summary

Problems solved by technology

[0005] The second is conventionally designed gear motors, which generally use integral compensation, but compensation cannot be performed in the low pressure area

Under high temperature, high pressure, and high impact working environment, the hydraulic pressure of the friction pair oil film between the side plate and the gear in the low pressure area is more uneven due to the hydraulic thrust on the back of the side plate

In order to ensure the volumetric efficiency of the conventional gear motor, only the compression amount of the seal is increased, so that the side plate and the tooth surface are partially bonded, which greatly reduces the mechanical efficiency of the gear motor

[0006] The third is the conventional gear motor seal, which mainly considers the increased compression of the seal to provide sealing performance. When the pressure area of ​​the bidirectional motor is constantly switched, it is impossible to ensure a suitable axial fit clearance of the gear motor under the condition of ensuring the seal. The low starting torque of the gear motor cannot be guaranteed under the axial fit clearance of the gear motor

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