Triangular crawler-type walking device with adjustable ground clearance

Abstract

The invention provides a triangular crawler-type walking device with adjustable ground clearance. The triangular crawler-type walking device comprises a crawler, a driving wheel, a support, a guide wheel, a tensioning wheel, thrust wheel sets, a central thrust wheel, swing arms, lifting hydraulic oil cylinders and a tension device, wherein the central thrust wheel is arranged at the bottom of thesupport, and the thrust wheel sets are arranged at the two sides of the central thrust wheel; one end of each swing arm is hinged to a trolley shaft of the corresponding thrust wheel set, the other end of each swing arm is connected with a piston rod of the corresponding lifting hydraulic oil cylinder, the lifting hydraulic oil cylinders are fixed to the support, and springs are installed betweenthe swing arms and the support to support the swing arms; the rubber crawler sleeves the driving wheel, the tensioning wheel, the guide wheel and the thrust wheel to form the triangular crawler-type walking device. The ground clearance is changed by contracting and extending the piston rods of the lifting hydraulic oil cylinders, and crawler tensioning is adjusted by synchronously contracting andextending a piston rod of a tensioning hydraulic oil cylinder.

Description

technical field [0001] The invention relates to the technical field of crawler tractors, in particular to a triangular crawler-type traveling device with adjustable ground clearance. Background technique [0002] my country's paddy field area is about 30 million hectares, the largest in the world, and more than 75% of the area is planted with rice. At present, wheeled tractors are mainly used in paddy field operations, which are prone to slipping and trapping during operation, which delays farming time. After multiple operations of wheeled tractors, the mud feet in paddy fields deepen, and low-power tractors cannot work. We can only increase the power of implements to further deepen the mud. foot, resulting in a vicious circle of "the deeper the mud foot, the greater the power of the machine tool, and the deeper the mud foot". Crawler tractors have high traction force and low ground pressure, making them suitable for paddy field operations. However, common crawler tractors ...

AI Technical Summary

Problems solved by technology

At present, wheeled tractors are mainly used in paddy field operations, which are prone to slipping and trapping during operation, which delays farming time. After multiple operations of wheeled tractors, the mud feet in paddy fields deepen, and low-power tractors cannot work. We can only increase the power of implements to further deepen the mud. feet, resulting in a vicious cycle of "the deeper the mud foot, the greater the power of the machine tool, and the deeper the mud foot"

Crawler tractors have large traction force and low ground pressure, which is suitable for paddy field operations. However, the common crawler tractors on the market have low ground clearance and cannot meet the operation requirements of different rice growth periods.

The patent application number is 201610731288.9, and the name is a paddy field crawler tractor. It discloses a paddy field crawler tractor. , Tensioning device, the guide wheel is installed at the front end of the tensioning device, the rubber track is wrapped around the guide wheel, the front roller, the rear guide wheel and the driving wheel, the front roller is installed at the lower part of the driving frame, and the balance trolley passes through the platform The axle is installed in the swing-type trolley mounting bracket, the rear guide wheel is connected to the rear end of the driving frame, the driving wheel is connected to the end half shaft through splines, and the tensioning device is installed in the tensioning device fixing device, although it also forms Triangular layout, but the ground clearance of the traveling mechanism is fixed. If the ground clearance design is too high, the operation requirements such as plow and rotary tillage that require large traction cannot be implemented after the center of gravity is high. If the ground clearance design is too low, it cannot meet the requirements. Requirements for light operations such as intertillage, fertilization and pesticide application in the middle and late stages of rice growth

The patent application number is 201510584570.4, and the name is a light crawler tractor. It discloses a light crawler tractor. Wheels and supporting rollers are set on the inner side of the track, and the guide wheel is installed on the tensioning device. The tractor is light in weight and has a strong load-bearing capacity, but the forward inclination angle of the track of the traveling mechanism is small, the profiling ability is insufficient, and the ability to cross the ditch and the ridge is weak. , also because the ground clearance cannot be adjusted, it is difficult to meet the different operation needs of paddy fields

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