Terrain-clearance-adjustable vibration attenuation type caterpillar band drive mechanism

Abstract

The invention provides a terrain-clearance-adjustable vibration attenuation type caterpillar band drive mechanism. A drive wheel is arranged at one end of an upper trolley frame assembly, the other end of the upper trolley frame assembly is provided with a caterpillar band adjuster used for being connected with a rear supporting wheel assembly, load bearing wheel assemblies are arranged on a lowertrolley frame assembly, shock absorbers, hydraulic cylinder assemblies and trolley frame supporting frame assemblies are arranged between the upper trolley frame assembly and the lower trolley frameassembly, and the drive wheel, a rear supporting wheel assembly and the load bearing wheel assemblies are sleeved with a caterpillar band. In the lifting process of the caterpillar band drive mechanism, the caterpillar band traveling height changes, the caterpillar band surrounding perimeter does not change, the position of a rear supporting wheel is automatically adjusted in real time, and the caterpillar band can be effectively prevented from falling. Meanwhile, hydraulic cylinders ascend and descend to drive an upper trolley frame and a lower trolley frame to ascend and descend, the relative positions of load bearing wheels and the lower trolley frame do not change, relative motion elements are few, the caterpillar band height is adjusted simply, and reliability is high. Hydraulic cylinder springs are installed between the hydraulic cylinders and the lower trolley frame, the caterpillar band can be adjusted at any height in the lifting range, and a vibration attenuation function isachieved.

Description

technical field [0001] The invention relates to the technical field of crawler belt drive, in particular to a vibration-absorbing crawler belt drive mechanism with adjustable height from the ground. Background technique [0002] Tracked vehicles have a large grounding area and low grounding specific pressure, and can work in relatively harsh environments. However, the ground clearance and center of gravity height of tracked vehicles have a great impact on their passability and safety. The ground clearance is low, and the passage of tracked vehicles If the performance is poor, the advantages of tracked vehicles cannot be fully utilized; if the ground clearance is large, the center of gravity of tracked vehicles will be high, and rollover will easily occur when driving on slopes or turning quickly, which will affect driving safety. At the same time, due to the complex structure of the crawler driving system, the tracked vehicle mainly adopts the direct drive shaft transmission...

AI Technical Summary

Problems solved by technology

[0002] Tracked vehicles have a large grounding area and low grounding specific pressure, and can work in relatively harsh environments. However, the ground clearance and center of gravity height of tracked vehicles have a great impact on their passability and safety. The ground clearance is low, and the passage of tracked vehicles The performance of tracked vehicles is poor, and the advantages of tracked vehicles cannot be fully utilized; if the ground clearance is large, the center of gravity of tracked vehicles is likely to be high, and rollover is prone to occur when driving on slopes or turning quickly, which will affect driving safety.

At the same time, due to the complex structure of the crawler driving system, the tracked vehicle mainly adopts the direct drive shaft transmission mode, and the track and the tracked vehicle are not directly provided with a suspension, which makes it difficult to adjust the height of the tracked vehicle. The mass of the system is very large. After setting the suspension, the unsprung mass is high, which leads to poor transmission effect. However, if elastic or semi-rigid elastic devices are installed inside the tracked driving system, it is also difficult to achieve height adjustment.

For tracked vehicles equipped with elastic suspensions, although the ride comfort is improved by setting elastic elements, the reliability is better on engineering machinery or armored vehicles with heavy vehicle weight and metal tracks, but the vehicle weight On a farmland operation vehicle that is light and uses rubber tracks, the tracked driving system with elastic elements can easily lead to track slipping failures

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