Self propelled impact rollers are currently one of the development directions of impact roller technology.
Self propelled impact roller refers to an integral impact roller. The traction machinery and impact roller are integral structures, which are different from the commonly used separate structures of impact roller traction vehicle and impact roller.
South Africa has developed a self-propelled impact roller (see figure above) and has been used in road construction.
At present, China Machinery Group, a leading domestic enterprise in the field of impact rollers, is also starting to develop and produce self-propelled impact rollers. We hope to start production as soon as possible. Interested friends can contact us.
From the perspective of design structure, the self-propelled impact roller lacks two driving wheels, and its walking chassis is hinged with the impact compaction machine frame. The overall length of the machine is shortened, the turning radius is reduced, and the required turning sections are greatly reduced, making its advantages very obvious. After the turning radius is reduced, the requirements for the width of the site are reduced, and the cost of transferring and shipping is also reduced.
Moreover, the self-propelled impact roller brings great convenience to the construction of short circuits and narrow roads that are inconvenient to turn when driving backwards (raising the impact compaction wheel off the ground).
Self propelled impact rollers have many advantages, but their technical requirements are also high. The main technical characteristics are as follows:
During operation, the traction work device transfers a certain load to the driving wheel, increasing the attached weight on the driving wheel, in order to generate sufficient driving force.
In terms of design requirements, the articulation between the driving chassis and the working device is three degrees of freedom.
There must be hydraulic and aeroelastic damping devices in the Z direction perpendicular to the ground, that is, the full hydraulic configuration of the impact roller must be used to avoid transmitting intense vibration to the driver's seat.
A hydraulic or mechanical shock absorber should be installed in the X direction of the forward direction of the impact roller to reduce the impact of periodic movement of the working device on the driving stability and comfort of the unit.
The walking chassis of the self-propelled impact roller is hinged with the impact compaction machine frame, and the absence of two driving wheels is equivalent to the absence of a layer of shock absorption and relief. Therefore, it is particularly necessary to strengthen the quality control of specialized mechanical shock absorbers.
The design contour curve of the impact compaction wheel should meet the requirement of obtaining a large acceleration during falling (such as selecting the fastest descent line cycloid), and the acceleration level value should be reduced to increase compaction efficiency.
There are different compartments inside the impact compaction wheel, and under special conditions, the weight can be added to adjust the quality of the impact wheel to change the range of impact force and achieve the ideal impact compaction effect.
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