Forest combined harvester feeding roller based on negative Poisson's ratio structure
A negative Poisson's ratio and feeding roller technology is applied in the field of feeding rollers of combined forest harvesters, which can solve the problem of weakening the overall strength and rigidity of the feeding rollers, less contact surface between the feeding rollers and felling logs, and the The impact of felling trees and other problems can be improved to improve the integrity and stability, meet the force characteristics, and the force is uniform and stable.
Active Publication Date: 2020-02-28
BEIJING FORESTRY UNIVERSITY
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Problems solved by technology
[0004] However, the Chinese mainland patent application No. CN201420178943.9 discloses the wood feed roller structure of the combined logging machine, which is a purely mechanical shock-absorbing and buffering structure, subject to the influence of the compression spring stroke and spring stiffness, and the shock-absorbing and buffering effect is very limited. ; Its scheme of adding mechanical shock absorbing and buffering parts on the basis of the traditional feed roller structure weakens the overall strength and rigidity of the feed roller to a certain extent, and its mechanical shock absorbing structure requires regular maintenance, which further affects the feed roller. working life
And the elastic force exerted by the feed roller makes the stress environment of the feed roller more complicated, and the feed roller and felled wood will be subject to more serious impact
And this patent does not fundamentally solve the problem that the contact surface between the feed roller and the felled wood is less in the processing process
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[0032] The present invention will be further described in detail below through specific embodiments in conjunction with the accompanying drawings. The following examples are only descriptive, not restrictive, and cannot limit the protection scope of the present invention.
[0033] In the description of the present invention, it should be noted that the direction along the feed roller axis in the drawings is the axial direction, the circumferential direction is the circumferential direction, and the direction along the radius is the radial direction, and the diameter of the inner ring is smaller than the diameter of the outer ring. ", "bottom" and other orientation or position descriptive words are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or part referred to must have a specific orientation, be constructed and operated in a specific orientation, Therefore, it should not be co...
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The invention discloses a forest combined harvester feeding roller based on a negative Poisson's ratio structure. The forest combined harvester feeding roller sequentially comprises feeding roller teeth, a feeding roller outer covering ring, double V lug-attached type negative Poisson's ratio filling layer materials and a feeding roller hub in the radial direction from outside to inside, wherein the double V lug-attached type negative Poisson's ratio filling layer materials are located between the feeding roller hub and the feeding roller outer covering ring, the double V lug-attached negativePoisson's ratio filling layer materials are fixedly connected to the feeding roller hub, and a feeding roller tooth base array is arranged at the lug attachment joints of all groups of connected negative Poisson's ratio cells. According to the forest combined harvester feeding roller based on the negative Poisson's ratio structure, the negative Poisson's ratio materials and the cell structure arecombined, so that the feeding roller has negative Poisson 's ratio characteristics, compressibility, and strength and rigidity pressing strengthening characteristics in the radial direction and the axial direction, and then the contact area between the circumferential working surface of the feeding roller and fallen wood is increased; and a plurality of pairs of feeding roller teeth are added onthe working surface, and the production efficiency of a forest combined harvester is improved.
Description
technical field [0001] The invention relates to the field of forestry felling machinery, in particular to a feed roller of a combined forest harvesting machine based on a negative Poisson's ratio structure. Background technique [0002] The feed roller of the forestry harvesting machine widely used at present is a comprehensive implementation plan for the combined logging machine to replace manpower in the working process and improve production efficiency, but the circumferential working surface of the existing forestry harvesting machine feed roller is a straight tooth In the process of processing felled logs, due to the small contact surface between the circumferential working surface and the felled logs and the different diameters of the felled logs, the processed surface of the felled logs is unevenly processed or even damaged. In addition, because the feed rollers of the traditional forest harvesting machine are made of rigid materials and there are no shock-absorbing b...
Claims
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IPC IPC(8): B27B25/00
CPCB27B25/00
Inventor 王典王栋曲云飞黄青青刘晋浩
Owner BEIJING FORESTRY UNIVERSITY