Feed roller of forest harvesting machine based on negative Poisson's ratio structure
A technology of negative Poisson's ratio and feed rollers, which is applied in the field of feed rollers of combined forest harvesting machines, can solve the problems of weakening the overall strength and rigidity of feed rollers, less contact surface between feed rollers and felled wood, and problems caused by feed rollers. The complex force environment and other problems can be achieved to improve the integrity and stability, meet the force characteristics, and enhance the ability of shear deformation
Active Publication Date: 2022-01-07
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 feed roller of a combined forestry harvesting machine based on a negative Poisson's ratio structure. The feed roller teeth, the outer cover ring of the feed roller, and the double-V ear-attached negative Poisson's ratio filling are sequentially arranged from outside to inside along the radial direction. layer material and the feed roller hub; the double V ear-attached negative Poisson’s ratio filling layer material is located between the feed roller hub and the outer cover ring of the feed roller, and the double V ear-attached negative Poisson’s ratio filling layer material is consolidated on The hub of the feed roller and the base array of the teeth of the feed roller are arranged at the lug joints of the connected negative Poisson's ratio cells. The feed roller of the present invention combines the negative Poisson's ratio material and the cell structure, so that the feed roller has negative Poisson's ratio characteristics, compressibility, strength and stiffness under pressure enhancement characteristics in the radial and axial directions, thereby increasing The contact area between the circular working surface of the feeding roller and the felled wood is large, and a number of pairs of feeding roller teeth are added in the working surface to improve the production efficiency of the forest tree harvesting machine.
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...
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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