CN103918362A - Profiling bionic press roller - Google Patents

Abstract

The invention discloses a profiling bionic pressing roller, which aims to solve the shortcomings of the commonly used pressing rollers in the prior art, such as sticking soil on the surface of the roller, uneven compactness of the soil after pressing, and insufficient pressure of the pressing roller on the soil. A profiling and bionic pressing roller according to the present invention comprises a pressing roller and a central shaft, bionic shrapnel are distributed on the surface of the pressing roller, a collar is fixedly installed on the central shaft, and the gap between the collar and the bionic shrapnel is Elastic spokes are installed, and the bionic shrapnel on the roller is designed to imitate the contour shape of ostrich claws and toes and the contact process between claws and soil during ostrich running. It can effectively prevent the pressure roller from slipping, and rely on the expansion and contraction of the elastic spokes to perform ground profiling, which has a better effect on soil compaction and greater pressure; a layer of nylon layer formed by heat treatment on the surface of the pressure roller makes the pressure roller not sticky during the working process.

Description

A profiling bionic pressure roller

technical field

The invention belongs to a profiling and bionic pressing roller in the technical field of agricultural machinery.

Background technique

The pressure roller is a kind of agricultural machinery. Its function is to compact the soil after sowing, so as to increase the density of the soil to facilitate the maintenance of soil moisture and facilitate the germination and emergence of seeds. Before the application of pressure rollers, farmers stepped on the soil after planting and relied on the gravity of the human body to compact the soil. This method is inefficient and the soil compactness is uneven. People invented the pressure roller to replace the manual compaction of the soil after sowing. Present pressing roll is made up of roll frame and several rollers that are arranged on the roll frame, and the axis of its roller is perpendicular to the longitudinal axis of roll frame (ie the advancing direction of roll frame). During operation, the pressure roller is driven by traction machinery and rolls over the ridge platform after sowing, so that the soil is compacted by the gravity of the pressure roller itself and the external pressure. This kind of pressure roller has a phenomenon of sticking to the soil during operation, because the soil generally contains relatively large water when sowing, and such soil has a certain viscosity. When the pressure roller rolls over the soil, it is easy to stick to the soil and affect the quality of work. , the machine must be shut down to remove the soil adhered to the surface of the pressure roller. In order to solve the problem of sticking soil, people add a rubber jacket to the outside of the pressure roller. There is a certain gap between the rubber jacket and the roller body. When the roller rolls, the rubber jacket is constantly wriggling and deformed, so that the soil is not easy to stick to the jacket. This method has alleviated the degree of pressure roller sticking soil, but has following shortcoming: 1, rubber jacket has increased the cost of pressure roller; The pressure on the soil in the project is not enough.

Contents of the invention

The purpose of the present invention is to overcome the defects of sticky soil, uneven compaction of soil after compaction and insufficient pressure of the compaction roller on the soil in the commonly used compaction rollers, and provide a bionic compaction roller to reduce soil pressure. With the degree of adhesion of the suppression roller, the compactness of the soil after the suppression is uniform, and the purpose of increasing the pressure of the suppression roller to the soil, the technical scheme of the present invention is as follows:

A profiling bionic pressure roller according to the present invention comprises a pressure roller cylinder and a central shaft, and is characterized in that: bionic shrapnel are distributed on the surface of the pressure roller cylinder, and a collar is fixedly installed on the central shaft, and the collar and Elastic spokes are installed between the bionic shrapnel.

A further technical solution includes: the elastic spokes include a support rod, a sleeve, a baffle, a No. 1 spring and a No. 2 spring, the support rod extends into the upper end of the sleeve, and the bottom end of the support rod is connected to a cylindrical baffle in the sleeve Welded together, the two end faces of the baffle are welded with one end of No. 1 spring and No. 2 spring respectively, and the other ends of No. 1 spring and No. 2 spring are welded with the inner walls of the two end covers of the sleeve, and the support rod There is a through hole at the top, and a connecting rod is welded at the bottom of the sleeve, and the bottom end of the connecting rod also has a through hole.

The profile surface equation of the bionic shrapnel is formed by taking the equation y=-0.7571x ² -0.0857 as the prime line, the equation y=-0.0554z ² +0.0305z-0.0733 as the ridge line, and the prime line moves along the ridge line, Wherein: x is the axial direction of the roller, y is the normal direction of the roller surface, z is the tangential direction of the roller surface, and the origin is located on the roller surface.

The inner side of the bionic shrapnel is fixed with a lug, and the lug has a through hole for connecting with the support rod on the elastic spoke.

The bionic shrapnel is distributed on the surface of the pressure roller according to two trigonometric function curves, and the two trigonometric functions are symmetrical according to the centerline of the rolling direction of the pressure roller, and the curve equation is: y=Asin(6πx/D)+B, where : x represents the circumferential direction of the roller, y represents the normal direction to the surface of the roller, D is the diameter of the pressure roller, A and B are constants, and the value range of A is 50-100mm; the value range of B is 100-200mm.

There are six collars welded on the central shaft, which respectively correspond to the bionic shrapnel at the corresponding positions on the pressure roller. These six collars include four three-hole collars and two six-hole collars, each with three holes Three holes are machined on the collar, and they are evenly distributed. Each six-hole collar is machined with six holes, evenly distributed. In the circumferential direction of the collar, the first hole of the first six-hole collar is the same as the first hole. One hole of the first three-hole collar is at 30 degrees; the first hole of the second three-hole collar is at 60 degrees to one hole of the first three-hole collar, and the position of the hole of the third three-hole collar is The holes in the first three-hole collar are in the same positions as the holes in the first six-hole collar, the holes in the second six-hole collar are in the same positions as the first six-hole collar, and the fourth three-hole collar is in the same position as the first six-hole collar. A three-hole collar has the holes in the same location.

Compared with the prior art, the present invention has the following beneficial effects:

A profiling bionic pressure roller according to the present invention is aimed at the problem of severe clay on the surface and insufficient pressure on the soil during the working process of the pressure roller, and designs a bionic shrapnel structure and its arrangement and elastic spokes capable of ground profiling . The bionic shrapnel on the pressure roller is designed to imitate the contour shape of ostrich claws and toes and the contact process between the claws and the soil during the running process of the ostrich. The pressure roller slips; the elastic spokes capable of profiling the ground are directly connected with the bionic shrapnel, which changes the previous method of setting the ground profiling on the pressure roller frame, and makes the pressure roller frame and agricultural implements rigidly connected, relying on the expansion and contraction of the elastic spokes For ground profiling, compared with the former, the pressure roller has a better compaction effect on the soil and the pressure is greater; a layer of nylon layer formed by heat treatment on the surface of the pressure roller makes the pressure roller not clay during the working process.

Description of drawings

Fig. 1 is the axonometric projection diagram of a kind of profiling bionic pressure roller structure composition according to the present invention;

Fig. 2 is a left view of the structural composition of a profiling bionic pressure roller according to the present invention;

Fig. 3 is the front view of the elastic spokes adopted in a kind of profiling bionic pressure roller according to the present invention;

Fig. 4 is the axonometric projection diagram of the central axis adopted in a kind of profiling bionic pressure roller according to the present invention;

Fig. 5 is an expanded view of the arrangement of the trigonometric function curves of the bionic shrapnel provided in the bionic pressure roller according to the present invention;

Fig. 6 is a front view of the composition of the bionic shrapnel structure arranged on the bionic pressure roller according to the present invention;

Fig. 7 is a left view of the composition of the bionic shrapnel structure arranged on the bionic pressure roller according to the present invention;

Fig. 8 is a top view of the composition of the bionic shrapnel structure arranged on the bionic pressure roller according to the present invention;

Among them: 1. Central shaft, 2. Collar, 3. Elastic spoke, 4. Roller roller, 5. Lug, 6. Pin, 7. Support rod, 8. Sleeve, 9. Baffle plate, No. 10.1 Spring, No. 11.2 spring, 12. bionic shrapnel, 13. connecting rod, 14. six-hole collar, 15. three-hole collar.

Detailed ways

The present invention is described in detail below in conjunction with accompanying drawing:

Referring to Fig. 1 and Fig. 2, a profiled bionic pressure roller according to the present invention includes a central shaft 1, a pressure roller cylinder 4 and n elastic spokes 3 with the same structure.

The surface of the pressure roller 4 has a bionic shrapnel 12 that can increase the contact force between the pressure roller and the soil, and can play a role in fixing the soil. The bionic shrapnel 12 are arranged on the surface of the pressure roller 4 according to a trigonometric function curve. The equation is:

y=Asin(6πx/D)+B

Among them: x represents the circumferential direction of the roller, y represents the normal direction of the roller surface; A and B are constants, and the value range of A is 50-100mm; the value range of B is 100-200mm; D is the diameter of the pressure roller .

Moreover, the two trigonometric function curves are left-right symmetrical about the center line of the rolling direction of the pressure roller, as shown in Figure 5. This symmetrical arrangement can make the force of the pressure roller uniform and the work stable. The bionic shrapnel 12 on the pressure roller are distributed at the trough position, the center line position and the peak position of the trigonometric function curve. The bionic shrapnel 12 on the three positions are respectively located in the same plane as the corresponding collar 2, and the bionic shrapnel 12 passes through the The elastic spokes 3 are connected to the holes on the collar 2 in the radial direction, and the connection mode adopts a pin connection.

The arrangement of the bionic shrapnel 12 on the second trigonometric function curve and the connection of the bionic shrapnel 12 and the elastic spoke 3, and the arrangement of the bionic shrapnel 12 on the first trigonometric function curve and the connection of the bionic shrapnel 12 and the elastic spoke 3 are about The forward direction of the pressure roller is symmetrical, as shown in Figure 5. At the same time, a lug 5 is welded at the center of the ridge line of the bionic shrapnel 12, and a hole with a diameter of 6-18mm is machined axially at the center of the lug 5, and one end of the support rod 7 in the elastic spoke 3 is pinned to the lug 5. 6 connected so that the elastic spoke 3 and the lug 5 can rotate relatively. The bottom end of the connecting rod 13 in the elastic spoke 3 is connected with the collar 2 with the pin 6 equally, so that the elastic spoke 3 and the collar 2 can rotate relatively.

Referring to FIG. 3 , the elastic spoke 3 is composed of a support rod 7 , a sleeve 8 , a baffle 9 , a No. 1 spring 10 and a No. 2 spring 11 . One end of the support rod 7 is provided with a radial through hole, the diameter of the hole is the same as the diameter of the through hole on the collar 2, the other end of the support rod 7 is welded together with a circular baffle plate 9, and the support rod 7 and the baffle plate The axes of rotation of 9 are collinear, and the diameter of baffle plate 9 is smaller than the inner diameter of sleeve 8 . The two end faces of the baffle plate 9 are welded to one end face of No. 1 spring 10 and No. 2 spring 11 respectively, while the other ends of No. 1 spring 10 and No. 2 spring 11 are welded to the inner walls of the two end covers of the sleeve 8 The contact connection also adopts the fixed connection. One end of the support rod 7 connected to the baffle plate 9 stretches into the sleeve 8, so that when a certain load is applied to the elastic spokes 3, the support rod 7 can reciprocate under the elastic force of No. 1 spring 10 and No. 2 spring 11.

Referring to Fig. 4, six collars 2 are welded on the central shaft 1, respectively corresponding to the bionic shrapnel 12 at corresponding positions on the pressure roller 4, and these six collars 2 include four three-hole collars 15 and two A six-hole collar 14, three holes are processed on each three-hole collar 15, and are evenly distributed, and six holes are processed on each six-hole collar 14, evenly distributed, and satisfy: in the circumferential direction of the collar 2 Above, the first hole of the first six-hole collar 14 is at 30 degrees to one hole of the first three-hole collar 15; the first hole of the second three-hole collar 15 is at 30 degrees to the first three-hole collar One hole of the collar 15 is at 60 degrees, the position of the hole of the third three-hole collar 15 is the same as that of the first three-hole collar 15, and the position of the hole of the second six-hole collar 14 is the same as that of the first three-hole collar 15. The holes of the first six-hole collar 14 are in the same position and the fourth three-hole collar 15 is in the same position as the holes of the first three-hole collar 15 . All the holes on each collar 2 are the same size as the holes machined on the lugs 5 .

Referring to Fig. 5, the first three-hole collar 15 is connected with the three bionic shrapnel 12 located at the trough position of the first trigonometric function curve through three elastic spokes 3; the first six-hole collar 14 is connected by Six elastic spokes 3 are connected with six bionic shrapnel 12 located on the center line of the first trigonometric function curve; the second three-hole collar 15 is connected with the wave crest located on the first trigonometric function curve through three elastic spokes 3 The three bionic shrapnel 12 on the position are connected; the third three-hole collar 15 is connected with the three bionic shrapnel 12 on the trough position of the second trigonometric function curve through three elastic spokes 3; the second six-hole shaft The ring 14 is connected with the six bionic shrapnel 12 located on the center line of the second trigonometric function curve through six elastic spokes 3; the fourth three-hole collar 15 is connected with the second trigonometric function curve through three elastic spokes. The three bionic shrapnel 12 on the crest position are connected.

The profiled bionic pressing roller can adjust its structural size and increase or decrease the number of bionic shrapnel 12 and elastic spokes 3 according to needs.

Referring to Fig. 6 to Fig. 8, the present invention combines the geometric profile of the ostrich claw and the whole contact process between the claw and the soil during its running, and designs the geometric profile of the bionic shrapnel 12 by analyzing the profile of the ostrich claw and toe, and determines The contour surface equation of the bionic shrapnel 12 on the bionic pressure roller capable of profiling the ground according to the present invention. The contour surface equation of the bionic shrapnel 12 is formed by taking the equation y=-0.7571x ² -0.0857 as the prime line and the equation y=-0.0554z ² +0.0305z-0.0733 as the ridge line, and the prime line moves along the ridge line. The outline structure of the bionic shrapnel 12 is obtained by stamping, and the equation of the stamping opening curve formed on the surface of the pressure roller after stamping is:

$\left\{\begin{array}{c}\mathrm{<span\; class="notranslate">\; x</span>}<span\; class="notranslate">\; =</span>\mathrm{<span\; class="notranslate">\; 100</span>}\mathrm{<span\; class="notranslate">\; A</span>}\mathrm{<span\; class="notranslate">\; sin</span>}\mathrm{<span\; class="notranslate">\; \&theta;</span>}\\ \mathrm{<span\; class="notranslate">\; the\; y</span>}<span\; class="notranslate">\; =</span>\mathrm{<span\; class="notranslate">\; 30</span>}\mathrm{<span\; class="notranslate">\; A</span>}\mathrm{<span\; class="notranslate">\; sin</span>}\mathrm{<span\; class="notranslate">\; \&theta;</span>}\end{array}\right.$

Among them: A is a constant, the value range is 0.5-1.5; θ∈[0°,180°], x represents the tangential direction of the roller surface, and y represents the axial direction of the roller.

The distribution of the bionic shrapnel 12 of a profiled bionic pressure roller according to the present invention will be further described below in combination with two specific embodiments:

In order to prevent the surface of the pressure roller from sticking to the soil during operation, heat the pressure roller drum 4 to 140-260 degrees Celsius, then put it into a fluidized bed filled with nylon powder, take it out after cooling, and form a uniform thickness nylon on the surface layer. This treatment can not only prevent the pressure roller from sticking to soil during work, but also increase the wear resistance and toughness of the bionic shrapnel 12 . In addition, the bionic shrapnel 12 arranged according to the trigonometric function curve can also reduce the adhesion of the pressing roller to the soil.

The present invention designs a bionic pressure roller capable of ground profiling based on the geometric structure and parameters of ostrich claws, including the structure and arrangement of the bionic shrapnel 12 on the pressure roller drum 4 and the ground profiling mechanism of the pressure roller. The body structure of the ostrich is very suitable for running, and the speed is very fast. The ostrich feet can still hold the soil tightly during the fast running, thanks to its unique geometric structure of the claws and the interaction between the claws and the soil during running. This factor ensures that the ostrich can produce a good soil-holding and soil-fixing effect during the running process. Simultaneously, the mechanism of ground profiling is combined with the pressing roller cylinder 4, just as the leg of ostrich and the connection of foot, bigger pressure is produced to soil, makes it produce the effect of compacting soil better.

In order to solve the problem that most of the pressure rollers have insufficient pressure on the soil, the present invention adopts a profiling structure, that is, the elastic spokes 3 used to connect the pressure roller drum 4 and the central axis 1 are elongated or shortened with the undulation of the ground, just like an ostrich The legs generate a large force on the shrapnel during the working process, which increases the pressure of the pressure roller on the soil as a whole. Simultaneously, when the bionic shrapnel 12 is in contact with the soil, the bionic shrapnel 12 is compressed, and when the bionic shrapnel 12 leaves the soil, the bionic shrapnel 12 pops out under the action of the elastic spokes 3, which can shake off the soil on the pressing roller. The profiling principle is: the frame of the pressing roller is rigidly connected with the agricultural implements, and since the pressing roller drum 4 and the central shaft 1 are connected by elastic spokes 3, when encountering a raised ground, the pressure on the pressing roller surface increases , the compression degree of the elastic spokes 3 increases, and the central axis 1 of the pressure roller moves down relative to the pressure roller drum 4; The central axis 1 moves relative to the surface of the pressing roller. So as to achieve the effect of ground profiling.

Claims (6)

1. the bionical pack roller of profiling, comprise a pack roller roller (4) and a central shaft (1), it is characterized in that: pack roller roller (4) surface distributed has bionical shell fragment (12), on central shaft (1), be installed with the axle collar (2), between the axle collar (2) and bionical shell fragment (12), elastic spokes (3) be installed.

2. according to the bionical pack roller of a kind of profiling claimed in claim 1, it is characterized in that described elastic spokes (3) comprises support bar (7), sleeve (8), baffle plate (9), No. 1 spring (10) and No. 2 springs (11), support bar (7) stretches in sleeve (8), support bar (7) bottom and baffle plate (9) weld together, two end faces of baffle plate (9) weld together with one end of No. 1 spring (10) and No. 2 springs (11) respectively, the other end of No. 1 spring (10) and No. 2 springs (11) with the inwall welding of two end caps of sleeve (8), there is through hole on support bar (7) top, sleeve bottom welding has a connecting rod (13), connecting rod (13) bottom has through hole equally.

3. according to the bionical pack roller of a kind of profiling claimed in claim 1, it is characterized in that the contour surface equation of described bionical shell fragment (12) is with equation y=-0.7571x ²-0.0857 is plain line, with equation y=-0.0554z ²+ 0.0305z-0.0733 is crestal line, and plain line moves and forms along crestal line, wherein: the axis direction that x is roller, the normal direction that y is roller surface, the tangential direction that z is roller surface, initial point is positioned on roller surface.

4. according to the bionical pack roller of a kind of profiling claimed in claim 1, the inner side that it is characterized in that described bionical shell fragment (12) is fixed with lug (5), is provided with vertically the through hole for being connected with the support bar (7) in elastic spokes (3) on lug (5).

5. according to the bionical pack roller of a kind of profiling claimed in claim 1, it is characterized in that described bionical shell fragment (12) is surperficial according to two trigonometric function curve distribution at pack roller roller (4), article two, trigonometric function curve is arranged symmetrically with according to the median plane of pack roller roller (4) width, curvilinear equation is: y=Asin (6 π x/D)+B, wherein: x represents the circumferencial direction of roller, y represents the normal direction of roller surface; A, B are constant, and A span is 50-100mm; B span is 100-200mm; D is the diameter of pack roller.

6. according to the bionical pack roller of a kind of profiling claimed in claim 1, it is characterized in that, on described central shaft (1), be welded with six axle collars (2), the bionical shell fragment (12) of the upper relevant position of corresponding pack roller roller (4) respectively, these six axle collars (2) comprise four three hole axle collars (15) and two six hole axle collars (14), three holes of the upper processing of each three hole axle collars (15), and be uniformly distributed, six holes of the upper processing of each six hole axle collars (14), be uniformly distributed, on the circumferencial direction of the axle collar (2), a hole of first hole of first six holes axle collar (14) and first three holes axle collar (15) is 30 degree, first hole of second three hole axle collar (15) and a hole of first three holes axle collar (15) are 60 degree, the position in the hole of the 3rd the three hole axle collars (15) is identical with the position in the hole of first three holes axle collar (15), the position in the hole of second six hole axle collar (14) is identical with the position in the hole of first six holes axle collar (14), and the position of the 4th the three hole axle collars (15) is identical with the position in the hole of first three holes axle collar (15).