A mixed-knife segmented double-helix powder ridge cutter

Abstract

A mixed blade segmented double spiral powder ridge cutter, relates to the technical field of agricultural machinery, and comprises a left powder ridge cutter and a right powder ridge cutter of the same structure, the two cutters are installed at 90° offset, each cutter comprises a cylindrical cutter shaft, a partially hollow segmented spiral blade surrounded by the cutter shaft surface, powder ridge blades arranged on the blades, a middle curved blade placed on the cutter shaft at the blade break, and an upper curved blade evenly arranged at the upper end of the cutter shaft, and the cutter shaft below the middle curved blade is a disconnected cutter shaft. The invention can effectively reduce the power consumption of powder ridge deep loosening operation, the surface soil has a high degree of crushing, does not disturb the soil stratification state, and the operation is stable.

Description

Technical Field

[0001] The invention relates to the field of agricultural machinery, in particular to a mixed-knife segmented double-helix powder ridge cutter. Background Art

[0002] Powder ridge tillage technology is a new type of high-yield tillage technology, and the powder ridge machine is the main equipment for powder ridge tillage. At present, the vibration of the rotary cutting tool of the powder ridge machine is large. When most powder ridge cutting tools are working, the cutting resistance is large and the power consumption is large, which leads to energy waste, reduces the service life and driving comfort of the powder ridge machine, and affects the promotion and application of the powder ridge machine and powder ridge tillage technology. Therefore, it is of great significance to improve and optimize the powder ridge cutting tool and reduce the vibration of the rotary cutting tool of the powder ridge machine.

[0003] Some research has also been conducted on powder ridge machines in China, and some results have been achieved, and some improvement plans have been proposed for powder ridge operations. For example, Chinese patent 201910862746.6 discloses a pneumatic deep loosening powder ridge machine using a reverse spiral blade drill and a method of use. The pneumatic deep loosening powder ridge machine using a reverse spiral blade drill sets the adjacent spiral auger blades to be discontinuous and rotate in opposite directions. The adjacent spiral auger blades with opposite rotation directions lift and press the soil at the same time, and the soil is turned up and down between two adjacent spiral blades, which can achieve soil crushing. However, the soil layer distribution will be disrupted during operation, the stability is poor, the reliability is not high, the working effect is greatly affected by the speed, and the applicability is poor. Summary of the invention

[0004] In order to overcome the defects of the prior art, and to address the problems of large cutting resistance, high power loss and large vibration of powder ridge tools, the present invention provides a mixed-blade segmented double-helix powder ridge tool. The tool has more uniform force and higher soil fragmentation, and can effectively reduce cutting resistance and vibration to achieve better working results.

[0005] The technical solution adopted by the present invention is: a mixed-blade segmented double-spiral powder ridge tool, the components of which include a left powder ridge tool and a right powder ridge tool, the components and structures of the left powder ridge tool and the right powder ridge tool are the same, the left powder ridge tool and the right powder ridge tool are symmetrically installed with a 90° offset, the components of the left powder ridge tool include a knife shaft, a powder ridge tool, a first middle curved blade, a second middle curved blade, an upper curved blade, a first section of a right spiral blade of the left tool, a second section of a right spiral blade of the left tool, a third section of a right spiral blade of the left tool, a fourth section of a right spiral blade of the left tool, hollowing on the spiral blade of the left tool, and an oblique blade of the left tool,

[0006] The structure and connection relationship of the left powder ridge tool are as follows: the four right spiral blades of the left powder ridge tool are evenly distributed on the axial tool shaft, the tool shaft below the first middle curved blade is a disconnected tool shaft, the four right spiral blades are smoothly and fixedly connected to the tool shaft, each spiral blade rotates 180° around the tool shaft, the first right spiral blade of the left tool coincides with the horizontal plane where the starting point of the second right spiral blade of the left tool is located, the end point of the first right spiral blade of the left tool coincides with the vertical plane where the starting point of the fourth right spiral blade of the left tool is located, the vertical plane where the starting point of the first right spiral blade of the left tool coincides with the vertical plane where the end point of the second right spiral blade of the left tool is located, the vertical plane where the starting point of the third right spiral blade of the left tool coincides with the vertical plane where the starting point of the first right spiral blade of the left tool is located, and four upper curved knives are smoothly and fixedly connected to the uppermost end of the tool shaft, and the first right spiral blade of the left tool and the second right spiral blade of the left tool are respectively smoothly and fixedly connected to an oblique knife of the left tool.

[0007] The knife shaft is in the shape of a cylinder and is hollow. The knife shaft below the first middle curved knife is a disconnected knife shaft, and the outer circumference of the knife shaft is surrounded by four segmented spiral blades.

[0008] The first middle curved knife and the second middle curved knife are smoothly fixedly connected on the two spiral blade segments outside the knife shafts of the left powder ridge tool and the right powder ridge tool. The two curved knives are staggered. The vertical plane where the first middle curved knife is located is at an angle of 60° with the starting section of the fourth section of the right spiral blade of the left tool. The radial angle between the first middle curved knife and the second middle curved knife is 55°. The direction of the curved knife edge is the same as that of the corresponding powder ridge knife edge, and the installation direction is opposite to that of the powder ridge knife.

[0009] The powder ridging knife is divided into a left-tool powder ridging knife and a right-tool powder ridging knife according to the different installed tools, and is installed with a 90° offset after being in a mirror-symmetrical state.

[0010] The four right spiral blades of the left powder ridge tool are evenly distributed axially on the tool shaft, and each spiral blade is hollowed out.

[0011] The single helical blade surrounds the blade axis 180°.

[0012] The left powder ridge tool and the right powder ridge tool have four upper curved knives evenly installed at the top of the tool shaft, and the four knives are evenly distributed axially at 90° intervals.

[0013] Two powder ridge knives are smoothly and fixedly connected on each section of the spiral blade. The angle between the second powder ridge knife at the upper end and the starting end of the fourth section of the right spiral blade of the left tool is 35°. The first powder ridge knife at the upper end and the second powder ridge knife at the upper end are distributed at an interval of 110° on the axis of the fourth section of the right spiral blade.

[0014] The outstanding advantages of the present invention are:

[0015] 1. The use of segmented double-helix spiral blades and disconnected cutter shafts can reduce the power consumption and cutting resistance of deep tillage operations and achieve a tillage effect that loosens the internal soil.

[0016] 2. The first middle scimitar and the second middle scimitar installed on the external spiral blade segment of the cutter shaft can effectively crush the soil falling from the hollow part of the spiral blade of the left cutter, and the middle scimitar and the middle scimitar can also prevent the continued rise of the lowest layer of soil that has risen due to the lifting effect of the first right spiral blade of the left cutter and the second spiral blade of the left cutter at the lower part of the cutter shaft, thereby achieving the effect of crushing the soil without destroying the soil layer.

[0017] 3. The four upper curved knives installed at the top of the cutter shaft can re-cut the soil that has risen due to the lifting effect of the third section right spiral blade of the left cutter and the fourth section right spiral blade of the left cutter and block the rising of soil blocks, thereby improving the soil crushing degree when the powder ridge cutter is working, achieving better crushing effect and maintaining the stability of the soil layer distribution state, protecting the soil layer stratification state from damage and having better water retention. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic structural diagram of the mixed-knife segmented double-helix powder ridge cutter described in the present invention.

[0019] Figure 2 It is a structural schematic diagram of the left cutter of the mixed-cutter segmented double-helix powder ridge cutter described in the present invention.

[0020] Figure 3 It is a schematic diagram of the installation angle of the powder ridging knife of the mixed-knife segmented double-helix powder ridging tool described in the present invention.

[0021] Figure 4 It is a schematic diagram of the installation angle of the middle curved blade of the mixed blade segmented double spiral powder ridge tool described in the present invention.

[0022] Marked in the figure are: knife shaft 1, powder ridge knife 2, first middle curved knife 3, second middle curved knife 4, upper curved knife 5, first section of right spiral blade of left tool 6, second section of right spiral blade of left tool 7, third section of right spiral blade of left tool 8, fourth section of right spiral blade of left tool 9, hollow on the spiral blade of left tool 10, oblique knife of left tool 11, disconnection point of knife shaft of left tool 12, first powder ridge knife at the upper end 13, second powder ridge knife at the upper end 14. DETAILED DESCRIPTION

[0023] The technical solution of the present invention is further described below in conjunction with the accompanying drawings. The embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, other embodiments obtained by ordinary technicians in this field without creative work are all within the scope of protection of the present invention.

[0024] First of all, it should be noted that in the description of the present invention, unless otherwise clearly specified and limited, the terms "connected" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection, a mechanical connection, or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0025] In the description of the present invention, unless otherwise specified, "plurality" means two or more than two; the orientations or positional relationships indicated by the terms "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail", etc. are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", "third", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0026] like Figures 1 to 4 As shown, the mixed-knife segmented double-spiral powder ridge cutter of the present invention is composed of a left powder ridge cutter and a right powder ridge cutter. The left powder ridge cutter and the right powder ridge cutter have the same components and structure, and are installed symmetrically and offset by 90°. The components of the left powder ridge cutter include a cutter shaft 1, a powder ridge cutter 2, a first middle curved knife 3, a second middle curved knife 4, an upper curved knife 5, a first right spiral blade 6 of the left cutter, a second right spiral blade 7 of the left cutter, a third right spiral blade 8 of the left cutter, a fourth right spiral blade 9 of the left cutter, a hollow 10 on the spiral blade of the left cutter, an oblique knife 11 of the left cutter, and a disconnection point 12 of the cutter shaft of the left cutter. The specific structure and connection relationship are as follows:

[0027] The four right spiral blades of the left powder ridge tool are evenly distributed on the axial tool shaft 1. The tool shaft 1 is cylindrical and hollow. The tool shaft 1 below the first middle curved knife 3 is a disconnected tool shaft. The four right spiral blades are smoothly and fixedly connected to the tool shaft. Each spiral blade rotates 180° around the tool shaft. The first right spiral blade 6 of the left tool coincides with the horizontal plane where the starting point of the second right spiral blade 7 of the left tool is located. The end point of the first right spiral blade 6 of the left tool coincides with the vertical plane where the starting point of the fourth right spiral blade 9 of the left tool is located. The vertical plane where the starting point of the first section right spiral blade 6 of the tool is located coincides with the vertical plane where the end point of the second section right spiral blade 7 of the left tool is located, the vertical plane where the starting point of the third section right spiral blade 8 of the left tool is located coincides with the vertical plane where the starting point of the first section right spiral blade 6 of the left tool is located, and four upper curved knives 5 are smoothly and fixedly connected to the uppermost end of the tool shaft, and a bevel knife 11 of the left tool is smoothly and fixedly connected to the first section right spiral blade 6 of the left tool and the second section right spiral blade 7 of the left tool respectively, and all connections between all components are bolted fixed connections.

[0028] like Figures 2 to 3 As shown, two powder ridge knives are smoothly fixedly connected to each section of the spiral blade, the second powder ridge knife 14 at the upper end and the starting end of the fourth section right spiral blade 9 of the left tool are at an angle of 35°, the first powder ridge knife 13 at the upper end and the second powder ridge knife 14 at the upper end are distributed 110° apart in the axial direction of the fourth section right spiral blade 9,

[0029] like Figure 4 As shown, the first middle curved knife 3 and the second middle curved knife 4 are smoothly fixedly connected on the two spiral blade segments outside the knife shafts of the left powder ridge tool and the right powder ridge tool, the vertical plane where the middle curved knife 3 is located and the starting section of the fourth section of the right spiral blade 9 of the left tool have an angle of 60°, the radial angle between the first middle curved knife 3 and the second middle curved knife 4 is 55°, the direction of the curved knife edge is the same as the direction of the corresponding powder ridge knife 2 edge, and the installation direction is opposite to that of the powder ridge knife 2.

[0030] In the present invention, the use of segmented double-helical spiral blades and disconnected cutter shafts can reduce the power consumption and cutting resistance of deep tillage operations and achieve a tillage effect of loosening the internal soil.

[0031] In the present invention, the first middle curved blade 3 and the second middle curved blade 4 installed on the external spiral blade segment of the cutter shaft 1 can effectively crush the soil falling from the hollow 10 on the spiral blade of the left cutter, and the first middle curved blade 3 and the second middle curved blade 4 can also prevent the continued rise of the lowest layer of soil that has risen due to the lifting effect of the first section right spiral blade 6 of the left cutter and the second section spiral blade 7 of the left cutter at the lower part of the cutter shaft 1, thereby achieving the effect of crushing the soil without destroying the soil layer.

[0032] In the present invention, the four upper curved knives 5 installed at the uppermost end of the cutter shaft 1 can re-cut the soil that has risen due to the lifting action of the third section right spiral blade 8 of the left cutter and the fourth section right spiral blade 9 of the left cutter and block the rising of soil blocks, thereby improving the soil crushing degree when the powder ridge cutter is working, achieving better crushing effect and maintaining the stability of the soil layer distribution state, protecting the soil layer stratification state from destruction and having better water retention.

[0033] Working principle and process:

[0034] The mixed-blade segmented double-helix powder ridge tool, when the left and right powder ridge tools rotate in opposite directions while moving forward, after the oblique blade 11 of the left tool contacts the soil, the soil first gradually breaks and ridges up to form clods, but because the spiral blades are hollow, their pushing effect on the soil is reduced, and the clods formed are smaller. When the powder ridge tools of the first section right spiral blade 6 of the left tool and the second section right spiral blade 7 of the left tool contact the soil, as the blades move forward and rotate, the powder ridge blades in contact with the bottom layer of soil cut the bottom layer to separate and crush the soil into clods. The oblique blade 11 of the left tool installed on the first section right spiral blade 6 of the left tool and the second section right spiral blade 7 of the left tool The sliding cutting effect produced can reduce resistance, and these soil blocks and soil blocks produced by pushing rotate and move upward under the action of the first section right spiral blade 6 of the left tool and the second section right spiral blade 7 of the left tool. However, since the right spiral blade is partially hollow, the soil blocks that move to the hollow 10 on the spiral blade of the left tool, part of them pass through the right spiral blade under the action of gravity and fall below it, and the other part passes over the hollow 10 on the spiral blade of the left tool under the action of inertia, and then continues to rotate and move upward under the action of the right spiral blade until the bottom layer of soil is blocked by the first middle curved blade 3 and the second middle curved blade 4 and cut again, and the bottom layer of soil will no longer continue to rise. The middle and upper layers of soil will move upward due to the ridge raising of the lower layer of soil and the lifting effect of the third section right spiral blade 8 of the left tool and the fourth section spiral blade 9 of the left tool. However, since the rotation speed of this part of the soil is lower than the rotation speed of the powder ridge knife 2, when this part of the soil meets the powder ridge knife blade, the powder ridge knife 2 will have a cutting effect on it. The soil that passes through the hollow 10 on the spiral blade of the left tool and the partially segmented spiral blade will be cut by the powder ridge knife 2. The soil that falls downward will be further crushed by the first middle curved knife 3 and the second middle curved knife 4 installed on the two spiral blade segments outside the knife shaft. At the same time, due to the hollowing of the spiral blades, the rotation speed of these soil blocks is relatively slow, and the distance they are finally thrown out under the centrifugal action is also small. After being thrown out, the four upper curved knives 5 installed at the top of the knife shaft 1 cut and block these soil blocks again. In this process, due to the speed difference cutting effect, the soil blocks are again cut alternately by the powder ridge knife 2, the first middle curved knife 3, the second middle curved knife 4, and the four upper curved knives 5, thereby improving the soil crushing degree when the powder ridge knife is working, achieving better crushing effect, maintaining the stability of the system and not destroying the stratification of the soil layer. The knife shaft 1 is a hollow cylinder and the knife shaft 1 below the first middle curved knife 3 is a disconnected knife shaft, which can reduce the obstruction of the tool and increase the working speed. After the tool moves over the soil, the broken soil blocks below the surface fall back under the action of gravity, ridged, and the degree of soil crushing is high.

Claims

1. A mixed-knife segmented double-helix powder ridge tool, characterized in that: The components include a left powder ridge cutter and a right powder ridge cutter, which have the same components and structure, and are symmetrically installed with a 90° offset. The components of the left powder ridge cutter include a cutter shaft, a powder ridge cutter, a first middle curved blade, a second middle curved blade, an upper curved blade, a first section of the right spiral blade of the left cutter, a second section of the right spiral blade of the left cutter, a third section of the right spiral blade of the left cutter, a fourth section of the right spiral blade of the left cutter, hollowing on the spiral blade of the left cutter, and a bevel cutter of the left cutter; The structure and connection relationship of the left powder ridge tool are as follows: the four sections of right spiral blades of the left powder ridge tool are evenly distributed on the axial tool shaft, the tool shaft below the first middle curved blade is a disconnected tool shaft, the four sections of right spiral blades are smoothly and fixedly connected to the tool shaft, each section of the spiral blade rotates 180° around the tool shaft, the first section of the right spiral blade of the left tool coincides with the horizontal plane where the starting point of the second section of the right spiral blade of the left tool is located, the end point of the first section of the right spiral blade of the left tool coincides with the vertical plane where the starting point of the fourth section of the right spiral blade of the left tool is located, the vertical plane where the starting point of the first section of the right spiral blade of the left tool coincides with the vertical plane where the end point of the second section of the right spiral blade of the left tool is located, the vertical plane where the starting point of the third section of the right spiral blade of the left tool coincides with the vertical plane where the starting point of the first section of the right spiral blade of the left tool is located, the upper end of the tool shaft is smoothly and fixedly connected with four upper curved blades, and the first section of the right spiral blade of the left tool and the second section of the right spiral blade of the left tool are respectively smoothly and fixedly connected with an oblique knife of the left tool; The first middle curved knife and the second middle curved knife are smoothly fixedly connected on the two spiral blade segments outside the knife shafts of the left powder ridge tool and the right powder ridge tool. The two curved knives are staggered. The vertical plane where the first middle curved knife is located is at an angle of 60° with the starting section of the fourth section of the right spiral blade of the left tool. The radial angle between the first middle curved knife and the second middle curved knife is 55°. The direction of the curved knife edge is the same as that of the corresponding powder ridge knife edge, and the installation direction is opposite to that of the powder ridge knife.

2. The mixed blade segmented double spiral powder ridge cutter according to claim 1, characterized in that: The knife shaft is in the shape of a cylinder and is hollow. The knife shaft below the first middle curved knife is a disconnected knife shaft, and the outer circumference of the knife shaft is surrounded by four segmented spiral blades.

3. The mixed blade segmented double spiral powder ridge cutter according to claim 1, characterized in that: The powder ridging knife is divided into a left-tool powder ridging knife and a right-tool powder ridging knife according to the different installed tools, and is installed with a 90° offset after being in a mirror-symmetrical state.

4. The mixed blade segmented double spiral powder ridge cutter according to claim 1, characterized in that: The four right spiral blades of the left powder ridge tool are evenly distributed axially on the tool shaft, and each spiral blade is hollowed out.

5. The mixed blade segmented double spiral powder ridge cutter according to claim 1, characterized in that: The single helical blade surrounds the blade axis 180°.

6. The mixed blade segmented double spiral powder ridge cutter according to claim 1, characterized in that: Four upper curved knives are evenly installed at the upper end of the knife shafts of the left powder ridge tool and the right powder ridge tool, and the four knives are evenly distributed axially at an interval of 90°.

7. The mixed-knife segmented double-helix powder ridge cutter according to claim 1, characterized in that: Two powder ridge knives are smoothly and fixedly connected on each section of the spiral blade. The angle between the second powder ridge knife at the upper end and the starting end of the fourth section of the right spiral blade of the left tool is 35°. The first powder ridge knife at the upper end and the second powder ridge knife at the upper end are distributed at an interval of 110° on the axis of the fourth section of the right spiral blade.

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