CN210579926U - Rotary blade - Google Patents
Rotary blade Download PDFInfo
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- CN210579926U CN210579926U CN201921527688.3U CN201921527688U CN210579926U CN 210579926 U CN210579926 U CN 210579926U CN 201921527688 U CN201921527688 U CN 201921527688U CN 210579926 U CN210579926 U CN 210579926U
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Abstract
The utility model relates to the technical field of parts of agricultural equipment, in particular to a rotary blade, which comprises an integrally formed handle and a blade body, wherein the lower side of the blade body is a cutting edge, and the blade body is also provided with an alloy coating; the alloy coating comprises a first boundary line, a second boundary line and a third boundary line which are connected end to end, the first boundary line is coincided with part of the side edge of the knife body, the second boundary line is coincided with part of the lower edge of the knife edge, the third boundary line is composed of a first straight line and a second arc line, one end of the first straight line is connected with the first boundary line, the other end of the first straight line extends downwards towards the direction of the knife edge 22, one end of the second arc line is connected with the other end of the first straight line, the other end of the second arc line extends towards the direction of the knife handle and is connected with one end of the second boundary line, and the intersection point of the second arc line and the second boundary line is located on the extension. The worn cutting edge is in smooth transition, so that the winding phenomenon is effectively solved, and the service life of the knife is prolonged.
Description
Technical Field
The utility model relates to an agricultural implement spare part technical field, concretely relates to rotary blade.
Background
The rotary tillage operation can improve the structure of soil, thereby providing good conditions for subsequent mechanical operation, seed germination and crop growth. The rotary blade is a core component of the rotary cultivator and plays an important role in the cultivation process.
In the prior art, as shown in fig. 1, a rotary blade comprises a blade holder and a blade body, the lower edge of the blade body is a blade, the rotary blade is mounted on a rotary cultivator through the blade holder, during cultivation, one side of the blade is a stressed side, the deeper the blade is from the blade holder, the deeper the blade is screwed into soil, the larger the friction force which needs to be overcome is, the more serious the abrasion is, in order to prolong the service life of the rotary blade, an alloy coating is usually arranged on the blade body, as shown in fig. 1, the alloy coating is arranged on the stressed side of the blade body, the lower edge of the alloy coating is superposed with the lower edge of the blade, the upper edge inclines downwards from the side far from the blade holder to the side close to the blade holder with a fixed slope, namely, the alloy coating gradually narrows from the side far from the blade holder to the side close to the blade holder, the service life of the rotary blade is prolonged, and the coating area, the cost is reduced. However, in practice, after the rotary blade is used for a period of time, the worn shape of the rotary blade is as shown in fig. 2, the blade is not in smooth transition after being worn, and a bulge appears near the top of the alloy coating, so that the worn rotary blade is easy to wind impurities such as weeds, straws and plastic films, and the operation quality and efficiency of the rotary blade are affected.
In view of the above, the present invention provides a rotary blade for overcoming the above technical problems.
SUMMERY OF THE UTILITY MODEL
To the technical problem, the utility model provides a rotary blade, when improving rotary blade life, and in the use, the rotary blade smooth transition after the wearing and tearing.
In order to achieve the above purpose, the utility model adopts the following technical scheme: a rotary blade comprises a cutter handle and a blade body which are integrally formed, wherein a blade is arranged on the lower side of the blade body, and an alloy coating is also arranged on the blade body; the alloy coating comprises a first boundary line, a second boundary line and a third boundary line which are connected end to end, the first boundary line is overlapped with part of the side edge of the knife body, the second boundary line is overlapped with part of the lower edge of the knife edge, the third boundary line is composed of a first straight line and a second arc line, one end of the first straight line is connected with the first boundary line, the other end of the first straight line extends downwards towards the direction of the knife edge 22, one end of the second arc line is connected with the other end of the first straight line, the other end of the second arc line extends towards the direction of the knife handle and is connected with one end of the second boundary line, and the intersection point of the second arc line and the second boundary line is located on the extension line of the inner side edge of the knife handle.
Further, an intersection of the first boundary line and the first straight line is located on an upper side of a midpoint of the blade side edge.
Further, the included angle between the first straight line and the horizontal plane is 12-18 degrees.
Further, the central angle of the second arc line is 50-100 degrees.
Furthermore, alloy coatings are symmetrically arranged on two side faces of the knife body.
Further, the thickness of the alloy coating is 0.5-1.5 mm.
Further, the tool handle is provided with a mounting hole.
Furthermore, one end of the knife body is a knife head, the upper side of the knife body is a knife back, and the knife head bends towards the side of the knife back.
Furthermore, a strip-shaped reinforcing rib with the same curvature as the knife back is arranged at the joint of the knife body and the knife handle.
Furthermore, the two side surfaces of the rotary tillage cutter are symmetrically provided with the reinforcing ribs.
The utility model discloses a rotary blade, through the length of extension alloy coating, on the basis of prior art's alloy coating's shape promptly, has increased one section again and has moved towards the handle of a knife direction, and the upside edge is the alloy coating of pitch arc to the nodical edge that sets up the top boundary line of alloy coating and lower boundary line is located the inboard edge extension line of handle of a knife. Through the arrangement, the worn cutting edge is smoothly transited without obvious protrusion, so that the winding of weeds, straws and plastic films can be avoided, the winding phenomenon is effectively solved, the operation quality and efficiency of the rotary blade are improved, and the service life of the rotary blade is prolonged.
Drawings
FIG. 1 is a schematic view of a rotary blade according to the prior art;
FIG. 2 is a schematic view of a prior art rotary blade after wear;
FIG. 3 is a schematic view of the rotary blade of the present invention;
FIG. 4 is a schematic view of the worn rotary blade of the present invention;
in the above figures: 1-a knife handle; 11-inner edge extension; 2-a blade body; 21-knife back; 22-a blade edge; 23-a cutter head; 24-blade side edge; 3-alloy coating; 31-a first boundary line; 32-a second boundary line; 33-third boundary line; 331-a first straight line; 332-second arc.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.
The structure of a rotary blade in the prior art is shown in fig. 1, in order to increase the wear resistance of the rotary blade and prolong the service life of the rotary blade, an alloy coating is usually arranged on the blade body, the alloy coating is shown as a filling part in fig. 1, the lower edge of the alloy coating is overlapped with the lower edge of the blade, the upper edge is inclined downwards with a fixed slope from one side far away from the handle to one side close to the handle, namely, the alloy coating is gradually narrowed from one side far away from the handle to one side close to the handle, the design can prolong the service life of the rotary blade, reduce the coating area of the alloy coating and reduce the cost. However, in practice, after the rotary blade is used for a period of time, the worn shape of the rotary blade is as shown in fig. 2, the blade is not in smooth transition after being worn, and a bulge appears near the top of the alloy coating, so that the worn rotary blade is easy to wind impurities such as weeds, straws and plastic films, and the operation quality and efficiency of the rotary blade are affected.
In order to the above situation, the utility model provides a rotary blade, its concrete structure is as shown in fig. 3, including integrated into one piece handle of a knife 1 and blade 2, the upside of blade 2 is back of a knife blade 21, and the downside is cutting edge 22, and the one end (the one end of keeping away from handle of a knife 1) of blade 2 is tool bit 23, and tool bit 23 is to back of a knife blade 21 side buckling. The knife handle 1 is provided with a mounting hole for mounting the rotary blade on a knife holder of the rotary cultivator. The joint of the blade body 2 and the handle 1 is provided with a strip-shaped reinforcing rib with the same curvature as the back of the blade 21, and the two side surfaces of the rotary blade are symmetrically provided with the reinforcing ribs. The arrangement of the reinforcing ribs can increase the transverse and longitudinal mechanical support of the rotary blade and increase the bending resistance and the breaking resistance of the rotary blade.
In order to enhance the wear resistance of the rotary blade and prolong the service life of the rotary blade, the blade body 2 is also provided with an alloy coating 3; the alloy coating 3 comprises a first boundary line 31, a second boundary line 32 and a third boundary line 33 which are connected end to end, the first boundary line 31 is coincident with part of the blade side edge 24, the second boundary line 32 is coincident with part of the lower edge of the blade edge 22, the third boundary line 33 is composed of a first straight line 331 and a second arc line 332, one end of the first straight line 331 is connected with the first boundary line 31, the other end of the first straight line 331 extends downwards towards the blade edge 22, one end of the second arc line 332 is connected with the other end of the first straight line 331, the other end of the second arc line 332 extends towards the tool shank 1 and is connected with one end of the second boundary line 32, and the intersection point of the second arc line 332 and the second boundary line 32 is positioned on the extension line 11 of the inner side edge of the tool shank 1.
In the embodiment, by prolonging the length of the alloy coating, namely on the basis of the shape of the alloy coating in the prior art, a section of the alloy coating which faces the cutter handle and is provided with an arc-shaped upper side edge is added, and the intersection point of the upper boundary line and the lower boundary line of the alloy coating is arranged on the extension line of the inner side edge of the cutter handle. Through the arrangement, the shape of the worn rotary blade is as shown in fig. 4, the smooth transition of the worn blade can be seen, no obvious bulge exists, the winding of weeds, straws and plastic films can be avoided, the winding phenomenon is effectively solved, the operation quality and efficiency of the rotary blade are improved, and the service life of the rotary blade is prolonged.
To facilitate a rounded transition of the worn edge, typically the intersection of the first borderline 31 of the alloy coating 3 and the first straight line 331 is located on the upper side of the midpoint of the blade side edge 24. Generally, the angle between the first straight line 331 and the horizontal plane is set to be 12-18 degrees, and in this embodiment, the angle between the first straight line 331 and the horizontal plane is set to be 15 degrees. Generally, the central angle of the second arc line 332 is set to 50-100 degrees, and in the present embodiment, the central angle of the second arc line 332 is set to 60 degrees.
Alloy coatings are symmetrically arranged on two side surfaces of the blade body 1, protective layers are arranged on two sides of the blade body 1, the service life of the rotary blade can be prolonged, the thickness of the alloy coatings is 0.5-1.5mm generally, and in the embodiment, the thickness of the alloy coatings is 1 mm.
It will be understood that modifications and variations can be made by persons skilled in the art in light of the above teachings and all such modifications and variations are considered to be within the scope of the invention as defined by the following claims.
Claims (10)
1. A rotary blade comprises a cutter handle and a blade body which are integrally formed, wherein a blade is arranged on the lower side of the blade body, and an alloy coating is also arranged on the blade body; the alloy coating comprises a first boundary line, a second boundary line and a third boundary line which are connected end to end, the first boundary line is overlapped with part of the side edge of the knife body, the second boundary line is overlapped with part of the lower edge of the knife edge, the third boundary line is composed of a first straight line and a second arc line, one end of the first straight line is connected with the first boundary line, the other end of the first straight line extends downwards towards the direction of the knife edge, one end of the second arc line is connected with the other end of the first straight line, the other end of the second arc line extends towards the direction of the knife handle and is connected with one end of the second boundary line, and the intersection point of the second arc line and the second boundary line is positioned on the extension line of the inner side edge of the knife handle.
2. A rotary blade according to claim 1, wherein the intersection of the first boundary line and the first straight line is located above the midpoint of the blade side edge.
3. A rotary blade according to claim 2, wherein the first line is angled from 12 to 18 degrees from the horizontal.
4. A rotary blade according to claim 3, wherein the central angle of the second arc is 50-100 degrees.
5. The rotary blade according to claim 4, wherein the blade body is symmetrically provided with the alloy coatings on both sides.
6. A rotary blade according to any one of claims 1 to 5, wherein the thickness of the alloy coating is 0.5-1.5 mm.
7. The rotary tiller blade of claim 6, wherein the handle is provided with a mounting hole.
8. The rotary tiller blade according to claim 6, wherein the blade body is provided with a blade head at one end thereof, and a blade back at an upper side thereof, and the blade head is bent toward the blade back.
9. The rotary tillage blade of claim 8, wherein a strip-shaped reinforcing rib having the same curvature as the blade back is arranged at the joint of the blade body and the blade handle.
10. A rotary blade according to claim 9, wherein the reinforcing ribs are symmetrically arranged on both sides of the rotary blade.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921527688.3U CN210579926U (en) | 2019-09-16 | 2019-09-16 | Rotary blade |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921527688.3U CN210579926U (en) | 2019-09-16 | 2019-09-16 | Rotary blade |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210579926U true CN210579926U (en) | 2020-05-22 |
Family
ID=70700111
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921527688.3U Active CN210579926U (en) | 2019-09-16 | 2019-09-16 | Rotary blade |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210579926U (en) |
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2019
- 2019-09-16 CN CN201921527688.3U patent/CN210579926U/en active Active
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