CN118061301A - High efficiency saw chain and cutting blade thereof - Google Patents
High efficiency saw chain and cutting blade thereof Download PDFInfo
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- CN118061301A CN118061301A CN202410204732.6A CN202410204732A CN118061301A CN 118061301 A CN118061301 A CN 118061301A CN 202410204732 A CN202410204732 A CN 202410204732A CN 118061301 A CN118061301 A CN 118061301A
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- cutting
- pin shaft
- cutting blade
- saw chain
- shaft hole
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- 230000005540 biological transmission Effects 0.000 claims description 23
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 abstract description 5
- 229910052744 lithium Inorganic materials 0.000 abstract description 5
- 230000000994 depressogenic effect Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 238000013475 authorization Methods 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000002146 bilateral effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 210000001503 joint Anatomy 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000036346 tooth eruption Effects 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
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Abstract
The invention discloses a high-efficiency saw chain and a cutting blade thereof. The high-efficiency saw chain comprises a cutting blade, a connecting piece and a pin shaft, wherein the cutting blade is divided into a left cutting knife and a right cutting knife according to the direction of an outer tangential plane, the left cutting knife and the right cutting knife are arranged in a staggered mode, the whole annular saw chain is formed by connecting the connecting piece and the pin shaft, at this time, the left cutting knife, the middle guide tooth and the right cutting knife are arranged in the middle, and the connecting piece is positioned on two sides. The invention centers the stress point during cutting, reduces the resistance during cutting, and effectively prolongs the endurance time of the lithium battery and the gasoline engine.
Description
Technical Field
The present invention relates to a saw chain, and more particularly, to a high efficiency saw chain and a cutting blade thereof.
Background
The saw chain is a portable saw using a lithium battery or a gasoline engine as power, and is mainly used for felling and making materials, and the working principle is that the cutting action is carried out by the transverse movement of staggered L-shaped blades on the saw chain. The blades are staggered left and right on the saw chain, and the distance between the outer cutting surfaces of the left and right staggered blades is the maximum gap for cutting. When cutting, the upper tangential surfaces of the left and right staggered blades need to cut the wood where the gap is located, and the upper tangential surfaces of the left and right staggered blades overlap in the width range of the gap.
The authorized bulletin number CN 215202400U discloses a high-efficiency saw chain, which comprises a plurality of transmission plates, a plurality of rebound transmission plates, a plurality of cutting knives, a plurality of connecting pieces and a plurality of pin shafts; the transmission plates 1 are arranged at intervals, only one rebound transmission plate 2 is arranged between any two adjacent transmission plates 1, the transmission plates 1 and the rebound transmission plates 2 are positioned in the same plane, connecting pieces 4 are arranged at the butt joint positions of the transmission plates 1 and the adjacent rebound transmission plates 2, the connecting pieces 4 are positioned on one side of the plane where the transmission plates 1 and the rebound transmission plates 2 are positioned, and the connecting pieces 4 are hinged with the transmission plates 1 and the rebound transmission plates 2 through pin shafts 5; the plurality of cutting knives 3 are arranged at intervals, any two adjacent cutting knives 3 are respectively positioned on two sides of a plane where the transmission sheet 1 and the rebound transmission sheet 2 are positioned, the two adjacent cutting knives 3 are of symmetrical structures, the cutting knives 3 correspond to the connecting sheets 4 and are hinged with pin shafts 5 of the connecting sheets 4, and the two adjacent connecting sheets 4 are not connected with the cutting knives 3 at the same time. The invention effectively reduces the energy consumption of the saw chain and effectively prolongs the endurance time of the lithium battery or the gasoline engine.
However, the above technical solution has the following disadvantages: 1. the transmission sheet 1 and the rebound transmission sheet 2 are arranged between two adjacent cutting knives and are connected through the connecting sheet, so that the length of a single section of the saw chain is increased, and the sawing efficiency is influenced. 2. The two adjacent cutters 3 are respectively positioned at two sides of the plane where the driving sheet 1 and the rebound driving sheet 2 are positioned, which is equivalent to offset, and affects the cutting stability. 3. The outer end of the L-shaped bending part at the upper part of the cutter 3 needs to exceed the connecting base 31 and the driving piece, thereby increasing the manufacturing cost.
Disclosure of Invention
The technical problems to be solved by the invention are as follows: overcomes the defects of the prior art and provides a high-efficiency saw chain and a cutting blade thereof, which are reasonable in design, are arranged in the middle and have high sawing efficiency.
The technical scheme of the invention is as follows:
The utility model provides a cutting blade of saw chain, contains the connection basal portion, the middle part interval of connection basal portion is provided with the round pin shaft hole, be provided with the cutting depressed part in the middle of the upper portion of connection basal portion, the front and back both sides of cutting depressed part are degree of depth restriction portion and cutting portion respectively, the cutting portion has external tangent plane and upper tangent plane, the lower part of connection basal portion is provided with the transmission arch, during the installation, the connection basal portion is in the coplanar with the well guide tooth of saw chain, and both sides are all connected through connection piece and round pin axle respectively.
Further: the inner side edge of the upper tangent plane exceeds the central line of the thickness of the connecting base part and does not exceed the whole thickness of the connecting base part, and the outer side edge of the upper tangent plane exceeds the outer end part of the pin shaft.
Further: the upper tangent plane is the inclined plane of high back, the outer tangent plane is the inclined plane of high low down, the intersection of upper tangent plane and outer tangent plane is the knife edge.
Further: the cutting part is of an L-shaped structure.
Further: the pin shaft holes are two, and the center distance T1 = 7.1 +/-2 mm; the distance C2=6.5+/-1 mm between the horizontal center line of the pin shaft hole and the lower edge of the connecting base; the distance C1=6.0+/-1 mm between the horizontal center line of the pin shaft hole and the upper edge of the connecting base; the distance a=2.8±0.5mm of the external tangent to the connecting base.
Further: the depth limiter is offset from the center line and is biased toward the outer tangent plane side.
The high-efficiency saw chain utilizing the cutting blade further comprises a connecting sheet and a pin shaft, the cutting blade is divided into a left cutting blade and a right cutting blade according to the direction of the outer tangent plane, the left cutting blade and the right cutting blade are arranged in a staggered mode, wherein a front pin shaft hole of one left cutting blade is connected with a rear pin shaft hole of one middle guide tooth through the connecting sheet and the pin shaft, the front pin shaft hole of the middle guide tooth is connected with a rear pin shaft hole of one right cutting blade through the connecting sheet and the pin shaft, the front pin shaft hole of the right cutting blade is connected with a rear pin shaft hole of the next middle guide tooth through the connecting sheet and the pin shaft, the front pin shaft hole of the middle guide tooth is connected with the rear pin shaft hole of the next left cutting blade through the connecting sheet and the pin shaft, and the like, and the whole annular saw chain is formed; the left cutting knife 1, the middle guide tooth and the right cutting knife are positioned on the same central plane, and the connecting sheets are respectively positioned on two sides of the left cutting knife, the middle guide tooth and the right cutting knife.
Further: the distance between the external cutting surfaces of the left cutting knife and the right cutting knife is the maximum gap for cutting, and the upper cutting surfaces of the left cutting knife and the right cutting knife are overlapped in the width range of the gap.
Further: the middle part of well guide tooth is provided with two pin shaft holes at intervals, the lower part of well guide tooth is provided with the transmission arch, the upper portion of well guide tooth is provided with the second arch.
The beneficial effects of the invention are as follows:
1. The invention integrates the middle guide tooth and the cutting knife of the traditional structure, so that the stress point is centered during cutting, the resistance during cutting is reduced, and the endurance time of the lithium battery and the gasoline engine is effectively prolonged.
2. The invention is centrally arranged, the cutting blade and the middle guide tooth are positioned on the same plane, and the two sides of the cutting blade are connected through the connecting plate, so that the stability of the whole structure is improved.
3. The outer side edge of the upper section of the cutting knife exceeds the central line of the thickness of the connecting base part and does not exceed the whole thickness of the connecting base part, so that the whole structure is compact, and the processing cost is reduced.
4. The upper section and the outer section are inclined planes, so that chip removal is facilitated, blockage during sawing is reduced, heating is not easy to occur, and energy consumption is reduced.
5. The invention has reasonable design, compact connection and high sawing efficiency, reduces the length of the saw chain unit, improves the sawing efficiency, is easy to popularize and implement, and has good economic benefit.
Drawings
FIG. 1 is a schematic view of a high efficiency saw chain;
FIG. 2 is a top view of the high efficiency saw chain of FIG. 1;
FIG. 3 is a side view of the high efficiency saw chain of FIG. 1;
FIG. 4 is a schematic diagram of the left cutter of FIG. 1;
FIG. 5 is a schematic perspective view of the left cutter shown in FIG. 4;
FIG. 6 is a schematic view of the right cutter of FIG. 1;
FIG. 7 is a schematic perspective view of the right cutter shown in FIG. 6;
FIG. 8 is a size diagram of the right cutter of FIG. 1;
fig. 9 is a side view of the right cutter of fig. 8.
Detailed Description
Example 1: referring to fig. 1-9, in the drawings, a 1-left cutter, a 2-middle guide tooth, a 3-right cutter, a 4-pin shaft, a 5-connecting piece, a 6-connecting base, a 7-pin shaft hole, an 8-external tangential plane, a 9-transmission protrusion, a 10-upper tangential plane, an 11-cutting concave part and a 12-depth limiting part are shown.
The utility model provides a saw cutting blade for chain, contains connection basal portion 6, and the middle part interval of connection basal portion 6 is provided with round pin shaft hole 7, and round pin shaft hole 7 is two, is provided with cutting depressed part 11 in the middle of the upper portion of connection basal portion 6, and two around the cutting depressed part 11 are degree of depth restriction portion 12 and cutting portion respectively (the direction of cutting advance is preceding, and vice versa), and the cutting portion has external tangent plane 8 and upper tangent plane 10, wherein: the lower part of the connection base 6 is provided with a transmission protrusion 9 (this structure integrates the middle guide tooth and the cutter of the conventional structure).
The preferable scheme is as follows: the inner side edge of the upper tangent plane 10 exceeds the center line of the thickness of the connecting base 6 and does not exceed the whole thickness of the connecting base 6, and of course, the whole thickness can be exceeded, only the cost is wasted, the outer side edge of the upper tangent plane 10 exceeds the outer end of the pin shaft 4, the situation that the cutting seam is smaller than the length of the pin shaft 4 and the cutting cannot be performed is avoided. The upper tangential surface 10 is a front high and rear low inclined surface, the outer tangential surface 8 is a top high and bottom low inclined surface, and the junction of the upper tangential surface 10 and the outer tangential surface 8 is a knife edge.
The preferable scheme is as follows: the cutting part is of an L-shaped structure.
The preferable scheme is as follows: the center distance T1=7.1+ -2 mm of the two pin holes 7; the distance C2=6.5+ -1 mm between the horizontal center line of the pin shaft hole 7 and the lower edge of the connecting base 6; the distance C1=6.0+ -1 mm between the horizontal center line of the pin shaft hole and the upper edge of the connecting base 6; the distance a=2.8±0.5mm of the external tangential plane 8 from the connecting base 6.
The preferable scheme is as follows: the depth limiter 12 is offset from the centre line and is biased towards the tangential plane 8 side.
When the saw chain is installed and used, the connecting base part and the middle guide tooth of the saw chain are positioned on the same plane, and both sides of the saw chain are respectively connected with the pin shaft through the connecting sheet.
Example 2: this embodiment is substantially the same as the first embodiment in that the description is omitted except that: the high efficiency saw chain further comprises a connecting piece 5 and a pin 4, wherein: the cutting blade for the saw chain is divided into a left cutting knife 1 and a right cutting knife 3 according to the orientation of an outer tangential surface 10, the left cutting knife 1 and the right cutting knife 3 which are adjacent are arranged in a staggered mode, wherein a front pin shaft hole of one left cutting knife 1 is connected with a rear pin shaft hole of one middle guide tooth 2 through a connecting sheet 5 and a pin shaft 4, the front pin shaft hole of the middle guide tooth 2 is connected with a rear pin shaft hole of one right cutting knife 3 through the connecting sheet 5 and the pin shaft 4, the front pin shaft hole of the right cutting knife 3 is connected with a rear pin shaft hole of the next middle guide tooth 2 through the connecting sheet 5 and the pin shaft 4, the front pin shaft hole of the middle guide tooth 2 is connected with the rear pin shaft hole of the next left cutting knife 1, and the like, so on the whole annular saw chain is formed, at the moment, the left cutting knife 1, the middle guide tooth 2 and the right cutting knife 3 are positioned on the same plane in the center, and the connecting sheet 5 is respectively positioned on two sides of the left cutting knife 1, the middle guide tooth 2 and the right cutting knife 3.
The preferable scheme is as follows: two pin shaft holes are formed in the middle of the middle guide tooth 2 at intervals, a transmission bulge is arranged at the lower part of the middle guide tooth 2, and a second bulge is arranged at the upper part of the middle guide tooth 2.
Preferably, any two adjacent left cutting blades 1 and right cutting blades 3 are in a bilateral symmetry structure, when in cutting, the distance between the external cutting surfaces 10 of the left cutting blade 1 and the right cutting blade 3 is the maximum gap for cutting, and the upper cutting surfaces 8 of the left cutting blade 1 and the right cutting blade 3 are overlapped in the width range of the gap, so that a complete cutting surface is formed.
And moreover, the connecting base part 6 of the cutting blade is arranged in the middle, so that the stress point in cutting is in the middle, the resistance in cutting is reduced, and the endurance time of the lithium battery and the gasoline engine is effectively prolonged.
On the premise of meeting the technical characteristics of the schemes, the middle guide teeth, the pin shafts and the connecting sheets can also have structures corresponding to the existing saw chain (such as the cutting teeth for saw chains with the application publication number of CN 104708676A and the high-efficiency saw chain with the authorization notice number of CN 215202400U), and the external cutting surface 8, the upper cutting surface 10, the depth limiting part 12, the cutting edge and the like can also have structures corresponding to the existing saw chain.
The above description is only of the preferred embodiments of the present invention, and is not intended to limit the present invention in any way, and any simple modification made according to the technical spirit of the present invention still falls within the scope of the present invention.
Claims (9)
1. A cutting blade for a saw chain comprising a connecting base (6), the middle part of the connecting base (6) being provided with pin holes (7) at intervals, characterized in that: the cutting device is characterized in that a cutting concave part (11) is arranged in the middle of the upper part of the connecting base part (6), a depth limiting part (12) and a cutting part are respectively arranged on the front side and the rear side of the cutting concave part (11), the cutting part is provided with an outer tangential surface (8) and an upper tangential surface (10), a transmission bulge (9) is arranged on the lower part of the connecting base part (6), and when the cutting device is installed, the connecting base part (6) and the middle guide tooth (2) of a saw chain are positioned on the same plane, and the two sides are respectively connected with a pin shaft (4) through a connecting sheet (5).
2. A cutting blade for a saw chain according to claim 1, wherein: the inner side edge of the upper cutting surface (10) exceeds the central line of the thickness of the connecting base (6) and does not exceed the whole thickness of the connecting base (6), and the outer side edge of the upper cutting surface (10) exceeds the outer end part of the pin shaft (4).
3. A cutting blade for a saw chain according to claim 1, wherein: the upper tangential surface (10) is an inclined surface with a high front part and a low rear part, the outer tangential surface (8) is an inclined surface with a high upper part and a low lower part, and the intersection of the upper tangential surface (10) and the outer tangential surface (8) is a knife edge.
4. A cutting blade for a saw chain according to claim 1, wherein: the cutting part is of an L-shaped structure.
5. A cutting blade for a saw chain according to claim 1, wherein: the number of the pin shaft holes (7) is two, and the center distance T1 = 7.1 plus or minus 2mm; the distance C2=6.5+/-1 mm between the horizontal center line of the pin shaft hole (7) and the lower edge of the connecting base part (6); the distance C1=6.0+/-1 mm between the horizontal center line of the pin shaft hole (7) and the upper edge of the connecting base part (6); the distance a=2.8±0.5mm of the external cutting surface from the connection base (6).
6. A cutting blade for a saw chain according to claim 1, wherein: the depth limiter (12) is offset from the centre line and is inclined towards the side of the external tangent plane (8).
7. A high efficiency saw chain using the cutting blade according to any one of claims 1-6, comprising said connecting piece (5) and pin (4), characterized in that: the cutting blade is divided into a left cutting blade (1) and a right cutting blade (3) according to the direction of the external cutting surface (8), the left cutting blade (1) and the right cutting blade (3) are arranged in a staggered mode, wherein the front pin shaft hole of one left cutting blade (1) is connected with the rear pin shaft hole of one middle guide tooth (2) through the connecting sheet (5) and the pin shaft (4), the front pin shaft hole of the middle guide tooth (2) is connected with the rear pin shaft hole of one right cutting blade (3) through the connecting sheet (5) and the pin shaft (4), the front pin shaft hole of the right cutting blade (3) is connected with the rear pin shaft hole of the next middle guide tooth (2) through the connecting sheet (5) and the pin shaft (4), and the front pin shaft hole of the middle guide tooth (2) is connected with the rear pin shaft hole of the next left cutting blade (1), so on, so that the whole annular saw chain is formed; the left cutting knife (1), the middle guide tooth (2) and the right cutting knife (3) are positioned on the same plane in the middle, and the connecting sheet (5) is respectively positioned at two sides of the left cutting knife (1), the middle guide tooth (2) and the right cutting knife (3).
8. A high efficiency saw chain according to claim 7, wherein: the distance between the external cutting surfaces of the left cutting blade (1) and the right cutting blade (3) is the maximum gap for cutting, and the upper cutting surfaces of the left cutting blade (1) and the right cutting blade (3) are overlapped in the width range of the gap.
9. A high efficiency saw chain according to claim 7, wherein: two pin shaft holes are formed in the middle of the middle guide tooth (2) at intervals, a transmission bulge is arranged at the lower part of the middle guide tooth, and a second bulge is arranged at the upper part of the middle guide tooth.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410204732.6A CN118061301A (en) | 2024-02-25 | 2024-02-25 | High efficiency saw chain and cutting blade thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410204732.6A CN118061301A (en) | 2024-02-25 | 2024-02-25 | High efficiency saw chain and cutting blade thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN118061301A true CN118061301A (en) | 2024-05-24 |
Family
ID=91105237
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202410204732.6A Pending CN118061301A (en) | 2024-02-25 | 2024-02-25 | High efficiency saw chain and cutting blade thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN118061301A (en) |
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2024
- 2024-02-25 CN CN202410204732.6A patent/CN118061301A/en active Pending
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