CN102022376B - Suction fan impeller of mower - Google Patents
Suction fan impeller of mower Download PDFInfo
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- CN102022376B CN102022376B CN2010105361135A CN201010536113A CN102022376B CN 102022376 B CN102022376 B CN 102022376B CN 2010105361135 A CN2010105361135 A CN 2010105361135A CN 201010536113 A CN201010536113 A CN 201010536113A CN 102022376 B CN102022376 B CN 102022376B
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- 238000003466 welding Methods 0.000 description 23
- 244000025254 Cannabis sativa Species 0.000 description 13
- 229910000831 Steel Inorganic materials 0.000 description 10
- 239000010959 steel Substances 0.000 description 10
- 241000196324 Embryophyta Species 0.000 description 9
- 238000000034 method Methods 0.000 description 5
- 238000005520 cutting process Methods 0.000 description 3
- 241000244831 Agrimonia gryposepala Species 0.000 description 2
- 238000011981 development test Methods 0.000 description 2
- 238000000605 extraction Methods 0.000 description 2
- 239000010902 straw Substances 0.000 description 2
- 238000004804 winding Methods 0.000 description 2
- 241000276425 Xiphophorus maculatus Species 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
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Abstract
The invention relates to a suction fan impeller of a mower, which is characterized in that blades are arranged on a wheel disc. In the wheel disc, the periphery of a hub is provided with a blade disc, 2-4 blades are uniformly distributed on the blade disc, the inner ends of the blades are in overlap joint with the outer end of the hub, and the included angle Alpha between the center lines of the blades and the diameter which is tangential to the inner ends is 30-80 degrees; in the blades, the front side surfaces of the blades are shaped as a parallelogram, the included angle Beta between the inner side edge and the bottom edge of the parallelogram is 50-80 degrees; the back side surfaces of the blades are shaped as a trapezoid, the outer side edge of the trapezoid is perpendicular to the bottom edge, the plane in which the upper bottom edge of the trapezoid and the upper bottom edge of the parallelogram are located is parallel to the plane in which the lower bottom edge of the trapezoid and the lower bottom edge of the parallelogram are located; the included angles Gamma between the front side surfaces and the back side surfaces of the blades are 20-45 degrees; the inner ends of the blades are an integrated circular arc surface with radius of 15-30 millimeters which is tangential to the front outer side surfaces and the back outer side surfaces; and the outer ends of the front side surfaces of the blades are coupled with the inner surfaces of the back side surfaces.
Description
Technical field
The invention belongs to mowing equipment or device technique field, be specifically related to the component of mowing machine.
Background technique
The both sides of airport runways, connecting taxiway, taxiway, hot season in summer weed growth vigorous, the height uneven; There are some grass to look very high, have some grass to look low, the weeds of the both sides of runway, connecting taxiway, taxiway; Shelter from the light of airport runways, connecting taxiway, taxiway both sides; Have influence on flight safety, these weeds need be cut off and clear up termly.
The mowing machine of selling in the market mainly contains three kinds, and a kind of is large-scale mowing machine, by the rotation of engine drives blade, mows; This mowing machine is mainly used on the grassland mows, and grass cuts down with after airing regathers back stores for future use, and large-scale mowing machine can not cut low weeds; And grass can not be cleaned out the weeds of being cut down after cutting down at once, after weeds are rotten, infested; Attract many birds, have influence on flight safety, also need manual work to clear up.Another kind is small-sized mowing machine, drives the straight blade shearing by a put-put and mows, and this mowing machine is mainly used in the lawn of park public place of entertainment plantation and mows, and the grass on lawn is grown all lowlyer, after grass is cut down, is cleared up by manual work again.Also has a kind of large-scale associating mowing machine; Its main structure is that the rotation of engine drives blade is mowed, and engine drives induced draft fan rotation simultaneously produces negative pressure the grass that is cut is down collected, and the blade of the induced draft fan impeller of this mowing machine is for being reversed into the several angle platy structure; In the mowing process; Many grass that cut off have been twined on the blade, mowing machine running a period of time, the grass on the cleaning blade that need stop; Just can proceed cutting operation, have influence on the mowing efficient of associating mowing machine.
Above-mentioned three kinds of mowing machines can not be suitable for and cut off the uneven on earth weeds in airport runways, connecting taxiway, taxiway both sides.For this reason, inventor of the present invention has developed a kind of associating mowing machine that is suitable for cutting airport runways, connecting taxiway, taxiway both sides grass, and the urgent technical problem that solves of the current need of the induced draft fan of this machine provides a kind of straw winding, impeller that exhausting efficient is high.
Summary of the invention
Technical problem to be solved by this invention is to overcome the shortcoming of the induced draft fan impeller of above-mentioned mowing machine, and the induced draft fan impeller of a kind of reasonable in design, straw winding, mowing machine that exhausting efficient is high is provided.
Solving the problems of the technologies described above the technological scheme that is adopted is: wheel disc is provided with blade.
Above-mentioned wheel disc is: the outer at wheel hub is provided with cover plate.
Above-mentioned blade has 2～4 to be uniformly distributed with and to be arranged on the cover plate, the inner of blade and the outer end of wheel hub overlap joint, and the center line of blade is 30 °～80 ° with angle between the tangent diameter in blade the inner.
Blade of the present invention is: the leading flank of blade is a parallelogram, and the angle β on the inner side edge of parallelogram and base is 50 °～80 °; The trailing flank of blade is that trapezoidal, trapezoidal outer side is vertical with the base, the plane parallel that the plane at place, base and trapezoidal bottom and parallelogram bottom belong on the trapezoidal last base peace row quadrilateral; The leading flank of blade and the angle γ between the trailing flank are 20 °～45 °; The inner of blade is with anterolateral surface and the back outer side surface is tangent and radius R that be connected as a single entity is the arc surface of 15～30mm, and the leading flank outer end of blade connects with the trailing flank internal surface.
Blade of the present invention is: the leading flank of blade is a parallelogram, and the angle β the best on the inner side edge of parallelogram and base is 65 °; The trailing flank of blade is that trapezoidal, trapezoidal outer side is vertical with the base, the plane parallel that the plane at place, base and trapezoidal bottom and parallelogram bottom belong on the trapezoidal last base peace row quadrilateral; The leading flank of blade and the angle γ the best between the trailing flank are 30 °; The inner of blade is with anterolateral surface and the back outer side surface is tangent and radius R the best that be connected as a single entity is the arc surface of 20mm.
Blade of the present invention has 3 to be uniformly distributed with and to be arranged on the cover plate, the inner of blade and the outer end of wheel hub overlap joint, and the center line of blade is 60 ° with angle the best between the tangent diameter in blade the inner.
Blade of the present invention adopts the curl outer end of back leading flank of steel plate to process with the internal surface welding of trailing flank, and leading flank is that parallelogram, trailing flank are trapezoidal, innerly to be and leading flank and the tangent arc surface of trailing flank.Because the present invention adopts the blade of this structure, the blade welding is connected in wheel disc constitutes the induced draft fan impeller, the induced draft fan impeller is installed on the induced draft fan of mowing machine; Process reaches 6 months development test; Induced draft fan can with mowing machine cut careless extraction, do not twine grass on the blade, stickweed not yet.Mowing machine of the present invention is installed, is applicable to very much and cuts airport runways, taxiway, the rugged weeds in connecting taxiway both sides.
Description of drawings
Fig. 1 is the plan view of the embodiment of the invention 1.
Fig. 2 is the A-A sectional view of Fig. 1.
Fig. 3 is the plan view of blade 2 among Fig. 1.
Fig. 4 is the plan view of Fig. 3.
Embodiment
To further explain of the present invention, but the invention is not restricted to these embodiments below in conjunction with accompanying drawing and embodiment.
In Fig. 1,2, the induced draft fan impeller of the mowing machine of present embodiment is made up of wheel disc 1, blade 2 connections.
The wheel disc 1 of present embodiment is made up of wheel hub 1-1, cover plate 1-2 connection.The outer rivet of continuing to use of wheel hub 1-1 connects formation wheel disc 1 with cover plate 1-2, wheel hub 1-1 and cover plate 1-2 also can adopt the screw threads for fastening coupling to be fixedly connected.On the cover plate 1-2 of wheel disc 1, be uniformly distributed with welding and be connected with 3 blades 2, the outer end overlap joint of the inner of blade 2 and wheel hub 1-1, the angle between the tangent diameter in the center line of blade 2 and blade 2 the inners is 60 °.
Fig. 3,4 has provided the structural representation of present embodiment blade 2.In Fig. 3,4, the blade 2 of present embodiment is that the outer end of leading flank after being curled by a slice steel plate and the internal surface welding of trailing flank are processed.The leading flank of blade 2 is a parallelogram, and the angle β on the inner side edge of the parallelogram of blade 2 and base is 65 °.The trailing flank of blade 2 is that trapezoidal, trapezoidal outer side is vertical with the base, the plane parallel that the plane at place, base and trapezoidal bottom and parallelogram bottom belong on the trapezoidal last base peace row quadrilateral.Angle γ between the anteromedial surface of blade 2 and the back inner side surface is 30 °.The inner of blade 2 is an arc surface tangent with the back outer side surface with anterolateral surface and that be connected as a single entity, and the radius R of this arc surface is 20mm.Because the present invention adopts the blade 2 of this structure; Blade 2 welding are connected in wheel disc 1 constitute the induced draft fan impeller; The induced draft fan impeller is installed on the induced draft fan of mowing machine, through reaching 6 months development test, induced draft fan can with mowing machine cut careless extraction; Do not twine grass on the blade 2, yet stickweed not on the blade 2.Mowing machine of the present invention is installed, is applicable to very much the grass that cuts airport runways, taxiway, the rugged weeds in connecting taxiway both sides and lodging.
In the present embodiment, identical with embodiment 1 at the center line of number, the blade 2 of welding blade 2 on the cover plate 1-2 of wheel disc 1 with angle between the tangent diameter in the inner.The blade 2 of present embodiment is that the outer end of leading flank after being curled by a slice steel plate and the internal surface welding of trailing flank are processed, and the leading flank of blade 2 is a parallelogram, and the angle β on the inner side edge of the parallelogram of blade 2 and base is 50 °.The trailing flank of blade 2 is that trapezoidal, trapezoidal outer side is vertical with the base, the plane parallel that the plane at place, base and trapezoidal bottom and parallelogram bottom belong on the trapezoidal last base peace row quadrilateral.Angle γ between the inboard internal surface of the preceding inboard internal surface of blade 2 and back is 20 °.The inner of blade 2 is with anterolateral surface and the back outer side surface is tangent and radius R that be connected as a single entity is the arc surface of 15mm.The connecting relation of other component and component is identical with embodiment 1.
Embodiment 3
In the present embodiment, identical with embodiment 1 at the center line of number, the blade 2 of welding blade 2 on the cover plate 1-2 of wheel disc 1 with angle between the tangent diameter in the inner.The blade 2 of present embodiment is that the outer end of leading flank after being curled by a slice steel plate and the internal surface welding of trailing flank are processed, and the leading flank of blade 2 is a parallelogram, and the angle β on the inner side edge of the parallelogram of blade 2 and base is 80 °.The trailing flank of blade 2 is that trapezoidal, trapezoidal outer side is vertical with the base, the plane parallel that the plane at place, base and trapezoidal bottom and parallelogram bottom belong on the trapezoidal last base peace row quadrilateral.Angle γ between the anteromedial surface of blade 2 and the back inner side surface is 45 °.The inner of blade 2 is with anterolateral surface and the back outer side surface is tangent and radius R that be connected as a single entity is the arc surface of 30mm.The connecting relation of other component and component is identical with embodiment 1.
Embodiment 4
In the present embodiment, identical with embodiment 1 at the center line of number, the blade 2 of welding blade 2 on the cover plate 1-2 of wheel disc 1 with angle between the tangent diameter in the inner.The blade 2 of present embodiment is that the outer end of leading flank after being curled by a slice steel plate and the internal surface welding of trailing flank are processed, and the leading flank of blade 2 is a parallelogram, and the angle β on the inner side edge of the parallelogram of blade 2 and base is 50 °.The trailing flank of blade 2 is that trapezoidal, trapezoidal outer side is vertical with the base, the plane parallel that the plane at place, base and trapezoidal bottom and parallelogram bottom belong on the trapezoidal last base peace row quadrilateral.Angle γ between the anteromedial surface of blade 2 and the back inner side surface is 20 °.The inner of blade 2 is with anterolateral surface and the back outer side surface is tangent and radius R that be connected as a single entity is the arc surface of 30mm.The connecting relation of other component and component is identical with embodiment 1.
Embodiment 5
In the present embodiment, identical with embodiment 1 at the center line of number, the blade 2 of welding blade 2 on the cover plate 1-2 of wheel disc 1 with angle between the tangent diameter in the inner.The blade 2 of present embodiment is that the outer end of leading flank after being curled by a slice steel plate and the internal surface welding of trailing flank are processed, and the leading flank of blade 2 is a parallelogram, and the angle β on the inner side edge of the parallelogram of blade 2 and base is 50 °.The trailing flank of blade 2 is that trapezoidal, trapezoidal outer side is vertical with the base, the plane parallel that the plane at place, base and trapezoidal bottom and parallelogram bottom belong on the trapezoidal last base peace row quadrilateral.Angle γ between the anteromedial surface of blade 2 and the back inner side surface is 45 °.The inner of blade 2 is with anterolateral surface and the back outer side surface is tangent and radius R that be connected as a single entity is the arc surface of 15mm.The connecting relation of other component and component is identical with embodiment 1.
Embodiment 6
In the present embodiment, identical with embodiment 1 at the center line of number, the blade 2 of welding blade 2 on the cover plate 1-2 of wheel disc 1 with angle between the tangent diameter in the inner.The blade 2 of present embodiment is that the outer end of leading flank after being curled by a slice steel plate and the internal surface welding of trailing flank are processed, and the leading flank of blade 2 is a parallelogram, and the angle β on the inner side edge of the parallelogram of blade 2 and base is 50 °.The trailing flank of blade 2 is that trapezoidal, trapezoidal outer side is vertical with the base, the plane parallel that the plane at place, base and trapezoidal bottom and parallelogram bottom belong on the trapezoidal last base peace row quadrilateral.Angle γ between the anteromedial surface of blade 2 and the back inner side surface is 45 °.The inner of blade 2 is with anterolateral surface and the back outer side surface is tangent and radius R that be connected as a single entity is the arc surface of 30mm.The connecting relation of other component and component is identical with embodiment 1.
Embodiment 7
In the present embodiment, identical with embodiment 1 at the center line of number, the blade 2 of welding blade 2 on the cover plate 1-2 of wheel disc 1 with angle between the tangent diameter in the inner.The blade 2 of present embodiment is that the outer end of leading flank after being curled by a slice steel plate and the internal surface welding of trailing flank are processed, and the leading flank of blade 2 is a parallelogram, and the angle β on the inner side edge of the parallelogram of blade 2 and base is 80 °.The trailing flank of blade 2 is that trapezoidal, trapezoidal outer side is vertical with the base, the plane parallel that the plane at place, base and trapezoidal bottom and parallelogram bottom belong on the trapezoidal last base peace row quadrilateral.Angle γ between the anteromedial surface of blade 2 and the back inner side surface is 20 °.The inner of blade 2 is with anterolateral surface and the back outer side surface is tangent and radius R that be connected as a single entity is the arc surface of 15mm.The connecting relation of other component and component is identical with embodiment 1.
Embodiment 8
In the present embodiment, identical with embodiment 1 at the center line of number, the blade 2 of welding blade 2 on the cover plate 1-2 of wheel disc 1 with angle between the tangent diameter in the inner.The blade 2 of present embodiment is that the outer end of leading flank after being curled by a slice steel plate and the internal surface welding of trailing flank are processed, and the leading flank of blade 2 is a parallelogram, and the angle β on the inner side edge of the parallelogram of blade 2 and base is 80 °.The trailing flank of blade 2 is that trapezoidal, trapezoidal outer side is vertical with the base, the plane parallel that the plane at place, base and trapezoidal bottom and parallelogram bottom belong on the trapezoidal last base peace row quadrilateral.Angle γ between the anteromedial surface of blade 2 and the back inner side surface is 45 °.The inner of blade 2 is with anterolateral surface and the back outer side surface is tangent and radius R that be connected as a single entity is the arc surface of 15mm.The connecting relation of other component and component is identical with embodiment 1.
Embodiment 9
In the present embodiment, identical with embodiment 1 at the center line of number, the blade 2 of welding blade 2 on the cover plate 1-2 of wheel disc 1 with angle between the tangent diameter in the inner.The blade 2 of present embodiment is that the outer end of leading flank after being curled by a slice steel plate and the internal surface welding of trailing flank are processed, and the leading flank of blade 2 is a parallelogram, and the angle β on the inner side edge of the parallelogram of blade 2 and base is 80 °.The trailing flank of blade 2 is that trapezoidal, trapezoidal outer side is vertical with the base, the plane parallel that the plane at place, base and trapezoidal bottom and parallelogram bottom belong on the trapezoidal last base peace row quadrilateral.Angle γ between the anteromedial surface of blade 2 and the back inner side surface is 20 °.The inner of blade 2 is with anterolateral surface and the back outer side surface is tangent and radius R that be connected as a single entity is the arc surface of 30mm.The connecting relation of other component and component is identical with embodiment 1.
Embodiment 10
In above embodiment 1～9, on the cover plate 1-2 of wheel disc 1, be uniformly distributed with welding and be connected with 2 blades 2, the outer end overlap joint of the inner of blade 2 and wheel hub 1-1, the angle between the tangent diameter in the center line of blade 2 and blade 2 the inners is 80 °.The connecting relation of other component and component is identical with respective embodiments.
Embodiment 11
In above embodiment 1～9, on the cover plate 1-2 of wheel disc 1, be uniformly distributed with welding and be connected with 4 blades 2, the outer end overlap joint of the inner of blade 2 and wheel hub 1-1, the angle between the tangent diameter in the center line of blade 2 and blade 2 the inners is 30 °.The connecting relation of other component and component is identical with respective embodiments.
Also can design the induced draft fan impeller of the mowing machine of other a kind of concrete structure according to above-mentioned principle, but all within protection scope of the present invention.
Claims (3)
1. the induced draft fan impeller of a mowing machine, wheel disc (1) is provided with blade (2), it is characterized in that described wheel disc (1) is: be provided with cover plate (1-2) in the outer of wheel hub (1-1); Described blade (2) has 2～4 to be uniformly distributed with and to be arranged on the cover plate (1-2), the outer end overlap joint of the inner of blade (2) and wheel hub (1-1), and the center line of blade (2) is 30 °～80 ° with angle (α) between the tangent diameter in blade (2) the inner; Described blade (2) is: the leading flank of blade (2) is a parallelogram, and the inner side edge of parallelogram and the angle on base (β) are 50 °～80 °; The trailing flank of blade (2) is that trapezoidal, trapezoidal outer side is vertical with the base, the plane parallel that the plane at place, base and trapezoidal bottom and parallelogram bottom belong on the trapezoidal last base peace row quadrilateral; The leading flank of blade (2) and the angle between the trailing flank (γ) are 20 °～45 °; The inner of blade (2) is with anterolateral surface and the back outer side surface is tangent and radius (R) that be connected as a single entity is the arc surface of 15～30mm, and the leading flank outer end of blade (2) connects with the trailing flank internal surface.
2. according to the induced draft fan impeller of the described mowing machine of claim 1, it is characterized in that: described blade (2) is: the leading flank of blade (2) is a parallelogram, and the inner side edge of parallelogram and the angle on base (β) are 65 °; The trailing flank of blade (2) is that trapezoidal, trapezoidal outer side is vertical with the base, the plane parallel that the plane at place, base and trapezoidal bottom and parallelogram bottom belong on the trapezoidal last base peace row quadrilateral; Angle (γ) between the anteromedial surface of blade (2) and the back inner side surface is 30 °; The inner of blade (2) is with anterolateral surface and the back outer side surface is tangent and radius (R) that be connected as a single entity is the arc surface of 20mm.
3. according to the induced draft fan impeller of the described mowing machine of claim 1; It is characterized in that: described blade (2) has 3 to be uniformly distributed with and to be arranged on the cover plate (1-2); The outer end of the inner of blade (2) and wheel hub (1-1) overlap joint, the center line of blade (2) is 60 ° with angle (α) between the tangent diameter in blade (2) the inner.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105361135A CN102022376B (en) | 2010-11-05 | 2010-11-05 | Suction fan impeller of mower |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105361135A CN102022376B (en) | 2010-11-05 | 2010-11-05 | Suction fan impeller of mower |
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| Publication Number | Publication Date |
|---|---|
| CN102022376A CN102022376A (en) | 2011-04-20 |
| CN102022376B true CN102022376B (en) | 2012-08-15 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2010105361135A Expired - Fee Related CN102022376B (en) | 2010-11-05 | 2010-11-05 | Suction fan impeller of mower |
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| CN1343835A (en) * | 2000-09-13 | 2002-04-10 | 本田技研工业株式会社 | Device for preventing foreign substance from winding in working engine |
| CN1510312A (en) * | 2002-12-25 | 2004-07-07 | 株式会社江波精机 | Multiblade fan and producing method thereof |
| CN201518584U (en) * | 2009-09-11 | 2010-07-07 | 镇江益林金刚石工具有限公司 | Saw blade used for mowing |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102022376A (en) | 2011-04-20 |
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