CN102022376A - Suction fan impeller of mower - Google Patents
Suction fan impeller of mower Download PDFInfo
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- CN102022376A CN102022376A CN 201010536113 CN201010536113A CN102022376A CN 102022376 A CN102022376 A CN 102022376A CN 201010536113 CN201010536113 CN 201010536113 CN 201010536113 A CN201010536113 A CN 201010536113A CN 102022376 A CN102022376 A CN 102022376A
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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, height is 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 Xiao Shouing mainly contains three kinds in the market, and a kind of is large-scale mowing machine, drives the blade rotation by motor, mow, 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 rotted, infested, attract many birds, have influence on flight safety, also need manually 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, again by manually clearing up.Also has a kind of large-scale associating mowing machine, its main structure is that the rotation of motor drive blade is mowed, the rotation of the induced draft fan of motor drive simultaneously produces negative pressure the grass that is cut is down collected, 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 of cleaning on the blade 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, the present inventor 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 uniform being 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 α 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 at place, base and trapezoidal bottom and the plane parallel at place, parallelogram bottom 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 at place, base and trapezoidal bottom and the plane parallel at place, parallelogram bottom 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 uniform being 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 α 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 make 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 mowing machine can be 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
The present invention is described in more detail below in conjunction with drawings and Examples, but the invention is not restricted to these embodiments.
In Fig. 1,2, the induced draft fan impeller of the mowing machine of present embodiment is made of wheel disc 1, blade 2 connections.
The wheel disc 1 of present embodiment is made 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.Uniform welding is connected with 3 blades 2 on the cover plate 1-2 of wheel disc 1, the outer end of the inner of blade 2 and wheel hub 1-1 overlap joint, and the center line of blade 2 is 60 ° with angle α between the tangent diameter in blade 2 the inners.
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 made.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 at place, base and trapezoidal bottom and the plane parallel at place, parallelogram bottom 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, process reaches 6 months development test, induced draft fan mowing machine can be 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 α 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 made, 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 at place, base and trapezoidal bottom and the plane parallel at place, parallelogram bottom 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 α 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 made, 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 at place, base and trapezoidal bottom and the plane parallel at place, parallelogram bottom 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 α 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 made, 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 at place, base and trapezoidal bottom and the plane parallel at place, parallelogram bottom 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 α 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 made, 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 at place, base and trapezoidal bottom and the plane parallel at place, parallelogram bottom 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 α 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 made, 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 at place, base and trapezoidal bottom and the plane parallel at place, parallelogram bottom 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 α 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 made, 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 at place, base and trapezoidal bottom and the plane parallel at place, parallelogram bottom 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 α 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 made, 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 at place, base and trapezoidal bottom and the plane parallel at place, parallelogram bottom 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 α 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 made, 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 at place, base and trapezoidal bottom and the plane parallel at place, parallelogram bottom 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, uniform welding is connected with 2 blades 2 on the cover plate 1-2 of wheel disc 1, the outer end of the inner of blade 2 and wheel hub 1-1 overlap joint, and the center line of blade 2 is 80 ° with angle α between the tangent diameter in blade 2 the inners.The connecting relation of other component and component is identical with respective embodiments.
Embodiment 11
In above embodiment 1~9, uniform welding is connected with 4 blades 2 on the cover plate 1-2 of wheel disc 1, the outer end of the inner of blade 2 and wheel hub 1-1 overlap joint, and the center line of blade 2 is 30 ° with angle α between the tangent diameter in blade 2 the inners.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 another concrete structure according to above-mentioned principle, but all within protection scope of the present invention.
Claims (4)
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 uniform being arranged on the cover plate (1-2), the outer end of the inner of blade (2) and wheel hub (1-1) overlap joint, and the center line of blade (2) is 30 °~80 ° with angle α between the tangent diameter in blade (2) the inner.
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 angle β on the inner side edge of parallelogram and base is 50 °~80 °; The trailing flank of blade (2) is that trapezoidal, trapezoidal outer side is vertical with the base, the plane at place, base and trapezoidal bottom and the plane parallel at place, parallelogram bottom 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.
3. 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 at place, base and trapezoidal bottom and the plane parallel at place, parallelogram bottom 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.
4. 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 uniform being 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.
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CN2010105361135A CN102022376B (en) | 2010-11-05 | 2010-11-05 | Suction fan impeller of mower |
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CN2010105361135A CN102022376B (en) | 2010-11-05 | 2010-11-05 | Suction fan impeller of mower |
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Effective date of registration: 20180712 Address after: 453000 456 Hua Lan Road, Xinxiang Development Zone, Henan Patentee after: Henan new road air traffic Technology Co., Ltd. Address before: 453003 456 Hua Lan Road, Xinxiang Development Zone, Henan Patentee before: Nie Wei |