CN100371629C

CN100371629C - Arc dentiform passive wheel

Info

Publication number: CN100371629C
Application number: CNB200610049412XA
Authority: CN
Inventors: 陈焕春
Original assignee: Individual
Current assignee: Individual
Priority date: 2006-02-04
Filing date: 2006-02-04
Publication date: 2008-02-27
Anticipated expiration: 2026-02-04
Also published as: CN1828091A

Abstract

The present invention discloses a circular arc tooth-shaped driven wheel. A center plate wheel is adopted; a plurality of circular arc tooth-shaped plates vertically crossed with a center plate are arranged on the outer side of the center plate; the outer bus line of the circular arc tooth-shaped plates is a circular arc with the relatively large radius; the plane M composed of the circular arc with the relatively large radius passes through the axial line of an inner hole of a belt wheel; the center of the circular arc is arranged on the intersecting line of the plane M and the center plane of the center plate; in the radial section perpendicular to the plane M, the shape of the outer side of the circular arc tooth-shaped plate is a semicircle and both sides are tangential to the semicircle; the length of the circular arc tooth-shaped plates is the axial width of the driven wheel; the shape of the circular arc tooth-shaped driven wheel is symmetrical with the center plane of the center plate. The driven wheel is a belt wheel with a plurality of circular arcs forming line contact with a bucket belt, keeps the performance of the original driven wheel, greatly reduces the contact area of the driven wheel and the bucket belt, thereby reducing the break increase rate of a bucket elevator.

Description

Arc dentiform passive wheel

Affiliated technical field

The present invention relates to the Transport Machinery product parts, especially the driven wheel of the noria used of grain processing.

Background technique

Noria is to use more Transport Machinery in the grain processing, is generally used for the vertical transport of material.Particularly in the grain processing complete sets of equipment, generally with the mass transport between noria solution manufacturing equipment.Noria is that the driving wheel in storehouse is gone up in utilization and the driven wheel drive winnowing pan band of Lower Hold moves up and down, and the winnowing pan on the winnowing pan band rises to the storehouse with material, flows out at discharge port.During work, the position that driven wheel cooperates with the winnowing pan band is embedded in the material that is promoted in Lower Hold bottom.Material just can enter between winnowing pan band and the driven wheel like this, produces broken under the effect of tension force.This is that noria makes the material generation increase broken main cause.The driven wheel of noria generally is the belt wheel design by the flat belt transmission at present.What also have slots on belt wheel, with the area of contact of minimizing with the winnowing pan band, reduces the fragmentation of material, and its effect is undesirable.

Summary of the invention

The objective of the invention is to overcome the defective of prior art, a kind of arc dentiform passive wheel is provided, it is that line contacts with the winnowing pan band, helps reducing the broken rate of increasing of noria.

The objective of the invention is to realize as follows: the baffle plate wheel that adopts wheel hub, former, arc toothed plate to form, former have uniform a plurality of perpendicular crossing arc toothed plate in the axial centre of wheel hub in the former outside.The outer bus of arc toothed plate is one than large radius arc, and the plane M of its composition is by axially bored line in the belt pulley.The center of circle of circular arc is on the intersection of plane M and former central plane.In the radial section perpendicular to plane M, arc toothed plate outside is shaped as the semicircle of radius r, and both sides and semicircle are tangent.The length of arc toothed plate promptly is the axial width of driven wheel.The shape of arc dentiform passive wheel is for the central plane symmetry of former.

The advantage that this arc dentiform passive wheel has is: driven wheel is a plurality of circular arcs and the belt pulley that winnowing pan band line contacts, and has kept the performance of former driven wheel, has significantly reduced the area of contact of driven wheel and winnowing pan band, thereby has reduced the broken rate of increasing of noria.

Description of drawings

Below in conjunction with accompanying drawing the present invention is further described.

Accompanying drawing 1 is the plan view of arc dentiform passive wheel of the present invention.Fig. 2 is the sectional view of Fig. 1 along the A-A place, and Fig. 3 is the sectional drawing along the B-B place among Fig. 2.

Among the figure: 1, wheel hub, 2, former, 3, arc toothed plate.

Embodiment

With reference to accompanying drawing, arc dentiform passive wheel is designed to baffle plate wheel, and its outer diameter D, endoporus d all select by the design parameter of lift.It is for for preventing winnowing pan band sideslip that driven wheel is designed to circular arc, and this promotes particularly important for bucket type.Former 2 designs a plurality of perpendicular crossing arc toothed plates 3 in the axial centre of wheel hub 1 in former 2 outsides.The outer bus of arc toothed plate 3 is the circular arc of radius R, and width L needs to select by the winnowing pan band, action h=1～3 millimeter, and h got big value when D was big.According to geometrical relationship R=h/2+L ²/ 8h.The plane M that circular arc is formed is by the axis of belt pulley endoporus d.The center of circle of R is on the intersection of this plane and former 2 central planes.Fig. 3 be arc toothed plate 3 perpendicular to plane M, R sectional drawing radially, arc toothed plate 3 outsides are shaped as the semicircle of radius r, the both sides and the semicircle of arc toothed plate 3 are tangent, r=[0.02～0.04] the driven wheel outer diameter D, round numbers.The central plane symmetry of the shape of arc toothed plate 3 and former 2.In the M of plane, the small end size k of arc toothed plate 3 equates that with the numerical value of arc toothed plate 3 outside radius of arc r the central point that inner edge and former 2 intersect is on the circle of D2 at diameter, D2=former 2 cylindrical D1-[24-～40] millimeter.Former 2 cylindrical D1=[0.7～0.8] outer diameter D of arc dentiform passive wheel, thickness c=[0.07～0.08] outer diameter D of arc dentiform passive wheel.The quantity Z of arc toothed plate 3 should meet following condition: the outer tangent line of adjacent 2 tooth circular arcs is to 1/2 little 2～3 millimeters than outer diameter D of the distance in the outer diameter D center of circle, and Z gets even number, in order that be convenient to the measurement of outer diameter D.The wheel hub 1 of arc dentiform passive wheel is a cylinder, its cylindrical D3=[1.8～2] driven wheel endoporus d, length L 1=[2～3] driven wheel endoporus d.Shaft with key way among the arc dentiform passive wheel endoporus d to central plane in the equidistant point of the central plane of adjacent two tooth plates by driven wheel endoporus d axis, have axis at shaft with key way to central plane, and with two tapped holes of endoporus d axis normal.The bolt that is mated works to make the driven wheel axially locating.The outer bus of arc toothed plate 3 is 1 millimeter for the run-out tolerance of endoporus d axis.Arc toothed processing can adopt the special fixture milling to form, also can adopt precision casting after, with arc toothed other sizes, be reference inspection with the endoporus again, repair each circle-arc tooth as benchmark processing driven wheel, it is beated meets tolerance.

Claims

1. arc dentiform passive wheel, by wheel hub, former, arc toothed plate is formed, it is characterized in that: former (2) is in the axial centre of wheel hub (1), in former (2) outside uniform a plurality of perpendicular crossing arc toothed plate (3) is arranged, the outer bus of arc toothed plate (3) is one than large radius arc, the plane of its composition (M) is by driven wheel endoporus (d) axis, the center of circle of circular arc is on the intersection of plane (M) and former (2) central plane, in radial section perpendicular to plane (M), arc toothed plate (3) outside is shaped as the semicircle of radius (r), the both sides and the semicircle of arc toothed plate (3) are tangent, the length of arc toothed plate (3) promptly is the axial width of driven wheel, in plane (M), the small end of arc toothed plate (3) is of a size of (k), the central point that inner edge and former (2) intersect is on the circle of (D2) at diameter, and the shape of arc dentiform passive wheel is for the central plane symmetry of former (2).

2. arc dentiform passive wheel as claimed in claim 1 is characterized in that: circular arc action (h)=1～3 millimeter, the external diameter (D) of semicircle radius (r)=[0.02～0.04] arc dentiform passive wheel of arc toothed plate (3) outside.

3. arc dentiform passive wheel as claimed in claim 1 is characterized in that: the external diameter (D) of former (2) cylindrical (D1)=[0.7～0.8] arc dentiform passive wheel, the external diameter (D) of thickness (c)=[0.07～0.08] arc dentiform passive wheel.

4. arc dentiform passive wheel as claimed in claim 1 is characterized in that: the wheel hub of arc dentiform passive wheel (1) is a cylinder, its cylindrical (D3)=[1.8～2] driven wheel endoporus (d), length (L1)=[2～3] driven wheel endoporus (d).

5. arc dentiform passive wheel as claimed in claim 1 is characterized in that: the shaft with key way in the arc dentiform passive wheel endoporus (d) to central plane in the equidistant point of the central plane of adjacent two tooth plates by driven wheel endoporus (d) axis; Have axis at shaft with key way in central plane, and with two tapped holes of endoporus (d) axis normal.