CN2303431Y

CN2303431Y - Harrow teeth

Info

Publication number: CN2303431Y
Application number: CN 97236396
Authority: CN
Inventors: 吴若峰; 吴德华; 吴群华; 吴为华; 杨国会
Original assignee: 吴若峰
Priority date: 1997-06-24
Filing date: 1997-06-24
Publication date: 1999-01-13
Anticipated expiration: 2007-06-24

Abstract

The utility model relates to a harrow tooth for an agricultural harrow, which is characterized in that a tooth body 9 of the harrow tooth is a trigonous conical body; the cross section of the trigonous conical body is an isosceles triangle; a guide edge 5 (which can be also an arc) of the isosceles triangle is crossed with trailing edges 6, 7 in the position of a tooth tip. Compared with the prior art (the tooth body is a quadrangular conical body), the utility model has the advantages of high crushing rate, easy removal of ruderal, little resistance, high durability, etc.

Description

A kind of rake teeth

The utility model relates to the rake teeth of the agricultural rake that a kind of broken soil block uses.

Existing rake teeth is shaped as four stupefied cones, and it is a plane or curved surface slightly that native face is met in fragmentation, so its reduction resistant force is big, percentage of damage is low, very easily tangle thing such as weeds, when serious even can't use.People are with use for a long time, and the no one expects doing a little improvement on rake teeth.The applicant does not find desirable technical solution as yet through extensively retrieval.

The purpose of this utility model is designed a kind of novel rake teeth exactly, to solve big, the easy to hang weeds of resistance that prior art exists, the shortcoming that percentage of damage is low.

To achieve these goals, the utility model has adopted following technical proposals:

The denticle of rake teeth is made the triangular cone, its cross section is isosceles triangle, the guide margin that triangle isosceles limit intersection point forms (be the rib of cone, meet the broken rib of soil and claim guide margin) intersects at crown (the triangular vertex of a cone) with formed two lagging edges in two summits, triangle base.Generally speaking, guide margin is that straight line gets final product, and also guide margin can be made camber line, as one section part that curvature is very little in circumference, parabola, hyperbola or the ellipse.

Because to have adopted technique scheme, guide margin of the present utility model is a rib sword, solid percentage of damage height, resistance are little, and are difficult for tangling thing such as weeds, so its high efficiency, rake teeth are durable in use, through the reality use, have proved above-mentioned excellent results.

In order to describe the utility model in further detail, following routine accompanying drawing provides a most preferred embodiment of the present utility model.

Description of drawings:

Fig. 1 is a stereogram of the present utility model;

Fig. 2 is the A-A face cutaway view of Fig. 1.

As shown in Figure 1, rake teeth is made up of two parts, i.e. tooth root 1 and denticle 9, and wherein tooth root 1 is made one with denticle 9, and it is positioned at the denticle upper end, and its effect mainly is to be connected on (as welding) rake frame.Denticle 9 is the triangular cone, and its cross section is isosceles triangle, and shown in the A-A cutaway view of Fig. 2, from Fig. 1 upper end, formed two lagging edges 6,7 in the formed guide margin 5 of intersection point on two isosceles limits 2,3 of denticle and two summits, base meet at crown 8 downwards; Also guide margin can be made camber line, shown in imaginary point setting-out 4 among the figure, the mathematical law of camber line can adopt the very little arc of bent rule, better effects if so in actual use in circumference, parabola, hyperbola or the ellipse.

Claims

1, a kind of rake teeth, it comprises tooth root, denticle, it is characterized in that denticle is the triangular cone, and its cross section is isosceles triangle, and the guide margin (rib) that the intersection point on triangle two isosceles limits forms intersects at crown with formed two lagging edges in two summits, triangle base (rib).

2, rake teeth according to claim 1 is characterized in that described guide margin is camber line, and the rule of camber line is circumference, parabola, hyperbola or ellipse.