CN2250004Y

CN2250004Y - Rotary cultivator

Info

Publication number: CN2250004Y
Application number: CN 95243672
Authority: CN
Inventors: 顾理元; 唐加乐
Original assignee: Individual
Current assignee: Individual
Priority date: 1995-03-30
Filing date: 1995-03-30
Publication date: 1997-03-26
Anticipated expiration: 2005-03-30

Abstract

The utility model relates to a rotary cultivator. A rotary cultivator has common malfunction that a spline arranged on the right end of a triaxiality (8) of the rotary cultivator fails. The utility model is characterized in that a radial bearing (9) is adopted on the left end of the triaxiality (8) of the rotary cultivator, and a circular bead (12) an outer diameter of which is larger than an inner diameter of a bearing is arranged on the right end of the triaxiality; therefore, not only the root cause of the left shift of the triaxiality (8) is eliminated, but also the practical possibility of the left shift of the triaxiality (8) is stopped, a spline can always be guaranteed to engage with full-length, and thus, the damage of the utility model is reduced.

Description

Rotovator

The utility model is a kind of rotovator that is dragged by tractor, is used for the farmland and ploughs rake, belongs to the agricultural machinery scope.

Existing rotovator is made up of central tooth roller box, three, side gear-box and rotary ploughing cutter shaft etc.Wherein three right-hand member is a bevel gear, and left end is a spur gear.For the axial force that the statocone gear produces, conical bearing is all used at these two ends.Because conical bearing itself can produce additional axial force, the mutual balance of axial force that the additional axial force that the right-hand member bearing produces produces with bevel gear, the additional axial force that the left end bearing produces but acts on the right-hand member round nut fully.When the right-hand member round nut was loosening, three moved to left, and spline can not total length mesh, and three just can be because of the very fast damage of right-hand member splined end overload.

Thereby the purpose of this utility model is to design a kind of a kind of novel rotovator that three sources of damage significantly reduce the rotovator spoilage of eliminating.

The purpose of this utility model is achieved in that

1, the right-hand member three of rotovators uses conical bearing (or angular contact ball bearing), and left end uses radial bearing;

2, on conical bearing (or angular contact ball bearing) right side, make shoulder for three, the shoulder external diameter is greater than the internal diameter of conical bearing (or angular contact ball bearing).

The utility model compared with prior art has following advantage:

1, left end radial bearing, radial bearing does not produce additional axial force, can eliminate to make round nut damage and make three basic reasons that move to left.

2, the external diameter of conical bearing (or angular contact ball bearing) right side three pillow blocks shoulder can be stopped three and move to left greater than conical bearing (or angular contact ball bearing) internal diameter, guarantees that three splines remain the total length engagement.

Concrete structure of the present utility model is provided by following examples and accompanying drawing.

Fig. 1 is the signal of rotovator overall structure, and Fig. 2 is left girder assembly.

Rotovator is made up of central tooth roller box (1), left girder (2), side gear-box (3) and rotary ploughing cutter shaft (4) etc.

Three (8) are contained in girder (2) lining, a rotovator left side, and its right-hand member bevel gear (6) is clipped between round nut (5) and the conical bearing (or angular contact ball bearing) (7).Its left end spur gear (10) is clipped between round nut (11) and the radial bearing (9), between bevel gear (6) and conical bearing (or angular contact ball bearing) (7), three (8) have done shoulder (12), and the external diameter of shoulder (12) is greater than the internal diameter of conical bearing (or angular contact ball bearing) (7).

During work, axial force that bevel gear (6) produces and conical bearing (or angular contact ball bearing) (7) be balance mutually, in addition, three (8) or else are subjected to any axial force, therefore it can not produce axially and move to left, three pillow blocks shoulder (12) external diameter is greater than the internal diameter of conical bearing (or angular contact ball bearing) (7) in addition, and three (8) more impossible generations axially move to left.

Since three (8) can axially not move to left, the right-hand member spline just can not damage because of the end overload so.

Need to prove that also because conical bearing (or angular contact ball bearing) can produce additional axial force, generally they must mounted in pairs, as using separately, then must be suffered axial force greater than additional axial force that bearing produced.The utility model just so, so can use separately.(the bearing title is pressed GB4457～4460-84 and GB131-83 definition)

Claims

1, be used to the rotovator of ploughing, its left girder (2) right side connects central tooth roller box (1), and a left side connects side gear-box (3), is rotary ploughing cutter shaft (4) below it, it is characterized in that:

The right-hand member of A, three (8) uses conical bearing (7), and left end uses radial bearing (9);

B, three pillow blocks shoulders (12) are close to the right side of conical bearing (7), and the external diameter of shoulder (12) is greater than the internal diameter of conical bearing (7).

2, rotovator according to claim 1 is characterized in that: conical bearing (7) also can be an angular contact ball bearing (7).