CN103591121B - Eccentric drive shaft - Google Patents

Abstract

The invention relates to an eccentric transmission shaft, which includes a shaft body and a first shaft head and a second shaft head located at both ends of the shaft body. The axes of the first shaft head and the second shaft head are coaxial and parallel to the axis of the shaft body. The first shaft head, the second shaft head and the shaft body are split structures, and the first shaft head and the second shaft head are respectively fixed on the shaft body by fasteners. The first shaft head and the second shaft head are respectively fixed on the first clamp seat and the second clamp seat, and the first clamp seat and the second clamp seat are respectively provided with shafts parallel to the axes of the first shaft head and the second shaft head. The neck hole and the wall of the journal hole are provided with an axial block and an axial slot, and coaxial through holes and threaded holes are respectively opened on both sides of the slot; A journal that matches the hole, and a card slot that matches the axial block is arranged on the journal. The present invention has a split structure, and only the first shaft head or the second shaft head needs to be replaced when worn out, instead of the entire eccentric drive shaft, thereby saving costs.

Description

Eccentric drive shaft

technical field

The invention relates to shaft parts in machines, in particular to an eccentric transmission shaft.

Background technique

The general transmission shaft can only drive the workpiece to rotate, but the eccentric shaft can not only transmit the rotation, but also the revolution. Eccentric shafts are widely used in various machinery and equipment.

Commonly used eccentric shafts include a shaft body and eccentric shaft heads located at both ends of the shaft body. This kind of eccentric shaft generally has an integrated structure. When the shaft head wears out, only the whole eccentric shaft can be replaced, which causes great waste and increases the use cost of the eccentric shaft.

Contents of the invention

The present invention aims at the above problems, and provides an eccentric transmission shaft that does not need to be replaced as a whole when the shaft head is worn, and can reduce the use cost.

According to the technical solution of the present invention: an eccentric transmission shaft, including a shaft body and a first shaft head and a second shaft head located at both ends of the shaft body, the axes of the first shaft head and the second shaft head are shaft and parallel to the axis of the shaft body, the first shaft head and the second shaft head are separated from the shaft body, and the first shaft head and the second shaft head are respectively It is fixed on the shaft body by fasteners.

The first shaft head and the second shaft head are respectively fixed on the first clamping seat and the second clamping seat, and the first clamping seat and the second clamping seat are respectively opened with the first shaft A shaft journal hole parallel to the axis of the shaft head and the second shaft head. The wall of the journal hole is provided with an axial block and an axial slot. Both sides of the slot are respectively provided with coaxial through holes holes and threaded holes; the two ends of the shaft body are respectively provided with journals matching the journal holes, and the journals are provided with slots matching the axial clamping blocks.

The first shaft head and the second shaft head are respectively welded on the first clamp seat and the second clamp seat.

The structural dimensions of the first shaft head and the second shaft head are the same, and the first clamping seat and the second clamping seat are made symmetrically.

The shaft body is provided with key grooves.

The technical effect of the present invention is: the present invention is a split structure, which is assembled from three parts: the first shaft head, the second shaft head and the shaft body. When the first shaft head or the second shaft head needs to be replaced due to serious wear , it only needs to be removed from the shaft instead of replacing the entire eccentric drive shaft, thus saving costs.

Description of drawings

Fig. 1 is a structural schematic diagram of the present invention.

Fig. 2 is a schematic structural diagram of the shaft body in the present invention.

Fig. 3 is a left side view of Fig. 2 .

FIG. 4 is a top view of FIG. 2 .

FIG. 5 is a schematic structural view of the second holder in the present invention.

Fig. 6 is a left side view of Fig. 5 .

detailed description

The specific embodiments of the present invention will be further described below in conjunction with the accompanying drawings.

1 to 6, including the first shaft head 1, the first clamp seat 2, the shaft body 3, the second clamp seat 4, the second shaft head 5, the journal 6, the slot 7, the through hole 8, the slot 9. Threaded hole 10, block 11, journal hole 12, keyway 13, etc.

As shown in Figure 1, the present invention is an eccentric transmission shaft, including a shaft body 3 and a first shaft head 1 and a second shaft head 5 located at both ends of the shaft body 3, the first shaft head 1 and the second shaft head 5 The axes are coaxial and parallel to the axis of the shaft body 3. The first shaft head 1 and the second shaft head 5 are separated from the shaft body 3. The first shaft head 1 and the second shaft head 5 are respectively passed through fasteners. fixed on the shaft body 3.

The first shaft head 1 and the second shaft head 5 are respectively welded and fixed on the first holder 2 and the second holder 4, the first shaft head 1 and the second shaft head 5 have the same structural size, the first holder 2 and the second holder Two clip seats 4 are made symmetrically. As shown in Figures 5 and 6, the first clamping seat 2 and the second clamping seat 4 are respectively provided with journal holes 12 parallel to the axes of the first shaft head 1 and the second shaft head 5, and the holes of the journal holes 12 are The wall is provided with an axial block 11 and an axial slot 9 , and coaxial through holes 8 and threaded holes 10 are respectively opened on both sides of the slot 9 .

As shown in FIGS. 2 to 4 , both ends of the shaft body 3 are respectively provided with journals 6 matching the journal holes 12 , and the journals 6 are provided with engaging grooves 7 matching the axial blocks 11 . The shaft body 3 is also provided with a keyway 13, which is connected with other transmission parts through keys.

When the present invention is made, the first shaft head 1 is welded together with the first holder 2, the second shaft head 5 is welded together with the second holder 4, and the whole member consists of the first shaft head 1, the second shaft head 5 and The shaft body 3 is assembled from three parts. When assembling, install the first shaft head 1 and the second shaft head 5 into the two ends of the shaft body 3 respectively, and position them with the locking block 11 and the slot 7, and then place the first clamping seat 2 and the second clamping seat Insert a bolt into the through hole 8 of the slot 9 of 4, and screw the bolt into the threaded hole 10, so that the first shaft head 1 and the second shaft head 5 are fixed on the shaft body 3.

When the first shaft head 1 or the second shaft head 5 needs to be replaced due to severe wear and tear, it is only necessary to loosen the bolts and remove them from the shaft without replacing the entire eccentric drive shaft, thereby saving costs.

The invention has the advantages of simple structure, convenient manufacture and installation.

Claims (4)

1. an eccentric drive shaft, comprise axis body (3) and be positioned at first spindle nose (1) at described axis body (3) two ends and the second spindle nose (5), the axis coaxle of described first spindle nose (1) and described second spindle nose (5) and be parallel to the axis of described axis body (3), it is characterized in that: described first spindle nose (1) and between described second spindle nose (5) and described axis body (3) for Split type structure, described first spindle nose (1) and described second spindle nose (5) are fixed on described axis body (3) respectively by fastening piece;

Described first spindle nose (1) and described second spindle nose (5) are separately fixed at the first holder (2) with on the second holder (4), described first holder (2) and described second holder (4) have the journal hole (12) with described first spindle nose (1) and described second spindle nose (5) axis being parallel, the hole wall of described journal hole (12) is provided with axial fixture block (11) and axially grooved (9), the both sides of described fluting (9) have coaxial through hole (8) and tapped hole (10); The two ends of described axis body (3) are respectively arranged with the axle journal (6) matched with described journal hole (12), described axle journal (6) are provided with the draw-in groove (7) matched with described axial fixture block (11).

2. according to eccentric drive shaft according to claim 1, it is characterized in that: described first spindle nose (1) and described second spindle nose (5) are welded on described first holder (2) respectively with on described second holder (4).

3. according to eccentric drive shaft according to claim 1, it is characterized in that: described first spindle nose (1) is identical with described second spindle nose (5) physical dimension, described first holder (2) makes with described second holder (4) symmetry.

4. according to the eccentric drive shaft according to any one of claims 1 to 3, it is characterized in that: described axis body (3) has keyway (13).