SU33780A1 - Eccentric gear - Google Patents

Description

The invention relates to eccentric gears between two shafts located on the same geometrical axis, one of which is associated with an eccentric and the other with an eccentric yoke. In the proposed transmission, in order to obtain a variable in magnitude and direction of transmission, cranks with sliders sliding in the grooves of the eccentric and a disk coupled to the eccentric by means of washers are used.

In FIG. 1 shows a longitudinal section of the transmission; FIG. 2-transverse section, with the washers removed in the right side of the drawing; FIG. 3-10 are schematic arrangements of iliba and an eccentric at different torques; FIG. 11 - 18-various forms of transmission.

In bearings 7 and 2 of casing 3, bushings 4 and 5 are mounted on the connecting ends of shafts 6 and 7 by means of keys 8 h 9. Bushing 4 is equipped with a double crank W, on the fingers 7 / of which are mounted, rotatably, sliders 72, placed in the slots J3 of the eccentric J4, along which they can slide. The eccentric M is placed in the bearing 75, which is eccentrically located on the sleeve 5, equipped with a counterweight 43. The eccentric with the help of hinges jointed washers 75, rotating

around the fingers 77 of the disk J6, free sitting on both shafts. The disk J6 is either integral with the casing 3 (Fig. 1) or is made separately from it (Fig. 4, b, 10). Equally, the crank Yu can be either double or triple with angles of 120 ° between the fingers. In this case, three slots are made in the eccentric J4, and the number of both the hinges 44 and the fingers of the J7 is three.

If the disk washer J6 is held stationary, then when the shaft is rotated with the crank W in one direction, the shaft with the bearing 76 rotates at the same angular velocity in the other direction. FIG. 3, 4, 5, b shows the position of the parts of the eccentric gear every 45 ° rotation of the shaft 6 with the JO crank anti-clockwise of the shaft 7 with the bearing 75 clockwise.

If one of the shafts is kept stationary, then when the other shaft rotates, the disk washer 16 rotates in the same direction with an angular speed that is two times smaller. FIG. 3, 7 and 8 depict successively the position of the transmission parts every 45 ° shaft rotation and 22.5 ° rotation of the disk washer in FIG. 1, 5, b, with a fixed front shaft b with a crank JO, and in FIG. 8, 9, 10 - with a stationary shaft with a bearing 75.

FIG. 11-18 are exemplary diagrams illustrating the use of an eccentric transmission as a starting device (Fig. II and 12), B as a reversing device (Fig. 13, 14, 15). as a counter drive that changes the speed twice and includes a starting device (Fig. 16), as a transmission with an angular velocity ratio of 1: 1 and 1: 2, including the starting device (Fig. 17), and as an electrified reversing device (FIG. 18).

FIG. 11, the disk 16, also known as the transmission cover 3, is provided with a brake 19 actuated by an eccentric 20, a roller 27 and a control knob 22. When the drive pulley 23 rotates, the shaft 7 will rotate in the opposite direction with the same angular speed if the brake 19 is activated, and will remain stationary when the brake 24 acts on the brake pulley 25, which sits tightly on the shaft 7, when the brake 19 is released.

FIG. 12 shows the starting arrangement, characterized in that the casing 3 is made stationary and separately from the drive plate 16, and the brakes / P and 24 are inserted inside the casing 3.

FIG. 13 and 14 depict an exemplary arrangement of a universal coupling device used as a reversing attachment with a separately arranged washer-disk 16 and a casing 3. From the starting arrangement shown in FIG. 12, the present structure differs by a friction clutch device between the disk f6 and the sleeve 5, under the action of which the clutch receives a direct transmission in addition to the stored ones: reverse, under the action of the brake / 9 and free running, under the action of the brake 24. On the hinges 26, the brake pads are strengthened 27, pulled away by springs, not shown in the diagram, from the disc washer 76 and provided with rollers 28. The 2P ring can push the brake pads 27 against the disc / b during axial movement. Axial movement of the ring 29 can be obtained by threading on the rollers 27 and 30 and in the ears 57 of the ring 29.

FIG. 15 illustrates an exemplary use of the transmission as a reversing device, provided that the disk-washer 76 is connected to the casing 3 as one unit. This device is different from the trigger shown in FIG. 11, a frictional; clutch device 32 between the disk 76 (also known as the casing 5) and the shaft b. When the friction clutch 32 is engaged, the present reversing device gives a forward stroke, under the action of the brake / P - reverse course and under the action of the brake 24 - idling.

Shown in FIG. 16, the design of the counter drive, which doubles the number of revolutions, is distinguished by the JOT of the starting actuator, FIG. 11, the 7P brake has been transferred from the casing 3 to the former driving pulley 23, which is made braking in the counter-drive, and the casing 3 of the couplings is used as the driving pulley. Under the action of the brake J9, the ratio of the angular velocity of rotation of the casing 3 to the angular velocity of rotation of the shaft 7 can only be 1: 2, and under the action of the brake 24, the counter-drive is idling. Under the condition of transmission from shaft 7 to the casing 3, the brake 24, if there is any need for it at all, should be located with the casing 3.

FIG. 17 shows an exemplary diagram of a two-speed box, including a starting device, different from the reversing device of FIG. 15 in that the 7P brake has been transferred from the casing 3 to the former driving pulley 23, which is made braking in the gearbox, and the casing 3 of the couplings is used as the driving pulley. Under the action of the brake 25, the gearbox gives idling, under the action of the brake, the 7P-transmission from the casing 3 to the shaft 7 has a ratio of speed 1: 2, and under the action of friction clutch 32-gear 1: 1.

FIG. 18 illustrates an exemplary electrified transmission device used as a reversing device. On the springs 33 and 34, the rings 55 and 36 made of magnetic material are strengthened. When the current in the coil 57 of the ring electromagnet 38 closes,

broadcast; when the current in the coil 39 of the ring electromagnet 40 is closed, an idle run is obtained, and when the current in the coil 41 of the ring electromagnet 42 is closed, a direct stroke is obtained.

The subject matter of the invention.

Claims (5)

1. An eccentric gear between two shafts located on the same geometrical axis, one of which adjoins an eccentric and the other an eccentric yoke, characterized in that, in order to obtain a variable in magnitude and direction of transmission, the eccentric 14 (FIG. 1, 2) is coupled to the shaft 6 by means of cranks 10, rigidly mounted on the shaft, and sliders 12, sliding in the grooves 75 of the eccentric and pivotally fixed on the fingers // of the cranks, using the disk 16, freely rotate around its axis shafts and coupled with eccentric by means of washers 18 articulated by means of hinges 44 with an eccentric and rotating around the fingers 17 of the disc. 2. The form of transmission in accordance with claim 1, characterized by the use of brakes 19 (FIGS. P, 12 and 16) for braking the disk 16 or one of the shafts in order to activate the transmission. 3. The form of the transfer under item 1 and 2, characterized by the use of a friction device 27 (Fig. 13 and 14) or 32 (Fig. 15) for coupling the disk 16 with one or the other disk in order to reverse the transmission. 4. The form of the transfer under clause 1 and 2, characterized by the use of a clutch 32 (Fig. 17) in order to obtain a second gear stage. 5. The form of the transfer under item 3, characterized by the use of electromagnetism 55, 42 (Fig. 18) in order to reverse the transfer. I fig i