SU19868A1 - Modification described in US Pat. No. 5994 friction clutch - Google Patents

Description

The main patent No. 5994, issued to the same applicant, describes a friction clutch designed to transmit rotation from one shaft to another, or stop it during operation, and also enable the idler pulley or stop it during rotation of the shaft. In this case, the screws used are equipped with left and right thread for slide nuts, which are pivotally connected with brake shoe levers. In such couplings, it is proposed to use only one screw with one-side thread for moving all the brake shoes.

In FIG. 1 shows the front view of the proposed coupling with partial cuts; FIG. 2 is a side view of it; FIG. 3 is a view from above with a partial section; FIG. 4 is a sectional view of a coupling part along an eccentric axis for moving two opposite brake shoes; and FIG. 5 is the same two other pads.

The housing 1 of the proposed friction clutch is wedged with a key 3 on the shaft 2 (FIGS. 1-3) and provided with guides for four sliders 4, 5 carrying the brake pads 6. The sliders 4 (FIGS. 1 and 2) are mounted with their right-angle slit on pressure roller 11

(Fig. 4) of square section, provided with pins on the ends, the latter being relatively eccentric with respect to the edges and, moreover, so that the distance from the center of the trunnion to the face is greater or less than the distance from the center to the first face adjacent by a certain amount. The ends of the levers 10, fitted with a cylindrical bushing, rotatable in the walls of the guide sliders 4 (Figs. 2 and 4), with the centers of the holes of the ends of the lower levers 10 and. The upper slide is so positioned that when the levers rotate in the same direction, the slide blocks move in the opposite direction to each other. The free ends of the levers 10 of the upper slide 4 are mounted on the pins of the nuts of the slide 16 (Fig. 2) connected by a frame 17 with a roller 42, on the pins of which the free ends of the levers 10 of the lower slide 4 are fitted (frame 2) with two fingers 20 (Fig. 2 and 3) covered by fork ends of the levers 19. The latter are connected with screws 21-a (Fig. 5) to the pins of the pressure rollers 21 of two sliders 5, 5. The pin 22-a of the roller 21 is placed in the wall of the guide body 1 and the pin 22fl - in the lid 9 of the ram, with it

The middle cylindrical part of the roller 21 is located eccentrically with respect to all the trunnions and is enclosed in the cylindrical opening of the sleeve 23 of square section. The holes in the sleeve 23 with respect to the faces are located eccentrically and, moreover, as the trunnion relative to the faces of the roller 11 (Fig. 4). The sleeve 23 is placed in the orifices of the rectangular cross section of the sliders 5 and is intended to move the latter when the levers 19 are turned (Fig. 2). The cover 7 (figs. 1 and 2) of the upper slider 4 is designed as a plug with a hole at the ends in which the screw 12 is screwed through the slider nut 16 and secured against axial movement by the shoulder 8 and the nut 13, by means of the bolt 14. On one A friction roller 15 is placed at the ends of the screw; it is placed; {{for the walls of the grooved coupling 24. Last mounted on sleeve 26-28, the upper half of which can be moved and the lower half is fixed with the lower half of the bearing sleeve 27 (Fig . 1), with that the coupling 24 is connected with half of the screw 26 2 5. For axial stirring of the coupling, it is connected with screws 31 (Fig. 3) with mounts 29, 30, mounted on fingers 32, eccentrically fastened on a roller 33 placed in the fixed ears 34 of the bearing 27. On the roller 33, a rocker arm fixedly fixed 39 and at the ends of 36, ending with handles 37.38, painted with various conventional paints. The load 39 is designed to hold the clutch 24a in its middle position relative to the roller 15. To turn on or off the clutch 18, which is wedged with a key 41 on the shaft 40 (Fig. 1), is pulled by the corresponding handle 37 or 38. With this, the corresponding gigi 36 and 29.30, the clutch 24 moves to one side or the other and frictional engages with the roller 15, thereby causing the latter to rotate, which by means of the screw 12 and the roller 17 rotates the levers 10,10 and 19,19, moving the sliders in the appropriate direction 4,5 with brake pads 6 (Fig. 2).

The subject of the patent.

1. Variation of the friction clutch described in Patent No. 5994, characterized in that only one screw 12 with one-way thread is used to move all brake pads, the nut slider 16 of which is connected to the pivoting levers 19 by means of a frame 17.

2. The form of the implementation of the clutch described in paragraph 1, characterized in that the pressure rollers 11 with a square cross section in the middle part are provided with eccentric trunnions.

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