SU1590749A1 - Freewheeling clutch - Google Patents

Abstract

This invention relates to mechanical engineering, namely to overrunning clutches. The purpose of the invention is to simplify the design and reduce the size of the coupling. The clutch contains outer 1 and inner 2 clips (O), rollers (P) 3 placed between them. The latter are mounted on crackers fixed on O 2, and tucked from cheeks 4 at the ends, on which grooves are made parallel to the working surfaces of the crackers. A support bearing 6 is mounted on the 7 O 1 axle. An automatic pressure equalization device on P 3 is installed between 0 2 and the outer race of the bearing 6; since O 2, resting on the springs 8, is displaced in the direction of less loaded P 3. Performing a pressure balance device on P 3 in the form of a helical coil spring simplifies the design and reduces the size of the coupling. 2 Il.

Description

Pll8. one

The invention relates to mechanical engineering, and more specifically to overrunning clutches. /

The purpose of the invention is to simplify the design and reduce the size of the coupling.

Figure 1 shows the clutch section; figure 2 - the same, end view.

The freewheel consists of an outer race 1, an inner race 2, rollers 3, installed between the cheeks 4, crackers .5 rigidly fixed on the inner race 2, a bearing 6 mounted on the trunnion 7 of the outer race t and helical cylindrical bracelet springs 8, stacked rings between the clutch of the coupling and the outer ring of the bearing 6 in the annular grooves of the outer race. The flange of the inner collar 2 prevents axial displacement of the inner collar 2 and holds the rollers 3, and the grooves 10 on the cheeks ensure their elasticity during axial displacement of the rollers at the moment of jamming and their return. After removing the load. The torque from the inner race 2 is transmitted to the drive shaft (not shown) through the protrusions 11 at the end of the inner race 2.

The clutch works as follows.

During the accelerated rotation of the yoke 1, the rollers 3, which are carried along by force, rubbing against the outer yoke, are drawn into the wedge between the outer yoke and the wedging surface of the breadcrumbs 5, which engage the yoke. Since, first of all, the rollers that, under the action of their own weight, roll into the jamming zone between the breadcrumbs 5 and the outer race 1, then under the action of the forces acting on the crackers 5, the inner race 2, due to the gap between the bearing 6 and the race 2, are jammed. is shifted to the opposite side of the jamming face. clamping the opposite rollers 3 to the holder 1 and compresses the coil springs, 8 installed

rings in the annular grooves of the outer ring. The pressure on the rollers 3 is equalized and the rollers evenly come into operation. Depending on the position of the clutch, any of the rollers can become jammed and therefore alternation of jammed rollers is possible, at which the contact points of jamming shift. c, which reduces wear on the working surface of the crackers and increases the efficiency of the coupling. When the rotational rotation of the inner race 2 is high, the rollers 3 are wedged, the race 2 under the action of the helical coil springs 8 is mounted coaxially to the race 1, ensuring the free rotation of the race 1 2 on the bearing 6 relative to the race 1, Toe. the clutch is turned off. Thus, making an automatic pressure equalization device on the rollers in the form of a helical coil spring allows you to increase the design of the coupling and reduce its dimensions.

1 Formula and 30 brea

freewheel, containing outer and inner races, wedged rollers placed between them, interacting with crackers, cheeks, holding rollers from axial displacement, and a device for automatic pressure equalization on rollers In order to reduce the size and simplify the design, the outer sleeve is made with a trunnion and a bearing is mounted on it, and the device for pressure equalization is made in a spiral cylindrical braid springs located between the inner s coupling ring and the outer ring of the support yodshipnika, cheeks are fixed to the inner race and formed with grooves, parallel surfaces rabchim crackers.

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Claims (1)

street a inventions A freewheel, containing the outer and inner cages, jammed rollers placed between them, interacting with crackers, cheeks holding the rollers from axial displacement, and a device for automatically equalizing the pressure on the rollers, so that that, in order to reduce the dimensions and simplify the design, the outer casing is made with a pin and a support bearing is installed on it, and the pressure equalization device is made in the form of coil cylindrical bracelet springs' placed between the inner the clutch plate and the outer ring of the support bearing, the cheeks are fixed on the inner ring and are made with grooves parallel to the working surfaces of the crackers.