SU694698A1 - Protective ball clutch - Google Patents

Description

Zah and located between the bodies of rolling.

The disks can be set up in groups, each of which has two driving disks and a driven disk placed between them, and springs are associated with the driving disks of the neighboring groups.

The clutch can be equipped with a separator for rolling elements of all disk groups, made in the form of U-shaped clips, each of which is installed between the ends of the driving and driven discs of one of the groups, and a sleeve connecting it with the neighboring U-holder and placed concentrically in drive disks of neighboring groups.

FIG. 1 shows a coupling with a partial longitudinal section (the first option); in fig. 2 - then (the second option); in fig. 3 - section A-A in FIG. 2

The clutch contains a leading coupling half 1, in which the leading disks 3 are mounted on the slots 2. Driven disks 4 are placed between the disks 3, mounted on the slots 5 of the driven coupling half 6. There are deaf grooves 7 on both ends of the driven disks 4 (Fig. 2) through grooves 8 (Fig. 1). On the drive disks 3, at the ends facing the driven disk 4, recesses 9 are made for rolling bodies, for example balls 10, installed and in the slots 7 of the driven disk 4. The balls 10 are tucked into the recesses 9 by springs 11 placed or through the grooves 8 ( Fig. 1), or between the leading disks 3 (Fig. 2). The clutch is closed by a side cover 12 connected to the leading coupling half 1. The springs 11 are pressed by adjusting screws 13 installed either in the leading coupling half 1 (Fig. 1) or in the cover 12 (Fig. 2).

Leading 3 and slave 4 disks can be installed either in alternate order (Fig. 1), or in groups: two on the master and a slave placed between them (Fig. 2).

On the fit. 2, an option is provided for installing balls 10 of all disk groups 3 and 4 in the separator 14, made in the form of U-shaped clips 15, each of which is placed between the ends of the leading 3 and the slave 4 disks. The sleeves 15 are connected by a sleeve 16 which is mounted concentrically in the 3 leading disks of adjacent groups.

The operation of the coupling in the first embodiment (Fig. 1), with an increase in the transmitted torque, is higher than acceptable, as follows.

The balls 10, compressing the spring II, are embedded in the through grooves of the 8 disks 4. The leading coupling half I and the driven disks 4 rotate. The coupling works and does not transmit a torque.

When the torque is reduced to the required value under the action of the force of the springs 11, the shariki 10 enter the recesses 9 of the drive disks 3. The clutch transmits the torque.

Depending on the number of installed drive plates 4 with the corresponding number of balls 10 and springs 11, the clutch can be easily tuned to transfer and limit various torque values and adjusted using screws 13.

The operation of the coupling according to the second variant (Fig. 2) with an increase in the transmitted torque beyond the allowable one occurs as follows. The balls 10 roll out of the grooves 7 of the driven disks 4, exerting pressure on the driving disks 3, compressing the corresponding springs 11. There occurs a relative rotation of the driving disks 3 with the coupling half 1 and the driven disks 4 with the coupling half 6. The coupling works and does not transmit torque.

When the torque is reduced to the required value under the action of the force of the springs 11, the balls 10 sink into the recesses 9 of the drive disks 3. The clutch recovered the transmission of a certain torque.

The presence of the separator 14 ensures the stability of the coupling operation due to the simultaneous rolling of all the balls 10 from the recesses 9 to the cavities 9 with rolling friction, which significantly reduces their wear with frequent overloads of the coupling and increases the smoothness of operation.

In these couplings, a significant increase in the measured torque in a large range is achieved only by increasing the axial, rather than the radial, dimension. Increase the number of balls in the clutch

with an increase in the transmitted torque does not increase their contact pressure on the edges of the wells during overloads, which ensures high reliability and durability of the coupling and smoothness

triggered.

Claims (4)

1. Safety ball coupling, containing a leading coupling half and a driven coupling half mounted concentrically therein, having disks mounted on their slots, spring-loaded and connected by connecting elements placed on the facing ends of the disks, characterized in that, in order to increase durability and ensure smooth operation, connecting elements made in the form of bodies rolling, for example balls, with grooves on both ends of the driven disk, and recesses on the ends of the driving disks facing it, and rolling bodies installed in the said grooves and recesses. 2. Coupling according to claim 1, characterized in that the grooves in the driven disk are made through and parallel to the axis of rotation of the coupling halves, and the springs are placed in the grooves and located between the rolling bodies. 3. The clutch according to claim 1, characterized in that the disks are mounted in groups, each of which has two driving disks and a driven disk placed between them, and the springs are connected with the driving disks of adjacent groups. 4. The coupling according to claim 3, characterized in that it is provided with a separator for the bodies of all disk groups, made in the form of U-shaped clips, each of which is installed between the ends of the driving and driven disks of one of the groups, and bushings it is adjacent to a U-shaped cage and placed concentric in the drive disks of neighboring groups. Sources of information taken into account in the examination 1. USSR author's certificate number 330279, cl. F 16D 7/06, 1970. 2. USSR author's certificate number 217158, cl. F 16D 7/02, 1966 (prototype). FIG. 2