SU1303768A1 - Ball slip clutch - Google Patents

Abstract

The invention relates to the field of mechanical engineering, in particular, to safety devices designed to limit the magnitude of the torque transmitted by the reversing drive. The aim of the invention is to expand the operational capabilities of the coupling. The clutch contains a leading half coupling (P) and a driven P, made in the form of a clip (O) 5 with balls 10, spring-loaded in the direction of the leading P. Leading P is made as mounted on the leading}} (L 16 00 o with GFi 00 {fiue .l

Description

130

the shaft can be axially moved by the central gear 13, which is in constant kinematic engagement with the satellites (C) 14, and the C 14 axes are rigidly connected to a pressure disk 12 having on its end from the O 5 side evenly spaced around the circumference of the slot for the balls 10. The pressure disk 12 is mounted with the possibility of rotation with respect to O 5, the peripheral part of which is enclosed by an axially movable sleeve 17 with teeth on the inner

one

The invention relates to mechanical engineering, in particular, to safety devices designed to limit the magnitude of a torque transmitted by a reversible drive.

The aim of the invention is to expand the operational capabilities of the coupling by using it both as an automatic and as self-disconnecting.

Figure 1 shows the coupling, a partial longitudinal section; figure 2 - vi And in figure 1.

On the drive shaft 1, the sleeve 2 is freely mounted;

: the outer part of the splines. The splines of the sleeve 2 mate with their internal spline holes of gear 3, abutting against the collar of the sleeve, in gear 3 evenly around the circumference are blind holes 4. In addition, splines (instead of splines can be used a spline connection) with its slider hole, the yoke 5 is driven as a part of the coupling. In the gap between the gear 3 and the holder 5, a compression spring 6 is installed. The compression holes 5 have through holes 7. In the openings 4 and 7 there are individual compression springs 8, designed to interact through the intermediate elements 9 with balls 10, which protrude from the clip located in the slots 11 of the pressure disc 12 as part of the leading coupling half.

the side intended to interact with the teeth C 14. In one portion of the sleeve, the teeth are made continuously in the circumferential direction, and in the second portion in the form of alternating discontinuous gear sectors. The number of sectors is equal to the number C 14. The design described provides for switching the clutch from automatic operation to self-disconnecting by axial movement of the sleeve 17, which expands the operational capabilities of the clutch. 3 hp f-ly. 2 Il.

O

J2

- about 25

thirty

35

The pressure plate is rotatably mounted relative to the yoke. The leading coupling half is made in the form of a central shchetna 13 connected to the shaft 1, which is in constant kinematic engagement with the satellites 14, the axles 15 of which are finger-like rigidly connected to the pressure disk 12. An adjusting nut 16 is provided for adjusting the torque limit of the coupling.

The peripheral part of the clip 5, for example, in the form of pshits, is covered by an axially movable sleeve 17 with internal teeth, designed to interact with the teeth of satellites 14. In section a, the teeth are made continuously in the circumferential direction, and in the second section 8 - in the form of alternating discontinuous tooth sectors, the angle of the tooth sector is indicated by 61- (FIG. 2).

The number of sectors is equal to the number of satellites 14. In addition, the teeth of the sectors are a continuation of the teeth that are continuously arranged in the circumferential direction in the section a of the sleeve.

The means of axial fixation of the sleeve 17 on the holder 5 are conventionally not shown, and they can be made in the form of well-known screws, a spring-loaded ball, curved flat springs, etc.

The clutch works as follows.

In normal operation, all the elements of the coupling are in relative rest and the torque is transmitted from shaft 1 to the central gear 13, then to the satellites 14 and the pressure disk 12. From the disk 12 through the holes 11, the moment is transmitted to the spring-loaded balls 10 and, therefore, on the driven holder 5 and the sleeve 2. From the last moment it is transmitted to the gear 3 and then to the executive body.

When overloaded, i.e. stopping the neck- / Q turn 3 with sleeve 2, sleeve 5 and sleeve 17, shaft 1 with the central gear 13 continues to rotate in the same direction. In this case, the satellites 14, under the action of the rotating f5 gear 13, roll along the teeth of the fixed cage 17, pulling the pressure disk 12 with their fingers 15. Under the action of the increased resistance moment, the balls 10 roll out 20 from the holes 11, additionally compressing the spring 8. In the overload mode two are possible. case of operation of the coupling.

If, for example, with teeth of satellite satellites 25 litas 14, a portion of the river r is in engagement. the teeth of the sleeve 17 (the latter is in the right extreme position), in this case the coupling works as automatically recoverable, and not self-disconnecting. At the same time, for each revolution of the pressure disc 12, the balls go out 10 and fall into its wells as many times how many holes there are at its end.j

In the second case, if the sleeve section 5 is in engagement with the satellites (the sleeve 17 is in the leftmost position), then the satellites 40 14 roll over the sleeve teeth after the teeth leave the gear sectors (the central angles of which are indicated by 2) the clutch disengages itself, and further the transfer of torque to the holder 5 and gear 3 stops. In this case, the clutch is self-closing.

Thus, this coupling works both as an automatic, 50 and as self-disconnecting. At permissible speeds of rotation (up to 400 rpm) it can work

for all of them, it is enough to turn the sleeve 17 with the holder 5 relative to the shaft -1 (or vice versa) and all the balls synchronously fall into the holes 11 of the pressure disk 12.

Claims (4)

1. A ball clutch containing connected and driving half couplings connected by means of spring-loaded elements in the form of balls, the last of which is designed as fixed in the circumferential direction relative to the drive shaft of the central gear that is permanently engaged with the satellites installed x mounted on the driven shaft with the possibility of axial movement of the pressure plate with the clutch elements for the balls and the threaded size adjustment mechanism is transmitted torque, due to the fact that, in order to expand the operational capabilities of the coupling by providing the possibility of its use both as an automatic and self-disconnecting one, it is provided with an axially movable sleeve rigidly connected in the circumferential direction with a driven coupling half and covering satellites, there are located on the inner surface of the sleeve two axially shifted rims, one of which is made intermittently in the circumferential direction, the pressure disk is located between the coupling halves and mounted rotatably with respect to the latter, the axes of the satellites are rigidly connected to one of the pressure disk ends, the balls are located in driven coupling half, and the elements of the clutch of the disk with balls are made in the form of deaf profiled nests located evenly around the circumference at the opposite end of the pressure disk. 2. Mufta pop.1, distinguished by the fact that the knowledge of the coupling half is made in the form of axially spring-loaded one relative to another as automatic, but with „. .  , gears and clips connected by medium (low and high; - like-self-55  J-. (, t, the house of the spline joint with the external connection the surface of the sleeve, freely mounted on the drive shaft and made with a thrust collar on the torl for returning the clutch (when operating in self-disconnecting mode) in 13037684 the normal state is enough to turn the sleeve 17 with the holder 5 relative to the shaft -1 (or vice versa) and all the balls synchronously fall into the wells 11 of the pressure disc 12. Invention Formula 1. A ball clutch containing connected and driving half couplings connected by means of spring-loaded elements in the form of balls, the last of which is designed as fixed in the circumferential direction relative to the drive shaft of the central gear that is permanently engaged with the satellites installed x mounted on the driven shaft with the possibility of axial movement of the pressure plate with the clutch elements for the balls and the threaded size adjustment mechanism is transmitted torque, due to the fact that, in order to expand the operational capabilities of the coupling by providing the possibility of its use both as an automatic and as a self-disconnecting one, it is provided with an axially movable sleeve rigidly connected in the circumferential direction with a driven coupling half and covering satellites, there are located on the inner surface of the sleeve two axially shifted rims, one of which is made intermittently in the circumferential direction, the pressure disk is located between the coupling halves and mounted rotatably with respect to the latter, the axes of the satellites are rigidly connected to one of the pressure disk ends, the balls are located in driven coupling half, and the elements of the clutch of the disk with balls are made in the form of deaf profiled nests located evenly around the circumference at the opposite end of the pressure disk. 2. Mufta pop.1, distinguished by the fact that the knowledge of the coupling half is made in the form of axially spring-loaded one relative to another A sleeve surface mounted loosely on the drive shaft and made with a stop shoulder at the end, the sleeve is connected to the casing of the driven half coupling, the balls are installed in through holes made in the sleeve, and are spring-loaded by means of cylindrical elastic elements, one of whose supporting surfaces is in contact with the bottom blind holes made in gear. 3. Coupling according to claim 2, about t l and h and rant but with the fact that the sleeve is installed the flap is concentric to the cage, and on their interconversion surfaces, the connecting means are made in the circumferential direction in the form of slots. 4. The coupling according to claim 1, or 2, or 3, is distinguished by the fact that the teeth of the intermittent gear of the sleeve are a continuation of the teeth of the continuous crown. Editor L. Povhan Compiled by V. Ivanov Tehred L.Oleynik Proofreader A. .Zimokosov Order 1290/36 Circulation 812 Subscription VNIIPI USSR State Committee for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nao., d. 4/5 Production and printing company, Uzhgorod, st. Project, 4 Fi.2