SU889976A1 - Reversive apparatus with automated switch over - Google Patents

Description

(54) REVERSIBLE DEVICE WITH AUTOMATED

SWITCHING

The invention relates to mechanical engineering, to gear reversible gears.

A reversing device with an automated switching is known, comprising a housing, a drive shaft disposed therein with a bevel gear fixed on it, a driven shaft mounted perpendicular to the drive, a clutch including a two-sided coupler disposed on the driven shaft with the possibility of reciprocally moving along it , n mounted on the driven shaft two driven bevel gears, switch the mechanism of a cam, made in the form of a cam, kinematically associated with the tortoise one of the wheels, and a slider mounted with a protrusion l mounted in the xpfuse with the possibility of translational movement along the axis of the driven shaft.

The disadvantage is the unreliable operation of the device due to its complicated design.

The purpose of the invention is to increase the reliability of the device.

To achieve the goal, a circular groove is made on the double-sided popumufge, and the slide is provided with an additional protrusion interacting with the latter. In addition, the kinematic coupling of a cam to a wheel is a transmission with a gear ratio not equal to one.

FIG. 1 shows the proposed reversing device, a general view; in fig. 2 shows an embodiment of a device with an intermediate gear between a driving wheel and a cam.

The reversing device comprises a prefabricated housing 1, a driving 2 and a driven 3 shafts, bevel gears 4, 5 and 6. The wheel 4 is rigidly fixed on the driving shaft 2, and the wheels 5 and 6 are freely mounted on the driven shaft 3 and are alternately connected to it by means of a double-sided coupling half 7, freely moving along the key 8 and having

. fresh outer ring surface

groove

The slider 1O moving in the tide of the housing 1 has a main protrusion 11 and an additional 12. The protrusion 11 enters the profile groove of the cam 13, and the protrusion 12 enters the ring groove 9 of the half-coupling 7.

In the embodiment of the reversing device shown in FIG. 2, the cam 13 is mounted on the shaft of the additional gear 14 connecting the cam 13 to the drive shaft, and the transmission ratio ;; of this gear is not equal to one.

The device works as follows.

 When the drive shaft 2 rotates (Fig. 1, the cam 13, acting on the protrusion 11, moves the slider 1O to the right. The latter, with its additional protrusion 12 located in the annular groove 9, acts on the double-sided coupling half 7 and moves it to the right. 7 is disconnected from the wheel 5 and connected to the wheel 6, as a result of which the direction of rotation of the driven shaft 3 is reversed.

Upon further rotation of the driven shaft (as a result of changing the profile of the cam 13), the clutch switches and the direction of rotation of the driven shaft 3 changes to the original one.

FIG. 1 shows a reversing device, from which for one revolution of the drive shaft a double reversal of the driven shaft 3 occurs, and in FIG. 2, to obtain a double reversal of the driven shaft 3, several turns of the drive shaft 2 are necessary, the number of which is determined by the gear ratio of the additional gear

14. The proposed device has sufficient reliability, which is ensured by a rigid (without springs) connection of the slide with a cam.

Claims (2)

1. A reverse device with automated switching, comprising a housing, a drive shaft housed therein with a bevel gear fixed on it, a driven shaft mounted perpendicular to the drive, a clutch including a double-sided coupling located on the driven shaft with the possibility of reciprocating movement along it, and two driven bevel gears mounted on the driven shaft , made in the form of a cam, kinematically connected with the end face of one short-circuit of the wheels, and mounted in the housing with the possibility of translational movement along the axis of the driven shaft of the slide with overhang, different in that; that, in order to increase the reliability of operation, an annular groove is made on the double-half coupling, and the slider is provided with an additional protrusion interacting with the latter. 2. A device according to claim 1, characterized in that the kinematic coupling of the cam to the wheel is a gear with a gear ratio not equal to one. Sources of information taken into account in the examination 1. USSR author's certificate in application number 2652475 / 25-28, cl. F 16 N 3/14, 1978 (prototype).