RU144550U1 - ROTARY MOTOR TRANSMISSION DEVICE - Google Patents

Abstract

A device for transmitting rotational motion, containing the driving and driven shafts coaxially mounted in the bearings of the housing without the possibility of axial displacement, characterized in that it is provided with a sleeve with a screw thread mounted between the shafts with the possibility of axial displacement, made on the inner surface interacting by means of balls with a screw thread of the drive shaft, while on the outer surface of the sleeve longitudinal grooves are made, interacting by means of balls with a driven shaft th.

Description

The utility model relates to mechanical engineering, in particular to devices for transmitting rotational motion.

A device for transmitting rotational motion, comprising a slewing gear comprising a support platform, a slewing member, rolling elements located between them and a drive gear, in which the teeth of the drive gear are engaged with the rolling bodies (Slewing Gear. A. S. USSR No. 838207, IPC 3 F16H 37/00, Published June 15, 81. Bull. No. 22).

A disadvantage of the known device is the limited functionality due to the inability to add additional linear displacements.

The closest solution is a device for transmitting rotational motion in the form of a multi-stage gearbox, comprising a housing, an input shaft, an output shaft installed in bearings in the housing and mounted in the housing for rotation and subsequent fixation of the drum with intermediate shafts with gears arranged uniformly around the circumference each of which is installed with the possibility of alternating connection with the input and output shaft, in which the input shaft is mounted eccentrically to the axis of rotation of the drum with possible rotation relative to the latter (Multistage gearbox Patent SU No. 1762051, IPC 5 F16H 3/16 / V.A. Antonov, A.M. Itkis, V.A. Karpunin, V.A. Lapinsky et al., Published: 15.09 .1992).

A disadvantage of the known device is the limited functionality due to the inability to summarize rotational motion and linear movements.

The task the utility model is aimed at is expanding the functionality of the device.

The technical result that can be obtained using the utility model is the ability to summarize rotational motion and linear displacements.

To achieve the technical result, a device for transmitting rotational motion, comprising driving and driven shafts, coaxially mounted in the bearings of the housing without the possibility of axial displacement, according to the claimed utility model, it is equipped with a screw-threaded sleeve mounted between the shafts in the axial direction, made on the inner surface, interacting through the balls with a screw thread of the drive shaft, and longitudinal grooves on the outer surface, interacting yuschimi to the driven shaft via balls.

A utility model is illustrated in the drawing, where in FIG. 1 shows a longitudinal section of a device.

The device for transmitting rotational motion comprises a drive shaft 1 and a driven shaft 6 coaxially mounted in the bearings of the housing (not shown), one end of which is made in the form of a cup covering the shaft 1. Between the shafts there is a sleeve 2 that can be displaced in the longitudinal direction behind the account of the bearing assembly 3. The sleeve 2 is made with helical grooves on the inner surface and longitudinal grooves on the outer surface. Balls 8 are located between the screw grooves of the sleeve and the screw grooves 7 of the drive shaft 1. Balls 4 are also located between the longitudinal grooves of the sleeve 2 and the longitudinal grooves 5 of the driven shaft 6.

The operation of the device is as follows.

When the drive shaft 1 rotates and the sleeve 2 is stationary in the longitudinal direction, the driven shaft 6 rotates at the same angular speed as the drive shaft, while the rotation angles φ ₁ of the drive shaft and φ _{2 of the} rotation of the driven shaft will be equal to each other.

With the displacement of the bearing assembly 3 and the sleeve 2 by a value of δ, an additional rotation of the driven shaft 6 relative to the leading 1 will occur, while the angle of rotation of the driven shaft φ ₂ will be determined by the formula:

,

where φ ₁ is the angle of rotation of the drive shaft, rad;

φ ₂ - angle of rotation of the driven shaft mm;

h is the pitch of the screw cuts, mm;

δ is the longitudinal displacement of the sleeve, mm

Thus, the angle of rotation of the driven shaft 6 is determined by both the angle of rotation of the drive shaft 1 (angular displacements) and the longitudinal displacement of the sleeve 2 (linear displacements). Moreover, the proposed device implements, in addition to the transmission of rotational motion, and the function of summing angular and linear displacements. The need to summarize such heterogeneous types of movement arises, for example, in devices for reducing the dynamic load of a vehicle (Patent RU No. 2192971, Compensator of angular vibrations. IPC 7 B60K 17/32, B60G 9/00, B60G 7/00. Declaration 30.12. 1999, publ. 10.10.2001).

Claims (1)

A device for transmitting rotational motion, containing the driving and driven shafts coaxially mounted in the bearings of the housing without the possibility of axial displacement, characterized in that it is provided with a sleeve with a screw thread mounted between the shafts with the possibility of axial displacement, made on the inner surface interacting by means of balls with a screw thread of the drive shaft, while on the outer surface of the sleeve longitudinal grooves are made, interacting by means of balls with a driven shaft th.