RU183330U1 - CORNER MOTOR REDUCER - Google Patents

Abstract

The utility model relates to mechanisms of angular movement with high torque and can be used in mechanical engineering, electrical engineering, machine tool and instrument engineering as mechanisms for rotary tables and mechanisms for opening and closing heavy doors, gate valves. The angular displacement motor-reducer comprises an engine, a longitudinal displacement reducer and a rod, which is made in the form of a fork. On the one hand, the fork is kinematically connected to the longitudinal displacement reducer, and on the other hand, it is rigidly fixed to the output shaft of the geared motor. The technical result is the expansion of the functionality of gear motors to ensure smooth angular movement, as well as simplifying the design of means for angular movement. 4 ill.

Description

The utility model relates to mechanisms of angular movement with high torque and can be used in mechanical engineering, electrical engineering, machine tool and instrument engineering as mechanisms for rotary tables and mechanisms for opening and closing heavy doors, gate valves.

Known motor gearbox for longitudinal movement (US 4850466, priority date 05/19/1988), comprising a motor and gearbox with a screw-nut gear located in the housing, which is connected to a rod mounted with the possibility of longitudinal movement. The stem is a long and non-rigid structure made in the form of two cheeks.

The disadvantage of this technical solution is the limited functionality of the device, since the known gear motor provides only longitudinal movement of the rod.

Known planetary gearbox (RU 98509, priority date 12/14/2009), containing at least one planetary gear type 3K, consisting of three-gear satellites placed on the support rings and kinematically connected with the movable ring and fixed rings, as well as with the sun wheel . On the outer side of the extreme rims of the satellites of the low-speed stage, made according to the 3K scheme, there are two additional supports in the form of necks made in one piece with the satellite. In addition, the design includes a 2K high-speed stage.

The disadvantage of this device is the complex design of the gearbox, since the known planetary gearbox has a large number of complex parts, in addition, increased demands are placed on the accuracy of their manufacture and installation.

The closest analogue to the claimed utility model is a longitudinal displacement gear motor (RU 86996, priority date 06/26/2009), comprising a motor and gearbox with a screw-nut gear located in the housing, which is connected to a rod mounted with the possibility of longitudinal displacement. The rod is made in the form of a hollow cylinder, mounted with the possibility of longitudinal movement inside the said body, with which its outer surface has a hermetically-sliding connection.

The disadvantage of this technical solution is the limited functionality of the device, since the known gear motor provides only longitudinal movement of the rod. At the same time, in many design problems, it becomes necessary to ensure angular displacement at low output angular velocities, low motor powers, and smooth transmission of torque.

The technical challenge is to expand the arsenal of tools for angular displacement.

Technical results are the expansion of the functionality of gear motors to ensure smooth angular movement, as well as simplifying the design of means for angular movement.

The technical result is ensured by the fact that the angular displacement gear motor comprises a motor, a longitudinal displacement reducer and a rod, which is made in the form of a fork. On the one hand, the fork is kinematically connected to the longitudinal displacement reducer, and on the other hand, it is rigidly fixed to the output shaft of the geared motor.

The longitudinal movement reducer is a reducer with a transmission located in the housing, which converts the rotational movement of one link into the reciprocating motion of the other link. The longitudinal displacement reducer may contain screw-nut, ball-screw, worm, or other types of gears, depending on the required length and speed of angular displacement, the output force, and also on the required dimensions and layout of the structure.

The kinematic connection is a movable connection, which provides the possibility of mutual movement of the elements. As a kinematic connection, belt, cable, worm, screw, ball-screw and other connections can be used.

Rigid fastening is a fixed connection in which the relative position of the elements remains unchanged. Pins, screws, bolts, etc. are used as a rigid fastening.

The utility model is illustrated by the drawings:

fig. 1 - Motor gearbox angular displacement (kinematic diagram);

fig. 2 - Motor gearbox angular displacement (main view);

fig. 3 - Motor gearbox angular displacement (top view).

fig. 4 - Motor-reducer angular displacement (graphic diagram).

The figures show:

1 - engine;

2 - case;

3 - the first axis;

4 - electric motor;

5 - gear longitudinal movement;

6 - fork;

7 - coupling;

8 - screw;

9 - a nut;

10 - the second axis;

11 - bearings;

12 - output shaft of the gear motor.

The angular displacement gear motor (Fig. 1, Fig. 2, Fig. 3) contains an engine 1, consisting of a casing 2, on which an electric motor 4 is installed through bearings (not shown in the figures) and the first axis 3. the angular displacement reducer includes a longitudinal displacement reducer 5 and a rod made in the form of a fork 6.

The shaft (not shown in the figures) of the motor 1 through the clutch 7 is connected to the screw-nut transmission screw 8 located in the housing of the longitudinal movement reducer 5. Engine 1 creates a torque at the input of the longitudinal movement reducer 5.

The kinematic connection of the fork 6 and the longitudinal displacement gear 5 is ensured by making the nut 9 with the fork 6 in the form of a kinematic pair, which has a relative angular displacement. The plug 6 s through the second axis 10 and the bearing 11 is connected to the nut 9.

At the same time, on the other hand, the plug 6 is rigidly fixed to the output shaft 12 of the angular displacement gear motor using pins (not shown in the figure). The first axis 3 of the engine 1 and the second axis 10 of the nut 9, as well as the output shaft 12 are parallel to each other.

The functioning of the proposed technical solution is as follows (Fig. 1):

The rotation from the engine 1 is transmitted through the coupling 7 to the screw 8 of the longitudinally moving gear 5, the nut 9 of which moves linearly along the screw 8. As a result, the distance between the first axis 3 of the engine 1 and the second axis 10 of the nut 9 changes, which drives the output shaft 12 .

The engine 1 provides the rotation of the screw 8 in one or the other direction, which allows you to create an oscillatory angular movement of the output shaft 12.

The length of the angular movement of the output shaft 12 depends on the length of the screw 8 of the longitudinal movement reducer 5. When using a worm gear in the housing, the longitudinal movement reducer is not limited.

The gear ratio of the longitudinal movement reducer 5 depends on the length of the yoke 6, in particular on the distance between the second axis 10 and the shaft 12. Moreover, the distance between the first axis 3 and the second axis 10 can also affect the gear ratio.

Calculation of the parameters of the angular displacement gear motor to confirm industrial applicability (Fig. 4) contains ϕ - the angle of rotation of the output shaft of the gear motor; λ is the angle of rotation of the motor shaft (input shaft of the gearbox); k is the transmission step of the screw-nut; geometrical parameters of the geared motor: ρ0 is the distance from the first axis 3 of the electric motor 1 to the second axis 10 of the screw-nut transmission nut 9, ρ2 is the distance from the second axis 10 to the output shaft 12, and l is the distance between the first axis 3 and the output shaft 12.

More precisely, the gear ratio i is determined by the expression

Where

Thus, the angular displacement motor-reducer, comprising an engine, a longitudinal displacement reducer, and a fork-shaped rod kinematically connected to a longitudinal displacement reducer on one side and rigidly fixed to the output shaft on the other, provides smooth angular displacement of this shaft, while simplifying the design means for angular movement due to the absence of complex gears and parts in the gearbox.

Claims (1)

An angular displacement motor-reducer comprising an engine, a longitudinal displacement reducer and a rod, characterized in that the rod is made in the form of a fork, kinematically connected on one side to a longitudinal displacement reducer and, on the other hand, rigidly fixed to the output shaft.

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