Plunger-type reduction gear

FIELD: machine building.

SUBSTANCE: plunger-type reduction gear comprises fixed rigid gear wheel (1), wheel representing wheel-separator (3) with its groove housing prismatic plungers (2) to move radially therein. Undeformable ring (5) is fitted in the grooves of plunger (2). Wave generator represents shaft (6) with the disk fitted off-center thereon.

EFFECT: longer life.

2 dwg


The invention relates to the field of General engineering and can be used as a load-reducing mechanism in the actuator control systems.

The efficiency of the drive control is determined by the operational characteristics of the hardware. Actuators equipped with wave transmission, in particular wave transmission with a flexible toothed wheels (HGF), containing as the level of reduction of the wave gear, have a high gear ratio. Therefore it is often necessary to apply the multiplier system transmissions to increase the angular movements of the output shaft of the actuator, which complicate the design of the drive. Also the gear of the wave gear have low durability due to the presence in the flexible toothed wheel stress concentrators in the form of depressions between the teeth. Therefore, an urgent task is to develop such structures gearboxes that do not require multipliers, have high load capacity, the necessary durability and have the ability to work in difficult climatic conditions.

Known stepper motor [A.S. No. 530961, USSR, F15B 11/12, Stepper motor, publ. 05.10.1976, Bulletin No. 37], which contains evenly spaced around the circumference of the block is controlled independently of the cylinders, then, is neither of which interact with the leading wheel gear.

The disadvantage of this drive are large axial dimensions and high gear ratio, the optimal value of which lies in the range from 80 to 300. The presence of a large number of cylinders reduces resource mechanisms of this type.

Closest to the proposed technical essence is reducing the node plunger gothicrainbow engine described in patent RU No. 2278979 "Plunger gatherplace engine", publ. bull. No. 18. The engine contains a movable rigid gear and interacts with the wheel, the wave generator with evenly spaced around the circumference of the cylinder and the radial channels connecting each cylinder with a Central hole in which is mounted for rotation dispenser in the form of a shaft with the cavities of the supply and discharge of the working fluid. The wheel is made in the form of a ring-separator, the grooves of which is placed with the possibility of radial movement prismatic plungers, and in symmetrical grooves plungers installed inextensible flexible element with the same cross section.

The disadvantage of this reducing of the site is its narrow scope, which is limited to areas in which there is the possibility of using the potential energy of compressed gas or high-pressure fluid. But in engineering streched the many tasks associated with the transformation of the kinetic energy of rotational motion.

Technical problem on which the invention is directed, is to increase resource mechanisms of this type.

The problem is solved in that the plunger gearbox, comprising a fixed rigid gear that interacts with the wheel, made in the form of a ring-separator, the grooves of which is placed with the possibility of radial movement prismatic plungers, and in the slots of the plungers installed unyielding ring, the wave generator is made in the form of a shaft with an eccentric mounted on the disk.

The invention is illustrated by drawings, where figure 1 shows a cross-section of the plunger gear; figure 2 is shown an axial section of the piston gear.

Plunger gearbox contains a fixed rigid toothed wheel 1. The plungers 2 evenly spaced around the circumference and are secured against angular movement relative to each other by a ring-separator 3, and the axial movements of the output shaft 4. In the slots of the plungers 2 installed unyielding ring 5. In the Central hole of the ring-separator 3 has an input shaft 6, are fixed against radial and axial movements of the bearings 7, posted in caps Polycarpus 8. On the shaft 6 is placed and fixed on seveh movement by a nut 9 disc Cam 10. The output shaft 4 is fixed to the ring-separator 3 and is fixed against radial and axial movements of the bearings 11 mounted in the semi-body 12.

Plunger gearbox works as follows. Rotation of the shaft 6 together with a fixed disk, a Cam 10 causes movement unyielding ring 5, and the plungers 2 forces to make a reciprocating movement in the grooves of the separator 3. The plungers 2 under the action of the drive Cam 10 come into contact with the fixed gear wheel 1, creating a zone of engagement, and the separator 3 with attached thereto the output shaft 4 begins to perform a rotational movement. The plungers 2, caught up in the free zone of engagement, removed from contact with the tooth wheel with unyielding rings 5.

Optimal gear ratio plunger gear lies in the range from 20 to 120.

Currently, the development of the plunger gear is in the stage of experimental tests.

Plunger gearbox, comprising a generator of waves, stationary rigid gear that interacts with the wheel, made in the form of a ring-separator, the grooves of which is placed with the possibility of radial movement prismatic plungers, wherein the wave generator is made in the form of a shaft with an eccentric mounted on the disk and in the slots of the plungers us is novlene unyielding ring.


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FIELD: electric engineering.

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1 dwg

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FIELD: mechanical engineering.

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