SU1421919A1 - Mechanism for converting reciprocating motion into oscillatory motion - Google Patents

Abstract

The invention relates to mechanical engineering and can be used in various devices for converting the reciprocating motion of a drive into the oscillatory motion of an actuator. The purpose of the invention is to expand the kinematic capabilities of the mechanism by providing the frequency of the oscillatory movement of the slave link, twice the frequency of the reciprocating movement of the drive shaft. Target 10 8 ......: ...-... i - .. j of the invention is achieved as follows When moving the slide 4 from the initial position, the dog 5, resting against the end of the reyri 7 and overcoming the resistance of the spring 11, moves the rail 7 from left to right following the movement of the slide 4. The 17o gear rotates. At the end of the movement of the rail 7, the pawl 5 runs onto the support 14 and, turning, releases the rail 7. Under the action of the spring 11, the rail 7 moves along the slide 4 and returns the gear 1 7 to the starting position. The impact energy is absorbed by the shock absorber 8. By the time the rail 7 contacts the shock absorber 8, the dog 6 is released and under the action of the spring 16 slips over the end of the rail 7. When the direction of movement of the slide 4 is reversed, the described movement cycle of the mechanism repeats, only now the rail 7 moves the dog. Thus, during the reciprocating movement of the actuator 2, the rail 7 and the gear wheel 17 oscillate at a frequency twice the frequency of the reciprocating movement of the actuator. 3 silt (L с: 4 to с 8 2 i - .. j 7 "ff / ./х / UUU UH XXU X XHU / UU

Description

The invention relates to mechanical engineering and can be used in various devices for converting the reciprocating motion of a drive into oscillatory movement of an executive link.

The purpose of the invention is to expand the kinematic capabilities of the mechanism by providing the frequency of oscillatory movement of the slave link, twice the frequency of the reciprocating movement of the drive.

Fig. 1 is a schematic diagram of a mechanism for converting a reciprocating motion into an oscillatory one; FIG. 2 is one of the constructive embodiments of the mechanism; on fig.Z - section aa on fig, 2.

The mechanism for converting reciprocating to oscillatory motion comprises a housing 1 and a reciprocating movement actuator arranged in the housing, made, for example, in the form of a pneumatic cylinder 2 with a rod. 3. A slider is rigidly connected to the rod 3 of the pneumatic cylinder 2, 4 on which are pivotally mounted dogs 5 and 6, made in the form of double-arm levers. In housing 1 there is a driven link, executed in the form of a toothed rack 7, shock absorbers 8 and 9, spring-loaded 10 and. 11 and two pairs of lugs 12 to 15. The lugs 12 and 13 interact with the shock absorbers 8 and 9, and the lugs 14 and 15 with the dogs 5 and 6 o The dogs 5 and 6 can rotate relative to the slide 4 when they slide onto the stops 14 and 15 , as well as under the action of their spring 16. The gear rack is engaged with the executive link, which is designed as a gear wheel 17.

The mechanism for converting the reciprocating motion into an oscillatory one works as follows:

Moving the slider 4 to one of the extreme positions of the mechanism for converting the reciprocating movement into an oscillatory one is brought to its original position, in which one of the dogs, for example 5, drops over the end of the rack 7. The rail 7 itself takes up a position between shock absorbers 8 and 9, which are pressed to the stops 12 and 13 of the housing 1. When changing the direction of movement of the floor

Zun 4 dog 5 rests on the end of the rail 7 and, overcoming the resistance of the spring 11, moves the rail 7 from left to right following the movement of the slide 4. Rotate the gear wheel 17 against the direction of the clockwise rotation. At the end of this movement, the pawl 5 runs over the support 14 and, turning, releases the rail 7. Under the action of the spring 11 the rail

7 moves along the sub-stage 4 and returns the actuating member — the gear 17 to the initial position. Energy shock absorbed by shock absorber

8 with a spring 10. By the time of contact of the rail 7 by the shock absorber 8, co; the tank 6 is released and under the action of the spring 16 it rolls over the end of the rail 7.

With the next reversal of the direction of movement of the slide 4, the dog 6 overcomes the resistance of the spring 10 and moves the rail 7 from right to left. The gear wheel 17 rotates in the direction of the hour hand movement. After running a doggie. 6 to the stop 15, the next return of the slats 7 to the initial position occurs. At the same time, the impact energy is damped by a shock absorber 9 with a spring 11.

Thus, in one cycle of movement of the slide .4 mechanism, two cycles of movement of the rail 7, and hence of the gear wheel 17, i.e. their movement is carried out at a frequency twice as large as the frequency of the reciprocating movement of the drive. .

Claims (1)

Invention Formula The mechanism for converting reciprocating motion into oscillation. body comprising a slider arranged in the casing, a pawl, a driven link, a spring, a shock absorber associated with it, and a reciprocating movement, characterized in that, in order to expand the kinematic possibilities by providing the oscillatory displacement frequency of the driven link, twice the frequency of the reciprocating movement of the drive, the mechanism is provided with a second dog, a second spring and a second shock absorber and two pairs associated with it stops mounted in the housing and designed to interact respectively with shock absorbers cams, dogs made in the form of spring-loaded to each other double-arm levers pivotally mounted on the slide for interaction with the driven link, and the shock absorbers are still anchored in the housing with the ability to interact with a driven link. iO 6 2 - 13 1 9 // / U / / Fig.Z