SU1442718A1 - Hydraulic cylinder - Google Patents

Abstract

The invention makes it possible to expand the functionality of a hydraulic cylinder by smoothly varying the output force and the speed of movement of the piston according to different laws for each position of the piston. The transformable piston 3 is installed in the sleeve 1 with a working surface 2 of variable cross section and with the formation of working cavities. The sleeve 1 is made elastic and provided with a device for changing the cross section 5. The device consists of rollers 6, which are mounted in racks 7 with the possibility of synchronous movement with the piston 3. The actuator 11 according to the signal from the sensor 12 of the rod 4 moves the device. 3 il.

Description

(L

4: 4 GO H

00

phi.2

The invention relates to mechanical engineering and can be used in power cylinders.

The purpose of the invention is to extend the functionality by. smoothly varying the output force and the speed of movement of the piston according to different laws for each position of the piston.

FIG. 1 shows the hydraulic cylinder general view; in fig. 2 is a hydraulic cylinder with an elastic sleeve, general view} in FIG. 3 is a section A-A in FIG. 2

The hydraulic cylinder (figure 1) consists of

sleeves 1 with a working surface 2 of variable cross-section, transformable by the piston 3, which can be either polled with gas or with inflatable sealing elements, in this version, a piston 3 with sealing elements in the form of ribs with great flexibility, and a rod 4.

The sleeve 1 is made elastic (FIG. 2) and has a device 5 for changing the cross section, consisting of rollers 6, which are mounted in racks 7 with the possibility of movement relative to the body — ring 8 (FIG. 3).

To automatically track the force, the device 5 for changing the cross section of the sleeve 1 of the rack 7 with the rollers 6 is moved by the actuator 9 according to the signal of the sensor 10 against the body - the ring 8, changing the cross section of the sleeve 1, and the executive mechanism 11 by the signal of the sensor 12 moves device

o

five

Q 5

0

five

0

5 for changing the cross section of the sleeve 1 in accordance with the piston 3.

The hydraulic cylinder works as follows.

When pressure is applied, for example, in the piston cavity, the piston 3 is displaced to the right (Fig. 2). Moreover, from the device 5 for changing the cross section of the sleeve 1 depending on

force on rod 4; sensor 10 forces a signal to the actuator 9, KOTopbrfi moves the struts 7 with rollers 6 relative to the housing — ring 8, establishes the cross section required for this force, and sensor 12 positions the rod 4 sends a signal to the actuator 11, which moves the device 5 to change the cross section of the sleeve 1 in accordance with the piston 3.

Claims (1)

Invention Formula A hydraulic cylinder containing a variable cross-section liner with covers, a transformable piston with a rod, installed in a p-pin to form working cavities, which is different and flexible, in order to expand its functionality by smoothly changing the output ram and the speed of the piston movement according to different laws for each position of the piston, the sleeve is made elastic and is equipped with a device for changing the cross section, made in the form of radially moving relative to the sleeve of the rollers mounted on the sleeve with The possibility of synchronous movement with the piston. (fJUS.i 9g.d