SK279999B6 - Linear hydromotor for transmitting the hydrostatic energy to other hydraulic element - Google Patents

Abstract

A linear hydromotor for transmitting the hydrostatic energy to other hydraulic element, especially to other linear hydromotor, consists of a cylinder (1) and piston (2) with a piston assembly (17). A lateral intake (7) and a bottom (8) with a supply (6) are provided on the cylinder (1). A screw (10) is fixed in the cylinder (1). Within the piston (2) with the piston assembly (17), there is a movably accommodated opening body (3) with orifices (16) pressed to a seating (11) by means of a spring (9). The said spring (9) is pressed in between the opening body (3) and a screw (14) that is fixed in the piston (2) with the piston assembly (17). The seating (11) is formed in the piston (2) with the piston assembly (17). A piston (4) is positioned movably in the piston (2) with the piston assembly (17). A ring (5) is positioned movably on the piston (2) with the piston assembly (17). A guide (12, 18 and 19) is formed in the piston (2) with the piston assembly (17).

Description

Technical field

The invention relates to a linear hydraulic motor which allows the transfer of hydrostatic energy to another hydraulic element, in particular to a further linear hydraulic motor, which is formed by a cylinder and a piston rod.

BACKGROUND OF THE INVENTION

The prior art linear hydraulic motors allow the transfer of hydrostatic energy to another hydraulic element, in particular to another linear hydraulic motor by guiding in a piston with a piston of a linear hydraulic motor. A guide in the piston with the piston rod of the first rectilinear hydraulic motor connects the working space of the first rectilinear hydraulic motor to the working space of the second rectilinear hydraulic motor, which means that by supplying hydrostatic energy to the working space of the first rectilinear hydraulic motor. This causes the pistons with the piston rod of both linear hydraulic motors to move depending on their internal resistance and external force load. With a large difference in load, only the less loaded piston with piston rod moves and the more loaded piston with piston rod moves only when the less loaded piston with piston rod reaches its extreme position. This operation is equally chaotic (uncontrolled) with any number of direct hydraulic motors involved.

If it is necessary to move the pistons with the piston rods of each of the connected linear hydraulic motors in the desired order independently of their load, a suitable control element or a set of hydraulic elements is provided between the inlet of the first linear hydraulic motor and the inlet of the second linear hydraulic motor. The hydraulic circuit created in this way is very demanding, complex and expensive. E.g. when used to control crane arms, this means a significant increase in the risk of accident in the event of damage to the hydraulic elements used.

SUMMARY OF THE INVENTION

SUMMARY OF THE INVENTION It is an object of the present invention to provide hydrostatic energy from one linear hydraulic motor to another hydraulic element, in particular to another linear hydraulic motor only after reaching the selected piston position with the piston rod of the linear hydraulic motor in the desired order. By solving this task, it is ensured that pistons with piston rods of linear hydraulic motors will move in the desired order independently of the load.

BRIEF DESCRIPTION OF THE DRAWINGS

The figure shows a linear hydraulic motor according to the invention.

DETAILED DESCRIPTION OF THE INVENTION

The linear hydraulic motor according to the figure is formed by a cylinder 1 and a piston 2 with a piston rod 17. A lateral inlet 7 and a bottom 8 with an inlet 6 are formed on the cylinder 1. A cylinder 10 is fixed in the cylinder 1. with the holes 16 pressed into the seat 11 by a spring 9. The spring 9 is compressed between the opening body 3 and the screw 14 which is fixed in the piston 2 with the piston rod 17. The seat 11 is formed in the piston 2 with the piston rod 17. The piston 4 is movably mounted in the piston The ring 5 is movably mounted on the piston 2 with the piston rod 17. In the piston 2 with the piston rod 17, guides 12, 18 and 19 are formed.

By supplying the hydrostatic energy via the inlet 6 to the working space 15 in the cylinder 1 in the direction from the bottom 8 to the screw 10, the piston 2 with piston rod 17 moves, the opening 3, piston 4, ring 5, spring 9, seat 11, screw 14 The piston rod 17, guides 12, 18, and 19. By further supplying hydrostatic energy by feeding 6 into the working space 15 in the cylinder 1 in the direction from the bottom 8 to the screw 10, the piston 2 with the piston rod 17, the opener 3, piston 4, spring 9, seat 11, screw 14, guides 12, 18 and 19. In this movement, the ring 5 is supported by the screw 10 and does not move. By further supplying hydrostatic energy through the inlet 6 to the working space 15, the piston 2 with the piston rod 17, the seat 11, the screw 14, the guides 12, 18 and 19 are moved in the cylinder 1 in the direction 1 from the bottom 8 to the screw 10 on the length z path. the ring 5 abuts against the screw 10 and does not move, the piston 4 is against the ring 5 and does not move, and the opening body 3 is against the piston 4 and does not move, the seat 11 moves away from the opening body 3, and transferring the hydrostatic energy from the working space 15 through the screw 14, the openings 16 in the opening body 3, the opening in the seat 11a and the guides 12, 18 to another hydraulic element. As the piston 2 moves with the piston rod 17 in the cylinder 1 in the direction from the bottom 8 to the screw 10, the working space 15 increases, the working space 13 decreases and the working fluid is forced out of the working space 13 into the inlet 7.

If the side inlet 7 is closed and the piston 2 with the piston rod 17 is loaded by an external force acting in the direction from the bottom 8 to the screw 10, the pressure in the working space 13 rises to move the piston 4 together with the opener 3 away from the screw 10 to the bottom 8 against the force of the spring 9 and the pressure in the working space 15. The opening body 3 thus moves away from the seat 11, thereby allowing the working fluid to flow from the working space 15 through the screw 14, holes 16 in the opening body 3, opening in the seat 11; lines 12, 18 to another hydraulic element.

Industrial usability

The linear hydraulic motor according to the invention can be used wherever it is necessary to bring hydrostatic energy from one linear hydraulic motor to another hydraulic element, especially to the other linear hydraulic motor and back only after reaching a certain position of the piston with the piston rod of the linear hydraulic motor.

Claims (4)

1. A linear hydraulic motor for transferring hydrostatic energy to another hydraulic element, in particular a further linear hydraulic motor formed by a cylinder and a piston rod, characterized in that in the linear hydraulic motor cylinder (1) there is a device for interconnecting the working space (15) with a hydraulic element comprising at least one movably mounted opener body (3) with a seat (11), a piston (4) and a guide (12). A linear hydraulic motor according to claim 1, characterized in that the device for connecting the working space (15) to the supply of another hydraulic element is located in the piston (2). A linear hydraulic motor according to claim 1, characterized in that the device for connecting the working space (15) to the supply of another hydraulic element is located in the piston rod (17). Linear hydraulic motor according to claims 1 to 3, characterized in that a screw (10) is arranged in the cylinder (1).