JPS621693A - Hydraulic working device - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a hydraulic actuation device for pivoting movements of knuckles, such as steel knuckles, requiring rotational movement of less than 360° for actuation.

[Conventional technology]

The conventional actuation device for knuckles of the above type is.

It is a mechanical transmission or a hydraulic actuation device that uses a lever to perform a translational linear movement on the knuckle, thereby causing a pivoting movement to be performed by varying forces depending on the position of the knuckle.

Known actuating devices of the above type are furthermore particularly suitable for steering knuckles which, due to the force acting against the knuckles, can undergo a curvature that deviates from the theoretical axis of the knuckles and also an elongation due to changes in temperature. It has a fixed point of action on the knuckle, which is connected to the difficulties associated with it.

[Means to solve problems]

By using the hydraulic actuating device according to the invention, the above-mentioned disadvantages are avoided due to the fact that the points of action of the five actuating devices are equidistant from the central axis of the knuckle. Furthermore, the point of application can be moved in the actuating device in the longitudinal direction of the knuckle, and the knuckle of the bracket can be bent with respect to the theoretical longitudinal axis without any special forces acting between the actuating device and the knuckle. Can be done.

These advantages are achieved by a hydraulically actuated device according to the invention in accordance with the features set out in the claims.

The actuating device according to the invention is very suitable for swivel knuckles with a swivel movement of more than 300', for which purpose two pistons are used, one fixed and the other movable. It may be appropriate to use two pistons of each type to actuate the steering knuckles, and three pistons may be preferred for steering knuckles on large vessels with a normal turn of 2 x 35°. .

[Implementation row]

The invention will be explained below with reference to the drawings.

An annular guide path is constituted by the lower part 2 and the upper part l of the actuating device, with a support ring arranged on the inner circumference of the guide path. This isometric guide path is arranged around and approximately at right angles to the knuckle, which in this example is the steering knuckle 8.

Two pistons 5 are fixed diametrically opposite each other in the lower part 2, and a support ring is provided between the two pistons 4, which are also diametrically opposite each other and fixed in the lower part. It is fixed at 3. All pistons have seals 11 on both sides that abut sealingly with the normal passages.

The upper part l is fixedly connected to the lower part 2, while the support ring 3 is pivotable in a sealing manner relative to the upper part and the lower part. In this way, the piston 4 fixed to the support ring is arranged in a regular guide path with respect to the piston 5 fixed to the lower part 2.

Both the upper part 1 and the lower part 2 have two grooves which together form passages 9 and 10 for hydraulic fluid. From the passage 1o, a connecting passage 12 is arranged in an outlet 13 close to one side of one of the pistons 5 mounted in the lower part 2, and a corresponding connecting passage and an output are provided from the passage 9 to the outlet 13 of one of the pistons 5 mounted on the lower part 2. placed on the side. Correspondingly, a coupling device is arranged in the lower part 2 for supplying and discharging hydraulic fluid to and from the passages 9 and 10, respectively.

A directional cock 14 is arranged in each connecting channel 12, by means of which a connection is achieved between each channel 9 and 10 and the guide channel or from the guide channel to a reservoir 15 arranged in the lower part 2. By providing the directional cock 14, it is possible, if desired, to reduce the pressure in areas where the guide path is present, such as due to defects, leaks, etc., and where the guide path is present.

The lower part 2 is suitably provided with seven flange 16 for mounting in a suitable position.

By pressurizing one of the passages, such as passage 10, the hydraulic fluid flows through the connecting passage 12 and out the outlet 13 into the two diametrically opposed cavities of the guide path. a piston 4 flowing into the support ring 3 and fixed to the support ring 3;
is pushed away from the corresponding stationary piston 5, while the hydraulic fluid on the other side of the piston 5 is discharged into the passage 9 through the oppositely disposed outlet and the connecting passage to drain the hydraulic fluid into the passage 9. It is returned to the storage section 15 connected to the pressure unit.

This will cause the support ring to be moved relative to the lower part 2 and thereby relative to the two diametrically opposed pins 7 connected to the steering knuckle 8. The pins 7 are mounted in the lining 17 of the bearing such that they can pivot relative to the lining. Each lining 17 is arranged between two guide devices 18 such that it is moved axially with respect to the support ring 3, thereby allowing possible expansion and contraction caused by temperature changes in the steering knuckle 8.

〔Effect of the invention〕

In the illustrated embodiment, the pin 7 is attached to a rotor 6, which in turn is rigidly connected to a steering knuckle 8.

Depending on the particular embodiment of the hydraulically actuated device according to the invention, the steering knuckle 8 can be pivoted in both directions by means of the passages 9 or 10.

The connection between the pin 7 and the support ring 3 is thereby affected by variations in the length of the pin 7 due to temperature changes, or by curvature of the steering knuckle from its theoretical center axis due to forces acting against the steering knuckle or the rudder. does not produce any special force.

This oblique mounting of the actuating device on the steering knuckle does not affect the relative relationship between the actuating device and the steering knuckle. A possible elongation of the rotor 6 is also compensated by the bearing lining 17.

[Brief explanation of the drawing]

1 is a partially cutaway perspective view of a hydraulically actuated device according to the invention, with various parts of the device removed for clarity of the drawing, and FIG. 2 is a plan view of the device according to the invention. 3 is a sectional view of the fully actuated piston passing through the piston, and FIG. 4 is a cross-sectional view taken along the line [V-IV
FIG. 5 is a schematic illustration of an actuating device according to the invention including a hydraulic unit.

Claims (1)

[Claims] 1. A hydraulically actuated device for the pivoting movement of a knuckle, in particular a steering knuckle, comprising a support ring (3) in which an annular guide path for the pistons (4, 5) is connected to the knuckle (8). ), whereby a support ring (3) constitutes the inner periphery of said guide channel and is movable in a sealing manner with respect to the lower part (2), and is attached to the lower part and covers the remainder of said guide channel. a piston (4) further comprising an upper part forming part of the lower part (2), with at least one piston (5) being attached to the lower part (2), whereby the passages (9, 10) are movable;
and a diametrically opposed cavity between the stationary piston (5) and the fixed piston (5) for the inflow and outflow of hydraulic fluid, the support ring (3) being arranged in a corresponding bearing lining on the inner circumference of the support ring. pivotably and movable in the direction of its axis with the steering knuckle (8) by means of two diametrically opposed pins (7) connected to the knuckle (8) received in the steering knuckle (8); A hydraulic actuation device for rotating motion of a knuckle, characterized by: 2. Actuating device according to claim 1, characterized in that a sealing (11) is arranged on each side of each piston (4, 5), said sealing bearing sealingly against the guide path. . 3. The side of each fixed piston (5) facing the support ring (3) is chamfered to the cylindrical surface parallel to the axis, so that the piston (5) can be mounted without removing the support ring (3).
3. The actuating device according to claim 2, wherein the actuating device allows for the attachment and detachment of the actuator. 4. The bearing lining is a rectangular bearing boss with a central hole for rotating the pin (7), and the lining further includes a support ring (
3) Actuating device according to claim 1, characterized in that it is vertically movable by means of an upper guide device (18). 5. Actuating device according to claim 1, characterized in that the reservoir for hydraulic fluid is arranged in the lower part of the lower part (2). 6. The hydraulic fluid passages (9, 10) are two concentric annular passages (9, 10) in the lower part (2) and the upper part (1), one of the annular passages being connected via a connecting passage. Claim 1, characterized in that each fixed piston (5) is connected to one side and, corresponding to said passage, another annular passage is connected to the other side of said piston (5). Actuating device as described in section. 7. Each outlet is connected to the corresponding annular passage by a directional cock, which cock in another position connects the outlet with a reservoir for releasing hydraulic fluid pressure. Actuating device according to range 5 or 6.