DE1906267A1 - Hydraulic control device, especially for controlling hydraulic winches - Google Patents

Description

EDUARDLORENCE 1Qnfi? Fi7

BERNHARDSEiDLER ^{l3UDiU /}

MARGRIT SEIDLER RECHTSANWÄLTE 8 Munich 22 Wictenmayarst.-aß23 Telephone (0811) 29 7194

Hydraulic control device, in particular for the control of hydraulic winches.

It is known that certain hydraulic motors and in particular the motors of winches constantly, for example, because of the presence of a load at the end of the cable the winch are exposed to a torque in a certain direction. Accordingly, they have a four-phase mode of operation which can be composed as follows:

I; Standstill and, if necessary, locking.

2. Driven rotation in a first direction (upward movement)

5. Driven rotation in a second direction (driven Downward movement). ^

4. Free rotation in the second direction (free downward movement ).

There were already hydraulic four-position distributors that ensure these four work phases. In the "free downward movement" position the occasional is also called "floating position", it is necessary to provide a speed limiting device,

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from a calibrated valve or preferably from a valve controlled by the pressure delivered by the pump. In any case, this must be known Embodiments, when the engine is at a standstill, the liquid dispensed by the pump through the The speed limit valve is lost, resulting in a waste of power.

The invention has set itself the goal of a to provide hydraulic control device for this type of engine or, in general, of receiving equipment that particularly suitable for controlling winch motors 1st.

According to the invention, it has two slide distributors, the slide of which can each assume many positions under the action of a spring that brings them back into a so-called rest position and are connected to a single control lever. A first distributor arranged in one line ensures the constant opening of this line in the rest position and, of course, in the other. Position the constant closing.

> ■ ■■■ ■■■■.;. ■■■

The second distributor of the type of a reversing device is \ : arranged in series with the first distributor and sets! him in optional connection with two other lines; the with a source of pressurized medium and connected to a container; ·

Finally, the slider of the first manifold is connected to a single-acting hydraulic Preßtopf, which is fed by the medium, which is conveyed to the second divider line connecting the ersteh comparison "of ';

If the control device for the Steuerriöhtühg one hydraulic receiver; be it an engine or one

Press pot, is used, the movement of which is in two opposite directions Directions can be done, the two feed lines of the receiver are parallel with the first Distributor arranged.

As will be shown below, these allow it Arrangements via a control with four positions have, wherein the one of the work phases of the recipient corresponds to a movement that is under the action of a external force happens.

Further features and advantages of the invention emerge from the following description of one in the attached Schematic drawing shown exemplary embodiment.

FigJ. shows a schematic view of a device according to FIG of the invention, and

Fig. 2 shows a circuit diagram of the device in the case of its Application for the control of a winch motor, with the various organs in the Standstill of the engine.

The drawing shows that the device essentially comprises two slide manifolds 1 and 2 which are arranged in series in a line 5. The slides la and 2a of this distributor are connected to a control lever 4 | Connected via a joint 4a and a sliding joint 4b. This' ■ slider that can take two positions, subject j also the action of springs 5 * they in their resting j return \ position, which is the one that is shown in the drawing in full strokes. The slide la is also designed at its free end in the form of a piston which is movable in a cylinder 6, the whole in this way a hydraulic, simple

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Acting control press pot represents that against the corresponding Spring 5 acts and is fed by a line 7 which derived from the line 3 between the two distributors is. . ■ _ "-. ' ·

The distributor 1 allows the optional closing of the Line 3, but ensures the constant in its rest position open this line. In contrast, the distributor is:

1 a reversing device and allows the optional connection of the line 3 with one of the two lines 8 and 9 and thus with a source of a pressurized medium, for example one in .Fig. Pump 2 shown 10 or "· with a dispensing container 11. In the rest position of the distributor 2 is the line 3 in connection with the pipe 9 and the discharge tank 11 _e in Fig. 2 it is shown that when using a device according to the invention for controlling of a hydraulic motor 12 of a winch or, more generally, of a receiver device, the feed lines 13 and 14 are connected to the top and over from the valve manifold 1 to the line 3 the rotation of the motor in the direction of the downward movement of the load is connected between the two slide distributors 1 and 2. .

Line 3 is on the other side of slide valve distributor 1 with the line Ö between the pump 10 and the distributor

2 connected. However, a check valve 15 is open This part of the line 3 is arranged and only allows the medium coming from the pump to flow through.

Finally, a junction 16 on the line 3 is behind connected to the distributor 1, this discharge line being connected to the line 9 of the container controlled valve 17, which in a completely usual manner and

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Way of the pressure of the medium at a certain point is controlled. In the present case, the control line 18 of this valve 17 is on the line 3 between the distributors 1. and 2 connected. The medium can only flow through the valve 17 to the dispensing container 11 when the Pressure in line l8 is high enough.

The operation of the hydraulic motor provided with its control device is accordingly as follows:

In the one shown in full lines on the figures Position, the motor is at a standstill, that of the pump 10 released medium flows through the check valve I5 and then the valve manifolds 1 and 2 without before his

j encounter any resistance to reflux to vessel.

When the control lever 4 is pivoted about its sliding joint 4b to bring it into the position shown in dotted lines A, the valve distributor 1 closes the line 3 · The medium conveyed by the pump then flows through the line 14 and brings the motor in the direction of the upward movement to turn, i.e. in the direction opposite to that in which it is under the action of the permanent force would rotate acting on its output shaft.

If the lever 4 is now rotated in order to bring it into position B, the reversing slide manifold 2 initially changes its position and connects the 3 "line with the pump 10. The pressure rises accordingly in the line 3 upstream of the slide manifold 1 and the slide this The distributor is pushed into the closed position by the press pot Ib-6, which is fed by the line 7.

The hydraulic motor 12 fed by the line 13 accordingly rotates in the downward direction of the load and the medium conveyed by the line 14 can only through

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drain l6. The pressure of the medium in the i Line 18 causes the controlled valve 1 to open? j and puts line 14 in communication with the reservoir. :;

! It should be noted here that the rotation of the. A j motor is controlled in the direction of downward movement so - |

j. 1

ι that its speed can be regulated by 'j • more or less on the reversing slide distributor £
: acts is what allows the opening of the controlled
To regulate valve, which thus plays the role of a speed limiting device. - '\ _ -' ■ -

I When finally the lever 4, which is in position B.

■ ^: is located, is brought into position C so that on . ,

I this V / eise the slide la against the pressure effect of the j

, Medium is pushed back, the line j5 is again · ί

! opened. . . "■

The lines IJ and 14 of the engine are accordingly under

the same pressure of the medium, "so that under the action '·; the load of the winch the motor turns without being driven "-;

to vjerden. This represents the phase of free descent. ' I represent a movement that is interrupted by the action ..! ■ is adjusted on the lever 4, to bring it to the position
! B to bring back.

ί It should be noted that the control system after the

'Invention grants great security. Indeed,

1 depends on the engine or, in general, on the reception

1 direction given freedom freely under the effect

I move an outside force, exercising a

! considerable effort on the part of the user ^

' on the lever 4, - to the effect of the pressure on the

! To overcome slider la. . ,

.i & VU ^ r

• ■■.; - 7 -

f Of course, the invention is not limited to the '

bene and shown embodiment is limited, but rather
On the contrary, declct all modifications and especially all
Areas of application , regardless of the type of controlled receiving device. [

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Claims (3)

• Pat en t a ns ρ r ü c'h e .) I Hydraulic control device, especially for the. Control of driven by a hydraulic motor - -. _S winches, characterized in that it has two slide distributors (1, 2) whose slides (1 a, 2 a), which are under the action of a spring (5) 'bringing them back into a "so-called rest position, can each assume two positions and are connected to a single control lever (4), whereby a first distributor (1) 'located in a line (3 J) ^{ensures the constant opening of this line in its 1} rest position, while the second -! distributor (2), which is in series with the first one, is a reversing distributor and brings the distributor (1) in optional connection with two other lugs (8 and 9) which are connected to a pressure medium source and a dispensing container, whereby the rest position of this second distributor corresponds to the connection between the first and the container: the slide of the first distributor is also connected to a press pot (Ib-6} of simple action that is fed by the medium, that between the, ice and the second distributor flows .ö -., ". - 2.) Device according to claim 1, characterized in that feie is applied to the control of a receiver (12), in particular a hydraulic motor, the output member of which is constantly exposed to a force in a certain direction, the two feed lines (Ij5 and lh) des Receiver itself are connected in parallel to the first distributor ¹ (1), while the feed line (IJ), which corresponds to the direction of the receiver in the direction of the constantly acting force, is connected between the first and second distributor is. 3rd,); ! Preparation according to. Claim 2, characterized in that that between the I-umpe (10) and the two-way distributor (2), one Management. (3) is closed, which ends at the recipient and an one after the other, -from the connection, a setback- - ■ "..- ^: "' 9 0 9 ZL 6, / 00 16 ...:., 8AD ORIGINAL 190B267 valve (15) > which only lets through the medium coming from the pump, a first discharge line (16) with a valve (17), the opening of which is controlled by the pressure of the medium between the first and second manifold, and the discharge line from this Valve to the container (11) leads, and a second discharge line are arranged, which is connected to the first distributor (l). $ 109846/001 Lee r se it e