DE2216331A1 - CONTROL UNIT FOR THE DRIVING SPEED PROPORTIONAL REGULATION OF A SPREADING DEVICE - Google Patents

Description

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The ·· Xerox copy

Applicant: is the original Ludwigshafen / Rh., 4-4.197?

f JSf Ries '■' P 4921 HMr - ■ _;

752 J3ruchsal (Baden). '. ■

Representative:

Patent attorneys

Dipl.-Ing. MoIf H. Fischer
Dipl.-Ing. Wolf-meter fisherman
67 Ludwigshafen am Rhein
Richard-Wagner-Strasse 30

Control unit for regulating a spreading device in proportion to the driving speed

The invention relates to a wheeling device for OroportionaleTC driving speed Control of a spreading device, which has a tochometer drive shaft and a liquid motor and pump is driven.

There are several types of interdependent control known from Streufiutomat, v; obei the conveyor belt, the the spreading material Ä.eüi spreading disc feeds, by an oil motor is driven, and the oil flow with it the speed of the motor with a controllable pump with electronic

309842/0106

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shear control controls. These devices are highly sensitive and have a complicated structure and require specialists who are skilled in the various fields for their operation Use of vehicles does not always have to bind. Specialists are required to rectify the faults, whereby the Eeparstüren are time consuming and expensive, as well as the continuous use of the spreader is not guaranteed. Another disadvantage of these known controls As with the servo control principle, it can be seen in the fact that it is very sensitive to corrosion and external influences are. Furthermore, these devices are expensive to buy.

The invention is based on the object of improving such a device in such a way that it performs a safe and precise control function with little technical effort and is so robust in structure that it does not function in the rough operating conditions without special maintenance is impaired.

This object is achieved according to the invention in that the speedometer drive shaft on a traction sheave drives the friction wheel lying on top of the disc and can be moved radially, with a screw spindle attached to the disc Nut is arranged and the cutter is connected to a control shaft driven by the spreading device and that a lever mechanism is hinged to the nut, " the one Hegel organ for the fluid flow driving the motor actuated.

An advantageous embodiment is that the In a partial housing arranged friction wheel from the friction disc can be lifted, the screw spindle and

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Nut receiving housing on one side of the partial housing is articulated and a pivot device is provided on the opposite side.

An axial piston pump is advantageous as a control element. a hydraulic ratio regulator or a suction control valve seen.

The inventive embodiment of such a Control unit has the significant advantage that with little technical effort a safe and exact control function from the speedometer shaft to a pump or a corresponding other regulating body can be exercised, whereby the spreading rate ■ of grit per route can be continuously adjusted / grounded »

The invention is described in the following description explained in more detail using an exemplary embodiment in conjunction with the drawing.

In the drawing, the control device according to the invention is shown schematically as having a partial housing 12 in which a friction wheel 4 is arranged displaceably on a profiled shaft 13. A speedometer drive shaft 3 is connected to the profile shaft 13. A slide 5, which is actuated via an adjusting lever 1 EU, is used to move the friction wheel 4. A friction disk 6, which is mounted in a housing 14, is located below the friction wheel 4. The position of the friction disk 6 in relation to the friction wheel 4 is such that the friction wheel 4 can be displaced radially to the disk 6 through its center point.

On the disc 6 is a threaded spindle 7 with spindle.

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Nut S arranged, the nut 8 in the housing is mounted and is connected to a control shaft 11 at its outer end. The control shaft 11 is on the other hand connected to the spreader via the spreader gearbox and also a reversing lever 9 is attached to the nut 8, which via a linkage 10, 15, for example the swash plate of an axial piston pump and thus its The delivery rate is adjusted so that the speed of the hydraulic motor driving the spreader is changed, As part of a pump controlled in this way, a three-way Hengen control valve can also be controlled or via a corresponding control valve can be used to control an oil pump on the suction side.

When the vehicle starts moving, Rieh begins to turn the speedometer drive shaft 3 , whereby the friction disk 6 is driven via the friction wheel 4 and the screw spindle 7 screws into the nut 3, which wanlt upwards and via the lever mechanism 9.15 » 1 # releases the flow to the oil motor, thereby the spreading device is driven accordingly and at the same time the control yelle 11, whereby the two speeds of the shafts 3, 11 oscillate and thus a driving speed-proportional drive of the spreading device takes place. If, for example, the application rate per unit of distance is to be changed, then the friction wheel is moved on the disc 6, which is continuously adjustable and the speedometer drive shaft 3 can also be moved to the right or left.

The sub-housing 12 is also on one side on a lever hinged to the housing 14, while a pivoting device 2 is located on the opposite side.

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Ils pivoting device 2 can, for example, be a hydraulic one or a pneumatic piston-cylinder unit is provided will. Should, for example, be there. :: "Control unit disengaged are, then the unit 2 is actuated, whereby ctäs ■ part housing 12 is pivoted upwards and thus the The friction wheel 4 lifts off the friction disk 6. When it is switched on, the unit 2 is unpressurized, so that the housing 12 "due to its own weight dps friction wheel 4 on the Washer 6 pushes ;. The / rail age print is applied in such a way that da '} the keibrad 4 at the same time "as overload protection for :: ßlockjsron serves some control part.

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309842/0106

Claims (3)

Potentan's sayings Control unit for driving speed proportional Cones of a spreader, which are driven by a tachometer drive shaft and is driven by a fluid motor and pump, characterized in that The Tachotneterantrj ebswelle (3) on a friction disc (6) overlying and radially to the disk (G) displaceable ^ ei'ored (4) drives, with the Washer (o) a subspindle (7) with nut (a) arranged int and the butter (8) with one of the wtreuvorricTitun.r ^ driven control shaft (11) is connected and that η η the cutter (■ '.') a; lebelirechanismus (9, 10, 15) is articulated, which is a sealing element for the liquid flow driving the rotor actuated. 2.) Control device according to claim 1, characterized in that in a 'Teilgehäu ^ e (12) arranged friction wheel (4) from the friction disc (6) can be lifted, eleven »ρ the screw spindle (7) and cutter (S) receiving Grehäuse (14) s ^ i is hinged on one side of the housing part (12) and a pivoting device (2) is provided on the opposite side. 3.) Control device according to claim 1, characterized in that- as Zcegelorgan an Axinl-KobenpuTnpe, a hydraulic shaft regulator or a suction control valve is provided «Ind. BAD ORs ¹ QJNAt