FI87601C - Hydraulic - Google Patents

Description

HYDRAULIC ENGINE 87 601

The invention relates to a hydraulic motor comprising a stator, a rotor placed centrally inside it, an end plate and a vent-5 brick plate. These together delimit two or more chambers forming circumferentially between the rotor and the stator in the circumferential direction, between which the closing areas remain. The rotor includes longitudinal grooves provided with radially movable cylindrical actuators. The valve plate includes oil inlet / outlet openings at each end of the 10 chambers in the circumferential direction, which define the transition area between the closing area and the working area.

DE 830 460, US 2,424,466, US 2,737,121, 15 US 3,119,345 and US 3,031,975 and the application DE 1 294 205 and DE 3 147 261 disclose various lamellar hydraulic motors. A typical way is to arrange the rotor eccentrically on a circular stator, as has been done, for example, in DE 1 294 205 and 3 147 261. The closing area consists of 20 contacts between the rotor and the stator, while the opposite side forms a working area. The rotor is formed with grooves in which lamellar or, as in these cases, cylindrical actuators are mounted. In these, trouble-free operation allows either only one actuator in the working area at a time or far-reaching 25 supply / discharge channels when using several actuators, which shortens the working area. In the working area, the actuators are lifted out of their grooves by the spring and oil pressure, allowing the inlet pressure to push them along the circumference to generate torque. Inlet / outlet ducts are provided on both sides of the shut-off area towards the working area to supply hydraulic oil to the valve plate. The circumference of these in the circumferential direction is referred to herein as the transition regions.

Both plate-shaped wings and cylindrical rods or tubes are used as institutions. With the latter, part of the surface contact can be changed to roll, which is more advantageous than sliding in terms of wear.

Hydraulically, many 40 similar technologies are used in pumps and motors. However, ensuring that the actuators rise is only necessary in motors, because in pumps, inertial forces always drive the actuators out of their grooves.

In order to increase the efficiency, the high starting torque and the power weight ratio 5, there should be two or more working areas formed by separate chambers. Most preferably, they are arranged symmetrically, as has been done, for example, in the hydraulic pump according to U.S. Pat. No. 2,424,466. However, it is desired to further increase the efficiency, which requires a compact structure 10 from the hydraulic motor in the first place, but also an even better structure in terms of flow technology. Often the reliability of motors and pumps has not been satisfactory, which has been due to e.g. poor functioning of the institutions.

The object of the present invention is to provide a hydraulic motor in which the efficiency and the starting torque can be further improved. The characteristic features of the invention are set out in the appended claims. The main principle of the invention is to provide a flow-technically correct structure, which has been found in the present invention. According to this, in the entire working area, the stator has a concentric cylindrical surface as the rolling surface of the actuators, so that no pressure shocks are observed in known motors and the length of the working area is also increased when using several actuators. The concentric working area of the stator '25 naturally leads to a sharply variable radius transition area, due to which the auxiliary supply channels according to claim 3 are almost necessary to ensure the rise of the actuators and thus the trouble-free operation of the entire motor. Such a structure, on the other hand, then allows for 30 multi-chamber compact motors because the transition range can be made narrow.

In the following, the invention will be described with reference to the accompanying figures, which show an embodiment of the invention.

. 35

Figure 1 shows a cross section of a hydraulic motor.

Figure 2 shows a cross-section from point A-A in Figure 1.

Figure 3 shows the valve plate seen from the direction of the chamber.

3 87601 «5 The main parts of the hydraulic motor are a rotor 2 mounted on the shaft 3, a cylindrical stator 1 surrounded by it and an end plate 4 and a valve plate 5 acting as the chamber ends. 4 and 5. 10 The housing 6 comprises supply connections 9, through which the channels lead to spaces P1 and P2, which spaces are limited in part to the valve plate 5. When pressure oil is fed to one of these joints, the valve plate directs the pressure oil into the chamber between the stator 1 and the rotor 2. and the oil exits through the valve plate 15 to one of these spaces and further to the second supply connection.

Figure 2 shows the arrangement of the rotor 2 and the sleeve-like actuators 6 inside the stator. Here, the stator comprises two 20 opposite closing regions 15 and two opposite working regions 19, which are formed by concentric surfaces. Between these there are transition areas 18 which are smoothly connected to these.

The rotor has eight grooves provided with sleeve-like • .25 actuators 6. Springs 10 are placed in the holes drilled in the grooves below these, which lift the actuators via a pin 11. The invention makes it possible to use a large number of actuators on the circumference without flow technical problems. The grooves of the actuators 6 are slightly openable, so that the pressurized oil 30 also reaches below the roller at the working area 19.

Immediately after the closing areas 15, at the transition area 18, supply outlets 12 and auxiliary supply openings 13 are formed in the valve plate 5 to ensure the supply and discharge of oil. The market 35 further includes a groove 17 against the valve plate which extends over the entire transition area.

4,87601

In addition to the inlet / outlet openings 12, the valve plate 5 also has auxiliary feed openings 13 located at the bottom of the rotor grooves and extending 18 ° in the transition region 18 starting immediately after the closing region 15. Such auxiliary feed openings have proved to be very necessary for the operation of the motor. These guarantee the rise of the institutions immediately after the closure.

Figure 3 shows the valve plate in detail. The Vent-10 brick plate includes four symmetrical inlet / outlet openings 12 and four auxiliary feed openings 13, one of which is marked with dashed lines in Figure 2. They are arranged symmetrically in the transition areas 18 so that they start immediately after the closing area 15. The channels leading to the auxiliary supply openings 13 are looser than the corresponding main supply channels 15 so that the actuators 6 can be lifted out of their grooves hydraulically.

Claims (2)

5 87601 CLAIMS Hydraulic motor comprising a stator (1), a rotor (2) placed centrally inside it, comprising 5 longitudinal grooves provided with radially movable cylindrical actuators (6), and an end plate (4) and a valve plate (5), which together delimit between the rotor and the stator circumferentially two or more chambers 10 forming working areas (19), between which there are closing areas (15); and wherein the valve plate (5) has oil inlet / outlet openings (12) at both ends of the chamber in the circumferential direction, defining a transition region (18) between the closure region (15) and the working region (19); and wherein the surfaces of the stator (1) closing area (15) and the working area (19) guiding the actuators are both formed concentric and the surfaces of the transition areas (18) therebetween are formed to evenly join at their ends, the actuators (6) being in the working area radially non-stationary and radially displaced only in transition areas; and wherein the valve plate (5) comprises auxiliary supply channels (13) located substantially at the bottom of the rotor grooves, separate from the main supply channels, for providing pressurized oil below the actuators to seal them against the guide surface, characterized in that the auxiliary supply channels (13) are arranged circumferentially on both sides and arranged to extend 12 ° to 25 ° in the case of a two-chamber motor, and 5 ° to 12 ° in the case of a three-chamber motor, towards the working area (19); and that in order to ensure the supply and discharge of oil, the edge of the stator (1) on the valve plate (5) side has grooves (17) at the supply / discharge openings (12) which extend in the circumferential direction over the entire transition area (18). 6 S 7 6 G '1 Hydraulic motor, for which the rotor (1), not fitted to the rotor (2), for 5 of the slurry, for which the rotary cylindrical function (6) , the same and a cross (4) and a ventilator (5), for example, a rotary chamber with images of a separate orifice (19) having a rotor and a stator in the peripheral-10 rinsing, with a single winding (15); and with the valve (5) a chamber having a peripheral connection to the perpendicular insertion / displacement means (12) for the purpose of adjusting the perpendiculars (18) to the spheres (15) and to the means (19); 15 och stärns (1) spärromrädes (15) och arbetsomrä-des (19) ytor, vilka styr funktionsorganen, bäda har utformats concentriskt och övergängsomrädenas (18) ytor mellan dessa har utformats att i sinän ämar jämnt ans-luta sig account varvid functionorganen (6) is provided with 20 orors for the operation of the radium and for the operation of the air in the form of an orb; and in addition to the valve (5) for the purpose of replacing the floor with the rotor placerade, from the entertainment channel to the separate channel-25 channel (13) for the anchorage of the function and the three-way function of the body, , in which the transmission channel (13) is placerade and peripheral rigging on the flywheel (15) and 30 of the anchorage chambers with a motor speed of 12 ° -25 °, and with a three-chamber motor of 5 ° - 12 ° ); with respect to the installation of the installation and operation of the installation (1) valve (5) connected to the area of the installation / installation of the installation / installation 35 (12) of the (17), single-row installation of the control unit (18) i peripherins riktning.