WO2005033504A1 - Hydraulic motor for driving rotational tools - Google Patents

Hydraulic motor for driving rotational tools Download PDF

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Publication number
WO2005033504A1
WO2005033504A1 PCT/CZ2004/000057 CZ2004000057W WO2005033504A1 WO 2005033504 A1 WO2005033504 A1 WO 2005033504A1 CZ 2004000057 W CZ2004000057 W CZ 2004000057W WO 2005033504 A1 WO2005033504 A1 WO 2005033504A1
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WO
WIPO (PCT)
Prior art keywords
fluid
chamber
hydraulic motor
outlet
shaft
Prior art date
Application number
PCT/CZ2004/000057
Other languages
French (fr)
Inventor
Miroslav Sterba
Original Assignee
Miroslav Sterba
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Miroslav Sterba filed Critical Miroslav Sterba
Publication of WO2005033504A1 publication Critical patent/WO2005033504A1/en

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03B—MACHINES OR ENGINES FOR LIQUIDS
    • F03B13/00—Adaptations of machines or engines for special use; Combinations of machines or engines with driving or driven apparatus; Power stations or aggregates
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B1/00—Cleaning by methods involving the use of tools
    • B08B1/30—Cleaning by methods involving the use of tools by movement of cleaning members over a surface
    • B08B1/32—Cleaning by methods involving the use of tools by movement of cleaning members over a surface using rotary cleaning members
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
    • B23Q5/00—Driving or feeding mechanisms; Control arrangements therefor
    • B23Q5/02—Driving main working members
    • B23Q5/04—Driving main working members rotary shafts, e.g. working-spindles
    • B23Q5/06—Driving main working members rotary shafts, e.g. working-spindles driven essentially by fluid pressure or pneumatic power
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25F—COMBINATION OR MULTI-PURPOSE TOOLS NOT OTHERWISE PROVIDED FOR; DETAILS OR COMPONENTS OF PORTABLE POWER-DRIVEN TOOLS NOT PARTICULARLY RELATED TO THE OPERATIONS PERFORMED AND NOT OTHERWISE PROVIDED FOR
    • B25F5/00—Details or components of portable power-driven tools not particularly related to the operations performed and not otherwise provided for
    • B25F5/005—Hydraulic driving means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03B—MACHINES OR ENGINES FOR LIQUIDS
    • F03B5/00—Machines or engines characterised by non-bladed rotors, e.g. serrated, using friction
    • A—HUMAN NECESSITIES
    • A46—BRUSHWARE
    • A46B—BRUSHES
    • A46B13/00—Brushes with driven brush bodies or carriers
    • A46B13/02—Brushes with driven brush bodies or carriers power-driven carriers
    • A46B13/04—Brushes with driven brush bodies or carriers power-driven carriers with reservoir or other means for supplying substances
    • A46B13/06—Brushes with driven brush bodies or carriers power-driven carriers with reservoir or other means for supplying substances with brush driven by the supplied medium
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/20—Hydro energy
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
    • Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working

Definitions

  • the invention relates to a hydraulic motor, particularly for driving rotational tools, comprising a chamber, which, at least at a part of its internal surface, has a shape of a solid of revolution, and is provided with a fluid inlet opening and with at least one fluid outlet opening, while in the chamber is arranged a rolling rotor, represented by a body of a rotary shape, which is supported on a holding device in a manner enabling precessional motion of the shaft of the rolling rotor.
  • a number of appliances are known in which hydraulic motors are used for driving rotational tools. With hand-held and mobile type appliances, it is advantageous to use the ordinary water-supply line as a source of the pressure fluid.
  • the Pelton turbine and modifications of the Pelton turbine, or various modifications of the water wheel are used as an hydraulic motor to serve the purpose of conversion of the pressure energy and kinetic energy of the water in the supply pipeline into the rotational energy, which is used for driving the particular appliance, which is often intended for utilization in a cleaning process using water.
  • the drawback of all these solutions is the fact that the torsional moment of the shaft is accompanied by excessively high speed, which is not suitable for the final utilization, and that is why the speed has to be reduced considerably by means of gears.
  • a fluid machine with a rolling rotor that comprises a chamber fitted with a fluid inlet and with at least one outlet opening.
  • the rolling rotor which is formed by a solid of revolution, is supported on a holding device before the outlet opening. This application does not deal with the removal of the driving fluid.
  • a hydraulic motor that comprises a chamber fitted with a fluid inlet and with at least one outlet opening.
  • a rolling rotor which is formed by a solid of revolution, is supported on a holding device.
  • At least the internal surface of the chamber has the shape of a solid of revolution.
  • the diameter of the chamber narrows, and the chamber is open on the side with the greatest diameter, and it is enclosed with a wall on the side with the smallest diameter.
  • In the middle of the wall is arranged an opening for the shaft carrying the rolling rotor. The shaft protrudes through the opening, with a clearance.
  • the shaft has a protrusion whose diameter is greater than the diameter of the opening in the wall.
  • a number of outlet openings are arranged in the wall around the opening.
  • the aim of the invention is to adapt the known fluid-driven rolling rotor machines in such a way that they are as simple as possible from the point of view of their design, and that they are suitable, after possible adaptations, both for the so-called dry working processes and for the so-called wet working processes.
  • the dry working process is to be interpreted as a working process without any fluid being brought to the working tool.
  • the wet working process is to be interpreted as a working process during which the cooling, cleaning, polishing, or rinsing fluid, or the fluid of another type is being brought to the working tool or to the surface being treated.
  • a hydraulic motor particularly for driving rotational tools, comprising a chamber, which, at least at a part of its internal surface, has a shape of a solid of revolution, and is provided with a fluid inlet opening and with at least one fluid outlet opening, while in the chamber is arranged a rolling rotor, represented by a body of a rotary shape, which is supported on a holding device in a manner enabling precessional motion of shaft of the rolling rotor, pursuant to the invention based on the fact that each fluid outlet opening is connected by a line with a fluid tank.
  • An advantage of the hydraulic motor pursuant to the invention is the fact that the hydraulic motor, using a simple constructional adaptation, makes it possible to return, without further utilization, the fluid into the fluid tank, which is important for the so-called dry working process. Also, from the point of view of the costs, the fluid saving is important, which is achieved by returning a portion of the flow rate into the tank.
  • a controllable throttle valve is arranged before the flow divider and/or in the flow divider and/or in the outlet.
  • an exchangeable tool is attached at the end of the shaft which protrudes from the chamber, and the flow divider outlet is directed into the area of the tool.
  • the chamber and the flow divider have been incorporated into a common handle.
  • Fig. 2 Hydraulic motor with a flow divider
  • Fig. 3 Hydraulic motor with a flow divider, and with an attached cleaning brush
  • Fig. 1 represents the first embodiment of the hydraulic-motor for driving rotational tools by means of pressure liquid.
  • the pressure liquid may be supplied not only by the represented pump 11, but, in fact, by any appliance providing pressure liquid, e.g. water supply line.
  • the hydraulic motor comprises chamber 1, which has the shape of a truncated cone with an angle of the lateral surface of 7°. On the end with the greater diameter, the chamber 1 is enclosed with a cover 2, which is provided with a fluid inlet opening 3. On the opposite end, in the middle of the front end of the chamber 1 is an opening. Through the opening protrudes a shaft 5, which carries a rolling rotor 4.
  • the rolling rotor 4 may have the shape of any solid of revolution, namely, not only the represented shape of a truncated cone, but also the shape of a sphere, hemisphere, hollow hemisphere, etc.
  • the shaft 5 passes through the opening at the chamber's front end with a clearance, which enables the shaft 5 to rotate and incline, since it performs the precessional motion.
  • the shaft 5 has a protrusion, whose diameter is greater than the diameter of the opening at the front end of the chamber 1.
  • the opening and protrusion may be fitted with a sealing, which has not been depicted, to prevent leakage of the fluid from the chamber 1.
  • the rolling rotor 4 is fixed to the shaft 5.
  • the end of the shaft 5, which protrudes from the chamber 1, can carry an adapter, which has not been depicted, for fastening exchangeable tools 10.
  • fluid outlet openings 6 At the front end of the chamber 1 have been made two fluid outlet openings 6, which are connected by means of lines 7 with a fluid tank 12. Of course only one outlet opening 6 can be used, however, due to the engineering reasons, it may sometimes be more useful to divide the total needed flow cross section among several outlet openings 6.
  • the fluid outlet openings 6 may be made in the sides of the chamber 1 as well. Such an embodiment is depicted in Fig. 2 and 3. To ensure optimum functioning of the hydraulic motor, the fluid outlet openings 6 should not be situated in the area of the sides which is, in Fig. 2, above the upper edge of the rolling rotor 4.
  • the pressure liquid is brought by the pump 11 through the inlet opening 3 into the chamber 1. From the chamber 1 , the pressure liquid flows out through the outlet openings 6, and then, through the lines 7, it flows back into the fluid tank 12.
  • the water flow causes the protrusion of the shaft 5 of the rotor 4 to lean against the front end of the chamber 1 , and at the same time, the rotor 4 inclines to the side (this is depicted with a dashed line in Fig. 1 ), and starts rolling on the inside surface of the circumferential shell of the chamber 1. This means that the shaft 5 performs the precessional motion.
  • the swing of the shaft 5 is negligible for the anticipated field of use.
  • these 'micro-oscillations' of the shaft 5 are useful, for example, during the removal of an old grime, because they help to disintegrate the grime.
  • Fig. 1 The embodiment according to Fig. 1 is used for applications requiring the liquid to be taken away from the working area, which makes it possible to use the hydraulic motor for the dry working processes.
  • Such an embodiment of the hydraulic motor can be used for example as a drill, grinder, winding apparatus, mixing apparatus, blender, electric generator drive or pump drive, as a polishing machine, planing machine, circular saw, screwdriver, nut runner, rotational toothbrush, milling machine, as a hydraulic drive of parts of machines, etc.
  • Hydraulic motors according to Fig. 2 and 3 differ from the version of Fig. 1 only by the number and placing of the outlet openings 6 of the chamber 1.
  • a flow divider 8 which divides the flow into two portions, has been arranged in line 7 of the embodiments according to Fig. 2 and 3.
  • One portion of the flow flows into the tank 12, the other portion of the flow is brought, through an outlet 9, to the area being treated.
  • the proportion between the flow into the fluid tank 12 and the flow through the outlet 9 can naturally be adjusted, and both the flow through the outlet 9 and the flow into the tank 12 can be zero as well.
  • Various design versions of the adjustable flow dividers 8 are generally known, and that is why it is not necessary to describe them to experts.
  • a throttle valve 14 can be inserted in the line 7.
  • the throttle valve 14 has been inserted, from the point of view of the flow, before the divider 8.
  • throttle valve 14 may be arranged directly in the divider 8 or in the outlet 9.
  • Fig. 3 shows that the tool 10, in this case a rotational brush, is attached at the end of the shaft 5, which protrudes from the chamber 1.
  • the pump 11 is delivering the liquid through the inlet opening 3 into the chamber 1 , and the water flow causes the rotor 4 to roll on the internal surface of the circumferential shell of the chamber 1.
  • the resulting precessional motion of the shaft 5 has a minimum swing (approximately no more than 1 mm), and so the rotational movement of the tool 10 prevails.
  • small oscillations of the tool 10 effectively disintegrate the grime on the surface 13, which is being cleaned, and so they considerably improve the resulting cleaning effect.
  • the liquid flows through the outlet opening 6, and through the throttle valve 14 into the flow divider 8, in which the flow is divided according to the actual setting of the divider 8 in such a way that a portion of the fluid flows through the outlet 9 to the surface 13, which is being cleaned, washing away the dirt.
  • the remaining portion of the fluid flows through the line 7 into the fluid tank 12.
  • the throttle valve 14 makes it possible to create fluid counter pressure, thus optimizing the functioning of the hydraulic motor.
  • Connection according to Fig. 3 may be used as a cleaning appliance for removing grime from the surface 13. Then, in such a case, it is useful if the chamber 1 and the throttle valve 14 and the flow divider 8 are incorporated into a common handle, which is connected by means of flexible hoses to the pump 11 and the fluid tank 12.
  • a typical example of the cheapest driving fluid is water, which is used for driving the hydraulic motor and, at the same time, it may serve for rinsing the surface 13, which is being cleaned. In some cases, it is advantageous to use various cleaning solutions as well.
  • the hydraulic motor pursuant to the invention can be used, if connected with appropriate brushes, for cleaning or polishing of various surfaces. Furthermore, it can also be used for grinding, drilling, milling, and mixing of materials, and, as well, for the body massage, and as a driving unit for special machines and tools, for example for milling of stone, cutting and drilling of stone, concrete and similar materials.
  • utilization of the hydraulic motor in cleaning and decontamination of animals, persons and things appears 'to be ''especially advantageous.
  • hydraulic motor pursuant to the invention in plants with the explosion hazard environment, where electric-motor spark ejection would bring about the explosion risk, that is, for example in chemical plants, in the mining industry, etc. Furthermore, utilization of the hydraulic motor is advantageous in humid and wet environments, where there is an intensified danger of an electrical accident.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Hydraulic Motors (AREA)

Abstract

A hydraulic motor, particularly for driving rotational tools, comprising a chamber (1), which, at least at a part of its internal surface, has a shape of a solid of revolution, and is provided with a fluid inlet opening (3) and with at least one fluid outlet opening (6). In the chamber (1) is arranged a rolling rotor (4), represented by a body of a rotary shape, which is supported on a holding device in a manner enabling precessional motion of the shaft (5) of the rolling rotor (4). Each fluid outlet opening (6) is connected by a line (7) with a fluid tank (12). Using e.g. a valve (8) in the lines (7) back to the fluid tank, a part of the fluid can be directed at a working piece (13). This renders the fluid-driven rolling rotor machines suitable for both the dry working processes and for the wet working processes.

Description

HYDRAULIC MOTOR FOR DRIVING ROTATIONAL TOOLS
Technical Field
The invention relates to a hydraulic motor, particularly for driving rotational tools, comprising a chamber, which, at least at a part of its internal surface, has a shape of a solid of revolution, and is provided with a fluid inlet opening and with at least one fluid outlet opening, while in the chamber is arranged a rolling rotor, represented by a body of a rotary shape, which is supported on a holding device in a manner enabling precessional motion of the shaft of the rolling rotor.
Background Art
A number of appliances are known in which hydraulic motors are used for driving rotational tools. With hand-held and mobile type appliances, it is advantageous to use the ordinary water-supply line as a source of the pressure fluid. With this type of appliance, the Pelton turbine and modifications of the Pelton turbine, or various modifications of the water wheel are used as an hydraulic motor to serve the purpose of conversion of the pressure energy and kinetic energy of the water in the supply pipeline into the rotational energy, which is used for driving the particular appliance, which is often intended for utilization in a cleaning process using water. The drawback of all these solutions is the fact that the torsional moment of the shaft is accompanied by excessively high speed, which is not suitable for the final utilization, and that is why the speed has to be reduced considerably by means of gears. At the same time, it is not possible, due to the principle reason, to design such a hydraulic motor with unlimitedly small dimensions, because the basic unit, which converts the water flow energy into the torsional moment energy of the shaft, is the rotor, and the smaller the hydraulic motor's rotor diameter, the higher the rotor speed, and the lower the torsional moment. This objectively results in the increased complexity of the gears and in the increased number of wheels of the gears.
From the international application PCT/CZ97/00034, which has been published under the number WO98/17910, the disclosure of which is incorporated by reference, a fluid machine with a rolling rotor is known that comprises a chamber fitted with a fluid inlet and with at least one outlet opening. The rolling rotor, which is formed by a solid of revolution, is supported on a holding device before the outlet opening. This application does not deal with the removal of the driving fluid.
From the international application PCT/CZ99/00013, which has been published under the number WO99/61790, the disclosure of which is incorporated by reference, a hydraulic motor is known that comprises a chamber fitted with a fluid inlet and with at least one outlet opening. Before the outlet opening, a rolling rotor, which is formed by a solid of revolution, is supported on a holding device. At least the internal surface of the chamber has the shape of a solid of revolution. The diameter of the chamber narrows, and the chamber is open on the side with the greatest diameter, and it is enclosed with a wall on the side with the smallest diameter. In the middle of the wall is arranged an opening for the shaft carrying the rolling rotor. The shaft protrudes through the opening, with a clearance. Inside the chamber, the shaft has a protrusion whose diameter is greater than the diameter of the opening in the wall. A number of outlet openings are arranged in the wall around the opening. For one of the advantageous versions, it is assumed that the fluid from the hydraulic motor is being removed out of the working area, which makes it possible to use the hydraulic motor for dry working processes as well. From the point of view of the design, this aim has been achieved by enclosing the chamber of the hydraulic motor in an additional, sealed-off housing. The drawback is the fact that another housing has to be used, in addition to the hydraulic-motor chamber, which causes the manufacturing costs to increase. Furthermore, this version neither deals with the flow control, nor makes it possible to bring at least a portion of the flow to the surface being treated.
So, the aim of the invention is to adapt the known fluid-driven rolling rotor machines in such a way that they are as simple as possible from the point of view of their design, and that they are suitable, after possible adaptations, both for the so-called dry working processes and for the so-called wet working processes. For the purposes of this application, the dry working process is to be interpreted as a working process without any fluid being brought to the working tool. Then, the wet working process is to be interpreted as a working process during which the cooling, cleaning, polishing, or rinsing fluid, or the fluid of another type is being brought to the working tool or to the surface being treated.
Disclosure of Invention
The aim that has been mentioned is achieved by means of a hydraulic motor, particularly for driving rotational tools, comprising a chamber, which, at least at a part of its internal surface, has a shape of a solid of revolution, and is provided with a fluid inlet opening and with at least one fluid outlet opening, while in the chamber is arranged a rolling rotor, represented by a body of a rotary shape, which is supported on a holding device in a manner enabling precessional motion of shaft of the rolling rotor, pursuant to the invention based on the fact that each fluid outlet opening is connected by a line with a fluid tank.
An advantage of the hydraulic motor pursuant to the invention is the fact that the hydraulic motor, using a simple constructional adaptation, makes it possible to return, without further utilization, the fluid into the fluid tank, which is important for the so-called dry working process. Also, from the point of view of the costs, the fluid saving is important, which is achieved by returning a portion of the flow rate into the tank.
If the fluid is to be brought to the area being treated, and precise dosing is required of the volume being brought to the area, it is advantageous if a controllable flow divider with an outlet is inserted in the fluid line.
For optimum setting of the pressure conditions in the chamber of the hydraulic motor, it is advantageous if a controllable throttle valve is arranged before the flow divider and/or in the flow divider and/or in the outlet.
In an advantageous embodiment, an exchangeable tool is attached at the end of the shaft which protrudes from the chamber, and the flow divider outlet is directed into the area of the tool.
For easy control, the chamber and the flow divider have been incorporated into a common handle.
Brief Description of Drawings
The hydraulic motor pursuant to the invention will be described in detail by means of examples of particular embodiments represented in the drawings, in which individual Fig. represent the following:
Fig. 1 - Hydraulic motor without a flow divider
Fig. 2 - Hydraulic motor with a flow divider
Fig. 3 - Hydraulic motor with a flow divider, and with an attached cleaning brush
Modes for Carrying Out the Invention
Fig. 1 represents the first embodiment of the hydraulic-motor for driving rotational tools by means of pressure liquid. The pressure liquid may be supplied not only by the represented pump 11, but, in fact, by any appliance providing pressure liquid, e.g. water supply line. The hydraulic motor comprises chamber 1, which has the shape of a truncated cone with an angle of the lateral surface of 7°. On the end with the greater diameter, the chamber 1 is enclosed with a cover 2, which is provided with a fluid inlet opening 3. On the opposite end, in the middle of the front end of the chamber 1 is an opening. Through the opening protrudes a shaft 5, which carries a rolling rotor 4. The rolling rotor 4 may have the shape of any solid of revolution, namely, not only the represented shape of a truncated cone, but also the shape of a sphere, hemisphere, hollow hemisphere, etc. The shaft 5 passes through the opening at the chamber's front end with a clearance, which enables the shaft 5 to rotate and incline, since it performs the precessional motion. Inside the chamber 1, the shaft 5 has a protrusion, whose diameter is greater than the diameter of the opening at the front end of the chamber 1. The opening and protrusion may be fitted with a sealing, which has not been depicted, to prevent leakage of the fluid from the chamber 1. In the chamber 1 , the rolling rotor 4 is fixed to the shaft 5. The end of the shaft 5, which protrudes from the chamber 1, can carry an adapter, which has not been depicted, for fastening exchangeable tools 10.
At the front end of the chamber 1 have been made two fluid outlet openings 6, which are connected by means of lines 7 with a fluid tank 12. Of course only one outlet opening 6 can be used, however, due to the engineering reasons, it may sometimes be more useful to divide the total needed flow cross section among several outlet openings 6. The fluid outlet openings 6 may be made in the sides of the chamber 1 as well. Such an embodiment is depicted in Fig. 2 and 3. To ensure optimum functioning of the hydraulic motor, the fluid outlet openings 6 should not be situated in the area of the sides which is, in Fig. 2, above the upper edge of the rolling rotor 4.
The pressure liquid is brought by the pump 11 through the inlet opening 3 into the chamber 1. From the chamber 1 , the pressure liquid flows out through the outlet openings 6, and then, through the lines 7, it flows back into the fluid tank 12. The water flow causes the protrusion of the shaft 5 of the rotor 4 to lean against the front end of the chamber 1 , and at the same time, the rotor 4 inclines to the side (this is depicted with a dashed line in Fig. 1 ), and starts rolling on the inside surface of the circumferential shell of the chamber 1. This means that the shaft 5 performs the precessional motion. With respect to the fact that the difference between the maximum diameter of the rotor 4 and the diameter of the chamber 1 at the area, where the rotor 4 is rolling, is approximately no more than 1 mm, the swing of the shaft 5 is negligible for the anticipated field of use. However, these 'micro-oscillations' of the shaft 5 are useful, for example, during the removal of an old grime, because they help to disintegrate the grime.
The embodiment according to Fig. 1 is used for applications requiring the liquid to be taken away from the working area, which makes it possible to use the hydraulic motor for the dry working processes.
Such an embodiment of the hydraulic motor can be used for example as a drill, grinder, winding apparatus, mixing apparatus, blender, electric generator drive or pump drive, as a polishing machine, planing machine, circular saw, screwdriver, nut runner, rotational toothbrush, milling machine, as a hydraulic drive of parts of machines, etc.
However, with some versions, it is useful if a portion of the liquid from the chamber 1 is brought to the area of the tool 10. The versions according to Fig. 2 and 3 serve this purpose.
Hydraulic motors according to Fig. 2 and 3 differ from the version of Fig. 1 only by the number and placing of the outlet openings 6 of the chamber 1. In addition to this, a flow divider 8, which divides the flow into two portions, has been arranged in line 7 of the embodiments according to Fig. 2 and 3. One portion of the flow flows into the tank 12, the other portion of the flow is brought, through an outlet 9, to the area being treated. The proportion between the flow into the fluid tank 12 and the flow through the outlet 9 can naturally be adjusted, and both the flow through the outlet 9 and the flow into the tank 12 can be zero as well. Various design versions of the adjustable flow dividers 8 are generally known, and that is why it is not necessary to describe them to experts.
In addition to the flow divider 8, a throttle valve 14 can be inserted in the line 7. In embodiments according to Fig. 2 and 3, the throttle valve 14 has been inserted, from the point of view of the flow, before the divider 8. However, throttle valve 14 may be arranged directly in the divider 8 or in the outlet 9.
Fig. 3 shows that the tool 10, in this case a rotational brush, is attached at the end of the shaft 5, which protrudes from the chamber 1. The pump 11 is delivering the liquid through the inlet opening 3 into the chamber 1 , and the water flow causes the rotor 4 to roll on the internal surface of the circumferential shell of the chamber 1. The resulting precessional motion of the shaft 5 has a minimum swing (approximately no more than 1 mm), and so the rotational movement of the tool 10 prevails. However, small oscillations of the tool 10 effectively disintegrate the grime on the surface 13, which is being cleaned, and so they considerably improve the resulting cleaning effect. From the chamber 1 , the liquid flows through the outlet opening 6, and through the throttle valve 14 into the flow divider 8, in which the flow is divided according to the actual setting of the divider 8 in such a way that a portion of the fluid flows through the outlet 9 to the surface 13, which is being cleaned, washing away the dirt. The remaining portion of the fluid flows through the line 7 into the fluid tank 12. By adjusting the divider 8, the total flow may be directed through the line 7 into the tank 12, which results in the flow through the outlet 9 being zero. The throttle valve 14 makes it possible to create fluid counter pressure, thus optimizing the functioning of the hydraulic motor.
Measurements have been carried out with a hydraulic motor that has the rotor 4 with a diameter of 42 mm and the chamber 1 with a diameter of 43.6 mm at the area where the rotor 4 is rolling. The measurements have proved that, depending on the required value of the torsional moment, it is possible to control the total flow of the liquid through the hydraulic motor in the range from 0.12 to 0.25 litres per a second at a hydrostatic pressure of the liquid at the source equalling to 0.42 MPa. Then, working speed of the tool 10 ranges from 245 to 160 rpm, and a portion from 0 % to 100 % of the overall volume of the liquid flowing from the chamber 1 of the hydraulic motor may be brought through the outlet 9 to the tool 10.
Connection according to Fig. 3 may be used as a cleaning appliance for removing grime from the surface 13. Then, in such a case, it is useful if the chamber 1 and the throttle valve 14 and the flow divider 8 are incorporated into a common handle, which is connected by means of flexible hoses to the pump 11 and the fluid tank 12.
A typical example of the cheapest driving fluid is water, which is used for driving the hydraulic motor and, at the same time, it may serve for rinsing the surface 13, which is being cleaned. In some cases, it is advantageous to use various cleaning solutions as well.
Industrial Applicability
The hydraulic motor pursuant to the invention can be used, if connected with appropriate brushes, for cleaning or polishing of various surfaces. Furthermore, it can also be used for grinding, drilling, milling, and mixing of materials, and, as well, for the body massage, and as a driving unit for special machines and tools, for example for milling of stone, cutting and drilling of stone, concrete and similar materials. In particular, utilization of the hydraulic motor in cleaning and decontamination of animals, persons and things appears 'to be ''especially advantageous.
It is advantageous to use the hydraulic motor pursuant to the invention in plants with the explosion hazard environment, where electric-motor spark ejection would bring about the explosion risk, that is, for example in chemical plants, in the mining industry, etc. Furthermore, utilization of the hydraulic motor is advantageous in humid and wet environments, where there is an intensified danger of an electrical accident.

Claims

1. A hydraulic motor, particularly for driving rotational tools, comprising a chamber (1), which, at least at a part of its internal surface, has a shape of a solid of revolution, and is provided with a fluid inlet opening (3) and with at least one fluid outlet opening (6), while in the chamber (1) is arranged a rolling rotor (4), represented by a body of a rotary shape, which is supported on a holding device in a manner enabling precessional motion of the shaft (5) of the rolling rotor (4), characterized by the fact that each fluid outlet opening (6) is connected by a line (7) with a fluid tank (12).
2. The hydraulic motor as in Claim 1 , characterized by the fact that in the fluid line (7) is inserted an adjustable flow divider (8) with an outlet (9).
3. The hydraulic motor as in Claim 1 or 2, characterized by the fact that an adjustable throttle valve (14) is arranged before the flow divider (8) and/or in the flow divider (8) and/or in the outlet (9).
4. The hydraulic motor as in Claim 2 or 3, characterized by the fact that an exchangeable tool (10) is attached at the end of the shaft (5), which protrudes from the chamber (1), while the outlet (9) of the divider (8) is directed to the area of the tool (10).
5. The hydraulic motor as in any of the previous Claims 2 to 4, characterized by the fact that the chamber (1) and the flow divider (8) are incorporated into a common handle.
PCT/CZ2004/000057 2003-10-09 2004-09-20 Hydraulic motor for driving rotational tools WO2005033504A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CZPUV2003-14685 2003-10-09
CZ200314685U CZ13837U1 (en) 2003-10-09 2003-10-09 Hydraulic motor

Publications (1)

Publication Number Publication Date
WO2005033504A1 true WO2005033504A1 (en) 2005-04-14

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CZ (1) CZ13837U1 (en)
WO (1) WO2005033504A1 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7762762B2 (en) * 2004-01-23 2010-07-27 Miroslav Simera Rolling fluid machine especially with a liquid spraying at the output
CN103251365A (en) * 2013-05-14 2013-08-21 济南大学 Dish washing machine using water flow as power
WO2016091787A1 (en) * 2014-12-08 2016-06-16 Novartis Ag Method and device for cleaning deposited material from a molding surface of a mold for forming ophthalmic lenses
CN106623013A (en) * 2016-12-08 2017-05-10 包头中车电机有限公司 Cleaning device for electronic rotor

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Publication number Priority date Publication date Assignee Title
US1362420A (en) * 1919-03-13 1920-12-14 Howard Charles Clifford Motor for automobile-washers
DE422574C (en) * 1925-12-03 Heinrich Baumann Pipe cleaning device with a water turbine rotating within a housing to drive the drill head for steam boiler, condenser, preheater u. Like. Pipe systems
US3302923A (en) * 1965-01-13 1967-02-07 Earl A Thompson Turbine
GB1112954A (en) * 1966-03-24 1968-05-08 Armyansky Nii Mekh I Elek Fika Mobile device for feeding liquid fertilizers
DE2433575A1 (en) * 1974-07-12 1976-01-29 Otto Hans Hansmann Massager/cleaner with brush rotated by water-driven wheel - two part housing has connections for flow and return water supply
WO1999003392A1 (en) * 1997-07-16 1999-01-28 Brendon Limited Rotating tools
WO1999061790A1 (en) * 1998-05-22 1999-12-02 Sedlacek Miroslav Hydraulic motor

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE422574C (en) * 1925-12-03 Heinrich Baumann Pipe cleaning device with a water turbine rotating within a housing to drive the drill head for steam boiler, condenser, preheater u. Like. Pipe systems
US1362420A (en) * 1919-03-13 1920-12-14 Howard Charles Clifford Motor for automobile-washers
US3302923A (en) * 1965-01-13 1967-02-07 Earl A Thompson Turbine
GB1112954A (en) * 1966-03-24 1968-05-08 Armyansky Nii Mekh I Elek Fika Mobile device for feeding liquid fertilizers
DE2433575A1 (en) * 1974-07-12 1976-01-29 Otto Hans Hansmann Massager/cleaner with brush rotated by water-driven wheel - two part housing has connections for flow and return water supply
WO1999003392A1 (en) * 1997-07-16 1999-01-28 Brendon Limited Rotating tools
WO1999061790A1 (en) * 1998-05-22 1999-12-02 Sedlacek Miroslav Hydraulic motor

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7762762B2 (en) * 2004-01-23 2010-07-27 Miroslav Simera Rolling fluid machine especially with a liquid spraying at the output
CN103251365A (en) * 2013-05-14 2013-08-21 济南大学 Dish washing machine using water flow as power
WO2016091787A1 (en) * 2014-12-08 2016-06-16 Novartis Ag Method and device for cleaning deposited material from a molding surface of a mold for forming ophthalmic lenses
CN106999990A (en) * 2014-12-08 2017-08-01 诺华股份有限公司 Method and apparatus for cleaning deposition materials from the molded surface of mould for forming ophthalmic lens
US10035177B2 (en) 2014-12-08 2018-07-31 Novartis Ag Method and device for cleaning deposited material from a molding surface of a mold for forming ophthalmic lenses
CN106999990B (en) * 2014-12-08 2019-12-06 诺华股份有限公司 Method and apparatus for cleaning deposited material from a molding surface of a mold for forming an ophthalmic lens
CN106623013A (en) * 2016-12-08 2017-05-10 包头中车电机有限公司 Cleaning device for electronic rotor
CN106623013B (en) * 2016-12-08 2019-07-26 包头中车电机有限公司 A kind of rotor cleaning device

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