ES2562483T3 - Hydraulic motor that includes a hydraulic power unit - Google Patents

Abstract

A hydraulic motor comprising: a hydraulic power unit (1) comprising a hydraulic tube (100) comprising a hollow portion that has an open front end and that is filled with a fluid, a device (200) for amplifying the amplitude that is arranged on the rear side of the hydraulic tube (100), an oscillator (300) that is arranged on the rear side of the amplification amplifier device (200), so that it deforms and increases and decreases a pressure in the inside of the hydraulic tube (100) and an oscillator head (310) that is fixed to a front end of the oscillator (300), in which the hydraulic tube (100) extends in a longitudinal direction, comprises a metal tube ( 112) formed on the outside thereof and an elastic tube (114) formed on the inside thereof, and is configured in the form of a double tube having an external hollow (116) and an internal hollow (118), in which the amplifier device (200) Amplification ification comprises a cover (212) that has a recess formed therein, an intumescent tube (214) that is disposed inside the cover (212) and has a cylindrical recess therein, a plurality of rods vibratory (230) that are arranged in the hollow of the intumescent tube (214), and an elastic piece (220) that is arranged in the hollow of the intumescent tube (214), intersects with the hollow, and is disposed between the plurality of vibrating rods (230), in which the oscillator (300) moves bidirectionally and changes a pressure inside the hydraulic tube (100) by applying a deformation force to the vibrating rod (230) according to its deformation, so that a fluid inside the hydraulic tube (100) is extruded outward or flows into the hydraulic tube (100).

Description

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DESCRIPTION

Hydraulic motor that includes a hydraulic power unit Background

1. Field

One or more embodiments of the present invention are about a hydraulic motor and, more particularly, about a hydraulic power unit that includes a ceramic oscillator and introduces and extrudes a fluid together with the ceramic oscillator, and a hydraulic motor that includes The hydraulic power unit generates rotational power.

2. Description of the related technique

In general, the energy (rotational power) to drive vehicles, various machines or mechanisms is obtained by burning a fossil fuel. When the fossil fuel is burned, a large amount of carbon dioxide is generated, and various harmful substances are mass produced, which is a fundamental cause of environmental pollution. In addition, it is well known that there is a limitation on relying on fossil fuels, because the amount of fossil fuel such as crude oil or coal that exists on Earth is limited. For this reason, human beings have tried to develop new sources of energy and have carried out research on procedures to effectively use existing sources of energy.

Among the results of the research achieved so far, a procedure has been developed to obtain energy for a vehicle or a machine using electric energy obtained by charging bats, a procedure for burning existing fossil fuel and a tubing procedure using a baton. However, existing energy generating devices (motors) that use electric power have a performance limit. For this reason, there are more and more demands to develop new energy generating devices that do not generate carbon dioxide when they are used, use ecological electric energy and have a better performance and a long life.

On the other hand, EP2 587 062 A1 discloses a "hydraulic power unit having a ceramic oscillator, and a hydraulic motor that includes the hydraulic power unit". This hydraulic power unit includes a ceramic oscillator and can introduce or extrude a fluid due to a ceramic oscillator operation, and a hydraulic motor that includes the hydraulic energy unit and generates a rotational force. However, the hydraulic power unit simply has low energy efficiency.

Summary

One or more embodiments of the present invention include a new motor that generates rotational power using ecological ceramic deformation energy, the engine having improved performance and a long service life.

One or more embodiments of the present invention include a hydraulic power unit that is environmentally friendly, has a long lifespan and can extrude a working fluid using an intense force, which can be used to form a new engine.

Additional aspects will be defined in part in the following description and, in part, will be apparent from the description, or can be learned by the practice of the presented embodiments.

According to one or more embodiments of the present invention, a hydraulic motor includes a hydraulic power unit comprising a hydraulic tube comprising a hollow portion that has an open front end and is filled with a fluid, an amplification amplification device. which is arranged on the rear side of the hydraulic tube, an oscillator that is arranged on the rear side of the amplification amplifier device, so that it deforms and increases and reduces a pressure inside the hydraulic tube, and a head of the oscillator that is fixed to a front end of the oscillator. The hydraulic tube extends in a longitudinal direction, comprises a metal tube formed on the outside thereof and an elastic tube formed on the inside thereof, and is configured in the form of a double tube having an external hollow and an internal hollow. The amplification amplification device comprises a cover that has a recess formed therein, an intumescent tube that is arranged inside the cover and has a cylindrical recess therein, a plurality of vibrating rods that are arranged in the hollow of the intumescent tube, and an elastic piece that is arranged in the hollow of the intumescent tube, intersects with the hollow, and is disposed between the plurality of vibrating rods. The oscillator moves bidirectionally and changes a pressure inside the hydraulic tube by applying a deformation force to the vibrating rod according to its deformation, so that a fluid is extruded inside the hydraulic tube outwards or flows into the tube hydraulic.

The oscillator can be deformed in an inward direction of the hollow portion of the hydraulic tube and in an opposite direction when electricity is applied to it by an inverse piezoelectric effect.

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The hydraulic tube may include a front position fixing bracket and a rear position fixing bracket that is arranged inside the metal tube and makes contact with a front side and a rear side of the elastic tube, and a device for connection that is arranged at a front end of the metal tube and is arranged so that it makes contact with the front side of the support for fixing the position of the elastic tube. The position fixing support can be arranged so that it makes contact by means of a sealing ring with at least one vibrating rod included in the amplification amplification device. At least a portion of the connection device seals the outer hole. An opening may be formed in at least one portion of the connection device, to cause the inner and outer hollow to communicate with each other. A side through hole can be formed on one side of the metal tube, to cause the outer and outer hollow to communicate with each other.

The hydraulic tube may include a plurality of first elastic links. The elastic tube may be formed as a corrugated tube having a plurality of corrugations that extend in a longitudinal direction. The first elastic link may be arranged so as to make contact with a concave portion of the corrugation and to extend in a longitudinal direction along the corrugation. One end of the first elastic link can make contact with the connection device through the front position fixing bracket, the other end thereof can make contact with the vibrating rod through the position fixing bracket, and the tube The elastic can be pressed in a horizontal direction according to a deformation force of the vibrating rod.

The first elastic bond can be formed by bending an elongated steel wire. The first elastic link may include first curved portions, which are both sides of the steel wire bent inward in a longitudinal direction, and second curved portions, which are both ends of the steel wire bent and joined toward the center through the first curved portions The second curved portion may have a ring shape.

A lower portion of the second curved portion may make contact with at least one portion between the first curved portions.

The elastic part may be formed of a material having an elastic restoring force, the elastic part having a circular plate shape with an outstanding central portion, and may be provided with a plurality of holes formed along a circumference thereof.

The holes can be shaped as a fan with a portion of the circumference of the elastic part forming an arc thereof.

The intumescent tube may include a plurality of second elastic links that are disposed along a circumferential surface of the vibrating rod.

The second elastic bond can be formed by bending an elongated steel wire. The second elastic link comprises first curved portions, which are both sides of the steel wire folded inwards in a longitudinal direction, and second curved portions, which are both ends of the steel wire folded and joined toward the center through the first portions. curved The second curved portion may have a ring shape.

The lower portion of the second curved portion may make contact with at least one portion between the first curved portions.

The elastic part may be arranged in a position that overlaps a position in which the second curved portion is arranged.

According to one or more embodiments of the present invention, a hydraulic motor includes the hydraulic power unit; accommodation; a rotor that is rotatably supported inside the housing and has a rotor blade arranged in the circumference thereof; and a flange that is arranged inside the housing. The flange comprises a front flange and a rear flange, and a rotor is arranged between the front flange and the rear flange. The rear flange comprises a fixing hole for fixing the hydraulic power unit and an extrusion hole. The extrusion passage is configured to make the rotor blade and an internal hollow of a hydraulic tube included in the hydraulic power unit communicate with each other. The front flange comprises a fluid chamber and a discharge hole, so that a fluid introduced through the rotor blade is bidirectionally discharged.

The extrusion passage may have an angle of inclination with respect to the rotor blade, so that the extruded fluid from the hydraulic tube applies an extrusion force to the rotor blade to thereby rotate the rotor.

The fluid chamber and the discharge hole formed in front of the front flange and a lateral through hole formed in a metal tube can be connected to each other, so that the fluid flows between them.

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The hydraulic motor may also include an operating module that drives the hydraulic power unit, regulates the number of rotations and the rotor torque and comprises a secondary beam as a source of drive energy.

Brief description of the drawings

These and / or other aspects will be evident and appreciated more immediately from the following description of the embodiments, taken together with the attached drawings, of which:

FIG. 1 is a diagram illustrating a contour of a hydraulic motor according to an embodiment of the present invention;

FIG. 2 is a diagram illustrating a structure of a hydraulic power unit included in the hydraulic motor according to the embodiment of the present invention;

FIG. 3 is a diagram illustrating first and second elastic links included in a hydraulic tube and a hydraulic motor amplification device according to the embodiment of the present invention; the FlG. 4 is a diagram illustrating a structure of the hydraulic tube of the hydraulic motor according to the embodiment of the present invention;

FIG. 5 is a diagram illustrating a front position fixing bracket;

FIG. 6 is a diagram illustrating a rear position fixing bracket;

FIG. 7 is a cross-sectional view taken along a line A-A of FIG. 4;

FIG. 8 is a diagram illustrating a structure of a motor amplitude amplification device

hydraulic according to the embodiment of the present invention;

FIG. 9 is a cross-sectional view taken along a line B-B of FIG. 8;

FIG. 10 is a diagram illustrating a structure of a portion of the amplification device of the

amplitude of the hydraulic motor according to the embodiment of the present invention;

FIG. 11 is a diagram illustrating the hydraulic motor according to the embodiment of the present invention;

FIG. 12 is a diagram illustrating a rear flange of the hydraulic motor according to the embodiment of the present

invention;

FIG. 13 is a diagram illustrating a front flange of the hydraulic motor according to the embodiment of the present invention;

FIG. 14 is a diagram illustrating a flow of a hydraulic motor working fluid according to the embodiment of the present invention; Y

FIG. 15 is a diagram illustrating the entire hydraulic flow of a working fluid of the hydraulic motor according to the embodiment of the present invention.

Detailed description

Reference will now be made in detail to embodiments, examples of which are illustrated in the accompanying drawings, in which similar reference numbers refer to similar elements from start to finish. In this sense, the present embodiments may have different forms and should not be construed as limited to the descriptions defined herein. Accordingly, the embodiments are described merely below, with reference to the figures, to explain aspects of the present description. When expressions such as "at least one of" precede a list of elements, they modify the entire list of elements and do not modify the individual elements of the list.

FIG. 1 is a diagram illustrating a hydraulic motor according to an embodiment of the present invention. FIG. 2 is a diagram illustrating a structure of a hydraulic power unit included in the hydraulic motor according to the embodiment of the present invention. FIG. 3 is a diagram illustrating first and second elastic links included in a hydraulic tube and a hydraulic motor amplification device according to the embodiment of the present invention. FIG. 4 is a diagram illustrating a structure of the hydraulic tube of the hydraulic motor according to the embodiment of the present invention. FIG. 5 is a diagram illustrating a front position fixing bracket.

FIG. 6 is a diagram illustrating a rear position fixing bracket. FIG. 7 is a cross-sectional view taken along a line A-A of FIG. 4. FIG. 8 is a diagram illustrating a structure of a device for amplifying the amplitude of the hydraulic motor according to the embodiment of the present invention. FIG. 9 is a cross-sectional view taken along a line B-B of FIG. 8. FIG. 10 is a diagram illustrating a structure of a portion of the amplification device of the amplitude of the hydraulic motor according to the embodiment of the present invention.

In the following a hydraulic power unit 1 of a hydraulic motor according to the present invention will be described.

The hydraulic power unit 1 according to the present invention includes a hydraulic tube 100 that has a hollow portion that has an open front end and is filled with a fluid, an amplitude amplification device 200 that is arranged on the rear side of the tube hydraulic 100, and an oscillator 300 which is arranged on the rear side of the amplification amplifier device 200, so that it deforms and increases and reduces a pressure inside the hydraulic tube 100.

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The hydraulic tube 100 extends in a longitudinal direction. The hydraulic tube 100 includes a metal tube 112 formed on the outside thereof and an elastic tube 114 formed on the inside thereof, and is configured in the form of a double tube having an external hollow 116 and an internal hollow 118.

The amplitude amplification device 200 includes a plurality of covers 212 having a recess formed therein, a plurality of intumescent tubes 214 that are disposed, respectively, inside the covers 212 and have a cylindrical recess therein , a plurality of vibrating rods 230 that are disposed, respectively, in the gaps of the intumescent tubes 214, and a plurality of elastic parts 220 that are disposed, respectively, in the gaps of the intumescent tubes 214, intersect with the gaps, and are arranged between the vibrating rods 230.

The oscillator 300 is configured to move bidirectionally and change the pressure of the fluid inside the hydraulic tube 100 by applying a deformation force to the vibrating rod 230 according to its deformation, so that the fluid inside the hydraulic tube 100 is extruded to the outside or flow into the hydraulic tube 100.

In the following the hydraulic tube 100 will be described.

The hydraulic tube 100 is a tube-like structure that has a gap that extends in a longitudinal direction and is filled with a working fluid.

Specifically, the hydraulic tube 100 is formed in the form of a double tube that includes the metal tube 112 formed on the outside thereof and the elastic tube 114 formed on the inside thereof and has the outer hollow 116 and the inner hollow 118. It is that is, the elastic tube 114 is disposed inside the metal tube 112 and, therefore, the hydraulic tube 100 has a double tube structure in which the internal hollow 118 is formed inside the elastic tube 114, the hollow outer 116 is formed between the elastic tube 114 and the metallic tube 112, and the inner hole 118 is formed inside the outer hole 116.

The metal tube 112 is formed of a metal material, and the elastic tube 114 is formed of a metal or an elastic material. The elastic tube 114 may be formed of a material having an elastic restoring force, for example, a metal, plastic or rubber.

In the following the amplification amplification device 200 will be described.

The amplitude amplification device 200 is disposed on the rear side of the hydraulic tube 100. The amplitude amplification device 200 includes the plurality of covers 212 having a recess formed therein, the plurality of intumescent tubes 214 that are disposed, respectively, within the covers 212 and have a cylindrical hollow therein, the plurality of vibrating rods 230 which are disposed, respectively, in the hollows of the intumescent tubes 214, and the plurality of elastic parts 220 which are arranged, respectively, in the gaps of the intumescent tubes 214, intersect with the gaps, and are arranged between the vibrating rods 230.

The plurality of covers 212 are configured as a housing of amplitude amplification device 200 and can have a cylindrical shape having a gap formed therein.

The intumescent tube 214 is disposed inside the cover 212, and may have a cylindrical shape having a recess formed therein similar to the cover 212.

The intumescent tube 214 may have a structure in which a plurality of second elastic links 260 are arranged in the form of a cylinder. That is, the plurality of second elastic links 260 extending in a longitudinal direction are arranged in a circumferential direction, so that they form a cylindrical tube, thereby completing the intumescent tube 214. Next, the detail will be described in detail. second elastic link 260.

The vibrating rod 230 is arranged inside the intumescent tube 214. The vibrating rod 230 is a member that has a cylindrical beam configuration and is disposed inside the intumescent tube 214. At least one vibrating rod 230 is disposed in the inside of the intumescent tube 214.

On the other hand, a reel or plunger may be provided at the front end of the vibrating rod 230, but the present invention is not limited thereto.

As illustrated in FIG. 7, the various elastic parts 220 are arranged inside the intumescent tube 214, and each of the elastic parts 220 has a circular plate for before deformation and crosses the hollow of the intumescent tube 214. The elastic part 220 is arranged in the interior of the intumescent tube 214, so as to make contact with the vibrating rod 230. The elastic piece 220 includes a plurality of holes 222 formed along a circumference thereof. On the other hand, as illustrated in FIG. 9, the holes 222 are arranged radially, and may be shaped as a fan, an arc forming an internal side of the gap.

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In addition, the elastic piece 220 is formed of a material having an elastic restoring force, and it can be a Belleville spring that is formed, for example, of a metal. On the other hand, for example, the elastic piece 220 may have a shape with an outstanding central portion. In this way, the elastic part 220 is deformed according to an increase or a reduction in the external force or the presence or absence of an external force. For example, the elastic piece 220 can be deformed by creating a flat shape before deformation creating a curved shape according to the application of an external force. The elastic piece 220 is formed of an elastic material and, therefore, has a restoring force according to its deformation.

On the other hand, the elastic piece 220 is arranged to make contact with the vibrating rod 230 and the head 310 of the oscillator and to receive a compression force of the head 310 of the oscillator. Consequently, the elastic piece 220 maintains its flat shape in an initial state when an external force is not applied thereto. Subsequently, when an external force is applied to the elastic part 220 from the oscillator 300, the elastic part 220 is deformed creating a curved shape according to its restoring force.

In the following, oscillator 300 will be described.

The oscillator 300 is arranged at the rear end of the hydraulic power unit 1, and can be deformed in a longitudinal direction of the hydraulic power unit 1. The oscillator 300 is constituted by a piezoelectric element, and is preferably formed as a battery that includes piezoelectric elements. On the other hand, the head 310 of the oscillator that transmits a force according to the deformation of the oscillator 300 may be arranged at a tip of the oscillator 300. At this time, the head 310 of the oscillator is partially inserted into the intumescent tube 214, so that make contact with the elastic part 220. Therefore, the elastic part 220 may be arranged between the head 310 of the oscillator and the vibrating rod 230 to thereby receive a compression force both from the head 310 of the oscillator and from the vibrating rod 230. In addition, a connection device may have been arranged in an operating module to excite the oscillator 300.

On the other hand, the hydraulic motor 2 can also include an operating module (not shown) that drives the hydraulic power unit 1 by applying an operating signal to the oscillator 300, regulates the number of rotations and a rotor torque and includes a drum secondary as an energy source of drive.

The hydraulic motor 2 can also include a housing 414 of the oscillator, so that the oscillator 300 is surrounded. The housing 414 of the oscillator can be filled with an insulating oil, so that the temperature of the oscillator 300 is increased which increases due to to the operation of the oscillator 300. The housing 414 of the oscillator can include an open hole 416 through which the insulating oil flows inside the housing 414 of the oscillator and a predetermined tube, so that the insulating oil moves. The tube can communicate with a predetermined refrigeration unit. The cooling unit includes a predetermined tube structure and a cooling device, and prevents the temperature of the oscillator 300 from rising excessively, thereby preventing a reduction in the operational efficiency of the hydraulic power unit 1 and an engine. Hydraulic 2 according to the present invention.

Preferably, the oscillator 300 is deformed when electricity is applied thereto by an inverse piezoelectric effect, and is deformed in an inward direction of the hollow portion of the hydraulic tube 100 and in an opposite direction to it.

In the following, more detailed configurations and a connection structure of components constituting the hydraulic power unit 1 will be described.

Preferably, the hydraulic tube 100 includes supports 180 and 181 for fixing the position, which are arranged inside the metal tube 112 and make contact, respectively, with the front side and the rear side of the elastic tube 114, and a connection device 130 which is disposed at a front end of the metal tube 112 and at the same time in front of the front position fixing support 181 that makes contact with the front side of the elastic tube 114.

The connection device 130 may be a member that is arranged to fix the hydraulic power unit 1 to the hydraulic motor 2 when the hydraulic motor 2 is configured using the hydraulic energy unit 1. For example, the connection device 130 may have a tube shape that has a male screw portion formed on the outside thereof and that has an opening 132 therein.

At least a portion of the connection device 130 seals the outer hole 116, and the opening 132 can be formed in at least one portion of the connection device 130, so that the inner hole 118 communicates with the outside.

That is, as illustrated in FIG. 2, the connection device 130 is configured such that a portion thereof extends in a circumferential direction. The extended portion seals a leading end of the outer recess 116 formed between the metal tube 112 and the elastic tube 114, so that communication between the outer recess 116 and the inner recess 118 is blocked. In addition, the opening 132 is formed in a central portion of

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connection device 130, so that the internal gap 118 formed by the elastic tube 114 communicates with the outside.

On the other hand, a side through hole 160 is formed on one side of the metal tube 112, so that the outer recess 116 communicates with the outside. Next, the movement of a fluid through the lateral through hole 160 will be described.

The position fixing brackets 180 and 181 are arranged, respectively, on the front side and the rear side of the hydraulic tube 100. In addition, the position fixing brackets 180 and 181 are arranged inside the metal tube. 112, so that they make contact, respectively, with the front and rear sides of the elastic tube 114. That is, the elastic tube 114 is disposed between the supports 180 and 181 for fixing the position and the connecting device 130, and the movement of a fluid between the external recess 116 and the internal recess 118 can be blocked by means of the position fixing brackets 180 and 181 and the connection device 130.

The position fixing support 180 is arranged to make contact through a sealing ring 150 with at least one vibrating rod 230, which is included in the amplitude amplification device 200. The position fixing support 180 can transmit a deformation force according to the vibrating rod 230 to a fluid inside the hydraulic tube 100 through the elastic link 170.

The elastic tube 114 is formed as a corrugated tube having a plurality of corrugations that extend in a longitudinal direction and, therefore, a cross-section of the elastic tube 114 in a horizontal direction can have such a shape with concave portions and convex portions alternating For example, as illustrated in FIG. 8, the cross section of the elastic tube 114 may have a star shape in which a plurality of convex portions and a plurality of concave portions are formed in a circumferential direction.

The elastic link 170 is arranged in the concave portion of the elastic tube 114.

The elastic link 170 is formed of a material that has a stiffness and elasticity similar to those of an elongated steel wire.

The elastic link 170 is formed by bending a straight elongated steel wire. For example, elastic link 170 is formed by bending both ends of the steel wire in a longitudinal direction, as illustrated in FIG. 3, and then bending both ends joined towards the center and, therefore, the elastic link 170 has a ring shape. Therefore, the elastic link 170 may include first curved portions formed at both ends and the second curved portions formed to make contact with each other on the inner side. On the other hand, an elongated straight portion is formed between the curved portions.

The second curved portion is folded in the form of a ring, and may preferably be configured so that a lower portion of the ring makes contact with the straight portion below the ring. That is, the lower portion of the second curved portion can make contact with at least one portion between the first curved portions.

Therefore, when both ends of the elastic link 170 are pressed in a state in which the upward deformation of the elastic link 170 is limited, the elastic link 170 can be deformed so that the second curved portions join together. they have a ring shape on the inner side and press the straight portion below the second curved portions, so that they bend down.

The elastic link 170 is a member that has a configuration and arrangement as presented above, and it should be understood that the elastic link 170 is not a member for connecting other members.

On the other hand, the predetermined supports 180 and 181 for fixing the position can be provided so as to properly position the elastic link 170 inside the hydraulic tube. The position fixing brackets 180 and 181 are provided at both ends of the elastic link 170 and the elastic tube 114. As illustrated in FIG. 4, a predetermined height of step formed on the inner surface of the connection device 130 may function as the position fixing support 181.

That is, the elastic link 170 is arranged in front of the vibrating rod 230, so that it is arranged between the connection device 130 and the position fixing brackets 180 and 181. Therefore, as described above, when a deformation force is applied to the elastic link 170 by means of the vibrating rod 230, the elastic link 170 is deformed in a direction of an internal diameter and, therefore, the link Elastic 170 presses the elastic tube 114, thereby changing a pressure of a fluid inside the elastic tube 114.

The elastic link 170 according to the present embodiment can be more stably fixed between the connection device 130 and the position fixing brackets 180 and 181, and the second curved portions bent in the form of a ring make contact with the straight portion arranged below the second curved portions. Therefore, the elastic link 170 can deform more stably in the direction of the internal diameter due to the

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deformation force in both lateral directions. Consequently, the fluid inside the hydraulic tube 100 can be extruded or introduced more evenly.

That is, when the elastic link 170 is compressed by means of the vibrating rod 230 in a longitudinal direction, the second curved portions are pressed in against each other and, therefore, the second curved portions press the straight portion, which is arranged below the second curved portions, down. therefore, when the vibrating rod 230 presses the elastic link 170, the straight portion is deformed upwards and pressed down due to the pressure of the second curved portions to be deformed in this way. In addition, the vibrating rod 230 presses the elastic link 170, so that the elastic tube 114 is deformed inwardly.

FIGURES 9 and 10 illustrate amplitude amplification device 200.

The amplification amplifier device 200 according to the present embodiment includes the plurality of covers 212 having a recess formed therein, the plurality of second elastic links 260 that are disposed, respectively, in the recesses of the decks 212, so that they constitute a tube, the plurality of vibrating rods 230 that are arranged in the tube constituted by the elastic links, and the plurality of elastic parts 220 that are disposed, respectively, in the hollows of the intumescent tubes 214, of way they intersect with the gaps.

The cover 212, the vibrating rod 230 and the elastic piece 220 are as described above. Here, a detailed configuration of the intumescent tube 214 will be described.

The second elastic link 260 constituting the intumescent tube 214 has a structure similar to the elastic link 170 that has been described with respect to the hydraulic tube 100. That is, the second elastic link 260 is formed by bending an elongated steel wire. For example, elastic link 170 is formed by bending both ends of the steel wire in a longitudinal direction, as illustrated in FIG. 3, and then bending both ends joined to each other towards the center and, therefore, the second elastic link 260 is ring-shaped. Therefore, the elastic link 170 may include first curved portions formed at both ends and second curved portions formed to make contact with each other on the inner side. On the other hand, an elongated straight portion is formed between the curved portions.

The second curved portion is folded in the form of a ring, and may preferably be configured so that a lower portion of the ring makes contact with the straight portion below the ring. Therefore, when both ends of the second elastic link 260 are pressed in a state in which the upward deformation of the second elastic link 260 is limited, the second elastic link 260 can be deformed so that the second elastic ties together. curved portions that have a ring shape on the inner side and press the straight portion below the second curved portions so that they are bent down.

On the other hand, the elastic piece 220 may be arranged to cover the second curved portions. That is, as illustrated in FIG. 9, the elastic piece 220 may be arranged in a portion in which the second curved portions on the inner side are joined together. Therefore, a deformation due to the pressure on the elastic piece 220 which is arranged in a position in which the second curved portions are arranged can be concentrated.

The second elastic links 260 are arranged in a circumferential direction so that they constitute a tube. That is, the plurality of second elastic links 260 are arranged centered around the vibrating rod 230 in the circumferential direction of the vibrating rod 230 and, therefore, the plurality of elastic links 260 may form a gap in a direction of a internal diameter.

At this time, to properly fix the second elastic link 260, the cover 212 may have a predetermined step height, but the present invention is not limited thereto.

As described above, when the second elastic link 220 receives a deformation force in a direction of an internal diameter by means of a vibratory force of the oscillator 300, the second elastic link 220 can be deformed in the direction of the internal diameter to press , thus, the elastic part 114 and, therefore, the elastic part 114 can be deformed.

The second elastic link 260 according to the present embodiment may be more stably fixed inside the cover 212, and the second curved portions bent into a ring make contact with the straight portion disposed below the second curved portions. Therefore, the second elastic link 260 can be deformed more stably in the direction of the internal diameter due to the deformation force in both lateral directions. Consequently, the second elastic link 260 can be deformed more stably, and the hydraulic power unit can operate reliably.

In the following an operation of the hydraulic power unit 1 will be described.

First, an operation of the amplitude amplification device 200 will be described below.

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As illustrated in FIG. 7, when an external force is applied to the elastic part 220 from the oscillator 300, the elastic part 220 is deformed creating a curved shape with an outstanding central portion. The elastic part 220 can be repeatedly deformed and restored to the original shape according to the external force applied from the oscillator 300 arranged below the hydraulic power unit 1.

For example, when the oscillator 300 is deformed, the intumescent tube 214 is deformed inwards by a deformation force transmitted from the head 310 of the oscillator to thereby press the elastic piece 220. Therefore, the portion is deformed center of the elastic piece 220 creating such a curved shape with an outstanding central portion.

The vibration of the oscillator 300 and the deformation of the elastic part 220 take place in a longitudinal direction of the hydraulic power unit 1. Therefore, the capacity of the elastic tube 114 inside the hydraulic tube 100 is changed, thereby extruding a fluid that fills the inner hollow 118 in the elastic tube 114 outside through the opening 132 formed in the connection device 130.

On the other hand, the extruded fluid passes through a predetermined path and a fluid chamber. Then, the fluid changes its direction to flow into the outer recess 116 mentioned above, which will be described below.

On the other hand, the elastic piece 220 receives a compression force from the vibrating rod 230 and is disposed between the vibrating rods 230 and, therefore, the elastic piece 220 maintains its flat shape in an initial state in which it is not applied an external force to it from the oscillator 300.

On the other hand, as described above, not only can an elastic piece 220 be stacked but also a plurality of elastic parts 220 on top of each other.

Therefore, when looking from a longitudinal direction of the hydraulic power unit 1, a hole formed in the elastic part 220 may be partially or completely covered by another of the elastic parts 220. At this time, as illustrated in FIG . 6, the elastic pieces 220 may be stacked in such a way that the curved surfaces thereof are curved in the same direction or in a direction in which they are mutually oriented, but the present invention is not limited thereto.

When the hydraulic power unit 1 according to the present invention and all the members that are internally or externally connected thereto are filled with a fluid and sealed, the fluid in the sealed space can be circulated in a desired direction.

To increase an amount and force of the fluid that is extruded through the opening 132, it is required that an amount of deformation of the oscillator 300 be increased. A method can be classified to increase the amount of deformation of the oscillator 300 in a process for increase a voltage of electric energy to be applied and in a process to mechanically stack a plurality of piezoelectric elements used as oscillator 300.

Furthermore, as described above, the amplification amplification device 200 is disposed between the oscillator 300 and the hydraulic tube 100 and, therefore, an amount of fluid that is extruded and introduced through a passage can be increased. 434 of extrusion and an amount of fluid that is extruded and introduced through an inlet, thereby further increasing the output of the hydraulic power unit 1.

In the following the hydraulic motor 2 which includes the hydraulic power unit 1 according to the present invention will be described.

FIG. 11 is a diagram illustrating the hydraulic motor 2 that includes the hydraulic power unit 1 according to the embodiment of the present invention. FIG. 12 is a diagram illustrating a rear flange 430 of the hydraulic motor 2 according to the embodiment of the present invention. FIG. 13 is a diagram illustrating a front flange 440 of the hydraulic motor 2 according to the embodiment of the present invention. FIG. 14 is a diagram illustrating a flow of a working fluid of the hydraulic motor 2 according to the embodiment of the present invention. FIG. 15 is a diagram illustrating a state in which all the hydraulic force of a working fluid is balanced.

The hydraulic motor 2 according to the present invention includes the hydraulic power unit 1, a housing, a rotor 420 which is rotatably supported in the housing and is provided with a rotor blade 422 in the circumference thereof, a chamber 450 of fluid that is arranged inside the housing and a flange.

The flange includes the front flange 440 and the rear flange 430, and a rotor is arranged between the front flange 440 and the rear flange 430.

The rear flange 430 includes a fixing hole 432 for fixing the hydraulic power unit 1 and an extrusion passage 434. The extrusion passage 434 is formed so that the rotor blade 422 formed in the rotor and the internal hollow 118 of the hydraulic tube 100 included in the hydraulic power unit 1 communicate with each other.

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The front flange 440 includes a discharge hole 442 for discharging a fluid that is introduced through the rotor blade 422 and the fluid chamber 450 disposed in front of the front flange 440.

The housing is a member that constitutes an external form of the hydraulic motor 2 according to the present embodiment of the present invention. The rotor 420 and a plurality of the hydraulic power units 1 may be arranged inside the housing.

The rotor 420 is a member that is rotatably disposed inside the housing. The rotor 420 includes several rotor blades 422 that protrude in a direction of the radius of the rotor 420 with respect to a rotation axis of the rotor 420. On the other hand, the rotor 420 may have a predetermined configuration, for example, of a helical gear. double default.

The output shaft 402 may extend from the rotation axis of the rotor 420 in a flange or may be integrally formed with the rotation axis of the rotor 420. The output shaft 402 may be installed so that it protrudes outwardly from the housing .

On the other hand, the housing can be divided into an upper housing 410 and a lower housing 412. A sealing member is arranged between the upper housing 410 and the lower housing 412, so as to prevent fluid leakage.

FIGURES 12 and 13 illustrate a flange. With reference to FIGURES 12 and 13, the flange forms a frame of the hydraulic motor 2 and can maintain the hydraulic power unit 1 in a constant position.

The flange includes the front flange 440 and the rear flange 430. The front flange 440 and the rear flange 430 are arranged inside the housing, and the rotor 420 is disposed between the front flange 440 and the rear flange 430.

The front flange 440 and the rear flange 430 are shaped as a ring. That is, as illustrated in FIGURES 12 and 13, the front flange 440 and the rear flange 430 are formed in the form of a ring in which a gap is formed.

The hydraulic power unit 1 is fixed to the rear flange 430. The rear flange 430 includes the predetermined fixing hole 432. A female screw portion is formed in the fixing hole 432, so that it is coupled with a male screw portion formed in the connection device 130. At this time, a plurality of fixing holes 432 may be formed, and the hydraulic power unit 1 may be fixed to the fixing hole 432.

The extrusion passage 434 is formed in the rear flange 430, and the extrusion passage 434 is connected to the fixing hole 432. The extrusion passage 434 is disposed between the rotor 420 and the hydraulic tube 100. An extruded fluid from the inner recess 118 inside the hydraulic tube 100 can be transmitted to the rotor 420 through the extrusion passage 434. Preferably, the extrusion passage 434 forms an angled angle with respect to the rotor blade 422, so that the extruded fluid from the hydraulic tube 100 applies an extrusion force to the rotor blade 422 to thereby rotate, the rotor 420. That is, the extruded fluid through the hydraulic tube 100 applies an extrusion force to the rotor blade 422 to thereby rotate the rotor 420, thereby generating energy. Step 438 of the injection chamber is formed in the rear flange 430. Step 438 of the injection chamber is connected to the injection step 436. A fluid transmitted from the rotor 420 can be injected into the side through hole 160 through the passage 438 of the injection chamber and the injection passage 436. A fluid extruded from the extrusion passage 434 can rotate the rotor 420. Thereafter, the fluid passes through the discharge hole 442 and is transmitted to the fluid chamber 450. Subsequently, the fluid changes its direction and passes through the discharge hole 444 and the injection passage 436. And a fluid can be injected into the side through hole 160 connected to the passage 438 of the injection chamber and the rear fluid chamber 470.

The discharge hole 442 is formed in the front flange 440 and the fluid chamber 450 is formed in front of the front flange 440. The extruded fluid through the extrusion passage 434 applies an extrusion force to the rotor blade 422 to thereby rotating the rotor 420. Then, the fluid passes through the fluid chamber 450 and changes its direction to rotate, again, the rotating rotor 420. Similar to step 434 of extrusion, the discharge hole 442 may have an angle of inclination.

At this time, the discharge hole 442 formed in the front flange 440 and the lateral through hole 160 formed in the metal tube 112 of the hydraulic tube 100 are connected to each other through the fluid chamber 450 and, therefore, are it forms a flow path along which fluid flows. That is, the discharge hole 442 formed in the front flange 440 is configured in such a way that an extrusion fluid, which flows through the lateral through hole 160 formed in the metal tube 112 to thereby rotate the rotor 420, applies rotational power to the rotating rotor 420 through the fluid chamber 450 and a fluid movement path, so that it flows into the outer recess 116 through the side through hole 160. Therefore, the extruded fluid the rotor 420 can be rotated from the inner hole 118 and then flow into the outer hole 116. Therefore, the fluid can be extruded into or out of the hydraulic tube 100, and can be carried

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perform the extrusion and the introduction of the fluid with respect to the hydraulic tube 100 at the same time, thereby rotating the rotor 420 in one direction. On the other hand, the predetermined fluid chamber 450 having the working fluid accumulated therein may be included in the fluid movement path of the outer recess 116.

Preferably, hydraulic energy units 1 are installed in an even number inside the hydraulic motor 2, so that they are associated with each other and, therefore, the hydraulic energy units 1 can replenish a balancing force.

That is, as illustrated in FIG. 14, a first hydraulic energy unit 1A and a second hydraulic energy unit 1 B may be arranged in a hydraulic motor 2. At this time, each hydraulic energy unit 1 may be arranged in a circumferential direction of the rotor 420. A fluid Extruded from the first unit 1A of hydraulic energy can rotate the rotor 420, it can be discharged to the fluid chamber 450 through the discharge hole 442, it can change its direction through the fluid chamber 450, it can make rotating another rotor through another discharge hole 444, and then it can be introduced into the first hydraulic power unit 1 A through the side through hole 160, step 438 of the injection chamber and step 436 of injection.

The operation mentioned above can be repeated in reverse.

In addition, a complementary operation between fluids between the first hydraulic power unit 1A and the second hydraulic power unit 1 B is carried out through the fluid chamber 450 and the passage 438 of the injection chamber, and can be maintained constant the rotational power of the rotor during such complementary operation between fluids.

As illustrated in FIG. 13, a force applied to a fluid can be constantly balanced by a complementary operation, so that an intense force of direct transmission of the oscillator 300 of the hydraulic power pair numbering units 1A and a weak force of reverse transmission are combined with each other of the oscillator 300 of the hydraulic power pair numbering unit 1 B by means of a direct transmission fluid that is extruded from the fluid chamber 450 and the passage 438 of the injection chamber.

On the other hand, a predetermined accumulator 460 can be provided in a fluid movement path between the discharge hole 442 and the lateral through hole 160. The accumulator 460 regulates the flow rate of a fluid. The accumulator 460 may be configured to replenish a fluid when the fluid flow rate changes due to the temperature, pressure or loss of the fluid or to properly regulate the fluid flow rate.

The hydraulic power unit 1 extrudes and introduces a fluid in a tangential direction of a rotor surface 420 towards a plurality of the rotor blades 422 that are arranged in the rotor 420.

Preferably, the hydraulic motor 2 may also include an operating module 500 that drives the hydraulic power unit 1, regulates the number of rotations and the torque of the rotor and includes a secondary drum as an energy source of drive.

In the hydraulic motor 2 according to the present invention, the ceramic oscillator 300 which is included in the hydraulic energy unit 1 constituting the hydraulic motor 2 mainly uses a reverse piezoelectric effect. Depending on the inverse piezoelectric effect, there is an intense displacement and force in the ceramic oscillator 300 according to an excitation voltage, an excitation frequency and a firmness (stiffness) of the ceramic oscillator 300. Since a working fluid has to being extruded, it presses the rotor blade 422 intensely due to displacement and intense force, a torque can be greatly increased to rotate the rotor 420. In particular, a flow of the working fluid can be arbitrarily changed by regulating the application time of a signal of excitement.

On the other hand, the hydraulic motor 2 according to the present invention does not require additional energy or fuel except the energy of a secondary baton included in a drive module, which is used to generate a signal to be applied to the ceramic oscillator 300 included in the hydraulic power unit 1. Consequently, the hydraulic motor 2 can be driven continuously in a useful life span of the ceramic oscillator 300 and a secondary batter to supply energy to apply an excitation signal to the ceramic oscillator 300 without supplying additional energy or fuel.

In addition, the hydraulic motor 2 according to the present invention includes an amplitude amplification device and, therefore, an amplitude of the vibration according to the oscillator 300 can be further amplified. Consequently, the hydraulic motor 2 can have a greater power .

As described above, according to one or more of the previous embodiments of the present invention, in a hydraulic motor, a reverse piezoelectric effect is mainly used in a ceramic oscillator included in a hydraulic power unit of the hydraulic motor. Depending on the inverse piezoelectric effect, there is a displacement and an intense force in the ceramic oscillator according to an excitation voltage, a frequency of

excitation, and a firmness (rigidity) of the ceramic oscillator. Since a working fluid that has to be extruded intensely presses a rotor blade due to displacement and intense force, the torque can be increased to rotate a rotor. In particular, the flow of the working fluid can be arbitrarily changed by regulating the application time of an excitation signal.

5 On the other hand, the hydraulic motor according to the present invention does not require additional power or fuel except the energy of a secondary baton included in a drive module, which is used to generate a signal to be applied to the ceramic oscillator included in the hydraulic power unit. Consequently, the hydraulic motor can be continuously operated in a useful life span of the ceramic oscillator and a secondary batter to supply energy to apply an excitation signal to the ceramic oscillator without supplying 10 additional energy or fuel.

Furthermore, the hydraulic motor according to the present invention includes an amplitude amplification device and, therefore, a vibrational amplitude according to an oscillator can be further amplified. Consequently, the hydraulic motor may have greater power.

It should be understood that the exemplary embodiments described herein should only be considered in a descriptive sense and not for limiting purposes. Descriptions of the aspects or features in each embodiment should normally be considered as available for other similar aspects or features in other embodiments.

Although one or more embodiments of the present invention have been described with reference to the figures, persons with a normal level of mastery of the technique will understand that various changes in form and detail can be made in the same without departing from the scope of the present invention as defined in the following claims.

Claims (16)

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A hydraulic motor comprising: a hydraulic unit (1) comprising a hydraulic tube (100) comprising a hollow portion that has an open front end and that is filled with a fluid, an amplitude amplifying device (200) that is arranged on the rear side of the hydraulic tube (100), an oscillator (300) that is arranged on the rear side of the amplification amplifier device (200), so that it deforms and increases and decreases a pressure inside the tube hydraulic (l00) and an oscillator head (310) that is fixed to a front end of the oscillator (300), wherein the hydraulic tube (100) extends in a longitudinal direction, comprises a metal tube (112) formed on the outside thereof and an elastic tube (114) formed on the inside thereof, and is configured in the form of a double tube having an external hollow (116) and an internal hollow (118), in which the amplitude amplification device (200) comprises a cover (212) having a hollow formed therein, an intumescent tube ( 214) which is arranged inside the cover (212) and has a cylindrical recess therein, a plurality of vibrating rods (230) that are arranged in the hollow of the intumescent tube (214), and an elastic piece (220 ) which is arranged in the hollow of the intumescent tube (214), intersects with the hollow, and is arranged between the plurality of vibrating rods (230), in which the oscillator (300) moves bidirectionally and changes a pressure inside the hydraulic tube (100) by applying a deformation force to the vibrating rod (230) according to its deformation, so that a fluid inside the tube Hydraulic (100) is extruded outward or flows into the hydraulic tube (100). 2. The hydraulic motor (2) of claim 1, wherein the oscillator (300) is deformed in an inward direction of the hollow portion of the hydraulic tube (100) and in an opposite direction when electricity is applied thereto. by a reverse piezoelectric effect. 3. The hydraulic motor (2) of claim 1, wherein the hydraulic tube (100) comprises a support (181) for fixing the front position and a support (180) for fixing the rear position which is arranged in the interior of the metal tube (112) and makes contact with a front side and a rear side of the elastic tube (114), and a connection device (130) which is arranged at a front end of the metal tube (112) and is arranged so that it makes contact with the front side of the support (181) for fixing the front position of the elastic tube (114), wherein the rear position fixing bracket (180) is arranged so that it makes contact by means of a sealing ring (150) with at least one vibrating rod (230) included in the amplification device (200) of The amplitude, wherein at least a portion of the connection device (130) seals the outer hole (116), in which an opening is formed in at least one portion of the connection device (130), to cause them to communicate with each other internal hollow (118) and the exterior, and in which a lateral through hole (160) is formed on one side of the metal tube (112), to cause the external hollow (116) and the exterior to communicate with each other. 4. The hydraulic motor (2) of claim 3, wherein the hydraulic tube (100) comprises a plurality of first elastic links (170), in which the elastic tube (114) is formed as a corrugated tube having a plurality of corrugations extending in a longitudinal direction, wherein the first elastic link (170) is arranged so that it makes contact with a concave portion of the corrugation and extends in a longitudinal direction along the corrugation, and in which one end of the first elastic link (170 ) makes contact with the connection device (130) through the support (181) for fixing the front position, the other end thereof makes contact with the vibrating rod (230) through the support (180) for fixing the rear position, and the elastic tube (114) is pressed in a horizontal direction according to a deformation force of the vibrating rod (230). 5. The hydraulic motor (2) of claim 4, wherein the first elastic link (170) is formed by bending an elongated steel wire, in which the first elastic link (170) comprises first curved portions, which are both sides of the steel wire bent inward in a longitudinal direction, and second curved portions, which are both ends of the steel wire folded and joined toward the center through the first curved portions, and in which the second curved portion has a ring shape. 6. The hydraulic motor (2) of claim 5, wherein a lower portion of the second curved portion makes contact with at least one portion between the first curved portions. 7. The hydraulic motor (2) of claim 1, wherein the elastic part (220) is formed of a material having an elastic restoring force, the elastic part (220) being in the form of a circular plate with a 5 10 fifteen twenty 25 30 35 40 central portion protruding, and is provided with a plurality of holes (222) formed along a circumference thereof. 8. The hydraulic motor (2) of claim 7, wherein the holes (222) are shaped as a fan, forming an arc portion of the circumference of the elastic part (220). 9. The hydraulic motor (2) of claim 8, wherein the intumescent tube (214) comprises a plurality of second elastic links (260) that are disposed along a circumferential surface of the vibrating rod (230). 10. The hydraulic motor (2) of claim 9, wherein the second elastic link (260) is formed by bending an elongated steel wire, in which the second elastic link (260) comprises first curved portions, which are both sides of the steel wire bent inward in a longitudinal direction, and second curved portions, which are both ends of the steel wire folded and gathered toward the center through the first curved portions, and in which the second curved portion has a ring shape. 11. The hydraulic motor (2) of claim 10, wherein a lower portion of the second curved portion makes contact with at least one portion between the first curved portions. 12. The hydraulic motor (2) of claim 11, wherein the elastic part (220) is arranged in a position that overlaps a position in which the second curved portion is arranged. 13. A hydraulic motor (2) according to any one of the preceding claims, further comprising a housing: a rotor (420) which is rotatably supported inside the housing and has a rotor blade (422) arranged in the circumference thereof; Y a flange that is arranged inside the housing, wherein the flange comprises a front flange (440) and a rear flange (430), and the rotor (420) is disposed between the front flange (440) and the rear flange (430), wherein the rear flange (430) comprises a fixing hole (432) for fixing the hydraulic power unit (1) and an extrusion passage (434), wherein the extrusion passage (434) is configured to cause the rotor rotor blade (422) to communicate with each other (420) and an internal recess (118) of a hydraulic tube (100) included in the unit ( 1) hydraulic energy, and wherein the front flange (440) comprises a fluid chamber (450) and a discharge hole (442), so that a fluid introduced through the rotor blade (422) is bidirectionally discharged. 14. The hydraulic motor (2) of claim 13, wherein the extrusion passage (434) has an angle of inclination with respect to the rotor blade (422), such that the fluid extruded from the hydraulic tube ( 100) apply an extrusion force to the rotor blade (422) to thereby rotate the rotor. 15. The hydraulic motor (2) of claim 14, wherein the fluid chamber (450) and the discharge hole (442) formed in the front of the front flange (440) and a side through hole (160 ) formed in a metal tube (112) of the hydraulic tube (100) are connected to each other, so that the fluid flows between them. 16. The hydraulic motor (2) of claim 13, further comprising an operating module (500) that drives the hydraulic power unit (1), regulates the number of rotations and the rotor torque (420), and It comprises a secondary baton as a source of drive energy.