HYDRAULIC ENGINE WITH HYDRAULIC PUMP

Abstract

A hydraulic engine with hydraulic pumps that moves the oil filled in the body thereof through the hydraulic pumps to allow rotational load bodies to be driven by means of the reciprocation of pistons, thereby obtaining a rotational force required for driving, includes: a power supply adapted to supply power to a driving part and to charge the power generated from rotational load bodies through the driving of a power driving part; the driving part driven through the power supplied from the power supply; a pair of hydraulic pumps adapted to pump a fluid through the rotation of the driving part; and the power driving part adapted to generate a driving force through the reciprocation of a driving piston.

Claims

1. A hydraulic engine comprising: a power supply (10) adapted to supply power to a driving part (20) and to charge the power generated from rotational load bodies (49) through the driving of a power driving part (40); the driving part (20) driven through the power supplied from the power supply (10) and having a hydraulic motor (22) adapted to drive a pair of hydraulic pumps (30) and a transmission (21) adapted to change the number of rotations of the hydraulic motor (22) so that the transmission 21 rotates with the number of rotations higher or lower than the driving part (20) to allow the hydraulic motor (22) to rotate at a higher speed or to allow the hydraulic motor (22) to rotate at a lower speed so as to obtain a large torque (output); the pair of hydraulic pumps (30) adapted to pump a fluid through the rotation of the hydraulic motor (22) of the driving part (20) and having connection hoses (31) connected to the power driving part (40); the power driving part (40) having a casing (41) having a given size, both ends of the casing (41) being connected to the connection hoses (31) so that the fluid supplied from the pair of hydraulic pumps (30) is supplied to the interior of the casing (41), a first piston (42) located on one side of the casing (41) in such a manner as to be reciprocated by a given distance by means of the driving of one side hydraulic pump (30), a second piston (43) located on the other side of the casing (41) in such a manner as to be reciprocated by a given distance by means of the driving of the other side hydraulic pump (30), a driving piston (45) located on the intermediate position of the casing (41) between the first piston (42) and the second piston (43) in such a manner as to be reciprocated by a given distance by means of the reciprocation of the first piston (42) and the second piston (43), a first connecting rod (46) disposed on one surface of the driving piston (45) in such a manner as to be linearly reciprocated by means of the reciprocation of the driving piston (45), a second connecting rod disposed on the other surface of the driving piston (45) in such a manner as to be linearly reciprocated by means of the reciprocation of the driving piston (45), crankshafts (48) rotatably mounted on the first connecting rod (46) and the second connecting rod (47) in such a manner as to convert the linear motions of the first connecting rod (46) and the second connecting rod (47) into the rotational motions, and the rotational load bodies (49) rotating by means of the rotations of the crankshafts (48) to generate power therefrom; and shock absorbing members (50) disposed on both ends of the casing (41) to prevent the connection hoses (31) from being damaged or broken and to absorb the shocks caused upon the contacts of the first piston (42) and the second piston (43) with both ends of the casing (41).

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The above and other objects, features and advantages of the present invention will be apparent from the following detailed description of the preferred embodiments of the invention in conjunction with the accompanying drawings, in which:

[0027] FIG. 1 is a schematic view showing a configuration of a hydraulic engine with hydraulic pumps according to a first embodiment of the present invention; and

[0028] FIG. 2 is a schematic view showing a configuration of a hydraulic engine with hydraulic pumps according to a second embodiment of the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0029] Hereinafter, an explanation on a hydraulic engine with hydraulic pumps according to the present invention will be in detail given with reference to the attached drawings.

[0030] A hydraulic engine according to the present invention includes a power supply 10 adapted to supply power to a driving part 20 and to charge the power generated from rotational load bodies 49 through the driving of a power driving part 40, the driving part 20 driven through the power supplied from the power supply 10, a pair of hydraulic pumps 30 adapted to pump a fluid through the rotation of the driving part 20, and the power driving part 40 adapted to generate a driving force through the reciprocation of a driving piston 45 caused by the fluid supplied from the pair of hydraulic pumps 30.

[0031] According to the present invention, the hydraulic engine is configured wherein a pair of first and second pistons 42 and 43 disposed on the power driving part 40 moves in the same direction as each other through the pumping of the pair of hydraulic pumps 30 so that the driving piston 45 disposed in a casing 41 of the power driving part 40 is reciprocated to rotate connecting rods 46 and 47, thereby rotating the rotational load bodies 49.

[0032] Moreover, the power driving part 40 obtains the power or electric power source from the rotation of the rotational load bodies 49 caused by the rotational forces of the connecting rods 46 and 47.

First Embodiment

[0033] FIG. 1 is a schematic view showing a configuration of a hydraulic engine with hydraulic pumps according to a first embodiment of the present invention.

[0034] As shown in FIG. 1, the hydraulic engine with hydraulic pumps according to the present invention includes the driving part 20 rotating by means of the power supply 10.

[0035] The power supply 10 includes a battery or charger (not shown) to which the power is charged, and otherwise, the power supply 10 includes a battery adapted to supply power to the driving part 20 and a charger adapted to charge the power generated from the power driving part 40 thereto.

[0036] That is, the power supply 10 includes both of the battery for supplying power and the charger for charging power, and otherwise, the power supply 10 includes a single charger for supplying power to the driving part 20 and for charging power thereto.

[0037] The driving part 20 makes use of an electric motor rotating by means of the power supplied from the power supply 10.

[0038] The driving part 20 is connected to the pair of hydraulic pumps 30, and the hydraulic pumps 30 serve to pump a fluid through the driving of the driving part 20. The hydraulic pumps 30 supply or recover the fluid according to the rotation of the driving part 20.

[0039] The hydraulic pumps 30 have connection hoses 31 connected to the first and second pistons 42 and 43 of the power driving part 40. The connection hoses 31 are made of a soft synthetic resin capable of moving gently in accordance with the movements of the first and second pistons 42 and 43.

[0040] One pair of hydraulic pumps 30 is disposed to allow the first and second pistons 42 and 43 to move in different directions from each other, and one of the hydraulic pumps 30 is located correspondingly to the first piston 42, while the other is being located correspondingly to the second piston 43.

[0041] On the other hand, the hydraulic pumps 30 are configured wherein the first piston 42 and the second piston 43 can move to the opposite directions to each other by means of one pump. If the first piston 42 moves forward, the second piston 43 moves backward, and contrarily, if the second piston 43 moves forward, the first piston 42 moves backward.

[0042] The power driving part 40 rotates the rotational load bodies 49 by means of the first and second pistons 42 and 43 moving through the hydraulic pumps 30 and by means of the driving piston 45 reciprocated by the first and second pistons 42 and 43.

[0043] The power driving part 40 includes the casing 41 having a given size, the first and second pistons 42 and 43 reciprocated in the interior of the casing 41 by means of the hydraulic pumps 30, the driving piston 45 reciprocated by a given distance by means of the reciprocation of the first and second pistons 42 and 43, the connecting rods 46 and 47 reciprocatedly rotating by means of the driving piston 45, and the rotational load bodies 49 rotating by means of the rotation of the connecting rods 46 and 47.

[0044] The casing 41 takes a shape of a cylinder having given length and diameter and has the first piston 42 and the second piston 43 disposed in the interior thereof in such a manner as to be reciprocated by means of the hydraulic pumps 30.

[0045] The first piston 42 is located on one side of the casing 41 in such a manner as to be reciprocated by a given distance by means of the driving of one side hydraulic pump 30, and the second piston 43 is located on the other side of the casing 41 in such a manner as to be reciprocated by a given distance by means of the driving of the other side hydraulic pump 30.

[0046] The first piston 42 is located on one side of the casing 41 and is connected to one side connection hose 31 in such a manner as to be driven by means of one side hydraulic pump 30. The second piston 43 is located on the other side of the casing 41 and is connected to the other side connection hose 31 in such a manner as to be driven by means of the other side hydraulic pump 30.

[0047] The fluid, which moves by means of the first piston 42 and the second piston 43, is filled between the first piston 42 and the second piston 43, and the fluid makes use of general oil as an incompressible fluid.

[0048] Further, the driving piston 45 is located between the first piston 42 and the second piston 43. That is, the driving piston 45 is disposed on the intermediate position of the casing 41 in such a manner as to be movable according to the movement of the fluid.

[0049] The driving piston 45 has a shape of a disc having a given thickness, and the connecting rods 46 and 47 are disposed on both surfaces of the driving piston 45 to convert the linear motion of the driving piston 45 into rotational motion.

[0050] The first connecting rod 46 is disposed on one surface of the driving piston 45, and the second connecting rod 47 on the other surface of the driving piston 45. Further, crankshafts 48 are rotatably mounted on the first connecting rod 46 and the second connecting rod 47.

[0051] The crankshafts 48 serve to convert the linear motions of the first connecting rod 46 and the second connecting rod 47 into the rotational motions. The rotational load bodies 49 are disposed on the first connecting rod 46 and the second connecting rod 47.

[0052] The rotational load bodies 49 are disposed on both ends of the crankshaft 48 mounted on the first connecting rod 46 and also disposed on both ends of the cranks shaft 48 mounted on the second connecting rod 47, so that the four rotational load bodies 49 are provided.

[0053] It should be understood that the rotational load bodies 49 include rotational shafts (not shown) requiring rotational forces or all of parts requiring rotational forces like a generator from which power is generated. That is, the rotational load bodies 49 are generators or rotational shafts.

[0054] Further, shock absorbing members 50 are disposed on both ends of the casing 41 to prevent the connection hoses 31 from being damaged or broken and to absorb the shocks caused upon the contacts of the first piston 42 and the second piston 43 with both ends of the casing 41.

Second Embodiment

[0055] FIG. 2 is a schematic view showing a configuration of a hydraulic engine with hydraulic pumps according to a second embodiment of the present invention.

[0056] As shown in FIG. 2, the hydraulic engine according to the second embodiment of the present invention includes the power supply 10, the hydraulic pumps 30 and the power driving part 40 in the same manner as according to the first embodiment of the present invention. Accordingly, an explanation on the same parts will be avoided, and hereinafter, a driving part 20 adopted in the second embodiment of the present invention will be in detail explained.

[0057] The driving part 20 is driven by means of the power supplied from the power supply 10 and includes a transmission 21 rotating by means of the driving part 20 and a hydraulic motor 22 rotating by means of the transmission 21.

[0058] The transmission 21 rotates by means of the rotational force of the driving part 20 and increase or decreases the number of rotations of the driving part 20. That is, the transmission 21 increases the number of rotations of the motor as the driving part 20, so that the driving part 20 can rotate at a higher speed.

[0059] The transmission 21 rotates the hydraulic motor 22, and the hydraulic motor 22 rotates at a high speed by means of the transmission 21 rotating at a high speed so that the hydraulic pumps 22 can pump a fluid at a higher speed.

[0060] Next, an explanation on an operating method for the hydraulic engine with the hydraulic pumps according to the present invention will be in detail given.

[0061] As shown in FIG. 1, the hydraulic engine according to the first embodiment of the present invention is configured wherein the driving part 20 is driven by means of the power supplied from the battery or charger to which the power is charged. The driving part 20 makes use of the electric motor rotating by means of the power applied thereto.

[0062] The driving part 20 drives the hydraulic pumps 30, and the hydraulic pumps 30 serve to pump an incompressible fluid stored through the rotation of the driving part 20.

[0063] The fluid pumped by means of the hydraulic pumps 30 is supplied to the first piston 42 through the connection hose 31, and the first piston 42 linearly moves by means of the fluid supplied through the connection hose 31 disposed on one side hydraulic pump 30.

[0064] As shown in FIG. 1, the first piston 42 moves in a left direction from a right direction in the drawing, and the second piston 43 and the driving piston 45 move in a left direction of FIG. 1 by means of the fluid filled between the first piston 42 and the second piston 43.

[0065] At this time, the second piston 43 located in the opposite direction to the first piston 42 moves in the left direction of FIG. 1.

[0066] As the driving piston 45 moves, accordingly, the first connecting rod 46 and the second connecting rod 47 rotate the crankshafts 48.

[0067] On the other hand, the second piston 43 moves in the right direction of FIG. 1 by means of the fluid supplied from the other side hydraulic pump 30, and at this time, the first piston 42 moves in the right direction of FIG. 1.

[0068] The driving piston 45 moves in the right direction on the drawing together with the first piston 42 and the second piston 43, and as the driving piston 45 moves, accordingly, the first connecting rod 46 and the second connecting rod 47 move to rotate the crankshafts 48.

[0069] As the crankshafts 48 rotate, accordingly, the rotational load bodies 49 rotate. That is, the rotational load bodies 49 rotate by means of the crankshafts 48.

[0070] The rotational load bodies 49 disposed on the power driving part 40 rotate by the rotation of the connecting rods 46 and 47 and the crankshafts 48 as the driving piston 45 moves according to the movement of the fluid.

[0071] The rotational load bodies 49 rotate by means of the fluid supplied from the hydraulic pumps 30, and even if relatively large loads are generated from the rotation of the rotational load bodies 49, the rotational load bodies 49 can rotate with the same number of rotations as each other.

[0072] As shown in FIG. 2, the hydraulic engine according to the second embodiment of the present invention is configured wherein the driving part 20 is driven by means of the power supplied from the power supply 10 to rotate the transmission 21. The transmission 21 rotates with the number of rotations higher or lower than the driving part 20.

[0073] That is, the transmission 21 rotates with the number of rotations higher than the driving part 20 to allow the hydraulic motor 22 to rotate at a higher speed, and if necessary, the transmission 21 allows the hydraulic motor 22 to rotate at a low speed to obtain a large torque (output).

[0074] The hydraulic motor 22 drives the hydraulic pumps 30, and since the operations of the hydraulic pumps 30 are the same as above, a repeated explanation will be avoided.

[0075] As set forth in the foregoing, the hydraulic engine according to the present invention is configured wherein the rotational load bodies like the rotational shafts or generators can be at the same time driven on the single power driving part by means of the driving of the hydraulic pumps to obtain a large output, so that large torques can be produced from the rotational shafts or large power can be produced from the generators.

[0076] While the present invention has been described with reference to the particular illustrative embodiments, it is not to be restricted by the embodiments but only by the appended claims. It is to be appreciated that those skilled in the art can change or modify the embodiments without departing from the scope and spirit of the present invention.