Oil-immersed hydraulic power pack

Abstract

The present invention relates to an oil-immersed hydraulic power pack enabling the simple and efficient formation of flow channels for transporting oil stored inside an oil tank to the outside and reintroducing the oil, the oil-immersed hydraulic power pack comprising: a fixing body which is provided with a manifold and a terminal box in the direction of one side, has an insertion recess formed in the direction of the other side, and has formed, at one side on the outside of the insertion recess, a pipe unit having a pair of flow channels; a driving motor of which the end portion on one side is installed in the insertion recess, and which drives a pump; a motor cover which has formed, at one side, a cover recess fitted onto the end portion on the other side of the driving motor, and which fixes the driving motor in association with the fixing body, the motor cover having, on a peripheral portion thereof, a flow channel unit having a pair of flow channels; a pair of connection pipes which connect the flow channels of the pipe unit and the flow channel unit to each other so as to enable oil suctioned by the driving of the pump to be transported to the outside and reintroduced; the pump which comprises a suction pipe, through which oil is suctioned, and a filter, and which is installed, with an internal flow channel provided therein, on the motor cover; and an oil tank which is installed on the fixing body so as to enclose the driving motor and the pump.

Description

Submerged hydraulic power pack

[0001] The present invention relates to an infiltration type hydraulic power pack, and more specifically, to an infiltration type hydraulic power pack that improves the internal structure so that the formation of a flow path for transferring and re-entering oil stored inside an oil tank to the outside can be simple and efficient.

[0002]

[0003] Generally, a hydraulic power pack is a piece of equipment that plays a crucial role in hydraulic systems by generating and supplying hydraulic pressure to enable the operation of mechanical equipment.

[0004] Most of these hydraulic power packs are external types in which the motor is located outside the oil tank; however, due to the structural disadvantages of being long, generating significant noise, and being relatively vulnerable to shock and vibration, there is also considerable demand for internal types in which the motor is located inside the oil tank.

[0005] In other words, by embedding the motor and pump simultaneously inside the oil tank, not only can the product length be reduced, but noise can also be decreased and the motor protected from shock and dust.

[0006] For this reason, various built-in type (hereinafter 'immersed type') products have been proposed and disclosed as inventions or disclosed to the general public as actual products, such as the “oil-type servo motor drive shaft integrated power pack” in Korean Registered Patent Publication No. 10-1158109 and the “immersed type power pack equipped with a fluid path inside the motor rotating shaft” in Korean Registered Patent Publication No. 10-2732118.

[0007] However, since most of the above-mentioned immersion-type hydraulic power packs are configured with the manifold, pump, and motor positioned in sequence, a problem arises in that the formation of the flow path for transferring oil stored inside the oil tank to the outside becomes complex and inefficient.

[0008] In other words, due to structural reasons related to the order in which the pump and motor are installed, many bends may be required in the flow path, and the length of the internal flow path penetrating the pump may increase; consequently, various problems such as increased manufacturing costs and hydraulic loss may occur.

[0009] In addition, the installation of a bracket for fixing the motor, which is located furthest from the manifold, may result in a complex internal structure of the oil tank or a problem where the length of the product is formed to be somewhat long.

[0010] As various problems have been pointed out regarding the configuration of the infiltration-type hydraulic power packs currently proposed to the general public, it can be said that a clear solution to this is required.

[0011]

[0012] The present invention is an invention proposed for the purpose of solving the above-mentioned problem, and

[0013] Since most conventional submersible hydraulic power packs are configured with the manifold, pump, and motor positioned in sequence, a problem arises in that the formation of the flow path for transferring oil stored inside the oil tank to the outside becomes complex and inefficient.

[0014] The purpose is to propose a clear solution to the problem that the internal structure of the oil tank may become complicated or the length of the product may become somewhat longer due to the installation of a bracket for fixing the motor.

[0015]

[0016] The present invention aims to realize the above-mentioned objectives,

[0017] A submersible hydraulic power pack is provided, comprising: a fixed body having a manifold and a terminal box in one direction and an internal groove formed in the other direction, and a piping section having a pair of oil passages formed on one side outside the internal groove; a driving motor having one end installed in the internal groove to drive a pump; a motor cover having a cover groove formed on one side to fit the other end of the driving motor, and a fluid passage section having a pair of oil passages formed on the periphery to fix the driving motor in conjunction with the fixed body; a pair of connecting pipes that connect the fluid passages of the piping section and the fluid passage section to each other so that oil sucked in by the driving of the pump is transferred to the outside and re-inflow; a pump installed on the motor cover having an internal fluid passage for transferring the sucked oil, including a suction pipe and a filter for sucking oil; and an oil tank installed on the fixed body in a manner that encloses the driving motor and the pump.

[0018] At this time, the fixed body is configured such that a plurality of cylindrical protrusions including screw grooves are provided around the insertion groove, and the motor cover is configured such that cylindrical protrusions including screw holes are provided at positions corresponding to each of the protrusions, so that a fixing bolt is fastened to each corresponding protrusion and protrusion, thereby interconnecting the drive motor and a pair of connecting pipes.

[0019]

[0020] The immersion-type hydraulic power pack according to the present invention is,

[0021] Since the drive motor and pump are configured to be installed in sequence based on a fixed body equipped with a manifold (in the reverse order of the conventional system), the formation of flow paths for transferring and recirculating oil stored inside the oil tank to the outside can be made simple and efficient.

[0022] In addition, since the drive motor is directly installed on the fixed body, there is no need to provide a bracket that would complicate the internal structure of the oil tank or inevitably increase the length of the product.

[0023] In addition, the process of securing the motor cover to the fixed body using multiple fixing bolts has the effect of simultaneously and firmly securing the drive motor and a pair of connecting pipes.

[0024]

[0025] FIGS. 1A and FIGS. 1B are perspective views of a fixed body constituting the present invention.

[0026] FIG. 2 is an example diagram showing the installation of a driving motor on the fixed body.

[0027] FIG. 3 is a cross-sectional view showing the state in which the drive motor is installed.

[0028] FIG. 4 is a perspective view of a motor cover constituting the present invention.

[0029] FIGS. 5A and FIGS. 5B are exemplary diagrams illustrating the process of installing connecting pipes between the fixed body and the motor cover.

[0030] FIG. 6 is an example diagram showing the motor cover being fastened to the fixed body using a fixing bolt.

[0031] FIG. 7 is an example diagram showing the installation of a pump on the motor cover.

[0032] FIG. 8 is a perspective view showing the state in which the installation of the above-mentioned pump is completed.

[0033] FIG. 9 is a perspective view showing the state in which an oil tank is installed on the fixed body.

[0034]

[0035] The immersion-type hydraulic power pack according to the present invention is,

[0036] The device is characterized by comprising: a fixed body having a manifold and a terminal box in one direction and an internal groove formed in the other direction, and a piping section having a pair of oil passages formed on one side of the internal groove; a driving motor having one end installed in the internal groove to drive a pump; a motor cover having a cover groove formed on one side to fit the other end of the driving motor, and a fluid passage section having a pair of oil passages formed on the periphery to fix the driving motor in conjunction with the fixed body; a pair of connecting pipes that connect the fluid passages of the piping section and the fluid passage section to each other so that oil sucked in by the driving of the pump is transferred to the outside and re-introduced; a pump installed on the motor cover having an internal fluid passage for transferring the sucked oil, including a suction pipe and a filter for sucking in oil; and an oil tank installed on the fixed body in a manner that encloses the driving motor and the pump.

[0037]

[0038] The present invention relates to a submerged hydraulic power pack, and,

[0039] A fixed body (100) having a manifold (110) and a terminal box (120) in one direction and an insertion groove (130) formed in the other direction, and a pipe section (140) having a pair of oil passages formed on one side of the insertion groove (130); a drive motor (200) having one end installed in the insertion groove (130) to drive a pump (500); a motor cover (300) having a cover groove (310) formed on one side to fit into the other end of the drive motor (200), and a flow section (320) having a pair of oil passages formed on the periphery to fix the drive motor (200) in conjunction with the fixed body (100); and a pair of connecting pipes (400) that connect the flow paths of the pipe section (140) and the flow section (320) to each other so that oil sucked in by the operation of the pump (500) is transferred to the outside and re-inflow. It is characterized by being configured to include: a pump (500) installed in a motor cover (300) having an internal flow path (520) for transferring the sucked oil, and a suction pipe (510) for sucking oil and a filter (511); and an oil tank (600) installed in a fixed body (100) in a form that encloses the drive motor (200) and the pump (500).

[0040]

[0041] Hereinafter, embodiments of the present invention will be described in detail with reference to the attached drawings.

[0042] First, the fixed body (100) is a component that serves as the basis for the configuration of the present invention, and as shown in FIGS. 1a and 1b, it is configured such that a manifold (110) and a terminal box (120) are provided in one direction, and a driving motor (200) and an oil tank (600) are installed in the other direction.

[0043] That is, a manifold (110) is provided on one side of the fixed body (100) to allow for the installation of various control valves for controlling pressure, flow rate, and direction, and a terminal box (120) is provided to allow for the installation of equipment for power supply.

[0044] In addition, an insertion groove (130) corresponding to a driving motor (200) is formed on the other side of the fixed body (100), and as shown in FIG. 2, a driving motor (200) can be installed by inserting one end therein.

[0045] At this time, the drive motor (200) is a device that provides power for driving the pump (500), and is installed in the manner described above and driven by a control signal while submerged in oil so that pressure can be formed by driving the pump (500).

[0046] To this end, the drive motor (200) may be configured as an AC motor capable of operating without problems while mainly submerged in oil, but may also be configured as a DC motor on the premise that the sealing of the outer case protecting the motor is complete.

[0047] Additionally, the driving motor (200) may be configured as a dual-axis motor having a rotating shaft in both directions to reduce vibrations generated during driving. To this end, the fixed body (100) may be provided with a receiving groove (131) at the center of the insertion groove (130) so that one of the rotating shafts can be inserted together with a ball bearing.

[0048] That is, as shown in FIG. 3, the drive motor (200) is configured such that one of the rotating shafts is inserted into the receiving groove (131) and the other is used for driving the pump (500) and is supported on both sides, thereby reducing the vibration generated during driving compared to a configuration in which only one rotating shaft is provided for driving the pump (500).

[0049] In addition, the fixed body (100) is provided with a piping section (140) having a flow path connected to a manifold (110) in a manner adjacent to each other around the insertion groove (130), thereby enabling the transfer of oil to the outside and re-entry into the inside based on the body of the fixed body (100).

[0050] At this time, the piping section (140) may be configured to include a straight first pipe (141) used for transferring oil to the outside and a straight second pipe (142) used for re-entry of oil into the inside.

[0051] In addition, based on the above-mentioned insertion groove (130), a plurality of protrusions (150) including screw grooves are provided around it in the shape of cylinders, and a motor cover (300) used for fixing a drive motor (200) can be securely installed by inserting and fastening a fixing bolt (B) one by one into each of these.

[0052] That is, the motor cover (300) is a part for fixing the drive motor (200), and as shown in FIG. 4, it is configured in a shape such that a cover groove (310) is formed on one side and a communication hole (311) communicating with the cover groove (310) is formed in the center, and can be installed by being inserted into the other end of the drive motor (200).

[0053] At this time, the motor cover (300) may be provided with a plurality of protrusions (330) including screw holes around the cover groove (310) in the shape of cylinders at positions corresponding to each of the plurality of protrusions (150), and may be fixed together with the drive motor (200) by simultaneously inserting and fastening a fixing bolt (B) therein.

[0054] In addition, the motor cover (300) is provided with a fluid passage (320) having a fluid passage that is adjacent to each other around the cover groove (310), so that the oil can be transferred to the outside and re-entered into the inside based on the body of the fixed body (100).

[0055] That is, the above-mentioned Euro section (320) may be configured to include a first Euro pipe (321) of a multi-fold type used for transporting oil to the outside and a second Euro pipe (322) of a straight type used for re-entry of oil into the inside.

[0056] At this time, the first Euro tube (321) may be configured with a multiple bending type in which a bend occurs once in the middle and a bend also occurs at the end, and through this, it may be connected to a pump (500) for transferring oil to the outside.

[0057] And as shown in FIGS. 5a and 5b, a pair of connecting pipes (400) may be installed between the fixed body (100) and the motor cover (300) to allow a path for transferring and re-entering oil to the outside.

[0058] That is, the above pair of connecting pipes (400) are devices that form an intermediate path for fluid transfer, and are installed in a manner that connects the flow paths of the pipe section (140) and the flow path section (320) to each other, so that oil sucked in by the operation of the pump (500) can be transferred to the outside and at the same time re-entered.

[0059] At this time, the pair of connecting pipes (400) may be configured to include a first connecting pipe (410) installed in a manner that is inserted between the first pipe (141) and the first flow path (321), and may be installed in a simple manner such that one end is inserted into the first pipe (141) and the other end is inserted into the first flow path (321).

[0060] Additionally, it may be configured to include a second connecting pipe (420) installed in a manner that is inserted between the second pipe (142) and the second flow path (322), and can be installed in a simple manner such that one end is inserted into the second pipe (142) and the other end is inserted into the second flow path (322).

[0061] And as shown in FIG. 6, a pair of connecting pipes (400) together with a driving motor (200) can be firmly fixed between the fixed body (100) and the motor cover (300) by fastening one fixing bolt (B) to each corresponding projection (150) and projection (330).

[0062] That is, the fixed body (100) and the motor cover (300) are interconnected in such a way that one fixing bolt (B) is fastened to each corresponding projection (150) and projection (330), thereby allowing the drive motor (200) and a pair of connecting pipes (400) to be fixed.

[0063] In addition, the motor cover (300) is also used as a part for fixing the pump (500), and a plurality of screw holes or screw grooves are formed in the other direction so that the pump (500) can be installed by fastening a bolt.

[0064]

[0065] In addition, the pump (500) is a device for forming pressure for fluid transfer, and is driven by the drive motor (200) while installed on the motor cover (300) so that sufficient pressure can be formed for the suction and transfer of oil.

[0066] That is, the pump (500) is configured to have a shape having a plurality of through holes penetrating the body, and as shown in FIG. 7, it can be installed by a bolt fastening method using a plurality of screw holes or screw grooves formed on the other side of the motor cover (300).

[0067] At this time, as illustrated in FIG. 8, the pump (500) is configured to have an external suction pipe (510) for sucking oil and a filter (511), and is connected to a first flow path (321) of the above structure and simultaneously connected to an internal flow path (520) connected to the suction pipe (510) so that the entire path for transferring the sucked oil to the outside can be completed.

[0068] That is, the oil sucked into the suction pipe (510) through the filter (511) by the driving of the above-mentioned drive motor (200) and pump (500) passes sequentially through the internal flow path (520) of the pump (500), the first flow path pipe (321), the first connecting pipe (410), and the first pipe (141) and is supplied to the manifold (110), thereby being used to drive the actuator.

[0069] And it flows back in from the manifold (110) and moves by passing through the second pipe (142), the second connecting pipe (420), and the second flow path (322) in sequence, and can be supplied into the interior of the oil tank (600).

[0070] At this time, an L-shaped discharge pipe (323) with a bent section is connected to the second Euro pipe (322) in a manner that extends the flow path, allowing oil to be discharged toward the suction pipe (510).

[0071] This is a configuration for forming the oil discharge direction downward when the immersion type hydraulic power pack according to the present invention is installed horizontally, and through this, the formation of a vortex caused by oil discharge inside the oil tank (600) can be prevented.

[0072] For the same reason, when the immersion type hydraulic power pack according to the present invention is installed vertically, it is preferable to use a straight discharge pipe (323) so that the direction of oil discharge is formed downward.

[0073] Additionally, as shown in FIG. 9, the oil tank (600) is a cylindrical device having an internal space for storing oil, and is installed in a fixed body (100) in a form that incorporates a drive motor (200) and a pump (500) so that oil can be stored inside.

[0074] That is, the oil tank (600) can be configured with a shape having an inlet area and structure corresponding to the body of the fixed body (100), and can be fastened to the other side of the fixed body (100) by a bolt fastening method so that its interior is sealed.

[0075] At this time, a fueling hole and a fueling cap (610) are provided on one side of the outer circumference of the oil tank (600), that is, on the side located at the top while connected to the fixed body (100), and fuel can be poured into the internal space through this.

[0076] In this regard, another cap for refueling may be provided on one side of the fixed body (100) along with a refueling hole, thereby allowing a large amount of oil inside the oil tank (600) to be discharged to the outside.

[0077]

[0078] The embodiments described above are provided as examples to ensure that the technical concept of the present invention is sufficiently conveyed to those skilled in the art to which the present invention belongs, and the present invention is not limited to the embodiments described above and may be embodied in other forms.

[0079] To clearly explain the present invention, parts unrelated to the explanation have been omitted from the drawings, and in the drawings, the width, length, thickness, etc. of the components may be exaggerated or reduced for convenience.

[0080] In addition, the same reference numbers throughout the specification represent the same components.

[0081]

[0082] The immersion-type hydraulic power pack according to the present invention is,

[0083] The effect is that the formation of a flow path for transferring and re-entering the oil stored inside the oil tank to the outside can be made simple and efficient, and

[0084] This has the effect of eliminating the need to provide brackets that complicate the internal structure of the oil tank or inevitably increase the length of the product, and

[0085] Since the process of securing the motor cover to the fixed body using multiple fixing bolts enables the drive motor and a pair of connecting pipes to be simultaneously and securely fixed, there is sufficient industrial applicability.

Claims

1. A fixed body (100) having a manifold (110) and a terminal box (120) in one direction, an insertion groove (130) formed in the other direction, and a pipe section (140) having a pair of oil passages formed on one side outside the insertion groove (130); A driving motor (200) having one end installed in an insertion groove (130) to drive a pump (500); A motor cover (300) that fixes the drive motor (200) in conjunction with a fixed body (100), wherein a cover groove (310) is formed on one side and fitted to the other end of the drive motor (200), and a fluid passage section (320) having a pair of fluid passages through which oil passes is formed on the periphery; A pair of connecting pipes (400) that connect the flow paths of the piping section (140) and the flow path section (320) to each other so that oil sucked in by the operation of the pump (500) is transferred to the outside and re-inflow; A pump (500) installed on a motor cover (300) having an internal passage (520) for transporting the sucked oil, including a suction pipe (510) for sucking oil and a filter (511); and, An infiltration type hydraulic power pack characterized by comprising: an oil tank (600) installed in a fixed body (100) in a form that incorporates a drive motor (200) and a pump (500).

2. In Paragraph 1, The above-mentioned drive motor (200) is characterized by being composed of a dual-axis motor having a rotating shaft in both directions, and A hydraulic power pack of the infiltration type, characterized in that a receiving groove (131) is provided in the center of the insertion groove (130) so that one of the rotational shafts is inserted together with a ball bearing, thereby reducing vibration of the drive motor (200).

3. In Paragraph 1, The above fixed body (100) is configured in a shape in which a plurality of cylinder-shaped protrusions (150) including screw grooves are provided around the insertion groove (130). The above motor cover (300) is configured in a shape in which a cylinder-shaped protrusion (330) including a screw hole is provided at a position corresponding to each protrusion (150). A submerged hydraulic power pack characterized by being interconnected in such a way that a driving motor (200) and a pair of connecting pipes (400) are fixed by fastening one fixing bolt (B) to each corresponding projection (150) and projection (330).

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