A marine electromechanical-hydraulic integrated drive power unit

Abstract

This utility model provides a marine electromechanical-hydraulic integrated drive power unit, including an electro-hydraulic power unit body. A sealing cylinder is provided in the middle of the electro-hydraulic power unit body. An oil regulating piston is slidably connected in the middle of the sealing cylinder. An actuating rod is welded in the middle of the regulating piston. A positioning post for restoring the regulating piston to its initial position is provided on the side end of the sealing cylinder. A positioning groove is provided on the side end of the regulating piston near the inner wall of the sealing cylinder. A deformable piece is welded and fixed to the end of the positioning post near the regulating piston. A compression post is adhered to the inner wall of the deformable piece. A pressure sensor for monitoring the movement distance of the positioning post is embedded in the middle of the positioning post. An electric push rod for controlling and positioning the positioning post is fixedly connected to the end of the positioning post away from the regulating piston by bolts. This utility model can accurately reset the regulating piston after it has finished working, avoiding large movement errors in the next movement of the regulating piston.

Description

Technical Field

[0001] This utility model relates to the field of electro-hydraulic actuator technology, and in particular to a marine electromechanical-hydraulic integrated drive power unit. Background Technology

[0002] The electro-hydraulic actuator ingeniously integrates a servo motor, a two-way piston pump, a control valve assembly, an actuator, and necessary auxiliary components such as an oil tank, filter, and sensors into a compact unit. This highly integrated design not only significantly reduces the system size and weight, but more importantly, eliminates the lengthy piping connections found in traditional hydraulic systems, thereby significantly improving system reliability and reducing energy consumption.

[0003] Electro-hydraulic actuators operate by supplying hydraulic oil to both sides of a double-acting piston pump. The motor precisely controls the oil flow to regulate the pump's movement, thus controlling the equipment. After operation, the pump returns to its original position. Oil leakage is an unavoidable common problem in hydraulic equipment, and electro-hydraulic actuators are no exception. This leakage prevents the motor from accurately controlling the oil flow, causing errors in the pump's movement. Therefore, precise repositioning of the pump is crucial; otherwise, prolonged operation will lead to increasingly larger movement errors. Utility Model Content

[0004] The purpose of this invention is to provide a marine electromechanical-hydraulic integrated drive power unit to solve the problems mentioned in the background art.

[0005] The technical solution adopted by this utility model to solve its technical problem is: a marine electro-hydraulic integrated drive power unit, including an electro-hydraulic power unit body, a sealing cylinder in the middle of the electro-hydraulic power unit body, an oil regulating piston slidably connected in the middle of the sealing cylinder, an actuating rod welded in the middle of the regulating piston, a positioning post for restoring the regulating piston to its initial position on the side end of the sealing cylinder, a positioning groove on the side end of the regulating piston near the inner wall of the sealing cylinder, two oil supply holes on the side end of the sealing cylinder, and the regulating piston located in the middle of the two oil supply holes;

[0006] The positioning post has a deformable piece welded to one end near the adjusting piston. An extrusion post is bonded to the inner wall of the deformable piece. A pressure sensor for monitoring the movement distance of the positioning post is embedded in the middle of the positioning post.

[0007] The positioning column has an electric actuator that controls its positioning by bolts at the end away from the adjusting piston. The electro-hydraulic power unit has a control chip inside, and the pressure sensor and the electric actuator are both connected to the control chip. The positioning column is fitted with a sealing ring and a compression ring in the middle.

[0008] Preferably, the positioning groove is a ring structure, and the bottom of the two sides of the positioning groove is an inclined surface.

[0009] Preferably, the deformable piece is an arc-shaped structure formed by stamping copper sheet, and the side corner of the adjusting piston is provided with an arc.

[0010] Preferably, a rubber column is bonded to one end of the extrusion column near the pressure sensor, and when the adjusting piston is not extruding the deformable sheet, there is a gap between the rubber column and the pressure sensor.

[0011] Preferably, the side end of the sealing cylinder is fixedly connected to a mounting plate by bolts. The mounting plate has a mounting hole on the side near the sealing cylinder. The sealing ring and the extrusion ring are both located in the mounting hole. The sealing ring is located at the connection between the positioning post and the sealing cylinder. The side of the mounting plate away from the sealing cylinder is threaded with two extrusion bolts. The top of the extrusion bolts abuts against the extrusion ring.

[0012] Preferably, a U-shaped fixing frame is fixedly connected to the side of the mounting plate away from the sealing cylinder, and the electric actuator is fixedly connected to the fixing frame by bolts, with the power output end of the electric actuator passing through the fixing frame.

[0013] The beneficial effects of the extrusion device provided by this utility model are as follows: when the adjusting piston drives the action rod to complete its work and then resets, the adjusting piston will extrude the deformable sheet. The pressure sensor will sense the extrusion of the rubber column. At this time, the electric push rod drives the positioning column to move, and the positioning column will be locked into the positioning groove, thereby resetting the adjusting piston to the initial position. This ensures that the movement of the adjusting piston will not have too much error, and greatly increases the service life of the equipment. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the main body connection of the electro-hydraulic power unit provided by this utility model.

[0015] Figure 2 This is a schematic diagram of the internal connection of the sealing cylinder provided by this utility model.

[0016] Figure 3 This is a three-dimensional connection diagram of the positioning column and adjusting piston provided by this utility model.

[0017] Figure 4 This is a schematic diagram of the internal connection of the positioning column provided by this utility model.

[0018] In the diagram: 1 Electro-hydraulic power unit body, 2 Sealing cylinder, 3 Actuating rod, 4 Adjusting piston, 5 Oil supply hole, 6 Mounting plate, 7 Fixing bracket, 8 Positioning column, 9 Sealing ring, 10 Extrusion ring, 11 Extrusion bolt, 12 Electric push rod, 13 Positioning groove, 14 Deformation plate, 15 Extrusion column, 16 Pressure sensor, 17 Rubber column. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0020] See Figure 1-4 This utility model provides a marine electro-hydraulic integrated drive power unit, including an electro-hydraulic power unit body 1. A sealing cylinder 2 is located in the middle of the electro-hydraulic power unit body 1. An oil regulating piston 4 is slidably connected to the middle of the sealing cylinder 2. An actuating rod 3 is welded to the middle of the regulating piston 4. A positioning post 8 for restoring the regulating piston 4 to its initial position is provided on the side end of the sealing cylinder 2. A positioning groove 13 is provided on the side end of the regulating piston 4 near the inner wall of the sealing cylinder 2. Two oil supply holes 5 are provided on the side end of the sealing cylinder 2. The regulating piston 4 is located between the two oil supply holes 5. A deformable piece 14 is welded and fixed to the end of the positioning post 8 near the regulating piston 4. A compression post 15 is adhered to the inner wall of the deformable piece 14. A positioning post 8 is embedded in the middle for positioning... The pressure sensor 16 monitors the movement distance of the positioning column 8. The end of the positioning column 8 furthest from the adjusting piston 4 is fixedly connected to an electric push rod 12 for controlling and positioning the positioning column 8 by bolts. The electro-hydraulic power unit body 1 is equipped with a control chip. Both the pressure sensor 16 and the electric push rod 12 are connected to the control chip. The positioning column 8 is fitted with a sealing ring 9 and a compression ring 10 in the middle. When the electro-hydraulic power unit body 1 is working, it supplies oil to one side of the adjusting piston 4 in the sealing cylinder 2 through the oil supply hole 5. After the work is completed, it supplies oil to the other side of the adjusting piston through another oil supply hole 5, thereby resetting the adjusting piston 4. If the electro-hydraulic power unit body 1 leaks oil, the adjusting piston 4 will not be able to reset accurately, and a slight deviation will occur.

[0021] The positioning groove 13 has an annular structure with inclined surfaces on both sides. The deformable piece 14 is an arc-shaped structure formed by stamping copper sheet. The side corner of the adjusting piston 4 has an arc. A rubber column 17 is attached to the end of the extrusion column 15 near the pressure sensor 16. When the adjusting piston 4 is not extruding the deformable piece 14, there is a gap between the rubber column 17 and the pressure sensor 16. When the adjusting piston 4 is resetting, it will extrude the deformable piece 14, causing it to deform and thus move the extrusion column 15. The extrusion column 15 will extrude the pressure sensor 16 through the rubber column 17, causing the pressure sensor 16 to generate a value. The pressure sensor 16 will transmit the signal to the control chip. The control chip controls the electric push rod 12 to move the positioning column 8, inserting the top of the positioning column 8 into the positioning groove 13. The positioning column 8 extrudes the inner wall of the positioning groove 13, thereby accurately resetting the adjusting piston 4 to the initial position and avoiding large errors in the subsequent movement of the action rod 3 due to the inaccurate resetting of the adjusting piston 4.

[0022] A mounting plate 6 is fixedly connected to the side end of the sealing cylinder 2 by bolts. The mounting plate 6 has a mounting hole on the side near the sealing cylinder 2. The sealing ring 9 and the compression ring 10 are both located in the mounting hole. The sealing ring 9 is located at the connection between the positioning post 8 and the sealing cylinder 2. Two compression bolts 11 are threadedly connected to the side of the mounting plate 6 away from the sealing cylinder 2. The top of the compression bolts 11 abuts against the compression ring 10. A U-shaped fixing frame 7 is fixedly connected to the side of the mounting plate 6 away from the sealing cylinder 2. The electric push rod 12 is fixedly connected to the fixing frame 7 by bolts. The power output end of the electric push rod 12 passes through the fixing frame 7. After the positioning post 8 and the mounting plate 6 are installed, the compression ring 10 is compressed and moved by the compression bolts 11. The compression ring 10 compresses the rubber ring 9, causing the rubber ring 9 to deform and press the inner wall of the rubber ring 9 tightly against the surface of the positioning post 8, ensuring the sealing at the connection between the positioning post 8 and the sealing cylinder 2. The fixing frame 7 can support the electric push rod 12.

[0023] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A marine electromechanical-hydraulic integrated drive power unit, comprising an electro-hydraulic power unit body (1), characterized in that: The electro-hydraulic power unit body (1) has a sealing cylinder (2) in the middle, and an oil regulating piston (4) is slidably connected in the middle of the sealing cylinder (2). An actuating rod (3) is welded in the middle of the regulating piston (4). The side end of the sealing cylinder (2) is provided with a positioning column (8) for restoring the regulating piston (4) to its initial position. The side end of the regulating piston (4) near the inner wall of the sealing cylinder (2) is provided with a positioning groove (13). The side end of the sealing cylinder (2) is provided with two oil supply holes (5). The regulating piston (4) is located in the middle of the two oil supply holes (5). The positioning post (8) has a deformable piece (14) welded and fixed at one end near the adjusting piston (4). An extrusion post (15) is bonded to the inner wall of the deformable piece (14). A pressure sensor (16) for monitoring the movement distance of the positioning post (8) is embedded in the middle of the positioning post (8). The positioning column (8) has an electric push rod (12) for controlling and positioning the positioning column (8) at one end away from the adjusting piston (4) by bolts. The electro-hydraulic power unit body (1) is equipped with a control chip. The pressure sensor (16) and the electric push rod (12) are both connected to the control chip. The positioning column (8) is fitted with a sealing ring (9) and a compression ring (10) in the middle.

2. The marine electromechanical-hydraulic integrated drive power unit according to claim 1, characterized in that: The positioning groove (13) is a ring structure, and the bottom of the two sides of the positioning groove (13) is an inclined surface.

3. The marine electromechanical-hydraulic integrated drive power unit according to claim 1, characterized in that: The deformable piece (14) is an arc-shaped structure formed by stamping copper sheet, and the side corner of the adjusting piston (4) is provided with an arc.

4. The marine electromechanical-hydraulic integrated drive power unit according to claim 1, characterized in that: A rubber column (17) is attached to one end of the extrusion column (15) near the pressure sensor (16). When the adjusting piston (4) is not extruding the deformable piece (14), there is a gap between the rubber column (17) and the pressure sensor (16).

5. A marine electromechanical-hydraulic integrated drive power unit according to claim 1, characterized in that: The side end of the sealing cylinder (2) is fixedly connected to the mounting plate (6) by bolts. The mounting plate (6) has a mounting hole on the side near the sealing cylinder (2). The sealing ring (9) and the extrusion ring (10) are both located in the mounting hole. The sealing ring (9) is located at the connection between the positioning post (8) and the sealing cylinder (2). The side of the mounting plate (6) away from the sealing cylinder (2) is threaded with two extrusion bolts (11). The top of the extrusion bolts (11) abuts against the extrusion ring (10).

6. A marine electromechanical-hydraulic integrated drive power unit according to claim 5, characterized in that: The mounting plate (6) is fixedly connected to a U-shaped frame (7) on the side away from the sealing cylinder (2). The electric push rod (12) is fixedly connected to the frame (7) by bolts. The power output end of the electric push rod (12) passes through the frame (7).

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