Miniature hydraulic control power unit

Abstract

The utility model relates to the technical field of miniature hydraulic control power equipment, in particular to a miniature hydraulic control power unit which comprises a shell, an energy storage unit and a driving unit. The shell is provided with an oil liquid cavity; the energy storage unit is arranged on the shell and used for supplying oil liquid to the oil liquid cavity. The driving mechanism comprises a servo motor, a bidirectional gear pump and an unloading valve; the bidirectional gear pump is arranged in the oil liquid cavity; the servo motor is arranged on the shell, and a driving shaft of the servo motor is connected with the bidirectional gear pump; the unloading valve is arranged at an outlet of the oil cavity and used for being connected with the input end of the static loading device so as to achieve smooth transmission and control of oil from the oil cavity to the static loading device. The hydraulic station solves the problems that a traditional hydraulic station is large in power consumption, serious in heating, large in occupied space, difficult to maintain, high in use cost and the like, and a complex valve control unit and a huge pipeline system of the hydraulic station are inconvenient to maintain and high in cost.

Description

Technical Field

[0001] The utility model belongs to the technical field of micro hydraulic control power equipment, and particularly relates to a micro hydraulic control power unit. Background Art

[0002] In application fields such as metallurgy, petrochemical industry, and industry, various hydraulic stations are usually required to provide a hydraulic power source for various static loading devices.

[0003] However, the existing hydraulic stations are large in volume, high in power, high in power consumption, complex in connecting pipelines, many in leakage points, and inconvenient to maintain. Especially in some application occasions with low-speed static load, limited space, and strict noise control, the large volume, heat dissipation, and noise of the hydraulic station cannot meet the requirements. Summary of the Utility Model

[0004] The utility model provides a micro hydraulic control power unit, which solves the problems of large power consumption, serious heat generation, large floor space, difficult maintenance, and high use cost of traditional hydraulic stations. The complex valve control unit and huge pipeline system of the hydraulic station are not convenient for maintenance and have high costs.

[0005] In order to achieve the above object, the technical solution of the utility model is as follows:

[0006] A micro hydraulic control power unit includes a housing, an energy storage unit, and a driving unit;

[0007] The housing is provided with an oil chamber;

[0008] The energy storage unit is arranged on the housing, and the energy storage unit is used to supply oil to the oil chamber;

[0009] The driving mechanism includes a servo motor, a bi-directional gear pump, and an unloading valve;

[0010] The bi-directional gear pump is arranged in the oil chamber;

[0011] The servo motor is arranged on the housing, and the drive shaft of the servo motor is connected to the bi-directional gear pump;

[0012] The unloading valve is arranged at the outlet of the oil chamber, and the unloading valve is used to connect to the input end of the static loading device to realize the smooth transfer and control of oil from the oil chamber to the static loading device.

[0013] Preferably, it further includes a control unit arranged at the input end of the servo motor, and the control unit includes a controller;

[0014] The controller is connected to the servo motor.

[0015] Preferably, the energy storage unit includes two superchargers, which are respectively arranged on the housing.

[0016] Preferably, a shut-off valve is further arranged on the housing.

[0017] Preferably, a load limiting valve is arranged on the housing.

[0018] Preferably, a resistance valve is further arranged on the housing.

[0019] Technical effects and advantages of the present utility model:

[0020] 1. The micro hydraulic control power unit provided by this application is miniaturized, the product structure is integrated modularly, eliminating the original intricate hydraulic connection pipes, valve control components and various filter elements with high costs, and without the need for an overly large fuel tank. The use of the energy storage unit can effectively simplify the hydraulic station configuration and reduce the product volume.

[0021] 2. It replaces the high-power motor, reduces the system power consumption, and reduces the system usage cost;

[0022] 3. The use of a closed system eliminates the intricate hydraulic pipelines, reduces the risk of oil pollution, and reduces the system maintenance cost. Description of the Drawings

[0023] Figure 1 is a schematic diagram of a micro hydraulic control power unit provided by an embodiment of this application;

[0024] Figure 2 is a schematic diagram of another perspective of a micro hydraulic control power unit provided by an embodiment of this application;

[0025] Figure 3 is a cross-sectional view of a micro hydraulic control power unit provided by an embodiment of this application;

[0026] Figure 4 is a pipeline diagram of a micro hydraulic control power unit provided by an embodiment of this application.

[0027] Reference numerals in the figures: 1. Housing; 11. Oil chamber; 12. Shut-off valve; 13. Load limiting valve; 14. First resistance valve; 15. Second resistance valve; 16. Filling valve; 17. Thermal conductivity valve; 18. First pressure measuring port; 19. Second pressure measuring port; 2. Energy storage unit; 21. Supercharger; 3. Driving unit; 31. Servo motor; 311. Adjusting handwheel; 32. Bidirectional gear pump; 33. Unloading valve; 4. Actuator. Detailed Embodiment

[0028] The following embodiments given in conjunction with the drawings further elaborate on the present utility model in detail.

[0029] SeeFigure 1 , Figure 2 and Figure 3 As shown in Figure 1 , Figure 2 and Figure 3 , a micro hydraulic control power unit includes a housing 1, an energy storage unit 2 and a drive unit 3.

[0030] An oil chamber 11 is provided inside the housing 1, and the oil chamber 11 is located in front of the housing 1.

[0031] The energy storage unit 2 is arranged on the housing 1. The energy storage unit 2 is communicated with the oil chamber 11, and the energy storage unit 2 is used to provide oil for the oil chamber 11.

[0032] The drive mechanism includes a servo motor 31, a bi-directional gear pump 32 and an unloading valve 33.

[0033] The bi-directional gear pump 32 is arranged in the oil chamber 11, and the base of the bi-directional gear pump 32 can be fixed on the side wall of the oil chamber 11 by bolts

[0034] The base of the servo motor 31 can be fixed on the housing 1 by bolts. The drive shaft of the servo motor 31 is connected with the input shaft of the bi-directional gear pump 32 through a coupling. An adjusting handwheel 311 is further arranged at the drive end of the servo motor 31, and the movement of the servo motor 31 can also be adjusted through the adjusting handwheel 311.

[0035] The unloading valve 33 is arranged at the outlet position of the oil chamber 11. The unloading valve 33 is used to connect with the input end of the static loading device to realize the smooth transfer and control of the oil from the oil chamber 11 to the static loading device. Optionally, the static loading device can be an actuator 4, etc.

[0036] Preferably, through the unloading valve 33, the oil flow or pressure can be adjusted to meet the specific requirements of different static loading tests.

[0037] In the embodiment of the present application, the servo motor 31 drives the bi-directional gear pump 32 to work. Under the action of the energy storage unit 2, the oil in the oil chamber 11 can act on the static loading device through the unloading valve 33 to realize the smooth transfer and control of the oil from the oil chamber 11 to the static loading device. The structure is simple, and it can solve the problems of large power consumption, serious heating, large occupied space, difficult maintenance and high use cost of the traditional hydraulic station.

[0038] See Figure 1 As shown in Figure 1 , it further includes a control unit arranged at the input end of the servo motor 31, and the control unit can include a controller. Specifically, the control end of the controller is connected with the input end of the servo motor 31. By adjusting the controller, the controller can control the servo motor 31 to work. In the embodiment of the present application, the control unit and the controller are not shown.

[0039] SeeFigure 1 As shown, the energy storage unit 2 may include two superchargers 21, which are respectively arranged on opposite sides of the housing 1, and the outlets of the superchargers 21 are communicated with the oil chamber 11.

[0040] In the embodiment of the present application, by adding two energy storage units 2 to the housing 1, the storage capacity of the oil can be increased, facilitating the injection of the oil into the oil chamber 11 as needed to realize the circulation of the oil in the oil chamber 11. The oil can be filled into the oil chamber 11 by a pressurized filling method. Using a special filling tool to fill the oil into the oil chamber 11 can avoid the contact of the oil with the outside, and the oil is not easily contaminated.

[0041] See Figure 4 As shown, a locking valve 12 is further arranged on the housing 1. Through the locking valve 12, the function of maintaining the specific position during the operation of the actuator can be realized.

[0042] See Figure 4 As shown, a load limiting valve 13 is arranged on the housing 1. The load limiting valve 13 is used to limit the pressure of the supercharger 21, having a certain safety protection effect.

[0043] See Figure 4 As shown, an anti-resistance valve is further arranged on the housing 1. The anti-resistance valve may include a first anti-resistance valve 14 and a second anti-resistance valve 15. Through the first anti-resistance valve 14 and the second anti-resistance valve 15, the system can be stabilized under special working conditions, enabling the micro hydraulic control power unit to operate smoothly and reducing the occurrence of crawling or jitter.

[0044] A heat conduction valve 17 is further arranged on the housing 4. The heat conduction valve 17 is communicated with the oil chamber 11. When the oil passes through the heat conduction valve 17, the heat conduction valve 17 calculates the flow rate of the oil according to the absorbed heat and the flow rate of the oil. When the pressure in the cavity increases due to the increase in oil temperature inside the power source, the heat conduction valve 17 can be opened to release the excess pressure in the oil chamber 11.

[0045] A pressure test port is arranged on the housing 1. The pressure test port may include a first pressure test port and a second pressure test port. Through the first pressure test port and the second pressure test port, the pressures of the two working chambers of the actuator can be monitored to prevent damage to the components due to the over-limit of the system operating pressure.

[0046] To facilitate the understanding of the above technical solutions of the present invention, the working principle or operation method of the present invention in the actual process will be described in detail below.

[0047] Working principle of the present invention:

[0048] As needed, a signal is sent from the controller 41 to the servo drive, thereby controlling the rotational speed and direction of rotation of the servo motor 31. The drive shaft of the servo motor 31 drives the two-way gear pump 32 to rotate forward or backward through a coupling, so that the output hydraulic fluid passes through the locking valve 12 and the load limiting valve 13, and then passes through the resistance valve and the unloading valve 33, and finally acts on the actuator 4 to control the running direction and speed of the actuator 4. The excess pressure can be excluded through the load limiting valve 13 to keep the system running stably. When the actuator 4 runs to the designated position, the locking valve 12 locks the position, and the actuator 4 performs the position holding function.

[0049] The above are only the preferred embodiments of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the creative concept of the present invention, several modifications and improvements can still be made, and these all belong to the protection scope of the present invention.

Claims

1. A micro hydraulic power unit, characterized in that: It comprises a housing (1), an energy storage unit (2) and a drive unit (3); The housing (1) is provided with an oil chamber (11); The energy storage unit (2) is arranged on the housing (1), and the energy storage unit (2) is used to supply oil to the oil chamber (11); The driving unit comprises a servo motor (31), a bidirectional gear pump (32) and an unloading valve (33); The bidirectional gear pump (32) is arranged in the oil chamber (11); The servo motor (31) is arranged on the housing (1), and the driving shaft of the servo motor (31) is connected to the bidirectional gear pump (32).

2. A micro hydraulic control power unit according to claim 1, characterized in that: The unloading valve (33) is arranged at the outlet of the oil chamber (11), and the unloading valve (33) is used to be connected to the input end of the static loading device to achieve smooth transfer and control of oil from the oil chamber (11) to the static loading device.

3. A micro hydraulic control power unit according to claim 1, characterized in that: It also includes a control unit (4) arranged at the input end of the servo motor (31), wherein the control unit (4) includes a controller (41); The controller (41) is connected to the servo motor (31).

4. A micro hydraulic control power unit according to claim 1, characterized in that: The energy storage unit (2) comprises two superchargers (21), and the superchargers (21) are respectively arranged on the housing (1).

5. A micro hydraulic control power unit according to claim 1, characterized in that: The housing (1) is also provided with a lock valve (12).

6. A micro hydraulic control power unit according to claim 1, characterized in that: The housing (1) is provided with a load limiting valve (13).

7. A micro hydraulic control power unit according to claim 1, characterized in that: The housing (1) is also provided with an anti-resistance valve.

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