Novel electro-hydraulic servo valve structure

Abstract

The utility model discloses a novel electro-hydraulic servo valve structure, which relates to the technical field of servo valves, and comprises a main body mechanism which is a main structure of a servo valve and performs the operation of a valve body of the servo valve; the main body mechanism comprises a valve body assembly, a voice coil motor is arranged at one end of the valve body assembly, a motor rotor adapter plate is installed at the driving end of the voice coil motor, a valve element adapter rod is installed in the center of the side face of the motor rotor adapter plate, and the end of the valve element adapter rod is in threaded connection with a valve element. The end of the valve element is connected with the input end of the valve body assembly. The voice coil motor is adopted, the voice coil motor can achieve fast response, high precision, low noise and low price, meanwhile, the voice coil motor is relatively easy to control, the valve element and the valve sleeve baffle are of a two-section type and are directly and rigidly connected with the motor shaft of the voice coil motor, and therefore the motor shaft and the valve element form a whole to move mutually. In this way, the valve element can move more sensitively, and the reaction is faster.

Description

Technical Field

[0001] The utility model relates to the technical field of servo valves, and specifically relates to a novel electro-hydraulic servo valve structure. Background Art

[0002] At present, the structure of electro-hydraulic pressure servo valves mainly adopts the structure of a double-nozzle flapper hydraulic pre-stage driving a spool valve. For example, the patent network discloses a direct-drive electro-hydraulic pressure servo valve (publication number: CN204371811U). This device uses a linear force motor, that is, a linear motor. The disadvantages of this motor are slow response, low precision, high noise, high price, high assembly precision requirements, and inconvenient adjustment. Therefore, those skilled in the art have proposed a novel electro-hydraulic servo valve structure. Summary of the Utility Model

[0003] Aiming at the deficiencies of the prior art, the utility model provides a novel electro-hydraulic servo valve structure. This device uses a voice coil motor instead of a linear motor to solve the problems in the above background.

[0004] To achieve the above objectives, the utility model is realized through the following technical solutions: A novel electro-hydraulic servo valve structure, including:

[0005] A main body mechanism, which is the main structure of the servo valve and performs the work of its valve body;

[0006] The main body mechanism includes a valve body assembly. One end of the valve body assembly is provided with a voice coil motor. The driving end of the voice coil motor is installed with a motor mover adapter plate. The center of the side surface of the motor mover adapter plate is installed with a spool adapter rod. The end of the spool adapter rod is threadedly connected with a spool. The end of the spool is connected to the input end of the valve body assembly;

[0007] A cooling mechanism, which is used to cool the internal components of the main body mechanism.

[0008] As a further technical solution of the utility model, the main body mechanism further includes a valve sleeve sleeved on the surface of the spool. A valve sleeve baffle is arranged on the spool on one side of the valve sleeve.

[0009] As a further technical solution of the utility model, the other end of the valve body assembly is provided with an electrical box assembly. The stator end of the voice coil motor is installed with a motor stator fixing plate.

[0010] As a further technical solution of the utility model, the cooling mechanism includes a water tank installed on the side surface of the valve body assembly. The surface of the voice coil motor is sleeved with a spiral tube whose two ends extend into the water tank.

[0011] As a further technical solution of the present utility model, a liquid pump is installed at one end of the spiral tube extending into the water tank, a semiconductor refrigeration sheet is installed on the inner wall of the water tank, the refrigerating end of the semiconductor refrigeration sheet faces the inside of the water tank, and the heating end extends to the outside of the water tank and is installed with a heat sink.

[0012] As a further technical solution of the present utility model, a temperature sensor is installed on the side of the voice coil motor.

[0013] Beneficial effects

[0014] The present utility model provides a novel electro-hydraulic servo valve structure. Compared with the prior art, it has the following

[0015] Beneficial effects:

[0016] 1. A novel electro-hydraulic servo valve structure. The device adopts a voice coil motor, which can achieve fast response, high precision, low noise, and low cost. At the same time, the control of the voice coil motor is relatively simple. The valve core and the valve sleeve baffle are of a two-stage type and are directly rigidly connected to the motor shaft of the voice coil motor, so that the motor shaft and the valve core form a whole and move relative to each other. This can make the movement of the valve core more sensitive and the reaction faster. At the same time, the assembly is simple and the after-sales replacement is convenient.

[0017] 2. A novel electro-hydraulic servo valve structure. The device is also provided with a cooling mechanism. When the voice coil motor works for a long time and the temperature around it is too high, the cooling mechanism can be used to cool the surrounding of the motor, avoiding the motor working in a high-temperature environment and prolonging the service life of the voice coil motor. Brief description of the drawings

[0018] Figure 1 It is a schematic structural diagram of a novel electro-hydraulic servo valve structure;

[0019] Figure 2 It is a side view of a novel electro-hydraulic servo valve structure;

[0020] Figure 3 It is a cross-sectional view of a novel electro-hydraulic servo valve structure;

[0021] Figure 4 It is an exploded view of the main mechanism of a novel electro-hydraulic servo valve structure.

[0022] In the figure: 1. Electrical box assembly; 2. Valve body assembly; 3. Valve core; 4. Valve sleeve baffle; 5. Voice coil motor; 6. Motor mover adapter plate; 7. Valve core adapter rod; 8. Motor stator fixing plate; 9. Spiral tube; 10. Water tank; 11. Liquid pump; 12. Semiconductor refrigeration sheet; 13. Temperature sensor. Specific implementation manners

[0023] The present disclosure will be further described in detail below in conjunction with the accompanying drawings and embodiments. It can be understood that the specific embodiments described herein are only used to explain the relevant content and do not limit the present disclosure. Additionally, it should be noted that for ease of description, only the parts related to the present disclosure are shown in the drawings.

[0024] Figure 1 It is a schematic structural diagram of a new type of electro-hydraulic servo valve structure;

[0025] Figure 2 It is a side view of a new type of electro-hydraulic servo valve structure;

[0026] Figure 3 It is a cross-sectional view of a new type of electro-hydraulic servo valve structure;

[0027] Figure 4 It is an exploded view of the main body mechanism of a new type of electro-hydraulic servo valve structure;

[0028] As Figures 1-4 shown, a new type of electro-hydraulic servo valve structure of the present disclosure may include components such as a main body mechanism and a cooling mechanism;

[0029] As Figures 1-4 shown, the main body mechanism includes an electrical box assembly 1, a valve body assembly 2, a spool 3, a valve sleeve baffle 4, a voice coil motor 5, a motor mover adapter plate 6, a spool adapter rod 7, and a motor stator fixing plate 8;

[0030] The electrical box assembly 1 is arranged at one end of the valve body assembly 2, the voice coil motor 5 is arranged at the other end of the valve body assembly 2, the motor mover adapter plate 6 is installed at the driving end of the voice coil motor 5, the spool adapter rod 7 is installed on the side of the motor mover adapter plate 6, the spool 3 is arranged at the end of the spool adapter rod 7 and is threadedly connected thereto, the other end of the spool 3 is connected to the input end of the valve body assembly 2, a valve sleeve is sleeved on the surface of the spool 3, the valve sleeve baffle 4 is arranged on the spool 3 and is on one side of the valve sleeve, and the motor stator fixing plate 8 is installed at the stator end of the voice coil motor 5;

[0031] During use, the operating voice coil motor 5 provides power for the valve body assembly 2 through the spool 3, the motor mover adapter plate 6, and the spool adapter rod 7, thereby controlling the operation of the valve body. At the same time, the voice coil motor 5 is a linear motor, and its linear motion characteristics are used to realize the linear motion of pushing the spool 3. The voice coil motor 5 can achieve fast response, high precision, low noise, and low cost. At the same time, the control of the voice coil motor 5 is relatively simple. The spool 3 and the valve sleeve baffle 4 adopt a two-stage type and are directly rigidly connected to the motor shaft of the voice coil motor 5, so that the motor shaft and the spool 3 form an integral body and move relative to each other. This can make the movement of the spool 3 more sensitive and the response faster. At the same time, the assembly is simple and the after-sales replacement is convenient.

[0032] As Figures 1-4As shown in the figure, the temperature reduction mechanism includes a spiral tube 9, a water tank 10, a liquid pump 11, a semiconductor refrigeration sheet 12, and a temperature sensor 13;

[0033] The water tank 10 is installed on the side of the valve body assembly 2. The spiral tube 9 is sleeved on the voice coil motor 5 and both ends extend into the water tank 10. The liquid pump 11 is installed at one end of the spiral tube 9 that extends into the water tank 10. The semiconductor refrigeration sheet 12 is installed on the inner wall of the water tank 10. The refrigerating end of the semiconductor refrigeration sheet 12 faces the inside of the water tank 10, and the heating end extends outside the water tank 10 and is installed with a heat sink. The temperature sensor 13 is installed on the side of the voice coil motor 5;

[0034] When the voice coil motor 5 operates for a long time, it will cause the temperature around the voice coil motor 5 to rise. The temperature sensor 13 monitors the temperature around the voice coil motor 5. If the surrounding temperature reaches its maximum operating temperature threshold, the temperature sensor 13 sends a signal to the controller. The controller controls the liquid pump 11 to operate to pump the cold water in the water tank 10 into the spiral tube 9. When the cold water passes through the spiral tube 9, it will absorb the heat around the voice coil motor 5, thus playing a role in reducing the temperature around the voice coil motor 5. After that, the water absorbs heat and becomes hot water, and then returns to the water tank 10 through the other end of the spiral tube 9. The semiconductor refrigeration sheet 12 can be used to refrigerate the hot water in the water tank 10 and turn it into cold water for the next cooling.

[0035] In the description of this specification, the description of reference terms such as "an embodiment / way", "some embodiments / ways", "example", "specific example", or "some examples" means that the specific features, structures, materials, or characteristics described in connection with the embodiment / way or example are included in at least one embodiment / way or example of this application. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment / way or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments / ways or examples. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments / ways or examples described in this specification and the features of different embodiments / ways or examples.

[0036] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of the features. In the description of this application, the meaning of "a plurality" is at least two, such as two, three, etc., unless otherwise specifically defined.

[0037] Those skilled in the art should understand that the above embodiments are merely for clearly explaining the present disclosure and are not intended to limit the scope of the present disclosure. For those skilled in the art, other changes or modifications can be made based on the above disclosure, and these changes or modifications are still within the scope of the present disclosure.

Claims

1. A new type of electro-hydraulic servo valve structure, characterized in that: include: The main body mechanism is the main structure of the servo valve and performs the work of the valve body; The main body mechanism comprises a valve body assembly (2), one end of the valve body assembly (2) is provided with a voice coil motor (5), the driving end of the voice coil motor (5) is installed with a motor mover adapter plate (6), the side center of the motor mover adapter plate (6) is installed with a valve core adapter rod (7), the end of the valve core adapter rod (7) is threadedly connected with a valve core (3), and the end of the valve core (3) is connected to the input end of the valve body assembly (2); A cooling mechanism is used to cool the internal components of the main mechanism.

2. A novel electro-hydraulic servo valve structure according to claim 1, characterized in that: The main body mechanism also includes a valve sleeve sleeved on the surface of the valve core (3), and a valve sleeve baffle (4) is arranged on one side of the valve sleeve on the valve core (3).

3. A novel electro-hydraulic servo valve structure according to claim 1, characterized in that: The other end of the valve body assembly (2) is provided with an electrical box assembly (1), and the stator end of the voice coil motor (5) is installed with a motor stator fixing plate (8).

4. A novel electro-hydraulic servo valve structure according to claim 3, characterized in that: The cooling mechanism comprises a water tank (10) installed on the side of the valve body assembly (2), and the surface of the voice coil motor (5) is covered with a spiral tube (9) with both ends extending into the water tank (10).

5. A novel electro-hydraulic servo valve structure according to claim 4, characterized in that: A liquid pump (11) is installed at one end of the spiral tube (9) extending into the water tank (10), and a semiconductor refrigeration plate (12) is installed on the inner wall of the water tank (10). The cooling end of the semiconductor refrigeration plate (12) faces the inside of the water tank (10), and the heating end extends to the outside of the water tank (10) and is installed with a heat sink.

6. A novel electro-hydraulic servo valve structure according to claim 4, characterized in that: A temperature sensor (13) is installed on the side of the voice coil motor (5).

Images