CN218644586U - High-frequency electro-hydraulic shock excitation valve - Google Patents

Abstract

The utility model discloses a high frequency electricity liquid excitation valve, including case, valve barrel and valve body, the case inside set up hollow oil passageway, case central authorities import and export along its radial interval setting a plurality of fluid, fluid imports and exports the left side and sets up a plurality of first hydraulic fluid ports along the radial interval of case, fluid imports and exports the right side and sets up a plurality of second hydraulic fluid ports along the radial interval of case, first hydraulic fluid port and the crisscross setting of second hydraulic fluid port, the valve barrel on correspond fluid import and export and set up a plurality of trompils, correspond first hydraulic fluid port and set up first oilhole, correspond second hydraulic fluid port and set up the second oilhole, first oilhole and second oilhole align the setting. The utility model provides a case is hollow structure, compares with current solid case, has lighter quality, and consequently inertia is littleer at the rotation in-process, has cancelled the circular bead structure of original valve moreover, makes the structure of whole valve body simpler, and spare part processing is more convenient, and fluid directly gets into in the valve core, and fluid flows more smoothly.

Description

High-frequency electro-hydraulic shock excitation valve

Technical Field

The utility model belongs to the technical field of the excitation valve, specifically be a high frequency electricity liquid excitation valve.

Background

At present, effective vibration detection cannot be achieved for some military products in China. The traditional electro-hydraulic vibration table is restricted by the frequency response characteristic of an electro-hydraulic servo valve, the working frequency of the traditional electro-hydraulic vibration table cannot reach a higher level, and a valve core in the existing electro-hydraulic vibration valve is of a solid structure, so that the valve core is large in mass and large in inertia in the process of rotating the valve core, so that a method which is usually adopted when vibration tests are carried out on important military equipment at present is to carry out a low-frequency vibration test on the electro-hydraulic vibration table, and a high-frequency vibration test is carried out on an electric vibration table. Therefore, it is necessary to develop a high-frequency electro-hydraulic shock excitation valve to make the vibration table reach a certain high frequency.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a high frequency electricity liquid excitation valve.

In order to achieve the above purpose, the utility model provides the following technical scheme:

the utility model provides a high frequency electricity liquid excitation valve, its includes case, valve barrel and valve body, the valve body on set up the business turn over oilhole with the pneumatic cylinder intercommunication, case and valve barrel are located the valve body, the valve barrel nestification is in the valve body hole, the case is in the valve barrel, the case inside set up hollow oil duct, case central authorities along its radial interval set up a plurality of fluid with the oil duct intercommunication import and export, fluid import and export the left side along the case radial interval set up a plurality of first hydraulic fluid ports with the oil duct intercommunication, fluid import and export the right side along the case radial interval set up a plurality of second hydraulic fluid ports with the oil duct intercommunication, first hydraulic fluid port and second hydraulic fluid port set up in a staggered arrangement, the valve barrel on correspond fluid import and export and set up a plurality of trompils, correspond first hydraulic fluid port and set up first oilhole, correspond the second hydraulic fluid port and set up the second oilhole, first oilhole and second oilhole align the setting.

Preferably, the number of the first oil flow ports and the number of the second oil flow ports are four, the number of the oil inlet and outlet is eight, and an included angle of 45 degrees is formed between connecting lines of two adjacent first oil flow ports and the second oil flow ports.

Preferably, the number of the openings is four, and the number of the first oil holes and the number of the second oil holes are four respectively.

Preferably, one end of the valve core is connected with the coupler through a spline, a rigid spring is arranged between the valve core and the coupler, and a piston is installed at the other end of the valve core.

Preferably, one end of the valve core is provided with an external spline, the coupling is provided with an internal spline, the external spline is inserted into the internal spline to form movable connection, and the rigid spring is installed in the internal spline.

Preferably, the end of the coupling is provided with a shaft hole for connecting with a motor.

Preferably, a motor cover for mounting the linear motor is fixed to the left side of the valve body.

Preferably, the valve body and the valve sleeve are correspondingly provided with screw holes, and the valve body is connected with the valve sleeve through bolts.

Compared with the prior art, this practical beneficial effect is:

1. the utility model provides a case is hollow structure, compares with current solid case, has lighter quality, and consequently rotation in-process inertia is littleer, has cancelled the circular bead structure of original valve moreover, makes the structure of whole valve body simpler, and spare part processing is more convenient, simultaneously, the utility model discloses in the fluid directly gets into the valve core, fluid flow is more logical.

2. The utility model discloses a control the crisscross hydraulic fluid port combination that sets up on hydraulic fluid port and the valve barrel about on the case, rotate the in-process at the case and form the crisscross valve port that opens and shuts, the high-frequency vibration of excitation valve can be realized to the velocity of flow through fluid in the governing valve.

3. The utility model discloses adopt spline movable connection between well case and the shaft coupling for the case other end can be connected with linear electric motor, removes about the drive case, thereby controls the opening size of valve port, and application scope is wider.

Drawings

FIG. 1 is a sectional view of the structure of the present invention;

FIG. 2 is a perspective view of the present invention;

fig. 3 is an exploded view of the present invention;

fig. 4 is a schematic structural view of the valve core of the present invention;

fig. 5 is a schematic structural view of the valve sleeve of the present invention;

fig. 6 is a schematic structural view of the coupling of the present invention;

fig. 7 is a mounting structure view of the linear motor cover of the present invention;

in the figure: 1. a valve core; 2. a valve housing; 3. a valve body; 4. a coupling; 5. a piston; 6. a linear motor cover; 7. a screw hole; 11. an oil inlet and an oil outlet; 12. a first oil flow port; 13. a second oil flow port; 14. an external spline; 15. an oil passage; 21. opening a hole; 22. a first oil hole; 23. a second oil hole; 31. an oil inlet and outlet; 32. a valve body bore; 33. screw thread mouth, 41, internal spline, 42, shaft hole.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is to be understood that the described embodiments are only some embodiments of the present invention, and not all embodiments. All other embodiments obtained by persons skilled in the art based on the embodiments in the present application without any creative work belong to the protection scope of the present application.

Referring to fig. 1 to 7, the present embodiment relates to a high-frequency electro-hydraulic shock excitation valve, which includes a valve core 1, a valve sleeve 2 and a valve body 3, wherein the valve body 3 and the valve sleeve 2 are respectively provided with a screw hole 7, and the valve body 3 and the valve sleeve 2 are connected by a bolt; the hydraulic cylinder valve is characterized in that an oil inlet and outlet hole 31 communicated with a hydraulic cylinder is formed in the valve body 3, the valve core 1 and the valve sleeve 2 are positioned in the valve body 3, the valve sleeve 2 is nested in a valve body hole 32, the valve core 1 is arranged in the valve sleeve 2, a hollow oil channel 15 is arranged in the valve core 1, eight oil inlets and outlets 11 communicated with the oil channel 15 are arranged in the center of the valve core 1 at intervals along the radial direction of the valve core 1, four first oil ports 12 communicated with the oil channel 15 are arranged on the left side of the oil inlets and outlets 11 along the radial direction of the valve core 1 at intervals, four second oil ports 13 communicated with the oil channel 15 are arranged on the right side of the oil inlets and outlets 11 along the radial direction of the valve core 1 at intervals, the first oil ports 12 and the second oil ports 13 are arranged in a staggered manner, and the connecting line of the two adjacent first oil ports 12 and the second oil ports 13 between the two first oil ports forms an included angle of 45 degrees, the four openings 21 are formed in the valve sleeve 2 corresponding to the oil inlet and outlet 11, the first oil hole 22 is formed in the valve sleeve corresponding to the first oil hole 12, the second oil hole 23 is formed in the valve sleeve corresponding to the second oil hole 13, the first oil hole 22 and the second oil hole 23 are aligned, namely, the first oil hole 22 in the left side of the valve sleeve 2 and the second oil hole 23 in the right side of the valve sleeve 2 are in the same straight line, the first oil hole 12 and the first oil hole 22 form a valve port in the left side of the electrohydraulic valve, the first oil hole 12 and the second oil hole 23 form a valve port in the right side of the electrohydraulic valve, in the rotation process of the valve core 1, the sizes of the valve ports in the left side and the right side of the electrohydraulic valve are changed in a cross mode, namely, when the area of the valve port in the left side is the largest, the area of the valve port in the right side is 0, and the area of the valve port in the right side is the largest in the same manner.

In the embodiment of this application, the right-hand member portion of case 1 sets up external splines 14, the left end sets up internal splines 41 on the shaft coupling 4, external splines 14 insert internal splines 41 and form movable connection, rigid spring installs in internal splines 41, the left end installation piston 5 of case in addition is as the oily passageway of end cap shutoff case 1, 3 left end fixed mounting of valve body have a linear electric motor cover 6, can install linear electric motor in the linear electric motor cover 6, case 1 can be connected with linear electric motor, linear electric motor drives case 1 and moves to the right, and the elasticity of accessible rigid spring resumes case 1 position, the right-hand member of shaft coupling 4 set up shaft hole 42, be connected through shaft hole 42 and servo motor's output, can drive case 1 and rotate.

In the embodiment of the application, after the valve core 1 is matched with the valve sleeve 2, the valve core is placed into the valve body 3, and the left side and the right side of the valve body 3 are both provided with threaded ports 33 which are used for fixing with the motor covers of the right side measurement servo alternating current motor and the left side linear stepping motor.

The principle of the utility model is as follows:

under the action of the servo alternating current motor, the areas of the left valve port and the right valve port are changed alternately, when the area of the right valve port is 0, oil flows back into the oil channel 15 from the oil inlet/outlet 11 in the middle of the valve core 1, and flows out of the oil channel 15 from the first oil flow port 12 on the left side, and vice versa.

When oil flows out from the oil outlet of the valve body 3 and enters one end of the interior of the hydraulic cylinder, the other end of the interior of the hydraulic cylinder is pressed by the oil, the oil is pressed back into the valve body 3, and the oil returns to the interior of the valve core 1 through the oil inlet and outlet 11 on the valve core 1.

Due to the action of the alternating current servo motor, the areas of the left and right side valve ports are changed alternately, so that the push rod of the hydraulic cylinder moves periodically. The left linear stepping motor and the rigid spring in the coupler are moved left and right to adjust the valve port area formed by the valve core 1 and the valve sleeve 2, namely the high-frequency vibration of the shock excitation valve is realized by adjusting the oil flow rate in the valve.

It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or scope of the present invention. Accordingly, the present embodiments are exemplary, and not limiting. The scope of the present application is defined by the appended claims, rather than the foregoing description, and all changes that come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims (8)

1. The utility model provides a high frequency electricity liquid excitation valve, its includes case, valve barrel and valve body, the valve body on set up the business turn over oilhole with the pneumatic cylinder intercommunication, case and valve barrel are located the valve body, the valve barrel nestification is in the valve body hole, the case is in the valve barrel, its characterized in that, case inside set up hollow oil passageway, case central authorities along its radial interval set up a plurality of fluid imports and exports with the oil passageway intercommunication, fluid imports and exports the left side and sets up a plurality of first hydraulic fluid mouths with the oil passageway intercommunication along the case radial interval, fluid imports and exports the right side and sets up a plurality of second hydraulic fluid mouths with the oil passageway intercommunication along the case radial interval, first hydraulic fluid mouth and the crisscross setting of second hydraulic fluid mouth, the valve barrel on correspond fluid import and export and set up a plurality of trompils, correspond first hydraulic fluid mouth and set up first oilhole, correspond second hydraulic fluid mouth and set up the second oilhole, first oilhole aligns the setting with the second oilhole.

2. The high-frequency electro-hydraulic shock excitation valve according to claim 1, wherein four first oil flow ports and four second oil flow ports are respectively arranged, eight oil flow ports are arranged, and an included angle of 45 degrees is formed between connecting lines of two adjacent first oil flow ports and two adjacent second oil flow ports.

3. The high frequency electro-hydraulic shock excitation valve of claim 2, wherein there are four openings, and four first oil holes and four second oil holes are provided.

4. The high-frequency electro-hydraulic shock excitation valve according to claim 1, wherein one end of the valve core is connected with a coupler through a spline, a rigid spring is arranged between the valve core and the coupler, and a piston is arranged at the other end of the valve core.

5. The high-frequency electro-hydraulic shock excitation valve according to claim 4, wherein an external spline is arranged at one end of the valve core, an internal spline is arranged on the coupler, the external spline is inserted into the internal spline to form movable connection, and the rigid spring is installed in the internal spline.

6. The high frequency electro-hydraulic shock excitation valve of claim 4, wherein the end of the coupling is provided with a shaft hole for connecting with a motor.

7. The high-frequency electro-hydraulic shock excitation valve according to claim 1, wherein a linear motor cover for mounting a linear motor is fixed to the left side of the valve body.

8. The high-frequency electro-hydraulic shock excitation valve according to claim 1, wherein the valve body and the valve sleeve are respectively provided with a screw hole correspondingly, and the valve body is connected with the valve sleeve through a bolt.

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