KR101051301B1 - Drain Union Removable Device of Servo Valve - Google Patents

Abstract

The present invention relates to a drain union detachable device for a servovalve, comprising: a lower plate on which a servovalve in which an insertion hole for inserting a drain union is formed is seated; A first side plate coupled to one end of the lower plate; A second side plate coupled to the other end of the lower plate; A cover plate rotatably coupled to the first side plate and having a guide hole formed therein; A fixing part for fixing the cover plate to the second side plate; A moving unit movably coupled to the guide hole; And an inlet connected to the drain union through a moving part.

In the drain union detachable device of the servo valve according to the present invention, the servo valve is fixed to the lower plate to enable stable operation of the drain union.

Servo Valve, Drain Union, Vise, Screw

Description

Drain Union Removable Device for Servo Valve {DISASSEMBLING AND ASSEMBLING DEVICE OF DRAIN UNION FOR SERVO VALVE}

The present invention relates to a detachable device, and more particularly, to a drain union detachable device of a servo valve for stably fixing a servo valve to stably separate or assemble a drain union.

In general, the servo valve (Servo valve) used in the steel industry is used in electric automation hydraulic equipment for adjusting the gap between the upper and lower work roll of the rolling mill. Such a servovalve controls pressure or flow rate by a mechanical or electrical input signal, and controls the flow rate and the hydraulic pressure of the fluid supplied to the hydraulic cylinder in the process of processing, conveying and positioning the workpiece.

According to the conventional servo valve, the main valve (Main valve) used to control the hydraulic cylinder, and the pilot valve (Pilot valve) for controlling the main valve is provided, and the hydraulic pressure supplied to the hydraulic cylinder according to the magnitude of the input current It is configured to control the overflow rate proportionally to obtain the desired operating characteristics.

According to the conventional servo valve, a pilot valve is positioned on an upper side of the main valve, a solenoid is disposed on an upper side thereof, and a position of a main spool in the main valve is detected on one side of the main valve. A position detector for disposing is arranged.

On the other hand, the inside of the main valve is provided with a bushing (Bushing) formed with a hole forming a flow path is fixed. The main spool is provided inside the bushing, and the main spool moves from side to side within the bushing to select the flow direction. This main spool is engaged with the drain union inside the bushing.

The drain union is inserted through an insertion hole formed perpendicularly to the arrangement direction of the main spool from the outside of the main valve to engage in a direction perpendicular to the main spool. Such a drain union has a concave end portion which is in contact with the main spool and engages with the main spool, thereby limiting the movement area of the main spool.

In the conventional servo valve, since the drain union is forcibly inserted into the insertion hole, it is not only difficult to separate or reassemble the drain union from the main valve for repair in case of failure, but also damage to the drain union or bushing in the process. There is a big problem.

In addition, since the conventional servo valve is not fixed, there is a problem that causes a safety accident that the operator falls over during the drain union withdrawal process.

Therefore, there is a need for improvement.

The present invention has been made to solve the above problems, and an object thereof is to provide a drain union disassembly and assembly apparatus of a servo valve that can accurately and safely perform assembly and disassembly without damaging parts.

In order to achieve the above object, the present invention includes a lower plate seating the servo valve is formed insertion hole for inserting the drain union; A first side plate coupled to one end of the lower plate; A second side plate coupled to the other end of the lower plate; A cover plate rotatably coupled to the first side plate and having a guide hole formed therein; A fixing part to fix the cover plate to the second side plate; A moving unit movably coupled to the guide hole; And it provides a drain union detachable device of the servo valve comprising a lead portion passing through the moving portion and coupled to the drain union.

The fixing unit is provided in the second side plate assembly; A fixing body rotatably coupled to the assembly and inserted into a cover groove formed in the cover plate; And a pressurized body coupled to the fixed body to pressurize the cover plate.

A thread is formed on an outer circumferential surface of the fixture, and the press body is screwed to the fixture.

The bottom surface of the lower plate is characterized in that the fastening portion is fastened to the vise.

The insertion protrusion inserted into the insertion groove formed on the bottom of the servo valve is characterized in that the protruding formed on the lower plate.

The moving part may be screwed to the guide hole.

The lead portion penetrates the through hole provided in the center portion of the moving part; A screw protrusion provided at one end of the through body and screwed to the drain union; And a locking protrusion provided at the other end of the through body and caught by the moving part.

The through body is characterized in that the screw is coupled to the through hole.

As described above, the drain union detachable device of the servo valve according to the present invention is not only fixed to the main valve of the servo valve is installed on the lower plate, but also the fastening portion of the lower plate is fixed to the vise, thereby enabling the stable detachment of the drain union. .

In addition, the drain union detachable device of the servo valve according to the present invention, the insertion protrusion provided in the lower plate is inserted into the insertion groove of the main valve, thereby guiding the fastening hole of the main valve and the fastening hole of the lower plate in a straight line to guide the main valve. There is an effect of improving the assembly between the lower plate and.

Hereinafter, with reference to the accompanying drawings will be described an embodiment of the drain union detachable device of the servo valve according to the present invention.

In this process, the thickness of the lines or the size of the components shown in the drawings may be exaggerated for clarity and convenience of description.

In addition, terms to be described later are terms defined in consideration of functions in the present invention, which may vary according to a user's or operator's intention or custom.

Therefore, definitions of these terms should be made based on the contents throughout the specification.

1 is a perspective view of the drain union detachable device in a disassembled state of the servo valve according to an embodiment of the present invention, Figure 2 is a drain union detachable device in a state in which the servo valve is installed according to an embodiment of the present invention Perspective view.

3 is a view showing a state in which the drain union is not installed in the servo valve according to an embodiment of the present invention, Figure 4 is a view showing a state in which the drain union is installed in the servo valve according to an embodiment of the present invention to be.

1 to 4, the drain union detachable device 100 of the servo valve according to an embodiment of the present invention includes a first side plate 10, a second side plate 20, a lower plate 30, and a cover plate ( 40), the fixing part 50, the moving part 60, and the inlet part 70 are provided, and the drain union 116 is attached and detached in the state which fixed the servovalve.

In an embodiment of the present invention, the part fixed to the lower plate 30 corresponds to the main valve 110 among the configurations of the servovalve, and the pilot valve, the solenoid, and the position detecting unit except the main valve 110 among the following configurations of the servovalve. Note that the illustration of the back is omitted.

The main valve 110 is provided with a bushing 112 having a hole forming a flow path, and a main spool 114 is provided in the bushing 112 to select a flow path direction while moving from side to side within the bushing 112. do. The main spool 114 is engaged with the drain union 116 inside the bushing 112.

One side of the drain union 116 is formed to be concave to correspond to the outer circumferential surface of the main spool 114 is engaged with the main spool 114, the female screw is formed on the other side. In addition, an insertion hole 118 through which the drain union 116 is inserted is formed in the main valve 110. Reference numeral 117, which has not been described, indicates a sealing member provided on the side of the drain union 116.

The main valve 110 is seated on an upper side of the lower plate 30, and the first side plate 10 and the second side plate 20 are coupled to both ends of the lower plate 30, respectively.

The cover plate 40 is rotatably coupled to the first side plate 10 and has a guide hole 41 penetrating through a cross section. One end of the cover plate 40 is rotatably coupled to the first side plate 10, and the other end is seated on the upper side of the second side plate 20.

In one embodiment of the invention, the first side plate 10 is formed with an upper protrusion 12 protruding upward from the center portion, the coupling hole 11 is formed on both sides of the upper protrusion 12.

 And, the cover plate 40 is provided with the contact portion 42 located on both sides of the upper projection 12, the rotary coupling member 43 is coupled to the coupling hole 11 through the contact portion 42, The cover plate 40 is rotatably coupled to the first side plate 10.

When the cover plate 40 is seated on the upper side of the second side plate 20, the guide hole 41 is positioned in line with the insertion hole 118 of the main valve 110.

The fixing part 50 fixes the cover plate 40 to the second side plate 20, and the moving part 60 is movably coupled to the guide hole 41.

The inlet part 70 penetrates the moving part 60 and is inserted into the insertion hole 118 to be combined with the drain union 116.

The fixing part 50 according to the embodiment of the present invention is provided with a combination 51, a fixing body 52, and a pressing body 53.

The coupling body 51 is fixed to penetrate both sides of the second side plate 20, a part of which is located in the second side hole 25 formed on the second side plate 20.

The fixed body 52 is rotatably coupled to one end of the coupling body 51. In one embodiment of the present invention, one end of the fixing body 52 may have a ring shape surrounding the outer circumferential surface of the assembly 51. The fixing body 52 is coupled to the coupling body 51 and inserted into the cover groove 45 formed in the cover plate 40 when rotated upward.

The pressing body 53 is coupled to the fixed body 52 and pressurizes the cover plate 40. In one embodiment of the present invention, a screw thread is formed on the outer circumferential surface of the fixing body 52, and the pressing body 53 presses the upper side of the cover plate 40 while being screwed to the fixing body 52. This press body 53 may be a nut having a thread inside.

The fastening part 33 is provided at the bottom of the lower plate 30. The fastening part 33 protrudes from the bottom of the lower plate 30 and is fastened to the vise 130 which is a means for fixing the part. The fastening part 33 may be integrally formed with the lower plate 30 and may be combined with the lower plate 30 as a separate component. By the vise 130 to hold the fastening portion 33, the shaking of the lower plate 30 in the working process is prevented.

A fastening groove 121 is formed on a bottom surface of the main valve 110 according to an embodiment of the present invention, and a fastening hole 31 corresponding to the fastening groove 121 is formed in the lower plate 30. The fastening hole 31 is positioned below the fastening groove 121 and the fastening body 131 is fastened to the fastening groove 121 through the fastening hole 31.

On the other hand, the insertion groove 122 is formed on the bottom surface of the main valve 110, the insertion protrusion 32 is inserted into the insertion groove 122 is formed in the lower plate 30 protruding. This configuration guides the fastening groove 121 of the main valve 110 and the fastening hole 31 of the lower plate 30 to be positioned on a vertical line.

The moving part 60 according to the exemplary embodiment of the present invention is screwed to the guide hole 41. That is, the moving part 60 has a bolt shape, and a thread is formed in the guide hole 41.

Inlet portion 70 according to an embodiment of the present invention is provided with a through body 71, a screw projection 72 and a locking projection (73).

The through body 71 penetrates the through hole 61 formed in the center of the moving part 60. The penetrating member 71 is formed longer than the moving portion 60 so as to penetrate or move the drain union 116 through the moving portion 60.

The screw protrusion 72 is provided at one end of the through body 71. The screw protrusion 72 has a thread formed on the outer circumferential surface thereof, and a female thread corresponding to the drain union 116 is formed.

The locking protrusion 73 is provided at the other end of the through body 71 and has a larger cross-sectional area than that of the through hole 61. Unevenness is formed on the outer circumferential surface of the locking projection 73 to enable the rotation of the inlet portion 70 using a tool or by a worker's hand.

Meanwhile, the through body 71 may be screwed into the through hole 61. To this end, a thread is formed on the outer circumferential surface of the through body 71, and a thread corresponding to the through hole 61 is formed.

Referring to the operation of the drain union detachable device of the servo valve according to an embodiment of the present invention.

In the case of installing the drain union 116, when the insertion protrusion 32 of the lower plate 30 is inserted into the insertion groove 122 of the main valve 110, the fastening groove 121 and the fastening hole 31 are formed. Arranged in a straight line. At this time, the main valve 110 is fixed to the lower plate 30 using the fastener 131.

Then, the cover plate 40 is rotated and one end thereof is seated on the second side plate 20, and the fixing body 52 is rotated to be inserted into the cover groove 45. Then, the pressing body 53 is screwed with the fixed body 52, and the pressing body 53 is tightened to press the cover plate 40.

Meanwhile, the vise 130 is engaged with the fastening portion 33 of the lower plate 30 to fix the lower plate 30.

In the above state, the through body 71 of the lead portion 70 passes through the through hole 61 of the moving portion 60, and the screw protrusion 72 and the drain union 116 are screwed together.

Then, the moving unit 60 is located in the guide hole 41 and rotated in one direction (see FIG. 3). By this rotation, the moving part 130 is moved in the main valve 110 direction, and the drain union 116 coupled to the inlet part 70 is moved toward the main spool 114 through the insertion hole 118. .

When the drain union 116 is engaged with the main spool 114 according to the above-described process (see FIG. 4), the inlet part 70 is rotated in the other direction to separate the drain union 116 and then the moving part 60. ) Is rotated in the other direction to separate from the guide hole (41).

When the drain union 116 is removed, when the insertion protrusion 32 of the lower plate 30 is inserted into the insertion groove 122 of the main valve 110, the fastening groove 121 and the fastening hole 31 are straight. Is placed on the bed. At this time, the main valve 110 is fixed to the lower plate 30 using the fastener 131.

Then, the cover plate 40 is rotated and one end thereof is seated on the second side plate 20, and the fixing body 52 is rotated to be inserted into the cover groove 45. Then, the pressing body 53 is screwed with the fixed body 52, and the pressing body 53 is tightened to press the cover plate 40.

Meanwhile, the vise 130 is engaged with the fastening portion 33 of the lower plate 30 to fix the lower plate 30.

In the above state, the penetrating member 71 of the lead portion 70 passes through the through hole 61 of the moving portion 60, and the moving portion 130 is rotated in one direction in the guide hole 41. By this rotation, the moving part 130 is moved in the direction of the main valve 110, and the inlet part 70 is close to the drain union 116 through the insertion hole 118.

The operator rotates the inlet portion 70 in one direction so that the threaded projection 72 of the inlet portion 70 close to the drain union 116 is screwed with the drain union 116 (see FIG. 4).

Then, when the moving part 60 is rotated in the other direction, the moving part 60 moves away from the main valve 110. At this time, when the inlet portion 70 is held so as not to rotate in the other direction, the inlet portion 70 is linearly moved in a screw-coupled state with the drain union 116 to separate the drain union 116 and the main spool 114. Let's do it.

When the moving part 60 is continuously rotated according to the above process, the moving part 60 is separated from the guide hole 41 as shown in FIG. 3, and the drain union 116 is coupled to the inlet part 70. Is discharged to the outside.

Although the present invention has been described with reference to the embodiments shown in the drawings, this is merely exemplary, and those skilled in the art to which the art belongs can make various modifications and other equivalent embodiments therefrom. I will understand.

Therefore, the true technical protection scope of the present invention will be defined by the claims below.

1 is a perspective view of a drain union detachable device in a disassembled state of a servo valve according to an exemplary embodiment of the present invention.

Figure 2 is a perspective view of the drain union detachable device in a servo valve installed state according to an embodiment of the present invention.

3 is a view showing a state in which the drain union is not installed in the servo valve according to an embodiment of the present invention.

4 is a view showing a drain union is installed in the servo valve according to an embodiment of the present invention.

* Description of the symbols for the main parts of the drawings *

10: first side plate 20: second side plate

30: lower plate 40: cover plate

50: fixed part 60: moving part

70: inlet

Claims (8)

A lower plate on which a servovalve is formed, in which an insertion hole for inserting a drain union is formed; A first side plate coupled to one end of the lower plate; A second side plate coupled to the other end of the lower plate; A cover plate rotatably coupled to the first side plate and having a guide hole formed therein; A fixing part to fix the cover plate to the second side plate; A moving unit movably coupled to the guide hole; And A drain union detachable device of a servo valve, characterized in that it comprises an inlet portion penetrating the moving portion and coupled with the drain union. The method of claim 1, wherein the fixing portion A combination provided in the second side plate; A fixing body rotatably coupled to the assembly and inserted into a cover groove formed in the cover plate; And And a pressurized body coupled to the fixed body to pressurize the cover plate. 3. The method of claim 2, A thread is formed on the outer circumferential surface of the fixture, The pressurized body is a drain union detachable device of the servo valve, characterized in that screwed to the fixed body. The method of claim 1, Drain union detachable device of the servo valve, characterized in that the bottom surface of the lower plate is provided with a fastening portion fastened to the vise. The method of claim 1, The drain union of the servo valve, characterized in that the insertion protrusion is inserted into the insertion groove formed in the bottom surface of the servo valve protruding from the lower plate. The method of claim 1, The moving unit of the drain union detachable device of the servo valve, characterized in that screwed to the guide hole. The method of claim 1, wherein the lead portion A through body penetrating a through hole provided in a central portion of the moving part; A screw protrusion provided at one end of the through body and screwed to the drain union; And The other end of the through-body is provided with a drain union detachable device of the servo valve, characterized in that it comprises a locking projection to the moving portion. The method of claim 7, wherein The through body of the drain union detachable device of the servo valve, characterized in that screwed to the through hole.

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