KR20100026545A - Oil pressure control valve with valve guide - Google Patents

Oil pressure control valve with valve guide Download PDF

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Publication number
KR20100026545A
KR20100026545A KR1020080085582A KR20080085582A KR20100026545A KR 20100026545 A KR20100026545 A KR 20100026545A KR 1020080085582 A KR1020080085582 A KR 1020080085582A KR 20080085582 A KR20080085582 A KR 20080085582A KR 20100026545 A KR20100026545 A KR 20100026545A
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KR
South Korea
Prior art keywords
valve
hydraulic
guide
communication hole
breaker
Prior art date
Application number
KR1020080085582A
Other languages
Korean (ko)
Inventor
노경열
Original Assignee
라온테크 주식회사
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Publication date
Application filed by 라온테크 주식회사 filed Critical 라온테크 주식회사
Priority to KR1020080085582A priority Critical patent/KR20100026545A/en
Publication of KR20100026545A publication Critical patent/KR20100026545A/en

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    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F3/00—Dredgers; Soil-shifting machines
    • E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
    • E02F3/96—Dredgers; Soil-shifting machines mechanically-driven with arrangements for alternate or simultaneous use of different digging elements
    • E02F3/966—Dredgers; Soil-shifting machines mechanically-driven with arrangements for alternate or simultaneous use of different digging elements of hammer-type tools
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
    • E02F9/20—Drives; Control devices
    • E02F9/22—Hydraulic or pneumatic drives
    • E02F9/2264—Arrangements or adaptations of elements for hydraulic drives
    • E02F9/2267—Valves or distributors

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Mining & Mineral Resources (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Multiple-Way Valves (AREA)

Abstract

The present invention relates to a hydraulic control valve for a hydraulic breaker having a valve guide, and more particularly, to improve the configuration of the valve valve by separately configuring a ring-shaped valve guide to serve as a guide of the valve to provide a somewhat free valve guide. It relates to a hydraulic breaker for a hydraulic breaker having a valve guide that can have a guide to reduce the failure rate due to heat distortion and heat deformation.

Hydraulic control valve for hydraulic breaker provided with a valve guide of the present invention,

In the hydraulic control valve of the hydraulic breaker,

The valve has an internal space capable of lifting up and down, and has a first communication hole 110, a second communication hole 120, a third communication hole 130, and a fourth communication hole 140 from below. A valve box 100 formed in order;

A valve 300 in which a valve step groove 310 and a plurality of valve holes 320 are formed;

An upper valve cover (400) configured at an upper side of the valve and configured to pass a plurality of upper valve cover holes (410) on one side to pass hydraulic pressure through a fourth communication hole formed in the valve box;

It consists of an inner diameter that can be fitted to the outer diameter of the valve to guide the vertical lifting operation of the valve, a plurality of hydraulic passage holes for passing the hydraulic pressure when the hydraulic pressure is applied through the first communication hole of the valve box on one side A valve guide 500 on which 510 is formed;

And a lower valve cover 600 configured at a lower side of the valve guide.

Through the present invention, by separately configuring a ring-shaped valve guide that serves as a guide of the valve, the valve guide may have some freedom, thereby providing an effect of eliminating a defective rate due to heat distortion and heat deformation.

Description

Oil pressure control valve with valve guide.

The present invention relates to a hydraulic control valve for a hydraulic breaker having a valve guide, and more particularly, to improve the configuration of the valve valve by separately configuring a ring-shaped valve guide to serve as a guide of the valve to provide a somewhat free valve guide. It relates to a hydraulic breaker for a hydraulic breaker having a valve guide that can have a guide to reduce the failure rate due to heat distortion and heat deformation.

As shown in the cross-sectional view of FIG. 1, the hydraulic breaker includes a suitable hydraulic passage 210a, a cylinder 210 having an appropriate hydraulic space provided on an inner circumferential surface thereof, and a piston having a plurality of stepped parts inside the cylinder, the hydraulic pressure of which is formed ( 220), the control valve 230 for supplying / blocking the hydraulic passage and the hydraulic space provided on the side of the cylinder, the compression chamber 240 provided on the upper end of the cylinder, connected to the lower end of the cylinder It consists of a chisel to deliver the impact of the piston to the rock or ground.

2 and 3 are enlarged cross-sectional view showing an operating state of a conventional control valve 230, Figure 4 is a perspective view showing a conventional valve side.

As shown in the drawing, a conventional hydraulic breaker includes a cylinder 210 provided with a hydraulic passage 210a and upper and lower hydraulic chambers 212 and 213,

A piston 220 embedded in the cylinder and having a plurality of stepped parts to act on hydraulic pressure;

A control valve 230 provided at a side of the cylinder to supply / block hydraulic pressure to the hydraulic passage 210a and the hydraulic chamber 212;

It consists of a compression chamber 240 provided on the upper end of the cylinder.

The valve valve 210b is formed on the hydraulic inlet flow path 211 at one side of the cylinder 210, and the valve valve sleeve 250 and the valve plug 270 are embedded therein. ,

The valve valve 260 is configured to reciprocate in the valve sleeve.

That is, the valve side sleeve 250 has an internal space in which the valve side 260 can be operated up and down, but the hydraulic pressure line is in communication with the upper hydraulic chamber 212 of the cylinder 210 from the bottom The port 214, the drain port 215 of the interruption, the valve changeover port 216, and the buffer drain port 218 are formed in this order.

In addition, the valve plug 270 is formed to serve as a guide as the inner diameter 271 to which the upper end of the outer diameter of the valve side 260 can be fitted.

In addition, the valve side 260 is formed to form a round jaw so that the hydraulic pressure connected from the respective ports to the outer diameter, the inner diameter is formed in a straight line without changing the cross section, the radial groove 264 on the top surface It is formed.

Referring to the operating state of the prior art configured as described above, when the hydraulic oil is raised into the hydraulic inlet flow path 211 of the cylinder 210, as shown in Figure 2, the hydraulic pressure acts on the upper surface 265 of the valve valve 260 As a result, the valve valve 260 maintains the lowered state as shown in FIG. 2.

While in this state, when the hydraulic oil is continuously supplied to the lower hydraulic chamber 213 of the cylinder 210 through the hydraulic inflow passage 211 and the piston 220 ascends, the valve completion port ( Pressure oil acts through the bar 216, which acts on the valve switching jaw 261 to raise the valve valve 260.

As shown in FIG. 3, when the valve side 260 is raised, the lower end of the valve side 260 opens the striking hydraulic line port 214, so that the pressure oil acts on the upper hydraulic chamber 212 of the cylinder 210. Thus, the piston 220 is lowered to allow the chisel to strike.

Subsequently, the pressure oil after the impact is partially discharged to the hydraulic discharge passage 219 through the drain port 215 of the suspension, and when some of the hydraulic pressure is discharged, it acts on the valve switching jaw 261 of the valve valve 260. Not only the hydraulic pressure is removed but also the pressure oil introduced into the inner diameter of the valve side 260 acts on the radial groove 264 formed on the upper end surface, the valve side 260 is lowered again to return to the original position, The above operation will be repeated.

In operation of the valve valve 260 as described above, in the present invention, when the pressure oil rises through the central hole of the valve valve 260, it can operate flexibly without changing the cross-sectional area in the inner diameter of the valve valve 260. Since the inner diameter of the valve plug 270 is made to fit with the outer diameter of the upper end of the valve side 260, this part is to exhibit the guide function.

However, in the above-described conventional technique, since the entire valve edge performs up and down repetitive movement, the friction range generated with the valve edge sleeve is widened, thereby causing damage to the valve edge sleeve and thermal deformation at the same time, thereby increasing the defective rate. Had to have.

Accordingly, the present invention has been made to solve the above conventional problems,

It is an object of the present invention to separately configure the ring-shaped valve guide to serve as a guide of the valve to have a somewhat free valve guide to remove the defective rate caused by heat distortion and heat deformation.

In order to achieve the problem to be solved by the present invention,

Hydraulic control valve for hydraulic breaker provided with a valve guide of the present invention,

In the hydraulic control valve of the hydraulic breaker,

The valve has an internal space capable of lifting up and down, and has a first communication hole 110, a second communication hole 120, a third communication hole 130, and a fourth communication hole 140 from below. A valve box 100 formed in order;

A valve 300 in which a valve step groove 310 and a plurality of valve holes 320 are formed;

An upper valve cover (400) configured at an upper side of the valve and configured to pass a plurality of upper valve cover holes (410) on one side to pass hydraulic pressure through a fourth communication hole formed in the valve box;

It consists of an inner diameter that can be fitted to the outer diameter of the valve to guide the vertical lifting operation of the valve, a plurality of hydraulic passage holes for passing the hydraulic pressure when the hydraulic pressure is applied through the first communication hole of the valve box on one side A valve guide 500 on which 510 is formed;

And a lower valve cover 600 configured at a lower side of the valve guide.

Hydraulic control valve for hydraulic breaker with a valve guide according to the invention,

By constituting the ring-shaped valve guide that serves as a guide of the valve separately, the valve guide may have some freedom, thereby providing an effect of removing a defective rate due to heat distortion and heat deformation.

Hydraulic control valve for a hydraulic breaker having a valve guide according to an embodiment of the present invention for achieving the above object,

In the hydraulic control valve of the hydraulic breaker,

The valve has an internal space capable of lifting up and down, and has a first communication hole 110, a second communication hole 120, a third communication hole 130, and a fourth communication hole 140 from below. A valve box 100 formed in order;

A valve 300 in which a valve step groove 310 and a plurality of valve holes 320 are formed;

An upper valve cover (400) configured at an upper side of the valve and configured to pass a plurality of upper valve cover holes (410) on one side to pass hydraulic pressure through a fourth communication hole formed in the valve box;

It consists of an inner diameter that can be fitted to the outer diameter of the valve to guide the vertical lifting operation of the valve, a plurality of hydraulic passage holes for passing the hydraulic pressure when the hydraulic pressure is applied through the first communication hole of the valve box on one side A valve guide 500 on which 510 is formed;

And a lower valve cover 600 configured at a lower side of the valve guide.

At this time, when the hydraulic pressure flows into the first communication hole 110, the hydraulic pressure acts on the valve step groove through the hydraulic passage hole to raise the valve to form a hydraulic passage between the third communication hole and the valve hole. .

At this time, the outer valve outer diameter of the valve stepped groove 310 is characterized in that larger than the outer valve outer diameter.

At this time, the valve guide 500,

It is characterized by being formed in a ring shape and separated from the valve.

Hereinafter, with reference to the accompanying drawings will be described in detail a preferred embodiment of the hydraulic control valve for a hydraulic breaker having a valve guide of the present invention.

5 is a perspective view of a hydraulic control valve for a hydraulic breaker having a valve guide according to an embodiment of the present invention.

6 is an exploded perspective view of a hydraulic control valve for a hydraulic breaker having a valve guide according to an embodiment of the present invention.

7 to 8 is an enlarged cross-sectional view showing an operating state of the hydraulic control valve for a hydraulic breaker having a valve guide according to an embodiment of the present invention.

As shown in Figures 5 to 6, the hydraulic control valve for a hydraulic breaker with a valve guide of the present invention,

The valve has an internal space capable of lifting up and down, and has a first communication hole 110, a second communication hole 120, a third communication hole 130, and a fourth communication hole 140 from below. A valve box 100 formed in order;

A valve 300 in which a valve step groove 310 and a plurality of valve holes 320 are formed;

An upper valve cover (400) configured at an upper side of the valve and configured to pass a plurality of upper valve cover holes (410) on one side to pass hydraulic pressure through a fourth communication hole formed in the valve box;

It consists of an inner diameter that can be fitted to the outer diameter of the valve to guide the vertical lifting operation of the valve, a plurality of hydraulic passage holes for passing the hydraulic pressure when the hydraulic pressure is applied through the first communication hole of the valve box on one side A valve guide 500 on which 510 is formed;

And a lower valve cover 600 configured at a lower side of the valve guide.

At this time, when the hydraulic pressure flows into the first communication hole 110, the hydraulic pressure acts on the valve step groove through the hydraulic passage hole to raise the valve to form a hydraulic flow path between the third communication hole and the valve hole. do.

At this time, the upper valve outer diameter of the valve step groove 310 is formed to be larger than the lower valve outer diameter to facilitate the ascension of the valve.

At this time, the valve guide 500 is formed in a ring shape, characterized in that separated from the valve, to be described in more detail as follows.

Prior to the description of the configuration of the present invention, the prior art proposed in the present invention is a built-in type of the built-in control valve in the cylinder, but the present invention is an external type control valve, the components constituting the control valve is It can be seen that they are different from each other.

The valve guide configured in the conventional control valve is inevitably caused by deformation and pressure due to heat, so the failure rate is considerably high, and manufacturers have to increase the burden of replacing the device.

However, when the valve guide is separated as in the present invention, the pressure distribution is smoothed so as not to affect the valve, so that the valve can be stably operated to prevent distortion due to thermal deformation and pressure.

In other words, since the valve guide is configured in a ring shape, the valve guide can have some freedom, so that the influence from distortion and heat deformation is reduced.

Each component will be described with reference to FIGS. 5 to 6.

The valve box 100 has an internal space in which the valve can be moved up and down, the first communication hole 110, the second communication hole 120, the third communication hole 130 from the lower side, The fourth communication hole 140 is formed in order, and a valve and a valve guide are formed therein.

The valve 300 has a valve step groove 310 and a plurality of valve holes 320 formed therein, and a space is formed to allow oil to pass therethrough.

The upper valve cover 400 is configured on the upper side of the valve, and a plurality of upper valve cover holes 410 are formed on one side to allow hydraulic pressure to pass through the fourth communication hole formed in the valve box.

The valve guide 500 is configured as an inner diameter to which the outer diameter of the valve can be fitted to guide the up and down operation of the valve, and when the hydraulic pressure is acted through the first communication hole of the valve box on one side, the hydraulic pressure passes. A plurality of hydraulic passage holes 510 to be formed are formed, and the lower valve cover 600 is formed under the valve guide.

Next, with reference to Figures 7 to 8 will be described in detail the operating state of the hydraulic control valve for a hydraulic breaker having a valve guide according to an embodiment of the present invention.

Cylinder 210 is provided with a hydraulic chamber connected to the control valve of the present invention,

It is built in the cylinder, the piston 220 is formed with a plurality of stepped parts to act on the hydraulic pressure, it will be described in connection with the cylinder and the piston.

When the hydraulic pressure raising the piston 220 flows into the first communication hole 110 through the flow path inside the cylinder 210, the hydraulic pressure passes through the hydraulic passage hole 510 of the valve guide 500, and the valve step groove ( High pressure is applied to 310 to cause valve 300 to rise upward.

At this time, the oil in the upper hydraulic chamber configured at the upper end of the piston is discharged to the second communication hole 120 through the center of the valve (300).

In addition, when the valve is raised, the third communication hole 130 and the valve hole 320 form a flow path, and a large amount of high-pressure oil in the air passes through the valve hole 320 through the third communication hole 130 and is upward. It is discharged to the fourth communication hole 140 through the upper valve cover hole 410 of the valve cover 400 to act on the top of the piston to lower the piston.

Through the above configuration and operation, the valve guide may have some freedom, thereby providing an effect of removing a defective rate due to heat distortion and thermal deformation.

Those skilled in the art to which the present invention pertains as described above may understand that the present invention may be implemented in other specific forms without changing the technical spirit or essential features of the present invention. Therefore, the above-described embodiments are to be understood as illustrative in all respects and not restrictive.

The scope of the invention is indicated by the following claims rather than the above description, and all changes or modifications derived from the meaning and scope of the claims and their equivalents should be construed as being included in the scope of the invention. do.

Hydraulic control valve for hydraulic breaker with a valve guide according to the invention,

The valve guide can be somewhat free by separately configuring the ring-shaped valve guide, which serves as a guide for the valve, thereby providing the effect of eliminating the defective rate due to heat distortion and thermal deformation. It will be widely used.

1 is a cross-sectional view of a conventional hydraulic breaker.

2 to 3 is an enlarged cross-sectional view showing an operating state of a conventional control valve.

4 is a perspective view showing a conventional valve valve.

5 is a perspective view of a hydraulic control valve for a hydraulic breaker having a valve guide according to an embodiment of the present invention.

6 is an exploded perspective view of a hydraulic control valve for a hydraulic breaker having a valve guide according to an embodiment of the present invention.

7 to 8 is an enlarged cross-sectional view showing an operating state of the hydraulic control valve for a hydraulic breaker having a valve guide according to an embodiment of the present invention.

Explanation of symbols on the main parts of the drawings

100: valve box

110: first communication hole

120: second communication hole

130: third communication hole

140: fourth communication hole

300: valve

310: valve step groove

320: valve hole

400: Upper valve cover

410: Upper valve cover hole

500: Valve guide

510: hydraulic passage hole

600: Lower valve cover

Claims (4)

In the hydraulic control valve of the hydraulic breaker, The valve has an internal space capable of lifting up and down, and has a first communication hole 110, a second communication hole 120, a third communication hole 130, and a fourth communication hole 140 from below. A valve box 100 formed in order; A valve 300 in which a valve step groove 310 and a plurality of valve holes 320 are formed; An upper valve cover (400) configured at an upper side of the valve and configured to pass a plurality of upper valve cover holes (410) on one side to pass hydraulic pressure through a fourth communication hole formed in the valve box; It consists of an inner diameter that can be fitted to the outer diameter of the valve to guide the vertical lifting operation of the valve, a plurality of hydraulic passage holes for passing the hydraulic pressure when the hydraulic pressure is applied through the first communication hole of the valve box on one side A valve guide 500 on which 510 is formed; A hydraulic control valve for a hydraulic breaker having a valve guide, characterized in that it comprises a; lower valve cover (600) configured on the lower side of the valve guide. The method of claim 1, When the hydraulic pressure flows into the first communication hole 110, the hydraulic pressure acts on the valve step groove through the hydraulic passage hole to raise the valve to form a hydraulic passage between the third communication hole and the valve hole. Hydraulic control valve for hydraulic breaker provided with. The method of claim 1, Hydraulic valve for hydraulic breaker with a valve guide, characterized in that the outer valve outer diameter of the valve step groove 310 is larger than the lower valve outer diameter. The method of claim 1, The valve guide 500, A hydraulic control valve for a hydraulic breaker having a valve guide, characterized in that formed in a ring shape and separated from the valve.
KR1020080085582A 2008-08-30 2008-08-30 Oil pressure control valve with valve guide KR20100026545A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020080085582A KR20100026545A (en) 2008-08-30 2008-08-30 Oil pressure control valve with valve guide

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020080085582A KR20100026545A (en) 2008-08-30 2008-08-30 Oil pressure control valve with valve guide

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KR20100026545A true KR20100026545A (en) 2010-03-10

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KR1020080085582A KR20100026545A (en) 2008-08-30 2008-08-30 Oil pressure control valve with valve guide

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101492238B1 (en) * 2013-09-10 2015-02-16 동양중공업(주) Control valve for hidraulic breaker
KR101671352B1 (en) * 2015-05-13 2016-11-16 (주) 슬립링코리아 Optical signal transmitting means is provided with a three-axis slip ring
KR102385104B1 (en) 2021-11-03 2022-04-11 신승호 Valve for hydraulic breaker that minimizes dimensional change due to temperature rise of hydraulic fluid of hydraulic breaker
KR102458518B1 (en) 2022-04-05 2022-10-25 신승호 Front cover for wear-resistant hydraulic breakers

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101492238B1 (en) * 2013-09-10 2015-02-16 동양중공업(주) Control valve for hidraulic breaker
KR101671352B1 (en) * 2015-05-13 2016-11-16 (주) 슬립링코리아 Optical signal transmitting means is provided with a three-axis slip ring
KR102385104B1 (en) 2021-11-03 2022-04-11 신승호 Valve for hydraulic breaker that minimizes dimensional change due to temperature rise of hydraulic fluid of hydraulic breaker
KR102458518B1 (en) 2022-04-05 2022-10-25 신승호 Front cover for wear-resistant hydraulic breakers

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