KR101498314B1 - The fitting assembly with valve stroke limiter function - Google Patents
The fitting assembly with valve stroke limiter function Download PDFInfo
- Publication number
- KR101498314B1 KR101498314B1 KR1020100129031A KR20100129031A KR101498314B1 KR 101498314 B1 KR101498314 B1 KR 101498314B1 KR 1020100129031 A KR1020100129031 A KR 1020100129031A KR 20100129031 A KR20100129031 A KR 20100129031A KR 101498314 B1 KR101498314 B1 KR 101498314B1
- Authority
- KR
- South Korea
- Prior art keywords
- spool
- fitting body
- fitting
- valve
- cap
- Prior art date
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Sliding Valves (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
Abstract
The present invention relates to a fitting device for a pipe having a stroke limiter function, and an object of the present invention is to provide a fitting device which is provided at a port to which pilot oil hydraulic fluid is supplied and connects the valve and the pilot pipe, There is provided a piping fitting device having a function of a stroke limiter for limiting a displacement amount and having a stroke limiter function which can be easily limited to a required flow rate without using a structural change of a valve or using a separate flow control valve .
The present invention relates to a piping fitting apparatus assembled in a spool cap of a valve in a hydraulic valve having a spool controlled by pilot oil pressure,
Wherein the fitting device includes a fitting body having a connection port at both ends thereof and having a passage therein and having a screw portion at an intermediate portion thereof and a nut fastened to a screw portion formed at an intermediate portion of the fitting body,
The fitting body is provided at one end of the fitting body with a connection port on the spool cap so as to protrude into the spool cap of the hydraulic valve where the spool is located, and then the nut is fastened to the threaded portion of the fitting body to fix the position.
Description
The present invention relates to a pipe fitting apparatus having a stroke limiter function, and is equipped with a valve for controlling the movement of the spool by using a pilot hydraulic pressure, so as to limit the movement of the spool, To a pipe fitting apparatus having a stroke limiter function for limiting a flow rate.
FIG. 2 is a view showing an example of the configuration of a valve in which a conventional fitting device is assembled. The end portion of the conventional fitting 6 is not sufficiently protruded to limit the maximum displacement of the
In the case of a control valve that is applied to various hydraulic systems such as a construction machine, the amount of displacement of the spool is controlled according to the size of the pilot oil pressure, and the hydraulic oil discharged from the pump to the actuator is opened or blocked. The shape of the spool for controlling the flow rate is designed to exhibit the optimum performance in consideration of the discharge flow rate of the pump and the size of the actuator.
Sometimes, however, a smaller actuator than the original one is installed depending on the user's needs. In this case, a flow rate greater than the proper flow rate for driving the actuator is supplied, which makes it difficult to control the actuator at a proper speed do.
In order to solve this problem, the flow rate is controlled by providing a separate flow control valve for adjusting the flow rate between the valve and the actuator, or by changing the spool shape of the valve and adjusting the flow path area. There is a cost problem due to the additional installation of the valve and the replacement of the spool, and a separate device for installing the flow control valve is required.
SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and it is an object of the present invention to provide a fitting device which is installed in a port to which a pilot hydraulic fluid of a valve is supplied and connects a valve and a flow path of a pilot pipe, The present invention provides a piping fitting device having a stroke limiter function and having a stroke limiter function that can be structurally changed or restricted to a required flow rate without using a separate flow control valve.
The present invention relates to a piping fitting apparatus assembled in a spool cap of a valve in a hydraulic valve having a spool controlled by pilot oil pressure,
Wherein the fitting device comprises a fitting body having connection ports at both ends thereof, a fitting body having a flow path therein and a threaded portion at an intermediate portion thereof,
And a nut fastened to a threaded portion formed at an intermediate portion of the fitting body,
The fitting body is provided at one end of the fitting body with a connection port on the spool cap so as to protrude into the spool cap of the hydraulic valve where the spool is located, and then the nut is fastened to the threaded portion of the fitting body to fix the position.
As described above, according to the present invention, the end of the fitting body protrudes into the spool cap of the hydraulic valve. When the spool is operated by the hydraulic pressure, the end of the fitting body protruded into the spool cap contacts the spool operated by the hydraulic pressure, The amount of displacement of the spool can be arbitrarily limited, so that the flow rate can be easily controlled without changing the shape of the flow control valve or the spool.
Further, since the nut is fastened to the fitting body, it is possible to adjust the degree of fastening of the fitting body and the nut, that is, the degree of insertion of the fitting body end into the spool cap by rotating the fitting body around the nut, Can be easily changed.
Further, the present invention has a function of restricting the amount of displacement of the spool of the hydraulic valve at the same time in addition to the original function of the fitting connecting the valve and the piping, and it is possible to reduce the cost, have.
FIG. 1 is an exemplary view showing the configuration of a valve assembled with the present invention
2 is an exemplary view showing a configuration of a valve in which a conventional fitting device is assembled
FIG. 1 is a view showing an example of a valve assembly in which the present invention is assembled,
The present invention relates to a piping fitting device (50) assembled to a spool cap (42) of a valve in a hydraulic valve (40) having a spool (41) controlled by pilot hydraulic pressure;
The
And a fixing nut (20) fastened to the threaded portion (13) of the fitting body (10) to fix the position of the fitting body (10)
The
The
According to the present invention as described above, the position of the
That is, in the present invention, the
It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined in the appended claims and their equivalents. Of course, such modifications are within the scope of the claims.
(10): fitting body (11): connection port
(12): flow path (13): thread
(14): end (20): fixing nut
(30): washer (40): hydraulic valve
(41): spool (42): spool cap
(43): spool cap interior (50): fitting device
Claims (2)
Wherein the fitting device comprises a fitting body having connection ports at both ends thereof, a fitting body having a flow path therein and a threaded portion at an intermediate portion thereof,
And a fixing nut fastened to the threaded portion of the fitting body,
The fitting body is installed on the spool cap so that one end of the fitting body protrudes inside the spool cap of the hydraulic valve in which the spool is located, and then the fixing nut is fastened to the threaded portion of the fitting body to fix the position,
The amount of displacement of the spool is limited by the contact of the end of the fitting body protruding into the spool cap and the spool operated by the hydraulic pressure when the spool is operated by the hydraulic pressure so that the flow rate is controlled. A fitting device for a pipe.
Wherein a fitting body end position of the fitting body protruding into the spool cap is adjusted by tightening the threaded portion and the nut so that a displacement amount of the hydraulic valve spool is controlled.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020100129031A KR101498314B1 (en) | 2010-12-16 | 2010-12-16 | The fitting assembly with valve stroke limiter function |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020100129031A KR101498314B1 (en) | 2010-12-16 | 2010-12-16 | The fitting assembly with valve stroke limiter function |
Publications (2)
Publication Number | Publication Date |
---|---|
KR20120067559A KR20120067559A (en) | 2012-06-26 |
KR101498314B1 true KR101498314B1 (en) | 2015-03-03 |
Family
ID=46686540
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
KR1020100129031A KR101498314B1 (en) | 2010-12-16 | 2010-12-16 | The fitting assembly with valve stroke limiter function |
Country Status (1)
Country | Link |
---|---|
KR (1) | KR101498314B1 (en) |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH08253125A (en) * | 1995-03-20 | 1996-10-01 | Daikin Ind Ltd | Direct acting pressure reducing valve |
JPH10184938A (en) * | 1996-10-24 | 1998-07-14 | Denso Corp | Spool valve type hydraulic control valve |
JP2003322272A (en) * | 2002-05-01 | 2003-11-14 | Eaton Corp | Pressure control valve assembly and method for operating pressure control valve |
KR100814497B1 (en) * | 2007-04-02 | 2008-03-18 | 주식회사 파카한일유압 | Variable flow control logic valve |
-
2010
- 2010-12-16 KR KR1020100129031A patent/KR101498314B1/en not_active IP Right Cessation
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH08253125A (en) * | 1995-03-20 | 1996-10-01 | Daikin Ind Ltd | Direct acting pressure reducing valve |
JPH10184938A (en) * | 1996-10-24 | 1998-07-14 | Denso Corp | Spool valve type hydraulic control valve |
JP2003322272A (en) * | 2002-05-01 | 2003-11-14 | Eaton Corp | Pressure control valve assembly and method for operating pressure control valve |
KR100814497B1 (en) * | 2007-04-02 | 2008-03-18 | 주식회사 파카한일유압 | Variable flow control logic valve |
Also Published As
Publication number | Publication date |
---|---|
KR20120067559A (en) | 2012-06-26 |
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