CA1290651C - Multiple hydraulic control - Google Patents
Multiple hydraulic controlInfo
- Publication number
- CA1290651C CA1290651C CA000558089A CA558089A CA1290651C CA 1290651 C CA1290651 C CA 1290651C CA 000558089 A CA000558089 A CA 000558089A CA 558089 A CA558089 A CA 558089A CA 1290651 C CA1290651 C CA 1290651C
- Authority
- CA
- Canada
- Prior art keywords
- valve
- outlet
- inlet
- valves
- kit according
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Abstract
MULTIPLE HYDRAULIC CONTROL
ABSTRACT OF THE INVENTION
A kit is used for converting a single outlet hydraulic system to a multiple outlet system. The kit includes plural two-way, two-position solenoid operated valves, gauged with their inlets connected in parallel and their outlets serving as the multiple outlets. The valves are operated by a control handle mounted on the control lever of the single outlet system. Each valve is controlled by an independent switch on the hand grip of the handle. The control handle can thus be used both to select an outlet and to control the flow through the outlet.
ABSTRACT OF THE INVENTION
A kit is used for converting a single outlet hydraulic system to a multiple outlet system. The kit includes plural two-way, two-position solenoid operated valves, gauged with their inlets connected in parallel and their outlets serving as the multiple outlets. The valves are operated by a control handle mounted on the control lever of the single outlet system. Each valve is controlled by an independent switch on the hand grip of the handle. The control handle can thus be used both to select an outlet and to control the flow through the outlet.
Description
~L~29~6~i~
MULTIPLE HYDRAULIC CONTROL
FIELD OF THE INVENTION
The present invention relates to hydraulic power systems and more particularly to the conversion of a single outlet hydraulic power system to a multiple outlet system.
BACKGROUND
In tractors and other equipment with hydraulic power systems for operating auxiliary units, it is fre-quently desirable to provide more outlets for the hy-draulic system than those with which the original equipment was supplied. Conventionally, this involves plumbing in one or more additional hydraulic circuits, including extra hydraulic lines and control valves at the operator's station, e.g. in the cab of a tr~ctor. The conversion is time consuming and costly and the potential leak points are multiplied.
SUMMARY
The present invention is concerned with the provision OI an alternative system for multiplying single hydraulic outlets to provide plural outlets.
According to the present invention there is provided a kit for converting to a plural outlet system a single outlet hydraulic system having a single hydraulic .. .
~06~;~
system outlet including two hydraulic system outlet ports, means for supplying hydraulic fluid under pressure to the hydraulic system outlet and means including a manually operable lever for varying the hydraulic fluid supply to the hydraulic system outlet, said kit compris-ing:
a plurality of two-way, two-position valves, each having a valve inlet comprisin~ two valve inlet ports, a valve outlet comprising two valve outlet ports, valving means operatively connected between the inlet and outlet and having valve open and valve closed conditions, respectively opening and closing communication between the outlet and the inlet, and actuator means operatively associated with the valving means for selectively actuat-ing the valving means into the valve open and valve closed conditions each actuator means being independent of each other actuator means;
valve inlet coupling means coupling the valve inlets in parallel for fluid communication therebetween;
means for connecting the coupled valve inlets to the hydraulic system outlet;
a control handle including a hand grip and a plurality of manually operable control means spaced therealong for engagement by respective fingers of an ,~
~, .
5~L
operator's hand;
means for mounting the control handle on the manually operable lever of the hydraulic system; and control circuit means connecting each valve actuator means to a respective manually operable control means for selective operation of the actuator means in response to operation of the control.
Coupling the valve inlets to a single system outlet provides multiple outlets that are selectively actuable. The control for the system outlet then con-trols whichever outlets are selected by the operator using the control handle.
Mounting the control handle on the control lever at the operator's station allows an operator to select the outlet to be powered then simultaneously to control the flow to that outlet, The valves may be stacked valves, coupled in a unit, with the inlets in direct communication with one another. With such an arrangement, the multiple outlet system can be treated as a unit that connects to the single outlet system with quick release couplings so that it can be transferred from one piece of equipment to another as required.
~9~51 BRIEF DESCRIPTION OF THE DRAWINGS
In the accompanying drawings, which illustrate exemplary embodiments of the present invention..
Figure 1 is an isometric representation of a set of stacked valves;
~ igure 2 is a side elevation of a control handle sectioned to show the internal structure; and Figure 3 is a cross-sectional elevation of a valve.
DETAILED DESCRIPTION
Referring to the accompanying drawings, Figure 1 illustrates a valve assembly consisting of three hy-draulic selector valves 2A, 2A and 2B. Each valve is a two-way, two-position valve constructed generally as illustrated in Figure 4. The valve has a valve body with an inlet including a pair of inlet ports 5, and an outlet including a pair of outlet ports 3. The inlet passes through the body so that when the valves are stacked as illustrated in Figure 1, adjacent pairs of inlet ports on adjacent valves are in alignment, so that hydraulic fluid can pass into and from all three valves. The extra inlet ports of the valve 2B are closed with plugs 4 IFigure 1~.
Each valve contains a spool 17 that can be displaced along the valve body selectively to open or close commun-ication between the inlet and the outlet.
,.~ .....
- ~9~51 In the valves 2A, the spool 17 is biased to a valve closed condition, in which the communication be-tween the inlet and the outlet is cut off, by a coil spring 16 acting on the bottom of the spool and held in place by a plug 4' threaded into the bottom of the valve body. To move the spool to a valve open condition, in which communication is established between the inlet and outlet, a solenoid 1 is actuated, forcing the spool along the valve body against the force of spring 16. The valve 2B is similarly constructed, but in this case the coil spring 16 is omitted and a second solenoid 1 is mounted on the valve body so that the spool 17 may be positively displaced from either the open or the closed condition to the other, with neither condition being a "default"
condition.
The inlet ports of the valve 2A on the left hand side of the sides viewed in Figure l are connected to respective hydraulic lines 5 which are in turn con-nected to quic~ release hydraulic couplers 6 that mount in the outlet ports of the single outlet hydraulic system. The two outlet ports are thus coupled to the inlet ports of all three valves and each valve can be actuated to open and close communication between its outlet and that of the slngle system. The two way valves i5~
provide for supply and return flow, which may be rever-sible depending on the control of the single outlet system.
Figure 2 of the accompanying drawings illus-trates a control module 11 with a series of on-off switches 12. The switches are all connected to a power supply 15 and each switch is connected to a respective valve actuator solenoid 1 by an electric circuits 8. The illustrated control module has a series of four switches that can be used for a system with up to four solenoid actuators 1 for the three valves 2A, 2A and 2B. The control module is constructed as a control handle 11 with the four switches 12 spaced along the handle. the switches are normally open and close when pressed. The control handle is equipped with a mounting bracket 13, 14 for mounting the handle on an existing hydraulic con-trol lever (not illustrated~ of the original equipment single outlet system. This means that the operator can control both the selection of outlets and the flow to ~hose outlets with a single hand.
The use of quick release couplings connecting the valves lnto the existing hydraulic system allows the system to be transported readily from one hydraulic powPr unit to another simply by uncoupling the hose connections ,~ ..... .
~:9~6Si and the wiring harness.
While one embodiment of the present invention has been described in the foregoing, it is to be under-stood that other embodiments are possible within the scope of the present invention. The invention is to be considered limited solely by the scope of the appended claims.
.. .
MULTIPLE HYDRAULIC CONTROL
FIELD OF THE INVENTION
The present invention relates to hydraulic power systems and more particularly to the conversion of a single outlet hydraulic power system to a multiple outlet system.
BACKGROUND
In tractors and other equipment with hydraulic power systems for operating auxiliary units, it is fre-quently desirable to provide more outlets for the hy-draulic system than those with which the original equipment was supplied. Conventionally, this involves plumbing in one or more additional hydraulic circuits, including extra hydraulic lines and control valves at the operator's station, e.g. in the cab of a tr~ctor. The conversion is time consuming and costly and the potential leak points are multiplied.
SUMMARY
The present invention is concerned with the provision OI an alternative system for multiplying single hydraulic outlets to provide plural outlets.
According to the present invention there is provided a kit for converting to a plural outlet system a single outlet hydraulic system having a single hydraulic .. .
~06~;~
system outlet including two hydraulic system outlet ports, means for supplying hydraulic fluid under pressure to the hydraulic system outlet and means including a manually operable lever for varying the hydraulic fluid supply to the hydraulic system outlet, said kit compris-ing:
a plurality of two-way, two-position valves, each having a valve inlet comprisin~ two valve inlet ports, a valve outlet comprising two valve outlet ports, valving means operatively connected between the inlet and outlet and having valve open and valve closed conditions, respectively opening and closing communication between the outlet and the inlet, and actuator means operatively associated with the valving means for selectively actuat-ing the valving means into the valve open and valve closed conditions each actuator means being independent of each other actuator means;
valve inlet coupling means coupling the valve inlets in parallel for fluid communication therebetween;
means for connecting the coupled valve inlets to the hydraulic system outlet;
a control handle including a hand grip and a plurality of manually operable control means spaced therealong for engagement by respective fingers of an ,~
~, .
5~L
operator's hand;
means for mounting the control handle on the manually operable lever of the hydraulic system; and control circuit means connecting each valve actuator means to a respective manually operable control means for selective operation of the actuator means in response to operation of the control.
Coupling the valve inlets to a single system outlet provides multiple outlets that are selectively actuable. The control for the system outlet then con-trols whichever outlets are selected by the operator using the control handle.
Mounting the control handle on the control lever at the operator's station allows an operator to select the outlet to be powered then simultaneously to control the flow to that outlet, The valves may be stacked valves, coupled in a unit, with the inlets in direct communication with one another. With such an arrangement, the multiple outlet system can be treated as a unit that connects to the single outlet system with quick release couplings so that it can be transferred from one piece of equipment to another as required.
~9~51 BRIEF DESCRIPTION OF THE DRAWINGS
In the accompanying drawings, which illustrate exemplary embodiments of the present invention..
Figure 1 is an isometric representation of a set of stacked valves;
~ igure 2 is a side elevation of a control handle sectioned to show the internal structure; and Figure 3 is a cross-sectional elevation of a valve.
DETAILED DESCRIPTION
Referring to the accompanying drawings, Figure 1 illustrates a valve assembly consisting of three hy-draulic selector valves 2A, 2A and 2B. Each valve is a two-way, two-position valve constructed generally as illustrated in Figure 4. The valve has a valve body with an inlet including a pair of inlet ports 5, and an outlet including a pair of outlet ports 3. The inlet passes through the body so that when the valves are stacked as illustrated in Figure 1, adjacent pairs of inlet ports on adjacent valves are in alignment, so that hydraulic fluid can pass into and from all three valves. The extra inlet ports of the valve 2B are closed with plugs 4 IFigure 1~.
Each valve contains a spool 17 that can be displaced along the valve body selectively to open or close commun-ication between the inlet and the outlet.
,.~ .....
- ~9~51 In the valves 2A, the spool 17 is biased to a valve closed condition, in which the communication be-tween the inlet and the outlet is cut off, by a coil spring 16 acting on the bottom of the spool and held in place by a plug 4' threaded into the bottom of the valve body. To move the spool to a valve open condition, in which communication is established between the inlet and outlet, a solenoid 1 is actuated, forcing the spool along the valve body against the force of spring 16. The valve 2B is similarly constructed, but in this case the coil spring 16 is omitted and a second solenoid 1 is mounted on the valve body so that the spool 17 may be positively displaced from either the open or the closed condition to the other, with neither condition being a "default"
condition.
The inlet ports of the valve 2A on the left hand side of the sides viewed in Figure l are connected to respective hydraulic lines 5 which are in turn con-nected to quic~ release hydraulic couplers 6 that mount in the outlet ports of the single outlet hydraulic system. The two outlet ports are thus coupled to the inlet ports of all three valves and each valve can be actuated to open and close communication between its outlet and that of the slngle system. The two way valves i5~
provide for supply and return flow, which may be rever-sible depending on the control of the single outlet system.
Figure 2 of the accompanying drawings illus-trates a control module 11 with a series of on-off switches 12. The switches are all connected to a power supply 15 and each switch is connected to a respective valve actuator solenoid 1 by an electric circuits 8. The illustrated control module has a series of four switches that can be used for a system with up to four solenoid actuators 1 for the three valves 2A, 2A and 2B. The control module is constructed as a control handle 11 with the four switches 12 spaced along the handle. the switches are normally open and close when pressed. The control handle is equipped with a mounting bracket 13, 14 for mounting the handle on an existing hydraulic con-trol lever (not illustrated~ of the original equipment single outlet system. This means that the operator can control both the selection of outlets and the flow to ~hose outlets with a single hand.
The use of quick release couplings connecting the valves lnto the existing hydraulic system allows the system to be transported readily from one hydraulic powPr unit to another simply by uncoupling the hose connections ,~ ..... .
~:9~6Si and the wiring harness.
While one embodiment of the present invention has been described in the foregoing, it is to be under-stood that other embodiments are possible within the scope of the present invention. The invention is to be considered limited solely by the scope of the appended claims.
.. .
Claims (8)
1. A kit for converting to a plural outlet system a single outlet hydraulic system having a single hydrau-lic system outlet including two hydraulic system outlet ports, means for supplying hydraulic fluid under pressure to the hydraulic system outlet and means including a manually operable lever for varying the hydraulic fluid supply to the hydraulic system outlet, said kit compris-ing a plurality of two-way, two-position valves, each having a valve inlet comprising two valve inlet ports, a valve outlet comprising two valve outlet ports, valving means operatively connected between the inlet and outlet and having valve open and valve closed conditions, respectively opening and closing communication between the outlet and the inlet, and actuator means operatively associated with the valving means for selectively actuat-ing the valving means into the valve open and valve closed conditions each actuator means being independent of each other actuator means;
valve inlet coupling means coupling the valve inlets in parallel for fluid communication therebetween;
means for connecting the coupled valve inlets to the hydraulic system outlet;
a control handle including a hand grip and a plurality of manually operable control means spaced therealong for engagement by respective fingers of an operator's hand;
means for mounting the control handle on the manually operable lever of the hydraulic system; and control circuit means connecting each valve actuator means to a respective manually operable control means for selective operation of the actuator means in response to operation of the control.
valve inlet coupling means coupling the valve inlets in parallel for fluid communication therebetween;
means for connecting the coupled valve inlets to the hydraulic system outlet;
a control handle including a hand grip and a plurality of manually operable control means spaced therealong for engagement by respective fingers of an operator's hand;
means for mounting the control handle on the manually operable lever of the hydraulic system; and control circuit means connecting each valve actuator means to a respective manually operable control means for selective operation of the actuator means in response to operation of the control.
2. A kit according to Claim 1 wherein the valves are secured together in a unit.
3. A kit according to Claim 2 wherein each valve inlet comprises at least one pair of inlet ports for supply and return flow.
4. A kit according to Claim 3 wherein each valve inlet comprises a second pair of inlet ports and wherein the valves are stacked with adjacent valves having aligned pairs of inlet ports.
5. A kit according to Claim 4 wherein each valve is a spool valve, the valving means being a valve spool.
6. A kit according to Claim 5 wherein the valve actuator means comprise solenoid actuators.
7. A kit according to Claim 6 wherein at least one of the valves further comprises a spring return means operatively associated with the valving means, to bias the valving means towards the valve closed condition, and the solenoid actuator is operatively associated with the valving means to actuate the valving means to the valve open condition.
8. A kit according to Claim 1 including quick release coupling means for coupling the inlets to the single outlet system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA000558089A CA1290651C (en) | 1988-02-03 | 1988-02-03 | Multiple hydraulic control |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA000558089A CA1290651C (en) | 1988-02-03 | 1988-02-03 | Multiple hydraulic control |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1290651C true CA1290651C (en) | 1991-10-15 |
Family
ID=4137382
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000558089A Expired - Lifetime CA1290651C (en) | 1988-02-03 | 1988-02-03 | Multiple hydraulic control |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA1290651C (en) |
-
1988
- 1988-02-03 CA CA000558089A patent/CA1290651C/en not_active Expired - Lifetime
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US6164335A (en) | Manifold solenoid valve driven by serial signals | |
| US5919243A (en) | Work brake apparatus for wheel type excavator | |
| US7753077B2 (en) | Hybrid hydraulic joystick for electrically operating valves | |
| JPH0333559A (en) | Controller of pressurised fluid operating shift mechanism and method of the same | |
| US9651068B2 (en) | Double valve constructed from unitary single valves | |
| GB2153025A (en) | Vehicle hydraulic anti wheel slip brake system | |
| US5794651A (en) | Valve adaptor cap | |
| US4508014A (en) | Remote control apparatus for a machine such as a crane | |
| US4949757A (en) | Hydraulic control system | |
| EP0471850B1 (en) | Pilot valve | |
| CA1290651C (en) | Multiple hydraulic control | |
| US7114521B2 (en) | Double valve constructed from unitary single valves | |
| KR920002432B1 (en) | Brake release mechanism for vehicle towing | |
| CA1151029A (en) | Safety systems | |
| US4049128A (en) | Control system for automatic railway car coupler | |
| EP0314704A1 (en) | Load responsive system using load responsive pump control of a bypass type | |
| US3584647A (en) | Solenoid pilot dump combination directional control valve | |
| JPS61277723A (en) | Remote control circuit | |
| US4266497A (en) | Marine steering arrangement | |
| CA1237750A (en) | Brake release mechanism for vehicle towing | |
| KR0113816Y1 (en) | Auto-clutch | |
| CA1059189A (en) | High-reliability air brake system providing a plurality of operational modes | |
| WO1996001954A1 (en) | Control circuit | |
| CA1270422A (en) | Load responsive system using load responsive pump control of a bypass type | |
| JP2513543Y2 (en) | solenoid valve |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKLA | Lapsed | ||
| MKEC | Expiry (correction) |
Effective date: 20121205 |