JPS6249087A - Multidimensional pilot circuit - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to a multidimensional piezoelectric circuit that performs If force control 211 such as hydraulic pressure and pneumatic pressure.

BACKGROUND OF THE INVENTION Generally, in conventional circuits, as shown in FIG. 6, hydraulic fluid 12 pressurized by pilot hydraulic pump pressure flows down to regulating valves 13, 14, 15. This regulating valve 13.14.15
The hydraulic fluid 12 added to each regulating valve 13, 14, 15 is controlled by the pressure ZIJ from each control line to a specific pyrower, for example, 50 KFi/cM, 100
KFly'crA, 150 is set to 5y"crt, and the above pressure is applied to the directional control valve 1 (3° 17.18) which is operated by a specific pilot pressure. The directional control valve to which pressure is applied performs a valve switching operation and determines the direction in which the hydraulic fluid 12 pressurized (Po=20ONg,,' ci ) is added by the hydraulic pump 19. If you want to drive actuator A1 from among actuators A, A, and A3, pilot pressure 508!j
The pilot pressure is set by the regulating valve 13 whose pressure is controlled by the /ci line control line, and this pilot pressure is set by the directional control valve 1.
6, the directional control valve 16 is actuated, the valve is switched, hydraulic fluid pressurized to 200 kg/car flows into the actuator A1, and the actuator A1 is driven. Similarly, if you want to drive actuator A2, set the pilot pressure to 100Kg/crA line,
When it is desired to drive actuator A3, the pilot pressure is set to 150 kg/crA line and each actuator is driven.

``Problems that the invention seeks to solve: However, in such a circuit, the same number of pilot line systems is required for the number of actuators, and when controlling a large number of actuators, the pilot line system requires an increase in the number of piping. Therefore, conventional methods used solenoid valves to process signals and switch the direction of hydraulic pressure, but with solenoid valves, when used underwater, it was difficult to operate due to insulation deterioration. It has the drawback of causing defects, which poses problems in terms of reliability.

The present invention was made in view of the above problems, and includes a multidimensional pilot circuit that is configured by combining pilot line systems that control a large number of actuators, and that enables processing of a large number of information signals for controlling the actuators. The purpose is to promote

[Means for Solving the Problems] The present invention provides a plurality of regulating valves for controlling the hydraulic pressure to a plurality of stages of pyrower pressure, and a control valve according to the pilot pressure of at least one of the regulating valves. The first
a pilot valve group, and at least three of the regulating valves.
A second pilot valve group that operates according to the pilot pressure of each of the two regulating valves, and an actuator that operates according to the operating pressure discharged by the combination of the first and second pilot valve groups. Features.

[Operation] Therefore, it is possible to set a predetermined pilot pressure for each regulating valve using an information signal, and use this pilot pressure to select and drive a predetermined actuator from among a large number of actuators, thereby achieving the above-mentioned purpose. I can do it.

[Embodiment] An embodiment of the present invention will be explained in detail based on the drawings of FIGS. 1 to 4.

FIG. 1 is an example of a configuration diagram of the present invention, in which a hydraulic pump 2
Pressurize by 1 (P □ = 200 K9 / crt
) The hydraulic fluid 22 reaches a plurality of cubic matrices M1- and M2□, which are combined into 27 cubic matrices that selectively drive 729 actuators.

In addition, the pilot hydraulic pump 23 pressurizes (P p =
150 to 200 K9/ctA), the working fluid 22 has a pilot pressure of 9/ci to 50 and 9/ci to 100.
ci.

Adjustment valve 24-2 that can be set in 3 stages of 150 to 9/cM
Joins the primary side of 9. In the regulating valves 24 to 29, the hydraulic fluid added to each regulating valve is set to a specific secondary pressure (byron 1 pressure) by pressure control from each control line. Of this pilot pressure, pilot pressure [] (j, P
v, P, 1 are combined into 27 cube-shaped matrices, resulting in 71-lixes M1 to M. This pilot pressure P , P .

27 U VP, the working pressure P is applied to a predetermined matrix of the matrices M1-M2□. is added, and this setting value differs for each matrix. Also, the pilot pressures P , P .

The combination of x Y Pz is set so that the operating pressure Po is applied to a predetermined actuator among the actuators arranged in each matrix.

- The matrices M-M2□ have the same configuration, and FIG. 2 shows a diagram of the configuration of the matrix M1 as an example.

In the figure, pilot pressures P, P, and Pl are combined into Y27 cubic matrixes and reach actuators A-A27, respectively. The combination of pilot pressures P, P, .

Therefore, for example, the pilot pressures Px, P of the regulating valves 24 to two
,,P7. PU, Pv, pl4 each 50 K9
/ ctA, only actuator △1 of matrix M is driven 1ijJ, according to Figs. 1 and 2.
Pilot IIP, PY, Pz 150K
g/cry, 15089/ci, 50Kg/crj
Then, set the pilot pressures P, P, and P to 50% each.
When U ν is set to Kg/aA, only actuator 80 of matrix M1 is similarly driven.

Fig. 3 is a circuit diagram showing part of an example in which the configuration diagram in Fig. 1 is applied to an actual circuit, and Fig. 4 is a diagram showing Fig. 3 in more detail, driving actuators A1 to A. It is a circuit diagram in the case of control.

In Fig. 3, the dashed-two dotted lines are matrices M1 to M2□
Of these, matrices M1 to M3 are shown, and this matrix is composed of three blocks, and includes pilot pressures P, pY, pZ, and pu.

Pv, P and working pressure Po are each matrix M1 to M
3 can be added to each block.

Each matrix has the same structure as the matrix M1 shown in FIG.

They are respectively combined with a first pilot valve group consisting of a combination of three pilot valves operated by P, , P-. Furthermore, each block has the same configuration as the block that controls the drive of actuators A-A9 shown in FIG. 4, and each actuator has a pilot pressure P
, P , P , a second valve consisting of a combination of three pilot valves operated by YZ
They are combined with the pilot valve group of each. Therefore, pressurize with the hydraulic pump 21 (Po=200Kg/ai)
The hydraulic fluid 22 is at the pilot pressure PU.

Each actuator can be reached via a first pilot valve operated at P, P and a second bi-Y lot valve operated at pilot pressures P, P, Pl.

For example, if you want to drive actuator A1,
First, in Fig. 3, the hydraulic pump 21. Pilot hydraulic pump 2
3 pressurizes the hydraulic fluid 22 and adjusts the regulating valve 2.
9/ci to 20 to 150 primary side pressure P of 4 to 29
OK'j/crA, working pressure P.

Increase to 20ONg/-. Next, the regulating valves 24 to 2 are
The secondary pressure (pilot pressure) P
, P, P, P, and PW are each set to 50 Kg/cIli.

When the pilot pressures p , p , p are set to 50 kg/m and 1 VW, the pilot valve group v81 shown in FIG. 4 among the 27 first pilot valve groups is activated and becomes inactive.
The working pressure P applied from the hydraulic pump 21 is applied to the second pilot valve group Vb1 via the first pilot valve group v81.
~Add to Vb9. This second pilot valve group ■b1~
Of vb9, the pilot valve group V has a pilot pressure P,
P, Pl is that bI
When X and Y are set to 50 Kg/cM, they are activated and open, and the above operating pressure P is reached. is applied only to actuator A1 via second pilot valve group vb1.

Therefore, the actuator 1 can be driven under pressure.

Also, pilot pressure P, pY, pl, pU.

If either PV or PI3 is set to a value other than 50 Kg/ci, one of the pilot valves of the first and second pilot valve groups is closed, and the operating pressure P applied to the actuator A. I make a final decision. Therefore, the actuator A1 can return to the initial state by its own spring.

Next, when you want to drive actuator 80, adjust valve 2
4 to 26 are adjusted by the multi-control line as above, and the first
Based on the diagram and the configuration diagram in Figure 2, the pilot pressure P,
P, Pl to 150Kg/Y ai, 150 to 9/c#i and 50J! F/i, the regulating valves 27 to 29 are also adjusted by each control line, and the pilot pressures P, P, and P are set to 5 (MgV
Set to W/ci.

When the pilot pressures P, P, and P- are set to 50 Ky/ci, the first pilot valve group va1 is activated and opened, and the operating pressure P applied from the hydraulic pump 21 is
It is added to the second pilot valve group vb1 to "b9 via the first pilot valve group va1. 15 bytes 1 to .P, Pl of this second pilot valve group vb1 to vb9 are added to the second pilot valve group vb9. are pilot pressures PX and Y, each 150
ni'l/ci, 150Kg/cri, 50 to 9/l
When it is set to ri, it is activated and the above-mentioned operating pressure Po
is applied only to actuator 80 via second pilot valve group vb9. Therefore, actuator A9 can be driven under pressure.

Also, set any one of pilot pressure Px, P, Pl to 50
If you set it to a value other than K9/c#i, or set any of the pilot pressures P, P, and P- to a value other than 150v Kg/ai, 150 to 9/ci, or 50Kg/-, the first When one of the pilot valves in the second pilot valve group is closed, the operating pressure P is applied to the actuator A. will be terminated. Therefore, the actuator 9 can be returned to its initial state by its own spring.

In the above-mentioned embodiment, 729 signal processings were performed using six pilot lines and three pilot pressure levels. However, the present invention is not limited to the above-mentioned embodiment. By increasing the number of dimensions, it is possible to configure and implement a circuit in even more dimensions without limiting the number of dimensions, and it is also possible to provide calculation functions, discrimination stone surfaces, etc. using only the hydraulic circuit. Furthermore, it is possible to connect a plurality of actuators to one set of second pilot valve groups and drive the plurality of actuators simultaneously, or to drive two sets of second pilot valve groups simultaneously.
It is also possible to connect the pyrower 1 to the valve group with a shuttle valve and drive one actuator with either pilot valve group. It is also possible to install a throttle valve inside each pilot valve and provide a time delay in its operation to prevent malfunctions when the pilot pressure fluctuates instantaneously due to disturbances, etc.
In addition to the above-mentioned throttle valve, a check valve is also installed internally to provide a time delay in operation for pressure operation in either the rising or falling direction of the pilot pressure. It is also possible to operate so as to cancel the delay in the activation time. Furthermore, as shown in Fig. 5, the pilot valves of the second pilot valve group are connected to pilot valves vAX, vAY, ■AI that are opened at X Y l for predetermined pilot pressures P, P, and P, and pilot valves vAX, vAY, ■AI that are opened for predetermined pressures. Pilot valve VBX'"BY" closes.

■ Predetermined pilot pressure P, P separately.

BZ
Actuator A by setting a range that is open to It is also possible to drive the pilot valves of the first pilot valve group (also applicable to the pilot valves of the first pilot valve group).

[Effects of the Invention] As explained above, the present invention includes a plurality of regulating valves that control hydraulic pressure to a plurality of pilot pressure levels, and a control valve that controls hydraulic pressure according to the pilot pressure of at least one of the regulating valves. By the combination of a first pilot valve group that operates, a second pilot valve group that operates according to the pilot pressure of at least three of the regulating valves, and the first and second pilot valve groups. Since it is equipped with an actuator that operates according to the discharged working pressure, it is possible to configure a pilot line system that controls a large number of actuators in combination, and it is possible to process a large number of information signals for controlling the actuators. can.

[Brief explanation of drawings]

FIG. 1 is an example of the configuration diagram of the present invention, FIG. 2 is an example of the configuration diagram of the matrix M1 in FIG. 1, and FIG. 3 is a circuit diagram showing a part of an embodiment constructed based on FIG. 1. , Figure 4 is the third
FIG. 5 is a circuit diagram showing a part of the figure in more detail, FIG. 5 is a circuit diagram showing another embodiment of the pilot valve group of the present invention, and FIG. 6 is a circuit diagram showing a conventional example. 21... Hydraulic pump, 23... Hydraulic pump to pilot two, 24-29... Regulating valve, M1-M27... Marix, ■ a1... First pilot valve group, ■b
1 to vb9... second pilot valve group, P, P
, P , P , P , P-...Pilots Y2
UV pressure, A to 〇...actuator. Applicant’s representative Hisashi Motomura [″,,)−:,”
,' 1 (j−・−・−1

Claims (1)

[Scope of Claims] A plurality of regulating valves that control hydraulic pressure to a plurality of stages of pilot pressure, and a first pilot valve group that each operates according to the pilot pressure of at least one regulating valve among the regulating valves. and a second pilot valve group that operates in response to the pilot pressure of at least three of the regulating valves, and a second pilot valve group that operates in response to the operating pressure discharged by the combination of the first and second pilot valve groups. A multidimensional pilot circuit characterized by comprising an actuator that operates by