JPS55116932A - Controling method of hydraulic shovel - Google Patents
Controling method of hydraulic shovelInfo
- Publication number
- JPS55116932A JPS55116932A JP2573079A JP2573079A JPS55116932A JP S55116932 A JPS55116932 A JP S55116932A JP 2573079 A JP2573079 A JP 2573079A JP 2573079 A JP2573079 A JP 2573079A JP S55116932 A JPS55116932 A JP S55116932A
- Authority
- JP
- Japan
- Prior art keywords
- valve
- turning
- pump
- circuit
- circuits
- 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.)
- Pending
Links
Abstract
PURPOSE: To upgrade the working efficiency by controlling the discharge flow rage of the variable displacement pump exclusive for turning the hydraulic motor with a regulator according to the discharge pressure of the pump.
CONSTITUTION: Variable displacement pumps P1, P2 and P3 are driven simultaneously with a prime mover E. The pump P3 exclusively used for turning is connected to a turning circuit by way of a circuit 24 and a normal/reverse switching valve 25. A brake control valve 34 is provided between normal side feed circuits 26 and 27 of a turning motor M3 and reverse side feed circuits 28 and 29. In the course of circuits 26 and 29, circuits 35 and 36 for drawing the pressure thereof are connected to a low pressure selection valve 37. A choke valve 41 is provided in the circuit 40 while a pilot circuit 42 for actuating the conpensator valve 18 is connected between the choke valve 41 and the low pressure selection valve 37. The pump P3 is controlled by way of a regulator 43.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2573079A JPS55116932A (en) | 1979-03-05 | 1979-03-05 | Controling method of hydraulic shovel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2573079A JPS55116932A (en) | 1979-03-05 | 1979-03-05 | Controling method of hydraulic shovel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS55116932A true JPS55116932A (en) | 1980-09-08 |
Family
ID=12173915
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2573079A Pending JPS55116932A (en) | 1979-03-05 | 1979-03-05 | Controling method of hydraulic shovel |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS55116932A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57131585U (en) * | 1981-02-12 | 1982-08-16 | ||
| JPS5891959A (en) * | 1981-11-21 | 1983-06-01 | Kato Seisakusho:Kk | Speed-change device for actuator |
| JPS6322930A (en) * | 1986-07-16 | 1988-01-30 | Yutani Heavy Ind Ltd | Hydraulic circuit for construction machine |
| WO2017188460A1 (en) * | 2017-07-27 | 2017-11-02 | 株式会社小松製作所 | Control system, work machine, and control method |
-
1979
- 1979-03-05 JP JP2573079A patent/JPS55116932A/en active Pending
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57131585U (en) * | 1981-02-12 | 1982-08-16 | ||
| JPS5891959A (en) * | 1981-11-21 | 1983-06-01 | Kato Seisakusho:Kk | Speed-change device for actuator |
| JPH0232482B2 (en) * | 1981-11-21 | 1990-07-20 | Kato Seisakusho Kk | |
| JPS6322930A (en) * | 1986-07-16 | 1988-01-30 | Yutani Heavy Ind Ltd | Hydraulic circuit for construction machine |
| WO2017188460A1 (en) * | 2017-07-27 | 2017-11-02 | 株式会社小松製作所 | Control system, work machine, and control method |
| CN107660257A (en) * | 2017-07-27 | 2018-02-02 | 株式会社小松制作所 | Control system, Work machine and control method |
| JPWO2017188460A1 (en) * | 2017-07-27 | 2018-05-24 | 株式会社小松製作所 | Control system, work machine, and control method |
| CN107660257B (en) * | 2017-07-27 | 2020-06-16 | 株式会社小松制作所 | Control system, work machine, and control method |
| US11047112B2 (en) | 2017-07-27 | 2021-06-29 | Komatsu Ltd. | Control system, work machine, and control method |
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