JPS57160727A - Hydraulic driving device of auxiliary machine on board vehicle - Google Patents
Hydraulic driving device of auxiliary machine on board vehicleInfo
- Publication number
- JPS57160727A JPS57160727A JP4667481A JP4667481A JPS57160727A JP S57160727 A JPS57160727 A JP S57160727A JP 4667481 A JP4667481 A JP 4667481A JP 4667481 A JP4667481 A JP 4667481A JP S57160727 A JPS57160727 A JP S57160727A
- Authority
- JP
- Japan
- Prior art keywords
- pump
- transmission
- switching valve
- hydraulic
- driving device
- 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.)
- Granted
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K25/00—Auxiliary drives
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Auxiliary Drives, Propulsion Controls, And Safety Devices (AREA)
Abstract
PURPOSE:To make it possible to avoid troubles such as engine stoppage even when a change lever is mis-operated by mounting a unloader switching valve on a captioned hydraulic driving device driven via transmission and unloading a hydraulic pump at any position other than a prescribed speed change position. CONSTITUTION:Hydraulic pressure from a hydraulic pump 5 driven via transmission is fed to a motor 10 for driving a concrete pump, etc., via a switching valve 14 changed over by a pilot valve 22. Solenoids SOL 2, 3 are now arranged around said pilot valve 22, and these solenoids are constructed such that they are not excited when an operating lever for the transmission is positioned at a position except the third speed and the fourth speed ones being the prescribed transmission positions, thus the switching valve 14 is now kept at the neutral position. Therefore, the pump 5 makes a unloading operation, preventing engine stoppage due to overload and machine damage due to a reverse current of concrete caused by said engine stoppage.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP4667481A JPS57160727A (en) | 1981-03-30 | 1981-03-30 | Hydraulic driving device of auxiliary machine on board vehicle |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP4667481A JPS57160727A (en) | 1981-03-30 | 1981-03-30 | Hydraulic driving device of auxiliary machine on board vehicle |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS57160727A true JPS57160727A (en) | 1982-10-04 |
JPS627011B2 JPS627011B2 (en) | 1987-02-14 |
Family
ID=12753913
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP4667481A Granted JPS57160727A (en) | 1981-03-30 | 1981-03-30 | Hydraulic driving device of auxiliary machine on board vehicle |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS57160727A (en) |
-
1981
- 1981-03-30 JP JP4667481A patent/JPS57160727A/en active Granted
Also Published As
Publication number | Publication date |
---|---|
JPS627011B2 (en) | 1987-02-14 |
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