JPS5519690A - Safety tilting device for bed of dump truck - Google Patents
Safety tilting device for bed of dump truckInfo
- Publication number
- JPS5519690A JPS5519690A JP7446279A JP7446279A JPS5519690A JP S5519690 A JPS5519690 A JP S5519690A JP 7446279 A JP7446279 A JP 7446279A JP 7446279 A JP7446279 A JP 7446279A JP S5519690 A JPS5519690 A JP S5519690A
- Authority
- JP
- Japan
- Prior art keywords
- bed
- oil
- oil passage
- passage
- safety valve
- 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
Abstract
PURPOSE: To prevent an overloaded bed from being tilted, by providing a feedback oil passage which is branched from a discharge oil passage and connected to an oil reservoir and by enabling setting a level for the pressure of working oil by a safety valve installed in the halfway part of the feedback oil passage.
CONSTITUTION: When the bed 3 is overloaded, the oil pressure in the discharge oil passage 9 rises above the level set by the first safety valve 12. At that time, the first safety valve 12 acts to return the discharged oil from the passage 9 to the oil reservoir 8 through an oil passage 11, a changeover valve V2, the first safety valve 12 and another oil passage 11. As a result, the protraction of a first cylinder 52 is prevented not to tilt the bed 3. To tilt the bed 3, the changeover valve V1 is shifted to a right position. Pressure oil is thus returned from the discharge oil passage 9 to the oil reservoir 8 through the valve V1 and a return oil passage 10 to retract a multistage cylinder 5 by the weight of the bed 3. As a result, the bed 3 is tilted.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7446279A JPS5519690A (en) | 1979-06-12 | 1979-06-12 | Safety tilting device for bed of dump truck |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7446279A JPS5519690A (en) | 1979-06-12 | 1979-06-12 | Safety tilting device for bed of dump truck |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5519690A true JPS5519690A (en) | 1980-02-12 |
| JPS5644285B2 JPS5644285B2 (en) | 1981-10-19 |
Family
ID=13547934
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7446279A Granted JPS5519690A (en) | 1979-06-12 | 1979-06-12 | Safety tilting device for bed of dump truck |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5519690A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4355943A (en) * | 1980-09-17 | 1982-10-26 | Robinson Morris D | Vehicle gate lift with protection against operation with improper loads |
| US4825909A (en) * | 1988-02-24 | 1989-05-02 | Diesel Equipment Limited | High pressure hydraulic flow control valve |
| US20140027013A1 (en) * | 2011-05-10 | 2014-01-30 | Komatsu Ltd. | Automatic supply system of consumable material |
| JP2015113103A (en) * | 2013-12-16 | 2015-06-22 | 日立建機株式会社 | Transportation vehicle |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4838508U (en) * | 1971-09-09 | 1973-05-12 | ||
| JPS4948379A (en) * | 1972-08-30 | 1974-05-10 |
-
1979
- 1979-06-12 JP JP7446279A patent/JPS5519690A/en active Granted
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4838508U (en) * | 1971-09-09 | 1973-05-12 | ||
| JPS4948379A (en) * | 1972-08-30 | 1974-05-10 |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4355943A (en) * | 1980-09-17 | 1982-10-26 | Robinson Morris D | Vehicle gate lift with protection against operation with improper loads |
| US4825909A (en) * | 1988-02-24 | 1989-05-02 | Diesel Equipment Limited | High pressure hydraulic flow control valve |
| US4865079A (en) * | 1988-02-24 | 1989-09-12 | Diesel Equipment Limited | High pressure hydraulic flow control valve |
| US20140027013A1 (en) * | 2011-05-10 | 2014-01-30 | Komatsu Ltd. | Automatic supply system of consumable material |
| US10155653B2 (en) * | 2011-05-10 | 2018-12-18 | Komatsu Ltd. | Automatic supply system of consumable material |
| JP2015113103A (en) * | 2013-12-16 | 2015-06-22 | 日立建機株式会社 | Transportation vehicle |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5644285B2 (en) | 1981-10-19 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JPS55109788A (en) | Feed pump control system | |
| JPS5519690A (en) | Safety tilting device for bed of dump truck | |
| JPS56167846A (en) | Fuel injection apparatus | |
| GB1413766A (en) | Hydraulic control apparatus | |
| JPS52132276A (en) | Deceleration perception type brake oil hydraulic control valve | |
| JPS5631507A (en) | Preventive circuit for buckling in hydraulic cylinder | |
| JPS56148693A (en) | Rated displacement oil pump | |
| JPS5628026A (en) | Oil hydraulic drive controller for vehicle transporting powdery or granular substance | |
| JPS5568433A (en) | Interference preventive device of bed and crane boom of dump truck with crane | |
| JPS55115603A (en) | Pressure-compensation controlling system for electro- hydraulic servo pressurizing apparatus | |
| JPS53118673A (en) | Load-responsive hydraulic control valve in dual-circuitry brake system for vehicle | |
| JPS5527510A (en) | Apparatus for accumulating pressure in accumulator | |
| JPS5590702A (en) | Accumulating circuit | |
| WO1998027359A3 (en) | Shock absorber containing biodegradable fluid | |
| JPS5380656A (en) | Hydraulic circuit for crane | |
| JPS5320125A (en) | Swivel joint incorporating flow control valve | |
| JPS56167545A (en) | Two-stage operation type double system master cylinder | |
| JPS56168953A (en) | Injection hydraulic apparatus for injection molding machine | |
| JPS5755280A (en) | Structure of half-sank multi-hulled ship | |
| JPS5357624A (en) | Safety device for cargo vehicle | |
| JPS56114726A (en) | Preventing device for overload of hydraulic crane | |
| JPS5333199A (en) | Automatic feeder for constant liquid volume | |
| JPS5722402A (en) | Hydraulic control circuit for tilting cab | |
| JPS5428979A (en) | Control circuit of variable capacity pump | |
| JPS5480952A (en) | Hydraulic elevator |