JPS5467953A - Mechanism for maintaining balance of crane truck - Google Patents
Mechanism for maintaining balance of crane truckInfo
- Publication number
- JPS5467953A JPS5467953A JP13340277A JP13340277A JPS5467953A JP S5467953 A JPS5467953 A JP S5467953A JP 13340277 A JP13340277 A JP 13340277A JP 13340277 A JP13340277 A JP 13340277A JP S5467953 A JPS5467953 A JP S5467953A
- Authority
- JP
- Japan
- Prior art keywords
- detector
- pressure
- balancing
- hanging
- cylinder
- 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
Landscapes
- Jib Cranes (AREA)
Abstract
PURPOSE: To improve the working property, by causing a balancing force without hanging up any counterweight.
CONSTITUTION: A detector 1 for detecting the length of a hanging boom 4 fitted with a hanger 9, and another detector 12 for detecting the pressure of a hanging cylinder 10 of the hanger 9 are provided to control a solenoid valve 22 of a pressure regulating valve 14 between a hydraulic pump 15 and a balancing cylinder 8 attached to a balancing boom 3. When a load 6 is hung up, the pressure caused by the hanging cylinder 10 and proportional to the load 6 is detected by the pressure detector 12. The solenoid valve 22 is controlled by the outputs of the pressure detector 12 and the length detector 11 to regulate the oil pressure supplied to the balancing cylinder 8 to automatically adjust the balancing force.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP13340277A JPS5467953A (en) | 1977-11-09 | 1977-11-09 | Mechanism for maintaining balance of crane truck |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP13340277A JPS5467953A (en) | 1977-11-09 | 1977-11-09 | Mechanism for maintaining balance of crane truck |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5467953A true JPS5467953A (en) | 1979-05-31 |
Family
ID=15103899
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP13340277A Pending JPS5467953A (en) | 1977-11-09 | 1977-11-09 | Mechanism for maintaining balance of crane truck |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5467953A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5670293A (en) * | 1979-11-07 | 1981-06-12 | Japan National Railway | Method of decreasing weight of shaft of crane car |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5125177U (en) * | 1974-08-14 | 1976-02-24 | ||
JPS5144248U (en) * | 1974-09-30 | 1976-04-01 |
-
1977
- 1977-11-09 JP JP13340277A patent/JPS5467953A/en active Pending
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5125177U (en) * | 1974-08-14 | 1976-02-24 | ||
JPS5144248U (en) * | 1974-09-30 | 1976-04-01 |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5670293A (en) * | 1979-11-07 | 1981-06-12 | Japan National Railway | Method of decreasing weight of shaft of crane car |
JPS5830878B2 (en) * | 1979-11-07 | 1983-07-01 | 日本国有鉄道 | Axle load reduction device for heavy handling vehicles |
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