JPS57132025A - Safety device for crane - Google Patents
Safety device for craneInfo
- Publication number
- JPS57132025A JPS57132025A JP1780481A JP1780481A JPS57132025A JP S57132025 A JPS57132025 A JP S57132025A JP 1780481 A JP1780481 A JP 1780481A JP 1780481 A JP1780481 A JP 1780481A JP S57132025 A JPS57132025 A JP S57132025A
- Authority
- JP
- Japan
- Prior art keywords
- rope
- load
- distance
- diameter
- tension
- 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
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01G—WEIGHING
- G01G19/00—Weighing apparatus or methods adapted for special purposes not provided for in the preceding groups
- G01G19/14—Weighing apparatus or methods adapted for special purposes not provided for in the preceding groups for weighing suspended loads
- G01G19/20—Weighing apparatus or methods adapted for special purposes not provided for in the preceding groups for weighing suspended loads for weighing unbalanced loads
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Control And Safety Of Cranes (AREA)
- Jib Cranes (AREA)
- Force Measurement Appropriate To Specific Purposes (AREA)
Abstract
PURPOSE:To make crane work safe by correcting the load detected with a load gage by the abrasion of a wire rope with an operator which calculates the correction factor corresponding to the change in rope diameter. CONSTITUTION:During load detection with a 3-point sheave type load gage 20, the side end part of an arm 24 is pressurized to the contactor 31 of a load cell 30 according to the tension T of a rope 12, and the load cell 30 detects the pressurizing force P by this arm 24 and outputs the signal corresponding to the tension T. A rope diameter detector 40 is disposed between the arm 24 and moving sheave 23 of te gage 20, and a bracket 41 is secured to the end of the shaft 23a of the sheave 23 by welding or the like. The distance between the brackets 41 and 45 changes according to the central distance of the sheaves 23 and a roller 43, and since the center distance thereof changes according to the diameter (d) of a wire rope 12, a rope diameter detector 40 is so constituted as to detect the rope diameter (d) by detecting the distance between the brackets 41 and 45. This tension T is applied to an operator 106, by which the rope diameter (d) is corrected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1780481A JPS57132025A (en) | 1981-02-09 | 1981-02-09 | Safety device for crane |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1780481A JPS57132025A (en) | 1981-02-09 | 1981-02-09 | Safety device for crane |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS57132025A true JPS57132025A (en) | 1982-08-16 |
Family
ID=11953906
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1780481A Pending JPS57132025A (en) | 1981-02-09 | 1981-02-09 | Safety device for crane |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS57132025A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60197588A (en) * | 1984-03-21 | 1985-10-07 | 東急車輌製造株式会社 | Method of detecting hung load of crane |
| CN111847244A (en) * | 2020-06-11 | 2020-10-30 | 中联重科股份有限公司 | Method for measuring hanging load of crane |
-
1981
- 1981-02-09 JP JP1780481A patent/JPS57132025A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60197588A (en) * | 1984-03-21 | 1985-10-07 | 東急車輌製造株式会社 | Method of detecting hung load of crane |
| CN111847244A (en) * | 2020-06-11 | 2020-10-30 | 中联重科股份有限公司 | Method for measuring hanging load of crane |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US4508251A (en) | Cable pulling/feeding apparatus | |
| EP2753568B1 (en) | Crane control | |
| FI74685B (en) | ANORDNING FOER INDIKERING AV SLACK PAO REP. | |
| CA2224027A1 (en) | Procedure and apparatus for the measurement of elevator load | |
| US3388070A (en) | Method and apparatus for highline tension control | |
| JPS57132025A (en) | Safety device for crane | |
| US6068240A (en) | Method for regulating the operation of a load compensation device and load compensation using the method | |
| GB2063494A (en) | Load Sensing Means for Ropes and Cables | |
| GB1532826A (en) | Lifting boom with overload sensor | |
| CA1083276A (en) | Indication means for indicating suitable conditions for the transfer of loads between two stations movable relative to each other in a vertical plane | |
| JP6939994B2 (en) | Groove wear detector | |
| KR102077926B1 (en) | Cable damage detecting apparatus for continuous ship unloader | |
| US2646273A (en) | Load weight indicator for cranes | |
| CN217437566U (en) | Crane load detection device with strong anti-interference capability | |
| CN210603247U (en) | Drum displacement detection alarm device | |
| CA2092143A1 (en) | Sensing Device for Indicating Improper Orientation of a Hoist Lifting Line | |
| MX9603632A (en) | Directional indicating device for detecting improper orientation of a hoist lifting line. | |
| JPS54108332A (en) | Detector for elevator derailment | |
| SU647575A1 (en) | Winch testing stand | |
| CN111517198B (en) | Force measuring device for clamping elevator suspension device | |
| CN219860231U (en) | Weight measuring and adjusting device for tower crane | |
| CN221565576U (en) | Tower crane safety auxiliary driving system | |
| JP3762452B2 (en) | Main spring anomaly detector for automatic circulation cableway gripper | |
| CN219452793U (en) | Chain tensioning protection device | |
| US20220002118A1 (en) | Crane |