ES428618A1 - Load indicating systems for cranes - Google Patents
Load indicating systems for cranesInfo
- Publication number
- ES428618A1 ES428618A1 ES428618A ES428618A ES428618A1 ES 428618 A1 ES428618 A1 ES 428618A1 ES 428618 A ES428618 A ES 428618A ES 428618 A ES428618 A ES 428618A ES 428618 A1 ES428618 A1 ES 428618A1
- Authority
- ES
- Spain
- Prior art keywords
- angle
- transducer
- boom
- warning
- limits
- 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.)
- Expired
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C23/00—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes
- B66C23/88—Safety gear
- B66C23/90—Devices for indicating or limiting lifting moment
- B66C23/905—Devices for indicating or limiting lifting moment electrical
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Jib Cranes (AREA)
- Forklifts And Lifting Vehicles (AREA)
Abstract
An improved system for jib angle indication and warning for a crane, including: a jib angle transducer to produce an analog output proportional to the jib angle position, a sensitive jib angle meter to provide a visual indication of the boom position within a 90 degree range from a fully vertical to a fully horizontal position, warning means for selected high and low limits of the boom angle to indicate respective upper and lower limits of the boom position defining a allowable operating margin; main circuit means coupled to the transducer and warning means to drive them, and variable means coupled to the manually selectable warning means to set said upper and lower angle limits, in which the improvement comprises: coupled test circuit means switchable with said main circuit means and said transducer to generate a slowly increasing signal corresponding to a simulated transducer output rather than the actual output thereof, to drive the meter throughout its operating range including the high and low boom angle, to allow a crane operator to observe meter operation. (Machine-translation by Google Translate, not legally binding)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US382402A US3866200A (en) | 1973-07-25 | 1973-07-25 | Load measuring and overload warning system |
| US382403A US3893093A (en) | 1973-07-25 | 1973-07-25 | Crane boom angle indication and warning system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| ES428618A1 true ES428618A1 (en) | 1977-01-01 |
Family
ID=27009745
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| ES428618A Expired ES428618A1 (en) | 1973-07-25 | 1974-07-24 | Load indicating systems for cranes |
Country Status (8)
| Country | Link |
|---|---|
| JP (1) | JPS532791B2 (en) |
| BR (1) | BR7406147D0 (en) |
| DE (1) | DE2435686A1 (en) |
| ES (1) | ES428618A1 (en) |
| FR (1) | FR2245565B1 (en) |
| GB (1) | GB1479031A (en) |
| IT (1) | IT1018262B (en) |
| NL (1) | NL7409990A (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2738307A1 (en) * | 1977-08-25 | 1979-03-08 | Koepp Elektronik Gmbh | Electronic monitoring system for crane - evaluates load moment signal fed to threshold device connected to motor control |
| ES510129A0 (en) * | 1982-03-04 | 1983-01-16 | Empresa Nac Hulleras Norte | "EQUIPMENT FOR CONTROL OF CABLES-GUIDE". |
| KR102543057B1 (en) | 2015-03-31 | 2023-06-14 | 세키스이가가쿠 고교가부시키가이샤 | Cross-linked polyolefin-based resin foam |
| CN113091966A (en) * | 2021-03-01 | 2021-07-09 | 中煤第七十二工程有限公司 | Load controller |
-
1974
- 1974-07-16 GB GB3139374A patent/GB1479031A/en not_active Expired
- 1974-07-23 JP JP8455174A patent/JPS532791B2/ja not_active Expired
- 1974-07-24 FR FR7425732A patent/FR2245565B1/fr not_active Expired
- 1974-07-24 NL NL7409990A patent/NL7409990A/en unknown
- 1974-07-24 DE DE19742435686 patent/DE2435686A1/en active Pending
- 1974-07-24 ES ES428618A patent/ES428618A1/en not_active Expired
- 1974-07-25 BR BR614774A patent/BR7406147D0/en unknown
- 1974-07-25 IT IT1289774A patent/IT1018262B/en active
Also Published As
| Publication number | Publication date |
|---|---|
| JPS532791B2 (en) | 1978-01-31 |
| BR7406147D0 (en) | 1975-04-22 |
| FR2245565A1 (en) | 1975-04-25 |
| JPS5050966A (en) | 1975-05-07 |
| NL7409990A (en) | 1975-01-28 |
| DE2435686A1 (en) | 1975-02-13 |
| AU7158774A (en) | 1976-01-29 |
| GB1479031A (en) | 1977-07-06 |
| FR2245565B1 (en) | 1978-08-11 |
| IT1018262B (en) | 1977-09-30 |
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