RO101301A2 - Differential limiter device - Google Patents
Differential limiter deviceInfo
- Publication number
- RO101301A2 RO101301A2 RO1988132964A RO13296488A RO101301A2 RO 101301 A2 RO101301 A2 RO 101301A2 RO 1988132964 A RO1988132964 A RO 1988132964A RO 13296488 A RO13296488 A RO 13296488A RO 101301 A2 RO101301 A2 RO 101301A2
- Authority
- RO
- Romania
- Prior art keywords
- clamshell
- cranes
- block
- reductors
- closing
- Prior art date
Links
Landscapes
- Control And Safety Of Cranes (AREA)
- Carriers, Traveling Bodies, And Overhead Traveling Cranes (AREA)
- Forklifts And Lifting Vehicles (AREA)
- Gear-Shifting Mechanisms (AREA)
- Mechanical Operated Clutches (AREA)
Abstract
This invention consists of a semi-automatic controlled device designed to be used on traditional cranes and bridge cranes that are equipped with twin mechanisms and clamshell. Alternately, it can be used on cranes with main or auxiliary lifting block for which it is not allowed to lift the main hook block above the auxiliary block when monitoring synchronisation.The device comprises two planetary reductors mounted in a housing; the two disks fixed at the reductors' ends rotate synchronically when the load block is moved up and down; when the clamshell is closed and opened again, the disk engaged from the lifting drum stays still, while the disk engaged from the closing/opening drum rotates by an angle corresponding to the closing travel of the clamshell. The electrical signal generated by this relative movement is picked by sensors sliding inside the sensor-holder arm mounted on the housing circumference.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
RO1988132964A RO101301A2 (en) | 1988-04-07 | 1988-04-07 | Differential limiter device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
RO1988132964A RO101301A2 (en) | 1988-04-07 | 1988-04-07 | Differential limiter device |
Publications (2)
Publication Number | Publication Date |
---|---|
RO101301B1 RO101301B1 (en) | 1991-05-31 |
RO101301A2 true RO101301A2 (en) | 1991-10-28 |
Family
ID=20121437
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
RO1988132964A RO101301A2 (en) | 1988-04-07 | 1988-04-07 | Differential limiter device |
Country Status (1)
Country | Link |
---|---|
RO (1) | RO101301A2 (en) |
-
1988
- 1988-04-07 RO RO1988132964A patent/RO101301A2/en unknown
Also Published As
Publication number | Publication date |
---|---|
RO101301B1 (en) | 1991-05-31 |
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