WO2019083353A4 - Method for hoisting objects and related self-correcting lifting-block - Google Patents
Method for hoisting objects and related self-correcting lifting-block Download PDFInfo
- Publication number
- WO2019083353A4 WO2019083353A4 PCT/NL2018/000018 NL2018000018W WO2019083353A4 WO 2019083353 A4 WO2019083353 A4 WO 2019083353A4 NL 2018000018 W NL2018000018 W NL 2018000018W WO 2019083353 A4 WO2019083353 A4 WO 2019083353A4
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- block
- lifting
- rotating
- sheave
- axis
- Prior art date
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C13/00—Other constructional features or details
- B66C13/04—Auxiliary devices for controlling movements of suspended loads, or preventing cable slack
- B66C13/06—Auxiliary devices for controlling movements of suspended loads, or preventing cable slack for minimising or preventing longitudinal or transverse swinging of loads
- B66C13/063—Auxiliary devices for controlling movements of suspended loads, or preventing cable slack for minimising or preventing longitudinal or transverse swinging of loads electrical
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C13/00—Other constructional features or details
- B66C13/18—Control systems or devices
- B66C13/46—Position indicators for suspended loads or for crane elements
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Automation & Control Theory (AREA)
- Jib Cranes (AREA)
- Control And Safety Of Cranes (AREA)
Abstract
The present invention relates to a method, and a related hoist-block, for correcting deviations in the position of a lifting-block (5) which forms part of a crane (1) which crane further comprises a boom (2) with an upper-block (4), whereby both the upper-block and the lifting-block each comprise at least one sheave (7), which sheave is rotatable over a substantially horizontal rotating-axis and around which sheave a wire rope (3) runs, whereby working with loads can be done almost continuously with the least possible rotating of the ropes and of the lifting-block. The method comprises the steps of detecting of any deviation in position of the lifting-block, in operation, with respect to the calibrated position and/or with respect to the position of the upper-block and correcting the position of the lifting-block when the detected deviation in the position is greater than a preset value by shifting the center of gravity of the lifting-block in such a way to cause the deviation in the position becoming smaller than the preset value.
Claims
1. A method for correcting deviations in the position of a lifting-block which forms a part of a crane which crane further comprises a boom with an upper-block, whereby each of the upper-block and the lifting-block comprises at least one sheave, which sheave is rotatable around a substantially horizontal rotating-axis and over which sheave runs a wire rope, whereby said lifting-block is, in a calibrated position, substantially parallel to the upper-block, whereby the rotating-axes of the sheaves of both blocks are substantially parallel to one another, which method comprises the step of a. detecting of any deviation in position of the lifting-block, in operation, with respect to the calibrated position and/or with respect to the position of the upper-block, characterized in that the method further comprises the step of b. correcting the position of the lifting-block when the detected deviation in the position is greater than a preset value - by shifting the center of gravity of the lifting-block in such a way to cause the deviation in the position becoming smaller than the preset value.
2. The method according to claim 1, characterized in that step a. is carried out by means of detecting a rotating-angle formed by the rotating axis of the sheave, or the projection thereof, of the lifting-block with the rotatitng axis of the sheaveof the upper-block in the same horizontal plane.
3. The method according to claim 1, characterized in that step a. is carried out by means of detecting a rotating-angle formed by the rotating axis of the sheave, or the projection thereof, of the lifting-block with the rotating axis of the sheave of the upper-block in the same vertical plane.
4. The method according to claim 1, characterized in that step a. is carried out by means of detecting a rotating-angle formed by the rotating axis of the sheave, or the projection thereof, of the lifting-block with the rotating axis of the sheaveof the
20 upper-block in the same horizontal plane - and detecting a rotating-angle formed by the rotating axis of the sheave, or the projection thereof, of the lifting-block with the rotating axis sheaveof the upper-block in the same vertical plane.
5. The method according to any of the claims 2 - 4, characterized in that correcting the position of the lifting-block in step b. is carried out by means of shifting the center of gravity of the lifting-block in such a way to cause the said rotating-angle becoming smaller than the said preset value.
6. The method according to claim 4 or 5, characterized in that shifting the center of gravity of the lifting-block is carried out by means of a steerable counterweight toward one side of the lifting-block.
7. A lifting-block, adapted to be used in a crane which further comprises a boom with an upper-block, whereby each of the upper-block and the lifting-block comprises at least one sheave which sheave is rotatable around a substantially horizontal rotating-axis and over which sheave runs a wire rope, whereby said lifting-block, further comprises:
- detection means for detecting any deviation in position of the lifting-block, in operation, with respect to the calibrated position and/or with respect to the position of the upper-block, characterized in that the lifting-block further comprises
- correction means for correcting the position of the lifting-block when said deviation in the position is greater than a preset value, which correction means are adapted to shift the center of gravity of the lifting-block in such a way to cause the deviation in the position becoming smaller than the preset value.
8. The lifting-block according to claim 7, characterized in that the detection means comprise one or more cameras, compasses, and/or spirit levels which are adapted to detect at least one of the following angles: a rotating-angle formed by the rotating- axis of the sheave, or the projection thereof, of the lifting-block with the rotating-
21 axis of the sheave of the upper-block in the same horizontal plane - and a rotating- angle formed by the rotating axis of the sheave, or the projection thereof, of the lifting-block forms with the rotating axis of the sheaveof the upper-block in the same vertical plane.
9. The lifting-block according to claim 7 or 8, characterized in that the correction means comprise a cylinder and a guide rail, whereby the cylinder can controllably move on the rail in the direction of the slower or the faster side of the lifting-block and thus causing the center of gravity of the lifting-block to be shifted.
10. The lifting-block according to claim 7 or 8, characterized in that the correction means comprise a propulsive pendulum, whereby the pendulum has an arm and a certain weight and can freely swing toward the slower or the faster side of the lifting-block and thus causing the center of gravity of the lifting-block to be shifted.
11. A crane for lifting and lowering of objects comprising a boom andan upper-block characterized in that the crane further comprises a lifting-block according to any of the claims 7 - 10.
12. A crane for lifting and lowering of objects comprising a boom, an upper-block and a lifting-block, whereby each of the upper-block and the lifting-block comprises at least one sheave, which sheave is rotatable around a substantially horizontal rotating-axis and over which sheave runs a wire rope, whereby said lifting-block, in a calibrated position, is substantially parallel to the upper-block, whereby the rotating-axes of the sheaves of both blocks are substantially parallel to one another, whereby the crane further comprises detection means for detecting deviation in positon of the lifting-block, in operation, with respect to the calibrated position and/or with respect to the position of the upper-block - characterized in that the lifting-block further comprises correction means for correcting the position of the lifting-block, which correction means cause the center of gravity of the lifting- block to be shifted in such a way to cause the deviation in the position becoming smaller than a preset value.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NL1042605A NL1042605B1 (en) | 2017-10-24 | 2017-10-24 | Method for hoisting objects and associated self-correcting lifting block. |
| NL1042605 | 2017-10-24 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| WO2019083353A1 WO2019083353A1 (en) | 2019-05-02 |
| WO2019083353A4 true WO2019083353A4 (en) | 2019-06-20 |
Family
ID=64734096
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/NL2018/000018 WO2019083353A1 (en) | 2017-10-24 | 2018-10-23 | Method for hoisting objects and related self-correcting lifting-block |
Country Status (2)
| Country | Link |
|---|---|
| NL (1) | NL1042605B1 (en) |
| WO (1) | WO2019083353A1 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110138409B (en) * | 2019-05-30 | 2020-07-14 | 金居建设发展股份有限公司 | Intelligent tower crane operation deflection calibration system |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101723239B (en) * | 2009-11-20 | 2012-05-02 | 三一汽车制造有限公司 | Hanging hook attitude detection device and crane |
| CN103213902B (en) * | 2013-01-10 | 2015-10-07 | 林汉丁 | The monitoring of suspension hook drift angle detecting/monitoring, collaborative party, magnetic bearing monitoring device and hoisting crane |
| CN106219408B (en) * | 2016-08-31 | 2017-12-08 | 北汽福田汽车股份有限公司 | Crane hanging component angle detection device and crane |
-
2017
- 2017-10-24 NL NL1042605A patent/NL1042605B1/en not_active IP Right Cessation
-
2018
- 2018-10-23 WO PCT/NL2018/000018 patent/WO2019083353A1/en active Application Filing
Also Published As
| Publication number | Publication date |
|---|---|
| WO2019083353A1 (en) | 2019-05-02 |
| NL1042605B1 (en) | 2019-05-01 |
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