Fixed point hoisting device and method for large tonnage long-term suspension
A hoisting device and large tonnage technology, used in cranes, transportation and packaging, etc., can solve the problems of insufficient space size, limited hoisting tonnage of the workshop, and the effect of hoisting equipment on the test effect, so as to achieve high safety performance and ensure braking reliability. Effect
Inactive Publication Date: 2012-08-08
CHINA NEW ERA INT ENG CORP
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Problems solved by technology
[0009] In order to solve the problems of insufficient space size of the existing high-voltage laboratory, limited lifting tonnage of the factory building, and the influence of the lifting equipment on the test effect, the present invention provides a fixed-point lifting device and method for long-term suspension of large tonnage loads, so as to provide a super large indoor test space and meet general requirements. Test requirements, realize the insulation type test of the converter valve and other large-tonnage suspension load requirements, and the installation is very convenient
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[0041] figure 1 As shown, in the large-space laboratory composed of steel columns and steel roof trusses, a steel platform is set up in the area between the steel columns, and four 20-ton hoisting machines are placed on the steel platform. caused an upward pull. According to the calculation, set the steel beam guide fixed pulley 4 at a certain elevation between the steel columns, connect the guide fixed pulley 4 to fix the steel wire rope, set the steering fixed pulley 3 at the end of the steel roof truss and the position of the lifting point, and hoist the laser ranging installed on the steel frame 2 instrument, the four winches 5 are electrically connected to the control unit, the four winches 5 use variable frequency motors, and there are encoders at the reel ends of the four winches 5, the encoders are electrically connected to the control unit, and the encoders are used to provide the control unit with a lifting point position, determine the long-term suspension load lev...
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The invention relates to a fixed point hoisting device and a method for large tonnage long-term suspension. The method is as below: 1. detecting whether a command exists; 2. determining whether a command is a hoisting command; if it is not, turning to a next step; if it is, turning to the hoisting command; 3. determining whether the command is a descending command; if it is not, turning to a next step; if it is, turning to step 12 for the descending command; 4. determining whether the command is a stop command; if it is not, returning to the step 1; if it is, turning to a stop command; 5. turning to the stop command; 6. if it is a hoisting command, sending the hoisting command to four hoists; 7. detecting whether the hoisting speed of the four hoists are at a set value; 8. detecting whether a hoisting object is horizontal by a horizon sensor; 9. carrying out level detection to detect whether a shutdown signal exists; if it does not, continuing the step 8; 10. if a shutdown signal exists, sending the shutdown command to four hoists; 11. returning to the step 1; 12. if it is a descending command, sending the descending command to four hoists; 13. turning to the step 7; 14. if it is a stop command, returning to the step 10. The device can provide super large indoor test space, and is quite convenient for installation.
Description
technical field [0001] The invention belongs to the field of high-voltage and large-capacity power transmission and transformation research, and relates to the structural design of an ultra-high voltage laboratory for detection, especially a fixed-point lifting device and method for large-tonnage long-term suspended loads, which can meet the type test of high-voltage converter valves, that is, large-tonnage long-term UHV test chamber design for suspended load requirements. Background technique [0002] With the rapid development of my country's national economy, the power industry has also made considerable progress, but the power gap is still increasing. In order to meet the growing demand for electricity and inject surging power into economic development, in addition to vigorously building power plants, we must High-voltage, large-capacity power transmission and transformation systems are used to improve power transmission efficiency. [0003] Due to the economy of long-di...
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IPC IPC(8): B66C25/00
Inventor 李东生庄伟民吉小振王充
Owner CHINA NEW ERA INT ENG CORP