Tension balance system and method for steel wire ropes on friction hoisting driving end of ultra-deep well

A tension balance system for steel wire ropes on a friction hoisting driving end of a well, comprising:

• a friction wheel (1);
• a left guiding wheel (2-1);
• a right guiding wheel (2-2);
• left steel wire ropes (3-1);
• right steel wire ropes (3-2);
• left adjustment wheels (4-1);
• right adjustment wheels (4-2);
• a left rewinding wheel (5-1);
• a right rewinding wheel (5-2);
• left adjustment oil cylinders (6-1);
• right adjustment oil cylinders (6-2);
• a hydraulic pipeline (7);
• a pump station (8);
• a pipeline switch group (9);
• upper limiting switches;
• lower limiting switches (10-2);
• a left hoisting container (11-1);
• a right hoisting container (11-2), balance ropes (12);
• and
• reels (13), wherein
• the friction wheel (1) is disposed in the middle;
• the left adjustment wheels (4-1), the left rewinding wheel (5-1), the right adjustment wheels (4-2), and the right rewinding wheel (5-2) are circularly distributed around the friction wheel (1);
• the left guiding wheel (2-1) and the right guiding wheel (2-2) are horizontally aligned and respectively symmetrically disposed on lower left and lower right of the friction wheel (1);
• and a horizontal distance between a vertical tangent on which a right wheel rim of the left guiding wheel (2-1) is located and a vertical tangent on which a left wheel rim of the right guiding wheel (2-2) is located is a horizontal distance between the left hoisting container (11-1) and the right hoisting container (11-2);
• the left adjustment wheels (4-1) and the right adjustment wheels (4-2) are horizontally aligned and respectively symmetrically disposed on upper left and upper right of the friction wheel (1);
• the left rewinding wheel (5-1) is disposed between the left adjustment wheels (4-1) and the left guiding wheel (2-1), the right rewinding wheel (5-2) is disposed between the right adjustment wheels (4-2) and the right guiding wheel (2-2);
• and the left rewinding wheel (5-1) and the right rewinding wheel (5-2) are horizontally aligned and respectively symmetrically disposed on lower left and lower right of the friction wheel (1);
• a quantity of the left steel wire ropes (3-1) and a quantity of the right steel wire ropes (3-2) are the same and both are even numbers more than 2;
• one end of each of the left steel wire ropes (3-1) is connected to the right hoisting container (11-2);
• and the other end passes around the right guiding wheel (2-2), the friction wheel (1), the left rewinding wheel (5-1), the friction wheel (1), the left adjustment wheel (4-1), and the left guiding wheel (2-1) in sequence;
• and then is connected to the left hoisting container (11-1);
• one end of each of the right steel wire ropes (3-2) is connected to the right hoisting container (11-2);
• and the other end passes around the right guiding wheel (2-2), the right adjustment wheel (4-2), the friction wheel (1), the right rewinding wheel (5-2), the friction wheel (1), and the left guiding wheel (2-1) in sequence, and then is connected to the left hoisting container (11-1);
• tops of the left hoisting container (11-1) and the right hoisting container (11-2) are each fixedly provided with two reels (13);
• a left end and a right end of a steel wire rope corresponding to each of the adjustment wheels are connected to the left hoisting container (11-1) and the right hoisting container (11-2) by using the reels (13), and the reels (13) are each connected to two steel wire ropes;
• and
• both a quantity of the adjustment wheels and a quantity of the adjustment oil cylinders are the same as that of the steel wire ropes;
• both the left adjustment wheels (4-1) and the right adjustment wheels (4-2) have a degree of freedom of movement in a radial direction of the friction wheel (1);
• the left adjustment wheels (4-1) are connected to the left adjustment oil cylinders (6-1) to perform radial driving, the right adjustment wheels (4-2) are connected to the right adjustment oil cylinders (6-2) to perform radial driving;
• both the left adjustment oil cylinders (6-1) and the right adjustment oil cylinders (6-2) travel in the radial direction of the friction wheel (1), the adjustment oil cylinders are connected to the pump station (8) through the hydraulic pipeline (7);
• and the hydraulic pipeline (7) is provided with the pipeline switch group (9);
• and an outer side and an inner side of each of the left adjustment wheels (4-1) and the right adjustment wheels (4-2) in the radial direction of the friction wheel (1) are respectively provided with an upper limiting switch (10-1) and a lower limiting switch (10-2).