Rope releasing control method for steel wire rope

Abstract

The invention provides a rope releasing control method for a steel wire rope. The remaining length of the steel wire rope is determined by calculating the total number of turns and the number of released turns of the steel wire rope, so that the released length of the steel wire rope can be determined by subtracting the remaining length from the total length, the calculation process is simple, the calculation result is clear, and the released length of the steel wire rope is compared with the preset released length of the steel wire rope. Therefore, whether the releasing length of the steel wire rope is within the control range or not is determined, the steel wire rope is wound or unwound according to the actual situation, winding and unwinding of the steel wire rope are controlled conveniently, accidents of a winch caused when the releasing length of the steel wire rope exceeds the preset range are avoided, and the releasing length of the steel wire rope can be strictly controlled; and the stability of goods is ensured.

Description

Technical Field

[0001] The invention relates to the technical field of winch wire rope control, and in particular to a wire rope release control method. Background Art

[0002] In recent years, science and technology have been changing with each passing day, and various large and super large projects have emerged one after another. In order to meet the needs of these projects, engineering technicians have designed and manufactured many large-tonnage winches. These winches are widely used in the lifting industry and marine engineering. This kind of heavy winch not only has a large pulling force, but also has a common feature that the steel wire is very long, some of which are up to several thousand meters.

[0003] Due to the uncertainty of factors such as waves and current speed, the length of the winch wire rope needs to be strictly controlled to maintain the stability of the winch wire rope and cargo. This requires accurate measurement of the length of the winch wire rope. Summary of the invention

[0004] The present invention provides a wire rope release control method, which compares the current released length of the wire rope with a preset release length to determine whether the released length of the wire rope is within a control range, so that the released length of the wire rope can be strictly controlled to ensure the stability of the goods.

[0005] To achieve the above object, the technical solution of the present invention is: a wire rope release control method, the specific steps include: (1) Calculate the total number of turns S of the wire rope based on the total length D of the wire rope, the total number of layers of the wire rope wound on the winch, and the number of turns Q of each layer of the wire rope wound on the winch.

[0006] (2) Calculate the number of turns F of the wire rope to be paid out.

[0007] (3) Determine the layer number B of the wire rope based on the number of turns F of the wire rope that has been paid out.

[0008] (4) Calculate the remaining total length C of the wire rope based on the current layer number B of the wire rope.

[0009] (5) Determine the current length H of the wire rope to be released based on the remaining total length C of the wire rope.

[0010] (6) By comparing the current length of the wire rope released with the preset length of the wire rope released, confirm whether the deviation is within the control range.

[0011] (7) If the deviation is within the control range, it means that the length of the wire rope currently released is accurate and there is no need to continue releasing the rope.

[0012] (8) If the deviation is greater than the control range, the winch is controlled to reel in the rope to prevent the wire rope from being released too much.

[0013] (9) If the deviation is less than the control range, the winch is controlled to continue releasing the rope so that the length of the wire rope released is within the control range.

[0014] The above method determines the remaining length of the wire rope by calculating the total number of turns and the number of turns released of the wire rope. Thus, the length of the wire rope released can be confirmed by subtracting the remaining length from the total length. The calculation process is simple and the calculation result is clear. By comparing the released length of the wire rope with the preset released length of the wire rope, it is confirmed whether the released length of the wire rope is within the control range, and then the wire rope is reeled in or released according to the actual situation, thereby facilitating the control of the reeling in and releasing of the wire rope, avoiding accidents caused by the winch when the wire rope is released beyond the preset range, so that the released length of the wire rope can be strictly controlled to ensure the stability of the cargo.

[0015] Furthermore, step (1) specifically includes the total number of turns of the wire rope S = (M-1) × Q + Q M .

[0016] Among them, M is the layer number of the outermost wire rope.

[0017] With the above settings, the total number of turns of the wire rope can be calculated.

[0018] Furthermore, step (2) specifically includes: (21) Number of wire rope turns F = (encoder current value - encoder initial value) ÷ value of winch rotation one circle.

[0019] The encoder is arranged on the drum of the winch. When the winch rotates, the encoder rotates along with the winch and records the number of rotations of the winch. When the winch rotates one circle, the encoder records a value once.

[0020] The above settings, through the setting of the encoder, make it possible to clearly record the number of winch rotations, thereby facilitating the calculation of the length of the wire rope. Furthermore, step (3) specifically includes: (31) The current layer number of the wire rope is B = (S-F) ÷ Q.

[0021] The total number of layers of the wire rope is the total number of turns of the wire rope S ÷ the number of turns of each layer of the wire rope Q, and (S-F) is the number of turns of the wire rope currently remaining.

[0022] (32) The result calculated in step (31) is rounded down, and the rounded result + 1 is the layer number B where the wire rope is currently located.

[0023] (33) Assume that the number of layers after rounding in step (32) is O, then B-1=O.

[0024] (34) Calculate the number of wire rope turns P = O × Q for the remaining layers except layer B.

[0025] (35) Calculate the number of wire rope turns Q for layer B B = (S - F) - P.

[0026] With the above settings, the number of layers where the wire rope is located is confirmed by calculation.

[0027] Furthermore, step (4) specifically includes: (41) Calculate the total length Z of the wire rope with layer number B B =Q B ×L B .

[0028] Among them, L B It is the length of one circle of wire rope with layer number B.

[0029] (42) Calculate the total length of the remaining layers of wire rope excluding layer B: D B-1 =Z O + Z O-1 .

[0030] Among them, Z O is the total length of the Oth layer of wire rope, Z O-1 It is the sum of the total lengths of all layers of wire ropes before the Oth layer.

[0031] (43) Calculate the remaining total length of the wire rope C = Z B + D B-1 .

[0032] Among them, Z B It is the total length of the wire rope in the layer B where the wire rope is currently located.

[0033] With the above settings, the remaining total length of the wire rope is confirmed by calculation.

[0034] Furthermore, step (5) specifically includes releasing the wire rope with a length H=DC.

[0035] With the above settings, the length of the wire rope released is confirmed by calculation. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 It is a working principle diagram of the present invention. DETAILED DESCRIPTION

[0037] The present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0038] like Figure 1As shown, a method for controlling the release of a steel wire rope comprises the following specific steps: (1) The total number of turns S of the steel wire rope is calculated according to the total length D of the steel wire rope, the total number of layers of the steel wire rope wound on the winch, and the number of turns Q of each layer of the steel wire rope wound on the winch. In this embodiment, the total length D of the steel wire rope, the total number of layers of the steel wire rope wound on the winch, and the number of turns Q of each layer of the steel wire rope wound on the winch are predetermined values.

[0039] (2) Calculate the number of turns F of the wire rope to be paid out.

[0040] (3) Determine the layer number B of the wire rope based on the number of turns F of the wire rope that has been paid out.

[0041] (4) Calculate the remaining total length C of the wire rope based on the current layer number B of the wire rope.

[0042] (5) Determine the length H of the wire rope to be released based on the remaining total length C of the wire rope.

[0043] (6) By comparing the current length of the wire rope released with the preset length of the wire rope released, confirm whether the deviation is within the control range.

[0044] (7) If the deviation is within the control range, it means that the length of the wire rope currently released is accurate and there is no need to continue releasing the rope.

[0045] (8) If the deviation is greater than the control range, the winch is controlled to reel in the rope to prevent the wire rope from being released too much.

[0046] (9) If the deviation is less than the control range, the winch is controlled to continue releasing the rope so that the length of the wire rope released is within the control range.

[0047] Step (1) specifically includes the total number of turns of the wire rope S = (M-1) × Q + Q M .

[0048] Among them, M is the layer number of the outermost wire rope.

[0049] Step (2) specifically includes: (21) Number of wire rope turns F = (encoder current value - encoder initial value) ÷ value of winch rotation one circle.

[0050] The encoder is arranged on the drum of the winch. When the winch rotates, the encoder rotates along with the winch and records the number of rotations of the winch. When the winch rotates one circle, the encoder records a value once.

[0051] The encoder is set to clearly record the number of winch rotations, making it easier to calculate the length of the wire rope. Step (3) specifically includes: (31) The current layer number of the wire rope is B = (S-F) ÷ Q.

[0052] The total number of layers of the wire rope is the total number of turns of the wire rope S ÷ the number of turns of each layer of the wire rope Q, and (S-F) is the number of turns of the wire rope currently remaining.

[0053] (32) The result calculated in step (31) is rounded down, and the rounded result + 1 is the layer number B where the wire rope is currently located.

[0054] (33) Assume that the number of layers after rounding in step (32) is O, then B-1=O.

[0055] (34) Calculate the number of wire rope turns P = O × Q for the remaining layers except layer B.

[0056] (35) Calculate the number of wire rope turns Q for layer B B = (S - F) - P.

[0057] Step (4) specifically includes: (41) Calculate the total length Z of the wire rope with layer number B B =Q B ×L B .

[0058] Among them, L B It is the length of one circle of wire rope with layer number B.

[0059] (42) Calculate the total length of the remaining layers of wire rope excluding layer B: D B-1 =Z O + Z O-1 .

[0060] Among them, Z O is the total length of the Oth layer of wire rope, Z O-1 It is the sum of the total lengths of all layers of wire ropes before the Oth layer.

[0061] (43) Calculate the remaining total length of the wire rope C = Z B + D B-1 .

[0062] Among them, Z B It is the total length of the wire rope in the layer B where the wire rope is currently located.

[0063] Step (5) specifically includes releasing the wire rope length H=DC.

[0064] The beneficial effects of the present invention are as follows: the remaining length of the wire rope is determined by calculating the total number of turns and the number of turns released of the wire rope, and thus the length of the wire rope released can be confirmed by subtracting the remaining length from the total length. The calculation process is simple and the calculation result is clear. By comparing the released length of the wire rope with the preset released length of the wire rope, it is confirmed whether the released length of the wire rope is within the control range, and then the wire rope is reeled in or released according to the actual situation, thereby facilitating the control of the reeling in and releasing of the wire rope, avoiding accidents caused by the winch when the wire rope is released beyond the preset range, and making it possible to strictly control the released length of the wire rope to ensure the stability of the cargo.

Claims

1. A method for controlling the release of a steel wire rope, characterized in that: The specific steps include: (1) Calculate the total number of turns S of the wire rope based on the total length D of the wire rope, the total number of layers of the wire rope wound on the winch, and the number of turns Q of each layer of the wire rope wound on the winch; (2) Calculate the number of turns F of the wire rope; (3) Determine the layer number B of the wire rope based on the number of turns F of the wire rope released; (4) Calculate the remaining total length C of the wire rope based on the current layer number B of the wire rope; (5) Determine the current length H of the released wire rope based on the remaining total length C of the wire rope; (6) By comparing the current released wire rope length with the preset wire rope release length, confirm whether the deviation is within the control range; (7) If the deviation is within the control range, it means that the length of the currently released wire rope is accurate and there is no need to continue releasing the rope; (8) If the deviation is greater than the control range, the winch is controlled to retract the rope to prevent the wire rope from being released too much; (9) If the deviation is less than the control range, the winch is controlled to continue releasing the rope so that the length of the wire rope released is within the control range.

2. A wire rope release control method according to claim 1, characterized in that: Step (1) specifically includes the total number of turns of the wire rope S = (M-1) × Q + Q M ; Among them, M is the layer number of the outermost wire rope.

3. A wire rope release control method according to claim 1, characterized in that: Step (2) specifically includes: (21) Number of wire rope turns F = (encoder current value - encoder initial value) ÷ value of winch rotation one circle; The encoder is arranged on the drum of the winch. When the winch rotates, the encoder rotates along with the winch and records the number of rotations of the winch. When the winch rotates one circle, the encoder records a value once.

4. A wire rope release control method according to claim 3, characterized in that: Step (3) specifically includes: (31) The current layer number of the wire rope B = (S-F) ÷ Q; The total number of layers of the wire rope is the total number of turns of the wire rope S ÷ the number of turns of each layer of the wire rope Q, and (S-F) is the number of turns of the wire rope currently remaining; (32) The result calculated in step (31) is rounded down, and the rounded result + 1 is the layer number B where the wire rope is currently located; (33) Assume the number of layers after rounding in step (32) is O, then B-1=O; (34) Calculate the number of wire rope turns P = O × Q for the remaining layers except layer B; (35) Calculate the number of wire rope turns Q for layer B B = (S - F) - P.

5. A wire rope release control method according to claim 4, characterized in that: Step (4) specifically includes: (41) Calculate the total length Z of the wire rope with layer number B B =Q B ×L B ; Among them, L B is the length of one turn of wire rope with layer number B; (42) Calculate the total length of the remaining layers of wire rope excluding layer B: D B-1 =Z O + Z O-1 ; Among them, Z O is the total length of the Oth layer of wire rope, Z O-1 It is the sum of the total lengths of all layers of wire ropes before the Oth layer; (43) Calculate the remaining total length of the wire rope C = Z B + D B-1 ; Among them, Z B It is the total length of the wire rope in the layer B where the wire rope is currently located.

6. A wire rope release control method according to claim 5, characterized in that: Step (5) specifically includes releasing the steel wire rope to a length H=DC of the steel wire rope.

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