Method for determining length of steel wire rope

Abstract

The invention provides a steel wire rope length determination method. The method comprises the steps of (1) calculating the cross section diameter J of each layer of steel wire rope on a winch; (2) calculating the length L of one circle of each layer of steel wire rope according to the cross section diameter J of each layer of steel wire rope; (3) calculating the total length Z of the steel wire rope of each layer; (31) calculating the total length ZM of the steel wire rope of the outermost layer M; (4) calculating the total length D of the steel wire rope; (5) calculating the total length DM-1 of the front (M-1) layers of steel wire ropes; (6) calculating the total length D of the steel wire rope; according to the method, the cross section diameter of the steel wire rope is calculated to determine the length of each layer of steel wire rope on the winch after the steel wire rope is wound around the winch for one circle, so that the total length of each layer of steel wire rope on the winch can be calculated, and the overall length of the steel wire rope can be calculated through the total length of each layer of steel wire rope; therefore, calculation is performed layer by layer, so that the calculation result is clear, and omissions are not easy to occur.

Description

Technical Field

[0001] The invention relates to the technical field of winch wire ropes, and in particular to a method for determining the length of a wire rope. Background Art

[0002] During the operation of engineering equipment containing cables (such as crane winches, etc.), the length of the wire rope of the winch is a very important parameter. Under different working conditions of engineering equipment, the length of the wire rope of the winch has a very important influence on the carrying capacity of the wire rope and the performance of the engineering equipment. Therefore, it is very necessary to detect and control the length of the wire rope of the winch.

[0003] If the length of the winch's rope release and retraction is to be controlled, the length parameter of the wire rope is also important. Its length is related to the accuracy of controlling the winch's rope release and retraction. At present, some existing technologies usually only select the length of a certain layer of wire rope as a reference for calculating the length of all layers of wire rope. Since the length of each layer of wire rope is different, it is easy to make calculation errors. Summary of the invention

[0004] The present invention provides a method for determining the length of a steel wire rope, which can accurately calculate the length of the steel wire rope and avoid the problem of calculation error caused by the different lengths of each layer of steel wire rope.

[0005] To achieve the above object, the technical solution of the present invention is: a method for determining the length of a steel wire rope, the specific steps comprising: (1) Calculate the cross-sectional diameter J of each layer of wire rope on the winch.

[0006] (2) Calculate the length L of one turn of each layer of wire rope based on the cross-sectional diameter J of each layer of wire rope.

[0007] (3) Calculate the total length Z of each layer of wire rope based on the length L of one turn of each layer of wire rope and the number of turns Q of each layer of wire rope.

[0008] (31) According to the number of windings Q of the outermost wire rope M Calculate the total length Z of the outermost layer M of the wire rope M .

[0009] (4) Calculate the total length D of the wire rope.

[0010] (5) Calculate the total length D of the first M-1 layers of wire rope M-1 .

[0011] (6) According to the total length Z of the outermost layer M M and the total length D of the first M-1 layer of wire rope M-1Calculate the total length of the wire rope D=Z M +D M-1 .

[0012] The above method calculates the cross-sectional diameter of the wire rope, and then determines the length of each layer of wire rope on the winch after it is wrapped around the winch once. From this, the total length of the wire rope of each layer on the winch can be calculated. The total length of the wire rope of each layer can be used to calculate the length of the entire wire rope. By calculating layer by layer, the calculation result is clear and not prone to omissions.

[0013] Furthermore, the cross-sectional diameter J of each layer of steel wire rope in step (1) specifically includes: The cross-sectional diameter J1 of the first layer of steel wire rope is obtained by adding the cross-sectional diameter of the winch and the cross-sectional radius of the first layer of steel wire rope.

[0014] The second layer of steel wire ropes is wound between two adjacent steel wire ropes in the first layer, the center of the second layer of steel wire ropes is located between the two adjacent steel wire ropes in the first layer, and the cross-sectional circle of the second layer of steel wire ropes is tangent to the cross-sectional circle of the steel wire ropes in the first layer.

[0015] A hypotenuse is formed between the center of the second layer of steel wire ropes and the center of the first layer of steel wire ropes, and an opposite side is formed at the intersection of a vertical line between two adjacent steel wire ropes in the first layer and the center of the second layer of steel wire ropes. The hypotenuse and the opposite side are connected through adjacent sides to form a right triangle.

[0016] Determine the length of the opposite side, A, using the Pythagorean theorem.

[0017] Calculate the cross-sectional diameter J2 of the second layer of steel wire rope according to the length of the opposite side.

[0018] Similarly, the cross-sectional diameter J of the wire rope of the Nth layer is N Perform calculations.

[0019] The calculation formula for the cross-sectional diameter of the Nth layer of wire rope is: J N =J1+J2×(N-1)×A.

[0020] Among them, J1 is the cross-sectional diameter of the first layer of steel wire rope, and J2 is the cross-sectional diameter of the second layer of steel wire rope.

[0021] With the above arrangement, the center position of the second layer of steel wire ropes can be calculated by the right triangle formed between the second layer of steel wire ropes and the first layer of steel wire ropes, thereby the cross-sectional diameters of all layers of steel wire ropes can be calculated.

[0022] Furthermore, the length L in step (2) is calculated as: L = π × J; the length L of one turn of the wire rope of the Nth layer is N =π×J N.

[0023] With the above settings, the length of one circle of wire rope can be calculated.

[0024] Furthermore, step (3) specifically includes the calculation formula of the total length Z of each layer of wire rope: Z=L×Q, and the Nth layer of wire rope is Z N =L N ×Q.

[0025] Step (31) specifically includes the total length Z of the outermost layer M of the wire rope M The calculation formula is: M =L M ×Q M .

[0026] Among them, L M It is the length of one circle of the outermost layer M of wire rope.

[0027] With the above settings, the total length of each layer of wire rope is calculated.

[0028] Furthermore, step (5) specifically includes the total length D of the first M-1 layers of steel wire ropes M-1 The calculation formula is: M-1 =Z N +Z N-1 .

[0029] Among them, Z N is the total length of the Nth layer of wire rope, the Mth layer is the outer layer of the Nth layer, then the Nth layer = the outermost layer M-1; Z N-1 It is the sum of the total lengths of all layers of wire ropes before the Nth layer.

[0030] With the above settings, the total length of the wire rope excluding the outermost layer is calculated. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is a working principle diagram of the present invention.

[0032] Figure 2 It is a schematic diagram for calculating the cross-sectional diameter of the steel wire rope of the present invention. DETAILED DESCRIPTION

[0033] The present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0034] like Figure 1 As shown, a method for determining the length of a steel wire rope comprises the following specific steps: (1) Calculate the cross-sectional diameter J of each layer of wire rope on the winch.

[0035] (2) Calculate the length L of one turn of each layer of wire rope based on the cross-sectional diameter J of each layer of wire rope.

[0036] (3) Calculate the total length Z of each layer of wire rope based on the length L of one turn of each layer of wire rope and the number of turns Q of each layer of wire rope.

[0037] (31) According to the number of windings Q of the outermost wire rope M Calculate the total length Z of the outermost layer M of the wire rope M .

[0038] (4) Calculate the total length D of the wire rope.

[0039] (5) Calculate the total length D of the first M-1 layers of wire rope M-1 .

[0040] (6) According to the total length Z of the outermost layer M M and the total length D of the first M-1 layer of wire rope M-1 Calculate the total length of the wire rope D=Z M +D M-1 .

[0041] The cross-sectional diameter J of each layer of steel wire rope in step (1) specifically includes: like Figure 2 As shown, the cross-sectional diameter J1 of the first layer of steel wire rope is obtained by adding the cross-sectional diameter of the winch 2 and the cross-sectional radius of the first layer of steel wire rope 1. In this embodiment, since the steel wire rope is wound on the winch, the cross section of the steel wire rope is located at the upper and lower ends of the cross section of the winch. Therefore, the cross-sectional radius of the steel wire rope is taken during calculation to calculate the cross-sectional diameter of the steel wire rope.

[0042] The second layer of steel wire ropes is wound between two adjacent steel wire ropes in the first layer, the center of the second layer of steel wire ropes is located between the two adjacent steel wire ropes in the first layer, and the cross-sectional circle of the second layer of steel wire ropes is tangent to the cross-sectional circle of the steel wire ropes in the first layer.

[0043] A hypotenuse α is formed between the center of the second layer of steel wire ropes and the center of the first layer of steel wire ropes, and an opposite side β is formed at the intersection of the vertical line between two adjacent steel wire ropes in the first layer and the center of the second layer of steel wire ropes. The hypotenuse and the opposite side are connected by the adjacent side θ to form a right triangle.

[0044] The length A of the opposite side is determined according to the Pythagorean theorem. In this embodiment, since the cross-sectional circle of the second layer of steel wire ropes is tangent to the cross-sectional circle of the steel wire ropes in the first layer, the hypotenuse of the right triangle is the cross-sectional radius of the first layer of steel wire ropes + the cross-sectional radius of the second layer of steel wire ropes; the adjacent side of the right triangle is the cross-sectional radius of the first layer of steel wire ropes. Therefore, according to the Pythagorean theorem, a²+b²=c², Calculate the cross-sectional diameter J2 of the second layer of steel wire rope according to the length of the opposite side.

[0045] Similarly, the cross-sectional diameter J of the wire rope of the Nth layer is N Perform calculations.

[0046] The calculation formula for the cross-sectional diameter of the Nth layer of wire rope is: J N =J1+J2×(N-1)×A.

[0047] Among them, J1 is the cross-sectional diameter of the first layer of steel wire rope, and J2 is the cross-sectional diameter of the second layer of steel wire rope.

[0048] The center position of the second layer of steel wire ropes can be calculated by the right triangle formed between the second layer of steel wire ropes and the first layer of steel wire ropes, thereby the cross-sectional diameters of all layers of steel wire ropes can be calculated.

[0049] The calculation formula for the length L in step (2) is: L = π × J; the length of one circle of the wire rope of the Nth layer is L N =π×J N .

[0050] Step (3) specifically includes the calculation formula of the total length Z of each layer of wire rope: Z = L × Q, the Nth layer of wire rope is Z N =L N ×Q.

[0051] Step (31) specifically includes the total length Z of the outermost layer M of the wire rope M The calculation formula is: M =L M ×Q M .

[0052] Among them, L M It is the length of one circle of the outermost layer M of wire rope.

[0053] Step (5) specifically includes the total length D of the first M-1 layers of wire rope M-1 The calculation formula is: M-1 =Z N +Z N-1 .

[0054] Among them, Z N is the total length of the Nth layer of wire rope, the Mth layer is the outer layer of the Nth layer, then the Nth layer = the outermost layer M-1; Z N-1 It is the sum of the total lengths of all layers of wire ropes before the Nth layer.

[0055] In this embodiment, the sum of the total lengths is the total length of the steel wire ropes of the first layer + the total length of the steel wire ropes of the second layer ... + the total length of the steel wire ropes of the N-1th layer.

[0056] The beneficial effects of the present invention are as follows: by calculating the cross-sectional diameter of the steel wire rope, the length of each layer of steel wire rope on the winch after it is wound around the winch once is determined, thereby the total length of the steel wire rope of each layer on the winch can be calculated, and the overall length of the steel wire rope can be calculated through the total length of the steel wire rope of each layer, thereby calculating layer by layer, making the calculation result clear and less prone to omissions.

Claims

1. A method for determining the length of a steel wire rope, characterized in that: The specific steps include: (1) Calculate the cross-sectional diameter J of each layer of wire rope on the winch; (2) Calculate the length L of one turn of each layer of wire rope based on the cross-sectional diameter J of each layer of wire rope; (3) Calculate the total length Z of each layer of wire rope based on the length L of one turn of each layer of wire rope and the number of turns Q of each layer of wire rope; (31) According to the number of windings Q of the outermost wire rope M Calculate the total length Z of the outermost layer M of the wire rope M ; (4) Calculate the total length D of the wire rope; (5) Calculate the total length D of the first M-1 layers of wire rope M-1 ; (6) According to the total length Z of the outermost layer M M and the total length D of the first M-1 layer of wire rope M-1 Calculate the total length of the wire rope D=Z M +D M-1 .

2. A method for determining the length of a steel wire rope according to claim 1, characterized in that: The cross-sectional diameter J of each layer of steel wire rope in step (1) specifically includes: The cross-sectional diameter J1 of the first layer of wire rope is obtained by adding the cross-sectional diameter of the winch and the cross-sectional radius of the first layer of wire rope; The second layer of steel wire ropes is wound between two adjacent steel wire ropes in the first layer, the center of the second layer of steel wire ropes is located between the two adjacent steel wire ropes in the first layer, and the cross-sectional circle of the steel wire ropes in the second layer is tangent to the cross-sectional circle of the steel wire ropes in the first layer; A hypotenuse is formed between the center of the second layer of steel ropes and the center of the first layer of steel ropes, and an opposite side is formed at the intersection of a vertical line between two adjacent steel ropes in the first layer and the center of the second layer of steel ropes, and the hypotenuse and the opposite side are connected through adjacent sides to form a right triangle; Determine the length of the opposite side A using the Pythagorean theorem; Calculate the cross-sectional diameter J2 of the second layer of wire rope according to the length of the opposite side; Similarly, the cross-sectional diameter J of the wire rope of the Nth layer is N Perform calculations; The calculation formula for the cross-sectional diameter of the Nth layer of wire rope is: I N =J1+J2×(N-1)×A; Among them, J1 is the cross-sectional diameter of the first layer of steel wire rope, and J2 is the cross-sectional diameter of the second layer of steel wire rope.

3. A method for determining the length of a steel wire rope according to claim 2, characterized in that: The calculation formula for the length L in step (2) is: L = π × J; the length of one circle of the wire rope of the Nth layer is L N =π×J N .

4. A method for determining the length of a steel wire rope according to claim 3, characterized in that: Step (3) specifically includes the calculation formula of the total length Z of each layer of wire rope: Z = L × Q, the Nth layer of wire rope is Z N =L N ×Q; Step (31) specifically includes the total length Z of the outermost layer M of the wire rope M The calculation formula is: M =L M ×Q M ; Among them, L M It is the length of one circle of the outermost layer M of wire rope.

5. A method for determining the length of a steel wire rope according to claim 4, characterized in that: Step (5) specifically includes the total length D of the first M-1 layers of wire rope M-1 The calculation formula is: M-1 =Z N +Z N-1 ; Among them, Z N is the total length of the Nth layer of wire rope, the Mth layer is the outer layer of the Nth layer, then the Nth layer = the outermost layer M-1; Z N-1 It is the sum of the total lengths of all layers of wire ropes before the Nth layer.

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