Method for judging clamping degree of double-wedge block rope locker to steel wire rope guide

Abstract

The application discloses a method for judging the clamping degree of a double-wedge locking rope device on a steel wire rope cage, which measures the height from the upper end surface of a wedge block to the upper end surface of a wedge box and the opening of the double wedge to judge the clamping degree of the double-wedge locking rope device on the steel wire rope cage, and the required data is convenient and fast to obtain, high in accuracy, simple to calculate and strong in reference, greatly improving the safety and reliability of the double-wedge locking rope device, and being suitable for judging the clamping degree of the double-wedge locking rope device on the steel wire rope cage of various models.

Description

TECHNICAL FIELD

[0001] The present application relates to a kind of judgment methods of double wedge block rope locking device to steel wire rope guide, it is applicable to heavy hammer tension type steel wire rope guide fixing device. BACKGROUND

[0002] Mine hoisting system is the important link of mine production, it shoulders the important task of contact between well and underground, with " throat " effect. Steel wire rope guide is widely used in mine hoisting system using steel wire rope as the guide device of hoisting container. Steel wire rope guide usually uses double wedge block rope locking device to be clamped and fixed, the locking device is easy to install and remove, force is evenly distributed, does not damage steel wire rope, it is currently the guide rope fixing device that is more popular. Due to the effect of wedge surface, wedge block is clamped by the friction force of steel wire rope, and plays the role of locking rope. However, if the wedge block is too small to clamp the steel wire rope guide, it will appear rope and steel wire rope falling accident;Wedge block is too large to clamp the steel wire rope guide, and it is difficult to loosen when the rope is loose. Therefore, how to accurately judge the clamping degree of double wedge block rope locking device to steel wire rope guide is the difficulty of clamping steel wire rope guide by double wedge block rope locking device. SUMMARY

[0003] In order to judge whether the double wedge block rope locking device clamps the steel wire rope guide, the present application provides a kind of judgment method of double wedge block rope locking device to steel wire rope guide clamping degree.

[0004] The specific technical scheme is as follows:

[0005] A kind of judgment method of double wedge block rope locking device to steel wire rope guide clamping degree, comprising the following steps:

[0006] 1) wash the anticorrosive oil of wedge block clamping section steel wire rope guide with kerosene;

[0007] 2) measure single wedge block height L, single wedge block upper bottom width L1, single wedge block lower bottom width L2, steel wire rope guide diameter d1, double wedge block rope groove width d2 when not installing steel wire rope guide and wedge box top width d3;

[0008] 3) install steel wire rope guide in double wedge block rope locking device, and measure the width W2 of double wedge block rope groove after installation and the width W3 when double wedge block installs steel wire rope guide and closes;

[0009] 4) calculate the height of wedge block upper surface distance wedge box upper surface according to the above measurement data:

[0010] Assume that the extension line of the inner wall of the wedge box intersects with the center line of the double wedge at point C at a distance of H1 when the steel wire rope guide is not installed, and at a distance of H2 when the steel wire rope guide is installed, and the distance between the upper end surface of the wedge and the upper end surface of the wedge box is H, and the opening of the double wedge is W; then,

[0011] The slope when the steel wire rope guide is not installed: tan alpha = (L1-L2) / L = (d3 / 2) / H1 (1)

[0012] The slope when the steel wire rope guide is installed: tan alpha = (L1-L2) / L = (W3 / 2) / H2 (2)

[0013] The distance between the upper end surface of the wedge and the upper end surface of the wedge box: H = H2-H1 (3)

[0014] At the same time, since the steel wire rope guide is in close contact with the wedge rope groove, W2 = d1.

[0015] By combining the above equations (1)-(3), we can obtain:

[0016] H = ((W3-d3)L) / (2(L1-L2)) (4)

[0017] W = W2-d2 = d1-d2 (5)

[0018] 5) Then measure the actual height H' of the upper end surface of the wedge relative to the upper end surface of the wedge box and the actual opening W' of the double wedge on site, and compare the actual values H' and W' with the theoretical values H and W calculated above; if H'>H or W'>W, the clamping degree of the wedge on the steel wire rope guide is too small, and the double wedge needs to be pressed down further for rope locking operation; if 80% H

[0019] The double wedge rope locker used in the above judgment method includes a wedge box divided into two halves, a wedge placement cavity is formed inside the wedge box, two single wedges are placed in the wedge placement cavity, and a steel wire rope guide is arranged in the steel wire rope guide clamping channel formed by the two single wedges.

[0020] In summary, the present application judges the clamping degree of the double wedge rope locker on the steel wire rope guide by measuring the height of the upper end surface of the wedge relative to the upper end surface of the wedge box and the opening of the double wedge, which is convenient and fast to obtain, has high accuracy, simple calculation, strong reference, and greatly improves the safety and reliability of the double wedge rope locker, and is suitable for judging the clamping degree of the double wedge rope locker on the steel wire rope guide of various models. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 This is a schematic diagram of the double-wedge rope locking device used in this invention.

[0022] Figure 2 for Figure 1 Schematic diagram of the double wedge block assembly structure.

[0023] Figure 3 for Figure 1 Schematic diagram of the single wedge block structure.

[0024] Figure 4 This is a cross-sectional view of the double-wedge rope locking device of the present invention without the wire rope guide rail installed.

[0025] Figure 5 This is a cross-sectional view of the double-wedge rope locking device for installing wire rope guideways according to the present invention.

[0026] Figure 6 This is a diagram showing the usage status of the SGC-32 double wedge rope locking device used in this embodiment of the invention.

[0027] Figures 7(a) and (b) are Figure 6 Schematic diagram of the single wedge block structure.

[0028] Figure 8 for Figure 6 Diagram of the double wedge block assembly structure.

[0029] In the diagram, 1-wire rope guide, 2-single wedge block, 3-wedge box, 4-connecting bolt. Detailed Implementation

[0030] The present invention will be further explained and described below with reference to specific embodiments. Example

[0031] like Figures 6-8 As shown, taking the SGC-32 (non-standard) double wedge rope locker used in the wire rope hoisting system of a mine of Jinchuan Group as an example, the diameter of the sealed wire rope is φ50mm, i.e., d1=50mm. The design dimensions of the SGC-32 double wedge rope locker are: d2=38mm, d3=170mm, L1=80.25mm, L2=65.25mm, L=600mm, and the width W3 when the double wedges are installed and the wire rope hoisting is closed is 172.5mm.

[0032] Substituting the measured dimensions of the SGC-32 double wedge rope lock into equations (4) and (5) above, we can obtain the theoretical calculated height H of the upper end face of the wedge block from the upper end face of the wedge box and the theoretical opening W of the double wedge block:

[0033] H=((W3-d3)L) / (2(L1-L2))=((172.5-170)*600) / (2(80.25-65.25))=50mm

[0034] W = W2 - d2 = d1 - d2 = 50 - 38 = 12 mm

[0035] On-site measurements showed that the actual height H′ from the upper end face of the wedge block to the upper end face of the wedge box of the double wedge lock was 45mm; the actual opening of the double wedge block was 11mm.

[0036] Calculations and comparisons show that the wedge meets the requirements of 80%H≤H′≤H and 80%W≤W′≤W, indicating that the wedge clamping force on the wire rope guide is appropriate and meets the usage requirements.

Claims

1. A method for judging the clamping tightness of a double-wedge rope locking device on a wire rope guideway, characterized in that, Includes the following steps: 1) Use kerosene to wash away the anti-corrosion oil from the wire rope guideway of the wedge clamping section; 2) Measure the height L of a single wedge, the width L1 of the upper surface of a single wedge, the width L2 of the lower surface of a single wedge, the diameter d1 of the wire rope guide, the width d2 of the rope groove when the double wedge is not equipped with the wire rope guide, and the top width d3 of the wedge box. 3) Install the wire rope guide in the double wedge rope locker, and measure the width W2 of the double wedge rope groove after installation and the width W3 when the double wedge wire rope guide is closed. 4) Calculate the height of the upper surface of the wedge block from the upper surface of the wedge box based on the above measurement data: Assume the extended line of the inner wall of the wedge box intersects the center line of the double wedges at point C at infinity, with an included angle of α; the distance from the upper surface of the wedge to point C is H1 when the wire rope guide is not installed, and H2 when the wire rope guide is installed; the height of the upper surface of the wedge from the upper surface of the wedge box is H; and the opening of the double wedges is W; then: Inclined angle when no wire rope is installed in the guideway: tanα=(L1-L2) / L=(d3 / 2) / H1(1) Inclined angle when installing wire rope guideway: tanα=(L1-L2) / L=(W3 / 2) / H2(2) The height of the upper end face of the wedge block from the upper end face of the wedge box: H = H2 - H1 (3) At the same time, because the wire rope guide is in close contact with the wedge block groove, W2=d1; Combining equations (1) to (3), we can obtain: H=((W3-d3)L) / (2(L1-L2)) (4) W = W2 - d2 = d1 - d2 (5) 5) Subsequently, the actual height H′ of the upper end face of the double wedge block of the rope locking device from the upper end face of the wedge box and the actual opening W′ of the double wedge block are measured on site, and the actual values ​​H′ and W′ are compared with the theoretical values ​​H and W calculated above. If H′>H or W′>W, the clamping force of the wedge block on the wire rope guide is too small, and the double wedge block needs to be pressed down further to lock the rope. If 80%H≤H′≤H and 80%W≤W′≤W, the clamping force of the wedge block on the wire rope guide is moderate and the clamping force meets the usage requirements. If H′<80%H or W′<80%W, the clamping force is too large, which can easily damage the wire rope and make it difficult to loosen when the rope is pulled.

2. A double-wedge rope locking device applied to the method of claim 1, characterized in that, The device includes a two-part wedge box (3), with a wedge block placement cavity inside the wedge box (3). Two opposing single wedge blocks (2) are placed inside the wedge block placement cavity. The two single wedge blocks (2) are joined together to form a wire rope canister clamping channel. A wire rope canister (1) is inserted inside the wire rope canister clamping channel.

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