Mine rope saw and its beading

Abstract

The utility model discloses a kind of string beads of mine rope saw, comprising: string bead steel body, the center of the string bead steel body has the through hole for wire rope to pass through;And string bead working layer, the string bead working layer is arranged on the outer periphery of the string bead steel body, the string bead working layer includes the working layer and carbon fiber working layer alternately arranged along the axial direction of string bead steel body, the working layer and the carbon fiber working layer are fixed by sintering and form the string bead working layer between, the working layer and the carbon fiber working layer all have diamond abrasive grain, the strength, hardness of the carbon fiber working layer is greater than the strength, hardness of the working layer. Add carbon fiber working layer can promote the strength and hardness of string bead, improve service life.Carbon fiber working layer can also promote the rigidity (elastic modulus improves about 20%) of string bead, so as to improve the cutting efficiency of mine rope saw in early cutting.

Description

Technical Field

[0001] This utility model relates to the field of diamond wire saws, and more particularly to a mining wire saw and its beads. Background Technology

[0002] Diamond wire saws are widely used in mining and processing, stone slab cutting, and reinforced concrete component sawing. Existing wire saws can be referenced in Chinese Patent Application No. 202410847270.X, which discloses a rubber for diamond wire saws, a diamond wire saw, and a method for manufacturing the same. The diamond wire saw includes a steel wire rope, composite rubber, and diamond beads. The diamond beads consist of a working layer and a base (steel body). The working layer includes a metal matrix and diamond abrasive grains. As mining cutting technology upgrades towards deep hard rock mining and high-precision processing, traditional diamond wire saws face the problem of insufficient matrix toughness, resulting in a short service life. Utility Model Content

[0003] Therefore, there is a need to provide a mining wire saw and its beads to improve the service life and cutting efficiency of the mining wire saw.

[0004] To achieve the above objectives, the inventor provides a beaded system for a mining wire saw, comprising:

[0005] A beaded steel body, wherein the beaded steel body has a through hole at its center for a steel wire rope to pass through; and

[0006] A beaded working layer is disposed on the outer periphery of the beaded steel body. The beaded working layer includes working layers and carbon fiber working layers arranged alternately along the axial direction of the beaded steel body. The working layers and the carbon fiber working layers are fixed together by sintering to form the beaded working layer. Both the working layers and the carbon fiber working layers have diamond abrasive grains. The strength and hardness of the carbon fiber working layer are greater than those of the working layer.

[0007] Furthermore, the thickness of the carbon fiber working layer is greater than the thickness of the working layer.

[0008] Furthermore, multiple carbon fiber working layers are arranged axially along the beaded steel body, with the thickness increasing sequentially.

[0009] Furthermore, the thickness difference between two adjacent carbon fiber working layers is 0.05 mm to 0.1 mm.

[0010] Furthermore: the thickness of the working layer is 0.45mm to 0.55mm, and there are five carbon fiber working layers, with thicknesses of 0.65mm, 0.70mm, 0.75mm, 0.80mm, and 0.85mm respectively.

[0011] Furthermore: the carbon fiber working layer has nickel-plated carbon fibers.

[0012] Furthermore: the working layer and the carbon fiber working layer are fixed together by hot pressing or pressureless sintering to form the beaded working layer.

[0013] To achieve the above objectives, the inventors also provide a mining wire saw, comprising:

[0014] Wire rope;

[0015] Multiple rubber sleeves are sequentially fitted onto the steel wire rope; and

[0016] Multiple beads, wherein the beads are the beads of the mining wire saw described in any of the above embodiments, and the multiple beads are threaded through the through holes of the bead steel body on the wire rope, and adjacent two beads are fixed by a rubber sleeve.

[0017] Unlike existing technologies, the above technical solution has the following beneficial effects:

[0018] Adding a carbon fiber working layer can improve the strength and hardness of the beads, extending their service life. The carbon fiber working layer also increases the rigidity of the beads (increasing the elastic modulus by approximately 20%), thereby improving the cutting efficiency of the mining wire saw in the initial cutting stages.

[0019] The above description of the utility model is merely an overview of the technical solution of this application. In order to enable those skilled in the art to better understand the technical solution of this application and to implement it based on the description and drawings, and to make the above-mentioned objectives and other objectives, features and advantages of this application easier to understand, the following description is provided in conjunction with the specific embodiments and drawings of this application. Attached Figure Description

[0020] The accompanying drawings are only used to illustrate the principles, implementation methods, applications, features, and effects of specific embodiments of this utility model and other related contents, and should not be considered as limitations on this application.

[0021] Figure 1 This is a schematic diagram of the beading in this embodiment;

[0022] Figure 2 This is a schematic diagram of the beads and their diamond abrasive grains in this embodiment;

[0023] Figure 3 This is a schematic diagram of the beads being threaded onto the steel wire rope in this embodiment;

[0024] Figure 4 This is a schematic diagram of the nickel-plated carbon fiber in this embodiment;

[0025] Figure 5 This is a cross-sectional view of the mining wire saw in this embodiment.

[0026] Explanation of reference numerals in the attached figures:

[0027] 1. Beading;

[0028] 11. Beaded steel body;

[0029] 12. Beaded working layer; 121. Working layer; 122. Carbon fiber working layer; 123. Carbon fiber; 124. Nickel plating;

[0030] 2. Steel wire rope;

[0031] 3. Rubber sleeve. Detailed Implementation

[0032] To illustrate the possible application scenarios, technical principles, implementable specific solutions, and achievable objectives and effects of this application in detail, the following description, in conjunction with the listed specific embodiments and accompanying drawings, provides a detailed explanation. The embodiments described herein are merely illustrative of the technical solutions of this application and are therefore intended to limit the scope of protection of this application.

[0033] In this document, the term "embodiment" means that a specific feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The term "embodiment" appearing in various places throughout the specification does not necessarily refer to the same embodiment, nor does it specifically limit its independence or connection with other embodiments. In principle, in this application, as long as there are no technical contradictions or conflicts, the technical features mentioned in each embodiment can be combined in any way to form corresponding implementable technical solutions.

[0034] Unless otherwise defined, the technical terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the use of related terms herein is merely for the purpose of describing particular embodiments and is not intended to limit this application.

[0035] In the description of this application, the term "and / or" is used to describe the logical relationship between objects, indicating that three relationships can exist. For example, A and / or B means: A exists, B exists, and A and B exist simultaneously. Additionally, the character " / " in this document generally indicates that the preceding and following objects have an "or" logical relationship.

[0036] In this application, terms such as “first” and “second” are used only to distinguish one entity or operation from another, and do not necessarily require or imply any actual quantity, hierarchy or order relationship between these entities or operations.

[0037] Without further limitations, the use of terms such as “comprising,” “including,” “having,” or other similar open-ended expressions in this application is intended to cover non-exclusive inclusion, which does not exclude the presence of additional elements in a process, method, or product that includes the stated elements, such that a process, method, or product that includes a list of elements may include not only those defined elements but also other elements not expressly listed, or elements inherent to such a process, method, or product.

[0038] Similar to the understanding in the Examination Guidelines, in this application, expressions such as "greater than," "less than," and "exceeding" are understood to exclude the stated number; expressions such as "above," "below," and "within" are understood to include the stated number. Furthermore, in the description of the embodiments in this application, "multiple" means two or more (including two), and similar expressions related to "multiple" are also understood in this way, such as "multiple groups" and "multiple times," unless otherwise explicitly specified.

[0039] In the description of the embodiments of this application, the space-related expressions used, such as "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "vertical," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential," indicate the orientation or positional relationship based on the orientation or positional relationship shown in the specific embodiments or drawings. They are only for the purpose of describing the specific embodiments of this application or for the reader's understanding, and do not indicate or imply that the device or component referred to must have a specific position, a specific orientation, or be constructed or operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this application.

[0040] Unless otherwise expressly specified or limited, the terms "installation," "connection," "linking," "fixing," and "setting," as used in the description of the embodiments of this application, should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral arrangement; it can be a direct connection or an indirect connection through an intermediate medium; it can be a relationship of two components combined together, an interaction relationship between two components, or a connection within two structures. Those skilled in the art to which this application pertains can understand the specific meaning of the above terms in the embodiments of this application according to the specific circumstances.

[0041] As mining cutting technology upgrades towards deep hard rock mining and high-precision machining, traditional diamond wire saws (or mining wire saws) face bottlenecks such as insufficient matrix toughness, severe thermal failure, and poor structural stability. Carbon fiber, with its high strength (tensile strength ≥3.5GPa), high thermal conductivity (axial thermal conductivity >200W / m·K), and lightweight properties, is considered a breakthrough reinforcement. Composite-structured beaded mining wire saws, as an innovative upgrade to traditional diamond wire saws, have been researched and applied by inventors. The inventors have designed a carbon fiber-directed reinforced composite structure mining wire saw to improve its service life and cutting efficiency.

[0042] Please see Figures 1 to 5 This embodiment provides a beaded system for a mining wire saw, comprising:

[0043] A beaded steel body 11, wherein the center of the beaded steel body 11 has a through hole for the steel wire rope 2 to pass through; and

[0044] A beaded working layer 12 is disposed on the outer periphery of the beaded steel body 11. The beaded working layer 12 includes working layers 121 and carbon fiber working layers 122 arranged alternately along the axial direction of the beaded steel body 11. The working layers 121 and the carbon fiber working layers 122 are fixed together by sintering to form the beaded working layer 12. Both the working layers 121 and the carbon fiber working layers 122 have diamond abrasive grains (used for...). Figure 2 (represented by dots on the surface), the strength and hardness of the carbon fiber working layer 122 are greater than the strength and hardness of the working layer.

[0045] Adding a carbon fiber working layer 122 can improve the strength and hardness of the beads, extending their service life. The carbon fiber working layer 122 can also increase the rigidity of the beads during early cutting (increasing the elastic modulus by approximately 20%), thereby improving the cutting efficiency of the mining wire saw.

[0046] Please see Figure 1 and Figure 2 In some embodiments, the thickness of the carbon fiber working layer 122 is greater than the thickness of the working layer 121. Because the carbon fiber working layer 122 has higher strength and hardness, increasing its thickness can enhance the overall load-bearing capacity and wear resistance of the beads, making it particularly suitable for high-intensity hard rock cutting and other working conditions, effectively extending the life of the beads and improving cutting stability. Of course, in some embodiments, if the cutting intensity is not high, the thickness of the carbon fiber working layer 122 can be less than or equal to the thickness of the working layer 121.

[0047] During the wire saw cutting process in the mine, the beads rotate at high speed with the wire rope 2 and reciprocate around the object being cut, so the wear at both ends of the working layer of the beads presents a conical shape.

[0048] In some embodiments, multiple carbon fiber working layers 122 are arranged axially along the steel bead body 11, and their thickness increases sequentially. That is, the carbon fiber working layer 122 near the cutting start end (i.e., the end that first contacts the object being cut) has the largest thickness, while the thickness of the carbon fiber working layer 122 away from the start end gradually decreases, forming a gradually thickened structure to accommodate the wear differences of the beads at different positions during actual use, which can alleviate the bead taper problem during the use of mining wire saws.

[0049] Figure 3 The arrow indicates a cut to the left, meaning the left end of the beaded working layer is more worn and conical. The right end is also worn, but less so than the left end. Therefore, the thickness of the carbon fiber working layer 22 on the left side is increased.

[0050] Figure 2 As shown, the beads have 6 working layers 121 and 5 carbon fiber working layers 122. The axis of the steel body 11 of the beads is in the up-down direction, and the cutting direction is upward. The thickness of the carbon fiber working layers 122 increases from bottom to top, that is, the thickness of the five carbon fiber working layers 122 from bottom to top is 0.65mm, 0.70mm, 0.75mm, 0.80mm and 0.85mm respectively. The thickness of each working layer 121 is the same.

[0051] In some embodiments, the thickness difference between two adjacent carbon fiber working layers 122 is 0.05 mm to 0.1 mm. Figure 2 As shown, the beads have six working layers 121 and five carbon fiber working layers 122. The axis of the steel body 11 of the beads is vertical, with the cutting direction facing upwards. The thickness of the carbon fiber working layers 122 increases from bottom to top, that is, the thicknesses of the five carbon fiber working layers 122 from bottom to top are 0.65mm, 0.70mm, 0.75mm, 0.80mm, and 0.85mm respectively, with a thickness difference of 0.05mm. While the carbon fiber working layers 122 are thickened layer by layer, a small interlayer difference is maintained, allowing the diamond abrasive grains to be gradually exposed.

[0052] Please see Figure 4 In this embodiment, the carbon fiber working layer 122 has carbon fiber 123 with nickel plating 124, that is, nickel plating is applied to the surface of the carbon fiber, and a magnetic field can be used to make the carbon fiber align in a fixed direction. Figure 4 The lower part of the carbon fiber 123 is shown as nickel-plated 124, and the upper part is also nickel-plated, but it is cut off to show the presence of the carbon fiber 123.

[0053] In this embodiment, the working layer 121 is formed by cold blank, and the carbon fiber working layer 122 is also formed by cold blank. The working layer 121 and the carbon fiber working layer 122 are connected by hot pressing sintering or pressureless sintering to form a beaded working layer 12.

[0054] Please see Figure 5 This embodiment also provides a mining wire saw, comprising:

[0055] Wire rope 2;

[0056] Multiple rubber sleeves 3 are sequentially fitted onto the steel wire rope 2; and

[0057] Multiple beads, wherein the beads are those of the mining wire saw described in any of the above embodiments, and the structure is as follows: Figures 1 to 4 As shown, multiple beads are threaded through the through holes of the bead body 11 onto the wire rope 2, and adjacent beads are fixed together by a rubber sleeve 3.

[0058] This embodiment provides a method for manufacturing beads for a mining wire saw, including the following steps:

[0059] 1. Raw material preparation: Prepare the required matrix powder and diamonds, and perform titanium plating on the diamonds.

[0060] 2. Mixing: Put the two prepared carcass materials (one powder without carbon fiber and the other powder with carbon fiber) into a mixer and mix them. After mixing for 2 hours, perform cold pressing.

[0061] 3. Cold Curd Forming: The fully automatic cold press has two material boats: a side material boat and a core material boat. During cold pressing, powder is first added to the side material boat (containing powder without carbon fiber). After pressing, powder is added to the core material boat (containing powder containing carbon fiber, with the option to add 1.0 vol% carbon fiber (approximately 300 μm in length and 10 μm in diameter)). Before pressing, a magnetic field is applied to the outside of the device to align the carbon fiber in a fixed direction. After pressing, the constant magnetic field is removed. The side material boat is then added for pressing, followed by the core material boat, which simultaneously applies a constant magnetic field to the outside of the device. The number of pressing cycles is determined by the height of the bead string and the amount of powder added each time.

[0062] 4. Hot pressing sintering: The prepared working layer 121 and carbon fiber working layer 122 cold blanks are alternately arranged and placed in a graphite disk for vacuum hot pressing sintering. The sintering temperature is 850℃, the holding time is 30min, and the blanks are cooled with the furnace to form beads.

[0063] The above technical solution provides a mining wire saw that combines efficiency and lifespan. One working layer consists of a non-carbon fiber formulation, and the other layer contains 1.0 vol% carbon fiber (approximately 300 μm in length and 10 μm in diameter). These two working layers are alternately arranged and then hot-pressed and sintered, ultimately achieving performance adaptation for different service stages through structural gradient. The fiber bridging effect enhances tensile strength while maintaining the integrity of the matrix structure, thereby increasing the lifespan of the mining wire saw. Furthermore, to mitigate the bead taper issue during use, the thickness of the carbon fiber working layer on the side with the larger taper can be increased, further improving bead lifespan and cutting efficiency.

[0064] Finally, it should be noted that although the above embodiments have been described in the text and drawings of this application, this should not limit the scope of patent protection of this application. Any technical solutions that are based on the essential concept of this application and utilize the content described in the text and drawings of this application, resulting in equivalent structural or procedural substitutions or modifications, as well as the direct or indirect application of the technical solutions of the above embodiments to other related technical fields, are all included within the scope of patent protection of this application.

Claims

1. A beaded system for a mining wire saw, characterized in that, include: A beaded steel body, wherein the center of the beaded steel body has a through hole for a steel wire rope to pass through; as well as A beaded working layer is disposed on the outer periphery of the beaded steel body. The beaded working layer includes working layers and carbon fiber working layers arranged alternately along the axial direction of the beaded steel body. The working layers and the carbon fiber working layers are fixed together by sintering to form the beaded working layer. Both the working layers and the carbon fiber working layers have diamond abrasive grains. The strength and hardness of the carbon fiber working layer are greater than those of the working layer.

2. The beaded string according to claim 1, characterized in that: The thickness of the carbon fiber working layer is greater than the thickness of the working layer.

3. The beaded string according to claim 1 or 2, characterized in that: Multiple carbon fiber working layers are arranged along the axial direction of the beaded steel body, and their thickness increases sequentially.

4. The beaded string according to claim 3, characterized in that: The thickness difference between two adjacent carbon fiber working layers is 0.05 mm to 0.1 mm.

5. The beaded string according to claim 3, characterized in that: The thickness of the working layer is 0.45mm to 0.55mm, and there are five carbon fiber working layers, with thicknesses of 0.65mm, 0.70mm, 0.75mm, 0.80mm, and 0.85mm respectively.

6. The beaded string according to claim 1, characterized in that: The carbon fiber working layer has nickel-plated carbon fibers.

7. The beaded string according to claim 1, characterized in that: The working layer and the carbon fiber working layer are fixed together by hot pressing or pressureless sintering to form the beaded working layer.

8. A mining wire saw, characterized in that, include: Wire rope; Multiple rubber sleeves are sequentially fitted onto the steel wire rope; as well as Multiple beads, wherein the beads are the beads of the mining wire saw according to any one of claims 1 to 7, the multiple beads are threaded through the through holes of the bead steel body on the wire rope, and adjacent two beads are fixed by a rubber sleeve.

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