Auxiliary device for preventing cable of coal mining machine from sliding down

Abstract

The utility model provides an auxiliary device for preventing a coal cutter cable from sliding down, the auxiliary device for preventing the coal cutter cable from sliding down comprises a cable clamping plate assembly and a magnetic piece, the cable clamping plate assembly comprises a plurality of clamping plate bodies which are connected in sequence, and the extension direction of the plurality of clamping plate bodies is consistent with the extension direction of the cable. The cable clamping plate assembly comprises a clamping plate body and a magnetic part, the cable clamping plate assembly is used for being arranged on a cable in a sleeving mode, the magnetic part is connected with the clamping plate body, the magnetic part is located on the side, close to the cable, of the clamping plate body, and the magnetic part is used for attracting part of the cable arranged in the clamping plate body. According to the auxiliary device for preventing the cable of the coal mining machine from sliding down, the possibility that the cable slides down is reduced, the cable is prevented from being in contact with a conveyor in operation, and the risk that the cable is damaged is reduced.

Description

Technical Field

[0001] This utility model relates to the technical field of auxiliary devices for coal mining machines, specifically, to an auxiliary device for preventing the cable of a coal mining machine from slipping. Background Technology

[0002] In coal mine production, the safe and efficient operation of fully mechanized mining faces is crucial. However, cable management has always been a challenging issue for steeply inclined fully mechanized mining faces, taking a slope of 11-30° as an example. In such working environments, cables are prone to slipping due to gravity, which greatly complicates cable management.

[0003] In related technologies, to prevent cable slippage, at least two cable watchers typically need to work together, using methods such as binding with wire and prying with crowbars to control the cable's movement speed. This manual control method is difficult to implement, inefficient, and prone to safety accidents during operation. Secondly, the coordination between the cable watchers and the coal mining machine operator is also a challenge. When the coal mining machine is pulling at high speeds, it is easy for the cable to become uncontrollable, causing the slipped cable to fall into the running conveyor and damage it.

[0004] Furthermore, when the sliding cable is located below the operating coal mining machine, the cable, under the combined effect of its own weight and the downward thrust of the machine, easily overcomes the friction between the upper and lower cables and the resistance to the cable trough, thus sliding downwards. During the cable sliding process, local obstruction can easily cause the cable to arch, further increasing the risk of the cable slipping, and may even cause the cable to slip onto the operating front conveyor, resulting in cable damage. Utility Model Content

[0005] This invention aims to at least partially solve one of the technical problems in related technologies. To this end, embodiments of this invention provide an auxiliary device to prevent the coal mining machine cable from slipping. This device reduces the possibility of cable slippage, prevents the cable from contacting the operating conveyor, and reduces the risk of cable damage.

[0006] The auxiliary device for preventing the coal mining machine cable from slipping according to this embodiment of the utility model includes:

[0007] A cable clamp assembly, comprising a plurality of clamp bodies connected in sequence, wherein the extension direction of the plurality of clamp bodies is consistent with the extension direction of the cable, and the cable clamp assembly is used to be fitted onto the cable.

[0008] A magnetic component is connected to the clamp body and is located on the side of the clamp body adjacent to the cable. The magnetic component is used to attract a portion of the cable placed inside the clamp body.

[0009] The auxiliary device for preventing coal mining machine cables from slipping, as described in this embodiment, effectively secures the cable using a cable clamp assembly, preventing it from sliding down due to gravity. The magnetic attraction increases the adhesion between the cable and the clamp, further improving the cable's stability.

[0010] In some embodiments, the inner peripheral wall of the clamp body is provided with a mounting groove, and the magnetic component is adapted to the mounting groove.

[0011] In some embodiments, there are multiple mounting slots, which are spaced apart along the length of the clamp body, and there are multiple magnetic elements, each corresponding to one of the multiple mounting slots.

[0012] In some embodiments, the auxiliary device for preventing the coal mining machine cable from slipping further includes a buffer pad, which is placed in the mounting groove and located between the magnetic element and the cable.

[0013] In some embodiments, the auxiliary device for preventing the coal mining machine cable from slipping further includes an elastic element, which is placed in the mounting groove, with a first end of the elastic element abutting against the bottom wall of the mounting groove and a second end of the elastic element abutting against the magnetic element.

[0014] In some embodiments, the auxiliary device for preventing the coal mining machine cable from slipping further includes an adjusting connector, at least a portion of which penetrates the buffer pad and the magnetic element and is connected to the clamping plate body, and the adjusting connector is movable relative to the clamping plate body in a direction orthogonal to the cross-section of the magnetic element.

[0015] In some embodiments, the inner peripheral wall of the clamp body is further provided with anti-slip texture, the anti-slip texture including a guide slope that cooperates with the groove wall of the cable.

[0016] In some embodiments, the number of magnetic elements increases as the angle between the cable and the horizontal plane increases.

[0017] In some embodiments, the magnetic induction intensity of the magnetic component is 0.5~1.2T, and the operating temperature range of the magnetic component is -40℃~180℃.

[0018] In some embodiments, the auxiliary device for preventing the coal mining machine cable from slipping further includes a control component, at least a portion of which is in contact with the cable. The control component is used to detect the tension of the cable. If the tension of the cable exceeds a preset value, the control component sends a deceleration command to the coal mining machine. Attached Figure Description

[0019] Figure 1 This is a three-dimensional structural schematic diagram of an auxiliary device for preventing the coal mining machine cable from slipping, according to an embodiment of this utility model.

[0020] Figure 2 This is a cross-sectional structural schematic diagram of the side wall of the clamp body of the auxiliary device for preventing the coal mining machine cable from slipping, according to an embodiment of this utility model.

[0021] Figure label:

[0022] 1. Cable clamp assembly; 11. Clamp body; 12. Mounting groove; 13. Anti-slip texture.

[0023] 2. Magnetic components,

[0024] 3. Cushioning pad,

[0025] 4. Elastic components,

[0026] 5. Adjust the connecting parts. Detailed Implementation

[0027] The embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0028] like Figure 1 and Figure 2 As shown, the auxiliary device for preventing the coal mining machine cable from slipping in this embodiment of the present invention includes a cable clamp assembly 1 and a magnetic component 2.

[0029] The cable clamp assembly 1 includes a plurality of clamp bodies 11 connected in sequence. The extension direction of the plurality of clamp bodies 11 is consistent with the extension direction of the cable, and the cable clamp assembly 1 is used to be fitted onto the cable. A magnetic element 2 is connected to the clamp body 11 and is located on the side of the clamp body 11 adjacent to the cable. The magnetic element 2 is used to attract a portion of the cable placed inside the clamp body 11.

[0030] Specifically, such as Figure 1 and Figure 2 As shown, multiple clamp bodies 11 are connected sequentially by hinges or snaps to form a flexible clamping structure, which is fitted onto the outside of the cable. Magnetic components 2 are embedded in the mounting grooves 12 on the inner wall of the clamp body 11, directly contacting or adhering to the cable surface through the buffer pads 3. The clamp bodies 11 provide rigid constraints, limiting the lateral displacement of the cable; the magnetic components 2 increase longitudinal friction by magnetically attracting the cable surface (especially suitable for cables with metal shielding layers).

[0031] Understandably, the segmented design of the clamp assembly adapts to cable bending requirements, avoiding excessive compression of the cable by traditional integral clamps. The dual action of magnetic attraction and mechanical clamping significantly improves the anti-slip effect, especially in high-angle (11-30°) conditions, effectively counteracting the component of gravity.

[0032] Optionally, the magnetic component 2 can be a magnetic material such as a neodymium iron boron magnet.

[0033] In other words, the auxiliary device for preventing coal mining machine cables from slipping, as described in this embodiment, can effectively fix the cable using the cable clamp assembly 1, preventing the cable from slipping due to gravity. The adsorption effect of the magnetic component 2 increases the adhesion between the cable and the clamp, further improving the stability of the cable.

[0034] In some embodiments, the inner peripheral wall of the clamp body 11 is provided with a mounting groove 12, and the magnetic component 2 is adapted to the mounting groove 12. It is understood that multiple mounting grooves 12 are machined on the inner peripheral wall of the clamp body 11, and the magnetic component 2 is fixed in the grooves. The groove depth matches the thickness of the magnetic component 2, and they are fixed by bolts or adhesive. Preferably, the magnetic component 2 is placed in the mounting groove 12, and the wall surface of the magnetic component 2 adjacent to the cable is flush with the inner peripheral wall of the clamp body 11 to avoid direct contact between the magnetic component 2 and the cable during use, thereby preventing breakage or damage to the magnetic component 2.

[0035] In some embodiments, there are multiple mounting slots 12, which are spaced apart along the length of the clamp body 11. There are also multiple magnetic elements 2, each corresponding to one of the mounting slots 12. It is understood that each mounting slot 12 may accommodate at least one magnetic element 2, allowing for adjustment of the number of magnetic elements 2 according to the cable diameter or tilt angle. Furthermore, the modular design reduces maintenance costs; a single damaged magnet can be replaced individually, eliminating the need to scrap the entire clamp.

[0036] In some embodiments, the auxiliary device for preventing the coal mining machine cable from slipping further includes a buffer pad 3, which is placed in the mounting groove 12 and located between the magnetic element 2 and the cable.

[0037] It is understandable that, such as Figure 1 and Figure 2 As shown, the buffer pad 3 is located on the side of the magnetic component 2 adjacent to the cable, and the buffer pad 3 (such as rubber or polyurethane material) is embedded in the mounting groove 12. Its thickness can be slightly greater than the height of the magnetic component 2 to form a pre-compression. In other words, the buffer pad 3 can absorb the cable's vibration energy, preventing hard contact between the magnetic component 2 and the cable that could cause wear. This reduces damage to the cable's outer sheath caused by friction, extending the cable's lifespan. The elastic deformation of the buffer pad 3 can compensate for dimensional changes caused by the cable's thermal expansion and contraction, maintaining a stable clamping force.

[0038] In some embodiments, the auxiliary device for preventing the coal mining machine cable from slipping further includes an elastic element 4, which is placed in the mounting groove 12, with the first end of the elastic element 4 abutting against the bottom wall of the mounting groove 12 and the second end of the elastic element 4 abutting against the magnetic element 2.

[0039] It is understandable that, such as Figure 1 and Figure 2 As shown, the elastic element 4 (such as a spring or elastic rubber column) is placed at the bottom of the mounting groove 12, with one end abutting against the bottom of the groove and the other end pushing against the magnetic element 2, allowing the magnetic element 2 to move slightly along the groove depth. In other words, the elastic element 4 provides an adjustable preload, and when the cable is subjected to external impact, the magnetic element 2 can retract slightly to release the pressure.

[0040] Therefore, the auxiliary device for preventing coal mining machine cables from slipping, as described in this embodiment, can adapt to different cable diameters, avoiding cable deformation caused by excessive clamping. It provides cushioning when the cable suddenly slips, reducing the risk of magnet detachment.

[0041] In some embodiments, the auxiliary device for preventing the coal mining machine cable from slipping further includes an adjusting connector 5. At least a portion of the adjusting connector 5 passes through the buffer pad 3 and the magnetic element 2 and is connected to the clamping plate body 11. The adjusting connector 5 is movable relative to the clamping plate body 11 in a direction orthogonal to the cross-section of the magnetic element 2.

[0042] It is understandable that, such as Figure 1 and Figure 2 As shown, the adjusting connector 5 (such as a threaded bolt) passes through the buffer pad 3 and the magnetic component 2, and is threadedly connected to the clamping plate body 11. Tightening the bolt can adjust the contact pressure between the magnetic component 2 and the cable, so as to achieve precise control of the magnetic clamping force and adapt to different working conditions. Optionally, the adjusting connector 5 is a bolt.

[0043] In other words, by adjusting the tightness of the bolts, the magnetic attraction force and the cable's compressive strength can be balanced, preventing excessive clamping and damage to the cable insulation. This allows for quick adjustments downhole without disassembling the clamp assembly.

[0044] In some embodiments, the inner peripheral wall of the clamp body 11 is further provided with anti-slip texture 13, which includes a guide slope that mates with the groove wall of the cable. It is understood that the anti-slip texture 13 is formed by inclined grooves on the inner wall of the clamp body 11, with the inclined direction forming a certain angle (e.g., 30°~60°) with the cable extension direction. That is, the inclined surface of the texture engages with the cable surface, forming a mechanical locking effect. This increases sliding resistance and, in conjunction with magnetic attraction, prevents longitudinal slippage of the cable. The inclined grooves guide the cable to move along a set direction, preventing lateral deviation and jamming into equipment gaps.

[0045] In some embodiments, the number of magnetic elements 2 increases as the angle between the cable and the horizontal plane increases. It is understood that as the tilt angle of the cable increases (i.e., the angle between the cable and the horizontal plane increases), the cable slides down faster, and the clamping force generated by the cable clamp assembly 1 itself becomes relatively insufficient. Therefore, appropriately increasing the number of magnetic elements 2 can improve the clamping force of the cable clamp assembly 1 without replacing it.

[0046] Optionally, the density of the magnetic components 2 in the clamping plate assembly can be dynamically adjusted according to the inclination angle of the working surface (for example, one magnet is added per meter of clamping plate for every 5° increase in inclination angle), thereby ensuring the balance between the magnetic attraction force and the sliding force of the magnetic components 2 under different slopes. In other words, by changing the number of magnetic components 2 according to the inclination angle of the cable, cost waste caused by magnet redundancy or anti-slip failure caused by insufficient magnets can be avoided.

[0047] In some embodiments, the magnetic induction intensity of the magnetic component 2 is 0.5~1.2T, and the operating temperature range of the magnetic component 2 is -40℃~180℃. It is understood that a magnetic induction intensity of 1.2T can provide sufficient adsorption force under slippery conditions, while a lower limit of 0.5T avoids excessive magnetic force that could lead to difficulty in disassembly. The wide temperature range design ensures stable performance of the magnet under harsh conditions such as water spray and coal dust pollution in underground mines.

[0048] In some embodiments of the present invention, the auxiliary device for preventing the coal mining machine cable from slipping further includes a control component (not shown in the figure). At least a portion of the control component is in contact with the cable. The control component is used to detect the tension of the cable. If the tension of the cable exceeds a preset value, the control component sends a deceleration command to the coal mining machine.

[0049] Understandably, the tension sensor is integrated into the clamping plate assembly to detect the real-time tension of the cable and is linked to the coal mining machine control system via a PLC controller. When the cable tension exceeds a threshold (such as 80% of the safety factor), a deceleration command is automatically sent to the coal mining machine. Thus, the control component can replace manual judgment, achieving an optimal balance between cable protection and production efficiency. This prevents sudden cable slippage accidents caused by excessive traction from the coal mining machine.

[0050] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0051] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0052] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0053] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0054] In this utility model, the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of this utility model. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Furthermore, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0055] Although the above embodiments have been shown and described, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Any changes, modifications, substitutions and variations made to the above embodiments by those skilled in the art are within the protection scope of the present invention.

Claims

1. An auxiliary device for preventing the slippage of a coal mining machine cable, characterized in that, include: A cable clamp assembly, comprising a plurality of clamp bodies connected in sequence, wherein the extension direction of the plurality of clamp bodies is consistent with the extension direction of the cable, and the cable clamp assembly is used to be fitted onto the cable. A magnetic component is connected to the clamp body and is located on the side of the clamp body adjacent to the cable. The magnetic component is used to attract a portion of the cable placed inside the clamp body.

2. The auxiliary device for preventing the coal mining machine cable from slipping according to claim 1, characterized in that, The inner peripheral wall of the clamp body is provided with an installation groove, and the magnetic component is adapted to the installation groove.

3. The auxiliary device for preventing the coal mining machine cable from slipping according to claim 2, characterized in that, There are multiple mounting slots, which are arranged at intervals along the length of the clamp body. There are multiple magnetic components, which correspond one-to-one with each of the multiple mounting slots.

4. The auxiliary device for preventing the coal mining machine cable from slipping according to claim 3, characterized in that, It also includes a buffer pad, which is placed in the mounting groove and located between the magnetic component and the cable.

5. The auxiliary device for preventing the coal mining machine cable from slipping according to claim 4, characterized in that, It also includes an elastic element, which is placed in the mounting groove, with a first end of the elastic element abutting against the bottom wall of the mounting groove and a second end of the elastic element abutting against the magnetic element.

6. The auxiliary device for preventing the coal mining machine cable from slipping according to claim 5, characterized in that, It also includes an adjusting connector, at least a portion of which passes through the buffer pad and the magnetic element and is connected to the clamp body, and the adjusting connector is movable relative to the clamp body in a direction orthogonal to the cross-section of the magnetic element.

7. The auxiliary device for preventing the coal mining machine cable from slipping according to any one of claims 1-6, characterized in that, The inner peripheral wall of the clamp body is also provided with anti-slip texture, which includes a guide slope that cooperates with the groove wall of the cable.

8. The auxiliary device for preventing the coal mining machine cable from slipping according to claim 7, characterized in that, The number of magnetic components increases as the angle between the cable and the horizontal plane increases.

9. The auxiliary device for preventing the coal mining machine cable from slipping according to claim 8, characterized in that, The magnetic induction intensity of the magnetic component is 0.5~1.2T, and the operating temperature range of the magnetic component is -40℃~180℃.

10. The auxiliary device for preventing the coal mining machine cable from slipping according to claim 9, characterized in that, It also includes a control component, at least a portion of which is in contact with the cable. The control component is used to detect the tension of the cable. If the tension of the cable exceeds a preset value, the control component sends a speed reduction command to the coal mining machine.

Images