Mine large-scale equipment and protection and anti-wear system and method for high-voltage cable of mine large-scale equipment
By adding protective devices at cable joints and using equipment actuators to elevate the cables, the problems of leakage, crushing, and wear on high-voltage cables in mining equipment have been solved, resulting in improved safety and efficiency and extended cable lifespan.
Patent Information
- Application Number
- CN202511827573.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-12-05
- Publication Date
- 2026-03-10
AI Technical Summary
In existing technologies, the high-voltage cables of large mining equipment lack protection at the joints, posing a risk of leakage. They are also easily crushed and worn by the tracks when the equipment moves, leading to insulation layer rupture and breakdown, which poses a safety hazard. Furthermore, relying on manual pickup is inefficient.
Add protective devices at the cable joints and lift the cables off the ground using a cable lifting device. Utilize the lifting action of the equipment's own actuator to keep the cables at a preset height above the ground, preventing crushing and abrasion.
It effectively prevents cables from being crushed and worn by tracks, improves power supply reliability, extends cable life, reduces safety hazards, improves relocation efficiency, and reduces costs.
Smart Images
Figure CN121642830A_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to a kind of mine large equipment high voltage cable protection and anti-abrasion system and method, belong to engineering machinery cable protection technical field. BACKGROUND
[0002] In large open pit mine, such as electric hydraulic excavator, electric shovel, mobile crushing station and other large equipment generally uses 6kV or 10kV high voltage cable power supply. Its power supply process is generally as follows: external power supply equipment is connected to the vehicle body cable through high voltage cable, and the vehicle body cable is connected to the high voltage cabinet inside the equipment to supply power for the driving motor and other high-power loads.
[0003] However, the prior art has the following defects: I. The high voltage cable from the vehicle body is not protected at the joint with the high voltage cable provided by the external power supply equipment, and there is a risk of electric shock.
[0004] II. The high voltage cable provided by the external power supply equipment is usually directly dragged on the ground when the mine equipment moves or changes site. This causes two problems: 1. Rolling damage: the heavy caterpillar of the mine equipment is prone to rolling on the cable on the ground, causing the cable armor layer to deform, the insulation layer to break, and the high voltage to break down.
[0005] 2. Abrasion damage: the cable is forcibly dragged on the ground and rubbed against sharp stones, slag and other sharp objects, accelerating the wear of the outer sheath and the insulation layer, shortening the service life of the cable, and posing a major safety hazard.
[0006] Currently, the site relies on manual cable pickup and lifting, which is inefficient and poses a risk to personal safety. Therefore, there is an urgent need for a technical solution that can automatically and reliably solve this problem. SUMMARY
[0007] In view of the deficiencies of the prior art, the present application provides a mine large equipment high voltage cable protection and anti-abrasion system and method, which adds a protection device at the cable joint, providing explosion-proof, dust-proof and rain-proof functions. The cable lifting device mounted on the front end execution mechanism of the mine equipment lifts the cable off the ground, effectively preventing the cable from being rolled by the equipment caterpillar, rubbed against the ground, causing insulation layer damage, breakdown or even short circuit, and greatly improving the power supply reliability and cable service life.
[0008] The present application is implemented according to the following technical solutions: In a first aspect, the present application provides a mine large equipment high voltage cable protection and anti-abrasion system, comprising: a power supply cable, divided into a first high voltage cable and a second high voltage cable, the connection end of the second high voltage cable being used to connect with an external power supply equipment; The collector ring is arranged on the slewing platform, and has a rotating end and a fixed end. The internal cable of the mine equipment is electrically connected with the high-voltage cabinet in the vehicle and the collector ring. The connecting end of the first high-voltage cable is electrically connected with the collector ring. The cable bracket is arranged on the vehicle frame. The first high-voltage cable that passes out of the vehicle frame leads along the cable bracket. The junction box is mounted on the cable bracket. The joint end of the first high-voltage cable passes into the junction box, and the joint end of the second high-voltage cable passes into the junction box. The joint ends of the first and second high-voltage cables are connected in the junction box. The cable lifting device is hung on the front-end executive mechanism of the mine equipment, and is used to lift the second high-voltage cable led out of the cable bracket away from the ground. When the mine equipment is transferred or moved, the second high-voltage cable is kept at a preset height above the ground by the lifting action of the front-end executive mechanism.
[0009] In some embodiments, the cable lifting device comprises: Two oppositely arranged main support rods, which are in a trapezoidal shape or an arch shape; An upper convex circular arc plate fixed between the upper regions of the two main support rods, used to support the second high-voltage cable; Two hole hooks, one symmetrically arranged hole hook is fixed on the upper region of the outer side surface of each of the two main support rods, and the two hole hooks are cooperated with the hanging rope to hang the cable lifting device on the executive mechanism.
[0010] In some embodiments, the cable lifting device further comprises a plurality of cross struts, which are respectively fixed between the front regions and the rear regions of the main support rods. The cross struts are provided with mounting holes in the middle regions in the length direction thereof, used to assemble the cable fixing seat to fix the second high-voltage cable.
[0011] In some embodiments, the upper bending part of the main support rod is fixed with a reinforcing cross beam, and the hole hook is fixed with the reinforcing cross beam.
[0012] In some embodiments, the junction box comprises: A box body fixed on the cable bracket, and the left side surface or the right side surface of the box body is provided as an open surface; A box cover assembled at the open surface of the box body by fasteners; Cable fixing seats respectively mounted on the front side surface and the rear side surface of the box body, through which the first high-voltage cable and the second high-voltage cable respectively pass into the box body; The insulating coupler is used as a quick plug, is arranged in the box body, and the first high-voltage cable and the second high-voltage cable are connected with two connecting bodies in the insulating coupler respectively, and the two connecting bodies are connected to conduct the first high-voltage cable and the second high-voltage cable.
[0013] In some embodiments, the cable bracket comprises: The middle and rear region of the bracket bottom plate is provided with a plurality of terminal box mounting seats, and the terminal box is assembled on the terminal box mounting seat through fasteners; the front region of the bracket bottom plate is provided with a plurality of cable fixing seats, and the second high-voltage cable is assembled on the cable fixing seat through a clamping piece; Two bracket fixing supports are oppositely fixed at the rear end of the bracket bottom plate and are assembled on the vehicle frame through fasteners.
[0014] In some embodiments, the middle and rear region of the bracket bottom plate is a flat plate structure, and the width of the front region of the bracket bottom plate is narrowed and bent upward to form an upturned structure.
[0015] In a second aspect, the present application provides a protection and wear prevention method for a high-voltage cable of a large mine equipment. The internal cable of the mine equipment is electrically connected with the high-voltage cabinet and the current collector ring in the vehicle; The first high-voltage cable is electrically connected with the current collector ring, and the current collector ring is used for power transmission and rotation protection; The first high-voltage cable is led out from the vehicle frame and enters the terminal box on the cable bracket; The second high-voltage cable for connecting with an external power supply device enters the terminal box, and the first high-voltage cable and the second high-voltage cable are connected in the terminal box; The second high-voltage cable is led out from the terminal box and guided to the cable bracket and fixed on the upturned structure on the cable bracket; The second high-voltage cable led out from the cable bracket passes through the cable lifting device hung on the front end executing mechanism of the mine equipment, and when the mine equipment is transferred or moved, the second high-voltage cable is kept at a preset height above the ground by the lifting action of the front end executing mechanism, and the mine equipment is moved in the state that the high-voltage cable is lifted away from the ground.
[0016] In a third aspect, the present application provides a mine large equipment comprising the protection and wear prevention system for a high-voltage cable of a mine large equipment.
[0017] In some embodiments, the mine large equipment comprises a mine electric excavator or a mine electric loader.
[0018] Compared with the prior art, the present application has the following beneficial effects: 1. Fundamentally solve safety issues: Protective devices were added to the cable joints, providing explosion-proof, dustproof, and rainproof functions; by physically raising the cables, the damage caused by the tracks and ground friction was completely avoided, fundamentally eliminating faults such as short circuits, leakage, and blasting caused by these factors, thus ensuring the safety of personnel and equipment.
[0019] 2. Significantly extends cable life: It greatly reduces mechanical damage to cables, thus extending the service life of expensive high-voltage cables many times over, reducing spare parts costs and downtime.
[0020] 3. Improved work efficiency: The entire operation process is simple and quick, requiring no additional power. It can be completed using the mining equipment's own mechanism (bucket), eliminating the heavy labor of manually dragging cables and resulting in high site relocation efficiency.
[0021] 4. Simple structure and low cost: The cable raising device has a simple structure, extremely low manufacturing and maintenance costs, and is easy to promote and use in existing mining equipment, making it extremely cost-effective.
[0022] 5. Good adaptability: It makes full use of the common features of mining equipment buckets, and has strong versatility. The cable lifting device is detachable, which makes it convenient to store when not in use and does not affect the normal operation of the equipment. Attached Figure Description
[0023] The accompanying drawings, as part of this invention, are provided to further illustrate the invention. The illustrative embodiments and descriptions of the invention are used to explain the invention, but do not constitute an undue limitation thereof. Clearly, the drawings described below are merely some embodiments, and those skilled in the art can obtain other drawings based on these drawings without any creative effort.
[0024] In the attached diagram: Figure 1 This is an assembly diagram of the protection and wear prevention system for high-voltage cables in large mining equipment according to the present invention; Figure 2 This is a structural diagram of the protective device at the joint of the first and second high-voltage cables of the present invention; Figure 3 This is a structural diagram of the cable tray of the present invention; Figure 4 This is a structural diagram of the cable raising device of the present invention; Figure 5 This is a structural diagram of the junction box of the present invention.
[0025] Fig. 1: collector ring; 2: frame; 3: junction box; 4: cable bracket; 5: power supply cable; 6: shovel; 7: cable height raising device; 8: steel wire rope, 3-1: box body; 3-2: box cover, 3-3: insulating coupler, 3-4: bolt, 3-5: cable fixing seat, 4-1: bracket fixing support, 4-2: bracket bottom plate, 4-3: junction box mounting seat, 4-4: cable fixing seat, 5-1: first high-voltage cable, 5-2: second high-voltage cable, 7-1: main support rod, 7-2: reinforcing cross beam, 7-3: cross support rod, 7-4: arc plate, 7-5: hole hook.
[0026] It should be noted that the drawings and the written description are not intended to limit the scope of the inventive concept in any way, but to illustrate the inventive concept to those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION
[0027] In order to make the purpose, technical scheme and advantages of the embodiments of the present application clearer, the technical scheme in the embodiments will be described clearly and completely below with reference to the drawings in the embodiments of the present application. The following embodiments are used to illustrate the present application, but not to limit the scope of the present application.
[0028] In the description of the present application, it should be noted that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.
[0029] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.
[0030] As Figure 1 , Figure 2As shown, a protection and anti-abrasion system for a large mine equipment high-voltage cable includes a power supply cable 5, a current collector ring 1, a cable bracket 4, a junction box 3, and a cable lifting device 7; the power supply cable 5 is divided into a first high-voltage cable 5-1 and a second high-voltage cable 5-2, and the connection end of the second high-voltage cable 5-2 is used to connect to an external power supply device; the current collector ring 1 is arranged on a rotary platform, and has a rotating end and a fixed end; the internal cable of the mine equipment is electrically connected to the in-vehicle high-voltage cabinet and the current collector ring 1, and the connection end of the first high-voltage cable 5-1 is electrically connected to the current collector ring 1; the cable bracket 4 is arranged on a vehicle frame, and the first high-voltage cable 5-1 that passes out of the vehicle frame 2 is led along the cable bracket 4; the junction box 3 is installed on the cable bracket 4, the joint end of the first high-voltage cable 5-1 passes into the junction box 3, and the joint end of the second high-voltage cable 5-2 passes into the junction box 3, and the joint ends of the first and second high-voltage cables 5-1, 5-2 are connected in the junction box 3; the cable lifting device 7 is hung on the front end executing mechanism (i.e. the shovel 6 in the figure) of the mine equipment, and is used to lift the second high-voltage cable 5-2 led out of the cable bracket 4 away from the ground; when the mine equipment is moved or turned, the second high-voltage cable 5-2 is kept at a preset height above the ground by the lifting action of the front end executing mechanism (i.e. the shovel 6 in the figure).
[0031] The specific process is as follows: after the second high-voltage cable 5-2 is fixedly installed on the cable fixing seat 3-5 of the junction box 3 and led out, the second high-voltage cable 5-2 is fixed on the upward structure of the cable bracket 4; the cable lifting device 7 with the high-voltage cable is hung on the front end executing mechanism (such as the tip of the shovel 6) of the mine equipment; the executing mechanism is lifted, the cable lifting device 7 drives the second high-voltage cable 5-2 to be lifted, and then the second high-voltage cable 5-2 is lifted away from the ground; the mine equipment is moved in the state that the cable is lifted away from the ground.
[0032] As can be seen from the above, the power supply process is as follows: the external power supply device is connected to a junction box 3 (usually a dustproof, dustproof, and rainproof structure) arranged on the cable bracket 4 through the second high-voltage cable 5-2; the first high-voltage cable 5-1 is connected to the second high-voltage cable 5-2 through the insulated coupler 3-3 in the junction box 3 as a quick connector; the first high-voltage cable 5-1 passes into the vehicle frame 2, and is then connected to the current collector ring 1 through a center joint (responsible for solving the cable winding problem when the equipment is rotated), and the current collector ring is connected to the in-vehicle high-voltage cabinet through the internal cable of the mine equipment to supply power for the large power load such as the driving motor.
[0033] The collector ring 2 solves the problem of continuous transmission of electric energy when the rotating platform rotates; the junction box 3 realizes cable switching and circuit protection; the cable bracket 4 supports and guides the cable to reduce the friction of the body section; the cable lifting device 7 lifts the cable off the ground, and when the mine equipment is transferred or moved, the high-voltage cable is hung on the hook of the cable lifting device 7, and the lifting action of the shovel 6 is used to automatically lift the ground cable off the ground, effectively avoiding the safety accidents such as crushing of the cable by the mine equipment track, friction with the ground, damage to the insulation layer, breakdown and even short circuit, and greatly improving the power supply reliability and the service life of the cable. The application effectively improves the service life of the cable and the safety of the equipment operation, and is suitable for track-type electric equipment (such as mine electric excavator, electric loader).
[0034] It should be noted that the external power supply equipment is generally a separate high-voltage distribution room, which centrally places switch cabinets, transformers and other equipment, and is equipped with ventilation, dehumidification and fire prevention equipment indoors, and can provide 6kv or 10kv high-voltage power.
[0035] The first high-voltage cable 5-1 and the second high-voltage cable 5-2 adopt YJV22-8.7 / 15KV type cable, which is conductor-insulation layer-shield layer, armored layer-protection sleeve from inside to outside, and can withstand a certain pressure mechanical extrusion and soil corrosion, and is the preferred high-voltage cable for mine external power supply. The second high-voltage cable 5-2 is connected with the external power supply equipment, and the first high-voltage cable 5-1 is electrically connected with the collector ring 1, which is used for switching and power distribution of the power supply cable 5, and has overload protection and insulation protection functions.
[0036] The collector ring 1 is arranged on the rotating platform of the track-type equipment, has a fixed end and a rotating end, and is used for realizing power transmission when the rotating platform rotates relative to the fixed part of the equipment.
[0037] It should be noted that the collector ring 1 can be connected with the internal cable of the mine equipment at the fixed end of the collector ring 1, and the rotating end of the collector ring 1 is connected with the first high-voltage cable 5-1 according to the actual assembly position; or the fixed end of the collector ring 1 is connected with the first high-voltage cable 5-1, and the rotating end of the collector ring 1 is connected with the internal cable of the mine equipment.
[0038] The high-voltage cabinet in the vehicle is provided with switch cabinets, transformers and other equipment, which can realize power distribution of the whole vehicle equipment.
[0039] The specific structure of the cable lifting device is further described as follows.
[0040] As Figure 4As shown, the cable lifting device 7 is completely symmetrical in front and back and left and right, comprising two oppositely arranged main support rods 7-1, an upper convex arc plate 7-4 and two hole hooks 7-5; the main support rod 7-1 is in a trapezoidal shape or an arch shape; the upper convex arc plate 7-4 is fixed between the upper regions of the two main support rods 7-1 and used for supporting the second high-voltage cable 5-2; the upper regions of the outer sides of the two main support rods 7-1 are respectively fixed with one symmetrically arranged hole hook 7-5, and the two hole hooks 7-5 cooperate with the hanging rope (i.e. the steel wire rope 8) to hang the cable lifting device 7 on the actuator.
[0041] Further solutions are as follows: Figure 4 As shown, the cable lifting device 7 further comprises a plurality of cross struts 7-3, which are respectively fixed between the front regions and the rear regions of the main support rods 7-1 to maintain the overall stability; the cross struts 7-3 are provided with mounting holes in the middle regions in the length direction thereof for assembling the cable fixing seat to fix the second high-voltage cable 5-2.
[0042] Further solutions are as follows: Figure 4 As shown, the upper bending part of the main support rod 7-1 is fixed with a reinforcing cross beam 7-2 to increase the structural strength and deformation resistance, so that the entire cable lifting device 7 can remain stable when bearing the load of the high-voltage cable pulling and swinging; the hole hook 7-5 is also fixed with the reinforcing cross beam 7-2.
[0043] In use, the steel wire rope 8 is inserted into the hole hook 7-5, so as to be stably and reliably hung into the bucket tip clamping groove of the bucket 6 by the steel wire rope 8, thereby achieving stable hanging; the cable is smoothly downward after passing around the upper convex arc plate 7-4 at the lower end of the cable lifting device 7.
[0044] The specific structure of the above-mentioned junction box is further described as follows.
[0045] As shown in Figure 2 , Figure 5 The junction box 3 comprises a box body 3-1, a box cover 3-2, a cable fixing seat 3-5 and an insulating coupler 3-3; the box body 3-1 is fixed on the cable bracket 4 by bolts 3-4, and the left side or the right side of the box body 3-1 is provided as an open surface; the box cover 3-2 is assembled at the open surface of the box body 3-1 by fasteners; the cable fixing seat 3-5 is respectively installed on the front side and the rear side of the box body 3-1, and the first high-voltage cable 5-1 and the second high-voltage cable 5-2 respectively pass through the cable fixing seat 3-5 and then enter the box body 3-1; the insulating coupler 3-3 used as a quick plug is arranged in the box body 3-1, and the first high-voltage cable 5-1 and the second high-voltage cable 5-2 are respectively connected with two connecting bodies in the insulating coupler 3-3, and the two connecting bodies are in butt joint to conduct the first high-voltage cable 5-1 and the second high-voltage cable 5-2.
[0046] It should be noted that the insulating coupler consists of cylindrical I and cylindrical II joined together. Cylindrical I has multiple locking rods evenly spaced along its circumference at the joint, and the locking rods are hinged to cylindrical I. Cylindrical II has multiple locking holes evenly spaced along its circumference at the joint, with one locking hole corresponding to one locking rod. The locking rod rotates around its hinge point and is tightly engaged in the locking hole, locking cylindrical I and cylindrical II together. Cylindrical I and cylindrical II are then fixed to the mounting bracket located on the bottom plate of the housing by ∩-shaped clamps.
[0047] There are many types of insulating couplers available, and they are not limited to a certain structure. Any connector that can achieve a quick connection between the first high-voltage cable and the second high-voltage cable can be used.
[0048] The following provides a further explanation of the specific structure of the aforementioned cable tray.
[0049] like Figure 3 As shown, the cable tray 4 includes a tray base plate 4-2 and two tray fixing brackets 4-1. The middle and rear area of the tray base plate 4-2 is provided with multiple junction box mounting seats 4-3. The junction box 3 is assembled on the junction box mounting seat 4-3 by bolts 3-4. The front area of the tray base plate 4-2 is provided with multiple cable fixing seats 4-4. The second high voltage cable 5-2 is assembled on the cable fixing seat 4-4 by a snap-fit. The two tray fixing brackets 4-1 are fixed opposite to each other at the rear end of the tray base plate 4-2 and are assembled on the vehicle frame 2 by fasteners.
[0050] In a further design, the middle and rear part of the bracket base plate 4-2 is a flat plate structure, and the width of the front part of the bracket base plate 4-2 becomes narrower and bends upward to form an upward structure.
[0051] This invention also provides a method for protecting and preventing wear on high-voltage cables of large mining equipment: Connect the internal cables of the mining equipment to the high-voltage cabinet and collector ring inside the vehicle; The first high-voltage cable is electrically connected to the slip ring. The slip ring is used for power transmission and rotation protection. Its internal reinforced insulation medium and low-torque brush structure ensure that the cable will not twist and the power transmission is stable when the rotary platform rotates. The first high-voltage cable passes through the frame and enters the junction box on the cable tray; The second high-voltage cable, used for connecting to external power supply equipment, enters the junction box for distribution and circuit protection. The first high-voltage cable and the second high-voltage cable are connected in the junction box; After the second high-voltage cable is led out from the junction box, it is guided to the cable tray and fixed to the lifting structure on the cable tray. The second high-voltage cable, which is led out from the cable tray, passes through a cable lifting device mounted on the front-end actuator of the mining equipment. When the mining equipment is transferred or moved, the lifting action of the front-end actuator keeps the second high-voltage cable at a preset height above the ground, and the mining equipment moves while the high-voltage cable is lifted off the ground.
[0052] In summary, this invention provides a protection and wear prevention system and method for high-voltage cables of large mining equipment, achieving the following functions and effects: 1. Fundamentally solve safety issues: Protective devices were added to the cable joints, providing explosion-proof, dustproof, and rainproof functions; by physically raising the cables, the damage caused by the tracks and ground friction was completely avoided, fundamentally eliminating faults such as short circuits, leakage, and blasting caused by these factors, thus ensuring the safety of personnel and equipment.
[0053] 2. Significantly extends cable life: It greatly reduces mechanical damage to cables, thus extending the service life of expensive high-voltage cables many times over, reducing spare parts costs and downtime.
[0054] 3. Improved work efficiency: The entire operation process is simple and quick, requiring no additional power. It can be completed using the mining equipment's own mechanism (bucket), eliminating the heavy labor of manually dragging cables and resulting in high site relocation efficiency.
[0055] 4. Simple structure and low cost: The cable raising device has a simple structure, extremely low manufacturing and maintenance costs, and is easy to promote and use in existing mining equipment, making it extremely cost-effective.
[0056] 5. Good adaptability: It makes full use of the common features of mining equipment buckets, and has strong versatility. The cable lifting device is detachable, which makes it convenient to store when not in use and does not affect the normal operation of the equipment.
[0057] The large-scale mining equipment provided by the present invention is described below. The large-scale mining equipment described below and the high-voltage cable protection and anti-wear system of the large-scale mining equipment described above can be referred to in correspondence with each other.
[0058] The present invention provides a large-scale mining equipment that may include a protection and anti-wear system for high-voltage cables of large-scale mining equipment as described in any of the above embodiments.
[0059] The beneficial effects achieved by the large-scale mining equipment provided by this invention are consistent with the beneficial effects achieved by the protection and anti-wear system for high-voltage cables of large-scale mining equipment provided by this invention, so they will not be repeated here.
[0060] It should be noted that the aforementioned large mining equipment can be mining electric excavators or mining electric loaders.
[0061] Numerous specific details are set forth in the specification provided herein. However, it will be understood that embodiments of the invention may be practiced without these specific details. In some instances, well-known methods, structures, and techniques have not been shown in detail so as not to obscure the understanding of this specification.
[0062] Furthermore, those skilled in the art will understand that although some embodiments described herein include certain features found in other embodiments but not others, combinations of features from different embodiments are also within the scope of protection of this invention and form different embodiments. For example, in the embodiments described above, those skilled in the art can use them in combination based on known technical solutions and the technical problems to be solved by this application.
[0063] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some modifications or alterations to the above-described technical content to create equivalent embodiments without departing from the scope of the present invention. Any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the scope of the present invention.
Claims
1. A protection and anti-abrasion system for high voltage cables of mine large equipment, characterized in that, The system comprises: a power supply cable, which is divided into a first high-voltage cable and a second high-voltage cable, and a connecting end of the second high-voltage cable is used for connecting with an external power supply device; a current collector ring arranged on the slewing platform, the current collector ring having a rotating end and a fixed end, and an internal cable of the mine equipment is electrically connected with an indoor high-voltage cabinet and the current collector ring, and a connecting end of the first high-voltage cable is electrically connected with the current collector ring; a cable bracket arranged on the vehicle frame, and the first high-voltage cable passing out of the vehicle frame leads along the cable bracket; a junction box mounted on the cable bracket, a joint end of the first high-voltage cable penetrating into the junction box, and a joint end of the second high-voltage cable penetrating into the junction box, the joint ends of the first and second high-voltage cables being connected in the junction box; a cable lifting device mounted on a front end executing mechanism of the mine equipment, and used for lifting the second high-voltage cable led out of the cable bracket away from the ground, and when the mine equipment is transferred or moved, the second high-voltage cable is kept at a preset height above the ground by lifting action of the front end executing mechanism.
2. A protection and wear prevention system for a high voltage cable of a mine large equipment according to claim 1, characterized in that, The cable lifting device comprises: two oppositely arranged main support rods, the main support rods being in a trapezoidal shape or an arch shape; an upper convex circular arc plate fixed between upper regions of the two main support rods and used for supporting the second high-voltage cable; two hole hooks, one symmetrically arranged hole hook being fixed on an upper region of an outer side surface of each of the two main support rods, and the two hole hooks being cooperatively hung with a hanging rope to mount the cable lifting device on the executing mechanism.
3. The mine large equipment high-voltage cable protection and wear prevention system according to claim 2, characterized in that: the cable lifting device further comprises a plurality of cross struts, the plurality of cross struts being respectively fixed between front regions and rear regions of the main support rods; the cross struts are provided with mounting holes in middle regions in length directions of the cross struts, and are used for assembling cable fixing seats to fix the second high-voltage cable.
4. The mine large equipment high-voltage cable protection and wear prevention system according to claim 2, characterized in that: the main support rods are provided with reinforcing cross beams fixed at upper bending portions of the main support rods, and the hole hooks are fixed together with the reinforcing cross beams.
5. The protection and wear prevention system for high voltage cables of mine large equipment according to claim 1, characterized in that, The junction box comprises: a box body fixed on the cable bracket, a left side surface or a right side surface of the box body being provided as an open surface; a box cover assembled on the open surface of the box body by fasteners; cable fixing seats respectively mounted on front and rear side surfaces of the box body, the first high-voltage cable and the second high-voltage cable respectively penetrating into the box body through the cable fixing seats; insulation couplers used as quick plugs, the insulation couplers being arranged in the box body, the first high-voltage cable and the second high-voltage cable being respectively connected with two connecting bodies in the insulation couplers, and the two connecting bodies being connected to conduct the first high-voltage cable and the second high-voltage cable.
6. The protection and wear prevention system for a high voltage cable of a mine large equipment according to claim 1, characterized in that, The cable bracket comprises: a bracket bottom plate, a plurality of junction box mounting seats being provided in a middle rear region of the bracket bottom plate, the junction box being assembled on the junction box mounting seats by fasteners, and a plurality of cable fixing seats being provided in a front region of the bracket bottom plate, the second high-voltage cable being assembled on the cable fixing seats by clamping members; two bracket fixing supports oppositely fixed on a rear end of the bracket bottom plate and assembled on the vehicle frame by fasteners.
7. The protection and wear prevention system for high-voltage cables of a mine large equipment according to claim 6, characterized in that: the middle and rear part of the bracket bottom plate is a flat plate structure, and the front part of the bracket bottom plate is narrowed in width and upwardly bent to form an upturned structure.
8. A protection and wear prevention method for high-voltage cables of a mine large equipment, characterized in that: the internal cables of the mine equipment are electrically connected with the high-voltage cabinet and the current collector ring in the vehicle; the first high-voltage cable is electrically connected with the current collector ring, and the current collector ring is used for power transmission and rotation protection; the first high-voltage cable is led out from the vehicle frame and enters the junction box on the cable bracket; the second high-voltage cable for connecting with external power supply equipment enters the junction box, and the first high-voltage cable and the second high-voltage cable are connected in the junction box; the second high-voltage cable is led out from the junction box and guided to the cable bracket, and is fixed on the upturned structure of the cable bracket; the second high-voltage cable led out from the cable bracket passes through the cable lifting device hung on the front end executing mechanism of the mine equipment, and when the mine equipment is moved or turned, the second high-voltage cable is kept at a preset height above the ground by the lifting action of the front end executing mechanism, and the mine equipment is moved in the state that the high-voltage cable is lifted off the ground.
9. A mine large equipment, characterized in that: the mine large equipment comprises the protection and wear prevention system for high-voltage cables of a mine large equipment according to any one of claims 1 to 7.
10. The mine large equipment according to claim 9, characterized in that: the mine large equipment comprises a mine electric excavator or a mine electric loader.