A rotating cable carrier device for a complete equipment of an open pit mine
Patent Information
- Application Number
- CN202611302593.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2026-08-26
- Publication Date
- 2026-10-27
AI Technical Summary
[0003]针对现有技术存在的不足，本发明的目的是提供一种用于露天矿成套装备的转动电缆托架装置，解决了露天矿排土机受料臂与卸料车相对转动时电缆易缠绕、拉扯损伤的问题
与现有技术相比，本发明的有益效果是：该用于露天矿成套装备的转动电缆托架装置，包括固定支架、回转支承、转动托架和压板组成的装置，将电缆固定在转动托架上，另一侧固定到排土机受料臂上，通过设备间相对运动产生的电缆拉力带动转动托架随动旋转，最终实现保护电缆的功能。该结构简单易于实现，有效解决了设备相对运动引发的电缆损伤问题。排土机与卸料车作业时存在持续的相对转动与位置偏移，传统固定敷设方式下，由于电缆两端都是固定托架，只能通过预留一定的长度来避免相对运动造成电缆被拉断，但是当上下游两个装备因工艺需求往复运动而产生相对的角度及位移变化，特别是大角度转动时，导致电缆互相缠绕，同时造成各电缆受力不均，最终影响电缆使用寿命。本装置将电缆稳固约束在转动托架与设备电缆支架上，有效抑制了电缆在设备间相对运动导致的无序窜动及缠绕而引发的摩擦损耗和受力不均，从而延长电缆的使用寿命。同时装置具备随动调节功能，可在电缆拉力作用下自适应转动角度，与排土机受料臂保持同向运行，自适应补偿设备作业产生的角度与位移偏差。该结构有效消解了电缆转角处的拉应力与弯折应力，避免电缆硬性拉扯、过度弯折及缠绕变形，有效保护电缆线芯与绝缘层，降低损伤风险。大幅降低了露天复杂工况下电缆破损、短路、断电等故障概率，保障排土机与卸料车动力供电及控制信号传输的连续性与稳定性，显著延长电缆使用寿命，减少设备停机检修次数与运维成本，提升露天矿成套装备整体作业效率与运行安全性。
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Figure CN122992584A_ABST
Abstract
Description
Technical Field
[0001] This invention belongs to the field of open-pit mining equipment technology, and specifically relates to a rotating cable tray device for a complete set of open-pit mining equipment. Background Technology
[0002] The main core equipment for continuous open-pit mining includes two categories: First, the front-end bucket wheel excavator continuous mining equipment, typically consisting of a bucket wheel excavator, a transfer conveyor, a receiving car, and a belt conveyor at the mining face; second, the tail-end spoil disposal equipment, typically consisting of a belt conveyor at the spoil disposal face, an unloading car, and a spoil disposal machine. The characteristic of this type of open-pit mining equipment is that multiple large pieces of equipment need to be connected end-to-end for coordinated operation, and the power supply and control cables for the entire system must run through all the equipment. However, some pieces of equipment are not fixedly connected but rather move and rotate relative to each other. Therefore, a certain length of cable needs to be reserved at these locations to accommodate distance changes caused by relative movement and prevent cable breakage. However, due to the relative movement in space, the cables are prone to tangling, excessive bending, and severe wear, requiring regular manual maintenance and significantly impacting their service life. Summary of the Invention
[0003] To address the shortcomings of existing technologies, the purpose of this invention is to provide a rotating cable bracket device for open-pit mine equipment, which solves the problem of cable entanglement and pulling damage when the receiving arm of the open-pit mine dumper rotates relative to the unloading vehicle.
[0004] The technical solution adopted in this invention is: a rotating cable tray device for a complete set of equipment in open-pit mines, the key technical points of which include: Fixed bracket, slewing bearing, rotating bracket and pressure plate; The lower end of the slewing bearing is fixedly connected to the fixed bracket, the bottom mounting surface of the rotating bracket is fixedly connected to the upper end of the slewing bearing, the rotation center of the slewing bearing is coaxially set with the rotation axis of the head funnel of the unloading car, and the rotating bracket can rotate relative to the fixed bracket through the slewing bearing under the action of external force. The top of the rotating bracket is provided with a guide groove for accommodating the cable along its longitudinal direction; the two side walls of the guide groove are respectively provided with upwardly extending mounting connection parts. The pressure plate is arranged across the guide groove, and the two ends of the pressure plate are respectively placed on the mounting connection parts on both sides of the guide groove and fixedly connected by fasteners; the cable is accommodated in the guide groove, and a clearance is left between the lower end face of the pressure plate and the groove opening of the guide groove for the cable to pass through.
[0005] In the above scheme, the rotating bracket is a bridge-type structure with a mounting flange surface at the bottom, vertical column support on both sides, and an arc-shaped support surface at the top; the guide groove is a U-shaped guide groove opened along the contour direction of the arc-shaped support surface.
[0006] In the above scheme, the installation connection part provided at the top of the two sides of the guide groove is an extended support step; the pressure plate is a door-shaped structure, and the two ends of the pressure plate are respectively placed on the support step and fixedly installed on the support step by bolts.
[0007] In the above scheme, reinforcing ribs are provided between the two vertical columns on both sides of the rotating bracket and the top arc-shaped support surface; weight-reducing holes are provided in the side area between the reinforcing ribs and the arc-shaped support surface.
[0008] In the above scheme, an elastic buffer pad is attached to the lower end face of the pressure plate; the elastic buffer pad is sandwiched between the pressure plate and the surface of the cable, and abuts against the surface of the cable.
[0009] In the above scheme, the rotating cable bracket device is located at the junction of the head funnel of the unloading vehicle and the receiving arm of the dumper; one end of the cable is connected to the receiving arm of the dumper, and the other end of the cable extends outward through the guide groove. Compared with existing technologies, the beneficial effects of this invention are as follows: This rotating cable bracket device for open-pit mine equipment comprises a fixed bracket, a slewing bearing, a rotating bracket, and a pressure plate. The cable is fixed to the rotating bracket on one side and to the receiving arm of the dumper on the other. The cable tension generated by the relative movement between the equipment drives the rotating bracket to rotate accordingly, ultimately protecting the cable. This structure is simple and easy to implement, effectively solving the problem of cable damage caused by relative movement between equipment. During operation, the dumper and unloading vehicle experience continuous relative rotation and positional shifts. In traditional fixed laying methods, since both ends of the cable are fixed brackets, only a certain length can be reserved to prevent the cable from being pulled apart by relative movement. However, when the upstream and downstream equipment reciprocate due to process requirements, resulting in relative angle and displacement changes, especially during large-angle rotation, the cables become entangled, causing uneven stress on each cable and ultimately affecting the cable's service life. This device securely restrains the cable to the rotating bracket and the equipment cable support, effectively suppressing the friction loss and uneven stress caused by the disorderly movement and entanglement of the cable due to relative motion between equipment, thereby extending the cable's service life. Simultaneously, the device has a follow-up adjustment function, which can adaptively rotate the angle under cable tension, maintaining the same direction as the receiving arm of the dumper, and adaptively compensating for angular and displacement deviations caused by equipment operation. This structure effectively eliminates tensile and bending stresses at cable corners, avoiding rigid pulling, excessive bending, and entanglement deformation of the cable, effectively protecting the cable core and insulation layer, and reducing the risk of damage. It significantly reduces the probability of cable damage, short circuits, and power outages under complex open-pit conditions, ensuring the continuity and stability of power supply and control signal transmission for the dumper and unloading vehicle, significantly extending cable service life, reducing equipment downtime for maintenance and operating costs, and improving the overall operational efficiency and safety of open-pit mining equipment. Attached Figure Description
[0010] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0011] Figure 1 This is a schematic diagram of the composition of a rotating cable tray device for open-pit mine equipment in an embodiment of the present invention.
[0012] Figure 2 This is a schematic diagram showing the relative rotation between the unloading car and the receiving arm; Figure 3 This is a schematic diagram showing the connection of the fixed bracket, slewing bearing, and rotating bracket; Figure 4 This is a detailed schematic diagram of the pressure plate structure; The numbers in the diagram are explained as follows: 1. Fixed bracket, 2. Slewing bearing, 3. Rotating bracket, 4. Pressure plate, 5. Unloading vehicle, 6. Head funnel, 7. Receiving arm of the soil dumper, 8. Cable, 9. Rubber plate. Detailed Implementation
[0013] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the following description is provided in conjunction with the accompanying drawings. Figures 1-4 The present invention will be further described in detail below with reference to specific embodiments.
[0014] This embodiment provides a rotating cable tray device for open-pit mine equipment. This device is mainly used for cable connection and guidance between large mobile machinery such as open-pit mine unloading trucks and spoil heaps. The limiting angle between the equipment typically does not exceed ±125°, and there are no operating conditions involving relative 360° rotation or continuous unidirectional rotation. (Refer to...) Figure 1 and Figure 2 The device is located at the material transfer junction between the head hopper 6 of the unloading vehicle 5 and the receiving arm 7 of the dumper. One end of the cable 8 is connected to the receiving arm 7 of the dumper, and the other end extends through the rotating cable bracket device of this embodiment to other equipment. This device is used to ensure that the cable 8 remains in a neat routing state during this rotation process, avoiding damage from pulling.
[0015] Specifically, such as Figure 1 , Figure 3 As shown, the rotating cable tray device includes a fixed bracket 1, a slewing bearing 2, a rotating bracket 3, and a pressure plate 4. The fixed bracket 1 serves as the base of the entire device and is fixedly mounted on the frame of the unloading vehicle 5. The lower end of the slewing bearing 2 is fixedly connected to the fixed bracket 1. The slewing bearing 2 is typically a four-point ball contact type, and the rotation center of the device is installed as coaxially as possible with the rotation axis of the head funnel 6. In actual working conditions, the weight of the cable 8 itself and the offset center of gravity of the rotating bracket 3 will generate an overturning moment acting on the slewing bearing 2. If the equipment cables are thick, numerous, and heavy, the resulting overturning moment will affect its rotational flexibility. In such cases, the diameter of the slewing bearing can be appropriately increased, or a cross-roller type slewing bearing with better anti-overturning performance can be selected. The slewing bearing is a lubricated rolling bearing with low frictional resistance. It can sensitively respond to the tension generated by the cable due to the relative movement between equipment and rotate adaptively with it without affecting the cable.
[0016] In this embodiment, the bottom mounting surface of the rotating bracket 3 is fixedly connected to the upper end of the slewing bearing 2. For example... Figure 3As shown, the rotating bracket 3 adopts a bridge-type structural design, with a mounting flange at the bottom for fixing and connecting the slewing bearing 2; its two sides are supported by vertical columns, and the top is an arc-shaped support surface. In a preferred embodiment, the side plates of the vertical columns on both sides of the rotating bracket 3 are integrally connected to the side plate of the top arc-shaped support surface, and an arc-shaped transition rib is provided between them to enhance the torsional and bending strength at the junction of the columns and the top support surface. Simultaneously, weight-reducing holes are provided in the area between the arc-shaped transition rib and the arc-shaped support surface, effectively lowering the center of gravity of the overall device and reducing the load burden on the lower slewing bearing 2 while ensuring structural strength.
[0017] To secure and guide the cable 8, the top of the rotating bracket 3 has a U-shaped groove structure, forming a guide groove for accommodating the cable 8. The bottom of the guide groove is an arc-shaped support surface, which ensures that the cable 8 maintains a large bending radius when passing through the bracket, preventing damage due to excessive bending. The tops of the two sides of the guide groove are respectively provided with upwardly extending mounting connections. Preferably, these mounting connections are support steps extending outward from the top of the groove wall. The pressure plate 4 spans the guide groove, and its two ends are respectively placed on the support steps on both sides of the guide groove and fixedly connected by fastening bolts. Furthermore, to prevent the bolts from loosening or directly damaging the cable sheath, an elastic buffer pad, such as a rubber plate 9, is attached to the bottom (lower end face) of the pressure plate 4. When the bolts are tightened, the pressure plate 4 presses against the elastic buffer pad, causing the elastic buffer pad to elastically contact the surface of the cable 8. At this time, the cable 8 is accommodated in the guide groove. Since there is a clearance between the lower end face of the pressure plate 4 and the opening of the guide groove for the cable 8 to pass through, the pressure plate 4 and the guide groove together form a limiting cavity that restricts the cable from jumping up and down and prevents it from coming out radially.
[0018] During installation, the fixed bracket 1 in this embodiment is fixed to the unloading vehicle 5, and the rotation center of the slewing bearing 2 is made to coincide as much as possible with the rotation axis of the head funnel 6. When the receiving arm 7 of the soil dumping machine rotates around the head funnel 6, the rotation center of the cable 8 should be kept as consistent as possible with the rotation center of the equipment. This coaxial arrangement design can eliminate the additional tensile force caused by eccentric rotation to the greatest extent, effectively avoiding the cable 8 from tangling, twisting, or interfering with surrounding equipment during rotation, thereby significantly improving the operational reliability and service life of the cable under complex working conditions.
[0019] Brief description of working principle: During open-pit mining operations, the power and control cables of the dumping machine and unloading truck are connected to the electrical room of the dumping machine via the working face belt conveyor and the unloading truck. When the cable passes the transfer point between the unloading truck and the receiving arm of the dumping machine, due to the relative movement between the upstream and downstream equipment, a certain length of cable needs to be reserved at this point to accommodate the changes in distance and angle caused by the movement.
[0020] When the receiving arm 7 of the dumper rotates relative to the unloading vehicle 5 (for example) Figure 2 At the 144° turn (as shown), since one end of cable 8 is fixedly connected to the receiving arm 7 and the other end passes through the rotating cable bracket device, the tensile force generated by cable 8 is transmitted to the rotating bracket 3. At this time, under the action of the tensile force, the rotating bracket 3 will drive the outer ring of the slewing bearing 2 below to rotate freely relative to the inner ring. During the rotation, cable 8 is always constrained within the U-shaped guide groove and maintains a smooth cable routing with the cooperation of the pressure plate 4 and the elastic buffer pad, thereby effectively protecting cable 8 from excessive pulling and mechanical wear.
[0021] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.
Claims
1. A rotating cable tray device for open-pit mine equipment, characterized in that, include: Fixed bracket (1), slewing bearing (2), rotating bracket (3) and pressure plate (4); The lower end of the slewing bearing (2) is fixedly connected to the fixed bracket (1), the bottom mounting surface of the rotating bracket (3) is fixedly connected to the upper end of the slewing bearing (2), the rotation center of the slewing bearing (2) is coaxially set with the rotation axis of the head funnel (6) of the unloading car (5), and the rotating bracket (3) can rotate relative to the fixed bracket (1) through the slewing bearing (2) under the action of external force. The top of the rotating bracket (3) is provided with a guide groove for accommodating the cable (8) along its longitudinal direction; the two sides of the guide groove are respectively provided with upwardly extending mounting connection parts. The pressure plate (4) is arranged across the guide groove, and the two ends of the pressure plate (4) are respectively placed on the mounting connection parts on both sides of the guide groove and fixedly connected by fasteners; the cable (8) is accommodated in the guide groove, and a clearance is left between the lower end face of the pressure plate (4) and the groove opening of the guide groove for the cable (8) to pass through.
2. The rotating cable tray device for open-pit mine equipment according to claim 1, characterized in that, The rotating bracket (3) is a bridge-type structure with a mounting flange at the bottom, vertical columns on both sides, and an arc-shaped support surface at the top; the guide groove is a U-shaped guide groove opened along the outline of the arc-shaped support surface.
3. The rotating cable tray device for open-pit mine equipment according to claim 2, characterized in that, The mounting connection provided on the top of the two sides of the guide groove is an extended support step; the pressure plate (4) is a door-shaped structure, and the two ends of the pressure plate (4) are respectively placed on the support step and fixedly installed on the support step by bolts.
4. The rotating cable tray device for open-pit mine equipment according to claim 2, characterized in that, The rotating bracket (3) has reinforcing ribs between its two vertical columns and the top arc-shaped support surface; weight-reducing holes are provided in the side area between the reinforcing ribs and the arc-shaped support surface.
5. The rotating cable tray device for open-pit mine equipment according to claim 1, characterized in that, The lower end face of the pressure plate (4) is provided with an elastic buffer pad; the elastic buffer pad is sandwiched between the pressure plate (4) and the surface of the cable (8) and abuts against the surface of the cable (8).
6. The rotating cable tray device for open-pit mine equipment according to claim 1, characterized in that, One end of the cable (8) is connected to the receiving arm (7) of the soil dumper, and the other end of the cable (8) extends outward through the guide groove.