Power supply system, mining system and power supply control method for electric shovel in open-pit mine

Abstract

The embodiment of the present application discloses a strip mine mining electric shovel power supply system, a mining system and a power supply control method. The strip mine mining electric shovel power supply system comprises a power supply box, a first power supply line and a second power supply line. In the use process, the power supply box is used for being connected to an external power supply, and in the working process of the electric shovel, the first power supply line can be used for supplying power to the electric shovel first, the second power supply line can be arranged at the next station first, and after the electric shovel completes the current work, the second power supply line can be moved to the next station. At this time, the first power supply line is disconnected with the electric shovel, and the electric shovel is supplied with power through the second power supply line located at the next station. Then the first power supply line is moved to the next station. In this way, the first power supply line and the second power supply line are alternately used for supplying power to the electric shovel. The movement of the power supply line and the electric shovel is alternately performed, the work efficiency of the workers and the work equipment can be improved, the cost can be reduced, and the failure rate can be reduced.

Description

Power supply system, mining system and power supply control method for electric shovels in open-pit mining Technical Field

[0001] This application relates to the field of open-pit mining technology, and in particular to an electric shovel power supply system, mining system and power supply control method for open-pit mining. Background Technology

[0002] Electric shovels are one of the main mining equipment in open-pit mines with a capacity of tens of millions of tons. They are highly productive, have a high operating rate, and low operating costs, making them a recognized type of machine in the mining industry. Electric shovels are the main mining equipment in various modern open-pit mines. The bucket of an electric shovel is usually rigidly fixed to the boom and pulled into the material to be excavated by a steel cable. Through the circular motion of the electric shovel, the heavy material in the bucket is moved to the cargo hold of a heavy-duty truck or railcar for transportation.

[0003] Considering the limited mechanical mobility of electric shovels, some open-pit coal mines currently use a double-sided loading method for loading materials onto trucks, where heavy-duty trucks move to either side of the shovel to await material handling. Electric shovels require cable power; as the shovel moves, the power cable also needs to move. In traditional technology, the power supply cable must move synchronously with the shovel. In this situation, workers and auxiliary equipment must simultaneously support the movement of both the cable and the shovel, resulting in low efficiency, high manpower requirements, and potential chaos at the work site, impacting the mining process. Summary of the Invention

[0004] The present invention aims to solve at least one of the technical problems existing in the prior art or related art.

[0005] Therefore, a first aspect of the present invention provides a power supply system for electric shovels used in open-pit mining.

[0006] A second aspect of the present invention provides an open-pit mining system.

[0007] A third aspect of the present invention provides a method for controlling the power supply of an electric shovel.

[0008] In view of this, a power supply system for an electric shovel in open-pit mining is proposed according to a first aspect of the embodiments of this application, comprising: a power supply box, wherein the input terminal of the power supply box is used to connect to an external power source;

[0009] A first power supply line and a second power supply line are connected to the output end of the power supply box. The first power supply line and the second power supply line are used to alternately supply power to the electric shovel.

[0010] In one feasible implementation, the power supply system for electric shovels in open-pit mining also includes:

[0011] Multiple power supply trenches are constructed on the surface of the open-pit mine along the working direction of the electric shovel, the trenches serving to accommodate and bury the first or second power supply line; and / or

[0012] Multiple brackets are provided, and the brackets are divided into multiple groups. Each group includes two brackets, and the two brackets are arranged adjacent to each other to form a passage space between the two adjacent brackets. Each group of brackets supports a first power supply line or a second power supply line.

[0013] In one feasible implementation, the power supply system for electric shovels in open-pit mining also includes:

[0014] A forklift, used to move the support frame;

[0015] An excavator, used for digging the trench.

[0016] In one feasible implementation, the support includes:

[0017] Base;

[0018] A vertical rod, which is connected to the base;

[0019] A hinged rod, which is hinged to the vertical rod;

[0020] A first drive assembly is connected to the hinge rod and is used to drive the hinge rod to rotate.

[0021] A support member and a second drive assembly are provided. The support member is disposed at the end of the hinge rod away from the base. The second drive assembly is connected to the support member and is used to control the setting angle of the support member. The support member is used to support the power supply line.

[0022] In one feasible implementation, the vertical rod includes;

[0023] A rod, which is connected to the base;

[0024] Side plates, two of which are connected to the rod body and are arranged at intervals;

[0025] A hinge shaft passes through the side plate and the vertical rod to hinge the hinge rod to the vertical rod;

[0026] Wherein, the distance between the hinge point of the vertical rod and the end of the vertical rod closer to the base is less than the distance between the hinge point and the end of the vertical rod farther from the base.

[0027] In one possible implementation, the base includes:

[0028] seat body;

[0029] Casters, the casters being connected to the base;

[0030] The base body has mounting holes for inserting the shovel teeth of a forklift, or for inserting a connecting rod connected to the forklift; and / or

[0031] The seat is made of concrete.

[0032] According to a second aspect of the embodiments of this application, an open-pit mining system is provided, comprising:

[0033] The power supply system for electric shovels used in open-pit mining as described in any of the above technical solutions;

[0034] The electric shovel and two transport vehicles are provided. The power supply system for the electric shovel in the open-pit mine is used to supply power to the electric shovel, and the transport vehicles are arranged on both sides of the electric shovel to transport ore alternately.

[0035] The transport vehicle travels through the passage space above the cable tray of the open-pit mining system and / or between two adjacent supports to avoid the first power supply line and the second power supply line.

[0036] According to a third aspect of the embodiments of this application, a power supply control method for an electric shovel is provided, applied to an open-pit mining system as described in any of the above technical solutions, the power supply control method for the electric shovel comprising:

[0037] Based on the working direction and working radius of the electric shovel, multiple working locations are determined;

[0038] During the operation of the electric shovel at the first working position, the electric shovel is powered on through one of the first power supply line and the second power supply line.

[0039] When the electric shovel is moved to the second working position, the electric shovel is powered on via the other of the first power supply line and the second power supply line.

[0040] In one feasible implementation, the power supply system for the electric shovel in open-pit mining includes six supports, which are divided into three groups: the first group of supports, the second group of supports, and the third group of supports.

[0041] The step of powering the electric shovel with one of the first power supply line and the second power supply line during the operation of the electric shovel at the first working position includes:

[0042] When the electric shovel is operating in the first working position, the electric shovel is powered by the first power supply line and the first set of brackets, and the position of the second set of brackets is adapted to the second working position of the electric shovel, and the second power supply line is set on the second set of brackets.

[0043] The step of powering the electric shovel with the other of the first and second power supply lines when the electric shovel is moved to the second working position includes:

[0044] When the electric shovel completes mining at the first working position and moves to the second working position, it is powered by the second power supply line.

[0045] In one feasible implementation, the electric shovel power supply control method further includes:

[0046] During the mining process at the second working position of the electric shovel, the first set of supports is moved so that the first set of supports is located on the side of the third set of supports away from the second set of supports, and the first power supply line is set on the third set of supports.

[0047] When the electric shovel completes mining at the second working position and moves to the third working position, it is powered by the first power supply line.

[0048] Compared with the prior art, the present invention has at least the following beneficial effects:

[0049] The electric shovel power supply system for open-pit mining provided in this application includes a power supply box, a first power supply line, and a second power supply line. During use, the power supply box is connected to an external power source. While the shovel is working, it is initially powered by the first power supply line. The second power supply line is initially positioned at the next work station. After the shovel completes its current task, it moves to the next work station, at which point the first power supply line is disconnected from the shovel, and power is supplied by the second power supply line at the next work station. Then, the first power supply line is moved to the next work station. This arrangement alternates between the first and second power supply lines, with the shovel and power supply lines moving alternately. For example, if the shovel's working time at a single work point may reach 5 hours, either the first or second power supply line can be moved during these 5 hours. After the shovel completes its work at the current work point, all manpower and auxiliary equipment can be deployed to move the shovel. This arrangement improves the efficiency of personnel and equipment operations, reduces costs, and lowers the failure rate. Attached Figure Description

[0050] Various other advantages and benefits will become apparent to those skilled in the art upon reading the following detailed description of preferred embodiments. The accompanying drawings are for illustrative purposes only and are not intended to limit the scope of this application. Furthermore, the same reference numerals denote the same parts throughout the drawings. In the drawings:

[0051] Figure 1 is a schematic structural diagram of an electric shovel power supply system for open-pit mining according to an embodiment of this application;

[0052] Figure 2 is a schematic structural diagram of the support frame of an electric shovel power supply system for open-pit mining according to an embodiment of this application, taken from one angle.

[0053] Figure 3 is a schematic structural diagram of the support frame of an electric shovel power supply system for open-pit mining according to an embodiment of this application from another angle;

[0054] Figure 4 is a schematic structural diagram of the support frame of the electric shovel power supply system for open-pit mining according to an embodiment of this application from another angle;

[0055] Figure 5 is a schematic structural diagram of the support frame of an electric shovel power supply system for open-pit mining according to an embodiment of this application from another angle;

[0056] Figure 6 is a schematic structural diagram of the support frame of the electric shovel power supply system for open-pit mining according to another embodiment of this application;

[0057] Figure 7 is a schematic structural diagram of an open-pit mining system according to an embodiment of this application;

[0058] Figure 8 is a schematic flowchart of the steps of an electric shovel power supply control method according to an embodiment of this application.

[0059] The correspondence between the reference numerals and component names in Figures 1 to 7 is as follows:

[0060] 110 power supply box, 120 first power supply line, 130 second power supply line, 140 bracket, 150 articulated bracket;

[0061] 141 First group of brackets, 142 Second group of brackets, 143 Third group of brackets, 144 Base, 145 Vertical rod, 146 Hinge rod, 147 First drive assembly, 148 Support piece, 149 Second drive assembly;

[0062] 1441 Base, 1442 Casters, 1443 Mounting Holes, 1451 Rod, 1452 Side Plate, 1453 Hinge Shaft;

[0063] 210 electric shovel. Detailed Implementation

[0064] To better understand the above technical solutions, the technical solutions of the embodiments of this application will be described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the embodiments of this application and the specific features in the embodiments are detailed descriptions of the technical solutions of the embodiments of this application, rather than limitations on the technical solutions of this application. In the absence of conflict, the embodiments of this application and the technical features in the embodiments can be combined with each other.

[0065] As shown in Figures 1 to 7, a power supply system for an electric shovel in open-pit mining is proposed according to a first aspect of the present application, comprising: a power supply box 110, the input terminal of which is connected to an external power source; a first power supply line 120 and a second power supply line 130, which are connected to the output terminal of the power supply box 110, and the first power supply line 120 and the second power supply line 130 are used to alternately supply power to the electric shovel 210.

[0066] As shown in Figures 1 and 7, the power supply system for an electric shovel in open-pit mining provided in this embodiment includes a power supply box 110, a first power supply line 120, and a second power supply line 130. During use, the power supply box 110 is connected to an external power source. While the electric shovel 210 is working, it is initially powered by the first power supply line 120. The second power supply line 130 can be initially positioned at the next work station. After the electric shovel 210 completes its current task, it can move to the next work station. At this time, the first power supply line 120 is disconnected from the electric shovel 210, and power is supplied to the electric shovel 210 through the second power supply line 130 located at the next work station. Then, the first power supply line 120 is moved to the next work station. This setup allows the first power supply line 120 and the second power supply line 130 to alternately supply power to the electric shovel 210. The movement of the power supply lines and the electric shovel 210 is carried out alternately. If the working time of the electric shovel 210 at a work point may reach 5 hours, the first power supply line 120 or the second power supply line 130 can be moved during the 5 hours of the electric shovel 210's operation. After the electric shovel 210 completes the work at the current work point, all manpower can be devoted to moving the electric shovel 210. This setup can improve the working efficiency of the operators and equipment, reduce costs, and reduce the failure rate.

[0067] In some examples, at least a portion of the first power supply line 120 and the second power supply line 130 are arranged at intervals, and the ratio of the distance between the first power supply line 120 and the second power supply line 130 to the working radius of the electric shovel 210 is less than or equal to 2.

[0068] In one feasible implementation, the power supply system for an electric shovel in an open-pit mine further includes: multiple trenches, which are opened on the ground of the open-pit mine along the working direction of the electric shovel 210, and the trenches are used to accommodate and fill the first power supply line 120 or the second power supply line 130.

[0069] In this technical solution, considering that the ore mined by the electric shovel 210 needs to be transported by a transport vehicle, and that the travel route of the transport vehicle will intersect with the first power supply line 120 and the second power supply line 130, the open-pit mining electric shovel power supply system provided in this application embodiment can also include multiple trenches. With this arrangement, the first power supply line 120 or the second power supply line 130 can be placed in the trench, and then the trench can be filled, so that the vehicle can travel above the first power supply line 120 and the second power supply line 130.

[0070] It is understood that the electric shovel 210 can have multiple working positions, and each working position can correspond to a trench. Furthermore, since the open-pit mining electric shovel power supply system provided in this application embodiment includes a first power supply line 120 and a second power supply line 130, the trench can be dug while the electric shovel 210 is in the mining state through the dual power supply setting. Based on this, the opening of the first power supply line 120, the second power supply line 130 and the trench can be carried out alternately with the movement of the electric shovel 210, which can improve the working efficiency of operators and equipment, reduce costs, and reduce the failure rate.

[0071] In one feasible implementation, the power supply system for electric shovels in open-pit mines further includes: multiple supports 140, which are divided into multiple groups, each group including two supports 140, and the two supports 140 are arranged adjacent to each other to form a vehicle passage space between the two adjacent supports 140, and each group of supports 140 supports a first power supply line 120 or a second power supply line 130.

[0072] In this technical solution, the power supply system for electric shovels in open-pit mines can also include multiple supports 140. During use, the cables can be supported by the supports 140, and vehicles can travel between two supports 140, which can also help to avoid the first power supply line 120 and the second power supply line 130.

[0073] In one feasible implementation, the power supply system for an electric shovel in open-pit mining also includes: a shovel for moving the support 140; and an excavator for digging trenches.

[0074] In this technical solution, the power supply system for the electric shovel in open-pit mining can also include a shovel. The shovel can move the support 140. The power supply system for the electric shovel in open-pit mining can be configured with multiple supports 140, a first power supply line 120 and a second power supply line 130. The movement of the supports 140, the first power supply line 120 and the second power supply line 130 can be alternated with the movement of the electric shovel 210, which can also improve efficiency.

[0075] In this technical solution, the power supply system for electric shovels in open-pit mines may also include a digging component, which facilitates the opening of trenches.

[0076] As shown in Figures 2 to 6, in one feasible embodiment, the bracket 140 includes: a base 144; a vertical rod 145 connected to the base 144; a hinge rod 146 hinged to the vertical rod 145; a first drive assembly 147 connected to the hinge rod 146 for driving the hinge rod 146 to rotate; a support member 148 and a second drive assembly 149, wherein the support member 148 is disposed at the end of the hinge rod 146 away from the base 144, and the second drive assembly 149 is connected to the support member 148 for controlling the setting angle of the support member 148, and the support member 148 is used to support the power supply line.

[0077] This technical solution further provides the structural composition of the bracket 140, which includes a base 144, a vertical rod 145, a hinge rod 146, a first drive assembly 147, a support member 148, and a second drive assembly 149. In use, the bracket 140 provided in this embodiment is erected in an open-pit mine. The power supply line for powering the electric shovel 210 can be supported by the support member 148 located on the hinge rod 146. Specifically, the base 144 of the bracket 140 can be placed on the ground of the open-pit mine. During the erection of the power supply line, the position of the hinge rod 146 can be adjusted by the first drive assembly 147 to lower the hinge rod 146, and then the support member can be adjusted by the second drive assembly 149. The setting angle of the support member 148 ensures that the opening direction of the support member 148 is always arranged vertically during the rotation of the hinge rod 146, so that the power supply line is erected inside the support member 148. Finally, the position of the support member 148 is adjusted by the first drive component 147 to support the power supply line. Based on this, the bracket 140 provided in this application embodiment can support the power supply line, and vehicles used for ore mining or waste rock transportation can drive under the power supply line without the weight of the vehicle acting on the power supply line, ensuring the safe operation of the electric shovel 210. At the same time, the bracket 140 provided in this application embodiment facilitates the erection of the power supply line, especially the placement of the power supply line inside the support member 148, which can provide stable support for the power supply line.

[0078] As shown in Figures 2 and 3, in one feasible embodiment, the vertical rod 145 includes: a rod body 1451 connected to the base 144; two side plates 1452 connected to the rod body 1451 and spaced apart; and a hinge shaft 1453 passing through the side plates 1452 and the vertical rod 145 to hinge a hinge rod 146 to the vertical rod 145; wherein the distance at which the hinge of the vertical rod 145 is located at the end of the vertical rod 145 closer to the base 144 is less than the distance at which the hinge of the vertical rod 145 is located at the end of the vertical rod 145 farther from the base 144.

[0079] In this technical solution, the structural composition of the vertical rod 145 is further provided. The vertical rod 145 may include a rod body 1451, a side plate 1452, and a hinge shaft 1453. The rod body 1451 facilitates the connection with the base 1441. The side plate 1452 facilitates the fixing of the hinge shaft 1453 and the hinge setting of the hinge rod 146. On the other hand, the side plate 1452 can limit the degree of freedom of the hinge rod 146 so that the hinge rod 146 can swing in the expected direction.

[0080] In this technical solution, the distance between the hinge of the vertical rod 145 and the end of the vertical rod 145 closer to the base 144 is less than the distance between the hinge of the vertical rod 145 and the end of the vertical rod 145 farther from the base 144. Based on this, when the hinge rod 146 is tilted, the hinge rod 146 can swing under its own gravity to lower the position of the support member 148. Based on this, the position of the hinge rod 146 can be adjusted by providing auxiliary pulling action through the first drive assembly 147, which simplifies the structure of the first drive assembly 147.

[0081] In one feasible implementation, the first drive assembly 147 includes a first motor and a first track, the first motor being connected to the first track and the first track being connected to a hinge rod 146, the first motor being used to drive the first track to tighten or loosen in order to adjust the setting angle of the hinge rod 146.

[0082] In this technical solution, the structure of the first drive assembly 147 is further provided. The first drive assembly 147 may include a first motor and a first track. The first track is connected to the articulated rod 146. The first motor drives the first track to move. By controlling the contraction or relaxation of the first track, the effective length of the first track can be adjusted, thereby adjusting the swing amplitude of the articulated rod 146 relative to the vertical rod 145. Based on this, the effective height of the support member 148 can be adjusted. When the effective height of the support member 148 is lowered, the power supply line can be laid on the support member 148. Then, by controlling the rise of the support member 148, the ground clearance of the power supply line can be increased, making it easier for the vehicle to travel under the power supply line.

[0083] In one feasible implementation, the second drive assembly 149 includes a second motor and a second track, a support member 148 hinged to the end of the hinge rod 146, the support member 148 including a V-shaped opening, the second track connected to the support member 148 and the second motor, the second motor being used to drive the second track to tighten or loosen to adjust the setting angle of the support member 148.

[0084] In this technical solution, the structure of the second drive assembly 149 is further provided. The second drive assembly 149 may include a second motor and a second track. By controlling the effective length of the second track with the second motor and cooperating with the hinged setting of the support member 148, the opening direction of the V-shaped opening of the support member 148 can be adjusted. By using the first drive assembly 147 in conjunction with the second drive assembly 149, the V-shaped opening on the support member 148 can always be set vertically. This setting can reduce the probability of the power supply line falling off through the support member 148.

[0085] As shown in Figures 4 and 5, in one feasible embodiment, the base 144 includes: a base body 1441; a caster 1442 connected to the base body 1441; wherein, the base body 1441 has a mounting hole 1443 for inserting the shovel teeth of the forklift, or for inserting a connecting rod connected to the forklift.

[0086] In this technical solution, a base 144 is further provided. The base 144 may include a seat 1441 and casters 1442. This arrangement takes into account that the position of the electric shovel 210 needs to be moved during actual production. Based on this, the position of the power supply line also needs to be moved. With the base 144 including casters 1442 and seat 1441, the support 140 can be pushed by engineering vehicles at the mining site to move the power supply line. For example, the engineering vehicles can be loaders or bulldozers. The setting of casters 1442 can reduce the friction of the base 144, making it easier to move the support 140.

[0087] In this technical solution, the base 1441 has an assembly hole 1443 for inserting the shovel teeth of the forklift. When the support 140 is moved by the forklift, the shovel teeth of the forklift can be inserted into the assembly hole 1443. The forklift and the base 144 have a certain connection relationship, which can reduce the probability of the support 140 tipping over.

[0088] In this technical solution, the mounting hole 1443 on the base 144 can also be used to insert the connecting rod, and then the connecting rod is connected to the loader. For example, a connecting seat can be set on the loader, and the connecting rod can be connected to the connecting seat by bolts or welding. Based on this, the loader and the base 144 can also have a certain connection relationship, which can reduce the probability of the support 140 tipping over.

[0089] In one feasible implementation, the seat 1441 is made of concrete.

[0090] In this technical solution, the base 1441 of the base 144 can be made of concrete. This design has two advantages: firstly, concrete has better insulation properties, making the use of the support 140 safer; secondly, the higher density of concrete can lower the center of gravity of the support 140, further reducing the probability of the support 140 tipping over during movement.

[0091] In one possible embodiment, the base 144 further includes: a pivot shaft having at least two mounting positions with the base 1441, a caster 1442 connected to the pivot shaft, wherein when the pivot shaft is in the first mounting position, the caster 1442 is housed within the base 144, and when the pivot shaft is in the second mounting position, at least a portion of the caster 1442 extends through the base 144.

[0092] In this technical solution, the base 144 may also include bearings, which facilitate the rotation of the casters 1442.

[0093] In this technical solution, the pivot and the base 1441 have at least two mounting positions, which allows the caster 1442 to be retracted or extended. When the bracket 140 is fixed and does not need to be moved, the caster 1442 can be in a retracted state to make the fixing of the bracket 140 more reliable. When the bracket 140 needs to be moved, the caster 1442 can be extended to facilitate the movement of the bracket 140.

[0094] As shown in Figure 6, in some examples, the support 140 may also include a hinge frame 150, one end of which is hinged to the middle of the vertical rod 145, and the other end is used to be mounted on a forklift for moving the support 140. This arrangement makes the movement of the support 140 more reliable.

[0095] According to a second aspect of the embodiments of this application, an open-pit mining system is provided, comprising: an open-pit mining electric shovel power supply system as described in any of the above technical solutions; an electric shovel 210 and two transport vehicles, wherein the open-pit mining electric shovel power supply system is used to supply power to the electric shovel 210, and the transport vehicles are arranged on both sides of the electric shovel 210 to alternately transport ore; wherein the transport vehicles travel through the passage space above the open-pit mining system cable tray and / or between two adjacent supports 140 to avoid the first power supply line 120 and the second power supply line 130.

[0096] The open-pit mining system provided in this application includes the open-pit mining electric shovel power supply system described above, and therefore possesses all the beneficial effects of the open-pit mining electric shovel power supply system described above.

[0097] The open-pit mining system provided in this application includes an electric shovel power supply system, an electric shovel 210, and two transport vehicles. During operation, the electric shovel 210 is used to mine ore, and the two transport vehicles are in a standby state, with one vehicle loading ore and the other waiting for ore to be loaded. This improves the efficiency of ore transportation. The transport vehicles travel through the passage space above the cable tray of the open-pit mining system and / or between two adjacent supports 140 to avoid damage to the first power supply line 120 and the second power supply line 130, thereby improving the safety of the open-pit mining system operation.

[0098] As shown in Figure 8, a power supply control method for an electric shovel is proposed according to a third aspect of the embodiments of this application, applied to an open-pit mining system as described in any of the above technical solutions. The power supply control method for the electric shovel includes:

[0099] Step 301: Determine multiple working locations based on the working direction and working radius of the electric shovel;

[0100] Step 302: During the operation of the electric shovel at the first working position, power the electric shovel through one of the first power supply line and the second power supply line;

[0101] Step 303: With the electric shovel moved to the second working position, power the electric shovel through the other of the first and second power supply lines.

[0102] The electric shovel power supply control method provided in this application embodiment is applied to the open-pit mining system of any of the above technical solutions. Therefore, the electric shovel power supply control method has all the beneficial effects of the open-pit mining system of the above technical solutions.

[0103] The control method provided in this application first determines multiple working positions based on the working direction and working radius of the electric shovel 210, and then determines the power supply positions of the first power supply line 120 and the second power supply line 130 based on the working positions. This allows the second power supply line 130 to wait at the second working position to power the electric shovel 210 when it is working at the first working position. When the electric shovel 210 moves to the second working position, it can be directly powered through the second power supply line 130. When the electric shovel 210 performs mining operations at the second working position, the first power supply line 120 can move to the third working position. By repeating this cycle, the electric shovel 210 can be powered alternately by the first power supply line 120 and the second power supply line 130. The movement of the power supply lines and the electric shovel 210 can be carried out alternately. For example, if the working time of the electric shovel 210 at a work point may reach 5 hours, the first power supply line 120 or the second power supply line 130 can be moved during the 5 hours of operation. After the electric shovel 210 completes the work at the current work point, all manpower can be devoted to moving the electric shovel 210. This setup can improve the working efficiency of the operators and equipment, reduce costs, and reduce the failure rate.

[0104] In one feasible implementation, the power supply system for electric shovels in open-pit mining includes six supports 140, which are divided into three groups: the first group of supports 141, the second group of supports 142, and the third group of supports 143.

[0105] The steps of powering the electric shovel 210 to the first working position after it has completed its work include:

[0106] When the electric shovel 210 is working in the first working position, the electric shovel 210 is powered by the first power supply line and the first set of brackets 141, and the position of the second set of brackets 142 is adapted to the second working position of the electric shovel 210, and the second power supply line 130 is set on the second set of brackets 142.

[0107] When the electric shovel 210 is moved to the second working position, the step of powering the electric shovel 210 via the other of the first power supply line 120 and the second power supply line 130 includes:

[0108] When the electric shovel 210 completes mining at the first working position and moves to the second working position, it is powered by the second power supply line.

[0109] In one feasible implementation, the electric shovel power supply control method further includes:

[0110] During the mining process at the second working position of the electric shovel 210, the first set of supports 141 is moved so that the first set of supports 141 is located on the side of the third set of supports 143 away from the second set of supports 142, and the first power supply line 120 is set on the third set of supports 143.

[0111] When the electric shovel 210 completes mining at the second working position and moves to the third working position, it is powered by the first power supply line.

[0112] As shown in Figure 7, using the electric shovel 210 mining scheduling method provided in this application embodiment, multiple supports 140 are divided into three groups of two, namely the first group of supports 141, the second group of supports 142, and the third group of supports 143. Based on this, during the mining process using the electric shovel 210, the first group of supports 141, the second group of supports 142, and the third group of supports 143 are arranged at intervals along the expected working direction of the electric shovel 210. Assuming that the current working positions of the electric shovel 210 are the first working position, the second working position, and the third working position, the first group of supports 141 is adapted to the first working position, the second group of supports 142 is adapted to the second working position, and the third group of supports 143 is adapted to the third working position.

[0113] During the operation of the electric shovel 210, when the electric shovel 210 is working in the first working position, the electric shovel 210 can be powered on through the first power supply line 120 and the first set of supports 141. At this time, the second power supply line 130 and the second set of supports 142 have been set up and entered the preparation state.

[0114] When the electric shovel 210 completes its work at the first working position and needs to move to the second working position, it can be powered by the second power supply line 130 and the second set of supports 142. During the operation of the electric shovel 210 at the second working position (understandably, the electric shovel 210 requires less manpower and auxiliary equipment during operation), the first set of supports 141 can be moved. The first power supply line 120 (dashed line in Figure 7) represents the moved first power supply line 120, bringing the first set of supports 141 closer to the second working position. The second set of brackets 142 is then adjusted, followed by the adjustment of the hinge rod 146 of the first set of brackets 141 to lift the first power supply line 120. Then, the hinge rod 146 of the third set of brackets 143 is adjusted so that the hinge rod 146 of the third set of brackets 143 supports the first power supply line 120. Finally, the first set of brackets 141 is moved by the loader so that the first set of brackets 141 is in the fourth working position of the electric shovel 210. The first power supply line 120 can then be combined with the third set of brackets 143 to wait for the electric shovel 210 to move and provide power to the electric shovel 210. Based on this, the electric shovel 210 can be powered alternately by the first power supply line 120 and the second power supply line 130. The movement of the power supply line and the support 140 can be alternated with the movement of the electric shovel 210. For example, if the working time of the electric shovel 210 at a work point may reach 5 hours, the first power supply line 120 or the second power supply line 130 can be moved during the 5 hours of operation. After the electric shovel 210 completes the work at the current work point, all manpower can be devoted to moving the electric shovel 210. This setting can improve the working efficiency of the operators and the equipment, reduce costs, and reduce the failure rate.

[0115] As shown in Figures 1 and 7, in some examples, the steps for determining multiple work locations based on the working direction and working radius of the electric shovel 210 include:

[0116] Obtain the working radius and working area of ​​the electric shovel 210;

[0117] The working position arrangement direction of the electric shovel 210 is determined based on the extension direction of the work area.

[0118] Three sets of supports 140 are arranged at intervals in the working position of the electric shovel 210.

[0119] Among them, the ratio of the distance between two adjacent sets of supports 140 to the working radius is less than or equal to 2.

[0120] The technical solution further provides specific steps for arranging three sets of supports 140. Three sets of supports 140 are arranged at intervals in the working position direction of the electric shovel 210. This arrangement allows the electric shovel 210 to be powered on quickly through the three sets of supports 140.

[0121] In this technical solution, the ratio of the distance between two adjacent sets of supports 140 to the working radius is less than or equal to 2. This arrangement allows the arrangement of the supports 140 to be adapted to the working radius of the electric shovel 210, facilitating a stable power supply to the electric shovel 210.

[0122] In some examples, during the mining process of the electric shovel 210, the step of moving the first set of supports 141 so that the first set of supports 141 is located on the side of the third set of supports 143 away from the second set of supports 142, and setting the first power supply line 120 on the third set of supports 143 includes:

[0123] During the mining process, the electric shovel 210 pushes the first set of supports 141 so that the first set of supports 141 is close to the second set of supports 142.

[0124] Adjust the hinge rod 146 of the first bracket 141 to lift the first power supply line 120 so that the first power supply line 120 crosses the second power supply line 130;

[0125] Adjust the hinge rod 146 of the third bracket 143 so that the hinge rod 146 of the third bracket 143 is close to the second bracket 142, and the first power supply line 120 is received through the third bracket 143.

[0126] The first set of supports 141 is pushed again by the forklift so that the first set of supports 141 is located on the side of the third set of supports 143 away from the second set of supports 142.

[0127] As shown in Figures 1 to 5, this technical solution further provides a specific method for moving the first power supply line 120 and the first set of supports 141. First, the first set of supports 141 is moved to the vicinity of the second set of supports 142. Then, by adjusting the hinge rods 146 on the first set of supports 141 and the third set of supports 143, the first power supply line 120 is transferred from the first set of supports 141 to the third set of supports 143. Finally, the first set of supports 141 is moved again. This facilitates rapid scheduling and can further improve construction efficiency.

[0128] In this invention, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance; the term "multiple" refers to two or more unless otherwise explicitly defined. The terms "install," "connect," "link," and "fix" should be interpreted broadly. For example, "connect" can be a fixed connection, a detachable connection, or an integral connection; "link" can be a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0129] In the description of this invention, it should be understood that the terms "upper," "lower," "left," "right," "front," "rear," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or unit referred to must have a specific orientation or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0130] In the description of this specification, the terms "one embodiment," "some embodiments," "specific embodiment," 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 the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0131] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A power supply system for an electric shovel used in open-pit mining, characterized in that, include: A power supply box, the input end of which is used to connect to an external power source; a first power supply line and a second power supply line, the first power supply line and the second power supply line are connected to the output end of the power supply box. When the electric shovel is working in the first working position, power is supplied to the electric shovel through the first power supply line. When the electric shovel is working in the second working position, power is supplied to the electric shovel through the second power supply line. Multiple brackets, the multiple brackets are divided into multiple groups, each group includes two brackets, and the two brackets are arranged adjacent to each other to form a vehicle passage space between the two adjacent brackets, and each group of brackets supports a first power supply line or a second power supply line. A forklift is used to move the support frame; wherein the support frame includes: a base; a vertical rod connected to the base; a hinged rod hinged to the vertical rod; a first drive assembly connected to the hinged rod for rotating the hinged rod; a support member and a second drive assembly, the support member being disposed at the end of the hinged rod away from the base, the second drive assembly being connected to the support member for controlling the setting angle of the support member, the support member being used to support a power supply line; wherein... The vertical rod includes: a rod body connected to the base; two side plates connected to the rod body and spaced apart; and a hinge shaft passing through the side plates and the vertical rod to hinge the hinge rod to the vertical rod. The base includes: a seat; casters connected to the seat; and mounting holes formed on the seat for inserting the shovel teeth of a loader, or for inserting a connecting rod connected to the loader; and / or the seat is made of concrete.

2. An open-pit mining system, characterized in that, include: The power supply system for an electric shovel in open-pit mining as described in claim 1; an electric shovel and two transport vehicles, wherein the power supply system for the electric shovel is used to supply power to the electric shovel, and the transport vehicles are arranged on both sides of the electric shovel to alternately transport ore; wherein the transport vehicles travel through the passage space between two adjacent supports of the open-pit mining system to avoid the first power supply line and the second power supply line.

3. A power supply control method for an electric shovel, characterized in that, Applied to the open-pit mining system as described in claim 2, the electric shovel power supply control method includes: determining multiple working positions based on the working direction and working radius of the electric shovel; powering the electric shovel through the first power supply line during the operation of the electric shovel at the first working position; and powering the electric shovel through the second power supply line when the electric shovel moves to the second working position.

4. The electric shovel power supply control method according to claim 3, characterized in that, The power supply system for the electric shovel in the open-pit mine includes six supports, which are divided into three groups: the first group of supports, the second group of supports, and the third group of supports. During the operation of the electric shovel at the first working position, the step of powering the electric shovel through the first power supply line includes: when the electric shovel is operating at the first working position, powering the electric shovel through the first power supply line, and the position of the second set of supports is adapted to the second working position of the electric shovel, with the second power supply line set on the second set of supports; the step of powering the electric shovel through the second power supply line when the electric shovel moves to the second working position includes: when the electric shovel has completed mining at the first working position and moves to the second working position, powering the electric shovel through the second power supply line.

5. The electric shovel power supply control method according to claim 4, characterized in that, Also includes: During the mining process at the second working position of the electric shovel, the first set of supports is moved so that the first set of supports is located on the side of the third set of supports away from the second set of supports, and the first power supply line is set on the third set of supports. When the electric shovel completes mining at the second working position and moves to the third working position, it is powered by the first power supply line.

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