An engineering power supply device

Abstract

The present invention provides an engineering power supply device, comprising a first cable retracting device, a power output device and a navigation mechanism of a cable line, wherein the input end of the cable line is connected to a second cable retracting device of a power warehouse carrying a power supply unit, and the engineering power supply device moves toward an execution warehouse by means of a navigation mechanism, and when approaching the execution warehouse, the power output device transmits electric energy to a charging device of the execution warehouse. The engineering power supply device of the present invention can transmit the electric energy of the power warehouse to the execution warehouse in the operation area, so as to ensure the continuous operation of the execution warehouse.

Description

Technical Field

[0001] The invention belongs to the technical field of engineering equipment and relates to an engineering power supply device. Background Art

[0002] Most construction machinery operates in harsh environments. These environments are noisy, polluted, and even toxic and harmful, which will damage the personal safety and physical and mental health of operators. Therefore, it is difficult for operators to directly operate the machinery. In order to better realize the application of construction machinery in such environments, people have carried out research on remote control of construction machinery.

[0003] At present, the control mode of many machines has developed from traditional on-site control to a combination of on-site control and remote control. The operator's working position and the machine's operating position can be set in two different places, which not only ensures the operator's personal safety, but also improves labor productivity and saves production costs.

[0004] However, most of the current remote-controlled construction machinery is still powered by diesel engines, mainly because it is difficult for these construction machinery to carry enough batteries to maintain long-term operation. However, in some closed scenes, such as cabins, factories, tunnels, coal mines, etc., it is difficult to use engines, so it is hoped that electric construction machinery can be used.

[0005] Although people prefer construction machinery to have its own batteries and to perform prescribed tasks through remote control. This type of construction machinery is feasible in operations with light workloads and short working hours. However, it is difficult to successfully complete construction work in tasks that require long time and heavy loads. The reason is that the battery power is insufficient. If the construction work is to be completed normally, a large battery is required, but the weight of these batteries themselves will become a huge burden on the robot, thus affecting the construction work. In addition, after the battery is exhausted, the entire robot needs to be driven out of the danger zone before it can be charged. However, if the power is exhausted during the movement or the execution of the work, it will be difficult for the robot to drive out of the work area to charge. Summary of the invention

[0006] In view of the above-mentioned shortcomings of the prior art, an object of the present invention is to provide an engineering power supply device for solving the problem in the prior art that the operation of the engineering robot is affected by insufficient battery supply.

[0007] To achieve the above-mentioned and other related purposes, the present invention provides an engineering power supply device, comprising:

[0008] A first cable retracting device is wound with a cable, and an input end of the cable is connected to a second cable retracting device of a power compartment carrying a power supply;

[0009] A power output device connected to the output end of the cable, the power output device transmits power to the charging device of the execution chamber;

[0010] The navigation mechanism carries the first cable retracting device and the power output device to move.

[0011] In one embodiment of the present invention, a distance memory device is also installed on the engineering power supply device for recording the driving path of the engineering power supply device. The distance memory device is electrically connected to the first cable retracting device and the navigation mechanism, respectively, and is used for the engineering power supply device to return along the original path when returning, and to control the first cable retracting device to retract the cable line.

[0012] In one embodiment of the present invention, a cable tension detection device is also installed on the engineering power supply device, and the tension detection device is arranged close to the cable release end of the first cable retracting device.

[0013] In one embodiment of the present invention, the tension detection device is electrically connected to the first cable retracting device, and the tension detection device is also wirelessly connected to the second cable retracting device. A first tension value F1 and a second tension value F2 are preset in the tension detection device, and a monitoring value of the tension detection device is set to f;

[0014] When the engineering power supply device moves away from the power bin, when F1≦f<F2, the second cable retracting device is controlled to release the cable, and when f≧F2, the first cable retracting device is controlled to release the cable accordingly; when charging is completed, the engineering power supply device moves toward the power bin, when f≦F1, the first cable retracting device and / or the second cable retracting device are controlled to retract the cable.

[0015] In one embodiment of the present invention, the first cable retracting device includes a motor, a first rotating shaft and a drum sleeved on the first rotating shaft, the cable is wound on the outer wall of the drum, and the output shaft of the motor is connected to one end of the first rotating shaft through a coupling.

[0016] In one embodiment of the present invention, the navigation mechanism is a crawler-type walking mechanism, a walking robot or a flying mechanism.

[0017] In one embodiment of the present invention, a telescopic arm is installed on the crawler-type walking mechanism, and the first cable retracting device and the power output device are installed on the top of the telescopic arm.

[0018] In one embodiment of the present invention, a plurality of connection devices are connected in series on a cable between an engineering power supply device and a power bin, and the connection devices serve as branch points and can be connected to other engineering power supply devices.

[0019] In one embodiment of the present invention, the charging device and the power output device constitute an inductive power connection device.

[0020] In one embodiment of the present invention, the power output device of one of the engineering power supply devices is connected in series with another engineering power supply device by using a connector.

[0021] As described above, the engineering power supply device of the present invention can transmit the electrical energy of the power compartment to the execution compartment in the working area.

[0022] Compared with the transmission power supply vehicle, the split design is adopted. Since the cables are mainly released from the power compartment, the engineering power supply device carries a small amount of cables, making the engineering power supply device lighter. In addition, the engineering power supply device can be remotely controlled by the power compartment, and there is no need for personnel to drive into dangerous areas, protecting personnel safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 Shown is a schematic diagram of the connection between the engineering power supply device of the present invention and the power compartment and the execution compartment in one embodiment.

[0024] Figure 2 It shows a schematic diagram of the structure of the tension detection device installed in the engineering power supply device of the present invention.

[0025] Figure 3 Shown is a three-dimensional schematic diagram of the tension detection device of the present invention.

[0026] Figure 4 It is a cross-sectional schematic diagram of the tension detection device of the present invention.

[0027] Figure 5 Shown is a schematic diagram of the connection of the navigation mechanism of the present invention to a walking robot.

[0028] Figure 6 It is a schematic diagram showing the connection between the navigation mechanism of the present invention and the flight mechanism.

[0029] Figure 7 It shows a connection diagram of the engineering power supply device of the present invention when it is connected in series.

[0030] Figure 8 It is a schematic structural diagram of the inductive power connection device of the present invention.

[0031] Fig. 9 Shown is a schematic structural diagram of a cable series connection device of the present invention. DETAILED DESCRIPTION

[0032] The following is a description of the implementation of the present invention by means of specific embodiments. Those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification.

[0033] It should be noted that the structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the limiting conditions for the implementation of the present invention, so they have no substantial technical significance. Any modification of the structure, change of the proportion relationship or adjustment of the size should still fall within the scope of the technical content disclosed by the present invention without affecting the effects and purposes that can be achieved by the present invention. At the same time, the terms such as "upper", "lower", "left", "right", "middle" and "one" quoted in this specification are only for the convenience of description, and are not used to limit the scope of the implementation of the present invention. The change or adjustment of their relative relationship should also be regarded as the scope of the implementation of the present invention without substantially changing the technical content.

[0034] Electric engineering robots require a large amount of power. If they are powered directly by a power supply vehicle with a power supply, a large number of batteries or power generation devices need to be installed on the power supply vehicle, which makes the power supply vehicle larger in size and weight. Especially in situations where natural disasters are severe and it is not suitable for people to enter, a large power supply vehicle is not suitable. Therefore, there is an urgent need for a small and lightweight power supply vehicle.

[0035] See also Figures 1 to 9 The present invention provides an engineering power supply device, wherein the engineering power supply device 2 is used to charge an engineering robot (hereinafter referred to as an execution warehouse), and the engineering power supply device 2 includes a navigation mechanism 23, a first cable retracting device 21, and a power output device 22, wherein the first cable retracting device 21 and the circuit output device are respectively fixed to the navigation mechanism 23, a retractable cable is wound on the first cable retracting device 21, the input end of the cable is connected to the power warehouse 1 carrying a power supply unit 12 externally, and the output end of the cable is electrically connected to the power output device 22, and accordingly, a charging device 31 opposite to the output device is provided on the execution warehouse 3. In the present invention, the power warehouse 1 can remotely control the navigation mechanism 23 to move to the execution warehouse 3 to be powered, and when the engineering power supply device 2 is at a preset distance from the execution warehouse 3, the power warehouse 1 transmits the electric energy in the power supply unit 12 to the charging device 31 of the execution warehouse 3 via the cable and the circuit output device to realize the charging action. In addition, the engineering power supply device 2 can be installed with a power supply for providing electric energy to the navigation mechanism 23. Of course, the power supply can also be provided directly from the power compartment 1 using cables.

[0036] The power transmission of construction machinery adopts strong power transmission. The cable used is, for example, BVR type 450 / 750V copper core PVC insulated cable with a cross section of 2.5mm 2 , the weight of the cable needs to reach 32kg within one kilometer, so the weight of the cable used in engineering machinery is relatively large, especially when the execution warehouse 3 to be charged is more than half a kilometer away from the power warehouse 1. As the engineering power supply device 2 approaches the execution warehouse 3 as the cable is laid, the overall weight of the cable between the engineering power supply device 2 and the power warehouse 1 continues to increase. If all the cables are directly placed in the engineering power supply device 2, the weight of the engineering power supply device 2 will inevitably be greatly increased. In order to achieve lightweight, in the present invention, Figure 1 , Figure 2 and Figures 5 to 9 A second cable retracting device 13 is also provided on the power warehouse 1. The cables are mainly wound on the cable retracting device of the power warehouse 1. A small amount of cables are wound on the first cable retracting device 21. At the same time, a cable tension detection device 27 can be installed on the engineering power supply device 2. The tension detection device 27 is arranged near the cable release end of the first cable retracting device 21. The tension detection device 27 is used to detect the stress state of the cable between the power warehouse 1 and the engineering power supply device 2.

[0037] In this embodiment, when the engineering power supply device 2 and the power bin 1 are on the same horizontal ground at the same time, the height of the second cable retracting device 13 from the horizontal ground is less than the height of the first cable retracting device 21 from the horizontal ground. Therefore, when the engineering power supply device 2 and the power bin 1 are on the same horizontal ground at the same time, if the cable is under tension, the cable between the engineering power supply device 2 and the power bin 1 is set at an angle to the engineering power supply device 2 and the power bin 1. Among them, the first cable retracting device 21 and the second cable retracting device 13 can adopt the same structural setting, and the first cable retracting device 21 is taken as an example for explanation. Figure 2 As shown, the first cable retracting device 21 may include a motor, a first rotating shaft and a reel sleeved on the first rotating shaft, the cable is wound on the outer wall of the reel, the output shaft of the motor is connected to one end of the first rotating shaft through a coupling, and a mounting column 26 may be provided at the other end of the first rotating shaft, the bottom of the mounting column 26 is fixed to the navigation mechanism 23 of the engineering power supply device 2. The first cable retracting device 21 can drive the reel to rotate clockwise or counterclockwise by controlling the first rotating shaft of the motor. In the present invention, it can be set that the first rotating shaft rotates clockwise to recycle the cable, and counterclockwise to release the cable.

[0038] The tension detection device 27 is described in detail below:

[0039] See also Figure 2 to Figure 4A fixing plate 25 is horizontally installed at the bottom of the first cable retracting device 21, and the fixing plate 25 is fixed to the navigation mechanism 23. The tension detection device 27 is fixed on the fixing plate 25. The tension detection device 27 is arranged horizontally. The tension detection device 27 is sleeved on the cable and is arranged near the cable release end of the first cable retracting device 21. Figure 4 As shown, the tension detection device 27 includes a mounting seat 271, and the mounting seat 271 can be vertically fixed to the fixing plate 25 by fasteners such as bolts and screws. A through hole 277 for the cable to pass through is provided on the mounting seat 271, and correspondingly, a through hole ( Figure 2 (not shown), the cable of the second cable retracting device 13 is connected to the first cable retracting device through the through hole and the through hole 277. In this embodiment, two groups of grooves 272 for accommodating rollers 275 are arranged in an array on the hole wall with the axis of the through hole 277 as the center line. When the cable passes through the through hole 277, the rollers 275 arranged on the hole wall support the cable, and the cable and the rollers 275 are in rolling contact so that the cable and the tension detection device 27 do not generate friction.

[0040] Furthermore, an elastic member 273 and a fixed seat 274 are respectively provided in each groove 272, wherein a chamber for placing a roller 275 is opened on the fixed seat 274, and the roller 275 is axially penetrated by a second rotating shaft and its two axial ends are respectively connected to the fixed seat 274, and the fixed seat 274 is connected to the side wall of the chamber by the elastic member 273. After the cable passes through the through hole 277, the cable drives the roller 275 to rotate on the second rotating shaft during the process of recovery and / or release. At this time, under the action of the elastic member 273, when replacing cables of different diameters, the roller 275 is always in close contact with the outside of the cable, ensuring that the cable is always at a relatively stable angle when entering the first cable retracting device 21 or being released from the cable retracting device to avoid entanglement.

[0041] like Figure 4 As shown, the tension detection device 27 also includes a pressure sensing device, and the pressure sensing device also includes a pressure sensor 276 installed on each elastic member 273 and a processor electrically connected to each pressure sensor 276 ( Figure 4 (not shown), the processor is electrically connected to the motor of the first cable retracting device 21, and the processor can also use a wireless device to wirelessly transmit with the second cable retracting device 13 through a mobile signal network, and use the pressure sensor 276 to detect the pressure value of the elastic member 273.

[0042] The tension detection device 27 is placed in the engineering power supply device 2. After the cable passes through, the rollers of the tension detection device surround the side of the cable. During the laying process, the side of the cable is pressed against the roller 275. The first tension value F1 and the second tension value F2 are preset in the processor, F1<F2, and the processor receives the pressure data collected by the four pressure sensors 276, among which the data with the largest pressure value is selected as the monitoring value, and the monitoring value is set to f.

[0043] When the cable is being laid, if the cable is not pulled, the portion of the cable between the engineering power supply device 2 and the power warehouse 1 will be placed on the ground. At this time, the cable leaves the ground two to three meters away from the engineering power supply device 2 and is connected to the first cable retracting device 21 of the engineering power supply device 2, that is, the angle between the cable and the first cable retracting device 21 is within the first angle range, and the monitoring value f obtained by the processor is less than F1. When the engineering power supply device 2 is moving toward the execution warehouse, if the monitoring value f obtained by the processor is less than F1, the tension detection device 27 can transmit a cable recovery signal to the first cable retracting device 21 and / or the second cable retracting device 13, and the first cable retracting device 21 and / or the second cable retracting device 13 perform cable recovery.

[0044] If the cable is pulled, the distance between the engineering power supply device 2 and the nearest cable placed on the ground increases. At this time, the cable located in the tension detection device 27 moves a certain distance away from the direction of gravity of the cable under the action of tension, that is, the angle between the cable and the first cable retracting device 21 exceeds the maximum value of the first angle range. At this time, F1≦f<F2. At this time, the tension detection device controls the second cable retracting device 13 to release the cable. If the tension on the cable continues to increase at this time, when f≧F2, on the basis of the second cable retracting device 13 releasing the cable, the tension detection device 27 controls the first cable retracting device 21 to release the cable accordingly, thereby reducing the force on the cable.

[0045] During the execution of the operation, by controlling the length of the cable to be retracted by the first cable retracting device 21 or the second cable retracting device 13, the engineering power supply device 2 moves toward the execution warehouse 3 and supplies power to it, so that the execution warehouse 3 has a continuous power support to ensure the normal operation of the execution warehouse 3. Even if the execution warehouse 3 runs out of power during work, it can be charged outside the danger range.

[0046] In this embodiment, if Figure 1 , Figure 5 and Figure 6, the navigation mechanism 23 can be a crawler walking mechanism, a walking robot or a flying mechanism. The navigation mechanism 23 performs remote signal transmission with the power warehouse 1, and the driver in the power warehouse 1 remotely controls the movement toward the required execution warehouse 3. When the power supply vehicle approaches the execution warehouse 3, the power output device 22 is aligned with the charging device 31 for power transmission. It should be noted that when the navigation mechanism 23 adopts a crawler walking mechanism, a telescopic arm 24 can be installed on the navigation mechanism 23, and the first cable retracting device 21 and the power output device 22 are installed on the top of the telescopic arm 24. The telescopic arm 24 can adopt, for example, a multi-joint mechanical arm, which can adjust the position of the power output device 22 to ensure docking with the charging device 31 of the execution warehouse 3. When a walking robot is used as the navigation mechanism 23, the joint angle of the walking robot can be adjusted to adjust the position of the power output device 22. In the working area where the road conditions are not suitable for driving, the navigation mechanism 23 can adopt a flying mechanism such as a drone, which can carry the first cable retracting device 21 and the power output device 22 through the remote control of the flying mechanism, and ensure docking with the charging device 31 of the execution warehouse 3 by controlling the height of the flying mechanism.

[0047] like Figure 1 , Figures 5 to 8In the power compartment 1, a cab 11 with a driver and a power supply device for supplying power to the execution compartment 3 may be provided. In the cab 11, an operating table, a display and a controller for controlling the action of the engineering power supply device 2 are provided. The operating table is provided with a plurality of corresponding operating levers for controlling the forward, backward and rotation actions of the engineering power supply device 2. The controller is electrically connected to the display and the operating table respectively. A first wireless transmission device connected to the controller is also provided in the power compartment 1, such as a radio frequency transceiver nRF2401. Correspondingly, a second wireless transmission device may also be installed on the engineering power supply device 2. A collection device is installed on the engineering power supply device 2, which includes an image collector, an audio collector, and a positioning tracker. Various sensors for diagnosing the working status of various mechanical components of the engineering power supply device 2 can also be installed. The collection device and the sensor are respectively connected to the second wireless transmission device, and the second wireless transmission device can be electrically connected to the navigation mechanism 23. The second wireless transmission device transmits various types of information collected to the first wireless transmission device, and the first wireless transmission device presents the received information on the display for the driver to view. The driver can grasp the image and sound information, mechanical damage information and location information on this display interface in a timely manner, and can remotely control the execution warehouse 3 to complete the operation task through data analysis and problem diagnosis. At the same time, the controller in the power warehouse 1 converts the operation of each operating lever on the operating workbench into an electrical signal and transmits it to the second wireless transmission device through the first wireless transmission device. The navigation mechanism 23 controls the corresponding mechanical component according to the data signal received by the second wireless transmission device. Remotely controlling the action of the engineering power supply device 2 can allow the driver to work outside the dangerous range and ensure the safety of the operator.

[0048] In this embodiment, in actual use, if Fig. 9As shown, a power warehouse 1 can control multiple engineering power supply devices 2 at the same time, and correspondingly supply power to multiple execution warehouses 3. Several connecting devices 4 can be connected in series on the cable between an engineering power supply device 2 and a power warehouse 1. The connecting device 4 can be connected to other engineering power supply devices 2 as a branch point, wherein the input end of the cable line of the first cable retracting device 21 of the engineering power supply device 2 is connected to the output end of the second cable retracting device 13 through a connecting device 4. The connecting device 4 may include a shell and a conductive row, the conductive row is placed in the shell, and the conductive row is provided with multiple conductive fulcrums. At the same time, a socket is provided on the shell corresponding to each conductive fulcrum. The conductive row is connected to the second cable retracting device 13 of the power warehouse 1 by a cable line. Correspondingly, a cable plug is installed at the input end of the cable line of the first cable retracting device 21, and the cable plug is inserted into the socket. At this time, the power warehouse 1 can use the connecting device 4 to supply power to multiple execution warehouses 3. The reliability of the execution warehouse 3 at each position is ensured, and the entire construction system becomes very simple, reliable, efficient and low-cost.

[0049] At the same time, a second wireless transmission device is installed on each engineering power supply device 2, and a corresponding number can be set for each second wireless device. When the second wireless device carries its own number when transmitting data to the first wireless transmission device, the first wireless device can display the number of the received data in the corresponding display area of ​​the display.

[0050] In this embodiment, the power output device 22 of the engineering power supply device 2 and the charging device 31 of the execution warehouse 3 adopt an inductive energy transmission method, such as Figure 8 As shown, the charging device 31 and the power output device 22 constitute an inductive power connection device. The power output device 22 includes a housing, a power supply end magnetic core 222 placed in the housing, and a power supply end induction coil 221 wound around the power supply end magnetic core 222. The power supply end induction coil 221 is configured with a first capacitor, and the power supply end cable is electrically connected to the first cable retracting device 21; the charging device 31 includes a charging end magnetic core 312 and a charging end induction coil 311 wound around the charging end magnetic core 312. The charging end induction coil 311 is configured with a second capacitor. The charging end induction coil 311 is electrically connected to the power supply of the execution chamber 3 itself, and the capacitor and the coil form a resonant circuit to realize inductive power transmission. In order to improve the efficiency of electromagnetic induction, a magnetic conductive material can be provided between the induction coils. The electromagnetic induction devices at the power supply end and the charging end are wrapped with waterproof and dustproof materials. In addition, a pressing device can be installed on the connection chamber to press the electromagnetic induction device at the power supply end onto the induction device at the power receiving end, so that the two remain tightly connected. Because the execution compartment 3 does not need a large number of batteries, it is light in weight and consumes little power, so it can use inductive power transmission. The inductive power transmission method can avoid the exposure of the power plug to the air, and achieve complete waterproof and dustproof functions.

[0051] In addition, during the cable laying process, when the length of the cable between the power warehouse 1 and the engineering power supply device 2 is less than the distance between the power warehouse 1 and the execution warehouse 3, multiple engineering power supply devices 2 can be connected in series, such as Figure 7 As shown, specifically: the power output device 22 of an engineering power supply device 2 is connected to the cable input end of an adjacent engineering power supply device 2 by a connector, wherein the connector includes a protective shell, and an induction device and a battery placed in the protective shell, the input end of the battery is connected to the induction device, and the output end of the battery is connected to the input end of the cable in the adjacent engineering power supply device 2. A threaded hole can be opened on the protective shell, and correspondingly, a thread is opened on the outer shell of the power output device 22, and the protective shell and the outer shell are threadedly connected, and of course, the two are fixedly connected by fasteners such as bolts, so as to realize the series connection between the engineering power supply devices 2. The extension of the cable enables the execution warehouse 3 to work in a farther place, expanding the working range and working performance of the robot.

[0052] In this embodiment, the engineering power supply device 2 may also be provided with a set of distance memory devices, the distance memory device is provided with a memory, the input end of the memory is connected to the positioning tracker, and the output end of the memory is connected to the navigation mechanism 23. When the engineering power supply device 2 is moving toward the execution warehouse 3, the memory can use the positioning tracker to record the driving path of the engineering power supply device 2 through the global positioning system, and the distance memory device is electrically connected to the first cable retracting device 21 and the navigation mechanism 23 respectively. When the engineering power supply device 2 completes the power supply to the execution warehouse 3, the distance memory device controls the navigation mechanism 23 to return to the original path according to the form path recorded in the memory. During the return process, the tension detection device 27 still collects the data of each pressure sensor 276 in real time. At this time, when the engineering power supply device 2 moves toward the power warehouse 1 after charging is completed, when f≦F1, the tension detection device 27 controls the first cable retracting device 21 and / or the second cable retracting device 13 to retract the cable line.

[0053] Compared with the transmission power supply vehicle, the engineering power supply device 2 of the present invention adopts a split design. Since the cables are mainly released from the power compartment 1, the engineering power supply device 2 carries a small amount of cables, making the engineering power supply device 2 lighter. In addition, the engineering power supply device 2 can be remotely controlled by the power compartment 1, and there is no need for personnel to drive into dangerous areas, thereby protecting personnel safety.

[0054] In summary, the present invention effectively overcomes various shortcomings of the prior art and has high industrial utilization value.

[0055] The above embodiments are merely illustrative of the principles and effects of the present invention, and are not intended to limit the present invention. Anyone familiar with the art may modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by a person of ordinary skill in the art without departing from the spirit and technical concept disclosed by the present invention shall still be covered by the claims of the present invention.

Claims

1. An engineering power supply device, characterized in that: include: A first cable retracting device is wound with a cable, and an input end of the cable is connected to a second cable retracting device of a power compartment carrying a power supply unit; A power output device connected to the output end of the cable, the power output device transmits power to the charging device of the execution chamber; The navigation mechanism carries the first cable retracting device and the power output device to move, and the power compartment can remotely control the navigation mechanism to move to the execution compartment that needs power supply; A cable tension detection device is also installed on the engineering power supply device, and the tension detection device is arranged near the cable release end of the first cable retracting device; The tension detection device is electrically connected to the first cable retracting device, and is also wirelessly connected to the second cable retracting device. A first tension value F1 and a second tension value F2 are preset in the tension detection device, and a monitoring value of the tension detection device is set to f; When the engineering power supply device moves away from the power bin, when F1≤f<F2, the second cable retracting device is controlled to release the cable line, and when f≥F2, on the basis of the second cable retracting device releasing the cable line, the first cable retracting device is controlled to release the cable line accordingly; when the engineering power supply device moves toward the power bin after charging is completed, when f<F1, the first cable retracting device and / or the second cable retracting device are controlled to retract the cable line; A distance memory device is also installed on the engineering power supply device for recording the driving path of the engineering power supply device. The distance memory device is electrically connected to the first cable retracting device and the navigation mechanism respectively, and is used for the engineering power supply device to return along the original driving path when returning, and to control the first cable retracting device to retract the cable.

2. The engineering power supply device according to claim 1, characterized in that: The first cable retracting device comprises a motor, a first rotating shaft and a reel sleeved on the first rotating shaft, the cable is wound around the outer wall of the reel, and the output shaft of the motor is connected to one end of the first rotating shaft through a coupling.

3. The engineering power supply device according to claim 1, characterized in that: The navigation mechanism is a crawler-type walking mechanism, a walking robot or a flying mechanism.

4. The engineering power supply device according to claim 3, characterized in that: A telescopic arm is installed on the crawler-type walking mechanism, and the first cable retracting device and the power output device are installed on the top of the telescopic arm.

5. The engineering power supply device according to claim 1, characterized in that: A plurality of connection devices are connected in series on the cable between one of the engineering power supply devices and one of the power bins, and the connection devices can be connected to other engineering power supply devices as branch points.

6. The engineering power supply device according to claim 1, characterized in that: The charging device and the power output device constitute an inductive power connection device.

7. The engineering power supply device according to claim 1, characterized in that: The power output device of one engineering power supply device is connected in series with another engineering power supply device by a connecting piece.

Images