Refueling device

Abstract

The utility model discloses a refueling device, and relates to the technical field of refueling equipment, the refueling device comprises a base, an oil storage tank, a controller, an oil pump and a mutual inductor, the oil storage tank and the controller are both arranged on the base, the oil pump is arranged in the oil storage tank and used for pumping lubricating oil, and a first oil injection port and a second oil injection port are both communicated with the oil pump; the mutual inductor is detachably sleeved on the conductive wire; the mutual inductor, the oil pump and the storage battery are in electric signal connection with the controller; the controller can receive and measure the current transmitted by the mutual inductor in real time, obtain measurement data and control the oil pump to operate when the measurement data is smaller than a preset value, and the oil pump pumps lubricating oil in the oil storage tank to the first oil injection port and the second oil injection port through the oil distributor. According to the technical scheme provided by the utility model, the technical problem of high maintenance cost of fan equipment can be solved.

Description

Technical Field

[0001] This utility model relates to the field of refueling equipment technology, and in particular to a refueling device. Background Technology

[0002] In the automotive painting process, exhaust systems are widely used to ventilate spray booths, drying ovens, and workshops; these systems are primarily powered by fans. However, these fans require regular lubrication and other maintenance, which necessitates repeated start-ups and shutdowns, increasing production costs.

[0003] Therefore, it is necessary to provide a new refueling device to solve the above-mentioned technical problems. Utility Model Content

[0004] The main purpose of this utility model is to provide a refueling device, which aims to solve the technical problem of high production costs caused by the need to shut down the fan equipment during maintenance.

[0005] To achieve the above objectives, this utility model proposes a refueling device applied to a fan equipment. The fan equipment includes a fan body, a motor body, and a power supply. The fan body is provided with a first oil inlet, and the motor body is provided with a second oil inlet. A conductive wire is provided between the power supply and the motor body. The refueling device includes a base, an oil tank, a controller, an oil pump, and a current transformer. The oil tank and the controller are both located on the base. The oil pump is located in the oil tank and is used to pump lubricating oil. The first and second oil inlets are both connected to the oil pump. The current transformer is detachably sleeved on the conductive wire.

[0006] Both the current transformer and the oil pump are electrically connected to the controller; the controller can receive and measure the current transmitted by the current transformer in real time and obtain measurement data; when the measurement data is less than a preset value, the controller controls the oil pump to run, and the oil pump can pump the lubricating oil in the oil tank to the first oil inlet and the second oil inlet.

[0007] In one embodiment, the current transformer includes a first fastening member and a second fastening member; one side of the first fastening member is rotatably connected to one side of the second fastening member, and the other side of the first fastening member is engaged with the other side of the second fastening member.

[0008] The current transformer includes a locked state and an open state;

[0009] When the current transformer is in the engaged state, the other side of the first fastening member engages with the other side of the second fastening member, and the first fastening member and the second fastening member abut against each other and form a through hole for the conductive wire to pass through; when the current transformer is in the open state, the other side of the first fastening member separates from the other side of the second fastening member, and the first fastening member and the second fastening member are set at an angle.

[0010] In one embodiment, the first fastening member includes a first housing and a first conductive block. The first housing has a first groove, and the first conductive block is disposed on the first housing and extends circumferentially along the first groove.

[0011] The second fastening member includes a second housing, a second conductive block, and a wire. The second housing has a second groove. The second conductive block is disposed in the second housing and extends circumferentially along the second groove. The wire is wound around the second conductive block, and both ends of the wire are connected to the controller.

[0012] When the current transformer is in the engaged state, the first groove and the second groove form the through hole, and the two ends of the first conductive block abut against the two ends of the second conductive block respectively; when the current transformer is in the open state, the first fastening member and the second fastening member are set at an angle, and the first conductive block and the second conductive block are separated.

[0013] In one embodiment, the first housing has a first end face facing the second housing, and the second housing has a second end face facing the first housing; both ends of the first conductive block extend out of the first end face;

[0014] And / or, both ends of the second conductive block extend out of the second end face.

[0015] In one embodiment, the first fastening member is provided with a protrusion, and the second fastening member is provided with an extension block, the extension block being provided with a snap-fit ​​hole;

[0016] When the current transformer is in the engaged state, the protrusion engages with the snap-fit ​​hole.

[0017] In one embodiment, the refueling device further includes a support frame, a receiving box, and a battery. The support frame is disposed on the base and spaced apart from the oil tank, and the receiving box is disposed on the support frame. The support frame has a storage space, and the controller and the battery are both disposed in the receiving box.

[0018] In one embodiment, hooks are provided on both sides of the support frame, and each hook includes a mounting rod, an arc-shaped rod and a limiting rod connected in sequence. Each mounting rod is disposed on the support frame, and the limiting rod is arranged parallel to the mounting rod.

[0019] In one embodiment, the refueling device further includes a plurality of rollers, which are evenly arranged on the lower end face of the base.

[0020] In one embodiment, the base is provided with two uprights, and a gripping rod is provided between the ends of the two uprights that are away from the base.

[0021] In one embodiment, the refueling device further includes a distributor, which is connected to the oil pump and is provided with a first oil delivery pipe and a second oil delivery pipe. The first oil delivery pipe is detachably disposed at the first oil inlet, and the second oil delivery pipe is detachably disposed at the second oil inlet.

[0022] In this invention, by detachably mounting a current transformer on the conductive wire, detachably mounting a first oil supply pipe at the first oil inlet, and detachably mounting a second oil supply pipe at the second oil inlet, the lubrication device can be connected to the fan equipment while it is running. It automatically adds lubricating oil to the fan equipment at the beginning of its shutdown, completing the lubrication process. This eliminates the need for repeated starting and stopping of the fan equipment and eliminates the need for on-site personnel, thus reducing production and labor costs. In this embodiment, the oil tank stores the lubricating oil, the battery powers the controller, the distributor evenly distributes the lubricating oil pumped by the oil pump to each oil inlet, and the current transformer measures the current in the conductive wire. The current transformer is detachably mounted on the conductive wire, the first oil supply pipe of the oil distributor is detachably installed on the first oil inlet via a quick connector, and the second oil supply pipe of the oil distributor is detachably installed on the second oil inlet via a quick connector. In other words, the current transformer can be mounted on the conductive wire and can be removed from the conductive wire, while the first oil supply pipe and the second oil supply pipe can be installed on or removed from the corresponding oil inlet. Specifically, when adding lubricating oil, before shutting down the fan equipment, the worker can attach the current transformer to the conductive wire, install the first oil supply pipe to the first oil inlet, and the second oil supply pipe to the second oil inlet, thus completing the connection between the lubrication device and the fan equipment. After the heating device is connected to the fan equipment, the current transformer can transmit the current it generates to the controller. The controller can receive and measure the current transmitted by the current transformer in real time and obtain measurement data. When the fan equipment is shut down, the current in the conductive wire will gradually decrease until the measured data is less than the preset value. At this point, the controller will control the oil pump to run, and the oil pump will pump the lubricating oil in the oil tank to the first and second oil inlets through the oil distributor, thus completing the lubrication of the fan equipment. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0024] Figure 1 A connection diagram of the refueling device connected to the blower equipment in an embodiment of this utility model;

[0025] Figure 2 A schematic diagram of the refueling device in the embodiments provided by this utility model;

[0026] Figure 3 A schematic diagram of the current transformer in the locked state in the embodiment provided by this utility model;

[0027] Figure 4 A schematic diagram of the current transformer in the open state in the embodiment provided by this utility model;

[0028] Figure 5 A flowchart illustrating the automatic refueling method in the embodiments provided by this utility model.

[0029] Explanation of icon numbers:

[0030] 1. Refueling device; 100. Base; 110. Roller; 120. Upright pole; 121. Holding rod; 200. Oil tank; 300. Controller; 400. Oil pump; 500. Battery; 600. Oil distributor; 610. First oil delivery pipe; 620. Second oil delivery pipe; 700. Current transformer; 710. First fastening component; 711. First housing; 7111. First groove; 7112. First end face; 712. First conductive block; 713. Concave block; 720. Second fastening component; 721. Second housing; 7211. Second groove; 7212. Second end face; 722. Second conductive block; 723. Wire; 724. Extension block; 7241. Snap-fit ​​hole; 730. Through hole; 800. Support frame; 810. Accommodation space; 820. Hook; 821. Mounting rod; 822. Arc rod; 823. Limiting rod; 900. Reception box; 2. Fan body; 21. First oil inlet; 3. Motor body; 31. Second oil inlet; 4. Power supply; 41. Conductive wire.

[0031] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0032] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0033] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0034] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, if "and / or" or "and / or" appears throughout the text, its meaning includes three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously.

[0035] Furthermore, the technical solutions of the various embodiments of this utility model can be combined with each other, but only if they are based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0036] In automobile production, exhaust systems are widely used in production areas such as spray booths, drying ovens, and workshops for exhaust. These systems are primarily powered by fans, and regular maintenance, including lubrication, is required to ensure their proper operation. However, in actual production, researchers have found that fans typically operate at full load for extended periods with minimal shutdown. Yet, lubrication typically requires shutting down the fan completely before lubrication, and then restarting it afterward. This repeated starting and stopping of the fan during maintenance generates additional energy consumption and increases production costs. It's important to note that restarting the fan after lubrication ensures smooth oil flow to all lubrication points and removes air from the oil lines, thus guaranteeing proper operation after lubrication. Furthermore, when adding lubricating oil to the wind turbine equipment, workers need to wait on-site until the wind turbine equipment has completely stopped before adding lubricating oil, which wastes workers' time and increases labor costs.

[0037] This utility model proposes a refueling device and an automatic refueling method, aiming to solve the technical problem of high production costs caused by the need to shut down the fan equipment during maintenance.

[0038] Please see Figure 1 and Figure 2 In one embodiment of this utility model, the refueling device 1 is applied to a fan device, which includes a fan body 2, a motor body 3, and a power supply 4. The fan body 2 is provided with a first oil inlet 21, and the motor body 3 is provided with a second oil inlet 31. A conductive wire 41 is provided between the power supply 4 and the motor body 3. In this embodiment of the utility model, the motor body 3 is a three-phase motor, and the conductive wire 41 is connected to one of the U-phase, V-phase, and W-phase of the three-phase motor. It should be noted that when the fan device is turned off, the current in the conductive wire 41 will gradually decrease to 0A; for example, when the fan device is turned off, the current in the conductive wire 41 of the three-phase motor will gradually decrease from 100A to 0A.

[0039] The refueling device 1 of this utility model includes a base 100, an oil storage tank 200, a controller 300, an oil pump 400, a battery 500, an oil distributor 600, and a current transformer 700. The oil storage tank 200, controller 300, and battery 500 are all mounted on the base 100. The oil pump 400 is located inside the oil storage tank 200 and is used to pump lubricating oil. The oil distributor 600 is connected to the oil pump 400 and is equipped with a first oil delivery pipe 610 and a second oil delivery pipe 620. The first oil delivery pipe 610 is detachably mounted at the first oil inlet 21, and the second oil delivery pipe 620 is detachably mounted at the second oil inlet 31. Pump 400 is connected to first oil inlet 21 and second oil inlet 31 via oil distributor 600, first oil supply pipe 610, and second oil supply pipe 620; current transformer 700 is detachably sleeved on conductive wire 41; current transformer 700, oil pump 400, and battery 500 are all electrically connected to controller 300; controller 300 can receive and measure the current transmitted by current transformer 700 in real time, acquire measurement data, and control oil pump 400 to run when the measurement data is less than a preset value. Oil pump 400 delivers lubricating oil from oil tank 200 to first oil inlet 21 and second oil inlet 31 via oil distributor 600.

[0040] In the technical solution of this utility model, by setting a current transformer 700 detachably sleeved on the conductive wire 41, a first oil supply pipe 610 detachably set on the first oil inlet 21, and a second oil supply pipe 620 detachably set on the second oil inlet 31, the oiling device 1 can be connected to the wind turbine when the wind turbine is running, and automatically add lubricating oil to the wind turbine at the beginning of the wind turbine shutdown, thus completing the oiling work. This eliminates the need for repeated starting and stopping of the wind turbine and also eliminates the need for on-site personnel, thereby reducing production and labor costs. In this embodiment, the oil tank 200 is used to store lubricating oil, the battery 500 is used to power the controller 300, the oil distributor 600 is used to evenly distribute the lubricating oil pumped by the oil pump 400 to each oil inlet, and the current transformer 700 is used to measure the current in the conductive wire 41. The current transformer 700 is detachably mounted on the conductive wire 41. The first oil supply pipe 610 of the oil distributor 600 is detachably installed on the first oil inlet 21 via a quick connector. The second oil supply pipe 620 of the oil distributor 600 is detachably installed on the second oil inlet 31 via a quick connector. In other words, the current transformer 700 can be mounted on the conductive wire 41 and can be removed from the conductive wire 41, while the first oil supply pipe 610 and the second oil supply pipe 620 can be installed on or removed from the corresponding oil inlet. Specifically, when adding lubricating oil, before shutting down the fan equipment, the worker can attach the current transformer 700 to the conductive wire 41, install the first oil supply pipe 610 to the first oil inlet 21, and install the second oil supply pipe 620 to the second oil inlet 31, thus completing the connection between the lubrication device 1 and the fan equipment. After the heating device is connected to the fan equipment, the current transformer 700 can transmit the current it generates to the controller 300. The controller 300 can receive and measure the current transmitted by the current transformer 700 in real time and obtain measurement data. When the fan equipment is shut down, the current in the conductive wire 41 will gradually decrease until the measured data is less than the preset value. Then, the controller 300 will control the oil pump 400 to run, and the oil pump 400 will send the lubricating oil in the oil storage tank 200 to the first oil inlet 21 and the second oil inlet 31 through the oil distributor 600, thus completing the lubrication of the fan equipment.

[0041] It should be noted that the lubrication device 1 adds lubricating oil to the fan equipment at the beginning of its shutdown. That is, when the lubrication device 1 completes the lubrication, the fan equipment is still in the shutdown process, meaning it is still running at a certain speed. As the fan equipment runs, the lubricating oil can flow smoothly through each lubrication point, and the fan equipment can also expel air from the oil circuit. Therefore, by using the lubrication device 1 to add lubricating oil when the fan equipment is shut down, there is no need to restart the fan equipment, which reduces energy consumption and saves production costs. Furthermore, the lubrication does not require workers to wait on-site, saving labor costs. In the embodiments of this utility model, the measurement data of the current transformer 700 obtained by the controller 300 when the three-phase motor is running normally is defined as α. The preset value can be 80% of α; for example, when α = 100A, the preset value is 80A. In addition, the current transformer 700 is an electrical device based on the principle of electromagnetic induction; specifically, when current flows through the conductor 41, the conductor 41 generates an alternating magnetic field, and the winding in the current transformer 700 is subjected to the alternating magnetic field, thereby generating current and transmitting the generated current to the controller 300.

[0042] Please see Figure 3 and Figure 4In one embodiment of the present invention, the current transformer 700 includes a first fastening member 710 and a second fastening member 720; one side of the first fastening member 710 is rotatably connected to one side of the second fastening member 720, and the other side of the first fastening member 710 is engaged with the other side of the second fastening member 720; the current transformer 700 includes a fastened state and an open state; when the current transformer 700 is in the fastened state, the other side of the first fastening member 710 is engaged with the other side of the second fastening member 720, and the first fastening member 710 and the second fastening member 720 abut against each other and form a through hole 730 for the conductive wire 41 to pass through; when the current transformer 700 is in the open state, the other side of the first fastening member 710 is separated from the other side of the second fastening member 720, and the first fastening member 710 and the second fastening member 720 are arranged at an angle. In this embodiment of the present invention, the current transformer 700 includes a first fastening member 710 and a second fastening member 720 rotatably connected. The first fastening member 710 and the second fastening member 720 can form a through hole 730 for the conductive wire 41 to pass through; at the same time, they can also be set at an angle so that the conductive wire 41 can be disengaged from the current transformer 700 through the space at the angle between the two. In other words, by driving the first fastening member 710 and the second fastening member 720 to rotate relative to each other, the current transformer 700 can be fitted onto or removed from the conductive wire 41, which can reduce the difficulty for workers to disassemble and assemble the current transformer 700. Specifically, when connecting the refueling device 1 to the blower equipment, the worker can switch the current transformer 700 to the open state and place the conductive wire 41 in the angled space between the first fastening member 710 and the second fastening member 720. Then, drive the first fastening member 710 and the second fastening member 720 to rotate relative to each other, so that the current transformer 700 is switched to the fastened state, and the current transformer 700 can be fitted onto the conductive wire 41. When the refueling device 1 is finished and the current transformer 700 is removed, the worker only needs to switch the current transformer 700 from the fastened state to the open state and move the conductive wire 41 out of the angled space between the first fastening member 710 and the second fastening member 720 to remove the current transformer 700.

[0043] In one embodiment of this utility model, the first fastening member 710 includes a first housing 711 and a first conductive block 712. The first housing 711 has a first groove 7111, and the first conductive block 712 is disposed in the first housing 711 and extends circumferentially along the first groove 7111. The second fastening member 720 includes a second housing 721, a second conductive block 722, and a wire 723. The second housing 721 has a second groove 7211, and the second conductive block 722 is disposed in the second housing 721 and extends circumferentially along the second groove 7211. Extending outwards, the conductor 723 is wound around the second conductive block 722, and both ends of the conductor 723 are connected to the controller 300. When the current transformer 700 is in the engaged state, the first groove 7111 and the second groove 7211 form a through hole 730, and the two ends of the first conductive block 712 abut against the two ends of the second conductive block 722, respectively. When the current transformer 700 is in the open state, the first fastening member 710 and the second fastening member 720 are set at an angle, and the first conductive block 712 is separated from the second conductive block 722. In the embodiment of this utility model, the through hole 730 formed by the first groove 7111 of the first housing 711 and the second groove 7211 of the second housing 721 provides sufficient space for the conductive wire 41 to pass through. When the current transformer 700 is in the engaged state, the two ends of the first conductive block 712 abut against the two ends of the second conductive block 722 respectively to form an annular conductive block. Specifically, when the current transformer 700 is sleeved in the conductive wire 41, as the motor body 3 runs, current flows through the conductive wire 41, and an alternating magnetic field is generated around it. The part of the conductor 723 wound around the second conductive block 722 (i.e., the winding) is subjected to the alternating magnetic field, thereby generating current and transmitting the generated current to the controller 300. Thus, the controller 300 can receive and measure the current transmitted by the current transformer 700.

[0044] In one embodiment of this utility model, the first housing 711 is provided with a first end face 7112 facing the second housing 721, and the second housing 721 is provided with a second end face 7212 facing the first housing 711; both ends of the first conductive block 712 extend out of the first end face 7112 and / or both ends of the second conductive block 722 extend out of the second end face 7212. In this embodiment of the utility model, having both ends of the first conductive block 712 extend out of the first end face 7112, or both ends of the second conductive block 722 extend out of the second end face 7212, ensures that when the current transformer 700 switches to the engaging state, the first conductive block 712 and the second conductive block 722 can abut against each other and form an annular conductive block.

[0045] In one embodiment of this utility model, the first fastening member 710 is provided with a protrusion, and the second fastening member 720 is provided with an extension block 724, the extension block 724 being provided with a snap-fit ​​hole 7241; when the current transformer 700 is in the fastened state, the protrusion snaps into the snap-fit ​​hole 7241. In this embodiment of the utility model, the current transformer 700 is locked in the fastened state by a snap-fit ​​method, which can reduce the difficulty for workers to put the current transformer 700 onto the conductive wire 41. In a specific embodiment, in order to fix the position of the conductive wire 41 when the current transformer 700 is put onto the conductive wire 41, a corresponding locking structure can be provided on the first fastening member 710 or the second fastening member 720. For example, the first fastening member 710 or the second fastening member 720 is provided with a mounting rod 821. After the worker puts the current transformer 700 onto the conductive wire 41, the worker can use cable ties or other fixing straps to fix the conductive wire 41 to the mounting rod 821.

[0046] Please see Figure 2 In one embodiment of this utility model, the refueling device 1 further includes a support frame 800 and a receiving box 900. The support frame 800 is disposed on the base 100 and spaced apart from the oil tank 200, and the receiving box 900 is disposed on the support frame 800. The support frame 800 is provided with a storage space, and the controller 300 and the battery 500 are both disposed in the receiving box 900. In this embodiment of the utility model, the storage space formed by the support frame 800 is used to place tools; specifically, after the worker removes the refueling device 1 from the blower equipment, the worker can place the current transformer 700, the shunt, and the corresponding wires 723 in the storage space to facilitate the worker's transfer of the refueling device 1. Installing the controller 300 and the battery 500 in the receiving box 900 can better protect the controller 300 and the battery 500 and reduce the risk of damage due to impact.

[0047] In one embodiment of this utility model, hooks 820 are provided on both sides of the support frame 800. Each hook 820 includes a mounting rod 821, an arc-shaped rod 822, and a limiting rod 823 connected in sequence. Each mounting rod 821 is disposed on the support frame 800, and the limiting rod 823 is arranged parallel to the mounting rod 821. In this embodiment of the utility model, the hooks 820 are used to suspend tools; specifically, after the worker removes the refueling device 1 from the blower equipment, the worker can suspend the current transformer 700, the shunt, and the corresponding wire 723 in the hooks 820 to facilitate the worker's transfer of the refueling device 1.

[0048] In one embodiment of this utility model, the refueling device 1 further includes a plurality of rollers 110, which are evenly arranged on the lower end surface of the base 100. The base 100 is provided with two uprights 120, and a gripping rod 121 is provided between the ends of the two uprights 120 facing away from the base 100. In this embodiment of the utility model, the purpose of providing the rollers 110 and the gripping rod 121 is to reduce the difficulty for workers to move the refueling device 1. In a specific embodiment, the number of rollers 110 is four, and the four rollers 110 are arranged in a rectangular shape.

[0049] Please see Figure 5 This utility model also proposes an automatic refueling method, applied to the aforementioned refueling device 1, the automatic refueling method comprising:

[0050] S100, Acquire measurement data;

[0051] S200: Compare the measured data with the preset value; if the measured data is greater than the preset value, the controller 300 controls the oil pump 400 to stop running; if the measured data is less than the preset value, the controller 300 controls the oil pump 400 to run.

[0052] Specifically, when the refueling device 1 is connected to the fan equipment and the fan equipment is shut down, the controller 300 can control the oil pump 400 to run when the measured data is less than the preset value. The oil pump 400 can then send the lubricating oil in the oil storage tank 200 to the first oil inlet 21 and the second oil inlet 31 through the oil distributor 600, thus completing the lubricating oil refueling of the fan equipment.

[0053] The above description is merely an exemplary embodiment of the present utility model and does not limit the patent scope of the present utility model. Any equivalent structural transformations made based on the technical concept of the present utility model and the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. A refueling device applied to a blower, the blower comprising a blower body, a motor body, and a power supply, wherein the blower body is provided with a first oil inlet, the motor body is provided with a second oil inlet, and a conductive wire is provided between the power supply and the motor body, characterized in that, The refueling device includes a base, an oil tank, a controller, an oil pump, and a current transformer. The oil tank and the controller are both located on the base. The oil pump is located inside the oil tank and is used to pump lubricating oil. The first oil inlet and the second oil inlet are both connected to the oil pump. The current transformer is detachably sleeved on the conductive wire. Both the current transformer and the oil pump are electrically connected to the controller; the controller can receive and measure the current transmitted by the current transformer in real time and obtain measurement data; when the measurement data is less than a preset value, the controller controls the oil pump to run, and the oil pump can pump the lubricating oil in the oil tank to the first oil inlet and the second oil inlet.

2. The refueling device as described in claim 1, characterized in that, The current transformer includes a first fastening member and a second fastening member; one side of the first fastening member is rotatably connected to one side of the second fastening member, and the other side of the first fastening member is engaged with the other side of the second fastening member; The current transformer includes a locked state and an open state; When the current transformer is in the engaged state, the other side of the first fastening member engages with the other side of the second fastening member, and the first fastening member and the second fastening member abut against each other and form a through hole for the conductive wire to pass through; when the current transformer is in the open state, the other side of the first fastening member separates from the other side of the second fastening member, and the first fastening member and the second fastening member are set at an angle.

3. The refueling device as described in claim 2, characterized in that, The first fastening member includes a first housing and a first conductive block. The first housing has a first groove, and the first conductive block is disposed on the first housing and extends circumferentially along the first groove. The second fastening member includes a second housing, a second conductive block, and a wire. The second housing has a second groove. The second conductive block is disposed in the second housing and extends circumferentially along the second groove. The wire is wound around the second conductive block, and both ends of the wire are connected to the controller. When the current transformer is in the engaged state, the first groove and the second groove form the through hole, and the two ends of the first conductive block abut against the two ends of the second conductive block respectively; when the current transformer is in the open state, the first fastening member and the second fastening member are set at an angle, and the first conductive block and the second conductive block are separated.

4. The refueling device as described in claim 3, characterized in that, The first housing has a first end face facing the second housing, and the second housing has a second end face facing the first housing; both ends of the first conductive block extend out of the first end face; And / or, both ends of the second conductive block extend out of the second end face.

5. The refueling device as described in claim 2, characterized in that, The first fastening member is provided with a protrusion, and the second fastening member is provided with an extension block, the extension block being provided with a snap-fit ​​hole; When the current transformer is in the engaged state, the protrusion engages with the snap-fit ​​hole.

6. The refueling device as described in any one of claims 1 to 5, characterized in that, The refueling device also includes a support frame, a housing box, and a battery. The support frame is disposed on the base and spaced apart from the oil tank, and the housing box is disposed on the support frame. The support frame has a storage space, and the controller and the battery are both disposed in the housing box.

7. The refueling device as described in claim 6, characterized in that, Hooks are provided on both sides of the support frame. Each hook includes a mounting rod, an arc-shaped rod, and a limiting rod connected in sequence. Each mounting rod is provided on the support frame, and the limiting rod is arranged parallel to the mounting rod.

8. The refueling device as described in any one of claims 1 to 5, characterized in that, The refueling device also includes multiple rollers, which are evenly arranged on the lower end surface of the base.

9. The refueling device as described in any one of claims 1 to 5, characterized in that, The base is provided with two uprights, and a gripping rod is provided between the ends of the two uprights that are away from the base.

10. The refueling device as described in any one of claims 1 to 5, characterized in that, The refueling device also includes a distributor, which is connected to the oil pump. The distributor is provided with a first oil delivery pipe and a second oil delivery pipe. The first oil delivery pipe is detachably installed at the first oil inlet, and the second oil delivery pipe is detachably installed at the second oil inlet.

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