CN218919431U - Automatic electricity taking device - Google Patents
Automatic electricity taking device Download PDFInfo
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- CN218919431U CN218919431U CN202223247362.XU CN202223247362U CN218919431U CN 218919431 U CN218919431 U CN 218919431U CN 202223247362 U CN202223247362 U CN 202223247362U CN 218919431 U CN218919431 U CN 218919431U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
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Abstract
The utility model discloses an automatic electricity taking device, which comprises: the power transmission device comprises an on-vehicle power taking and guiding device arranged on a vehicle and a ground power transmission adjustable device arranged at a designated power taking site, wherein the on-vehicle power taking and guiding device drives the power taking device to be movably connected with the power transmission device on the power transmission adjustable device so as to automatically take power. Through the mode, the automatic power taking device can realize the up-down, left-right position change of the power transmission device and the up-down, left-right swing of the power taking contact, so that the power taking contact can be safely, stably and reliably led into the power transmission device under various limit states, and the power required by stations is provided by equipment on a vehicle.
Description
Technical Field
The utility model relates to the technical field of steelmaking equipment, in particular to an automatic electricity taking device for a switch cover of a ladle car.
Background
Currently, ladles are used for transporting molten iron from a blast furnace to a converter. Smelting iron ore into liquid molten iron requires a lot of energy, however, the distance between a blast furnace and a converter in a steel mill is often far, and the continuous heat exchange between the molten iron and air is inevitably caused when the molten iron is conveyed from the blast furnace to the converter by an open type ladle in a factory, so that the temperature of molten iron entering the furnace is reduced, and finally the steelmaking cost is increased. In addition, a large amount of smoke dust emitted in the molten iron transportation process can pollute the environment, and the service life of related equipment is influenced. By implementing the ladle capping technology, the problems of heat dissipation and dust emission of the ladle during transportation can be remarkably reduced, the field operation environment is improved, and the energy consumption and the consumption of auxiliary materials such as a covering agent, carbonized rice hulls and the like are saved.
The existing ladle capping technology adopts hydraulic pressure or pure machinery as power to realize the action of opening and closing the cap, and the existing ladle capping technology needs to be driven by electric energy no matter the existing ladle capping technology adopts hydraulic pressure or pure machinery. The electric energy of the ladle capping technology is taken by manually plugging and unplugging a power supply on the ground. The manual power taking requires that an operator drags and pulls a cable with an aviation plug on the ground to an aviation socket beside the vehicle, then inserts the aviation plug into the socket, and turns on a power switch button so as to realize power taking. Because the cost of labor is expensive, operating personnel are unwilling to increase the manual electricity-taking workload under the existing working condition, and the ground electricity-taking device needs to drag and plug the cable wire back and forth, the cable wire and aviation plug socket are easy to damage, the safety risk of electric leakage exists, the later maintenance cost is higher, and therefore the automatic electricity-taking technical requirement for covering the iron ladle is also increasing.
At present, as the steel mill has stricter control on cost, stricter requirements are also brought to the ladle capping project: the required project investment cost is low, the use cost is low, and the later maintenance cost is low, so the automatic power taking device is preferable.
The current trolley line electricity taking technology is that a current collector is always positioned in the trolley line and moves along the trolley line to take electricity, but the allowable deviation of the current collector in contact sliding in the trolley line is smaller, and the current collector has higher requirement on installation precision. The train ladle needs to be powered on to perform the cover opening and closing operation when the train arrives at the designated station, the power taking and cover opening and closing operation is not required during transportation, and the distance between the designated stations is quite long, so that the train ladle is not suitable for the whole transportation route to install the trolley line for power taking, and the power transmission device can only be independently installed at each designated station. Because the power taking contact is arranged on the ladle car, and the power transmission device is arranged at each appointed station, the power taking contact is not always positioned in the power transmission device, and frequent lead-in and slide-out of the power taking contact at the appointed station are required; in addition, when the ladle car runs along the track, an error activity gap of about +/-50 mm exists in the vertical track direction, and in the height direction, the ladle car causes the integral height change of the ladle car due to the influence of the heavy ladle, the empty ladle and the non-ladle of the ladle, particularly a steelmaking station, when the crown block is in the ladle hanging state, the power taking contact is still positioned in the power transmission device, the shaking amplitude of the ladle car is relatively large due to the influence of the ladle hanging state, and the amplitude reaches more than 150 mm. The electric contact on the ladle car can move along with the ladle car, although the electric contact has a certain adjustment matching amount, the adjustment amount is only +/-30 mm, and the accumulated error of the power transmission device and the power taking device is mounted, so that the existing trolley wire device can not meet the automatic power taking requirement of the existing ladle cover, and cannot be reasonably and effectively applied.
Disclosure of Invention
The utility model mainly solves the technical problem of providing the automatic electricity taking device, which has the advantages of high reliability, accurate positioning, compact structure and the like, and has wide market prospect in the application and popularization of steelmaking equipment.
In order to solve the technical problems, the utility model adopts a technical scheme that:
provided is an automatic power taking device, which comprises: the on-vehicle electricity taking and guiding device is arranged on the vehicle and the ground electricity transmission adjustable device is arranged at the appointed electricity taking site, the on-vehicle electricity taking and guiding device drives the electricity taking device to be movably connected with the electricity transmission device on the ground electricity transmission adjustable device so as to automatically take electricity,
the ground power transmission adjustable device comprises a stand column fixed on the ground, a rotating arm and a power transmission device fixing frame for installing the power transmission device, one end of the rotating arm is rotationally connected with the stand column, a supporting spring is connected between the rotating arm and the stand column, so that the rotating arm swings up and down around the stand column, the other end of the rotating arm is rotationally connected with the power transmission device fixing frame, the power transmission device fixing frame is elastically connected with the rotating arm through a swinging spring, so that the power transmission device fixing frame swings left and right on the rotating arm, a limiting wheel guide groove is arranged on the inner side wall of the power transmission device fixing frame,
the on-vehicle electricity taking guiding device comprises a vertical direction moving mechanism, a horizontal direction moving mechanism and a guiding mechanism connected with the electricity taking device, wherein the guiding mechanism guides the movement of the electricity taking device according to the position of the electricity transmission adjustable device, so that a contact of the electricity taking device is in contact connection with the electricity transmission device; the guiding mechanism is connected with the horizontal direction movement mechanism, so that the horizontal direction movement mechanism drives the power taking device to move left and right through the guiding of the guiding mechanism, and the horizontal direction movement mechanism is connected with the vertical direction movement mechanism, so that the vertical direction movement mechanism drives the power taking device to move up and down through the guiding of the guiding wheel mechanism.
In a preferred embodiment of the present utility model, the vertical direction movement mechanism includes a fixed frame, a vertical shaft, an up-down spring, and a vertical linear bearing, wherein the vertical shaft is disposed in the fixed frame, the vertical linear bearing is movably disposed on the vertical shaft, and the top and bottom of the vertical linear bearing are respectively elastically connected with the fixed frame or the vertical shaft through the up-down spring, so that the vertical linear bearing performs up-down movement in a vertical direction according to compression or extension of the up-down spring.
In a preferred embodiment of the present utility model, the horizontal direction movement mechanism includes a horizontal frame, a horizontal shaft, a horizontal spring, and a horizontal linear bearing, where the horizontal frame is connected to the vertical linear bearing, the horizontal shaft is disposed in the horizontal frame, the horizontal linear bearing is movably disposed on the horizontal shaft, and two ends of the horizontal linear bearing are respectively and elastically connected to the horizontal frame or the horizontal shaft through the horizontal spring, so that the horizontal linear bearing performs horizontal left and right movement according to compression or extension of the horizontal spring.
In a preferred embodiment of the present utility model, an upper and a lower spring pressure adjusting nuts for adjusting the supporting forces of the upper and the lower springs are provided at the upper and the lower parts of the vertical shaft, and a horizontal spring pressure adjusting nut for adjusting the supporting forces of the horizontal springs is provided at both ends of the horizontal shaft.
In a preferred embodiment of the utility model, the guiding mechanism comprises a guiding frame for installing the electricity taking device, a vertical direction limiting pulley and a horizontal direction limiting pulley, wherein the guiding frame is connected with a horizontal linear bearing, and the vertical direction limiting pulley and the horizontal direction limiting pulley are rotatably arranged on the guiding frame and are respectively and movably connected with the limiting wheel guiding groove, so that the vertical direction limiting pulley and the horizontal direction limiting pulley move along the limiting wheel guiding groove to guide and correct the positions of the current collectors on the guiding frame and the guiding frame.
In a preferred embodiment of the present utility model, the vertical limiting pulleys are rotatably disposed at two sides of the guide frame, and the horizontal limiting pulleys are rotatably disposed at front and rear ends of the guide frame.
In a preferred embodiment of the present utility model, the rotating arm is movably connected to the upright post through a first shaft, and the power transmission device fixing frame is connected to the rotating arm through a second shaft.
In a preferred embodiment of the utility model, the upright is provided with a boss for mounting a support spring.
In a preferred embodiment of the present utility model, two sets of swing springs connected to the rotating arm are disposed at the top of the power transmission device fixing frame, and the two sets of swing springs are disposed on two sides of the second rotating shaft, so as to limit the left-right swing of the power transmission device fixing frame.
In a preferred embodiment of the present utility model, the power transmission device fixing frame is disposed in a through slot that allows the power taking device to pass through and connect with the power transmission device in a contact manner, and the limit wheel guiding slot is disposed below the power transmission device.
The beneficial effects of the utility model are as follows: the power transmission device can realize the up-down, left-right position change of the power transmission device and the up-down, left-right swing of the power taking contact, so that the power taking contact can be safely, stably and reliably led into the power transmission device under various limit states, and the power required by stations is provided by equipment on a vehicle.
Drawings
For a clearer description of the technical solutions of the embodiments of the present utility model, the drawings that are needed in the description of the embodiments will be briefly introduced below, it being obvious that the drawings in the description below are only some embodiments of the present utility model, and that other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art, wherein:
FIG. 1 is a schematic view showing the internal structure of an automatic power take-off device for a ladle switch cover apparatus according to a preferred embodiment of the present utility model;
fig. 2 is a schematic overall structure of an automatic power take-off device for a ladle switch cover device according to a preferred embodiment of the present utility model.
Detailed Description
The following description of the technical solutions in the embodiments of the present utility model will be clear and complete, and it is obvious that the described embodiments are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
Referring to fig. 1-2, an embodiment of the present utility model includes:
an automatic electricity taking device, which structurally comprises: the device comprises an on-board electricity taking guiding device and a ground electricity transmission adjustable device, wherein the on-board electricity taking guiding device is fixedly arranged (welded) on a ladle or a ladle car, the ground electricity transmission adjustable device is arranged at a designated electricity taking site, and the on-board electricity taking guiding device drives an electricity taking device (electricity taking contact) 25 to be movably connected with a power transmission device 26 on the ground electricity transmission adjustable device so as to automatically take electricity, so that the driving energy supply of the ladle automatic opening and closing cover equipment is realized.
The on-vehicle electricity-taking guiding device comprises a vertical direction moving mechanism, a horizontal direction moving mechanism and a guiding mechanism. The power taking contact is arranged on the guide mechanism, and the guide mechanism can guide the movement of the power taking contact according to the position of the power transmission device, so that the power taking contact can be in contact connection with the power transmission device more accurately and rapidly; the guide mechanism is integrally fixed on the horizontal direction moving mechanism, the horizontal direction moving mechanism can lead the power taking contact to move left and right in the horizontal direction adaptively according to the position of the power transmission device through the guide of the guide mechanism, the horizontal direction moving mechanism is integrally arranged on the vertical direction moving mechanism, and the vertical direction moving mechanism can lead the power taking contact to move up and down in the vertical direction adaptively according to the position of the power transmission device through the guide of the guide wheel mechanism.
The vertical direction motion mechanism comprises a fixed frame 1, a vertical shaft 2, an upper spring 3, a lower spring 3 and a vertical linear bearing 4, wherein the fixed frame can be movably or welded on a ladle car, the vertical shaft is assembled in the fixed frame, the vertical linear bearing is movably arranged on the vertical shaft, and the top and the bottom of the vertical linear bearing are respectively in elastic connection with the fixed frame or the vertical shaft through the upper spring and the lower spring, so that the vertical linear bearing can perform vertical up-and-down motion according to compression or stretching of the upper spring and the lower spring.
Further preferably, an upper and a lower spring pressure regulating nuts 5 are fixedly arranged at the upper part and the lower part of the vertical shaft respectively, so that the supporting force of the upper and the lower springs is regulated by the upper and the lower spring pressure regulating nuts (positions), one ends of the upper and the lower springs are connected with the upper and the lower spring pressure regulating nuts, and the other ends of the upper and the lower springs are connected with the vertical linear bearings.
Further preferably, the gasket 6 is movably sleeved on the vertical shaft and connected with the vertical linear bearing so as to fixedly connect the upper spring and the lower spring.
The horizontal direction movement mechanism comprises a horizontal frame 7, a horizontal shaft 8, a horizontal spring 9 and a horizontal linear bearing 10, wherein the horizontal frame is fixed on the vertical linear bearing through screws, the horizontal shaft is arranged in the horizontal frame, the horizontal linear bearing is movably arranged on the horizontal shaft, and two ends of the horizontal linear bearing are respectively in elastic connection with the horizontal frame or the horizontal shaft through the horizontal spring, so that the horizontal linear bearing can move horizontally left and right according to compression or extension of the horizontal spring.
Further preferably, two ends of the horizontal shaft are respectively and fixedly provided with a horizontal spring pressure regulating nut 11, so that the supporting force of the horizontal spring is regulated through the horizontal spring pressure regulating nut (position), one end of the horizontal spring is connected with the horizontal spring pressure regulating nut, and the other end of the horizontal spring is connected with the horizontal linear bearing.
Further preferably, the gasket is movably sleeved on the horizontal shaft and connected with the horizontal linear bearing so as to be fixedly connected with the horizontal spring.
The guiding mechanism comprises a guiding frame 12 for installing and fixing an electric contact, a vertical direction limiting pulley 13 and a horizontal direction limiting pulley 14, wherein the guiding frame can be fixed on a horizontal linear bearing through screws, the vertical direction limiting pulley is rotationally arranged on two sides of the guiding frame, the horizontal direction limiting pulley is rotationally arranged on the front end and the rear end of the guiding frame, the vertical direction limiting pulley and the horizontal direction limiting pulley are respectively movably connected with a limiting wheel guiding groove, and the vertical direction limiting pulley and the horizontal direction limiting pulley can move along the limiting wheel guiding groove so as to guide and correct the position of a current collector on the guiding frame and the guiding frame.
The vertical limiting pulley is matched with the top surface and the bottom surface of the limiting pulley guide groove so as to guide, correct and limit the upper and lower positions of the power-taking contact through the guide frame; the horizontal limiting pulley is matched with the side wall of the limiting pulley guide groove so as to guide, correct and limit the left and right positions of the power-taking contact through the guide frame.
The adjustable device for ground power transmission comprises a stand column 15, a rotating arm 16 and a power transmission device fixing frame 17, wherein the stand column 15 is fixed on the ground, the rotating arm is used for fixedly mounting a power transmission device, the rotating arm is movably connected with the stand column through a first rotating shaft 18, a supporting spring 19 is connected between the rotating arm and the stand column, the rotating arm can swing around the first rotating shaft greatly up and down according to the stress condition of the rotating arm, the power transmission device fixing frame is hinged on the rotating arm through a second rotating shaft 20, the power transmission device fixing frame is elastically connected with the rotating arm through a swinging spring 21, the power transmission device fixing frame can swing around the second rotating shaft slightly according to the stress condition of the power transmission device, and a limiting wheel guide groove 22 is formed in the inner side wall of the power transmission device fixing frame.
Further preferably, a boss 23 for mounting the supporting spring is provided on the upright.
Further preferably, two groups of swing springs connected with the rotating arm are arranged at the top of the power transmission device fixing frame, and the two groups of swing springs are oppositely arranged at two sides of the second rotating shaft so as to limit the left-right swing of the power transmission device fixing frame.
Further preferably, the power transmission device holder is provided with a through groove 24 which allows the power taking contact to pass therethrough and be in contact connection with the power transmission device.
Further preferably, the power transmission device is arranged at the upper part of the power transmission guiding device fixing frame, and the limiting wheel guiding groove is arranged below the power transmission device fixing frame.
The main operation steps of the automatic power taking device for the vehicle-mounted equipment for taking power comprise the following steps: the vehicle moves to a power taking station where the ground power transmission adjustable device is located, and drives a power taking contact to be close to a power transmission device fixing frame; the vertical limiting pulley and the horizontal limiting pulley are matched with the limiting pulley guide groove to guide, and at the moment, the vertical direction movement mechanism and the horizontal direction movement mechanism are adjusted and reset to guide the left and right and upper and lower positions of the power taking contact in a self-adaptive mode, so that the power taking contact can move accurately into the power transmission device fixing frame so as to be connected with the power taking contact to take power; in addition, when the ladle car shakes, the position and the angle of the power transmission device can be adjusted through the left-right swing of the fixing frame of the power transmission device and the up-down swing of the rotating arm, so that the power transmission device is matched with the motion of the power taking device and is kept in tight connection, and the automatic power taking of the safe, stable and reliable ladle capping device is realized; after electricity is taken out, the vehicle drives the electricity taking device to withdraw from the fixing frame of the power transmission device, and the vertical direction movement mechanism and the horizontal direction movement mechanism reset the electricity taking contact and wait for next electricity taking.
The automatic power taking device has the beneficial effects that:
(1) The automatic power supply device can realize the up-down, left-right degree-of-freedom position change and automatic reset of the power supply contact, and can safely, stably and reliably guide the power supply contact into the power supply device under various limit states within the range of the movement error of a vehicle when the power supply device is separated from the power supply device and power is required to be supplied;
(2) The power transmission device can swing up and down and left and right, and the power transmission device can also match with the swing when the power taking contact swings along with the ladle car, so that the power taking of the vehicle-mounted equipment is realized, and the problem that the power taking contact cannot be normally used in the power transmission device due to the large swing amplitude of the ladle car in the up and down and left and right directions due to the weightlessness of the ladle car when the overhead crane in a steelmaking workshop hangs the ladle is solved;
(3) The manual plug-in cost is reduced, and the manufacturing cost and the later maintenance cost are low.
The foregoing description is only illustrative of the present utility model and is not intended to limit the scope of the utility model, and all equivalent structures or equivalent processes or direct or indirect application in other related arts are included in the scope of the present utility model.
Claims (10)
1. An automatic power take-off device, comprising: the on-vehicle electricity taking and guiding device is arranged on the vehicle and the ground electricity transmission adjustable device is arranged at the appointed electricity taking site, the on-vehicle electricity taking and guiding device drives the electricity taking device to be movably connected with the electricity transmission device on the ground electricity transmission adjustable device so as to automatically take electricity,
the ground power transmission adjustable device comprises a stand column fixed on the ground, a rotating arm and a power transmission device fixing frame for installing the power transmission device, one end of the rotating arm is rotationally connected with the stand column, a supporting spring is connected between the rotating arm and the stand column, so that the rotating arm swings up and down around the stand column, the other end of the rotating arm is rotationally connected with the power transmission device fixing frame, the power transmission device fixing frame is elastically connected with the rotating arm through a swinging spring, so that the power transmission device fixing frame swings left and right on the rotating arm, a limiting wheel guide groove is arranged on the inner side wall of the power transmission device fixing frame,
the on-vehicle electricity taking guiding device comprises a vertical direction moving mechanism, a horizontal direction moving mechanism and a guiding mechanism connected with the electricity taking device, wherein the guiding mechanism guides the movement of the electricity taking device according to the position of the electricity transmission adjustable device, so that a contact of the electricity taking device is in contact connection with the electricity transmission device; the guiding mechanism is connected with the horizontal direction movement mechanism, so that the horizontal direction movement mechanism drives the power taking device to move left and right through the guiding of the guiding mechanism, and the horizontal direction movement mechanism is connected with the vertical direction movement mechanism, so that the vertical direction movement mechanism drives the power taking device to move up and down through the guiding of the guiding wheel mechanism.
2. The automatic power taking device according to claim 1, wherein the vertical direction movement mechanism comprises a fixed frame, a vertical shaft, an upper spring, a lower spring and a vertical linear bearing, the vertical shaft is arranged in the fixed frame, the vertical linear bearing is movably arranged on the vertical shaft, and the top and the bottom of the vertical linear bearing are respectively and elastically connected with the fixed frame or the vertical shaft through the upper spring and the lower spring, so that the vertical linear bearing performs vertical direction up-and-down movement according to compression or extension of the upper spring and the lower spring.
3. The automatic power taking device according to claim 2, wherein the horizontal direction movement mechanism comprises a horizontal frame, a horizontal shaft, a horizontal spring and a horizontal linear bearing, the horizontal frame is connected with the vertical linear bearing, the horizontal shaft is arranged in the horizontal frame, the horizontal linear bearing is movably arranged on the horizontal shaft, and two ends of the horizontal linear bearing are respectively and elastically connected with the horizontal frame or the horizontal shaft through the horizontal spring, so that the horizontal linear bearing performs horizontal left and right movement according to compression or extension of the horizontal spring.
4. An automatic power take-off device according to claim 3, wherein an upper and a lower spring pressure adjusting nuts for adjusting the supporting forces of the upper and the lower springs are provided at the upper and the lower parts of the vertical shaft, and a horizontal spring pressure adjusting nut for adjusting the supporting forces of the horizontal springs is provided at both ends of the horizontal shaft.
5. The automatic power taking device according to claim 3, wherein the guiding mechanism comprises a guiding frame for installing the power taking device, a vertical direction limiting pulley and a horizontal direction limiting pulley, the guiding frame is connected with the horizontal linear bearing, and the vertical direction limiting pulley and the horizontal direction limiting pulley are rotatably arranged on the guiding frame and are movably connected with the limiting wheel guiding groove respectively, so that the vertical direction limiting pulley and the horizontal direction limiting pulley move along the limiting wheel guiding groove to guide and correct the positions of the current collectors on the guiding frame and the guiding frame.
6. The automatic power taking device according to claim 5, wherein the vertical limiting pulleys are rotatably arranged on two sides of the guide frame, and the horizontal limiting pulleys are rotatably arranged on front and rear ends of the guide frame.
7. The automatic power taking device according to claim 1, wherein the rotating arm is movably connected with the upright post through a first rotating shaft, and the power transmission device fixing frame is connected to the rotating arm through a second rotating shaft.
8. The automatic power take-off device according to claim 1, wherein a boss for installing a supporting spring is provided on the upright.
9. The automatic power taking device according to claim 7, wherein two groups of swing springs connected with the rotating arm are arranged at the top of the power transmission device fixing frame, and the two groups of swing springs are oppositely arranged at two sides of the second rotating shaft so as to limit the left-right swing of the power transmission device fixing frame.
10. The automatic power taking device according to claim 1, wherein the power transmission device fixing frame is internally provided with a through groove which allows the power taking device to pass through and is in contact connection with the power transmission device, and the limit wheel guide groove is arranged below the power transmission device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223247362.XU CN218919431U (en) | 2022-12-05 | 2022-12-05 | Automatic electricity taking device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223247362.XU CN218919431U (en) | 2022-12-05 | 2022-12-05 | Automatic electricity taking device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218919431U true CN218919431U (en) | 2023-04-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223247362.XU Active CN218919431U (en) | 2022-12-05 | 2022-12-05 | Automatic electricity taking device |
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| Country | Link |
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| CN (1) | CN218919431U (en) |
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2022
- 2022-12-05 CN CN202223247362.XU patent/CN218919431U/en active Active
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