CN219989192U - Electric vehicle battery replacement station battery cleaning and deicing air drying device - Google Patents

Electric vehicle battery replacement station battery cleaning and deicing air drying device Download PDF

Info

Publication number
CN219989192U
CN219989192U CN202321644506.7U CN202321644506U CN219989192U CN 219989192 U CN219989192 U CN 219989192U CN 202321644506 U CN202321644506 U CN 202321644506U CN 219989192 U CN219989192 U CN 219989192U
Authority
CN
China
Prior art keywords
translation
battery
deicing
air
air drying
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
CN202321644506.7U
Other languages
Chinese (zh)
Inventor
顾玉平
景国庆
宋建飞
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Opw Petroleum Equipment Suzhou Co ltd
Original Assignee
Opw Petroleum Equipment Suzhou Co ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Opw Petroleum Equipment Suzhou Co ltd filed Critical Opw Petroleum Equipment Suzhou Co ltd
Priority to CN202321644506.7U priority Critical patent/CN219989192U/en
Application granted granted Critical
Publication of CN219989192U publication Critical patent/CN219989192U/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02TCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00Road transport of goods or passengers
    • Y02T10/60Other road transportation technologies with climate change mitigation effect
    • Y02T10/70Energy storage systems for electromobility, e.g. batteries
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02TCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00Road transport of goods or passengers
    • Y02T10/60Other road transportation technologies with climate change mitigation effect
    • Y02T10/7072Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors

Landscapes

  • Cleaning In General (AREA)

Abstract

The utility model relates to a battery cleaning and deicing air drying device of an electric vehicle battery replacement station, which is arranged in a foundation groove of a car washing room and comprises the following components: the translation mechanism comprises a translation conveying mechanism I and a translation conveying mechanism II, and the translation conveying mechanism I is arranged on the upper side of the translation conveying mechanism II; the high-pressure deicing flushing mechanism comprises a plug pump, a high-pressure hose and a plurality of high-pressure nozzles; the high-pressure nozzle is respectively arranged on the first translational conveying mechanism and the second translational conveying mechanism, and the water outlet of the plug pump is connected with the high-pressure nozzle through a high-pressure hose; the rotary air drying mechanism is arranged at one side of the high-pressure deicing washing mechanism, the rotary air drying mechanism comprises a centrifugal fan and a rotary air knife assembly, and an air outlet of the centrifugal fan is connected with the rotary air knife assembly through a telescopic pipeline; the utility model solves the problem that the battery of the north battery replacement station cannot be disassembled due to freezing, ensures the cleanness and the cleanliness before the battery replacement and the no water on the surface of the battery, and avoids the pollution risk of the battery charging room of the battery replacement station and the water short-circuit risk on the surface of the battery.

Description

Electric vehicle battery replacement station battery cleaning and deicing air drying device
Technical Field
The utility model relates to the technical field of battery replacement, in particular to a battery cleaning and deicing air drying device for an electric vehicle battery replacement station.
Background
With the continuous popularization of new energy automobiles, the electric automobile power conversion is an important technical problem to be solved in the electric automobile industry. At present, the existing electric vehicle battery replacement station has no cleaning device before battery replacement, and the lower part of the battery is dirty, so that the battery needs to be specially cleaned before battery replacement, the bottom of the battery needs to be cleaned and dried after cleaning, the battery is kept clean and then recharged, and the pollution risk of a battery charging room of the battery replacement station and the water short-circuit risk on the surface of the battery are avoided; however, for north, the temperature is lower in winter, and the screw is frozen when the battery bottom trades the electricity, appears trading the problem that the screw can't be dismantled to the electric sleeve.
Disclosure of Invention
The utility model solves the problem that the battery of the north battery replacement station cannot be disassembled due to freezing by providing the battery cleaning and deicing air drying device of the battery replacement station of the electric vehicle, ensures that the battery is clean and tidy before replacement and the surface of the battery is free from water, and avoids the pollution risk of a battery charging room of the battery replacement station and the risk of water short circuit on the surface of the battery.
In order to solve the technical problems, the utility model provides a battery cleaning and deicing air drying device for an electric vehicle battery replacement station, which is arranged in a foundation groove of a car washing room and comprises the following components: the translation mechanism comprises a first translation conveying mechanism and a second translation conveying mechanism, and the first translation conveying mechanism is arranged on the upper side of the second translation conveying mechanism;
the high-pressure deicing flushing mechanism comprises a plug pump, a high-pressure hose and a plurality of high-pressure nozzles; the high-pressure nozzle is respectively arranged on the first translational conveying mechanism and the second translational conveying mechanism, and the water outlet of the plug pump is connected with the high-pressure nozzle through a high-pressure hose;
the rotary air drying mechanism is arranged on one side of the high-pressure deicing flushing mechanism and comprises a centrifugal fan and a rotary air knife assembly, and an air outlet of the centrifugal fan is connected with the rotary air knife assembly through a telescopic pipeline.
In one embodiment of the utility model, the rotary air knife assembly comprises a support frame, an air knife and a rotary driving mechanism, wherein two ends of the air knife are arranged on the support frame through rotary shafts and are controlled by the rotary driving mechanism to realize rotation.
In one embodiment of the utility model, the air knife comprises a shell, a plurality of air outlets are arranged on the outer wall of the shell, an air cavity is arranged in the shell in a penetrating manner, and the air outlets of the centrifugal fan are communicated with the air inlets of the air cavity through telescopic pipelines.
In one embodiment of the utility model, the rotary driving mechanism comprises a pushing cylinder and a swinging rod, wherein the pushing cylinder is obliquely arranged in the foundation groove, a telescopic rod of the pushing cylinder is rotatably connected with one end of the swinging rod, and the other end of the swinging rod is connected with the rotary shaft.
In one embodiment of the present utility model, the first translation conveying mechanism includes a first translation rail and a second translation rail, the first translation rail is disposed inside the second translation rail, the first translation rail is slidably disposed on the first translation rail, the second translation rail is slidably disposed on the second translation rail, and the first translation frame is disposed on an upper side of the second translation frame, and the first translation frame and the second translation frame are driven by a translation cylinder to move forward and backward, respectively.
In one embodiment of the utility model, the first translation track and the second translation track both comprise a mounting fixing plate and a triangular sliding rail, and the triangular sliding rail is fixedly arranged in the foundation groove through the mounting fixing plate.
In one embodiment of the utility model, pulleys are arranged at the bottoms of the first translation frame and the second translation frame, and limit grooves matched with the triangular slide rails are arranged on the pulleys.
In one embodiment of the present utility model, the first translating frame has a size greater than a size of the second translating frame.
In one embodiment of the utility model, the first translation frame is provided with a positioning sensor for sensing a battery removal screw.
In one embodiment of the utility model, a protective net is further arranged above the foundation groove.
Compared with the prior art, the technical scheme of the utility model has at least the following advantages:
according to the battery cleaning and deicing air drying device for the electric vehicle battery replacement station, the translation mechanism is adopted to send the high-pressure nozzle into the bottom of the battery, the high-pressure nozzle is matched with the plunger pump to generate high-pressure water to impact and remove ice layers on the surface of the battery dismounting screw, after flushing, the battery and the screw surface are air-dried by the rotary air drying mechanism, the clean and tidy battery before battery replacement and the water-free battery surface are ensured, the pollution risk of a battery charging room of the battery replacement station and the water short circuit risk on the battery surface are avoided, the problem that the screw freezes the battery replacement sleeve is effectively solved, the problem that the battery of the electric vehicle battery replacement station in the north cannot be dismounted is further solved, the battery replacement rate is greatly improved, and queuing waiting is reduced.
Drawings
In order that the utility model may be more readily understood, a more particular description of the utility model will be rendered by reference to specific embodiments thereof that are illustrated in the appended drawings, in which
FIG. 1 is a schematic perspective view showing a battery cleaning and deicing air drying apparatus according to a preferred embodiment of the present utility model;
FIG. 2 is a schematic top view of the battery cleaning and de-icing air-drying apparatus shown in FIG. 1;
FIG. 3 is a schematic view of a rotary air drying mechanism of the battery cleaning and deicing air drying device shown in FIG. 1;
FIG. 4 is a schematic view showing a structure in which a battery cleaning and deicing air-drying apparatus is installed in a recess of a foundation according to a preferred embodiment of the present utility model;
FIG. 5 is a schematic view of the structure of the guard net of FIG. 4;
description of the specification reference numerals: 1. a translation mechanism; 11. a translation conveying mechanism I; 111. translating the first track; 111a, a fixing plate; 11b, triangular slide rails; 112. translating the first frame; 12. a translation conveying mechanism II; 121. translating the second track; 122. translational frame II; 123. a pulley; 13. a translation cylinder; 14. positioning a sensor; 2. a high pressure deicing flushing mechanism; 21. a plug pump; 22. a high pressure hose; 23. a high pressure nozzle; 3. rotating an air drying mechanism; 31. a centrifugal fan; 32. a rotary air knife assembly; 321. a support frame; 322. an air knife; 323. a rotary driving mechanism; 3231. a pushing cylinder; 3232. swing rod; 324. a rotation shaft; 325. an air outlet; 33. and (5) a telescopic pipeline.
Detailed Description
The present utility model will be further described with reference to the accompanying drawings and specific examples, which are not intended to be limiting, so that those skilled in the art will better understand the utility model and practice it.
According to the battery cleaning and deicing air drying device for the electric vehicle power exchange station, the translation mechanism 1 is adopted to convey the high-pressure nozzle 23 to the bottom of the battery, the high-pressure nozzle 23 is matched with the plunger pump 21 to generate high-pressure water to impact and remove ice layers on the surface of the battery disassembling screw, the high-pressure nozzle 23 is driven by the translation mechanism 1 to clean the battery back and forth, after the flushing is finished, the rotary air drying mechanism 3 is used to dry the battery, air-dry the battery and the surface of the screw, and the problems that hidden danger of water is caused after the battery is cleaned and the battery of the northern power exchange station is frozen and cannot be disassembled are solved.
In order to better understand the above technical solutions, the following detailed description will refer to the accompanying drawings and specific embodiments.
Example 1
Referring to fig. 1, 2 and 4, the battery cleaning and deicing air drying device for an electric vehicle battery replacement station of the present utility model is installed in a foundation groove of a car washing room, and comprises:
the translation mechanism 1 comprises a first translation conveying mechanism 11 and a second translation conveying mechanism 12, and the first translation conveying mechanism 11 is arranged on the upper side of the second translation conveying mechanism 12;
the high-pressure deicing flushing mechanism 2 comprises a plug pump 21, a high-pressure hose 22 and a plurality of high-pressure nozzles 23; the high-pressure nozzle 23 is respectively arranged on the first translation conveying mechanism 11 and the second translation conveying mechanism 12, and the water outlet of the plug pump 21 is connected with the high-pressure nozzle 23 through a high-pressure hose 22; the water inlet of the plunger pump 21 is communicated with a water inlet pipe of a car washer in the car washing room, the plunger pump 21 is connected with a high-pressure nozzle 23 through a high-pressure hose 22 to generate 75 kg pressure, and the high-pressure nozzle 23 carries out high-pressure flushing on the bottom of the battery and the screw disassembling part.
The rotary air drying mechanism 3 is arranged on one side of the high-pressure deicing washing mechanism 2, the rotary air drying mechanism 3 comprises a centrifugal fan 31 and a rotary air knife assembly 32, and an air outlet of the centrifugal fan 31 is connected with the rotary air knife assembly 32 through a telescopic pipeline 33.
The first translation conveying mechanism 11 comprises a first translation track 111 and a first translation frame 112, the second translation conveying mechanism 12 comprises a second translation track 121 and a second translation frame 122, the first translation track 111 is arranged on the inner side of the second translation track 121, the first translation frame 112 is arranged on the first translation track 111 in a sliding mode, the second translation frame 122 is arranged on the second translation track 121 in a sliding mode, the first translation frame 112 is located on the upper side of the second translation frame 122, the first translation frame 112 and the second translation frame 122 are driven by a translation cylinder 13 to achieve forward and backward movement respectively, the translation cylinder is connected to a three-position five-way valve, and the three-position five-way valve is controlled by a PLC to achieve starting or closing of the cylinder. The first translation frame 112 is provided with a positioning sensor 14 for sensing a battery disassembling screw, when the electric vehicle enters the upper part of a foundation of a car washing room, the first translation frame 112 and the second translation frame 122 are pushed by the translation cylinder 13 to move, the positioning sensor 113 can automatically identify the position of the battery disassembling screw, when the positioning sensor 14 senses the battery disassembling screw, a signal is transmitted to a PLC controller, the PLC controller controls the translation cylinder 13 to automatically stop moving, the plunger pump 21 is started, the high-pressure nozzle 23 impacts the disassembling screw with high-pressure water to remove surface floating ice, and after a period of flushing, the first translation conveying mechanism 11 and the second translation conveying mechanism 12 reciprocate back and forth along the battery to further clean the bottom of the battery.
Preferably, the first translation rail 111 and the second translation rail 121 each include a mounting fixing plate 11a and a triangular slide rail 11b, and the triangular slide rail 11b is fixedly disposed in the foundation groove through the mounting fixing plate 11 a. The bottom of the first translation frame 112 and the second translation frame 122 are respectively provided with a pulley 123, and the pulleys 123 are provided with limiting grooves matched with the triangular slide rails 11 b. The pulley 123 and the triangular slide rail 11b are designed so that the first 112 and second 122 translational conveying frames can slide smoothly in the moving process without shifting.
The size of the first translation frame 112 is larger than the size of the second translation frame 122 in this embodiment. The second translation frame 122 is slidably disposed at the inner side of the bottom of the first translation frame 112, and the two frames are matched with each other to realize full coverage of the to-be-cleaned range of the bottom of the battery, so that each position of the bottom of the battery can be cleaned in place.
As shown in fig. 3, the rotary air knife assembly 32 includes a support frame 321, an air knife 322, and a rotary driving mechanism 323, wherein two ends of the air knife 322 are mounted on the support frame 321 through a rotary shaft 324, and are controlled by the rotary driving mechanism 323 to rotate. The air knife 322 comprises a shell, a plurality of air outlets 325 are arranged on the outer wall of the shell, an air cavity is arranged in the shell in a penetrating manner, and the air outlets of the centrifugal fans 31 are communicated with the air inlets of the air cavity through telescopic pipelines 33. After the battery is washed, the centrifugal fan 31 is started, air is pressurized to generate pressure, the rotary driving mechanism 323 drives the fan to rotate 45 degrees, high-pressure air sprayed out of the air outlet on the air knife 322 is used for airing the bottom of the battery, after the battery is dried, the centrifugal fan 31 stops working, the air knife 322 rotates 45 degrees to enable the air to return to the original position, and water is prevented from flowing into the air knife 322.
The rotary driving mechanism 323 in this embodiment includes a pushing cylinder 3231 and a swing rod 3232, the pushing cylinder 3231 is obliquely disposed in the foundation recess, a telescopic rod of the pushing cylinder 3231 is rotatably connected with one end of the swing rod 3232, and the other end of the swing rod 3232 is connected with the rotary shaft 324. When the telescopic rod of the pushing cylinder 3231 is pushed out, the swing rod 3232 is driven by the telescopic rod to control the air knife 322 to rotate 45 degrees, so that an air outlet 325 on the air knife 322 faces the bottom of the battery to realize air drying treatment; when the telescopic rod of the pushing cylinder 3231 is retracted, the air knife rotates for 45 degrees to retract to the original position, so that the air outlet 325 on the air knife 322 faces downwards, and water is effectively prevented from flowing into the air cavity of the air knife 322 from the air outlet 325.
As shown in fig. 5, a protection net 4 is further disposed above the foundation pit in this embodiment. The protection network 4 can protect the battery cleaning and deicing air drying device in the foundation groove from being crushed, and when the battery needs to be cleaned, the electric vehicle is parked on the protection network above the foundation to be cleaned and deicing.
The technical scheme provided by the embodiment of the utility model at least has the following technical effects or advantages:
the battery cleaning and deicing air drying device is installed on a reserved car washing foundation of a power exchange station, and a signal wire is connected to a car washer control system after the installation to realize linkage control; after the automobile enters the protective net above the foundation groove, the translation mechanism 1 drives the high-pressure nozzle 23 to reciprocate at the bottom of the battery, the battery is fully cleaned and air-dried before the battery is replaced, the battery is kept clean and tidy before the battery is replaced, the surface of the battery is free from water, and the pollution risk of a battery charging room of a battery replacement station and the water short-circuit risk on the surface of the battery are avoided; the problem that the battery of the north battery replacement station cannot be disassembled due to freezing is solved, the battery replacement rate is greatly improved, and queuing waiting is reduced.
It is apparent that the above examples are given by way of illustration only and are not limiting of the embodiments. Other variations and modifications of the present utility model will be apparent to those of ordinary skill in the art in light of the foregoing description. It is not necessary here nor is it exhaustive of all embodiments. And obvious variations or modifications thereof are contemplated as falling within the scope of the present utility model.

Claims (10)

1. Electric motor car trades power station battery and washs and ice-off air-dries device, installs in the foundation recess in car wash, its characterized in that: comprising the following steps:
the translation mechanism comprises a first translation conveying mechanism and a second translation conveying mechanism, and the first translation conveying mechanism is arranged on the upper side of the second translation conveying mechanism;
the high-pressure deicing flushing mechanism comprises a plug pump, a high-pressure hose and a plurality of high-pressure nozzles; the high-pressure nozzle is respectively arranged on the first translation conveying mechanism and the second translation conveying mechanism, and the water outlet of the plug pump is connected with the high-pressure nozzle through the high-pressure hose;
the rotary air drying mechanism is arranged on one side of the high-pressure deicing flushing mechanism and comprises a centrifugal fan and a rotary air knife assembly, and an air outlet of the centrifugal fan is connected with the rotary air knife assembly through a telescopic pipeline.
2. The electric vehicle battery replacement station battery cleaning and deicing air drying device according to claim 1, wherein the device is characterized in that: the rotary air knife assembly comprises a support frame, an air knife and a rotary driving mechanism, wherein two ends of the air knife are installed on the support frame through rotary shafts and are controlled by the rotary driving mechanism to realize rotation.
3. The electric vehicle battery replacement station battery cleaning and deicing air drying device according to claim 2, wherein: the air knife comprises a shell, a plurality of air outlets are formed in the outer wall of the shell, an air cavity is formed in the shell in a penetrating mode, and the air outlets of the centrifugal fans are communicated with the air inlets of the air cavity through telescopic pipelines.
4. The electric vehicle battery replacement station battery cleaning and deicing air drying device according to claim 3, wherein: the rotary driving mechanism comprises a pushing cylinder and a swinging rod, wherein the pushing cylinder is obliquely arranged in the foundation groove, a telescopic rod of the pushing cylinder is rotationally connected with one end of the swinging rod, and the other end of the swinging rod is connected with the rotary shaft.
5. The electric vehicle battery replacement station battery cleaning and deicing air drying device according to claim 1, wherein the device is characterized in that: the first translation conveying mechanism comprises a first translation track and a second translation track, the first translation track is arranged on the inner side of the second translation track, the first translation track is arranged on the first translation track in a sliding mode, the second translation track is arranged on the second translation track in a sliding mode, the first translation frame is located on the upper side of the second translation frame, and the first translation frame and the second translation frame are driven by a translation cylinder to move forwards and backwards respectively.
6. The electric vehicle battery replacement station battery cleaning and deicing air drying device according to claim 5, wherein: the first translation track and the second translation track respectively comprise an installation fixing plate and a triangular sliding rail, and the triangular sliding rail is fixedly arranged on a supporting block in the foundation groove through the installation fixing plate.
7. The electric vehicle battery replacement station battery cleaning and deicing air drying device according to claim 6, wherein: pulleys are arranged at the bottoms of the first translation frame and the second translation frame, and limit grooves matched with the triangular slide rails are formed in the pulleys.
8. The electric vehicle battery replacement station battery cleaning and deicing air drying device according to claim 7, wherein: the size of the first translation frame is larger than that of the second translation frame.
9. The electric vehicle battery replacement station battery cleaning and deicing air drying device according to claim 8, wherein: and a positioning sensor for sensing a battery dismounting screw is arranged on the translation frame I.
10. The electric vehicle battery replacement station battery cleaning and deicing air drying device according to claim 1, wherein the device is characterized in that: and a protective net is further arranged above the foundation groove.
CN202321644506.7U 2023-06-27 2023-06-27 Electric vehicle battery replacement station battery cleaning and deicing air drying device Active CN219989192U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202321644506.7U CN219989192U (en) 2023-06-27 2023-06-27 Electric vehicle battery replacement station battery cleaning and deicing air drying device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202321644506.7U CN219989192U (en) 2023-06-27 2023-06-27 Electric vehicle battery replacement station battery cleaning and deicing air drying device

Publications (1)

Publication Number Publication Date
CN219989192U true CN219989192U (en) 2023-11-10

Family

ID=88615427

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202321644506.7U Active CN219989192U (en) 2023-06-27 2023-06-27 Electric vehicle battery replacement station battery cleaning and deicing air drying device

Country Status (1)

Country Link
CN (1) CN219989192U (en)

Similar Documents

Publication Publication Date Title
CN105834147B (en) The cleaning method and its device of Substation Insulator
CN204527150U (en) Air-dry non-contact vehicle washing machine
CN215278846U (en) Aluminum alloy cable surface stain cleaning device
CN109281485A (en) A kind of construction and decoration metope finishing coat removing device
CN115037241A (en) Automatic cleaning system for photovoltaic module
CN219989192U (en) Electric vehicle battery replacement station battery cleaning and deicing air drying device
CN116624406A (en) Axial-flow type energy-saving ventilator
CN219824863U (en) Scribing device for road construction
CN112671331A (en) Solar power generation panel cleaning device and cleaning method suitable for western region
CN208513150U (en) A kind of solar photovoltaic assembly surface cleaning apparatus
CN116424275A (en) Reciprocating bus car washing equipment with air drying function and car washing method
CN216323685U (en) Electrified belt cleaning device with environment monitoring function
CN209222946U (en) Cooling device is used in a kind of production of bellows
CN111203416A (en) Be used for self-propelled GIL, GIS casing inner chamber belt cleaning device
CN113619533B (en) Automatic car cleaning device with drying function
CN218141441U (en) Water spraying device for constructional engineering
CN220371722U (en) Cleaning box for insulating equipment
CN217455933U (en) Gantry arm car washing device
CN216102035U (en) Automobile washing device with heating function
CN219857087U (en) Cleaning and drying device for car washer
CN205131208U (en) Wheel washs subassembly
CN218958284U (en) A inside dust removal mechanism for switch board
CN214289556U (en) Cleaning equipment for remanufacturing automobile parts
CN220043353U (en) Energy-saving building roof
CN215424447U (en) Outer wall cleaning device for building construction

Legal Events

Date Code Title Description
GR01 Patent grant
GR01 Patent grant