CN113043875B - A bank high-voltage charging connecting device for pure electric harbor operation ship - Google Patents
A bank high-voltage charging connecting device for pure electric harbor operation ship Download PDFInfo
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- CN113043875B CN113043875B CN202110261964.1A CN202110261964A CN113043875B CN 113043875 B CN113043875 B CN 113043875B CN 202110261964 A CN202110261964 A CN 202110261964A CN 113043875 B CN113043875 B CN 113043875B
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- charging
- installation box
- bevel gear
- fixed
- rotary drum
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L53/00—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles
- B60L53/30—Constructional details of charging stations
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L53/00—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles
- B60L53/10—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles characterised by the energy transfer between the charging station and the vehicle
- B60L53/14—Conductive energy transfer
- B60L53/16—Connectors, e.g. plugs or sockets, specially adapted for charging electric vehicles
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L53/00—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles
- B60L53/30—Constructional details of charging stations
- B60L53/31—Charging columns specially adapted for electric vehicles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L53/00—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles
- B60L53/30—Constructional details of charging stations
- B60L53/35—Means for automatic or assisted adjustment of the relative position of charging devices and vehicles
- B60L53/36—Means for automatic or assisted adjustment of the relative position of charging devices and vehicles by positioning the vehicle
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L2200/00—Type of vehicles
- B60L2200/32—Waterborne vessels
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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
- Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02T90/10—Technologies relating to charging of electric vehicles
- Y02T90/14—Plug-in electric vehicles
Abstract
The invention relates to a ship bank high-voltage charging connecting device for a pure electric harbor operation ship, which comprises a charging deck, an electric ship and a charging circuit, wherein a charging pile is arranged at the top of a charging splint, a motor installation box is fixed in the charging deck, a servo motor is arranged at the bottom of the inner cavity of the motor installation box, a driving bevel gear is sleeved at the right output end of the servo motor, a connecting rotary drum is horizontally arranged in the inner cavity of the motor installation box, a driven bevel gear is sleeved at one side of the connecting rotary drum close to the servo motor, the driving bevel gear and the driven bevel gear are mutually meshed, a stretching screw rod is sleeved at one end of the connecting rotary drum far away from the servo motor in a screwed manner, a hook installation rod is fixed at one end of the stretching screw rod, which is positioned at the outer side of the motor installation box, and a connecting hook is fixed at one end of the hook installation rod, which is far away from the charging deck, and the invention effectively prevents the electric ship from shaking due to the fluctuating surface in the charging process, causing the charging gun to disengage from the electric vessel during charging.
Description
Technical Field
The invention belongs to the field of electric ship charging, and particularly relates to a shore high-voltage charging connection device for a pure electric harbor operation ship.
Background
An electric boat is a kind of electric vehicle, and is a boat propelled by electric power generated by a battery, a marine generator, or the like. The solar electric ship directly converts sunlight into electric power by virtue of the solar cell on the ship to replace fuel oil to generate power, so that the impact on the environment is reduced, and the energy consumption is reduced. Although most ships use diesel engines, electrically driven ships have been in the past for 120 years. In the beginning of the 1880 s, electric boats were once popular until the 1920 s, the internal combustion engine was replaced. Since the 1970 s energy crisis, in particular, the advent of solar cells, there has been a growing interest in quiet and possibly renewable waterborne power. The first practical solar yacht may be built in the uk in 1975. The first full solar ocean-going vessel worldwide was manufactured by switzerland, while the first solar fleet in asia grew on the sightseeing course of the estuary high school city, taiwan, in 2 months 2010.
The existing electric ship has the defects that in the charging process, the electric ship drives the electric ship body to shake due to fluctuation of the water surface, so that the charging gun is separated from the electric ship in the charging process, and the high-voltage cable or the low-voltage cable is easy to fall off and damage after long-term use.
Disclosure of Invention
The invention aims to overcome the problems in the prior art and provides a shore high-voltage charging connecting device for a pure electric harbor ship.
In order to achieve the technical purpose and achieve the technical effect, the invention is realized by the following technical scheme:
a shore high-voltage charging connecting device for a pure electric harbor operation ship comprises a charging deck, an electric ship and a charging circuit, wherein a charging pile is installed at the top of a charging clamping plate, a motor installation box is fixed inside the charging deck, a servo motor is installed at the bottom of the inner cavity of the motor installation box, a driving bevel gear is sleeved at the right output end of the servo motor, a connection rotary drum is horizontally arranged in the inner cavity of the motor installation box, a driven bevel gear is sleeved at one side, close to the servo motor, of the connection rotary drum, the driving bevel gear and the driven bevel gear are meshed with each other, a stretching screw rod is sleeved at the end, far away from the servo motor, of the connection rotary drum in a screwed manner, a hook installation rod is fixed at one end, far away from the charging deck, of the hook installation rod is fixed with a connection hook, and a fixed hanging ring which is hung in a matched manner with the connection hook is evenly arranged at the bottom of the electric ship, charging pile is last to install charging seat, the rifle that charges, be provided with high pressure head, low pressure head on the rifle that charges respectively.
Preferably, the charging circuit comprises a battery voltage and high voltage display circuit, a trigger control circuit and a power pulse output circuit, wherein the battery voltage and high voltage display circuit is respectively connected with the power pulse output circuit and the charging circuit, and the trigger control circuit is connected with the power pulse output circuit;
preferably, the connecting sliding groove is formed in the bottom of the inner cavity of the motor installation box, the bottom of the end, away from the charging clamping plate, of the stretching screw rod is fixed with an anti-rotation sliding rod, and the other end of the anti-rotation sliding rod penetrates through a side plate at the left end of the motor installation box in a sliding mode.
Preferably, the anti-rotation sliding rod is positioned at one end of the inner cavity of the motor installation box and is fixed with a movable sliding block connected with the connecting sliding groove in a sliding manner.
Preferably, the fixed suspension loops are not less than three groups and are equidistantly distributed on the rear end side plate of the electric ship from top to bottom.
Preferably, the high-pressure head and the low-pressure head are respectively fastened through a high-pressure lock ring, a low-pressure lock ring and a charging seat.
Preferably, a limit stop is fixed in the inner cavity of the connecting drum of the stretching screw rod.
Preferably, the length of the lead screw is longer than the length of the connecting drum.
Preferably, the high-pressure head end is connected with the charging seat through a high-voltage cable filled with fluid for charging.
Preferably, the low head end is connected to the charging socket by a low voltage cable filled with a fluid for charging.
Has the advantages that:
1. the electric ship is driven to the charging deck, the tail of the electric ship faces the charging deck, then a servo motor is started, the servo motor drives a driving bevel gear to rotate, the driving bevel gear and a driven bevel gear are meshed with each other, and further the driven bevel gear drives a connecting rotary drum to rotate;
2. start servo motor reverse rotation, drive coupling and electric ship through tensile screw and draw close to the deck department that charges, charge electric ship through high pressure head or low pressure head on the rifle that charges afterwards, effectively prevent at the in-process that charges, electric ship drives the electric ship body and rocks because the surface of water is undulant, lead to charging the rifle and break away from electric ship at the in-process that charges, long-term use leads to high tension cable or low tension cable to take place to drop and damage easily.
Of course, it is not necessary for any one product that embodies the invention to achieve all of the above advantages simultaneously.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of a charging cradle according to the present invention;
FIG. 3 is a schematic view of the connection of the stretching screw of the present invention;
FIG. 4 is a schematic view showing the fastening of the fixing ring and the connecting hook according to the present invention;
FIG. 5 is a circuit schematic of the present invention;
the reference numbers in the figures are as follows:
1-charging deck, 2-electric ship, 3-charging pile, 4-motor installation box, 5-servo motor, 6-driving bevel gear, 7-connection rotary drum, 8-driven bevel gear, 9-stretching screw, 10-hook installation rod, 11-connection hook, 12-fixed hanging ring, 13-charging seat, 14-charging gun, 15-high pressure head, 16-low pressure head, 17-high voltage cable, 18-low voltage cable, 19-connection chute, 20-anti-rotation slide rod, 21-moving slide block, 22-high voltage lock ring, 23-low voltage lock ring and 24-limit stop block.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in figures 1-5, the invention relates to a shore high-voltage charging connecting device for a pure electric harbor operation ship, which comprises a charging deck 1, an electric ship 2 and a charging circuit, wherein the top of a charging splint is provided with a charging pile 3, the charging deck 1 is internally fixed with a motor installation box 4, the bottom of the inner cavity of the motor installation box 4 is provided with a servo motor 5, the output end of the right side of the servo motor 5 is sleeved with a driving bevel gear 6, the inner cavity of the motor installation box 4 is horizontally provided with a connecting rotary drum 7, one side of the connecting rotary drum 7 close to the servo motor 5 is sleeved with a driven bevel gear 8, the driving bevel gear 6 is meshed with the driven bevel gear 8, one end of the connecting rotary drum 7 far away from the servo motor 5 is screwed and sleeved with a stretching screw rod 9, one end of the stretching screw rod 9 positioned at the outer side of the motor installation box 4 is fixed with a hook installation rod 10, one end of the hook installation rod 10 far away from the charging deck 1 is fixed with a connecting hook 11, the bottom of the electric ship 2 is uniformly provided with a fixed hanging ring 12 which is hung and connected with the connecting hook 11 in a matching way, the charging pile 3 is provided with a charging seat 13 and a charging gun 14, and the charging gun 14 is respectively provided with a high voltage head 15 and a low voltage head 16.
Wherein, the charging circuit comprises a battery voltage and high voltage display circuit, a trigger control circuit and a power pulse output circuit, the battery voltage and high voltage display circuit is respectively connected with the power pulse output circuit and the charging circuit, the trigger control circuit is connected with the power pulse output circuit, the bottom of the inner cavity of the motor installation box 4 is provided with a connecting chute 19, the bottom of one end of the stretching screw 9 far away from the charging clamp plate is fixed with an anti-rotation slide bar 20, the other end of the anti-rotation slide bar 20 is glidingly penetrated through the left end side plate of the motor installation box 4, the anti-rotation slide bar 20 is positioned at one end of the inner cavity of the motor installation box 4 and is fixed with a movable slide block 21 glidingly connected with the connecting chute 19, the fixed hanging rings 12 are not less than three groups and are equidistantly distributed on the rear end side plate of the electric ship 2 from top to bottom, the high pressure head 15 and the low pressure head 16 are respectively fastened through a high pressure lock ring 22, a low pressure lock ring 23 and a charging seat 13, the stretching screw 9 is positioned at the inner cavity of the connecting rotary cylinder 7 and is fixed with a limit stop block 24, the length of the stretching screw 9 is longer than that of the connecting rotary drum 7, the end of the high pressure head 15 is communicated with the charging seat 13 through a high voltage cable 17 for injecting fluid for charging, and the end of the low pressure head 16 is communicated with the charging seat 13 through a low voltage cable 18 for injecting fluid for charging.
One specific application of this embodiment is: when the ship bank high-voltage charging connecting device for the pure electric harbor operation ship is used, firstly, an electric ship 2 is driven to a charging deck 1, the tail part of the electric ship 2 faces the charging deck, then a servo motor 5 is started, the servo motor 5 drives a driving bevel gear 6 to rotate, the driving bevel gear 6 is meshed with a driven bevel gear 8, a connecting rotary drum 7 is driven to rotate through the driven bevel gear 8, an extension screw 9 is sleeved on one side of the connecting rotary drum 7, far away from the servo motor 5, and the connecting hook 11 is driven to move towards the electric ship 2 through the extension screw 9 until the connecting hook moves to a fixed hanging ring 12 of the electric ship 2, the position of the electric ship 2 is adjusted, the connecting hook 11 and the fixed hanging ring 12 are hung and fastened with each other, the servo motor 5 is started to rotate reversely, the connecting hook 11 and the electric ship 2 are driven to approach to the charging deck 1 through the extension screw 9, follow through the high pressure head 15 or the low pressure head 16 on the rifle 14 that charges to electric ship, effectively prevent at the charging process, electric ship 2 is because the surface of water is undulant, drives electric ship 2 bodies and rocks, leads to the rifle 14 that charges to break away from electric ship 2 at the in-process that charges, and long-term use leads to high tension cable 17 or low tension cable 18 to take place to drop and damage easily.
In the description herein, references to the description of "one embodiment," "an example," "a specific example," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The preferred embodiments of the invention disclosed above are intended to be illustrative only. The preferred embodiments have not been described in detail to avoid obscuring the description of the invention in its specific form, and it is to be understood that many modifications and variations are possible in light of the teaching of this specification. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best utilize the invention. The invention is limited only by the claims and their full scope and equivalents.
Claims (1)
1. A shore high-voltage charging connecting device for a pure electric harbor operation ship comprises a charging deck (1), an electric ship (2) and a charging circuit, and is characterized in that a charging pile (3) is installed at the top of a charging clamp plate, a motor installation box (4) is fixed inside the charging deck (1), a servo motor (5) is installed at the bottom of an inner cavity of the motor installation box (4), a driving bevel gear (6) is sleeved at the right output end of the servo motor (5), a connection rotary drum (7) is horizontally arranged in the inner cavity of the motor installation box (4), a driven bevel gear (8) is sleeved on one side, close to the servo motor (5), of the connection rotary drum (7), the driving bevel gear (6) and the driven bevel gear (8) are meshed with each other, a stretching screw rod (9) is sleeved at one end, far away from the servo motor (5), of the connection rotary drum (7), a hook mounting rod (10) is fixed at one end of the stretching screw (9) which is positioned at the outer side of the motor mounting box (4), a connecting hook (11) is fixed at one end of the hook mounting rod (10) which is far away from the charging deck (1), fixed hanging rings (12) which are matched and hung with the connecting hook (11) are uniformly arranged at the bottom of the electric ship (2), a charging seat (13) and a charging gun (14) are installed on the charging pile (3), and a high-pressure head (15) and a low-pressure head (16) are respectively arranged on the charging gun (14); the charging circuit comprises a battery voltage and high voltage display circuit, a trigger control circuit and a power pulse output circuit, wherein the battery voltage and high voltage display circuit is respectively connected with the power pulse output circuit and the charging circuit, and the trigger control circuit is connected with the power pulse output circuit; a connecting sliding groove (19) is formed in the bottom of the inner cavity of the motor installation box (4), an anti-rotation sliding rod (20) is fixed at the bottom of one end, away from the charging clamping plate, of the stretching screw (9), and the other end of the anti-rotation sliding rod (20) penetrates through a side plate at the left end of the motor installation box (4) in a sliding mode; one end of the anti-rotation sliding rod (20) positioned in the inner cavity of the motor installation box (4) is fixedly provided with a movable sliding block (2l) which is in sliding connection with the connecting sliding groove (19); the number of the fixed hanging rings (12) is not less than three, and the fixed hanging rings are equidistantly distributed on the side plate of the rear end of the electric ship (2) from top to bottom; the high-pressure head (15) and the low-pressure head (16) are respectively fastened through a high-pressure lock ring (22), a low-pressure lock ring (23) and a charging seat (13); the stretching screw (9) is positioned in the inner cavity of the connecting rotary drum (7), a limit stop (24) is fixed on the stretching screw (9), and the length of the stretching screw (9) is longer than that of the connecting rotary drum (7); the tail end of the high-voltage head (15) is communicated with a charging seat (13) through a high-voltage cable (17) filled with fluid for charging; the end of the low pressure head (16) is communicated with the charging seat (13) through a low-voltage cable (18) filled with fluid for charging.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110261964.1A CN113043875B (en) | 2021-03-10 | 2021-03-10 | A bank high-voltage charging connecting device for pure electric harbor operation ship |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110261964.1A CN113043875B (en) | 2021-03-10 | 2021-03-10 | A bank high-voltage charging connecting device for pure electric harbor operation ship |
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| Publication Number | Publication Date |
|---|---|
| CN113043875A CN113043875A (en) | 2021-06-29 |
| CN113043875B true CN113043875B (en) | 2022-06-21 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202110261964.1A Active CN113043875B (en) | 2021-03-10 | 2021-03-10 | A bank high-voltage charging connecting device for pure electric harbor operation ship |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105691220A (en) * | 2015-12-17 | 2016-06-22 | 云杉智慧新能源技术有限公司 | Charging connecting device |
| WO2016127901A1 (en) * | 2015-02-13 | 2016-08-18 | 宁波精成车业有限公司 | Dual-clutch skid device for mirror driver of automobile rearview mirror |
| CN106192885A (en) * | 2016-09-08 | 2016-12-07 | 无锡同春新能源科技有限公司 | A kind of electric ship harbour of band charging pile |
| CN108501758A (en) * | 2018-05-10 | 2018-09-07 | 杭州快电新能源科技有限公司 | A kind of DC charging stationary point for stablizing output |
| CN208538422U (en) * | 2018-08-13 | 2019-02-22 | 天津凯景康科技有限公司 | A kind of intelligence window bus stop board |
| CN208680062U (en) * | 2018-12-21 | 2019-04-02 | 四川中喻环境治理有限公司 | A kind of municipal wastewater pipeline inner wall cleaning equipment |
| CN210655482U (en) * | 2019-06-14 | 2020-06-02 | 东莞市绿森林包装材料有限公司 | Winding and unwinding mechanism of coating machine for acrylic protective film production |
-
2021
- 2021-03-10 CN CN202110261964.1A patent/CN113043875B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016127901A1 (en) * | 2015-02-13 | 2016-08-18 | 宁波精成车业有限公司 | Dual-clutch skid device for mirror driver of automobile rearview mirror |
| CN105691220A (en) * | 2015-12-17 | 2016-06-22 | 云杉智慧新能源技术有限公司 | Charging connecting device |
| CN106192885A (en) * | 2016-09-08 | 2016-12-07 | 无锡同春新能源科技有限公司 | A kind of electric ship harbour of band charging pile |
| CN108501758A (en) * | 2018-05-10 | 2018-09-07 | 杭州快电新能源科技有限公司 | A kind of DC charging stationary point for stablizing output |
| CN208538422U (en) * | 2018-08-13 | 2019-02-22 | 天津凯景康科技有限公司 | A kind of intelligence window bus stop board |
| CN208680062U (en) * | 2018-12-21 | 2019-04-02 | 四川中喻环境治理有限公司 | A kind of municipal wastewater pipeline inner wall cleaning equipment |
| CN210655482U (en) * | 2019-06-14 | 2020-06-02 | 东莞市绿森林包装材料有限公司 | Winding and unwinding mechanism of coating machine for acrylic protective film production |
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| CN113043875A (en) | 2021-06-29 |
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