CN113068343A - Wireless waterproof solar piece satellite positioning navigation device for operation ship - Google Patents

Wireless waterproof solar piece satellite positioning navigation device for operation ship Download PDF

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Publication number
CN113068343A
CN113068343A CN202110299472.1A CN202110299472A CN113068343A CN 113068343 A CN113068343 A CN 113068343A CN 202110299472 A CN202110299472 A CN 202110299472A CN 113068343 A CN113068343 A CN 113068343A
Authority
CN
China
Prior art keywords
upper cover
lower cover
cover
satellite positioning
solar energy
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.)
Pending
Application number
CN202110299472.1A
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Chinese (zh)
Inventor
褚云峰
宗永刚
毕艳亮
赵贤东
王桂艳
陆宝成
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.)
Binzhou Polytechnic
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Binzhou Polytechnic
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 Binzhou Polytechnic filed Critical Binzhou Polytechnic
Priority to CN202110299472.1A priority Critical patent/CN113068343A/en
Publication of CN113068343A publication Critical patent/CN113068343A/en
Pending legal-status Critical Current

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    • HELECTRICITY
    • H05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05KPRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K5/00Casings, cabinets or drawers for electric apparatus
    • H05K5/02Details
    • H05K5/0217Mechanical details of casings
    • H05K5/0226Hinges
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01SRADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S19/00Satellite radio beacon positioning systems; Determining position, velocity or attitude using signals transmitted by such systems
    • G01S19/01Satellite radio beacon positioning systems transmitting time-stamped messages, e.g. GPS [Global Positioning System], GLONASS [Global Orbiting Navigation Satellite System] or GALILEO
    • G01S19/13Receivers
    • G01S19/14Receivers specially adapted for specific applications
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02JCIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/34Parallel operation in networks using both storage and other dc sources, e.g. providing buffering
    • H02J7/35Parallel operation in networks using both storage and other dc sources, e.g. providing buffering with light sensitive cells
    • HELECTRICITY
    • H05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05KPRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K5/00Casings, cabinets or drawers for electric apparatus
    • H05K5/0004Casings, cabinets or drawers for electric apparatus comprising several parts forming a closed casing
    • HELECTRICITY
    • H05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05KPRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K5/00Casings, cabinets or drawers for electric apparatus
    • H05K5/02Details
    • H05K5/0217Mechanical details of casings

Abstract

The invention discloses a satellite positioning navigation device for a wireless waterproof solar piece of an operation ship, which comprises a bottom plate, wherein a lower cover is fixed at the upper end of the bottom plate, an upper cover is arranged at the top of the lower cover, one side of the upper cover is rotatably connected on the side wall of the lower cover through a hinge, a connecting mechanism connected with the lower cover is arranged at the other side of the upper cover, a solar piece is arranged at the top of the upper cover, a protection mechanism used for protecting the solar piece is arranged at the top of the upper cover, sealing strips are arranged on the outer wall of the lower cover and the inner wall of the upper cover, a sealing mechanism used for being in sealing connection with the lower cover is arranged on the upper cover, a data processing device is arranged on the inner side of the lower cover, and positioning mechanisms are connected at four corners of the data processing device. The invention can ensure good sealing effect, has better waterproof performance, is more suitable for being used on ships, is convenient to disassemble and assemble, is convenient to maintain or overhaul internal devices, and is more convenient to use.

Description

Wireless waterproof solar piece satellite positioning navigation device for operation ship
Technical Field
The invention relates to the technical field of ship navigation equipment, in particular to a satellite positioning navigation device for a wireless waterproof solar energy piece of an operation ship.
Background
The marine portable satellite positioning device is the portable equipment like the cell-phone, must charge before using at every turn, and if frequently send ship positioning information, the stand-by time of equipment is very limited, if the operation boats and ships can't return to the port on time under extreme weather, marine portable satellite positioning device can not guarantee that use at every turn can all normally work, and the sealed effect of current marine portable satellite positioning device is ideal inadequately, waterproof performance is good inadequately, be difficult to satisfy the needs that use on the boats and ships, install simultaneously, it is convenient inadequately to dismantle, make it comparatively difficult to maintain or overhaul its inside device, it is inconvenient.
Therefore, a satellite positioning and navigation device for a wireless waterproof solar device of a working ship is provided.
Disclosure of Invention
The invention aims to solve the defects in the prior art, and provides a wireless waterproof solar piece satellite positioning navigation device for a working ship.
In order to achieve the purpose, the invention adopts the following technical scheme:
the utility model provides a wireless waterproof solar energy spare satellite positioning navigation head of operation boats and ships, includes the bottom plate, the upper end of bottom plate is fixed with the lower cover, the top of lower cover is equipped with the upper cover, one side of upper cover is passed through the hinge and is rotated the connection on the lateral wall of lower cover, the opposite side of upper cover is equipped with the coupling mechanism who is connected with the lower cover, the top of upper cover is equipped with solar energy spare, the top of upper cover is equipped with and is used for carrying out the protection machanism that protects solar energy spare, all be equipped with the sealing strip on the outer wall of lower cover and the inner wall of upper cover, on cover and be equipped with the sealing mechanism who is used for with lower cover sealing connection, the lower cover inboard is equipped with data processing device, data processing device's four corners department all is connected with.
Preferably, coupling mechanism includes the connecting block of fixed connection on the upper cover lateral wall, the lower extreme fixedly connected with installation pipe of connecting block, the inside both sides of installation pipe all are equipped with the kelly, the kelly extends the installation pipe, the cutting ferrule of fixedly connected with and kelly adaptation on the lateral wall of lower cover, two be connected with the third spring between the kelly, the bar groove has been seted up on the lateral wall of installation pipe, fixedly connected with sliding connection is at the shifting block of bar inslot on the lateral wall of kelly.
Preferably, protection machanism includes the protection casing, equal fixedly connected with inserted bar on the both sides wall of protection casing, the top fixedly connected with of upper cover and the stop collar of inserted bar adaptation, the stop collar is made by the rubber material.
Preferably, sealing mechanism includes the annular inflation gasbag of fixed connection on the roof in the upper cover, the up end of lower cover is equipped with the seal groove that corresponds with annular inflation gasbag, fixedly connected with installation section of thick bamboo on the lateral wall of upper cover, be equipped with the gas storage bag in the installation section of thick bamboo, the inside breather pipe that is used for gas storage bag, annular inflation gasbag intercommunication that is equipped with of upper cover, run through on the lateral wall of installation section of thick bamboo and be equipped with rather than threaded connection's screw rod, the one end that the screw rod is located the installation section of thick bamboo is rotated and is connected with the briquetting, the briquetting offsets with the gas storage bag.
Preferably, positioning mechanism includes the locating lever of fixed connection on the inner wall of lower cover, the pot head is equipped with the position sleeve on the locating lever, position sleeve fixed connection is on the interior roof of upper cover, the cover is equipped with the adapter sleeve on the locating lever, adapter sleeve fixed connection is on the data processing device lateral wall, the cover is equipped with first spring, the second spring that sets up from top to bottom on the locating lever, and first spring coupling is at the position sleeve lower extreme.
Preferably, the data processing device comprises a battery frame, wherein a storage battery and a circuit board are arranged on the battery frame, and a data processing module, a satellite positioning module, a data storage module and a wireless high-frequency signal transmitting module are arranged on the circuit board.
Preferably, the width of the inner side of the sealing groove is larger than the width of the opening.
Preferably, the four corners of the bottom plate are provided with mounting holes.
The invention has the beneficial effects that:
1. through setting up hinge, coupling mechanism, insert through the kelly and establish in the cutting ferrule, can realize the high-speed joint installation of upper cover, lower cover, and when needing to open the upper cover, only need stir the shifting block, drive the kelly and shift out the cutting ferrule, can open the upper cover, the simple operation, and then the device on the convenient data processing device is maintained or is overhauld, and it is more convenient to use.
2. Through setting up solar energy spare, can charge for the battery, and then improve this satellite positioning navigation head's duration, can provide long-time incessant accurate positioning and navigation for the operation boats and ships under bad weather, simultaneously through setting up protection machanism, the protection casing is adorned to the accessible under bad weather, protects solar energy spare.
3. Through setting up sealing mechanism, after closing the upper cover, through the precession screw rod, through briquetting extrusion gas storage bag for gas in the gas storage bag gets into annular inflation gasbag, and then makes in annular inflation gasbag inflation advances the seal groove, and closely laminates with the seal groove inner wall, realizes good sealed effect, and waterproof performance is better.
4. Through setting up positioning mechanism, fix a position the installation through locating lever, position sleeve to data processing device, and make data processing device suspension installation through first spring, second spring, can play fine buffering effect to vibrations, and then effectively protect data processing device, guarantee its steady operation.
The invention can ensure good sealing effect, has better waterproof performance, is more suitable for being used on ships, is convenient to disassemble and assemble, is convenient to maintain or overhaul internal devices, and is more convenient to use.
Drawings
Fig. 1 is a schematic structural diagram of a satellite positioning navigation device for a wireless waterproof solar energy device of a working ship according to the present invention;
fig. 2 is a schematic structural diagram of an upper cover, a lower cover and a connecting mechanism of the wireless waterproof solar energy device satellite positioning navigation device for the working ship according to the present invention;
FIG. 3 is an enlarged view of FIG. 1 at A;
fig. 4 is a schematic structural diagram of a data processing device and a connecting sleeve of the wireless waterproof solar energy satellite positioning and navigation device of the working ship according to the present invention;
fig. 5 is a schematic structural diagram of a protective cover and an inserted link of the wireless waterproof solar energy satellite positioning navigation device for a working vessel according to the present invention.
In the figure: the solar energy heat collector comprises a base plate 1, a mounting hole 2, a lower cover 3, a hinge 4, an upper cover 5, a limiting sleeve 6, an inserted rod 7, a protective cover 8, a solar energy part 9, a positioning sleeve 10, a first spring 11, a data processing device 12, a connecting sleeve 13, a positioning rod 14, a second spring 15, a cutting sleeve 16, a connecting block 17, a mounting pipe 18, a third spring 19, a strip-shaped groove 20, a shifting block 21, a clamping rod 22, a vent pipe 23, an annular expansion air bag 24, a sealing groove 25, an air storage bag 26, a mounting cylinder 27, a screw 28, a pressing block 29 and a sealing strip 30.
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.
Referring to fig. 1-5, a wireless waterproof solar piece satellite positioning navigation device for an operation ship comprises a bottom plate 1, mounting holes 2 are formed in four corners of the bottom plate 1, a lower cover 3 is fixed to the upper end of the bottom plate 1, an upper cover 5 is arranged on the top of the lower cover 3, one side of the upper cover 5 is rotatably connected to the side wall of the lower cover 3 through a hinge 4, a connecting mechanism connected with the lower cover 3 is arranged on the other side of the upper cover 5, a solar piece 9 is arranged on the top of the upper cover 5, a protection mechanism used for protecting the solar piece 9 is arranged on the top of the upper cover 5, sealing strips 30 are arranged on the outer wall of the lower cover 3 and the inner wall of the upper cover 5, a sealing mechanism used for being connected with the lower cover 3 in a sealing mode is arranged on the upper cover 5, a data processing device 12 is arranged on the inner side of the lower cover 3, and positioning mechanisms.
According to the invention, the connecting mechanism comprises a connecting block 17 fixedly connected to the side wall of the upper cover 5, the lower end of the connecting block 17 is fixedly connected with an installation tube 18, clamping rods 22 are respectively arranged on two sides inside the installation tube 18, the clamping rods 22 extend out of the installation tube 18, a clamping sleeve 16 matched with the clamping rods 22 is fixedly connected to the side wall of the lower cover 3, a third spring 19 is connected between the two clamping rods 22, a strip-shaped groove 20 is formed in the side wall of the installation tube 18, and a shifting block 21 which is slidably connected in the strip-shaped groove 20 is fixedly connected to the side wall of the clamping rod 22.
Concretely, protection machanism includes protection casing 8, and equal fixedly connected with inserted bar 7 on the both sides wall of protection casing 8, the top fixedly connected with of upper cover 5 and the stop collar 6 of inserted bar 7 adaptation, stop collar 6 is made by the rubber material, has elasticity for inserted bar 7 inserts and to realize stable connection when establishing in stop collar 6.
Specifically, sealing mechanism includes annular inflation gasbag 24 on the roof in fixed connection upper cover 5, the up end of lower cover 3 is equipped with the seal groove 25 that corresponds with annular inflation gasbag 24, the inboard width of seal groove 25 is greater than opening width, make annular inflation gasbag 24 closely the inflation laminating in seal groove 25, fixedly connected with installation section of thick bamboo 27 on the lateral wall of upper cover 5, be equipped with gas storage bag 26 in the installation section of thick bamboo 27, upper cover 5 is inside to be equipped with and to be used for gas storage bag 26, the breather pipe 23 of annular inflation gasbag 24 intercommunication, run through on the lateral wall of installation section of thick bamboo 27 and be equipped with rather than threaded connection's screw rod 28, the one end rotation that screw rod 28 is located installation section of thick bamboo 27 is connected with briquetting 29, briquetting 29 offsets with gas storage bag 26.
Specifically, positioning mechanism includes locating lever 14 on the inner bottom wall of fixed connection in lower cover 3, and locating lever 14 upper end cover is equipped with position sleeve 10, and position sleeve 10 fixed connection is on the interior roof of upper cover 5, and the cover is equipped with adapter sleeve 13 on locating lever 14, and adapter sleeve 13 fixed connection is on data processing device 12 lateral wall, and the cover is equipped with first spring 11, the second spring 15 that set up from top to bottom on locating lever 14, and first spring 11 connects at position sleeve 10 lower extreme.
Specifically, the data processing device 12 includes a battery holder, a battery and a circuit board are disposed on the battery holder, a data processing module, a satellite positioning module, a data storage module and a wireless high-frequency signal transmitting module are disposed on the circuit board, the satellite positioning module is used for receiving satellite signals to achieve continuous positioning, the wireless high-frequency signal transmitting module achieves wireless communication through wireless signals, and navigation information is known in real time.
When the invention is used, the satellite positioning navigation device can be installed on a ship by installing the bolts in the installation holes 2, the data processing device 12 is positioned and installed through the positioning rods 14 and the positioning sleeve 10, the data processing device 12 is suspended and installed through the first spring 11 and the second spring 15, good buffering effect on vibration can be achieved, the data processing device 12 is effectively protected, stable operation of the data processing device is guaranteed, the upper cover 5 is closed, the clamping rods 22 are inserted in the clamping sleeve 16, quick connection and installation of the upper cover 5 and the lower cover 3 can be achieved, after the upper cover 5 is closed, the gas in the gas storage bag 26 enters the annular expansion gas bag 24 by screwing the screw 28 and extruding the gas storage bag 26 through the pressing block 29, the annular expansion gas bag 24 is expanded into the sealing groove 25 and is tightly attached to the inner wall of the sealing groove 25, and good sealing effect is achieved, waterproof performance is better, and when needing to open upper cover 5, unscrews screw rod 28 earlier for annular inflation gasbag 24 loses heart and reduces, stirs shifting block 21 again, drives kelly 22 and shifts out cutting ferrule 16, can open upper cover 5, and the simple operation, and then conveniently maintains or overhauls the device on the data processing apparatus 12, and it is more convenient to use.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be able to cover the technical scope of the present invention and the equivalent alternatives or modifications according to the technical solution and the inventive concept of the present invention within the technical scope of the present invention.

Claims (8)

1. The utility model provides a wireless waterproof solar energy spare satellite positioning navigation head of operation boats and ships, includes bottom plate (1), its characterized in that, the upper end of bottom plate (1) is fixed with lower cover (3), the top of lower cover (3) is equipped with upper cover (5), one side of upper cover (5) is rotated through hinge (4) and is connected on the lateral wall of lower cover (3), the opposite side of upper cover (5) is equipped with the coupling mechanism who is connected with lower cover (3), the top of upper cover (5) is equipped with solar energy spare (9), the top of upper cover (5) is equipped with the protection machanism who is used for protecting solar energy spare (9), all be equipped with sealing strip (30) on the outer wall of lower cover (3) and the inner wall of upper cover (5), be equipped with the sealing mechanism who is used for with lower cover (3) sealing connection on upper cover (5), lower cover (3) inboard is equipped with data processing apparatus (12), and four corners of the data processing device (12) are connected with positioning mechanisms.
2. The satellite positioning navigation device for the wireless waterproof solar energy part of the working ship according to claim 1, characterized in that the connecting mechanism comprises a connecting block (17) fixedly connected to the side wall of the upper cover (5), a mounting pipe (18) is fixedly connected to the lower end of the connecting block (17), clamping rods (22) are arranged on two sides of the inside of the mounting pipe (18), the clamping rods (22) extend out of the mounting pipe (18), clamping sleeves (16) matched with the clamping rods (22) are fixedly connected to the side wall of the lower cover (3), a third spring (19) is connected between the clamping rods (22), a strip-shaped groove (20) is formed in the side wall of the mounting pipe (18), and a shifting block (21) slidably connected to the side wall of the clamping rod (22) is arranged in the strip-shaped groove (20).
3. The satellite positioning and navigation device for the wireless waterproof solar energy component of the working ship according to claim 1, wherein the protection mechanism comprises a protection cover (8), the two side walls of the protection cover (8) are fixedly connected with inserted rods (7), the top of the upper cover (5) is fixedly connected with a limit sleeve (6) matched with the inserted rods (7), and the limit sleeve (6) is made of rubber.
4. The satellite positioning navigation device for the wireless waterproof solar energy piece of the working ship according to claim 1, characterized in that the sealing mechanism comprises an annular inflatable air bag (24) fixedly connected with the inner top wall of the upper cover (5), the upper end surface of the lower cover (3) is provided with a sealing groove (25) corresponding to the annular expansion air bag (24), the side wall of the upper cover (5) is fixedly connected with an installation cylinder (27), an air storage bag (26) is arranged in the installation cylinder (27), a vent pipe (23) for communicating the air storage bag (26) with the annular expansion air bag (24) is arranged in the upper cover (5), a screw rod (28) in threaded connection with the side wall of the mounting cylinder (27) penetrates through the side wall of the mounting cylinder, one end of the screw rod (28) located in the installation cylinder (27) is rotatably connected with a pressing block (29), and the pressing block (29) abuts against the air storage bag (26).
5. The satellite positioning and navigation device for the wireless waterproof solar energy piece of the working ship according to claim 1, wherein the positioning mechanism comprises a positioning rod (14) fixedly connected to the inner bottom wall of the lower cover (3), a positioning sleeve (10) is sleeved on the upper end of the positioning rod (14), the positioning sleeve (10) is fixedly connected to the inner top wall of the upper cover (5), a connecting sleeve (13) is sleeved on the positioning rod (14), the connecting sleeve (13) is fixedly connected to the side wall of the data processing device (12), a first spring (11) and a second spring (15) are sleeved on the positioning rod (14), and the first spring (11) is connected to the lower end of the positioning sleeve (10).
6. The satellite positioning and navigation device for the wireless waterproof solar energy element of the working ship according to claim 1, wherein the data processing device (12) comprises a battery frame, a storage battery and a circuit board are arranged on the battery frame, and a data processing module, a satellite positioning module, a data storage module and a wireless high-frequency signal transmitting module are arranged on the circuit board.
7. The satellite positioning and navigation device for the wireless waterproof solar energy element of the working ship according to claim 4, characterized in that the width of the inner side of the sealing groove (25) is larger than the width of the opening.
8. The satellite positioning and navigation device for the wireless waterproof solar energy element of the working ship according to claim 1, characterized in that mounting holes (2) are formed in the four corners of the bottom plate (1).
CN202110299472.1A 2021-03-22 2021-03-22 Wireless waterproof solar piece satellite positioning navigation device for operation ship Pending CN113068343A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202110299472.1A CN113068343A (en) 2021-03-22 2021-03-22 Wireless waterproof solar piece satellite positioning navigation device for operation ship

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202110299472.1A CN113068343A (en) 2021-03-22 2021-03-22 Wireless waterproof solar piece satellite positioning navigation device for operation ship

Publications (1)

Publication Number Publication Date
CN113068343A true CN113068343A (en) 2021-07-02

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Country Link
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Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107135622A (en) * 2017-05-12 2017-09-05 苏州霍姆特传感技术有限公司 A kind of electric component box of solar energy
CN208007195U (en) * 2018-03-08 2018-10-26 天津富士达体育用品有限公司 Forklift truck frame before a kind of new bicycle
CN208313377U (en) * 2018-07-11 2019-01-01 四川鹏翔电子科技有限责任公司 A kind of gas meter, flow meter sealing mounting box
CN209657225U (en) * 2019-05-27 2019-11-19 南京森林警察学院 A kind of computer hard disk protecting device
CN209982423U (en) * 2019-08-05 2020-01-21 广东格勤能源科技集团有限公司 Solar photovoltaic module
CN212436118U (en) * 2020-07-27 2021-01-29 吕明 Wireless waterproof solar piece satellite positioning navigation device for operation ship
CN112351616A (en) * 2020-11-06 2021-02-09 天津全和诚科技有限责任公司 Microwave generator
CN212580594U (en) * 2020-07-16 2021-02-23 陕西国际商贸学院 Fresh-keeping device of bright rehmannia root

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107135622A (en) * 2017-05-12 2017-09-05 苏州霍姆特传感技术有限公司 A kind of electric component box of solar energy
CN208007195U (en) * 2018-03-08 2018-10-26 天津富士达体育用品有限公司 Forklift truck frame before a kind of new bicycle
CN208313377U (en) * 2018-07-11 2019-01-01 四川鹏翔电子科技有限责任公司 A kind of gas meter, flow meter sealing mounting box
CN209657225U (en) * 2019-05-27 2019-11-19 南京森林警察学院 A kind of computer hard disk protecting device
CN209982423U (en) * 2019-08-05 2020-01-21 广东格勤能源科技集团有限公司 Solar photovoltaic module
CN212580594U (en) * 2020-07-16 2021-02-23 陕西国际商贸学院 Fresh-keeping device of bright rehmannia root
CN212436118U (en) * 2020-07-27 2021-01-29 吕明 Wireless waterproof solar piece satellite positioning navigation device for operation ship
CN112351616A (en) * 2020-11-06 2021-02-09 天津全和诚科技有限责任公司 Microwave generator

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Application publication date: 20210702