CN111918149A - Protection equipment of outdoor communication cabinet - Google Patents

Protection equipment of outdoor communication cabinet Download PDF

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Publication number
CN111918149A
CN111918149A CN202010837819.9A CN202010837819A CN111918149A CN 111918149 A CN111918149 A CN 111918149A CN 202010837819 A CN202010837819 A CN 202010837819A CN 111918149 A CN111918149 A CN 111918149A
Authority
CN
China
Prior art keywords
fixedly connected
bevel gear
fan
rotating shaft
motor
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.)
Withdrawn
Application number
CN202010837819.9A
Other languages
Chinese (zh)
Inventor
张康
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.)
Shanghai Wenqi Computer Co ltd
Original Assignee
Shanghai Wenqi Computer 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 Shanghai Wenqi Computer Co ltd filed Critical Shanghai Wenqi Computer Co ltd
Priority to CN202010837819.9A priority Critical patent/CN111918149A/en
Publication of CN111918149A publication Critical patent/CN111918149A/en
Withdrawn legal-status Critical Current

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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04QSELECTING
    • H04Q1/00Details of selecting apparatus or arrangements
    • H04Q1/02Constructional details
    • H04Q1/025Cabinets
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04QSELECTING
    • H04Q1/00Details of selecting apparatus or arrangements
    • H04Q1/02Constructional details
    • H04Q1/025Cabinets
    • H04Q1/026Cabinets characterized by door details
    • HELECTRICITY
    • H05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05KPRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K7/00Constructional details common to different types of electric apparatus
    • H05K7/20Modifications to facilitate cooling, ventilating, or heating
    • H05K7/20009Modifications to facilitate cooling, ventilating, or heating using a gaseous coolant in electronic enclosures
    • H05K7/20136Forced ventilation, e.g. by fans

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  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Casings For Electric Apparatus (AREA)

Abstract

The invention discloses a protective device of an outdoor communication cabinet, which comprises a body and a ground surface cavity which is arranged in the body and is opened forwards, wherein the bottom end of the ground surface cavity is provided with a base underground, a ground cavity is arranged in the base, the inside of the ground cavity is fixedly provided with the communication cabinet on the ground, the front part of the communication cabinet is provided with a left cabinet door and a right cabinet door, the left cabinet door is fixedly provided with a left handle, the right cabinet door is fixedly provided with a right handle, the top of the ground cavity is provided with a cooling water pipe, the protective device of the outdoor communication cabinet has simple structure and convenient operation, realizes the anti-collision protection and the anti-theft protection of the communication cabinet, the working procedures are mutually matched without influencing, the electric energy is provided by a solar panel to circulate collected rainwater and drive a fan to cool the communication cabinet body, the practicability and efficiency of the device are improved, waste of manpower and material resources is effectively avoided, and therefore the cost is greatly reduced.

Description

Protection equipment of outdoor communication cabinet
Technical Field
The invention relates to the field of communication cabinets, in particular to a protection device of an outdoor communication cabinet.
Background
The outdoor communication cabinet is one of outdoor cabinets, and refers to a cabinet body which is directly under the influence of natural weather, is made of metal or nonmetal materials, does not allow an unauthorized operator to enter the cabinet body for operation, and provides an outdoor physical working environment and a safety system for a wireless communication station or a wired network station workstation. The existing outdoor communication cabinet is not provided with a protection device, is often damaged due to the impact of foreign objects, has short service life, is not beneficial to use and popularization, is usually internally provided with a large number of electric elements and cables, and often has a theft event due to unstable outdoor surrounding environment.
Disclosure of Invention
The technical problem to be solved by the invention is to provide a protection device for an outdoor communication cabinet, which can overcome the problems.
The technical scheme adopted by the invention for solving the technical problems is as follows: the solar water heater comprises a machine body and a ground surface cavity with a forward opening arranged in the machine body, wherein a base is arranged at the bottom end of the ground surface cavity underground, a ground cavity is arranged in the base, a communication cabinet is fixedly arranged in the ground surface cavity, a left cabinet door and a right cabinet door are arranged in front of the communication cabinet, a left handle is fixedly arranged on the left cabinet door, a right handle is fixedly arranged on the right cabinet door, a cooling water pipe is arranged at the top of the ground surface cavity, nozzles are symmetrically arranged at the left end and the right end of the tail end of the cooling water pipe, the cooling water pipe is connected onto a circulating water pipe, the circulating water pipe is fixedly connected at the bottom end of a water pump, a water pump motor shaft is rotationally connected in the water pump motor, the water pump motor is fixedly connected at the middle part of the bottom end of, the solar cell panel is waterproof in surface and can be used for storing and connecting rainwater, the solar cell panel is fixedly connected to the top of the machine body, a fan motor is fixedly arranged in the machine body behind the water pump, the top end of the fan motor is connected with the solar cell panel to provide a power supply, a fan system is arranged below the fan motor, and the fan system provides electric energy through the solar cell panel and is used for dissipating heat when the communication cabinet works; the left end and the right end of the communication cabinet are symmetrically provided with anti-collision devices, and the anti-collision devices are used for relieving external impact because the equipment is arranged outdoors, so that the communication cabinet inside is protected; the anti-theft device is characterized in that a lock bolt is arranged inside the communication cabinet, the bottom of the lock bolt is blocked in the front of an anti-theft motor, the anti-theft motor can slide forwards and backwards in the underground cavity, the rear end of the anti-theft motor is elastically connected to the base through a motor spring, an anti-theft motor shaft is rotatably connected to the anti-theft motor, and an anti-theft device is arranged at the bottom of the anti-theft motor shaft.
Further, the fan system comprises the fan motor and a fan motor shaft which is rotatably connected with the inside of the fan motor, the fan motor shaft is rotatably connected with the inside of the machine body, a first bevel gear is fixedly connected to the bottom of the fan motor shaft, the first bevel gear is meshed with a second bevel gear, the second bevel gear is fixedly connected to a first fan rotating shaft, the rear end of the first fan rotating shaft is rotatably connected to the machine body, a first fan is fixedly connected to the front end of the first fan rotating shaft, the bottom end of the second bevel gear is meshed with a third bevel gear, the third bevel gear is fixedly connected to the top end of the first rotating shaft, the first rotating shaft is rotatably connected to the inside of the machine body, a fourth bevel gear is fixedly connected to the bottom end of the first rotating shaft, the fourth bevel gear is meshed with a fifth bevel gear, and the fifth bevel gear is fixedly connected to a second fan rotating, the rear end of the second fan rotating shaft is rotatably connected to the machine body, and the front end of the second fan rotating shaft is fixedly connected with a second fan.
Further, buffer stop includes the both ends are symmetrical respectively about the communication rack is provided with two pairs of anticollision springs and lower anticollision spring, go up anticollision spring with anticollision spring one end fixed connection down on the fuselage other end fixed connection is in two push pedals that bilateral symmetry set up, on the wall of push pedal left/right side equidistance fixedly connected with bearing roller arm respectively, the last fixed connection of bearing roller arm has the bearing roller axle, rotate on the bearing roller axle and be connected with the bearing roller, the surface butt is in on the outer wall of communication rack.
Furthermore, the anti-theft device comprises a sixth bevel gear fixedly connected to the bottom of the shaft of the anti-theft motor, a seventh bevel gear capable of being meshed with the sixth bevel gear is arranged at the left end of the sixth bevel gear, the seventh bevel gear is fixedly connected to a second rotating shaft, the second rotating shaft is rotatably connected to the base, a first belt pulley is fixedly connected to the second rotating shaft, a belt is abutted to the surface of the first belt pulley, the bottom end of the belt is abutted to the surface of the second belt pulley, the second belt pulley is fixedly connected to a third rotating shaft, the third rotating shaft is rotatably connected to the base, a first connecting rod is fixedly connected to the front end of the third rotating shaft, a second connecting rod is rotatably connected to the upper part of the first connecting rod through a first connecting rod shaft, a third connecting rod is rotatably connected to the middle part of the second connecting rod through a second connecting rod shaft, and the bottom end of the third connecting rod, dead axle fixed connection be in on the base, the second connecting rod top is rotated through fourth connecting rod axle and is connected with the fourth connecting rod, fourth connecting rod bottom is rotated and is connected at the baffle epaxially, baffle axle fixed connection is on the baffle, and both ends are gliding setting from top to bottom respectively about the baffle in left side slide rail and right slide rail, left side slide rail with right side slide rail is fixed to be set up on the base.
The invention has the beneficial effects that: the utility model provides a protective equipment of outdoor communication rack, equipment structure is simple, and convenient operation has realized the anticollision protection and the theftproof protection to the communication rack, mutually supports and does not influence between each process, has both provided the electric energy through solar cell panel and has circulated the rainwater of collection and driven the fan to the cooling of the communication rack cabinet body, has improved the practicality and the efficiency of device, the effectual waste of avoiding manpower and materials to reduce the cost by a wide margin.
Drawings
In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the invention, and it is obvious for those skilled in the art that other drawings can be obtained based on these drawings without creative efforts.
The invention is further illustrated with reference to the following figures and examples.
Fig. 1 is a schematic overall structure diagram of a protection device of an outdoor communication cabinet of the present invention;
FIG. 2 is a schematic view of the structure A-A of FIG. 1;
FIG. 3 is an enlarged schematic view of B of FIG. 1;
fig. 4 is an enlarged schematic view of C in fig. 2.
Detailed Description
The invention will now be described in detail with reference to fig. 1-4, wherein for ease of description the orientations described hereinafter are now defined as follows: the up, down, left, right, and front-back directions described below correspond to the up, down, left, right, and front-back directions in the projection relationship of fig. 1 itself.
The protection device for the outdoor communication cabinet described in conjunction with the attached fig. 1-4 comprises a body 11 and a ground surface cavity 91 with a forward opening arranged in the body 11, wherein a base 25 is arranged at the bottom end of the ground surface cavity 91 under the ground, a ground cavity 92 is arranged in the base 25, a communication cabinet 19 is fixedly arranged in the ground surface cavity 91, a left cabinet door 20 and a right cabinet door 27 are arranged in front of the communication cabinet 19, a left handle 21 is fixedly arranged on the left cabinet door 20, a right handle 28 is fixedly arranged on the right cabinet door 27, a cooling water pipe 12 is arranged at the top of the ground surface cavity 91, nozzles 13 are symmetrically arranged at the left end and the right end of the cooling water pipe 12, the cooling water pipe 12 is connected to a circulating water pipe 40, the circulating water pipe 40 is fixedly connected to the bottom end of a water pump 38, a water pump motor shaft 39 is rotatably connected to the water pump 38, and the, the water pump motor 29 is fixedly connected to the middle of the bottom end of the machine body 11, the two solar panels 30 are symmetrically connected to the left end and the right end of the water pump motor 29, the solar panels 30 are waterproof and can be used for storing and connecting rainwater, the solar panels 30 are fixedly connected to the top of the machine body 11, a fan motor 55 is fixedly arranged in the machine body 11 behind the water pump 38, the top end of the fan motor 55 is connected with the solar panels 30 to provide a power supply, a fan system 101 is arranged below the fan motor 55, and the fan system 101 provides electric energy through the solar panels 30 to dissipate heat generated when the communication cabinet 19 works; the left end and the right end of the communication cabinet 19 are symmetrically provided with the anti-collision devices 102, and the equipment is arranged outdoors, so that the anti-collision devices 102 are used for relieving external impact, and the communication cabinet 19 inside the equipment is protected; the inside set bar 41 that is provided with of communication rack 19, set bar 41 bottom keeps off in theftproof motor 72 the place ahead, the setting that can slide around theftproof motor 72 is in underground cavity 92, the motor spring 78 elastic connection is passed through to theftproof motor 72 rear end on the base 25, the internal rotation of theftproof motor 72 is connected with theftproof motor shaft 73, theftproof motor shaft 73 bottom is provided with anti-theft device 103, because it is stolen easily to be provided with a large amount of electrical components and cable in the communication rack 19, so anti-theft device 103 is used for the theftproof of communication rack 19.
Advantageously, the fan system 101 comprises the fan motor 55 and a fan motor shaft 54 rotatably connected to the inside of the fan motor 55, the fan motor shaft 54 is rotatably connected to the inside of the body 11, a first bevel gear 53 is fixedly connected to the bottom of the fan motor shaft 54, the first bevel gear 53 is engaged with a second bevel gear 51, the second bevel gear 51 is fixedly connected to a first fan rotating shaft 52, the rear end of the first fan rotating shaft 52 is rotatably connected to the body 11, the front end of the first fan rotating shaft 52 is fixedly connected to a first fan 49, the bottom end of the second bevel gear 51 is engaged with a third bevel gear 50, the third bevel gear 50 is fixedly connected to the top end of the first rotating shaft 48, the first rotating shaft 48 is rotatably connected to the body 11, the bottom end of the first rotating shaft 48 is fixedly connected to a fourth bevel gear 47, the fourth bevel gear 47 is engaged with a fifth bevel gear 45, the fifth bevel gear 45 is fixedly connected to a second fan rotating shaft 46, the rear end of the second fan rotating shaft 46 is rotatably connected to the machine body 11, and the front end of the second fan rotating shaft 46 is fixedly connected to the second fan 44.
Beneficially, the anti-collision device 102 includes that two pairs of upper anti-collision springs 14 and lower anti-collision springs 22 are symmetrically arranged at the left end and the right end of the communication cabinet 19, one ends of the upper anti-collision springs 14 and the lower anti-collision springs 22 are fixedly connected to the machine body 11, the other ends of the upper anti-collision springs and the lower anti-collision springs 22 are fixedly connected to two push plates 16 symmetrically arranged left and right, carrier roller arms 15 are fixedly connected to the left/right end walls of the push plates 16 at equal intervals, carrier roller shafts 17 are fixedly connected to the carrier roller arms 15, carrier rollers 18 are rotatably connected to the carrier roller shafts 17, and the surfaces of the carrier rollers abut against the.
Advantageously, the anti-theft device 103 comprises a shaft 73 of the anti-theft motor, a sixth bevel gear 74 fixedly connected to the bottom of the shaft 73, a seventh bevel gear 75 engageable with the sixth bevel gear is provided at the left end of the sixth bevel gear, the seventh bevel gear 75 is fixedly connected to a second rotating shaft 77, the second rotating shaft 77 is rotatably connected to the base 25, a first belt pulley 76 is fixedly connected to the second rotating shaft 77, a belt 42 is abutted to the surface of the first belt pulley 76, the bottom end of the belt 42 is abutted to the surface of the second belt pulley 43, the second belt pulley is fixedly connected to a third rotating shaft 68, the third rotating shaft 68 is rotatably connected to the base 25, a first link 68 is fixedly connected to the front end of the third rotating shaft 68, a second link 64 is rotatably connected to the upper side of the first link 68 through a first link 66, a third link 71 is rotatably connected to the middle portion of the second link 64 through a second link shaft 65, third connecting rod 71 bottom is rotated and is connected on dead axle 70, dead axle 70 fixed connection be in on the base 25, second connecting rod 64 top is rotated through fourth connecting rod axle 63 and is connected with fourth connecting rod 62, fourth connecting rod 62 bottom is rotated and is connected on baffle axle 61, baffle axle 61 fixed connection is on baffle 23, and both ends are gliding setting up in left slide rail 24 and right slide rail 26 about baffle 23 respectively, left side slide rail 24 with right side slide rail 26 is fixed to be set up on the base 25.
Sequence of mechanical actions of the whole device: when the equipment works and rain water is stored in the solar cell panel 30 at the top of the machine body in rainy days, the solar cell panel 30 provides a power supply to drive the water pump motor 29 to work, the water pump motor 29 drives the water pump 38 to work to flush the stored water into the circulating water pipe 40, so that the communication cabinet 19 is cooled, and when the water is circulated in the circulating water pipe, the water enters the cooling water pipe 12 and is sprayed out through the spray head 13 to clean the outer wall of the communication cabinet; the solar cell panel provides electric energy to drive the fan motor 55 to work, and the motor 55 works to drive the fan system to work, so that the inside of the communication cabinet 19 is cooled; the upper impact spring 14 and the lower impact spring 22 are in a relaxation state in an initial state, when the external impact is generated on the equipment (caused by man-made or wild animals), the upper impact spring 14 and the lower impact spring 22 are in a compression state, and the carrier roller arm 15 and the carrier roller 18 play a role in buffering the impact force, so that the communication cabinet 19 is protected; the anti-theft device 103 is used for preventing the violent opening of the door by the aid of the baffle 23 which is a thick steel plate when the door is opened by external force violently, so that the anti-theft function is achieved, the motor spring 78 is in a compression state in an initial state, the lock bolt 41 moves upwards to start the anti-theft motor 72 when the door is opened normally, the anti-theft motor 72 is popped by the motor spring 78 to slide forwards, the sixth bevel gear 74 is meshed with the seventh bevel gear 75, the second rotating shaft 77 is driven to rotate, the first connecting rod 68 is driven to rotate through belt transmission, and the left cabinet door 20 and the right cabinet door 27 can be opened.
The above description is only an embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that are not thought of through the inventive work should be included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope defined by the claims.

Claims (4)

1. The utility model provides a protective equipment of outdoor communication rack, include the fuselage and be provided with forward open-ended ground table chamber in the fuselage, its characterized in that: the bottom end of the surface cavity is provided with a base underground, the base is internally provided with a ground cavity, the inside of the surface cavity is fixedly provided with a communication cabinet on the ground, the front part of the communication cabinet is provided with a left cabinet door and a right cabinet door, the left cabinet door is fixedly provided with a left handle, the right cabinet door is fixedly provided with a right handle, the top part of the surface cavity is provided with a cooling water pipe, the left end and the right end of the cooling water pipe are symmetrically provided with spray heads, the cooling water pipe is connected to a circulating water pipe, the circulating water pipe is fixedly connected to the bottom end of a water pump, a water pump motor shaft is rotationally connected to the water pump motor, the water pump motor is fixedly connected to the middle part of the bottom end of the machine body, the left end and the right end of the water pump motor are symmetrically connected with, the solar panel is fixedly connected to the top of the machine body, a fan motor is fixedly arranged in the machine body behind the water pump, the top end of the fan motor is connected with the solar panel to provide a power supply, a fan system is arranged below the fan motor, and the fan system provides electric energy through the solar panel to dissipate heat when the communication cabinet works; the left end and the right end of the communication cabinet are symmetrically provided with anti-collision devices, and the anti-collision devices are used for relieving external impact because the equipment is arranged outdoors, so that the communication cabinet inside is protected; the anti-theft device is characterized in that a lock bolt is arranged inside the communication cabinet, the bottom of the lock bolt is blocked in the front of an anti-theft motor, the anti-theft motor can slide forwards and backwards in the underground cavity, the rear end of the anti-theft motor is elastically connected to the base through a motor spring, an anti-theft motor shaft is rotatably connected to the anti-theft motor, and an anti-theft device is arranged at the bottom of the anti-theft motor shaft.
2. The invention as described in claim 1 relates to a protection device for an outdoor communication cabinet, which is characterized in that: the fan system comprises the fan motor and a fan motor shaft which is rotationally connected with the inside of the fan motor, the fan motor shaft is rotationally connected with the inside of the machine body, a first bevel gear is fixedly connected to the bottom of the fan motor shaft, the first bevel gear is meshed with a second bevel gear, the second bevel gear is fixedly connected to a first fan rotating shaft, the rear end of the first fan rotating shaft is rotationally connected to the machine body, a first fan is fixedly connected to the front end of the first fan rotating shaft, the bottom end of the second bevel gear is meshed with a third bevel gear, the third bevel gear is fixedly connected to the top end of the first rotating shaft, the first rotating shaft is rotationally connected to the inside of the machine body, a fourth bevel gear is fixedly connected to the bottom end of the first rotating shaft, the fourth bevel gear is meshed with a fifth bevel gear, and the fifth bevel gear is fixedly connected to a second, the rear end of the second fan rotating shaft is rotatably connected to the machine body, and the front end of the second fan rotating shaft is fixedly connected with a second fan.
3. The invention as described in claim 1 relates to a protection device for an outdoor communication cabinet, which is characterized in that: the anti-collision device comprises two pairs of upper anti-collision springs and lower anti-collision springs which are symmetrically arranged at the left end and the right end of the communication cabinet respectively, the upper anti-collision springs and the lower anti-collision springs are fixedly connected to two push plates which are symmetrically arranged at the left end and the right end of the machine body respectively, the left end wall and the right end wall of each push plate are fixedly connected with carrier roller arms at equal intervals respectively, carrier roller shafts are fixedly connected to the carrier roller arms, carrier rollers are rotatably connected to the carrier roller shafts, and the surfaces of the carrier rollers are abutted to the outer walls of the communication cabinet.
4. The invention as described in claim 1 relates to a protection device for an outdoor communication cabinet, which is characterized in that: the anti-theft device comprises a sixth bevel gear fixedly connected to the bottom of the shaft of the anti-theft motor, a seventh bevel gear capable of being meshed with the sixth bevel gear is arranged at the left end of the sixth bevel gear, the seventh bevel gear is fixedly connected to a second rotating shaft, the second rotating shaft is rotatably connected to the base, a first belt pulley is fixedly connected to the second rotating shaft, a belt is abutted to the surface of the first belt pulley, the bottom end of the belt is abutted to the surface of a second belt pulley, the second belt pulley is fixedly connected to a third rotating shaft, the third rotating shaft is rotatably connected to the base, a first connecting rod is fixedly connected to the front end of the third rotating shaft, a second connecting rod is rotatably connected to the upper part of the first connecting rod through a first connecting rod shaft, a third connecting rod is rotatably connected to the middle part of the second connecting rod through a second connecting rod shaft, and the bottom end of the third, dead axle fixed connection be in on the base, the second connecting rod top is rotated through fourth connecting rod axle and is connected with the fourth connecting rod, fourth connecting rod bottom is rotated and is connected at the baffle epaxially, baffle axle fixed connection is on the baffle, and both ends are gliding setting from top to bottom respectively about the baffle in left side slide rail and right slide rail, left side slide rail with right side slide rail is fixed to be set up on the base.
CN202010837819.9A 2020-08-19 2020-08-19 Protection equipment of outdoor communication cabinet Withdrawn CN111918149A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202010837819.9A CN111918149A (en) 2020-08-19 2020-08-19 Protection equipment of outdoor communication cabinet

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202010837819.9A CN111918149A (en) 2020-08-19 2020-08-19 Protection equipment of outdoor communication cabinet

Publications (1)

Publication Number Publication Date
CN111918149A true CN111918149A (en) 2020-11-10

Family

ID=73279407

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202010837819.9A Withdrawn CN111918149A (en) 2020-08-19 2020-08-19 Protection equipment of outdoor communication cabinet

Country Status (1)

Country Link
CN (1) CN111918149A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112566422A (en) * 2020-12-18 2021-03-26 南京鼎天吉贸易有限公司 Communication cabinet device capable of extending into underground

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112566422A (en) * 2020-12-18 2021-03-26 南京鼎天吉贸易有限公司 Communication cabinet device capable of extending into underground

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Application publication date: 20201110

WW01 Invention patent application withdrawn after publication