CN214192472U - Lifting platform for network engineering construction - Google Patents

Lifting platform for network engineering construction Download PDF

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Publication number
CN214192472U
CN214192472U CN202023144676.8U CN202023144676U CN214192472U CN 214192472 U CN214192472 U CN 214192472U CN 202023144676 U CN202023144676 U CN 202023144676U CN 214192472 U CN214192472 U CN 214192472U
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CN
China
Prior art keywords
vertical rod
lifting
lifting platform
controller
engineering construction
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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.)
Expired - Fee Related
Application number
CN202023144676.8U
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Chinese (zh)
Inventor
赵金良
辛福彬
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Jilin Yuntong Technology Co ltd
Original Assignee
Jilin Yuntong Network Engineering 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 Jilin Yuntong Network Engineering Co ltd filed Critical Jilin Yuntong Network Engineering Co ltd
Priority to CN202023144676.8U priority Critical patent/CN214192472U/en
Application granted granted Critical
Publication of CN214192472U publication Critical patent/CN214192472U/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Abstract

A lifting platform for network engineering construction relates to the technical field of network engineering construction, solves the problems of low safety and large occupied space in the prior art, and comprises a bottom plate, a moving mechanism, a lifting support, a lifting driving mechanism, a lifting platform, a controller, a remote controller and a power supply unit, wherein the lifting platform can be lifted through the lifting driving mechanism; the controller controls the lifting platform to lift and the moving mechanism to drive the bottom plate to move back and forth and left and right through the remote control of the remote controller; the elevating platform includes backup pad, high telescopic rail and business turn over door, and rail and business turn over door all set up in the backup pad, are equipped with the couple in the backup pad. The utility model discloses accomodate that area occupied is little, use area little, application scope is wide, use nimble, efficient, construction operation security is high.

Description

Lifting platform for network engineering construction
Technical Field
The utility model relates to a network engineering construction technical field, concretely relates to lift platform is used in network engineering construction.
Background
Network engineering refers to engineering performed according to a plan to design, research, develop and solve problems of a network system in an engineering idea, mode and method. With the popularization of internet in China, the construction of network engineering is orderly carried out, the network engineering construction generally realizes the transmission of a network by burying optical cables or erecting and connecting optical cables at high altitudes on roofs, and workers can need ladder lift trucks and the like to carry out auxiliary work when the optical cables are erected and connected at high altitudes. However, most of the existing network cables are laid indoors or among floors, a large lift car is inconvenient to enter, longitudinal occupied space during storage is usually considered, the lift fences of the lift car and the lift platform are short, the height of the lift fences is mostly about 1 meter, and the lift fences only reach the thighs of constructors; ladder etc. are inconvenient to turn to, need two staff, and one is responsible for holding up the ladder of work, just can accomplish work through removing many times. Therefore, an auxiliary device for high-altitude construction operation, which has the advantages of small occupied space, flexible use, high efficiency, convenient steering and capability of ensuring the safety of constructors, is needed.
SUMMERY OF THE UTILITY MODEL
In order to solve the problem, the utility model provides a lifting platform is used in network engineering construction.
The utility model discloses a solve the technical scheme that technical problem adopted as follows:
a lifting platform for network engineering construction comprises a bottom plate, a moving mechanism, a lifting support, a lifting driving mechanism, a lifting platform, a controller, a remote controller and a power supply unit, wherein the lifting support, the lifting driving mechanism, the moving mechanism, the controller and the power supply unit are all arranged on the bottom plate; through the remote control of the remote controller, the controller can control the lifting driving mechanism to drive the lifting platform to lift, and can also control the moving mechanism to drive the bottom plate to move forwards, backwards, turn left and turn right; the elevating platform includes backup pad, high telescopic rail and high telescopic business turn over door, rail and business turn over door all set up in the backup pad, and business turn over door rotates and connects the rail, are equipped with the couple on backup pad upper surface edge or the backup pad lateral wall, and the thing that hangs through the couple lies in outside the elevating platform.
Further, the rail includes the first montant of bottom joint support board, connects the first horizontal pole of first montant, second montant and the second horizontal pole of connecting the second montant, the second horizontal pole is located the top of first horizontal pole, be equipped with the hole of accomodating that is used for accomodating the second montant on the first montant, the second montant is located and accomodates the hole, the second montant can go up and down for first montant through accomodating the hole, the second montant passes through lock nut or the first montant of bolt swing joint.
Furthermore, when the second vertical rod is in an extending state relative to the first vertical rod, the lower portion of the second vertical rod is connected with the first vertical rod through a locking nut or a bolt, and when the second vertical rod is in a retracting state relative to the first vertical rod, the upper portion of the second vertical rod is connected with the first vertical rod through a locking nut or a bolt.
Further, the business turn over door is fence formula business turn over door, fence formula business turn over door includes fence door body, third montant and third horizontal pole, is equipped with the third montant on the fence door body and accomodates the hole, and the third montant passes through lock nut or bolt swing joint fence door body, and third montant upper portion is connected to the third horizontal pole, and the third horizontal pole is located fence door body top.
Further, when the third vertical rod is in an extending state relative to the gate body, the lower portion of the third vertical rod is connected with the gate body through a locking nut or a bolt, and when the third vertical rod is in a retracting state relative to the gate body, the upper portion of the third vertical rod is connected with the gate body through a locking nut or a bolt.
Furthermore, the supporting plate is provided with an anti-skid pad.
Furthermore, the left side or the right side of the supporting plate is at least provided with one hook, and the front side or the rear side of the supporting plate is at least provided with one hook.
The utility model has the advantages that:
1. the utility model discloses a lifting platform for network engineering construction can take constructor to remove, and constructor oneself just can realize through the remote controller moreover that lifting platform gos forward and retreat each item function such as turn and lift, turns to the convenience, has improved construction work efficiency, realizes the stability flexibility of walking.
2. By suspending the construction articles outside the lifting platform, the construction articles do not occupy the space in the lifting platform any more, and the volume and the occupied area of the lifting platform are reduced as much as possible, so that the lifting platform is suitable for being used in narrow spaces in network construction.
3. Realize the elevating platform can highly scalable through high telescopic rail and business turn over door, the elevating platform is in the state of stretching out when removing, improves and guarantees constructor's psychology and the safety of health when removing, simultaneously, with the elevating platform withdrawal when not using, guarantees that occupation space when not using is less, and convenient storage is convenient for accomodate.
4. The utility model discloses a lifting platform for network engineering construction accomodates area occupied little, uses area little, application scope is wide, use nimble, efficient, the security that has improved constructor high altitude construction operation.
Drawings
Fig. 1 is the utility model discloses a lifting platform's for network engineering construction schematic diagram.
In the figure: 1. bottom plate, 2, wheel, 3, lifting support, 4, electronic jar, 5, first montant, 6, first horizontal pole, 7, second montant, 8, second horizontal pole, 9, lock nut, 10, fence door body, 11, third montant, 12, third horizontal pole, 13, backup pad, 14, couple.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
A lifting platform for network engineering construction is shown in figure 1 and comprises a bottom plate 1, a moving mechanism, a lifting support 3, a lifting driving mechanism, a lifting platform, a controller, a remote controller and a power supply unit. The lifting support 3 is arranged on the upper surface of the bottom plate 1, the lifting driving mechanism is arranged on the upper surface of the bottom plate 1, the lifting platform is arranged on the lifting support 3, and the lifting support 3 is controlled by the lifting driving mechanism to realize the lifting of the lifting platform. The bottom plate 1 is provided with a moving mechanism, and the bottom plate 1 can move forwards, backwards, turn left and turn right through the moving mechanism. The power supply unit is arranged on the bottom plate 1 and supplies power for the moving mechanism, the controller and the lifting driving mechanism. The controller is in signal connection with the lifting driving mechanism and the moving mechanism, the controller can send control signals to control the moving mechanism to drive the bottom plate 1 to move forwards, backwards and turn, and the controller can send control signals to control the lifting driving mechanism to drive the lifting platform to lift. The remote controller and the controller form wireless signal receiving and sending, the remote controller is provided with keys which send trigger signals to trigger the controller to send control signals, the keys comprise an advancing key, a backing key, a left-turning key, a right-turning key, an ascending key and a descending key, the remote controller sends the trigger signals through the keys on the remote controller, the controller receives the trigger signals and sends control signals to control the lifting driving mechanism and the moving mechanism according to the trigger signals, and therefore the controller and the controller can control the lifting platform to advance, back, turn and lift. The elevating platform comprises a supporting plate 13, a fence arranged on the supporting plate 13 and an access door arranged on the supporting plate 13, wherein the access door is rotatably connected with the fence, and the fence is a highly telescopic fence. The access door is a highly retractable access door. The support plate 13 is provided with a hook 14, and suspended objects such as tool bags or cables for network engineering construction can be suspended through the hook 14 and are positioned outside the lifting platform. The hook 14 is provided at an edge of an upper surface of the support plate 13 or on a sidewall of the support plate 13.
Above-mentioned rail includes first montant 5, first horizontal pole 6, second montant 7 and second horizontal pole 8, and the bottom joint support board 13 of first montant 5, first horizontal pole 6 is connected to first montant 5, and second horizontal pole 8 is connected to second montant 7, and the upper portion of second montant 7 is connected to second horizontal pole 8, and second horizontal pole 8 is located the top of first horizontal pole 6, the first montant 5 of 7 swing joint of second montant. Be equipped with the hole of accomodating that is used for accomodating second montant 7 on the first montant 5, set up the hole of accomodating on the first montant 5 up end promptly, the length direction who accomodates the hole is unanimous with the length direction of first montant 5, and length direction is vertical direction, and first montant 5 can be hollow pole. The second vertical rod 7 is positioned in the accommodating hole and is connected with the first vertical rod 5 through the accommodating hole. When the folding bicycle is in a use state, namely the second vertical rod 7 is in an extending state relative to the first vertical rod 5, the lower part of the second vertical rod 7 is connected with the upper part of the first vertical rod 5 through the locking nut 9 or the bolt, and the bottom surface of the second vertical rod 7 is positioned in the first vertical rod 5. When the state of accomodating promptly when second montant 7 is the withdrawal state for first montant 5, second montant 7 middle part and lower part are arranged in first montant 5, and lock nut 9 or bolt connection first montant 5 are passed through on the upper portion of second montant 7. The height of the fence can be adjusted and telescopic through the lifting of the second vertical rod 7 and the second cross rod 8 relative to the first vertical rod 5 and the first cross rod 6. The depth of the accommodating hole is usually greater than 2/3 of the length of the second vertical rod 7, and the middle part and the lower part of the second vertical rod 7 can be inserted into the first vertical rod 5 to be accommodated. The height of the fence can be adjusted and telescopic through the lifting of the second vertical rod 7 and the second cross rod 8 relative to the first vertical rod 5 and the first cross rod 6.
The connection of the lower part of the second vertical rod 7 to the upper part of the first vertical rod 5 through the bolt may specifically be: first montant 5 upper end is equipped with first bolt hole, the lower part of second montant 7 is equipped with the second bolt hole, the upper portion of second montant 7 is equipped with the third bolt hole, when second montant 7 is accomodate in first montant 5, first montant 5 and the fixed first bolt hole of passing of second montant 7 through the bolt and third bolt hole realize, when second montant 7 is not accomodate in first montant 5, extract the bolt in the third bolt hole, upwards pull up second montant 7, then pass second bolt hole and the fixed first montant 5 of third bolt and second montant 7 through the bolt. The connection of the lower part of the second vertical rod 7 to the upper part of the first vertical rod 5 through the locking nut 9 is specifically as follows: the upper portion of first montant 5 is equipped with lock nut 9, when second montant 7 is accomodate in first montant 5, through lock nut 9 locking fixed first montant 5 and second montant 7, when second montant 7 is not accomodate in first montant 5, rotate lock nut 9 and cancel lock nut 9's locking, upwards pull up second montant 7 to the height of demand, then lock with first montant 5 of temporary fixation and second montant 7 through lock nut 9.
Foretell business turn over door is fence formula business turn over door, including fence door body 10, third montant 11 and third horizontal pole 12, third horizontal pole 12 is connected to third montant 11, and third horizontal pole 12 is located fence door body 10 upside, is equipped with third montant 11 on the fence door body 10 and accomodates the hole, and third montant 11 can be accomodate third montant 11 and accomodate in the hole, and third montant 11 accomodates hole and fence door body 10 swing joint through third montant 11. The length direction of the third vertical bar 11 receiving hole is the vertical direction. Typically the third vertical bar 11 receives the aperture at a depth exceeding 2/3 the length of the third vertical bar 11. Third montant 11 can be followed third montant 11 and accomodate the hole and insert in the fence door body 10, and third montant 11 middle part and lower part can be inserted and realize accomodating in the fence door body 10. When the fence door is in a use state, namely the third vertical rod 11 is in an extending state relative to the fence door body 10, the lower part of the third vertical rod 11 is connected with the upper part of the fence door body 10 through the locking nut 9 or the bolt, and the bottom surface of the third vertical rod 11 is located in the fence door body 10. When the fence door is in the storage state, that is, when the third vertical rod 11 is in the retraction state relative to the fence door body 10, the upper part of the third vertical rod 11 is connected to the fence door body 10 through the lock nut 9 or the latch. The height of the access door can be adjusted and telescopic through the lifting of the third vertical rod 11 and the third cross rod 12 relative to the fence door body 10. The connection between the fence door body 10 and the third vertical rod 11 via the locking nut 9 or the latch can be designed and manufactured by those skilled in the art with reference to the above paragraphs, and will not be described in detail herein.
The moving mechanism comprises four wheels 2, driving motors and electric wheel steering control devices, wherein each wheel 2 is provided with one driving motor for driving the wheels 2, and the driving motors adopt speed reduction integrated driving motors. The wheel electric steering control device is used for driving the lifting platform for network engineering construction to turn. The power supply unit supplies power for the lifting driving mechanism, the driving motor, the controller and the wheel electric steering control device, the controller is in signal connection with the lifting driving mechanism, the driving motor and the wheel electric steering control device respectively and sends out control signals to control the driving motor to drive the lifting platform for network engineering construction to move forward and backward, the wheel electric steering control device is controlled to drive the lifting platform for network engineering construction to turn, and the lifting driving mechanism is controlled to drive the lifting platform to lift. The remote controller sends out a trigger signal through pressing keys on the remote controller, and the controller receives the trigger signal and sends out a control signal to control the lifting driving mechanism, the driving motor or the wheel electric steering control device.
The lifting support 3 is a scissor type lifting mechanism and comprises scissor type telescopic assemblies which are arranged on two sides of the bottom plate 1 and respectively formed by four scissor pieces hinged to the middle parts, and each scissor piece is formed by hinging a scissor inner arm and a scissor outer arm. The upside both ends of scissors fork spare are articulated mutually with the downside both ends of scissors fork spare that are located the upside respectively, the downside both ends of scissors fork spare are articulated mutually with the upside both ends that are located the scissors fork spare of downside respectively, the upside both ends that are located the scissors fork spare of the top are provided with the gyro wheel respectively, the bottom both sides of elevating platform backup pad 13 vertically are provided with respectively with gyro wheel sliding fit's channel-section steel, the downside both ends that are located the scissors fork spare of downside are provided with the gyro wheel respectively, the both sides portion of bottom plate 1 is provided with respectively with gyro wheel sliding fit's channel-section steel, the gyro wheel restriction that will remove the end with the channel-section steel is on the folk prescription moves. The two ends of the lower side of the scissors fork piece positioned on one side are respectively and transversely provided with a fixed rod connected with the two ends of the lower side of the scissors fork piece corresponding to the other side.
The lifting driving mechanism can adopt an electric cylinder 4 and can also adopt a hydraulic driving mechanism, the hydraulic driving mechanism comprises a lower hydraulic cylinder, an upper hydraulic cylinder and a hydraulic system, and the hydraulic system is used for driving the lower hydraulic cylinder and the upper hydraulic cylinder. The hydraulic system comprises a hydraulic pump, an oil tank and a motor. The bottom plate 1 is provided with a lower hydraulic cylinder, and the bottom of the support plate 13 is provided with an upper hydraulic cylinder. The telescopic rod of the lower hydraulic cylinder is hinged with the hinge seat on the fixed rod at the lowest side; the bottom of elevating platform is provided with upper portion pneumatic cylinder, and the telescopic link of upper portion pneumatic cylinder is articulated mutually with the articulated seat on the dead lever of the top. The motor is connected with the controller, and the hydraulic pump and the motor are connected with the power supply unit. The motor drives the hydraulic pump to absorb and press oil, the hydraulic pump is connected with the lower hydraulic cylinder and the upper hydraulic cylinder through the oil conveying pipe, and the oil reaches oil inlets of the lower hydraulic cylinder and the upper hydraulic cylinder through hydraulic elements and pipelines in the hydraulic system, so that the lower hydraulic cylinder and the upper hydraulic cylinder complete telescopic actions, the lower hydraulic cylinder and the upper hydraulic cylinder stretch and drive the scissor-fork type lifting mechanism to extend and fold, and the lifting of the lifting platform is realized.
The support plate 13 is provided with a non-slip mat.
The number of the hooks 14 is at least two, at least one hook 14 is arranged on the left side or the right side of the support plate 13, and at least one hook 14 is arranged on the front side or the rear side of the support plate 13.
When not in use, the fence and the access door are in a highly retracted state, and the network engineering builder hangs the articles required for use on the hook 14. The network engineering constructor enters the lifting platform through the access door, and adjusts the fence and the access door to a high-degree extending state after closing the access door. When the lifting platform needs to be adjusted, a network engineering constructor controls the forward movement, the backward movement, the left rotation and the right rotation of the lifting platform for network engineering construction through a handheld remote controller, and controls the lifting of the supporting plate 13 through the handheld remote controller. When the lifting platform needs to be moved, corresponding control operation is carried out by pressing a forward key, a backward key, a left-turn key and a right-turn key on the remote controller, and the four driving motors respectively carry out forward and backward rotation and rotation speed adjustment according to working requirements, so that the forward, steering and backward operation of the lifting platform is realized. When the lifting platform needs to be lifted, the lifting driving mechanism is started to reach an ideal operation height by pressing a lifting key and a descending key on the remote controller.
The utility model discloses a lifting platform for network engineering construction can take constructor to remove, comes remote trigger control ware through the remote controller moreover and realizes that this lifting platform advances to retreat each item function such as turn and lift, conveniently turns to, has improved construction work efficiency, and constructor just alone can control moreover. Four-wheel drive is adopted, and walking is stable and flexible. By suspending the construction articles outside the lifting platform, the construction articles do not occupy the space in the lifting platform any more, and the volume and the occupied area of the lifting platform are reduced as much as possible, so that the lifting platform is suitable for being used in narrow spaces in network construction. Realize the elevating platform can highly scalable through high telescopic rail and business turn over door, the elevating platform is in the state of stretching out when removing, improves and guarantees constructor's psychology and the safety of health when removing, simultaneously, with the elevating platform withdrawal when not using, guarantees that occupation space when not using is less, and convenient storage is convenient for accomodate. The utility model discloses a lifting platform for network engineering construction accomodates area occupied little, uses area little, application scope is wide, use nimble, efficient, improve constructor high altitude construction operation's security.

Claims (7)

1. A lifting platform for network engineering construction is characterized by comprising a bottom plate (1), a moving mechanism, a lifting support (3), a lifting driving mechanism, a lifting platform, a controller, a remote controller and a power supply unit, wherein the lifting support (3), the lifting driving mechanism, the moving mechanism, the controller and the power supply unit are all arranged on the bottom plate (1), the lifting platform is positioned on the lifting support (3), the lifting platform can be lifted through the lifting driving mechanism, the bottom plate (1) can advance, retreat, turn left and turn right through the moving mechanism, the power supply unit is connected with the moving mechanism, the controller and the lifting driving mechanism, the remote controller is in wireless signal connection with the controller, and the controller is in signal connection with the lifting driving mechanism and the moving mechanism; through the remote control of the remote controller, the controller can control the lifting driving mechanism to drive the lifting platform to lift, and can also control the moving mechanism to drive the bottom plate (1) to move forward, backward, turn left and turn right; the elevating platform includes backup pad (13), high telescopic rail and high telescopic business turn over door, rail and business turn over door all set up on backup pad (13), and business turn over door rotates and connects the rail, is equipped with couple (14) on backup pad (13) upper surface edge or backup pad (13) lateral wall, and the thing that hangs through couple (14) is located outside the elevating platform.
2. The lifting platform for network engineering construction as claimed in claim 1, wherein the fence comprises a first vertical rod (5) connected with a support plate (13) at the bottom end, a first cross rod (6) connected with the first vertical rod (5), a second vertical rod (7) and a second cross rod (8) connected with the second vertical rod (7), the second cross rod (8) is located above the first cross rod (6), the first vertical rod (5) is provided with a receiving hole for receiving the second vertical rod (7), the second vertical rod (7) is located in the receiving hole, the second vertical rod (7) can lift relative to the first vertical rod (5) through the receiving hole, and the second vertical rod (7) is movably connected with the first vertical rod (5) through a locking nut (9) or a bolt.
3. The lifting platform for network engineering construction as claimed in claim 2, wherein when the second vertical rod (7) is in an extended state relative to the first vertical rod (5), the lower portion of the second vertical rod (7) is connected to the first vertical rod (5) through a locking nut (9) or a bolt, and when the second vertical rod (7) is in a retracted state relative to the first vertical rod (5), the upper portion of the second vertical rod (7) is connected to the first vertical rod (5) through a locking nut (9) or a bolt.
4. The lifting platform for network engineering construction as claimed in claim 1, wherein the access door is a barrier access door, the barrier access door comprises a barrier door body (10), a third vertical rod (11) and a third horizontal rod (12), the barrier door body (10) is provided with a third vertical rod (11) accommodating hole, the third vertical rod (11) is movably connected with the barrier door body (10) through a locking nut (9) or a bolt, the third horizontal rod (12) is connected with the upper portion of the third vertical rod (11), and the third horizontal rod (12) is located above the barrier door body (10).
5. The lifting platform for network engineering construction as claimed in claim 4, wherein when the third vertical rod (11) is in an extended state relative to the fence door body (10), the lower portion of the third vertical rod (11) is connected to the fence door body (10) through the locking nut (9) or the bolt, and when the third vertical rod (11) is in a retracted state relative to the fence door body (10), the upper portion of the third vertical rod (11) is connected to the fence door body (10) through the locking nut (9) or the bolt.
6. The lifting platform for network engineering construction according to claim 1, characterized in that the support plate (13) is provided with a non-slip mat.
7. The elevating platform for network engineering construction as claimed in claim 1, wherein the supporting plate (13) is provided with at least one hook (14) at the left or right side thereof, and the supporting plate (13) is provided with at least one hook (14) at the front or rear side thereof.
CN202023144676.8U 2020-12-23 2020-12-23 Lifting platform for network engineering construction Expired - Fee Related CN214192472U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202023144676.8U CN214192472U (en) 2020-12-23 2020-12-23 Lifting platform for network engineering construction

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202023144676.8U CN214192472U (en) 2020-12-23 2020-12-23 Lifting platform for network engineering construction

Publications (1)

Publication Number Publication Date
CN214192472U true CN214192472U (en) 2021-09-14

Family

ID=77656096

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202023144676.8U Expired - Fee Related CN214192472U (en) 2020-12-23 2020-12-23 Lifting platform for network engineering construction

Country Status (1)

Country Link
CN (1) CN214192472U (en)

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Address after: 130000 room 1509-13, building 1, zengcube building, intersection of South Huancheng Road and Herong Road, Jingyue high tech Industrial Development Zone, Changchun City, Jilin Province

Patentee after: Jilin Yuntong Technology Co.,Ltd.

Address before: 130000 room 1503, building 1, Zhengda cube building, intersection of South Huancheng Road and Herong Road, Jingyue District, Changchun City, Jilin Province

Patentee before: Jilin Yuntong Network Engineering Co.,Ltd.

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CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20210914