CN212456213U - a fixed base - Google Patents
a fixed base Download PDFInfo
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- CN212456213U CN212456213U CN202022043907.XU CN202022043907U CN212456213U CN 212456213 U CN212456213 U CN 212456213U CN 202022043907 U CN202022043907 U CN 202022043907U CN 212456213 U CN212456213 U CN 212456213U
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Abstract
本实用新型提供了一种固定底座，包括通用底座、锚杆应力计、螺旋锚杆和数据处理器，所述通用底座安装于锚杆应力计上，用于与其他设备进行连接；所述锚杆应力计安装于螺旋锚杆上，用于监测通用底座与螺旋锚杆之间的应力大小；所述螺旋锚杆采用螺旋方式嵌入土壤中，用于为通用底座提供有效的力；所述数据处理器用于收集和处理锚杆应力计所反馈的数据。本实用新型提供了一种能快速在野外土地上安装的固定底座，以供其他设备竖立安装使用，有效地解决了在野外安装竖立设备时常用的通过挖坑、预埋钢筋底座、浇筑混凝土的常用工艺操作的复杂与麻烦；同时具备安装工艺简单，节省时间，同时能监测后期使用效果的功能。
The utility model provides a fixed base, comprising a universal base, an anchor rod stress gauge, a screw anchor rod and a data processor. The universal base is mounted on the anchor rod stress gauge and is used for connection with other equipment; the anchor rod The rod stress gauge is installed on the screw bolt to monitor the stress between the universal base and the screw anchor; the screw bolt is embedded in the soil in a spiral manner to provide effective force for the universal base; the data The processor is used to collect and process the data fed back by the bolt stress gauge. The utility model provides a fixed base that can be quickly installed on the field land for the erection and installation of other equipment, and effectively solves the problems of digging holes, pre-embedding steel bases and pouring concrete commonly used when erecting equipment in the field. The common process operation is complicated and troublesome; at the same time, it has the function of simple installation process, saving time, and monitoring the effect of later use.
Description
Technical Field
The utility model relates to an open-air equipment fixing technical field especially relates to an adopt spiral installation, be used for the unable adjustment base of fixed soil.
Background
Based on various requirements such as data acquisition and structural object state monitoring, various electronic and mechanical equipment is often required to be installed and fixed in the field; when the equipment is installed on the field land, due to poor ground flatness and poor soil mechanical property, in order to meet the requirement of stable installation of the equipment, a common method is to dig a pit on the land, then put a reinforcing steel bar frame into the pit, then pour concrete, and install the equipment on a stud leaked from the reinforcing steel bar frame after the concrete is solidified; the flatness of the installation plane is ensured through the concrete surface modeling, and meanwhile, the base has heavier self weight to ensure the stability of the installation equipment through the combination of the reinforcing steel frame and the concrete.
There are several problems with pouring the foundation by concrete: the first is that digging a pit requires a long time and a large labor load, and no proper working machine is available; secondly, the concrete is prepared in the field by transporting sand, cement and water, and the materials are heavy and difficult to transport; the third is that a curing and hardening process is required for a certain period of time after concrete pouring, which takes a long time, affects the working efficiency, and is greatly affected by the weather.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a have simple and can effectively save time of installation technology, can install fast on open-air soil, can supply other equipment to erect the unable adjustment base that the installation used.
In order to achieve the purpose, the utility model provides a fixed base, which comprises a general base, an anchor stress meter, a spiral anchor rod and a data processor, wherein the general base is arranged on the anchor stress meter and is used for being connected with other equipment; the anchor rod stress meter is arranged on the spiral anchor rod and used for monitoring the stress between the universal base and the spiral anchor rod; the spiral anchor rod is embedded into soil in a spiral mode and used for providing effective force for the universal base; the data processor is used for collecting and processing data fed back by the anchor rod stress meter;
preferably, the spiral anchor rod and the anchor rod stress meter are provided with one or more than one, and are fixedly arranged in a one-to-one mode respectively.
As a further aspect of the present invention: the universal base comprises a connecting pipe and a mounting plate, one end of the connecting pipe is mounted on the mounting plate, and the other end of the connecting pipe is connected with the anchor rod stress meter and is used for supporting the mounting plate and facilitating the detection of the anchor rod stress meter on the mounting plate; the mounting plate is provided with one or more than one waist-shaped slot holes, and the waist-shaped slot holes are arranged in an annular array at the central position of the mounting plate respectively and are used for mounting other equipment;
preferably, the connecting pipe is provided with one or more than one piece;
preferably, the connecting pipe is a square steel pipe.
As a further aspect of the present invention: the anchor rod stress meter comprises a hollow sleeve, a hollow steel pipe, a screw and a stress detection device which are sequentially connected from bottom to top, wherein the lower end of the hollow sleeve is connected with one end of the spiral anchor rod and is used for transmitting the stress of the spiral anchor rod to the stress detection device arranged in the central sleeve; the hollow steel pipe is used for connecting the hollow sleeve and the screw; the upper end of the screw is connected with one end of the connecting pipe through a gasket and a nut so as to realize the connection of the anchor rod stress meter and the universal base; the stress detection device is arranged in the hollow sleeve and used for detecting stress;
preferably, the stress detection device comprises a steel string for inducing stress change and a sinusoidal signal primary processor, and stress change data induced by the steel string is processed by the sinusoidal signal primary processor and transmitted to the data processor.
As a further aspect of the present invention: the data processor is installed on general base, and with the stress detection device adopts the electricity to be connected for collect and handle the data that stock stress meter fed back, and it includes antenna and collection accuse ware, antenna and collection accuse ware are installed respectively on the connecting pipe, just the collection accuse ware passes through the electricity with sinusoidal signal preliminary treatment ware and is connected for receive sinusoidal signal preliminary treatment ware's data, and convey to the switch board through the antenna in, so that operating personnel carries out relevant operation.
As a further aspect of the present invention: the spiral anchor rod comprises an anchor rod main body, an opening and closing spiral blade group, conical spiral blades and a pull rod, wherein the opening and closing spiral blade group, the conical spiral blades and the pull rod are respectively arranged on the anchor rod main body;
preferably, the anchor rod main body comprises a rod body, a cone, a clamping platform and an external thread, wherein the cone is arranged at the lower end of the rod body and is used for extruding hard substances such as stones and the like to the outside when the anchor rod main body is embedded into soil; the clamping platform is arranged at the upper end of the rod body and used for enabling the wrench to clamp and manually rotate under an emergency condition so that the rod body can be drilled into soil; the external thread is fixedly arranged at the upper end of the clamping platform, and the extension end of the external thread is used for being in threaded connection with the hollow sleeve; the external thread is also provided with a first adjusting nut and a second adjusting nut, and the pull rod is connected with the rod body through the first adjusting nut and the second adjusting nut;
preferably, the opening and closing spiral blade group comprises a first opening and closing spiral blade, a second opening and closing spiral blade, a third opening and closing spiral blade and a fourth opening and closing spiral blade, the first opening and closing spiral blade and the second opening and closing spiral blade are connected in a meshing mode, the third opening and closing spiral blade and the fourth opening and closing spiral blade are connected in a meshing mode, and the structures of the first opening and closing spiral blade, the second opening and closing spiral blade, the third opening and closing spiral blade and the fourth opening and closing spiral blade are all the same;
preferably, the pull rod is further provided with a first pin shaft pair, a semi-U-shaped ring, a second pin shaft pair and a cross rod, the semi-U-shaped ring, the U-shaped ring and the cross rod are respectively arranged on the pull rod, the pull rod is divided into two sections by the U-shaped ring, the semi-U-shaped ring is arranged at the extending end of the first section, and the cross rod is arranged at the extending end of the second section; the first pin shaft pair is used for connecting the pull rod with the first opening and closing spiral blade and the second opening and closing spiral blade respectively, and the second pin shaft pair is used for connecting the pull rod with the third opening and closing spiral blade and the fourth opening and closing spiral blade respectively and is used for controlling the first opening and closing spiral blade, the second opening and closing spiral blade, the third opening and closing spiral blade and the fourth opening and closing spiral blade to be opened or stored simultaneously; the cross rod is connected with the external thread on the anchor rod main body through the first adjusting nut and the second adjusting nut so as to realize the connection between the pull rod and the anchor rod main body.
As a further aspect of the present invention: the cross rod is detachably arranged on the pull rod.
As a further aspect of the present invention: the first opening and closing spiral blade comprises a rotating hole, a control port, a meshing gear, a main body and a variable diameter blade, wherein the meshing gear is arranged on the main body and is coaxially arranged with the rotating hole arranged on the main body; the control port is arranged on the meshing gear and used for enabling the pull rod to apply a rotating moment to the main body and enabling the main body to rotate relative to the meshing gear by taking the axis of the rotating hole as a center; one end of the variable-diameter blade is connected with the main body, and the section of the part of the variable-diameter blade connected with the main body is of a square structure, so that the strength of the connecting part of the variable-diameter blade is effectively enhanced;
preferably, the cross section of the extending end of the variable diameter blade is flat and rectangular, so that the variable diameter blade can effectively bear a larger vertical acting force of soil, and further provides sufficient ground grabbing force for the universal base;
preferably, the surface of the variable diameter blade is in a spiral blade shape, so that the variable diameter blade can automatically convert torque into downward pressure under the action of horizontal torque, and the opening of the spiral blade is assisted to open and close.
As a further aspect of the present invention: the side of the variable diameter blade is also provided with a soil breaking ridge, and the soil breaking ridge is used for breaking soil.
Use the technical scheme of the utility model, following beneficial effect has:
(1) the utility model provides a fixed base which can be quickly installed on the field land, so as to be used for other equipment to be installed and used, thus effectively solving the complexity and trouble of the common technical operation of digging, pre-embedding the reinforcing steel bar base and pouring concrete when the equipment is installed and erected in the field; meanwhile, the device has the functions of simple installation process, time saving and capability of monitoring the later-stage use effect.
(2) The utility model discloses a set up multiunit annular kidney slot hole on the mounting panel that is used for installing other equipment to effectively realize the installation demand of different equipment.
(3) The utility model discloses a set up stress detection device to effectively detect the stress in the use, through the real-time supervision to its stress in the use, with the condition that effectively prevents to take place the pretightning force inefficacy because of long-term the use.
(4) The utility model discloses a set up the lower extreme of stock main part into conical structure to guarantee that the stock main part can extrude the hard materials such as stone toward the outside effectively at the in-process of embedding soil, so that in its smooth embedding soil.
(5) The utility model discloses in set up the helical blade that opens and shuts in the stock main part to set to can open simultaneously or accomodate two sets ofly to effectively guarantee the synchronous operation of the helical blade that opens and shuts.
(6) The utility model discloses in set up to square structure through the cross-section at the position that the reducing blade in the helical blade that will open and shut links to each other with the main part to effectively guarantee the joint strength between helical blade and the main part.
(7) The utility model discloses in set up the cross-section through the extension end of the reducing blade among the helical blade that will open and shut into flat rectangular to effectively guarantee that it can bear the vertical effort of great soil, and then provide sufficient land fertility of grabbing for general base.
(8) The utility model discloses in set up to the helical blade form through the surface that will open and shut the reducing blade among the helical blade, make it under horizontal moment of torsion effect, can convert the moment of torsion into the holding down force automatically, opening of helping hand open and shut helical blade.
(9) The utility model discloses in set a plurality of, and adopt the mode that the one-to-one set up respectively through with spiral stock, stock stressometer and connecting pipe to effectively guarantee its grip to soil.
In addition to the above-described objects, features and advantages, the present invention has other objects, features and advantages. The present invention will be described in further detail with reference to the drawings.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification. In the drawings:
fig. 1 is an axial view of the overall structure of the present invention;
FIG. 2 is a schematic sectional view of the connection between the anchor stress gauge and the screw anchor of the present invention;
fig. 3 is a schematic view of the axial explosion of the spiral anchor rod of the present invention;
fig. 4 is an axial view of the middle opening/closing helical blade of the present invention.
Wherein (A) ─
1: general base, 1.1: connecting pipe, 1.2: mounting plate, 1.3: a waist-shaped slot;
2: anchor stress meter, 2.1: hollow sleeve, 2.2: hollow steel pipe, 2.3: gasket, 2.4: nut, 2.5: screw, 2.6: antenna, 2.7: a centralized controller;
3: spiral anchor rod, 3.1: stock main part, 3.2: first bolt, 3.3: first helical blade that opens and shuts, 3.3.1: control port, 3.3.2: meshing gear, 3.3.3: main body, 3.3.4: rotation hole, 3.3.5: variable diameter blade, 3.3.6: broken edge, 3.4: bolt mounting hole, 3.5: second bolt, 3.6: second opening and closing helical blade, 3.7: first opening and closing helical blade accommodation hole, 3.8: third bolt, 3.9: third open helical blade, 3.10: fourth spiral blade, 3.11: fourth bolt, 3.12: conical helical blade, 3.13: shaft, 3.14: clamping platform, 3.15: through groove, 3.16: external thread, 3.17: locking groove, 3.18: first adjusting nut, 3.19: second adjusting nut, 3.20: pull rod, 3.20.1: pin pair one, 3.20.2: half U-ring, 3.20.3: u-ring, 3.20.4: pin pair two, 3.20.5: cross bar, 3.21: and (5) buckling an impact hammer.
Detailed Description
The embodiments of the invention will be described in detail hereinafter with reference to the accompanying drawings, but the invention can be implemented in many different ways, which are defined and covered by the claims.
Referring to fig. 1, the utility model provides a fixing base, which comprises a universal base 1, an anchor stress meter 2, a spiral anchor rod 3 and a data processor,
the universal base 1 comprises a connecting pipe 1.1 and a mounting plate 1.2, one end of the connecting pipe 1.1 is mounted on the mounting plate 1.2, and the other end of the connecting pipe is connected with the anchor rod stress meter 2 and is used for supporting the mounting plate 1.2 and facilitating the detection of the anchor rod stress meter 2 on the mounting plate 1.2; the mounting plate 1.2 is provided with a plurality of layers of waist-shaped slotted holes 1.3 which are sequentially arranged from inside to outside by taking the center of the mounting plate 1.2 as a dot, and the waist-shaped slotted holes 1.3 are respectively arranged in an annular array at the center position of the mounting plate 1.2 and are used for being connected with other equipment (not marked);
the anchor rod stress meter 2 comprises a hollow sleeve 2.1, a hollow steel pipe 2.2, a gasket 2.3, a nut 2.4 and a screw rod 2.5, wherein the hollow sleeve 2.1, the hollow steel pipe 2.2 and the screw rod 2.5 are respectively connected from bottom to top, the lower end of the hollow sleeve 2.1 is connected with one end of the spiral anchor rod 3, and the upper end of the screw rod 2.5 is connected with the connecting pipe 1.1 through the gasket 2.3 and the nut 2.4;
preferably, a steel string (not marked) for inducing stress change and a sine signal primary processor are arranged in the hollow steel pipe 2.2.
Preferably, the spiral anchor rod 3 and the anchor rod stress meter 2 are preferably respectively provided with 4 pieces, and are respectively arranged in a one-to-one mode so as to effectively support the universal base 1.
As a further embodiment of the present invention: referring to fig. 2, the data processor includes an antenna 2.6 and a centralized controller 2.7, the antenna 2.6 and the centralized controller 2.7 are respectively installed on the connection pipe 1.1, and the centralized controller 2.7 is electrically connected with the sinusoidal signal primary processor, and is configured to receive data of the sinusoidal signal primary processor, and transmit the data to a control cabinet (not labeled) through the antenna 2.6, so that an operator can perform related operations.
As a further embodiment of the present invention: referring to fig. 3, the spiral anchor rod 3 includes an anchor rod main body 3.1, a first open-close spiral blade 3.3, a second open-close spiral blade 3.6, a third open-close spiral blade 3.9, a fourth open-close spiral blade 3.10, a conical spiral blade 3.12 and a pull rod 3.20;
the anchor rod main body 3.1 comprises a rod body 3.13, a cone (not marked), a clamping platform 3.14 and an external thread 3.16, wherein the cone (not marked) is arranged at the lower end of the rod body 3.13 so as to effectively ensure that when the anchor rod main body 3.1 is embedded into soil, hard substances such as stones and the like can be extruded outwards to be smoothly embedded; the clamping platform 3.14 is arranged at the upper end of the rod body 3.13 and is used for enabling the wrench to clamp and manually rotate under an emergency condition so that the rod body 3.13 can be drilled into soil; the external thread 3.16 is fixedly arranged at the upper end of the clamping platform 3.14, the extending end of the external thread is used for being in threaded connection with the hollow sleeve 2.1, a first adjusting nut 3.18 and a second adjusting nut 3.19 are further arranged on the external thread, and the pull rod 3.20 is connected with the rod body 3.13 through the first adjusting nut 3.18 and the second adjusting nut 3.19;
the first opening and closing helical blade 3.3 is arranged in the first opening and closing helical blade accommodating hole 3.7 and is spirally arranged in a bolt mounting hole 3.4 arranged on the rod body 3.13 through a first bolt 3.2 so as to fix the first opening and closing helical blade 3.3 and the rod body 3.13;
the second opening and closing helical blade 3.6 is arranged in a second opening and closing helical blade accommodating hole (not marked) and is spirally arranged on the rod body 3.13 through a second bolt 3.5 so as to fix the second opening and closing helical blade 3.6 and the rod body 3.13;
the third open helical blade 3.9 is arranged in a third open helical blade accommodating hole (not marked) and is spirally arranged on the rod body 3.13 through a third bolt 3.8 so as to fix the third open helical blade 3.9 and the rod body 3.13;
the fourth spiral blade 3.10 is arranged in a fourth spiral blade accommodating hole (not marked) and is spirally arranged on the rod body 3.13 through a fourth bolt 3.11 so as to fix the fourth spiral blade 3.10 and the rod body 3.13;
the conical helical blade 3.12 is spirally wound on the shaft 3.13.
Preferably, the external thread 3.16 is further provided with a through groove 3.15 and an impact hammer buckle 3.21, the through groove 3.15 is arranged along the radial direction of the external thread 3.16, so that the draw bar can extend out of the bar body 3.13 through the through groove 3.15 to be connected with the first adjusting nut 3.18 and the second adjusting nut 3.19 in a matching manner; the impact hammer buckle 3.21 is arranged on the extending end of the external thread 3.16, and is provided with a locking groove 3.17 for locking and fixing an impact hammer (not marked) arranged on the impact hammer buckle 3.21.
Preferably, the pull rod 3.20 is further provided with a first pin pair 3.20.1, a half U-shaped ring 3.20.2, a U-shaped ring 3.20.3, a second pin pair 3.20.4 and a cross bar 3.20.5, the half U-shaped ring 3.20.2 is arranged at one end of the pull rod 3.20, the extending end of the half U-shaped ring is provided with a first pin pair 3.20.1, and the U-shaped ring 3.20.3 is arranged on the pull rod 3.20 and used for mounting the second pin pair 3.20.4; the first pin pair 3.20.1 connects the pull rod 3.20 with the first opening and closing helical blade 3.3 and the second opening and closing helical blade 3.6, and the second pin pair 3.20.4 connects the pull rod 3.20 with the third opening and closing helical blade 3.9 and the fourth opening and closing helical blade 3.10, so that the first opening and closing helical blade 3.3, the second opening and closing helical blade 3.6, the third helical blade 3.9 and the fourth helical blade 3.10 are opened or stored synchronously; the cross bar 3.20.5 is detachably mounted at the end of the pull rod 3.20 and connected with the first adjusting nut 3.18 and the second adjusting nut 3.19 to realize the connection between the pull rod 3.20 and the first adjusting nut 3.18 and the second adjusting nut 3.19.
As a further embodiment of the present invention: referring to fig. 4, taking the first opening and closing helical blade 3.3 as an example, the opening and closing helical blade includes a control port 3.3.1, a meshing gear 3.3.2, a main body 3.3.3, a rotating hole 3.3.4 and a variable diameter blade 3.3.5; the main body 3.3.3 is provided with a meshing gear 3.3.2, the control port 3.3.1 is connected to the meshing gear 3.3.2, and the pull rod 3.20 can apply a rotating moment to the main body 3.3.3 through the control port 3.3.1 to enable the main body 3.3.3 to rotate around the rotating hole 3.3.4; the section of the part, connected with the main body 3.3.3, of the variable diameter blade 3.3.5 is square and has stronger strength, and the section of the tail end of the variable diameter blade 3.3.5 is flat and rectangular, so that the variable diameter blade can bear larger vertical acting force of soil and further provide ground grabbing force for the universal base 1;
preferably, the side edge of the variable diameter blade 3.3.5 is also provided with a soil breaking ridge 3.3.6, so that the soil can be easily broken.
Preferably, the surface of the variable diameter blade 3.3.5 is in a spiral blade shape, so that the variable diameter blade can automatically convert torque into downward pressure under the action of horizontal torque, and the opening of the spiral blade is assisted to open and close.
The working steps of the utility model are as follows:
1. marking the land according to the size of the mounting hole of the universal base, and primarily leveling the surface of the land;
2. mounting the spiral anchor rod in a preparation state on the impact hammer (the spiral anchor rod in the preparation state has the opening and closing spiral blades in a tightened state, and the first adjusting nut and the second adjusting nut are adjusted in place to ensure that the state of the opening and closing spiral blades is not changed);
3. starting the impact hammer and adjusting to a rotary propulsion gear;
4. drilling a spiral anchor rod into the soil body;
5. when the conical spiral blade at the tail part of the rod body is just immersed into soil, loosening the second adjusting nut to the maximum position, simultaneously screwing the first adjusting nut, and opening the opening spiral blade by a small angle;
6. the percussion drill is continuously used for driving the spiral anchor rod to drill, and at the moment, the opening and closing spiral blade automatically and completely opens under the action of soil;
7. meanwhile, under the control of the meshing gear and the pull rod, the four opening and closing spiral blades are synchronously opened in place, and at the moment, the tail part of the spiral anchor rod is basically and completely immersed in the soil, so that the first-step installation is realized;
8. repeating the steps 5 to 7 to complete the installation of the rest spiral anchor rods;
9. screwing an anchor rod stress meter on a thread at the tail end of the spiral anchor rod by using a tool, and introducing a communication line into a line control access centralized controller on the universal base;
10. the universal base is arranged on screws of four anchor rod stressometers and is fastened through gaskets and nuts, and is adjusted to be in a proper pretightening force state (the pretightening force can be checked in real time through a data processor, the change condition of the pretightening force can be monitored in real time through the data processor subsequently, when the pretightening force is completely lost or suddenly changed, the abnormal conditions such as installation failure or soil sliding can be judged to occur on the site, and a person can be sent to the site to handle and readjust the installation);
11. and finishing the installation of the whole base.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022043907.XU CN212456213U (en) | 2020-09-17 | 2020-09-17 | a fixed base |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022043907.XU CN212456213U (en) | 2020-09-17 | 2020-09-17 | a fixed base |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212456213U true CN212456213U (en) | 2021-02-02 |
Family
ID=74474775
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022043907.XU Expired - Fee Related CN212456213U (en) | 2020-09-17 | 2020-09-17 | a fixed base |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212456213U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111998215A (en) * | 2020-09-17 | 2020-11-27 | 湖南联智科技股份有限公司 | Fixed base |
-
2020
- 2020-09-17 CN CN202022043907.XU patent/CN212456213U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111998215A (en) * | 2020-09-17 | 2020-11-27 | 湖南联智科技股份有限公司 | Fixed base |
| CN111998215B (en) * | 2020-09-17 | 2024-07-23 | 湖南联智科技股份有限公司 | Fixed base |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20210202 |
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| CF01 | Termination of patent right due to non-payment of annual fee |