CN114436149A - Automatic lifting system for antenna installation - Google Patents
Automatic lifting system for antenna installation Download PDFInfo
- Publication number
- CN114436149A CN114436149A CN202210371212.5A CN202210371212A CN114436149A CN 114436149 A CN114436149 A CN 114436149A CN 202210371212 A CN202210371212 A CN 202210371212A CN 114436149 A CN114436149 A CN 114436149A
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- CN
- China
- Prior art keywords
- driving
- transmission
- driven
- antenna installation
- pipe
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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.)
- Pending
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
- B66F3/00—Devices, e.g. jacks, adapted for uninterrupted lifting of loads
- B66F3/08—Devices, e.g. jacks, adapted for uninterrupted lifting of loads screw operated
- B66F3/10—Devices, e.g. jacks, adapted for uninterrupted lifting of loads screw operated with telescopic sleeves
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
- B66F3/00—Devices, e.g. jacks, adapted for uninterrupted lifting of loads
- B66F3/08—Devices, e.g. jacks, adapted for uninterrupted lifting of loads screw operated
- B66F3/20—Devices, e.g. jacks, adapted for uninterrupted lifting of loads screw operated actuated through multiple or change-speed gearings
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
- B66F3/00—Devices, e.g. jacks, adapted for uninterrupted lifting of loads
- B66F3/44—Devices, e.g. jacks, adapted for uninterrupted lifting of loads with self-contained electric driving motors
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
- B66F3/00—Devices, e.g. jacks, adapted for uninterrupted lifting of loads
- B66F3/46—Combinations of several jacks with means for interrelating lifting or lowering movements
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/50—Structural association of antennas with earthing switches, lead-in devices or lightning protectors
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mechanical Engineering (AREA)
- Structural Engineering (AREA)
- Support Of Aerials (AREA)
Abstract
The invention relates to an antenna installation device, in particular to an automatic lifting system with high expansion ratio for antenna installation, which is used for overcoming the defects that the existing lifting device for antenna installation is limited by the expansion ratio and a limiting device, so that the closing height is larger, and the existing lifting device cannot adapt to a narrow working space. The lifting mechanism of the automatic lifting system for antenna installation realizes a lifting function through the driving device and the transmission device, the lifting mechanism is internally provided with the first lifting device and the second lifting device, wherein the first lifting device realizes self-locking at any height, and through the combination of the first lifting device and the second lifting device, the invention can realize larger expansion ratio and can adapt to narrow working space.
Description
Technical Field
The invention relates to an antenna installation device, in particular to an automatic lifting system with high expansion ratio for antenna installation.
Background
When the antenna is used in some specific environments, the antenna is often required to be lifted to a certain height for installation in a narrow space. The closing height of the existing antenna lifting device is generally 1 m-3 m, and the reason is that: firstly, if the closing height is small, the upper and lower limiting devices cannot be installed, and the reliability of the lifting process cannot be ensured; secondly, if the closing height is small, the height of the lead screw inside the antenna is limited, and the limit block is installed, so that the existing antenna lifting device is difficult to achieve high expansion ratio.
Disclosure of Invention
The invention aims to solve the defects that the existing lifting device for antenna installation is limited by a telescopic ratio and a limiting device, so that the closing height is large, and the existing lifting device cannot adapt to a narrow working space, and provides an automatic lifting system for antenna installation.
In order to solve the defects of the prior art, the invention provides the following technical solutions:
an automatic lifting system for antenna installation, its special character lies in: comprises a base, a lifting mechanism arranged on the base, a driving device and a transmission device;
the lifting mechanism comprises a mounting flange, a second lifting device arranged between the mounting flange and the base, and a first lifting device arranged in the second lifting device;
the first lifting device comprises a driven rod, a plurality of transmission rods and a driving rod which are sequentially sleeved from inside to outside, the bottom of the driving rod is connected with the output end of the driving device through the transmission device, a bearing is arranged on the driving rod, the inner ring of the bearing is fixedly connected with the driving rod, and the outer ring of the bearing is fixedly connected with the base through a bearing pressing plate arranged on the base; the top of the driven rod is fixedly connected with the mounting flange; the outer walls of the plurality of driving rods and the outer walls of the driven rods are provided with driving threads; the lower end of the outer wall of the driven rod and the lower ends of the outer walls of the plurality of transmission rods are respectively provided with a first limiting ring protruding in the radial direction, the upper end of the inner wall of the driving rod and the upper ends of the inner walls of the plurality of transmission rods are respectively provided with a first limiting boss matched with the first limiting ring, and the inner wall of each first limiting boss is provided with a transmission thread;
the second lifting device comprises a driven pipe, a plurality of transmission pipes and a fixed pipe which are sequentially sleeved from inside to outside, the top of the driven pipe is fixedly connected with the mounting flange, and the bottom of the fixed pipe is fixedly connected with the base; the lower ends of the outer walls of the driven pipes and the lower ends of the outer walls of the plurality of transmission pipes are respectively provided with a second limiting ring which protrudes radially, and the upper ends of the inner walls of the plurality of transmission pipes and the upper ends of the inner walls of the fixed pipes are respectively provided with a second limiting block which is matched with the second limiting ring;
a plurality of driving pipe inner walls, fixed intraductal wall are provided with the guide way along vertical direction, driven outside of tubes wall, a plurality of driving pipe outer wall are provided with the guide key with the guide way adaptation.
Further, the outside of the driving rod is provided with a spiral spring, and two ends of the spiral spring are respectively fixedly connected with the mounting flange and the base and used for fixing an antenna cable and protecting the cable from being crushed and damaged.
Furthermore, a plurality of countersunk head screws which are uniformly distributed on the circumference are arranged on the second limiting ring and are used for connecting and fastening the second limiting ring with the driven pipe and the transmission pipe.
Further, the bearing pressure plate is of an annular structure.
Further, the driving device is a direct current motor, and the transmission device is a reduction gear pair.
Further, the pitch of the transmission thread is 15 cm.
Furthermore, the driven rod, the plurality of transmission rods and the driving rod are all made of 45# cold drawing polished round steel for ensuring hardness and wear resistance.
Furthermore, the driven pipe, the plurality of transmission pipes and the fixed pipe are all made of aluminum alloy pipes subjected to anodic hard oxidation treatment.
Furthermore, the first lifting device comprises a driven rod, three transmission rods and a driving rod which are sequentially sleeved from inside to outside; the second lifting device comprises a driven pipe, three transmission pipes and a fixed pipe which are sequentially sleeved from inside to outside.
Compared with the prior art, the invention has the beneficial effects that:
(1) the invention relates to an automatic lifting system for antenna installation, which comprises a base, a lifting mechanism, a driving device and a transmission device, wherein the lifting mechanism is arranged on the base; the lifting mechanism of the automatic lifting system realizes a lifting function through the driving device and the transmission device, the lifting mechanism is internally provided with the first lifting device and the second lifting device, wherein the first lifting device realizes self-locking at any height, and through the combination of the first lifting device and the second lifting device, the invention can realize larger expansion ratio and can adapt to narrow working space.
(2) The automatic lifting system for antenna installation is provided with the spiral spring outside the second lifting device, the spiral spring can be lifted synchronously along with the lifting mechanism, and the spiral spring can be used for fixing cables of the antenna and protecting the cables from being crushed and damaged.
Drawings
FIG. 1 is a schematic structural diagram of an embodiment of an automatic lifting system for antenna installation according to the present invention;
FIG. 2 is a schematic structural diagram of a first lifting device according to an embodiment of the present disclosure;
fig. 3 is a schematic structural diagram of a second lifting device in the embodiment of the present invention.
The reference numerals are explained below: 1-a base; 2-a lifting mechanism, 21-a mounting flange, 22-a first lifting device, 221-a driven rod, 222-a transmission rod, 223-a driving rod, 224-a first limit ring and 225-a first limit boss; 23-a second lifting device, 231-a driven pipe, 232-a transmission pipe, 233-a fixed pipe, 234-a second limit ring and 235-a second limit block; 3-a drive device; 4-a transmission device; 5-a bearing; 6-bearing pressure plate.
Detailed Description
The invention will be further described with reference to the drawings and exemplary embodiments.
Referring to fig. 1, an automatic lifting system for antenna installation includes a base 1, a lifting mechanism 2 disposed on the base 1, a driving device 3, and a transmission device 4.
The lifting mechanism 2 comprises a mounting flange 21, a second lifting device 23 arranged between the mounting flange 21 and the base 1, and a first lifting device 22 arranged inside the second lifting device 23.
Referring to fig. 2, the first lifting device 22 comprises a driven rod 221, three driving rods 222 and a driving rod 223 which are sequentially sleeved from inside to outside, and 45# cold drawing polished round steel is adopted for ensuring hardness and wear resistance; the bottom of the driving rod 223 is connected with the output end of the driving device 3 through the transmission device 4, a bearing 5 is arranged on the driving rod 223, the inner ring of the bearing 5 is fixedly connected with the driving rod 223, and the outer ring of the bearing 5 is fixedly connected with the base 1 through a bearing pressing plate 6 arranged on the base 1; the top of the driven rod 221 is fixedly connected with the mounting flange 21 through a nut; the outer walls of the three driving rods 222 and the outer wall of the driven rod 221 are provided with driving threads; the lower ends of the outer walls of the three driving rods 222 and the lower ends of the outer walls of the driven rods 221 are respectively provided with a first limiting ring 224 protruding in the radial direction, the upper ends of the inner walls of the driving rods 223 and the upper ends of the inner walls of the three driving rods 222 are respectively provided with a first limiting boss 225 matched with the first limiting ring 224, and the inner wall of the first limiting boss 225 is provided with a driving thread; the driving rod 223 and the driving rod 222, the adjacent driving rod 222 and the driven rod 221 are mutually nested through the driving threads in the lifting process, and the self-locking function of any height can be realized.
Referring to fig. 3, the second lifting device 23 includes a driven pipe 231, three transmission pipes 232, and a fixed pipe 233, which are sequentially sleeved from inside to outside, and all of which are made of aluminum alloy pipes subjected to anodic hard oxidation treatment; the top of the driven pipe 231 is fixedly connected with the mounting flange 21, and the bottom of the fixed pipe 233 is fixedly connected with the base 1; the lower end of the outer wall of the driven pipe 231 and the lower ends of the outer walls of the three transmission pipes 232 are respectively provided with a second limiting ring 234 which protrudes radially, six countersunk screws which are uniformly distributed circumferentially are arranged on the second limiting ring 234, the upper ends of the inner walls of the three transmission pipes 232 and the upper end of the inner wall of the fixed pipe 233 are respectively provided with a second limiting block 235, and the second limiting ring 234 is matched with the second limiting block 235 for mechanical limiting; three drive tube 232 inner wall, fixed pipe 233 inner wall are provided with the guide way along vertical direction, from drive tube 231 outer wall, three drive tube 232 outer wall be provided with the guide way guiding key of adaptation, stability when both can guaranteeing to go up and down can guarantee again between driven tube 231 and the drive tube 232, between the adjacent driven tube 231, from the tube 231 and fixed pipe 233 between can not mutual rotation.
The outer side of the driving rod 223 is provided with a spiral spring, and two ends of the spiral spring are respectively fixedly connected with the mounting flange 21 and the base 1, so that a cable of the antenna can be fixed, and the cable can be protected from being crushed and damaged.
In this embodiment, the driving device 3 is a dc motor, and the transmission device 4 is a reduction gear pair.
The working principle of the invention is as follows: when the folding machine is completely folded, the closing height of the automatic lifting system is less than 0.22 m; after the driving device 3 is started, the driving device 3 drives the driving rod 223 to drive the three transmission rods 222 to rotate through the transmission device 4, the driven rod 221 cannot rotate and can only rise linearly due to the fixed constraint of a nut, the driven rod 221 drives the three transmission rods 222 to rise sequentially through transmission threads, the driven rod 221 drives the driven pipe 231 to rise through the mounting flange 21, the driven pipe 231 drives the three transmission pipes 232 to rise sequentially through the second limiting ring 234 and the second limiting block 235, the heights of the driving rod 223 and the fixed pipe 233 are constant all the time until the automatic lifting system is completely unfolded, and the unfolding height of the automatic lifting system exceeds 0.72 m; during the lifting process, the driving device 3 is closed, and the first lifting device 22 can realize self-locking at any height.
The above embodiments are only used for illustrating the technical solutions of the present invention, and not for limiting the same, and it is obvious for a person skilled in the art to modify the specific technical solutions described in the foregoing embodiments or to substitute part of the technical features, and these modifications or substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions protected by the present invention.
Claims (9)
1. An automatic lifting system for antenna installation which characterized in that: comprises a base (1), a lifting mechanism (2) arranged on the base (1), a driving device (3) and a transmission device (4);
the lifting mechanism (2) comprises a mounting flange (21), a second lifting device (23) arranged between the mounting flange (21) and the base (1), and a first lifting device (22) arranged in the second lifting device (23);
the first lifting device (22) comprises driven rods (221), a plurality of transmission rods (222) and a driving rod (223), wherein the driven rods (221), the plurality of transmission rods (222) and the driving rod (223) are sequentially sleeved from inside to outside, the bottom of the driving rod (223) is connected with the output end of the driving device (3) through the transmission device (4), a bearing (5) is arranged on the driving rod (223), the inner ring of the bearing (5) is fixedly connected with the driving rod (223), and the outer ring of the bearing (5) is fixedly connected with the base (1) through a bearing pressing plate (6) arranged on the base (1); the top of the driven rod (221) is fixedly connected with the mounting flange (21); the outer walls of the plurality of driving rods (222) and the outer wall of the driven rod (221) are provided with driving threads; the lower end of the outer wall of the driven rod (221) and the lower ends of the outer walls of the plurality of driving rods (222) are respectively provided with a first limiting ring (224) protruding in the radial direction, the upper end of the inner wall of the driving rod (223) and the upper ends of the inner walls of the plurality of driving rods (222) are respectively provided with a first limiting boss (225) matched with the first limiting ring (224), and the inner wall of each first limiting boss (225) is provided with a driving thread;
the second lifting device (23) comprises a driven pipe (231), a plurality of transmission pipes (232) and a fixed pipe (233) which are sequentially sleeved from inside to outside, the top of the driven pipe (231) is fixedly connected with the mounting flange (21), and the bottom of the fixed pipe (233) is fixedly connected with the base (1); the lower end of the outer wall of the driven pipe (231) and the lower ends of the outer walls of the plurality of transmission pipes (232) are respectively provided with a second limiting ring (234) which protrudes radially, and the upper ends of the inner walls of the plurality of transmission pipes (232) and the upper ends of the inner walls of the fixed pipes (233) are respectively provided with a second limiting block (235) which is matched with the second limiting ring (234);
the inner walls of the transmission pipes (232) and the inner wall of the fixed pipe (233) are provided with guide grooves in the vertical direction, and the outer walls of the driven pipe (231) and the transmission pipes (232) are provided with guide keys matched with the guide grooves.
2. An automatic lifting system for antenna installation according to claim 1, characterized in that: and a spiral spring is arranged on the outer side of the driving rod (223), and two ends of the spiral spring are fixedly connected with the mounting flange (21) and the base (1) respectively.
3. An automatic lifting system for antenna installation according to claim 1 or 2, characterized in that: a plurality of countersunk head screws which are uniformly distributed on the circumference are arranged on the second limiting ring (234) and are used for connecting and fastening the second limiting ring (234) with the driven pipe (231) and the transmission pipe (232).
4. An automatic lifting system for antenna installation according to claim 3, characterized in that: the bearing pressure plate (6) is of an annular structure.
5. An automatic lifting system for antenna installation according to claim 4, characterized in that: the driving device (3) is a direct current motor, and the transmission device (4) is a reduction gear pair.
6. An automatic lifting system for antenna installation according to claim 5, characterized in that: the pitch height of the transmission screw thread is 15 cm.
7. An automatic lifting system for antenna installation according to claim 6, characterized in that: the driven rod (221), the plurality of driving rods (222) and the driving rod (223) are all made of 45# cold drawing polished round steel.
8. An automatic lifting system for antenna installation according to claim 5, characterized in that: the driven pipe (231), the plurality of transmission pipes (232) and the fixed pipe (233) are all made of aluminum alloy pipes subjected to anodic hard oxidation treatment.
9. An automatic lifting system for antenna installation according to claim 5, characterized in that: the first lifting device (22) comprises a driven rod (221), three transmission rods (222) and a driving rod (223) which are sleeved from inside to outside in sequence; the second lifting device (23) comprises a driven pipe (231), three transmission pipes (232) and a fixed pipe (233) which are sequentially sleeved from inside to outside.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210371212.5A CN114436149A (en) | 2022-04-11 | 2022-04-11 | Automatic lifting system for antenna installation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210371212.5A CN114436149A (en) | 2022-04-11 | 2022-04-11 | Automatic lifting system for antenna installation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114436149A true CN114436149A (en) | 2022-05-06 |
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ID=81359412
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210371212.5A Pending CN114436149A (en) | 2022-04-11 | 2022-04-11 | Automatic lifting system for antenna installation |
Country Status (1)
| Country | Link |
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| CN (1) | CN114436149A (en) |
Citations (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0956846A2 (en) * | 1998-04-27 | 1999-11-17 | Dieter Gobbers | Wheelchair for invalids |
| WO2005082771A1 (en) * | 2004-02-10 | 2005-09-09 | Rocco Compagnone | Telescopic structure system implemented by a series of screw jacks |
| CN102491217A (en) * | 2011-12-12 | 2012-06-13 | 中国科学院长春光学精密机械与物理研究所 | Ball screw and sliding screw mutually nested type synchronous lifting photoelectric mast |
| CN203852038U (en) * | 2014-02-12 | 2014-10-01 | 江门市睿动康体医用科技有限公司 | Hoisting support |
| KR101974639B1 (en) * | 2018-07-03 | 2019-05-02 | (주)신우 프론티어 | Multi-stage screw-driven lifting device |
| CN209177916U (en) * | 2018-11-30 | 2019-07-30 | 嘉兴金鹏工具有限公司 | A kind of Multi-section retractable jack |
| CN110970702A (en) * | 2019-10-24 | 2020-04-07 | 南京吉凯微波技术有限公司 | Radar antenna heavy-load multisection synchronous servo elevator |
| CN110980572A (en) * | 2019-12-03 | 2020-04-10 | 浙江捷昌线性驱动科技股份有限公司 | Lifting upright post with low installation distance |
| CN211712529U (en) * | 2019-12-03 | 2020-10-20 | 浙江捷昌线性驱动科技股份有限公司 | Lifting upright post |
| CN213738369U (en) * | 2020-10-30 | 2021-07-20 | 江门市润生机电有限公司 | Multi-section electric push rod |
| CN113357509A (en) * | 2021-06-10 | 2021-09-07 | 上海追术科技有限公司 | Lifting upright post device |
| CN215048310U (en) * | 2021-02-04 | 2021-12-07 | 深圳市施罗德工业集团有限公司 | Multi-stage linkage lifting rod |
| CN215835254U (en) * | 2021-05-28 | 2022-02-15 | 深圳市兆威机电股份有限公司 | Linear motor and lifting device using same |
| CN114198468A (en) * | 2022-02-17 | 2022-03-18 | 西安索睿科技有限公司 | Free push rod multi-stage electric cylinder and design method |
-
2022
- 2022-04-11 CN CN202210371212.5A patent/CN114436149A/en active Pending
Patent Citations (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0956846A2 (en) * | 1998-04-27 | 1999-11-17 | Dieter Gobbers | Wheelchair for invalids |
| WO2005082771A1 (en) * | 2004-02-10 | 2005-09-09 | Rocco Compagnone | Telescopic structure system implemented by a series of screw jacks |
| CN102491217A (en) * | 2011-12-12 | 2012-06-13 | 中国科学院长春光学精密机械与物理研究所 | Ball screw and sliding screw mutually nested type synchronous lifting photoelectric mast |
| CN203852038U (en) * | 2014-02-12 | 2014-10-01 | 江门市睿动康体医用科技有限公司 | Hoisting support |
| KR101974639B1 (en) * | 2018-07-03 | 2019-05-02 | (주)신우 프론티어 | Multi-stage screw-driven lifting device |
| CN209177916U (en) * | 2018-11-30 | 2019-07-30 | 嘉兴金鹏工具有限公司 | A kind of Multi-section retractable jack |
| CN110970702A (en) * | 2019-10-24 | 2020-04-07 | 南京吉凯微波技术有限公司 | Radar antenna heavy-load multisection synchronous servo elevator |
| CN110980572A (en) * | 2019-12-03 | 2020-04-10 | 浙江捷昌线性驱动科技股份有限公司 | Lifting upright post with low installation distance |
| CN211712529U (en) * | 2019-12-03 | 2020-10-20 | 浙江捷昌线性驱动科技股份有限公司 | Lifting upright post |
| CN213738369U (en) * | 2020-10-30 | 2021-07-20 | 江门市润生机电有限公司 | Multi-section electric push rod |
| CN215048310U (en) * | 2021-02-04 | 2021-12-07 | 深圳市施罗德工业集团有限公司 | Multi-stage linkage lifting rod |
| CN215835254U (en) * | 2021-05-28 | 2022-02-15 | 深圳市兆威机电股份有限公司 | Linear motor and lifting device using same |
| CN113357509A (en) * | 2021-06-10 | 2021-09-07 | 上海追术科技有限公司 | Lifting upright post device |
| CN114198468A (en) * | 2022-02-17 | 2022-03-18 | 西安索睿科技有限公司 | Free push rod multi-stage electric cylinder and design method |
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| PB01 | Publication | ||
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Application publication date: 20220506 |
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| RJ01 | Rejection of invention patent application after publication |