CN113135528A - Suspension scissor type lifting platform - Google Patents
Suspension scissor type lifting platform Download PDFInfo
- Publication number
- CN113135528A CN113135528A CN202110420229.0A CN202110420229A CN113135528A CN 113135528 A CN113135528 A CN 113135528A CN 202110420229 A CN202110420229 A CN 202110420229A CN 113135528 A CN113135528 A CN 113135528A
- Authority
- CN
- China
- Prior art keywords
- gear
- worm
- mounting seat
- lifting platform
- interference fit
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000000725 suspension Substances 0.000 title abstract description 4
- 230000000149 penetrating effect Effects 0.000 claims abstract description 6
- 230000005540 biological transmission Effects 0.000 claims description 15
- 238000009434 installation Methods 0.000 claims description 12
- 238000012423 maintenance Methods 0.000 abstract description 3
- 230000008439 repair process Effects 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 9
- 238000000576 coating method Methods 0.000 description 4
- 239000011248 coating agent Substances 0.000 description 3
- 230000003028 elevating effect Effects 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 230000001276 controlling effect Effects 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000005536 corrosion prevention Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
Images
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
- B66F7/00—Lifting frames, e.g. for lifting vehicles; Platform lifts
- B66F7/06—Lifting frames, e.g. for lifting vehicles; Platform lifts with platforms supported by levers for vertical movement
- B66F7/0616—Suspended platforms, i.e. the load platform hangs from the base
-
- 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
- B66F7/00—Lifting frames, e.g. for lifting vehicles; Platform lifts
- B66F7/06—Lifting frames, e.g. for lifting vehicles; Platform lifts with platforms supported by levers for vertical movement
- B66F7/065—Scissor linkages, i.e. X-configuration
- B66F7/0666—Multiple scissor linkages vertically arranged
-
- 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
- B66F7/00—Lifting frames, e.g. for lifting vehicles; Platform lifts
- B66F7/28—Constructional details, e.g. end stops, pivoting supporting members, sliding runners adjustable to load dimensions
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H3/00—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion
- F16H3/02—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion without gears having orbital motion
- F16H3/20—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion without gears having orbital motion exclusively or essentially using gears that can be moved out of gear
- F16H3/22—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion without gears having orbital motion exclusively or essentially using gears that can be moved out of gear with gears shiftable only axially
- F16H3/30—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion without gears having orbital motion exclusively or essentially using gears that can be moved out of gear with gears shiftable only axially with driving and driven shafts not coaxial
- F16H3/32—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion without gears having orbital motion exclusively or essentially using gears that can be moved out of gear with gears shiftable only axially with driving and driven shafts not coaxial and an additional shaft
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Structural Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Transmission Devices (AREA)
- Gear Transmission (AREA)
Abstract
The invention discloses a suspension scissor type lifting platform which comprises a mounting seat, wherein two sliding grooves are formed in the bottom wall of the mounting seat, a mounting cavity is formed in the mounting seat, the mounting seat is connected with two threaded rods in a penetrating and rotating mode through bearings, one end of each threaded rod penetrates and extends into the corresponding sliding groove and is provided with threads with opposite rotating directions, the other end of each threaded rod penetrates and extends into the mounting cavity and is in interference fit with a worm wheel, one section of the threaded rod, which is located in the sliding groove, is connected with two sliding blocks, the sliding blocks, which are located on the same side, are connected with a scissor assembly in a rotating mode through a pin shaft, the scissor assembly is connected with a lifting platform in a rotating mode through the pin shaft, and a driving device is arranged in the mounting cavity. Compared with the lifting platform directly driven by the hydraulic cylinder in the prior art, the lifting platform has the advantages of simpler structure, smaller occupied area, more convenient maintenance and repair and can conveniently regulate and control the lifting speed.
Description
Technical Field
The invention relates to the technical field of coating tools, in particular to a hanging scissor type lifting platform.
Background
In modern product process manufacturing, in order to prevent the corrosion of a process product and in order to beautify the process product, the process of the process product is a coating process for the process product, the coating is an important link in the modern product manufacturing process, the rust prevention and corrosion prevention coating quality is one of important aspects of the overall quality of the product, and when some large-scale process products are coated, a lifting platform is often required to transport the process product. In the prior art, the existing lifting platform is usually lifted by a hydraulic cylinder directly driving the platform, the equipment directly using the hydraulic cylinder usually occupies a large area, the maintenance and repair process is complicated, and the lift angular speed of the lifting platform can not be directly regulated and controlled.
Disclosure of Invention
The invention aims to solve the defects in the prior art and provides a suspension scissor type lifting platform.
In order to achieve the purpose, the invention adopts the following technical scheme:
hang and cut fork lift platform, including the mount pad, two sliding tray have been seted up to the mount pad diapire, set up the installation cavity in the mount pad, the mount pad runs through the bearing and rotates and is connected with two threaded rods, threaded rod one end runs through and extends to the sliding tray that corresponds and is provided with to revolve to opposite screw, and the other end runs through and extends to installation cavity and interference fit have the worm wheel, one section threaded connection that the threaded rod is located the sliding tray has two sliders, is located the homonymy the slider rotates through the round pin axle to be connected with and cuts the fork subassembly, it is connected with the elevating platform jointly to cut the fork subassembly through the round pin axle rotation, be provided with drive arrangement in the installation cavity.
Preferably, the driving device comprises a transmission rod rotatably connected with the side wall of the installation cavity through a bearing, the transmission rod is in interference fit with two first bevel gears, the first bevel gears are meshed with a second bevel gear, the second bevel gears are in interference fit with a driven shaft, the top end of the driven shaft is rotatably connected with the inner top wall of the installation cavity through the bearing, the driven shaft is in interference fit with a worm, the worm is meshed with the corresponding worm gear, and a transmission mechanism is arranged in the installation seat.
Preferably, drive mechanism includes two welding electric putter at the mount pad lateral wall, the common welding of electric putter output has driving motor, driving motor's output shaft passes through the bearing with the mount pad and rotates to be connected and extend to in the installation cavity, one section interference fit that driving motor's output shaft is located the installation cavity has third gear, fourth gear, transfer line interference fit has first gear, second gear, third gear and first gear engagement, fourth gear and second gear engagement.
Preferably, the thread lead angle of the threaded rod is smaller than the equivalent friction angle of a screw pair formed by the threaded rod and the sliding block, and the cross sections of the sliding groove and the sliding block are both T-shaped.
Preferably, the unwinding helix angle of the worm is smaller than the contact friction angle of the worm and the worm wheel.
Preferably, the size of the first gear is smaller than that of the third gear, and the size of the second gear is smaller than that of the fourth gear.
The invention has the advantages that: the threaded rod drives the two sliding blocks to move together, and the lifting platform is lifted through the shearing fork assembly, so that the device has the advantages of small floor area, simple structure and simple maintenance process; by arranging the worm wheel and the worm to drive the threaded rod to rotate and realizing self-locking between the worm wheel and the worm, when the lifting platform is used for carrying a load to suspend, the worm wheel cannot drive the worm to rotate, namely the worm cannot be subjected to a rotating torque, so that the driving motor cannot be subjected to the rotating torque when the lifting platform is suspended, and the damage of the driving motor caused by long-time bearing of the rotating torque is avoided; through setting up first gear, second gear, third gear, fourth gear, electric putter, the meshing between the gear can be controlled to control torch push rod to can be direct regulate and control the lifting speed of lift platform, it is more convenient to use.
Drawings
Fig. 1 is a schematic structural diagram of a suspended scissor lift platform according to the present invention;
FIG. 2 is an enlarged view taken at A in FIG. 1;
fig. 3 is a cross-sectional view at C-C of the mounting base of the suspended scissor lift platform of fig. 1.
In the figure: the device comprises a mounting seat 1, a sliding groove 2, a threaded rod 3, a sliding block 4, a scissor assembly 5, a lifting table 6, a mounting cavity 7, a worm wheel 8, a worm 9, a driven shaft 10, a first bevel gear 11, a second bevel gear 12, a transmission rod 13, a first gear 14, a second gear 15, a third gear 16, a fourth gear 17, a driving motor 18 and an electric push rod 19.
Detailed Description
The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.
Referring to fig. 1-3, the hanging scissor type lifting platform comprises a mounting seat 1, two sliding grooves 2 are arranged on the bottom wall of the mounting seat 1, a mounting cavity 7 is arranged in the mounting seat 1, the mounting seat 1 is connected with two threaded rods 3 through bearings in a penetrating and rotating manner, one ends of the threaded rods 3 penetrate and extend into the corresponding sliding grooves 2 and are provided with threads with opposite rotating directions, the lengths of the threads with opposite rotating directions of the threaded rods 3 are consistent and are symmetrical about the centers of the sliding grooves 2, so that the threaded rods 3 can synchronously drive two sliding blocks 4 to oppositely move in a penetrating manner, the other ends of the threaded rods penetrate and extend into the mounting cavity 7 and are in interference fit with worm wheels 8, one section of the threaded rods 3 in the sliding grooves 2 is connected with two sliding blocks 4, the sliding blocks 4 on the same side are rotatably connected with a scissor assembly 5 through pin shafts, and the scissor assembly 5 is formed by mutually intersecting and rotatably connecting a plurality of rod pieces, the scissor assembly 5 is rotatably connected with a lifting platform 6 through a pin shaft, and a driving device is arranged in the mounting cavity 7.
The driving device comprises a transmission rod 13 which is rotatably connected with the side wall of the mounting cavity 7 through a bearing, the transmission rod 13 is in interference fit with two first bevel gears 11, the first bevel gears 11 are meshed with second bevel gears 12, the second bevel gears 12 are in interference fit with a driven shaft 10, the top end of the driven shaft 1 is rotatably connected with the top wall of the mounting cavity 7 through the bearing, the driven shaft 10 is in interference fit with a worm 9, the worm 9 is meshed with a corresponding worm wheel 8, and a transmission mechanism is arranged in the mounting seat 1.
The transmission mechanism comprises two electric push rods 19 welded on the side wall of the mounting seat 1, a driving motor 18 is welded at the output end of each electric push rod 19 together, the output shaft of each driving motor 18 is connected with the mounting seat 1 in a penetrating and rotating mode through a bearing and extends into the mounting cavity 7, one section of the output shaft of each driving motor 18 located in the mounting cavity 7 is in interference fit with a third gear 16 and a fourth gear 17, the transmission rod 13 is in interference fit with a first gear 14 and a second gear 15, the third gear 16 is meshed with the first gear 14, and the fourth gear 17 is meshed with the second gear 15.
The thread lead angle of threaded rod 3 is less than the equivalent friction angle of the screw pair that threaded rod 3 and slider 4 constitute for threaded connection between threaded rod 3 and the slider 4 realizes the auto-lock, avoids threaded connection department to appear rocking, thereby influences the stability of elevating platform, and the cross-section of sliding tray 2 and slider 4 is the T shape, and the slider 4 of T shape prevents to drop from sliding tray 2, avoids threaded rod 3 to receive the gravity of object on the elevating platform 3 simultaneously.
The expansion helical angle of the worm 9 is smaller than the contact friction angle between the worm 9 and the worm wheel 8, so that self-locking is realized between the worm 9 and the worm wheel 8, the worm wheel 8 cannot drive the worm 9 to rotate, the driving motor 18 is prevented from receiving rotating torque, and the motor is protected.
The size of the first gear 14 is smaller than that of the third gear 16, the size of the second gear 15 is smaller than that of the fourth gear 17, the lifting speed of the lifting platform 6 can be controlled by controlling the meshing of gears with different sizes, the driving motor 18 adopts a motor with a model Y100L-2, and the electric push rod 19 adopts an electric push rod with a model DT-100.
When the lifting platform is used, a craft product needing to be lifted is placed on the lifting platform 6, and the electric push rod 19 is controlled to drive the driving motor 18 to move according to the required lifting speed, so that the third gear 16 and the fourth gear 17 are driven to move, when the third gear 16 is meshed with the first gear 14, the lifting speed is slow, and when the fourth gear 17 is meshed with the second gear 15, the lifting speed is slow;
after the lifting speed is adjusted, the driving motor 18 is started, the driving motor 18 drives the third gear 16 and the fourth gear 17 which are in interference fit with the output shaft of the driving motor to rotate, so that the third gear 16 drives the first gear 14 which is meshed with the third gear to rotate or the fourth gear 17 drives the second gear 15 which is meshed with the fourth gear to rotate, so that the second gear 15 or the first gear 14 drives the transmission rod 13 which is in interference fit with the third gear to rotate, the transmission rod 13 rotates to drive the two first bevel gears 11 which are in interference fit with the transmission rod to rotate, so that the second bevel gear 12 which is meshed with the first bevel gear 11 rotates, the second bevel gear 12 drives the driven shaft 10 which is in interference fit with the second bevel gear to rotate, the driven shaft 10 rotates to drive the worm 9 which is in interference fit with the driven shaft, so that the worm wheel 8 which is meshed with the worm 9 rotates to drive the two threaded rods 3 which are in interference fit with the worm wheel 8 to rotate, the threaded rods 3 rotate to drive the two sliding blocks 4 which are in threaded connection with the threaded rods to move in opposite directions, thereby enabling the two sliding blocks 4 to drive the scissor assembly to contract and extend, and enabling the lifting platform 6 to lift.
Claims (6)
1. A hanging scissor type lifting platform comprises a mounting seat (1) and is characterized in that the bottom wall of the mounting seat (1) is provided with two sliding grooves (2), a mounting cavity (7) is arranged in the mounting seat (1), the mounting seat (1) is connected with two threaded rods (3) in a penetrating and rotating way through a bearing, one end of the threaded rod (3) penetrates through the corresponding sliding groove (2) and extends into the corresponding sliding groove and is provided with threads with opposite rotating directions, the other end of the threaded rod penetrates through the mounting cavity (7) and extends into the mounting cavity and is in interference fit with a worm wheel (8), one section of the threaded rod (3) positioned in the sliding groove (2) is in threaded connection with two sliding blocks (4), the sliding blocks (4) positioned on the same side are in rotary connection with a scissor assembly (5) through a pin shaft, the scissor assembly (5) is connected with a lifting platform (6) through a pin shaft in a rotating mode, and a driving device is arranged in the installation cavity (7).
2. A suspended scissor lift platform according to claim 1, wherein the driving device comprises a driving rod (13) rotatably connected with the side wall of the installation cavity (7) through a bearing, the driving rod (13) is in interference fit with two first bevel gears (11), the first bevel gears (11) are engaged with a second bevel gear (12), the second bevel gear (12) is in interference fit with a driven shaft (10), the top end of the driven shaft (1) is rotatably connected with the inner top wall of the installation cavity (7) through a bearing, the driven shaft (10) is in interference fit with a worm (9), the worm (9) is engaged with the corresponding worm gear (8), and a transmission mechanism is arranged in the installation seat (1).
3. A suspended scissor lifting platform according to claim 2, wherein the transmission mechanism comprises two electric push rods (19) welded on the side wall of the mounting seat (1), the output ends of the electric push rods (19) are welded with a driving motor (18), the output shaft of the driving motor (18) is connected with the mounting seat (1) through a bearing in a penetrating and rotating mode and extends into the mounting cavity (7), a section of the output shaft of the driving motor (18) located in the mounting cavity (7) is in interference fit with a third gear (16) and a fourth gear (17), the transmission rod (13) is in interference fit with a first gear (14) and a second gear (15), the third gear (16) is meshed with the first gear (14), and the fourth gear (17) is meshed with the second gear (15).
4. A suspended scissor lift platform according to claim 1, wherein the lead angle of the threaded rod (3) is smaller than the equivalent friction angle of the screw pair formed by the threaded rod (3) and the slider (4), and the cross-sections of the sliding groove (2) and the slider (4) are both T-shaped.
5. A suspended scissor lift platform according to claim 2, wherein a deployment helix angle of the worm (9) is less than a contact friction angle of the worm (9) with the worm gear (8).
6. A suspended scissor lift platform according to claim 3, wherein the first gear (14) is smaller in size than the third gear (16) and the second gear (15) is smaller in size than the fourth gear (17).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110420229.0A CN113135528A (en) | 2021-04-19 | 2021-04-19 | Suspension scissor type lifting platform |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110420229.0A CN113135528A (en) | 2021-04-19 | 2021-04-19 | Suspension scissor type lifting platform |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113135528A true CN113135528A (en) | 2021-07-20 |
Family
ID=76812700
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110420229.0A Pending CN113135528A (en) | 2021-04-19 | 2021-04-19 | Suspension scissor type lifting platform |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113135528A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114115174A (en) * | 2021-10-27 | 2022-03-01 | 北京云汉通航科技有限公司 | Fault processing method, system and device of high-speed police early-warning vehicle |
| CN114206053A (en) * | 2021-11-24 | 2022-03-18 | 李文建 | Intelligent cabinet for logistics transportation computer network server |
| CN114717092A (en) * | 2022-04-26 | 2022-07-08 | 云南牛牛牧业股份有限公司 | Organic waste fermenting installation that ecological milk cow bred |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE591298C (en) * | 1934-01-18 | J M Voith Maschinenfabrik | Gear change transmission | |
| GB534292A (en) * | 1939-10-06 | 1941-03-04 | Thornycroft John I & Co Ltd | Improvements in or relating to auxiliary gearbox driving arrangements particularly for motor vehicles |
| JP2001112550A (en) * | 1999-10-19 | 2001-04-24 | Asmo Co Ltd | Driving device for electrically-driven elevating/ lowering-type cabinet |
| CN201722105U (en) * | 2010-04-08 | 2011-01-26 | 刘耀东 | Manually-driven twin-screw lifting platform |
| CN103787230A (en) * | 2014-02-27 | 2014-05-14 | 张家港市华机环保新能源科技有限公司 | Double-scissor-type lifting platform used for conveying LNG bottles |
| CN209856047U (en) * | 2019-04-02 | 2019-12-27 | 昆山筹胜机械科技有限公司 | Horizontal centrifugal pump |
| CN211117402U (en) * | 2019-10-22 | 2020-07-28 | 常州鼎森传动科技有限公司 | Adjustable multi-gear meshing transmission |
| CN211145249U (en) * | 2019-11-28 | 2020-07-31 | 天津起初时代科技有限公司 | Brake motor gear with speed conversion function |
| CN212153124U (en) * | 2020-03-29 | 2020-12-15 | 房晓荣 | Lifting platform for road and bridge construction |
| CN112610663A (en) * | 2020-12-16 | 2021-04-06 | 贵州新邦羽包装有限公司 | Speed change device for full-automatic color carton production line |
| CN112645237A (en) * | 2020-09-17 | 2021-04-13 | 袁燕静 | Pipe conveying device for municipal water supply and drainage |
-
2021
- 2021-04-19 CN CN202110420229.0A patent/CN113135528A/en active Pending
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE591298C (en) * | 1934-01-18 | J M Voith Maschinenfabrik | Gear change transmission | |
| GB534292A (en) * | 1939-10-06 | 1941-03-04 | Thornycroft John I & Co Ltd | Improvements in or relating to auxiliary gearbox driving arrangements particularly for motor vehicles |
| JP2001112550A (en) * | 1999-10-19 | 2001-04-24 | Asmo Co Ltd | Driving device for electrically-driven elevating/ lowering-type cabinet |
| CN201722105U (en) * | 2010-04-08 | 2011-01-26 | 刘耀东 | Manually-driven twin-screw lifting platform |
| CN103787230A (en) * | 2014-02-27 | 2014-05-14 | 张家港市华机环保新能源科技有限公司 | Double-scissor-type lifting platform used for conveying LNG bottles |
| CN209856047U (en) * | 2019-04-02 | 2019-12-27 | 昆山筹胜机械科技有限公司 | Horizontal centrifugal pump |
| CN211117402U (en) * | 2019-10-22 | 2020-07-28 | 常州鼎森传动科技有限公司 | Adjustable multi-gear meshing transmission |
| CN211145249U (en) * | 2019-11-28 | 2020-07-31 | 天津起初时代科技有限公司 | Brake motor gear with speed conversion function |
| CN212153124U (en) * | 2020-03-29 | 2020-12-15 | 房晓荣 | Lifting platform for road and bridge construction |
| CN112645237A (en) * | 2020-09-17 | 2021-04-13 | 袁燕静 | Pipe conveying device for municipal water supply and drainage |
| CN112610663A (en) * | 2020-12-16 | 2021-04-06 | 贵州新邦羽包装有限公司 | Speed change device for full-automatic color carton production line |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114115174A (en) * | 2021-10-27 | 2022-03-01 | 北京云汉通航科技有限公司 | Fault processing method, system and device of high-speed police early-warning vehicle |
| CN114115174B (en) * | 2021-10-27 | 2022-06-24 | 北京云汉通航科技有限公司 | Fault processing method, system and device of high-speed police early-warning vehicle |
| CN114206053A (en) * | 2021-11-24 | 2022-03-18 | 李文建 | Intelligent cabinet for logistics transportation computer network server |
| CN114717092A (en) * | 2022-04-26 | 2022-07-08 | 云南牛牛牧业股份有限公司 | Organic waste fermenting installation that ecological milk cow bred |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
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| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20210720 |