CN114031012A - High-stability two-stage power type automobile elevator - Google Patents
High-stability two-stage power type automobile elevator Download PDFInfo
- Publication number
- CN114031012A CN114031012A CN202111302900.8A CN202111302900A CN114031012A CN 114031012 A CN114031012 A CN 114031012A CN 202111302900 A CN202111302900 A CN 202111302900A CN 114031012 A CN114031012 A CN 114031012A
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- Prior art keywords
- door
- guide shafts
- distributed
- plate
- shaped frames
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- 238000012423 maintenance Methods 0.000 description 8
- 230000001360 synchronised effect Effects 0.000 description 2
- 230000004888 barrier function Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
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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
- 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
- B66F7/08—Lifting frames, e.g. for lifting vehicles; Platform lifts with platforms supported by levers for vertical movement hydraulically or pneumatically operated
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60S—SERVICING, CLEANING, REPAIRING, SUPPORTING, LIFTING, OR MANOEUVRING OF VEHICLES, NOT OTHERWISE PROVIDED FOR
- B60S5/00—Servicing, maintaining, repairing, or refitting of vehicles
-
- 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
- B66F7/0633—Mechanical arrangements not covered by the following subgroups
-
- 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
Abstract
The invention discloses a high-stability two-stage power type automobile elevator which comprises a bottom bracket, an upper platform and an oil cylinder, wherein two guide shafts are arranged on the bottom bracket in parallel, the two guide shafts are horizontally distributed and are arranged on the same horizontal plane, a middle seat plate, a left connecting beam and a right connecting beam which are arranged in parallel are connected between the two guide shafts, and the middle seat plate is fixedly connected with the middle parts of the guide shafts. According to the automobile chassis, the two first door-shaped frames are rotatably connected to the bottom bracket, the first door-shaped frames are rotatably connected with the upper platform through the second door-shaped frames, when the upper platform moves upwards, the first door-shaped frames and the second door-shaped frames are unfolded, the upper platform and the bottom bracket are in an open state, so that people can stand conveniently, the bottom of the automobile chassis is completely exposed, the chassis is convenient to maintain and repair, when the upper platform moves downwards, the first door-shaped frames and the second door-shaped frames are folded, the occupied space is avoided, and the automobile and the upper platform can be conveniently butted.
Description
Technical Field
The invention relates to the technical field of elevators for automobile maintenance, in particular to a two-stage power type automobile elevator with high stability.
Background
With the gradual popularization of automobiles, people gradually master the skills of maintenance and repair of the automobiles, namely people gradually maintain and repair household automobiles, the maintenance and repair operation of the automobile meter body is convenient at present, but the maintenance and repair of the chassis are difficult to operate, and due to the small space of the chassis, maintenance personnel can only lie in contact for maintenance and repair, so that the labor intensity is high, and the operation and the control are inconvenient; at present, a mode of maintaining an automobile chassis is a mode of adopting a ramp, a vehicle is driven on a table top, and an operator performs maintenance operation in the middle of the ramp, but the arrangement is limited to a professional maintenance area and is not suitable for household use.
Therefore, the invention provides a two-stage power type automobile elevator with high stability.
Disclosure of Invention
The invention aims to: in order to solve the problems mentioned in the background technology, a two-stage power type automobile elevator with high stability is provided.
In order to achieve the purpose, the invention adopts the following technical scheme:
a high-stability two-stage power type automobile elevator comprises a bottom bracket, an upper platform and an oil cylinder, wherein two guide shafts which are distributed in parallel are arranged on the bottom bracket, the two guide shafts are distributed horizontally and are arranged on the same horizontal plane, a middle seat plate, a left connecting beam and a right connecting beam which are distributed in parallel are connected between the two guide shafts, the middle parts of the middle seat plate and the guide shafts are fixedly connected, the left connecting beam and the right connecting beam are positioned on two sides of the middle seat plate and are in axial sliding fit with the guide shafts, two ends of the left connecting beam and the right connecting beam are both rotatably connected with connecting arms, the rotating axes of the connecting arms are distributed horizontally and are vertical to the axes of the guide shafts, two guide shafts are respectively rotatably connected with first door-shaped frames, the open ends of the first door-shaped frames are distributed towards the guide shafts and the first beams and the guide shafts in the middle of the guide shafts in parallel, the non-open ends of the first door-shaped frames are rotatably connected with second door-shaped frames, the open end of second door type frame is towards the non-open end of first door type frame and second crossbeam and first crossbeam parallel distribution on it, the fixed supporting beam that is provided with two parallel distribution and for horizontal distribution in bottom of upper mounting plate, supporting beam and second crossbeam parallel distribution just are normal running fit, the fixed spacing seat that is provided with in middle part in the outside of supporting beam, set up the rectangle connecting plate on the spacing seat, the fixed last location axle that is provided with two parallels for horizontal distribution in one side of rectangle connecting plate, two go up the location axle on same horizontal plane and with be located the bottom bracket with one side the one end of linking arm is rotated and is connected, the hydro-cylinder is the fixed both sides that set up bedplate in the symmetric distribution and its output is connected with the opposite side of left tie-beam and right tie-beam respectively.
As a further description of the above technical solution:
the equal fixedly connected with cover in both ends of left connecting beam and right connecting beam is established outside and is sliding fit's uide bushing at the guiding axle, the external fixation of uide bushing is provided with down the location axle, the connecting hole with last location axle and lower location axle normal running fit is seted up at the both ends of linking arm.
As a further description of the above technical solution:
the limiting seat is of a vertical rectangular plate structure, and a bearing seat is fixedly arranged at the bottom of the limiting seat.
As a further description of the above technical solution:
still include connecting rod and telescopic link, fixed set up the cover on the connecting rod and establish the adapter sleeve on first crossbeam, this adapter sleeve and first crossbeam normal running fit, the one end and the second crossbeam fixed connection of connecting rod, sliding fit about rectangular connecting plate and spacing seat are, the other end rotation connection of telescopic link and connecting rod is passed through to rectangular connecting plate bottom.
As a further description of the above technical solution:
the limiting seat is provided with a slide rail in a penetrating mode, the upper end and the lower end of the slide rail are communicated with the outside, the slide groove is formed in the opposite side wall in the slide rail, a slide block in sliding fit with the slide rail is fixedly arranged on one side of the rectangular connecting plate, and limiting blocks in sliding fit with the slide groove are fixedly arranged on the two sides of the slide block.
As a further description of the above technical solution:
the bottom of the rectangular connecting plate is fixedly provided with a traction plate hinged with one end of the upper moving rod of the telescopic rod, the fixed end of the upper moving sleeve of the telescopic rod is fixedly provided with a right-angle seat hinged with the other end of the connecting rod, and the moving sleeve and the connecting sleeve are matched for use.
In summary, due to the adoption of the technical scheme, the invention has the beneficial effects that:
1. according to the automobile chassis, the two first door-shaped frames are rotatably connected to the bottom bracket, the first door-shaped frames are rotatably connected with the upper platform through the second door-shaped frames, when the upper platform moves upwards, the first door-shaped frames and the second door-shaped frames are unfolded, the upper platform and the bottom bracket are in an open state, so that people can stand conveniently, the bottom of the automobile chassis is completely exposed, the chassis is convenient to maintain and repair, when the upper platform moves downwards, the first door-shaped frames and the second door-shaped frames are folded, the occupied space is avoided, and the automobile and the upper platform can be conveniently butted.
2. According to the invention, the bottom bracket is provided with the left connecting beam and the right connecting beam which are horizontally distributed and can move in the same direction or opposite directions, two ends of the left connecting beam and the right connecting beam are respectively connected with the connecting arm, the bottom of the upper platform is provided with the supporting beam, the supporting beam is provided with the limiting seat, the limiting seat is provided with the rectangular connecting block, the rectangular connecting block is rotatably connected with the close end of the connecting arm positioned on the same side, the connecting arms are vertically distributed, and the connecting arms can drive the upper platform to move up and down to realize power input by rotating, so that the structure is simple, and the cost is low.
3. According to the invention, the oil cylinder lifting device further comprises a connecting rod and a telescopic rod, a connecting sleeve is fixedly arranged on the connecting rod and sleeved on the first cross beam, the connecting sleeve is in rotating fit with the first cross beam, one end of the connecting rod is fixedly connected with the second cross beam, the rectangular connecting plate and the limiting seat are in vertical sliding fit, the bottom of the rectangular connecting plate is in rotating connection with the other end of the connecting rod through the telescopic rod, the upper platform is enabled to obtain power for two-stage lifting, when the included angle between two connecting arms on the same side is the maximum stage, the upper platform is located at the bottommost position, at the moment, the lifting of the upper platform indirectly lifts the upper platform through prying the connecting rod through the telescopic rod to rotate, the load of the oil cylinder can be greatly reduced, and the oil cylinder lifting device has the energy-saving effect.
Drawings
Fig. 1 is a schematic structural view of a two-stage power type automobile elevator with high stability, which is provided by the invention, after a bottom bracket and an upper platform are integrally assembled;
FIG. 2 is a schematic structural view of the two-stage powered vehicle lift of high stability shown in FIG. 1;
FIG. 3 is a schematic bottom view of the two-stage powered vehicle lift of the present invention shown in FIG. 1;
FIG. 4 is a schematic structural diagram of the connection of the connecting arm, the rectangular connecting plate and the limiting seat of the two-stage power type automobile elevator with high stability provided by the invention;
fig. 5 is a schematic structural view of the two-stage power type car elevator with high stability, which is provided by the invention, and the telescopic rod and the connecting rod are additionally arranged in fig. 4 in a back-up view.
Illustration of the drawings:
1. a bottom bracket; 11. a guide shaft; 111. a middle seat plate; 112. a left connecting beam; 113. a right connecting beam; 2. an upper platform; 21. a support beam; 211. a limiting seat; 2111. a rectangular connecting plate; 21111. an upper positioning shaft; 21112. a slider; 211121, a limiting block; 21113. a traction plate; 2112. a bearing seat; 2113. a slideway; 21131. a chute; 3. an oil cylinder; 4. a connecting arm; 41. connecting holes; 5. a first gantry; 51. a first cross member; 6. a second portal frame; 61. a second cross member; 7. a guide sleeve; 71. a lower positioning shaft; 8. a connecting rod; 81. connecting sleeves; 9. a telescopic rod; 91. a right-angle seat.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
Referring to fig. 1-3, a two-stage power type car elevator with high stability comprises a bottom bracket 1, an upper platform 2 and an oil cylinder 3, wherein two guide shafts 11 are arranged on the bottom bracket 1, the two guide shafts 11 are arranged horizontally and on the same horizontal plane, a middle seat plate 111, a left connecting beam 112 and a right connecting beam 113 are arranged between the two guide shafts 11 and are arranged in parallel, the middle parts of the middle seat plate 111 and the guide shafts 11 are fixedly connected, the left connecting beam 112 and the right connecting beam 113 are arranged on two sides of the middle seat plate 111 and are in axial sliding fit with the guide shafts 11, two ends of the left connecting beam 112 and the right connecting beam 113 are rotatably connected with connecting arms 4, the rotation axis of the connecting arms 4 is arranged horizontally and is perpendicular to the axis of the guide shafts 11, specifically, two ends of the left connecting beam 112 and the right connecting beam 113 are fixedly connected with guide sleeves 7 which are sleeved outside the guide shafts 11 and are in sliding fit, a lower positioning shaft 71 is fixedly arranged outside the guide sleeve 7, one end of the connecting arm 4 is provided with a connecting hole 41 which is in running fit with the lower positioning shaft 71, the two guide shafts 11 are respectively and rotatably connected with a first door-shaped frame 5, the open end of the first door-shaped frame 5 faces the guide shafts 11, a first cross beam 51 and the guide shafts 11 in the middle of the first door-shaped frame 5 are distributed in parallel, the non-open end of the first door-shaped frame 5 is rotatably connected with a second door-shaped frame 6, the open end of the second door-shaped frame 6 faces the non-open end of the first door-shaped frame 5, a second cross beam 61 and the first cross beam 51 on the first door-shaped frame are distributed in parallel, the bottom of the upper platform 2 is fixedly provided with two supporting beams 21 which are distributed in parallel and distributed in horizontal, the supporting beams 21 and the second cross beam 61 are distributed in parallel and in running fit, a limiting seat 211 is fixedly arranged in the middle part of the outer side of the supporting beams 21, a rectangular connecting plate 2111 is arranged on the rectangular connecting plate 2111, one side of the rectangular connecting plate 21111 is fixedly provided with two upper positioning shafts 21111 which are distributed in parallel and distributed in horizontal distribution, the two upper positioning shafts 21111 are on the same horizontal plane and are rotatably connected with one end of the connecting arm 4 positioned on the same side of the bottom bracket 1, so that the opposite movement of the two guide sleeves 7 on the same side can drive the included angle between the two corresponding connecting arms 4 to be reduced and can drive the rectangular connecting plate 2111 to be lifted, and further the height of the upper platform 2 can be lifted, the other end of each connecting arm 4 is also provided with a connecting hole 41 which is rotatably matched with the upper positioning shaft 21111, the oil cylinders 3 are symmetrically distributed and fixedly arranged on two sides of the middle base plate 111, and the output ends of the oil cylinders are respectively connected with the opposite sides of the left connecting beam 112 and the right connecting beam 113, so that the power input structure of the device is positioned at the bottom, the lifting mechanisms are positioned on two sides, no barrier is arranged between the upper platform 2 and the bottom bracket 1, so that personnel can stand conveniently, and the overall structure is reduced and the occupied area is small after the upper platform 2 is reset; the limiting seat 211 is a vertical rectangular plate structure and the bottom thereof is fixedly provided with a bearing seat 2112, when the upper platform 2 is located at the bottommost position, the bearing seat 2112 can contact with the ground, and the load of each rotating joint is reduced.
Example 2
Referring to fig. 4 and 5, the difference from embodiment 1 is that the device further includes a connecting rod 8 and an expansion rod 9, a connecting sleeve 81 is fixedly disposed on the connecting rod 8 and sleeved on the first beam 51, the connecting sleeve 81 is rotatably engaged with the first beam 51, one end of the connecting rod 8 is fixedly connected with the second beam 61, the rectangular connecting plate 2111 and the limiting seat 211 are in up-and-down sliding engagement, the bottom of the rectangular connecting plate 2111 is rotatably connected with the other end of the connecting rod 8 through the expansion rod 9, specifically, a sliding way 2113 is penetratingly disposed on the limiting seat 211, the upper end and the lower end of the sliding way 2113 are communicated with the outside, a sliding groove 21131 is disposed on the opposite side wall in the sliding way 2113, a sliding block 21112 slidably engaged with the sliding groove 2113 is fixedly disposed on one side of the rectangular connecting plate 2111, limiting blocks 211121 slidably engaged with the sliding groove 21131 are fixedly disposed on both sides of the sliding block 21112, further described that a pulling plate 21113 hinged with one end of an upper moving rod of the expansion rod 9 is fixedly disposed on the bottom of the rectangular connecting plate 2111, the fixed end of moving the cover on telescopic link 9 is fixed be provided with the articulated right angle seat 91 of 8 other ends of connecting rod, move cover and adapter sleeve 81 cooperation and use, thereby it can support to press in the lower part of adapter sleeve 81 and can drive connecting rod 8 and rotate to move its outside when the cover promotes, connecting rod 8 rotates and can drive second door type frame 6 and rotate, thereby promote upper mounting plate 2, promote to a take the altitude when upper mounting plate 2, and when rectangle connecting plate 2111 upwards slided to extreme position, the power that promotes upper mounting plate 2 can be born to linking arm 4 this moment, the efficiency that has two-stage power and promote.
The working principle is as follows: when the lifting device is used, the bottom bracket 1 is placed on the ground, the synchronous pushing movement of the oil cylinders 3 on two sides of the middle seat plate 111 is controlled, the distance between the left connecting beam 112 and the right connecting beam 113 is the largest, the included angle between the adjacent connecting arms 4 is in the largest state, the height of the upper platform 2 is reduced at the moment, the automobile is driven to be above the upper platform 2, the synchronous return stroke of the two oil cylinders 3 is controlled, the return stroke of the oil cylinders 3 drives the left connecting beam 112 and the right connecting beam 113 to synchronously move in opposite directions, the adjacent connecting arms 4 are driven to reversely rotate through the left and right guide sleeves 7, the included angle between the two connecting arms is reduced, the rectangular connecting plate 2111 is driven to move upwards, then the limiting seat 211 is driven to move upwards, the whole upper platform 2 is lifted, the lower space of the upper platform 2 is empty after the upper platform 2 is lifted, a person can conveniently stand to maintain the automobile chassis, otherwise, the whole volume is small, does not occupy space and is suitable for household use.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (6)
1. The two-stage power type automobile elevator with high stability comprises a bottom bracket (1), an upper platform (2) and an oil cylinder (3), and is characterized in that two guide shafts (11) which are distributed in parallel are arranged on the bottom bracket (1), the two guide shafts (11) are distributed horizontally and are on the same horizontal plane, a middle seat plate (111), a left connecting beam (112) and a right connecting beam (113) which are distributed in parallel are connected between the two guide shafts (11), the middle parts of the middle seat plate (111) and the guide shafts (11) are fixedly connected, the left connecting beam (112) and the right connecting beam (113) are positioned at two sides of the middle seat plate (111) and are in axial sliding fit with the guide shafts (11), connecting arms (4) are rotatably connected at two ends of the left connecting beam (112) and the right connecting beam (113), the rotating axes of the connecting arms (4) are distributed horizontally and are perpendicular to the axes of the guide shafts (11), the two guide shafts (11) are respectively and rotatably connected with a first door-shaped frame (5), the open ends of the first door-shaped frames (5) face the guide shafts (11), the first beam (51) and the guide shafts (11) in the middle of the guide shafts are distributed in parallel, the non-open ends of the first door-shaped frames (5) are rotatably connected with a second door-shaped frame (6), the open ends of the second door-shaped frames (6) face the non-open ends of the first door-shaped frames (5), the second beam (61) and the first beam (51) are distributed in parallel, the bottom of the upper platform (2) is fixedly provided with two supporting beams (21) which are distributed in parallel and are distributed horizontally, the supporting beams (21) and the second beam (61) are distributed in parallel and are in rotating fit, the middle part of the outer sides of the supporting beams (21) is fixedly provided with a limiting seat (211), and the limiting seat (211) is provided with a rectangular connecting plate (2111), two upper positioning shafts (21111) which are parallel and horizontally distributed are fixedly arranged on one side of the rectangular connecting plate (2111), the two upper positioning shafts (21111) are arranged on the same horizontal plane and are rotatably connected with one end, located on the same side of the bottom bracket (1), of the connecting arm (4), the oil cylinders (3) are symmetrically distributed and fixedly arranged on two sides of the middle seat plate (111), and output ends of the oil cylinders are respectively connected with opposite sides of the left connecting beam (112) and the right connecting beam (113).
2. The two-stage power type automobile elevator with high stability as claimed in claim 1, wherein both ends of the left connecting beam (112) and the right connecting beam (113) are fixedly connected with guide sleeves (7) which are sleeved outside the guide shafts (11) and are in sliding fit, lower positioning shafts (71) are fixedly arranged outside the guide sleeves (7), and both ends of the connecting arm (4) are provided with connecting holes (41) which are in running fit with the upper positioning shafts (21111) and the lower positioning shafts (71).
3. The two-stage power type automobile elevator with high stability as claimed in claim 1, wherein the limiting seat (211) is of a vertical rectangular plate structure and a bearing seat (2112) is fixedly arranged at the bottom of the limiting seat.
4. The two-stage power type automobile elevator with high stability as claimed in claim 1, further comprising a connecting rod (8) and an expansion link (9), wherein a connecting sleeve (81) sleeved on the first cross beam (51) is fixedly arranged on the connecting rod (8), the connecting sleeve (81) is in running fit with the first cross beam (51), one end of the connecting rod (8) is fixedly connected with the second cross beam (61), the rectangular connecting plate (2111) and the limiting seat (211) are in up-and-down sliding fit, and the bottom of the rectangular connecting plate (2111) is in running connection with the other end of the connecting rod (8) through the expansion link (9).
5. The two-stage power type automobile elevator with high stability according to claim 4, wherein a slideway (2113) penetrates through the limiting seat (211), the upper end and the lower end of the slideway (2113) are communicated with the outside, a sliding groove (21131) is formed in the opposite side wall in the slideway (2113), a sliding block (21112) in sliding fit with the slideway (2113) is fixedly arranged on one side of the rectangular connecting plate (2111), and limiting blocks (211121) in sliding fit with the sliding groove (21131) are fixedly arranged on two sides of the sliding block (21112).
6. A two-stage power type automobile elevator with high stability as claimed in claim 5, characterized in that a traction plate (21113) hinged to one end of an upper moving rod of the telescopic rod (9) is fixedly arranged at the bottom of the rectangular connecting plate (2111), a right-angle seat (91) hinged to the other end of the connecting rod (8) is fixedly arranged at the fixed end of a moving sleeve on the telescopic rod (9), and the moving sleeve is matched with the connecting sleeve (81) for use.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111302900.8A CN114031012A (en) | 2021-11-05 | 2021-11-05 | High-stability two-stage power type automobile elevator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111302900.8A CN114031012A (en) | 2021-11-05 | 2021-11-05 | High-stability two-stage power type automobile elevator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114031012A true CN114031012A (en) | 2022-02-11 |
Family
ID=80142998
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111302900.8A Withdrawn CN114031012A (en) | 2021-11-05 | 2021-11-05 | High-stability two-stage power type automobile elevator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114031012A (en) |
-
2021
- 2021-11-05 CN CN202111302900.8A patent/CN114031012A/en not_active Withdrawn
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
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| WW01 | Invention patent application withdrawn after publication | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20220211 |