CN220484745U - Environment-friendly skip material stacking and leveling device - Google Patents
Environment-friendly skip material stacking and leveling device Download PDFInfo
- Publication number
- CN220484745U CN220484745U CN202321853580.XU CN202321853580U CN220484745U CN 220484745 U CN220484745 U CN 220484745U CN 202321853580 U CN202321853580 U CN 202321853580U CN 220484745 U CN220484745 U CN 220484745U
- Authority
- CN
- China
- Prior art keywords
- longitudinal
- transverse
- sliding rail
- friendly
- sliding block
- 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.)
- Active
Links
- 239000000463 material Substances 0.000 title claims abstract description 38
- 230000007547 defect Effects 0.000 abstract description 2
- 238000005457 optimization Methods 0.000 description 7
- 238000000034 method Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Landscapes
- Transmission Devices (AREA)
Abstract
The utility model provides an environment-friendly skip material piling and leveling device, which comprises a top frame; the longitudinal sliding rail assembly is arranged on the upper side of the top frame and is connected with the top frame; the longitudinal sliding block assembly is arranged on the upper side of the longitudinal sliding rail assembly and is nested with the longitudinal sliding rail assembly; the transverse sliding rail assembly is connected with the longitudinal sliding block assembly; the transverse sliding block assembly is arranged on the upper side of the transverse sliding rail assembly and is nested; and the push plate is connected with the transverse sliding block assembly. The utility model relates to the technical field of material pile flattening, in particular to an environment-friendly skip material pile flattening device. Aiming at the defects of the prior art, the utility model develops the environment-friendly skip material piling and leveling device, which can save manpower, improve the leveling efficiency and prevent the materials from being scattered accidentally from the edges of the environment-friendly skip.
Description
Technical Field
The utility model relates to the technical field of material pile flattening, in particular to an environment-friendly skip material pile flattening device.
Background
The automatic batching system is widely applied in the fields of metallurgy, building materials, chemical industry, food and the like, and the batching production system is a process for mixing various raw materials together according to a certain proportion and processing and producing certain products. An environment-friendly skip is needed for the automatic batching system. The carriage of environment-friendly skip has electronic or hydraulic pressure to cover canopy device, and when the carriage was loaded, the material in the middle of the carriage was higher than the carriage, only can cover after needs people level above it.
The manual leveling mode is adopted, labor intensity is high, and materials are leveled above the carriage, so that the vehicle belongs to high-altitude operation, and the danger coefficient is relatively high.
Therefore, in order to solve the above problems, an environment-friendly skip material stacking and leveling device is provided to solve the above problems.
Disclosure of Invention
Aiming at the defects of the prior art, the utility model develops the environment-friendly skip material piling and leveling device, which can save manpower, improve the leveling efficiency and prevent the materials from being scattered accidentally from the edges of the environment-friendly skip.
The technical scheme for solving the technical problems is as follows: the utility model provides an environment-friendly skip material piling and leveling device, which comprises a top frame; the longitudinal sliding rail assembly is arranged on the upper side of the top frame and is connected with the top frame; the longitudinal sliding block assembly is arranged on the upper side of the longitudinal sliding rail assembly and is nested with the longitudinal sliding rail assembly; the transverse sliding rail assembly is connected with the longitudinal sliding block assembly; the transverse sliding block assembly is arranged on the upper side of the transverse sliding rail assembly and is nested; and the push plate is connected with the transverse sliding block assembly. The vertical sliding rail assembly, the vertical sliding block assembly, the horizontal sliding block assembly and the horizontal sliding rail assembly are arranged, so that the pushing plate moves in the plane of the top plate of the environment-friendly skip, and the material leveling is realized.
As optimization, the longitudinal sliding rail assembly comprises two longitudinal sliding rails and at least one longitudinal rack, the longitudinal sliding block assembly comprises two longitudinal sliding blocks and at least one longitudinal gear, the longitudinal sliding rails and the longitudinal racks are respectively connected with the top frame, the longitudinal sliding rails corresponding to the longitudinal sliding block nesting are meshed with the longitudinal gears, the longitudinal gears are meshed with the corresponding longitudinal racks, the longitudinal gears are connected with the output shafts of the longitudinal motors, and the longitudinal motors are connected with the corresponding longitudinal sliding blocks. The longitudinal motor is adopted to drive, and the gear and the rack are adopted to be meshed, so that the movement of the longitudinal sliding block assembly is conveniently realized.
As the optimization, horizontal slide rail subassembly includes the backup pad, the backup pad sets up two between the vertical slider, connect two vertical slider, horizontal slide rail and horizontal rack are connected to the backup pad upside, horizontal slide rail subassembly includes horizontal slider, horizontal slider nestification horizontal slide rail, horizontal motor is connected to horizontal slider upside, horizontal motor's output shaft transverse gear, transverse gear meshing horizontal rack. The transverse motor is adopted to drive, and the gear and the rack are adopted to be meshed, so that the movement of the transverse sliding block assembly is conveniently realized.
As optimization, the push plate is connected with the transverse sliding block.
As optimization, the transverse racks and the supporting plate form straight grooves, and the pushing plate is matched with the straight grooves. Through setting up the straight flute, conveniently realize being located the push pedal motion of horizontal rack one side.
As optimization, limiting plate subassembly is connected to the backup pad, limiting plate subassembly includes two curb plates, the downside both ends of backup pad are connected respectively and are corresponded the curb plate, limiting plate electric putter is connected respectively at the both ends of curb plate, limiting plate electric putter's push rod end is connected the limiting plate. The electric push rod of the limiting plate is operated, so that the limiting plate is tightly attached to a carriage, and the edge material of the carriage is prevented from being pushed to the ground when the pushing plate is flat.
As optimization, the top frame is rotationally connected with two groups of rockers, each rocker is rotationally connected with the first base, and at least one rocker is connected with the push-pull block. The parallelogram mechanism formed by the rockers is adopted, so that the top frame can conveniently swing and keep a horizontal state.
As optimization, the push-pull block is rotationally connected with the push rod end of the electric push rod, and the electric push rod is rotationally connected with the second base. Through setting up electric putter, adopt the parallelogram mechanism that the rocker constitutes, realize the push pedal swing to suitable position, realize carrying out the flat material to highly different flat material environmental protection skip.
The effects provided in the summary of the utility model are merely effects of embodiments, not all effects of the utility model, and the above technical solution has the following advantages or beneficial effects:
(1) The device realizes that the pushing plate swings to a proper position by arranging the electric push rod and adopting the parallelogram mechanism formed by the rocking bars, and realizes the material leveling of the material leveling environment-friendly skip with different heights.
(2) The device realizes that the push plate moves in the plane of the top plate of the environment-friendly skip car by arranging the longitudinal slide rail assembly, the longitudinal slide block assembly, the transverse slide block assembly and the transverse slide rail assembly, and realizes material leveling.
(3) The device is provided with the limiting plate, the electric push rod of the limiting plate is operated, the limiting plate is tightly attached to the carriage, and the carriage edge material is prevented from being pushed down to the ground when the pushing plate is flat.
Drawings
The accompanying drawings are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate the utility model and together with the embodiments of the utility model, serve to explain the utility model.
Fig. 1 is a schematic perspective view of the present utility model.
Fig. 2 is a schematic partial perspective view of the present utility model.
Fig. 3 is a schematic partial perspective view of the second embodiment of the present utility model.
Fig. 4 is a schematic diagram of a partial perspective view of the present utility model.
FIG. 5 is a schematic view of the environment-friendly transportation vehicle of the present utility model after entering the forming area of the device.
FIG. 6 is a schematic diagram of the material piling and leveling process of the environment-friendly transport vehicle.
In the figure, 1, a longitudinal sliding rail assembly, 2, a longitudinal sliding rail assembly, 3, a transverse sliding rail assembly, 4, a transverse sliding rail assembly, 5, a push plate, 6, a top frame, 7, a rocker, 8, a first base, 9, a push-pull block, 10, an electric push rod, 11, a second base, 12, a limiting plate assembly, 21, a longitudinal sliding block, 22, a longitudinal motor, 23, a longitudinal gear, 31, a transverse gear, 32, a transverse motor, 33, a transverse sliding block, 41, a supporting plate, 42, a transverse rack, 43, a transverse sliding rail, 44, a straight slot, 101, a longitudinal sliding rail, 102, a longitudinal rack, 121, a side plate, 122, a limiting plate electric push rod, 123 and a limiting plate.
Detailed Description
In order to clearly illustrate the technical features of the present solution, the present utility model will be described in detail below with reference to the following detailed description and the accompanying drawings. The following disclosure provides many different embodiments, or examples, for implementing different structures of the utility model. In order to simplify the present disclosure, components and arrangements of specific examples are described below. Furthermore, the present utility model may repeat reference numerals and/or letters in the various examples. This repetition is for the purpose of simplicity and clarity and does not in itself dictate a relationship between the various embodiments and/or configurations discussed. It should be noted that the components illustrated in the figures are not necessarily drawn to scale. Descriptions of well-known components and processing techniques and processes are omitted so as to not unnecessarily obscure the present utility model. The terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," "outer," and the like refer to an orientation or positional relationship based on that shown in the drawings, merely for convenience of description and to simplify the description, and do not denote or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus are not to be construed as limiting the utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.
As shown in fig. 1 to 6, embodiment one: an environment-friendly skip material piling and leveling device comprises a top frame 6; the longitudinal sliding rail assembly 1 is arranged on the upper side of the top frame 6 and is connected with the top frame 6; the longitudinal sliding block assembly 2 is arranged on the upper side of the longitudinal sliding rail assembly 1 and is nested with the longitudinal sliding rail assembly 1; a transverse sliding rail assembly 4 connected with the longitudinal sliding block assembly 2; the transverse sliding block assembly 3 is arranged on the upper side of the transverse sliding rail assembly 4 and is nested with the transverse sliding rail assembly 4; and the pushing plate 5 is connected with the transverse sliding block assembly 3. The vertical sliding rail assembly 1, the vertical sliding block assembly 2, the horizontal sliding block assembly 4 and the horizontal sliding rail assembly 3 are arranged, so that the pushing plate 5 moves in the plane of the top plate of the environment-friendly skip car, and the material leveling is realized.
The longitudinal sliding rail assembly 1 comprises two longitudinal sliding rails 101 and at least one longitudinal rack 102, the longitudinal sliding block assembly 2 comprises two longitudinal sliding blocks 21 and at least one longitudinal gear 23, the longitudinal sliding rails 101 and the longitudinal racks 102 are respectively connected with the top frame 6, the longitudinal sliding blocks 21 are nested and correspond to the longitudinal sliding rails 101, the longitudinal gears 23 are meshed with the corresponding longitudinal racks 102, the longitudinal gears 23 are connected with output shafts of the longitudinal motors 22, and the longitudinal motors 22 are connected with the corresponding longitudinal sliding blocks 21. By adopting the longitudinal motor 22 to drive and adopting the gear-rack meshing, the movement of the longitudinal sliding block assembly 2 is conveniently realized.
The transverse sliding rail assembly 4 comprises a supporting plate 41, the supporting plate 41 is arranged between two longitudinal sliding blocks 21 and is connected with two longitudinal sliding blocks 21, the upper side of the supporting plate 41 is connected with a transverse sliding rail 43 and a transverse rack 42, the transverse sliding rail assembly 3 comprises a transverse sliding block 33, the transverse sliding rail 43 is nested by the transverse sliding block 33, the upper side of the transverse sliding block 33 is connected with a transverse motor 32, an output shaft of the transverse motor 32 is connected with a transverse gear 31, and the transverse gear 31 is meshed with the transverse rack 42. By adopting the transverse motor 32 to drive and adopting the gear-rack meshing, the movement of the transverse sliding block assembly 3 is conveniently realized.
The longitudinal motor 22 and the transverse motor 32 each employ a servo motor PLF120.
The push plate 5 is connected with the transverse slide 33.
The transverse rack 42 and the support plate 41 form a straight groove 44, and the push plate 5 is matched with the straight groove 44. By providing the straight groove 44, the movement of the push plate 5 positioned at one side of the transverse rack 42 is conveniently realized.
The top frame 6 is rotatably connected with two groups of rocking bars 7, each rocking bar 7 is rotatably connected with a first base 8, and at least one rocking bar 7 is connected with a push-pull block 9. The parallelogram mechanism formed by the rocking bars 7 is adopted, so that the swinging of the top frame 6 can be conveniently realized and the horizontal state can be maintained.
The push-pull block 9 is rotatably connected with a push rod end of the electric push rod 10, and the electric push rod 10 is rotatably connected with the second base 11. Through setting up electric putter 10, adopt the parallelogram mechanism that rocker 7 constitutes, realize push pedal 5 swing to suitable position, realize carrying out the flat material to the flat material environmental protection skip of high difference.
The electric push rod 10 adopts a JXTL high-thrust electric push rod.
The first base 8 and the second base 11 are mounted to the ground.
The workflow of this embodiment is:
the environment-friendly skip car runs to a proper position of the device composition area. The electric push rod 10 is controlled to extend, the electric push rod 10 swings, the electric push rod 10 drives the push-pull block 9 to swing, the push-pull block 9 drives the corresponding rocker 7 to swing, the rocker 7 drives the top frame 6 to swing, and the top frame 6 drives the longitudinal sliding rail assembly 1, the longitudinal sliding block assembly 2, the transverse sliding block assembly 3, the transverse sliding rail assembly 4 and the push plate 5 to swing, so that the push plate 5 swings to a proper position. The transverse motor 33 and the longitudinal motor 22 are controlled to be turned on. The longitudinal motor 22 drives the longitudinal gear 23 to rotate, the longitudinal motor 22 is moved due to the meshing of the remaining longitudinal racks 102 of the longitudinal gear 23, the longitudinal sliding block 21 is further moved along the longitudinal sliding rail 101, the longitudinal sliding block 21 drives the transverse sliding rail assembly 4, the transverse sliding block assembly 3 and the pushing plate 5 to move along the length direction of a carriage, the transverse motor 33 drives the transverse gear 31 to rotate, the transverse gear 31 is meshed with the transverse rack 42, the transverse motor 33 is moved, the transverse sliding block 33 is further moved, the pushing plate 5 is driven by the transverse sliding block 33 to move along the width direction of the carriage, the longitudinal motor 22 is controlled to realize that the pushing plate 5 moves from a head part to a tail part, the transverse motor 33 is controlled to reciprocate, and the transverse sliding block 21 is reciprocally moved along the width direction, so that material stacking and leveling are realized.
Embodiment two: the embodiment is further described on the basis of the first embodiment, the supporting plate 41 is connected with the limiting plate assembly 12, the limiting plate assembly 12 includes two side plates 121, two ends of the lower side of the supporting plate 41 are respectively connected with the corresponding side plates 121, two ends of the side plates 121 are respectively connected with the limiting plate electric push rod 122, and a push rod end of the limiting plate electric push rod 122 is connected with the limiting plate 123. The limiting plate electric push rod 122 is operated, so that the limiting plate 123 is tightly attached to the carriage, and the edge material of the carriage is prevented from being pushed to the ground when the push plate 5 is used for leveling materials.
The type of the limiting plate electric push rod 122 is SXTL.
The workflow of this embodiment is:
the environment-friendly skip car runs to a proper position of the device composition area. The limiting plate electric push rod 122 is controlled to extend, the limiting plate 123 is tightly attached to the carriage, the electric push rod 10 is controlled to extend, the electric push rod 10 swings, the electric push rod 10 drives the push-pull block 9 to swing, the push-pull block 9 drives the corresponding rocker 7 to swing, the rocker 7 drives the top frame 6 to swing, and the top frame 6 drives the longitudinal sliding rail assembly 1, the longitudinal sliding block assembly 2, the transverse sliding block assembly 3, the transverse sliding rail assembly 4, the limiting plate assembly 12 and the push plate 5 to swing, so that the push plate 5 swings to a proper position. The transverse motor 33 and the longitudinal motor 22 are controlled to be turned on. The longitudinal motor 22 drives the longitudinal gear 23 to rotate, the longitudinal motor 22 is moved due to the meshing of the remaining longitudinal racks 102 of the longitudinal gear 23, the longitudinal sliding block 21 is further moved along the longitudinal sliding rail 101, the longitudinal sliding block 21 drives the transverse sliding rail assembly 4, the transverse sliding block assembly 3 and the pushing plate 5 to move along the length direction of a carriage, the transverse motor 33 drives the transverse gear 31 to rotate, the transverse gear 31 is meshed with the transverse rack 42, the transverse motor 33 is moved, the transverse sliding block 33 is further moved, the pushing plate 5 is driven by the transverse sliding block 33 to move along the width direction of the carriage, the longitudinal motor 22 is controlled to realize that the pushing plate 5 moves from a head part to a tail part, the transverse motor 33 is controlled to reciprocate, and the transverse sliding block 21 is reciprocally moved along the width direction, so that material stacking and leveling are realized.
While the foregoing description of the embodiments of the present utility model has been presented with reference to the drawings, it is not intended to limit the scope of the utility model, but rather, it is apparent that various modifications or variations can be made by those skilled in the art without the need for inventive work on the basis of the technical solutions of the present utility model.
Claims (8)
1. An environment-friendly skip material pile leveling device is characterized in that: comprises a top frame (6);
the longitudinal sliding rail assembly (1) is arranged on the upper side of the top frame (6) and is connected with the top frame (6);
the longitudinal sliding block assembly (2) is arranged on the upper side of the longitudinal sliding rail assembly (1) and is nested with the longitudinal sliding rail assembly (1);
a transverse sliding rail assembly (4) connected with the longitudinal sliding block assembly (2);
the transverse sliding block assembly (3) is arranged on the upper side of the transverse sliding rail assembly (4), and is nested in the transverse sliding rail assembly (4);
and the pushing plate (5) is connected with the transverse sliding block assembly (3).
2. The environment-friendly skip material piling and leveling device according to claim 1, wherein the device is characterized in that: the longitudinal sliding rail assembly (1) comprises two longitudinal sliding rails (101) and at least one longitudinal rack (102), the longitudinal sliding block assembly (2) comprises two longitudinal sliding blocks (21) and at least one longitudinal gear (23), the longitudinal sliding rails (101) and the longitudinal racks (102) are respectively connected with the top frame (6), the longitudinal sliding blocks (21) are nested and correspond to the longitudinal sliding rails (101), the longitudinal gears (23) are meshed with the corresponding longitudinal racks (102), the longitudinal gears (23) are connected with an output shaft of a longitudinal motor (22), and the longitudinal motor (22) is connected with the corresponding longitudinal sliding blocks (21).
3. The environment-friendly skip material piling and leveling device as claimed in claim 2, wherein: the transverse sliding rail assembly (4) comprises a supporting plate (41), the supporting plate (41) is arranged between two longitudinal sliding blocks (21), two longitudinal sliding blocks (21) are connected, the upper side of the supporting plate (41) is connected with a transverse sliding rail (43) and a transverse rack (42), the transverse sliding block assembly (3) comprises a transverse sliding block (33), the transverse sliding blocks (33) are nested with the transverse sliding rail (43), the upper side of the transverse sliding block (33) is connected with a transverse motor (32), an output shaft of the transverse motor (32) is connected with a transverse gear (31), and the transverse gear (31) is meshed with the transverse rack (42).
4. An environmentally friendly skip stock stacking and leveling device as claimed in claim 3, wherein: the push plate (5) is connected with the transverse sliding block (33).
5. The environment-friendly skip material piling and leveling device as claimed in claim 4, wherein: the transverse rack (42) and the supporting plate (41) form a straight groove (44), and the pushing plate (5) is matched with the straight groove (44).
6. An environmentally friendly skip stock stacking and leveling device as claimed in claim 3, wherein: limiting plate subassembly (12) are connected to backup pad (41), limiting plate subassembly (12) include two curb plates (121), the downside both ends of backup pad (41) are connected respectively and are corresponding curb plate (121), limiting plate electric putter (122) are connected respectively at the both ends of curb plate (121), limiting plate electric putter (122) push rod end connection limiting plate (123).
7. The environment-friendly skip material piling and leveling device according to claim 1, wherein the device is characterized in that: the top frame (6) is rotationally connected with two groups of rocking bars (7), each rocking bar (7) is rotationally connected with the first base (8) respectively, and at least one rocking bar (7) is connected with the push-pull block (9).
8. The environment-friendly skip material piling and leveling device as claimed in claim 7, wherein: the push-pull block (9) is rotationally connected with a push rod end of the electric push rod (10), and the electric push rod (10) is rotationally connected with the second base (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321853580.XU CN220484745U (en) | 2023-07-14 | 2023-07-14 | Environment-friendly skip material stacking and leveling device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321853580.XU CN220484745U (en) | 2023-07-14 | 2023-07-14 | Environment-friendly skip material stacking and leveling device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220484745U true CN220484745U (en) | 2024-02-13 |
Family
ID=89832602
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321853580.XU Active CN220484745U (en) | 2023-07-14 | 2023-07-14 | Environment-friendly skip material stacking and leveling device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220484745U (en) |
-
2023
- 2023-07-14 CN CN202321853580.XU patent/CN220484745U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN210084381U (en) | Vertical buffer memory device of panel | |
| CN202625756U (en) | Laminated type bi-directional pallet fork of stacking machine | |
| CN112027601A (en) | Synchronous box turnover machine | |
| CN100562636C (en) | Four-way transport mechanism | |
| CN111421017B (en) | Flattening device for intelligent manufacturing | |
| CN220484745U (en) | Environment-friendly skip material stacking and leveling device | |
| CN214880034U (en) | But highway bridge construction cyclic utilization's support bracket | |
| CN201056874Y (en) | Stereo parking apparatus | |
| CN202712339U (en) | Alternately compressed lamination station device | |
| CN203006425U (en) | Automatic turnover mechanism | |
| CN202015893U (en) | Multifunctional self-traveling type flame cutting device | |
| CN209835522U (en) | Scissor lift | |
| CN213469347U (en) | Punch press with automatic discharge mechanism | |
| CN210998976U (en) | Plate cutting device | |
| CN110217720B (en) | Material frame lifting mechanism | |
| CN219821922U (en) | Wood tray centering device for overturning platform | |
| CN216707860U (en) | Cutting device with strickle function off | |
| CN219620356U (en) | Electromagnetic stacking plate alignment flapping mechanism | |
| CN218173617U (en) | Alternate plate conveying mechanism | |
| CN214166532U (en) | Vacuum edge rolling and pushing device | |
| CN219882754U (en) | Pouring vibrating device for sleeper production | |
| CN220219165U (en) | Horizontal cutting device for ALC plate | |
| CN220080721U (en) | Multifunctional climbing frame | |
| CN112976288B (en) | Production method of automatic brick production line | |
| CN219380385U (en) | Three-way movement support truss |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |