CN210597213U - Chute construction template - Google Patents
Chute construction template Download PDFInfo
- Publication number
- CN210597213U CN210597213U CN201921438816.7U CN201921438816U CN210597213U CN 210597213 U CN210597213 U CN 210597213U CN 201921438816 U CN201921438816 U CN 201921438816U CN 210597213 U CN210597213 U CN 210597213U
- Authority
- CN
- China
- Prior art keywords
- connecting rod
- standard plate
- fixture
- standard
- sleeves
- 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
Images
Abstract
The application provides a rapid trough construction template, which comprises four panels, a clamp and a connecting rod; the four panels are parallel to each other, each panel comprises a plurality of standard plates, each standard plate is a U-shaped plate, two ends of each standard plate are provided with connecting rod sleeves, and connecting rods are inserted in the connecting rod sleeves; the standard plate is also provided with a fixture sleeve, the fixture is of a U-shaped rod structure and comprises four clamping connecting rods, and the four clamping connecting rods are respectively connected with the fixture sleeve. The standard plate is U type panel, has higher intensity and surface smoothness, can guarantee the quality of pouring of rapid trough, and polylith standard plate passes through connecting rod and the sheathed tube simple joint of connecting rod, the length of extension panel, until splicing into complete panel through the standard plate, four way panels pass through fixture and the sheathed tube joint of fixture, make up into complete construction template, guarantee construction template's overall stability, have the advantage that the installation is simple and the installation effectiveness is high.
Description
Technical Field
The application relates to the technical field of building construction, especially, relate to a rapid trough construction formwork.
Background
The torrent channel is an artificial channel with a gradient greater than a critical gradient. The function of the device is to guide water flow under the conditions of short distance and large water surface drop. In highway engineering, the rapid trough is often built on both sides of a slope and is connected with a side ditch of a road surface or directly used as a discharge port of road surface catchment, residual accumulated water on a cutting side slope can be quickly led out, and disasters such as side slope collapse, landslide, debris flow and the like caused by soaking the side slope by the accumulated water can be prevented.
In the rapid trough work progress, need install the rapid trough construction template earlier, pour concrete in the rapid trough construction template that has installed, traditional rapid trough construction template has two kinds, and one kind is design combination steel form, and another kind is the plank sheathing. The panel of design combination steel form adopts the steel sheet preparation, sets up horizontal vertical steel band or channel-section steel as the strengthening rib behind the back at the panel, and the multichannel panel passes through the concatenation of vertical connecting flange, still need squeeze into the drill rod in the subaerial in the template outside, supports the template. The self weight of the shaping combined steel template is large, the installation is complex, and the construction efficiency is low.
Adopt plank sheathing installation rapid trough construction template, plank sheathing weight is lighter, can reduce the installation degree of difficulty, improves the efficiency of construction, but plank sheathing's intensity is lower, and easy the deformation, life is short, and plank sheathing surface smoothness is poor, and clearance and wrong platform appear easily in template seam crossing, cause the pouring quality of rapid trough to be lower.
In summary, in order to pour a high-quality chute, a chute construction formwork which is simple to install and high in installation efficiency is provided, which is a problem to be solved urgently by those skilled in the art.
SUMMERY OF THE UTILITY MODEL
The application provides a rapid trough construction formwork to solve the problem that traditional rapid trough construction formwork installation is complicated and the installation effectiveness is low.
The application provides a rapid trough construction template, which comprises four panels, a clamp and a connecting rod;
the four panels are parallel to each other, each panel comprises a plurality of standard plates, each standard plate is a U-shaped plate, two ends of each standard plate are provided with connecting rod sleeves, and connecting rods are inserted in the connecting rod sleeves;
the standard plate is also provided with a fixture sleeve, the fixture is of a U-shaped rod structure and comprises four clamping rods, and the four clamping rods are respectively connected with the fixture sleeve.
Optionally, the four panels are sequentially divided into two groups, the two panels on the same side are one group, and the flat surfaces of the two panels in the same group are arranged oppositely.
Optionally, the standard plate is further provided with a reinforcing rod, and the reinforcing rod is connected with the fixture sleeve and distributed on two sides of the fixture sleeve.
Optionally, the number of the connecting rod sleeves arranged on each standard plate is 4, the connecting rod sleeves are respectively located at the U-shaped corners of the standard plates, and the axes of the connecting rod sleeves are parallel to the long side direction of the standard plates.
Optionally, the connecting rod is an L-shaped connecting pin and is inserted into the connecting rod sleeve on the two adjacent sections of standard plates;
the L-shaped connecting pin of the connecting rod has a diameter of 16mm and a long length D1Is 14cm, and has a short side length D2Is 5 cm; the connecting rod sleeve has an inner diameter of 16mm, an outer diameter of 20mm and a length D35cm steel tube.
Optionally, the number of fixture sleeves arranged on the standard plate is greater than or equal to two, and the length D of each fixture sleeve4Width D of standard plate5The same is true.
Optionally, the standard plate is rolled by a steel plate with the thickness of 2 mm.
Optionally, length D of the standard plate6Is 0.5m, 1m, 2m, 3m or 4 m.
The application provides a rapid trough construction template, which comprises four panels, a clamp and a connecting rod; the four panels are parallel to each other, each panel comprises a plurality of standard plates, each standard plate is a U-shaped plate, two ends of each standard plate are provided with connecting rod sleeves, and connecting rods are inserted in the connecting rod sleeves; the standard plate is also provided with a fixture sleeve, the fixture is of a U-shaped rod structure and comprises four clamping rods, and the four clamping rods are respectively connected with the fixture sleeve.
The standard plate is U type panel, has higher intensity and surface smoothness, can guarantee the quality of pouring of rapid trough, and polylith standard plate passes through connecting rod and the sheathed tube simple joint of connecting rod, the length of extension panel, until splicing into complete panel through the standard plate, four way panels pass through fixture and the sheathed tube joint of fixture, make up into complete construction template, guarantee construction template's overall stability, have the advantage that the installation is simple and the installation effectiveness is high.
Drawings
In order to more clearly explain the technical solution of the present application, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious to those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic view of the overall structure of a rapid trough construction formwork;
FIG. 2 is a schematic view of a partial structure of a chute construction form;
FIG. 3 is a schematic view of a connection structure of two standard plates of a rapid trough construction formwork;
FIG. 4 is a schematic view of a connecting structure of a connecting rod and a connecting rod sleeve of the rapid trough construction formwork;
FIG. 5 is a schematic view of a connecting rod structure of a rapid trough construction formwork;
FIG. 6 is a schematic diagram of a standard plate structure of a rapid trough construction formwork;
illustration of the drawings:
wherein, 1-panel, 11-standard plate, 12-connecting rod sleeve, 13-fixture sleeve, 14-reinforcing rod, 2-fixture, 21-clamping rod and 3-connecting rod.
Detailed Description
Referring to fig. 1, a schematic view of an overall structure of a rapid trough construction formwork is shown.
The application provides a rapid trough construction formwork, its characterized in that includes four panels 1, fixture 2 and connecting rod 3.
Four panel 1 is parallel to each other, panel 1 includes polylith standard plate 11, standard plate 11 is U type panel, the both ends of standard plate 11 are provided with connecting rod sleeve pipe 12, connecting rod 3 is pegged graft connecting rod sleeve pipe 12.
The standard plate 11 is further provided with a fixture sleeve 13, the fixture 2 is of a U-shaped rod structure and comprises four clamping rods 21, and the four clamping rods 21 are respectively connected with the fixture sleeve 13.
In the embodiment of the application, the panel 1 is a side baffle plate poured as a chute body of a rapid chute, and one side of the panel is required to have better flatness and strength. The four panels 1 are parallel to each other and are respectively used as two concrete baffles of the chute body for pouring the torrent chute.
Further, the standard plate 11 is a U-shaped plate, one surface of the U-shaped plate is a flat surface and serves as a concrete baffle surface for pouring a chute body of the rapid chute, and the other surface of the standard plate is a U-shaped rod structure and is used for arranging a connecting part. Through the polylith 11 concatenation lengtheners of standard plate form panel 1 adopts the polylith standard plate 11 makes things convenient for installation, dismantlement and transport in the work progress.
Furthermore, two ends of the standard plate 11 are provided with connecting rod sleeves 12, when two adjacent sections of standard plates 11 are spliced, the axes of the connecting rod sleeves 12 at the splicing positions of the two adjacent sections of standard plates 11 are aligned and are spliced together through the connecting rods 3.
Further, the fixture sleeve 13 is disposed on the standard plate 11, an axis of the fixture sleeve 13 is parallel to a width direction of the standard plate 11, a plurality of fixture sleeves 13 may be disposed on one standard plate 11, and a distance between adjacent fixture sleeves 13 is twice as long as a distance between one end of the standard plate 11 and the nearest fixture sleeve 13.
If two fixture sleeves 13 are arranged on a 2m long standard plate 11, the distance between the two fixture sleeves 13 is 1m, and the distance from the fixture sleeve 13 to the nearest end of the standard plate 11 is 0.5 m. If there is only one fixture sleeve 13, it is disposed at the middle position in the longitudinal direction of the standard plate 11.
Further, the fixture 2 is of a U-shaped rod structure, and includes four clamping rods 21, that is, one rod is connected with four perpendicular clamping rods 21, and the distance between the four clamping rods 21 is equal to the distance between the four fixture sleeves 13 at the same position on the panel 1. The fixture sleeve 13 is plugged through the four clamping rods 21 of the fixture 2.
The ideal state after the installation of the panel 1 is that the length of the panel 1 is the same as that of the chute, then both ends of the panel 1 in the same group are sealed by the baffle plates to form a four-sided closed structure, and cement is poured in the four-sided closed structure. However, in practical engineering, the length of the torrent groove is random, the length of the panel 1 is often not completely equal to that of the torrent groove, at the moment, the length of the panel 1 is set to be slightly larger than that of the torrent groove, and then the proper positions of the two ends of the panel 1 are respectively provided with a baffle, so that the distance between the two baffles is the same as that of the torrent groove.
The application provides a rapid trough construction template, which comprises four panels 1, a clamp 2 and a connecting rod 3; the four panels 1 are parallel to each other, each panel 1 comprises a plurality of standard plates 11, each standard plate 11 is a U-shaped plate, two ends of each standard plate 11 are provided with connecting rod sleeves 12, and the connecting rods 3 are inserted into the connecting rod sleeves 12; the standard plate 11 is further provided with a fixture sleeve 13, the fixture 2 is of a U-shaped rod structure and comprises four clamping rods 21, and the four clamping rods 21 are respectively connected with the fixture sleeve 13.
The standard plate 11 is a U-shaped plate, has high strength and surface flatness, and can ensure the pouring quality of a rapid trough, and a plurality of standard plates 11 are connected with the connecting rod 3 and the connecting rod sleeve 12 in a simple clamping manner, so that the length of the panel 1 is increased, the standard plates 11 are spliced into a whole panel 1 and a whole panel four times, and the panel 1 is connected with the clamping apparatus 2 and the clamping apparatus sleeve 13 in a clamping manner to form a complete construction template, so that the overall stability of the construction template is ensured, and the construction template has the advantages of simple installation and high installation efficiency.
According to the rapid trough construction template, four panels 1 are sequentially divided into two groups, two panels 1 on the same side are one group, and the flat surfaces of the two panels 1 in the same group are arranged oppositely.
In this application embodiment, four panel 1 divide into two sets ofly in proper order, and the basis of dividing is two with one side panel 1 is a set of, if according to 1 panel, 2 panels, 3 panels and 4 panels that from left to right set gradually, then 1 panel and 2 panels are a set of, and 3 panels and 4 panels are a set of.
Further, the panels 1 in the same group form a whole, and are used as a construction template for pouring a groove body on one side of the rapid trough, and the flat surfaces of the panels 1 in the same group are arranged oppositely, namely the flat surfaces face the rapid trough body.
Referring to fig. 2, a partial structure diagram of a rapid trough construction formwork is shown.
In the chute construction formwork, a reinforcing rod 14 is further disposed on the standard plate 11, and the reinforcing rod 14 is connected to the fixture sleeve 13 and distributed on two sides of the fixture sleeve 13.
In the embodiment of the present application, the reinforcing rod 14 is disposed on the standard plate 11 and located at two sides of the fixture sleeve 13, so as to further reinforce the strength of the standard plate 11 on one hand and reinforce the strength of the fixture sleeve 13 on the other hand, so that the connection between the fixture 2 and the fixture sleeve 13 is more stable, that is, the overall stability of the construction formwork is improved.
Further, the two ends of the reinforcing rod 14 are connected to the two U-shaped edges of the standard plate 11 and connected to the fixture sleeve 13.
Referring to fig. 3, a schematic view of a connection structure of two standard plates of a rapid trough construction formwork is shown.
In the chute construction formwork provided by the present invention, the number of the connecting rod sleeves 12 arranged on each standard plate 11 is 4, and the connecting rod sleeves 12 are respectively located at the U-shaped corners of the standard plate 11, and the axes of the connecting rod sleeves 12 are parallel to the long side direction of the standard plate 11.
In the embodiment of the present application, the number of each connecting rod sleeve 12 is 4, but is not limited to 4, and may be an even number greater than 4, for example, 6, and the number of connecting rod sleeves 12 may be increased as appropriate according to the width of the standard plate 11, and the larger the width of the standard plate 11, the larger the number of connecting rod sleeves 12. The purpose is to ensure the connection strength between the adjacent standard boards 11.
Furthermore, 4 connecting rod sleeves 12 are uniformly distributed at two ends of the standard plate 11, are respectively positioned at the U-shaped corner of the standard plate 11, and are welded at two sides of the U-shaped corner, and the connecting rod sleeves 12 are arranged at the U-shaped corner, so that on one hand, welding points can be increased, and the welding strength is ensured; on the other hand, the U-shaped corner is located at the edge of the standard plate 11, which is beneficial to the connection stability of two adjacent sections of the standard plate 11.
Furthermore, the axis of the connecting rod sleeve 12 is parallel to the long side direction of the standard plate 11, so that the connection between two adjacent sections of the standard plates 11 is simpler.
Referring to fig. 4, a schematic view of a connection structure between a connection rod of a rapid trough construction formwork and a connection rod sleeve is shown.
Referring to fig. 5, a schematic diagram of a connecting rod structure of a rapid trough construction formwork is shown.
Referring to fig. 6, a schematic diagram of a standard plate structure of a rapid trough construction formwork is shown.
The application provides a rapid trough construction formwork, connecting rod 3 is L type connecting pin, and plug connects the connecting rod sleeve pipe 12 on two sections adjacent standard plates 11.
The L-shaped connecting pin of the connecting rod 3 has a diameter of 16mm and a long edge length D1Is 14cm, and has a short side length D2Is 5 cm; the connecting rod sleeve 12 has an inner diameter of 16mm, an outer diameter of 20mm and a length D35cm steel tube.
In the embodiment of the present application, the connecting rod 3 is an L-shaped connecting pin, and the length of the long side of the L-shaped connecting pin is D1Is 14cm, and has a short side length D2Is 5 cm. The long limit is used for pegging graft two mutual chucking connecting rod sleeve pipe 12, the minor face is handheld end, and long limit is pegged graft behind the connecting rod sleeve pipe 12, can make the minor face laminating certain angle with the minor face rotation standard plate 11.
Further, the inner diameter of the connecting rod casing 12 is equal to the diameter of the connecting rod 3, and is 16 mm. The outer diameter of the connecting rod sleeve 12 is 20mm, and the length D of the connecting rod sleeve 123Is 5 cm.
The application provides a rapid trough construction formwork, set up on the standard board 11 fixture sleeve pipe 13's quantity is more than or equal to two, fixture sleeve pipe 13's length D4Width D of the standard board 115The same is true.
In the embodiment of the application, the number of the fixture sleeves 13 arranged on the standard plate 11 is greater than or equal to two, the fixture sleeves 13 are used for clamping the fixtures 2, the higher the density of the fixture sleeves 13 is, the better the four connection stability between the panels 1 is, and the higher the installation strength of the construction formwork is. However, the higher the density of the fixture sleeve 13, the more complicated the installation and the lower the installation efficiency, so that a reasonable density needs to be adaptively set according to the width of the chute body of the chute. The installation complexity is reduced as much as possible while the installation strength of the construction template is ensured.
Further, the length D of the chuck sleeve 134Width D of the standard board 115Same, the fixture sleeveTwo ends of the clamp sleeve 13 are welded to two U-shaped edges of the U-shaped plate of the standard plate 11, and flange plate teeth for welding are rolled on the U-shaped edges of the U-shaped plate of the standard plate 11 so as to increase welding points with the clamp sleeve 13 and the reinforcing rod 14.
The application provides a rapid trough construction formwork, standard plate 11 adopts thickness to be 2 mm's steel sheet book system.
In the embodiment of the application, the standard plate 11 adopts thickness to roll up the system for 2 mm's steel sheet, adopts the self weight of reduction construction template that the steel sheet that thickness is thinner can be very big, through fixture 2's joint satisfies the stability and the intensity demand of template, and further passes through the intensity of construction template is strengthened to stiffener 14.
The application provides a rapid trough construction template, length D of standard board 116Is 0.5m, 1m, 2m, 3m or 4 m.
In the embodiment of the present application, the length D of the standard board 116Is 0.5m, 1m, 2m, 3m or 4 m. The length of the rapid trough belongs to random length according to the field construction condition, so that the standard plates 11 with various lengths need to be prepared, when the rapid trough is installed, the standard plate 11 with longer length is preferentially selected, the standard plate 11 with shorter length is selected, and the total length is spliced into the whole construction template.
The application provides a rapid trough construction template, which comprises four panels 1, a clamp 2 and a connecting rod 3; the four panels 1 are parallel to each other, each panel 1 comprises a plurality of standard plates 11, each standard plate 11 is a U-shaped plate, two ends of each standard plate 11 are provided with connecting rod sleeves 12, and the connecting rods 3 are inserted into the connecting rod sleeves 12; the standard plate 11 is further provided with a fixture sleeve 13, the fixture 2 is of a U-shaped rod structure and comprises four clamping rods 21, and the four clamping rods 21 are respectively connected with the fixture sleeve 13.
The standard plate 11 is a U-shaped plate, has high strength and surface flatness, and can ensure the pouring quality of a rapid trough, and a plurality of standard plates 11 are connected with the connecting rod 3 and the connecting rod sleeve 12 in a simple clamping manner, so that the length of the panel 1 is increased, the standard plates 11 are spliced into a whole panel 1 and a whole panel four times, and the panel 1 is connected with the clamping apparatus 2 and the clamping apparatus sleeve 13 in a clamping manner to form a complete construction template, so that the overall stability of the construction template is ensured, and the construction template has the advantages of simple installation and high installation efficiency.
The embodiments provided in the present application are only a few examples of the general concept of the present application, and do not limit the scope of the present application. Any other embodiments extended according to the scheme of the present application without inventive efforts will be within the scope of protection of the present application for a person skilled in the art.
Claims (8)
1. A rapid trough construction template is characterized by comprising four panels (1), clamps (2) and connecting rods (3);
the four panels (1) are parallel to each other, the panels (1) comprise a plurality of standard plates (11), the standard plates (11) are U-shaped plates, connecting rod sleeves (12) are arranged at two ends of each standard plate (11), and the connecting rods (3) are inserted into the connecting rod sleeves (12);
the standard plate (11) is further provided with a fixture sleeve (13), the fixture (2) is of a U-shaped rod structure and comprises four clamping rods (21), and the four clamping rods (21) are respectively connected with the fixture sleeve (13).
2. The chute construction formwork of claim 1, wherein four said panels (1) are divided into two groups in sequence, two said panels (1) on the same side are one group, and the flat surfaces of two said panels (1) of the same group are oppositely arranged.
3. Chute construction formwork according to claim 1, characterized in that said standard plate (11) is further provided with reinforcement bars (14), said reinforcement bars (14) being connected to said fixture sleeves (13) and being distributed on both sides of said fixture sleeves (13).
4. The chute construction formwork according to claim 1, wherein the number of the connecting rod sleeves (12) provided on each standard plate (11) is 4, and the connecting rod sleeves are respectively located at the U-shaped corners of the standard plate (11), and the axes of the connecting rod sleeves (12) are parallel to the long side direction of the standard plate (11).
5. The rapid trough construction formwork according to claim 1, wherein the connecting rod (3) is an L-shaped connecting pin and is inserted into a connecting rod sleeve (12) on two adjacent sections of standard plates (11);
the diameter of the L-shaped connecting pin of the connecting rod (3) is 16mm, and the length of the long edge D1Is 14cm, and has a short side length D2Is 5 cm; the connecting rod sleeve (12) has an inner diameter of 16mm, an outer diameter of 20mm and a length D35cm steel tube.
6. Chute construction formwork according to claim 1, characterized in that the number of fixture sleeves (13) provided on said standard plate (11) is greater than or equal to two, the length D of said fixture sleeves (13) being4Width D of the standard plate (11)5The same is true.
7. The chute construction formwork of claim 1, wherein the standard plate (11) is rolled with a thickness of 2 mm.
8. Chute construction formwork according to claim 1, characterized in that the length D of the standard plate (11)6Is 0.5m, 1m, 2m, 3m or 4 m.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921438816.7U CN210597213U (en) | 2019-08-30 | 2019-08-30 | Chute construction template |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921438816.7U CN210597213U (en) | 2019-08-30 | 2019-08-30 | Chute construction template |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210597213U true CN210597213U (en) | 2020-05-22 |
Family
ID=70716575
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921438816.7U Active CN210597213U (en) | 2019-08-30 | 2019-08-30 | Chute construction template |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210597213U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110424335A (en) * | 2019-08-30 | 2019-11-08 | 中交路桥北方工程有限公司 | Chute construction formwork and application method |
-
2019
- 2019-08-30 CN CN201921438816.7U patent/CN210597213U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110424335A (en) * | 2019-08-30 | 2019-11-08 | 中交路桥北方工程有限公司 | Chute construction formwork and application method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN210597213U (en) | Chute construction template | |
| CN114232988B (en) | Formwork supporting method for floor post-cast strip and formwork used by same | |
| CN214696841U (en) | Aluminum template for building corner | |
| CN214220351U (en) | Energy-saving assembled building wall | |
| CN110130543B (en) | Modularized wall | |
| CN216840803U (en) | Temporary support structure for replacing shear wall concrete | |
| CN109869044A (en) | A kind of modularization dismounting enclosure wall | |
| CN210507154U (en) | Concrete splicing formwork for road and bridge construction | |
| CN214329503U (en) | Prefabricated overlength floor crack control seam structure | |
| CN210013093U (en) | Novel concrete road side form template reinforcing device | |
| CN209670154U (en) | A kind of prefabricated superimposed sheet conveniently piled up | |
| CN210622017U (en) | Modularization wall body | |
| CN210238705U (en) | Concrete ditch | |
| CN113136989A (en) | Assembled shear force wall tooth's socket type connection structure | |
| CN206570711U (en) | Novel compositions aluminum alloy pattern plate | |
| CN207211738U (en) | One kind is encorbelmented flange beam formwork frame | |
| CN213329612U (en) | Environment-friendly concrete circular hole superimposed sheet | |
| CN212689385U (en) | Light steel truss structure | |
| CN217128500U (en) | High-strength concrete precast slab | |
| CN210684437U (en) | A welded steel bar net for bridge pavement | |
| CN217518163U (en) | L shaped steel post template reinforcing apparatus | |
| CN210712561U (en) | I-beam panel suspended cast-in-place support | |
| CN215948510U (en) | Prefabricated assembled shaped steel concrete column concatenation node structure | |
| CN217123510U (en) | Prefabricated case roof beam framework of steel reinforcement location bed-jig | |
| CN212896825U (en) | Large-span design steel bar truss mounting structure |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |