CN218203954U - Sound barrier beam suitable for confined space - Google Patents

Sound barrier beam suitable for confined space Download PDF

Info

Publication number
CN218203954U
CN218203954U CN202221608921.2U CN202221608921U CN218203954U CN 218203954 U CN218203954 U CN 218203954U CN 202221608921 U CN202221608921 U CN 202221608921U CN 218203954 U CN218203954 U CN 218203954U
Authority
CN
China
Prior art keywords
beam body
auxiliary
sound barrier
locking
notch
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
Application number
CN202221608921.2U
Other languages
Chinese (zh)
Inventor
吴玉伟
张新艺
雷志伟
崔长宽
杜休
杨旭峰
万喜斌
张昭萍
杨彬
周超
万海洋
李明生
王彪
常金虎
马海彬
王奔
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
China Railway Sixth Group Co Ltd
Fengqiao Bridge Co Ltd of China Railway Sixth Group Co Ltd
Original Assignee
China Railway Sixth Group Co Ltd
Fengqiao Bridge Co Ltd of China Railway Sixth Group Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by China Railway Sixth Group Co Ltd, Fengqiao Bridge Co Ltd of China Railway Sixth Group Co Ltd filed Critical China Railway Sixth Group Co Ltd
Priority to CN202221608921.2U priority Critical patent/CN218203954U/en
Application granted granted Critical
Publication of CN218203954U publication Critical patent/CN218203954U/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02TCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T30/00Transportation of goods or passengers via railways, e.g. energy recovery or reducing air resistance

Landscapes

  • Bridges Or Land Bridges (AREA)

Abstract

The utility model provides a sound barrier roof beam suitable for restricted space, include the roof beam body and inlay the dress connecting plate. Wherein the top end of the beam body is provided with a horizontal end face; the beam body is provided with two notches which are respectively positioned at two ends of the horizontal end surface along the transverse direction of the beam body; the beam body is provided with two groups of bayonet structures which are respectively in one-to-one correspondence with the two gaps, and each group of bayonet structures comprises a plurality of openings which are arranged along the longitudinal direction of the beam body at intervals. The two groups of embedded connecting plates are respectively arranged corresponding to the two groups of bayonet structures; each group of embedded connecting plates comprises a plurality of auxiliary templates, the plurality of auxiliary templates are respectively in one-to-one correspondence and adaptive arrangement with the corresponding openings and are connected with the beam body; the top end of each auxiliary template is higher than the bottom surface of the notch. The utility model provides a build the mould when being applicable to the sound barrier roof beam in restricted space can avoid cast in situ again, reduce staff's work load to occupation space is minimum, reduces the construction degree of difficulty, and the practicality is strong.

Description

Sound barrier beam suitable for confined space
Technical Field
The utility model belongs to the technical field of the railway engineering construction, concretely relates to sound barrier roof beam suitable for restricted space.
Background
Railway transportation is a land transportation mode in which a locomotive pulls a train vehicle to travel on two parallel rails, and the traditional mode is steel wheel traveling. The rails provide an extremely smooth and hard medium on which the train wheels roll with minimal friction, making the upper person more comfortable, and it also saves energy. If properly configured, rail transport can save five to seven costs of energy over road transport when carrying the same weight. Moreover, the rails can evenly disperse the weight of the train, so that the loading capacity of the train is greatly improved. The railway engineering needs to consider the environmental protection requirement, and the influence of noise on nearby residents needs to be reduced when passing through the residential area.
In the prior art, when a railway bridge is built in a residential area, a standard sound barrier beam is adopted, and the construction of the sound barrier beam generally comprises an in-site prefabricated part and a cast-in-place part (two transverse sides to ensure the installation of a ballast retaining wall, a sound barrier, a cable and the like) after erection. However, when the sound barrier beam passes through a living area, the space of a construction site is narrow, or because of parallel multiple lines, the transverse length of a part needing cast-in-place is long, the sound barrier beam is limited by space after being erected, the sound barrier beam cannot be cast-in-place, a template is difficult to erect, the construction difficulty is very high, and the safety, the quality and the construction period of the sound barrier beam cannot be guaranteed.
SUMMERY OF THE UTILITY MODEL
An embodiment of the utility model provides a sound barrier roof beam suitable for restricted space aims at solving the problem that the practicality is poor that the construction of current sound barrier roof beam leads to because of the narrow region in unable adaptation space.
In order to achieve the above object, the utility model adopts the following technical scheme: there is provided a sound barrier beam adapted for use in a confined space, comprising:
the top end of the beam body is provided with a horizontal end face; setting the length direction of the beam body as a first direction, and setting the horizontal direction vertical to the first direction as a second direction; the beam body is provided with two notches, and the two notches are respectively positioned at two ends of the horizontal end surface along the second direction; two groups of bayonet structures which are respectively in one-to-one correspondence with the two gaps are arranged on the beam body, each group of bayonet structures comprises a plurality of gaps which are arranged at intervals along the first direction, and each gap penetrates through the corresponding gap along the vertical direction; and
the two groups of embedded connecting plates are respectively arranged corresponding to the two groups of bayonet structures; each group of the embedded connecting plates comprises a plurality of auxiliary templates, the plurality of auxiliary templates correspond to the corresponding openings one by one and are arranged in a matching mode and are connected with the beam body; the top end of each auxiliary template is higher than the bottom surface of the notch, and is used for limiting the concrete in the notch when the notch is poured.
In a possible implementation manner, the cross section of each notch is an isosceles trapezoid groove.
In one possible implementation, the top end of the auxiliary template is lower than the horizontal end surface.
In one possible implementation, each of the auxiliary formworks includes a bottom plate, a side plate, and an extension plate; the bottom plate is arranged along the vertical direction and is abutted against the bottom surface of the gap; the two side plates are arranged along the vertical direction and are respectively and integrally connected with the bottom plate so as to be respectively abutted against the two side walls of the opening; the extension plates are two and are respectively connected with the two side plates in an integrated manner and are arranged in parallel with the bottom plate so as to be abutted against the side end face of the beam body.
In a possible implementation manner, the sound barrier beam suitable for the limited space further comprises a plurality of groups of locking pieces, wherein the locking pieces of each group are respectively arranged in one-to-one correspondence with the auxiliary templates; each set of locking pieces comprises at least two locking bolts, and each locking bolt is uniformly distributed on the two extension plates so as to lock the extension plates to the beam body.
In one possible implementation, the beam body includes:
the two T-shaped beams are arranged in parallel along the second direction at intervals, and each T-shaped beam is provided with a horizontal plane; the two notches are respectively arranged on the two horizontal planes;
the filling structure is arranged between the two T-shaped beams, is used for connecting the two horizontal planes and is combined with the two horizontal planes together to form the horizontal end face; and
a plurality of transverse tensioning structures are arranged, each transverse tensioning structure is arranged in one-to-one correspondence with each notch in any one group of bayonet structures, and the transverse tensioning structures are used for locking the two corresponding auxiliary templates along the second direction and locking the T-shaped beam and the filling structure;
the T-shaped beam and the filling structure are provided with through holes for the transverse tensioning structure to pass through; and the bottom plate is provided with a round hole for the transverse tensioning structure to pass through.
In one possible implementation, the lateral tensioning structure includes an anchor and an anchor cable; the number of the anchorage devices is two, and the two anchorage devices are respectively arranged in the corresponding two gaps and are abutted against the bottom plate; the anchor cable penetrates through the via hole and the round hole respectively, and two ends of the anchor cable are connected with the two anchors respectively.
In this implementation/application embodiment, the horizontal end face on the beam body can guarantee the construction of the railway. The gap on the beam body can be convenient for the cast-in-place in the later stage, and then the construction of the blocking ballast wall is guaranteed. The setting up of opening mainly can guarantee to provide a plurality of operable spaces in the both sides of roof beam body second direction, and then avoids too much occupying the space in the roof beam body outside, guarantees to adapt to narrow space. And the setting of auxiliary template can protect the outside wall of roof beam body in the second direction, because of the top is higher than the bottom surface of breach, can directly enclose with the breach and close and form the casting die moreover, builds the casting die again when can avoiding cast in situ, reduces staff's work load to occupation space is minimum, reduces the construction degree of difficulty, and the practicality is strong.
Drawings
Fig. 1 is a schematic front view of a sound barrier beam suitable for a confined space according to an embodiment of the present invention;
fig. 2 is a schematic side view (partially in section) of a sound barrier beam suitable for a confined space according to an embodiment of the present invention;
fig. 3 is a schematic top view (partially) of a sound barrier beam suitable for a confined space according to an embodiment of the present invention;
description of reference numerals:
10. a beam body; 11. a T-shaped beam; 111. a notch; 112. opening the gap; 12. filling the structure; 13. transversely tensioning the structure; 131. an anchorage device; 132. an anchor cable; 20. an auxiliary template; 21. a base plate; 22. a side plate; 23. An extension plate; 30. a locking member.
Detailed Description
In order to make the technical problem, technical solution and beneficial effects to be solved by the present invention more clearly understood, the following description is made in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.
Referring to fig. 1 to 3, a sound barrier beam suitable for a confined space according to the present invention will now be described. The sound barrier beam suitable for the limited space comprises a beam body 10 and an embedded connecting plate. Wherein, the top end of the beam body 10 is provided with a horizontal end surface; setting the length direction of the beam body 10 as a first direction, and setting the horizontal direction vertical to the first direction as a second direction; the beam body 10 is provided with two notches 111, and the two notches 111 are respectively located at two ends of the horizontal end surface along the second direction; two sets of bayonet structures which are respectively in one-to-one correspondence with the two notches 111 are arranged on the beam body 10, each bayonet structure comprises a plurality of notches 112 which are arranged at intervals along a first direction, and each notch 112 penetrates through the corresponding notch 111 along the vertical direction. The two groups of embedded connecting plates are respectively arranged corresponding to the two groups of bayonet structures; each group of embedded connecting plates comprises a plurality of auxiliary templates 20, the plurality of auxiliary templates 20 correspond to the corresponding openings 112 one by one and are arranged in a matching way and are connected with the beam body 10; the top end of each auxiliary template 20 is higher than the bottom surface of the notch 111, and is used for limiting the concrete in the notch 111 when the notch 111 is poured.
Compared with the prior art, the sound barrier beam applicable to the limited space provided by the embodiment has the advantages that the horizontal end surface on the beam body 10 can ensure the construction of a railway. The notch 111 on the beam body 10 can facilitate the later-stage cast-in-place, so as to ensure the construction of the ballast retaining wall. The setting of opening 112 mainly can guarantee to provide a plurality of operable spaces in the both sides of roof beam body 10 second direction, and then avoids too much occupying the space in the roof beam body 10 outside, guarantees to adapt to narrow space. And supplementary template 20's setting can protect the outside wall of roof beam body 10 in the second direction, because of the top is higher than the bottom surface of breach 111, can directly enclose with breach 111 and close and form the casting mould in addition, can avoid building the casting mould again when cast in situ, reduces staff's work load to occupation space is minimum, reduces the construction degree of difficulty, and the practicality is strong.
It should be noted that, the notch 111 is mainly set to ensure the construction of the ballast retaining wall, reinforcing steel bars are bound in the notch 111, and the reinforcing steel bars of the ballast retaining wall are connected with the reinforcing steel bars in the notch 111, and the ballast retaining wall is the prior art and is not described herein again. This scheme is mainly in the second direction, need not to pour the part in the fender tiny fragments of stone, coal, etc. wall outside again, and then can be very big reduce holistic distance in the second direction, guarantee to adapt to narrow space, pour work in addition and also obtained effectual going on. For a sound barrier wall, the bottom may be directly fixedly connected to each auxiliary form 20, which may be bolted. Other components, such as cables, may be disposed on the beam 10 and below the notch 111.
In some embodiments, the above-described gap 112 may be configured as shown in FIG. 3. Referring to fig. 3, each slit 112 has a cross section of an isosceles trapezoid, which can increase the operable space to some extent. In addition, because the auxiliary template 20 is matched with the notch 112, the abutting area of the auxiliary template 20 and the notch 112 can be increased, and the matched abutting joint of the auxiliary template 20 and the notch 112 is further ensured.
In this embodiment, the operable space is understood to be that the bottom end of the sound barrier wall may be located in the gap 112.
In some embodiments, the auxiliary form 20 may be configured as shown in fig. 1. Referring to fig. 1, the top end of the auxiliary form 20 is lower than the horizontal end surface, and the structure can ensure that after cast in place, the concrete filled and hardened in the notch 111 can form an inclined surface structure, and the inclined surface structure is connected with the horizontal end surface, so that the accumulated water can be guided out.
In some embodiments, the auxiliary form 20 may be configured as shown in fig. 3. Referring to fig. 3, each auxiliary form 20 includes a bottom plate 21, side plates 22, and an extension plate 23; the bottom plate 21 is arranged along the vertical direction and is abutted against the bottom surface of the gap 112; two side plates 22 are arranged, and the two side plates 22 are both arranged along the vertical direction and are respectively and integrally connected with the bottom plate 21 so as to be respectively abutted against the two side walls of the notch 112; the two extension plates 23 are provided, and the two extension plates 23 are integrally connected to the two side plates 22, respectively, and are arranged parallel to the bottom plate 21 so as to abut against the side end surfaces of the beam body 10. The structure of auxiliary template 20 can guarantee with opening 112's adaptation, this kind of structure can form with breach 111 combination and pour and use the mould, and its occupation space in the second direction is less moreover, simple structure, and the practicality is strong.
In the present embodiment, the bottom plate 21, the side plate 22, and the extension plate 23 are all steel plates and are formed integrally. Two auxiliary formworks 20 installed in two adjacent cutouts 112 are butted against two extension plates 23 adjacent to each other along the first direction.
In some embodiments, referring to fig. 2, the sound barrier beam for confined spaces further comprises locking members 30, wherein the locking members 30 are provided in a plurality of groups, and each group of locking members 30 is provided in one-to-one correspondence with each auxiliary form 20; each set of locking members 30 comprises at least two locking bolts, each locking bolt being evenly distributed over the two extension plates 23 to lock the extension plates 23 to the beam 10. Through the setting of locking bolt, can directly install auxiliary template 20 adaptation in opening 112 after the roof beam body 10 is prefabricated, convenient operation, the practicality is strong.
In some embodiments, the beam 10 may be configured as shown in fig. 2. Referring to fig. 2, the girder body 10 includes a T-shaped girder 11, a filling structure 12, and a lateral tension structure 13. Two T-shaped beams 11 are arranged, the two T-shaped beams 11 are arranged in parallel along a second direction at intervals, and each T-shaped beam 11 is provided with a horizontal plane; the two notches 111 are respectively arranged on two horizontal planes. The filling structure 12 is disposed between the two T-beams 11, and is used to connect the two horizontal planes and combine with the two horizontal planes to form a horizontal end surface. The plurality of transverse tensioning structures 13 are arranged, and each transverse tensioning structure 13 is arranged in one-to-one correspondence with each opening 112 in any one group of bayonet structures, and is used for locking the two corresponding auxiliary formworks 20 along the second direction and locking the T-shaped beam 11 and the filling structure 12. Through holes for the transverse tension structure 13 to pass through are formed in the T-shaped beam 11 and the filling structure 12; the bottom plate 21 is provided with a circular hole for the transverse tension structure 13 to pass through. The difficulty of prefabrication and transportation can be reduced by the mode of combining the two T-shaped beams 11, and the filling structure 12 is used for supplementing, so that the construction on site is convenient. The transverse tensioning structure 13 can lock the T-shaped beam 11 and the filling structure 12 in the second direction, so that the overall stability is ensured, the structure is simple, and the practicability is high.
It should be noted that the filling structure 12 may be steel bar and concrete, and is cast in place. Because every T type roof beam 11 is prefabricated, and weight is also great moreover, at the in-process of setting up, adopts this kind of split type structure, can guarantee the convenience of transportation, and this technique is prior art, and no longer gives details here.
In addition, the tension structure is connected to each of the two corresponding auxiliary formworks 20, and the auxiliary formworks 20 themselves are configured to simultaneously grip the side wall surfaces outside the notch 112, thereby preventing the outer side wall surfaces of the T-shaped beam 11 from falling due to weather, and protecting the T-shaped beam 11.
In some embodiments, the transverse tensioning structure 13 may be configured as shown in fig. 2. Referring to fig. 2, the transverse tensioning structure 13 includes an anchor 131 and an anchor cable 132; two anchorage devices 131 are arranged, and the two anchorage devices 131 are respectively arranged in the two corresponding gaps 112 and are abutted against the bottom plate 21; the anchor cable 132 passes through the through hole and the circular hole, and both ends of the anchor cable 132 are connected to the two anchors 131, respectively. Because the auxiliary formworks 20 are arranged on the two sides of the beam body 10, the auxiliary formworks 20 are under the action of tensile force, and the contact area between the auxiliary formworks 20 and the beam body 10 can be increased relative to the anchorage device 131, so that the stress balance of the box body is ensured, and the stability of the beam body 10 is ensured.
In this embodiment, an anchor box and an anchor pad may be added to mainly ensure locking of the T-beam 11 and the filling structure 12, and the locking manner by the anchor 131 and the anchor cable 132 is the prior art and will not be described herein again.
The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims (7)

1. A sound barrier beam adapted for use in confined spaces, comprising:
the top end of the beam body is provided with a horizontal end face; setting the length direction of the beam body as a first direction, and setting the horizontal direction perpendicular to the first direction as a second direction; the beam body is provided with two notches, and the two notches are respectively positioned at two ends of the horizontal end surface along the second direction; two groups of bayonet structures which are respectively in one-to-one correspondence with the two gaps are arranged on the beam body, each group of bayonet structures comprises a plurality of gaps which are arranged at intervals along the first direction, and each gap penetrates through the corresponding gap along the vertical direction; and
two groups of embedded connecting plates are arranged, and the two groups of embedded connecting plates are respectively arranged corresponding to the two groups of bayonet structures; each group of the embedded connecting plates comprises a plurality of auxiliary templates, the plurality of auxiliary templates correspond to the corresponding openings one by one and are arranged in a matching mode and are connected with the beam body; the top end of each auxiliary template is higher than the bottom surface of the notch, and is used for limiting the concrete in the notch when the notch is poured.
2. An acoustic barrier beam adapted for confined spaces as claimed in claim 1 wherein each of said slits is an isosceles trapezoidal shaped slot in cross section.
3. The sound barrier beam adapted for confined spaces as claimed in claim 2 wherein said auxiliary form has a top end below said horizontal end surface.
4. A sound barrier beam adapted for use in confined spaces as claimed in claim 3, wherein each of said auxiliary formworks includes a bottom plate, side plates and an extension plate; the bottom plate is arranged along the vertical direction and is abutted against the bottom surface of the gap; the two side plates are arranged along the vertical direction and are respectively and integrally connected with the bottom plate so as to be respectively abutted against the two side walls of the opening; the two extending plates are respectively connected with the two side plates in an integrated mode and are arranged in parallel to the bottom plate so as to be abutted to the side end face of the beam body.
5. The sound barrier beam adapted for confined spaces of claim 4 further comprising locking members, said locking members being provided in a plurality of sets, each set of said locking members being disposed in one-to-one correspondence with each of said auxiliary forms; each set of locking pieces comprises at least two locking bolts, and each locking bolt is uniformly distributed on the two extension plates so as to lock the extension plates to the beam body.
6. The sound barrier beam for confined spaces as claimed in claim 4, wherein said beam body comprises:
the two T-shaped beams are arranged in parallel along the second direction at intervals, and each T-shaped beam is provided with a horizontal plane; the two notches are respectively arranged on the two horizontal planes;
the filling structure is arranged between the two T-shaped beams, is used for connecting the two horizontal planes and is combined with the two horizontal planes together to form the horizontal end face; and
a plurality of transverse tensioning structures are arranged, each transverse tensioning structure is arranged in one-to-one correspondence with each notch in any one group of bayonet structures, and the transverse tensioning structures are used for locking the two corresponding auxiliary templates along the second direction and locking the T-shaped beam and the filling structure;
the T-shaped beam and the filling structure are provided with through holes for the transverse tensioning structure to pass through; and the bottom plate is provided with a round hole for the transverse tensioning structure to pass through.
7. The sound barrier beam adapted for confined spaces as claimed in claim 6, wherein said lateral tensioning structure includes anchors and anchor lines; the number of the anchorage devices is two, and the two anchorage devices are respectively arranged in the corresponding two gaps and are abutted against the bottom plate; the anchor cable penetrates through the through hole and the round hole respectively, and two ends of the anchor cable are connected with the two anchors respectively.
CN202221608921.2U 2022-06-24 2022-06-24 Sound barrier beam suitable for confined space Active CN218203954U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202221608921.2U CN218203954U (en) 2022-06-24 2022-06-24 Sound barrier beam suitable for confined space

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202221608921.2U CN218203954U (en) 2022-06-24 2022-06-24 Sound barrier beam suitable for confined space

Publications (1)

Publication Number Publication Date
CN218203954U true CN218203954U (en) 2023-01-03

Family

ID=84647219

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202221608921.2U Active CN218203954U (en) 2022-06-24 2022-06-24 Sound barrier beam suitable for confined space

Country Status (1)

Country Link
CN (1) CN218203954U (en)

Similar Documents

Publication Publication Date Title
CN102926299B (en) Railway elevating and fixing device and railway bridge and culvert construction method adopting railway elevating and fixing device
JP2008542595A (en) Fixed track for rail vehicles
US4905896A (en) Railroad roadway for high speed rail-mounted vehicles
KR101256130B1 (en) ease precast girder and bridge using the same
CN203065950U (en) Railway bridge composed of simply-supported T-shaped beams
CN113047094A (en) Guide rail type rubber wheel system steel-concrete combined track beam structure and construction method thereof
CN215758485U (en) Precast concrete bridge main part mosaic structure
RU2293810C1 (en) Reinforced concrete sleeper
KR100650411B1 (en) Tunnel cover plate
CN218203954U (en) Sound barrier beam suitable for confined space
KR101262755B1 (en) Plate girder railway bridge having integrated cross beam and construction method using the same
KR101187282B1 (en) Railway bridge constructing method using 2 post type abutment structure
JP4585614B1 (en) Method for constructing synthetic steel slab bridge, ribbed steel slab, and synthetic steel slab bridge
JP2021042610A (en) Culvert structure and construction method therefor
KR102050553B1 (en) Composite through bridge and the construction method thereof
CN115058957A (en) Dual-purpose trestle supporting structure
CN211772757U (en) Seamless anti-bumping structure for middle-small span simply-supported highway bridge end part
CN108239896A (en) Existing railway Disease Treatment of Foundation Base fixed track usage plan constructing structure and construction method
CN211713557U (en) Reinforced concrete crossing plate and level crossing structure
JP2000008304A (en) Pedestal for rail road work beam and execution method of pedestal for rail road work beam
CN111926710A (en) Overhead fixing device for multi-track railway
CN202865708U (en) Railway aerial fixing device
JP4080652B2 (en) Railway viaduct girder
CN111893816A (en) Rubber-tyred trolley car guide rail, rail and road
CN220373540U (en) Whole hole grouting precast railway box girder construction device

Legal Events

Date Code Title Description
GR01 Patent grant
GR01 Patent grant