CN208496119U - A kind of embedding benefit section welding structure of U rib - Google Patents

A kind of embedding benefit section welding structure of U rib Download PDF

Info

Publication number
CN208496119U
CN208496119U CN201821056683.2U CN201821056683U CN208496119U CN 208496119 U CN208496119 U CN 208496119U CN 201821056683 U CN201821056683 U CN 201821056683U CN 208496119 U CN208496119 U CN 208496119U
Authority
CN
China
Prior art keywords
rib
unit
side plate
rib unit
embedding
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.)
Expired - Fee Related
Application number
CN201821056683.2U
Other languages
Chinese (zh)
Inventor
马骉
高兴
王青桥
舒先庆
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.)
WUHAN LIXIN AUTOMATION TECHNOLOGY Co Ltd
Shanghai Municipal Engineering Design Insitute Group Co Ltd
Original Assignee
WUHAN LIXIN AUTOMATION TECHNOLOGY Co Ltd
Shanghai Municipal Engineering Design Insitute 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 WUHAN LIXIN AUTOMATION TECHNOLOGY Co Ltd, Shanghai Municipal Engineering Design Insitute Group Co Ltd filed Critical WUHAN LIXIN AUTOMATION TECHNOLOGY Co Ltd
Priority to CN201821056683.2U priority Critical patent/CN208496119U/en
Application granted granted Critical
Publication of CN208496119U publication Critical patent/CN208496119U/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Landscapes

  • Butt Welding And Welding Of Specific Article (AREA)

Abstract

The utility model discloses a kind of embedding benefit section welding structures of U rib, the embedding benefit section includes top connecting plate, the first side plate and the second side plate, the length of the top connecting plate, the first side plate and the second side plate is adapted with the first U rib unit with the spacing between the 2nd U rib unit, first side plate and second side plate are end to end with two side plates of the first U rib unit and the 2nd U rib unit respectively, and the top connecting plate and the top plate of the first U rib unit and the 2nd U rib unit are end to end;Be welded and fixed being integrated by two-sided welding or setting welding backing between first side plate and second side plate and the bottom plate.It realizes the embedding reverse side appearance of weld for mending section butt weld of U rib and the embedding benefit section fillet weld weld joint on inner side forming of U rib, eliminates the embedding natural notch mended on the inside of section of U rib, the U rib embedding local fatigue service life for mending section greatly improved.

Description

A kind of embedding benefit section welding structure of U rib
Technical field
The utility model relates to the welding technology fields of U rib, and in particular, to a kind of embedding benefit section welding structure of U rib.
Background technique
Steel box-girder is the important component in bridge bearing structure, and steel box-girder is generally Orthotropic Steel Bridge Deck, main It is used to provide support, avoids bridge deformation.Steel box-girder generally comprises the structures such as top plate and bottom plate, and the top plate and bottom plate are general It is welded by U rib and bottom plate.
Currently, bridge U-rib can use interior welding technology, two-sided welding is realized, U rib and panel are greatly improved The fatigue life of welding point.It since steel box-girder is generally longer, needs to connect in multiple U ribs, U rib is connected in building-site When, generally use two methods: 1. use splice bar bolting mode, and the method anti-fatigue performance is superior, site construction letter It is single, but make trouble, high production cost, and bolt is in the long-term use, can partially loosen, falls off, destroy, Hidden danger of quality is caused, especially lower section passing vehicle or when train, great security risk will be caused.2. embedding using U rib Section is mended, is welded to connect at the scene.This method manufacturing cost is low, and building site connection is reliable, and safety accident will not occur, but often For the embedding benefit section of rule since inside cannot weld, inside has natural notch, and the local fatigue service life is lower.
Utility model content
The purpose of this utility model is exactly to propose a kind of the embedding of U rib to improve the U rib embedding local fatigue service life for mending section Mend section welding structure.
The utility model is achieved through the following technical solutions.
A kind of embedding benefit section welding structure of U rib, comprising: the first U rib unit;2nd U rib unit;Bottom plate;The first U rib Unit and the 2nd U rib unit along its length on be sequentially welded in the same side of the bottom plate, the first U rib unit There is default spacing between the 2nd U rib unit;
Embedding benefit section, the embedding benefit section be embedded between the first U rib unit and the 2nd U rib unit and respectively with institute State the first U rib unit and the 2nd U rib element solder connection;
The embedding benefit section includes top connecting plate, the first side plate and the second side plate, the top connecting plate, the first side plate and The length of second side plate is adapted with the first U rib unit with the spacing between the 2nd U rib unit, first side Plate and second side plate are end to end with two side plates of the first U rib unit and the 2nd U rib unit respectively, described Top connecting plate and the top plate of the first U rib unit and the 2nd U rib unit are end to end;
Wherein, first side plate and second side plate elder generation and the bottom plate and the first U rib unit, described second After U rib element solder is fixed, then by the top connecting plate be welded in the first U rib unit and the 2nd U rib unit it Between.
Since traditional embedding benefit section is due to being enclosed construction, fillet weld can only be out of outside progress single-sided welding, U rib Side does not have weld seam, there is natural notch together, anti-fatigue performance is poor, and the fillet weld at the other positions of U rib all realizes welding by both sides It connects, fatigue life is high, if embedding benefits section is single welding, is bound to cause U rib embedding benefit section local fatigue service life low short slab.Cause This can respectively be connected two sections of U ribs by the above-mentioned technical proposal of the utility model by the first side plate and the second side plate respectively It picks up and, internal and outer double can be implemented respectively and welded, be open when being equivalent to two side plates of welding, it is possible to from By implementation two-sided welding, and its top due to stress it is smaller, top blind flange weld when can after the completion of two plate-side plate weldings, from Outside weldings are in place.
Based on the above technical solution, the utility model can also have following preferred technical solution.
Preferably, the embedding U-shaped rib for mending the first U rib unit described in Duan Weiyu and the 2nd U rib unit same size, Two side plates and top plate of the U-shaped rib correspond respectively to first side plate, second side plate and the top connecting plate, The top connecting plate and/or the first side plate and/or the second side plate and/or the first U rib unit and/or the 2nd U rib Handle hole is opened up on unit.
Preferably, the handle hole is one or more, can be welded by the handle hole to implementation inside the U-shaped rib Connect or be arranged welding backing.
Preferably, the inside of the U-shaped rib and with the angle seam crossing of the bottom plate and/or with the first U rib unit And/or the seam crossing of the 2nd U rib unit is equipped with welding backing.
Preferably, the welding backing is ceramic backing or steel sleeve.
Preferably, at the abutment joint of the U-shaped rib and the first U rib unit and the 2nd U rib unit, and/or,
The angle seam crossing of the U-shaped rib and the bottom plate opens up welding groove.
Preferably, the handle hole is waist-shaped hole or circular hole or rectangular opening or other shapes of hole.
Preferably, in the inside of the U-shaped rib, reinforcing rib is circumferentially with along the handle hole.
Preferably, in the outside of the U-shaped rib, reinforcing rib is circumferentially with along the handle hole.
Preferably, in the outside of the U-shaped rib, the reinforcement cover board for covering the handle hole, the reinforcement are provided with The shape of cover board is adapted with size with the handle hole.
Preferably, it is used between the embedding benefit section and the first U rib unit, the 2nd U rib unit and the bottom plate Gas shield welding or manual welding connection.
In order to further clearly illustrate, the various aspects and advantage of embodiment disclosed by the utility model will be retouched in following Stating becomes obvious in part, or is recognized by the practice of embodiment disclosed by the utility model.
Detailed description of the invention
Attached drawing is to be used to provide a further understanding of the present invention, and constitute part of specification, and following Specific embodiment be used to explain the utility model together, but do not constitute limitations of the present invention.
Fig. 1 is a kind of solid of embedding the first welded specific embodiment of benefit section of U rib disclosed by the utility model Structural schematic diagram;
Fig. 2 is the cross section structure schematic diagram of the embedding benefit section welding structure specific embodiment of U rib shown in Fig. 1;
Fig. 3 is a kind of solid of welded second of the specific embodiment of embedding benefit section of U rib disclosed by the utility model Structural schematic diagram;
Fig. 4 is a kind of solid of embedding the third welded specific embodiment of benefit section of U rib disclosed by the utility model Structural schematic diagram;
Fig. 5 is a kind of solid of the welded 4th kind of specific embodiment of the embedding benefit section of U rib disclosed by the utility model Structural schematic diagram;
Fig. 6 is a kind of solid of the welded 5th kind of specific embodiment of the embedding benefit section of U rib disclosed by the utility model Structural schematic diagram.
Wherein, piece number indicates in figure are as follows:
1, the first U rib unit, the 2, the 2nd U rib unit, 3, bottom plate, 4, embedding benefit section, 5, welding backing, 7, reinforcing rib, 8, plus Strong cover board, 41, top connecting plate, the 42, first side plate, the 43, second side plate, 44, handle hole.
Specific embodiment
The principles of the present invention and feature are described below in conjunction with attached drawing, example is served only for explaining that this is practical It is novel, it is not intended to limit the scope of the utility model.
Fig. 1 to Fig. 6 is please referred to, Fig. 1 is a kind of the first welded tool of embedding benefit section of U rib disclosed by the utility model The schematic perspective view of body embodiment;Fig. 2 is the cross section structure of the embedding benefit section welding structure specific embodiment of U rib shown in Fig. 1 Schematic diagram;Fig. 3 is a kind of three-dimensional knot of welded second of specific embodiment of embedding benefit section of U rib disclosed by the utility model Structure schematic diagram;Fig. 4 is a kind of solid of embedding the third welded specific embodiment of benefit section of U rib disclosed by the utility model Structural schematic diagram;Fig. 5 is a kind of the vertical of welded 4th kind of specific embodiment of the embedding benefit section of U rib disclosed by the utility model Body structural schematic diagram;Fig. 6 is a kind of welded 5th kind of specific embodiment of the embedding benefit section of U rib disclosed by the utility model Schematic perspective view.In order to show conveniently, the first U rib unit 1 in the attached drawing of part is the structural representation after excision.
Embodiment 1
As depicted in figs. 1 and 2, a kind of embedding 4 welding structure of benefit section of U rib, comprising: the first U rib unit 1;2nd U rib unit 2;Bottom plate 3;The first U rib unit 1 and the 2nd U rib unit 2 along its length on be sequentially welded in the bottom plate 3 The same side has default spacing between the first U rib unit 1 and the 2nd U rib unit 2;
Embedding benefit section 4, the embedding benefit section 4 is embedded between the first U rib unit 1 and the 2nd U rib unit 2 and difference It is welded to connect with the first U rib unit 1 and the 2nd U rib unit 2;
The embedding benefit section 4 include top connecting plate 41, the first side plate 42 and the second side plate 43, the top connecting plate 41, Spacing of the length of first side plate 42 and the second side plate 43 between the first U rib unit 1 and the 2nd U rib unit 2 Be adapted, first side plate 42 and second side plate 43 respectively with the first U rib unit 1 and the 2nd U rib unit 2 Two side plates it is end to end, the top plate of the top connecting plate 41 and the first U rib unit 1 and the 2nd U rib unit 2 It is end to end;
It is fixed as one between first side plate 42 and second side plate 43 and the bottom plate 3 by two-sided welding.
In the present embodiment, as depicted in figs. 1 and 2, which has 3 plates to be spliced, i.e., top connecting plate 41, First side plate 42 and the second side plate 43.It is big according to spacing since the spacing between two U rib units is usually preset It is small, 3 plates are processed in advance, including open up the operations such as groove in advance, first by two side plates head and the tail with two sections of U ribs respectively It after splicing, is stitched in corner connection and the seam crossing between U rib carries out two-sided welding respectively, when the first side plate 42 and the second side plate 43 are equal After welding, need to weld top connecting plate 41, at this time since top stress is smaller, can only each seam crossing into Row outside weldings.
In order to improve welding quality and improve the workpiece strength after welding, in the inside of the first side plate 42 and the second side plate 43 Solder joint at, welding backing 5 can be set.The welding backing 5 is ceramic backing or steel sleeve, preferably ceramic welding lining Pad 5.
It is understood that if after top connecting plate and two side plate interior sides setting welding backings, it can only outside Portion carries out single welding.Handle hole 44 can also be opened up in top connecting plate 41, by the handle hole 44, operator can Soldering appliance is carried out interior welds from the inside that the hole extend into U-shaped rib, welding backing 5 can also be placed from the hole.
Embodiment 2
As shown in figure 3, embedding section 4 of mending is the U-shaped with the first U rib unit 1 and 2 same size of the 2nd U rib unit Rib, top connecting plate 41, the first side plate 42 and the second side plate 43 are three panels for the U-shaped rib respectively, and the top Handle hole 44 is opened up on connecting plate 41 or the first side plate 42 or the second side plate 43, it can also be to open up handle hole on three side plates 44.It uses the U-shaped rib as embedding benefit section 4, first is that operating efficiency can be improved, but can be convenient implementation welding.
The purpose for opening up handle hole 44 is, by the handle hole 44, operator can be protruded into soldering appliance from the hole Interior welds are carried out to the inside of U-shaped rib, welding backing 5 can also be placed from the hole.
The handle hole 44 can be circular hole, square hole, kidney slot or slotted eye etc., and quantity can be set multiple as needed Or one.
In addition, handle hole 44 can also be provided on the first U rib unit 1 or the 2nd U rib unit 2, close to embedding benefit section Position can also be opened in simultaneously in embedding benefit section 4, when site operation, can as needed depending on.
Embodiment 3
As shown in figure 4, on the basis of embodiment 2, in order to improve the intensity around handle hole 44, in the week of handle hole 44 It enclosing, one circle reinforcing rib 7 of setting, the reinforcing rib 7 is set to the outside of top connecting plate 41, is welded to connect, and height can be 5-10mm, Its inside edge is advisable apart from 44 periphery of handle hole for 5-20mm.
Embodiment 4
As shown in figure 5, reinforcing rib 7 is set to the inside of U-shaped rib on the basis of embodiment 2, it is equally set to handle hole 44 Around, height and thickness can be external identical with being set to, i.e., height can be 5-10mm, and inside edge is apart from handle hole 44 Periphery is advisable for 5-20mm.
Embodiment 5
As shown in fig. 6, in the outside of the U-shaped rib, being provided with for covering the operation on the basis of embodiment 2 The reinforcement cover board 8 in hole 44, the shape for reinforcing cover board 8 are adapted with size with the handle hole 44.The stiffening plate and U-shaped rib Connection type be welding or bolt.
In the above embodiments, the embedding benefit section 4 is used with the first U rib unit 1 and the 2nd U rib unit 2 Gas shield welding or manual welding connection.
In conclusion embodiment disclosed in the utility model, which can have, forms embedding benefit in such a way that three blocks of plates splice Section, can also form embedding benefit section with the mode of U-shaped rib, and when with the scheme of U-shaped rib, the side of handle hole is opened up by certain side Formula can realize the embedding two-sided welding for mending section or internal placement welding backing, and then it is full to reach the embedding weld strength for mending section The purpose required enough.
By embodiment disclosed in the utility model, compared with prior art, the embedding benefit section of U rib can be greatly improved 4 fatigue life, realize U rib it is embedding mend 4 butt weld of section reverse side appearance of weld and the embedding 4 fillet weld weld joint on inner side of benefit section of U rib at Shape eliminates the embedding natural notch for mending 4 inside of section of U rib, improves anti-fatigue performance.Meanwhile the embedding benefit section 4 of U rib also greatly reduces Welding difficulty, improve work efficiency, improve the service life of bridge security operation, prevented the security risk of bolt falling.
In the description of the present invention, it should be understood that term " on ", "lower", "front", "rear", "left", "right", The orientation or positional relationship of the instructions such as "vertical", "horizontal", "top", "bottom" "inner", "outside", " circumferential direction " is based on the figure Orientation or positional relationship is merely for convenience of describing the present invention and simplifying the description, rather than the dress of indication or suggestion meaning It sets or element must have a particular orientation, be constructed and operated in a specific orientation, therefore should not be understood as to the utility model Limitation.
In the present invention unless specifically defined or limited otherwise, term " installation ", " connected ", " connection ", " Gu It is fixed " etc. terms shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integral;It can be Mechanical connection, is also possible to be electrically connected;It can be directly connected, two can also be can be indirectly connected through an intermediary The interaction relationship of connection or two elements inside element, unless otherwise restricted clearly.For the common skill of this field For art personnel, the concrete meaning of above-mentioned term in the present invention can be understood as the case may be.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show The description of example " or " some examples " etc. means specific features, structure, material or spy described in conjunction with this embodiment or example Point is contained at least one embodiment or example of the utility model.In the present specification, to the schematic table of above-mentioned term It states and is necessarily directed to identical embodiment or example.Moreover, particular features, structures, materials, or characteristics described can be with It can be combined in any suitable manner in any one or more of the embodiments or examples.In addition, without conflicting with each other, this field Technical staff can by the feature of different embodiments or examples described in this specification and different embodiments or examples into Row combination and combination.
Although the embodiments of the present invention have been shown and described above, it is to be understood that above-described embodiment is Illustratively, it should not be understood as limiting the present invention, those skilled in the art are in the scope of the utility model Inside it can make changes, modifications, alterations, and variations to the above described embodiments.

Claims (10)

1. a kind of embedding benefit section welding structure of U rib, the welding for steel box-girder characterized by comprising
First U rib unit;
2nd U rib unit;
Bottom plate;
The first U rib unit and the 2nd U rib unit along its length on be sequentially welded in the same side of the bottom plate, There is default spacing between the first U rib unit and the 2nd U rib unit;
Embedding benefit section, the embedding benefit section are embedded between the first U rib unit and the 2nd U rib unit and respectively with described One U rib unit and the 2nd U rib element solder connection;
The embedding benefit section includes top connecting plate, the first side plate and the second side plate, the top connecting plate, the first side plate and second The length of side plate is adapted with the first U rib unit with the spacing between the 2nd U rib unit, first side plate and Second side plate is end to end with two side plates of the first U rib unit and the 2nd U rib unit respectively, the top The top plate of connecting plate and the first U rib unit and the 2nd U rib unit is end to end;
Wherein, first side plate and second side plate elder generation and the bottom plate and the first U rib unit, the 2nd U rib After element solder is fixed, then the top connecting plate is welded between the first U rib unit and the 2nd U rib unit.
2. a kind of embedding benefit section welding structure of U rib according to claim 1, which is characterized in that the embedding benefit Duan Weiyu institute The U-shaped rib of the first U rib unit and the 2nd U rib unit same size is stated, two side plates and top plate of the U-shaped rib are right respectively First side plate described in Ying Yu, second side plate and the top connecting plate, the top connecting plate and/or the first side plate and/ Or second open up handle hole on side plate and/or the first U rib unit and/or the 2nd U rib unit.
3. a kind of embedding benefit section welding structure of U rib according to claim 2, which is characterized in that the handle hole is one Or it is multiple, welding backing is welded or is arranged to implementation inside the U-shaped rib by the handle hole.
4. a kind of embedding benefit section welding structure of U rib according to claim 2, which is characterized in that in the inside of the U-shaped rib And it is equipped with the angle seam crossing of the bottom plate and/or with the seam crossing of the first U rib unit and/or the 2nd U rib unit Welding backing.
5. a kind of embedding benefit section welding structure of U rib according to claim 4, which is characterized in that the welding backing is pottery Matter liner or steel sleeve.
6. a kind of embedding benefit section welding structure of U rib according to claim 2, which is characterized in that
At the abutment joint of the U-shaped rib and the first U rib unit and the 2nd U rib unit, and/or,
The angle seam crossing of the U-shaped rib and the bottom plate opens up welding groove.
7. a kind of embedding benefit section welding structure of U rib according to claim 2, which is characterized in that the handle hole is waist type Hole or circular hole or rectangular opening.
8. a kind of embedding benefit section welding structure of U rib according to claim 2, which is characterized in that in the inside of the U-shaped rib And/or it is external, reinforcing rib is circumferentially with along the handle hole.
9. a kind of embedding benefit section welding structure of U rib according to claim 2, which is characterized in that in the outer of the U-shaped rib Portion is provided with the reinforcement cover board for covering the handle hole, the shape and size and the handle hole phase for reinforcing cover board Adaptation.
10. the embedding benefit section welding structure of -9 any a kind of U ribs according to claim 1, which is characterized in that the embedding benefit section It is connect between the first U rib unit, the 2nd U rib unit and the bottom plate using gas shield welding or manual welding.
CN201821056683.2U 2018-07-04 2018-07-04 A kind of embedding benefit section welding structure of U rib Expired - Fee Related CN208496119U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201821056683.2U CN208496119U (en) 2018-07-04 2018-07-04 A kind of embedding benefit section welding structure of U rib

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201821056683.2U CN208496119U (en) 2018-07-04 2018-07-04 A kind of embedding benefit section welding structure of U rib

Publications (1)

Publication Number Publication Date
CN208496119U true CN208496119U (en) 2019-02-15

Family

ID=65283024

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201821056683.2U Expired - Fee Related CN208496119U (en) 2018-07-04 2018-07-04 A kind of embedding benefit section welding structure of U rib

Country Status (1)

Country Link
CN (1) CN208496119U (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108555470A (en) * 2018-07-04 2018-09-21 上海市政工程设计研究总院(集团)有限公司 A kind of embedding benefit section welding structure of U ribs
CN112376445A (en) * 2020-11-23 2021-02-19 同济大学 Steel bridge deck plate U rib butt joint fatigue reinforcing structure and method based on bonding

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108555470A (en) * 2018-07-04 2018-09-21 上海市政工程设计研究总院(集团)有限公司 A kind of embedding benefit section welding structure of U ribs
CN112376445A (en) * 2020-11-23 2021-02-19 同济大学 Steel bridge deck plate U rib butt joint fatigue reinforcing structure and method based on bonding

Similar Documents

Publication Publication Date Title
CN108555470A (en) A kind of embedding benefit section welding structure of U ribs
CN208496119U (en) A kind of embedding benefit section welding structure of U rib
CN106944721B (en) The production method that double H-type section turns box-type section composite steel column
JP2015511567A (en) Crane with at least one crane girder, in particular bridge crane or portal crane
CN208293763U (en) The board-like beam-to-column joint device of outer ring
JP4516976B2 (en) Double skin panel joint
CN106224542A (en) The integral multi-layered binding vessel of mesohigh refractory metal
CN107717188B (en) Muscle double computer cooperation automatic soldering method in a kind of rail vehicle curb girder
EP3812233A1 (en) Method for manufacturing a railcar body
CN209491475U (en) A kind of steel construction people's air defense door skin welding equipment
CN206459241U (en) A kind of range hood
KR101446447B1 (en) Method for manufacturing vehicle frame
JPS60213595A (en) Method of manufacturing ship bottom hopper section
CN112726958B (en) Manufacturing process of round tube and taper tube combined inclined column
CN112372172B (en) Setting method of full-welded steel truss chord member block
CN207749699U (en) Superimposed sheet splicing seams construction based on reinforcement bolt connection
CN214656272U (en) Be used for narrow and small space truss bridge member of complicated structure
JP5932567B2 (en) Steel structure manufacturing method
CN207104074U (en) Argon-arc welding gun glasses and argon-arc welding gun
CN217452657U (en) Metal plate surface welding connecting key and surface welding structure
CN108506296A (en) One kind being based on cross section material framework joining method
CN216541579U (en) Full-length welding mechanism for processing I-shaped steel structure
CN204236467U (en) For the funnel spinal branches support structure of hopper car
CN208068114U (en) A kind of grillage assembly support
TWI521125B (en) Methods of making steel bones

Legal Events

Date Code Title Description
GR01 Patent grant
GR01 Patent grant
CF01 Termination of patent right due to non-payment of annual fee
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20190215

Termination date: 20200704