CN107838710A - Outer-hexagonal bolt maintenance clamping tool - Google Patents

Outer-hexagonal bolt maintenance clamping tool Download PDF

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Publication number
CN107838710A
CN107838710A CN201711019979.7A CN201711019979A CN107838710A CN 107838710 A CN107838710 A CN 107838710A CN 201711019979 A CN201711019979 A CN 201711019979A CN 107838710 A CN107838710 A CN 107838710A
Authority
CN
China
Prior art keywords
block
movable block
angle
fixed
fixed plate
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.)
Withdrawn
Application number
CN201711019979.7A
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Chinese (zh)
Inventor
吴光武
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.)
Chengdu Hengtong Zhaoye Precision Machinery Co Ltd
Original Assignee
Chengdu Hengtong Zhaoye Precision Machinery 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 Chengdu Hengtong Zhaoye Precision Machinery Co Ltd filed Critical Chengdu Hengtong Zhaoye Precision Machinery Co Ltd
Priority to CN201711019979.7A priority Critical patent/CN107838710A/en
Publication of CN107838710A publication Critical patent/CN107838710A/en
Withdrawn legal-status Critical Current

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23QDETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
    • B23Q3/00Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine
    • B23Q3/02Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine for mounting on a work-table, tool-slide, or analogous part
    • B23Q3/06Work-clamping means
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B25HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25BTOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
    • B25B11/00Work holders not covered by any preceding group in the subclass, e.g. magnetic work holders, vacuum work holders

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Gripping Jigs, Holding Jigs, And Positioning Jigs (AREA)

Abstract

The invention discloses outer-hexagonal bolt maintenance clamping tool, including fixed plate, movable block and drive device, one end of fixed plate upper surface is provided with fixed block, the movable block is located at one end away from fixed block on fixed plate upper surface, the drive device is connected with movable block, and drive movable block close to or away from fixed block;Close to a be projected as broken line of the face of movable block in fixed plate upper surface on the fixed block, the angle α opening that the broken line is formed is towards movable block, and angle α is 120 °;Close to a be projected as broken line of the face of fixed block in fixed plate upper surface on the movable block, the angle β openings that the broken line is formed are towards fixed block, and angle β is 120 °.By this maintenance tool come the fixing bolt when repairing bolt, labor strength is not only reduced, moreover it is possible to enough fixed forces are provided, so that worker can smoothly complete the maintenance activity of bolt.

Description

Outer-hexagonal bolt maintenance clamping tool
Technical field
The present invention relates to a kind of clamping tool, and in particular to outer-hexagonal bolt maintenance clamping tool.
Background technology
Bolt is a kind of machine components, the cylindrical threaded fastener of adapted nut.Bolt is by head and screw rod two A kind of fastener of part composition, need to coordinate with nut, for being fastenedly connected two parts for carrying through hole.This type of attachment Claim bolt connection.Due to nut is screwed off from bolt, it can separate the two parts again, therefore bolt connection is to belong to removable Unload connection.
Bolt divides A, B, C tri- kinds.First two is burnished bolt, less use.Bolt generally, refer both to C level plain bolts. In some interim connections that connects and need to dismantle, C level plain bolts are commonly used.The conventional plain bolt of building structure have M16, M20、M24.Some mechanical industry rough bolt diameters may be bigger, and purposes is special.
Bolt has turret head, round end, square spigot, countersunk head etc..General countersunk head surface after connection is required The smooth place for not having projection, because countersunk head may be screwed in part.Round end can also be screwed into part.The screwing force of square toes can be with It is big, but size is very big.In addition to meeting the needs locked after installation, there is head porose, bar portion is porose, this some holes It is unlikely when bolt can be made vibrated to release.The polished rod that some bolts do not have screw thread will run business into particular one, and be eel-like figure bolt, and this bolt is favourable It is coupled in by variable force.There is special high-strength bolt on steel construction, head can be done bigger, and size also changes.There is spy in addition Different use:T-slot bolt is used, and most on jig, shape is special, and head on both sides will be cut away.Foundation bolt, it is used for What machine and ground were connected, there are a variety of shapes, enter U bolt etc..The also special stud of welding, one has screw thread One does not have, and can be welded on part, the direct nutting in another side.
Hexagon-headed bolt is the most frequently used, and also referred to as outer-hexagonal bolt, its head are positive six prismsby shape.In the transport of bolt In movement, the screw thread away from head can cause thread to deform because of reasons such as generating collisions on bolt shank.Due to bar portion end spiral shell Tooth is damaged, and when in use, nut can not be set on the bolt of this bar portion end thread deformation, or this bolt can not Coordinate with screwed hole.Therefore usually need to repair this bar portion end impaired bolt of thread, with cutters such as planing tools The impaired thread in bolt shank end is eliminated, allows nut or screwed hole directly to coordinate with not impaired screw thread, to enter Row connection.
But when eliminating the impaired thread in bolt shank end, generally use the head of hand fixing bolt, this operation Mode not only increases labor strength, and hold dynamics it is inadequate when, the power that bolt can be eliminated is taken away, so that it cannot suitable Profit completes the maintenance activity of bolt.
The content of the invention
Present invention aims at outer-hexagonal bolt maintenance clamping tool is provided, solve to be damaged eliminating bolt shank end During bad thread, generally use the head of hand fixing bolt, this not only adds labor strength, and hold dynamics it is inadequate when, The power that bolt can be eliminated is taken away, so that it cannot the problem of smoothly completing the maintenance activity of bolt.
The present invention is achieved through the following technical solutions:
Outer-hexagonal bolt maintenance clamping tool, including fixed plate, movable block and drive device, in fixed plate upper surface One end is provided with fixed block, and the movable block is located at one end away from fixed block on fixed plate upper surface, the drive device with Movable block connects, and drive movable block close to or away from fixed block;
Face on the fixed block close to movable block is projected as a broken line in fixed plate upper surface, and the broken line is formed Angle α opening towards movable block, and angle α is 120 °;
Face on the movable block close to fixed block is projected as a broken line in fixed plate upper surface, and the broken line is formed Angle β openings towards fixed block, and angle β is 120 °;
It is upper positioned at the side of the line side and angle β on angle α by the wedge angle of angle α and angle β wedge angle line It is parallel in the side of this line opposite side, mobile movable block, angle α and angle β a pair with same regular hexagon respectively can be made Relative angle overlaps.It is to match the head of hexagon-headed bolt that angle α and angle β are arranged into 120 °.
The hex bolts for the thread that needs repairing is placed in fixed plate, screw rod vertical fixing plate, bolt head and fixation Plate contacts, and the prism side of bolt head is contacted with the face on fixed block close to movable block, and makes angle α and bolt prism On an angle overlap, then start drive device, movable block is moved closer to fixed block, until bolt is by movable block and solid Determine block to fix, then eliminated the impaired screw thread in screw rod end with planing instrument.By the present invention come when repairing bolt Fixing bolt, not only reduce labor strength, moreover it is possible to enough fixed forces are provided, so that worker can smoothly complete bolt Maintenance activity.
Further, in addition to controller, pressure sensor is provided with the face of movable block on fixed block, it is described Controller respectively with pressure sensor and the motor connection of drive device;
The pressure information that the pressure sensor is sensed is sent to controller;The controller, which receives, comes from pressure The pressure signal of force snesor, and control the electric machine operation state of drive device.
Controller uses the 8XC151SA of single-chip microcomputer, preferably Intel, the preferred HM91 of pressure sensor model.
During clamping bolt, with the work of drive device, movable block main part is close to fixed block, when close mobile on fixed block When pressure is enough to make the bolt fixed on the face of block, controller suspends the work of drive device, when avoiding clamping power excessive Damage the head of bolt.
Further, the drive device includes the screw rod and motor being sequentially connected, and is set on the upper surface of fixed plate Have a chute, the extension axis of the chute parallel to movable block motion track, and one end on chute away from fixed block with it is outer Boundary connects, and is closed on chute close to one end of fixed block;
One end close to fixed plate on movable block is provided with drive block, and the drive block is located in chute, the screw rod In chute, the blind end of one end of screw rod and chute is rotatablely connected, the other end of screw rod with after drive block with motor Connection, the electric motor driven screw rotate, and drive drive block and movable block close to or away from fixed block.
Further, guide groove is provided with the upper surface of fixed plate, the extension axis of the guide groove is parallel to shifting The motion track of motion block, one end close to fixed plate on movable block are provided with guide pad, and the guide pad is located in guide groove, And guide pad can move along the extension axis of guide groove.
Further, the opening size of the guide groove is less than bottom land size, and the cross sectional dimensions and guiding of guide pad The cross sectional dimensions of groove is consistent.
Further, it is provided with elastic rubber layer on the face relative to each other of fixed block and movable block.Due to bolt Head is upset or directly pours to be formed, and its surface roughness is larger, and the setting of elastic rubber layer can not only protect fixation The face relative to each other of block and movable block, also plays a protective role to the head of bolt.
Controller and pressure sensor in above-mentioned are prior art, can commercially be bought.
The present invention compared with prior art, has the following advantages and advantages:
1st, outer-hexagonal bolt maintenance clamping tool of the present invention, it would be desirable to which the hex bolts for repairing thread is placed on fixed plate On, screw rod vertical fixing plate, bolt head contacts with fixed plate, and the prism side of bolt head is moved with close on fixed block The face contact of motion block, and overlaps an angle on angle α and bolt prism, then starts drive device, make movable block by Gradually close to fixed block, until bolt is fixed by movable block and fixed block, it is then with planing instrument that screw rod end is impaired Screw thread eliminates;By the present invention come the fixing bolt when repairing bolt, labor strength is not only reduced, moreover it is possible to provide enough Fixed force so that worker can smoothly complete the maintenance activity of bolt;
2nd, outer-hexagonal bolt maintenance clamping tool of the present invention, during clamping bolt, with the work of drive device, movable block Main part is close to fixed block, and when pressure is enough to be fixed bolt on the face of movable block on fixed block, controller is temporary Stop the work of drive device, the head of bolt is damaged when avoiding clamping power excessive;
3rd, outer-hexagonal bolt maintenance clamping tool of the present invention, because the head of bolt is upset or directly pour and to be formed , its surface roughness is larger, and the setting of elastic rubber layer can not only protect the face relative to each other of fixed block and movable block, also right The head of bolt plays a protective role.
Brief description of the drawings
Accompanying drawing described herein is used for providing further understanding the embodiment of the present invention, forms one of the application Point, do not form the restriction to the embodiment of the present invention.In the accompanying drawings:
Fig. 1 is the structural representation of the present invention;
Fig. 2 is the top view of the present invention;
Fig. 3 is position view of the movable block close to fixed block.
Mark and corresponding parts title in accompanying drawing:
1- fixed plates, 2- fixed blocks, 3- movable blocks, 4- pressure sensors, 5- screw rods, 6- chutes, 7- drive blocks, 8- are oriented to Groove, 9- guide pads.
Embodiment
For the object, technical solutions and advantages of the present invention are more clearly understood, with reference to embodiment and accompanying drawing, to this Invention is described in further detail, and exemplary embodiment of the invention and its explanation are only used for explaining the present invention, do not make For limitation of the invention.
Embodiment 1
As shown in Figure 1-Figure 3, outer-hexagonal bolt maintenance clamping tool of the present invention, including fixed plate 1, movable block 3 and drive Dynamic device, fixed block 2 is provided with one end of the upper surface of fixed plate 1, the movable block 3 is located at remote on the upper surface of fixed plate 1 One end of fixed block 2, the drive device are connected with movable block 2, and drive movable block 2 close to or away from fixed block 2;
Face on the fixed block 2 close to movable block 3 is projected as a broken line, the broken line in the upper surface of fixed plate 1 The angle α opening of formation is towards movable block 3, and angle α is 120 °;
Face on the movable block 3 close to fixed block 2 is projected as a broken line, the broken line in the upper surface of fixed plate 1 The angle β openings of formation are towards fixed block 2, and angle β is 120 °;
It is upper positioned at the side of the line side and angle β on angle α by the wedge angle of angle α and angle β wedge angle line Parallel in the side of this line opposite side, angle α and angle β overlap with a pair of relative angles of same regular hexagon respectively.
The hex bolts for the thread that needs repairing is placed in fixed plate 1, screw rod vertical fixing plate 1, bolt head is with consolidating Fixed board 1 contacts, and the prism side of bolt head is contacted with the face on fixed block 2 close to movable block 3, and makes angle α and spiral shell An angle on bolt prism overlaps, and then starts drive device, movable block 3 is moved closer to fixed block 2, until bolt is moved Motion block 3 and fixed block 2 are fixed, and are then eliminated the impaired screw thread in screw rod end with planing instrument.By the present invention come Fixing bolt when repairing bolt, not only reduces labor strength, moreover it is possible to enough fixed forces are provided, so that worker can be smooth Complete the maintenance activity of bolt.
Embodiment 2
The present invention is on the basis of embodiment 1, and the present invention is further illustrated.
As shown in Figure 1-Figure 3, outer-hexagonal bolt maintenance clamping tool of the present invention, in addition to controller, on fixed block 2 Be provided with pressure sensor 4 on the face of movable block 3, the controller respectively with pressure sensor 4 and the electricity of drive device Machine connects;
The pressure information that the pressure sensor 4 is sensed is sent to controller;The controller, which receives, to be come from The pressure signal of pressure sensor 4, and control the electric machine operation state of drive device.
During clamping bolt, with the work of drive device, the main part of movable block 3 is close to fixed block 2, when close on fixed block 2 When pressure is enough to make the bolt fixed on the face of movable block 3, controller suspends the work of drive device, avoids clamping power mistake The head of bolt is damaged when big.
Embodiment 3
The present invention is on the basis of embodiment 1, and the present invention is further illustrated.
As shown in Figure 1-Figure 3, outer-hexagonal bolt maintenance clamping tool of the present invention, the drive device include being sequentially connected Screw rod 5 and motor, chute 6 is provided with the upper surface of fixed plate 1, the extension axis of the chute 6 is parallel to movable block 3 Motion track, and be in communication with the outside away from one end of fixed block 2 on chute 6, closed on chute 6 close to one end of fixed block 2;
One end close to fixed plate 1 on movable block 3 is provided with drive block 7, and the drive block 7 is located in chute 6, described Screw rod 5 is located in chute 6, and one end of screw rod 5 is rotatablely connected with the blind end of chute 6, and the other end of screw rod 5 is with running through drive block Rotated after 7 with motor connection, the electric motor driven screw 5, and drive drive block 7 and movable block 3 close or remote fixed Block 2.
Embodiment 4
The present invention is on the basis of embodiment 1, and the present invention is further illustrated.
As shown in Figure 1-Figure 3, outer-hexagonal bolt maintenance clamping tool of the present invention, is set on the upper surface of fixed plate 1 There is guide groove 8, the extension axis of the guide groove 8 is parallel to the motion track of movable block 3, the close fixed plate 1 on movable block 3 One end be provided with guide pad 9, the guide pad 9 is located in guide groove 8, and guide pad 9 can along guide groove 8 extension axis move It is dynamic.
Further, the opening size of the guide groove 8 is less than bottom land size, and the cross sectional dimensions of guide pad 9 is with leading It is consistent to the cross sectional dimensions of groove 8.
Embodiment 5
The present invention is on the basis of embodiment 1, and the present invention is further illustrated.
As shown in Figure 1-Figure 3, outer-hexagonal bolt maintenance clamping tool of the present invention, in fixed block 2 and movable block 3 each other Elastic rubber layer is provided with opposite face.Because the head of bolt is upset or directly pours and to be formed, its rough surface Spend larger, the setting of elastic rubber layer can not only protect the face relative to each other of fixed block 2 and movable block 3, the also head to bolt Play a protective role.
Above-described embodiment, the purpose of the present invention, technical scheme and beneficial effect are carried out further Describe in detail, should be understood that the embodiment that the foregoing is only the present invention, be not intended to limit the present invention Protection domain, within the spirit and principles of the invention, any modification, equivalent substitution and improvements done etc., all should include Within protection scope of the present invention.

Claims (6)

1. outer-hexagonal bolt maintenance clamping tool, it is characterised in that:Including fixed plate (1), movable block (3) and drive device, Fixed block (2) is provided with one end of fixed plate (1) upper surface, the movable block (3) is located at remote on fixed plate (1) upper surface One end of fixed block (2), the drive device are connected with movable block (2), and drive movable block (2) close to or away from fixed block (2);
Face on the fixed block (2) close to movable block (3) is projected as a broken line, the folding in fixed plate (1) upper surface The angle α opening that line is formed is towards movable block (3), and angle α is 120 °;
Face on the movable block (3) close to fixed block (2) is projected as a broken line, the folding in fixed plate (1) upper surface The angle β openings that line is formed are towards fixed block (2), and angle β is 120 °;
By the wedge angle of angle α and angle β wedge angle line, positioned at the side of the line side with being located at this on angle β on angle α The side of line opposite side is parallel, mobile movable block (3), can make a pair of the phases of angle α and angle β respectively with same regular hexagon It is diagonal to overlap.
2. outer-hexagonal bolt maintenance clamping tool according to claim 1, it is characterised in that:Also include controller, Be provided with pressure sensor (4) on the face of movable block (3) on fixed block (2), the controller respectively with pressure sensor (4) and drive device motor connection;
The pressure information that the pressure sensor (4) is sensed is sent to controller;The controller, which receives, comes from pressure The pressure signal of force snesor (4), and control the electric machine operation state of drive device.
3. outer-hexagonal bolt maintenance clamping tool according to claim 1, it is characterised in that:The drive device includes The screw rod (5) and motor being sequentially connected, chute (6), the extension of the chute (6) are provided with the upper surface of fixed plate (1) Diameter parallel is in the motion track of movable block (3), and one end away from fixed block (2) is in communication with the outside on chute (6), chute (6) closed on close to one end of fixed block (2);
One end close to fixed plate (1) on movable block (3) is provided with drive block (7), and the drive block (7) is located at chute (6) In, the screw rod (5) is located in chute (6), and one end of screw rod (5) is rotatablely connected with the blind end of chute (6), screw rod (5) The other end with being rotated afterwards with motor connection, the electric motor driven screw (5) through drive block (7), and drive drive block (7) and Movable block (3) is close or away from fixed block (2).
4. outer-hexagonal bolt maintenance clamping tool according to claim 1, it is characterised in that:In the upper of fixed plate (1) Be provided with guide groove (8) on surface, the extension axis of the guide groove (8) parallel to movable block (3) motion track, in movement One end on block (3) close to fixed plate (1) is provided with guide pad (9), and the guide pad (9) is located in guide groove (8), and is oriented to Block (9) can move along the extension axis of guide groove (8).
5. outer-hexagonal bolt maintenance clamping tool according to claim 4, it is characterised in that:The guide groove (8) Opening size is less than bottom land size, and the cross sectional dimensions of guide pad (9) is consistent with the cross sectional dimensions of guide groove (8).
6. outer-hexagonal bolt maintenance clamping tool according to claim 1, it is characterised in that:In fixed block (2) and move Elastic rubber layer is provided with the face relative to each other of motion block (3).
CN201711019979.7A 2017-10-27 2017-10-27 Outer-hexagonal bolt maintenance clamping tool Withdrawn CN107838710A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201711019979.7A CN107838710A (en) 2017-10-27 2017-10-27 Outer-hexagonal bolt maintenance clamping tool

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201711019979.7A CN107838710A (en) 2017-10-27 2017-10-27 Outer-hexagonal bolt maintenance clamping tool

Publications (1)

Publication Number Publication Date
CN107838710A true CN107838710A (en) 2018-03-27

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Application Number Title Priority Date Filing Date
CN201711019979.7A Withdrawn CN107838710A (en) 2017-10-27 2017-10-27 Outer-hexagonal bolt maintenance clamping tool

Country Status (1)

Country Link
CN (1) CN107838710A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110450079A (en) * 2019-09-12 2019-11-15 广东工业大学 A kind of fastening clips device
CN110900215A (en) * 2019-11-04 2020-03-24 嘉善亚飞复合轴承有限公司 Large-scale chamfering machine
CN111890247A (en) * 2020-07-01 2020-11-06 浙江哈特惠科技股份有限公司 High-strength anti-falling bolt processing equipment special for high-speed rail and processing method thereof

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN204075797U (en) * 2014-08-21 2015-01-07 赣州福鑫财实业有限公司 Adjustable nut fixture
CN104400048A (en) * 2014-12-03 2015-03-11 常州市荣鑫车辆配件厂 Novel three-jaw chuck
CN104493570A (en) * 2014-12-25 2015-04-08 重庆慧团商贸有限公司 Clamping device for milling
CN204913655U (en) * 2015-09-03 2015-12-30 衢州启程机械设备有限公司 Take flat -nose pliers that self -alignment formula kept silent
CN205685044U (en) * 2016-04-30 2016-11-16 北京仁通永盛机械设备有限公司 Jig and lathe
CN206263618U (en) * 2016-12-08 2017-06-20 金堂县晶智机械加工有限公司 A kind of new type auto fixture

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN204075797U (en) * 2014-08-21 2015-01-07 赣州福鑫财实业有限公司 Adjustable nut fixture
CN104400048A (en) * 2014-12-03 2015-03-11 常州市荣鑫车辆配件厂 Novel three-jaw chuck
CN104493570A (en) * 2014-12-25 2015-04-08 重庆慧团商贸有限公司 Clamping device for milling
CN204913655U (en) * 2015-09-03 2015-12-30 衢州启程机械设备有限公司 Take flat -nose pliers that self -alignment formula kept silent
CN205685044U (en) * 2016-04-30 2016-11-16 北京仁通永盛机械设备有限公司 Jig and lathe
CN206263618U (en) * 2016-12-08 2017-06-20 金堂县晶智机械加工有限公司 A kind of new type auto fixture

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110450079A (en) * 2019-09-12 2019-11-15 广东工业大学 A kind of fastening clips device
CN110900215A (en) * 2019-11-04 2020-03-24 嘉善亚飞复合轴承有限公司 Large-scale chamfering machine
CN111890247A (en) * 2020-07-01 2020-11-06 浙江哈特惠科技股份有限公司 High-strength anti-falling bolt processing equipment special for high-speed rail and processing method thereof

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Application publication date: 20180327