CN205168696U - All -round automatic welding seam appearance drive arrangement that detects a flaw - Google Patents
All -round automatic welding seam appearance drive arrangement that detects a flaw Download PDFInfo
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- CN205168696U CN205168696U CN201521034159.1U CN201521034159U CN205168696U CN 205168696 U CN205168696 U CN 205168696U CN 201521034159 U CN201521034159 U CN 201521034159U CN 205168696 U CN205168696 U CN 205168696U
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- motor
- ball pivot
- shell
- weld seam
- actuating device
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Abstract
The utility model relates to an all -round automatic welding seam appearance drive arrangement that detects a flaw, including running gear, three -dimensional alignment jig, rotation driving device and all -round adaptation device, set up on running gear three -dimensional alignment jig, set up on three -dimensional alignment jig rotation driving device, rotation driving device is connected with all -round adaptation device. The utility model discloses all -round automatic welding seam appearance drive arrangement that detects a flaw has changed the operation mode that the welding seam flaw detection is carried out in traditional manual work, has replaced the manual work to detect a flaw, has realized the automation of flaw detection, simultaneously the utility model discloses utilize complete newly -designed all -round adaptation device and can be by the test surface unevenness or when having the circumstances such as slight angle with the help of three -dimensional alignment jig, automatic adjustment probe position makes the probe tangent with the welding seam all the time, has improved precision and efficiency that the welding seam was detected a flaw.
Description
Technical field
The utility model relates to a kind of comprehensive automatic weld seam fault finder actuating device, belongs to weld seam non-destructive flaw detection detection technique field.
Background technology
Ultrasonic flaw detection has good directionality, intensity is high and penetrating capacity strong, and to advantages such as human body fanout free region, becomes one of main method detecting internal defect in the equipment Manufacture Process such as pressure container, shipbuilding, boiler.Present ultrasonic flaw detection mainly completes by manual operation, comprise weld cleaning, brush couplant, detect defect, defective locations and shape determine, need multi-user collaborative operation.Long-time single gesture operation is easily tired, and there is inefficiency, labour intensity is large, precision comparison is low and the shortcoming such as undetected.Some flaw detection auxiliary mechanisies existing, although can be to a certain extent weld seam especially to some large welded structures parts as the flaw detection of hydraulic support, because its bead shape is irregular, so there is great difficulty in the realization that machinery is detected a flaw.
Chinese patent literature CN204758540U discloses the ultrasonic Rapid non-destructive testing device of a kind of sheet lap bead weld, this device comprises two probes, fault finder, arithmetical device, the super sonic that left side probe is launched is through launching, propagate, run into weld seam left side wall to return, by in the whole process of left side probe wafer receipt, the distance (i.e. sound path) of ultrasonic propagation is S1, right side sound path is S2, the sound wave that probe is launched runs into nearest weld seam wall, then reflect and received by former probe, the distance S that now sound wave is propagated be probe launch wafer apart from weld seam nearly span from twice, weld width W=L+2L0-(S1+S2)/2, L0 is the forward position length of probe, two probes can slide along weld seam, adopt arithmetical device can obtain testing result rapidly after probe scanning process completes.Although this device can melt wide detection by butt welded seam, overlapping weld quality can be detected, particularly the wide non-destructive ultrasonic detection technique measured is melted to bead weld, quick ultrasound detection can be carried out to sheet lap laser welded seam, realize the quality assessment of sheet lap laser welded seam, find the defect in weld seam in advance, ensure product design.But this device is the detection based on the more regular basis of weld seam is carried out, this device is the molten wide detection carried out for weld seam simultaneously, can directly reject the molten substandard weld seam of wide size, this device the surface of butt welded seam can not carry out carrying out flaw detection, this device is when in the face of fitfull weld seam simultaneously, its testing result is also unreliable, and the accuracy of detection is low, cannot meet the actual demand of weld seam detection.
Tremendous influence is had for weld seam existing defects butt welded seam quality, butt welded seam carries out carrying out flaw detection, especially carry out carrying out flaw detection for the weld seam of some irregularities and then seem most important, therefore, need a kind of omnibearing automatic weld seam fault finder actuating device of R & D design badly, to make seam inspection Detection results better, testing result is more accurate.
Utility model content
For the deficiencies in the prior art, the utility model provides a kind of comprehensive automatic weld seam fault finder actuating device.
The technical solution of the utility model is as follows:
A kind of comprehensive automatic weld seam fault finder actuating device, comprise traveling gear, three-dimensional adjustable shelf, rotating driving device and comprehensive adaptive device, traveling gear arranges described three-dimensional adjustable shelf, three-dimensional adjustable shelf arranges described rotating driving device, and rotating driving device is connected with comprehensive adaptive device.The utility model seam inspection instrument actuating device can install required detector device on comprehensive adaptive device, by the flexible by three-dimensional adjustable shelf and comprehensive adaptive device, in three dimensional space, mobile probe and the weld seam of making is near carrying out ultrasonic flaw detection, in flaw detection process, the low-angle of comprehensive adaptive device is utilized to regulate, make probe all the time in the position tangent with weld seam, can effectively detect weld seam unfairness or have the situations such as slight angle, improve the precision of detection.
Preferably, described traveling gear comprises car body, arranges wheel in the both sides of car body, and the bottom of car body is provided with motor, and the output shaft of motor is connected with wheel drive.
Preferably, described motor is stepping motor.The benefit of this design is, the output shaft of stepping motor is connected with the transmission shaft of wheel by coupler, and then drives wheel walking, and stepping motor can accurately be located and speed governing, can meet this job requirements accurately of seam inspection.
Preferably, arrange the first slide rail, the first contiguous block and the first motor at the top of car body, the first motor is arranged on the first slide rail side and drives the first contiguous block parallel motion in the first slide rail by transport tape.
Preferably, described three-dimensional adjustable shelf comprises the second slide rail, the second contiguous block, the second motor and telescopic oil cylinder, the bottom of the second slide rail is fixedly connected with the first contiguous block, second motor is arranged on the second slide rail side and drives the second contiguous block to move up and down in the second slide rail by transport tape, and one end of telescopic oil cylinder is fixedly connected with the second contiguous block.
Preferably, described rotating driving device comprises Connection Card, the first rotating machine and motor carrying shell, one end of Connection Card is fixedly connected with one end of telescopic oil cylinder piston rod, first rotating machine is arranged on the other end of Connection Card and is connected with transmission of rotary axis, and S. A. and motor carry shell and be fixedly connected with.The benefit of this design is, first rotating machine is connected with transmission of rotary axis, and S. A. and motor carry shell and be fixedly connected with, and during the first rotating machine work, S. A. is rotated, when S. A. rotates, drive motor carrying shell also correspondingly rotates, and then makes comprehensive adaptive device and correspondingly adjusting.
Preferably, described comprehensive adaptive device comprises the second rotating machine, ball pivot axle shell, holddown spring, ball pivot axle and ball pivot shell, the top of ball pivot axle shell and the output shaft of the second rotating machine is in transmission connection, bottom is provided with spherosome, spherosome comprises a spherical hollow space, holddown spring is placed in spherical hollow space and one end is connected with ball pivot axle shell, the other end is connected with ball pivot axle, ball pivot axle is placed in ball pivot shell, ball pivot shell is connected with ball pivot axle shell, and the second rotating machine is installed in motor carrying shell.
Preferably, described spherosome offers three gap, three gap communicate with spherical hollow space.The benefit of this design is, three gap that spherosome is offered, spherosome is become have the structure of three-jaw, three-jaw structure place materials'use comparatively softwood matter, when not stressing, axle and ball twist axle shell and block mutually, and ball strand axle withstands on shell lower surface, when ball strand axle is stressed, ball strand axle shell got into by ball due to axle place, and three-jaw structure struts firmly grasps axle after the ball of mandrel head enters ball strand axle shell.
Preferably, described seam inspection instrument actuating device also comprises super sonic angle probe, and described super sonic angle probe is fixedly connected with one end of ball pivot axle.
During use, the use procedure of this comprehensive automatic weld seam fault finder actuating device is as follows:
When needs carry out heads for crank detection of ultrasonic bonding lines, starting traveling gear makes super sonic angle probe near being detected face, then the piston rod of telescopic oil cylinder stretches out and super sonic angle probe and weld seam is fitted, the motion of telescopic oil cylinder makes super sonic angle probe contact with the face of being detected and stressed, thus power is passed to ball strand axle, ball is twisted axle shell and struts by ball pivot axle, ball pivot axle press-in ball strand axle shell, and locking mutually, make ball twist axle and on super sonic angle probe twist together with axle shell with ball and move, start the first motor and the second motor, by the parallel motion of the first contiguous block and moving up and down of the second contiguous block, super sonic angle probe progressively detects being detected face, detection terminates rear telescopic oil cylinder retraction, thus super sonic angle probe is separated with the face of being detected, and is resetted by the holddown spring compressed, and ball is twisted axle and eject ball strand axle shell, ball pivot axle is returned to initial position.
The beneficial effects of the utility model are:
The comprehensive automatic weld seam fault finder actuating device of the utility model changes the work pattern that Traditional Man carries out seam inspection detection, instead of artificial flaw detection, achieve the automation of carrying out flaw detection, simultaneously the utility model utilize the comprehensive adaptive device of brand-new design and by three-dimensional adjustable shelf can being detected face unfairness, have slight angle or the situation such as bead shape is irregular time, comprehensive adjustment probe positions can be realized, make probe tangent with weld seam all the time, improve precision and the efficiency of seam inspection.Obviously, Be very effective, is worthy of popularization in its effect.
Accompanying drawing explanation
Fig. 1 is the block diagram of the utility model seam inspection instrument actuating device;
Fig. 2 is the block diagram of traveling gear in the utility model;
Fig. 3 is the face upwarding stereogram of traveling gear in the utility model;
Fig. 4 is the structural representation of three-dimensional trim holder in the utility model;
Fig. 5 is the structural representation of telescopic oil cylinder in the utility model;
Fig. 6 is the structural representation of rotating driving device in the utility model;
Fig. 7 a is the block diagram of comprehensive adaptive device in the utility model;
Fig. 7 b is the front view of comprehensive adaptive device in the utility model;
Fig. 7 c is the cutaway view in A-A direction in Fig. 7 b;
Fig. 7 d is the right elevation of comprehensive adaptive device in the utility model;
Fig. 7 e is the cutaway view in B-B direction in Fig. 7 d;
Fig. 8 a is the front view with the comprehensive adaptive device of ball pivot shell in the utility model;
Fig. 8 b is the cutaway view in C-C direction in Fig. 8 a;
Wherein: 1, traveling gear; 2, three-dimensional adjustable shelf; 3, telescopic oil cylinder; 4, rotating driving device; 5, comprehensive adaptive device; 6, car body; 7, the first contiguous block; 8, the first motor; 9, the first slide rail; 10, wheel; 11, stepping motor; 12, wheel; 13, the second motor; 14, the second contiguous block; 15, Connection Block; 16, cylinder barrel; 17, front end cover; 18, piston rod; 19, Connection Card; 20, the first rotating machine; 21, the second rotating machine; 22, motor carrying shell; 23, ball pivot axle shell; 24, holddown spring; 25, ball pivot axle; 26, angle probe; 27, ball pivot shell.
Detailed description of the invention
Also by reference to the accompanying drawings the utility model is described further below by embodiment, but is not limited thereto.
Embodiment 1:
As shown in Fig. 1 to Fig. 8 b, the present embodiment provides a kind of comprehensive automatic weld seam fault finder actuating device, comprise traveling gear 1, three-dimensional adjustable shelf 2, rotating driving device 4 and comprehensive adaptive device 5, traveling gear 1 is installed described three-dimensional adjustable shelf 2, three-dimensional adjustable shelf 2 arranges described rotating driving device 4, and rotating driving device 4 is connected with comprehensive adaptive device 5.
Wherein, traveling gear 1 comprises car body 6, four wheels 10,12 are installed with in the both sides of car body 6, the symmetrical both sides being arranged on car body before and after four wheels, two stepping motors 11 are fixedly mounted in the bottom of car body 6, two stepping motors are diagonally arranged, and two stepping motors are connected with one in front and one in back two wheel drives respectively.Wherein, wheel 12 is connected with stepping motor 11 by existing structures such as coupler, axle, bearing, axle sleeves, and is threaded and is fixed on car body 6, and wheel 10 is threaded by existing structures such as axle, bearing, axle sleeves and is fixed on car body 6.
The first slide rail 9, first contiguous block 7 and the first motor 8 is provided with at the top of car body 6, first motor 8 adopts stepping motor, first motor 8 is arranged on the first slide rail 9 side and by belt drive first contiguous block 7 parallel motion in the first slide rail 9, the upper surface of the first contiguous block 7 is a plane, and be provided with threaded mounting hole, can be connected with Connection Block 15 bolt of the second slide rail bottom.The lower plane of the first contiguous block is fixed on belt by the fixation hole configurations on four groups of bolts and belt, and this is bolted in two sulculuses of slide rail other end, belt rail structure is used to save space, direction along ng a path is made to horizontally slip apart from increasing, and belt slide rail is driven by stepping motor and is easy to realize precise hard_drawn tuhes, the adjustment of slide rail moving velocity when more easily realizing the flaw detection to irregularly shaped weld seam and space weld.
Three-dimensional adjustable shelf 2 comprises the second slide rail, second contiguous block 14, second motor 13 and telescopic oil cylinder 3, the bottom of the second slide rail is provided with Connection Block 15, Connection Block 15 has threaded mounting hole and corresponding with the threaded mounting hole on the first contiguous block 7, be connected with the upper surface bolt of the first contiguous block 7 by the Connection Block 15 of the second contiguous block 14 bottom, second motor 13 is arranged on the side of the second rail tips by bolt, its output shaft to stretch in the second slide rail and drives the second contiguous block 14 to move up and down in the second slide rail by transport tape, one end of the cylinder barrel 16 of telescopic oil cylinder 3 is connected with the second contiguous block 14 bolt, the other end is the external part of piston rod 18.
Rotating driving device 4 comprises Connection Card 19, first rotating machine 20 and motor carrying shell 22, the profile of Connection Card 19 is the loop configuration of L shape, centre portion is cavity, one end of Connection Card 19 is fixedly connected with by bearing pin with one end of telescopic oil cylinder 3 piston rod 18, first rotating machine 20 is arranged on the side of the other end of Connection Card 19, its output shaft connects a S. A., S. A. runs through Connection Card 19, S. A. and motor carry shell 22 and are fixedly connected with, when the first rotating machine 20 works, output shaft driven rotary axle rotates, when S. A. rotates, drive motor carrying shell 22 also correspondingly rotates.S. A. is fixedly connected with the second rotating machine 21, drives the second rotating machine 21 to rotate, realize the position adjustments of comprehensive adaptive device 5 when S. A. rotates, and then regulates the position of super sonic angle probe.
Comprehensive adaptive device 5 comprises the second rotating machine 21, ball pivot axle shell 23, holddown spring 24, ball pivot axle 25 and ball pivot shell 27, the top of ball pivot axle shell 23 and the output shaft of the second rotating machine 21 are in transmission connection, bottom is provided with spherosome, spherosome comprises a spherical hollow space, spherosome also has three gap, spherosome is designed to three-jaw structure, spherosome is that soft material is made, holddown spring 24 to be placed in spherical hollow space and to hang on the circular ring structure on the inner plane of spherical hollow space hole, the bottom of holddown spring 24 contacts naturally with ball pivot axle 25, ball pivot axle 25 is fixedly connected with a super sonic angle probe 26 by the stock end extended.The spherosome of holddown spring 24, ball pivot axle 25, ball pivot axle shell 23 bottom is placed in ball pivot shell, ball pivot shell 27 is the housing of a hollow, top and the ball pivot axle shell 23 of ball pivot shell 27 are connected as a single entity, the contact internal walls of ball pivot axle 25 and ball pivot shell 27.Second rotating machine 21 is installed in motor carrying shell 22.
Ball strand axle 25 contacts naturally with holddown spring 24, without the need to connecting, because of in self-regulating process, ball strand axle 25 may and holddown spring 24 between there is small relative sliding, but at initial condition holddown spring 24 to the very little pressure of ball strand axle 25 1, spring pressure and ball twist axle shell bottom together with ball twisted axle 25 and is pressed in ball and twists on the inwall of shell 27; It is two parts that ball strand axle 25 twists axle shell 23 with ball, initial condition ball pivot axle 25 twists contacting bottom of axle shell 23 with ball, withstand mutually, ball pivot axle 25 stressed larger time while being under pressure " contact with driving surface ", ball pivot axle 25 is pressed in the spherical hollow space of ball strand axle shell 23, utilizes the three-jaw structure locking ball pivot axle 25 of ball pivot axle shell 23 lower end to move together.
Utilize the operating process of this comprehensive automatic weld seam fault finder actuating device as follows,
When needs carry out heads for crank detection of ultrasonic bonding lines, start traveling gear 1, stepping motor 11 operating band motor car wheel 10, 12 rotate, make car body 6 while being detected object, make super sonic angle probe 26 near being detected face, then stepping motor 11 is out of service, the piston rod 18 of telescopic oil cylinder 3 stretches out and super sonic angle probe 26 and weld seam is fitted, the motion of telescopic oil cylinder 3 makes super sonic angle probe 26 contact with the face of being detected and stressed, thus power is passed to ball strand axle 25, ball is twisted axle shell 23 and struts by ball pivot axle 25, ball pivot axle 25 is pressed into ball strand axle shell 23, and locking mutually, make ball twist axle 25 and on super sonic angle probe 26 twist together with axle shell 23 with ball and move.Then the first motor 8 and the second motor 13 is started, by the parallel motion of the first contiguous block 7 and moving up and down of the second contiguous block 14, super sonic angle probe 26 progressively detects being detected face, in the process progressively detected, when super sonic angle probe 26 runs into irregular weld seam, comprehensive adaptive device 5 can make super sonic angle probe 26 make real-time adjustment.When detecting a flaw to the weld seam on inclined-plane, first make rotating driving device 4 turn to ultrasonic probe bottom surface and be detected almost parallel position, face, then carry out next step operation; During to irregularly shaped or space structure seam inspection, by to control system and mcu programming, make the motion that it controls between the first slide rail 9, second slide rail, telescopic oil cylinder 3, rotating driving device 4, the run trace (path) of each motion synthesis expection, make super sonic angle probe 26 all the time with to be detected weld seam tangent, accomplish to detect the most accurately.
After detection terminates, the piston rod 18 of telescopic oil cylinder 3 bounces back, thus super sonic angle probe 26 is separated with the face of being detected, and is resetted by the holddown spring 24 compressed, and ball is twisted axle 25 and eject ball strand axle shell 23, ball pivot axle 25 is returned to initial position.
Embodiment 2:
A kind of comprehensive automatic weld seam fault finder actuating device, structure as described in Example 1, its difference is: utilize hydraulic efficiency pressure system to carry out the driving of the first contiguous block 7, second contiguous block 14, the piston rod of hydraulic actuating cylinder is connected with the first contiguous block 7 or the second contiguous block 14, is moved in the first slide rail 9 or the second slide rail by flexible drive first contiguous block 7 of piston rod or the second contiguous block 14.
Claims (9)
1. a comprehensive automatic weld seam fault finder actuating device, it is characterized in that, comprise traveling gear, three-dimensional adjustable shelf, rotating driving device and comprehensive adaptive device, traveling gear arranges described three-dimensional adjustable shelf, three-dimensional adjustable shelf arranges described rotating driving device, and rotating driving device is connected with comprehensive adaptive device.
2. comprehensive automatic weld seam fault finder actuating device as claimed in claim 1, it is characterized in that, described traveling gear comprises car body, arranges wheel in the both sides of car body, and the bottom of car body is provided with motor, and the output shaft of motor is connected with wheel drive.
3. comprehensive automatic weld seam fault finder actuating device as claimed in claim 2, it is characterized in that, described motor is stepping motor.
4. comprehensive automatic weld seam fault finder actuating device as claimed in claim 2, it is characterized in that, arrange the first slide rail, the first contiguous block and the first motor at the top of car body, the first motor is arranged on the first slide rail side and drives the first contiguous block parallel motion in the first slide rail by transport tape.
5. comprehensive automatic weld seam fault finder actuating device as claimed in claim 4, it is characterized in that, described three-dimensional adjustable shelf comprises the second slide rail, the second contiguous block, the second motor and telescopic oil cylinder, the bottom of the second slide rail is fixedly connected with the first contiguous block, second motor is arranged on the second slide rail side and drives the second contiguous block to move up and down in the second slide rail by transport tape, and one end of telescopic oil cylinder is fixedly connected with the second contiguous block.
6. comprehensive automatic weld seam fault finder actuating device as claimed in claim 5, it is characterized in that, described rotating driving device comprises Connection Card, the first rotating machine and motor carrying shell, one end of Connection Card is fixedly connected with one end of telescopic oil cylinder piston rod, first rotating machine is arranged on the other end of Connection Card and is connected with transmission of rotary axis, and S. A. and motor carry shell and be fixedly connected with.
7. comprehensive automatic weld seam fault finder actuating device as claimed in claim 6, it is characterized in that, described comprehensive adaptive device comprises the second rotating machine, ball pivot axle shell, holddown spring, ball pivot axle and ball pivot shell, the top of ball pivot axle shell and the output shaft of the second rotating machine are in transmission connection, bottom is provided with spherosome, spherosome comprises a spherical hollow space, holddown spring is placed in spherical hollow space and one end and is connected with ball pivot axle shell, the other end is connected with ball pivot axle, ball pivot axle is placed in ball pivot shell, ball pivot shell is connected with ball pivot axle shell, second rotating machine is installed in motor carrying shell.
8. comprehensive automatic weld seam fault finder actuating device as claimed in claim 7, it is characterized in that, described spherosome offers three gap, three gap communicate with spherical hollow space.
9. comprehensive automatic weld seam fault finder actuating device as claimed in claim 7, it is characterized in that, described seam inspection instrument actuating device also comprises super sonic angle probe, and described super sonic angle probe is fixedly connected with one end of ball pivot axle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521034159.1U CN205168696U (en) | 2015-12-11 | 2015-12-11 | All -round automatic welding seam appearance drive arrangement that detects a flaw |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521034159.1U CN205168696U (en) | 2015-12-11 | 2015-12-11 | All -round automatic welding seam appearance drive arrangement that detects a flaw |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205168696U true CN205168696U (en) | 2016-04-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201521034159.1U Withdrawn - After Issue CN205168696U (en) | 2015-12-11 | 2015-12-11 | All -round automatic welding seam appearance drive arrangement that detects a flaw |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205168696U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105416436A (en) * | 2015-12-11 | 2016-03-23 | 山东科技大学 | Comprehensive automatic weld seam flaw detection instrument driving device and application thereof |
| CN107215409A (en) * | 2017-06-27 | 2017-09-29 | 李良杰 | Anti- rolling probe vehicles |
| CN109270214A (en) * | 2018-08-30 | 2019-01-25 | 武汉船用机械有限责任公司 | A kind of failure detector for cable saddle saddle slot partition weld seam |
-
2015
- 2015-12-11 CN CN201521034159.1U patent/CN205168696U/en not_active Withdrawn - After Issue
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105416436A (en) * | 2015-12-11 | 2016-03-23 | 山东科技大学 | Comprehensive automatic weld seam flaw detection instrument driving device and application thereof |
| CN107215409A (en) * | 2017-06-27 | 2017-09-29 | 李良杰 | Anti- rolling probe vehicles |
| CN107215409B (en) * | 2017-06-27 | 2019-03-12 | 李良杰 | Anti- rolling probe vehicles |
| CN109270214A (en) * | 2018-08-30 | 2019-01-25 | 武汉船用机械有限责任公司 | A kind of failure detector for cable saddle saddle slot partition weld seam |
| CN109270214B (en) * | 2018-08-30 | 2021-08-24 | 武汉船用机械有限责任公司 | Flaw detection device for cable saddle groove partition plate weld joint |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20160420 Effective date of abandoning: 20170704 |