CN106592680B - A kind of die forging method of combined type excavator bucket teeth and its tooth tip - Google Patents
A kind of die forging method of combined type excavator bucket teeth and its tooth tip Download PDFInfo
- Publication number
- CN106592680B CN106592680B CN201611255691.5A CN201611255691A CN106592680B CN 106592680 B CN106592680 B CN 106592680B CN 201611255691 A CN201611255691 A CN 201611255691A CN 106592680 B CN106592680 B CN 106592680B
- Authority
- CN
- China
- Prior art keywords
- toothholder
- tooth
- tooth tip
- pin hole
- installing port
- 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
Links
Classifications
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
- E02F9/28—Small metalwork for digging elements, e.g. teeth scraper bits
- E02F9/2808—Teeth
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
- B21J1/00—Preparing metal stock or similar ancillary operations prior, during or post forging, e.g. heating or cooling
- B21J1/06—Heating or cooling methods or arrangements specially adapted for performing forging or pressing operations
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21K—MAKING FORGED OR PRESSED METAL PRODUCTS, e.g. HORSE-SHOES, RIVETS, BOLTS OR WHEELS
- B21K5/00—Making tools or tool parts, e.g. pliers
- B21K5/12—Making tools or tool parts, e.g. pliers other cutting tools
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/0068—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for particular articles not mentioned below
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
- E02F9/28—Small metalwork for digging elements, e.g. teeth scraper bits
- E02F9/2808—Teeth
- E02F9/2816—Mountings therefor
- E02F9/2833—Retaining means, e.g. pins
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
- E02F9/28—Small metalwork for digging elements, e.g. teeth scraper bits
- E02F9/2808—Teeth
- E02F9/2858—Teeth characterised by shape
-
- Y—GENERAL 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- Mining & Mineral Resources (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Gears, Cams (AREA)
- Component Parts Of Construction Machinery (AREA)
Abstract
The invention discloses a kind of combined type excavator bucket teeth and its die forging methods of tooth tip, including toothholder and tooth tip, the toothholder rear end is equipped with bucket lip installing port, and the toothholder front end is equipped with the dovetails that installation is connect with tooth tip, and the toothholder front and tooth tip junction are equipped with pin hole；The tooth tip includes middle tooth and shield flank plate, the middle tooth two sides are respectively arranged with shield flank plate, toothholder installing port is arranged in the middle tooth rear end, toothholder installing port front end is equipped with the dovetail groove being coupled with dovetails, it is respectively equipped with blind pin hole corresponding with pin hole at the toothholder installation labium maxillare and lower lip, is locked middle tooth on toothholder by the adjusting Assembly of pin being arranged in the pin hole.Tooth tip, the coupling structure of toothholder are reasonable, and long-time service does not easily cause tooth tip to lose；It changes conveniently.
Description
Technical field
The present invention relates to a kind of excavator fields, and in particular to the die forging side of a kind of combined type excavator bucket teeth and its tooth tip
Method.
Background technique
Excavator bucket teeth is the typical wear resistant component of excavating equipment.Bucket tooth serious wear in use, part replacement
Frequently.In order to reduce the cost of bucket tooth, it is typically designed to composite structure.
There is also following defects for existing Dipper Teeth：Tooth tip, the coupling structure of toothholder are unreasonable, and long-time service causes tooth
Point is lost；Change inconvenience；In addition, the tooth tip of the prior art generally uses low-alloy steel material, the synthesis of low-alloy steel material
Mechanical property is preferable, is less prone to the case where snapping, but the abrasion of low-alloy steel material cannot rise than more serious when may wear to
To when protective effect, then needing to carry out replacement processing, frequent bucket tooth of replacing not only reduces efficiency so that using at
This is also greatly increased；And if when using hardness higher alloy material production bucket tooth, although having preferable wear-resisting property,
It is that comprehensive mechanical property is poor, when use is easy to snap.
Summary of the invention
The purpose of the present invention is to overcome the deficiencies of the prior art and provide a kind of combined type excavator bucket teeth and its tooth tip
Die forging method, solve the problems, such as that Dipper Teeth changes the inconvenient and short-life problem of tooth tip.
Of the invention is achieved through the following technical solutions：A kind of combined type excavator bucket teeth, including toothholder and tooth tip, it is described
Toothholder rear end be equipped with bucket lip installing port, the toothholder front end be equipped with connect with tooth tip installation dovetails, the toothholder front and
Tooth tip junction is equipped with pin hole；The tooth tip includes middle tooth and shield flank plate, and the middle tooth two sides are respectively arranged with shield flank
Toothholder installing port is arranged in plate, the middle tooth rear end, and toothholder installing port front end is equipped with the dovetail groove being coupled with dovetails,
It is respectively equipped with blind pin hole corresponding with pin hole at the toothholder installation labium maxillare and lower lip, passes through the adjusting of setting in the pin hole
Assembly of pin locks middle tooth on toothholder.
Further, the adjusting Assembly of pin includes alligator, guide and turbine adjustment axis, and the guide both ends lead to respectively
It crosses and is threaded with alligator, worm thread, turbo tooth and pin in the turbine adjustment axis are provided on the guide outer ring surface
The worm thread engagement on outer ring surface is covered, drives guide to rotate by rotation turbine adjustment axis, guide rotation drives two again
The alligator at end extends and shortens.
Further, it is provided with limited block on the alligator, what being provided with of the pin hole both ends matched with limited block
Limiting slot, limiting alligator to the restriction of limited block by limiting slot can only be axially moved.
Further, silicone oil rubber shock-absorbing gasket is provided between the toothholder installation labium maxillare and lower lip and toothholder.
Further, the toothholder upper front end is provided with wear-resisting cap.
Further, the tooth tip uses A-100 alloy steel dies forging molding, and the contour forging technique of tooth tip includes the following steps：
Step 1：Blanking；
Step 2：Blank machine adds；
Step 3：By machine plus after blank be put into electric furnace heating；
Step 4：Forging famine is carried out using flat-die hammer, it is air-cooled after completion forging is waste；
Step 5：Quarry stone is put into electric furnace heating, while carrying out mold preheating；
Step 6：It is air-cooled after completion die forging using jump bit or counter-blow hammer die forging；
Step 7：Heat treatment.
Further, the heating process of blank is that electric in-furnace temperature is first risen to 850 DEG C, is then kept the temperature in the step 3
60min, then electric in-furnace temperature is risen to 1050 DEG C, keep the temperature 30min；
The heating process of quarry stone is in the step 5, and electric in-furnace temperature is first risen to 850 DEG C, then keeps the temperature 40min, then
Electric in-furnace temperature is risen to 1050 DEG C, keeps the temperature 25min.
Further, the preheating temperature of mold is 250 DEG C~350 DEG C in the step 5, and when preheating is 2 hours a length of.
Compared with prior art, the present invention having the following advantages and benefits：
1, tooth tip uses separate structure, convenient for forging and processing, is that toothholder is coupled and is also convenient for changeing；
2, tooth tip connects installation using dovetail configuration with toothholder, firmly installs, not easily to fall off；The connection knot of tooth tip, toothholder
Structure is reasonable, and long-time service does not easily cause tooth tip to lose；It changes conveniently；
3, tooth tip and toothholder use also using the installation of Assembly of pin lock is adjusted and adjust Assembly of pin, can be on tooth tip
By blind pin hole can lock, blind pin hole can be exposed to avoid pin shaft, and preventing from the reasons such as being deformed, get rusty leads to pin shaft
Dismantle constant problem；
4, it adjusts Assembly of pin and uses stretching structure, it is simple and practical in structure using the transmission principle of worm screw turbine, meanwhile,
It adjusts Assembly of pin and protection is hidden by tooth tip (toothholder installs labium maxillare and lower lip, protects flank plate) comprehensively, be hardly damaged, dismantle
It is convenient；
5, add silicone oil rubber shock-absorbing gasket that can make gap up between tooth tip and toothholder, on the one hand can reduce impact force
On the other hand influence to the hydraulic system, electric system of excavator can also be prevented effectively between tooth tip and toothholder because mutually
The adhesion oxidation of effect is got rusty；
6, toothholder upper front end is provided with wear-resisting cap, can effectively improve the wearability of bucket tooth, to improve using the longevity
Life；
7, the present invention completes the die-forging forming process of tooth tip by two fire, crystal grain can be made more to refine, and does not have to waste
Excessive forging times have ensured the higher intensity of tooth tip, and have saved processing cost.
Detailed description of the invention
Attached drawing described herein is used to provide to further understand the embodiment of the present invention, constitutes one of the application
Point, do not constitute the restriction to the embodiment of the present invention.In the accompanying drawings：
Fig. 1 is a kind of structural schematic diagram of combined type excavator bucket teeth of the present invention；
Fig. 2 is the structural schematic diagram of toothholder of the present invention；
Fig. 3 is the structural schematic diagram of pin hole of the present invention；
Fig. 4 is the structural schematic diagram of tooth tip of the present invention；
Fig. 5 is the A-A schematic cross-sectional view of Fig. 4 of the present invention；
Fig. 6 is the structural schematic diagram that the present invention adjusts Assembly of pin；
Label and corresponding parts title in attached drawing：
1- toothholder, 2- tooth tip, 3- struggle against lip installing port, 4- dovetails, 5- pin hole, tooth in 6-, and 7- protects flank plate, 8- toothholder peace
Mouth, the blind pin hole of 9- are filled, 10- adjusts Assembly of pin, 11- alligator, 12- guide, 13- turbine adjustment axis, 14- limited block, 15- limit
Slot, 16- silicone oil rubber shock-absorbing gasket, the wear-resisting cap of 17-, 18- turbine adjust shaft mounting hole.
Specific embodiment
To make the objectives, technical solutions, and advantages of the present invention clearer, below with reference to embodiment and attached drawing, to this
Invention is described in further detail, and exemplary embodiment of the invention and its explanation for explaining only the invention, are not made
For limitation of the invention.
Embodiment 1
As shown in figures 1 to 6, a kind of combined type excavator bucket teeth of the present invention, including toothholder 1 and tooth tip 2,1 rear end of toothholder are equipped with
Struggle against lip installing port 3, and 1 front end of toothholder is equipped with the dovetails 4 that installation is connect with tooth tip 2,1 front of toothholder and 2 junction of tooth tip
Equipped with pin hole 5；Tooth tip 2 includes middle tooth 6 and shield flank plate 7, and middle 6 two sides of tooth are respectively arranged with shield flank plate 7, it is described in
Toothholder installing port 8 is arranged in 6 rear end of tooth, and 8 front end of toothholder installing port is equipped with the dovetail groove being coupled with dovetails 4, toothholder
It is respectively equipped with blind pin hole 9 corresponding with pin hole 5 at 8 upper lip of installing port and lower lip, passes through the adjusting Assembly of pin of setting in pin hole 5
10 lock middle tooth 6 on toothholder 1.
As shown in fig. 6, a kind of combined type excavator bucket teeth of the present invention, adjusting Assembly of pin 10 includes alligator 11, guide 12
With turbine adjustment axis 13,12 both ends of guide have been connected through a screw thread alligator 11 respectively, have been provided with snail on 12 outer ring surface of guide
Bar screw thread, the turbo tooth in turbine adjustment axis 13 are engaged with the worm thread on 12 outer ring surface of guide, are passed through rotation turbine and are adjusted
Axis 13 drives guide 12 to rotate, and guide 12 rotates drives the alligator 11 at both ends to extend and shorten again.
As shown in figs. 3 and 6, a kind of combined type excavator bucket teeth of the present invention is provided with limited block 14, pin hole 5 on alligator 11
Both ends are provided with the limiting slot 15 matched with limited block 14, limit tooth to the restriction of limited block 14 by limiting slot 15
Pin 11 can only be axially moved.
As shown in Figure 1, a kind of combined type excavator bucket teeth of the present invention, toothholder 1 are installed between labium maxillare and lower lip and toothholder
It is provided with silicone oil rubber shock-absorbing gasket 16.As shown in Figure 1, a kind of combined type excavator bucket teeth of the present invention, on 1 front end of toothholder
Portion is provided with wear-resisting cap 17.
A kind of combined type excavator bucket teeth of the present invention will adjust Assembly of pin 10 first and be mounted on pin when changeing installation
Hole 5 and perpendicular turbine are adjusted in shaft mounting hole 18, then middle tooth 6 is mounted on to the swallow of 1 front end of toothholder by dovetail groove
It on tail block 4, and is installed in toothholder 1 and silicone oil rubber shock-absorbing gasket 16 is installed between labium maxillare and lower lip and toothholder, by adjusting whirlpool
Adjustment axis 13 is taken turns, is scheduled on alligator 11 in the blind pin hole 9 at 8 upper lip of toothholder installing port and lower lip, then by the shield of middle 6 two sides of tooth
The installation of flank plate 7 is fixed, then wear-resisting cap 17 is mounted on 1 upper front end of toothholder and completes to install, when disassembly, using reverse step
?.
Embodiment 2
As illustrated in figures 4-5, a kind of die forging method of tooth tip of the present invention, tooth tip 2 use A-100 alloy steel dies forging molding, tooth
The contour forging technique of point 2 includes the following steps：
Step 1：Blanking；
Step 2：Blank machine adds；The heating process of blank is in step 3, and electric in-furnace temperature is first risen to 850 DEG C, is then protected
Warm 60min, then electric in-furnace temperature is risen to 1050 DEG C, keep the temperature 30min；The preheating temperature of mold is 250 DEG C~350 in step 5
DEG C, when preheating, is 2 hours a length of.
Step 3：By machine plus after blank be put into electric furnace heating；
Step 4：Forging famine is carried out using flat-die hammer, it is air-cooled after completion forging is waste；
Step 5：Quarry stone is put into electric furnace heating, while carrying out mold preheating；The heating process of quarry stone is in step 5, first
Electric in-furnace temperature is risen to 850 DEG C, 40min is then kept the temperature, then electric in-furnace temperature is risen to 1050 DEG C, keeps the temperature 25min.
Step 6：It is air-cooled after completion die forging using jump bit or counter-blow hammer die forging；
Step 7：Heat treatment.
The die-forging forming process that tooth tip is completed by two fire, can be such that crystal grain more refines, and ensure the higher intensity of tooth tip.Base
Material or quarry stone are heated to 850 DEG C and keep the temperature, it is therefore intended that prevent heating too fast, built-in thermal stress is excessive to be caused to crack, shadow
Ring the performance of tooth tip.Blank or quarry stone are being heated to 1050 DEG C and are keeping the temperature, it is therefore intended that make interior tissue austenitizing, be conducive to
Deformation.
Above-described specific embodiment has carried out further the purpose of the present invention, technical scheme and beneficial effects
It is described in detail, it should be understood that being not intended to limit the present invention the foregoing is merely a specific embodiment of the invention
Protection scope, all within the spirits and principles of the present invention, any modification, equivalent substitution, improvement and etc. done should all include
Within protection scope of the present invention.
Claims (3)
1. a kind of combined type excavator bucket teeth, including toothholder (1) and tooth tip (2), it is characterised in that：Toothholder (1) rear end is set
There is bucket lip installing port (3), toothholder (1) front end is equipped with the dovetails (4) for connect and installing with tooth tip (2), before the toothholder (1)
Portion and tooth tip (2) junction are equipped with pin hole (5)；The tooth tip (2) includes middle tooth (6) and shield flank plate (7), the middle tooth
(6) two sides are respectively arranged with shield flank plate (7), middle tooth (6) rear end setting toothholder installing port (8), the toothholder installing port
(8) front end is equipped with the dovetail groove being coupled with dovetails (4), is respectively equipped at toothholder installing port (8) upper lip and lower lip
Blind pin hole (9) corresponding with pin hole (5), the interior adjusting Assembly of pin (10) by setting of the pin hole (5) are locked by middle tooth (6)
On toothholder (1)；
The adjusting Assembly of pin (10) includes alligator (11), guide (12) and turbine adjustment axis (13), the guide (12) two
End has been connected through a screw thread alligator (11) respectively, and worm thread is provided on guide (12) outer ring surface, and the turbine is adjusted
Turbo tooth on axis (13) is engaged with the worm thread on guide (12) outer ring surface, drives pin by rotation turbine adjustment axis (13)
(12) rotation is covered, guide (12) rotation drives the alligator (11) at both ends to extend and shorten again；
Toothholder (1) upper front end is provided with wear-resisting cap (17).
2. a kind of combined type excavator bucket teeth according to claim 1, it is characterised in that：It is provided on the alligator (11)
Limited block (14), pin hole (5) both ends are provided with the limiting slot (15) matched with limited block (14), pass through limiting slot
(15) restriction of limited block (14) can only be axially moved to limit alligator (11).
3. a kind of combined type excavator bucket teeth according to claim 1, it is characterised in that：On toothholder (1) installing port
Silicone oil rubber shock-absorbing gasket (16) is provided between lip and lower lip and toothholder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611255691.5A CN106592680B (en) | 2016-12-30 | 2016-12-30 | A kind of die forging method of combined type excavator bucket teeth and its tooth tip |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611255691.5A CN106592680B (en) | 2016-12-30 | 2016-12-30 | A kind of die forging method of combined type excavator bucket teeth and its tooth tip |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106592680A CN106592680A (en) | 2017-04-26 |
| CN106592680B true CN106592680B (en) | 2018-11-23 |
Family
ID=58581521
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611255691.5A Expired - Fee Related CN106592680B (en) | 2016-12-30 | 2016-12-30 | A kind of die forging method of combined type excavator bucket teeth and its tooth tip |
Country Status (1)
| Country | Link |
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| CN (1) | CN106592680B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107088636A (en) * | 2017-05-11 | 2017-08-25 | 泉州市方盛机械发展有限公司 | The forging mold and forging method of bucket tooth |
| EP3921478A4 (en) * | 2019-02-08 | 2022-11-23 | ESCO Group LLC | Wear assembly for earth working equipment |
| CN115030260A (en) * | 2022-05-05 | 2022-09-09 | 宁国市开源电力耐磨材料有限公司 | Combined bucket tooth and tooth seat structure for loader |
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|---|---|---|---|---|
| CN101851943A (en) * | 2009-03-30 | 2010-10-06 | 柯荣庆 | Replacing and clamping-pushing device of digging and shoveling teeth of engineering construction machines and tools |
| CN201771015U (en) * | 2010-07-02 | 2011-03-23 | 上海彭浦机器厂有限公司 | Excavator bucket tooth |
| CN202767164U (en) * | 2012-09-19 | 2013-03-06 | 宁波吉威熔模铸造有限公司 | Bucket teeth |
| CN203960939U (en) * | 2014-06-06 | 2014-11-26 | 史宝光 | Diamond nano modification excavator bucket teeth |
| CN105051294A (en) * | 2013-01-25 | 2015-11-11 | 昆士兰中部矿业供应有限公司 | Excavator wear assembly |
| CN106086623A (en) * | 2016-07-13 | 2016-11-09 | 江苏东顺新能源科技有限公司 | A kind of die forging bucket tooth material and die forging bucket tooth processing technique |
| CN206328798U (en) * | 2016-12-30 | 2017-07-14 | 永平县建达鑫鑫合金铸造有限公司 | A kind of combined type excavator bucket teeth |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7032334B2 (en) * | 2004-05-28 | 2006-04-25 | Trn Business Trust | System and method for coupling excavation equipment components |
-
2016
- 2016-12-30 CN CN201611255691.5A patent/CN106592680B/en not_active Expired - Fee Related
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101851943A (en) * | 2009-03-30 | 2010-10-06 | 柯荣庆 | Replacing and clamping-pushing device of digging and shoveling teeth of engineering construction machines and tools |
| CN201771015U (en) * | 2010-07-02 | 2011-03-23 | 上海彭浦机器厂有限公司 | Excavator bucket tooth |
| CN202767164U (en) * | 2012-09-19 | 2013-03-06 | 宁波吉威熔模铸造有限公司 | Bucket teeth |
| CN105051294A (en) * | 2013-01-25 | 2015-11-11 | 昆士兰中部矿业供应有限公司 | Excavator wear assembly |
| CN203960939U (en) * | 2014-06-06 | 2014-11-26 | 史宝光 | Diamond nano modification excavator bucket teeth |
| CN106086623A (en) * | 2016-07-13 | 2016-11-09 | 江苏东顺新能源科技有限公司 | A kind of die forging bucket tooth material and die forging bucket tooth processing technique |
| CN206328798U (en) * | 2016-12-30 | 2017-07-14 | 永平县建达鑫鑫合金铸造有限公司 | A kind of combined type excavator bucket teeth |
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| Publication number | Publication date |
|---|---|
| CN106592680A (en) | 2017-04-26 |
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