CN104192728B - Lifting monolock stops mechanical and electric equipment installation mechanism of hook type rotation substation - Google Patents
Lifting monolock stops mechanical and electric equipment installation mechanism of hook type rotation substation Download PDFInfo
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- CN104192728B CN104192728B CN201410493678.8A CN201410493678A CN104192728B CN 104192728 B CN104192728 B CN 104192728B CN 201410493678 A CN201410493678 A CN 201410493678A CN 104192728 B CN104192728 B CN 104192728B
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- 238000009434 installation Methods 0.000 title claims abstract description 12
- 239000002965 rope Substances 0.000 claims abstract description 15
- 239000000725 suspension Substances 0.000 claims abstract description 11
- 210000004279 Orbit Anatomy 0.000 claims abstract description 8
- 238000009954 braiding Methods 0.000 claims description 9
- 230000000875 corresponding Effects 0.000 claims description 4
- 230000001131 transforming Effects 0.000 abstract description 7
- 238000000034 method Methods 0.000 abstract description 4
- 230000004301 light adaptation Effects 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 12
- 230000000694 effects Effects 0.000 description 5
- 239000000463 material Substances 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 238000005452 bending Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 230000032258 transport Effects 0.000 description 2
- 210000001503 Joints Anatomy 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 230000000630 rising Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 231100000817 safety factor Toxicity 0.000 description 1
Abstract
The invention discloses a kind of lifting monolock and stop mechanical and electric equipment installation mechanism of hook type rotation substation, comprise column base pitch, the slip joint that can rotate around the rotary column of mechanism base, fixed arm is mounted with on the top of slip joint, be provided with the telescopic boom that can lock in fixed arm, the front end of telescopic boom is provided with the suspension hook for lifting appliance by assembly pulley and lifting rope; Be provided with counterweight trolley in the bottom of column base pitch, counterweight trolley can rotate with column base pitch and slip joint around the circular orbit of mechanism base, realizes the revolution of 360 degree, and adaptation operation is wide, rotation is dexterous light; The lifting mechanism of slip joint has locking and braking function, can arbitrary height be rested on, change manpower in the past and the operation form of power transformation system is installed, eliminate the potential safety hazard in installation exercise process, not only increase economic benefit, also improve safety benefit.
Description
Technical field:
The present invention relates to a kind of lifting monolock and stop mechanical and electric equipment installation mechanism of hook type rotation substation.
Background technology:
The power transformation system configuration of substation is tight short, and weight of equipment is large, specification unshapeliness, and inspection and repair work normality is carried out; The voltage class of substation is high, and safety gap is little, and exposed power supply point is many.Cause for above-mentioned reasons in transformer maintenance, detection, renewal process, heavy duty work facility cannot use, and power failure range is large, and construction period is tight, and personnel's operation exists larger potential safety hazard.Therefore be necessary to research and develop special operating apparatus, guarantee the job platform meeting the equipment dismounting in power transformation interval, the safety control of operating personnel and effective and easy setting is provided.
Summary of the invention:
For overcoming the defect of prior art, the object of the present invention is to provide a kind of lifting monolock to stop mechanical and electric equipment installation mechanism of hook type rotation substation, its structure is simple, lightweight, splits combination easy, and the many also convenient transports of function, work efficiency is high.The all devices disassembling operations in the interval certain altitude of power transformation can be met, reduce power failure range, ensure the requirement of safe spacing.
Technical solution problem of the present invention adopts following technical scheme:
Lifting monolock stops mechanical and electric equipment installation mechanism of hook type rotation substation:
Set up an organization base, the cardan wheel that described base comprises criss-cross supporting leg and is located at bottom described supporting leg, the circular orbit that described supporting leg is fixedly installed with base center is the center of circle, and base center is provided with the longitudinal sleeve be fixedly connected with supporting leg;
Arrange the rotary column be plugged on described sleeve, the rotary column lower part fixed cover being inserted in sleeve inner is connected to the tapered roller bearing mated with described sleeve diameter, and the first half of described rotary column is square tube;
The square-tube type column base pitch that is plugged in the square tube of described rotary column is set and is plugged on the supracoxal slip joint of described column, limiting platform is provided with in the external wall of upper portion integral type of described slip joint, the rear portion of the fixed arm of telescoping boom is square cannula-like, described fixed arm is articulated in the top of slip joint with the square casing at its rear portion, and prevent from by the limiting platform of slip joint is spacing, telescopic boom is provided with in described fixed arm, the two side of described telescopic boom is provided with position-limited trough in the axial direction, bolt hole is provided with in the corresponding two side of fixed arm, the telescopic boom lock bolt be arranged in described bolt hole is locked slip joint by described position-limited trough, arrange the hoisting system of described suspension hook, comprising: be located at the running block on suspension hook, be located at the fixed pulley group of telescopic boom front end, the leading sheave being located at fixed arm afterbody and lifting rope, described lifting rope is driven by motor or manpower drives drive hook lifting,
Counterweight trolley is set, the sidepiece of described counterweight trolley is installed with the exhibition wall of horizontal expansion, counterweight trolley is articulated on described rotary column with the square casing on its exhibition wall, be provided with the roller coordinated with described circular orbit in the bottom of counterweight trolley, the wheel shaft of described roller is arranged on bottom counterweight trolley by bearing;
Anti-dumping rope is also connected with between described counterweight trolley and the upper end of described slip joint;
The lifting mechanism of described slip joint is set, described lifting mechanism comprises: with the capsizing moment spindle of two capstan winches, described capsizing moment spindle is located on the mounting base of counterweight trolley exhibition wall front end by bearing frame, handwheel is connected with in the rear end of capsizing moment spindle, hoist braiding suspender belt one end connect firmly on the capsizing moment spindle between two capstan winches, the other end connects firmly on the braiding suspender belt fixed link of slip joint bottom, and the fixed pulley of Self-stabilised post base pitch outer wall top, the middle part setting of braiding suspender belt is walked around;
The lockable mechanism of described slip joint is set: described lockable mechanism comprises: the pawl base being rigidly attached to capsizing moment spindle front end by key, described pawl base is symmetrically connected with two ratchets by bearing pin, torsion spring; The mounting base of little car exhibition wall front end has been bolted ratchet brake mount, contact with described ratchet brake mount inner chamber seating plane with the aft end face of the ratchet of described two click-fit, the ratchet platen contacted with the front end face forming surface of described ratchet is set, the centre hole of described ratchet platen is threaded with brake-applying handle and is locked by jam nut, and the excircle of ratchet platen is threaded with described ratchet brake mount intracavity sidewall.
Limit, top four outer wall of described column base pitch is provided with deep groove ball bearing, and a part for each described deep groove ball bearing extends into the inner chamber of column base pitch, and the axle of each deep groove ball bearing is laterally fixed on the outer wall of column base pitch; Limit, bottom four inwall of described slip joint is provided with bearing equally, and a part for each described bearing extends the outside of slip joint, and the axle of each bearing is laterally fixed on the inwall of slip joint.
Compared with the prior art, beneficial effect of the present invention is embodied in:
The interval working space of substation's power transformation is limited, needs the equipment weight of maintenance, dismounting, for meeting lifting, the service requirements of this kind of particular job place controller switching equipment, mechanism structure of the present invention is simple, lightweight, splits combination easy, the many also convenient transports of function, work efficiency is high.The all devices dismounting in the interval certain altitude of power transformation can be met, reduce power failure range, ensure the requirement of safe spacing.
Use mechanism of the present invention when carrying out transformer and installing, greatly reduce in-site installation cooperation personnel, not only improve work efficiency, reduce power off time simultaneously, reduce electric quantity loss, improve power supply reliability; Eliminate the potential safety hazard in installation exercise process, not only increase economic benefit, also improve safety benefit.
Lifting mechanism entirety can be rotated with rotary column, expands between operating area to a great extent.
The individual member that jacking mast is made up of the base pitch be set with and slip joint, with support and telescoping boom socket connection, connects freely easy; Lightly, resistance to bending is strong for the base pitch of suit and slip joint relative motion.
Suspension hook arranges running block, there is labour-saving function, the lifting rope of suspension hook of hoisting is driven by motor or manpower drives, suspension hook Liftable transformer, in the interval narrow and small working space of power transformation, ensure safe spacing, large lifting equipment cannot enter, it is easy that mechanism of the present invention splits combination, and Lifting Capacity is strong, can meet construction requirement.
Driver train and ratchet gear brake mechanism realize the functions such as mast jacking, ratchet lock, braking contracting bar (bringing onto load), installed, also can realize brake self-locking function by the commutation changing click.
The anti-lockout mechanism that inclines is made up of the anti-dumping rope be connected between counterweight trolley and slip joint upper end, and this is safety gear, possesses and regulates stretchable mast angle and tensioning mast function, can prevent mast from toppling.
Lifting mechanism is made up of driver train, rope, leading sheave and assembly pulley, and driver train realizes manpower and electric power double drive, the friction drum compact conformation of configuration, small and exquisite.
Supporting shoulder pole is aim at the design of 110kV disconnector, guarantees that magnetic pillar in its disassembly process does not fracture by the effect of transverse force or injured.
Counterweight trolley is actual is a blue structure of material, is sleeved on center steering rotary column, is connected transferable part base pitch root bending moment with telescopic boom base pitch bolt.Counterweight adopts 25kg bucket 8 to be only positioned in material basket, and draw materials easily, also deficiency of throwing aside is cherished.
Accompanying drawing illustrates:
Fig. 1 is overall structure schematic diagram of the present invention; Fig. 2 is the assembling schematic diagram of mechanism base and rotary column; Fig. 2 A is the birds-eye view of mechanism base; Fig. 3 A, 3B, 3C are respectively the left view of column base pitch, front view and right elevation; Fig. 3 D is the assembling schematic diagram of limit, column base pitch top four outer wall deep groove ball bearing; Fig. 4 A, 4B, 4C are respectively the left view of slip joint, front view and right elevation; Fig. 4 D is the F direction view of slip joint bottom in Fig. 4 B; Fig. 4 E is the assembling schematic diagram of limit, slip joint bottom four inwall bearing; Fig. 5 is the assembling schematic diagram of column base pitch and slip joint; Fig. 6 A, 6B are the structural representation of telescopic boom and fixed arm; Fig. 6 C is the assembling enlarged diagram of telescopic boom and fixed arm and telescopic boom lock bolt; The E direction view that Fig. 7 A, 7B are the front view of counterweight trolley and birds-eye view, Fig. 7 C is counterweight trolley exhibition arm top in Fig. 7 A; Fig. 8 is the schematic diagram of slip joint lockable mechanism; Fig. 8 A is the assembling schematic diagram of brake-applying handle, jam nut, ratchet platen; Fig. 8 B is the birds-eye view of ratchet platen; Fig. 9 is the assembling schematic diagram of ratchet platen, ratchet, ratchet brake mount; Fig. 9 A, 9B are front view and the birds-eye view of ratchet; Figure 10 is the assembling schematic diagram of ratchet, pawl base, ratchet; Figure 11 is the assembling schematic diagram of pawl base, capsizing moment spindle, handwheel; Figure 12 is the assembling schematic diagram of capsizing moment spindle, pawl base, ratchet.
Number in the figure: 1 mechanism base, 101 supporting legs, 102 cardan wheels, 103 circular orbits, 104 longitudinal sleeves, 105 rotary columns, 106 tapered roller bearings, 2 column base pitch, 201 deep groove ball bearings, 3 slip joints, 301 limiting platforms, 302 suspender belt fixed links, 303 bearings, 5 counterweight trolleys, 501 exhibition arms, 502 rollers, 503 anti-dumping ropes, 504 mounting bases, 601 capsizing moment spindles, 602 suspender belts, 603 handwheels, 701 pawl bases, 702 ratchets, 703 ratchet brake mounts, 704 ratchets, 705 ratchet platens, 706 brake-applying handles, 707 jam nuts; 801 fixed arms, 802 telescopic booms, 803 position-limited troughs, 804 telescopic boom lock bolts, 901 suspension hooks, 902 running blocks, 903 fixed pulley groups, 904 leading sheaves, 905 lifting ropes.
Below by way of detailed description of the invention, and the invention will be further described by reference to the accompanying drawings.
Detailed description of the invention:
Embodiment: see accompanying drawing, the lifting monolock of the present embodiment stops mechanical and electric equipment installation mechanism of hook type rotation substation, its following structural features:
Set up an organization base 1, and base comprises criss-cross supporting leg 101 and is located at the cardan wheel 102 bottom supporting leg, and the circular orbit 103 that supporting leg to be fixedly installed with base center be the center of circle, base center is provided with the longitudinal sleeve 104 be fixedly connected with supporting leg.
For realizing the rotation of mechanism, arrange the rotary column 105 be plugged on sleeve 104, the rotary column lower part fixed cover being inserted in sleeve inner is connected to the tapered roller bearing 106 mated with sleeve diameter, and the first half of rotary column is square tube, the square-tube type column base pitch 2 be plugged in the square tube of rotary column and the slip joint 3 be plugged on column base pitch 2 are set, limiting platform 301 is provided with in the external wall of upper portion integral type of slip joint 3, the rear portion of the fixed arm 801 of telescoping boom is square cannula-like, fixed arm 801 is articulated in the top of slip joint with the square casing at its rear portion, and prevent from by the limiting platform of slip joint is spacing, telescopic boom 802 is provided with in fixed arm, the two side of telescopic boom is provided with position-limited trough 803 in the axial direction, bolt hole is provided with in the corresponding two side of fixed arm, the telescopic boom lock bolt 804 be arranged in bolt hole is locked slip joint by described position-limited trough, the hoisting system of suspension hook is set, comprise: be located at the running block 902 on suspension hook 901, be located at the fixed pulley group 903 of telescopic boom front end, be located at the leading sheave 904 of fixed arm afterbody and lifting rope 905, lifting rope 905 is driven by motor or manpower drives drive hook lifting.
Counterweight trolley 5 is set, the sidepiece of counterweight trolley is installed with the exhibition arm 501 of horizontal expansion, counterweight trolley is articulated on rotary column 105 with the square casing on its exhibition arm, be provided with the roller 502 coordinated with circular orbit 103 in the bottom of counterweight trolley, the wheel shaft of roller is arranged on bottom counterweight trolley by bearing.Between counterweight trolley and the upper end of slip joint, be also connected with anti-dumping rope 503, prevent whole mechanism from toppling, improve safety factor.In specifically arranging, be provided with bolt slot 505 at the top of counterweight trolley exhibition arm 501, what the lower sides of column base pitch 2 was provided with protrusion puts corresponding bolt with little car exhibition arm bolt slot, by the further fixed weight dolly of this bolt.
The lifting mechanism of slip joint 3 is set, this lifting mechanism comprises: with the capsizing moment spindle 601 of two capstan winches, capsizing moment spindle is located on the mounting base 504 of counterweight trolley exhibition arm 501 front end by bearing frame, handwheel 603 is connected with in the rear end of capsizing moment spindle, hoist braiding suspender belt 602 one end connect firmly on the capsizing moment spindle 601 between two capstan winches, the other end connects firmly on the braiding suspender belt fixed link 302 of slip joint 3 bottom, and the fixed pulley of Self-stabilised post base pitch 2 outer wall top, the middle part setting of braiding suspender belt 602 is walked around.
The lockable mechanism of slip joint 3 is set: this lockable mechanism comprises: the pawl base 701 being rigidly attached to capsizing moment spindle 601 front end by key, pawl base is symmetrically connected with two ratchets 702 by bearing pin, torsion spring; The mounting base of little car exhibition arm front end has been bolted ratchet brake mount 703, the aft end face of the ratchet 704 coordinated with two ratchets 702 contacts with ratchet brake mount 703 inner chamber seating plane, the ratchet platen 705 contacted with the front end face forming surface of ratchet is set, the centre hole of ratchet platen is threaded with brake-applying handle 706 and is locked by jam nut 707, and the excircle of ratchet platen is threaded with ratchet brake mount intracavity sidewall.
Limit, top four outer wall of column base pitch 2 is provided with deep groove ball bearing 201, and a part for each deep groove ball bearing extends into the inner chamber of column base pitch, and the axle of each deep groove ball bearing is laterally fixed on the outer wall of column base pitch; Limit, bottom four inwall of slip joint 3 is provided with bearing 303 equally, and a part for each bearing 303 extends the outside of slip joint, and the axle of each bearing is laterally fixed on the inwall of slip joint.
In embody rule, when needs hoist bucket basket time 4 time, rotate forward handwheel 603, handwheel drives capsizing moment spindle 601 rotate and be wound around suspender belt 602, suspender belt drives slip joint 3 to rise in column base pitch 2, because the friction between column base pitch 2 and slip joint 3 is friction of rolling (effect of deep groove ball bearing 201 and bearing 303), do not need much so play lift, after slip joint 3 rises to specified altitude assignment, stop operating handwheel 603, due to ratchet, the effect of ratchet, slip joint can rest on arbitrary height, now, locked by jam nut 707 between ratchet platen 705 and brake-applying handle 706 and be integrated, and ratchet platen 705 is screwed in ratchet brake mount 703 by its excircle, ratchet platen 705 and ratchet brake mount 703 from two end faces of ratchet 704 by locked for ratchet the inner chamber of ratchet brake mount 703, ratchet 704 controls pawl base 701 can only unidirectional rotation, because pawl base 701 is rigidly attached on capsizing moment spindle 601, therefore handwheel 603 can only rotate forward, guarantee that slip joint 3 can rest on arbitrary height when rising.When bucket falls by needs in the key, brake-applying handle 706 can be rotated backward a little, now ratchet platen 705 also exits a bit slightly in ratchet brake mount 703, the pressure of ratchet platen 705 pairs of ratchets 704 reduces, therefore ratchet 704 can dally in ratchet brake mount 703, due to the effect of gravity, bucket basket 4 declines with slip joint 3, capsizing moment spindle 601 is driven to reverse, capsizing moment spindle drives pawl base and ratchet, ratchet to drive ratchet idle running, when slip joint stops by needs, only brake-applying handle 706 need be rotated forward, by locked for ratchet in ratchet brake mount.
Claims (2)
1. be elevated monolock and stop mechanical and electric equipment installation mechanism of hook type rotation substation, it is characterized in that:
Set up an organization base (1), described base comprises criss-cross supporting leg (101) and is located at the cardan wheel (102) bottom described supporting leg, the circular orbit (103) that described supporting leg to be fixedly installed with base center be the center of circle, base center is provided with the longitudinal sleeve (104) be fixedly connected with supporting leg;
Setting is plugged on the rotary column (105) on described sleeve (104), the rotary column lower part fixed cover being inserted in sleeve inner is connected to the tapered roller bearing (106) mated with described sleeve diameter, and the first half of described rotary column is square tube;
The square-tube type column base pitch (2) be plugged in the square tube of described rotary column and the slip joint (3) be plugged on described column base pitch (2) are set, limiting platform (301) is provided with in the external wall of upper portion integral type of described slip joint (3), the rear portion of the fixed arm (801) of telescoping boom is square cannula-like, described fixed arm (801) is articulated in the top of slip joint with the square casing at its rear portion, and prevent from by the limiting platform of slip joint is spacing, telescopic boom (802) is provided with in described fixed arm, the two side of described telescopic boom is provided with position-limited trough (803) in the axial direction, bolt hole is provided with in the corresponding two side of fixed arm, the telescopic boom lock bolt (804) be arranged in described bolt hole is locked telescopic boom by described position-limited trough, the hoisting system of described suspension hook is set, comprise: be located at the running block (902) on suspension hook (901), be located at the fixed pulley group (903) of telescopic boom front end, be located at the leading sheave (904) of fixed arm afterbody and lifting rope (905), described lifting rope (905) is driven by motor or manpower drives drive hook lifting,
Counterweight trolley (5) is set, the sidepiece of described counterweight trolley is installed with the exhibition wall (501) of horizontal expansion, counterweight trolley is articulated on described rotary column (105) with the square casing on its exhibition wall, be provided with the roller (502) coordinated with described circular orbit (103) in the bottom of counterweight trolley, the wheel shaft of described roller is arranged on bottom counterweight trolley by bearing;
Anti-dumping rope (503) is also connected with between described counterweight trolley and the upper end of described slip joint;
The lifting mechanism of described slip joint (3) is set, described lifting mechanism comprises: with the capsizing moment spindle (601) of two capstan winches, described capsizing moment spindle is located on the mounting base (504) of counterweight trolley exhibition wall (501) front end by bearing frame, handwheel (603) is connected with in the rear end of capsizing moment spindle, hoist braiding suspender belt (602) one end connect firmly on the capsizing moment spindle (601) between two capstan winches, the other end connects firmly on the braiding suspender belt fixed link (302) of slip joint (3) bottom, the fixed pulley that Self-stabilised post base pitch (2) the outer wall top, middle part hoisting braiding suspender belt (602) is arranged is walked around,
The lockable mechanism of described slip joint (3) is set: described lockable mechanism comprises: the pawl base (701) being rigidly attached to capsizing moment spindle (601) front end by key, described pawl base is symmetrically connected with two ratchets (702) by bearing pin, torsion spring; The mounting base of counterweight trolley exhibition wall front end has been bolted ratchet brake mount (703), the aft end face of the ratchet (704) coordinated with described two ratchets (702) contacts with described ratchet brake mount (703) inner chamber seating plane, the ratchet platen (705) contacted with the front end face forming surface of described ratchet is set, the centre hole of described ratchet platen is threaded with brake-applying handle (706) and is locked by jam nut (707), and the excircle of ratchet platen is threaded with described ratchet brake mount intracavity sidewall.
2. lifting monolock according to claim 1 stops mechanical and electric equipment installation mechanism of hook type rotation substation, it is characterized in that, limit, top four outer wall of described column base pitch (2) is provided with deep groove ball bearing (201), a part for each described deep groove ball bearing extends into the inner chamber of column base pitch, and the axle of each deep groove ball bearing is laterally fixed on the outer wall of column base pitch; Limit, bottom four inwall of described slip joint (3) is provided with bearing (301) equally, and a part for each described bearing (301) extends the outside of slip joint, and the axle of each bearing is laterally fixed on the inwall of slip joint.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410493678.8A CN104192728B (en) | 2014-09-24 | 2014-09-24 | Lifting monolock stops mechanical and electric equipment installation mechanism of hook type rotation substation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410493678.8A CN104192728B (en) | 2014-09-24 | 2014-09-24 | Lifting monolock stops mechanical and electric equipment installation mechanism of hook type rotation substation |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104192728A CN104192728A (en) | 2014-12-10 |
| CN104192728B true CN104192728B (en) | 2016-03-23 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410493678.8A Active CN104192728B (en) | 2014-09-24 | 2014-09-24 | Lifting monolock stops mechanical and electric equipment installation mechanism of hook type rotation substation |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104973520A (en) * | 2015-07-03 | 2015-10-14 | 杨海良 | Crane with roller wheel braking device |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4387813A (en) * | 1979-07-17 | 1983-06-14 | The Manitowoc Company, Inc. | Movable ring supported lift crane |
| DE10002917A1 (en) * | 2000-01-19 | 2001-08-02 | Mannesmann Ag | Ring lift crane |
| CN2454346Y (en) * | 2000-11-29 | 2001-10-17 | 孙在鲁 | Lower-revolving self-loading type light crane |
| CN100400409C (en) * | 2005-11-15 | 2008-07-09 | 万维柔 | Hydraulic automatic balanced crane installment |
| CN103101852B (en) * | 2013-02-05 | 2015-05-06 | 苏州市职业大学 | Marine winch |
| CN103145052A (en) * | 2013-03-14 | 2013-06-12 | 辽宁抚挖重工机械股份有限公司 | Movable circular track type crane |
| CN204038912U (en) * | 2014-09-24 | 2014-12-24 | 国家电网公司 | Lifting monolock stops mechanical and electric equipment installation mechanism of hook type rotation substation |
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2014
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