CN104722684A - Full-automatic anchor cable line cutting equipment - Google Patents
Full-automatic anchor cable line cutting equipment Download PDFInfo
- Publication number
- CN104722684A CN104722684A CN201510159693.3A CN201510159693A CN104722684A CN 104722684 A CN104722684 A CN 104722684A CN 201510159693 A CN201510159693 A CN 201510159693A CN 104722684 A CN104722684 A CN 104722684A
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- China
- Prior art keywords
- cutting
- anchor cable
- cylinder
- limit switch
- piston rod
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- 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.)
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21F—WORKING OR PROCESSING OF METAL WIRE
- B21F11/00—Cutting wire
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21F—WORKING OR PROCESSING OF METAL WIRE
- B21F23/00—Feeding wire in wire-working machines or apparatus
Abstract
The invention discloses full-automatic anchor cable line cutting equipment. The full-automatic anchor cable line cutting equipment comprises a drive rack, a drive device is installed at the bottom of the drive rack, a speed reducer output shaft of the drive device is connected with a driving wheel, a driven wheel is installed on the top of the drive rack, an abrasive wheel cutting machine is installed on a cutting rack and is fixedly installed on the cutting rack through a supporting frame of the abrasive wheel cutting machine, and a motor base of the abrasive wheel cutting machine is connected with a piston rod of a cutting air cylinder through a connecting rod in a rotating mode; a stop iron I and a stop iron II are installed on the side faces of a shifting fork of the piston rod of the cutting air cylinder, and a limiting switch SQ4 and a limiting switch SQ3 are installed on the stop iron I and under the stop iron II respectively. The cutting air cylinder is connected with a solenoid valve YA1 installed in an electronic control system container through an air pipe, and the limiting switch SQ4 and the limiting switch SQ3 are connected with the electronic control system through guide wires respectively. According to the full-automatic anchor cable line cutting equipment, the direction of airflow in the cutting air cylinder is changed through the solenoid valve, so the piston rod of the air cylinder can stretch out and draw back, an anchor cable line can be cut automatically, and working efficiency is improved.
Description
Technical field
The present invention relates to a kind of anchor cable cutting technique, particularly a kind of fully automatic anchor cable linear cutting equipment.
Background technology
In as large in Tunnel Pressure in coal mine roadway tunneling process, roof cracking situation, alone suspension roof support top board is difficult to prove effective, and also must carry out Strengthening Roof with anchor cable, anchor cable anchor layer be anchored in stable rock stratum, top board deep.Therefore, the use amount of anchor cable is very large.The method of tradition cutting anchor cable adopts manually by the method for abrasive wheel cutting machine cutting, and in the process of cutting anchor cable, the links such as dilatory anchor cable, cutting anchor cable all use artificial realization.The method of this kind of cutting anchor cable causes productive labor intensity large, and inefficiency, operation easier is large, and potential safety hazard is many.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of fully automatic anchor cable linear cutting equipment, and this equipment automatically can enter, cuts, unload anchor cable, increases work efficiency, and safe and reliable.
For achieving the above object, the invention provides following technical scheme: fully automatic anchor cable linear cutting equipment, comprise cover plate, drive chassis, cutting frame, unloading rack, electric-control system, pneumatic control system, described cover plate, unloading rack is fixed on ground, described drive chassis, cutting frame is welded on the steel plate on ground, and cover plate, drive chassis, cutting frame, unloading rack is arranged in a linear, drive unit is installed in the bottom of described drive chassis, the speed reducer output shaft of drive unit connects a driving wheel, a driven pulley is installed by two slide bars welded on it in the top of drive chassis, the nut that gap between driving wheel and driven pulley puts by regulating sliding pole axis, and driving wheel, driven pulley, driven pulley slide bar is positioned at same vertical plane, described cutting frame installs abrasive wheel cutting machine, abrasive wheel cutting machine is fixedly installed on cutting frame by its bracing frame, cutting cylinder is fixed on the bottom of the cutting frame near abrasive wheel cutting machine motor base side, and the motor base of abrasive wheel cutting machine is connected by the piston rod rotation of connecting rod with cutting cylinder, the piston rod fork side of cutting cylinder is provided with buting iron I and buting iron II, buting iron I distinguishes mounting limit switch S Q4 and SQ3 above and below buting iron II, limit switch SQ4 is installed on the lateral protection cover steel plate of cutting cylinder, and the push rod that cutting cylinder piston rod reaches limit switch SQ4 when abrasive wheel cutting machine drops to extreme position contacts with buting iron I, limit switch SQ3 is installed on the fixed head of cutting cylinder, and when cutting cylinder piston rod is all retracted, the push rod of limit switch SQ3 contacts with buting iron II, the two ends up and down of cutting cylinder are respectively equipped with air inlet and gas outlet, inlet, outlet is connected with the magnetic valve YA1 be installed in electric-control system container respectively by tracheae, and magnetic valve YA1 is connected with the pressure-reducing valve I be installed in pneumatic control system container by tracheae, limit switch SQ4 with SQ3 is connected with electric-control system respectively by wire.
Preferably, a hinged V-arrangement slideway on unloading rack, and the bottom in the middle of unloading rack is provided with discharging cylinder, the piston rod of discharging cylinder and a side of V-arrangement slideway are rotationally connected, the end of described V-arrangement slideway is provided with limit switch SQ1, the piston rod fork pin of discharging cylinder is provided with buting iron III, limit switch SQ2 is installed on the fixed head of discharging cylinder, and the push rod of discharging cylinder piston rod limit switch SQ2 when all retracting and buting iron III contact position place, entering of described discharging cylinder, gas outlet is connected with the magnetic valve YA2 in electric-control system container respectively by tracheae, and magnetic valve YA2 is connected with the pressure-reducing valve II be installed in pneumatic control system container by tracheae, limit switch SQ1 with SQ2 is connected with electric-control system respectively by wire.
Preferably, drive chassis fixedly mounts stop collar near one end of unloading rack, the dead in line of two stop collars respectively near one end of dish cover and cutting frame, and the dead in line of the center line that projects at horizontal plane of driving wheel and driven pulley and two stop collars.
Preferably, a chip collecting box is also fixed on the ground being positioned at abrasive wheel cutting machine place, the opening of chip collecting box is facing to the cutting face of emery wheel, and the end opening of chip collecting box places a basin.
Preferably, be positioned at the ground fan attachment of cutting frame away from one end of chip collecting box, the covering of the fan of described fan is towards the emery wheel of abrasive wheel cutting machine, and described chip collecting box, fan, abrasive wheel cutting machine are located along the same line.
Preferably, carrying roller is provided with between drive chassis and cover plate.
Preferably, the end of V-arrangement slideway is also provided with gag lever post, gag lever post is provided with fixed head, V-arrangement slideway is welded with nut by subterminal side, gag lever post coordinates the nut of V-arrangement ways-end side and V-arrangement slideway to fix by the bolt on fixed head, and gag lever post has Compress Spring near one end of cutting frame cover.
Adopt technique scheme, realize being put in place by the auto-feed of Stroke Control anchor cable, the object of surface trimming, automatic discharging, the inlet, outlet flow path direction changing cylinder by magnetic valve realizes cylinder piston rod and stretches, thus realizes surface trimming and automatic discharging.Present invention achieves the auto-feed of anchor cable, cutting, discharging, improve operating efficiency.
Accompanying drawing explanation
Fig. 1 is the structural representation of the main apparent direction of the present invention;
Fig. 2 is the structural representation that the present invention overlooks direction;
Fig. 3 is electrical schematic diagram of the present invention;
Wherein, 1. cover plate 2. drive chassis 3. cutting frame 4. unloading rack 5. drive unit 6. driving wheel 7. driven pulley 8. abrasive wheel cutting machine 9. cuts cylinder 10.V shape slideway 11. discharging cylinder 12. stop collar 13. chip collecting box 14. fan 15. gag lever post 16. carrying roller.
Detailed description of the invention
Below in conjunction with accompanying drawing, by the description to embodiment, the present invention will be further described:
As Fig. 1, shown in 2, fully automatic anchor cable linear cutting equipment of the present invention, comprise cover plate 1, drive chassis 2, cutting frame 3, unloading rack 4, electric-control system, pneumatic control system, cover plate 1, unloading rack 4 is fixed on ground, drive chassis 2, cutting frame 3 is welded on the steel plate on ground, and cover plate 1, drive chassis 2, cutting frame 3, unloading rack 4 is arranged in a linear, carrying roller 16 is provided with between drive chassis 2 and cover plate 1, be used for consigning anchor cable, drive unit 5 is installed in the bottom of drive chassis 2, the speed reducer output shaft of drive unit 5 connects a driving wheel 6, a driven pulley 7 is installed by two slide bars welded on it in the top of drive chassis 2, the nut that gap between driving wheel 6 and driven pulley 6 puts by regulating sliding pole axis, and driving wheel 6, driven pulley 7, driven pulley slide bar is positioned at same vertical plane, cutting frame 3 is installed abrasive wheel cutting machine 8, abrasive wheel cutting machine 8 is fixedly installed on cutting frame 3 by its bracing frame, cutting cylinder 9 is fixed on the bottom of the cutting frame 3 near abrasive wheel cutting machine 8 motor base side, and the motor base of abrasive wheel cutting machine 8 is connected by the piston rod rotation of connecting rod with cutting cylinder 9, the piston rod fork side of cutting cylinder 9 is provided with buting iron I and buting iron II, buting iron I distinguishes mounting limit switch S Q4 and SQ3 above and below buting iron II, limit switch SQ4 is installed on the lateral protection cover steel plate of cutting cylinder 9, and cutting cylinder 9 piston rod reaches push rod and the buting iron I contact position place of limit switch SQ4 when abrasive wheel cutting machine drops to extreme position, in order to guarantee that anchor cable is cut off rear abrasive wheel cutting machine 8 completely and just can be lifted and the maximum utilization of grinding wheel, limit switch SQ3 is installed on the fixed head of cutting cylinder 9, and cut push rod and the buting iron II contact position place of limit switch SQ3 when cylinder 9 piston rod is all retracted, in order to guarantee that abrasive wheel cutting machine 8 just can enter anchor cable after rising completely, prevent anchor cable from breaking cutoff wheel, the two ends up and down of cutting cylinder 9 are respectively equipped with air inlet and gas outlet, inlet, outlet is connected with the magnetic valve YA1 be installed in electric-control system container respectively by tracheae, and magnetic valve YA1 is connected with the pressure-reducing valve I be installed in pneumatic control system container by tracheae, limit switch SQ4 with SQ3 is connected with electric-control system respectively by wire, a hinged V-arrangement slideway 10 on unloading rack 4, and the bottom in the middle of unloading rack 4 is provided with discharging cylinder 11, the piston rod of discharging cylinder 11 and a side of V-arrangement slideway 10 are rotationally connected, the end of V-arrangement slideway 10 is provided with limit switch SQ1, the piston rod fork pin of discharging cylinder 11 is provided with buting iron III, limit switch SQ2 is installed on the fixed head of discharging cylinder 11, and the push rod of discharging cylinder 11 piston rod limit switch SQ2 when all retracting and buting iron III contact position place, in order to guarantee that V-arrangement slideway 10 level just must can enter anchor cable, entering of discharging cylinder 11, gas outlet is connected with the magnetic valve YA2 in electric-control system container respectively by tracheae, and magnetic valve YA2 is connected with the pressure-reducing valve II be installed in pneumatic control system container by tracheae, limit switch SQ1 with SQ2 is connected with electric-control system respectively by wire, the piston rod of discharging cylinder 11 and another side of V-arrangement slideway 10 also can be rotationally connected, and realize unloading rack 4 both sides discharging.
For ensureing the stability that anchor cable is advanced, drive chassis 2 fixedly mounts stop collar 12 near one end of dish cover 1 and cutting frame 3 respectively near one end of unloading rack 4, the dead in line of two stop collars 12, and the dead in line of the center line that projects at horizontal plane of driving wheel 6 and driven pulley 7 and two stop collars 12, a chip collecting box 13 is also fixed on the ground being positioned at abrasive wheel cutting machine 8 place, the opening of chip collecting box 13 faces toward the cutting face of emery wheel, the chip produced during cutting can be collected, the collecting box of chip simultaneously 13 is placed a basin by its end opening and is caught dirt and cooling.Fixedly mount a fan 14 being positioned at the ground of cutting frame 3 away from one end of chip collecting box 13, and make the covering of the fan of fan 14 towards the emery wheel of abrasive wheel cutting machine 8, and chip collecting box 13, fan 14, abrasive wheel cutting machine 8 are located along the same line, the smog produced when grinding wheel being cut when fan 14 works anchor cable dispels and blows away, and is blowed in chip collecting box by Mars simultaneously.
In addition, at the end of V-arrangement slideway 10, a gag lever post 15 is installed, gag lever post 15 is fixed by the fixed head on it and the nut bolt and V-arrangement slideway 10 being welded on V-arrangement slideway 10 side, use the gag lever post 15 of different length can cut different size model anchor cable, simultaneously, gag lever post 15 has Compress Spring near one end of cutting frame 8 cover, resets in time in order to help the back-moving spring of limit switch SQ1 after anchor cable is laid down.
Before cutting, first with fork truck, anchor cable drum is loaded in cover plate 1, plug pin, cut strapping, then from drum inner ring artificial haul out anchor cable and frame on carrying roller 16, successively anchor cable is penetrated the stop collar 12 in drive chassis 2, the gap between driving wheel 6 and driven pulley 7, the stop collar 12 of cutting frame 3 near unloading rack 4 side, tightens the nut that driven pulley 7 sliding pole axis puts, open pneumatic control system main valve, pressure-reducing valve I and II is adjusted respectively at 0.12Mpa and 0.1Mpa.As shown in Figure 3, power turn-on switch QF, press starting button SB2 and SB5, the coil of contactor KM1 obtains electric and self-locking, the main contacts of KM1 closes, the coil of contactor KM3 obtains electric and self-locking, the main contacts of KM3 closes, cutting motor M2 starting operation, simultaneously, because the break contact of SQ1 closes, SQ2, the moving together contact of SQ3 closes, the coil of contactor KM2 and the coil of time relay KT1 in succession electric, the main contacts of KM2 closes, drive motors M1 starting operation, anchor cable is driven to advance along V-type slideway 10, the moving together contact that KT1 time delay disconnects is instantaneous closed.When anchor cable run to contact with the push rod of gag lever post 15 or SQ1 time, gag lever post 15 or anchor cable encounter the push rod of SQ1, and the break contact of SQ1 disconnects, the coil losing electricity of KM2 and KT1, the main contacts of KM2 disconnects, M1 stall, KT1 coil losing electricity trigger, meanwhile, the dynamic circuit breaker auxiliary contact of KM2 and the moving together contact of SQ1 close, and the coil of magnetic valve YA1 obtains electric, the lower end air inlet of cutting cylinder 9, give vent to anger in upper end, its piston rod stretches out, and abrasive wheel cutting machine 8 declines and cuts anchor cable.When cut the piston rod of cylinder 9 reach abrasive wheel cutting machine drop to extreme position time, on the one hand after KT1 arrives the time of adjusting in advance, the moving together contact that its time delay disconnects disconnects, the coil losing electricity of magnetic valve YA1, give vent to anger in cutting cylinder 9 lower end, upper end air inlet, its piston rod is retracted, and abrasive wheel cutting machine 8 rises; Buting iron I encounters the push rod of SQ4 on the other hand, the moving together contact of SQ4 closes, the coil of KT2 obtains electric, the moving together contact that its time delay disconnects closes, and the coil of magnetic valve YA2 obtains electric, discharging cylinder 11 lower end air inlet, give vent to anger in upper end, its piston rod stretches out, and pushes over V-type slideway 8, and anchor cable skids off outside unloading rack 4 under Gravitative Loads.After KT2 arrives the time of adjusting in advance, when namely anchor cable is laid down, the moving together contact that its time delay disconnects disconnects, magnetic valve YA2 coil losing electricity, discharging cylinder 11 upper end air inlet, give vent to anger in lower end, its piston rod is retracted, and draws positive V-type slideway 10, for the cutting of next root anchor cable is prepared.
Press stop button SB1, drive motors M1 stall.Press stop button SB4, cutting motor M2 stall.Press starting button SB8, the coil of contactor KM4 obtains electric and self-locking, and the main contacts of KM4 closes, and fan electromotor M3 starting operation, presses stop button SB7, fan electromotor M3 stall.
Motor M 1 of the present invention is drive motors 5, and motor M 2 is the motor of abrasive wheel cutting machine, and motor M 3 is the motor of fan.
The air pressure that the present invention cuts cylinder should control at 0.12Mpa, and the air pressure of discharging cylinder should control at 0.1Mpa.
Above-described is only the preferred embodiment of the present invention, it should be pointed out that for the person of ordinary skill of the art, and without departing from the concept of the premise of the invention, can also make some distortion and improvement, these all belong to protection scope of the present invention.
Claims (7)
1. a fully automatic anchor cable linear cutting equipment, comprise cover plate (1), drive chassis (2), cutting frame (3), unloading rack (4), electric-control system, pneumatic control system, described cover plate (1), unloading rack (4) is fixed on ground, described drive chassis (2), cutting frame (3) is welded on the steel plate on ground, and cover plate (1), drive chassis (2), cutting frame (3), unloading rack (4) is arranged in a linear, it is characterized in that: drive unit (5) is installed in the bottom of described drive chassis (2), the speed reducer output shaft of drive unit (5) connects a driving wheel (6), a driven pulley (7) is installed by two slide bars welded on it in the top of drive chassis (2), the nut that gap between driving wheel (6) and driven pulley (7) puts by regulating sliding pole axis, and driving wheel (6), driven pulley (7), driven pulley slide bar is positioned at same vertical plane, described cutting frame (3) is installed abrasive wheel cutting machine (8), abrasive wheel cutting machine (8) is fixedly installed on cutting frame (3) by its bracing frame, be fixed with cutting cylinder (9) near the bottom of the cutting frame (3) of abrasive wheel cutting machine (8) motor base side, the motor base of abrasive wheel cutting machine (8) is connected by the piston rod rotation of connecting rod with cutting cylinder (9), the piston rod fork side of cutting cylinder (9) is provided with buting iron I and buting iron II, buting iron I distinguishes mounting limit switch S Q4 and SQ3 above and below buting iron II, limit switch SQ4 is installed on the lateral protection cover steel plate of cutting cylinder (9), and the push rod that cutting cylinder (9) piston rod reaches limit switch SQ4 when abrasive wheel cutting machine drops to extreme position contacts with buting iron I, limit switch SQ3 is installed on the fixed head of cutting cylinder (9), and when cutting cylinder (9) piston rod is all retracted, the push rod of limit switch SQ3 contacts with buting iron II, the two ends up and down of cutting cylinder (9) are respectively equipped with air inlet and gas outlet, inlet, outlet is connected with the magnetic valve YA1 be installed in electric-control system container respectively by tracheae, and magnetic valve YA1 is connected with the pressure-reducing valve I be installed in pneumatic control system container by tracheae, limit switch SQ4 with SQ3 is connected with electric-control system respectively by wire.
2. fully automatic anchor cable linear cutting equipment according to claim 1, it is characterized in that: the upper hinged V-arrangement slideway (10) of described unloading rack (4), and the bottom in the middle of unloading rack (4) is provided with discharging cylinder (11), the piston rod of discharging cylinder (11) and a side of V-arrangement slideway (10) are rotationally connected, the end of described V-arrangement slideway (10) is provided with limit switch SQ1, the piston rod fork pin of discharging cylinder (11) is provided with buting iron III, limit switch SQ2 is installed on the fixed head of discharging cylinder (11), and the push rod of discharging cylinder (11) piston rod limit switch SQ2 when all retracting contacts with buting iron III, entering of described discharging cylinder, gas outlet is connected with the magnetic valve YA2 in electric-control system container respectively by tracheae, and magnetic valve YA2 is connected with the pressure-reducing valve II be installed in pneumatic control system container by tracheae, limit switch SQ1 with SQ2 is connected with electric-control system respectively by wire.
3. fully automatic anchor cable linear cutting equipment according to claim 2, it is characterized in that: described drive chassis (2) fixedly mounts stop collar (12) near one end of dish cover (1) and cutting frame (3) respectively near one end of unloading rack (4), the dead in line of two stop collars (12), and the dead in line of the center line that projects at horizontal plane of driving wheel (6) and driven pulley (7) and two stop collars (12).
4. fully automatic anchor cable linear cutting equipment according to claim 3, it is characterized in that: described in be positioned at abrasive wheel cutting machine (8) place ground on also fix a chip collecting box (13), the opening of chip collecting box (13) faces toward the cutting face of emery wheel, and the end opening of chip collecting box (13) places a basin.
5. fully automatic anchor cable linear cutting equipment according to claim 4, it is characterized in that: described in be positioned at the ground fan attachment (14) of cutting frame (3) away from one end of chip collecting box (13), the covering of the fan of described fan (14) is towards the emery wheel of abrasive wheel cutting machine (8), and described chip collecting box (13), fan (14), abrasive wheel cutting machine (8) are located along the same line.
6. fully automatic anchor cable linear cutting equipment according to claim 1, is characterized in that: be provided with carrying roller 16 between described drive chassis (2) and cover plate (1).
7. fully automatic anchor cable linear cutting equipment according to claim 2, it is characterized in that: the end of described V-arrangement slideway (10) is also provided with gag lever post (15), gag lever post (15) is provided with fixed head, V-arrangement slideway (10) is welded with nut by subterminal side, gag lever post (15) coordinates the nut of V-arrangement slideway (10) end side and V-arrangement slideway (10) to fix by the bolt on fixed head, and gag lever post (15) has Compress Spring near one end of cutting frame (8) cover.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510159693.3A CN104722684B (en) | 2015-04-03 | 2015-04-03 | A kind of fully automatic anchor cable linear cutting equipment |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510159693.3A CN104722684B (en) | 2015-04-03 | 2015-04-03 | A kind of fully automatic anchor cable linear cutting equipment |
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| CN104722684A true CN104722684A (en) | 2015-06-24 |
| CN104722684B CN104722684B (en) | 2016-08-17 |
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| CN201510159693.3A Active CN104722684B (en) | 2015-04-03 | 2015-04-03 | A kind of fully automatic anchor cable linear cutting equipment |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106801615A (en) * | 2017-02-22 | 2017-06-06 | 河南工程学院 | A kind of collection protection device for anchor cable in tunnel |
| CN106976003A (en) * | 2017-04-06 | 2017-07-25 | 盐城工学院 | A kind of electrified surface trimming steel plate equipment |
| CN110253085A (en) * | 2019-06-27 | 2019-09-20 | 临沂矿业集团菏泽煤电有限公司 | A kind of anchor cable automatic cutting equipment |
| CN111847089A (en) * | 2019-04-29 | 2020-10-30 | 国家能源投资集团有限责任公司 | Semi-automatic anchor cable wire paying-off cutting process |
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| CN204700209U (en) * | 2015-04-03 | 2015-10-14 | 国投新集能源股份有限公司 | A kind of fully automatic anchor cable linear cutting equipment |
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| JPS6368234A (en) * | 1986-09-08 | 1988-03-28 | Asahi Okuma Ind Co Ltd | Adjusting device for wire rod sending rate in wire rod cutting in pressing machine |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106801615A (en) * | 2017-02-22 | 2017-06-06 | 河南工程学院 | A kind of collection protection device for anchor cable in tunnel |
| CN106976003A (en) * | 2017-04-06 | 2017-07-25 | 盐城工学院 | A kind of electrified surface trimming steel plate equipment |
| CN111847089A (en) * | 2019-04-29 | 2020-10-30 | 国家能源投资集团有限责任公司 | Semi-automatic anchor cable wire paying-off cutting process |
| CN110253085A (en) * | 2019-06-27 | 2019-09-20 | 临沂矿业集团菏泽煤电有限公司 | A kind of anchor cable automatic cutting equipment |
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| CN104722684B (en) | 2016-08-17 |
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