CN105333136A - Roller tractor speed changing box remote-operating mechanism - Google Patents
Roller tractor speed changing box remote-operating mechanism Download PDFInfo
- Publication number
- CN105333136A CN105333136A CN201510856809.9A CN201510856809A CN105333136A CN 105333136 A CN105333136 A CN 105333136A CN 201510856809 A CN201510856809 A CN 201510856809A CN 105333136 A CN105333136 A CN 105333136A
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- China
- Prior art keywords
- shifting
- gear
- shaft
- gearshift
- shafts
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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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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H63/00—Control outputs from the control unit to change-speed- or reversing-gearings for conveying rotary motion or to other devices than the final output mechanism
- F16H63/02—Final output mechanisms therefor; Actuating means for the final output mechanisms
- F16H63/30—Constructional features of the final output mechanisms
- F16H63/3009—Constructional features of the final output mechanisms the final output mechanisms having elements remote from the gearbox
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H59/00—Control inputs to control units of change-speed-, or reversing-gearings for conveying rotary motion
- F16H59/02—Selector apparatus
- F16H59/0278—Constructional features of the selector lever, e.g. grip parts, mounting or manufacturing
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H63/00—Control outputs from the control unit to change-speed- or reversing-gearings for conveying rotary motion or to other devices than the final output mechanism
- F16H63/02—Final output mechanisms therefor; Actuating means for the final output mechanisms
- F16H63/30—Constructional features of the final output mechanisms
- F16H63/3013—Constructional features of the final output mechanisms the final output mechanism being characterised by linkages converting movement, e.g. into opposite direction by a pivoting lever linking two shift rods
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H59/00—Control inputs to control units of change-speed-, or reversing-gearings for conveying rotary motion
- F16H59/02—Selector apparatus
- F16H2059/026—Details or special features of the selector casing or lever support
- F16H2059/0269—Ball joints or spherical bearings for supporting the lever
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H63/00—Control outputs from the control unit to change-speed- or reversing-gearings for conveying rotary motion or to other devices than the final output mechanism
- F16H63/02—Final output mechanisms therefor; Actuating means for the final output mechanisms
- F16H63/30—Constructional features of the final output mechanisms
- F16H2063/3076—Selector shaft assembly, e.g. supporting, assembly or manufacturing of selector or shift shafts; Special details thereof
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H63/00—Control outputs from the control unit to change-speed- or reversing-gearings for conveying rotary motion or to other devices than the final output mechanism
- F16H63/02—Final output mechanisms therefor; Actuating means for the final output mechanisms
- F16H63/30—Constructional features of the final output mechanisms
- F16H2063/3079—Shift rod assembly, e.g. supporting, assembly or manufacturing of shift rails or rods; Special details thereof
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H63/00—Control outputs from the control unit to change-speed- or reversing-gearings for conveying rotary motion or to other devices than the final output mechanism
- F16H63/02—Final output mechanisms therefor; Actuating means for the final output mechanisms
- F16H63/30—Constructional features of the final output mechanisms
- F16H63/32—Gear shift yokes, e.g. shift forks
- F16H2063/325—Rocker or swiveling forks, i.e. the forks are pivoted in the gear case when moving the sleeve
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Gear-Shifting Mechanisms (AREA)
Abstract
The invention relates to a roller tractor speed changing box remote-operating mechanism. The roller tractor speed changing box remote-operating mechanism comprises at least two shifting fork shafts and shifting forks connected to the corresponding shifting fork shafts; the ends of the shifting fork shafts are connected with corresponding gear-shifting shifting blocks and used for shifting gear-shifting shifting heads of the gear-shifting shifting blocks to the inside of the gear-shifting shifting blocks; the gear-shifting shifting heads are connected to the far ends of gear-shifting shafts; speed changing connecting parts are disposed at the near ends of the gear-shifting shafts; the gear-shifting shafts are transversely disposed between the shifting fork shafts and gear-shifting connecting shafts; the far ends of the gear-shifting connecting shafts are connected with gear-shifting rocker arms, and the near ends of the gear-shifting connecting shafts are connected with front connecting rods; each gear-shifting rocker arm is connected with one end of the corresponding speed changing connecting part and controls the gear-shifting shafts to act; spherical hinge parts with spherical surfaces are disposed in the middles of the gear-shifting connecting shafts which can perform axial movement along mounting holes of the spherical hinge parts; spherical hinge seats with spherical holes are connected with the spherical hinge parts; the gear-shifting connecting shafts swing relative to the spherical hinge seats; the bottoms of gear-shifting rods are connected to the front ends of the front connecting rods. The roller tractor speed changing box remote-operating mechanism is simple and reasonable in structure, convenient to mount and capable of operating a gear-shifting module at the far end.
Description
Technical field
The present invention relates to a kind of wheeled tractor gearbox remote control mechanism, belong to wheeled tractor transmission technology field.
Background technique
For big-and-middle-sized wheeled tractor, for meeting the function of multiple farm work and road transport, require that tractor transmission speed ratio excursion is large, the speed ratio change of tractor is controlled by speed changer.The gear shift mechanism of current tractor is formed primarily of gear level, gear shifting pulling head and declutch shift shaft and shift fork, by the action of maneuvering and control gear level, makes to be connected to the shifting block on the gear shifting pulling head manipulation declutch shift shaft of gear level far-end, realizes the switching of gear.Along with the band of speed changer is than the continuous increase changed, because of the spatial constraints by speed changer inside, gear level can not directly be arranged near gearshift module by gearshift, and cannot realize distance control relatively far away.
Summary of the invention
The object of this invention is to provide a kind of simple and reasonable for structure, easy for installation, the wheeled tractor gearbox remote control mechanism that can handle the gearshift module of far-end.
The present invention is the technological scheme achieved the above object: a kind of wheeled tractor gearbox remote control mechanism, comprise at least two declutch shift shafts and be connected to the shift fork on each declutch shift shaft, the end of each declutch shift shaft is connected with corresponding gearshift shifting block, gear shifting pulling head for stirring each gearshift shifting block is arranged in gearshift shifting block, it is characterized in that: described gear shifting pulling head is connected to the far-end of shifting shaft, the near-end of shifting shaft is provided with speed change link, and shifting shaft is horizontal between declutch shift shaft and gearshift coupling shaft, the far-end of gearshift coupling shaft is connected with gear-shifting rocker arm, near-end is connected with front connecting rod, gear-shifting rocker arm is connected with one end of speed change link and controls shifting shaft action, the middle part of gearshift coupling shaft is provided with the ball pivot part of band sphere, and gearshift coupling shaft can move axially along the mounting hole of ball pivot part, the ball pivot seat with ball is connected with ball pivot part, gearshift coupling shaft can swing relative to ball pivot seat, the bottom of gear level is connected to the front end of front connecting rod.
Wherein: the centerline parallel of the center line of described each declutch shift shaft and gearshift coupling shaft, and the angle of the center line of shifting shaft and the center line of gearshift coupling shaft at 90 ° ± 10 °.
Described front connecting rod superior posterior has axle sleeve and by the connecting base of chamfered transition to front bottom, axle sleeve on front connecting rod be sleeved on gearshift coupling shaft on and fixed by radial peg, connecting base is provided with ball, and the bulb bottom gear level is arranged in the ball of connecting base.
Described gear-shifting rocker arm top has the bulb of axle sleeve, bottom, and the axle sleeve of gear-shifting rocker arm to be sleeved on gearshift coupling shaft and to be fixed by radial peg, and the bulb of gear-shifting rocker arm is arranged in the mounting hole of speed change link.
Described speed change link element comprise superior posterior axle sleeve and by the connecting base of chamfered transition to front bottom, the axle sleeve of speed change link to be sleeved on shifting shaft and to be fixed by radial peg, connecting base is provided with mounting hole, and the center line of described axle sleeve connects with the central axis of the mounting hole of connecting base.
The present invention adopts shifting shaft and gearshift connecting axle structure, and by horizontal for shifting shaft between declutch shift shaft and gearshift coupling shaft,, gear level by gearshift coupling shaft, gear-shifting rocker arm and speed change link be connected with shifting shaft, then change by what be connected to shifting shaft far-end the switching that shifting block realizes gear, gear level can be handled the gearshift module of far-end.The present invention's coupling shaft of shifting gears is connected with ball pivot part, gearshift coupling shaft can be moved axially along ball pivot part, and ball pivot part is arranged on ball pivot seat, when ball pivot seat is arranged on casing, make ball pivot seat as fixed support, because ball pivot part can rotate in ball pivot seat, therefore the gearshift coupling shaft be connected on ball pivot part can be swung again relative to ball pivot seat, then the action of gearshift coupling shaft is controlled by gear level, drive gear-shifting rocker arm, speed change link makes shifting shaft move axially and to rotate, can shift gears again while block selecting with the gear shifting pulling head handling shifting shaft end, structure of the present invention is simple, rationally, not by the restriction in speed changer space, gear level can be arranged in and can realize remote control gearshift away from gearshift module.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, embodiments of the invention are further described.
Fig. 1 is the structural representation of wheeled tractor gearbox remote control mechanism of the present invention.
Fig. 2 is the structural representation that ball pivot seat of the present invention and ball pivot part are arranged on gearshift coupling shaft.
Wherein: 1-shift fork, 2-declutch shift shaft, the 3-the first gearshift shifting block, 4-the second gearshift shifting block, the 5-the three gearshift shifting block, 6-gear shifting pulling head, 7-shifting shaft, 8-speed change link, 9-gear-shifting rocker arm, 10-ball pivot part, 11-ball pivot seat, 12-gearshift coupling shaft, 13-front connecting rod, 14-gear level.
Embodiment
As shown in Figure 1, wheeled tractor gearbox remote control mechanism of the present invention, the shift fork 1 comprising at least two declutch shift shafts 2 and be connected on each declutch shift shaft 2, as shown in Figure 1, three declutch shift shafts 2 can be adopted, and three shift forks 1 are arranged on respective declutch shift shaft 2, corresponding gearshift shifting block is connected with in the end of each declutch shift shaft 2, when employing three declutch shift shafts 2, corresponding declutch shift shaft 2 end is connected with the first gearshift shifting block 3, second gearshift shifting block 4 and the 3rd gearshift shifting block 5, and the gear shifting pulling head 6 for stirring each gearshift shifting block is arranged in gearshift shifting block, gear shifting pulling head 6 is driven to operate each gearshift shifting block by shifting shaft 7, carry out block selecting and gearshift.
See shown in Fig. 1,2, gear shifting pulling head 6 of the present invention is connected to the far-end of shifting shaft 7, the top of gear shifting pulling head 6 is provided with axle sleeve, bottom is provided with shifting block, to be sleeved on by the axle sleeve on gear shifting pulling head 6 on shifting shaft 7 and to be fixed by bearing pin, and is conveniently arranged on shifting shaft 7 by gear shifting pulling head 6.At the near-end of shifting shaft 7, speed change link 8 is installed, and shifting shaft 7 is horizontal between declutch shift shaft 2 and gearshift coupling shaft 12, and the shift fork 1 operated on far-end declutch shift shaft 2, the center line of each declutch shift shaft 2 of the present invention and the centerline parallel of gearshift coupling shaft 12, and the angle of the center line of the center line of shifting shaft 7 and gearshift coupling shaft 12 is at 90 ° ± 10 °, this angle can at 90 ° ± 5 °, the preferably center line of shifting shaft 7 and the central axis of declutch shift shaft 2 center line and coupling shaft 12 of shifting gears, to keep synchronization motion.
As shown in Figure 1, the present invention shifts gears, and the far-end of coupling shaft 12 is connected with gear-shifting rocker arm 9, near-end is connected with front connecting rod 13, gear-shifting rocker arm 9 is connected with one end of speed change link 8 and controls shifting shaft 7 action, it is of the present invention that gear-shifting rocker arm 9 top has axle sleeve, bottom has bulb, axle sleeve on gear-shifting rocker arm 9 be sleeved on gearshift coupling shaft 12 on and fixed by radial peg, convenient being arranged on by gear-shifting rocker arm 9 is shifted gears on coupling shaft 12, and the bulb of gear-shifting rocker arm 9 is then arranged in the mounting hole of front connecting rod.As shown in Figure 1, speed change link 8 of the present invention also comprise superior posterior axle sleeve and by the connecting base of chamfered transition to front bottom, the axle sleeve of speed change link 8 to be sleeved on gearshift coupling shaft 12 and to be fixed by radial peg, connecting base is provided with mounting hole, the center line of axle sleeve and the mounting hole vertical and intersectant centerline of connecting base.
See Fig. 1, shown in 2, the shift gears middle part of coupling shaft 12 of the present invention is provided with the ball pivot part 10 of band sphere, gearshift coupling shaft 12 can move axially along the mounting hole of ball pivot part 10, the ball pivot seat 11 with ball is connected with ball pivot part 10, gearshift coupling shaft 12 can swing relative to ball pivot seat 11, ball pivot seat 11 can be arranged on gearbox by the present invention, because ball pivot part 10 can rotate in ball pivot seat 11, therefore gearshift coupling shaft 12 can be swung for fulcrum with ball pivot seat 11, the bottom of gear level 14 is connected to the front end of front connecting rod 13, as shown in Figure 1, front connecting rod 13 superior posterior of the present invention has axle sleeve and by the connecting base of chamfered transition to front bottom, axle sleeve on front connecting rod 13 be sleeved on gearshift coupling shaft 12 on and fixed by radial peg, connecting base is provided with ball, bulb bottom gear level 14 is arranged in the ball of connecting base, driven front connecting rod 13 action by gear level 14 and carry out selection and the switching of gear.The top of gear level 14 of the present invention also has variable speed operation handle, controls gear level 14 action by handling variable speed operation handle.
As shown in Figure 1, driver pull speed-changing operating handle drive gear level 14 as shown in Figure 1 left and right directions swing time, then stir front connecting rod 13 also to swing, make to be connected to gearshift coupling shaft 12 on front connecting rod 13 using ball pivot seat 11 as fixed support, ball pivot part 10 is rotated in ball pivot seat 11, thus make gearshift coupling shaft 12 with ball pivot seat 11 for a spot wobble, the gear-shifting rocker arm 9 of gearshift coupling shaft 12 far-end is vacillated now to the left, now to the right, then drive speed change link 8 and shifting shaft 7 to move axially, the gear shifting pulling head 6 being arranged on shifting shaft 7 far-end moves vertically simultaneously; As shown in Figure 1, when gear level 14 swing, drive front connecting rod 13 and move with fore-and-aft direction while of gearshift coupling shaft 12, the mounting hole of gearshift coupling shaft 12 in the middle of ball pivot part 10 is slid axially, the gear-shifting rocker arm 9 of gearshift coupling shaft 12 far-end also moves with gearshift coupling shaft 12 fore-and-aft direction, and drive the front end edge fore-and-aft direction of speed change link 8 to swing, shifting shaft 7 is rotated, the gear shifting pulling head 6 being arranged on shifting shaft 7 end swings along with the swing of shifting shaft 7, thus gear shifting pulling head 6 can be shifted gears again while block selecting.
Claims (5)
1. a wheeled tractor gearbox remote control mechanism, comprise at least two declutch shift shafts (2) and be connected to the shift fork (1) on each declutch shift shaft (2), the end of each declutch shift shaft (2) is connected with corresponding gearshift shifting block, gear shifting pulling head (6) for stirring each gearshift shifting block is arranged in gearshift shifting block, it is characterized in that: described gear shifting pulling head (6) is connected to the far-end of shifting shaft (7), the near-end of shifting shaft (7) is provided with speed change link (8), and shifting shaft (7) is horizontal between declutch shift shaft (2) and gearshift coupling shaft (12), the far-end of gearshift coupling shaft (12) is connected with gear-shifting rocker arm (9), near-end is connected with front connecting rod (13), gear-shifting rocker arm (9) is connected with one end of speed change link (8) and controls shifting shaft (7) action, the middle part of gearshift coupling shaft (12) is provided with the ball pivot part (10) of band sphere, and gearshift coupling shaft (12) can move axially along the mounting hole of ball pivot part (10), the ball pivot seat (11) with ball is connected with ball pivot part (10), gearshift coupling shaft (12) can swing relative to ball pivot seat (11), the bottom of gear level (14) is connected to the front end of front connecting rod (13).
2. wheeled tractor gearbox remote control mechanism according to claim 1, it is characterized in that: the center line of described each declutch shift shaft (2) and the centerline parallel of gearshift coupling shaft (12), and the angle of the center line of the center line of shifting shaft (7) and gearshift coupling shaft (12) is at 90 ° ± 10 °.
3. wheeled tractor gearbox remote control mechanism according to claim 1, it is characterized in that: described front connecting rod (13) superior posterior has axle sleeve and by the connecting base of chamfered transition to front bottom, axle sleeve on front connecting rod (13) is sleeved on gearshift coupling shaft (12) and goes up and fixed by radial peg, connecting base is provided with ball, and the bulb of gear level (14) bottom is arranged in the ball of connecting base.
4. wheeled tractor gearbox remote control mechanism according to claim 1, it is characterized in that: described gear-shifting rocker arm (9) top has the bulb of axle sleeve, bottom, the axle sleeve of gear-shifting rocker arm (9) is sleeved on gearshift coupling shaft (12) and goes up and fixed by radial peg, and the bulb of gear-shifting rocker arm (9) is arranged in the mounting hole of speed change link (8).
5. the wheeled tractor gearbox remote control mechanism according to claim 1 or 4, it is characterized in that: described speed change link (8) part comprise superior posterior axle sleeve and by the connecting base of chamfered transition to front bottom, the axle sleeve of speed change link (8) is sleeved on shifting shaft (7) and goes up and fixed by radial peg, connecting base is provided with mounting hole, and the center line of described axle sleeve connects with the central axis of the mounting hole of connecting base.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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CN201510856809.9A CN105333136B (en) | 2015-11-30 | 2015-11-30 | Wheeled tractor gearbox remote control mechanism |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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CN201510856809.9A CN105333136B (en) | 2015-11-30 | 2015-11-30 | Wheeled tractor gearbox remote control mechanism |
Publications (2)
Publication Number | Publication Date |
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CN105333136A true CN105333136A (en) | 2016-02-17 |
CN105333136B CN105333136B (en) | 2017-12-29 |
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Family Applications (1)
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CN201510856809.9A Active CN105333136B (en) | 2015-11-30 | 2015-11-30 | Wheeled tractor gearbox remote control mechanism |
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CN (1) | CN105333136B (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN114026354A (en) * | 2019-04-04 | 2022-02-08 | 雷诺股份公司 | Intermediate shift arm |
CN114251450A (en) * | 2022-01-25 | 2022-03-29 | 潍柴雷沃重工股份有限公司 | Two shift fork gear shifting structures, gearbox and vehicle |
Citations (6)
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CN200968412Y (en) * | 2006-05-25 | 2007-10-31 | 唐山爱信齿轮有限责任公司 | Control device for automobile speed variator |
CN201129447Y (en) * | 2007-11-22 | 2008-10-08 | 苑凤山 | Combined variable speed control mechanism |
CN202507931U (en) * | 2012-03-15 | 2012-10-31 | 唐山爱信齿轮有限责任公司 | Remote handling device for manual speed changer |
CN103115141A (en) * | 2011-11-16 | 2013-05-22 | 北汽福田汽车股份有限公司 | Single-rod speed change control mechanism and speed changer and right rudder vehicle |
DE102011087332A1 (en) * | 2011-11-29 | 2013-05-29 | Bayerische Motoren Werke Aktiengesellschaft | Shift lever arrangement for vehicle, has actuating element that is provided for pivotal movement of shift lever at specific angle for selecting shift track, and for pivotal movement of actuating rod around specific angle |
CN205155123U (en) * | 2015-11-30 | 2016-04-13 | 常州东风农机集团有限公司 | Long -range operating mechanism of wheeled tractor gearbox |
-
2015
- 2015-11-30 CN CN201510856809.9A patent/CN105333136B/en active Active
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
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CN200968412Y (en) * | 2006-05-25 | 2007-10-31 | 唐山爱信齿轮有限责任公司 | Control device for automobile speed variator |
CN201129447Y (en) * | 2007-11-22 | 2008-10-08 | 苑凤山 | Combined variable speed control mechanism |
CN103115141A (en) * | 2011-11-16 | 2013-05-22 | 北汽福田汽车股份有限公司 | Single-rod speed change control mechanism and speed changer and right rudder vehicle |
DE102011087332A1 (en) * | 2011-11-29 | 2013-05-29 | Bayerische Motoren Werke Aktiengesellschaft | Shift lever arrangement for vehicle, has actuating element that is provided for pivotal movement of shift lever at specific angle for selecting shift track, and for pivotal movement of actuating rod around specific angle |
CN202507931U (en) * | 2012-03-15 | 2012-10-31 | 唐山爱信齿轮有限责任公司 | Remote handling device for manual speed changer |
CN205155123U (en) * | 2015-11-30 | 2016-04-13 | 常州东风农机集团有限公司 | Long -range operating mechanism of wheeled tractor gearbox |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN114026354A (en) * | 2019-04-04 | 2022-02-08 | 雷诺股份公司 | Intermediate shift arm |
US11725728B2 (en) | 2019-04-04 | 2023-08-15 | Renault S.A.S. | Intermediate gearshift arm |
CN114251450A (en) * | 2022-01-25 | 2022-03-29 | 潍柴雷沃重工股份有限公司 | Two shift fork gear shifting structures, gearbox and vehicle |
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