Feed mixing equipment for livestock breeding

Abstract

The utility model relates to the technical field of livestock breeding, in particular to feed mixing equipment for livestock breeding, which comprises a mixing box, a bottom cover is movably arranged at the bottom of the mixing box, a stirring rod is arranged in the mixing box, a driving mechanism is arranged at the top of the mixing box, and the stirring rod is in driving connection with the driving mechanism. A plurality of material storage boxes are fixedly mounted at the top of the mixing box, the bottom ends of the material storage boxes are communicated with the interior of the mixing box, rotating rods are rotatably mounted at the bottoms of the material storage boxes, driving grooves are formed in the outer surfaces of the rotating rods, and a reducing mechanism is coaxially arranged at one end of each rotating rod; the feeding device has the beneficial effects that the reducing mechanism is arranged at one end of the rotating rod and is in driving connection with the driving mechanism, and the rotating speed of the rotating rod can be changed along with the change of the diameter of the reducing mechanism, so that the discharging speed of the plurality of storage boxes can be controlled, and the effect of accurately controlling the discharging quantity of each storage box can be achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of livestock breeding, in particular to a feed mixing device for livestock breeding. Background Art

[0002] When feeding livestock, farmers will make their own nutritious feed for them. The nutrients contained in the homemade feed must be balanced and the same. During the preparation process, multiple feeds must be mixed evenly. If they are not mixed evenly, it will affect the feeding effect at the least, and in severe cases it will cause the livestock to become sick, poisoned, or even die.

[0003] Chinese patent document CN 112007546A discloses a premixing and stirring device for livestock breeding, comprising a weighing structure, a box structure, and a stirring structure. The box structure is provided with a weighing structure above and a stirring structure inside. The weighing structure ensures the accuracy of the weight of the input feed, and the stirring structure fully and evenly mixes the various feeds in the box. A draw plate is provided on the side of the weigher to facilitate the direct entry of the feed weighed by the weigher into the box, which is easy to operate. The weigher is connected to the feed inlet by an inclined surface, so that the weighed feed can be quickly dropped into the box. The feed inlet is provided with a second sealing cover to effectively prevent the feed from splashing during stirring. A moisture-proof pad is fixedly installed under the motor to prevent the motor from being damp and shortening its service life. A sealing device is provided at the connection between the motor and the box to ensure that no feed falls into the motor at the connection, thereby preventing the motor from affecting its operation. The stirring rod is provided with blades, which are spirally distributed on the stirring rod to break up large particles of uncrushed feed to prevent livestock from swallowing and suffocating, and also to provide a longitudinal stirring effect.

[0004] Although the above disclosed device can accurately weigh the feed raw materials to be prepared, in actual operation, it is necessary to add the materials one by one, which is cumbersome and greatly reduces work efficiency.

[0005] Therefore, a kind of livestock raising feed mixing equipment is needed to solve the above problems. Utility Model Content

[0006] In order to solve the above problem, that is, to solve the problem that the existing feed mixing equipment needs to add the same materials and is cumbersome to operate, the utility model provides a feed mixing equipment for livestock breeding.

[0007] The mixing device for livestock feed comprises a mixing box, wherein the bottom of the mixing box is movably provided with a bottom cover, the interior of the mixing box is provided with a stirring rod, the top of the mixing box is provided with a driving mechanism, the stirring rod is drivably connected to the driving mechanism, a plurality of storage boxes are fixedly installed on the top of the mixing box, the bottom end of the storage box is connected with the interior of the mixing box, the bottom of the storage box is rotatably installed with a rotating rod, the outer surface of the rotating rod is provided with a driving groove, one end of the rotating rod is coaxially provided with a reducing mechanism, the reducing mechanism is drivably connected to the driving mechanism, an oblique ring is fixedly installed on the inner surface of the mixing box, and the oblique ring is located just below the bottom outlet of the storage box; by arranging A reducing mechanism is provided, and the reducing mechanism is connected to the driving mechanism. As the diameter of the reducing mechanism changes, the rotation speed of the rotating rod can be changed, thereby controlling the unloading speed of multiple storage boxes, and accurately controlling the unloading amount of each storage box; by connecting the reducing mechanism and the stirring rod to the driving mechanism, the driving mechanism can drive the stirring rod to rotate while driving the rotating rod to unload the material, thereby saving energy; by arranging an inclined ring on the inner surface of the mixing box, and making the inclined ring directly below the bottom outlet of the storage box, the feed falling into the mixing box can first fall on the inclined edge of the inclined ring, then bounce up, and then fall from the middle position of the inclined ring to the bottom for stirring, which can achieve the effect of pre-mixing.

[0008] The above-mentioned feed mixing equipment for livestock breeding has multiple groups of mutually symmetrical brackets fixedly installed on the outer surface of the mixing box, and two mutually symmetrical electric telescopic rods fixedly installed on the outer surface of the mixing box near the bottom. The bottom end of the electric telescopic rod is fixedly installed with a bottom plate, one side of the bottom plate is fixedly connected to the side of the bottom cover through a connecting rod, and a through hole is coaxially opened on the bottom cover; when the telescopic end of the electric telescopic rod is extended, it can drive the bottom cover to descend, thereby releasing the mixed feed in the mixing box.

[0009] The above-mentioned feed mixing equipment for livestock breeding has a stirring shaft coaxially installed on the top wall of the mixing box, and two limit rings are fixedly installed on the outer surface of the stirring shaft, and the two limit rings are respectively pressed against the upper surface and lower surface of the top wall of the mixing box, and the stirring rod is fixedly installed on the outer surface of the stirring shaft, and the stirring rod is located below the oblique ring, and a driven bevel gear is coaxially fixed on the top end of the stirring shaft, and the bottom end of the stirring shaft is inserted into the through hole, and the diameter of the stirring shaft is equal to the diameter of the through hole; the two limit rings can limit the position of the stirring shaft, so that the bottom end of the stirring shaft is inserted into the through hole, and the position of the stirring shaft can be relatively fixed.

[0010] The above-mentioned feed mixing equipment for livestock breeding, the driving mechanism includes a driving motor, the driving motor is fixedly mounted on the top of the mixing box through a motor seat, the output shaft of the driving motor is coaxially fixedly connected with the transmission shaft, the outer surface of the transmission shaft near the middle position is provided with a support plate, the bottom end of the support plate is fixedly mounted on the top of the mixing box, the outer surface of the transmission shaft is coaxially fixedly mounted with a driving bevel gear, the driving bevel gear is meshed with the driven bevel gear; the driving motor drives the driving bevel gear to rotate through the transmission shaft, and the driving bevel gear drives the stirring shaft and the stirring rod to rotate through the driven bevel gear.

[0011] The above-mentioned feed mixing equipment for livestock breeding has a feeding hole penetrated through the top wall of the mixing box, the bottom end of the storage box is connected with the interior of the mixing box through the feeding hole, and the rotating rod is rotatably installed in the interior of the storage box near the bottom end.

[0012] The above-mentioned feed mixing equipment for livestock breeding, the diameter-changing mechanism includes a turntable, the outer side of the turntable is coaxially provided with a side groove near the middle position, the inner side of the side groove is evenly spaced with a plurality of slide rod holes, the inside of the slide rod hole is slidably installed with a slide rod, the outer end of the slide rod extends into the side groove and is fixedly installed with an arc plate, the inside of the turntable is coaxially installed with a drive disk, the drive disk and the slide rod are not on the same plane, the side of the slide rod hole is connected to the space where the drive disk is located, the side of the slide rod is fixedly installed with a drive rod near the inner end, the The driving disc is provided with a driving inclined groove matching the driving rod, and the driving rod slides in the driving inclined groove. A gear shaft is coaxially fixedly installed on the outer side of the driving disc, and the gear shaft extends to the outside of the turntable. A second sliding groove is provided on the outer side of the turntable, and a gear block is slidably installed inside the second sliding groove through a second spring, and the tooth surface of the gear block presses against the tooth groove of the gear shaft; when the gear shaft is rotated, the driving disc rotates accordingly, and the driving rod is driven in the driving inclined groove. Under the action of the driving rod, the sliding rod slides outward or inward, causing the arc plate to extend or retract into the side groove, thereby changing the diameter of the turntable.

[0013] The above-mentioned feed mixing equipment for livestock breeding is characterized in that a first slide groove is vertically opened on the wall of the mixing box, a slider is slidably installed in the first slide groove by a first spring, and a spreading shaft is rotatably installed on the outer side of the slider, the spreading shaft, the transmission shaft and the turntable are connected by a transmission belt, and a level meter is provided on the lower surface of the oblique ring, and the level meter is electrically connected to the drive motor and the electric telescopic rod through a controller; by setting the sliding spreading shaft, even if the diameter of the turntable changes, the taut state of the transmission belt can still be guaranteed, so that the transmission shaft can always drive the turntable to rotate, and by setting the level meter, after the feed in the mixing box is sensed by the level meter, the controller controls the drive motor to stop and controls the telescopic end of the electric telescopic rod to extend, which can prevent too much feed in the mixing box from being unable to be mixed evenly.

[0014] The beneficial effects of the utility model are:

[0015] 1. The utility model provides a diameter-changing mechanism at one end of the rotating rod, and connects the diameter-changing mechanism to the driving mechanism. As the diameter of the diameter-changing mechanism changes, the rotation speed of the rotating rod can be changed, thereby controlling the unloading speed of multiple storage boxes, and achieving the effect of accurately controlling the unloading amount of each storage box.

[0016] 2. The utility model connects the diameter reducing mechanism and the stirring rod to the driving mechanism, so that the driving mechanism can drive the rotating rod to rotate to discharge the feed and at the same time drive the stirring rod to rotate to stir the various feeds that fall, thereby saving energy.

[0017] 3. The utility model provides an oblique ring on the inner surface of the mixing box, and makes the oblique ring located just below the bottom outlet of the storage box, so that the feed falling into the mixing box first falls on the oblique side of the oblique ring, then bounces up, and then falls from the middle position of the oblique ring to the bottom for stirring, which can achieve the effect of pre-mixing. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the cross-sectional structure of the utility model;

[0019] Figure 2 This is a schematic diagram of the external structure of the utility model;

[0020] Figure 3 For this utility model Figure 2 A in the middle is an enlarged structural diagram;

[0021] Figure 4 This is a schematic diagram of the structure of the slider of the utility model;

[0022] Figure 5 This is a schematic diagram of the cross-sectional structure of the turntable of the utility model;

[0023] Figure 6This is a schematic diagram of the driving mechanism structure of the utility model.

[0024] In the picture:

[0025] 1. Mixing box; 2. Bottom cover; 3. Stirring rod; 4. Storage box; 5. Rotating rod; 6. Driving groove; 7. Bevel ring; 8. Bracket; 9. Electric telescopic rod; 10. Bottom plate; 11. Connecting rod; 12. Through hole; 13. Stirring shaft; 14. Limiting ring; 15. Driven bevel gear; 16. Driving motor; 17. Motor seat; 18. Transmission shaft; 19. Support plate; 20. Driving bevel gear; 21. Dropping hole; 22. Turntable; 23. Side groove; 24. Slide rod hole; 25. Slide rod; 26. Arc plate; 27. Driving disc; 28. Driving rod; 29. ​​Driving bevel groove; 30. Gear shaft; 31. Second slide groove; 32. Second spring; 33. Tooth block; 34. First slide groove; 35. First spring; 36. Slider; 37. Spreading shaft; 38. Transmission belt; 39. Material level meter. DETAILED DESCRIPTION

[0026] The preferred embodiments of the present invention are described below with reference to the accompanying drawings. Those skilled in the art should understand that these embodiments are only used to explain the technical principles of the present invention and are not intended to limit the scope of protection of the present invention.

[0027] like Figure 1 As shown, the embodiment of the utility model discloses a feed mixing device for livestock breeding, comprising a mixing box 1, a bottom cover 2 being movably provided at the bottom of the mixing box 1, a stirring rod 3 being provided inside the mixing box 1, a driving mechanism being provided at the top of the mixing box 1, the stirring rod 3 being driven and connected with the driving mechanism, a plurality of storage boxes 4 being fixedly installed on the top of the mixing box 1, the bottom ends of the storage boxes 4 being communicated with the interior of the mixing box 1, a rotating rod 5 being rotatably installed at the bottom of the storage boxes 4, a driving groove 6 being provided on the outer surface of the rotating rod 5, a diameter reducing mechanism being coaxially provided at one end of the rotating rod 5, the diameter reducing mechanism being driven and connected with the driving mechanism, an oblique ring 7 being fixedly installed on the inner surface of the mixing box 1, the oblique ring 7 being located just below the bottom outlet of the storage box 4; by arranging a diameter reducing mechanism at one end of the rotating rod 5 The structure is constructed, and the diameter-changing mechanism is connected to the driving mechanism. As the diameter of the diameter-changing mechanism changes, the rotation speed of the rotating rod 5 can be changed, thereby controlling the unloading speed of multiple storage boxes 4, and accurately controlling the unloading amount of each storage box; by connecting the diameter-changing mechanism and the stirring rod 3 to the driving mechanism, the driving mechanism can drive the rotating rod 5 to rotate to unload while also driving the stirring rod 3 to rotate to stir the various feeds that fall, thereby saving energy; by arranging an oblique ring 7 on the inner surface of the mixing box 1, and making the oblique ring 7 located directly below the bottom outlet of the storage box 4, the feed that falls into the mixing box 1 can first fall on the oblique side of the oblique ring 7, then bounce up, and then fall from the middle position of the oblique ring 7 to the bottom for stirring, which can achieve the effect of pre-mixing.

[0028] like Figure 1-2 As shown, a plurality of mutually symmetrical brackets 8 are fixedly installed on the outer surface of the mixing box 1, and two mutually symmetrical electric telescopic rods 9 are fixedly installed on the outer surface of the mixing box 1 near the bottom. A bottom plate 10 is fixedly installed at the bottom end of the electric telescopic rod 9. One side of the bottom plate 10 is fixedly connected to the side of the bottom cover 2 through a connecting rod 11, and a through hole 12 is coaxially opened on the bottom cover 2; when the telescopic end of the electric telescopic rod 9 is extended, it can drive the bottom cover 2 to descend, thereby releasing the mixed feed in the mixing box 1.

[0029] like Figure 1 As shown, a stirring shaft 13 is coaxially installed on the top wall of the mixing box 1, and two limit rings 14 are fixedly installed on the outer surface of the stirring shaft 13. The two limit rings 14 are respectively pressed against the upper surface and the lower surface of the top wall of the mixing box 1, and the stirring rod 3 is fixedly installed on the outer surface of the stirring shaft 13, and the stirring rod 3 is located below the oblique ring 7. A driven bevel gear 15 is coaxially fixed on the top of the stirring shaft 13, and the bottom end of the stirring shaft 13 is inserted into the through hole 12, and the diameter of the stirring shaft 13 is equal to the diameter of the through hole 12; the two limit rings 14 can limit the position of the stirring shaft 13 so that the bottom end of the stirring shaft 13 is inserted into the through hole 12, and the position of the stirring shaft 13 can be relatively fixed.

[0030] like Figure 6 As shown, the driving mechanism includes a driving motor 16, which is fixedly mounted on the top of the mixing box 1 through a motor base 17. The output shaft of the driving motor 16 is coaxially fixedly connected to the transmission shaft 18. A support plate 19 is provided on the outer surface of the transmission shaft 18 near the middle position. The bottom end of the support plate 19 is fixedly mounted on the top of the mixing box 1. A driving bevel gear 20 is coaxially fixedly mounted on the outer surface of the transmission shaft 18. The driving bevel gear 20 is meshed with the driven bevel gear 15. The driving motor 16 drives the driving bevel gear 20 to rotate through the transmission shaft 18, and the driving bevel gear 20 drives the stirring shaft 13 and the stirring rod 3 to rotate through the driven bevel gear 15.

[0031] like Figure 1 As shown, a feeding hole 21 is provided on the top wall of the mixing box 1, and the bottom end of the storage box 4 is connected to the interior of the mixing box 1 through the feeding hole 21, and the rotating rod 5 is rotatably installed in the interior of the storage box 4 near the bottom end.

[0032] like Figure 3-5As shown, the diameter-changing mechanism includes a turntable 22, a side groove 23 is coaxially opened on the outer side of the turntable 22 near the middle position, a plurality of slide rod holes 24 are opened at equal intervals on the inner side of the side groove 23, a slide rod 25 is slidably installed inside the slide rod hole 24, the outer end of the slide rod 25 extends into the side groove 23 and is fixedly installed with an arc plate 26, a driving disk 27 is coaxially installed inside the turntable 22, the driving disk 27 and the slide rod 25 are not on the same plane, the side of the slide rod hole 24 is connected to the space where the driving disk 27 is located, a driving rod 28 is fixedly installed on the side of the slide rod 25 near the inner end, and a matching driving rod 28 is opened on the driving disk 27 The driving inclined groove 29 is provided, and the driving rod 28 slides in the driving inclined groove 29. A gear shaft 30 is coaxially fixedly installed on the outer side of the driving disk 27. The gear shaft 30 extends to the outside of the turntable 22. A second sliding groove 31 is provided on the outer side of the turntable 22. A tooth block 33 is slidingly installed inside the second sliding groove 31 through a second spring 32. The tooth surface of the tooth block 33 abuts against the tooth groove of the gear shaft 30. When the gear shaft 30 is rotated, the driving disk 27 rotates accordingly, and the driving rod 28 is driven in the driving inclined groove 29. Under the action of the driving rod 28, the sliding rod 25 slides outward or inward, causing the arc plate 26 to extend or retract into the side groove 23, thereby changing the diameter of the turntable 22.

[0033] like Figure 3 As shown, a first chute 34 is vertically opened on the wall of the mixing box 1, and a slider 36 is slidably installed in the first chute 34 through a first spring 35, and a spreading shaft 37 is rotatably installed on the outer side of the slider 36. The spreading shaft 37, the transmission shaft 18 and the turntable 22 are connected by a transmission belt 38. A level meter 39 is provided on the lower surface of the oblique ring 7, and the level meter 39 is electrically connected to the drive motor 16 and the electric telescopic rod 9 through the controller; by setting the sliding spreading shaft 37, even if the diameter of the turntable 22 changes, the taut state of the transmission belt 38 can still be guaranteed, so that the transmission shaft 18 can always drive the turntable 22 to rotate. By setting the level meter 39, after the feed in the mixing box 1 is sensed by the level meter 39, the controller controls the drive motor 16 to stop and controls the telescopic end of the electric telescopic rod 9 to extend, which can prevent too much feed in the mixing box 1 from being mixed evenly.

[0034] It should be noted that in the description of this utility model, terms such as "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer" indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings. This is merely for ease of description and does not indicate or imply that the device or element described must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0035] Furthermore, it should be noted that, in the description of this utility model, unless otherwise expressly specified or limited, the terms "installed," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; direct connections, indirect connections through an intermediate medium, and internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on specific circumstances.

[0036] Thus far, the technical solutions of the present invention have been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it is readily understood by those skilled in the art that the scope of protection of the present invention is obviously not limited to these specific embodiments. Without departing from the principles of the present invention, those skilled in the art may make equivalent changes or substitutions to the relevant technical features, and the technical solutions after such changes or substitutions will fall within the scope of protection of the present invention.

Claims

1. A feed mixing device for livestock breeding, comprising a mixing box (1), characterized in that: The bottom of the mixing box (1) is movably provided with a bottom cover (2), the interior of the mixing box (1) is provided with a stirring rod (3), the top of the mixing box (1) is provided with a driving mechanism, the stirring rod (3) is connected to the driving mechanism, a plurality of storage boxes (4) are fixedly installed on the top of the mixing box (1), the bottom ends of the storage boxes (4) are connected to the interior of the mixing box (1), a rotating rod (5) is rotatably installed on the bottom of the storage box (4), a driving groove (6) is provided on the outer surface of the rotating rod (5), a reducing mechanism is coaxially provided on one end of the rotating rod (5), the reducing mechanism is connected to the driving mechanism, an inclined ring (7) is fixedly installed on the inner surface of the mixing box (1), and the inclined ring (7) is located directly below the bottom outlet of the storage box (4).

2. A livestock feed mixing device according to claim 1, characterized in that: The outer surface of the mixing box (1) is fixedly mounted with a plurality of mutually symmetrical brackets (8); the outer surface of the mixing box (1) is fixedly mounted with two mutually symmetrical electric telescopic rods (9) near the bottom; a bottom plate (10) is fixedly mounted at the bottom end of the electric telescopic rod (9); one side of the bottom plate (10) is fixedly connected to the side of the bottom cover (2) via a connecting rod (11); and a through hole (12) is coaxially penetrated through the bottom cover (2).

3. A livestock feed mixing device according to claim 2, characterized in that: A stirring shaft (13) is coaxially installed on the top wall of the mixing box (1), and two limit rings (14) are fixedly installed on the outer surface of the stirring shaft (13). The two limit rings (14) respectively abut against the upper surface and the lower surface of the top wall of the mixing box (1). The stirring rod (3) is fixedly installed on the outer surface of the stirring shaft (13), and the stirring rod (3) is located below the oblique ring (7). A driven bevel gear (15) is coaxially fixedly installed on the top end of the stirring shaft (13). The bottom end of the stirring shaft (13) is inserted into the through hole (12), and the diameter of the stirring shaft (13) is equal to the diameter of the through hole (12).

4. A livestock feed mixing device according to claim 3, characterized in that: The driving mechanism comprises a driving motor (16), wherein the driving motor (16) is fixedly mounted on the top of the mixing box (1) via a motor seat (17), the output shaft of the driving motor (16) is coaxially fixedly connected to a transmission shaft (18), a support plate (19) is provided on the outer surface of the transmission shaft (18) near the middle position, the bottom end of the support plate (19) is fixedly mounted on the top of the mixing box (1), and a driving bevel gear (20) is coaxially fixedly mounted on the outer surface of the transmission shaft (18), and the driving bevel gear (20) is meshingly connected to the driven bevel gear (15).

5. A livestock feed mixing device according to claim 4, characterized in that: A material drop hole (21) is formed through the top wall of the mixing box (1); the bottom end of the material storage box (4) is connected to the interior of the mixing box (1) through the material drop hole (21); and the rotating rod (5) is rotatably mounted in a position near the bottom end of the interior of the material storage box (4).

6. A livestock feed mixing device according to claim 5, characterized in that: The diameter-changing mechanism comprises a rotating disk (22), a side groove (23) is coaxially provided on the outer side of the rotating disk (22) near the middle, a plurality of slide rod holes (24) are uniformly spaced on the inner side of the side groove (23), a slide rod (25) is slidably installed inside the slide rod hole (24), the outer end of the slide rod (25) extends into the side groove (23) and is fixedly installed with an arc plate (26), a driving disk (27) is coaxially rotatably installed inside the rotating disk (22), the driving disk (27) and the slide rod (25) are not on the same plane, the side of the slide rod hole (24) is connected to the space where the driving disk (27) is located, and the slide rod A driving rod (28) is fixedly installed at a position near the inner end of the side of the rotating disk (25); a driving inclined groove (29) matching the driving rod (28) is provided on the driving disk (27); the driving rod (28) slides in the driving inclined groove (29); a gear shaft (30) is coaxially fixedly installed on the outer side of the driving disk (27); the gear shaft (30) extends to the outside of the rotating disk (22); a second sliding groove (31) is provided on the outer side of the rotating disk (22); a tooth block (33) is slidably installed inside the second sliding groove (31) through a second spring (32); the tooth surface of the tooth block (33) abuts against the tooth groove of the gear shaft (30).

7. A livestock feed mixing device according to claim 6, characterized in that: A first slide groove (34) is vertically provided on the wall of the mixing box (1), a slider (36) is slidably installed in the first slide groove (34) via a first spring (35), an expansion shaft (37) is rotatably installed on the outer side of the slider (36), the expansion shaft (37), the transmission shaft (18) and the turntable (22) are connected by a transmission belt (38), and a material level meter (39) is provided on the lower surface of the oblique ring (7), and the material level meter (39) is electrically connected to the drive motor (16) and the electric telescopic rod (9) through a controller.

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