Intelligent water and fertilizer integrated irrigation machine

Through the design of the intelligent water-fertilizer integrated irrigation machine, the problems of uneven mixing of water and fertilizer and inconvenient irrigation height are solved, and uniform mixing of water and fertilizer and flexible irrigation are achieved.

CN223428885UActive Publication Date: 2025-10-14HENAN XIAONIU INTERNET OF THINGS TECHNOLOGY CO LTD
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Patent Information

Application Number
CN202422949892.1
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-12-01
Publication Date
2025-10-14
Estimated Expiration
2034-12-01

AI Technical Summary

Technical Problem

Existing irrigation machines are prone to residue on the inner wall after mixing highly viscous water and fertilizer, which affects the mixing uniformity and is inconvenient to adjust the irrigation height, making it difficult to evenly irrigate the water and fertilizer to the crop roots.

Method used

An intelligent integrated water and fertilizer irrigation machine was designed, which includes a mixing box, a stirring component and an irrigation component. The stirring rod is driven by a servo motor for stirring. Combined with an adjustable irrigation nozzle and universal wheels, it is easy to move and achieve uniform mixing of water and fertilizer and height adjustment.

Benefits of technology

It effectively avoids the residue of water and fertilizer in the mixing box, ensures the uniformity of water and fertilizer mixing, and can adjust the irrigation height as needed to ensure that water and fertilizer are evenly irrigated to the crop roots.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model discloses an intelligent water and fertilizer integrated irrigation machine, which belongs to the technical field of intelligent water and fertilizer integrated irrigation machines, and is characterized by comprising a bottom plate, the top of the bottom plate is fixedly connected with a mixing box, the top of the mixing box is fixedly connected with a sealing cover, and the top of the sealing cover is provided with an annular hole; the interior of the annular hole is rotatably connected with a cleaning assembly, the interior of the cleaning assembly is fixedly connected with a stirring assembly, and the front side of the mixing box communicates with an irrigation assembly. The irrigation machine solves the problems that after an existing irrigation machine mixes and stirs water and fertilizer with high viscidity, water and fertilizer residues easily appear on the inner wall of the existing irrigation machine, so that the residual water and fertilizer influence the follow-up water and fertilizer mixing uniformity, and most irrigation machines are inconvenient to adjust the irrigation height, so that when the irrigation height is high, the water and fertilizer residues easily appear on the inner wall of the existing irrigation machine. When the irrigation height is low, water and fertilizer are not convenient to irrigate to crop roots, and when the irrigation height is low, non-uniform water and fertilizer irrigation is easily caused.
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Description

Technical Field

[0001] The utility model relates to the technical field of intelligent water-fertilizer integrated irrigation machines, in particular to an intelligent water-fertilizer integrated irrigation machine. Background Art

[0002] Water fertilization is a method of fertilization in agricultural production. It combines water and fertilizer and applies them together near the roots of crops through an irrigation system. The principle of water fertilization is to use water to transport fertilizer to the roots of plants, allowing plants to absorb nutrients more efficiently.

[0003] At present, the Chinese utility model with the announcement number: CN214676552U discloses a convenient water-fertilizer integrated irrigation machine, including a mobile base, a mobile universal wheel driving a self-locking mechanism is installed at the bottom of the mobile base, an irrigation mixing box is fixed on the top of the mobile base, and a connecting cover is provided on the top of the irrigation mixing box. The left and right sides of the connecting cover are screwed to the top of the irrigation mixing box by fastening bolts, a driving motor is installed on the top of the connecting cover, and a rotating rod is fixed to the output end of the bottom of the driving motor. The bottom of the rotating rod passes through the bottom of the connecting cover and extends to the inner cavity of the irrigation mixing box. A water tank is fixed on the top of the mobile base on the right side of the irrigation mixing box, and a water pipe is connected to the top of the water tank and extends to the bottom of the inner cavity of the water tank. A water pump is installed on the water pipe. This utility model device drives the mixing rod to rotate through the rotating rod, fully stirs and mixes the water and fertilizer inside the irrigation mixing box, and can stretch and shorten the telescopic threaded sleeve to change the irrigation distance.

[0004] When irrigating crops, an irrigation machine is used, and an intelligent water-fertilizer integrated irrigation machine is one of them. However, after the existing irrigation machine mixes and stirs some water and fertilizers with high viscosity, water and fertilizer residues are likely to appear on the inner wall, causing the residual water and fertilizer to affect the uniformity of subsequent water and fertilizer mixing. In addition, most irrigation machines are not convenient for adjusting the irrigation height, which makes it difficult to irrigate water and fertilizer to the crop roots when the irrigation height is high, and easily leads to uneven water and fertilizer irrigation when the irrigation height is low. Utility Model Content

[0005] The utility model provides an intelligent water-fertilizer integrated irrigation machine, which aims to solve the problem that after the existing irrigation machines mix and stir some water and fertilizers with high viscosity, water and fertilizer residues are easily left on the inner wall of the irrigation machine, thereby causing the residual water and fertilizer to affect the uniformity of subsequent water and fertilizer mixing, and most irrigation machines are not convenient for adjusting the irrigation height, which makes it difficult to irrigate the water and fertilizer to the crop root system when the irrigation height is high, and easily leads to uneven water and fertilizer irrigation when the irrigation height is low.

[0006] The utility model discloses an intelligent water and fertilizer integrated irrigation machine, which comprises a bottom plate, a mixing box fixedly connected to the top of the bottom plate, a sealing cover fixedly connected to the top of the mixing box, an annular hole formed in the top of the sealing cover, a cleaning assembly rotatably connected to the inside of the annular hole, a stirring assembly fixedly connected to the inside of the cleaning assembly, and an irrigation assembly in communication with the front side of the mixing box.

[0007] The cleaning assembly comprises a through pipe, the surface of the through pipe is rotatably connected to the inside of the annular hole, a belt disc is fixedly connected to the surface of the through pipe, a transmission belt is arranged in the inside of the belt disc, a transmission motor is fixedly connected to the inside of the belt disc, a square frame is fixedly connected to the bottom of the through pipe, mounting holes are formed in the top and bottom of the square frame, ball bearings are fixedly connected to the inside of the mounting holes, and cleaning brushes are fixedly connected to the two sides and bottom of the square frame.

[0008] In order to stir the water and fertilizer, the stirring assembly comprises a fixed support, the bottom of the fixed support is fixedly connected to the top of the sealing cover, a servo motor is fixedly connected to the inside of the fixed support, a connecting rod is fixedly connected to the output end of the servo motor, the surface of the connecting rod is rotatably connected to the inside of the through pipe, the surface of the connecting rod is fixedly connected to the inside of the ball bearing, the bottom of the connecting rod is rotatably connected to the bottom inside the mixing box, and a stirring rod is fixedly connected to the surface of the connecting rod.

[0009] In order to irrigate the crops and adjust the irrigation height, the irrigation assembly comprises a connecting pipe, one end of the connecting pipe is in communication with the front side of the mixing box, a water pump is in communication with the other end of the connecting pipe, a flexible hose is in communication with the other end of the water pump, an irrigation nozzle is in communication with the other end of the flexible hose, an adjusting plate is fixedly connected to the surface of the irrigation nozzle, U-shaped limit racks are slidably connected to the inside of the two ends of the adjusting plate, the bottom of the U-shaped limit racks is fixedly connected to the top of the bottom plate, adjusting bolts are screwedly connected to the inside of the U-shaped limit racks, and one end of the adjusting bolts is rotatably connected to the top of the adjusting plate.

[0010] In order to move the irrigation machine conveniently, the bottom of the bottom plate is fixedly connected with universal wheels, the universal wheels are arranged at four positions, and the four universal wheels are evenly distributed on the front side and the rear side of the bottom plate.

[0011] In order to play the effect of pushing the irrigation machine and protecting the auxiliary frame, as the intelligent water and fertilizer integrated irrigation machine of the utility model is optimized, the rear side of the top of the bottom plate is fixedly connected with an auxiliary frame, and the surface of the auxiliary frame is fixedly connected with a rubber sleeve used in cooperation.

[0012] In order to play the effect of transmitting mechanical energy, as the intelligent water and fertilizer integrated irrigation machine of the utility model is optimized, two belt pulleys are arranged, the inside of one belt pulley is fixedly connected with the surface of the through pipe, and the inside of the other belt pulley is fixedly connected with the output end of the transmission motor.

[0013] In order to play the effect of reinforcing the transmission motor, as the intelligent water and fertilizer integrated irrigation machine of the utility model is optimized, the surface of the transmission motor is fixedly connected with a fixed block, and the front side of the fixed block is fixedly connected with the rear side of the mixing box.

[0014] In order to play the effect of discharging the cleaned wastewater, facilitating the addition of water and fertilizer, and sealing the drain pipe and the feed pipe, as the intelligent water and fertilizer integrated irrigation machine of the utility model is optimized, the right side of the mixing box is communicated with a drain pipe and a feed pipe, and the other ends of the drain pipe and the feed pipe are both provided with rubber plugs.

[0015] Compared with the prior art, the utility model has the beneficial effects that:

[0016] The intelligent water and fertilizer integrated irrigation machine is provided with a bottom plate, a mixing box, a sealing cover, an annular hole, a cleaning assembly, a stirring assembly and an irrigation assembly. The bottom plate can fix the mixing box. The mixing box can fix the sealing cover. The sealing cover and the annular hole can fix the stirring assembly and limit the irrigation assembly. The cleaning assembly can clean the water and fertilizer adhered to the inside of the mixing box when rotating, thereby avoiding the adhesion of the water and fertilizer and ensuring the uniformity of the subsequent mixing of the water and fertilizer. The stirring assembly can stir and mix the water and fertilizer added to the mixing box. The irrigation assembly can pump the water and fertilizer in the mixing box to the roots of crops. When the irrigation height needs to be adjusted, the irrigation assembly can be rotated to adjust the height of the irrigation assembly. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is the overall structural drawing of the intelligent water and fertilizer integrated irrigation machine of the utility model.

[0018] Figure 2 It is the sectional view of the mixing box in the utility model.

[0019] Figure 3 It is the connection schematic view of the mixing box and the bottom plate in the utility model.

[0020] Figure 4 is a structural schematic view of the cleaning assembly in the utility model;

[0021] Figure 5 is a structural schematic view of the stirring assembly in the utility model;

[0022] Figure 6 is a structural schematic view of the irrigation assembly in the utility model.

[0023] In the figure, 1, bottom plate; 2, mixing box; 3, sealing cover; 4, annular hole; 5, cleaning assembly; 501, through pipe; 502, belt disc; 503, transmission belt; 504, transmission motor; 505, square frame; 506, mounting hole; 507, ball bearing; 508, cleaning brush; 6, stirring assembly; 601, fixed support; 602, servo motor; 603, connecting rod; 604, stirring rod; 7, irrigation assembly; 701, connecting pipe; 702, water pump; 703, flexible hose; 704, irrigation nozzle; 705, adjusting plate; 706, U-shaped limiting frame; 707, adjusting bolt; 8, universal wheel; 9, auxiliary frame; 10, rubber sleeve; 11, fixed block; 12, drain pipe; 13, feed pipe; 14, rubber plug. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical scheme and advantages of the utility model more clear and intelligible, the following will be further described in detail in combination with the drawings and examples. It should be understood that the specific examples described herein are only used to explain the utility model, and are not used to limit the utility model.

[0025] In the description of the utility model, it should be understood that the orientation or position relationship indicated by the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like is the orientation or position relationship shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, therefore it cannot be understood as a limitation on the utility model. In addition, in the description of the utility model, the meaning of "multiple" is two or more than two, unless otherwise specifically limited.

[0026] Please refer to Figure 1-6The utility model provides technical scheme: intelligent water and fertilizer integration irrigation machine, the top of bottom plate 1 is fixedly connected with mixing box 2, the top of mixing box 2 is fixedly connected with sealing cover 3, the top of sealing cover 3 is equipped with annular hole 4, the inside rotation of annular hole 4 is connected with cleaning assembly 5, the inside fixed connection of cleaning assembly 5 has stirring assembly 6, the front side of mixing box 2 is connected with irrigation assembly 7,

[0027] Cleaning assembly 5 includes through pipe 501, the surface of through pipe 501 is rotatably connected with the inside of annular hole 4, the surface of through pipe 501 is fixedly connected with belt disc 502, belt disc 502 is provided with transmission belt 503 in the inside, transmission motor 504 is fixedly connected in the inside of belt disc 502, the bottom of through pipe 501 is fixedly connected with square frame 505, the top and bottom of square frame 505 are equipped with mounting hole 506, ball bearing 507 is fixedly connected in mounting hole 506, cleaning brush 508 is fixedly connected on both sides and the bottom of square frame 505.

[0028] In the embodiment: through the setting of bottom plate 1, mixing box 2, sealing cover 3, annular hole 4, cleaning assembly 5, stirring assembly 6 and irrigation assembly 7, the setting of bottom plate 1 can fix mixing box 2, the setting of mixing box 2 can fix sealing cover 3, and in the cooperation of sealing cover 3 and annular hole 4, stirring assembly 6 can be fixed and irrigation assembly 7 can be limited, the setting of cleaning assembly 5 can clean the water and fertilizer adhered in mixing box 2 by contacting the inside of mixing box 2 when rotating, thereby avoiding the adhesion of water and fertilizer, making the subsequent mixing of water and fertilizer uneven, the setting of stirring assembly 6 can stir and mix the water and fertilizer added in mixing box 2, and the setting of irrigation assembly 7 can pump the water and fertilizer in mixing box 2 to the root system of crops, and when the irrigation height needs to be adjusted, irrigation assembly 7 can be rotated, thereby adjusting the height of irrigation assembly 7.

[0029] As the technical optimization scheme of the utility model, stirring assembly 6 includes fixed support 601, the bottom of fixed support 601 is fixedly connected with the top of sealing cover 3, fixed support 601 is fixedly connected with servo motor 602 in the inside, the output end of servo motor 602 is fixedly connected with connecting rod 603, the surface of connecting rod 603 is rotatably connected with the inside of through pipe 501, the surface of connecting rod 603 is fixedly connected with the inside of ball bearing 507, the bottom of connecting rod 603 is rotatably connected with the bottom in the inside of mixing box 2, and stirring rod 604 is fixedly connected on the surface of connecting rod 603.

[0030] In this embodiment: by setting up the stirring assembly 6, the servo motor 602 can be started by fixing the fixed bracket 601, and after the servo motor 602 is started, the connecting rod 603 can be driven to rotate, and under the drive of the connecting rod 603, the stirring rod 604 can be rotated, and then through the rotation of the stirring rod 604, the water and fertilizer added inside the mixing box 2 can be mixed.

[0031] As a technical optimization solution of the present invention, the irrigation assembly 7 includes a connecting pipe 701, one end of the connecting pipe 701 is connected to the front side of the mixing box 2, the other end of the connecting pipe 701 is connected to the water pump 702, the other end of the water pump 702 is connected to the telescopic hose 703, and the other end of the telescopic hose 703 is connected to the irrigation nozzle 704. The surface of the irrigation nozzle 704 is fixedly connected to the adjustment plate 705, and the internal sliding connection of the two ends of the adjustment plate 705 is U-shaped limit frame 706, the bottom of the U-shaped limit frame 706 is fixedly connected to the top of the base plate 1, and the internal thread of the U-shaped limit frame 706 is connected to the adjusting bolt 707, and one end of the adjusting bolt 707 is rotatably connected to the top of the adjustment plate 705.

[0032] In this embodiment, by providing an irrigation assembly 7, the water pump 702 can be started to pump the water and fertilizer inside the mixing box 2 into the telescopic hose 703 through the connecting pipe 701. Subsequently, the irrigation nozzle 704 can irrigate the water and fertilizer to the crop root system through the telescopic hose 703. When the irrigation height needs to be adjusted, the adjusting bolt 707 can be rotated so that the adjusting bolt 707 can cooperate with the U-shaped limit frame 706 to push the adjusting plate 705 downward. When the adjusting plate 705 moves, the irrigation nozzle 704 can be driven to move, thereby realizing the height adjustment of the irrigation nozzle 704.

[0033] As a technical optimization solution of the present invention, universal wheels 8 are fixedly connected to the bottom of the base plate 1 . There are four universal wheels 8 , and the four universal wheels 8 are evenly distributed on the front and rear sides of the base plate 1 .

[0034] In this embodiment, by providing the universal wheel 8, the irrigation machine can be easily driven to move.

[0035] As a technical optimization solution of the present invention, an auxiliary frame 9 is fixedly connected to the rear side of the top of the bottom plate 1, and a rubber sleeve 10 used in conjunction with the auxiliary frame 9 is fixedly connected to the surface of the auxiliary frame 9.

[0036] In this embodiment, by providing the auxiliary frame 9 and the rubber sleeve 10, the irrigation machine can be pushed by pushing the auxiliary frame 9, and the auxiliary frame 9 can be protected under the protection of the rubber sleeve 10 to avoid damage to the surface of the auxiliary frame 9.

[0037] As the technical optimization scheme of the utility model, two belt pulleys 502 are arranged, one of which is fixedly connected with the surface of the through pipe 501, and the other is fixedly connected with the output end of the transmission motor 504.

[0038] In the embodiment: by setting the belt pulley 502, the mechanical energy of the transmission motor 504 can be transmitted through the setting of the belt pulley 502.

[0039] As the technical optimization scheme of the utility model, the surface of the transmission motor 504 is fixedly connected with a fixed block 11, and the front side of the fixed block 11 is fixedly connected with the rear side of the mixing box 2.

[0040] In the embodiment: by setting the fixed block 11, the transmission motor 504 can be reinforced through the setting of the fixed block 11, so that the use stability of the transmission motor 504 can be improved.

[0041] As the technical optimization scheme of the utility model, the right side of the mixing box 2 is communicated with a drain pipe 12 and a feeding pipe 13, and the other end of the drain pipe 12 and the feeding pipe 13 is provided with a rubber plug 14.

[0042] In the embodiment: by setting the drain pipe 12, the feeding pipe 13 and the rubber plug 14, the cleaning wastewater can be discharged through the drain pipe 12, and the user can add water and fertilizer into the mixing box 2 through the feeding pipe 13, and under the sealing action of the rubber plug 14, the drain pipe 12 and the feeding pipe 13 can be prevented from leaking.

[0043] Working principle: First, add water and fertilizer into the mixing box 2 in proportion, then fix the bracket 601 and start the servo motor 602. After the servo motor 602 is started, it can drive the connecting rod 603 to rotate, and under the drive of the connecting rod 603, the stirring rod 604 can be rotated, and then the water and fertilizer added to the mixing box 2 can be mixed by the rotation of the stirring rod 604. Then, by rotating the adjusting bolt 707, the adjusting bolt 707 can be made to cooperate with the U-shaped limit frame 706 to push the adjusting plate 705 downward, and when the adjusting plate 705 moves, the irrigation nozzle 704 can be driven to move. Then, after the irrigation nozzle 704 moves to the required height, the water pump 702 is started, so that it can pump the water and fertilizer inside the mixing box 2 into the telescopic hose 703 through the connecting pipe 701, and then through the telescopic The transportation of the hose 703 can enable the irrigation nozzle 704 to irrigate water and fertilizer to the root system of the crop. After irrigation, the transmission motor 504 can be started, and then the transmission motor 504 drives the through pipe 501 to rotate through the belt pulley 502 and the transmission belt 503, and through the connection between the through pipe 501 and the square frame 505, it can drive the square frame 505 to rotate. When the square frame 505 rotates, the outer ring of the ball bearing 507 can be driven to rotate through the mounting hole 506, so that the connecting rod 603 connected to the inner ring of the ball bearing 507 will not rotate. Then, driven by the square frame 505, the cleaning brush 508 in contact with the inside of the mixing box 2 can be rotated. Then, through the rotation of the cleaning brush 508, the water and fertilizer attached to the inside of the mixing box 2 can be cleaned, and then the cleaning waste water can be discharged through the drain pipe 12.

[0044] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. An intelligent water-fertilizer integrated irrigation machine, comprising a bottom plate (1), characterized in that: The top of the bottom plate (1) is fixedly connected to a mixing box (2), the top of the mixing box (2) is fixedly connected to a sealing cover (3), the top of the sealing cover (3) is provided with an annular hole (4), the inside of the annular hole (4) is rotatably connected to a cleaning component (5), the inside of the cleaning component (5) is fixedly connected to a stirring component (6), and the front side of the mixing box (2) is connected to an irrigation component (7); The cleaning assembly (5) comprises a through pipe (501), the surface of the through pipe (501) is rotatably connected to the inside of the annular hole (4), a belt pulley (502) is fixedly connected to the surface of the through pipe (501), a transmission belt (503) is provided inside the belt pulley (502), a transmission motor (504) is fixedly connected inside the belt pulley (502), a square frame (505) is fixedly connected to the bottom of the through pipe (501), mounting holes (506) are provided at the top and bottom of the square frame (505), a ball bearing (507) is fixedly connected inside the mounting hole (506), and cleaning brushes (508) are fixedly connected to both sides and the bottom of the square frame (505).

2. The intelligent water-fertilizer integrated irrigation machine according to claim 1, characterized in that: The stirring assembly (6) comprises a fixed bracket (601), the bottom of the fixed bracket (601) is fixedly connected to the top of the sealing cover (3), the interior of the fixed bracket (601) is fixedly connected to a servo motor (602), the output end of the servo motor (602) is fixedly connected to a connecting rod (603), the surface of the connecting rod (603) is rotatably connected to the interior of the through pipe (501), the surface of the connecting rod (603) is fixedly connected to the interior of the ball bearing (507), the bottom of the connecting rod (603) is rotatably connected to the bottom of the interior of the mixing box (2), and the surface of the connecting rod (603) is fixedly connected to a stirring rod (604).

3. The intelligent water-fertilizer integrated irrigation machine according to claim 1, characterized in that: The irrigation assembly (7) comprises a connecting pipe (701), one end of the connecting pipe (701) is in communication with the front side of the mixing box (2), the other end of the connecting pipe (701) is in communication with a water pump (702), the other end of the water pump (702) is in communication with a telescopic hose (703), the other end of the telescopic hose (703) is in communication with an irrigation nozzle (704), an adjustment plate (705) is fixedly connected to the surface of the irrigation nozzle (704), both ends of the adjustment plate (705) are internally slidably connected to U-shaped limiting frames (706), the bottom of the U-shaped limiting frame (706) is fixedly connected to the top of the base plate (1), the internal thread of the U-shaped limiting frame (706) is threadedly connected to an adjusting bolt (707), one end of the adjusting bolt (707) is rotatably connected to the top of the adjustment plate (705).

4. The intelligent water-fertilizer integrated irrigation machine according to claim 1, characterized in that: The bottom of the base plate (1) is fixedly connected with a universal wheel (8), and there are four universal wheels (8) in total, and the four universal wheels (8) are evenly distributed on the front side and the rear side of the base plate (1).

5. The intelligent water-fertilizer integrated irrigation machine according to claim 1, characterized in that: An auxiliary frame (9) is fixedly connected to the rear side of the top of the bottom plate (1), and a rubber sleeve (10) used in conjunction with the auxiliary frame (9) is fixedly connected to the surface of the auxiliary frame (9).

6. The intelligent water-fertilizer integrated irrigation machine according to claim 1, characterized in that: There are two belt pulleys (502) in total. The interior of one belt pulley (502) is fixedly connected to the surface of the through pipe (501), and the interior of the other belt pulley (502) is fixedly connected to the output end of the transmission motor (504).

7. The intelligent water-fertilizer integrated irrigation machine according to claim 1, characterized in that: A fixed block (11) is fixedly connected to the surface of the transmission motor (504), and the front side of the fixed block (11) is fixedly connected to the rear side of the mixing box (2).

8. The intelligent water-fertilizer integrated irrigation machine according to claim 1, characterized in that: The right side of the mixing box (2) is connected to a drain pipe (12) and a feed pipe (13), and the other ends of the drain pipe (12) and the feed pipe (13) are both provided with rubber stoppers (14).

Citation Information

Patent Citations

  • Convenient water and fertilizer integrated irrigation machine

    CN214676552U