An egg sorting device for laying hens

Abstract

The utility model discloses an egg sorting device for egg -breeding, relates to egg sorting technical field, including base, the lateral surface fixed mounting of base has the material conveying mechanism, the upper surface fixed mounting of base has rotary unit and guide tube, the fixed mounting of rotary unit has the material grabbing unit, and the protection unit is installed in guide tube, and the fixed mounting of material grabbing unit and guide tube has detection unit. Advantageous effects lie in that the size of egg is detected through the second photoelectric sensing mechanism, the weight of egg is detected through the suspension weighing mechanism, the specification of egg is determined quickly, the top plate and the elastic pad are driven by the force arm and the buffer detection assembly to clamp the egg quickly, the sorting of egg is completed, the egg is buffered and protected through the elastic pad and the buffer detection assembly, thereby effectively improving the efficiency of egg sorting, reducing the collision damage of egg in the sorting process, and guaranteeing the quality after the sorting of egg.

Description

Technical Field

[0001] This utility model relates to the field of egg sorting technology, and in particular to an egg sorting device for laying hen farming. Background Technology

[0002] Laying hens are chickens raised specifically to produce eggs. Unlike broiler chickens, the main focus of raising laying hens is to improve egg quality and maintain or increase egg production, rather than improving chicken meat quality. Eggs are the primary source of income for laying hen farmers, and eggs are categorized into different sizes based on their weight and dimensions.

[0003] A search revealed that Chinese patent application CN222982249U discloses an egg sorting device for laying hen farming. The device mainly uses sorting channels, slides, barrier holes, and trays to sieve eggs one by one during the movement process, thereby improving the sieving effect.

[0004] Compared with existing technologies in related fields, it can be seen that most existing egg sorting methods determine the size of eggs through photoelectric sensors, and then place the eggs into different collection devices through clamping or pushing mechanisms to complete the sorting. During the sorting process, the eggs are subjected to forces from multiple directions, making them very easy to be damaged and broken, which affects the quality of the sorted eggs. Utility Model Content

[0005] The purpose of this invention is to provide an egg sorting device for laying hen farming in order to solve the above-mentioned problems.

[0006] This utility model achieves the above objectives through the following technical solutions: An egg sorting device for laying hen farming includes a base, a feeding mechanism fixedly installed on the side of the base, a rotating unit and a guide pipe fixedly installed on the upper surface of the base, a gripping unit fixedly installed on the rotating unit, a protective unit installed inside the guide pipe, and a detection unit fixedly installed inside both the gripping unit and the guide pipe. The material handling unit includes a first electrically controlled telescopic mechanism, a lever arm, and an elastic arc plate. The first electrically controlled telescopic mechanism is fixedly arranged on the rotating unit. A movable frame is fixedly installed on the telescopic end of the first electrically controlled telescopic mechanism. A second electrically controlled telescopic mechanism is fixedly installed on the movable frame. A suspended weighing mechanism is fixedly installed on the second electrically controlled telescopic mechanism. A mounting frame is fixedly installed on the suspended weighing mechanism. A traction component is fixedly installed on the mounting frame. The lever arm is arranged in a circumferential array on the mounting frame. The traction component is rotatably connected to the middle position of the lever arm. A buffer detection component is rotatably installed at the lower end of the lever arm. A top plate is fixedly installed on the buffer detection component. An elastic pad is fixedly installed on the top plate. The two ends of the elastic arc plate are fixedly connected to the lever arm and the buffer detection component.

[0007] Furthermore, the traction assembly includes a third electrically controlled telescopic mechanism, which is fixedly installed in the mounting frame. A traction rod is rotatably mounted on the telescopic end of the third electrically controlled telescopic mechanism, and the traction rod is rotatably connected to the middle position of the lever arm.

[0008] Furthermore, the buffer detection assembly includes a pressure detection mechanism, which is rotatably mounted on the lower end of the lever arm. A clamping frame is fixedly mounted on the pressure detection mechanism, and the clamping frame is fixedly connected to an elastic arc plate. A damping rod is fixedly mounted on the clamping frame, and a spring is sleeved on the damping rod. The damping rod is fixedly connected to a top plate.

[0009] Furthermore, the rotating unit includes a support frame, which is fixedly installed on the upper surface of the base. A placement cavity is provided at the upper end of the support frame, and a motor is fixedly installed inside the placement cavity. A placement rack is fixedly installed on the output shaft of the motor, and the placement rack is fixedly connected to the first electrically controlled telescopic mechanism.

[0010] Furthermore, the protective unit includes a pneumatic buffer and a second airbag. The pneumatic buffer is fixedly installed inside the lower end of the feed tube. A baffle is fixedly installed on the output end of the pneumatic buffer. The baffle is inclined and a first airbag is fixedly installed on the baffle. The second airbag is fixedly installed on the inner wall of the feed tube.

[0011] Furthermore, the detection unit includes a first photoelectric sensing mechanism and a second photoelectric sensing mechanism. The first photoelectric sensing mechanism is fixedly installed around the inner wall of the feed tube, and the second photoelectric sensing mechanism is fixedly installed on the side of the lever arm.

[0012] Furthermore, a protective frame is fixedly installed on the upper surface of the support frame, and a ball bearing is rotatably installed on the upper end of the protective frame, with the ball bearing slidingly connected to the lower surface of the placement frame.

[0013] The advantages compared to existing technologies are as follows: 1. The size of the eggs is detected by the second photoelectric sensor mechanism, and the weight of the eggs is detected by the suspended weighing mechanism, which facilitates the quick determination of the egg specifications. The top plate and elastic pad are driven by the lever arm and buffer detection component to quickly clamp the eggs, thus completing the sorting of eggs. The elastic pad and buffer detection component provide buffer protection for the eggs, thereby effectively improving the efficiency of egg sorting, reducing the collision damage to the eggs during the sorting process, and ensuring the quality of the sorted eggs.

[0014] 2. By using a pressure buffer, a first airbag, and a second airbag to disperse the impact force of the eggs during the sliding process before egg sorting, the reverse force on the eggs is reduced, thereby buffering and protecting the eggs, preventing damage to the eggs, and improving the safety of the eggs during the sliding process in the feed tube. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a first isometric structural schematic diagram of an egg sorting device for laying hen farming according to the present invention; Figure 2 This utility model describes an egg sorting device for laying hen farming. Figure 1 Enlarged structural diagram at point A in the middle; Figure 3 This is a schematic diagram of the mounting frame and lever arm structure of the egg sorting device for laying hen farming described in this utility model; Figure 4 This utility model describes an egg sorting device for laying hen farming. Figure 3 Enlarged structural diagram at point B; Figure 5 This utility model describes an egg sorting device for laying hen farming. Figure 3 Enlarged structural diagram at point C; Figure 6 This is a schematic diagram of the cross-sectional structure of the egg sorting device for laying hen farming described in this utility model, including the placement rack and the feed pipe. Figure 7 This utility model describes an egg sorting device for laying hen farming. Figure 6 Enlarged structural diagram at point D; Figure 8 This utility model describes an egg sorting device for laying hen farming. Figure 6 Enlarged structural diagram at point E; Figure 9 This utility model describes an egg sorting device for laying hen farming. Figure 6 Enlarged structural diagram at point F.

[0017] The annotations in the attached figures are explained as follows: 1. Base; 2. Conveying mechanism; 301. Support frame; 302. Placement cavity; 303. Motor; 304. Placement frame; 401. First electrically controlled telescopic mechanism; 402. Movable frame; 403. Second electrically controlled telescopic mechanism; 404. Suspended weighing mechanism; 405. Mounting frame; 406. Third electrically controlled telescopic mechanism; 407. Lever arm; 408. Traction rod; 409. Pressure detection mechanism; 410. Elastic arc plate; 411. Clamping frame; 412. Damping rod; 413. Spring; 414. Top plate; 415. Elastic pad; 501. Pneumatic buffer; 502. Baffle; 503. First airbag; 504. Second airbag; 6. Guide tube; 7. First photoelectric sensor mechanism; 8. Second photoelectric sensor mechanism; 9. Protective frame; 10. Ball bearing. Detailed Implementation

[0018] like Figures 1-9 As shown, an egg sorting device for laying hen farming includes a base 1. A feeding mechanism 2 is fixedly installed on the side of the base 1. A rotating unit and a guide pipe 6 are fixedly installed on the upper surface of the base 1. A gripping unit is fixedly installed on the rotating unit. A protective unit is installed inside the guide pipe 6. Detection units are fixedly installed inside both the gripping unit and the guide pipe 6. The feeding mechanism 2 and the guide pipe 6 operate using existing technology. The feeding mechanism 2 is divided according to the size of the eggs and is arranged in parallel. The upper end of the guide pipe 6 has a feed inlet, and the upper surface of the lower end of the guide pipe 6 has a discharge outlet. After the hen lays an egg, the egg enters the guide pipe 6 through the feed inlet. The size of the egg is detected by the detection unit. When the egg slides inside the guide pipe 6, the protective unit cushions and protects the egg to prevent damage during movement. Eggs move to the outlet within the feed pipe 6. The gripping unit grips the eggs through the outlet on the feed pipe 6. After gripping, the rotating unit drives the gripping unit and the eggs to rotate, moving them to the conveying mechanism 2. According to the size of the eggs, the gripping unit places the eggs onto the corresponding conveying mechanism 2. When placing eggs onto the conveying mechanism 2, the detection unit determines whether there are eggs at the placement position of the conveying mechanism 2 to avoid squeezing and damaging the eggs.

[0019] like Figures 1-7As shown, the material handling unit includes a first electrically controlled telescopic mechanism 401, a lever arm 407, and an elastic arc plate 410. The first electrically controlled telescopic mechanism 401 is fixedly arranged on the rotating unit. A movable frame 402 is fixedly installed on the telescopic end of the first electrically controlled telescopic mechanism 401. A second electrically controlled telescopic mechanism 403 is fixedly installed on the movable frame 402. A suspended weighing mechanism 404 is fixedly installed on the second electrically controlled telescopic mechanism 403. A mounting frame 405 is fixedly installed on the suspended weighing mechanism 404. A traction component is fixedly installed on the mounting frame 405. The lever arm 407 is arranged in a circular array on the mounting frame 405. The traction component is rotatably connected to the middle position of the lever arm 407. A buffer detection component is rotatably installed at the lower end of the lever arm 407. A top plate 414 is fixedly installed on the buffer detection component. An elastic pad 415 is fixedly installed on the top plate 414. The two ends of the elastic arc plate 410 are fixedly connected to the lever arm 407 and the buffer detection component. The first electrically controlled telescopic mechanism 401 and the second electrically controlled telescopic mechanism 407 are fixedly arranged on the rotating unit. 3. The suspended weighing mechanism 404 and the elastic pad 415 operate using existing technology. When the egg moves to the outlet in the feed tube 6, the second electrically controlled telescopic mechanism 403 moves the power arm 407 and the traction assembly through the suspended weighing mechanism 404 and the mounting frame 405. The power arm 407 moves the top plate 414 and the elastic pad 415 through the buffer detection assembly. The top plate 414 and the elastic pad 415 enter the feed tube 6 through the outlet. According to the size of the egg, the power arm 407 moves through the traction assembly. The power arm 407 moves the top plate 414 and the elastic pad 415 through the buffer detection assembly. The top plate 414 and the elastic pad 415 grip the egg in the feed tube 6. The elastic pad 415 and the buffer detection assembly buffer and protect the egg. The buffer detection assembly detects the clamping force, which facilitates adjustment of the clamping force and avoids damage to the egg from hard contact during clamping. When the top plate 414 and elastic pad 415 clamp the egg, the second electrically controlled telescopic mechanism 403 moves in the opposite direction, causing the clamped egg to rise. During the rising process, the weight detected by the suspended weighing mechanism 404 changes, and the weight of the egg is detected during the movement. The rotating unit drives the first electrically controlled telescopic mechanism 401 to move, so that the grasped egg is moved above the conveying mechanism 2, and the egg's specifications are determined according to its size and weight. The first electrically controlled telescopic mechanism 401 drives the movable frame 402 to move, and the movable frame 402 drives the second electrically controlled telescopic mechanism 403 to move, placing the eggs on different conveying mechanisms 2 according to their specifications, completing the egg sorting, improving the efficiency of egg sorting, reducing collision damage to eggs during sorting, and ensuring the quality of sorted eggs.

[0020] like Figure 4As shown, the traction assembly includes a third electrically controlled telescopic mechanism 406, which is fixedly installed inside the mounting frame 405. A traction rod 408 is rotatably mounted on the telescopic end of the third electrically controlled telescopic mechanism 406. The traction rod 408 is rotatably connected to the middle position of the lever arm 407. The third electrically controlled telescopic mechanism 406 operates using existing technology. The third electrically controlled telescopic mechanism 406 drives the traction rod 408 to move, which in turn drives the lever arm 407. Since the upper end of the lever arm 407 is rotatably mounted on the mounting frame 405, when the traction rod 408 drives the middle position of the lever arm 407, the lower end of the lever arm 407 moves. This causes the top plate 414 and the elastic pad 415 to move, allowing the top plate 414 and the elastic pad 415 to clamp and release the egg, thus completing the egg gripping and feeding process.

[0021] like Figure 5 As shown, the buffer detection assembly includes a pressure detection mechanism 409, which is rotatably mounted on the lower end of the lever arm 407. A clamping frame 411 is fixedly mounted on the pressure detection mechanism 409, and an elastic arc plate 410 is fixedly connected to the clamping frame 411. A damping rod 412 is fixedly mounted on the clamping frame 411, and a spring 413 is sleeved on the damping rod 412. The damping rod 412 is fixedly connected to the top plate 414. The pressure detection mechanism 409, damping rod 412, spring 413, and elastic arc plate 410 operate using existing technology. During the egg gripping process, the pressure detection mechanism 409 detects the force applied to the egg by the top plate 414 and the elastic pad 415, preventing excessive clamping force or inadequate clamping that could damage the egg. Meanwhile, due to the rotatable connection between the pressure detection mechanism 409 and the lever arm 407, the top plate 414 and the elastic pad 415 can tilt when clamping the egg, allowing the top plate 414 and the elastic pad 415 to better fit the egg and ensure effective clamping. When the top plate 414 and the elastic pad 415 tilt, the elastic arc plate 410 resets the top plate 414 and the elastic pad 415, allowing the top plate 414 and the elastic pad 415 to stably clamp the egg. During the clamping process, the damping rod 412 and the spring 413 provide elastic support for the top plate 414 and the elastic pad 415, allowing the top plate 414 and the elastic pad 415 to flexibly clamp the egg, thereby providing buffer protection for the egg.

[0022] like Figure 1 , Figure 2 , Figure 6As shown, the rotating unit includes a support frame 301, which is fixedly installed on the upper surface of the base 1. A placement cavity 302 is provided at the upper end of the support frame 301. A motor 303 is fixedly installed in the placement cavity 302. A placement frame 304 is fixedly installed on the output shaft of the motor 303. The placement frame 304 is fixedly connected to the first electrically controlled telescopic mechanism 401. The motor 303 operates using existing technology. The motor 303 drives the placement frame 304 to rotate, and the placement frame 304 drives the first electrically controlled telescopic mechanism 401 to rotate, which facilitates the adjustment of the angle of the gripping unit, so that the gripping unit can better grip and place eggs, ensuring the efficiency of egg sorting.

[0023] like Figure 8 , Figure 9 As shown, the protective unit includes a pneumatic buffer 501 and a second airbag 504. The pneumatic buffer 501 is fixedly installed inside the lower end of the feed tube 6. A baffle 502 is fixedly installed on the output end of the pneumatic buffer 501. The baffle 502 is inclined and a first airbag 503 is fixedly installed on the baffle 502. The second airbag 504 is fixedly installed on the inner wall of the feed tube 6. The pneumatic buffer 501, the first airbag 503, and the second airbag 504 operate using existing technology. The surface of the second airbag 504 is provided with flexible anti-slip particles. When the egg falls into the feed tube 6 and slides in the feed tube 6, the impact force of the egg is dispersed by the second airbag 504, reducing the reverse force on the egg, thereby protecting the egg and preventing damage. Meanwhile, the flexible anti-slip particles on the surface reduce the speed at which the egg slides on the second airbag 504, ensuring that the egg sliding down the feed tube 6 collides with the first airbag 503 at a very low speed. The first airbag 503 and the air pressure buffer 501 disperse and cushion the impact force of the egg during the collision, thus protecting the egg. Furthermore, due to the inclined design of the baffle 502, an angle is formed between the first airbag 503 and the second airbag 504, which limits the sliding egg and prevents it from flying out of the outlet on the feed tube 6, improving the safety of the egg during its descent within the feed tube 6.

[0024] like Figure 2 , Figure 9As shown, the detection unit includes a first photoelectric sensing mechanism 7 and a second photoelectric sensing mechanism 8. The first photoelectric sensing mechanism 7 is fixedly installed around the inner wall of the guide tube 6, and the second photoelectric sensing mechanism 8 is fixedly installed on the side of the lever arm 407. The first photoelectric sensing mechanism 7 and the second photoelectric sensing mechanism 8 operate using existing technology. When the egg slides in the guide tube 6, the size of the egg is detected by the first photoelectric sensing mechanism 7, which facilitates the picking and sorting of the egg. The second photoelectric sensing mechanism 8 detects the eggs on the conveying mechanism 2. When placing eggs on the conveying mechanism 2, the detection by the second photoelectric sensing mechanism 8 ensures that there are no eggs at the placement position on the conveying mechanism 2, reducing egg damage and improving the safety of egg sorting and placement.

[0025] like Figure 7 As shown, a protective frame 9 is fixedly installed on the upper surface of the support frame 301. A ball bearing 10 is rotatably installed on the upper end of the protective frame 9. The ball bearing 10 is slidably connected to the lower surface of the placement rack 304. The protective frame 9 and the ball bearing 10 support the placement rack 304. The ball bearing 10 avoids affecting the rotation of the placement rack 304, ensuring the stability of the placement rack 304 during rotation, and better sorting the eggs, avoiding damage to the eggs caused by the tilt of the placement rack 304 during the sorting process.

[0026] Working principle: such as Figure 8 , Figure 9 As shown, after the hen lays an egg, the egg enters the feed pipe 6 through the feed inlet. The second airbag 504 disperses the impact force of the egg and protects it. The flexible anti-slip particles on the surface reduce the speed at which the egg slides on the second airbag 504. The egg sliding down the feed pipe 6 collides with the first airbag 503 at a very low speed. The first airbag 503 and the air pressure buffer 501 disperse and buffer the impact force of the egg when it collides with the egg. The first airbag 503 also limits the egg and prevents the egg from flying out of the discharge port on the feed pipe 6. At the same time, as the egg slides down the feed pipe 6, the first photoelectric sensor 7 detects the size of the egg.

[0027] like Figures 1-6As shown, the second electrically controlled telescopic mechanism 403 moves the power arm 407 via the suspended weighing mechanism 404 and the mounting frame 405. The power arm 407 moves the top plate 414 and the elastic pad 415 via the pressure detection mechanism 409 and the clamping frame 411. The top plate 414 and the elastic pad 415 enter the feed pipe 6 through the outlet on the feed pipe 6. According to the size of the egg, the third electrically controlled telescopic mechanism 406 moves the traction rod 408. The traction rod 408 drives the power arm 407. The power arm 407 moves the clamping frame 411 via the pressure detection mechanism 409. The top plate 414 and the elastic pad 415 grab the egg in the feed pipe 6. The elastic pad 415, the damping rod 412, and the spring 413 provide buffer protection for the egg. The pressure detection mechanism 409 detects the clamping force, thereby controlling the clamping force on the egg.

[0028] like Figures 1-6 As shown, after the top plate 414 and elastic pad 415 clamp the egg, the second electrically controlled telescopic mechanism 403 moves in the opposite direction, causing the clamped egg to rise. During the rising process, the weight detected by the suspended weighing mechanism 404 changes. The weight of the egg is detected during the movement, and the specifications are determined based on the weight of the egg.

[0029] like Figure 1 , Figure 2 , Figure 6 , Figure 7 As shown, after the top plate 414 and elastic pad 415 have finished grabbing the eggs, the motor 303 drives the placement rack 304 to rotate, which in turn drives the first electrically controlled telescopic mechanism 401 to rotate, so that the grabbed eggs move above the conveying mechanism 2. According to the size of the eggs, the first electrically controlled telescopic mechanism 401 drives the movable frame 402 to move, and the movable frame 402 drives the second electrically controlled telescopic mechanism 403 to move, moving the eggs above different conveying mechanisms 2 according to their size. The second electrically controlled telescopic mechanism 403 then descends again, placing the eggs on the corresponding conveying mechanism 2 according to their size, thus completing the egg sorting.

[0030] like Figure 7 As shown, during the rotation of the placement rack 304, the protective frame 9 and the ball bearing 10 support the placement rack 304, improving the stability of the placement rack 304 during rotation, thereby protecting the eggs during the sorting process.

[0031] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. An egg sorting device for laying hen farming, characterized in that, Includes a base (1), a material conveying mechanism (2) is fixedly installed on the side of the base (1), a rotating unit and a guide tube (6) are fixedly installed on the upper surface of the base (1), a gripping unit is fixedly installed on the rotating unit, a protective unit is installed inside the guide tube (6), and a detection unit is fixedly installed inside both the gripping unit and the guide tube (6). The material handling unit includes a first electrically controlled telescopic mechanism (401), a lever arm (407), and an elastic arc plate (410). The first electrically controlled telescopic mechanism (401) is fixedly arranged on the rotating unit. A movable frame (402) is fixedly installed on the telescopic end of the first electrically controlled telescopic mechanism (401). A second electrically controlled telescopic mechanism (403) is fixedly installed on the movable frame (402). A suspended weighing mechanism (404) is fixedly installed on the second electrically controlled telescopic mechanism (403). An installation device is fixedly installed on the suspended weighing mechanism (404). A mounting frame (405) is fixedly mounted with a traction component. A lever arm (407) is circumferentially arrayed on the mounting frame (405). The traction component is rotatably connected to the middle position of the lever arm (407). A buffer detection component is rotatably mounted on the lower end of the lever arm (407). A top plate (414) is fixedly mounted on the buffer detection component. An elastic pad (415) is fixedly mounted on the top plate (414). The two ends of the elastic arc plate (410) are fixedly connected to the lever arm (407) and the buffer detection component.

2. The egg sorting device for laying hen farming according to claim 1, characterized in that: The traction assembly includes a third electrically controlled telescopic mechanism (406), which is fixedly installed in the mounting frame (405). A traction rod (408) is rotatably mounted on the telescopic end of the third electrically controlled telescopic mechanism (406), and the traction rod (408) is rotatably connected to the middle position of the lever arm (407).

3. The egg sorting device for laying hen farming according to claim 1, characterized in that: The buffer detection assembly includes a pressure detection mechanism (409), which is rotatably mounted on the lower end of the lever arm (407). A clamping frame (411) is fixedly mounted on the pressure detection mechanism (409), which is fixedly connected to the elastic arc plate (410). A damping rod (412) is fixedly mounted on the clamping frame (411), and a spring (413) is sleeved on the damping rod (412). The damping rod (412) is fixedly connected to the top plate (414).

4. The egg sorting device for laying hen farming according to claim 1, characterized in that: The rotating unit includes a support frame (301), which is fixedly installed on the upper surface of the base (1). The upper end of the support frame (301) is provided with a placement cavity (302), and a motor (303) is fixedly installed in the placement cavity (302). A placement frame (304) is fixedly installed on the output shaft of the motor (303), and the placement frame (304) is fixedly connected to the first electrically controlled telescopic mechanism (401).

5. The egg sorting device for laying hen farming according to claim 1, characterized in that: The protective unit includes a pneumatic buffer (501) and a second airbag (504). The pneumatic buffer (501) is fixedly installed inside the lower end of the feed tube (6). A baffle (502) is fixedly installed on the output end of the pneumatic buffer (501). The baffle (502) is inclined. A first airbag (503) is fixedly installed on the baffle (502). The second airbag (504) is fixedly installed on the inner wall of the feed tube (6).

6. The egg sorting device for laying hen farming according to claim 5, characterized in that: The detection unit includes a first photoelectric sensing mechanism (7) and a second photoelectric sensing mechanism (8). The first photoelectric sensing mechanism (7) is fixedly installed around the inner wall of the feed tube (6), and the second photoelectric sensing mechanism (8) is fixedly installed on the side of the lever arm (407).

7. The egg sorting device for laying hen farming according to claim 4, characterized in that: A protective frame (9) is fixedly installed on the upper surface of the support frame (301), and a ball bearing (10) is rotatably installed on the upper end of the protective frame (9). The ball bearing (10) is slidably connected to the lower surface of the placement frame (304).

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