Splash-proof laying hen feeding trough convenient to clean

Abstract

The utility model relates to a splash-proof laying hen feeding trough convenient to clean, the splash-proof laying hen feeding trough comprises a splash-proof feeding trough body, telescopic supporting legs and cylindrical supporting legs are symmetrically and fixedly connected to the bottoms of the two ends of the splash-proof feeding trough body respectively, and the length of the telescopic supporting legs is larger than that of the cylindrical supporting legs; one side of the splash-proof feeding trough body is fixedly connected with a water spraying cleaning mechanism, one end of the water spraying cleaning mechanism penetrates through the splash-proof feeding trough body and is located in the splash-proof feeding trough body, the outer wall of the water spraying cleaning mechanism is fixedly connected with a connecting gear, and one side of the splash-proof feeding trough body is fixedly connected with a driving mechanism; according to the scheme, when the splash-proof feeding trough is used, feed attached to the inner wall of the splash-proof feeding trough body can be soaked to be soft and then washed away in a water spraying and washing mode of the water spraying cleaning mechanism, and therefore the water spraying and washing mode of the water spraying cleaning mechanism can replace the mode that a feeding plate is controlled to move up and down to clean the feeding trough; and the cleaning effect on the splash-proof feeding trough body can be enhanced.

Description

Technical Field

[0001] This application relates to the technical field of egg-laying hen farming, and in particular to an easy-to-clean anti-splash feeding trough for egg-laying hens. Background Technology

[0002] Laying hens are a general term for chickens specifically raised for egg production. Generally, laying hens are divided into two categories: domestic laying hens and commercial laying hens. Domestic laying hens refer to those raised in small numbers by families or in rural areas, usually for personal consumption or small-scale sales. Common breeds of these laying hens include native chickens and Silkie chickens, characterized by lower egg production but better egg quality. In domestic laying hen farming, farmers generally do not have professional feeding and cleaning equipment; feed is simply placed inside the feed trough for the laying hens to eat.

[0003] Utility model CN207235827U discloses an easy-to-clean anti-splash feeding trough for laying hens, including a feeding trough body, a feed pipe, support legs, bearings, a feed plate, a rotating shaft, a top plate, a guide sleeve, a transmission ball, a cam, a motor, a support rod, and a transmission rod. The support legs are located on the lower end face of the feeding trough body, and the feed pipe is connected to the rear end face of the feeding trough body. Two bearings are symmetrically arranged on the left and right end faces inside the feeding trough body. The side end face of the feed plate is fixedly connected to the rotating shaft, and the rotating shaft is rotatably connected to the inside of the feeding trough body through the bearings. The motor is located on the rear side of the bottom end face inside the feeding trough body, and the output end of the motor is fixedly connected to the cam. The transmission rod is located inside the guide sleeve, and the transmission ball is fixed to the lower end of the transmission rod. The top plate is fixed to the upper end of the transmission rod, and the transmission ball contacts the working surface of the cam. The upper end face of the top plate reciprocates to push the feed plate under the rotation of the cam. This design achieves the purpose of anti-splash and easy cleaning, saves feed and manpower and resources, and simplifies feeding.

[0004] When the above technical solution is in use, the motor is activated, and the output of the motor drives the cam to rotate. The rotation of the cam drives the transmission ball to move up and down. The transmission ball drives the top plate to move up and down through the transmission rod. The up and down movement of the top plate pushes the feeding plate up and down, discharging excess feed from the feeding trough. This solves the problem of the difficulty in cleaning the feeding trough for laying hens and the waste of manpower in the prior art. However, when laying hens are eating, they may bring liquid left on their beaks from drinking into the inside of the feeding trough. The liquid may wet some of the feed inside the feeding trough, and the wet feed may stick to the feeding plate, which may affect the method of cleaning the feeding trough by controlling the up and down movement of the feeding plate. This is not conducive to practical use. Therefore, those skilled in the art have provided a splash-proof feeding trough for laying hens that is easy to clean, in order to solve the problems mentioned in the background art. Utility Model Content

[0005] To address the issue raised in the background art that when laying hens are feeding, they may bring liquid residue from drinking water into the feed trough, which could wet some of the feed inside the trough. The damp feed may then stick to the feed plate, potentially affecting the method of cleaning the feed trough by controlling the up and down movement of the feed plate, this application provides a splash-proof laying hen feeding trough that is easy to clean.

[0006] The present application provides a splash-proof feeding trough for laying hens that is easy to clean, and adopts the following technical solution:

[0007] A splash-proof feeding trough for laying hens that is easy to clean includes a main body. Telescopic support legs and cylindrical support legs are symmetrically fixedly connected to the bottom of both ends of the main body. The length of the telescopic support legs is greater than that of the cylindrical support legs. A water spray cleaning mechanism is fixedly connected to one side of the main body. One end of the water spray cleaning mechanism penetrates the main body and is located inside it. A connecting gear is fixedly connected to the outer wall of the water spray cleaning mechanism. A drive mechanism is fixedly connected to one side of the main body. One end of the drive mechanism penetrates the main body and meshes with the outer wall of the connecting gear.

[0008] By adopting the above technical solution, the water spraying cleaning mechanism can spray water to rinse the inner wall of the anti-splash feeding trough. At the same time, the drive mechanism is activated to control the water spraying cleaning mechanism to swing through the connecting gear, which can enhance the cleaning effect on the feed-holding part at the bottom of the inner wall of the anti-splash feeding trough. Furthermore, the water spraying cleaning mechanism can soften the feed adhering to the inner wall of the anti-splash feeding trough before rinsing it away, thereby enhancing the cleaning effect on the anti-splash feeding trough.

[0009] Preferably, the anti-splash feeding trough body includes an arc-shaped portion fixedly connected to the upper end face of the telescopic support leg and the columnar support leg. A rectangular upright plate and a rectangular inclined plate are fixedly connected to the upper surface of the arc-shaped portion. Several feeding ports are evenly opened on the rectangular inclined plate, penetrating the rectangular inclined plate. A feeding cover is movably hinged to the upper surface of the rectangular inclined plate. The lower surface of the feeding cover on the side away from the rectangular inclined plate is located on the upper surface of the rectangular upright plate. A first side plate and a second side plate are fixedly connected to both ends of the arc-shaped portion, the rectangular upright plate, and the rectangular inclined plate, respectively. A drain port is opened on the second side plate, penetrating the second side plate.

[0010] By adopting the above technical solution, the arc-shaped part can receive and place the feed, the feeding port allows the laying hen to insert its head between the rectangular inclined plate and the rectangular upright plate to eat the feed in the arc-shaped part, the feeding cover can protect the inside of the anti-splash feeding trough when closed, and the drain outlet can discharge the sewage used to rinse the arc-shaped part to the outside.

[0011] Preferably, the telescopic support leg includes a connecting tube fixedly connected to the lower surface of the arc-shaped portion, a support column slidably connected inside the connecting tube, and a wing bolt threaded onto the connecting tube, one end of the wing bolt abutting against the outer wall of the support column.

[0012] By adopting the above technical solution, the position between the connecting pipe and the support column can be adjusted using wing bolts.

[0013] Preferably, the water spray cleaning mechanism includes a water supply pipe that passes through the first side plate, one end of the water supply pipe is rotatably connected to a connecting bend, the end of the connecting bend away from the water supply pipe is fixedly connected to a water spray head, and the outer wall of the connecting bend is fixedly connected to the inner wall of the connecting gear.

[0014] By adopting the above technical solution, water can be supplied to the inside of the connecting bend through the water supply pipe, and the liquid can be transported to the spray head through the connecting bend, and then sprayed outward through the spray head.

[0015] Preferably, the driving mechanism includes a forward and reverse motor fixedly connected to one side of the first side plate, and a half gear is fixedly connected to the output end of the forward and reverse motor through the first side plate, with the outer wall of the half gear meshing with the outer wall of the connecting gear.

[0016] By adopting the above technical solution, the forward and reverse motor can be started to rotate in the forward and reverse directions by controlling the half gear, which can drive the connecting gear meshing with the half gear to rotate.

[0017] Preferably, the feeding cover has an opening through which the feeding cover passes, and a transparent plate is provided inside the opening.

[0018] By adopting the above technical solution, the viewing port combined with the transparent plate makes it easier for personnel to observe the feeding status of the laying hens.

[0019] Preferably, the half gear includes an annular plate fixedly connected to the output end of the forward and reverse motor, an arc-shaped limiting plate fixedly connected to the outer wall of the annular plate away from the connecting gear, and drive teeth that mesh with the connecting gear uniformly fixedly connected to the outer wall of the annular plate away from the arc-shaped limiting plate.

[0020] By adopting the above technical solution, when the annular plate is driven to rotate by the forward and reverse motor, the connecting gear can be controlled to rotate through several drive teeth. When it rotates to the arc-shaped limiting plate, the rotation position of the connecting gear can be restricted.

[0021] In summary, this application has the following beneficial technical effects:

[0022] 1. This easy-to-clean anti-splash feeder for laying hens has an anti-splash feeder body for placing feed for laying hens. When the anti-splash feeder body needs cleaning, the inner wall of the anti-splash feeder body can be rinsed with water by spraying water through the water spray cleaning mechanism. The drive mechanism can be activated to control the water spray cleaning mechanism to swing through the connecting gear, thereby enhancing the cleaning effect on the feed-holding part at the bottom of the inner wall of the anti-splash feeder body. In addition, the water spraying cleaning mechanism can soften the feed adhering to the inner wall of the anti-splash feeder body and then wash it away, thereby enhancing the cleaning effect on the anti-splash feeder body.

[0023] 2. This easy-to-clean anti-splash feeding trough for laying hens features an arc-shaped section for receiving feed, a feeding opening for the hen's head to extend between a rectangular inclined plate and a rectangular vertical plate to eat the feed within the arc-shaped section, a feeding cover that protects the interior of the anti-splash feeding trough when closed, a drain outlet to discharge wastewater used for rinsing the arc-shaped section, an inspection port that works with a transparent plate to allow personnel to easily observe the hen's feeding status, and the position between the connecting pipe and the support column that can be adjusted using wing bolts, thereby adjusting the overall length of the telescopic support leg.

[0024] 3. This easy-to-clean anti-splash feeding trough for laying hens can supply water to the inside of the connecting bend through the water supply pipe. The connecting bend can then deliver the liquid to the spray head, from which it is sprayed outwards. Activating the forward and reverse motor controls the rotation of the ring plate. As the ring plate rotates, several drive teeth control the rotation of the connecting gear. When the gear rotates to the arc-shaped limit plate, it restricts the rotation position of the connecting gear. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the overall structure of an embodiment of this application;

[0026] Figure 2 This is a partial main section diagram of the embodiment of this application;

[0027] Figure 3 This is a schematic diagram of the left cross-section structure in an embodiment of this application;

[0028] Figure 4 This is a schematic diagram of the half-gear structure in an embodiment of this application.

[0029] Explanation of reference numerals in the attached drawings: 1. Splash-proof feeding trough body; 101. Arc-shaped part; 102. Rectangular upright plate; 103. Rectangular inclined plate; 104. Feeding port; 105. Feeding cover; 106. First side plate; 107. Second side plate; 108. Drain outlet; 2. Telescopic support leg; 201. Connecting pipe; 202. Support column; 203. Wing bolt; 3. Column-shaped support leg; 4. Water spray cleaning mechanism; 401. Water supply pipe; 402. Connecting bend; 403. Spray head; 5. Connecting gear; 6. Drive mechanism; 601. Forward and reverse motor; 602. Half gear; 6021. Annular plate; 6022. Arc-shaped limiting plate; 6023. Drive gear; 7. Viewing port; 8. Transparent plate. Detailed Implementation

[0030] The following is combined with Figure 1-4 This application is described in further detail.

[0031] This application discloses an easy-to-clean, splash-proof feeding trough for laying hens. (See also...) Figure 1 and Figure 2 The easy-to-clean anti-splash feeding trough for laying hens includes an anti-splash feeding trough body 1. Telescopic support legs 2 and columnar support legs 3 are symmetrically fixedly connected to the bottom of both ends of the anti-splash feeding trough body 1, respectively. The length of the telescopic support legs 2 is greater than that of the columnar support legs 3. A water spray cleaning mechanism 4 is fixedly connected to one side of the anti-splash feeding trough body 1. One end of the water spray cleaning mechanism 4 penetrates the anti-splash feeding trough body 1 and is located inside the anti-splash feeding trough body 1. A connecting gear 5 is fixedly connected to the outer wall of the water spray cleaning mechanism 4. A drive mechanism 6 is fixedly connected to one side of the anti-splash feeding trough body 1. One end of the drive mechanism 6 penetrates the anti-splash feeding trough body 1 and meshes with the outer wall of the connecting gear 5.

[0032] In this embodiment, the splash-proof feeding trough body 1 of the easy-to-clean anti-splash feeding trough is used to hold chicken feed for the laying hens. Symmetrically arranged telescopic support legs 2 and symmetrically arranged columnar support legs 3 support the anti-splash feeding trough body 1, allowing the bottom of the anti-splash feeding trough body 1 to be suspended in the air during use. This facilitates cleaning of the bottom of the anti-splash feeding trough body 1. The telescopic support legs 2 are longer than the columnar support legs 3, ensuring that the side of the anti-splash feeding trough body 1 closest to the telescopic support legs 2 is higher than the side closest to the columnar support legs 3 during use. When the anti-splash feeding trough body 1 needs cleaning, the user can directly connect one end of the water spray cleaning mechanism 4 to a faucet or connect it to a water source via a water pump. The use of the water spray cleaning mechanism 4 allows for cleaning of the anti-splash feeding trough body 1. The inner wall of the feed trough is sprayed with water for rinsing. At the same time, the inclined anti-splash feed trough body 1 can also facilitate the discharge of sewage inside the anti-splash feed trough body 1. When this application is used, the feed adhering to the inner wall of the anti-splash feed trough body 1 can be softened and then washed away by the water spraying cleaning mechanism 4. This allows the water spraying cleaning mechanism 4 to replace the method of controlling the feeding plate to move up and down to clean the feed trough, which can enhance the cleaning effect on the anti-splash feed trough body 1 and make this application more conducive to practical use. Furthermore, a drive mechanism 6 is provided on the anti-splash feed trough body 1. When the drive mechanism 6 is started, it can cooperate with the connecting gear 5 to control the water spraying cleaning mechanism 4 to swing inside the anti-splash feed trough body 1, thereby enhancing the cleaning effect on the feed-containing part at the bottom of the inner wall of the anti-splash feed trough body 1.

[0033] In a further preferred embodiment of this utility model, such as Figure 1 , Figure 2 and Figure 4 As shown, the anti-splash feeding trough body 1 includes an arc-shaped part 101 fixedly connected to the upper end face of the telescopic support leg 2 and the columnar support leg 3. A rectangular vertical plate 102 and a rectangular inclined plate 103 are fixedly connected to the upper surface of the arc-shaped part 101. Several feeding ports 104 are evenly opened on the rectangular inclined plate 103, which penetrates the rectangular inclined plate 103. A feeding cover 105 is movably hinged to the upper surface of the rectangular inclined plate 103. The lower surface of the feeding cover 105 on the side away from the rectangular inclined plate 103 is located on the upper surface of the rectangular vertical plate 102. A first side plate 106 and a second side plate 107 are fixedly connected to the two ends of the arc-shaped part 101, the rectangular vertical plate 102 and the rectangular inclined plate 103, respectively. A drain port 108 is opened on the second side plate 107, which penetrates the second side plate 107.

[0034] In this embodiment, a strip-shaped feeding trough can be formed by the arc-shaped part 101, the rectangular upright plate 102, the rectangular inclined plate 103, the first side plate 106, and the second side plate 107. The feeding opening is located between the rectangular upright plate 102 and the rectangular inclined plate 103. The arc-shaped part 101 can receive the fed feed. Several feeding openings 104 are evenly distributed on the rectangular inclined plate 103. The feeding openings 104 are circular, allowing the laying hen's head to extend between the rectangular inclined plate 103 and the rectangular upright plate 102 to eat the feed in the arc-shaped part 101. When the laying hen is eating, its neck... The feed can be attached to the inside of the feeding opening 104 to prevent feed from splashing out of the feeding opening 104, thus achieving the effect of anti-splash feed. Furthermore, a feeding cover 105 is movably hinged to the upper surface of the rectangular inclined plate 103. The feeding cover 105 can be opened and closed as needed. When the feeding cover 105 is closed, it can provide a certain degree of protection for the inside of the anti-splash feed trough body 1, preventing laying hens from directly entering the anti-splash feed trough body 1 from the feeding opening. The wastewater used to rinse the arc-shaped part 101 can be discharged outward through the drain outlet 108.

[0035] In a further preferred embodiment of this utility model, such as Figure 1 , Figure 2 and Figure 3 As shown, the telescopic support leg 2 includes a connecting pipe 201 fixedly connected to the lower surface of the arc-shaped part 101. A support column 202 is slidably connected inside the connecting pipe 201. A wing bolt 203 is threadedly connected to the connecting pipe 201. One end of the wing bolt 203 abuts against the outer wall of the support column 202.

[0036] In this embodiment, the position between the connecting pipe 201 and the support column 202 can be adjusted by using the wing bolt 203, thereby adjusting the overall length of the telescopic support leg 2 and changing the inclination of the arc-shaped part 101.

[0037] In a further preferred embodiment of this utility model, such as Figure 1 and Figure 2 As shown, the water spray cleaning mechanism 4 includes a water supply pipe 401 that passes through the first side plate 106. One end of the water supply pipe 401 is rotatably connected to a connecting bend 402. The end of the connecting bend 402 away from the water supply pipe 401 is fixedly connected to a water spray head 403. The outer wall of the connecting bend 402 is fixedly connected to the inner wall of the connecting gear 5.

[0038] In this embodiment, one end of the water supply pipe 401 can be connected to a faucet. Water can be supplied to the inside of the connecting bend pipe 402 through the water supply pipe 401. The connecting bend pipe 402 can deliver the liquid to the spray head 403 and then spray it outward through the spray head 403. Furthermore, the setting of the connecting bend pipe 402 allows the spray head 403 to spray water directly towards the inner wall of the arc-shaped part 101, thereby enhancing the rinsing effect on the arc-shaped part 101.

[0039] In a further preferred embodiment of this utility model, such as Figure 1 and Figure 2 As shown, the drive mechanism 6 includes a forward and reverse motor 601 fixedly connected to one side of the first side plate 106. The output end of the forward and reverse motor 601 is fixedly connected to a half gear 602 through the first side plate 106. The outer wall of the half gear 602 meshes with the outer wall of the connecting gear 5.

[0040] In this embodiment, starting the forward and reverse motor 601 can control the half gear 602 to rotate in both directions, and the rotation of the half gear 602 can drive the connecting gear 5 that meshes with it to rotate.

[0041] In a further preferred embodiment of this utility model, such as Figure 1 and Figure 3 As shown, the feeding cover 105 has a viewing opening 7 that passes through the feeding cover 105, and a transparent plate 8 is provided inside the viewing opening 7.

[0042] In this embodiment, the viewing port 7, in conjunction with the transparent plate 8, allows personnel to easily observe the feeding status of the laying hens.

[0043] In a further preferred embodiment of this utility model, such as Figure 2 and Figure 4 As shown, the half gear 602 includes an annular plate 6021 fixedly connected to the output end of the forward and reverse motor 601. An arc-shaped limiting plate 6022 is fixedly connected to the outer wall of the annular plate 6021 on the side away from the connecting gear 5. Drive teeth 6023 that mesh with the connecting gear 5 are uniformly fixedly connected to the outer wall of the annular plate 6021 on the side away from the arc-shaped limiting plate 6022.

[0044] In this embodiment, the installation positions of the arc-shaped limiting plate 6022 and several driving teeth 6023 can be limited by the annular plate 6021. When the annular plate 6021 is driven to rotate by the forward and reverse motor 601, the connecting gear 5 can be controlled to rotate by the several driving teeth 6023. When it rotates to the part of the arc-shaped limiting plate 6022, the rotation position of the connecting gear 5 can be limited.

[0045] The implementation principle of the easy-to-clean anti-splash feeding trough for laying hens in this application embodiment is as follows:

[0046] In use, chicken feed is placed inside the anti-splash feeding trough 1 for laying hens. When the anti-splash feeding trough 1 needs cleaning, the water spray cleaning mechanism 4 can spray water to rinse the inner wall of the anti-splash feeding trough 1. At the same time as the water spray rinsing, the tilted anti-splash feeding trough 1 facilitates the discharge of sewage from inside the anti-splash feeding trough 1. When the water spray cleaning mechanism 4 is activated, the drive mechanism 6 is started and, in cooperation with the connecting gear 5, can control the water spray cleaning mechanism 4 to swing, thereby enhancing the cleaning effect on the feed-holding area at the bottom of the inner wall of the anti-splash feeding trough 1. This application uses the water spray cleaning mechanism 4 to rinse and soften the feed adhering to the inner wall of the anti-splash feeding trough 1 before rinsing it away. This allows the water spray cleaning mechanism 4 to replace the method of controlling the feeding plate to move up and down to clean the trough, thereby enhancing the cleaning effect on the anti-splash feeding trough 1 and making this application more practical.

[0047] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A splash-proof feeding trough for laying hens that is easy to clean, comprising a splash-proof feeding trough body (1), characterized in that: The bottom of both ends of the anti-splash feeding trough body (1) is symmetrically fixed with telescopic support legs (2) and columnar support legs (3). The length of the telescopic support legs (2) is greater than that of the columnar support legs (3). A water spraying cleaning mechanism (4) is fixedly connected to one side of the anti-splash feeding trough body (1). One end of the water spraying cleaning mechanism (4) penetrates the anti-splash feeding trough body (1) and is located inside the anti-splash feeding trough body (1). A connecting gear (5) is fixedly connected to the outer wall of the water spraying cleaning mechanism (4). A driving mechanism (6) is fixedly connected to one side of the anti-splash feeding trough body (1). One end of the driving mechanism (6) penetrates the anti-splash feeding trough body (1) and meshes with the outer wall of the connecting gear (5).

2. The splash-proof feeding trough for laying hens that is easy to clean according to claim 1, characterized in that: The anti-splash feeding trough body (1) includes an arc-shaped part (101) fixedly connected to the upper end face of the telescopic support leg (2) and the columnar support leg (3). A rectangular vertical plate (102) and a rectangular inclined plate (103) are fixedly connected to the upper surface of the arc-shaped part (101). Several feeding ports (104) are evenly opened on the rectangular inclined plate (103) and pass through the rectangular inclined plate (103). A feeding device is movably hinged to the upper surface of the rectangular inclined plate (103). The feeding cover (105) has its lower surface on the side away from the rectangular inclined plate (103) located on the upper surface of the rectangular upright plate (102). The arc-shaped part (101), the rectangular upright plate (102) and the rectangular inclined plate (103) are respectively fixedly connected to a first side plate (106) and a second side plate (107). The second side plate (107) has a drain hole (108) that passes through it.

3. The splash-proof feeding trough for laying hens that is easy to clean according to claim 2, characterized in that: The telescopic support leg (2) includes a connecting pipe (201) fixedly connected to the lower surface of the arc-shaped part (101), a support column (202) is slidably connected inside the connecting pipe (201), and a wing bolt (203) is threadedly connected to the connecting pipe (201), with one end of the wing bolt (203) abutting against the outer wall of the support column (202).

4. The easy-to-clean anti-splash feeding trough for laying hens according to claim 2, characterized in that: The water spray cleaning mechanism (4) includes a water supply pipe (401) that passes through the first side plate (106). One end of the water supply pipe (401) is rotatably connected to a connecting bend (402). The end of the connecting bend (402) away from the water supply pipe (401) is fixedly connected to a water spray head (403). The outer wall of the connecting bend (402) is fixedly connected to the inner wall of the connecting gear (5).

5. The easy-to-clean anti-splash feeding trough for laying hens according to claim 2, characterized in that: The drive mechanism (6) includes a forward and reverse motor (601) fixedly connected to one side of the first side plate (106). The output end of the forward and reverse motor (601) is fixedly connected to a half gear (602) through the first side plate (106). The outer wall of the half gear (602) meshes with the outer wall of the connecting gear (5).

6. The splash-proof feeding trough for laying hens that is easy to clean according to claim 2, characterized in that: The feeding cover (105) has an opening (7) through which the feeding cover (105) passes, and a transparent plate (8) is provided inside the opening (7).

7. The easy-to-clean anti-splash feeding trough for laying hens according to claim 5, characterized in that: The half gear (602) includes an annular plate (6021) fixedly connected to the output end of the forward and reverse motor (601). An arc-shaped limiting plate (6022) is fixedly connected to the outer wall of the annular plate (6021) away from the connecting gear (5). A drive tooth (6023) that meshes with the connecting gear (5) is uniformly fixedly connected to the outer wall of the annular plate (6021) away from the arc-shaped limiting plate (6022).

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