A robot for overturning and cleaning feed sheds

Abstract

This utility model discloses a feed overturning and cleaning robot for cattle sheds, including a feed overturning component, a moving platform, a lifting component, a residual feed collection component, and a lifting pump. The feed overturning component is positioned at the front end of the moving platform in the forward direction via the lifting component, and is used to overturn the feed. The residual feed collection component is located inside the moving platform and is connected to the moving platform via the lifting pump. A lifting window is provided at the bottom of the moving platform, and the residual feed collection component, propelled by the lifting pump, passes through the lifting window to collect residual feed from the ground. First, the lifting component raises and lowers the feed overturning component to a suitable position. Then, the moving platform drives all components to move, overturning the feed using the feed overturning component. Finally, the feed collection component collects the residual feed after overturning, effectively avoiding secondary cleaning and improving work efficiency.

Description

Technical Field

[0001] This utility model relates to the field of livestock machinery and equipment, and in particular to a robot for overturning and cleaning feed in cattle sheds. Background Technology

[0002] In livestock farming, cattle feeding typically involves placing feed at the edge of the enclosure. However, due to instinctive behavior, cattle often push the feed away from the enclosure or trough during feeding. To ensure unobstructed access to food, the feed must be pushed back to its initial position. However, in large-scale farming environments, relying on manual labor for this task is inefficient. To address this issue, automated feed-pushing robots are being adopted to perform this task. Nevertheless, existing feed-pushing robots primarily rely on traditional techniques such as screw conveyors and side brush cleaning to complete the operation.

[0003] For example, patent CN113424773A discloses a smart grass-tipping and environmental factor detection robot for cattle farms. It uses a solution where grass-tipping (auger) device and a cleaning (side brush) device are respectively set at the front and bottom of the mobile platform to perform the grass-tipping work.

[0004] In actual feed delivery processes, feed cannot be completely concentrated, resulting in some feed residue on the roads that cannot be fully consumed by the cattle. Furthermore, different farms use a wide variety of feeds with varying particle sizes. Although traditional auger and side-brush feed delivery robots can perform some delivery work, their delivery effect is not ideal, failing to push the feed completely to one side, leaving feed residue on the roads inside the cattle shed, requiring secondary processing. Additionally, most traditional feed delivery robots lack lifting capabilities, making them unsuitable for the different operating environments of various cattle sheds. Therefore, using traditional feed delivery robots is unlikely to effectively improve feed utilization, reduce feed loss, or lower energy consumption.

[0005] Therefore, how to achieve a multi-functional composite of overturning robots, with high overturning efficiency, high feed utilization, and adaptability to various cattle pen environments, is a technical problem that needs to be solved. Utility Model Content

[0006] This invention addresses the problem of feed residue left when robots overturn feed in existing technologies by proposing a feed overturning and cleaning robot for cattle sheds. This robot can clean up feed materials while overturning feed, thus avoiding secondary work and improving work efficiency.

[0007] To achieve the above objectives, the present invention adopts the following technical solution: A feed overturning and cleaning robot for cattle sheds includes a feed overturning component, a moving platform, a lifting component, a residual feed collection component, and a lifting pump. The feed overturning component is located at the front end of the moving platform in the forward direction via the lifting component, and is used to overturn the feed. The residual feed collection component is located inside the moving platform and is connected to the moving platform via the lifting pump. The bottom of the moving platform has a lifting window, and the residual feed collection component passes through the lifting window under the push of the lifting pump to absorb residual feed from the ground.

[0008] In the above technical solution, the mobile platform is first moved to the starting position of the work, the lifting component is activated, the overturning component is lowered to the appropriate position, the overturning component is activated, and the feed is overturned towards the fence of the cattle shed. During the overturning process, the mobile platform will drive all components to move, thereby pushing all the feed towards the fence; at the same time, the lifting component will drive the residual feed recovery component to descend, extend from inside the mobile platform, pass through the lifting window, and recover the feed remaining on the ground.

[0009] Preferably, the overturning material assembly includes a conveying mechanism, a side brush mechanism, and a support frame; the support frame is connected to the mobile platform via a lifting assembly, which is used to drive the support frame to move up and down; both the conveying mechanism and the side brush mechanism are mounted on the support frame, and the side brush mechanism is closer to the mobile platform than the conveying mechanism.

[0010] Preferably, the conveying mechanism includes a support plate, an auger, and a first drive motor; the number of support plates is two and they are symmetrically arranged on both sides of the support frame; the auger is arranged between the two support plates and is rotatably connected to the support plates; the first drive motor is fixed to the support frame; the output shaft of the first drive motor is connected to the auger through a transmission belt and is used to drive the auger to rotate and overturn the feed.

[0011] Preferably, the side brush mechanism includes a side brush, rollers, and a second drive motor; there are two rollers, and the roller shafts are rotatably connected to the support frame; the second drive motor is mounted on the support frame; the output shaft of the second drive motor is connected to the roller shafts via a transmission belt.

[0012] Preferably, the residual material recycling assembly includes a housing, a cleaning assembly, a suction assembly, and a lifting pump; the cleaning assembly is located at the bottom of the housing and is used to clean up accumulated residual feed; the bottom of the housing is provided with a suction port, and the suction assembly is located inside the housing and communicates with the suction port; the housing is connected to the interior of the moving platform through the lifting pump, and the housing passes through the lifting window to clean up residual feed under the drive of the lifting pump.

[0013] Preferably, the suction assembly includes a roller brush, a roller brush box, a third drive motor, an S-shaped pipe, a storage box, an air baffle, and a fan; the roller brush box is connected to the suction port, and the roller brush is rotatably connected to the inner wall of the roller brush box; the third drive motor is disposed inside the housing, and the output shaft of the third drive motor is connected to the roller brush via a transmission belt; one end of the S-shaped pipe is connected to the roller brush box, and the other end is connected to the storage box; the air intake of the fan is connected to the storage box, and the connection position is located above the connection between the S-shaped pipe and the storage box; and the air baffle is disposed between the connection between the fan and the storage box and the connection between the S-shaped pipe and the storage box.

[0014] Preferably, the air baffle divides the storage box into a storage compartment and an air duct compartment; a quick-release box is slidably connected inside the storage compartment, and the quick-release box is used to hold feed; the storage box is also provided with a limit lever, and the limit lever is used to limit the displacement of the quick-release box.

[0015] Preferably, the ports at both ends of the S-shaped pipe, the connection port between the storage box and the S-shaped pipe, the connection port between the storage box and the fan, and the ventilation holes on the baffle plate are all the same size.

[0016] Preferably, the cleaning assembly includes a brush and a fourth drive motor, the fourth drive motor being disposed inside the housing, and the output shaft of the fourth drive motor passing through the bottom of the housing; the brush is connected to the output end of the fourth drive motor.

[0017] Preferably, the lifting assembly includes a lifting motor, a fixed plate, a sliding block, a lead screw, and a slider; the sliding block is vertically mounted on the moving platform; there are two fixed plates, which are located at both ends of the sliding block; the lifting motor is connected to the fixed plate, and the output end of the lifting motor passes through the fixed plate; one end of the lead screw is rotatably connected to the fixed plate, and the other end is fixedly connected to the output end of the lifting motor; the slider is slidably connected to the sliding block and threadedly engaged with the lead screw; and the overturning assembly is connected to the slider.

[0018] This utility model has the following beneficial effects: 1. By combining the feed overturning component and the residual feed recycling component, the system can not only overturn the feed but also clean up any residual feed, avoiding secondary operations and thus improving work efficiency. 2. Depending on the operating conditions, the overturning component or the waste material recycling component can be used alone or in combination to meet different usage scenarios. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2This is a schematic diagram showing the connection between the waste material recycling component and the mobile platform in this utility model; Figure 3 This is a schematic diagram showing the connection between the lifting component and the mobile platform in this utility model; Figure 4 This is a schematic diagram of the internal structure of the overturning feed assembly in this utility model; Figure 5 This is a schematic diagram of the residual material recycling component in this utility model; Figure 6 This is a schematic diagram of the internal structure of the waste recycling component in this utility model; Figure 7 This is a perspective view of the storage box of the waste material recycling component in this utility model; Figure 8 This is a schematic diagram of the lifting component structure in this utility model.

[0020] Legend: 1. Overturning material assembly; 11. Conveying mechanism; 111. Support plate; 112. Screwdriver; 113. First drive motor; 12. Side brush mechanism; 121. Side brush; 122. Roller; 123. Second drive motor; 13. Support frame; 2. Mobile platform; 3. Lifting assembly; 31. Lifting motor; 32. Fixing plate; 33. Sliding block; 34. Lead screw; 35. Sliding block; 4. Residual material recycling assembly; 41. Housing; 42. Cleaning assembly; 43. Suction assembly; 431. Roller brush; 432. Roller brush box; 433. Third drive motor; 434. S-shaped pipe; 435. Storage box; 4351. Air duct chamber; 4352. Storage chamber; 4353. Limiting paddle; 436. Air baffle; 437. Fan; 44. Lifting pump. Detailed Implementation

[0021] The accompanying drawings are for illustrative purposes only and should not be construed as limiting this patent. To better illustrate this embodiment, some components in the drawings may be omitted, enlarged, or reduced, and do not represent the actual dimensions of the product. It is understandable to those skilled in the art that some well-known structures and their descriptions may be omitted in the drawings. The positional relationships described in the drawings are for illustrative purposes only and should not be construed as limiting this patent.

[0022] In the accompanying drawings of this utility model, the same or similar reference numerals correspond to the same or similar components. In the description of this utility model, it should be understood that if terms such as "upper," "lower," "left," "right," "long," and "short" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, they are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the terms used to describe positional relationships in the drawings are only for illustrative purposes and should not be construed as limiting this patent. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0023] The technical solution of this utility model will be further described in detail below through specific embodiments and with reference to the accompanying drawings: Example 1: like Figures 1-3 As shown, a feed overturning and cleaning robot for cattle sheds includes a feed overturning component 1, a mobile platform 2, a lifting component 3, a residual feed collection component 4, and a lifting pump 44. The feed overturning component 1 is located at the front end of the mobile platform 2 in the forward direction via the lifting component 3, and is used to overturn the feed. The residual feed collection component 4 is located inside the mobile platform 2 and is connected to the mobile platform 2 via the lifting pump 44. The bottom of the mobile platform 2 has a lifting window, and the residual feed collection component 4 passes through the lifting window under the push of the lifting pump 44 to absorb residual feed on the ground.

[0024] The working principle of this embodiment is as follows: First, the mobile platform 2 moves to the starting position, and the lifting component 3 is activated to raise and lower the feed-discarding component 1 to a suitable position. Then, the mobile platform 2 begins to move, and the feed-discarding component 1 is activated again to push the feed towards the fence of the cattle shed, thus pushing all the feed towards the fence. At the same time, the lifting component 3 simultaneously drives the residual feed recovery component 4 to descend, extending from inside the mobile platform 2 and passing through the lifting window to recover the feed remaining on the ground. In addition, depending on the actual usage, if only the feed-discarding component needs to be pushed, the residual feed recovery component 4 is not activated; conversely, if it is necessary to clean the feed in the cattle shed, the residual feed recovery component 4 is activated, but the feed-discarding component 1 is not activated.

[0025] The beneficial effects of this embodiment are: by combining the feed overturning component 1 and the residual material recycling component 4, it is possible to ensure that the feed is overturned while ensuring that there is no feed residue on the road, thus avoiding secondary operations and improving work efficiency.

[0026] Example 2: like Figure 2 , 4As shown, another embodiment of a feed overturning and cleaning robot for cattle sheds is based on embodiment 1. The main difference between the two embodiments is that the feed overturning assembly 1 includes a conveying mechanism 11, a side brushing mechanism 12, and a support frame 13. The support frame 13 is connected to the mobile platform 2 through a lifting assembly 3, which is used to drive the support frame 13 to move up and down. The conveying mechanism 11 and the side brushing mechanism 12 are both mounted on the support frame 13, and the side brushing mechanism 12 is closer to the mobile platform 2 than the conveying mechanism 11.

[0027] The conveying mechanism 11 includes a support plate 111, an auger 112, and a first drive motor 113. There are two support plates 111, which are symmetrically arranged on both sides of the support frame 13. The auger 112 is arranged between the two support plates 111 and is rotatably connected to the support plates 111. The first drive motor 113 is fixedly connected to the support frame 13. The output shaft of the first drive motor 113 is connected to the auger 112 via a transmission belt and is used to drive the auger 112 to rotate and overturn the feed.

[0028] The side brush mechanism 12 includes a side brush 121, a roller 122, and a second drive motor 123. There are two rollers 122, and the rotating shaft of the roller 122 is rotatably connected to the support frame 13. The side brush 121 is sleeved on the roller 122. The second drive motor 123 is mounted on the support frame 13. The output shaft of the second drive motor 123 is connected to the rotating shaft of the roller 122 via a transmission belt.

[0029] The working principle of this embodiment is as follows: When it is necessary to overturn the feed, the lifting component 3 is first used to lower the overturning component 1 to a suitable position, that is, the blades of the auger 112 are inserted into the feed; then the first drive motor 113 is started, which drives the auger 112 to rotate. When the auger 112 rotates, it will overturn the feed towards the side of the fence, making it easier for the cattle to eat; after the auger 112 overturns the feed, some feed will remain on the ground. As the moving platform 2 moves, it will come into contact with the side brush mechanism 12. At this time, the second drive motor 123 is started, which drives the roller 122 to rotate, thereby driving the side brush 121 to sweep the ground and sweep the residue towards the cattle pen fence.

[0030] The beneficial effects of this embodiment are: when it is necessary to overturn the feed, the cooperation between the conveying component and the side brush 121 component can reduce the occurrence of feed residue on the ground.

[0031] Example 3: like Figure 2 , 5As shown in Figure 7, another embodiment of a feed overturning and cleaning robot for cattle sheds is based on embodiment 1. The main difference between this embodiment and the previous one is that the residual material recycling component 4 includes a housing 41, a sweeping component 42, a suction component 43, and a lifting pump 44. The sweeping component 42 is located at the bottom of the housing 41 and is used to sweep up accumulated feed. A suction port is provided at the bottom of the housing 41, and the suction component 43 is located inside the housing 41 and communicates with the suction port. The housing 41 is connected to the interior of the moving platform 2 through the lifting pump 44, and the housing 41 passes through the lifting window to clean up residual feed under the drive of the lifting pump 44.

[0032] The material suction assembly 43 includes a roller brush 431, a roller brush box 432, a third drive motor 433, an S-shaped pipe 434, a storage box 435, an air baffle plate, and a blower 437. The roller brush box 432 is connected to the suction port, and the inner wall of the roller brush 431 and the roller brush box 432 are rotatably connected. The third drive motor 433 is located inside the housing 41, and the output shaft of the third drive motor 433 is connected to the roller brush 431 via a transmission belt. One end of the S-shaped pipe 434 is connected to the roller brush box 432, and the other end is connected to the storage box 435. The air intake of the blower 437 is connected to the storage box, and the connection position is located above the connection between the S-shaped pipe 434 and the storage box 435. Ventilation holes are opened on the air baffle plate, and the air baffle plate 436 is located between the connection between the blower 437 and the storage box 435 and the connection between the S-shaped pipe 434 and the storage box 435.

[0033] The baffle plate divides the storage box 435 into a storage compartment and an air duct compartment 4351; a quick-release box is slidably connected to the storage compartment, and the quick-release box is used to hold feed; a limit switch is also provided on the storage box 435, and the limit switch is used to limit the displacement of the quick-release box.

[0034] The ports at both ends of the S-shaped pipe 434, the connection port between the storage box 435 and the S-shaped pipe 434, the connection port between the storage box 435 and the fan 437, and the ventilation holes on the baffle plate are all the same size.

[0035] The cleaning assembly 42 includes a fourth drive motor 421 and a brush 422; the fourth drive motor 421 is disposed inside the housing 41, and the output shaft of the fourth drive motor 421 passes through the bottom of the housing 41; the brush 422 is connected to the output end of the fourth drive motor 421.

[0036] Working principle of this embodiment: After the feed is overturned by the overturning component, some feed residue will inevitably remain on the ground. At this time, the residual material collection component 4 is extended from the inside of the moving platform 2 by the lifting pump 44 until the brush 422 contacts the ground and the cleaning part of the brush 422 is slightly deformed. Then, the fourth drive motor 421 is started, and the brush 422 sweeps the residual feed on the ground to the middle position. When the accumulated residual material reaches the suction port, the third drive motor 433 and the blower 437 are started. At this time, the roller brush 431 and the blower 437... When in the open state, smaller feed particles are directly sucked into the S-shaped pipe 434, while longer or larger feed particles are sucked into the S-shaped pipe 434 by the roller brush 431. Under the influence of the suction of the fan 437, the mixture of feed and airflow will first collide with the inner wall of the storage chamber below the baffle plate. At this time, the particles will fall into the storage chamber due to gravity, while the airflow will flow to the fan 437. After working for a period of time, the storage chamber is full of feed. The limit switch can be opened to remove the quick-release box from the storage chamber and then the empty quick-release box can be put in.

[0037] The beneficial effects of this embodiment are: the cleaning component 42 cleans up the residual feed and piles it up, and then the suction component 43 sucks the residual feed into the storage box 435, which effectively avoids the problem of feed residue after being overturned, avoids secondary work, and effectively reduces labor intensity.

[0038] Example 4: like Figure 3 , 8 As shown, another embodiment of a feed overturning and cleaning robot for cattle sheds is shown. Based on embodiment 1, the main difference is that the lifting assembly 3 includes a lifting motor 31, a fixed plate 32, a sliding block 33, a lead screw 34, and a slider 35. The sliding block 33 is vertically mounted on the moving platform 2. There are two fixed plates 32, located at both ends of the sliding block 33. The lifting motor 31 is connected to the fixed plate 32, and the output end of the lifting motor 31 passes through the fixed plate 32. One end of the lead screw 34 is rotatably connected to the fixed plate 32, and the other end is fixedly connected to the output end of the lifting motor 31. The slider 35 is slidably connected to the sliding block 33 and threadedly engaged with the lead screw 34. The feed overturning assembly 1 is connected to the slider 35.

[0039] The working principle of this embodiment is as follows: When it is necessary to adjust the position of the overturning material assembly 1, the lifting motor 31 is started, and the lifting motor 31 drives the lead screw 34 to rotate. When the lead screw 34 rotates, it will drive the slider 35 to move up and down along the slide block 33. When the slide block 33 moves, it will also drive the overturning material assembly 1 to move up and down, thereby realizing the position adjustment of the overturning material assembly 1.

[0040] The beneficial effects of this embodiment are: by adjusting the position of the overturning and feeding component 1 by the lifting component 3, it can adapt to more working scenarios, improve the flexibility and applicability of the robot, reduce manual intervention, and further optimize the work process.

[0041] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A robot for overturning and cleaning feed sheds, characterized in that, The system includes a feed overturning assembly (1), a mobile platform (2), a lifting assembly (3), a waste material recycling assembly (4), and a lifting pump (44). The feed overturning assembly (1) is located at the front end of the mobile platform (2) in the forward direction via the lifting assembly (3), and the feed overturning assembly (1) is used to overturn the feed. The waste material recycling assembly (4) is located inside the mobile platform (2), and the waste material recycling assembly (4) is connected to the mobile platform (2) via the lifting pump (44). The bottom of the mobile platform (2) has a lifting window, and the waste material recycling assembly (4) passes through the lifting window under the push of the lifting pump (44) to absorb the waste material on the ground.

2. The cattle shed feed overturning and cleaning robot according to claim 1, characterized in that, The overturning material assembly (1) includes a conveying mechanism (11), a side brushing mechanism (12), and a support frame (13); the support frame (13) is connected to the mobile platform (2) through a lifting assembly (3), and the lifting assembly (3) is used to drive the support frame (13) to move up and down; the conveying mechanism (11) and the side brushing mechanism (12) are both set on the support frame (13), and the side brushing mechanism (12) is closer to the mobile platform (2) than the conveying mechanism (11).

3. The cattle shed feed overturning and cleaning robot according to claim 2, characterized in that, The conveying mechanism (11) includes a support plate (111), an auger (112), and a first drive motor (113). There are two support plates (111) symmetrically arranged on both sides of the support frame (13). The auger (112) is arranged between the two support plates (111) and is rotatably connected to the support plates (111). The first drive motor (113) is fixed to the support frame (13). The output shaft of the first drive motor (113) is connected to the auger (112) through a transmission belt. The first drive motor (113) is used to drive the auger (112) to rotate and overturn the feed.

4. The cattle shed feed overturning and cleaning robot according to claim 2, characterized in that, The side brush mechanism (12) includes a side brush (121), a roller (122), and a second drive motor (123); there are two rollers (122), and the rotating shaft of the rollers (122) is rotatably connected to the support frame (13); the side brush (121) is sleeved on the rollers (122); the second drive motor (123) is mounted on the support frame (13); the output shaft of the second drive motor (123) is connected to the rotating shaft of the rollers (122) via a transmission belt.

5. The cattle shed feed overturning and cleaning robot according to claim 1, characterized in that, The residual material recycling component (4) includes a housing (41), a cleaning component (42), a suction component (43), and a lifting pump (44); the cleaning component (42) is located at the bottom of the housing (41) and is used to clean up accumulated feed; a suction port is provided at the bottom of the housing (41), and the suction component (43) is located inside the housing (41) and connected to the suction port; the housing (41) is connected to the interior of the moving platform (2) through the lifting pump (44), and the housing (41) passes through the lifting window to clean up residual feed under the drive of the lifting pump (44).

6. The cattle shed feed overturning and cleaning robot according to claim 5, characterized in that, The suction assembly (43) includes a roller brush (431), a roller brush box (432), a third drive motor (433), an S-shaped pipe (434), a storage box (435), an air baffle (436), and a blower (437); the roller brush box (432) is connected to the suction port, and the roller brush (431) is rotatably connected to the inner wall of the roller brush box (432); the third drive motor (433) is located inside the housing (41), and the output shaft of the third drive motor (433) is connected to the roller brush (431) via a transmission belt. Connection; one end of the S-shaped pipe (434) is connected to the roller brush box (432), and the other end is connected to the storage box (435); the air inlet of the fan (437) is connected to the storage box (435), and the connection position is located above the connection between the S-shaped pipe (434) and the storage box (435); ventilation holes are opened on the baffle plate (436), and the baffle plate (436) is set between the connection between the fan (437) and the storage box (435) and the connection between the S-shaped pipe (434) and the storage box (435).

7. A cattle shed feed overturning and cleaning robot according to claim 6, characterized in that, The baffle plate divides the storage box (435) into an air duct chamber (4351) and a storage chamber (4352); a quick-release box is slidably connected to the storage chamber (4352), which is used to hold feed; a limiter (4353) is also provided on the storage box (435), which is used to limit the displacement of the quick-release box.

8. A cattle shed feed overturning and cleaning robot according to claim 6, characterized in that, The ports at both ends of the S-shaped pipe (434), the connection port between the storage box (435) and the S-shaped pipe (434), the connection port between the storage box (435) and the fan (437), and the ventilation holes on the baffle plate (436) are all the same size.

9. A cattle shed feed overturning and cleaning robot according to claim 5, characterized in that, The cleaning assembly (42) includes a fourth drive motor (421) and a brush (422); the fourth drive motor (421) is disposed inside the housing (41), and the output shaft of the fourth drive motor (421) passes through the bottom of the housing (41); the brush (422) is connected to the output end of the fourth drive motor (421).

10. A cattle shed feed overturning and cleaning robot according to any one of claims 1-9, characterized in that, The lifting assembly (3) includes a lifting motor (31), a fixed plate (32), a sliding block (33), a lead screw (34), and a slider (35); the sliding block (33) is vertically mounted on the moving platform (2); there are two fixed plates (32) and they are mounted at both ends of the sliding block (33); the lifting motor (31) is connected to the fixed plate (32) and the output end of the lifting motor (31) passes through the fixed plate (32); one end of the lead screw (34) is rotatably connected to the fixed plate (32) and the other end is fixedly connected to the output end of the lifting motor (31); the slider (35) is slidably connected to the sliding block (33) and threadedly engaged with the lead screw (34); the overturning assembly (1) is connected to the slider (35).

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