Seedling transplanter

Abstract

The utility model discloses a seedling transplanter which comprises a frame, and the frame is connected with wheels, a supporting assembly, a seedling transplanting mechanism, a conveying mechanism, a grabbing mechanism, a limiting cylinder, a sinking mechanism and a seedling planting mechanism. The supporting assembly is connected to the frame and used for supporting the culture trays; the seedling transplanting mechanism comprises a seedling transplanting frame, and the seedling transplanting frame is used for taking culture trays; the conveying mechanism comprises a conveying gear, and the conveying gear is used for conveying culture trays; the grabbing mechanism comprises a grabbing hand, and the grabbing hand is used for grabbing seedlings; the sinking mechanism comprises a mounting frame, and the mounting frame is connected with a seedling planting mechanism. Through mutual cooperation of a plurality of mechanisms, automatic planting of seedlings can be realized, and the planting efficiency and the planting quality are improved.

Description

Technical Field

[0001] The utility model belongs to the field of planting, and in particular relates to a seedling transplanter. Background Art

[0002] With the advancement of agricultural modernization, the requirements for efficiency and quality in agricultural production continue to rise. Traditional manual transplanting of rice seedlings presents challenges such as high labor intensity, low efficiency, and high costs. Furthermore, the declining rural labor force necessitates mechanized alternatives to manual labor. Against this backdrop, fully automatic rice seedling transplanters have emerged.

[0003] At present, the research on seedling transplanters in my country is still in its infancy, and there are mainly the following problems:

[0004] 1. my country's fully automatic seedling transplanters are mainly used in large farms and vegetable planting bases, but there are no planting machines suitable for small and medium-sized farmers.

[0005] 2. The existing planting machines are not consistent enough, resulting in the inability to improve planting efficiency. Utility Model Content

[0006] In order to solve the above problems existing in the prior art, the technical solution adopted by the present invention is:

[0007] A seedling transplanter comprises a frame connected to wheels, a support assembly, a seedling transplanting mechanism, a conveying mechanism, a gripping mechanism, a limiting cylinder, a sinking mechanism and a seedling planting mechanism;

[0008] The support assembly is connected to the vehicle frame, and the support assembly is used to support the culture tray;

[0009] The seedling transplanting mechanism includes a seedling transplanting rack, and the seedling transplanting rack is used to take the culture tray;

[0010] The conveying mechanism includes a conveying gear, and the conveying gear is used to convey the culture plate;

[0011] The grabbing mechanism includes a grabbing handle, and the grabbing handle is used to grab the seedlings;

[0012] The sinking mechanism includes a mounting frame, and the mounting frame is connected to a seedling planting mechanism.

[0013] The support assembly can be an integral structure with the vehicle frame, or a separate structure, as long as it can accommodate the culture tray.

[0014] The support components can be arranged in multiple layers vertically to hold multiple culture trays at a time.

[0015] Through the mutual cooperation of multiple mechanisms, automatic planting of seedlings can be achieved, improving planting efficiency and quality.

[0016] Furthermore, the transplanting mechanism also includes a lifting unit, a horizontal moving unit and a rotary motor; the horizontal moving unit is connected to the vehicle frame, the lifting unit is connected to the horizontal moving unit, the rotary motor is connected to the lifting unit, and the rotary motor is connected to the transplanting rack. The horizontal moving unit includes a guide rail and a mobile motor, the guide rail and the housing of the mobile motor are connected to the vehicle frame, the shaft end of the mobile motor is connected to a horizontal screw rod, and the horizontal screw rod is threadedly connected to the lifting unit; the lifting unit includes a lifting motor, the housing of the lifting motor is connected to the horizontal moving unit, the shaft end of the lifting motor is connected to a lifting screw rod, the lifting screw rod is threadedly connected to the mounting plate, and the mounting plate is connected to the rotary motor. The horizontal moving unit and the lifting unit can ensure that the transplanting rack can move in four directions: front, back, up and down, and can ensure that the transplanting rack can smoothly take out the culture tray.

[0017] Furthermore, the conveying mechanism also includes a conveying motor, two conveying shafts and multiple conveying gears. Both conveying shafts are connected to the vehicle frame, and each conveying shaft is connected to multiple conveying gears. The multiple conveying gears correspond to each other, and a conveying chain is connected between the two corresponding conveying gears. One of the conveying shafts is connected to the conveying motor. The conveying mechanism is located between the seedling transplanting mechanism and the grasping mechanism. It is used to send the culture tray removed by the seedling transplanting mechanism to the rear side of the planter to facilitate the grasping mechanism to grasp the seedlings. The seedling transplanting mechanism places the culture tray on the conveying mechanism, and the conveying mechanism transports the culture tray to the rear side of the vehicle body to facilitate the grasping mechanism to grasp it. Since both the seedling transplanting mechanism and the grasping mechanism can adjust their positions, the conveying mechanism is only responsible for transmission and does not need to adjust its position. Therefore, it can be achieved through a simple chain drive.

[0018] Furthermore, the grabbing mechanism also includes a connecting frame, an adjustment motor, an adjusting frame, a grabbing motor and a synchronous belt. The synchronous belt is arranged horizontally, the connecting frame is connected to the synchronous belt, the connecting frame is connected to a plurality of grabbers, and the plurality of grabbers are connected through an adjusting frame, the adjusting frame is connected to an adjustment motor, and the grabber is connected to a grabbing motor. The adjusting motor is connected to an adjustment screw, and the adjustment screw is connected to one of the grabbers, and the adjustment motor can drive the grabber to move horizontally along the connecting frame. There are three grabbers, and the three grabbers are connected through an adjusting frame. The adjusting frame is a diamond-shaped telescopic structure, and the adjusting frame is connected to the grabbers at the end. The adjusting frame is connected to the grabber at one end, driving the grabber to move, and the grabber then drives the other two grabbers to move through the diamond-shaped telescopic structure. Since the seedlings in the culture tray and the limiting cylinder are not one-to-one corresponding, the grabber needs to grab the seedlings in the culture tray, and then adjust the position to align with the limiting cylinder for feeding, so the adjusting frame is required to adjust the position of the grabber.

[0019] Furthermore, the limiting cylinders are provided with three. Since there are three grippers, three limiting cylinders are also provided, so that after the grippers grab the seedlings, they can be smoothly dropped into the limiting cylinders. The upper part of the limiting cylinder is a structure with a larger upper part and a smaller lower part, which facilitates the seedlings to enter the limiting cylinders. The lower part is a cylinder with a uniform diameter, which is conducive to the seedlings sliding smoothly into the seedling planting mechanism.

[0020] Furthermore, the sinking mechanism includes a limiting hole and a crank slider assembly. One end of the crank slider assembly is connected to the sinking motor, and the other end of the crank slider assembly is located in the limiting hole. The crank slider assembly is connected to the mounting frame via a pressure rod. The sinking mechanism is mainly used to drive the planting mechanism to move up and down to complete the planting of seedlings. Therefore, the sinking mechanism is required to provide sufficient pressure to enable the planting mechanism to be inserted into the soil.

[0021] Furthermore, the seedling planting mechanism includes a connecting rod, an electric push rod and multiple duckbill groups. The duckbill group is arranged below the limiting cylinder, and the duckbill group is connected to the mounting frame through a duckbill frame. The duckbill group includes a fixed duckbill and an adjustable duckbill; the fixed duckbill is connected to the mounting frame, and the adjustable duckbill is rotatably connected to the duckbill frame. The top of the adjustable duckbill is connected to the connecting rod, and the connecting rod is connected to the electric push rod, and the electric push rod is connected to the vehicle frame.

[0022] The beneficial effects of the present invention are as follows: First, it can greatly improve the efficiency of transplanting seedlings, save labor costs and time costs, and is conducive to large-scale planting. Secondly, it can ensure the consistency and standardization of transplanting, improve the quality of transplanting seedlings, and thus improve the yield and quality. Furthermore, it promotes the mechanization and intelligentization of agricultural production, which is an important manifestation of the development of agricultural modernization. It can adapt to small and medium-sized plantations, help liberate labor, and allow farmers to devote more energy to other agricultural production links or other work. In addition, it is also of great significance in promoting the upgrading of the agricultural industry and ensuring the stability of vegetable supply. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a schematic diagram of the structure of the utility model Figure 1 .

[0024] Figure 2 This is a schematic diagram of the structure of the utility model Figure 2 .

[0025] Figure 3 This is a schematic diagram of the structure of the utility model Figure 3 .

[0026] Figure 4 This is a partial illustration of the utility model Figure 1 .

[0027] Figure 5 This is a partial illustration of the utility model Figure 2 .

[0028] Figure 6 This is a partial illustration of the utility model Figure 3 .

[0029] Figure 7 for Figure 6 Schematic diagram of part of the structure of the middle gripper.

[0030] Figure 8 This is a partial illustration of the utility model Figure 4 .

[0031] Figure 9 This is a partial illustration of the utility model Figure 5 .

[0032] In the figure: 1-frame; 2-wheel; 3-culture tray; 4-seedling transplanting mechanism; 41-rotating motor; 42-seedling transplanting rack; 43-lifting motor; 44-moving motor; 45-mounting plate; 5-conveyance mechanism; 51-conveyance motor; 52-conveyance gear; 53-conveyance shaft; 6-grabbing mechanism; 61-adjustment motor; 62-grab; 63-adjustment rack; 64-grabbing motor; 65-installation area; 66-connecting rack; 7-limiting cylinder; 8-sinking mechanism; 81-limiting hole; 82-crank slider group; 83-pressing rod; 84-sinking motor; 85-mounting rack; 9-seedling planting mechanism; 91-electric push rod; 92-connecting rod; 93-fixed duckbill; 94-adjustable duckbill; 95-duckbill rack. DETAILED DESCRIPTION

[0033] The present invention will be further described below with reference to the accompanying drawings and accompanying drawings.

[0034] In order to more clearly understand the above-mentioned objectives, features and advantages of the present invention, the present invention is described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that the embodiments of the present application and the features therein can be combined with each other without conflict.

[0035] The terms "first", "second", "third", etc. are only used for distinction and description and should not be understood as indicating or implying relative importance.

[0036] It should also be noted that, in the description of this utility model, unless otherwise expressly specified or limited, the terms "disposed," "installed," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; direct connections, indirect connections through an intermediate medium, and internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0037] The following is a detailed description of the specific embodiments of the present invention in conjunction with the accompanying drawings. It should be understood that the specific embodiments described herein are only used to illustrate and explain the present invention and are not intended to limit the present invention.

[0038] Example 1:

[0039] like Figure 1-6 As shown in FIG8 , a seedling transplanter includes a frame 1 , to which wheels 2 , a support assembly, a seedling transplanting mechanism 4 , a conveying mechanism 5 , a gripping mechanism 6 , a limiting cylinder 7 , a sinking mechanism 8 and a seedling planting mechanism 9 are connected;

[0040] The support assembly is connected to the vehicle frame 1 and is used to support the culture tray 3;

[0041] The seedling transplanting mechanism 4 includes a seedling transplanting rack 42, and the seedling transplanting rack 42 is used to take the culture tray 3;

[0042] The conveying mechanism 5 includes a conveying gear 52, and the conveying gear 52 is used to convey the culture plate 3;

[0043] The grabbing mechanism 6 includes a grabbing hand 62, and the grabbing hand 62 is used to grab the seedlings;

[0044] The sinking mechanism 8 includes a mounting frame 85 , and the mounting frame 85 is connected to a seedling planting mechanism 9 .

[0045] The support assembly (not shown in the figure) can be an integral structure with the vehicle frame 1 or a separate structure, as long as it can accommodate the culture tray 3 .

[0046] The support components can be arranged in multiple layers longitudinally to place multiple culture trays 3 at a time.

[0047] Through the mutual cooperation of multiple mechanisms, automatic planting of seedlings can be achieved, improving planting efficiency and quality.

[0048] Example 2:

[0049] On the basis of Example 1, the seedling transplanting mechanism 4 further includes a lifting unit, a horizontal moving unit and a rotating motor 41;

[0050] The horizontal moving unit is connected to the vehicle frame 1 , the lifting unit is connected to the horizontal moving unit, the rotary motor 41 is connected to the lifting unit, and the rotary motor 41 is connected to the seedling transplanting rack 42 .

[0051] The horizontal moving unit includes a guide rail and a moving motor 44, the housings of the guide rail and the moving motor 44 are connected to the vehicle frame 1, the shaft end of the moving motor 44 is connected to a horizontal screw rod, and the horizontal screw rod is threadedly connected to the lifting unit;

[0052] The lifting unit includes a lifting motor 43 , the housing of the lifting motor 43 is connected to the horizontal moving unit, the shaft end of the lifting motor 43 is connected to a lifting screw, the lifting screw is threadedly connected to the mounting plate 45 , and the mounting plate 45 is connected to the rotating motor 41 .

[0053] The horizontal moving unit and the lifting unit can ensure that the seedling transplanting rack 42 can move in four directions, front, back, up and down, and can ensure that the seedling transplanting rack 42 can smoothly take out the culture tray 3.

[0054] The rotating motor 41 is used to drive the seedling transplanting rack 42 to rotate. When the seedling transplanting rack 42 removes the culture tray 3, the culture tray 3 is in front of the seedling transplanting rack 42 (the front here refers to the moving direction of the planter). Only by rotating the culture tray 3 to the back of the seedling transplanting rack 42 can the subsequent process be facilitated. Therefore, the rotating motor 41 must be rotated 180° to rotate the culture tray 3 to the back of the seedling transplanting rack 42.

[0055] Example 3:

[0056] Based on Example 2, the conveying mechanism 5 also includes a conveying motor 51, two conveying shafts 53 and multiple conveying gears 52. The two conveying shafts 53 are connected to the frame 1. Each conveying shaft 53 is connected to multiple conveying gears 52. The multiple conveying gears 52 correspond to each other one by one. A conveying chain is connected between the corresponding two conveying gears 52, and one of the conveying shafts 53 is connected to the conveying motor 51.

[0057] The conveying mechanism 5 is located between the seedling transplanting mechanism 4 and the grasping mechanism 6. It is used to send the culture tray 3 removed by the seedling transplanting mechanism 4 to the rear side of the planter to facilitate the grasping mechanism 6 to grasp the seedlings. The seedling transplanting mechanism 4 places the culture tray 3 on the conveying mechanism 5, and the conveying mechanism 5 transports the culture tray 3 to the rear side of the vehicle body to facilitate the grasping mechanism 6 to grasp it. Since the seedling transplanting mechanism 4 and the grasping mechanism 6 can adjust their positions, the conveying mechanism 5 is only responsible for transmission and does not require position adjustment. Therefore, it can be achieved through a simple chain drive.

[0058] In this application, three conveyor chains are provided to reduce manufacturing and maintenance costs as much as possible while ensuring conveying stability. In the figure, only a pair of conveying gears 52 are shown, and no conveyor chains are shown.

[0059] Example 4:

[0060] On the basis of Example 3, Figure 7As shown, the grabbing mechanism 6 also includes a connecting frame 66, an adjustment motor 61, an adjusting frame 63, a grabbing motor 64 and a synchronous belt. The synchronous belt is horizontally arranged, and the connecting frame 66 is connected to the synchronous belt. The connecting frame 66 is connected to a plurality of grippers 62. The plurality of grippers 62 are connected to each other through an adjusting frame 63. The adjusting frame 63 is connected to the adjustment motor 61, and the grippers 62 are connected to the grabbing motor 64.

[0061] The synchronous belt is driven by a motor, and both ends of the synchronous belt are connected to the installation area 65 (the two places marked in the installation area 65 represent the two end points of the synchronous belt when it is installed). The synchronous belt is mainly used to drive the grabbing mechanism 6 to move forward and backward, so that the grabber 62 can grab the seedlings from the front and then move to the rear (above the limit cylinder 7). The synchronous belt can be replaced by a transmission mechanism such as a screw.

[0062] The adjustment motor 61 is connected to an adjustment screw rod, and the adjustment screw rod is connected to one of the grippers 62 . The adjustment motor 61 can drive the gripper 62 to move horizontally along the connecting frame 66 .

[0063] There are three grippers 62 , which are connected by an adjustment frame 63 . The adjustment frame 63 is a diamond-shaped telescopic structure, and the adjustment frame 63 is connected to the grippers 62 at the end.

[0064] The adjustment frame 63 is connected to the grip 62 at one end to drive the grip 62 to move, and the grip 62 then drives the other two grips 62 to move through the diamond-shaped telescopic structure.

[0065] Since the seedlings in the culture tray 3 do not correspond one to one with the limiting cylinder 7, the gripper 62 needs to grab the seedlings in the culture tray 3 (the number of seedlings in each row of the culture tray 3 must be a multiple of 3), and then adjust the position to align with the limiting cylinder 7 to feed the material. Therefore, the adjustment frame needs to adjust the position of the gripper 62.

[0066] Example 5:

[0067] On the basis of embodiment 4, three limiting cylinders 7 are provided.

[0068] Since there are three grippers 62, three limiting cylinders 7 are also provided, so that the grippers 62 can smoothly put the seedlings into the limiting cylinder 7 after grabbing them. The upper part of the limiting cylinder 7 is a structure with a larger upper part and a smaller lower part, which is convenient for the seedlings to enter the limiting cylinder 7, and the lower part is a cylinder of equal diameter, which is conducive to the seedlings sliding smoothly into the seedling planting mechanism 9.

[0069] Example 6:

[0070] Based on Example 5, the sinking mechanism 8 includes a limiting hole 81 and a crank slider group 82, one end of the crank slider group 82 is connected to the sinking motor 84, and the other end of the crank slider group 82 is located in the limiting hole 81, and the crank slider group 82 is connected to the mounting bracket 85 through the lower pressure rod 83.

[0071] The sinking mechanism 8 is mainly used to drive the seedling planting mechanism 9 to move up and down to complete the seedling planting. Therefore, the sinking mechanism 8 is required to provide sufficient pressure so that the seedling planting mechanism 9 can be inserted into the soil.

[0072] The use of the crank slider group 82 can provide sufficient power to ensure that the seedling planting mechanism 9 is smoothly pressed into the soil.

[0073] Example 7:

[0074] On the basis of Example 6, Figure 9 As shown, the seedling planting mechanism 9 includes a connecting rod 92, an electric push rod 91 and a plurality of duckbill groups. The duckbill group is arranged below the limiting cylinder 7. The duckbill group is connected to the mounting frame 85 through a duckbill frame 95. The duckbill group includes a fixed duckbill 93 and an adjustable duckbill 94.

[0075] The fixed duckbill 93 is connected to the mounting frame 85 , the adjustable duckbill 94 is rotatably connected to the duckbill frame 95 , the top of the adjustable duckbill 94 is connected to the connecting rod 92 , the connecting rod 92 is connected to the electric push rod 91 , and the electric push rod 91 is connected to the vehicle frame 1 .

[0076] The so-called duckbill group has a pointed end for digging holes and an open end for placing seedlings. The sinking mechanism 8 drives the duckbill group deep into the soil to dig holes, and then the electric push rod 91 drives the adjusting duckbill 94 to rotate (using the lever principle, the rotation center is the connection between the adjusting duckbill 94 and the duckbill frame 95), so that the bottom of the duckbill group opens, and the seedlings fall into the pit. Finally, the duckbill group can be lifted.

[0077] Specific working principle:

[0078] When in use, the planter moves forward and planting is carried out at the back. First, the culture tray 3 containing the seedlings is placed on the supporting assembly, and then the seedling transplanting mechanism 4 takes out the entire culture tray 3. After the seedling transplanting frame 42 rotates 180°, the culture tray 3 is placed on the conveying mechanism 5. The conveying mechanism 5 transports the entire culture tray 3 to the rear end of the planter. The gripper 62 grabs the seedlings and puts them into the limiting cylinder 7. The seedlings slide into the duckbill group, and the sinking mechanism 8 drives the duckbill group deep into the soil. The electric push rod 91 then controls and adjusts the duckbill 94 to open, and the seedlings fall into the dug pit (the pit here refers to the pit formed when the duckbill group goes deep into the soil). Finally, the seedling planting mechanism 9 is lifted.

[0079] The present invention is not limited to the above-mentioned optional implementation methods. Anyone can derive various other forms of products under the inspiration of the present invention. However, no matter what changes are made in the shape or structure, any technical solution that falls within the scope defined by the claims of the present invention shall fall within the scope of protection of the present invention.

Claims

1. A rice seedling transplanter, characterized by: The vehicle comprises a frame (1), wherein the frame (1) is connected to wheels (2), a support assembly, a seedling transplanting mechanism (4), a conveying mechanism (5), a grasping mechanism (6), a limiting cylinder (7), a sinking mechanism (8), and a seedling planting mechanism (9); The support assembly is connected to the vehicle frame (1), and is used to support the culture tray (3); The seedling transplanting mechanism (4) comprises a seedling transplanting rack (42), and the seedling transplanting rack (42) is used to take the culture tray (3); The conveying mechanism (5) comprises a conveying gear (52), and the conveying gear (52) is used to convey the culture plate (3); The grabbing mechanism (6) includes a grabbing hand (62), and the grabbing hand (62) is used to grab the seedlings; The sinking mechanism (8) comprises a mounting frame (85), and the mounting frame (85) is connected to a seedling planting mechanism (9).

2. The rice seedling transplanter according to claim 1, characterized in that: The seedling transplanting mechanism (4) further includes a lifting unit, a horizontal moving unit and a rotating motor (41); The horizontal moving unit is connected to the vehicle frame (1), the lifting unit is connected to the horizontal moving unit, the rotating motor (41) is connected to the lifting unit, and the rotating motor (41) is connected to the seedling transplanting rack (42).

3. The rice seedling transplanter according to claim 2, characterized in that: The horizontal moving unit comprises a guide rail and a moving motor (44), the housings of the guide rail and the moving motor (44) are connected to the vehicle frame (1), the shaft end of the moving motor (44) is connected to a horizontal screw rod, and the horizontal screw rod is threadedly connected to the lifting unit; The lifting unit includes a lifting motor (43), a housing of the lifting motor (43) is connected to the horizontal moving unit, a shaft end of the lifting motor (43) is connected to a lifting screw, the lifting screw is threadedly connected to a mounting plate (45), and the mounting plate (45) is connected to a rotating motor (41).

4. The rice seedling transplanter according to claim 1, characterized in that: The conveying mechanism (5) further comprises a conveying motor (51), two conveying shafts (53) and a plurality of conveying gears (52). The two conveying shafts (53) are both connected to the vehicle frame (1). Each conveying shaft (53) is connected to a plurality of conveying gears (52). The plurality of conveying gears (52) correspond to each other one by one. A conveying chain is connected between two corresponding conveying gears (52). One of the conveying shafts (53) is connected to the conveying motor (51).

5. The rice seedling transplanter according to claim 1, characterized in that: The grabbing mechanism (6) further comprises a connecting frame (66), an adjustment motor (61), an adjusting frame (63), a grabbing motor (64) and a synchronous belt, wherein the synchronous belt is arranged horizontally, the connecting frame (66) is connected to the synchronous belt, the connecting frame (66) is connected to a plurality of grabbers (62), the plurality of grabbers (62) are connected to each other via the adjusting frame (63), the adjusting frame (63) is connected to the adjustment motor (61), and the grabbers (62) are connected to the grabbing motor (64).

6. The rice seedling transplanter according to claim 5, characterized in that: The adjustment motor (61) is connected to an adjustment screw rod, and the adjustment screw rod is connected to one of the grippers (62). The adjustment motor (61) drives the gripper (62) to move horizontally along the connecting frame (66).

7. The rice seedling transplanter according to claim 6, characterized in that: There are three grippers (62), and the three grippers (62) are connected by an adjustment frame (63). The adjustment frame (63) is a diamond-shaped telescopic structure, and the adjustment frame (63) is connected to the grippers (62) at the end.

8. The rice seedling transplanter according to claim 1, characterized in that: The sinking mechanism (8) comprises a limiting hole (81) and a crank slider group (82), one end of the crank slider group (82) is connected to a sinking motor (84), the other end of the crank slider group (82) is located in the limiting hole (81), and the crank slider group (82) is connected to a mounting frame (85) via a lower pressure rod (83).

9. The rice seedling transplanter according to claim 8, characterized in that: The seedling planting mechanism (9) includes a connecting rod (92), an electric push rod (91) and a plurality of duckbill groups. The duckbill groups are arranged below the limiting cylinder (7). The duckbill groups are connected to the mounting frame (85) through a duckbill frame (95). The duckbill groups include a fixed duckbill (93) and an adjustable duckbill (94). The fixed duckbill (93) is connected to the mounting frame (85), the adjustable duckbill (94) is rotatably connected to the duckbill frame (95), the top of the adjustable duckbill (94) is connected to a connecting rod (92), the connecting rod (92) is connected to an electric push rod (91), and the electric push rod (91) is connected to the vehicle frame (1).

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