Asparagus lettuce harvester
By designing a large-capacity collection box and an automated unloading system, the problems of insufficient collection box capacity and inconvenient unloading in lettuce harvesters have been solved, thereby improving lettuce harvesting efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- WUCHANG SHOUYI UNIV
- Filing Date
- 2025-04-22
- Publication Date
- 2026-05-05
AI Technical Summary
Existing lettuce harvesters have small collection box capacity and inconvenient unloading, resulting in low harvesting efficiency.
The design incorporates a large-capacity collection box, combined with a spring support and a vibration motor drive, and is equipped with a 180° tilting unloading gate to achieve automated unloading.
It increased the collection capacity and unloading efficiency of the lettuce harvester, reduced labor intensity, and improved operational efficiency.
Smart Images

Figure CN224192513U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of agricultural equipment technology, specifically a lettuce harvester. Background Technology
[0002] The prime harvest period for lettuce is 15 days, and harvesting must be done quickly and efficiently to seize the season; old lettuce left in the field always faces stagnation and unsaleability. Existing lettuce harvesting machines on the market offer integrated operations, improving efficiency and reducing costs compared to traditional manual harvesting. However, existing lettuce harvesters still have some shortcomings and require further optimization and improvement.
[0003] Existing collection boxes are generally designed to be small in size and shallow in depth, and can only collect a small amount at a time. This results in frequent machine stops to unload the lettuce from the collection box during a single operation. The insufficient capacity increases the number of round trips for transportation, and the existing collection boxes are inconvenient to unload, requiring manual handling, which is time-consuming and labor-intensive, and reduces harvesting efficiency. Utility Model Content
[0004] The purpose of this utility model is to provide a lettuce harvester that solves the problems of low collection capacity and inconvenient unloading in the existing lettuce harvester.
[0005] To achieve the above objectives, this utility model provides the following technical solution: a lettuce harvester, comprising a vehicle body, a harvesting mechanism at the front end of the vehicle body, a feeding conveying mechanism connected to the output end of the harvesting mechanism at the middle of the vehicle body, and a collection box at the output end of the feeding conveying mechanism at the rear end of the vehicle body. The collection box is mounted on the frame of the vehicle body via a spring bracket. The frame is provided with a movable groove for the collection box to vibrate. The upper half of the collection box is located above the movable groove, and the lower half of the collection box passes through the movable groove. The lower half of the collection box is a hopper structure, and a vibration motor is installed on the side of the hopper structure of the lower half of the collection box. The collection box is elastically supported on the frame via a spring bracket and driven to vibrate by the vibration motor. The top of the collection box is provided with a feed inlet, the bottom of the collection box is provided with a discharge outlet, and the bottom of the collection box is provided with a discharge gate at the discharge outlet.
[0006] Preferably, the unloading gate includes an L-shaped flap gate, a door hinge, and a tension spring mechanism. The door hinge is fixed to the side of the collection box via a bearing seat. The L-shaped flap gate is hinged to the collection box via the door hinge. The two ends of the tension spring mechanism are respectively fixed to the L-shaped flap gate and the collection box.
[0007] Preferably, the unloading gate flips open at a tilt angle of 180°.
[0008] Preferably, the feeding and conveying mechanism is arranged obliquely upward along the direction from the harvesting mechanism to the collection box.
[0009] Preferably, the drive shaft at the lower end of the feeding conveyor is driven to rotate by a drive motor through a synchronous belt mechanism, and the driven shaft at the upper end of the feeding conveyor is fixed on a bearing adjustment seat. The bearing adjustment seat is fixed on the frame of the feeding conveyor along the conveying direction of the feeding conveyor.
[0010] This utility model has the following beneficial effects:
[0011] This utility model improves the lettuce harvester by setting up a collection box, spring support, vibration motor, and unloading gate. The improved lettuce harvester has a large-capacity collection box with a deep depth, allowing for top feeding and bottom discharge. After the unloading gate is opened, the unloading is automated through gravity and the operation of the vibration motor, which improves work efficiency, reduces labor intensity, and solves the problems of small collection capacity and inconvenient unloading in the existing lettuce harvester. Attached Figure Description
[0012] Figure 1 This is a front view of the present utility model;
[0013] Figure 2 This is a schematic diagram of the collection box installation structure on the vehicle frame of this utility model;
[0014] Figure 3 This is a diagram showing the unloading gate of the collection box of this utility model in the open state.
[0015] In the diagram: 1. Vehicle body; 11. Frame; 111. Movable trough; 2. Harvesting mechanism; 3. Feeding and conveying mechanism; 31. Drive shaft; 32. Drive motor; 33. Synchronous belt mechanism; 34. Driven shaft; 35. Bearing adjusting seat; 4. Collection box; 5. Spring bracket; 6. Vibration motor; 7. Unloading gate; 71. L-shaped flap gate; 72. Gate hinge; 73. Tension spring mechanism. Detailed Implementation
[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0017] like Figure 1-3As shown, this utility model provides a technical solution: a lettuce harvester, including a vehicle body 1, a harvesting mechanism 2 at the front end of the vehicle body 1, a feeding conveying mechanism 3 connected to the output end of the harvesting mechanism 2 at the middle of the vehicle body 1, and a collection box 4 at the output end of the feeding conveying mechanism 3 at the rear end of the vehicle body 1. The collection box 4 is mounted on the frame 11 of the vehicle body 1 via a spring bracket 5. The length of the frame 11 is extended to provide installation space for the large-capacity collection box 4. The depth and the dimension along the length of the frame 11 are both increased. The frame 11 is provided with a movable groove 111 for the collection box 4 to vibrate. The upper half of the collection box 4 is located above the movable groove 111, and the lower half of the collection box 4 passes through the movable groove 111. The lower half of the collection box 4 is a hopper structure, and a vibration motor 6 is installed on the side of the hopper structure of the lower half of the collection box 4. The collection box 4 is elastically supported on the frame 11 by a spring bracket 5 and is driven to vibrate by the vibration motor 6. When the unloading gate 7 is open, the lettuce collected in the collection box 4 is automatically unloaded downwards under the action of gravity and the vibration driven by the vibration motor 6.
[0018] The top of the collection box 4 is equipped with a large-diameter inlet, and a baffle is provided at the inlet to prevent the lettuce from falling out of the collection box 4. The bottom of the collection box 4 is equipped with a large-diameter outlet, and a discharge gate 7 is provided at the outlet at the bottom of the collection box 4.
[0019] The unloading gate 7 includes an L-shaped flap gate 71, a door hinge 72, and a tension spring mechanism 73. The door hinge 72 is fixed to the side of the collection box 4 through a bearing seat. The L-shaped flap gate 71 is hinged to the collection box 4 through the door hinge 72. The two ends of the tension spring mechanism 73 are fixed to the L-shaped flap gate 71 and the collection box 4 respectively. The opening and closing of the L-shaped flap gate 71 is locked by the tension spring mechanism 73 to ensure that the L-shaped flap gate 71 is stable and does not move after opening and closing. The unloading gate 7 can be flipped open at a 180° angle. The large opening and closing angle does not affect the unloading of lettuce.
[0020] The feeding conveyor 3 is obliquely upward along the direction from the harvesting mechanism 2 to the collection box 4. The drive shaft 31 at the lower end of the feeding conveyor 3 is driven to rotate by the drive motor 32 through the synchronous belt mechanism 33. The driven shaft 34 at the upper end of the feeding conveyor 3 is fixed on the bearing adjustment seat 35. The bearing adjustment seat 35 is fixed on the frame of the feeding conveyor 3 along the conveying direction of the feeding conveyor 3. The tension of the conveyor belt of the feeding conveyor 3 can be adjusted through the bearing adjustment seat 35.
[0021] It should be noted that, in this document, terms such as “comprising,” “including,” or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.
[0022] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A lettuce harvester, comprising a vehicle body (1), wherein a harvesting mechanism (2) is provided at the front end of the vehicle body (1), a feeding conveying mechanism (3) connected to the output end of the harvesting mechanism (2) is provided in the middle of the vehicle body (1), and a collection box (4) is provided at the output end of the feeding conveying mechanism (3) at the rear end of the vehicle body (1), characterized in that: The collection box (4) is mounted on the frame (11) of the vehicle body (1) by a spring bracket (5). The frame (11) is provided with a movable groove (111) for the collection box (4) to vibrate. The upper half of the collection box (4) is located above the movable groove (111). The lower half of the collection box (4) passes through the movable groove (111). The lower half of the collection box (4) is a hopper structure. A vibration motor (6) is installed on the side of the hopper structure of the lower half of the collection box (4). The collection box (4) is elastically supported on the frame (11) by the spring bracket (5) and driven to vibrate by the vibration motor (6). The top of the collection box (4) is provided with a feed inlet. The bottom of the collection box (4) is provided with a discharge outlet. The bottom of the collection box (4) is provided with a discharge gate (7) at the discharge outlet position.
2. The lettuce harvester according to claim 1, characterized in that: The unloading gate (7) includes an L-shaped flap gate (71), a door hinge (72), and a tension spring mechanism (73). The door hinge (72) is fixed to the side of the collection box (4) by a bearing seat. The L-shaped flap gate (71) is hinged to the collection box (4) by the door hinge (72). The two ends of the tension spring mechanism (73) are fixed to the L-shaped flap gate (71) and the collection box (4) respectively.
3. A lettuce harvester according to claim 2, characterized in that: The unloading gate (7) is opened by a flip angle of 180°.
4. A lettuce harvester according to claim 1, characterized in that: The feeding and conveying mechanism (3) is set obliquely upward along the direction from the harvesting mechanism (2) to the collection box (4).
5. A lettuce harvester according to claim 4, characterized in that: The drive shaft (31) at the lower end of the feeding conveyor (3) is driven to rotate by the drive motor (32) through the synchronous belt mechanism (33). The driven shaft (34) at the upper end of the feeding conveyor (3) is fixed on the bearing adjustment seat (35). The bearing adjustment seat (35) is fixed on the frame of the feeding conveyor (3) along the conveying direction of the feeding conveyor (3).