Lettuce leaf removing and harvesting integrated vehicle capable of achieving bin self-unloading

By designing a lettuce leaf-removing and harvesting integrated vehicle, the problem of cumbersome manual harvesting of lettuce is solved, efficient and automated harvesting, transportation and storage of lettuce is achieved, and labor demand and time costs are reduced.

CN223286232UActive Publication Date: 2025-09-02SHANDONG UNIV OF SCI & TECH +1
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Patent Information

Application Number
CN202421890905.6
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-08-06
Publication Date
2025-09-02
Estimated Expiration
2034-08-06

AI Technical Summary

Technical Problem

The artificial harvesting process in lettuce cultivation is complicated and labor demand is large, which leads to high costs and low efficiency, and is difficult to meet the rapid supply demand for large-scale planting.

Method used

A lettuce leaf removal and harvesting integrated vehicle that can realize the self-dumping bin is designed, including lettuce leaf removal, cutting, transportation and storage mechanism, and uses motor drive and gear chain transmission to achieve automated operations, including impeller removal, cutting blade, track transportation and electric air pump discharge bin.

Benefits of technology

It improves the efficiency and quality of lettuce harvesting, reduces labor costs, enhances the flexibility and stability of the equipment, and achieves highly automated operations.

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Abstract

The utility model discloses a lettuce leaf-removing and harvesting integrated vehicle capable of realizing self-unloading, which comprises a lettuce leaf-removing mechanism, a lettuce cutting mechanism, a lettuce transporting mechanism and a lettuce storing mechanism, the lettuce leaf-removing mechanism is formed by connecting two rows of drum-type leaf-removing wheels; the leaf removing wheel is driven by a leaf removing motor driving device to run and is driven to run through meshing transmission of a driving gear, a driven gear and a chain, a cutting blade is installed at the bottom of a cutting transmission shaft of the lettuce cutting mechanism, a crawler wheel of the lettuce conveying mechanism is installed on a conveying transmission shaft, the crawler wheel is covered with a crawler belt, and the crawler belt is connected with the lettuce conveying mechanism. A collecting bin of the lettuce storage mechanism is installed on a movable support, and the inclination angle of the movable support is changed by driving a piston through an air pump. The lettuce harvesting machine is reasonable in design and ingenious in conception, adopts the integrated design of cutting, leaf removal, transportation and storage, shortens the time consumption of conventional lettuce harvesting, reduces the labor intensity, and is high in practicability.
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Description

Technical Field

[0001] The utility model relates to the technical field of agricultural tools, in particular to a lettuce leaf removing and harvesting integrated vehicle capable of realizing a self-unloading bin. Background Art

[0002] my country has a vast area of ​​lettuce cultivation, but manual harvesting often comes with drawbacks such as cumbersome processes, incomplete leaf removal, and a large labor force. This increases labor costs and complicates manual management. Especially for large-scale farmland, this can be inadequate to meet the rapid demand for agricultural output, extending the harvest cycle and hindering the timely supply of agricultural products. Manual harvesting is susceptible to human factors, such as varying skill levels and inconsistent harvesting standards. This can lead to uneven harvesting and inconsistent quality. Utility Model Content

[0003] The technical task of the utility model is to provide a lettuce leaf removing and harvesting integrated vehicle with a self-unloading bin in response to the above-mentioned deficiencies in the existing technology.

[0004] The technical solution adopted by the utility model to solve the technical problem is: a lettuce leaf removing and harvesting integrated vehicle capable of realizing a self-unloading bin, comprising a frame, six traveling wheels symmetrically mounted on the bottom end of the frame, a lettuce leaf removing mechanism fixedly mounted on the front end of the frame, a lettuce cutting mechanism fixedly mounted on the front end cross beam of the frame, a lettuce transport mechanism fixedly mounted on the middle end of the frame, and a lettuce storage mechanism fixedly mounted on the rear end of the frame, the lettuce leaf removing mechanism comprising a baffle, four sets of impellers, a leaf removing transmission shaft and a leaf removing motor drive device, the lettuce cutting mechanism comprising a stand, a cutting transmission shaft, a cutting motor drive device and a cutting blade, the lettuce transport mechanism comprising a crawler track, crawler wheels, a silicone top baffle, a side baffle, a transport transmission shaft, a support frame and a transport motor drive device, the lettuce storage mechanism comprising a collecting bin, a movable bracket, an electric air pump and a piston, and the motor drive device comprising a driving gear, a driven gear and a servo motor;

[0005] Preferably, the impeller is fixedly mounted on the impeller drive shaft by a snap fastener, the impeller drive shaft is mounted on the shaft bracket at the front end of the frame, the servo motor is fixedly mounted on the front end crossbeam next to the shaft bracket, a driven gear is fixedly mounted on the end of the impeller drive shaft, a driving gear is fixedly mounted on the end of the servo motor, and the driving gear and the driven gear are engaged and driven by a chain;

[0006] Preferably, the cutting blade is fixedly mounted on the bottom end of the cutting transmission shaft, the cutting transmission shaft is mounted on a stand above the vehicle frame, the driven gear is fixedly mounted on the upper end of the cutting transmission shaft, the servo motor is fixedly mounted above the stand, the driving gear is fixedly mounted on the output end of the servo motor, and the driving gear is engaged through a gear chain to transmit motion to the bottom cutting blade;

[0007] Preferably, the crawler is fixedly installed with anti-skid baffles at equal intervals, the support frame is fixedly installed at the bottom of the frame, the transport transmission shaft is installed on the front and rear sides of the support frame, the track wheels are fixedly installed on the transport transmission shaft, the crawler is installed in the middle of the support frame and covers the track wheels, the side baffles are fixedly installed at both ends of the support frame, the silicone top baffle is fixedly installed at the top position of the crawler, and the driven gear is fixedly installed on the transport transmission shaft near the outer edge of the frame;

[0008] Preferably, the movable bracket is fixedly mounted on the chassis at the rear side of the frame, the collecting bin is fixedly mounted above the movable bracket, the piston head is fixedly connected to the collecting bin, the pin seat end of the piston is fixedly mounted on the frame, the inflation port of the piston is connected to the electric air pump through a hose, the electric air pump is fixedly mounted on the side of the frame, the electric air pump inflates and deflates the piston inflation port through the hose, the height change of the piston drives the angle change of the movable bracket and the collecting bin to realize automatic unloading.

[0009] The beneficial effects of the utility model are as follows: the product is reasonably designed and easy to use, and can efficiently and integratedly complete the tasks of leaf removal, harvesting, collection, and transportation of lettuce, thereby improving harvesting efficiency and quality, reducing labor costs and time costs, enhancing its flexibility, adaptability, stability, and reliability, and achieving a high degree of automation during the operation process. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 This is one of the three-dimensional diagrams of the present utility model;

[0011] Figure 2 This is the second stereogram of the present utility model;

[0012] Figure 3 This is the third stereogram of the present utility model;

[0013] Figure 4 This is the fourth stereogram of the present utility model;

[0014] 1-lettuce leaf removal mechanism, 11-leaf removal mechanism motor drive device, 111-driven gear, 112-leaf removal mechanism servo motor, 113-driving gear, 114-chain, 12-impeller, 13-baffle, 2-lettuce cutting mechanism, 21-stand, 22-cutting mechanism drive shaft, 23-cutting mechanism motor drive device, 24-cutting blade, 3-lettuce transport mechanism, 31-transport mechanism drive shaft, 32-transport mechanism motor drive device, 33-crawler, 34-silica gel top baffle, 35-track wheel, 36-side baffle, 37-support frame, 4-lettuce storage mechanism, 41-collecting bin, 42-piston, 43-movable bracket, 5-travel wheel, 6-frame. DETAILED DESCRIPTION

[0015] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0016] See also Figure 1-4 A lettuce leaf removing and harvesting vehicle capable of realizing a self-unloading bin comprises a frame 6, six symmetrical traveling wheels 5 are fixedly mounted on the bottom end of the frame 6, a lettuce leaf removing mechanism 1 is fixedly mounted on the front end of the frame 6, a lettuce cutting mechanism 2 is fixedly mounted on the front crossbeam of the frame 6, a lettuce transport mechanism 3 is fixedly mounted on the middle end of the frame 6, a lettuce storage mechanism 4 is fixedly mounted on the rear end of the frame 6, the lettuce leaf removing mechanism 1 comprises a baffle 13, four sets of impellers 12 and four sets of motor drive devices 11, the lettuce The lettuce cutting mechanism 2 includes a stand 21, a cutting transmission shaft 22, a cutting motor drive device 23, and a cutting blade 24. The lettuce transport mechanism 3 includes a crawler 33, crawler wheels 35, a silicone top baffle 34, side baffles 36, a transport transmission shaft 31, a support frame 37, and a transport motor drive device 32. The lettuce storage mechanism 4 includes a collection bin 41, a movable bracket 43, an electric air pump 44, and a piston 42. The motor drive device 11 includes a driving gear 113, a driven gear 111, and a servo motor 112.

[0017] The impeller 12 is fixedly mounted on the impeller drive shaft by a buckle, and the impeller drive shaft is mounted on the shaft bracket at the front end of the frame 6. The servo motor 112 is fixedly mounted on the front end crossbeam next to the shaft bracket. A driven gear 111 is fixedly mounted on the end of the impeller drive shaft, and a driving gear 113 is fixedly mounted on the end of the servo motor 112. The driving gear 113 and the driven gear 111 are engaged and driven by a chain 114.

[0018] The cutting blade 24 is fixedly mounted on the bottom end of the cutting transmission shaft 22, and the cutting transmission shaft 22 is mounted on the stand 21 above the frame. The driven gear is fixedly mounted on the upper end of the cutting transmission shaft 22, and the servo motor is fixedly mounted above the stand. The driving gear is fixedly mounted on the output end of the servo motor. The driving gear is engaged through a gear chain to transmit motion to the bottom cutting blade 24.

[0019] The crawler 33 is fixedly installed with anti-skid baffles at equal intervals, the support frame 37 is fixedly installed at the bottom of the frame 6, the transport transmission shaft 31 is installed on the front and rear sides of the support frame 37, the track wheels 35 are fixedly installed on the transport transmission shaft 31, the crawler 33 is installed in the middle of the support frame 37, covering the track wheels 35, the side baffles 36 are fixedly installed at both ends of the support frame 37, the silicone top baffle 34 is fixedly installed at the top position of the crawler 33, the driven gear is fixedly installed on the side of the transport transmission shaft close to the outer edge of the frame, the servo motor is fixedly installed on the side of the frame 6, and the driving gear is fixedly installed on the output end of the servo motor, and the driving gear transmits motion to the crawler 33 through gear chain engagement;

[0020] The movable bracket 43 is fixedly mounted on the chassis on the rear side of the frame 6, the collecting bin 41 is fixedly mounted above the movable bracket 43, the head of the piston 42 is fixedly connected to the collecting bin 41, the pin seat end of the piston 42 is fixedly mounted on the frame 6, the inflation port of the piston 42 is connected to the electric air pump through a hose, and the electric air pump is fixedly mounted on the side of the frame 6.

[0021] The working principle of the above embodiment is:

[0022] The servo motor driving the traveling wheel 5 is started. Under the meshing of the gear chain, the vehicle body moves forward. The baffle 13 of the lettuce removing mechanism 1 pulls the lettuce to be collected into the gap of the impeller 12. The servo motor 112 of the leaf removing mechanism is started. The driving gear 113 and the driven gear 111 are meshed through the chain 114, driving the impeller 12 to rotate at high speed, grinding off the lettuce leaves around the lettuce. Then the servo motor of the lettuce cutting mechanism is started. The cutting transmission shaft 22 transmits the motion to the cutting blade 24 at the bottom. The two adjacent cutting blades 24 rotate in opposite directions to cut the lettuce from the root, and the lettuce falls back into the lettuce transport mechanism. The crawler belt 33 of the conveying mechanism 3 starts the servo motor of the lettuce transport mechanism 3, and the motion is transmitted to the crawler wheel 35 through the transmission of the transport drive shaft 31. The crawler belt 33 starts to rotate axially around the crawler wheel 35. The anti-slip baffle on the crawler belt 33 transports the cut lettuces upward in sequence. Under the constraint of the silicone top baffle 34, the lettuces fall into the collecting bin 41 of the lettuce storage mechanism 4 in sequence. When a sufficient amount of lettuce is collected, the controller opens the pipe connecting the electric air pump and the piston 42, and the piston 42 is deflated. The collecting bin 41 also slowly droops at a certain angle as the piston is deflated, thereby realizing automatic unloading.

[0023] The present invention is not limited to the above-mentioned embodiments. On the basis of the technical solutions disclosed in the present invention, technicians in this field can make some substitutions and deformations of some technical features therein according to the disclosed technical content without creative labor, and these substitutions and deformations are all within the protection scope of the present invention.

Claims

1. A self-unloading lettuce leaf removal and harvesting vehicle, comprising a vehicle frame (6), characterized in that: The bottom end of the frame (6) is fixedly mounted with six symmetrical traveling wheels (5); the front end of the frame (6) is fixedly mounted with a lettuce leaf removing mechanism (1); the front end cross beam of the frame (6) is fixedly mounted with a lettuce cutting mechanism (2); the middle end of the frame (6) is fixedly mounted with a lettuce transport mechanism (3); the rear end of the frame (6) is fixedly mounted with a lettuce storage mechanism (4); the lettuce leaf removing mechanism (1) comprises a baffle (13), a leaf removing transmission shaft (14), four sets of leaf removing wheels (12) and four sets of leaf removing motor drive devices (11); the lettuce cutting mechanism (2) comprises a stand (21) , a cutting transmission shaft (22), a cutting motor drive device (23) and a cutting blade (24); the lettuce transport mechanism (3) includes a crawler (33), a crawler wheel (35), a silicone top baffle (34), a side baffle (36), a transport transmission shaft (31), a support frame (37) and a transport motor drive device (32); the lettuce storage mechanism (4) includes a collecting bin (41), a movable bracket (43), an electric air pump (44) and a piston (42); the leaf removal motor drive device (11) includes a driving gear (113), a driven gear (111) and a servo motor (112).

2. The lettuce leaf removal and harvesting vehicle capable of realizing a self-unloading bin according to claim 1, characterized in that: The impeller (12) is fixedly mounted on a shaft by a buckle, the impeller transmission shaft (14) is mounted on a shaft bracket at the front end of a vehicle frame (6), the servo motor (112) is fixedly mounted on a front crossbeam next to the shaft bracket, a driven gear (111) is fixedly mounted on the end of the impeller transmission shaft (14), a driving gear (113) is fixedly mounted on the end of the servo motor (112), and the driving gear (113) and the driven gear (111) are meshed and driven by a chain (114).

3. The self-unloading lettuce harvesting and leaf removal vehicle according to claim 1, characterized in that: The cutting blade (24) is fixedly mounted on the bottom end of a cutting transmission shaft (22), and the cutting transmission shaft (22) is mounted on a stand (21) above the vehicle frame. A gear is fixedly mounted on the upper end of the cutting transmission shaft (22), and the cutting blade (24) transmits motion through the meshing of a gear chain.

4. The self-unloading lettuce harvesting and leaf removal vehicle according to claim 1, characterized in that: The crawler (33) is fixedly installed with anti-skid baffles at equal intervals, the support frame (37) is fixedly installed at the bottom of the frame (6), the transport transmission shaft (31) is installed at the front and rear sides of the support frame (37), the track wheel (35) is fixedly installed on the transport transmission shaft (31), the crawler (33) is installed in the middle of the support frame (37) and covers the track wheel (35), the side baffles (36) are fixedly installed at both ends of the support frame (37), the silicone top baffle (34) is fixedly installed at the top position of the crawler (33), and the crawler (33) transmits motion through the meshing of the gear chain.

5. The self-unloading lettuce harvesting and leaf removal vehicle according to claim 1 is characterized in that: The movable bracket (43) is fixedly mounted on the chassis at the rear side of the vehicle frame (6); the collecting bin (41) is fixedly mounted above the movable bracket (43); the head of the piston (42) is fixedly connected to the collecting bin (41); the pin seat end of the piston (42) is fixedly mounted on the vehicle frame (6); the piston (42) drives the collecting bin (41) to change its angle through suction and exhaust by a motor air pump, thereby realizing a self-unloading operation.