CN108848894B

CN108848894B - Lettuce harvesting device

Info

Publication number: CN108848894B
Application number: CN201810596625.7A
Authority: CN
Inventors: 熊光菊
Original assignee: Chongqing Yongwang Seed Co ltd
Current assignee: Chongqing Yongwang Seed Co ltd
Priority date: 2018-06-11
Filing date: 2018-06-11
Publication date: 2024-04-02
Anticipated expiration: 2038-06-11
Also published as: CN108848894A

Abstract

The patent discloses a lettuce harvesting device, which comprises a frame, travelling wheels, a cutting part, a conveying mechanism, a collecting box, a leaf peeling mechanism and a transmission mechanism, wherein the leaf peeling mechanism comprises a first rotating shaft, a workbench and a leaf peeling knife, the workbench is cylindrical and is fixed on the first rotating shaft, a plurality of leaf peeling holes penetrating the workbench are circumferentially arranged on the workbench, the leaf peeling knife is slidably connected to the side wall of the leaf peeling hole, and the collecting box is positioned under the leaf peeling mechanism; the conveying mechanism end is equipped with the standpipe, and drive mechanism includes to support briquetting, a plurality of ratchet, rotates and connects in the frame second pivot, fixes ratchet and bevel gear group in the second pivot, supports briquetting sliding connection in the frame and be located the conveyer belt below, and a plurality of ratchet vertical equidistance is fixed on supporting briquetting, ratchet and ratchet cooperation, and first pivot passes through bevel gear group transmission with the second pivot. The problem that needs the manual work to peel off the lettuce leaf has been solved to this scheme, realizes that the lettuce leaf peels off from the lettuce stem automatically.

Description

Lettuce harvesting device

Technical Field

The invention relates to the technical field of agricultural harvesters, in particular to a lettuce harvesting device.

Background

Lettuce is a common vegetable, is usually annual herb, is 25-100 cm high, has vertically straight root, upright stem, single growth, branches of upper conical inflorescence and white whole stem branch. The meat tender stem is eaten mainly, and can be eaten raw, cold or dressed, fried, dried or pickled. The lettuce is usually harvested manually, so that the labor intensity is high and the production efficiency is low.

The patent document with the Chinese publication number of CN105493747A discloses an electric leaf vegetable harvester which comprises a harvesting device, a conveying device, a vegetable collecting box, a power transmission device, a traveling device and a height adjusting device, wherein the harvesting device and the vegetable collecting box are respectively arranged at two ends of the conveying device; the power transmission device is connected with the walking device and the conveying device at the same time, and the height adjusting device supports the conveying device and moves up and down together with the harvesting device. The harvesting device can perform soil cutting operation and also can perform soil cutting operation. The scheme realizes the cutting and collecting of vegetables; the driving wheel distance does not exceed the whole cutting width so as to ensure that vegetables outside the cutting width are not damaged by pressure during harvesting.

The harvesting and collecting of the lettuce can be achieved through the scheme, but the main edible part of the lettuce is tender stem, so that leaves on the lettuce need to be removed after harvesting, and at present, the leaves are usually peeled off manually, so that time and labor are wasted.

Disclosure of Invention

The invention aims to provide a lettuce harvesting device, which solves the problem that lettuce leaves need to be peeled off manually and realizes that the lettuce leaves are peeled off from stem of the lettuce automatically.

In order to achieve the above object, the basic scheme of the present invention is as follows:

the lettuce harvesting device comprises a frame, travelling wheels, a cutting part, a conveying mechanism and a collecting box, wherein the travelling wheels, the cutting part, the conveying mechanism and the collecting box are all fixed on the frame, the conveying mechanism comprises a roller shaft, a conveying belt, a leaf peeling mechanism and a transmission mechanism, the leaf peeling mechanism comprises a first rotating shaft, a workbench and a leaf peeling knife, the first rotating shaft is rotationally connected to the frame, the workbench is cylindrical and fixed on the first rotating shaft, a plurality of leaf peeling holes penetrating the workbench are circumferentially formed in the workbench, the leaf peeling knife is slidably connected to the side wall of the leaf peeling holes, the leaf peeling knife is electrically connected with a miniature motor for driving the leaf peeling knife to move up and down, a switch for controlling the miniature motor is arranged on the frame, and the collecting box is located under the leaf peeling mechanism; the conveying mechanism end is equipped with the standpipe, the standpipe is located one of them leaf hole of peeling, the conveyer belt is the elastic webbing, drive mechanism includes to support briquetting, a plurality of ratchet, rotates and connects in the frame the second pivot, fixes ratchet and bevel gear group in the second pivot, support briquetting sliding connection in the frame and be located the conveyer belt below, it is connected with the pressure spring to support between briquetting lower extreme and the frame, a plurality of the vertical equidistance of ratchet is fixed on supporting the briquetting, ratchet and ratchet cooperation, first pivot passes through bevel gear group transmission with the second pivot.

Principle of basic scheme: in operation, the device is moved to the front of the lettuce, and then the device continues to move forward, and the stem of the lettuce is cut off by the cutting part. The cut lettuce falls onto the conveyor and then falls into the standpipe and is guided by the standpipe such that the lettuce falls into the peel She Kongna directly below the standpipe. At the moment, a switch is turned on, the miniature motor is controlled to drive the leaf stripping knife to move upwards, the leaf stripping knife moves upwards to cut off the leaf, and the stem of the lettuce falls into the collecting box from passing through the leaf stripping hole.

When another lettuce is harvested into the conveying mechanism, the conveyor belt is pressed down and against the pressing block below the conveyor belt due to the gravity of the lettuce. The pressing block moves downwards, the pressure spring is compressed at the moment, the ratchet on the pressing block moves downwards along with the pressing block, the ratchet rotates with the ratchet matched with the ratchet, the ratchet rotates to drive the first rotating shaft to rotate, the second rotating shaft synchronously rotates due to the transmission of the bevel gear group, the workbench on the second rotating shaft rotates, and the other leaf stripping hole rotates to the position right below the vertical pipe, and the hole which falls into the lettuce rotates to the position right below the vertical pipe. When the lettuce is continuously conveyed and is not pressed against the pressing block, the pressing block moves back to the upper position under the action of the elastic restoring force of the pressure spring, and the ratchet moves upwards along with the pressing block, so that the ratchet does not rotate due to opposite directions, and the workbench cannot rotate. The upper moving position of the pressing block is prepared for peeling She Kong under the vertical pipe when the next lettuce enters and the workbench rotates.

The steps are circularly carried out, and the harvesting, defoliation and collection of a large number of lettuces can be completed simultaneously.

The basic scheme has the advantages that: (1) This scheme is reaped, is removed the leaf and is collected work to the lettuce simultaneously, and the high mechanized operation of realization has saved the manpower and has improved work efficiency simultaneously.

(2) According to the scheme, in the process of removing the lettuce leaves, the rotation of the workbench in the leaf stripping mechanism is realized by utilizing the gravity change on the conveying belt, the occurrence of poor lettuce leaf stripping effect caused by unsynchronized conveying of the lettuce and rotation of the workbench is avoided, and the linkage and the synchronism are higher.

(3) In this scheme, the rotation of workstation does not need extra power supply, and its power comes from the gravity of lettuce, and energy utilization is high, and still can work under the limited circumstances of energy sources such as field, adaptability is strong.

Further, two symmetrical baffles are arranged at the front end of the cutting part, an opening is arranged between the two baffles, a movable plate is hinged to one baffle, and a coil spring is arranged between the movable plate and the baffle. Normally, the movable plate will block the opening, when there is the lettuce in the place ahead, the lettuce supports the movable plate to make the movable plate upset, the lettuce is close to the cutting part gradually, when the lettuce no longer supports the movable plate, the movable plate is returned under the elastic restoring force of wind spring and is plugged up the opening once more. When the cutting part moves forward to harvest the lettuce, the lettuce is possibly toppled forwards under the stress of the lettuce, and the movable plate and the baffle plate block the lettuce at the moment, so that the lettuce is prevented from toppling forwards and is inconvenient to collect.

Further, the collecting box upper portion is equipped with the elastic net, the aperture of elastic net is less than the diameter of lettuce stem, the collecting box lower part is equipped with the backup pad, placed the box with a net in the backup pad, be equipped with the chamber door that supplies to get the box with a net on the collecting box lateral wall, the outlet has been seted up to the collecting box bottom, the outlet is equipped with the control valve.

A large amount of water is put in the collecting box until the water surface is higher than the elastic net, the lettuce falls from the peeling She Kongzhong, the stem of the lettuce falls from the holes of the elastic net due to heavier weight, the stem of the lettuce falls from the holes, and the residual leaves and broken leaves falling from the peeling She Kongzhong at the same time cannot open the holes on the elastic net due to lighter weight and are blocked above the elastic net by the elastic net. The lettuce stems fall into the net cage, and sediment adhered to the lettuce stems sinks through the net cage and gathers at the bottom of the collecting box. After the net cage is filled with the lettuce stems, the drain holes are opened to drain the water in the collecting box, and then the box door is opened to take out the clean and defoliated lettuce stems.

Further, a push rod is connected to the net cage, one end of the push rod is hinged to the net cage, and the other end of the push rod is hinged to the eccentric position of the travelling wheel. When the travelling wheel rotates, the push rod is driven to move, so that one end, connected with the net cage, of the push rod moves up and down, the net cage is driven to vibrate up and down, the lettuce stems in the net cage are vibrated and cleaned, sediment in the lettuce stems is shaken off, and a better cleaning effect is achieved.

Further, a plurality of bulges are arranged on the conveyor belt to prevent lettuce from rolling off the conveyor.

Drawings

FIG. 1 is a schematic view of the overall structure of an embodiment of the lettuce harvesting apparatus of the present invention;

fig. 2 is a schematic structural view of a cutting part of an embodiment of the lettuce harvesting apparatus of the present invention;

fig. 3 is a schematic structural view of a leaf peeling mechanism in an embodiment of the lettuce harvesting apparatus of the present invention;

fig. 4 is a schematic structural view of a transmission mechanism in an embodiment of the lettuce harvesting apparatus in accordance with the present invention;

fig. 5 is an enlarged schematic view of a in fig. 1.

Detailed Description

The following is a further detailed description of the embodiments:

reference numerals in the drawings of the specification include: the device comprises a frame 1, travelling wheels 2, handles 3, a switch 4, a cutting part 5, a roll shaft 6, a conveyor belt 7, a baffle 8, a movable plate 9, a leaf peeling mechanism 10, a first rotating shaft 11, a workbench 12, a leaf peeling hole 13, a leaf peeling knife 14, a collecting box 15, an elastic net 16, a supporting plate 17, a net box 18, a push rod 19, a vertical pipe 20, a pressing block 21, a ratchet 22, a second rotating shaft 23, a ratchet 24, a first bevel gear 25, a second bevel gear 26 and a pressure spring 27.

Examples

Basically as shown in fig. 1 and 2: the utility model provides a lettuce harvesting apparatus, including frame 1, walking wheel 2, cutting portion 5, transport mechanism, collection box 15, leaf peeling mechanism 10 and drive mechanism, walking wheel 2, cutting portion 5, transport mechanism and collection box 15 are all fixed on frame 1, the welding has handle 3 on frame 1, transport mechanism includes roller 6 and conveyer belt 7, conveyer belt 7 is the elastic webbing, cutting portion 5 front end is fixed with two baffles 8 of symmetry, leave the opening between two baffles 8, hinge on one of them baffle 8 has fly leaf 9, be fixed with the wind spring between fly leaf 9 and the baffle 8.

Referring to fig. 3, the leaf peeling mechanism 10 includes a first rotating shaft 11, a table 12, and a leaf peeling blade 14; the first rotating shaft 11 is rotatably connected to the frame 1 through a bearing, the workbench 12 is cylindrical and fixed on the first rotating shaft 11, and six leaf stripping holes 13 penetrating through the workbench 12 are formed in the periphery of the workbench 12; the leaf stripping knife 14 is connected to the side wall of the leaf stripping hole 13 in a sliding way, the leaf stripping knife 14 is electrically connected with a micro motor for driving the leaf stripping knife to move up and down, and a switch 4 for controlling the micro motor is fixed on the handle 3. The collecting box 15 is positioned right below the leaf peeling mechanism 10; referring to fig. 4, an elastic net 16 is fixed on the upper part of the collecting box 15, the diameter of holes on the elastic net 16 is smaller than that of stems of lettuce, a supporting plate 17 is welded on the lower part of the collecting box 15, and a net cage 18 is placed on the supporting plate 17; the net cage 18 is connected with a push rod 19, one end of the push rod 19 is hinged with the net cage 18, and the other end of the push rod 19 is hinged at the eccentric position of the travelling wheel 2. The side wall of the collecting box 15 is provided with a box door for taking and placing the net box 18, the bottom of the collecting box 15 is provided with a water outlet, and the water outlet is provided with a control valve. The end of the conveying mechanism is provided with a vertical pipe 20, and the vertical pipe 20 is positioned right above one of the leaf stripping holes 13.

Referring to fig. 5, the transmission mechanism includes a pressing block 21, six ratchets 22, a second rotating shaft 23 rotatably connected to the frame 1, a ratchet 24 fixed to the second rotating shaft 23, a first bevel gear 25 and a second bevel gear 26, the pressing block 21 is slidably connected to the frame 1 and located below the conveyor belt 7, a compression spring 27 is connected between the lower end of the pressing block 21 and the frame 1, the six ratchets 22 are vertically fixed on the pressing block 21 at equal intervals, the ratchet 24 is matched with the ratchets 22, the first bevel gear 25 is fixedly connected to the first rotating shaft 11, the second bevel gear 26 is fixedly connected to the second rotating shaft 23, and the first bevel gear 25 and the second bevel gear 26 are meshed.

The specific implementation process is as follows: when the device is operated, before the lettuce is moved, the device continues to move forwards, the lettuce abuts against the movable plate 9, the movable plate 9 is enabled to turn over, the lettuce gradually approaches the cutting part 5 and cuts off the stem of the lettuce, and when the lettuce does not abut against the movable plate 9 any more, the movable plate 9 returns under the action of elastic restoring force of the coil spring to block the opening again. When the cutting part 5 moves forward to harvest the lettuce, the lettuce is likely to topple forward under the stress, and at the moment, the movable plate 9 and the baffle plate 8 block the lettuce, so that the lettuce is prevented from toppling forward and being inconvenient to collect. The cut lettuce falls onto the conveyor belt 7, and then falls into the standpipe 20 and is guided by the standpipe 20 so that the lettuce falls into the stripping aperture 13 directly below the standpipe 20. At the moment, the switch 4 is turned on, the miniature motor is controlled to drive the leaf stripping knife 14 to move upwards, the leaf stripping knife 14 moves upwards to cut off the leaves, and the lettuce stems fall into the collecting box 15 from passing through the leaf stripping holes 13.

When another lettuce is harvested into the conveyor mechanism, the conveyor belt 7 is pressed down and against the pressing block 21 below the conveyor belt 7 due to the gravity of the lettuce. The pressing block 21 moves downwards, at the moment, the pressure spring 27 is compressed, the ratchet 22 on the pressing block 21 moves downwards along with the pressing block 21, and the ratchet 24 matched with the ratchet 22 rotates; the ratchet wheel 24 rotates to drive the first rotating shaft 11 to rotate, and the first bevel gear 25 and the second bevel gear 26 are driven, so that the second rotating shaft 23 synchronously rotates, and the workbench 12 on the second rotating shaft 23 rotates, so that the other leaf stripping hole 13 rotates to be right below the vertical pipe 20, and the hole falling into the lettuce before rotates to be right below the vertical pipe 20 according to the hole rotation principle. When the lettuce continues to be conveyed and is not pressed against the pressing block 21, the pressing block 21 moves upwards to return under the action of the elastic restoring force of the pressure spring 27, the ratchet 22 moves upwards, and the ratchet 24 does not rotate due to the opposite direction, so that the workbench 12 cannot rotate. The upper moving back position of the pressing block 21 prepares for the next lettuce entering and the rotation of the workbench 12 to change the leaf stripping holes 13 right below the vertical pipes 20.

A large amount of water is put in the collecting box 15 until the water surface is higher than the elastic net 16, the lettuce falls from the leaf peeling holes 13, the stems of the lettuce are heavier and fall from the holes of the elastic net 16, and the residual leaves and broken leaves which possibly fall from the leaf peeling holes 13 at the same time cannot prop the holes on the elastic net 16 due to lighter weight and are blocked above the elastic net 16 by the elastic net 16. The stem of the lettuce falls into the net cage 18, and when the travelling wheel 2 rotates, the push rod 19 is driven to move, so that one end, connected with the net cage 18, of the push rod 19 moves up and down, the net cage 18 is driven to vibrate up and down, and the stem of the lettuce in the net cage 18 is cleaned in a vibrating manner. When the net cage 18 is filled with the stem of the lettuce, the drain hole is opened to drain the water in the collecting box 15, and then the box door is opened to take out the stem of the lettuce which is clean and leaves removed.

The steps are circularly carried out, and the work of harvesting, defoliating, cleaning and collecting a large number of lettuces can be completed simultaneously.

In addition, a plurality of bulges are arranged on the conveyor belt 7 to prevent lettuce from rolling off the conveyor.

The foregoing is merely exemplary of the present invention and the specific structures and/or characteristics of the present invention that are well known in the art have not been described in detail herein. It should be noted that modifications and improvements can be made by those skilled in the art without departing from the structure of the present invention, and these should also be considered as the scope of the present invention, which does not affect the effect of the implementation of the present invention and the utility of the patent. The protection scope of the present application shall be subject to the content of the claims, and the description of the specific embodiments and the like in the specification can be used for explaining the content of the claims.

Claims

1. The utility model provides a lettuce harvesting apparatus, includes frame, walking wheel, cutting portion, transport mechanism and collecting box are all fixed in the frame, transport mechanism includes roller and conveyer belt, its characterized in that: the leaf peeling machine comprises a machine frame, a plurality of leaf peeling holes penetrating through the machine frame are formed in the periphery of the machine frame, the leaf peeling knife is connected to the side wall of the leaf peeling holes in a sliding mode, the leaf peeling knife is electrically connected with a micro motor for driving the leaf peeling knife to move up and down, a switch for controlling the micro motor is arranged on the machine frame, and the collecting box is located under the leaf peeling machine; the conveying mechanism end is equipped with the standpipe, the standpipe is located one of them leaf hole of peeling, the conveyer belt is the elastic webbing, drive mechanism is including supporting briquetting, a plurality of ratchet, rotate and connect in the frame the second pivot, fix ratchet and bevel gear group in the second pivot, support briquetting sliding connection in the frame and be located the conveyer belt below, it is connected with the pressure spring to support between briquetting lower extreme and the frame, a plurality of the vertical equidistance of ratchet is fixed on supporting briquetting, ratchet and ratchet cooperation, first pivot passes through bevel gear group transmission with the second pivot, the welding has the handle in the frame.

2. The lettuce harvesting apparatus as claimed in claim 1, characterized in that: two symmetrical baffles are arranged at the front end of the cutting part, an opening is arranged between the two baffles, a movable plate is hinged to one baffle, and a coil spring is arranged between the movable plate and the baffle.

3. The lettuce harvesting apparatus as claimed in claim 2, characterized in that: the utility model discloses a lettuce harvesting box, including collecting box, control valve, collecting box, control valve, the collecting box upper portion is equipped with the elasticity net, elasticity net aperture is less than the diameter of lettuce stem, collecting box lower part is equipped with the backup pad, placed the box with a net in the backup pad, be equipped with the chamber door that supplies to get to put the box with a net on the collecting box lateral wall, the outlet has been seted up to the collecting box bottom, the outlet is equipped with the control valve.

4. The lettuce harvesting apparatus as claimed in claim 3, characterized in that: the net cage is connected with a push rod, one end of the push rod is hinged with the net cage, and the other end of the push rod is hinged at the eccentric position of the travelling wheel.

5. The lettuce harvesting apparatus as claimed in claim 4, wherein: the conveyor belt is provided with a plurality of bulges.