阅读说明：本技术 一种青菜头多行联合收获机 (multi-row combined harvester for header of green vegetables ) 是由 肖宏儒 金月 蒋清海 宋志禹 孙洪友 杨光 张健飞 姚森 于 2019-11-14 设计创作，主要内容包括：本发明涉及一种青菜头多行联合收获机,属于农业机械技术领域。该机包括履带底盘上的机架和动力传动机构,机架支撑夹叶提升输送机构及其前、后端的切根机构和切叶机构；夹叶提升输送机构含有至少两对内侧夹持的回环输送带,回环输送带包括沿输送方向延伸的轮架,轮架的前后两端分别装有可调位和定位的支撑带轮,轮架的长度方向上间隔铰支轮臂的一端,轮臂的另一端装有趋于夹持方向的张紧带轮；支撑带轮和张紧带轮上环绕V型带,且轮架前端的支撑带轮和张紧带轮处的V型带形成导正斜面。本发明妥善解决了青菜头收获切根、输送、除叶等一系列难题,可以实现精准切根无损输送,从而保证了机械化收获的收获质量。(The invention relates to a multi-row combined harvester for green vegetable heads, which belongs to the technical field of agricultural machinery and comprises a rack and a power transmission mechanism on a crawler chassis, wherein the rack supports a leaf clamping lifting and conveying mechanism, and a root cutting mechanism and a leaf cutting mechanism at the front end and the rear end of the leaf clamping lifting and conveying mechanism, the leaf clamping lifting and conveying mechanism comprises at least two pairs of inner-clamped loop conveying belts, each loop conveying belt comprises a wheel frame extending along the conveying direction, the front end and the rear end of each wheel frame are respectively provided with a supporting belt wheel capable of adjusting and positioning, ends of supporting wheel arms are hinged in the length direction of each wheel frame at intervals, the other ends of the wheel arms are provided with tensioning belt wheels tending to the clamping direction, the supporting belt wheels and the tensioning belt wheels are surrounded by V-shaped belts, and the supporting belt wheels at the front ends of the wheel frames and the V-shaped belts at the tensioning belt wheels form a guide inclined plane.)

The multi-row combine harvester for the cabbage heads of the varieties comprises a rack and a power transmission mechanism, and is characterized in that the rack supports a leaf clamping lifting and conveying mechanism with a low front part and a high rear part, a root cutting mechanism and a leaf cutting mechanism are respectively arranged at the front end and the rear end of the leaf clamping lifting and conveying mechanism, the rear end of the leaf clamping lifting and conveying mechanism is hinged to a stand column of the rack, a front extending arm of the stand column is connected with the middle part of the leaf clamping lifting and conveying mechanism, the front part of the leaf clamping lifting and conveying mechanism is supported on a profiling wheel, the leaf clamping lifting and conveying mechanism comprises at least two pairs of inner clamping return conveyer belts, each return conveyer belt comprises a wheel frame extending along the conveying direction, the front end and the rear end of the wheel frame are respectively provided with a position-adjustable and a position-adjustable support belt wheel, ends of hinged support wheel arms are spaced in the length direction of the wheel frame, the other ends of the tensioning wheel arms are provided with belt wheels tending to the clamping direction, the support belt wheels and the belt wheels at the front end of the wheel frame form a positive inclined plane with a V-guide belt.

2. The multi-row combined harvester for the green vegetable heads as claimed in claim 1, wherein the front arm of the upright post is connected with the middle part of the leaf clamping lifting conveying mechanism through a profiling adjusting mechanism, the profiling adjusting mechanism is provided with a profiling mounting seat fixed at the front end of the front arm and provided with a hinged joint and a height adjusting rod forming a moving pair with the hinged joint, the height adjusting rod is provided with spacing pin holes distributed at intervals, the lower end of the height adjusting rod is hinged with the upper end of an -shaped frame, a top spring sleeved on the height adjusting rod is arranged between the -shaped frame and the front arm, the lower end of the -shaped frame is fixedly connected with the middle part of the leaf clamping lifting conveying mechanism, the front part of the leaf clamping lifting conveying mechanism is supported on a height-adjustable profiling wheel, the root cutting mechanism comprises an optical disc cutter and a sawtooth disc cutter which are arranged under the guide inclined plane of the corresponding return ring conveying belt in a V-shaped overlapping manner, the vertical transmission shafts of the optical disc cutter and the sawtooth disc cutter are respectively supported on the transmission shaft mounting seats fixed on the corresponding wheel frames, and the upper end of the transmission shaft is connected with a power transmission mechanism.

3. The multi-row combined harvester for the heads of the green vegetables as claimed in claim 2, wherein the leaf cutting mechanism comprises a pair of leaf gathering roller pairs correspondingly mounted on the output end transmission mechanism of the pair of loop conveying belts for driving, the rotating shafts of the leaf gathering roller pairs are perpendicular to the conveying direction, leaf cutting circular disc cutters are mounted at the lower ends of the leaf gathering roller pairs, a leaf discharging auger with a discharge port at the end is mounted below the rear of the leaf gathering roller pairs, a leaf removing mechanism connected with the collecting device is mounted below the leaf cutting mechanism, the leaf removing mechanism comprises rubber roller pairs with the rotating direction perpendicular to the conveying direction, a shifting fork conveying chain moving towards the output port along the axial direction of the rubber roller pairs is mounted above the rubber roller pairs, a flat belt lifting device with conveying belt baffles distributed at intervals is mounted below the output port, and the collecting box is mounted below the lifting device.

4. The multi-row combine harvester for green vegetable heads as claimed in claim 3, characterized in that: the leaf clamping lifting conveying mechanism consists of four pairs of inner side clamping loop conveying belts, the leaf removing mechanism comprises a left front rubber pair roller and a right rear rubber pair roller, and a baffle with a herringbone section is arranged above the middle of the two pairs of rubber pair rollers; and turnover shafts with shifting forks are respectively arranged at the outer sides above the left front rubber pair roller and the right rear rubber pair roller.

5. The multi-row combine harvester for green vegetable heads as claimed in claim 4, characterized in that: a front shifting fork conveying chain which is looped back to the baffle is arranged above the left front rubber paired roller and the right rear rubber paired roller, and the front shifting fork conveying chain on the left front rubber paired roller and the rear shifting fork conveying chain on the right rear rubber paired roller respectively move towards a right front output port and a left rear output port along the axial direction of the rubber paired rollers; and a flat belt right lifting device and a flat belt left lifting device with conveying belt baffles distributed at intervals are respectively connected below the right front output port and the left rear output port.

6. The multi-row combine harvester for green vegetable heads as claimed in claim 5, characterized in that: the middle part of the front extending arm and the upper end of the rubber wheel stay bar form a horizontal moving pair through a slide rail, and the middle part of the stay bar is hinged with the extending end of an electric push rod arranged on the frame through a hinged mounting seat.

7. The multi-row combine harvester for green vegetable heads as claimed in claim 6, characterized in that: the transmission shaft mounting seat is provided with a vertical bearing seat which can position the axial position of the transmission shaft after being adjusted.

8. The multi-row combined harvester for the green vegetable heads as claimed in claim 7, wherein the supporting rods of the profile wheels and the profile wheel height adjusting seats arranged on the side of the leaf clamping lifting and conveying mechanism form a lockable moving pair.

Technical Field

The invention relates to an soil surface nodulation vegetable harvester with stems and leaves, in particular to a multi-row combined harvester for vegetable heads, and belongs to the technical field of agricultural machinery.

Background

The famous stem mustard of the Brassica napobrassica is a main raw material for preparing the Fuling hot pickled mustard tuber, the harvest of the Brassica napobrassica for a long time mainly adopts manual harvest, the labor intensity is high, the working efficiency is low, and the yield, the quality and the economic benefit of the hot pickled mustard tuber are seriously influenced.

However, the V-shaped knife adopted in the patent application belongs to unpowered cutting from the structural point of view, the action after the vegetable head enters the soil is similar to that of a digging shovel used for pulling, the vegetable head belongs to vegetables which are nodulated on the soil surface, the position under the soil is inevitably too low, a secondary root cutting mechanism needs to be equipped, in addition, the growth height and the diameter of a nodular stem of the vegetable head are greatly different, and the secondary root cutting mechanism is short of height limit, so that accurate root cutting cannot be realized.

In addition, the Chinese patent document with the application number of 201610521653.3 provides preserved szechuan pickle harvester, which comprises a main frame, wherein a power device, a clamping and pulling device and a front disc root cutting device are arranged on the main frame, the power device is arranged at the rear part of the main frame and comprises a power mechanism, the power mechanism is connected with a belt pulley on a reduction gearbox through a belt, the reduction gearbox is provided with a th output shaft, a th chain disc is arranged on a th output shaft, a th chain disc is connected with a second chain disc through a th chain, and the second chain disc is arranged on an input shaft of a clutch assembly.

In a word, the unique growth characteristics of the green vegetable heads, such as developed fibrous roots, fragile and easily broken stems and leaves, large size and shape difference of nodular stems, and growth height, are the reasons for difficult realization of high-quality mechanical harvesting of 'clean vegetable (without roots, damage and leaves)'.

Disclosure of Invention

The invention aims to provide green vegetable head multi-row combine harvesters which can realize reliable and lossless conveying, thereby properly solving the problem of green vegetable head harvesting and conveying and laying a foundation for ensuring the harvesting quality of mechanized harvesting.

The invention further aims to to provide vegetable head multi-row combine harvesters capable of achieving accurate root cutting, so that the harvesting quality of mechanical harvesting is effectively improved.

steps are further aimed at providing multi-row combined harvesters capable of removing harvested stems and leaves completely, so that high-quality vegetable heads meeting the commercialized requirements can be directly obtained without re-processing after mechanical harvesting.

In order to achieve the primary purpose, the basic technical scheme of the multi-row combined harvester for the green vegetable heads comprises the following steps: the leaf clamping and lifting conveying mechanism is arranged on the crawler chassis, the front end and the rear end of the leaf clamping and lifting conveying mechanism are respectively provided with a root cutting mechanism and a leaf cutting mechanism;

the rear end of the leaf clamping lifting and conveying mechanism is hinged to an upright post of the frame, and a front extending arm of the upright post is connected with the middle part of the leaf clamping lifting and conveying mechanism; the front part of the leaf clamping lifting conveying mechanism is supported on the profiling wheel;

the leaf clamping lifting conveying mechanism comprises at least two pairs of inner side clamping return ring conveying belts, each return ring conveying belt comprises a wheel frame extending along the conveying direction, supporting belt wheels capable of being adjusted in position and positioned are mounted at the front end and the rear end of each wheel frame respectively, ends of supporting wheel arms are hinged in the length direction of the wheel frames at intervals, tensioning belt wheels tending to the clamping direction are mounted at the other ends of the wheel arms, V-shaped belts are wound on the supporting belt wheels and the tensioning belt wheels, and the supporting belt wheels at the front ends of the wheel frames and the V-shaped belts at the tensioning belt wheels form a guide inclined plane.

When the harvester of the invention operates forwards, stems and leaves after root cutting are clamped by the pair of inner loop conveyor belts to be gradually lifted and conveyed, and at the moment, the conveying is not influenced no matter how the stems and leaves are in the suspension state, so that the difficult problem of harvesting and conveying the head of the green vegetables is properly solved, and a foundation is laid for ensuring the harvesting quality of mechanized harvesting.

In order to achieve the purpose of step advancing, a front extending arm of the upright post is connected with the middle part of the leaf clamping lifting and conveying mechanism through a profiling adjusting mechanism, the profiling adjusting mechanism is provided with a profiling mounting seat which is fixed at the front end of the front extending arm and is provided with a hinged joint and a height adjusting rod which forms a moving pair with the hinged joint, the height adjusting rod is provided with spacing pin holes which are distributed at intervals, the lower end of the height adjusting rod is hinged with the upper end of a -shaped frame, a top spring which is sleeved on the height adjusting rod is arranged between the -shaped frame and the front extending arm, the lower end of the -shaped frame is fixedly connected with the middle part of the leaf clamping lifting and conveying mechanism, and the front part of the leaf;

the root cutting mechanism comprises a light circular cutter disc and a sawtooth circular cutter disc which are arranged below the guide inclined plane of the corresponding loop conveying belt in a V-shaped overlapping distribution; the vertical transmission shafts of the optical disk cutter and the sawtooth disk cutter are respectively supported on transmission shaft mounting seats fixed on corresponding wheel carriers, and the upper end of the transmission shaft is in transmission connection with a power transmission mechanism positioned at the front end of the front extension arm through a universal transmission mechanism comprising two stages of universal joints.

The harvester erects the vegetable heads in opposite rows to enter the leaf clamping lifting conveying mechanism, the root part below the nodose stem is efficiently cut off by the light and tooth double-disc cutter distributed in a V shape, the cutting area of the cutter head contacted with the ground is basically avoided, and the two disc spaces are provided with fixed overlapping areas, so that the cutting resistance when the vegetable heads are shallowly buried and the root is cut is greatly reduced, and the phenomenon that a core part is cut continuously in the cutting process is avoided.

In order to achieve the purpose of further advancing steps, the leaf cutting mechanism comprises a pair of leaf gathering double rollers which are correspondingly arranged at the output end transmission mechanism of the pair of loop conveying belts and driven by the output end transmission mechanism, the rotating shafts of the leaf gathering double rollers are vertical to the conveying direction, and a leaf cutting circular disc cutter is arranged at the lower end of of the leaf gathering double rollers;

the leaf removing mechanism connected with the collecting device is mounted below the leaf cutting mechanism, the leaf removing mechanism comprises rubber rollers vertical to the rotating direction and the conveying direction, a shifting fork conveying chain moving towards an output port along the axial direction of the rubber rollers is mounted above the rubber rollers, a flat belt lifting device with conveying belt baffles distributed at intervals is received below the output port, and the collecting box is received below the lifting device.

Therefore, when the green vegetable head is conveyed to the tail end of the leaf clamping lifting conveying mechanism, the stem leaves above the nodose stems are held by the leaf-holding double rollers, are cut by the leaf-cutting circular disc cutter at the position close to the nodose stems, fall into the leaf-discharging auger under the action of the leaf-holding double rollers, and are discharged from the side of a discharge port of the leaf-discharging auger to be returned to the field.

The improvement of is that the leaf clamping lifting conveying mechanism consists of four pairs of inner clamping return conveying belts, the leaf removing mechanism comprises a left front rubber pair roller and a right rear rubber pair roller, a baffle with a herringbone cross section is arranged above the middle of the two pairs of rubber pair rollers, and turnover shafts with shifting forks are respectively arranged on the outer sides of the upper parts of the left front rubber pair roller and the right rear rubber pair roller.

The improvement of is that a shifting fork conveying chain which is looped back to the baffle is arranged above the left front rubber paired roller and the right rear rubber paired roller, the front shifting fork conveying chain on the left front rubber paired roller and the rear shifting fork conveying chain on the right rear rubber paired roller move towards a right front output port and a left rear output port along the axial direction of the rubber paired rollers respectively, and a flat belt right lifting device and a flat belt left lifting device with conveying belt baffles distributed at intervals are respectively received below the right front output port and the left rear output port.

The improvement of is that the middle part of the front arm and the upper end of the rubber wheel brace rod form a horizontal moving pair through a slide rail, and the middle part of the brace rod is hinged with the extending end of an electric push rod arranged on the frame through a hinged mounting seat.

The invention further improves in by providing a vertical bearing seat on the drive shaft mounting seat for adjusting and positioning the axial position of the drive shaft.

The invention is further improved in that the support rod of the cam wheel and the cam wheel height adjusting seat arranged on the side of the leaf clamping lifting and conveying mechanism form a lockable moving pair.

Drawings

The invention will be described in detail below with reference to the drawings and examples.

Fig. 1 is a schematic perspective view of embodiments of the present invention.

Fig. 2 is a schematic plan projection structure of fig. 1.

Fig. 3 is a top view of fig. 2.

Fig. 4 is a schematic perspective view of the root cutting mechanism in the embodiment of fig. 1.

Fig. 5 is a schematic perspective view of the leaf clamping lifting conveying mechanism in the embodiment of fig. 1.

Fig. 6 is a schematic perspective view of the leaf cutting mechanism in the embodiment of fig. 1.

Fig. 7 is a schematic perspective view of the leaf removing mechanism and the collecting device in the embodiment of fig. 1.

Fig. 8 is a schematic perspective view of the power transmission mechanism in the embodiment of fig. 1.

In the drawing, a root cutting mechanism 1, a profiling adjusting mechanism 2, a height adjusting mechanism 3, a blade removing mechanism 4, a crawler chassis 5, a collecting device 6, a power transmission mechanism 7, a blade cutting mechanism 8, a rack 8, a blade clamping lifting and conveying mechanism 9, a blade removing mechanism 10, a smooth disk cutter 1-1, a sawtooth disk cutter 1-2, a transmission shaft mounting seat 1-3, a universal transmission mechanism 1-4, a universal joint of 1-4-1, a second universal joint 1-4-2, a power transmission mechanism 1-5, a driving bevel gear box 1-6, a transmission shaft 1-7, a height adjusting rod 2-1, a profiling mounting seat 2-2, a -shaped frame 2-4, a profiling wheel 2-5, a profiling wheel height adjusting seat 2-6, a top spring 2-7 articulated head 3-1, a rubber wheel 3-2 electric push rod 3-3 articulated mounting seat, a sliding rail 3-4, a supporting rod 3-5, a supporting rod 5-1, a left lifting and conveying device 5-2-1, a lifting device 5-2-2, a tensioning head, a left side shifting fork driving mechanism 3-6, a tensioning device 2-6, a tensioning device, a left side tensioning device, a right side tensioning device, a left side tensioning device, a right side tensioning device, a rear belt pulley, a right side tensioning device, a left side tensioning device, a right side tensioning device, a rear pulley, a left side tensioning device, a right side tensioning device, a left side.

Detailed Description

The embodiment is an four-row vegetable head multi-row combine harvester, which comprises a rack 8 and a power transmission mechanism 6, wherein the rack 8 is arranged on a crawler chassis 4, the rack 8 supports a leaf clamping lifting and conveying mechanism 9 with a low front part and a high back part, the front end and the back end of the leaf clamping lifting and conveying mechanism 9 are respectively provided with a root cutting mechanism 1 and a leaf cutting mechanism 7, the rack 8 is connected with the middle part of the leaf clamping lifting and conveying mechanism 9 through a profile modeling adjusting mechanism 2, the front extending arm of the rack 8 is supported on a height adjusting mechanism 3, and the lower part of the leaf cutting mechanism 7 is connected with a leaf removing mechanism 10 of an output end bearing and receiving device 5.

Referring to fig. 1 to 3, a frame 8 on a crawler chassis 4 is provided with an upright post 8-1 and a front extending arm 8-2, the upper part of the upright post 8-1 is hinged with the rear end of a leaf clamping lifting conveying mechanism 9, the front end of the front extending arm 8-2 is connected with the middle part of the leaf clamping lifting conveying mechanism 9 through a profiling adjusting mechanism 2, the middle part of the front extending arm 8-2 and the upper end of a supporting rod of a rubber wheel 3-1 form a horizontal moving pair through a sliding rail 3-4, and the middle part of the supporting rod is hinged with the extending end of an electric push rod 3-2 arranged on the frame through a hinged mounting seat 3-3, so that a height adjusting mechanism 3 is formed, and the relative position of the frame front extending arm 8-2 and the rubber wheel 3-1 can be conveniently adjusted and controlled to be in an ideal.

The profile adjusting mechanism 2 is provided with profile mounting seats 2-2 which are fixed at the front ends of front extending arms 8-2 and are provided with hinged joints and are opposite to each row, and height adjusting rods 2-1 which are vertically inserted in holes of the hinged joints 2-7 to form moving pairs with the hinged joints, the height adjusting rods 2-1 are provided with spacing pin holes which are distributed at intervals and are used for selectively inserting limit pieces such as cotters according to height adjustment requirements, the lower ends of the height adjusting rods 2-1 are hinged with the upper ends of -shaped frames 2-3, top springs 2-6 sleeved on the height adjusting rods 2-3 are arranged between the -shaped frames 2-3 and the front extending arms 8-2, the lower ends of -shaped frames 2-3 are fixedly connected with the middle parts of wheel frames 9-5 corresponding to the leaf clamping lifting and conveying mechanisms 9, and because the left and right sides of each row are respectively provided with the left and right wheel frames 9-5, each row of the leaf clamping and the lifting and conveying mechanisms 9 can respectively adjust the inclination angle with the ground, namely the height of the foremost end of the leaf clamping and the profile wheels 2-4 and the lifting and conveying mechanisms 9 installed at the sides of the 9 , so that the profile adjusting seats can be locked and the height.

The root cutting mechanism 1 comprises a light disc cutter 1-1 and a sawtooth disc cutter 1-2 which are respectively positioned below a guide inclined plane of each corresponding loop conveyor belt and are distributed in a V-shaped overlapping manner, vertical transmission shafts 1-7 of the light disc cutter 1-1 and the sawtooth disc cutter 1-2 are respectively supported on transmission shaft mounting seats 1-3 fixed on corresponding wheel carriers 9-5, the upper ends of the transmission shafts 1-7 are in transmission connection with power transmission mechanisms 1-5 positioned at the front ends of front arms 8-2 through two-stage universal transmission mechanisms 1-4 comprising th universal joints 1-4-1 and 1-4-2, power of the power transmission mechanisms 1-5 is sourced from driving bevel gear boxes 1-6, the installation angle between the disc cutters and the ground can be adjusted through 4 installation bolts between the transmission shaft mounting seats 1-3 supporting the transmission shafts 1-7 and a rack, so that the V-shaped installation of the double disc cutters can be ensured, in addition, the vertical disc mounting seats 1-3 are provided with vertical disc mounting seats capable of adjusting the axial positions of the transmission shafts 1-7, and the axial positioning and the vertical conveying mechanism can be clamped through axial positioning screws on the vertical bearing seats 1-7.

The leaf clamping lifting conveying mechanism 9 with the input end and the output end respectively provided with the root cutting mechanism 1 and the leaf cutting mechanism 7 is shown in detail in figure 5 and consists of four pairs of inner side clamping loop conveying belts, each loop conveying belt comprises a pipe strip-shaped wheel carrier 9-5 extending along the conveying direction, the front end of each wheel carrier 9-5 is inserted with a telescopic head for supporting an adjustable supporting belt wheel 9-4, the telescopic head can be telescopically adjusted by bolts, so that the adjustable supporting belt wheel 9-4 plays a tensioning role, the rear end of the wheel carrier 9-5 is provided with a positioning supporting belt wheel 9-4', ends of tensioning supporting belt wheels 9-6 are spaced in the length direction of the wheel carrier 9-5, the other end of the wheel arm 9-6 is provided with a tensioning belt wheel 9-2 tending to the clamping direction by a spring 9-7, each supporting belt wheel and the tensioning belt wheel are surrounded by a V-type belt 9-1, the V-type belt at the front end of the wheel carrier 9-4 and the tensioning belt at the tensioning belt wheel 9-2 form a guide inclined plane 9-3, and the front end of the paired adjustable loop conveying belts.

The leaf cutting mechanism 7 comprises a pair of leaf gathering double rollers 7-1 driven by a leaf cutting transmission mechanism 7-3 correspondingly arranged at the output ends of the pair of loop back conveyor belts, as shown in figure 6, the rotating shafts of the leaf gathering double rollers 7-1 are vertical to the conveying direction, positioning support belt wheels 9-4' are sleeved at the lower part of the leaf gathering double rollers, leaf cutting circular cutters 7-2 are arranged at the lower ends of of each pair of leaf gathering double rollers 7-1, and a leaf discharging auger 7-4 with a discharge port 7-5 at the end is supported at the rear lower part of the leaf gathering double rollers 7-1.

The lower part of the leaf cutting mechanism 7 is provided with a leaf removing mechanism 10 connected with the collecting device 5, as shown in figure 7, the leaf removing mechanism 10 comprises a left front rubber pair roller 10-1-1 and a right rear rubber pair roller 10-1-2 with the rotating direction vertical to the conveying direction, and a baffle plate 10-3 with a herringbone cross section is arranged above the middle of the two pairs of rubber pair rollers, so that fallen cauliflower head tumor-shaped stems are respectively guided between the rubber pair rollers. The outer sides of the upper parts of the left front rubber pair roller 10-1-1 and the right rear rubber pair roller 10-1-2 are provided with turnover shafts 10-2 with shifting forks distributed at intervals, and the turnover shafts are used for stirring the vegetable heads to turn over, so that blades at all parts of the turnover shafts can be removed completely. And a shifting fork conveying chain 10-4 which is looped to the baffle plate 10-3 is also arranged above the two pairs of rubber rollers, and the front part of the shifting fork conveying chain on the left front rubber roller 10-1-1 and the rear part of the shifting fork conveying chain on the right rear rubber roller 10-1-2 respectively move towards the right front output port 10-5 and the left rear output port 10-6 along the axial direction of the rubber rollers, so that the cauliflower head nodular stems on the two pairs of rubber rollers can be respectively shifted to the corresponding output ports. The lower parts of the two outlets are respectively provided with a flat belt left lifting device 5-2-1 and a flat belt right lifting device 5-2-2 with a baffle 5-2-3 of a conveying belt distributed at intervals, and the lower parts of the two lifting devices are respectively provided with a collecting box 5-1.

The power transmission mechanism 6 of the embodiment is as shown in fig. 8, the power output shaft of the engine 6-1 is in transmission connection with the cutting transmission mechanism 6-7, the leaf clamping transmission mechanism 6-4 and the leaf removing transmission mechanism 6-5 through the middle transmission shaft 6-2 and the right transmission half shaft 6-6 with the electromagnetic clutch 6-8 and the left transmission half shaft 6-3 with the second electromagnetic clutch 6-9 respectively, the transmission links of the specific loop-back conveying belt, the leaf cutting transmission, the rotation of the rubber roller pair, the rotation of the turnover shaft and the like are not general transmission mechanisms such as gears and chain belts, and detailed description is not provided.

Experiments prove that the four-row green vegetable head multi-row combined harvester of the embodiment has the following remarkable advantages:

1) the outer sides of the left and right wheel frames 9-5 of each row are provided with profile wheels 2-4, so that the inclination angle between the leaf clamping lifting conveying mechanism 9 and the ground can be adjusted by adjusting the height from the foremost end to the ground, thereby being suitable for the smooth harvesting of various types of vegetable heads;

2) the initial height of the two disc cutters 1-1 and 1-2 from the ground can be adjusted through the transmission shaft mounting seat 1-3, and the height of the vertical transmission shaft 1-7 can also be positioned and adjusted by a set screw of a vertical bearing seat on the mounting seat, so that the requirement of accurate root cutting is practically met;

3) each row of -shaped frames 2-3, the lower ends of which are fixedly connected with the wheel frames 9-5 corresponding to the leaf clamping lifting and conveying mechanism 9 respectively, can be selectively installed and limited and adjusted on the profiling installation seat 2-2 through the height adjusting rods 2-1 on the upper portions of the frames, so that when a field block in front is heightened, the top spring is compressed, the header is lifted, when the field block in front is lowered, the top spring is reset, the header is lowered, independent and self-adaptive profiling of each row is realized, steps are carried out in the actual harvesting operation process, accurate root cutting is ensured, the requirement on the flatness of the field block is lower, and the adaptability is high;

4) when the machine needs to be transferred, the electric push rod 3-2 extends out, the hinged slide rail 3-4 of the support rod 3-5 above the rubber wheel 3-1 moves forwards, the forward extending arm 8-2 is pushed to be lifted, and the header is driven to be integrally improved to be conveniently transferred;

5) the leaves are clamped by the leaf clamping lifting conveying device, so that the leaves can be reliably conveyed no matter how the shape and size of the tumor-shaped stem are individual, and the tumor-shaped stem cannot be damaged;

6) when the root-cut vegetable heads are conveyed to the tail end of the leaf clamping lifting conveying device, most of the leaves above the nodose stems are cut off by the leaf cutting disc cutter, and fall into the leaf discharging auger under the action of the leaf collecting roller to be discharged and returned to the field.

In a word, the harvesting machine for the green vegetable heads with the cutting table of the embodiment properly solves a plurality of harvesting problems which cannot be solved in the prior art, is suitable for the growth characteristics of the green vegetable heads, and can realize the mechanized harvesting of the green vegetable heads with high quality and high efficiency. In addition to the above embodiments, the present invention may have other embodiments. All equivalents and all changes that come within the meaning and range of equivalency of the claims are to be embraced within their scope.