Adjustable harvesting structure of Chinese chive harvesting machine

Abstract

The utility model discloses an adjustable harvesting structure of a Chinese chive harvesting machine, which belongs to the technical field of agricultural equipment and comprises a rack, the rack is arranged on a chassis structure, a grain lifting shell is arranged at the front end of the rack, two transverse shafts are arranged at the rear end of the rack, and two vertical shafts are arranged at the front end of the rack. One transverse shaft and one corresponding vertical shaft form a conveying belt shaft set, the two conveying belt shaft sets form a leek conveying channel, a harvesting wheel is arranged below the front end of the leek conveying channel, an inclined height adjusting structure is arranged between a front wheel of the chassis structure and the chassis structure, and a connecting box is arranged between the grain lifting shell and the front end of the rack. A grain lifting horizontal adjusting structure used for keeping the bottom of the grain lifting shell in a horizontal state is arranged between the grain lifting shell and the connecting box. According to the utility model, the integral height adjustment is adopted to replace the distributed cutter group adjustment, the harvesting wheel is good in operation stability, and the adjustable grain lifter structure is arranged, so that the adaptation of the adjustable Chinese chive harvesting height and the corresponding adjustable grain lifter is realized.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of agricultural equipment, especially relates to adjustable harvesting structure of leek harvesting machinery. BACKGROUND

[0002] Leek harvesting machinery as an important part of modern agricultural equipment plays a key role in improving work efficiency and reducing labor intensity. The current mainstream technology mainly uses a harvesting blade height adjusting device to realize stubble height control. For example, Chinese patent (CN220087975U) discloses an automatic height-adjustable leek harvesting machine, which relates to the technical field of crop harvesters. The machine realizes dynamic leveling through independent height adjusting components and sensors. However, this solution has significant defects: first, the knife blade adjusting mechanism needs to be equipped with additional height adjusting components and driving devices, which complicates the mechanical structure, increases manufacturing costs, and increases the risk of failure. Second, during the height adjustment process, a dynamic gap is formed between the blade and the chassis. When the ground surface fluctuates greatly, this gap can easily form a material leakage channel, causing leek scattering and loss.

[0003] The technical problems existing in the prior art mainly include the following two aspects: 1. The height adjustment module is highly coupled with the harvesting execution mechanism, and a local adjustable knife group design is often used. This decentralized adjustment method not only increases the transmission complexity but also damages the overall stability of the harvesting mechanism. 2. The movement coordination between the straw support and the harvesting mechanism is insufficient. Traditional mechanical linkage devices cannot maintain the horizontal reference of the straw support during dynamic height adjustment, resulting in a decrease in harvesting quality. Especially when using front wheel height adjustment to adjust the overall harvesting height, the traditional rigidly connected straw support device will shift its posture due to changes in the machine's inclination, which will affect the straight-up conveying of leeks. SUMMARY

[0004] To overcome the technical problems described in the background art, the utility model provides an adjustable harvesting structure for leek harvesting machinery. The overall height adjustment replaces the decentralized knife group adjustment, the harvesting wheel runs stably, and the adjustable straw support structure is provided, which realizes the adjustment of the leek harvesting height and the adjustment of the corresponding straw support.

[0005] The utility model discloses a technical scheme lies in: a leek harvesting mechanical adjustable harvesting structure, including frame, chassis structure, support the plough structure, leek conveyer belt, horizontal shaft, vertical shaft and harvesting wheel, the frame sets up on the chassis structure, and the front end of frame is equipped with the support plough casing, and the rear end of frame is equipped with two horizontal shafts and is equipped with two vertical shafts in the front end, and one horizontal shaft and one corresponding vertical shaft form a conveyer belt axle group, and the first conveyer belt and second conveyer belt are equipped respectively on two conveyer belt axle groups, and the front end of first conveyer belt and second conveyer belt is vertical respectively and rear end is horizontal respectively, and the leek conveyer belt channel that forms a from vertical state to horizontal state conversion between first conveyer belt and second conveyer belt, and the front end below of leek conveyer belt channel is the front gap of chassis structure, and the front end of chassis structure is equipped with harvesting wheel on one side in the front gap, and the front wheel is equipped respectively on the left and right sides of the front end of chassis structure and the rear wheel is equipped respectively on the left and right sides of the rear end, and the front wheel is equipped between the chassis structure and is equipped with the inclination height -adjusting structure for adjusting the front wheel relative chassis up and down movement, and the front end between support plough casing and frame is equipped with the connecting box, and the support plough casing and connecting box are equipped with the support plough horizontal adjusting structure for keeping the bottom of support plough casing in horizontal state.

[0006] Further, the support plough horizontal adjusting structure includes a side shaft, a rotating connecting block, a bearing baffle, an inclined surface engaging table and an outer plate, the front end of the connecting box is open and embedded with the rotating connecting block of the rear end of the support plough casing, the outer side of the connecting box is provided with the outer plate and the inclined surface engaging table is arranged on the inner inclined surface, the side shaft is embedded between the outer plate and the inclined surface engaging table, the side shaft also penetrates the rotating connecting block, so that the support plough casing can swing up and down around the side shaft relative to the connecting box, and the part of the rear side of the support plough casing below the rotating connecting block is threaded with a horizontal adjusting rod, the rear end of the horizontal adjusting rod extends into the connecting box and abuts against the bearing baffle of the connecting box.

[0007] Further, the central part of the harvesting wheel is provided with a driving shaft, the upper end of the driving shaft penetrates the chassis structure and is connected with the motor on the chassis structure, the central part of the harvesting wheel is a disc structure, a plurality of sickle-shaped harvesting blades are uniformly arranged on the circumferential side wall of the disc structure, and the upper end surface of the harvesting blade, the upper end surface of the disc structure and the lower end surface of the chassis structure are respectively correspondingly parallel.

[0008] Further, the inclination height-adjusting structure includes a fixed sleeve block, an adjusting screw and an adjusting connecting block, the fixed sleeve block is fixedly arranged at the front corner of the chassis structure and the adjusting connecting block is embedded from bottom to top at the lower end of the fixed sleeve block, the front wheel is arranged on the side of the lower part of the adjusting connecting block away from the chassis structure, the adjusting screw is embedded at the upper end of the adjusting connecting block, the adjusting screw is threaded from the upper end of the fixed sleeve block and locked at the lower end of the adjusting connecting block, so that the adjusting screw can only rotate relative to the adjusting connecting block, and under the condition of rotating the adjusting screw, the adjusting connecting block can only move up and down in the fixed sleeve block, so that the front wheel relatively moves up and down relative to the chassis structure.

[0009] Further, the lower part of the adjusting connecting block is provided with a shaft sleeve on the side wall away from the side wall of the chassis structure, and the wheel shaft of the front wheel is embedded in the shaft sleeve.

[0010] Further, the side wall of the adjusting connecting block is provided with an engaging groove corresponding to the fixed sleeve block, so that the corresponding part of the fixed sleeve block is buckled on the engaging groove, so as to constrain the movement of the adjusting connecting block relative to the fixed sleeve block except for the up-down movement.

[0011] The utility model discloses the above-mentioned technology produces the beneficial effect has following several articles.

[0012] 1, the utility model discloses the integral type height -adjusting replaces the dispersed sword group regulation, is connected through setting up the inclined height -adjusting structure between the chassis structure and the front wheel, can adjust the up-down movement of the front wheel relative to the chassis, and further makes the harvesting height of the harvesting wheel adjustable, and the adjusting structure is relatively simple, and will not occupy the space of the harvesting wheel place that is compact originally additionally, so that the gap between the harvesting wheel and the chassis structure is fixed, can effectively avoid the leeks after harvesting from the gap, and the chassis structure is in the state of high back and low front under the normal condition, helps the harvesting wheel to rotate to the upper rear in the process after completing the harvesting action, to a certain extent, can play to the leeks to be carried to two leek conveying channels, further avoid the leeks to drop.

[0013] 2, the utility model discloses the central of the harvesting wheel is disc structure, and the circumference side wall of disc structure is evenly provided with a plurality of sickle -shaped harvesting blades, and the upper end surface of harvesting blade, the upper end surface of disc structure, the lower end surface of chassis structure correspondingly parallel, compared with the straight blade type harvesting blade, the leeks after the sickle -shaped harvesting blade harvesting are more neat, and convenient subsequent conveying storage.

[0014] 3, the utility model discloses the front of the frame is provided with two symmetrical wheat supporting devices, and the wheat supporting device includes a wheat supporting shell and a connecting box, and the wheat supporting shell is realized relative overturning with the connecting box through the wheat supporting horizontal adjusting structure, and under the action of self -weight, the position of the wheat supporting shell and the connecting box after adjusting can be relatively fixed, realizing the adaptation of the leek harvesting height adjustable and the wheat supporting device corresponding adjustable. ACCURACY OF DRAWINGS

[0015] Figure 1 It is the structural schematic diagram of the utility model.

[0016] Figure 2 It is the top view of the utility model.

[0017] Figure 3 It is the right view of the utility model.

[0018] Figure 4 It is the structural schematic diagram of the utility model after removing the right front wheel.

[0019] Figure 5 is Figure 4 is a partial enlarged view of A in the figure.

[0020] Figure 6 is a structure schematic view of the leek collecting box of the utility model.

[0021] Figure 7 is a structure schematic view of the leek supporting device of the utility model.

[0022] Figure 8 is Figure 7 is a top view of the structure shown.

[0023] Figure 9 is Figure 7 is a structure schematic view of one leek supporting shell being detached from the connecting box in the structure shown.

[0024] In the figure: 1, right top plate, 2, upper connecting plate, 3, upper drive shaft, 4, lower drive shaft, 5, lower connecting plate, 6, rear wheel, 7, vertical support, 8, right bottom plate, 9, motor, 10, first conveying belt, 11, second conveying belt, 12, adjusting connecting block, 13, front wheel, 14, fixed sleeve block, 15, adjusting screw, 16, left bottom plate, 17, left top plate, 18, vertical rotating shaft, 19, harvesting wheel, 20, drive rotating shaft, 21, shaft sleeve, 22, connecting cavity, 23, joint groove, 24, lower clamping plate, 25, connecting box, 26, outer side plate, 27, side rotating shaft, 28, leek supporting shell, 29, horizontal adjusting rod, 30, upper clamping plate, 31, horizontal line adjusting long hole, 32, longitudinal adjusting long hole, 33, scale rod, 34, rear connecting corner block, 35, load box front wheel, 36, load bearing box, 37, load box rear wheel, 38, upper connecting corner block, 39, connecting horizontal block, 40, hand pushing frame, 41, bearing baffle, 42, rotating connecting block, 43, inclined surface joint table. DETAILED DESCRIPTION

[0025] Example one: as Figure 1The utility model provides a kind of adjustable harvesting structure of leek harvesting machinery, including rack, chassis structure, support wheat structure, leek conveyor belt, upper drive shaft 3, lower drive shaft 4, vertical pivot 18, harvesting wheel 19, side pivot 27, rotation connecting block 42, bearing baffle 41, inclined plane joint table 43 and outside plate 26, rack is set on chassis structure, the front end of rack is equipped with support wheat shell 28, the rear end of rack is equipped with upper drive shaft 3 and lower drive shaft 4 and extends horizontally, the front end of rack is equipped with two vertical pivots 18, upper drive shaft 3 and lower drive shaft 4 are formed with a corresponding vertical pivot 18 respectively and a conveyor belt shaft group, first conveyor belt 10 and second conveyor belt 11 are respectively equipped on two conveyor belt shaft groups, the front end of first conveyor belt 10 and second conveyor belt 11 is vertical respectively and rear end is horizontal respectively, first conveyor belt 10 and second conveyor belt 11 form a leek conveying channel converted from vertical state to horizontal state between, the front end below of leek conveying channel is the front gap of chassis structure, the front end of chassis structure is equipped with harvesting wheel 19 in one side of front gap, the front end of chassis structure is equipped with front wheel 13 respectively left and right sides and rear end is equipped with rear wheel 6 respectively left and right sides, front wheel 13 is equipped with inclination height adjustment structure between and chassis structure for adjusting the up-and-down movement of front wheel 13 relative to chassis, inclination height adjustment structure includes fixed sleeve block 14, adjusting screw 15 and adjusting connecting block 12, fixed sleeve block 14 is fixedly arranged at the front corner of chassis structure and lower end is embedded with adjusting connecting block 12 from bottom to top, the side of the lower part of adjusting connecting block 12 away from chassis structure is equipped with front wheel 13, the upper end of adjusting connecting block 12 is embedded with adjusting screw 15, adjusting screw 15 is screwed from the upper end of fixed sleeve block 14 and is locked on adjusting connecting block 12 and can rotate relative to adjusting connecting block 12, under the condition that adjusting screw 15 rotates, adjusting connecting block 12 can only move up and down in fixed sleeve block 14, so that front wheel 13 relatively up-and-down displacement relative to chassis structure, in turn, the harvesting height of harvesting wheel 19 is adjustable, so that the adjustment structure is relatively simple, and it will not occupy the space that is originally compact at harvesting wheel 19 additionally, so that the gap between harvesting wheel 19 and chassis structure is fixed, can effectively avoid the leek after harvesting from the gap, and the chassis structure is in the state of high rear and low front under normal conditions, it is helpful to the harvesting wheel 19 in the process of rotating backward and upward after completing harvesting action, to a certain extent, it can play the role of supporting and sending leek into two leek conveying channels, further avoid leek falling, and at the same time, in order to make the bottom of support wheat shell 28 still keep horizontal, connecting box 25 is arranged between the front end of support wheat shell 28 and rack, the rear end of connecting box 25 is fixed by embedding between lower clamping plate 24 and upper clamping plate 30 on the upper and lower sides of the front end of rack and through bolt, the fastening of connecting box 25 relative to rack is realized, the front end of connecting box 25 is open and embedded with the rotation connecting block 42 of the rear end of support wheat shell 28, outside plate 26 is equipped on the outside of connecting box 25 and inclined plane joint table 43 is equipped on the inside inclined plane,The lateral plate 26 is embedded with a lateral rotation shaft 27 between the inclined surface joint table 43 and the rotation connecting block 42, so that the wheat supporting shell 28 can swing up and down around the lateral rotation shaft 27 relative to the connecting box 25, and the part of the rear side of the wheat supporting shell 28 below the rotation connecting block 42 is threaded with a threaded horizontal adjusting rod 29, the rear end of the horizontal adjusting rod 29 extends into the connecting box 25 and abuts against the bearing baffle 41 of the connecting box 25.

[0026] The adjusting screw 15 can adopt two structures, one is that the lower part of the adjusting screw 15 is in a stepped rod structure, that is, the lower part of the adjusting screw 15 is provided with a small-diameter screw segment part with an outer diameter smaller than that of the upper part, the small-diameter screw segment part is embedded into the through hole of the upper part of the adjusting connecting block 12 and reaches the connecting cavity 22, and the part in the connecting cavity 22 is threaded with a locking nut or penetrates a plug, so that the lower part of the adjusting screw 15 can only rotate relative to the adjusting connecting block 12, and the lower part of the adjusting screw 15 is locked with the adjusting connecting block 12. Figure 5 The other is that, as shown in the figure, the adjusting screw 15 is a stud with a hexagonal block at the upper end, the stud penetrates the upper part of the fixed sleeve block 14 and the upper part of the adjusting connecting block 12 from top to bottom and reaches the connecting cavity 22, and a locking nut is threaded on the stud in the connecting cavity 22, and a locking nut is also threaded on the part close to the upper end face of the adjusting connecting block 12, so that the stud can only rotate relative to the adjusting connecting block 12 and cannot move up and down, and a nut is welded on the upper end face of the fixed sleeve block 14, the nut is also threaded on the adjusting screw 15, or a threaded hole is directly provided on the part penetrated by the stud on the fixed sleeve block 14, so that the stud is threaded with the threaded hole on the fixed sleeve block 14, so that the stud moves up and down relative to the fixed sleeve block 14 when the stud rotates, and further drives the adjusting connecting block 12 to move up and down relative to the fixed sleeve block 14.

[0027] In order to facilitate observation of the movement of the adjusting screw 15 relative to the fixed sleeve block 14, a scale rod 33 is penetrated through the fixed sleeve block 14, the scale rod 33 is provided with height scales from bottom to top, for example, scales in millimeters, and the lower end of the scale rod 33 abuts against the upper end face of the adjusting connecting block 12, so that the current adjusting height of the adjusting screw 15 can be obtained by observing the scales on the scale rod 33 corresponding to the upper end face of the fixed sleeve block 14.

[0028] The lower part of the adjusting connecting block 12 is provided with a shaft sleeve 21 on the side wall away from the bottom disc structure, the shaft sleeve 21 is embedded with the wheel shaft of the front wheel 13, and the side wall of the adjusting connecting block 12 is provided with an engagement groove 23 corresponding to the fixed sleeve block 14, so that the corresponding part of the fixed sleeve block 14 is buckled on the engagement groove 23, so as to constrain the movement of the adjusting connecting block 12 relative to the fixed sleeve block 14 except up and down movement.

[0029] The central part of the harvesting wheel 19 is provided with a driving shaft 20, the upper end of the driving shaft 20 penetrates through the chassis structure and is connected with the motor 9 on the chassis structure, the central part of the harvesting wheel 19 is a disc structure, a plurality of sickle-shaped harvesting blades are uniformly arranged on the circumferential side wall of the disc structure, and the upper end surface of the harvesting blade, the upper end surface of the disc structure and the lower end surface of the chassis structure are respectively corresponding and parallel.

[0030] The chassis includes a left top plate 17, a right top plate 1, a vertical support 7, an upper connecting plate 2 and a lower connecting plate 5, the left top plate 17 and the right top plate 1 are horizontally distributed left and right respectively and are oppositely curved at the front ends, vertical shafts 18 are respectively rotatably connected to the front ends of the left top plate 17 and the right top plate 1, upper connecting plates 2 vertically downwardly extending are respectively arranged at the rear ends of the left top plate 17 and the right top plate 1, an upper driving shaft 3 is rotatably connected between the two upper connecting plates 2, a lower driving shaft 4 is below the upper driving shaft 3, lower connecting plates 5 are respectively arranged at the two ends of the lower driving shaft 4, the lower ends of the lower connecting plates 5 are fixedly arranged on the chassis structure, the chassis structure is divided into a right chassis 8 and a left chassis 16, vertical supports 7 are respectively welded between the middle parts of the left chassis 16 and the left top plate 17 and between the middle parts of the right chassis 8 and the right top plate 1, and the front ends of the left chassis 16 and the right chassis 8 are respectively nested in the lower ends of the corresponding vertical shafts 18.

[0031] In use, the relative positions of the adjusting screw 15 and the fixed sleeve block 14, that is, the relative positions of the fixed sleeve block 14 and the adjusting connecting block 12, can be adjusted by rotating the hexagonal block at the upper end of the adjusting screw 15 by a wrench, so as to realize the pitch adjustment of the chassis structure, and the harvesting blades on the chassis structure, that is, the front side, also have a certain pitch change, so that the height of the working part at the front end of the harvesting blade relative to the ground is adjusted, and the hexagonal block at the front end of the horizontal adjusting rod 29 is rotated by a wrench, so that the horizontal adjusting rod 29 moves forward and backward relative to the supporting and weeding shell 28, the rear end of the horizontal adjusting rod 29 abuts against the fixed bearing baffle 41 in the connecting box 25, the supporting and weeding shell 28 is adjusted to rotate around the side rotating shaft 27, and the upward and downward turning action of the supporting and weeding shell 28 relative to the connecting box 25 is realized, so as to realize the adjustment that the bottom surface of the supporting and weeding shell 28 remains horizontal, and the position of the supporting and weeding shell 28 after the adjustment of the connecting box 25 can be fixed relative to the self-weight, so as to realize the matching of the adjustable height of the leek harvesting and the adjustable supporting and weeding, and in order to conveniently determine whether the bottom of the supporting and weeding shell 28 is horizontal, a level can be arranged on the horizontal ground in the supporting and weeding shell 28.

[0032] In order to conveniently adjust the width of the leek conveying channel, realize the adjustment of the distance between the first conveying belt 10 and the second conveying belt 11, and adjust the distance between the upper driving shaft 3 and the lower driving shaft 4, longitudinal adjustment long holes 32 are arranged on the upper connecting plates 2 and the lower connecting plates 5 corresponding to the upper driving shaft 3 and the lower driving shaft 4, respectively. By loosening the nuts at the ends of the upper driving shaft 3 and the lower driving shaft 4, the upper driving shaft 3 and the lower driving shaft 4 are moved up and down along the corresponding longitudinal adjustment long holes 32, the distance between the upper driving shaft 3 and the lower driving shaft 4 is adjusted, and at the same time, the two vertical rotating shafts 18 are also adjusted. The upper ends and the lower ends of the two vertical rotating shafts 18 are moved left and right along the horizontal adjustment long holes 31 on the right top plate 1 and the right bottom plate 8 and the horizontal adjustment long holes 31 on the left top plate 17 and the right bottom plate 8, that is, by loosening the nuts at the upper ends and the lower ends of the two vertical rotating shafts 18, the two vertical rotating shafts 18 are moved along the horizontal adjustment long holes 31, and the distance between the two vertical rotating shafts 18 is adjusted. In this way, by adjusting the distance between the two vertical rotating shafts 18 and matching the distance between the upper driving shaft 3 and the lower driving shaft 4, the width of the leek conveying channel is adjusted.

[0033] In order to change the direct discharge of the harvested leeks from the rear of the rack to the ground, as shown in Figure 6 the embodiment, rear connecting corner blocks 34 are arranged on the lower connecting plates 5 at the rear end of the rack, and a load carrying box 36 with an open front end is connected between the two rear connecting corner blocks 34. Load box front wheels 35 and load box rear wheels 37 are arranged on the left and right sides of the load carrying box 36, respectively. In order to facilitate pushing, upper connecting corner blocks 38 are arranged on the left and right sides of the upper end of the rack, respectively, and a connecting cross block 39 is arranged between the two upper connecting corner blocks 38. A rearward extending hand pushing frame 40 is arranged on the connecting cross block 39, which extends rearward beyond the rear end of the load carrying box 36, realizing the manual pushing operation mode.

Claims

1. A leek harvesting machine with an adjustable harvesting structure, comprising a frame, a chassis structure, a supporting structure, a leek conveying belt, a horizontal shaft, a vertical shaft and a harvesting wheel (19), the frame is arranged on the chassis structure, the front end of the frame is provided with a supporting shell (28), the rear end of the frame is provided with two horizontal shafts and the front end is provided with two vertical shafts, one horizontal shaft and one corresponding vertical shaft form a conveying belt shaft group, the first conveying belt (10) and the second conveying belt (11) are respectively arranged on the two conveying belt shaft groups, the front end of the first conveying belt (10) and the second conveying belt (11) is vertically arranged and the rear end is horizontally arranged, a leek conveying channel is formed between the first conveying belt (10) and the second conveying belt (11) and the leek conveying channel is converted from a vertical state to a horizontal state, the front end of the leek conveying channel is below the front opening of the chassis structure, the harvesting wheel (19) is arranged on one side of the chassis structure at the front opening, the front end of the chassis structure is respectively provided with front wheels (13) on the left and right sides and the rear end is respectively provided with rear wheels (6) on the left and right sides, characterized in that: The front wheel (13) and the chassis structure are provided with a tilt height adjustment structure for adjusting the up and down movement of the front wheel (13) relative to the chassis, and the front end of the sheaf supporting shell (28) and the frame is provided with a connecting box (25), and the sheaf supporting shell (28) and the connecting box (25) are provided with a sheaf horizontal adjustment structure for keeping the bottom of the sheaf supporting shell (28) in a horizontal state.

2. The adjustable harvesting structure of a leek harvesting machine according to claim 1, characterized in that: The sheaf horizontal adjustment structure comprises a side rotating shaft (27), a rotating connecting block (42), a bearing baffle (41), an inclined surface engaging table (43) and an outer side plate (26), the front end of the connecting box (25) is open and embedded with the rotating connecting block (42) of the rear end of the sheaf supporting shell (28), the outer side of the connecting box (25) is provided with the outer side plate (26) and the inner side inclined surface is provided with the inclined surface engaging table (43), the outer side plate (26) and the inclined surface engaging table (43) are embedded with the side rotating shaft (27), the side rotating shaft (27) also penetrates the rotating connecting block (42), so that the sheaf supporting shell (28) can swing up and down around the side rotating shaft (27) and relative to the connecting box (25), and the part of the rear side of the sheaf supporting shell (28) below the rotating connecting block (42) is threaded with a horizontal adjustment rod (29), the rear end of the horizontal adjustment rod (29) extends into the connecting box (25) and abuts against the bearing baffle (41) of the connecting box (25).

3. The adjustable harvesting structure of a leek harvesting machine according to claim 2, characterized in that: The central part of the harvesting wheel (19) is provided with a driving shaft (20), the upper end of the driving shaft (20) penetrates the chassis structure and is connected with the motor (9) on the chassis structure, the central part of the harvesting wheel (19) is a disc structure, a plurality of sickle-shaped harvesting blades are uniformly arranged on the circumferential side wall of the disc structure, the upper end surface of the harvesting blade, the upper end surface of the disc structure and the lower end surface of the chassis structure are respectively corresponding parallel.

4. The adjustable harvesting structure of a leek harvesting machine according to claim 3, characterized in that: The tilt height adjustment structure comprises a fixed sleeve block (14), an adjustment screw rod (15) and an adjustment connecting block (12), the fixed sleeve block (14) is fixedly arranged at the front corner of the chassis structure and the lower end is embedded with the adjustment connecting block (12) from bottom to top, the lower part of the adjustment connecting block (12) is provided with the front wheel (13) away from the side wall of the chassis structure, the upper end of the adjustment connecting block (12) is embedded with the adjustment screw rod (15), the adjustment screw rod (15) is threaded from the upper end of the fixed sleeve block (14) and locked at the lower end of the adjustment connecting block (12), so that the adjustment screw rod (15) can only rotate relative to the adjustment connecting block (12), under the condition of rotation of the adjustment screw rod (15), the adjustment connecting block (12) can only move up and down in the fixed sleeve block (14), so that the front wheel (13) can move up and down relative to the chassis structure.

5. The adjustable harvesting structure of a leek harvesting machine according to claim 4, characterized in that: The lower part of the adjustment connecting block (12) is provided with a shaft sleeve (21) away from the side wall of the chassis structure, and the shaft sleeve (21) is embedded with the axle of the front wheel (13).

6. The adjustable harvesting structure of a leek harvesting machine according to claim 5, characterized in that: The side wall of the adjusting connecting block (12) is provided with an engaging groove (23) corresponding to the fixed sleeve block (14), so that the corresponding part of the fixed sleeve block (14) is buckled on the engaging groove (23), so as to restrict the movement of the adjusting connecting block (12) relative to the fixed sleeve block (14) except up and down movement.

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