Ear picking device of fresh corn harvester and fresh corn harvester

Abstract

The utility model discloses a fresh corn machine ear picking device and a fresh corn harvester, the fresh corn machine ear picking device comprises an ear picking frame, a driving mechanism and two ear picking mechanisms are arranged on the ear picking frame, the two ear picking mechanisms are arranged side by side, each ear picking mechanism comprises a driving wheel, a driven wheel, a seedling pulling chain, a stem pulling roller and ear picking plates, and an ear picking channel is formed between the two ear picking plates. The ear picking channel is narrow in front and wide in rear, the grain pulling teeth are distributed on the outer side wall of the grain pulling chain at intervals, and the crossing distance of the grain pulling teeth at the front end of the ear picking channel is large, so that the clamping force of the grain pulling chain on stalks at the front end is increased, the grain lifting effect can be achieved, pushing over of the stalks by the ear picking device can be reduced, and the phenomenon that ears are clamped at the front end can be effectively avoided; the crossing distance of the grain pulling teeth at the rear end of the ear picking channel is small, even if ears are blocked at the rear end of the ear picking channel, clamping damage of the grain pulling teeth to the ears can be avoided, the ears can be smoothly pulled down by the stem pulling roller, the protection performance on the corn ears is better, corn pulp cannot be damaged, the product quality can be improved, and the production efficiency is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to agricultural machinery technical field, in particular to a kind of ear picking device of fresh corn machine. In addition, the utility model further relates to a kind of fresh corn harvester comprising the ear picking device of above-mentioned fresh corn machine. BACKGROUND

[0002] With the development of agricultural technology and the adjustment of planting structure, people's dietary structure is gradually changing, and higher requirements are put forward for the taste and quality of food. At the same time, in recent years, the demand for seed production and fresh corn is increasing, which makes the market demand for fresh corn increase year by year.

[0003] In the prior art, the two weeding chains of the ear picking device of fresh corn machine are basically parallel, and a weeding channel with consistent front and rear widths is formed between the two weeding chains (the feeding end is the front end). The weeding tines on the weeding chains have a too large cross distance at the rear end of the weeding channel, which can cause congestion of ears at the rear end of the weeding channel when there are many ears (high-density planting of crops, high-yield corn) and high-speed harvesting, and can easily lead to crushing of the ears. SUMMARY

[0004] The utility model provides an ear picking device of fresh corn machine and a fresh corn harvester to solve the technical problem that the ear picking device of fresh corn machine can cause congestion of ears at the rear end of the weeding channel when there are many ears and high-speed harvesting, and can easily lead to crushing of the ears.

[0005] According to one aspect of the utility model, an ear picking device of fresh corn machine is provided, which includes a picking frame, a driving mechanism and two picking mechanisms driven by the driving mechanism are arranged on the picking frame, the two picking mechanisms are arranged side by side, the picking mechanism includes a driving wheel driven by the driving mechanism, a driven wheel rotatably arranged on the picking frame, a weeding chain arranged around the driving wheel and the driven wheel, a stem pulling roller arranged below the weeding chain and driven by the driving mechanism, and a picking plate arranged between the weeding chain and the stem pulling roller, a picking channel is formed between the two picking plates, the width of the feeding end of the picking channel is W1≥25 mm, the width of the discharging end of the picking channel is W2≥45 mm, weeding tines are arranged on the outer side wall of the weeding chain at intervals, the weeding tines on the two weeding chains are arranged alternately, the cross distance of the weeding tines on the two weeding chains near the feeding end is L1≥45 mm, and the cross distance of the weeding tines on the two weeding chains near the discharging end is L2≥25 mm.

[0006] In this embodiment, the working distance L0 between the axis of the driving wheel and the axis of the driven wheel is L0≥1000 mm.

[0007] In this embodiment, the ear picking mechanism also includes a tensioning mechanism for tensioning the straw chain, and the tensioning mechanism includes a guide slide arranged on the ear picking frame, a tensioning seat slidably connected to the guide slide, a tensioning screw threaded on the guide slide, a locking nut for limiting the tensioning screw, and a support plate for connecting the tensioning seat and the tensioning screw, and the passive wheel is arranged on the tensioning seat.

[0008] In this embodiment, the driving mechanism includes a driving device and a gear box arranged on the ear picking rack. A mounting seat is arranged on the end of the ear picking rack facing away from the gear box. A guide cone is rotatably connected to the mounting seat. The driving wheel is arranged on the first output shaft of the gear box. The first end of the stem pulling roller is connected to the second output shaft of the gear box, and the second end of the stem pulling roller is connected to the guide cone.

[0009] In this embodiment, the distance L3 between the second end of the stem pulling roller and the center of the passive wheel is ≥300 mm.

[0010] In this embodiment, a cutting knife is arranged on the stem pulling roller, and a grass cutting knife extending toward the stem pulling roller is arranged on the ear picking frame.

[0011] In this embodiment, the inner side wall of the plowing chain is provided with latching teeth adapted to the driving wheel and the driven wheel, and the latching teeth are arranged in two rows at intervals along the extending direction of the width D of the plowing chain.

[0012] In this embodiment, a guide plate for abutting against the latching teeth is arranged on the ear picking frame.

[0013] In this embodiment, the width D of the plowing chain is 50-70 mm; the height h3 of the plowing teeth is 40-60 mm; the height h2 of the latch teeth is 10-20 mm; the thickness h1 of the plowing chain is 7-10 mm; the tip angle α of a single plowing tooth is 12-20°; the cross-section of the latch teeth is trapezoidal; the latch teeth coincide with the center lines of the plowing teeth; the spacing d1 between the roots of two rows of latch teeth is 15-25 mm, and the spacing d2 between the tops of two rows of latch teeth is 17-27 mm.

[0014] According to another aspect of the present invention, a fresh corn harvester is provided, which includes the above-mentioned fresh corn ear picking device.

[0015] The utility model has the following beneficial effects:

[0016] The utility model fresh corn machine ear picking device, two ear picking mechanisms are parallelly arranged with an included angle, since the ear picking channel is narrow in front and wide in back, and the length of the ear picking tooth is fixed, the intersection distance L1 of the ear picking tooth on the two ear picking chains in the front end of the ear picking channel is larger, which makes the stem clamping force of the ear picking chain in the front end increase, and the ear picking tooth can play the role of supporting the ear, which can further reduce the stem falling of the ear picking device, effectively solve the ear clamping phenomenon in the front end, the intersection distance L2 of the ear picking tooth on the two ear picking chains in the rear end of the ear picking channel is smaller, when the ear is more and the high speed is harvested, even if the ear is congested in the rear end of the ear picking channel, the intersection distance of the ear picking tooth is too large to cause the clamping damage to the ear, the ear is pulled down by the stem roller, the protection of the corn ear is better, and the corn fruit is not damaged, thereby avoiding the influence on the performance of fresh corn or seed corn, can improve the quality of product, and improve the production efficiency.

[0017] In addition to the purposes, features and advantages described above, the utility model has other purposes, features and advantages. The utility model will be further explained in detail below with reference to the drawings. ACCURATE DRAWINGS

[0018] The drawings that form a part of this application are intended to provide further understanding of the utility model, and the schematic embodiment of the utility model and its explanation are used to explain the utility model, and do not constitute undue limitation on the utility model. In the drawings:

[0019] Figure 1 It is the structure schematic drawing of the fresh corn machine ear picking device of the preferred embodiment of the utility model;

[0020] Figure 2 It is the top view of the fresh corn machine ear picking device of the preferred embodiment of the utility model;

[0021] Figure 3 It is the bottom view of the fresh corn machine ear picking device of the preferred embodiment of the utility model;

[0022] Figure 4 It is the structure schematic drawing of the ear picking tooth of the preferred embodiment of the utility model;

[0023] Figure 5 It is the schematic diagram of the intersection distance of the ear picking tooth on the two ear picking chains of the preferred embodiment of the utility model;

[0024] Figure 6 It is the structure schematic drawing of the tensioning mechanism of the preferred embodiment of the utility model;

[0025] Figure 7 It is the sectional view of the tensioning mechanism of the preferred embodiment of the utility model;

[0026] Figure 8 It is the structure schematic drawing of the ear picking tooth of the preferred embodiment of the utility model;

[0027] Figure 9 Figure 1 is a structural schematic diagram of the clamping tooth of the preferred embodiment of the present application.

[0028] Legend:

[0029] 1, drive mechanism; 11, gear box; 111, first output shaft; 112, second output shaft; 12, drive device; 2, driving wheel; 3, chain; 31, tine; 32, clamping tooth; 4, guide plate; 5, tensioning mechanism; 51, baffle; 52, bolt; 53, tensioning seat; 531, sliding block; 54, guide sliding seat; 541, sliding rail; 542, fixing bolt; 55, locking nut; 56, tensioning screw; 57, driven wheel; 58, support plate; 59, bearing; 6, ear picking plate; 7, stem pulling roller; 71, cutter; 8, guide cone; 9, ear picking frame; 91, mounting seat; 92, material guide plate; 93, grass cutting knife. DETAILED DESCRIPTION

[0030] The embodiments of the present application are described in detail below with reference to the accompanying drawings, but the present application can be implemented in various different ways as defined and covered below.

[0031] Please see Figures 1 to 9 , the ear picking device of the fresh corn machine of the embodiment, including ear picking frame 9, the driving mechanism 1 and two ear picking mechanisms driven by the driving mechanism 1 are arranged on the ear picking frame 9, the two ear picking mechanisms are arranged side by side at an included angle, the ear picking mechanism includes driving wheel 2 driven by driving mechanism 1, driven wheel 57 rotatably arranged on ear picking frame 9, chain 3 arranged around driving wheel 2 and driven wheel 57, stem pulling roller 7 arranged below chain 3 and driven by driving mechanism 1, and ear picking plate 6 arranged between chain 3 and stem pulling roller 7, ear picking passage is formed between the two ear picking plates 6, the width distance W1 of the inlet end of the ear picking passage is greater than or equal to 25mm, the width W2 of the discharge end of the ear picking passage is greater than or equal to 45mm, the outer side wall of the chain 3 is arranged with tines 31 at intervals, the tines 31 on the two chains 3 are arranged alternately, the cross distance L1 of the tines 31 on the two chains 3 near the inlet end is greater than or equal to 45mm, and the cross distance L2 of the tines 31 on the two chains 3 near the discharge end is greater than or equal to 25mm.

[0032] The two ear picking mechanisms of the fresh corn picking machine are arranged side by side at an angle. Due to the fact that the ear picking channel is narrow at the front and wide at the rear, and the length of the ear picking tooth 31 is fixed, the intersection distance L1 of the ear picking teeth 31 on the two ear picking chains 3 at the front end of the ear picking channel is large, so that the stem clamping force of the ear picking chain 3 at the front end is increased, and the ear picking chain 3 can also play a role in supporting the ear. This can further reduce the pushing down of the stem by the ear picking device, effectively solve the problem of ear clamping at the front end, and improve the quality of the product and the production efficiency.

[0033] As shown in Figure 4 and Figure 8 , in the embodiment, the working distance L0 between the axis of the driving wheel 2 and the axis of the driven wheel 57 is greater than or equal to 1000 mm. Accordingly, the length of the stalk pulling roller 7 is increased, the processing time of the ear picking device on the crops is increased, the congestion of the ear at the rear end of the ear picking channel is avoided, the ear is not damaged by the ear picking chain 3, and the ear picking device can be applied to high-speed harvesting of crops with a large number of ears (high-density planting and high yield of corn).

[0034] As shown in Figure 6 and Figure 7 , in the embodiment, the ear picking mechanism further comprises a tensioning mechanism 5 for tensioning the ear picking chain 3. The tensioning mechanism 5 comprises a guide sliding seat 54 arranged on the ear picking frame 9, a tensioning seat 53 in sliding connection with the guide sliding seat 54, a tensioning screw 56 screwed on the guide sliding seat 54, a locking nut 55 for limiting the tensioning screw 56, and a support plate 58 for connecting the tensioning seat 53 and the tensioning screw 56. The driven wheel 57 is arranged on the tensioning seat 53. The guide sliding seat 54 is installed on the ear picking frame 9 by a fixing bolt 542. The guide sliding seat 54 is provided with a sliding rail 541. The tensioning seat 53 is provided with a sliding block 531 matched with the sliding rail 541. The locking nut 55 is loosened, the tensioning seat 53 is driven to slide on the guide sliding seat 54 by rotating the tensioning screw 56, the tensioning amount is determined, and then the locking nut 55 is tightened to position the tensioning screw 56. Alternatively, a slot matched with the sliding block 531 is formed in the guide sliding seat 54. The sliding block 531 is tightly fitted in the slot to avoid the shaking of the tensioning seat 53. Alternatively, the tensioning seat 53 is provided with a latch 52. The latch 52 is sleeved with a bearing 59. The driven wheel 57 is in rotational connection with the latch 52 through the bearing 59. The latch 52 is provided with a baffle 51 for protecting the driven wheel 57.

[0035] As shown in Figure 2 and Figure 3As shown, in the embodiment, the driving mechanism 1 comprises a driving device 12 and a gear box 11 arranged on the ear picking frame 9, and a mounting seat 91 is arranged on the end of the ear picking frame 9 away from the gear box 11, and a guide cone 8 is rotatably connected to the mounting seat 91. The driving wheel 2 is arranged on the first output shaft 111 of the gear box 11, the first end of the stalk pulling roller 7 is connected to the second output shaft 112 of the gear box 11, and the second end of the stalk pulling roller 7 is connected to the guide cone 8. The mounting seat 91 is fixedly connected to the ear picking frame 9, so that the front and rear ends of the stalk pulling roller 7 are connected to the ear picking frame 9, and the impact resistance during operation of the stalk pulling roller 7 is improved. The guide cone 8 can rotate and work together with the stalk pulling roller 7, and the two guide cones 8 can support the stalk and quickly transport the stalk between the two stalk pulling rollers 7. Optionally, a bearing oil channel is arranged in the guide cone 8 to facilitate lubrication.

[0036] As shown in Figure 3 In the embodiment, a guide plate 92 for guiding the stalk into the ear picking channel is arranged on the end of the mounting seat 91 away from the guide cone 8, and the guide plate 92 can guide the stalk to quickly enter the ear picking channel, thereby improving the harvesting efficiency.

[0037] As shown in Figure 3 In the embodiment, the distance L3 between the second end of the stalk pulling roller 7 and the center of the driven wheel 57 is greater than or equal to 300 mm. By increasing the distance L3 between the second end of the stalk pulling roller 7 and the center of the driven wheel 57, the operation time of the guide cone 8 can be increased, and the adaptability to the harvested crops is good, and the effect on the corn field with deviation in row spacing is particularly prominent.

[0038] When harvesting in a corn field with too many weeds, the weeds with high growth will often be harvested together with the stalk, causing the weeds to wrap around the stalk pulling roller 7 and affect the ear picking, or the cutting knife 71 of the stalk pulling roller 7 is covered by the weeds, the ear cannot be pulled down by the stalk pulling roller 7, and then the ear is blocked in the stalk pulling roller channel. Figure 3 As shown in In the embodiment, a cutting knife 71 is arranged on the stalk pulling roller 7, and a weed cutting knife 93 extending to the stalk pulling roller 7 is arranged on the ear picking frame 9. The weed cutting knife 93 is arranged according to the gap between the rotating contour of the cutting knife 71 on the stalk pulling roller 7 and the ear picking frame 9, so that the weed cutting knife 93 can cut off the weeds attached to the stalk pulling roller 7 when the weeds rotate past, and the weeds on the stalk pulling roller 7 are removed in real time, and the normal operation of the stalk pulling roller is ensured.

[0039] As shown in Figure 4 and Figure 9As shown, in the embodiment, the inner side wall of the chain 3 is provided with the notches 32 adapted to the driving wheel 2 and the driven wheel 57, the notches 32 are arranged in two rows along the extension direction of the width D of the chain 3, the notches 32 are arranged in two rows of trapezoidal teeth in the same width direction of the chain 31, if the upper or lower row of notches 32 is damaged at the same position, the chain 3 can still perform the harvesting operation, which can greatly improve the durability and service life of the chain 3. Alternatively, the chain 3, the tines 31 and the notches 32 are integrally formed and made of rubber or polyurethane, without the need for adding lubricating oil for maintenance, which can significantly reduce the cost and better protect the corn ears, without damaging the fruit flesh, thereby avoiding affecting the performance of fresh corn or seed corn.

[0040] As shown in Figure 1 and Figure 2 As shown in the embodiment, the ear picking frame 9 is provided with the guide plates 4 for abutting against the notches 32; the guide plates 4 are fixed on the ear picking frame 9 by bolts, and two guide plates 4 are arranged on both sides of the ear picking channel, on the one hand, the chain 3 is supported by abutting against the notches 32 to avoid deformation during harvesting, thereby effectively ensuring the working width of the chain 3 in the width D direction, and also avoiding poor engagement of the notches 32 with the driving wheel 2 and the driven wheel 57 and vibration during the harvesting process of the chain 3; on the other hand, by adjusting the position of the guide plates 4 in the direction perpendicular to the ear picking channel, the tensioning adjustment of the chain 3 can also be achieved, the tensioning mechanism 5 and the guide plates 4 are combined to adjust the tensioning degree of the chain 3, which can realize tensioning while the tensioning force is conveniently adjustable.

[0041] As shown in Figure 9 In the embodiment, the width D of the chain 3 is 50-70 mm; as shown in Figure 8 The height h3 of the tine 31 is 40-60 mm; the height h2 of the notch 32 is 10-20 mm; the thickness h1 of the chain 3 is 7-10 mm; as shown in Figure 5 The tip angle α of a single tine 31 is 12-20°; as shown in Figure 8 The cross section of the notch 32 is trapezoidal; the center line of the notch 32 coincides with that of the tine 31; as shown in Figure 9 The spacing d1 between the roots of the two rows of notches 32 is 15-25 mm, and the spacing d2 between the tops of the two rows of notches 32 is 17-27 mm.

[0042] A fresh corn harvester, comprising the above-mentioned fresh corn ear picking device.

[0043] The above merely describes preferred embodiments of the present application and is not intended to limit the present application. For those skilled in the art, the present application can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A fresh corn picker device, characterized in that, it comprises a picker frame (9) on which a driving mechanism (1) and two picker mechanisms driven by the driving mechanism (1) are arranged side by side, the picker mechanism comprises a driving wheel (2) driven by the driving mechanism (1), a driven wheel (57) rotatably arranged on the picker frame (9), a stalk chain (3) arranged around the driving wheel (2) and the driven wheel (57), a stalk pulling roller (7) arranged below the stalk chain (3) and driven by the driving mechanism (1), and a picker plate (6) arranged between the stalk chain (3) and the stalk pulling roller (7), the picker plates (6) form a picker channel between them, the width of the inlet end of the picker channel is W1≥25mm, and the width of the outlet end of the picker channel is W2≥45mm, the outer side wall of the stalk chain (3) is arranged with stalk teeth (31) at intervals, the stalk teeth (31) on the two stalk chains (3) are arranged alternately, the intersection distance of the stalk teeth (31) on the two stalk chains (3) near the inlet end is L1≥45mm, and the intersection distance of the stalk teeth (31) on the two stalk chains (3) near the outlet end is L2≥25mm.

2. The fresh corn picker device according to claim 1, characterized in that, the working distance between the axis of the driving wheel (2) and the axis of the driven wheel (57) is L0≥1000mm.

3. The fresh corn picker device according to claim 1 or 2, characterized in that, the picker mechanism further comprises a tensioning mechanism (5) for tensioning the stalk chain (3), the tensioning mechanism (5) comprises a guide slide (54) arranged on the picker frame (9), a tensioning seat (53) in sliding connection with the guide slide (54), a tensioning screw (56) screwed on the guide slide (54), a locking nut (55) for limiting the tensioning screw (56), and a support plate (58) for connecting the tensioning seat (53) and the tensioning screw (56), and the driven wheel (57) is arranged on the tensioning seat (53).

4. The fresh corn picker device according to claim 3, characterized in that, the driving mechanism (1) comprises a driving device (12) and a gear box (11) arranged on the picker frame (9), an installation seat (91) is arranged on the end of the picker frame (9) away from the gear box (11), and a guide cone (8) is rotatably connected to the installation seat (91), the driving wheel (2) is arranged on the first output shaft (111) of the gear box (11), the first end of the stalk pulling roller (7) is connected with the second output shaft (112) of the gear box (11), and the second end of the stalk pulling roller (7) is connected with the guide cone (8).

5. The fresh corn picker device according to claim 4, characterized in that, the distance between the second end of the stalk pulling roller (7) and the center of the driven wheel (57) is L3≥300mm.

6. The fresh corn picker according to claim 4, characterized in that, a cutter (71) is arranged on the stalk pulling roller (7), and a straw cutting knife (93) extending to the stalk pulling roller (7) is arranged on the ear picking frame (9).

7. The fresh corn picker according to claim 1, characterized in that, a clamping tooth (32) adapted to the driving wheel (2) and the driven wheel (57) is arranged on the inner side wall of the weeding chain (3), and the clamping tooth (32) is arranged in two rows along the extension direction of the width D of the weeding chain (3).

8. The fresh corn picker according to claim 7, characterized in that, a guide plate (4) for abutting against the clamping tooth (32) is arranged on the ear picking frame (9).

9. The fresh corn picker according to claim 7, characterized in that, the width D of the weeding chain (3) is 50-70 mm; the height h3 of the weeding tooth (31) is 40-60 mm; the height h2 of the clamping tooth (32) is 10-20 mm; the thickness h1 of the weeding chain (3) is 7-10 mm; the tip angle a of a single weeding tooth (31) is 12-20°; the cross section of the clamping tooth (32) is trapezoidal; the clamping tooth (32) coincides with the center line of the weeding tooth (31); the spacing d1 between the roots of the two rows of clamping teeth (32) is 15-25 mm, and the spacing d2 between the tops of the two rows of clamping teeth (32) is 17-27 mm.

10. A machine for harvesting fresh corn, characterized in that, The fresh corn picker according to any one of claims 1-9.

Images