A corn harvester based on adjustable gap between stalk pulling rollers

Abstract

The invention discloses a corn harvester based on adjustable gap between stem pulling rollers, comprising: a frame; a suspension support frame; an auger; a peeling mechanism; an ear box, which is arranged at the other end of the frame; at least one stem pulling roller mechanism; at least two gap adjustment devices, which are matched and arranged on the stem pulling roller mechanism, including: a tensioning clamp, which is an open-loop structure; a bearing, which is supported and arranged on the inner circumference of the tensioning clamp; a first support pin mechanism and a second support pin mechanism, one end of which is respectively fixedly connected to the two ends of the tensioning clamp; an elastic support frame, which is coaxially arranged outside the tensioning clamp, and the two ends of the elastic support frame are respectively connected to the other ends of the first support pin mechanism and the second support pin mechanism; a hydraulic drive mechanism, which is arranged on the second support pin mechanism, and the output end of the hydraulic drive mechanism is connected to the other end of the second support pin mechanism. The gap between adjacent stem pulling rollers can be changed to improve the efficiency of corn ear picking.

Description

Technical Field

[0001] The invention relates to a corn harvester based on an adjustable gap between stem pulling rollers, belonging to the field of corn harvesting devices. Background Art

[0002] Corn originated in America and is currently one of the most widely planted food crops in the world. Its planting area and total output are second only to rice, and it is the cereal crop with the highest average yield. Corn is my country's largest food crop. From the perspective of usage, with the rapid development of social economy, people's living standards continue to improve and dietary structure continues to improve, the proportion of corn directly used for food has gradually decreased. Corn kernels contain a large amount of starch, protein, carbohydrates, vitamins and various minerals, making corn more and more widely used. With the advancement of science and technology and the development of new products, the proportion of deep processing of corn continues to increase. Corn has become a multi-purpose crop that is of great significance to farmers' income, agriculture, related industries and even the development of the national economy.

[0003] my country's corn-growing area is vast, and there are great differences in soil conditions, farming systems, cultivation characteristics, etc. in various regions. Therefore, my country is mainly composed of six major corn producing areas, namely: the northern spring-sown corn area, the Huanghuai Plain spring-summer-sown corn area, the southwestern mountainous and hilly corn area, the southern hilly corn area, the northwestern inland corn area and the Qinghai-Tibet Plateau corn area.

[0004] Corn harvesting is the most arduous link in corn production. In order to ensure the security of my country's grain production, the use of mechanized corn harvesting has the advantages of improving corn production efficiency, reducing operation time, lowering corn production costs, and increasing farmers' production and income.

[0005] The ear-picking header is a key working part of the corn harvester. The working performance of the ear-picking header directly affects the working quality of the corn harvester. The ear-picking header can pick off corn ears with different corn stalk diameters and different ear-bearing heights. Due to different regions and different planting methods, it is difficult for one machine to meet different harvesting needs. It is impossible to adjust the spacing between the stalk-pulling rollers according to the actual situation, which greatly reduces the working efficiency. Summary of the invention

[0006] The present invention designs and develops a corn harvester based on an adjustable gap between stalk pulling rollers. Through the cooperation of a hydraulic drive mechanism and a tensioning clamp, the bearing drives the stalk pulling rollers to move, thereby changing the gap between adjacent stalk pulling rollers, preventing the ear picking platform from being blocked by corn stalks and corn ears, and improving the efficiency of corn ear picking.

[0007] The technical solution provided by the present invention is:

[0008] A corn harvester based on adjustable gap between stalk pulling rollers, comprising:

[0009] Frame;

[0010] A suspension support frame, which is hinged to one end of the frame;

[0011] An auger, which is hinged on the suspension frame;

[0012] a peeling mechanism, which is hinged on the auger;

[0013] At least two groups of ear picking headers, which are hingedly arranged on the peeling mechanism and located at one end of the corn harvester;

[0014] An elevator, one end of which is connected to the auger;

[0015] An ear box is arranged on the frame and located at the other end of the corn harvester, and the other end of the elevator is located above the ear box;

[0016] At least two stem pulling roller mechanisms are arranged at the lower part of the ear picking header;

[0017] At least four gap adjustment devices are matched and arranged on the stem pulling roller mechanism, including:

[0018] A tensioning clamp, which is an open-loop structure;

[0019] A bearing, the bearing being supported and arranged on the inner periphery of the tensioning clamp;

[0020] A first supporting pin mechanism and a second supporting pin mechanism, one end of which is fixedly connected to two ends of the tensioning clamp respectively;

[0021] An elastic support frame, which is coaxially arranged outside the tensioning clamp, and two ends of the elastic support frame are respectively connected to the other ends of the first support pin mechanism and the second support pin mechanism;

[0022] A hydraulic drive mechanism is arranged on the second support pin mechanism, and an output end of the hydraulic drive mechanism is connected to the other end of the second support pin mechanism.

[0023] Preferably, the stem pulling roller mechanism comprises:

[0024] Stem pulling roller drive motor;

[0025] Two stem pulling rollers, one end of which is respectively connected to the output end of the stem pulling roller driving motor;

[0026] Two blades, which are respectively arranged on one side of the stem pulling roller;

[0027] Two introduction cones are respectively arranged at the other end of the stem pulling roller.

[0028] Preferably, the bearing is arranged at the connection between the stem pulling roller and the introduction cone.

[0029] Preferably, two ends of the tensioning clamp extend outwards to form a first connecting portion and a second connecting portion, respectively, and two ends of the elastic support frame extend outwards to form a third connecting portion and a fourth connecting portion, respectively.

[0030] Preferably, the first support pin mechanism comprises:

[0031] A first supporting pin, one end of which is fixedly connected to the first connecting portion, and the other end of which passes through and is fixed to the third connecting portion;

[0032] A first coil spring is arranged on the first supporting pin and is located between the first connecting portion and the second connecting portion, wherein one end of the first coil spring abuts against the first connecting portion and the other end abuts against the third connecting portion.

[0033] Preferably, the second support pin mechanism comprises:

[0034] A second supporting pin, one end of which is fixedly connected to the second extension portion;

[0035] A second coil spring is arranged on the second supporting pin and is located between the second extending portion and the fourth connecting portion, wherein one end of the second coil spring abuts against the second connecting portion and the other end abuts against the fourth connecting portion.

[0036] Preferably, the hydraulic drive mechanism comprises:

[0037] a hydraulic cylinder, which is arranged on the fourth connecting portion, and hydraulic oil is arranged in the hydraulic cylinder;

[0038] a piston disposed in the hydraulic cylinder;

[0039] A piston rod, which is disposed in the hydraulic cylinder and connected to one end of the piston;

[0040] A return spring is arranged outside the piston rod.

[0041] Preferably, the other end of the second support pin passes through the fourth connecting portion and the hydraulic cylinder and is connected to the other end of the piston.

[0042] The beneficial effects described in the present invention: The corn harvester based on the adjustable gap between the stem pulling rollers provided by the present invention, through the cooperation of the hydraulic drive mechanism and the tensioning clamp, enables the bearing to drive the stem pulling roller to move, changes the gap between adjacent stem pulling rollers, prevents the ear picking platform from being blocked by corn stalks and corn ears, improves the efficiency of corn ear picking, and enables the device to be used in different varieties and different regions, expanding the scope of application. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] Figure 1 It is a schematic structural diagram of the corn harvester based on the adjustable gap between the stalk pulling rollers according to the present invention.

[0044] Figure 2 The present invention is a schematic structural diagram of the ear-removing header.

[0045] Figure 3 It is a structural schematic diagram of the stem pulling roller mechanism described in the present invention.

[0046] Figure 4 It is a schematic structural diagram of the gap adjustment device described in the present invention.

[0047] Figure 5 It is a cross-sectional view of the gap adjustment device described in the present invention. DETAILED DESCRIPTION

[0048] The present invention is further described in detail below in conjunction with the accompanying drawings so that those skilled in the art can implement the invention with reference to the description.

[0049] like Figure 1-5 As shown, the present invention provides a corn harvester based on an adjustable gap between stalk pulling rollers, comprising: a frame 101, a transmission device 102, a walking wheel system 103, a suspension support frame 104, an augers 105, a grain recovery box 106, an ear picking and cutting platform 107, a peeling mechanism 108, an ear pressing device 109, a cab 110, an elevator 111, an ear box 112, a stalk returning device 113, a chain power transmission system 114, a cutting platform frame 1071, a stalk pulling roller driving motor Machine 201, stem pulling roller 202, first stem pulling roller 202a, second stem pulling roller 202b, blade 203, first support frame 204a, second support frame 204b, first introduction cone 205a, second introduction cone 205b, tensioning clamp 310, elastic support frame 320, hydraulic cylinder 320a, piston 320b, second support pin 320c, second coil spring 320e, first coil spring 320f, first support pin 320d, bearing 400.

[0050] like Figure 1As shown, the corn harvester based on the adjustable gap between the stem pulling rollers includes: a frame 101, one end of the suspension support frame is hinged 104 at one end of the frame 101, a fruit ear box 112 is arranged at the other end of the frame 101, a chain transmission system 114 is arranged below the frame, a transmission device 102 is arranged on the frame and located at one end of the fruit ear box 112, an augers 105 is arranged on the suspension support frame 104, one end of the grain recovery box 106 is hinged to the other end of the suspension support frame, and an ear picking header 107 is hinged to the grain recovery box 106. At the other end of the collection box 106, a peeling mechanism 108 is arranged on the grain recovery box 106, and a fruit ear press 109 is arranged on the peeling mechanism 108. One end of the elevator 111 is connected to the auger 105, and the other end is arranged above the fruit ear box 112. At the bottom of the frame 101, a walking wheel system 103 is also arranged. At the bottom of the frame 101, a stem returning device and a transmission device are also arranged, wherein the ear picking table 107, the peeling mechanism 108 and the fruit ear press 109 are all independently driven and operated by motors.

[0051] like Figure 2 and 3 As shown, the corn harvester is provided with at least one group of ear picking cutting platforms 107, each group of ear picking cutting platforms 107 is provided with a stem pulling roller mechanism, a cutting platform frame 1071 is provided on the ear picking cutting platform 107, the stem pulling roller mechanism is fixedly arranged on the cutting platform frame 1071, each stem pulling roller mechanism comprises: a stem pulling roller driving motor 201, a first stem pulling roller 202a, and a second stem pulling roller 202b, the stem pulling roller driving motor 201 drives the first stem pulling roller 202a and the second stem pulling roller 202b to rotate relative to each other through a bevel gear mechanism, a first support frame 204a and a second support frame 204b are respectively arranged on the first stem pulling roller 202a and the second stem pulling roller 202b, and are used for being suspended and fixed with the cutting platform frame 1071, a blade 203 is respectively arranged on one side of the first stem pulling roller 202a and the second stem pulling roller 202b, and a first introduction cone 205a and a second introduction cone 205b are respectively arranged at one end of the first stem pulling roller 202a and the second stem pulling roller 202b.

[0052] A gap adjustment device is provided at the connection between the first stem pulling roller 202a and the first introduction cone 205a, and at the connection between the second stem pulling roller 202b and the second introduction cone 205b, respectively. The gap adjustment device is provided on the first stem pulling roller 202a and the second stem pulling roller 202b through the bearing 400.

[0053] like Figure 4 and 5As shown, on the gap adjustment device, the tensioning clamp 310 is an open-loop structure, the outer ring of the bearing 400 is supported and arranged on the inner circumference of the tensioning clamp 310, and the inner ring of the bearing 400 is arranged at the connection between the stem pulling roller and the introduction cone. One end of the first support pin mechanism and the second support pin mechanism are respectively fixedly connected to the two ends of the tensioning clamp 310, the elastic support frame 320 is coaxially arranged outside the tensioning clamp 310, and the two ends of the elastic support frame 320 are respectively connected to the other ends of the first support pin mechanism and the second support pin mechanism, and the hydraulic drive mechanism is arranged on the second support pin mechanism, and the output end of the hydraulic drive mechanism is connected to the other end of the second support mechanism.

[0054] The two ends of the tensioning clamp 310 extend outwards respectively to form a first connecting part and a second connecting part, and the two ends of the elastic support frame 320 extend outwards respectively to form a third connecting part and a fourth connecting part. The first support pin mechanism includes: a first support pin 320d and a first coil spring 320f. One end of the first support pin 320d is fixedly connected to the first connecting part at one end of the tensioning clamp 310, and the other end passes through and is fixed to the third connecting part at one end of the elastic support frame 320. The first coil spring 320f is arranged on the first support pin 320d and is located between the first connecting part and the second connecting part. One end of the first coil spring 120f abuts against the first connecting part, and the other end abuts against the second connecting part. The second support pin mechanism includes: a second support pin 320c and a second coil spring 320e. One end of the second support pin 320c is fixedly connected to the second connecting part at the other end of the tensioning clamp 310, and the other end passes through the fourth connecting part and is connected to the output end of the piston mechanism. The second coil spring 320e is arranged on the second support pin 320c and is located between the second connecting part and the fourth connecting part. One end of the second coil spring 320e abuts against the second connecting part, and the other end abuts against the fourth connecting part.

[0055] The hydraulic drive mechanism includes: a hydraulic cylinder 320a, a piston 320b, a piston rod and a return spring. The hydraulic cylinder 320a is arranged on the fourth connecting part. Hydraulic oil is arranged in the hydraulic cylinder 320a. The piston 320b is arranged in the hydraulic cylinder. The piston rod is arranged in the hydraulic cylinder and connected to one end of the piston 320b. The piston rod is connected to the other end of the second support pin 320c. The return spring is arranged on the outside of the piston rod.

[0056] When working, the automatic gap adjustment device is supported at the transition connection between the stem pulling roller and the guide cone through the bearing 400, and the two automatic gap adjustment devices are respectively arranged on the first stem pulling roller 202a and the second stem pulling roller 202b; the tensioning clamp 110 is arranged in an open-loop type, and its two ends are respectively fixedly connected to the first support pin 320c and the second support pin 320d, and are pre-tightened and supported by the first coil spring 320e and the second coil spring 320f. Under the action of the hydraulic system, the hydraulic cylinder 320a and the piston 320b arranged at the other end of the second support pin 320c increase the oil pressure in the hydraulic cylinder 320a, and the oil drives the piston mechanism 320b to move to one side, and then pushes the tensioning clamp 310 to deviate from one side to the other side through the support pin 320c and the coil spring 320e. As the tensioning clamp 310 deviates and presses to the other side, one end of the tensioning clamp 310 supports and pushes the first support pin 320d and the first coil spring 320f to press against the elastic support frame 320, and the first support pin 320d can move axially along the pin hole direction. The bearing 400 arranged on the inner circumference of the tensioning clamp 310 also deviates to the other side along with the tensioning clamp 310, thereby driving one end of the first stem pulling roller 202a and the second stem pulling roller 202b supported on the bearing 400 to deviate to the inner side of the two stem pulling rollers. At this time, the first stem pulling roller 202a and the second stem pulling roller 202b deviate to the inner side at the same time, so that the gap between the two stem pulling rollers becomes smaller. On the contrary, when the oil pressure in the hydraulic cylinder 320a decreases, the second support pin 320c moves outward under the action of the spring tension force, and one end of the stem pulling roller 316 deviates to the other side along with the tensioning clamp 310, and at this time, the gap between the first stem pulling roller 202a and the second stem pulling roller 202b becomes larger. By changing the gap between one end of the first stem pulling roller 202a and the second stem pulling roller 202b, the opening between the first stem pulling roller 202a and the second stem pulling roller 202b is enlarged, which can effectively reduce the blockage of corn stalks and ears.

[0057] The applications listed in the specification and implementation examples can be fully applied to various fields suitable for the present invention. For those familiar with the art, additional modifications can be easily implemented. Therefore, without departing from the general concept defined by the claims and the scope of equivalents, the present invention is not limited to the specific details and the illustrations shown and described herein.

Claims

1. A corn harvester based on adjustable gap between stalk pulling rollers, characterized in that: include: Frame; A suspension support frame, which is hinged to one end of the frame; A auger, which is arranged on the suspension support frame; a peeling mechanism, which is hinged to the auger; An ear picking header, which is hingedly arranged on the peeling mechanism and located at one end of the corn harvester; An elevator, one end of which is connected to the auger; A fruit ear box is arranged at the other end of the frame, and the other end of the elevator is located above the fruit ear box; At least one stem pulling roller mechanism, which is arranged at the lower part of the ear picking header; At least two gap adjustment devices are matched and arranged on the stem pulling roller mechanism, including: A tensioning clamp, which is an open-loop structure; A bearing, the bearing being supported and arranged on the inner periphery of the tensioning clamp; A first supporting pin mechanism and a second supporting pin mechanism, one end of which is fixedly connected to two ends of the tensioning clamp respectively; An elastic support frame, which is coaxially arranged outside the tensioning clamp, and two ends of the elastic support frame are respectively connected to the other ends of the first support pin mechanism and the second support pin mechanism; A hydraulic drive mechanism is arranged on the second support pin mechanism, and an output end of the hydraulic drive mechanism is connected to the other end of the second support pin mechanism.

2. The corn harvester based on adjustable gap between stalk pulling rollers according to claim 1 is characterized in that: The stem pulling roller mechanism comprises: Stem pulling roller drive motor; Two stem pulling rollers, one end of which is respectively connected to the output end of the stem pulling roller driving motor; Two blades, which are respectively arranged on one side of the stem pulling roller; Two introduction cones are respectively arranged at the other end of the stem pulling roller.

3. The corn harvester based on adjustable gap between stalk pulling rollers according to claim 2 is characterized in that: The bearing is arranged at the connection between the stem pulling roller and the introduction cone.

4. The corn harvester based on adjustable gap between stalk pulling rollers according to claim 3 is characterized in that: The two ends of the tensioning clamp extend outwards to form a first connecting portion and a second connecting portion, respectively. The two ends of the elastic support frame extend outwards to form a third connecting portion and a fourth connecting portion, respectively.

5. The corn harvester based on adjustable gap between stalk pulling rollers according to claim 4 is characterized in that: The first support pin mechanism comprises: A first supporting pin, one end of which is fixedly connected to the first connecting portion, and the other end of which passes through and is fixed to the third connecting portion; The first coil spring is arranged on the first supporting pin and is located between the first connecting portion and the third connecting portion. One end of the first coil spring abuts against the first connecting portion, and the other end abuts against the third connecting portion.

6. The corn harvester based on adjustable gap between stalk pulling rollers according to claim 5, characterized in that: The second support pin mechanism comprises: A second supporting pin, one end of which is fixedly connected to the second connecting portion; The second coil spring is arranged on the second supporting pin and is located between the second connecting portion and the fourth connecting portion. One end of the second coil spring abuts against the second connecting portion, and the other end abuts against the fourth connecting portion.

7. The corn harvester based on adjustable gap between stalk pulling rollers according to claim 6, characterized in that: The hydraulic drive mechanism comprises: a hydraulic cylinder, which is arranged on the fourth connecting portion, and hydraulic oil is arranged in the hydraulic cylinder; a piston disposed in the hydraulic cylinder; A piston rod, which is disposed in the hydraulic cylinder and connected to one end of the piston; A return spring is arranged outside the piston rod.

8. The corn harvester based on adjustable gap between stalk pulling rollers according to claim 7, characterized in that: The other end of the second supporting pin passes through the fourth connecting portion and the hydraulic cylinder and is connected to the other end of the piston.

Images