Corn ear picking header

Abstract

The invention belongs to the technical field of corn harvesters, and particularly relates to a corn ear picking header. The header comprises a header frame and an ear picking combination, the ear picking combination is installed at the front end of the header frame, and the ear picking combination comprises a plurality of ear picking units connected through double rows of chains; the hobbing cutter assembly is installed at the bottom of the header frame, and the hobbing cutter assembly comprises a speed-increasing transmission box, a movable cutter assembly in transmission connection with an output shaft of the speed-increasing transmission box and a cutter installed on the movable cutter assembly; the speed increasing transmission box comprises a gear shifting rocker arm combination, and the gear shifting rocker arm combination is configured to be capable of controlling starting and stopping of the output shaft. And the hydraulic transmission combination is mounted on the side of the header frame, and the hydraulic transmission combination comprises a hydraulic motor mounted on a motor seat. According to the corn ear picking header, the hydraulic motor is used for transmission, power loss is effectively reduced, transmission efficiency is improved, rapid switching between returning to the field and not returning to the field can be achieved through the gear shifting rocker arm combination, and operation is convenient.

Description

Technical Field

[0001] The invention belongs to the technical field of corn harvesters, and in particular relates to a corn ear removing header. Background Art

[0002] The corn harvesting header is an important component used on a corn combine harvester, which is mainly used to pick corn ears from the straw mountain and transport them to subsequent processing.

[0003] With the development of my country's industrial level, there are more and more types of domestic corn harvesters. With the application and promotion of intelligent control technology, agricultural machinery is also in urgent need of an intelligent integrated corn harvesting and cutting platform. The transmission path of existing corn harvester cutting platforms mostly uses mechanical transmission, such as transmission shaft, belt, sprocket transmission and other traditional methods. Mechanical transmission has large transmission power loss, difficult transmission speed regulation, requires a separate overload protector, is not easy to realize intelligent control, and has the disadvantages of short service life and vibration caused by unstable transmission. Summary of the invention

[0004] The purpose of the present invention is to provide a corn ear picking cutter, which uses a hydraulic motor as the main input. The hydraulic motor can utilize a double sprocket to simultaneously drive the ear picking combination and the roller combination, effectively reducing power loss and improving transmission efficiency. The hydraulic transmission can also achieve overload protection without the need for an additional safety clutch, and is conducive to cooperating with the hydraulic control system for intelligent transmission control, so as to achieve the purpose of optimizing the transmission mode and improving the working reliability of the cutter.

[0005] In order to achieve the above object, the present invention provides a corn ear picking header, which comprises: Cutting frame, An ear picking assembly is installed at the front end of the header frame, and the ear picking assembly includes a plurality of ear picking units connected by double-row chains; A reel cutter assembly is installed at the bottom of the header frame, the reel cutter assembly includes a speed increasing transmission box, a moving cutter assembly drivingly connected to the output shaft of the speed increasing transmission box, and a cutter installed on the moving cutter assembly; the speed increasing transmission box includes a shift rocker arm assembly, and the shift rocker arm assembly is configured to control the start and stop of the output shaft; A hydraulic transmission assembly is installed on the side of the cutting platform frame, and the hydraulic transmission assembly includes a hydraulic motor installed on a motor seat, a double sprocket is installed on the motor seat, and the double sprocket is connected to the driving sprocket of the double-row chain through a first chain; the double sprocket is connected to the input shaft of the speed increasing transmission box through a second chain.

[0006] Optionally, a large gear is installed on the input shaft of the speed-increasing transmission box, and a small gear meshing with the large gear is provided on the output shaft of the speed-increasing transmission box; the output shaft of the speed-increasing transmission box and the small gear are connected through an engagement sleeve, and the engagement sleeve is installed on the shift rocker arm assembly, and rotating the shift rocker arm assembly can separate or engage the small gear and the output shaft.

[0007] Optionally, the motor base comprises: case, A bearing, mounted on the inner side of the housing; The spline shaft is installed in the housing through a bearing, and the spline shaft is connected to the output shaft of the hydraulic motor.

[0008] Optionally, the shell is integrally formed by ductile iron casting.

[0009] Optionally, it further comprises an auger assembly, which is installed inside the cutting table frame; a single sprocket is also installed on the motor seat, and the single sprocket is drivingly connected to the rotating shaft of the auger assembly.

[0010] Optionally, the output shaft of the speed increasing transmission box and the moving knife assembly are connected via a spline transmission.

[0011] Optionally, the ear picking combination further comprises: The front tensioning mechanism is arranged between two adjacent groups of ear picking units; A straw-pulling chain, one end of which is connected to the ear-picking box at the rear side of the ear-picking unit, and the other end of which is connected to the front tensioning mechanism; A tensioning wheel is installed on the inner side of the reed chain to tighten the reed chain.

[0012] Optionally, the reed chain is an elliptical nylon tensioner.

[0013] Optionally, the other side of the movable knife assembly away from the speed increasing transmission box is connected to a fixed assembly for installation, and the fixed assembly is arranged on the cutting platform frame.

[0014] Optionally, a crop dividing cover combination is further included, wherein the crop dividing cover combination includes an integrally formed left crop dividing cover, a right crop dividing cover, and a middle crop dividing cover located between the left crop dividing cover and the right crop dividing cover.

[0015] Compared with the prior art, the present invention has the following beneficial effects: The hydraulic transmission corn ear harvester platform of the present invention uses a hydraulic transmission mode for the main input, and at the same time provides power for the ear picking combination and the hob combination. The transmission structure of the hydraulic transmission is concentrated on the same side of the harvester platform frame, with a compact structure, convenient layout and stable transmission. It can effectively reduce power loss and improve transmission efficiency, and is also convenient for cooperating with the hydraulic control system to achieve the functions of intelligent speed regulation and overload protection. In addition, the hob combination in the present invention is equipped with a speed increasing transmission box that can shift gears. Rotating the shift rocker arm combination can control the rotation and stop of the output shaft of the speed increasing transmission box; during actual operation, it is possible to quickly operate the tillage return or not according to the actual situation by controlling the shift rocker arm combination. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a schematic structural diagram of the corn ear harvester platform in Embodiment 1; Figure 2 is Figure 1 a schematic structural diagram of the middle dividing header cover combination; Figure 3 is Figure 1 a schematic structural diagram of the middle ear picking combination; Figure 4 is Figure 1 a schematic structural diagram of the middle hydraulic transmission combination; Figure 5 is Figure 4 a schematic structural diagram of the motor seat; Figure 6 is Figure 1 a schematic structural diagram of the middle hob combination; Figure 7 is Figure 6 a schematic structural diagram of the speed increasing transmission box; Figure 8 is Figure 5 a schematic structural diagram of the housing; Figure 9 is Figure 7 a schematic structural diagram of the input shaft; Figure 10 is Figure 7 a schematic structural diagram of the engagement sleeve; Figure 11 is Figure 7 a schematic structural diagram of the pinion gear.

[0017] Reference Numerals in the Figures: 1, corn ear picking header; 2, header frame; 3, ear picking assembly; 4, dividing shield assembly; 5, auger assembly; 6, hydraulic drive assembly; 7, hob assembly; 301, left ear picking unit; 302, middle ear picking unit; 303, front tensioning mechanism; 304, double-row chain; 305, reel chain; 306, tensioning wheel; 307, right ear picking unit; 308, ear picking box; 401, left dividing shield; 402, middle dividing shield; 403, right dividing shield; 601, hydraulic motor; 620, motor seat; 603, single sprocket; 604, third chain; 605, double sprocket; 606, second chain; 607, first chain; 621, housing; 622, large bearing; 623, small bearing; 624, spline shaft; 710, speed increasing transmission box; 702, moving cutter assembly; 703, cutting tool; 704, fixing assembly; 711, input shaft; 712, large gear; 713, small gear; 714, output shaft; 715, engaging sleeve; 716, shift rocker arm assembly. Detailed Embodiment

[0018] In the description of the present invention, it should be understood that the orientation or positional relationships indicated by the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. are based on the orientation or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention. In addition, the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first", "second", etc. may explicitly or implicitly include one or more of such features. In the description of the present invention, unless otherwise specified, the meaning of "a plurality" is two or more. In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, the terms "installation", "connection", "connection" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood through specific situations.

[0019] The present invention will be further described below with reference to the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solutions of the present invention and cannot be used to limit the protection scope of the present invention. Embodiment 1

[0020] CombineFigure 1 The present embodiment provides a corn ear picking header 1, which includes a header frame 2, an ear picking assembly 3, a roller assembly 7, a hydraulic transmission assembly 6, an augers assembly 5, and a straw cover assembly 4. The corn ear picking header 1 in the present embodiment is driven by a hydraulic motor 601, which effectively reduces power loss and improves transmission efficiency.

[0021] Combination Figure 2 In some specific embodiments, the crop separation cover assembly 4 includes an integrally formed left crop separation cover 401, a right crop separation cover 403, and a plurality of groups of middle crop separation covers 402 located between the left crop separation cover and the right crop separation cover.

[0022] Combination Figure 3 In some specific embodiments, the ear picking assembly 3 is installed at the front end of the header frame 2, and the ear picking assembly 3 includes a plurality of groups of ear picking units connected by a double-row chain 304. The ear picking combination 3 is composed of a group of left ear picking units 301, two groups of middle ear picking units 302 and a group of right ear picking units 307; the left ear picking unit 301, the middle ear picking unit 302 and the right ear picking unit 307 are connected together by a double-row chain 304, and a single-sided transmission mode is adopted; three groups of front tensioning mechanisms 303 are installed in the middle of the two groups of ear picking units; one end of a plurality of grain-pulling chains 305 is connected to the ear-pulling box 308 on the rear side of the ear-pulling unit, and the other end is connected to the front tensioning mechanism 303; in a specific embodiment, there are eight grain-pulling chains 305 as shown in the accompanying drawings, and an elliptical nylon tensioning wheel 306 is installed on the inner side of each grain-pulling chain 305 to play a tensioning role and prevent chain jumping; the grain-pulling chain 305 of the ear-pulling unit adopts an elliptical nylon tensioning wheel 306, which has good wear resistance and prevents chain adjustment. The ear picking assembly 3 in this embodiment adopts a double-row chain connection transmission, with a simple transmission structure, low installation coaxiality requirements, and high installation efficiency; and the ear picking assembly 3 adopts a single-sided transmission mode, with a simple transmission structure and space saving.

[0023] Combination Figure 6 In some specific embodiments, the cutter assembly 7 is installed at the bottom of the header frame 2, and the cutter assembly 7 includes a speed increasing transmission box 710, a moving cutter assembly 702 connected to the output shaft 714 of the speed increasing transmission box 710, and a cutter 703 installed on the moving cutter assembly 702; the output shaft of the speed increasing transmission box 710 and the moving cutter assembly 702 are connected via a spline transmission. The other side of the moving cutter assembly 702 away from the speed increasing transmission box 710 is connected to a fixed assembly 704 for installation, and the fixed assembly 704 is arranged on the header frame 2; in a specific embodiment, the cutter assembly 7 is equipped with 3 groups of cutters 703, with good dynamic balancing effect and significant crushing effect.

[0024] Combination Figure 7 as well asFigures 9 - 11 , specifically, the hob combination 7 includes a speed-increasing transmission case 710 with shift gears. The speed-increasing transmission case 710 is in transmission connection with the moving cutter combination 702 through splines. The speed-increasing transmission case 710 includes an input shaft 711, a large gear 712 mounted on the input shaft 711, and a small gear 713 meshing with the large gear 712. The small gear 713 is mounted on an output shaft 714 through a needle bearing. The output shaft 714 and the small gear 713 are connected together through an engaging sleeve 715 that can move left and right. The engaging sleeve 715 is mounted on a shift rocker arm combination 716. Rotating the shift rocker arm combination 716 can disengage and engage the small gear 713 from and with the output shaft 714. The hob combination 7 in this embodiment is configured with a speed-increasing transmission case 710 with shift gears, and the speed-increasing transmission case 710 is configured with a shift rocker arm combination 716 that can control the rotation and stop of the output shaft 714. During actual operation, the user can quickly operate the shift rocker arm combination 716 according to the actual situation to select whether to return the field or not.

[0025] Combined with Figure 4 , in some specific embodiments, the hydraulic transmission combination 6 is mounted on the side of the cutter bar frame 2. The hydraulic transmission combination 6 includes a hydraulic motor 601 mounted on a motor seat 620. A double sprocket 605 is mounted on the motor seat 620. The double sprocket 605 is in transmission connection with the driving sprocket of the double-row chain 304 through a first chain 607. The double sprocket 605 is in transmission connection with the input shaft 711 of the speed-increasing transmission case 710 through a second chain 606. Combined with Figure 5 and Figure 8 , the motor seat 620 in this embodiment adopts through-shaft direct drive, and the transmission structure is simple. The spline shaft 604 adopts direct spline connection, and the transmission efficiency is high. In a specific embodiment, the motor seat 620 includes a housing 621, bearings installed inside the housing 621, and a spline shaft 624 installed in the housing 621 through the bearings. The housing 621 is integrally formed by nodular iron casting. The bearings include a large bearing 622 and a small bearing 623. The spline shaft 624 is connected to the output shaft of the hydraulic motor 601. Using the hydraulic motor 601 for transmission in this embodiment can effectively reduce power loss and has high transmission efficiency. In addition, the corn picker cutter bar 1 in this embodiment uses the hydraulic motor 601 for transmission, does not require additional arrangement of a safety clutch, has a simple transmission structure, is convenient for maintenance, and can also provide a stable and reliable structural basis for the subsequent intelligent control system. Embodiment 2

[0026] The present embodiment is the same as the embodiment 1, but the difference between the present embodiment and the embodiment 1 is that the auger assembly 5 is installed inside the cutting table frame 2; a single sprocket 603 is also installed on the motor seat 620, and the single sprocket 603 is connected to the rotating shaft of the auger assembly 5 through a third chain 604. The transmission structure of the hydraulic transmission in the present embodiment is concentrated on the same side of the cutting table frame 2, which has a compact structure, is easy to arrange, has stable transmission, can effectively reduce power loss, and has high transmission efficiency.

[0027] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A corn ear picking header, characterized in that: include: Header frame (2), An ear picking assembly (3) is mounted on the front end of the header frame (2), wherein the ear picking assembly (3) comprises a plurality of groups of ear picking units connected by a double-row chain (304); A roller cutter assembly (7) is mounted on the bottom of the cutting platform frame (2), the roller cutter assembly (7) comprising a speed increasing transmission box (710), a moving cutter assembly (702) drivingly connected to an output shaft (714) of the speed increasing transmission box (710), and a cutter (703) mounted on the moving cutter assembly (702); the speed increasing transmission box (710) comprises a shift rocker arm assembly (716), and the shift rocker arm assembly (716) is configured to control the start and stop of the output shaft (714); A hydraulic transmission assembly (6) is installed on the side of the cutting platform frame (2), and the hydraulic transmission assembly (6) includes a hydraulic motor (601) installed on a motor seat (620). A double sprocket (605) is installed on the motor seat (620). The double sprocket (605) is connected to the driving sprocket of the double-row chain (304) through a first chain (607); the double sprocket (605) is connected to the input shaft (711) of the speed increasing transmission box (710) through a second chain (606).

2. The corn ear removing header according to claim 1, characterized in that: A large gear (712) is mounted on the input shaft (711) of the speed-increasing transmission box (710), and a small gear (713) meshing with the large gear (712) is mounted on the output shaft (714) of the speed-increasing transmission box (710); the output shaft (714) of the speed-increasing transmission box (710) and the small gear (713) are connected via an engagement sleeve (715), and the engagement sleeve (715) is mounted on the shift rocker arm assembly (716); rotating the shift rocker arm assembly (716) can cause the small gear (713) and the output shaft (714) to separate or mesh.

3. The corn ear removing header according to claim 1, characterized in that: The motor base (620) comprises: Housing (621), A bearing, mounted on the inner side of the housing (621); A spline shaft (624) is installed in the housing (621) via a bearing, and the spline shaft (624) is connected to an output shaft of the hydraulic motor (601).

4. The corn ear removing header according to claim 3, characterized in that: The housing (621) is integrally formed by casting of ductile iron.

5. The corn ear removing header according to claim 1, characterized in that: It also includes an augers assembly (5), the augers assembly (5) being installed inside the header frame (2); a single sprocket (603) is also installed on the motor seat (620), the single sprocket (603) being drivingly connected to the rotating shaft of the augers assembly (5).

6. The corn ear removing header according to claim 1, characterized in that: The output shaft (714) of the speed increasing transmission box (710) and the movable knife assembly (702) are connected via a spline transmission.

7. The corn ear removing header according to claim 1, characterized in that: The ear picking assembly (3) further comprises: A front tensioning mechanism (303) is provided between two adjacent groups of ear picking units; A straw-pulling chain (305), one end of which is connected to an ear-picking box (308) at the rear side of the ear-picking unit, and the other end of which is connected to the front tensioning mechanism (303); A tensioning wheel (306) is installed inside the reed chain (305) to tighten the reed chain (305).

8. The corn ear removing header according to claim 7, characterized in that: The reed chain (305) is an elliptical nylon tensioner.

9. The corn ear removing header according to claim 1, characterized in that: The other side of the moving blade assembly (702) away from the speed increasing transmission box (710) is connected to a fixed assembly (704) for installation, and the fixed assembly (704) is arranged on the cutting platform frame (2).

10. The corn ear removing header according to claim 1, characterized in that: It also comprises a crop-dividing cover assembly (4), wherein the crop-dividing cover assembly (4) comprises an integrally formed left crop-dividing cover (401), a right crop-dividing cover (403), and a middle crop-dividing cover (402) located between the left crop-dividing cover (401) and the right crop-dividing cover (403).

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