A cutterbar assembly and harvester

Abstract

The utility model provides a kind of cutter assembly, for cutting machine header cutting crop straw, including with the drive assembly of fixed connection of header frame, with the cutter assembly of drive assembly transmission connection, drive assembly drives cutter assembly cutting crop straw;Cutter assembly includes sword beam, sword bar, blade group, tool bit and blade guard group, blade group includes the first blade of being fixed on sword bar, second blade, the blade face of first blade and second blade is reversely arranged and located on the same plane;Blade guard group includes the first blade guard of being fixed on sword beam and second blade guard, first blade guard includes the first sword groove for setting the first blade, second blade guard includes the second sword groove for setting second blade.The utility model provides a kind of cutter assembly, can solve the problem of blade damage caused by high vibration frequency of cutter, high vibration frequency of header, product service life is long, can guarantee the reliability of harvester.

Description

Technical Field

[0001] This utility model relates to the field of agricultural machinery, and in particular to a cutter assembly and a harvester. Background Technology

[0002] During harvesting, the cutter blades positioned at the front of the header cut the straw. Due to the varying thickness of the straw, the blades are prone to bending and breaking during their lateral reciprocating motion. Furthermore, the relatively long length and high oscillation frequency of the blades cause header resonance, affecting the harvester's operational safety and lifespan. Current technologies typically employ moving and fixed blades in the cutter blade configuration. The moving blade, during its lateral reciprocating motion along the header, forms a scissor-like structure with the fixed blade to cut the straw. However, this design makes it difficult to install blade guards, leading to blade damage during harvesting and consequently affecting the straw cutting effect. Moreover, the header resonance problem remains unresolved. Therefore, it is necessary to provide a cutter assembly that overcomes the aforementioned shortcomings. Utility Model Content

[0003] The purpose of this invention is to provide a cutter assembly and harvester to solve the problems of blade damage and high header vibration frequency caused by high cutter vibration frequency.

[0004] According to one aspect of the present invention, a cutter assembly is provided for cutting crop straw on the header of a harvester, comprising a drive assembly fixedly connected to the header frame and a cutter assembly pulverizedly connected to the drive assembly, wherein the drive assembly drives the cutter assembly to cut crop straw in the width direction of the header.

[0005] The cutting tool assembly includes:

[0006] A blade beam, which is arranged along the width direction of the cutting table and fixed on the cutting table frame;

[0007] A cutter bar, which is fixed to the cutter beam along the width direction of the cutting table;

[0008] The blade assembly includes a first blade and a second blade fixed to the blade holder. The cutting edges of the first blade and the second blade are arranged oppositely and located on the same plane. The backs of the first blade and the second blade are located on the same straight line.

[0009] The cutter head connects the cutter bar to the drive assembly, driving the blade assembly to move laterally and reciprocally to cut crop straw;

[0010] The blade guard assembly includes a first blade guard and a second blade guard fixed to the blade beam. The first blade guard includes a first groove for setting the first blade, and the second blade guard includes a second groove for setting the second blade.

[0011] By changing the arrangement of the blade assembly, the cutting surfaces of the first and second blades are arranged oppositely and located on the same plane. The guard assembly protects the first and second blades to increase the structural strength of the blade assembly. At the same time, the backs of the first and second blades are arranged on the same straight line to improve the straightness of the blade assembly and reduce the vibration frequency of the blade assembly.

[0012] Preferably, the cutter head includes a first drive plate and a second drive plate arranged vertically, the first drive plate and the second drive plate being connected to the cutter bar and the drive assembly, driving the cutter to reciprocate.

[0013] Preferably, the first blade guard and the second blade guard are integrally formed and the first blade groove and the second blade groove are located on the same plane.

[0014] Preferably, the cutter head further includes a cutter holder, which is connected to the drive assembly.

[0015] Preferably, the drive assembly includes a swing ring box, which is connected to the cutter holder. The swing ring box is eccentrically driven to realize the lateral reciprocating motion of the cutter assembly.

[0016] Preferably, the swing ring box includes a housing, the housing including an input shaft parallel to the cutter beam, a rotor vertically arranged and driven by the input shaft, a planetary gear driven by the rotor, an output shaft seat driven by the planetary gear and rotating synchronously, and a transmission bearing disposed on the output shaft seat. The transmission bearing connects to the cutter holder and drives the cutter holder to rotate synchronously. A first bevel gear is sleeved on the input shaft, a second bevel gear meshing with the first bevel gear is sleeved on the rotor, the rotor has a transmission cavity, the planetary gear is disposed in the transmission cavity, the output shaft seat provides power to the cutter assembly, and a bearing assembly is sleeved on the rotor, the bearing assembly being driven by the planetary gear.

[0017] Preferably, the bearing assembly includes a first bearing disposed on top, a second bearing disposed below the first bearing, and a third bearing for maintaining the stable rotation of the first bearing and the second bearing, wherein the internal gear ring of the first bearing meshes with the planetary gear; the third bearing is sleeved on the second bevel gear to fix the second bevel gear and the rotor.

[0018] Preferably, when the output shaft seat is connected to the planetary gear transmission, a connecting bearing is also provided in the transmission cavity, and the connecting bearing is sleeved on the planetary gear and the output shaft seat.

[0019] Preferably, the output shaft seat includes an upper output seat and a lower output seat, the upper output seat includes a first connecting boss, and the lower output seat includes a second connecting boss, the first connecting boss and the second connecting boss being fixedly connected.

[0020] Preferably, the lower output seat includes a cam shaft, which is connected to a transmission bearing. The transmission bearing provides transmission power to the cutter head, and the cam shaft drives the cutter assembly to rotate eccentrically.

[0021] The power is reversed through the swing ring box, and the power is supplied to the cutter head through the cam shaft set on the output shaft seat and the transmission bearing. This increases the reliability of the power connection between the swing ring box and the cutter assembly and reduces the vibration frequency of the cutter assembly.

[0022] The embodiments also provide a harvester including the cutter assembly described in any of the above embodiments.

[0023] The cutting blade assembly provided by this utility model has the advantages of excellent cutting effect, stable output, and high reliability, and can avoid the occurrence of cutting blade breakage. Attached Figure Description

[0024] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments:

[0025] Figure 1 This is a schematic diagram of a cutting tool assembly provided by the present invention.

[0026] Figure 2 A schematic diagram of a cutting tool assembly provided by this utility model Figure 1 .

[0027] Figure 3 A schematic diagram of a cutting tool assembly provided by this utility model Figure 2 .

[0028] Figure 4 A schematic diagram of a cutting tool assembly provided by this utility model Figure 3 .

[0029] Figure 5 A schematic diagram of a swing ring box structure provided by this utility model Figure 1 .

[0030] Figure 6 Right view of a swing ring box provided by this utility model.

[0031] Figure 7 Figure 6A cross-sectional view along the A-A1 direction.

[0032] Figure 8a A schematic diagram of an output shaft seat structure provided by this utility model Figure 1 .

[0033] Figure 8b A schematic diagram of an output shaft seat structure provided by this utility model Figure 2 .

[0034] Explanation of icon numbers:

[0035] 100-Cutter assembly; 1-Drive assembly; 10-Swing ring box; 101-Box body; 102-Input shaft; 103-Rotor; 1031-Transmission cavity; 104-Planet gear; 105-Output shaft seat; 1051-Upper output seat; 1051a-First connecting boss; 1052-Lower output seat; 1052a-Second connecting boss; 1052b-Pan shaft; 106-Transmission bearing; 107-First bevel gear; 108-Second bevel gear; 109-Bearing assembly; 1091-First bearing; 1092-Second bearing; 1093-Third bearing; 110-Connecting bearing; 2-Cutter assembly; 21-Cutter beam; 22-Cutter shank; 23-Insert blade assembly; 231-First blade; 232-Second blade; 24-Cutter head; 241-First drive plate; 242-Second drive plate; 243-Cutter holder; 25-Cutter guard assembly; 251-First cutter guard; 2511-First cutter groove; 252-Second cutter guard; 2521-Second cutter groove. Detailed Implementation

[0036] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0037] To keep the drawings concise, only the parts relevant to this invention are shown schematically in each figure, and they do not represent the actual structure of the product. Furthermore, for ease of understanding, in some figures, only one of the components with the same structure or function is schematically depicted, or only one is labeled. In this document, "one" not only means "only one," but can also mean "more than one."

[0038] It should also be further understood that the term “and / or” as used in this application specification and the appended claims means any combination of one or more of the associated listed items and all possible combinations, and includes such combinations.

[0039] In this document, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0040] Furthermore, in the description of this application, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0041] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the specific implementation methods of this utility model will be described below with reference to the accompanying drawings. Obviously, the drawings described below are merely some embodiments of this utility model. For those skilled in the art, other drawings and other implementation methods can be obtained based on these drawings without any creative effort.

[0042] See Figure 1As shown in Figure 8, the embodiment provides a cutter assembly, which includes a cutter assembly 2 and a drive assembly 1 connected to the header frame. The drive assembly 1 is connected to the cutter assembly 2 in a transmission manner, and the drive assembly 1 converts the longitudinal power of the header into the power of the cutter to drive the cutter assembly 2 to reciprocate laterally along the header, thereby driving the cutter assembly 2 to cut crop straw. The blade beam 21 of the cutter assembly 2 is arranged along the width direction of the header and fixed to the header frame, which makes the overall strength of the cutter assembly 2 higher and the fixing effect with the header better. The blade shank 22 is arranged on the blade beam 21 along the width direction of the header, and the blade shank 22 is used to assemble the blade assembly 23 for cutting straw. Specifically, the blade assembly 23 includes a first blade 231 and a second blade 232. The first blade 231 and the second blade 232 are connected and spaced apart from each other. The cutting surfaces of the first blade 231 and the second blade 232 are opposite and located on the same plane. The backs of the first blade 231 and the second blade 232 are located on the same straight line to ensure the straightness of the blade assembly 23 and enhance the cutting effect. The blade head 24 is mounted on the blade shank 22, which is connected to the drive assembly 1, enabling the blade assembly 23 to move laterally and reciprocally to cut crop straw. The blade guard assembly 25 is used to protect the blade assembly 23. At the same time, an angle is formed between the blade and the blade guard, and the straw is placed in the angle. During the lateral movement of the blade assembly 23, the angle between the blade and the blade guard decreases, forming a scissor-like structure, and the blade cuts the straw. The blade guard assembly 25 includes a first blade guard 251 and a second blade guard 252 fixed to the blade beam 21. The first blade guard 251 includes a first blade groove 2511, which is used to set the first blade 231. Specifically, the first blade groove 2511 of the first blade guard 251 is horizontally nested on the first blade 231, covering the back and edge of the first blade 231. When the blade assembly 23 moves laterally back and forth, the first blade 231 moves horizontally within the first blade groove 2511. The second blade guard 252 is provided with a second blade groove 2521. Similarly, the second blade groove 2521 is used to protect the second blade 232 from being broken when the blade assembly 23 moves laterally back and forth, thereby improving the straw cutting effect. The first blade guard 251 and the second blade guard 252 are integrally formed, and the first cutting groove 2511 and the second cutting groove 2521 are located on the same plane. This structure ensures that the first blade 231 and the second blade 232 remain on the same plane during the cutting of straw, thus maintaining the straightness of the blade assembly 23. The tip of the first blade 231 is located at the top of the first blade guard 251. Since the first blade guard 251 and the second blade guard 252 are integrally formed, the first blade 231 forms a cutting surface at the bend where the first blade guard 251 and the second blade guard 252 connect. The first blade guard 251 holds the straw in place, and the first blade 231 reciprocates to cut the straw.

[0043] In a preferred embodiment, the cutter assembly 2 is further provided with a cutter head 24 for connecting the cutter shank 22 and the drive assembly 1. The cutter shank 22 includes a first drive plate 241 and a second drive plate 242, which are horizontally disposed on the cutter shank 22 and fixedly connected to the back of a first blade and a second blade 232. One end of the first drive plate 241 and the second drive plate 242 is connected to the drive assembly 1, which transmits the power of the drive assembly 1 to the cutter shank 22, thereby realizing the reciprocating motion of the blade assembly 23. The first drive plate 241 is fixed above the blade assembly 23, and the second drive plate 242 is fixed below the cutter shank 22. The length of the second drive plate 242 is longer than the length of the first drive plate 241 to reduce the vibration frequency of the drive assembly 1 during the transmission of power to the cutter assembly 2. Since the first drive plate 241 is disposed above the blade assembly 23, the first guard 251 and the second guard 252 disposed on the side where the cutter shank 22 is connected to the drive assembly 1 are arranged vertically in opposite directions. In addition, the cutter head 24 is also provided with a cutter holder 243, which is connected to the drive assembly 1. During the process of the drive assembly 1 transmitting power to the cutter head 24, the cutter holder 243 is provided to avoid unnecessary vibration caused by the loose connection between the cutter assembly 2 and the drive assembly 1 during the reciprocating motion, so as to make the cutting effect of the cutter assembly 2 better.

[0044] In this embodiment, the drive assembly 1 includes a swing ring box 10, which is fixedly connected to the cutter holder 243. The swing ring box 10 achieves the lateral reciprocating motion of the cutter assembly 2 in the width direction of the cutting table through eccentric transmission. See also Figures 5-7The swing ring box 10 is equipped with a housing 101. Inside the housing 101 is an input shaft 102 parallel to the blade beam 21, a rotor 103 vertically mounted and connected to the input shaft 102, and a planetary gear 104 connected to the rotor 103. To achieve power output, an output shaft seat 105 rotating synchronously with the planetary gear 104 is also provided. A transmission bearing 106 is fitted onto the output shaft seat 105, and the transmission bearing 106 is fixedly connected to the blade holder 243, rotating synchronously to drive the cutting blade assembly 2. Specifically, one end of the input shaft 102 is connected to the housing 101, and the other end of the input shaft 102 is fitted with a first bevel gear 107. A second bevel gear 108 meshing with the first bevel gear 107 is fitted onto the rotor 103. The second bevel gear 108 rotates synchronously with the first bevel gear 107, thereby causing the rotor 103 to rotate synchronously with the input shaft 102. The rotor 103 is provided with a transmission cavity 1031, inside which a planetary gear 104 is provided and is driven by the rotor 103. The output shaft seat 105 is connected to the planetary gear 104 and rotates synchronously. A bearing assembly 109 is sleeved on the rotor 103, and the bearing assembly 109 rotates synchronously with the rotor 103. The bearing assembly 109 is driven by the planetary gear 104. When the bearing assembly 109 rotates, it drives the planetary gear 104 to rotate. The bearing assembly 109 meshes with the planetary gear 104 through internal splines, driving the planetary gear 104 to rotate. Since the number of teeth of the planetary gear 104 is less than that of the bearing assembly 109, the transmission ratio of the planetary gear 104 is increased. The transmission between the rotor 103 and the planetary gear 104 is inconsistent, and the speed of the planetary gear 104 is higher than that of the rotor 103. Consequently, the speed of the output bearing seat, which is driven by the planetary gear 104, increases, and the reciprocating speed of the cutter assembly 2 increases. The bearing assembly 109 includes a first bearing 1091 disposed on top, a second bearing 1092 disposed below the first bearing 1091, and a third bearing 1093 that maintains the stable rotation of the first bearing 1091 and the second bearing 1092. The third bearing 1093 is disposed above the first bearing 1091 and is sleeved on the gear hub shaft of the second bevel gear 108 to ensure the connection between the second bevel gear 108 and the rotor 103 and achieve stable rotation. The first bearing 1091 is provided with an internal spline that meshes with the planetary gear 104. The second bearing 1092 makes the transmission connection between the first bearing 1091 and the planetary gear 104 tighter, thereby increasing the transmission reliability between the first bearing 1091 and the planetary gear 104.

[0045] In this embodiment, due to the large space within the transmission cavity 1031, the output shaft seat 105 and the planetary gear 104 are prone to disconnection during transmission. Therefore, a connecting bearing 110 is provided within the transmission cavity 1031, which is sleeved on the planetary gear 104 and the output shaft seat 105 to prevent positional movement of the planetary gear 104 and the output shaft seat 105, ensuring the reliability of the planetary gear 104 driving the output shaft seat 105 to rotate. See also Figure 8a , Figure 8bThe output shaft seat 105 is used to output the reversed power. The output shaft seat 105 includes an upper output seat 1051 and a lower output seat 1052. The upper output seat 1051 is fixed to the planetary gear 104. The upper output seat 1051 includes a first connecting boss 1051a, and the lower output seat 1052 includes a second connecting boss 1052a. The first connecting boss 1051a of the upper output seat 1051 and the second connecting boss 1052a of the lower output seat 1052 are fixedly connected by bolts. By providing the first connecting boss 1051a and the second connecting boss 1052a, the connection between the first connecting boss 1051a and the second connecting boss 1052a is tighter during transmission. A cam shaft 1052b is provided on the lower output seat 1052, and the cam shaft 1052b is connected to the transmission bearing 106 to provide power to the cutter head 24. Since the cam shaft 1052b is located on the lower output seat 1052, it is not located at the center of the rotor 103. Therefore, during the rotation of the rotor 103, the cam shaft 1052b rotates eccentrically. As a result, the cam shaft 1052b drives the cutter assembly 2 to rotate eccentrically, that is, the cutter assembly 2 moves horizontally and reciprocally along the width of the cutting table, thereby driving the cutter assembly 2 to cut the straw.

[0046] The cutting blade assembly provided by this utility model, by employing the opposite cutting surfaces of the first blade 231 and the second blade 232, can slow down the wear rate of the cutting edges and extend their service life. Simultaneously, by improving the transmission connection between the cutter head 24 and the swing ring box 10, it avoids loosening of the connection between the cutting blade assembly 2 and the drive assembly 1, preventing resonance of the cutting table and related devices. The cutting blade assembly provided by this utility model has the advantages of excellent cutting effect, stable output, and high reliability, and can prevent cutting blade breakage.

[0047] It will be apparent to those skilled in the art that various modifications and variations can be made to the exemplary embodiments of the present invention without departing from the spirit and scope of the present invention. Therefore, it is intended that the present invention cover modifications and variations falling within the scope of the appended claims and their equivalents.

Claims

1. A cutter assembly for cutting crop stalks on a harvester header, characterized in that, include: The drive assembly is fixedly connected to the cutter frame; A cutter assembly is connected to the drive assembly, and the drive assembly drives the cutter assembly to cut crop straw in the width direction of the cutting platform; The cutting tool assembly includes: A blade beam, which is arranged along the width direction of the cutting table and fixed on the cutting table frame; A cutter bar, which is fixed to the cutter beam along the width direction of the cutting table; The blade assembly includes a first blade and a second blade fixed to the blade holder. The cutting edges of the first blade and the second blade are arranged oppositely and located on the same plane. The backs of the first blade and the second blade are located on the same straight line. The cutter head connects the cutter bar to the drive assembly, driving the blade assembly to move laterally and reciprocally to cut crop straw; The blade guard assembly includes a first blade guard and a second blade guard fixed to the blade beam. The first blade guard includes a first groove for setting the first blade, and the second blade guard includes a second groove for setting the second blade.

2. The cutting tool assembly as described in claim 1, characterized in that, The cutter head includes a first drive plate and a second drive plate arranged in parallel. The first drive plate and the second drive plate are connected to the drive assembly and drive the cutter to reciprocate.

3. A cutting tool assembly as described in claim 2, characterized in that, The first blade guard and the second blade guard are integrally formed, and the first blade groove and the second blade groove are located on the same plane.

4. A cutting tool assembly as described in claim 3, characterized in that, The cutter head also includes a cutter holder, which is connected to the drive assembly.

5. A cutting tool assembly as described in claim 4, characterized in that, The drive assembly includes a swing ring box, which is connected to the cutter holder. The swing ring box is eccentrically driven to realize the lateral reciprocating motion of the cutter assembly.

6. A cutting tool assembly as described in claim 5, characterized in that, The swing ring box includes a housing, which contains an input shaft parallel to the cutter beam, a rotor vertically arranged and driven by the input shaft, planetary gears driven by the rotor, an output shaft seat driven by and rotating synchronously with the planetary gears, and a transmission bearing mounted on the output shaft seat. The transmission bearing connects to the cutter holder and drives the cutter holder to rotate synchronously. A first bevel gear is fitted on the input shaft, and a second bevel gear meshing with the first bevel gear is fitted on the rotor. The rotor has a transmission cavity, and the planetary gears are located within the transmission cavity. The output shaft seat provides power to the cutter assembly. A bearing assembly is fitted on the rotor, and the bearing assembly is driven by the planetary gears.

7. A cutting tool assembly as described in claim 6, characterized in that, The bearing assembly includes a first bearing disposed on top, a second bearing disposed below the first bearing, and a third bearing for maintaining the stable rotation of the first bearing and the second bearing. The internal gear ring of the first bearing meshes with the planetary gear. The third bearing is sleeved on the second bevel gear to fix the second bevel gear and the rotor.

8. A cutting tool assembly as described in claim 7, characterized in that, When the output shaft seat is connected to the planetary gear transmission, a connecting bearing is also provided in the transmission cavity, and the connecting bearing is sleeved on the planetary gear and the output shaft seat.

9. A cutting tool assembly as described in claim 8, characterized in that, The output shaft seat includes an upper output seat and a lower output seat. The upper output seat includes a first connecting boss, and the lower output seat includes a second connecting boss. The first connecting boss and the second connecting boss are fixedly connected.

10. A cutting tool assembly as described in claim 9, characterized in that, The lower output seat includes a cam shaft, which is connected to a transmission bearing. The transmission bearing provides transmission power to the cutter head, and the cam shaft drives the cutter assembly to rotate eccentrically.

11. A harvester, characterized in that, Includes any of the above-mentioned cutting assemblies.

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