A cutter assembly and a harvester

Abstract

This utility model provides a cutter assembly for cutting crop straw on a harvester header. It includes: a drive assembly, a blade beam, a cutter head, a cutter shank, a blade assembly, a blade guard assembly, and a friction plate. The drive assembly drives the blade assembly to reciprocate via the cutter head. The blade assembly is fixed to the cutter shank and includes at least two integrally formed blades. The blade guard assembly is fixed to the blade beam and includes at least two integrally formed blade guards. Adjacent blade guards form a blade guard groove for the reciprocating movement of the blades. Each blade guard includes a connecting part, an arc-shaped part, and a blade guard part. The friction plate is fixed to the blade beam along the width direction of the header and positioned between the blade guard assembly and the blade beam. The blades are positioned between the arc-shaped part and the friction plate on the side of the blade beam closest to the header in the width direction. The cutter shank is positioned between the blade guards and the friction plate in the length direction of the header. This utility model provides a cutter assembly that prevents blade wear, improves straw cutting efficiency, and extends the cutter's service life.

Description

Technical Field

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

[0002] The quality of crop stalk cutting directly impacts the efficiency of the harvester. Due to variations in stalk thickness among different crop types and varying operator habits, the cutter blades can easily shift or become damaged during harvesting, affecting efficiency. After prolonged harvesting, blade wear can occur, affecting straightness and increasing cutting resistance, ultimately impacting the cutting effect. Most existing harvester blades consist of moving and fixed blades, with the moving blade reciprocating relative to the fixed blade to cut the stalks. However, this reciprocating motion, driven by the drive mechanism, can easily resonate with the header, affecting its performance. Furthermore, the simultaneous cutting with both moving and fixed blades makes installing blade guards difficult, shortening blade life. Therefore, there is an urgent need for a cutter blade that offers high straightness, long service life, and wear resistance. Utility Model Content

[0003] The purpose of this utility model is to provide a cutter assembly and harvester, which has the advantages of high straightness, long service life and wear resistance.

[0004] According to one aspect of the present invention, a cutter assembly is provided for cutting crop stalks on the header of a harvester, comprising:

[0005] The drive assembly is fixedly connected to the cutter frame;

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

[0007] The cutting head is connected to the drive assembly;

[0008] A tool holder, one end of which is connected to a tool head;

[0009] The blade assembly is provided, wherein the drive assembly drives the blade assembly to reciprocate via the cutter head, the blade assembly is fixed to the cutter bar, and the blade assembly includes at least two integrally formed blades.

[0010] A blade guard assembly, which is fixed to the blade beam, includes at least two integrally formed blade guards, with a blade guard groove formed between adjacent blade guards for the reciprocating movement of the blade, and each blade guard includes a connecting part, an arc-shaped part, and a blade guard part.

[0011] A friction plate, which is fixed to the blade beam along the width direction of the cutting table and placed between the blade guard assembly and the blade beam;

[0012] The blade is positioned between the arc-shaped portion and the friction plate on the side closest to the blade beam in the width direction, and the blade shank is positioned between the blade guard and the friction plate in the length direction of the cutting table.

[0013] By incorporating friction plates between the blade guard assembly and the blade beam, blade wear is prevented. The blade shank is positioned between the blade guard and the friction plate to maintain the straightness of the blade assembly, thereby improving straw cutting efficiency and extending the lifespan of the cutter.

[0014] Preferably, the blade guard further includes a reinforcing part, which is fixed to the blade beam and is symmetrically arranged with the connecting part.

[0015] Preferably, the connecting parts of two adjacent blade guards are connected along the width direction of the cutting table.

[0016] Preferably, the blade guard includes an upper blade guard and a lower blade guard, and the lower blade guard, the blade holder, and the friction plate are disposed on the same plane.

[0017] Preferably, the blade guard further includes a blade rest, which is disposed between two adjacent blade guards and connected to adjacent lower blade guard portions, for supporting the blade.

[0018] Preferably, the cutter head includes an upper drive plate and a lower drive plate arranged in parallel, the upper drive plate is connected to the blade assembly, and the lower drive plate is connected to the cutter bar.

[0019] Preferably, the cutter head further includes a mounting base, which is connected to the drive assembly.

[0020] Preferably, the blade is connected to the blade holder by bolts.

[0021] Preferably, two integrally formed blade guards are positioned on the blade beam, one above the other, near the mounting base.

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

[0023] This utility model provides a cutter assembly in which the cutter head, connected to the drive assembly, drives the cutter bar to reciprocate within the guard groove of the guard assembly, thereby forming a cutting angle between the blades and the guard, enabling the cutting of straw. A friction plate positioned between the guard and the blade beam prevents blade wear and misalignment. This blade arrangement ensures the straightness of the cutter assembly and extends its service life, preventing blade damage during use and improving the harvester's working efficiency. 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 A schematic diagram of a cutting tool assembly provided for an embodiment of this utility model. Figure 1 .

[0026] Figure 2 A schematic diagram of a cutting tool assembly provided for an embodiment of this utility model. Figure 2 .

[0027] Figure 3 for Figure 1 A magnified view of a portion of the image.

[0028] Figure 4 This is a side view of a cutting tool assembly provided for an embodiment of the present invention.

[0029] Figure 5 A schematic diagram of a blade guard structure provided for an embodiment of this utility model. Figure 1 .

[0030] Figure 6 A schematic diagram of a blade guard structure provided for an embodiment of this utility model. Figure 2 .

[0031] Explanation of icon numbers:

[0032] 100-Cutter assembly; 10-Drive assembly; 20-Cutter beam; 30-Cutter head; 301-Upper drive plate; 302-Lower drive plate; 303-Mounting base; 40-Cutter shank; 50-Insert assembly; 51-Insert; 60-Cut edge guard assembly; 61-Cut edge guard; 611-Connecting part; 612-Curved part; 613-Cut edge guard part; 6131-Cut edge guard groove; 6132-Upper cut edge guard part; 6133-Lower cut edge guard part; 614-Reinforcing part; 615-Cutter holder; 70-Friction plate. Detailed Implementation

[0033] 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.

[0034] 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."

[0035] 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.

[0036] 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.

[0037] 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.

[0038] 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.

[0039] See Figures 1 to 6 As shown, the embodiment provides a cutter assembly mounted on a harvester, including a drive assembly 10 connected and fixed to the header frame, the drive assembly 10 providing power; a cutter beam 20 arranged along the width direction of the header and fixed on the header frame for mounting various components; a cutter head 30 connected to the drive assembly 10 to achieve power transmission; the cutter assembly also includes a blade assembly 50 arranged on a cutter bar 40, a blade guard assembly 60 for protecting the blades 51, and a friction plate 70.

[0040] For a specific implementation method, see Figure 1 , Figure 2 , Figure 3The blade assembly 50 is detachably fixed to the blade shank 40. The drive assembly 10 is connected to the blade assembly 50 via the blade head 30. The blade assembly 50, fixed to the blade shank 40, includes at least two integrally formed blades 51. In this embodiment, two adjacent blades 51 are fixed to the blade shank 40 with one blade facing upwards and the other blade facing downwards, and are fixed to the blade shank 40 with bolts. During harvesting, when a blade 51 is damaged, it can be disassembled and replaced in time to avoid affecting the straw cutting effect and save costs. The blade guard assembly 60 can also be fixed to the blade beam 20 by bolts. The blade guard assembly 60 includes at least two integrally formed blade guards 61. A blade guard groove 6131 is formed between adjacent blade guards 61 to allow the blade 51 to reciprocate. When the cutter assembly is stationary, the tip of the blade 51 is placed on top of the blade guard groove 6131. The blade guard 61 includes a connecting part 611, an arc-shaped part 612, and a blade guard part 613. The connecting part 611 is used to connect and fix with the blade beam 20. The blade guard groove 6131 is provided in the blade guard part 613. The blade guard part 613 and the arc-shaped part 612 are used to set the blade 51. The blade 51 can reciprocate between the blade guard part 613 and the arc-shaped part 612 along the width direction of the cutting table. In this embodiment, the friction plate 70 is also disposed on the blade beam 20 along the width direction of the cutting table, located between the blade beam 20 and the guard 61. The friction plate 70 is disposed below the connecting part 611 of the guard 61. The blade 51 is disposed on the side of the cutting table near the blade beam 20, between the arc-shaped part 612 and the friction plate 70, and is located below the arc-shaped part 612 and above the friction plate 70. The friction plate 70 abuts against the side of the blade 51 near the blade beam 20. The blade shank 40 is disposed between the guard 61 and the friction plate 70 along the length direction of the cutting table. In this configuration, the blade shank 40, the guard 61, and the friction plate 70 are kept on the same horizontal plane, so that all the blades 51 in the blade assembly 50 are kept on the same straight plane in the horizontal direction, effectively reducing cutting resistance. Meanwhile, the friction plate 70 is set against the side of the blade 51 near the blade beam 20 and the arc-shaped part 612 of the blade guard 61, which can effectively prevent the blade 51 from being worn or moving, thus reducing the stability and reliability of the cutter assembly. It can also effectively reduce the vibration frequency of the cutter assembly, avoid resonance with the header, and improve the reliability of the harvester.

[0041] In a preferred embodiment, see Figure 4 , Figure 5 , Figure 6The blade guard 613 includes an upper blade guard 6132 and a lower blade guard 6133. The lower blade guard 6133, the blade shank 40, and the friction plate 70 are all located on the same plane. The blade guard 61 also has a reinforcing part 614, which is fixed to the blade beam 20 and symmetrically arranged with the connecting part 611. The reinforcing part 614 is also connected to the blade guard 613 to enhance the structural stability of the blade guard 61. The connecting parts 611 of two adjacent blade guards 61 are connected along the width of the cutting table to ensure the reliability of the blade assembly 50 during reciprocating motion, prevent the blade 51 from breaking when cutting thicker straw, and prevent the two adjacent blades 51 from bending at the connection point, thus affecting the straightness of the blade assembly 50. The blade guard 61 is also provided with a blade holder 615, which is located between two adjacent blade guards 61 and connects the lower blade guard parts 6133 of the two adjacent blade guards 61. It is used to support the blade 51 and improve the structural strength of the blade assembly 50 in the width direction of the cutting table during the cutting of straw.

[0042] The cutter head 30 connects the blade 51 to the drive assembly 10, thereby realizing the reciprocating motion of the cutter in the width direction of the cutter head. The cutter head 30 includes an upper drive plate 301 and a lower drive plate 302 arranged in parallel. The upper drive plate 301 connects to the blade assembly 50, and the lower drive plate 302 connects to the cutter bar 40. The length of the lower drive plate 302 is longer than that of the upper drive plate 301. This structure improves the reliability of the cutter bar 40 and the blade assembly 50 during reciprocating motion in the width direction of the cutter head, and prevents vibration of the blade assembly 50 and the cutter, which could cause resonance in the cutter head and affect the harvesting efficiency. To ensure stable power transmission between the cutter bar 40, the blade assembly 50, and the drive device, the cutter head 30 is also provided with a mounting base 303, which is connected to the drive assembly 10 to ensure reliable transmission. Meanwhile, to ensure reliable transmission efficiency and prevent the guard 61 from affecting the transmission connection between the blade 51 and the drive assembly 10, two integrated guards 61 are arranged on the blade beam 20 on the side near the mounting base 303, with the arc-shaped part 612 and the connecting part 611 arranged below the blade beam 20, to ensure a stable connection between the upper drive plate 301 and the blade assembly 50.

[0043] This utility model provides a cutter assembly in which the cutter head 30, connected to the drive assembly 10, drives the cutter bar 40 to achieve reciprocating motion of the blade assembly 50 within the guard groove 6131 of the guard assembly 60, forming a cutting angle between the blade 51 and the guard 61, enabling straw cutting. The friction plate 70, located between the guard 61 and the blade beam 20, prevents wear and misalignment of the blade 51. This blade 51 configuration ensures the straightness of the cutter assembly and extends its service life, preventing blade damage during use and improving the harvester's working efficiency.

[0044] 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 blade beam, which is arranged along the width direction of the cutting table and fixed on the cutting table frame; The cutting head is connected to the drive assembly; A tool holder, one end of which is connected to a cutting head; The blade assembly is provided, wherein the drive assembly drives the blade assembly to reciprocate via the cutter head, the blade assembly is fixed to the cutter bar, and the blade assembly includes at least two integrally formed blades. A blade guard assembly, which is fixed to the blade beam, includes at least two integrally formed blade guards, with a blade guard groove formed between adjacent blade guards for the reciprocating movement of the blade, and each blade guard includes a connecting part, an arc-shaped part, and a blade guard part. A friction plate, which is fixed to the blade beam along the width direction of the cutting table and placed between the blade guard assembly and the blade beam; The blade is positioned between the arc-shaped portion and the friction plate on the side closest to the blade beam in the width direction, and the blade shank is positioned between the blade guard and the friction plate in the length direction of the cutting table.

2. The cutting tool assembly as described in claim 1, characterized in that, The blade guard also includes a reinforcing part, which is fixed to the blade beam and is symmetrically arranged with the connecting part.

3. A cutting tool assembly as described in claim 2, characterized in that, The connecting parts of two adjacent blade guards are connected along the width of the cutting table.

4. A cutting tool assembly as described in claim 3, characterized in that, The blade guard includes an upper blade guard and a lower blade guard, and the lower blade guard, the blade bar, and the friction plate are disposed on the same plane.

5. A cutting tool assembly as described in claim 4, characterized in that, The blade guard also includes a blade rest, which is disposed between two adjacent blade guards and connected to adjacent lower blade guard portions, for supporting the blade.

6. A cutting tool assembly as described in claim 5, characterized in that, The cutter head includes an upper drive plate and a lower drive plate arranged in parallel. The upper drive plate is connected to the blade assembly, and the lower drive plate is connected to the cutter bar.

7. A cutting tool assembly as described in claim 6, characterized in that, The cutter head also includes a mounting base, which is connected to the drive assembly.

8. A cutting tool assembly as described in claim 7, characterized in that, The blade is connected to the blade holder by bolts.

9. A cutting tool assembly as described in claim 8, characterized in that, Two integrally formed blade guards are located on the blade beam near the mounting base, arranged in opposite directions.

10. A harvester, characterized in that, Includes the cutting assembly as described in any one of claims 1-9.

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