CN110122046A - A kind of cutter for agricultural machinery - Google Patents

Abstract

This application discloses a kind of cutter for agricultural machinery, including cutter hub, the cutter hub is provided with blade, and the blade is provided with multiple raised cladding layers, multiple raised cladding layer close-packed arrays on one side.Due to the multiple raised cladding layers of one side setting in blade, blade autogenous grinding can be played in the use of cutter, the effect for the more grinding the more sharp, and due to the application protrusions cladding layer be provided with it is multiple, raised cladding layer compares the entire cladding layer of blade surface cladding, contact area between cutting object is smaller, therefore the frictional force of cladding layer and cutting object reduces in cutting process, and then reduces the risk that cladding layer falls off.Due to close-packed arrays between multiple cladding layers and independently of each other, even if the cladding layer currently worn falls off, there is also there are multiple cladding layer claddings in blade surface, the wearability in blade later period will not be influenced.

Description

A knife for agricultural machinery

technical field

The present application relates to the technical field of agricultural machinery, in particular to a knife for agricultural machinery.

Background technique

A cutting tool is a tool used for cutting in mechanical manufacturing, also known as a cutting tool. The vast majority of knives are for machine use, but some are also for hand use. Since the tools used in mechanical manufacturing are basically used to cut objects, "tools" are generally understood as cutting tools. At present, knives are widely used in the field of agriculture, such as plowshares commonly used in plowing land, lawnmowers used in mowing grass, harvesters used in grain harvesting, and so on. However, during the working process of the harvester, since the stalks rub against the cutter when crushing, the cutter is gradually worn out, which reduces the efficiency of the agricultural machinery at work.

At present, domestic agricultural knives are still mainly made of single metal materials. Domestic knives generally have the problems of low hardness, low wear resistance, and short service life. They are often completely unusable due to severe wear; At the edge of the blade, there will often be bluntness, severe wear and even chipping on the edge.

In order to solve the above problems, in the prior art, a high-hardness cladding layer is provided on one side of the blade. Since the hardness of the cladding layer is higher than that of the metal of the knife, the self-grinding effect of the blade is realized during the use of the knife. However, because the cladding layer is directly clad on one side of the blade, the cladding layer will rub against the cutting object during the cutting process, which not only leads to increased friction during cutting, but also increases the cladding layer with the use of the tool. The layer is also prone to overall shedding, resulting in reduced tool wear resistance.

Contents of the invention

In order to solve the above technical problems, the application proposes the following technical solutions:

In the first aspect, the embodiment of the present application provides a knife for agricultural machinery, including a knife body, the knife body is provided with a blade, one side of the blade is provided with a plurality of convex cladding layers, and a plurality of the The raised cladding layers are closely arranged.

With the above-mentioned implementation, since a plurality of raised cladding layers are arranged on one side of the blade, the self-sharpening effect of the blade can be achieved during the use of the knife, and the sharper the sharper it is, and since the raised cladding layer in the present application is provided with Multiple, multiple raised cladding layers have a smaller contact area with the cutting object than the entire cladding layer on the surface of the blade, so the friction between the cladding layer and the cutting object is reduced during the cutting process, and thus Reduced risk of cladding peeling off. Since multiple cladding layers are closely arranged and independent of each other, even if the currently worn cladding layer falls off, there are still multiple cladding layers cladding on the surface of the blade, which will not affect the later wear resistance of the blade.

With reference to the first aspect, in a first possible implementation manner of the first aspect, the section of the raised cladding layer is triangular, the raised cladding layer includes a first cladding surface and a second cladding surface, and the raised cladding layer includes a first cladding surface and a second cladding surface. The connecting end of the first cladding surface and the second cladding surface is a first straight line structure, the cladding place between the first cladding surface and the blade surface is a second straight line structure, and the second cladding surface and the blade surface The cladding part is the third straight line structure. The cross-section of the raised cladding layer is triangular, so the cladding layer plays an auxiliary cutting role during the cutting process of the tool, thereby relatively reducing the probability of the cladding layer falling off due to simple wear.

With reference to the first possible implementation manner of the first aspect, in the second possible implementation manner of the first aspect, the second straight line structure and the third straight line structure are vertically arranged between the blade surface and the blade edge The direction of the first straight line structure is perpendicular to the direction of the blade. The raised triangular tips of the raised cladding layer in this implementation form a plurality of tiny cutting structures on the surface of the blade, so during the self-grinding process of the blade, multiple raised cladding layers can simultaneously achieve the effect of auxiliary cutting .

With reference to the second possible implementation of the first aspect, in the third possible implementation of the first aspect, both the first cladding surface and the second cladding surface are cladding surfaces with a slope structure, and the first cladding surface and The angle between the second cladding surfaces is 15-30 degrees. The angle of the cutting structure formed by the first cladding surface and the second cladding surface is between 15-30 degrees, so that the cutting structure is guaranteed to be sharp.

With reference to the first possible implementation of the first aspect, in the four possible implementations of the first aspect, the second straight line structure and the third straight line structure are arranged transversely between the blade surface and the direction of the blade Parallel, the direction of the first straight line structure is parallel to the direction of the blade. In this implementation mode, the raised cladding layer is arranged laterally on the surface of the blade, from the first raised cladding layer to the last raised cladding layer at the end of the blade, and the raised cladding layer cooperates with the blade in order to realize auxiliary cutting.

With reference to the fourth possible implementation of the first aspect, in the fifth possible implementation of the first aspect, the first cladding surface is a cladding surface with a slope structure, the second cladding surface is perpendicular to the blade, The angle between the first cladding surface and the blade surface is 5-10 degrees. The angle between the first cladding surface of the raised cladding layer and the blade surface is set at 5-10 degrees, so that the slope formed by the cladding layer and the blade surface is favorable for cutting.

In combination with the third or fifth possible implementation of the first aspect, in the sixth possible implementation of the first aspect, the first convex cladding layer and the second linear structure and the third linear structure at the surface cladding of the blade The straight line structure coincides with the third straight line structure and the second straight line structure at the two adjacent raised cladding layers and the surface cladding of the blade respectively, and the first raised cladding layer is except for the Either of the cladding layers at both ends of the blade.

With reference to the first aspect, in a seventh possible implementation manner of the first aspect, the cross section of the raised cladding layer is a semi-cylindrical surface, and the cylindrical surface of the raised cladding layer is a cladding layer with rounded transitions. The semi-cylindrical surface after the round corner transition can also reduce the friction area between the raised cladding layer and the object during the cutting process of the tool, thereby reducing the risk of the cladding layer falling off.

With reference to the first to seventh possible implementation manners of the first aspect, in an eighth possible implementation manner of the first aspect, the width of the raised cladding layer is 3.5-3.8 mm.

With reference to the eighth possible implementation manner of the first aspect, in a ninth possible implementation manner of the first aspect, the maximum thickness of the raised cladding layer is 0.4-0.5 mm.

Description of drawings

Fig. 1 is a schematic structural view of a cutter for agricultural machinery provided by the embodiment of the present application;

Fig. 2 is the schematic diagram of the cladding raised cladding layer at the blade of the tool in Fig. 1;

Fig. 3 is a schematic structural view of a raised cladding layer at the edge of Fig. 1;

Fig. 4 is a schematic structural diagram of another cutter for agricultural machinery provided by the embodiment of the present application;

Fig. 5 is a schematic diagram of a cladding convex cladding layer at a blade of the cutter in Fig. 4;

Fig. 6 is a schematic structural view of the raised cladding layer at the edge of Fig. 4;

Fig. 7 is a schematic diagram of another kind of cladding convex cladding layer at the edge of the cutter in Fig. 4;

The symbols in Figure 1-7 are represented as:

1-knife body, 2-blade, 3-convex cladding layer, 4-first cladding surface, 5-second cladding surface, 6-first linear structure, 7-second linear structure, 8-third Straight line construction, 9-bolt holes.

Detailed ways

The scheme will be described below in conjunction with the accompanying drawings and specific implementation methods.

Embodiment one

Fig. 1 is a structural schematic diagram of a cutter for agricultural machinery provided by the embodiment of the present application, referring to Fig. 1, the cutter for agricultural machinery in the present embodiment includes a cutter body 1, and the cutter body 1 is provided with a blade 2. One side of the blade 2 is provided with a plurality of raised cladding layers 3. Referring to FIG. 2, a plurality of raised cladding layers 3 are closely arranged. The raised cladding layer 3 in this embodiment can reduce the contact area between the cladding layer and the cutting object, thereby reducing the friction between the cladding layer and the cutting object. Adding the raised cladding layer 3 on the surface of the blade 2 not only improves the wear resistance of the cutter, but also improves the hardness and corrosion resistance of the blade 2, because the surface hardness of the raised cladding layer 3 is not set on the blade 2. Therefore, the degree of wear on both sides of the blade 2 is different during the use of the tool, causing the blade to become sharper and sharper, thereby achieving the effect of self-sharpening.

Referring to Fig. 3, the section of the raised cladding layer 3 in this embodiment is triangular, and the raised cladding layer 3 includes a first cladding surface 4 and a second cladding surface 5, and the first cladding surface 4 and The connecting end of the second cladding surface 5 is a first linear structure 6, and the cladding place between the first cladding surface 4 and the surface of the blade 2 is a second linear structure 7, and the second cladding surface 5 and the blade 2. The cladding part on the surface is the third linear structure 8.

The second linear structure 7 and the third linear structure 8 at the first convex cladding layer and the surface cladding of the blade 2 are respectively fused with the two adjacent convex cladding layers 3 and the surface of the blade 2 The third straight line structure 8 and the second straight line structure 7 overlap, and the first convex cladding layer is any cladding layer except the cladding layer at the two ends of the blade 2, so that the convex cladding layer The cladding layers 3 are closely arranged and there is no overlap between the cladding layers.

In this embodiment, the second linear structure 7 and the third linear structure 8 are vertically arranged on the surface of the blade 2 and perpendicular to the direction of the blade 2, and the direction of the first linear structure 6 is parallel to the The trend of blade 2 is vertical. The protruding triangular tips of the raised cladding layer 3 in this implementation form a plurality of tiny cutting structures on the surface of the blade 2, so during the cutting self-grinding process of the blade 2, multiple raised cladding layers 3 can simultaneously realize Auxiliary cutting effect.

It can further be seen from FIG. 3 that the first cladding surface 4 and the second cladding surface 5 in this embodiment are cladding surfaces with a slope structure, and the angle between the first cladding surface 4 and the second cladding surface 5 is 15- 30 degrees. The angle of the cutting structure formed by the first cladding surface 4 and the second cladding surface 5 is between 15-30 degrees, and the angle of the cutting structure is set between 15-30 degrees to ensure a certain sharpness of the cutting structure. Moreover, the width of the raised cladding layer 3 in this embodiment is set to be 3.5-3.8 mm, so that more raised cladding layers 3 can be clad on the surface of the blade 2 . The maximum thickness of the raised cladding layer 3 is 0.4-0.5 mm, because self-grinding can be realized as long as there is a cladding layer on one side of the blade, so the raised cladding layer 3 does not need to be set too thick.

The cutter in this embodiment is also provided with a bolt hole 9, the bolt hole 3 is arranged on the side corresponding to the blade 2 of the cutter body 1, and the bolt hole 9 is provided with a plurality, and the plurality of bolt holes The bolt holes 9 are uniformly arranged on the cutter body 1 . Specifically, the number of bolt holes 9 is 4-6. The bolt hole 9 is provided with an internal thread, and the internal thread is used to fix the agricultural machine with a bolt.

In this embodiment, the cutter body 1 is a fan-shaped cutter body, and the blade 2 is located on the arc side of the fan-shaped structure of the cutter body 1. The fan-shaped overall shape of the cutter body 1 is conducive to increasing the length of the blade, which is conducive to Knife for cutting.

It can be seen from the above embodiments that the embodiment of the present application provides a knife for agricultural machinery, including a knife body 1, the knife body 1 is provided with a blade 2, and one side of the blade 2 is provided with a plurality of convex cladding Layer 3, a plurality of raised cladding layers 3 are closely arranged, and the cross-section of the plurality of raised cladding layers 3 is triangular. Because a plurality of raised cladding layers 3 are set on one side of the blade 2, the self-grinding effect of the blade 2 can be played in the use of the cutter, and the effect of sharpening becomes sharper. One, the raised cladding layer 3 covers the entire cladding layer compared with the surface of the blade 2, and the contact area with the cutting object is smaller, so the friction between the raised cladding layer 3 and the cutting object decreases during the cutting process. , thereby reducing the risk of cladding layer falling off. Since the plurality of raised cladding layers 3 are closely arranged and independent of each other, even if the currently worn cladding layer falls off, there are still a plurality of raised cladding layers 3 cladding on the surface of the blade, which will not affect the blade. 2 The wear resistance in the later stage, and the raised cladding layer 3 with a triangular cross-section can also assist the cutting of the tool.

Embodiment two

The cutter of the agricultural machinery provided in this embodiment is the same as the cutter in Embodiment 1, that one side of the blade 2 is provided with a plurality of raised cladding layers 3, the cross section of the raised cladding layers 3 is triangular, and the raised cladding layers 3 are triangular. The cladding layer 3 includes a first cladding surface 4 and a second cladding surface 5, the connecting end of the first cladding surface 4 and the second cladding surface 5 is a first straight line structure 6, and the first cladding surface 4 The cladding position with the surface of the blade 2 is a second linear structure 7 , and the cladding position between the second cladding surface 5 and the surface of the blade 2 is a third linear structure 8 .

Referring to Figure 4 and Figure 5, the difference from Embodiment 1 is that the raised cladding layer 3 in this embodiment is arranged laterally, specifically the second linear structure 7 and the third linear structure 8 are laterally arranged on the The surface of the blade 2 is parallel to the direction of the blade 2 , and the direction of the first linear structure 6 is parallel to the direction of the blade 2 .

Referring to Fig. 6, the first cladding surface 4 is a slope structure cladding surface, the second cladding surface 5 is perpendicular to the blade 2, and the angle between the first cladding surface 4 and the surface of the blade 2 is 5-10 degrees.

In this implementation mode, the raised cladding layer 3 is arranged laterally on the surface of the blade, from the first raised cladding layer 3 to the last raised cladding layer 3 at the blade end of the blade 2, and the raised cladding layer 3 is sequentially matched with the blade to realize Auxiliary cutting. The angle between the first cladding surface 4 of the raised cladding layer 3 and the surface of the blade 2 is set at 5-10 degrees, so that the slope formed by the raised cladding layer 3 and the surface of the blade 2 is favorable for cutting.

Embodiment three

Referring to Fig. 7, the cutter of the agricultural machinery provided in this embodiment is the same as that in the second embodiment in that the raised cladding layer 3 is arranged laterally adjacent to each other. The difference from the second embodiment is that the raised cladding layer 3 in this embodiment The cross-section of the raised cladding layer 3 is a semi-cylindrical, and the cylindrical surface of the raised cladding layer 3 is a cladding layer with rounded transitions.

In this embodiment, the semi-cylindrical surface after the fillet transition can also reduce the friction area between the raised cladding layer and the object during the tool cutting process, thereby reducing the risk of the cladding layer coming off.

It should be noted that in this article, relative terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply these No such actual relationship or order exists between entities or operations. Furthermore, the term "comprises", "comprises" or any other variation thereof is intended to cover a non-exclusive inclusion such that a process, method, article or apparatus comprising a set of elements includes not only those elements, but also includes elements not expressly listed. other elements of or also include elements inherent in such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of additional identical elements in the process, method, article or apparatus comprising said element.

Of course, the above description is not limited to the above examples, and the technical features not described in this application can be realized by or using existing technologies, and will not be repeated here; the above embodiments and drawings are only used to illustrate that the technical solutions of this application are not It is a limitation to the present application. As an alternative, the present application has only been described in detail with reference to preferred embodiments. Those of ordinary skill in the art should understand that those of ordinary skill in the art will make The changes, modifications, additions or replacements do not deviate from the purpose of the present application, and should also belong to the scope of protection of the claims of the present application.

Claims (10)

1. A cutter for agricultural machinery, comprising a cutter body (1), said cutter body (1) being provided with a blade (2), characterized in that one side of said blade (2) is provided with a plurality of protrusions A cladding layer (3), a plurality of said raised cladding layers (3) are closely arranged. 2. The cutter for agricultural machinery according to claim 1, characterized in that, the section of the raised cladding layer (3) is triangular, and the raised cladding layer (3) includes a first cladding surface (4) and the second cladding surface (5), the connecting end of the first cladding surface (4) and the second cladding surface (5) is a first straight line structure (6), and the first cladding surface ( 4) The cladding position with the surface of the blade (2) is a second linear structure (7), and the cladding position between the second cladding surface (5) and the surface of the blade (2) is a third linear structure (8) . 3. The knife for agricultural machinery according to claim 2, characterized in that, the second linear structure (7) and the third linear structure (8) are vertically arranged on the surface of the blade (2) The direction of the first straight line structure (6) is perpendicular to the direction of the blade (2). 4. The cutter for agricultural machinery according to claim 3, characterized in that, both the first cladding surface (4) and the second cladding surface (5) are slope structure cladding surfaces, and the first cladding surface The angle between (4) and the second cladding surface (5) is 15-30 degrees. 5. The cutter for agricultural machinery according to claim 2, characterized in that, the second linear structure (7) and the third linear structure (8) are arranged laterally between the surface of the blade (2) and The direction of the blade (2) is parallel, and the direction of the first linear structure (6) is parallel to the direction of the blade (2). 6. The cutter for agricultural machinery according to claim 5, characterized in that, the first cladding surface (4) is a cladding surface with a slope structure, and the second cladding surface (5) is perpendicular to the blade (2), the angle between the first cladding surface (4) and the surface of the blade (2) is 5-10 degrees. 7. The cutter for agricultural machinery according to claim 4 or 6, characterized in that, the first convex cladding layer and the second linear structure (7) at the surface cladding of the blade (2) and the first The three linear structures (8) are respectively connected with the third linear structure (8) and the second linear structure (7) at the surface cladding of the two adjacent raised cladding layers (3) and the blade (2). Coincidentally, the first raised cladding layer is any cladding layer except the cladding layers at both ends of the blade (2). 8. The cutter for agricultural machinery according to claim 1, characterized in that, the section of the raised cladding layer (3) is a semi-cylindrical, and the cylindrical surface of the raised cladding layer (3) is Cladding layer for fillet transitions. 9. The cutter for agricultural machinery according to claim 2 or 8, characterized in that, the width of the raised cladding layer (3) is 3.5-3.8 mm. 10. The cutter for agricultural machinery according to claim 9, characterized in that the maximum thickness of the raised cladding layer (3) is 0.4-0.5 mm.