CN219068921U

CN219068921U - Roller blade of agricultural harvester

Info

Publication number: CN219068921U
Application number: CN202223113522.1U
Authority: CN
Inventors: 李刚; 鲁钢
Original assignee: Xinyuan Shicheng New Material Technology Nanjing Co ltd
Current assignee: Xinyuan Shicheng New Material Technology Nanjing Co ltd
Priority date: 2022-11-22
Filing date: 2022-11-22
Publication date: 2023-05-26
Anticipated expiration: 2032-11-22

Abstract

The utility model belongs to the technical field of harvesters, in particular to a roller blade of an agricultural harvester, which comprises a blade body, wherein two ends of the blade body are welded on the inner walls of two sides of the roller of the harvester, and a hard surface iron-cobalt-nickel alloy layer is locally formed on the stress surface of the blade body through laser overlaying. According to the utility model, the hard surface iron-cobalt-nickel alloy layer is locally arranged on the stress surface of the blade body, so that the strength of the stress surface of the blade body is enhanced, the wear resistance of the blade body can be improved while the weight increase is reduced as much as possible under the condition of not increasing the whole thickness of the blade body, and the service life of the blade body is prolonged.

Description

Roller blade of agricultural harvester

Technical Field

The utility model relates to the technical field of harvesters, in particular to a roller blade of an agricultural harvester.

Background

With the rapid development of agricultural machinery in China, large-scale agricultural harvesters are increasingly popular, but the stability of the agricultural harvesters is not ideal, when the harvesters are used, a carrier of each harvester carries a grass discharging fan, a roller of each grass discharging fan rotates at a certain speed, blades arranged on the surface of each grass discharging fan in a circumferential array cut stalks of crops to harvest the crops, the rotating speed of each grass discharging fan is generally 2500 rpm, the grass discharging fans run at the rotating speed for a long time, the stress surfaces of the blades on the roller cannot be used any more due to long-term friction and high Wen Henkuai, frequent replacement is needed, and the replacement of the blades is time-consuming and labor-consuming.

In the prior art, aiming at the condition that a blade on a harvester roller is easy to damage and break, two conventional ways are adopted, one way is to increase the thickness of a part, the way increases the use time of the blade, but increases the weight of the roller of a grass discharging fan, so that the rotation number of the roller is reduced, the wind speed is reduced, the wind power requirement during harvesting cannot be met, the other way is to use higher-strength steel to replace the traditional steel, the abrasion resistance of the blade is improved due to the improvement of the hardness, but after the yield strength of the material reaches more than 700MPa, the part requiring special-shaped stamping is difficult to form, the substrate is damaged during stamping, the strength of the part is influenced, and the use effect is influenced, so that the agricultural harvester roller blade with a surface coating is provided for solving the problems.

Disclosure of Invention

(one) solving the technical problems

Aiming at the defects of the prior art, the utility model provides a roller blade of an agricultural harvester, which solves the problems that the roller blade in the grass discharging fan structure of the harvester is thickened and the high-strength steel is used for replacing the roller blade in the prior art to avoid the problems that the rotating speed of the grass discharging fan is influenced and the blade is inconvenient to punch and form in the mode that the roller blade is easy to break.

(II) technical scheme

The utility model adopts the following technical scheme for realizing the purposes:

the utility model provides an agricultural harvester cylinder blade, includes the blade body, the both ends welding of blade body is at the both sides inner wall of harvester cylinder, and the atress face part on its surface has hard face iron cobalt nickel alloy layer through the laser build-up welding, the width on hard face iron cobalt nickel alloy layer is 5 millimeters, and its thickness is 400 ~ 800 microns, straight flute fixed orifices have been seted up to the equidistance on the blade body.

Further, the blade body is made of one of 22MnB5 steel or common Q235 steel.

Further, the blade body is a strip-shaped plate body with an arc-shaped section, the included angle alpha of the extension line of the arc-shaped surface of the plate body is 83 degrees, and the thickness beta of the plate body is 3-5 millimeters.

Further, the raw materials of the hard surface iron-cobalt-nickel alloy layer comprise hard iron-cobalt-nickel alloy powder mixed with 5% of boron nitride and 3% of tungsten carbide, and the particle size of the three powders is not smaller than 100 meshes.

(III) beneficial effects

Compared with the prior art, the utility model provides a roller blade of an agricultural harvester, which comprises the following components

The beneficial effects are that:

according to the utility model, the hard surface iron-cobalt-nickel alloy layer is locally arranged on the stress surface of the blade body, so that the strength of the stress surface of the blade body is enhanced, the wear resistance of the blade body can be improved while the weight increase is reduced as much as possible under the condition of not increasing the whole thickness of the blade body, and the service life of the blade body is prolonged.

Drawings

FIG. 1 is a schematic perspective view of the present utility model;

FIG. 2 is a schematic top view of a portion of the structure of the present utility model;

FIG. 3 is a schematic diagram of the front cross-sectional structure of the present utility model.

In the figure: 1. a blade body; 2. a hard-sided iron-cobalt-nickel alloy layer; 3. straight slot fixing hole.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Examples

As shown in fig. 1, fig. 2 and fig. 3, the roller blade of the agricultural harvester according to one embodiment of the present utility model comprises a blade body 1, wherein two ends of the blade body 1 are welded on two side inner walls of the roller of the harvester, a stress surface on the surface of the blade body is locally provided with a hard surface iron-cobalt-nickel alloy layer 2 through laser surfacing, the width of the hard surface iron-cobalt-nickel alloy layer 2 is 5 mm, the thickness of the hard surface iron-cobalt-nickel alloy layer is 400-800 micrometers, and straight slot fixing holes 3 are equidistantly formed in the blade body 1; through setting up hard surface iron cobalt nickel alloy layer 2 in the stress surface part on blade body 1 surface, can strengthen and mention the intensity of blade body 1 stress surface when not increasing blade body 1 thickness, the width of hard surface iron cobalt nickel alloy layer 2 is 5 millimeters, and its thickness is 400 ~ 800 microns's setting, be enough so that the local hardness of stress surface of blade body 1 obtains improving greatly, can effectively promote its wear resistance under the circumstances that reduces weight increase as far as possible, lengthen its life, hard surface iron cobalt nickel alloy layer 2 is because through the laser build-up welding production, laser build-up welding technique heats concentratedly, can avoid the thermal damage, stress and deformation to blade body 1 production are minimum, can reduce the adverse effect to blade body 1, the setting of straight flute fixed orifices 3, be used for under the circumstances that harvester cylinder both ends interval is great, fix blade body 1 on the inside support of cylinder.

In some embodiments, the blade body 1 is made of one of 22MnB5 steel or common Q235 steel, and the 22MnB5 steel or the common Q235 steel has better toughness, is not easy to generate welding cracks, and is also a material of common stress parts of agricultural machinery.

As shown in fig. 1 and 3, in some embodiments, the blade body 1 is a strip-shaped plate body with an arc-shaped section, an included angle α of an extension line of an arc-shaped surface of the plate body is 83 °, and a thickness β of the plate body is 3-5 mm; the extension line contained angle alpha of arcwall face is 83 arcwall faces and cuts plant stalks when setting up the cylinder and rotate, and plate thickness beta is 3 ~ 5 millimeters setting, can select the thickness of blade body 1 according to the motor performance of harvester row grass fan, avoids because the thickness is great when having avoided blade body 1 intensity to lead to blade body 1 overweight.

In some embodiments, the raw materials of the hard surface iron cobalt nickel alloy layer 2 comprise hard iron cobalt nickel alloy powder mixed with 5% boron nitride and 3% tungsten carbide, the particle sizes of the three powders are not less than 100 meshes, the boron nitride and the tungsten carbide can play a role in improving the hardness of the hard surface iron cobalt nickel alloy layer 2, the hard surface iron cobalt nickel alloy layer 2 is easier to cut plant stalks when in use, the particle size of the powder is not less than 100 meshes, the particles of the powder are smaller, the powder is convenient to heat and melt, and laser overlaying is convenient to quickly perform, and stress and deformation caused by the influence of heat on the blade body 1 are reduced.

Finally, it should be noted that: the foregoing description is only a preferred embodiment of the present utility model, and the present utility model is not limited thereto, but it is to be understood that modifications and equivalents of some of the technical features described in the foregoing embodiments may be made by those skilled in the art, although the present utility model has been described in detail with reference to the foregoing embodiments. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.

Claims

1. The utility model provides an agricultural harvester cylinder blade, includes blade body (1), its characterized in that: the two ends of the blade body (1) are welded on the inner walls of the two sides of the harvester roller, the stress surface part of the surface of the blade body is provided with a hard surface iron cobalt nickel alloy layer (2) through laser surfacing, the width of the hard surface iron cobalt nickel alloy layer (2) is 5 mm, the thickness of the hard surface iron cobalt nickel alloy layer is 400-800 micrometers, and straight groove fixing holes (3) are formed in the blade body (1) at equal intervals.

2. An agricultural harvester drum blade according to claim 1, characterized in that: the blade body (1) is made of one of 22MnB5 steel or common Q235 steel.

3. An agricultural harvester drum blade according to claim 1, characterized in that: the blade body (1) is a strip-shaped plate body with an arc-shaped section, the included angle alpha of an extension line of an arc-shaped surface of the plate body is 83 degrees, and the thickness beta of the plate body is 3-5 mm.