CN201119277Y - Crop stubble crushing blade and crop stubble crushing device - Google Patents

Abstract

The utility model discloses a crop stubble crushing blade and a crushing device. The blades are arranged at intervals along the direction of the cutter shaft and installed on a rotatable cutter shaft. The plane where the blades are located is perpendicular to the cutter shaft. In the direction of rotation, the distance from the center of rotation of the blade to each point on the blade gradually increases from the root of the blade to the end of the blade. When carrying out field root stubble crushing operations with the supporting tractor, the blade not only cuts the large stubble into slices at the place where the crushing device passes, but also reduces the agitation and throwing of the soil by the blade into the soil. The blade adopts a convex arc blade. When working, the blade shaft rotates with the blade against the direction of the blade tip. The root of the blade first presses the stubble, and then the blade gradually enters the cutting from the root to the blade tip. This cutting method consumes a lot of power. Therefore, the utility model can chop up the root stubble and the underground root system together, and the crushing is thorough, and the effect of returning to the field is good, which is beneficial to the growth of the crops in the next season.

Description

Crop stubble crushing blade and crop stubble crushing device

technical field

The utility model relates to a crop root stubble crushing blade and a crop root stubble crushing device.

Background technique

The existing corn combine harvester and straw crushing and returning machine use a high-speed rotating moving knife to cooperate with a fixed knife on the crushing shell to crush corn stalks. To use it to crush corn stubble, it is necessary to greatly improve its overall structure; moreover, once the high-speed rotating knife enters the soil, it needs to consume a lot of power, so the current corn combine harvester and straw crushing The return machine only handles corn stalks, and rarely handles root stubble. However, if the root stubble is not treated, it is very unfavorable to the growth of the crops in the next season. People try to add a rotary tiller to the corn stalk crushing and returning machine to complete the straw crushing and root stubble treatment at the same time, but the stirring and throwing of the soil by the rotary tiller The throwing is serious, the power consumption is too large, and the crushing effect on the stubble is not satisfactory.

Utility model content

The first purpose of the utility model is to provide a blade for professionally crushing crop stubble.

The second purpose of the utility model is to provide a stubble crushing device for professionally crushing crop stubble.

In order to achieve the first purpose, the utility model adopts the following technical scheme: the crop root stubble crushing blade, when the blade is fixedly installed on the rotatable knife shaft, the plane where the blade is located is perpendicular to the knife shaft, and the blade on the blade faces the knife The direction of rotation of the shaft, the distance from the center of rotation of the blade to each point on the blade gradually increases from the root of the blade to the end of the blade.

The blade cutter body is in the shape of an arc strip, the blade is arranged on the convex edge of the arc cutter body, and the cutter body at the root of the blade is provided with a mounting part for connecting with the cutter shaft.

The cutter body of the blade is disc-shaped, and at least one tooth with a convex arc-shaped blade is provided on the circumference of the cutter body. The center of the disc cutter body is installed with the cutter shaft through a mounting hole. The centers of rotation of the blades coincide.

The arc of the blade is an involute or an Archimedes spiral.

In order to achieve the second purpose, the utility model adopts the following technical scheme: the crop stubble crushing device includes a cutter shaft that can be driven by power to rotate and blades arranged at intervals along the direction of the cutter shaft, and the plane where the blades are located is perpendicular to the cutter shaft. The blade on the blade faces the rotation direction of the knife shaft, and the distance from the center of rotation of each blade to each point on the blade blade gradually increases from the root of the blade to the end of the blade.

The cutter body of the blade is arc-shaped, and the blade is set on the convex edge of the arc-shaped cutter body. There is a mounting part for connecting with the cutter shaft on the cutter body at the root of the blade, and the blade is on the axial surface of the cutter shaft along the axis Uniformly distributed in a spiral manner.

The knife body of the blade is in the shape of an arc strip, and the blade is set on the convex edge of the arc-shaped knife body. The knife body at the root of the blade is provided with a mounting part for connecting with the knife shaft, and the same cross-section of the knife shaft is evenly distributed along the circumferential direction. 2-4 blades.

The cutter body of the blade is disc-shaped, and at least one tooth with a convex arc-shaped blade is provided on the circumference of the cutter body. The center of the disc cutter body is installed with the cutter shaft through a mounting hole. The centers of rotation of the blades coincide.

The cutter teeth of the corresponding blades at the installation positions of the blades along the axial direction of the cutter shaft on the cutter shaft are sequentially staggered by a set angle in the circumferential direction.

The arc of the blade is an involute or an Archimedes spiral.

After the blade of the utility model is installed on the cutter shaft, it can be combined with a matching tractor or a straw returning machine to carry out stubble crushing operations in the field. Rotating in the opposite direction, the rotating cutter shaft rotates with the blade, and the rotating blade can cut the ground debris, stubble and underground root system on the blade track; Blades, and the plane where each blade is located is perpendicular to the axis of the cutter shaft, so where the crushing device passes, the blades not only cut the large stubble into slices, but also reduce the agitation and throwing of the soil by the blades. Throwing improves the air quality of the crushing operation. The blade adopts a convex arc blade, and the distance from the center of rotation of the blade to each point on the blade gradually increases from the root of the blade to the end of the blade. When working, the blade shaft rotates with the blade against the direction of the blade tip, and the root of the blade first Press down the stubble and sundries, and then as the cutter shaft continues to rotate, the blade gradually enters the cutting from the root to the tip, and the depth of the incision gradually increases. The power consumption of this cutting method is greatly reduced. Therefore, this practical The new type can shred the root stubble and the underground root system at the same time, the shredding is thorough, and the effect of returning to the field is good, which is conducive to the growth of the next season's crops.

In the utility model, the teeth of the blades on the cutter shaft are sequentially staggered by a set angle in the circumferential direction. cost.

Description of drawings

Fig. 1 is the structural representation of the first kind of strip agricultural crop root stubble broken blade;

Fig. 2 is the structural representation of second kind of strip agricultural crop root stubble broken blade;

Fig. 3 is the structural representation of the first disc-shaped crop root stubble crushing blade;

Fig. 4 is the structural representation of the second disc-shaped agricultural crop root stubble broken blade;

Fig. 5 is the structural representation of the third disc-shaped agricultural crop root stubble broken blade;

Fig. 6 is a schematic structural view of the crop stubble crushing device when it is installed and used;

Fig. 7 is a structural schematic diagram of a crop stubble crushing device with arc-shaped strip blades arranged in a symmetrical manner;

Fig. 8 is the left view of Fig. 7;

Fig. 9 is a schematic diagram of a crop stubble crushing device arranged in a symmetrical manner with linear strip blades;

Fig. 10 is a structural schematic view of a crop stubble crushing device with strip blades arranged in a spiral manner when no blades are installed;

Fig. 11 is the left view of Fig. 10;

Fig. 12 is a schematic structural view of a crop stubble crushing device using a three-tooth disc-shaped blade;

Fig. 13 is the left view of Fig. 12;

Fig. 14 is a schematic structural view of a crop stubble crushing device using a single-toothed disc-shaped blade;

Fig. 15 is a left side view of Fig. 14 .

Detailed ways

The crop stubble crushing blade shown in Fig. 1 comprises an arc-shaped strip cutter body 1, the convex edge of the arc-shaped strip cutter body is a blade 2, and a mounting hole 3 is arranged on the blade root bent toward the concave edge , when the blade is installed on the cutter shaft driven by power through the mounting hole 3, the plane where the blade is located is perpendicular to the cutter shaft, the blade faces the rotation direction of the cutter shaft, and the distance from the center of rotation of the blade to each point on the blade is from The root of the blade increases gradually to the end of the blade, and the rotation center of the blade is located on the rotation center line of the cutter shaft.

The crop stubble crushing blade shown in FIG. 2 is different from the blade shown in FIG. 1 in that: the part of the cutter body where the mounting hole 3 is located is gently bent along the arc direction of the cutter body.

The crop stubble crushing blade shown in Fig. 3 includes a disc-shaped cutter body 8, three cutter teeth 9 with arc-shaped blades are uniformly arranged on the circumference of the cutter body, and a mounting hole 10 is arranged at the center of the disc cutter body , the center of the mounting hole coincides with the center of rotation of the blade, and the distance from the center of rotation of the blade to each point on the blade gradually increases from the root of the blade to the end of the blade. When the blade is installed on the corresponding cutter shaft through the mounting hole 10, the blade The plane where it is located is perpendicular to the cutter shaft, the blade on the blade faces the rotation direction of the cutter shaft, and the rotation center of the blade is located on the rotation center line of the cutter shaft.

The crop stubble crushing blade shown in Fig. 4 and Fig. 5 is different from the blade shown in Fig. 3 in that only one tooth 9 with an arc-shaped blade is arranged on the disc-shaped cutter body.

The blade arcs of the above-mentioned various structures of crop stubble crushing blades are preferably involutes or Archimedes spirals.

The stubble crushing device for crops shown in Fig. 7 and Fig. 8 includes a cutter shaft 4 and blade groups evenly spaced along the axis of the cutter shaft, and each blade group has two blades symmetrically installed on the same cross section of the cutter shaft 5. The corresponding blade sets at each installation position along the axis of the cutter shaft are staggered by 90° in the circumferential direction. The blade 5 in the blade set comprises an arc-shaped strip cutter body, the convex edge of the arc-shaped strip cutter body is a blade 2, and a mounting hole is arranged on the blade root bent to the concave edge, and the blade is installed on the blade through the mounting hole. On the knife rest 6 of the knife shaft, the distance from the center of rotation of each blade to each point on the blade 2 gradually increases from the root of the blade to the end of the blade, and the centers of rotation of all blades are located on the center line of the axis of rotation of the knife. Of course, there can also be three or four blades in the blade group, which are evenly installed on the same cross section of the cutter shaft along the circumferential direction, which can be determined according to actual needs. In this embodiment, the arc-shaped strip blade 5 can also be replaced by a straight strip-shaped blade 7, and the specific structure is shown in FIG. 9 .

The crop stubble crushing device shown in Fig. 10 and Fig. 11 includes a cutter shaft 4 and a plurality of strip blades, the blades are not shown in the figure, only the blade holder 6 is installed, and the blades in this device can be used in Fig. 1 Or the structure described in Fig. 2 can also adopt the linear strip blade among Fig. 9. It can be seen from the arrangement position of the tool holder 6 in Fig. 10 that the blades are evenly distributed in a spiral manner along the axial direction of the cutter shaft on the axial surface of the cutter shaft, and the distance from the center of rotation of each blade to each point on the blade is The distance gradually increases from the root of the blade to the end of the blade, and the rotation centers of all blades are located on the rotation centerline of the blade shaft. In Fig. 10, six blades form a spiral, and there are multiple spirals on the cutter shaft. During implementation, the specific number of blades in a spiral and the number of spirals of the blades on the cutter shaft can be determined according to actual needs.

The stubble crushing device for crops shown in Fig. 12 and Fig. 13 comprises a cutter shaft 4 and a plurality of blades 11 evenly spaced along the axis of the cutter shaft. A knife tooth with an arc-shaped blade, a mounting hole is arranged in the center of the disc cutter body, the blade is installed on the cutter shaft 4 through the mounting hole, the center of the mounting hole coincides with the rotation center of the blade, and the rotation center of the blade is on the blade 2 The distance between each point gradually increases from the root of the blade to the end of the blade, and the teeth of the corresponding blades at the installation positions along the axial direction of the cutter shaft are staggered by 60° in the circumferential direction, and the rotation centers of all blades on the cutter shaft They are all located on the rotation centerline of the cutter shaft. In actual implementation, the cutter teeth on the cutter body can also be one or two. As shown in Figure 14 and Figure 15, a crushing device with an arc-shaped cutter blade 12 is installed, and the structure of the blade 12 is the same as that shown in Figure 5 In addition, when the blades are installed, the staggered angles of the blades are not limited to 60°, and the angles can be set as required.

In the crop root stubble crushing devices of the above-mentioned various structures, the blades on the blades all face the rotation direction of the cutter shaft, the plane where the blades are located is perpendicular to the axis of the cutter shaft, and the arc of the blades is preferably an involute or a base. Mead spiral; in addition, the arrangement of the blades is not limited to this, as long as the root stubble crushing effect is good, the force of the crushing device is balanced, and the movement is stable.

When the crop stubble crushing device is installed on the supporting tractor for crushing operations, the power of the tractor drives the tractor forward, and at the same time drives the cutter shaft to rotate in the same direction or in the opposite direction to the tractor wheel, and the rotating cutter shaft takes the blades to move away The blade rotates in the direction of the blade tip, and the blade cuts off the ground debris, straw stubble and underground root system on the blade trace to complete the crushing process. By adjusting the position of the blade on the cutter shaft, the track spacing of the blade can be adjusted, and then the shredding effect of the crushing device can be adjusted. Shown in Fig. 6 is the state diagram of the crop stubble crushing device when it is installed and used. One end of the cutter shaft 4 is equipped with a pulley driven by tractor power, and a cover body 13 is also arranged on the periphery of the blade.

Claims (10)

1. The crop root stubble crushing blade is characterized in that: when the blade is fixedly installed on the rotatable cutter shaft, the plane where the blade is located is perpendicular to the cutter shaft, the blade on the blade faces the rotation direction of the cutter shaft, and the rotation center of the blade The distances to points on the blade gradually increase from the root of the blade to the tip of the blade. 2. The crop stubble crushing blade according to claim 1, characterized in that: the blade cutter body is arc-shaped, the blade is arranged on the convex edge of the arc-shaped cutter body, and the cutter body at the root of the blade is provided with a Mounting part for cutter shaft connection. 3. The crop stubble crushing blade according to claim 1, characterized in that: the blade cutter body is disc-shaped, at least one tooth with a convex arc-shaped blade is provided on the circumference of the cutter body, and the disc cutter body The central part of the blade is installed together with the cutter shaft through a mounting hole, and the center of the mounting hole coincides with the rotation center of the blade. 4. The crop stubble crushing blade according to claim 2 or 3, characterized in that: the arc of the blade is an involute or an Archimedes spiral. 5. The crop root stubble crushing device is characterized in that: it includes a cutter shaft that can be driven by power to rotate and blades arranged at intervals along the direction of the cutter shaft. Direction, the distance from the center of rotation of each blade to each point on the blade edge gradually increases from the root of the blade to the end of the blade. 6. The stubble crushing device for crops according to claim 5, characterized in that: the blade cutter body is arc-shaped, the blade is arranged on the convex edge of the arc-shaped cutter body, and the cutter body at the root of the blade is provided with a In the installation part where the cutter shaft is connected, the blades are evenly distributed in a spiral manner on the axial surface of the cutter shaft along the axial direction of the cutter shaft. 7. The stubble crushing device for crops according to claim 5, characterized in that: the blade cutter body is arc-shaped, the blade is arranged on the convex edge of the arc-shaped cutter body, and the cutter body at the root of the blade is provided with a In the installation part where the cutter shaft is connected, 2-4 blades are evenly distributed along the circumferential direction on the same cross section of the cutter shaft. 8. The crop stubble crushing device according to claim 5, characterized in that: the blade cutter body is disc-shaped, at least one tooth with a convex arc-shaped blade is provided on the circumference of the cutter body, and the disc cutter body The central part of the blade is installed together with the cutter shaft through a mounting hole, and the center of the mounting hole coincides with the rotation center of the blade. 9. The stubble crushing device for crops according to claim 8, characterized in that: the teeth of the corresponding blades at the installation positions of the blades along the axial direction of the cutter shaft on the cutter shaft are sequentially staggered by a set angle in the circumferential direction. 10. The crop stubble crushing device according to any one of claims 6-9, wherein the blade arc is an involute or an Archimedes spiral.

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