Spiral cutter of deep ploughing machine

Abstract

The utility model discloses a spiral cutter of a deep ploughing machine, which belongs to the technical field of deep ploughing machines and comprises a spiral blade fixed on a spiral shaft, a plurality of cutter holder mounting notches are arranged at the edge of the spiral blade, cutter holders are welded on the cutter holder mounting notches, cutters are connected in the cutter holders, and the cutter holders are fixedly connected with the cutters through cutter fixing bolts. The cutter comprises a mounting part and a cutter main body; a tool mounting opening is formed in the bottom surface of the tool apron, the tool fixing surface of the tool mounting opening is a plane, and the tool mounting opening is as wide as the mounting part; the surface of the mounting part is a plane, and the mounting part can be directly buckled in the cutter mounting opening. The cutter fixing surface and the surface of the mounting part are designed into planes, so that the cutter can be conveniently machined, and the cutter and the cutter holder are firmly mounted; the mounting part is consistent with the cutter mounting opening in width and can limit the cutter to ensure the stability of the cutter; the cutter is arranged in the cutter holder, so that the parts of the cutter holder and the cutter protruding out of the surface of the spiral blade can be reduced, and the operation resistance is reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of deep tillage machines, and in particular relates to a spiral cutter for a deep tillage machine. Background Art

[0002] The statements in this section merely provide background technical information related to the present invention and do not necessarily constitute prior art.

[0003] A spiral deep tiller is a special agricultural machine used for deep tillage of the land. It uses a tool fixed on the spiral blade to drive the spiral blade to rotate and cut the soil.

[0004] In the prior art, the spiral blade is usually directly connected to the tool bolt. For example, patent CN208874779U discloses a deep tillage tool for preventing plant roots from being entangled, including a tool body arranged on the deep tillage tool. The tool body includes a rotating shaft and a spiral blade fixedly arranged on the surface of the rotating shaft, and a plurality of knife grains are arranged on the edge of the spiral blade.

[0005] This traditional deep tiller tool has a curved surface on the fixed part and is mounted on the spiral blade with two bolts. This has the following disadvantages:

[0006] 1) Since the surface of the spiral blade is a complex spatial curved surface, it is difficult to make the surface of the fixed part of the tool consistent with the surface of the spiral blade during tool processing, which makes processing difficult;

[0007] 2) It is difficult for the surface of the spiral blade to fit tightly with the surface of the tool fixing part, resulting in loose fixation. Even if the tool is installed with two bolts, it is easy to loosen, and the bolts need to be tightened frequently, which reduces work efficiency.

[0008] 3) The holes for installing the fixing bolts of the spiral blades will be deformed during processing, affecting the smooth installation of the bolts;

[0009] 4) The cutter protrudes from the surface of the spiral blade, which increases the contact area with the soil when plowing the land, resulting in greater resistance. Utility Model Content

[0010] In response to the above problems, the utility model provides a deep tiller spiral cutter, which can not only facilitate the processing of the cutter, but also ensure that the cutter and the spiral blade are installed tightly and firmly, which can greatly reduce the resistance during operation. The cutter is stably installed without the need for repeated tightening of bolts, and the work efficiency is high.

[0011] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0012] A deep tiller spiral cutter comprises a spiral blade fixed on a spiral shaft, a plurality of cutter seat mounting notches are provided at the edge of the spiral blade, a cutter seat is welded on the cutter seat mounting notches, a cutter is connected inside the cutter seat, and the cutter seat and the cutter are fixedly connected by a cutter fixing bolt; the cutter comprises a mounting part and a cutter body; a cutter mounting opening is provided on the bottom surface of the cutter seat, and there are three flat cutter fixing surfaces on the cutter mounting opening, and the width of the cutter mounting opening is consistent with the width of the cutter mounting part; the surface of the mounting part is flat, and the mounting part can be directly snapped into the cutter mounting opening.

[0013] Preferably, a flange is provided on the top of the spiral shaft for connecting to the output end; both side surfaces of the tool holder mounting notch have a certain angle and are parallel.

[0014] Preferably, the shape of the knife seat is an inverted "treasure cover", and the upper surface of the knife seat is opposite to the tool installation port; the knife seat also includes two knife seat side surfaces, and arc corners are provided at the connection between the knife seat side surfaces and the upper surface.

[0015] Preferably, when the tool holder is welded to the tool holder mounting notch, the upper surface faces the flange.

[0016] Preferably, the side surface of the tool holder is an inclined plane, the inclination angle is consistent with the angles of the two side surfaces of the tool holder installation notch, and the two tool holder side surfaces are parallel.

[0017] Preferably, the upper surface is a plane rather than a curved surface, a bolt mounting hole is provided at the center of the upper surface, and a similar bolt mounting hole is also provided at a corresponding position of the mounting portion.

[0018] Preferably, the tool fixing bolts pass through the bolt mounting holes on the upper surface and the mounting portion in sequence and are tightened to securely mount the tool on the tool holder.

[0019] Preferably, the dimensions of the tool holder in all directions are smaller than the tool holder installation notch.

[0020] Compared with the prior art, the advantages and positive effects of this utility model are:

[0021] 1) The utility model is designed to have the left and right side surfaces of the tool holder coincide with the side surfaces of the tool holder installation notch, and the tool fixing surface where the tool holder and tool fit together is designed to be a flat surface rather than a curved surface. The surface of the tool installation portion is also designed to be flat, which not only facilitates the processing of the tool but also ensures that the tool and tool holder are tightly and firmly installed.

[0022] 2) The utility model designs a curved corner between the side surface and the upper surface of the blade holder, which can reduce the resistance caused by the curved shape of the spiral blade during operation, resulting in a small portion of the upper surface protruding from the spiral blade;

[0023] 3) The present invention ensures that the width of the tool mounting portion is consistent with the width of the tool mounting opening on the tool holder, so that the tool mounting opening provides a limit for the tool mounting portion. The tool can be stabilized by only one tool fixing bolt, eliminating the need for repeated tightening of the tool fixing bolt.

[0024] 4) The utility model also designs the upper surface of the tool holder to be flat, which can ensure that the tool fixing bolts are firmly installed;

[0025] 5) The utility model installs the cutter holder and the cutter on the spiral blade, so that the cutter and the cutter holder are hidden in the spiral blade, and the portion thereof protruding from the surface of the spiral blade is greatly reduced, thereby greatly reducing the resistance during operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The drawings in the specification, which constitute a part of the present invention, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention.

[0027] Figure 1 It is an overall schematic diagram of an embodiment of the utility model;

[0028] Figure 2 This is a schematic diagram of a knife holder according to an embodiment of the present utility model;

[0029] In the picture:

[0030] 1-Spiral shaft, 11-Flange, 2-Spiral blade, 3-Tool holder mounting notch, 4-Tool holder, 41-Tool mounting port, 42-Tool fixing surface, 43-Tool holder side, 44-Upper surface, 45-Bolt mounting hole, 46-Curved corner, 5-Tool, 51-Mounting part, 6-Tool fixing bolt. DETAILED DESCRIPTION

[0031] It should be noted that the following detailed descriptions are illustrative and intended to provide further explanation of the present invention. Unless otherwise specified, all technical and scientific terms used herein have the same meanings as those commonly understood by those skilled in the art to which the present invention belongs.

[0032] The present invention will be described in detail below with reference to the accompanying drawings. The present embodiment discloses a deep tiller spiral cutter, such as Figure 1 As shown, it includes a spiral blade 2 fixed on a spiral shaft 1, a plurality of tool holder mounting notches 3 are provided at the edge of the spiral blade 2, a tool holder 4 is welded on the tool holder mounting notches 3, a tool 5 is connected inside the tool holder 4, and the tool holder 4 and the tool 5 are fixedly connected by a tool fixing bolt 6.

[0033] In this embodiment, if Figure 1As shown, a flange 11 is provided on the top of the spiral shaft 1 for connecting to the output end; the tool 5 includes a mounting portion 51 and a tool body, the mounting portion 51 is fixedly connected to the tool body, and the mounting portion 51 is installed in the tool holder 4; Figure 1 As shown, a cutter seat installation notch 3 is directly cut and reserved at a corresponding position on the edge of the spiral blade 2. Both sides of the cutter seat installation notch 3 have a certain angle and are parallel to each other.

[0034] In this embodiment, if Figure 2 As shown, the shape of the tool holder 4 is an inverted "treasure cover", and a tool mounting opening 41 is provided on the bottom surface of the tool holder 4. The three tool fixing surfaces 42 of the tool mounting opening 41 are all flat, and the width of the tool mounting opening 41 is consistent with the width of the mounting portion 51 of the tool 5.

[0035] like Figure 1 As shown, the surface of the mounting portion 51 of the tool 5 is also designed to be flat, so that the mounting portion 51 of the tool 5 can be directly engaged in the tool mounting opening 41. It can be understood that designing the various tool fixing surfaces of the tool holder 4 and the surface of the mounting portion 51 of the tool 5 as flat rather than curved surfaces can not only facilitate tool processing, but also ensure that the tool and the tool holder are tightly and firmly mounted.

[0036] like Figure 2 As shown, the two side surfaces 43 of the tool holder 4 are inclined planes, the inclination angle is consistent with the two side angles of the tool holder installation notch 3, and the two side surfaces 43 of the tool holder are parallel. Such a design enables the tool holder 4 to be welded to the tool holder installation notch 3.

[0037] like Figure 2 As shown, the upper surface 44 of the tool holder 4 is a plane rather than a curved surface, and a curved corner 46 is provided between the upper surface 44 and the side surface 43 of the tool holder; the reason for this design is that, as shown in FIG. Figure 1 As shown, when the blade holder 4 is welded to the blade holder mounting notch 3, it is necessary to install the upper surface 44 toward the side of the flange 11; and since the spiral blade 2 is a spiral curved surface, a small portion of the upper surface 44 will protrude from the side of the spiral blade 2 facing the flange 11, which will increase a certain amount of resistance; therefore, an arc corner 46 is provided between the upper surface 44 and the blade holder side surface 43 to reduce the resistance of the soil during operation.

[0038] like Figure 1 、 Figure 2 As shown, a bolt mounting hole 45 is provided at the center of the upper surface 44, and a similar bolt mounting hole 45 is also provided at the corresponding position of the mounting portion 51 of the tool 5; the tool fixing bolt 6 is passed through the bolt mounting holes 45 on the upper surface 44 and the mounting portion 51 in sequence, and then the tool fixing bolt 6 is tightened, thereby firmly mounting the tool 5 on the tool holder 4.

[0039] In this embodiment, if Figure 1 、 Figure 2 As shown, the tool 5 is installed on the tool holder 4 by the tool fixing bolt 6. Since the installation part 51 of the tool 5 is engaged in the tool installation opening 41, during operation, the tool installation opening 41 can withstand the resistance transmitted by the tool 5, is very firm and difficult to loosen, and can provide a limit for the tool 5, ensuring that the tool 5 can be stably installed by a tool fixing bolt 6, without the need to repeatedly tighten the tool fixing bolt.

[0040] In this embodiment, the upper surface 44 of the tool holder 4 is also designed to be flat in order to ensure that the tool fixing bolt 6 is securely installed.

[0041] In this embodiment, the dimensions of the blade holder 4 in all directions are smaller than the blade holder installation notch 3. This is because a certain gap is required between the blade holder 4 and the blade holder installation notch 3 on each side so that the two can be firmly welded.

[0042] In this embodiment, through the above-mentioned design and installation, the portion of the cutter seat 4 and the cutter 5 protruding from the surface of the spiral blade 2 can be greatly reduced, which can greatly reduce the resistance encountered by the soil during operation.

[0043] Although the above description of the specific implementation methods of the present invention is combined with the accompanying drawings, it does not limit the scope of protection of the present invention. Technical personnel in the relevant field should understand that on the basis of the technical solution of the present invention, various modifications or deformations that can be made by technical personnel in this field without creative work are still within the scope of protection of the present invention.

Claims

1. A spiral cutter for a deep tillage machine, characterized in that: It includes a spiral blade fixed on a spiral shaft, and several tool holder mounting notches are provided at the edge of the spiral blade. Tool holders are welded on the tool holder mounting notches, and a tool is connected inside the tool holder. The tool holder and the tool are fixedly connected by tool fixing bolts; the tool includes a mounting part and a tool body; a tool mounting opening is provided on the bottom surface of the tool holder, and there are three flat tool fixing surfaces on the tool mounting opening, and the width of the tool mounting opening is consistent with the width of the tool mounting part; the surface of the mounting part is flat, and the mounting part can be directly snapped into the tool mounting opening.

2. A deep tiller spiral cutter according to claim 1, characterized in that: A flange is provided on the top of the spiral shaft for connecting to the output end; both side surfaces of the tool holder mounting notch have a certain angle and are parallel.

3. The spiral cutter for a deep tiller according to claim 1, characterized in that: The shape of the knife seat is an inverted "treasure cover", and the upper surface of the knife seat is opposite to the tool installation port; the knife seat also includes two knife seat side surfaces, and arc corners are provided at the connection between the knife seat side surfaces and the upper surface.

4. A spiral cutter for a deep tiller according to claim 3, characterized in that: When the knife seat is welded to the knife seat installation notch, the upper surface faces the flange.

5. The spiral cutter for a deep tillage machine according to claim 3, characterized in that: The side surface of the tool holder is an inclined plane, the inclination angle is consistent with the angles of the two side surfaces of the tool holder installation notch, and the two side surfaces of the tool holder are parallel.

6. The spiral cutter for a deep tiller according to claim 3, characterized in that: The upper surface is a plane rather than a curved surface, and a bolt mounting hole is provided at the center of the upper surface. The same bolt mounting hole is also provided at the corresponding position of the mounting portion.

7. A spiral cutter for a deep tiller according to claim 6, characterized in that: The tool fixing bolts pass through the bolt mounting holes on the upper surface and the mounting portion in sequence and are tightened, so that the tool is firmly mounted on the tool holder.

8. The spiral cutter for a deep tiller according to claim 1, characterized in that: The dimensions of the knife seat in all directions are smaller than the knife seat installation notch.

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