Cutter head of ditcher

Abstract

The utility model belongs to the technical field of ditcher accessories, and particularly relates to a ditcher cutterhead which comprises a cutterhead body and a rotary blade. A plurality of mounting hole groups for mounting the rotary blades are formed in the cutter head, the plurality of mounting hole groups are uniformly arranged along the circumference of the cutter head, each mounting hole group comprises three first mounting holes, and the three first mounting holes are triangularly arranged. Each rotary blade is a long-strip-shaped bent blade body, the bending angle of each rotary blade body is 90-150 degrees, the rotary blades are obliquely arranged on the edge of the cutter disc, the multiple rotary blades are alternately installed on the two sides of the cutter disc, second installation holes are formed in the tails of the rotary blades, and the rotary blades are fixed to the cutter disc through cooperation of first bolts and first nuts. A reinforcing mechanism is arranged at the joint of the rotary blade and the cutter head. The rotary blades are directly fixed to the edge of the cutter head through the first mounting holes formed in the triangular mode, the rotary blades can be prevented from making contact with a traditional tool apron to be broken when bearing external force while mounting is stable, and the connection strength between the rotary blades and the cutter head is improved through the arrangement of the reinforcing mechanism.

Description

Technical Field

[0001] This utility model belongs to the technical field of trenching machine accessories, and in particular relates to a trenching machine cutter disc. Background Technology

[0002] With the continuous advancement of technology, the increasing mechanization of agriculture, and the rising living standards of farmers, large rotary tillers are now almost universally used for plowing and turning the soil in rural areas. Rotary tillers are agricultural machinery that work in conjunction with tractors to perform plowing and harrowing operations. They are characterized by their strong soil-breaking ability and the ability to flatten the soil surface after plowing. They can also chop up stubble buried below the surface, making it easier for seeders to operate and providing a good seedbed for later sowing.

[0003] However, in remote mountain villages with significant elevation changes, the terrain is often rocky and overgrown with vegetation. Rotary tillage blades are easily entangled in the grass, and are prone to breakage or wear from soil and rocks. Current rotary tillage blades are typically fixed to the cutter head via a blade holder. While the blade holder increases the stability of the connection between the blade and the cutter head, the contact point between the blade holder and the blade actually makes the blade more susceptible to breakage under external force. Therefore, we need a new type of ditcher cutter head to replace the existing one and address the pain points and difficulties of current technology. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies and provide a trenching machine cutter disc that is structurally robust and not easily broken.

[0005] The objective of this utility model is achieved through the following technical solutions:

[0006] A ditching machine cutterhead, characterized in that it comprises a cutterhead and rotary tillage blades;

[0007] The cutter head has multiple sets of mounting holes for mounting rotary tillers. The multiple sets of mounting holes are evenly arranged along the circumference of the cutter head. Each set of mounting holes includes three first mounting holes, which are arranged in a triangular pattern.

[0008] The rotary tiller blade is a long, curved blade with a bending angle of 90-150 degrees. The rotary tiller blade is inclined and set on the edge of the blade disc. Multiple rotary tiller blades are alternately installed on both sides of the blade disc. The tail of the rotary tiller blade is provided with a second mounting hole that mates with the first mounting hole. It also includes a first bolt and a first nut. The rotary tiller blade is fixed on the blade disc by the first bolt, the first nut and the first mounting hole and the second mounting hole.

[0009] Based on the above structure, the rotary tiller blades are directly fixed to the edge of the blade disc through three triangularly arranged first mounting holes, which not only ensures stable installation but also prevents the rotary tiller blades from contacting the blade holder and breaking.

[0010] Preferably, the three first mounting holes of this utility model are arranged in an isosceles triangle, with one first mounting hole located at the edge of the cutter head, and the other two first mounting holes symmetrically arranged on both sides of it and closer to the center of the cutter head.

[0011] Preferably, the rotary tiller blade and the blade disc of this invention are provided with a reinforcing mechanism; the reinforcing mechanism includes a hollow tube with an opening at one end, a tension spring fixed inside the hollow tube, and a pull rod coaxial with and telescopically connected to the hollow tube. One end of the pull rod is fixedly connected to the tension spring, and the other end of the pull rod is provided with a third mounting hole. The rotary tiller blade is provided with a fourth mounting hole that mates with the third mounting hole. The mechanism also includes a second bolt and a second nut. One end of the pull rod is fixed to the rotary tiller blade through the cooperation of the second bolt, the second nut, the third mounting hole, and the fourth mounting hole. The hollow tube is provided with a fifth mounting hole, and the blade disc is provided with a sixth mounting hole that mates with the fifth mounting hole. The mechanism also includes a third bolt and a third nut. The bottom of the hollow tube is fixed to the blade disc through the cooperation of the third bolt, the third nut, the fifth mounting hole, and the sixth mounting hole. An angle is provided between the hollow tube and the rotary tiller blade.

[0012] Preferably, the hollow tube opening of the present invention is provided with an annular baffle, the outer diameter of the annular baffle is equal to the outer diameter of the hollow tube, and a circular baffle is provided at the end of the pull rod connected to the tension spring. The circular baffle is located inside the hollow tube, and the diameter of the circular baffle is larger than the inner diameter of the annular baffle and slightly smaller than the inner diameter of the hollow tube.

[0013] Preferably, the pull rod and the circular baffle of this invention are integrally formed.

[0014] Preferably, the outer diameter of the pull rod of this invention is slightly smaller than the inner diameter of the hollow tube.

[0015] Preferably, the reinforcing mechanism of this utility model is two, which are respectively arranged on the left and right sides of the rotary tiller blade.

[0016] Compared with the prior art, this utility model has the following features and beneficial effects:

[0017] 1. The rotary tiller blades are directly fixed to the edge of the blade disc through the three triangularly set first mounting holes. This ensures stable installation and prevents the rotary tiller blades from breaking when they come into contact with the traditional blade holder under external force.

[0018] 2. The isosceles triangle is positioned in the first mounting hole, which improves the installation stability of the rotary tiller blade.

[0019] 3. The reinforced mechanism increases the connection strength between the rotary tiller blades and the blade disc. When the rotary tiller blades are subjected to greater force during tilling, the tie rod and the hollow tube are connected by a tension spring, which can buffer the external force to a certain extent and prevent the reinforced mechanism from breaking when the force is too great. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of Embodiment 1 of the present utility model.

[0021] Figure 2 This is a schematic diagram of the cutter head structure according to Embodiment 1 of this utility model.

[0022] Figure 3 This is a schematic diagram of the rotary tillage blade structure in Embodiment 1 of this utility model.

[0023] Figure 4 This is a schematic diagram of the structure of Embodiment 2 of this utility model.

[0024] Figure 5 These are schematic diagrams of the cutter head structure in Embodiments 2 and 3 of this utility model.

[0025] Figure 6 These are schematic diagrams of the rotary tillage blades in Embodiments 2 and 3 of this utility model.

[0026] Figure 7 This is a cross-sectional view of the reinforcing mechanism in Embodiment 2 of this utility model.

[0027] Figure 8 This is a schematic diagram of the structure of Embodiment 3 of this utility model.

[0028] Figure 9 This is a cross-sectional view of the reinforcing mechanism in Embodiment 3 of this utility model.

[0029] In the diagram: 1. Cutter head; 2. Rotary tiller blade; 3. First mounting hole; 4. Second mounting hole; 5. Hollow tube; 6. Tension spring; 7. Pull rod; 8. Third mounting hole; 9. Fourth mounting hole; 10. Fifth mounting hole; 11. Sixth mounting hole; 12. Circular baffle; 13. Circular baffle. Detailed Implementation

[0030] The present invention will now be described in further detail with reference to the accompanying drawings. Example

[0031] like Figure 1-3 As shown, a ditching machine cutterhead is characterized by comprising a cutterhead 1 and rotary tillage blades 2. The cutterhead 1 has multiple sets of mounting holes for mounting the rotary tillage blades 2, the sets of mounting holes being evenly arranged along the circumference of the cutterhead 1. Each set of mounting holes includes three first mounting holes 3, which are arranged in a triangular pattern.

[0032] The rotary tiller blade 2 is a long, curved blade with a bending angle of 90-150 degrees. The rotary tiller blade 2 is inclinedly positioned at the edge of the blade disc 1. Multiple rotary tiller blades 2 are alternately installed on both sides of the blade disc 1. Each rotary tiller blade 2 has a second mounting hole 4 at its tail end that mates with the first mounting hole 3. It also includes a first bolt and a first nut. The rotary tiller blade 2 is fixed to the blade disc 1 by the engagement of the first bolt, the first nut, and the first and second mounting holes. The rotary tiller blade 2 is directly fixed to the edge of the blade disc 1 through the three triangularly arranged first mounting holes 3, ensuring stable installation and preventing the rotary tiller blade 2 from contacting with a traditional blade holder and breaking.

[0033] The three first mounting holes 3 are arranged in an isosceles triangle, with one first mounting hole 3 located at the edge of the cutter head 1, and the other two first mounting holes 3 symmetrically located on both sides of it and closer to the center of the cutter head 1. The isosceles triangle arrangement of the first mounting holes 3 improves the installation stability of the rotary tiller blades 2. Example

[0034] like Figure 4-7 As shown, a ditching machine cutterhead is characterized by comprising a cutterhead 1 and rotary tillage blades 2. The cutterhead 1 has multiple sets of mounting holes for mounting the rotary tillage blades 2, the sets of mounting holes being evenly arranged along the circumference of the cutterhead 1. Each set of mounting holes includes three first mounting holes 3, which are arranged in a triangular pattern.

[0035] The rotary tiller blade 2 is a long, curved blade with a bending angle of 90-150 degrees. The rotary tiller blade 2 is inclinedly positioned at the edge of the blade disc 1. Multiple rotary tiller blades 2 are alternately installed on both sides of the blade disc 1. Each rotary tiller blade 2 has a second mounting hole 4 at its tail end that mates with the first mounting hole 3. It also includes a first bolt and a first nut. The rotary tiller blade 2 is fixed to the blade disc 1 by the engagement of the first bolt, the first nut, and the first and second mounting holes. The rotary tiller blade 2 is directly fixed to the edge of the blade disc 1 through the three triangularly arranged first mounting holes 3, ensuring stable installation and preventing the rotary tiller blade 2 from contacting with a traditional blade holder and breaking.

[0036] The three first mounting holes 3 are arranged in an isosceles triangle, with one first mounting hole 3 located at the edge of the cutter head 1, and the other two first mounting holes 3 symmetrically located on both sides of it and closer to the center of the cutter head 1. The isosceles triangle arrangement of the first mounting holes 3 improves the installation stability of the rotary tiller blades 2.

[0037] The rotary tiller blade 2 is provided with a reinforcing mechanism at the connection between it and the blade disc 1. Preferably, there are two reinforcing mechanisms, which are respectively arranged on the left and right sides of the rotary tiller blade 2. The reinforcing mechanism includes a hollow tube 5 with an opening at one end, a tension spring 6 fixed inside the hollow tube 5, and a pull rod 7 coaxial with and telescopically connected to the hollow tube 5. One end of the pull rod 7 is fixedly connected to the tension spring 5, and the other end of the pull rod 7 has a third mounting hole 8. The rotary tiller 2 has a fourth mounting hole 9 that mates with the third mounting hole 8. The mechanism also includes a second bolt and a second nut. One end of the pull rod 7 is fixed to the rotary tiller 2 by the cooperation of the second bolt, the second nut, the third mounting hole 8, and the fourth mounting hole 9. The bottom of the hollow tube 5 has a fifth mounting hole 10, and the blade disc 1 has a sixth mounting hole 11 that mates with the fifth mounting hole 10. The mechanism also includes a third bolt and a third nut. The bottom of the hollow tube 5 is fixed to the blade disc 1 by the cooperation of the third bolt, the third nut, the fifth mounting hole 10, and the sixth mounting hole 11. An angle is formed between the hollow tube 5 and the rotary tiller 2.

[0038] The reinforced mechanism increases the connection strength between the rotary tiller blade 2 and the blade disc 1. When the rotary tiller blade 2 is subjected to a large force during tillage, the pull rod 7 and the hollow tube 5 are connected by a tension spring 6, which can buffer the external force to a certain extent and prevent the reinforced mechanism from breaking when the force is too large.

[0039] The hollow tube 5 has an annular baffle 12 at its opening, the outer diameter of which is equal to the outer diameter of the hollow tube 5. The end of the pull rod 7 connected to the tension spring has a circular baffle 13, which is integrally formed with the pull rod 7. The circular baffle 13 is located inside the hollow tube 5, and its diameter is larger than the inner diameter of the annular baffle 12 but slightly smaller than the inner diameter of the hollow tube 5. The circular baffle 13 and the annular baffle 12 prevent the pull rod 7 from falling out of the hollow tube 5. Example

[0040] like Figure 5 , Figure 6 , Figure 8 , Figure 9 As shown, a ditching machine cutterhead is characterized by comprising a cutterhead 1 and rotary tillage blades 2. The cutterhead 1 has multiple sets of mounting holes for mounting the rotary tillage blades 2, the sets of mounting holes being evenly arranged along the circumference of the cutterhead 1. Each set of mounting holes includes three first mounting holes 3, which are arranged in a triangular pattern.

[0041] The rotary tiller blade 2 is a long, curved blade with a bending angle of 90-150 degrees. The rotary tiller blade 2 is inclinedly positioned at the edge of the blade disc 1. Multiple rotary tiller blades 2 are alternately installed on both sides of the blade disc 1. Each rotary tiller blade 2 has a second mounting hole 4 at its tail end that mates with the first mounting hole 3. It also includes a first bolt and a first nut. The rotary tiller blade 2 is fixed to the blade disc 1 by the engagement of the first bolt, the first nut, and the first and second mounting holes. The rotary tiller blade 2 is directly fixed to the edge of the blade disc 1 through the three triangularly arranged first mounting holes 3, ensuring stable installation and preventing the rotary tiller blade 2 from contacting with a traditional blade holder and breaking.

[0042] The three first mounting holes 3 are arranged in an isosceles triangle, with one first mounting hole 3 located at the edge of the cutter head 1, and the other two first mounting holes 3 symmetrically located on both sides of it and closer to the center of the cutter head 1. The isosceles triangle arrangement of the first mounting holes 3 improves the installation stability of the rotary tiller blades 2.

[0043] The rotary tiller blade 2 is provided with a reinforcing mechanism at the connection between it and the blade disc 1. Preferably, there are two reinforcing mechanisms, which are respectively arranged on the left and right sides of the rotary tiller blade 2. The reinforcing mechanism includes a hollow tube 5 with an opening at one end, a tension spring 6 fixed inside the hollow tube 5, and a pull rod 7 coaxial with and telescopically connected to the hollow tube 5. The outer diameter of the pull rod 7 is slightly smaller than the inner diameter of the hollow tube 5. One end of the pull rod 7 is fixedly connected to the tension spring 5, and the other end of the pull rod 7 has a third mounting hole 8. The rotary tiller 2 has a fourth mounting hole 9 that mates with the third mounting hole 8. The mechanism also includes a second bolt and a second nut. One end of the pull rod 7 is fixed to the rotary tiller 2 by the cooperation of the second bolt, the second nut, the third mounting hole 8, and the fourth mounting hole 9. The bottom of the hollow tube 5 has a fifth mounting hole 10, and the blade disc 1 has a sixth mounting hole 11 that mates with the fifth mounting hole 10. The mechanism also includes a third bolt and a third nut. The bottom of the hollow tube 5 is fixed to the blade disc 1 by the cooperation of the third bolt, the third nut, the fifth mounting hole 10, and the sixth mounting hole 11. An angle is formed between the hollow tube 5 and the rotary tiller 2.

[0044] The reinforced mechanism increases the connection strength between the rotary tiller blade 2 and the blade disc 1. When the rotary tiller blade 2 is subjected to a large force during tillage, the pull rod 7 and the hollow tube 5 are connected by a tension spring 6, which can buffer the external force to a certain extent and prevent the reinforced mechanism from breaking when the force is too large.

[0045] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.

Claims

1. A trenching machine cutter disc, characterized in that: Includes blades and rotary tillers; The cutter head has multiple sets of mounting holes for mounting rotary tillers. The multiple sets of mounting holes are evenly arranged along the circumference of the cutter head. Each set of mounting holes includes three first mounting holes, which are arranged in a triangular pattern. The rotary tiller blade is a long, curved blade with a bending angle of 90-150 degrees. The rotary tiller blade is inclined and set on the edge of the blade disc. Multiple rotary tiller blades are alternately installed on both sides of the blade disc. The tail of the rotary tiller blade is provided with a second mounting hole that mates with the first mounting hole. It also includes a first bolt and a first nut. The rotary tiller blade is fixed on the blade disc by the cooperation of the first bolt, the first nut and the first mounting hole and the second mounting hole.

2. The trencher cutter head according to claim 1, characterized in that: The three first mounting holes are arranged in an isosceles triangle, with one first mounting hole located at the edge of the cutter head and the other two first mounting holes symmetrically located on both sides of it and closer to the center of the cutter head.

3. The trenching machine cutter head according to claim 1 or 2, characterized in that: The rotary tiller blade is connected to the blade disc with a reinforcing mechanism. The reinforcing mechanism includes a hollow tube with an opening at one end, a tension spring fixed inside the hollow tube, and a pull rod coaxial with and telescopically connected to the hollow tube. One end of the pull rod is fixedly connected to the tension spring, and the other end of the pull rod has a third mounting hole. The rotary tiller blade has a fourth mounting hole that mates with the third mounting hole. The mechanism also includes a second bolt and a second nut. One end of the pull rod is fixed to the rotary tiller blade by the cooperation of the second bolt, the second nut, the third mounting hole, and the fourth mounting hole. The bottom of the hollow tube has a fifth mounting hole, and the blade disc has a sixth mounting hole that mates with the fifth mounting hole. The mechanism also includes a third bolt and a third nut. The bottom of the hollow tube is fixed to the blade disc by the cooperation of the third bolt, the third nut, the fifth mounting hole, and the sixth mounting hole. An angle is formed between the hollow tube and the rotary tiller blade.

4. The trencher cutter head according to claim 3, characterized in that: The hollow tube opening is provided with an annular baffle, the outer diameter of which is equal to the outer diameter of the hollow tube. The end of the pull rod connected to the tension spring is provided with a circular baffle, which is located inside the hollow tube. The diameter of the circular baffle is larger than the inner diameter of the annular baffle and slightly smaller than the inner diameter of the hollow tube.

5. The trencher cutter head according to claim 4, characterized in that: The pull rod and the circular baffle are integrally formed.

6. The trencher cutter head according to claim 3, characterized in that: The outer diameter of the tie rod is slightly smaller than the inner diameter of the hollow tube.

7. The trencher cutter head according to claim 3, characterized in that: There are two reinforcing mechanisms, which are respectively located on the left and right sides of the rotary tiller blade.

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