A furrower cutterhead applied to a double-output shaft indexing box

Abstract

The utility model relates to a ditcher cutter head applied to double-output shaft indexing box, including tool rest disc and blade, the tool rest disc is installed on the drive shaft, be arranged with the connection extension body on the tool rest disc, the connection extension body is away from the disc surface direction of the tool rest disc and extends, one end of the blade is fixed in the extension end of the connection extension body, when starting the double cutter head ditcher, the double cutter head rotates, makes the blade far away from the box of indexing box close, further makes the ditching width of double cutter head as narrow as possible, makes the soil far away from the frame below between two groups of cutter heads and be thrown out, avoids the soil gathering in the frame below between two groups of cutter heads, makes the double cutter head ditcher ditching operation smaller resistance, is fit for the use scene of small horse power double cutter head ditching.

Description

Technical Field

[0001] This utility model relates to the field of agricultural machinery technology, specifically a trencher cutter disc applied to a dual-output shaft indexing box. Background Technology

[0002] Ditching machines used in agricultural production are widely used for ditching operations in wheat or rice fields. Existing double-disc ditching machines are generally used with high-horsepower tractors (over 50 horsepower). The double-disc ditching machine is arranged at an angle to the vertical plane. The two sets of cutters are connected to the two output shafts of the transfer case via drive shafts. One end of the transfer case's output shaft is connected to the output shaft of the gearbox. The gearbox's input shaft can be connected to the tractor's output shaft via an outward shaft. When the tractor starts, the frame of the double-disc ditching machine is lowered, allowing the two sets of cutters to cut into the soil. As the tractor moves linearly, it drags the entire double-disc ditching machine linearly to achieve the ditching operation. However, when used with lower-horsepower tractors (less than 50 horsepower), existing double-disc ditching machines present certain problems. In existing trenchers with dual-output-shaft indexing boxes, the cutter blades are distributed circumferentially along the cutter holder, with the extended ends of the blades pointing towards the frame. As the cutter disc rotates, the cut soil accumulates below the frame where the two sets of cutter discs are located. This causes significant resistance to the tractor pressing down on the frame during trenching, especially in collapsible or compacted soil. This prevents the trencher from pressing down properly, making it impossible to effectively control the trenching width of the cutter disc in trenchers with dual-output-shaft indexing boxes, thus rendering the trencher unusable. Utility Model Content

[0003] In view of the shortcomings of the prior art, a trenching machine cutter head applied to a dual-output shaft indexing box is provided to solve the problem that soil in the trenching machine will accumulate at the position below the frame where the two sets of cutter heads are located, so as to achieve effective control of the trenching width of the trenching machine and ensure the normal trenching operation of the trenching machine.

[0004] To achieve the above-mentioned objectives and other related objectives, this utility model proposes... A trenching machine cutter head used in a dual-output shaft indexing box includes a cutter head and a blade. The cutter head is mounted on a drive shaft. A connecting extension is arranged on the cutter head, extending away from the surface of the cutter head. One end of the blade is fixed to the extension end of the connecting extension.

[0005] In one embodiment of this utility model, the blades are arranged in multiple sets at intervals along the circumferential direction of the blade holder.

[0006] In one embodiment of this utility model, the distance between one end of the blade and the surface of the blade holder is the same.

[0007] In one embodiment of this utility model, the distance between one end of the blade and the surface of the blade holder disk varies.

[0008] In one embodiment of this utility model, one end of the blade is detachably connected to the blade holder disc.

[0009] In one embodiment of the present invention, the other end of the blade extends away from the blade holder disc, and an extension portion is provided at the extended end of the blade, the extension portion being arranged away from the drive shaft.

[0010] In one embodiment of this utility model, the tool holder disk is generally disc-shaped, and a key tube for inserting and engaging with the drive shaft is provided at the center of the tool holder disk.

[0011] In one embodiment of this utility model, multiple sets of connecting extensions are arranged at intervals in the circumferential direction on the inner side of the tool holder disk connected to the drive shaft. The connecting extensions extend away from the disk surface of the tool holder disk, and the extension lengths of the multiple sets of connecting extensions are different. One end of the blade is fixed to the end of the connecting extension.

[0012] In one embodiment of the present invention, a blade holder box is provided at the end of the connecting extension, and one end of the blade is inserted into the blade holder box.

[0013] In one embodiment of this utility model, the blade holder box is generally rectangular in shape and is perpendicular to the connecting extension. One end of the blade is cuboid and inserted into the box of the blade holder box.

[0014] In one embodiment of the present invention, a fastening bolt is provided on the tool holder box, the fastening bolt passes through the tool holder box and one end of the blade in sequence, and the fastening bolt extends into the connecting extension body, and a fastening nut is provided at the protruding end of the fastening bolt.

[0015] By adopting the above technical solution, the technical effect of this utility model is as follows: The cutter head is installed on the output shaft of the double cutter head trencher. When the double cutter head trencher is started, the double cutter heads rotate, and the blades are installed at the extension part of the connecting extension body, so that the blades are close to the box body away from the indexing box, thereby making the trenching width of the double cutter head as narrow as possible, and making the soil away from the frame below the two sets of cutter heads and thrown out, avoiding the soil accumulation under the frame between the two sets of cutter heads. This makes the double cutter head trencher less resistant during trenching operation, and allows for more precise control of the actual trenching width and depth. In addition, the blades throw the excavated soil along the extension direction of the extension part, avoiding the accumulation of sticky soil on the retaining plate, which would cause the entire double cutter head trencher to be overloaded. This cutter head is very suitable for trenching applications of low-horsepower double cutter head trenchers. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a front view of the connection between the double-disc trencher and the tractor in one embodiment of the present invention; Figure 2 This is a front view of a double-blade trencher according to one embodiment of the present invention; Figure 3 This is a plan view of the assembly of the frame and the transfer case in one embodiment of the present invention; Figure 4 This is a schematic front view of the assembly of the transfer case and the cutter head in one embodiment of the present invention; Figure 5 This is a schematic diagram of the transfer case in one embodiment of the present invention; Figure 6 and Figure 7 This is a schematic diagram of two perspectives of the trenching cutter head applied to a dual-output shaft indexing box in one embodiment of the present invention. Figure 8 This is a schematic diagram of the structure of a trenching cutter head in a dual-output shaft indexing box according to another embodiment of the present invention; Figure 9 This is a front view of the trencher cutter head of the present invention applied in a dual-output shaft indexing box in one embodiment; Figure 10 and Figure 11 This is a schematic diagram of the tool holder disc from two different perspectives in one embodiment of the present invention; Figure 12 This is a front view of the tool holder disc in one embodiment of the present invention. Detailed Implementation

[0018] The following specific examples illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification. This utility model can also be implemented or applied through other different specific embodiments, and various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of this utility model.

[0019] It should be noted that the illustrations provided in this embodiment are only schematic representations of the basic concept of this utility model. Therefore, the drawings only show the components related to this utility model and are not drawn according to the actual number, shape and size of the components. In actual implementation, the form, quantity and proportion of each component can be arbitrarily changed, and the layout of the components may also be more complex.

[0020] Existing dual-disc trenchers have certain problems in use. Specifically, in existing trenchers with dual-output-shaft indexing boxes, the cutter blades are distributed circumferentially along the cutter holder, with the extended ends of the blades pointing towards the frame. As the cutter discs rotate, the cut soil accumulates below the frame where the two sets of cutter discs are located, causing significant resistance to the tractor's downward pressure on the frame during trenching, especially in collapsible or compacted soil. This prevents the trencher from pressing down properly, making it impossible to effectively control the trenching width and rendering the trencher unusable. To address this, a new trencher cutter disc for dual-output-shaft indexing boxes is proposed, comprising a cutter holder disc 10 and blades 20. The cutter holder disc 10 is mounted on a drive shaft 31, and a connecting extension 12 is arranged on the cutter holder disc 10, extending away from the disc surface. One end of the blade 20 is fixed to the extended end of the connecting extension 12.

[0021] See Figures 1 to 5 The double-blade trencher includes a frame 40, with a transfer case 30 located at the rear end of the frame 40. Two independent drive shafts 31 are mounted on the transfer case 30. The center of the blade holder 10 is mounted on the drive shaft 31. (See reference...) Figure 3 Inside the transfer case 30, there is a set of drive rods. At the end of the drive rods, there are two sets of drive bevel gears arranged at intervals. The rod ends of the two independent drive shafts 31 that extend into the transfer case 30 are equipped with driven bevel gears. The two sets of drive bevel gears mesh with the driven bevel gears respectively. Therefore, when the drive rods are under power, they can drive the two independent drive shafts 31 to rotate, thereby driving the cutter head to rotate.

[0022] A connecting extension body 12 is arranged on the cutter head disk 10. The connecting extension body 12 extends away from the disk surface of the cutter head disk 10, so that the cutter head disk 10 is as close as possible to the housing part of the transfer box 30. This makes the spacing between the double-blade trenchers smaller, thereby effectively controlling the trenching width, reducing trenching resistance, reducing soil accumulation under the frame 40, and avoiding excessive resistance of the double-blade trencher.

[0023] In one embodiment, the other end of the blade 20 extends away from the tool holder 10, and an extension 21 is provided at the extended end of the blade 20, the extension 21 being arranged away from the drive shaft 31.

[0024] In the above embodiment, the blade 20 is generally plate-shaped, and the blade 20 is parallel to the disk surface of the tool holder 10. The extension 21 of the blade 20's extension end forms a certain angle with the blade 20 and is arranged away from the disk surface of the tool holder 10 where the drive shaft 31 is located. The assembly relationship between the extension 21 of the blade 20 and the tool holder 10 can be understood as the extension 21 being in an outward flared state. (Refer to...) Figure 2 Therefore, when the tractor of the trencher starts, combined with Figure 1 The rotating arrow and the rotating blade holder 10 can throw soil away from the area below the frame 40. (See attached image.) Figure 2 The arrow in the middle keeps the soil from accumulating under the frame 40, avoiding excessive resistance of the double-blade trencher, so as to achieve precise control of the trenching depth. The blade 20 throws the excavated soil along the extension direction of the extension 21, avoiding sticky soil from accumulating on the retaining plate, which would cause the entire double-blade trencher to be overloaded and prevent small-horsepower tractors from stalling.

[0025] In one embodiment, the extension 21 and the blade 20 are at an angle, and the angle between the extension 21 and the blade 20 is preferably an obtuse angle.

[0026] In one embodiment, the blades 20 are arranged in multiple groups at intervals along the circumferential direction of the blade holder 10.

[0027] In one embodiment, see Figures 6 to 8 The blades 20 are distributed in 6 to 8 groups at equal angles along the circumferential direction of the blade holder disk 10.

[0028] In one embodiment, the distance between one end of the blade 20 and the surface of the blade holder 10 varies.

[0029] In the above embodiments, see Figure 9 The multiple sets of blades 20 are of the same size, and the multiple sets of blades 20 and the extensions 21 of the blades 20 are misaligned along the axial direction of the drive shaft. Therefore, it can ensure the trenching width of the entire trenching machine cutter head and ensure that the soil generated during the trenching process is thrown away from the frame 40.

[0030] In another embodiment, the multiple sets of blades 20 are of different sizes, and the angle between the extension 21 and the extension direction of the blades 20 is also different.

[0031] In another embodiment, the distance between one end of the blade 20 and the surface of the blade holder 10 is the same.

[0032] In one embodiment, one end of the blade 20 is detachably connected to the blade holder disk 10.

[0033] In the above embodiments, one end of the blade 20 can be installed on the outer or inner side of the blade holder disk 10.

[0034] In another embodiment, one end of the blade 20 is welded to the surface of the blade holder 10.

[0035] In the above embodiments, one end of the blade 20 can be welded to the inner or outer surface of the tool holder disk 10.

[0036] In one embodiment, see Figures 6 to 8 The tool holder disk 10 is generally disc-shaped, and a key tube 11 that is inserted into the center of the tool holder disk 10 to form an insertion fit with the drive shaft 31 is provided.

[0037] In the above embodiment, the drive shaft 31 is a spline shaft, which is inserted into the key tube 11, and a locking nut can be provided at the protruding end to fix the drive shaft 31 to the tool holder disk 10.

[0038] In one embodiment, see Figure 11 The connecting extension body 12 is arranged in multiple sets at intervals in the circumferential direction on the inner side of the blade holder disk 10 connected to the drive shaft 31, and the extension length of the multiple sets of connecting extension bodies 12 is different. One end of the blade 20 is fixed to the end of the connecting extension body 12.

[0039] In one embodiment, the connecting extension 12 can be tubular or rod-shaped. One end of the connecting extension 12 is welded to the inner surface of the tool holder disk 10, and the connecting extension 12 is perpendicular to the inner surface of the tool holder disk 10. The lengths of the connecting extension 12 are different. When one end of the multiple sets of blades 20 is fixed to one end of the connecting extension 12, the multiple sets of blades 20 are arranged in a staggered manner along the axial direction of the drive shaft 31.

[0040] In one embodiment, to enable quick installation of one end of the blade 20 to the connecting extension 12, a blade holder box 13 is provided at the end of the connecting extension 12, and one end of the blade 20 is inserted into the blade holder box 13.

[0041] In one embodiment, see Figure 11 The blade holder box 13 is generally rectangular in shape and is perpendicular to the connecting extension body 12. One end of the blade 20 is cuboid and is inserted into the box of the blade holder box 13.

[0042] In the above embodiment, the length direction of the tool holder box 13 is parallel to the radial direction of the tool holder disk 10, and one end of the blade 20 can be inserted into the box cavity of the tool holder box 13, so that the blade 20 can be arranged along the radial direction of the tool holder disk 10 as a whole, and the blade 20 cannot swing circumferentially under the limitation of the tool holder box 13.

[0043] In one embodiment, see Figure 6 and Figure 7 To fix the blade 20 to the tool holder box 13, a fastening bolt 14 is provided on the tool holder box 13. The fastening bolt 14 passes through the tool holder box 13 and one end of the blade 20 in sequence, and the fastening bolt 14 extends into the connecting extension body 12. A fastening nut 141 is provided at the protruding end of the fastening bolt 14.

[0044] See Figure 6 and Figure 11 A hexagonal through hole 131 is provided on the outer wall of the tool holder box 13, and the hexagonal cap of the fastening bolt 14 is located in the hexagonal through hole 131 of the tool holder box 13. The blade 20 is located in the tool holder box 13 with a through hole at one end. The fastening bolt 14 passes through the through hole and one end extends into the hole on the disc surface of the blade 20. A fastening nut 141 is provided on the fastening bolt 14. By tightening the fastening nut 141, the blade 20 can be fastened in the tool holder box 13.

[0045] In one embodiment, the cutter head 10 can be equipped with trenching blades 50. The blades 50 are plate-shaped and are fixed to the outer side of the cutter head 10 by fastening bolts and a housing. Two sets of trenching blades 50 are provided. When the cutter head rotates, the two sets of trenching blades 50 can effectively perform trenching operations.

[0046] The above description is only a preferred embodiment of this application and an explanation of the technical principles used. Those skilled in the art should understand that the scope involved in this application is not limited to the technical solutions formed by a specific combination of the above technical features, but should also cover other technical solutions formed by any combination of the above technical features or their equivalent features without departing from the inventive concept. For example, technical solutions formed by replacing the above features with (but not limited to) technical features with similar functions disclosed in this application.

[0047] Apart from the technical features described in the specification, the other technical features are known to those skilled in the art. To highlight the innovative features of this utility model, the other technical features will not be described in detail here.

Claims

1. A trenching machine cutter head used in a dual-output shaft indexing box, comprising a cutter holder disc (10) and cutting blades (20), wherein the cutter holder disc (10) is mounted on a drive shaft (31), characterized in that, A connecting extension (12) is arranged on the tool holder disk (10). The connecting extension (12) extends away from the disk surface of the tool holder disk (10), and one end of the blade (20) is fixed to the extension end of the connecting extension (12).

2. The trenching machine cutter head applied in a dual-output shaft indexing box according to claim 1, characterized in that: The blades (20) are arranged in multiple sets at intervals along the circumferential direction of the blade holder (10).

3. The trenching machine cutter head applied in a dual-output shaft indexing box according to claim 2, characterized in that: The distance between one end of the blade (20) and the surface of the blade holder (10) is the same.

4. The trenching machine cutter head applied in a dual-output shaft indexing box according to claim 2, characterized in that: The distance between one end of the blade (20) and the surface of the blade holder (10) varies.

5. The trenching machine cutter head applied in a dual-output shaft indexing box according to claim 2, characterized in that: One end of the blade (20) is detachably connected to the blade holder (10).

6. The trenching machine cutter head applied in a dual-output shaft indexing box according to claim 1, characterized in that: The other end of the blade (20) extends away from the tool holder (10), and an extension (21) is provided at the extended end of the blade (20), the extension (21) being arranged away from the drive shaft (31).

7. The trenching machine cutter head applied in a dual-output shaft indexing box according to claim 2, characterized in that: The tool holder disk (10) is generally disc-shaped, and the center of the tool holder disk (10) is provided with a key tube (11) that is inserted into the drive shaft (31) to form a plug-in fit.

8. The trenching machine cutter head applied in a dual-output shaft indexing box according to claim 1, characterized in that: Multiple sets of the connecting extension body (12) are arranged at intervals on the inner side of the tool holder disk (10) connected to the drive shaft (31) in the circumferential direction. A tool holder box (13) is provided at the end of the connecting extension body (12), and one end of the blade (20) is inserted into the tool holder box (13).

9. The trenching machine cutter head applied in a dual-output shaft indexing box according to claim 8, characterized in that: The blade holder box (13) is rectangular in shape and is perpendicular to the connecting extension (12). One end of the blade (20) is cuboid and inserted into the box of the blade holder box (13).

10. The trenching machine cutter head applied in a dual-output shaft indexing box according to claim 9, characterized in that: The tool holder box (13) is provided with a fastening bolt (14), which passes through the tool holder box (13) and one end of the blade (20) in sequence, and the fastening bolt (14) extends into the connecting extension body (12). A fastening nut (141) is provided at the protruding end of the fastening bolt (14).

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