Rotary tillage cutter shaft assembly

Abstract

The rotary tillage cutter shaft assembly comprises a cutter shaft and a rotary tillage cutter, a plurality of cutter holders are installed on the cutter shaft along the side wall of the cutter shaft at intervals in a staggered mode, the rotary tillage cutter comprises a cutter handle part, a main cutter part and a side cutter part which are integrally arranged, a first installation hole and a second installation hole are formed in the cutter handle part, and the first installation hole and the second installation hole are distributed in a high-low staggered mode. A first alignment hole corresponding to the first mounting hole and a second alignment hole corresponding to the second mounting hole are correspondingly formed in the tool apron, so that the installation of the tool handle part and the tool apron is realized, the main tool part and the side tool part form an external expansion extension radian, and the main tool part and the side tool part are used for increasing a rotary tillage cutting coverage surface. According to the rotary tillage cutter, the large-arc-shaped blade structure is adopted, compared with the number of rotary tillage cutters on an existing cutter shaft, the number of the rotary tillage cutters in the whole cutter shaft arrangement is smaller, and the same tillage effect can be achieved; the blade and the tool apron are matched through the abutting stop block and the two fastening bolts to achieve three-position stress, the stress of the blade is dispersed, and the overall service life is prolonged.

Description

Technical Field

[0001] The utility model belongs to the technical field of rotary tillage tools, and in particular relates to a rotary tillage blade shaft assembly. Background Art

[0002] The rotary tiller is an important agricultural machine and plays an important role in modern agricultural cultivation. The key functional component of the rotary tiller is the rotary tiller shaft assembly, including the rotary tiller shaft, the rotary tiller blades set on the rotary tiller shaft, and the position distribution of the rotary tiller blades on the rotary tiller shaft, which plays a decisive role in the operation effect and cultivation efficiency of the rotary tiller.

[0003] At present, the rotary tillers on the market generally have too many rotary blades on their shafts to achieve the effect of fine rotary tillage, which undoubtedly increases the load on the shaft. In addition, the existing rotary tillers break the soil at their outermost ends during rotary tillage, and the force arm between the force point and the installation point of the rotary tiller is long, consuming a lot of power, and are prone to breakage during long-term use. Utility Model Content

[0004] In order to make up for the shortcomings of the prior art, the utility model aims to provide a rotary tiller blade shaft assembly, which can reduce the density of rotary tiller blades and improve the rotary tillage effect. The specific technical solution is as follows:

[0005] A rotary tiller blade shaft assembly comprises a blade shaft and a rotary tiller blade, wherein a plurality of blade seats are installed on the blade shaft at staggered intervals along its side wall, and the rotary tiller blade comprises a handle portion, a main blade portion and a side blade portion which are integrally arranged, the blade handle portion is provided with a first mounting hole and a second mounting hole, the first mounting hole and the second mounting hole are arranged in a staggered height, and the blade seat is provided with a first alignment hole corresponding to the first mounting hole and a second alignment hole corresponding to the second mounting hole, the first mounting hole and the first alignment hole are fixedly matched by fasteners, and the second mounting hole and the second alignment hole are fixedly matched by fasteners, so as to realize the installation of the blade shaft portion and the blade seat, the main blade portion and the side blade portion form an outwardly expanding extension arc, and the main blade portion and the side blade portion are used to increase the rotary tiller cutting coverage.

[0006] Furthermore, a stop block is provided on one side of the handle portion, and the stop block is installed on the knife seat.

[0007] Furthermore, the tool holder includes two butt-jointed butt plates, the butt plates include a sleeve connection portion and an assembly portion that are integrally arranged, the sleeve connection portion is a semi-annular structure, and is fixedly sleeved on the tool shaft.

[0008] Furthermore, the assembly portion is a triangular convex plate, and one side of the triangular convex plate away from the sleeve portion is used for mounting a rotary tiller.

[0009] Furthermore, a third alignment hole is provided on the assembly portion, and the third alignment hole is used for installing an abutment block.

[0010] Furthermore, two rotary tillage blades are oppositely arranged on the tool rest, and the two rotary tillage blades face opposite directions; the rotary tillage blades on adjacent tool rests are arranged in a staggered manner.

[0011] Furthermore, the side cutting part is formed by extending from the main cutting part towards the side of the tool rest or away from the side of the tool rest.

[0012] Compared with the prior art, the utility model has the following advantages:

[0013] (1) Compared with the number of rotary tillage blades on the existing tool shaft, the rotary tillage blades in this application adopt a large curved blade structure, and the number of rotary tillage blades is less in the entire tool shaft arrangement, and the same tillage effect can be achieved; when the blade is installed on the tool rest, two fastening bolts are used for fastening, and an abutting block is added on the tool rest. The abutting block abuts against the blade, and three-way force is achieved in cooperation with the two fastening bolts, which can disperse the force on the blade and increase the overall service life.

[0014] (2) In this application, the main cutting part in the middle of the rotary tillage blade is used for soil breaking operation. The lever arm between the force application point and the blade installation point is short, the force is small, and it is more firm.

[0015] (3) A first alignment hole and a second alignment hole are arranged on the assembly part, and the first alignment hole and the second alignment hole are arranged in a high-low staggered manner to form an outward-expanded arrangement structure. Combined with the overall blade shape structure of the rotary tillage blade, the staggered fixing structure is used to increase the rotary tillage track size of a single rotary tillage blade and increase the rotary tillage depth, thereby reducing the arrangement density of the rotary tillage blades. At the same time, it has a good rotary tillage effect; the overall weight of the rotary tillage tool shaft is reduced, the power consumption can be reduced, the service life can be increased, and the overall cost can be reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is one of the structural schematic diagrams of the utility model;

[0017] Figure 2 is the second structural schematic diagram of the utility model;

[0018] Figure 3 is the third structural schematic diagram of the utility model;

[0019] Figure 4 is the fourth structural schematic diagram of the utility model;

[0020] Figure 5 is of the utility model Figure 4 the enlarged view at A in;

[0021] Figure 6 is the side view structural diagram of the utility model;

[0022] Figure 7This is a schematic diagram of the structure of the rotary tillage blade of the present utility model.

[0023] In the figure: 1 - cutter shaft, 2 - tool holder, 21 - docking plate, 211 - socket part, 212 - assembly part, 3 - rotary tillage blade, 31 - handle part, 32 - main blade part, 33 - side blade part, 34 - first mounting hole, 35 - second mounting hole, 4 - fastening bolt, 5 - abutting block. Specific embodiments

[0024] To enable those skilled in the art to more clearly understand the technical solution of the present application, the present utility model will be further described below with reference to the accompanying drawings.

[0025] As Figures 1 - 7 shown, a rotary tillage cutter shaft assembly includes a cutter shaft 1 and a rotary tillage blade 3. One end of the cutter shaft 1 is provided with a bearing, and the other end is engaged with a gear. A plurality of tool holders 2 are installed on the side wall of the cutter shaft 1 at staggered intervals. The rotary tillage blade 3 includes a handle part 31, a main blade part 32 and a side blade part 33 which are integrally arranged. The handle part 31 is used for cooperating with the tool holder 2 for installation. An abutting block 5 is arranged on one side edge of the handle part 31, and the abutting block 5 is installed on the tool holder 2. The outer edge of the cutting edge of the main blade part 32 is at the initial abutting end of the cutting arc when the rotary tillage blade 3 rotates, and the side blade part 33 extends in an arc shape to one side.

[0026] In this embodiment, each group of tool holders 2 includes two docking plates 21 that are docked and matched. The docking plate 21 includes a socket part 211 and an assembly part 212 that are integrally arranged. The socket part 211 is a semi-circular structure and is fixedly sleeved on the cutter shaft 1. The assembly part 212 is a triangular convex plate, and one side of the triangular convex plate away from the socket part 211 is used for installing the rotary tillage blade 3. The triangular convex plate cooperates with two fastening bolts 4 arranged at intervals to fasten the rotary tillage blade 3, and an abutting block 5 is also arranged on the triangular convex plate to abut against the handle part 31 of the rotary tillage blade 3.

[0027] It can be understood that two fastening bolts 4 are used to fasten between the tool holder 2 and the rotary tillage blade 3, and an abutting block 5 is added on the tool holder 2. The abutting block 5 abuts against the rotary tillage blade 3, and together with the two fastening bolts 4, three-way force is realized, which can disperse the stress points of the rotary tillage blade 3 and increase the overall service life.

[0028] Continue to refer to Figure 7It can be seen that two rotary tillage blades 3 are oppositely arranged on each tool rest 2, and the two rotary tillage blades 3 face in opposite directions; the rotary tillage blades 3 on adjacent tool rests 2 are arranged in a staggered manner. A first mounting hole 34 and a second mounting hole 35 are provided on the tool handle portion 31, and the first mounting hole 34 and the second mounting hole 35 are arranged in a high-low staggered manner. The first mounting hole 34 and the second mounting hole 35 are respectively used for fastening and cooperating with the assembly portion 22 through fastening bolts 4; a first alignment hole, a second alignment hole, and a third alignment hole are provided on the assembly portion 212. The first alignment hole corresponds to the first mounting hole 34, the second alignment hole corresponds to the second mounting hole 35, and the fixing installation of the tool handle portion 31 is completed through fasteners. The third alignment hole is used for installing and abutting against the stop block 5. The side blade portion 33 extends from the main blade portion 32 towards the side close to the tool rest 2 or towards the side away from the tool rest 2. That is, the rotary tillage blade 3 includes a left-handed blade and a right-handed blade. The side blade portion 33 of the left-handed blade extends from the main blade portion 32 towards the side close to the tool rest 2; the side blade portion 33 of the right-handed blade extends from the main blade portion 32 away from the tool rest 2; the two rotary tillage blades 3 on the same tool rest 2 are respectively a left-handed blade and a right-handed blade.

[0029] It can be understood that the rotary tillage blade 3 adopts a large curved blade structure, and the distance between the side blade portions 33 of the rotary tillage blades 3 on adjacent tool rests 2 is smaller; therefore, in comparison with the existing arrangement of rotary tillage blades, fewer rotary tillage blades in the entire tool shaft arrangement of this application can achieve the same tillage effect. The traditional rotary tillage blade 3 performs soil crushing work with the side blade portion under force. The lever arm between the force application point and the blade installation point is long, the force is large, and it is prone to breakage; while in this application, the rotary tillage blade 3 performs soil crushing operation with the main blade portion 32 in the middle. The lever arm between the force application point and the blade installation point is shorter, the force is smaller, and it is more firm. In addition, a first alignment hole and a second alignment hole are provided on the assembly portion, and the first alignment hole and the second alignment hole are arranged in a high-low staggered manner to form an outward-expanded arrangement structure. Combining with the overall blade shape structure of the rotary tillage blade, using the staggered fixing structure, the rotary tillage track size of a single rotary tillage blade is increased, the rotary tillage depth is increased, thereby reducing the arrangement density of the rotary tillage blades and having a good rotary tillage effect at the same time.

[0030] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A rotary tiller blade shaft assembly, comprising a blade shaft (1) and a rotary tiller blade (3), characterized in that: A plurality of blade seats (2) are installed on the blade shaft (1) at staggered intervals along the side wall thereof. The rotary tiller blade (3) comprises a blade handle portion (31), a main blade portion (32) and a side blade portion (33) which are integrally arranged. The blade handle portion (31) is provided with a first mounting hole (34) and a second mounting hole (35). The first mounting hole (34) and the second mounting hole (35) are arranged in a staggered manner. The blade seat (2) is provided with a first alignment hole corresponding to the first mounting hole (34) and a second alignment hole corresponding to the second mounting hole (35). The first mounting hole (34) and the first alignment hole are fixedly matched by a fastener, and the second mounting hole (35) and the second alignment hole are fixedly matched by a fastener, so that the blade handle portion (31) and the blade seat (2) are installed. The main blade portion (32) and the side blade portion (33) form an outwardly extending arc. The main blade portion (32) and the side blade portion (33) are used to increase the rotary tiller cutting coverage.

2. A rotary tiller blade shaft assembly according to claim 1, characterized in that: A stop block (5) is provided on one side of the knife handle portion (31), and the stop block (5) is mounted on the knife seat (2).

3. The rotary tiller blade shaft assembly according to claim 1, characterized in that: The knife seat (2) comprises two butt-jointed butt plates (21), the butt plates (21) comprising an integrally arranged sleeve portion (211) and an assembly portion (212), the sleeve portion (211) being a semi-annular structure, fixedly sleeved on the knife shaft (1).

4. A rotary tiller blade shaft assembly according to claim 3, characterized in that: The assembly portion (212) is a triangular convex plate, and one side of the triangular convex plate away from the sleeve portion (211) is used for mounting the rotary tiller blade (3).

5. The rotary tiller blade shaft assembly according to claim 3, characterized in that: The assembly portion (212) is also provided with a third alignment hole, the third alignment hole being used for installing the abutment stopper (5).

6. A rotary tiller blade shaft assembly according to any one of claims 1 to 5, characterized in that: Two rotary tilling knives (3) are arranged opposite to each other on the knife seat (2), and the two rotary tilling knives (3) face in opposite directions; the rotary tilling knives (3) on adjacent knife seats (2) are arranged in a staggered manner.

7. A rotary tiller blade shaft assembly according to claim 6, characterized in that: The side knife portion (33) is formed by the main knife portion (32) extending toward a side close to the knife seat (2) or extending toward a side away from the knife seat (2).

Images