Left side transmission case of double-shaft rotary cultivator

Abstract

The utility model discloses a left side transmission case of a double-shaft rotary cultivator, which relates to the technical field of double-shaft rotary cultivators and particularly comprises a transmission case shell, and a power input gear, a transmission gear I, a power output gear I, a transmission gear II and a power output gear II are movably connected in an inner cavity of the transmission case shell. The first power output gear is meshed with the power input gear through a first transmission gear, and the rotation center of the power input gear, the rotation center of the first transmission gear and the rotation center of the first power output gear are located on the same inclined straight line. The rotation center of the first power output gear is located on the side, away from the second power output gear, of the rotation center of the first transmission gear. According to the left side transmission box of the double-shaft rotary cultivator, the power input gear, the first transmission gear and the first power output gear are obliquely arranged, so that the whole cutter shaft of the double-shaft rotary cultivator inclines forwards, the type of the double-shaft rotary cultivator can be shortened by 17 cm, and the overall weight of the double-shaft rotary cultivator is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of double-shaft rotary tillers, in particular to a left-side transmission box of a double-shaft rotary tiller. Background Art

[0002] A rotary tiller is a tilling machine used in conjunction with a tractor to perform plowing and harrowing operations. It can break up subsurface root stubble, facilitating seed drill operations and providing a good seedbed for later sowing. A dual-shaft rotary tiller is a common type of rotary tiller in the prior art. It draws power from the tractor, which is then transferred to the left side transmission box via a transmission box, and then to the working shaft via the left side transmission box.

[0003] In the prior art, a structure of the left side transmission box is as shown in the specification. Figure 1 As shown, this type of left side transmission box includes a tractor power input gear 13 connected to the tractor, a power transmission gear 14 and a rotary tiller power output gear 15. Since the tractor power input gear 13 and the rotary tiller power output gear 15 are in a vertically arranged state, the rotary tiller is larger in size and heavier in weight. Based on this, the present application proposes a left side transmission box for a dual-axis rotary tiller. Utility Model Content

[0004] The utility model provides a left side transmission box for a double-shaft rotary tiller, which solves the problem in the above background technology that the tractor power input gear and the rotary tiller power output gear are in a vertical arrangement, resulting in a larger size and heavier weight of the rotary tiller.

[0005] The utility model provides the following technical solution: a left-side transmission box of a dual-shaft rotary tiller, comprising a transmission box housing, wherein a power input gear, a transmission gear 1, a power output gear 1, a transmission gear 2, and a power output gear 2 are movably connected in an inner cavity of the transmission box housing, wherein the power output gear 1 is meshed with the power input gear through the transmission gear 1, and the power output gear 2 is meshed with the transmission gear 1 through the transmission gear 2;

[0006] The rotation centers of the power input gear, transmission gear 1 and power output gear 1 are on the same inclined straight line, and the rotation center of the power output gear 1 is located on the side of the rotation center of the transmission gear 1 away from the power output gear 2.

[0007] Preferably, the transmission box housing includes a main body portion fixedly connected to the dual-shaft rotary tiller and a sealing portion for sealing an open end of the main body portion.

[0008] Preferably, the transmission gear 1 and the transmission gear 2 are both connected to the transmission box housing through bearing 1; one end of the power input gear, power output gear 1 and power output gear 2 are connected to the transmission box housing through another bearing 1, and the other end of the power input gear, power output gear 1 and power output gear 2 are connected to the transmission box housing through bearing 2.

[0009] Preferably, the outer surface of the transmission box housing is provided with a reinforcing rib plate; and the transmission gear is provided with an opening.

[0010] Preferably, the power input gear, the power output gear 1 and the power output gear 2 are all hollow structures, and the inner walls of the power input gear, the power output gear 1 and the power output gear 2 are provided with splines.

[0011] Preferably, there are two transmission gears 2, and the two transmission gears 2 are in a mutually meshed state, one transmission gear 2 is meshed with the transmission gear 1, and the other transmission gear 2 is meshed with the power output gear 2.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] 1. The left side transmission box of the double-shaft rotary tiller has the power input gear, transmission gear 1 and power output gear 1 tilted, so that the overall blade shaft of the double-shaft rotary tiller tilts forward, thereby shortening the model of the double-shaft rotary tiller by 17 cm and reducing the overall weight of the double-shaft rotary tiller. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the left side transmission box in the prior art;

[0015] Figure 2 This is a schematic diagram of the connection between the structure of the utility model and a double-shaft rotary tiller;

[0016] Figure 3 This is a schematic diagram of the back side of the structure of the utility model;

[0017] Figure 4 For the utility model structure Figure 3 Explosion diagram.

[0018] In the figure: 1. Main body; 2. Sealing part; 3. Bearing 1; 4. Transmission gear 1; 5. Power input gear; 6. Power output gear 1; 7. Transmission gear 2; 8. Power output gear 2; 9. Oil hole; 10. Observation hole; 11. Bearing 2; 12. Reinforcement rib plate; 13. Tractor power input gear; 14. Power transmission gear; 15. Rotary tiller power output gear. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0020] The utility model provides a left-side transmission box of a dual-axis rotary tiller, comprising a transmission box housing, wherein a power input gear 5, a transmission gear 4, a power output gear 6, a transmission gear 2 7 and a power output gear 2 8 are movably connected in the inner cavity of the transmission box housing, the power output gear 1 6 is engaged with the power input gear 5 through the transmission gear 1 4, and the power output gear 2 8 is engaged with the transmission gear 1 4 through the transmission gear 2 7. When the power input gear 5 rotates, the power input gear 5 can drive the transmission gear 1 4 engaged therewith to rotate, and when the transmission gear 1 4 rotates, it can drive the power output gear 1 6 and the transmission gear 2 7 engaged therewith to rotate.

[0021] There are two transmission gears 27, which are in a mutually meshed state. One transmission gear 27 is meshed with transmission gear 14, and the other transmission gear 27 is meshed with power output gear 28. By setting up two transmission gears 27, when transmission gear 14 rotates, it can drive power output gear 28 to rotate, and the rotation direction of power output gear 28 is the same as that of power output gear 16, which facilitates the operation of the dual-shaft rotary tiller.

[0022] The rotation centers of the power input gear 5, the transmission gear 4 and the power output gear 6 are on the same inclined straight line, and the rotation center of the power output gear 6 is located on the side of the rotation center of the transmission gear 4 away from the power output gear 2 8. This arrangement can make the overall knife shaft of the dual-axis rotary tiller tilt forward, shortening the machine model by 17 cm, thereby reducing the overall weight of the dual-axis rotary tiller.

[0023] The transmission box housing includes a main body 1 fixedly connected to the dual-shaft rotary tiller and a sealing portion 2 blocking the open end of the main body 1. The transmission box housing is a split design, which is convenient for repairing the gears in the transmission box housing.

[0024] The outer surface of the transmission box housing is provided with a reinforcing rib 12 to improve the strength of the transmission box housing, and the transmission box housing is provided with holes as required, such as an oil hole 9, an observation hole 10, a vent hole, etc.

[0025] The transmission gear 1 4 is provided with an opening to reduce the weight of the transmission gear 1 4 and facilitate the flow of lubricating oil in the transmission box housing.

[0026] Transmission gear 1 4 and transmission gear 2 7 are both connected to the transmission box housing through bearing 1 3. The outer ring of bearing 1 3 is fixedly connected to the transmission box housing, and the inner cavity of bearing 1 3 is connected to transmission gear 1 4 or transmission gear 2 7.

[0027] One end of the power input gear 5, the power output gear 16 and the power output gear 28 is connected to the sealing part 2 through another bearing 13, and the other ends of the power input gear 5, the power output gear 16 and the power output gear 28 are connected to the main body 1 through the bearing 2 11. The outer ring of the bearing 2 11 is connected to the main body 1, and one end of the inner ring of the bearing 2 11 is connected to the power input gear 5, the power output gear 16 or the power output gear 28. The other end of the inner ring of the bearing 2 11 is fixedly connected to a connecting flange. Using the connecting flange, the power input gear 5, the power output gear 16 or the power output gear 28 can be connected to the corresponding transmission shaft, and the power input gear 5, the power output gear 16 and the power output gear 28 are all hollow structures. The inner walls of the power input gear 5, the power output gear 16 and the power output gear 28 are provided with splines. The setting of the splines facilitates the connection of the transmission box to the transmission shaft.

[0028] To sum up: the left side transmission box of the double-axis rotary tiller tilts the power input gear 5, the transmission gear 4 and the power output gear 6, so that the overall blade of the double-axis rotary tiller tilts forward, shortens the machine model, and shortens the machine model by 17 cm, thereby reducing the overall weight of the double-axis rotary tiller.

[0029] The standard parts used in the present invention can all be purchased from the market, and special-shaped parts can be customized according to the description in the specification and the drawings. The specific connection methods of each part adopt conventional means such as mature bolts, rivets, welding, etc. in the existing technology. The machinery, parts and equipment all adopt conventional models in the existing technology and will not be described in detail here. The content not described in detail in this specification belongs to the existing technology known to professional and technical personnel in this field. Although the embodiments of the present invention have been shown and described, it can be understood by ordinary technicians in this field that various changes, modifications, substitutions and modifications can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the attached claims and their equivalents.

Claims

1. A left-side transmission box of a dual-shaft rotary tiller, comprising a transmission box housing, characterized in that: The inner cavity of the transmission case housing is movably connected with a power input gear (5), a transmission gear 1 (4), a power output gear 1 (6), a transmission gear 2 (7) and a power output gear 2 (8); the power output gear 1 (6) is meshed with the power input gear (5) through the transmission gear 1 (4), and the power output gear 2 (8) is meshed with the transmission gear 1 (4) through the transmission gear 2 (7); The rotation centers of the power input gear (5), the transmission gear 1 (4) and the power output gear 1 (6) are on the same inclined straight line, and the rotation center of the power output gear 1 (6) is located on the side of the rotation center of the transmission gear 1 (4) away from the power output gear 2 (8).

2. The left side transmission box of a dual-shaft rotary tiller according to claim 1, characterized in that: The transmission box housing comprises a main body (1) fixedly connected to the dual-shaft rotary tiller and a sealing portion (2) for sealing an open end of the main body (1).

3. The left side transmission box of a dual-shaft rotary tiller according to claim 2, characterized in that: The transmission gear 1 (4) and the transmission gear 2 (7) are both connected to the transmission case housing through a bearing 1 (3); one end of the power input gear (5), the power output gear 1 (6) and the power output gear 2 (8) are connected to the transmission case housing through another bearing 1 (3), and the other ends of the power input gear (5), the power output gear 1 (6) and the power output gear 2 (8) are connected to the transmission case housing through a bearing 2 (11).

4. The left side transmission box of a dual-shaft rotary tiller according to claim 1, characterized in that: The outer surface of the transmission box shell is provided with a reinforcing rib plate (12); and an opening is provided on the transmission gear 1 (4).

5. The left side transmission box of a dual-shaft rotary tiller according to claim 3, characterized in that: The power input gear (5), the power output gear 1 (6) and the power output gear 2 (8) are all hollow structures, and the inner walls of the power input gear (5), the power output gear 1 (6) and the power output gear 2 (8) are provided with splines.

6. The left side transmission box of a dual-shaft rotary tiller according to claim 1, characterized in that: There are two transmission gears 2 (7), and the two transmission gears 2 (7) are in a mutually meshed state, one transmission gear 2 (7) is meshed with the transmission gear 1 (4), and the other transmission gear 2 (7) is meshed with the power output gear 2 (8).

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