A gearbox for adjusting the center of gravity of a micro-ditcher

Abstract

The utility model provides a kind of gearbox for adjusting the gravity center of miniature ditcher, belong to agricultural machinery technical field.The gearbox of the utility model is engaged by first bevel gear and second bevel gear, the included angle between first transmission shaft and second transmission shaft is α, 90°≤α≤135°;First transmission shaft is installed in first box body, second transmission shaft is installed in second box body, the included angle between first box body and second box body is equal to α structure design, solve the problem that the gravity center of rectangular or approximate cubic shape transmission case is always located in itself, cannot further approach ground and power direction.The gearbox of the utility model includes shift assembly, output assembly, transmission assembly and main box;The transmission assembly includes first transmission shaft and second transmission shaft;The included angle between first transmission shaft and second transmission shaft is α, 90°≤α≤135°;Main box includes first box body and second box body, and the included angle between first box body and second box body is equal to α.

Description

Technical Field

[0001] This utility model belongs to the field of agricultural machinery technology, and in particular relates to a gearbox for adjusting the center of gravity of a mini trencher. Background Technology

[0002] Miniature ditchers, in the field of agricultural machinery technology, are small agricultural machines specifically designed for ditching operations in small or delicate areas such as farmland, orchards, vegetable gardens, and greenhouses.

[0003] The center of gravity position is crucial to the operational stability and safety of a mini trencher; a low center of gravity close to the direction of power is optimal. A low center of gravity significantly improves overall machine stability, effectively preventing tipping due to uneven ground or sudden changes in resistance, ensuring safety. Simultaneously, it distributes more weight to the drive wheels, enhancing traction, reducing slippage, and making traction and trenching more efficient. A center of gravity closer to the direction of power also balances the machine's weight, making operation easier and allowing for effortless one-handed operation.

[0004] In existing technology, the transmission box of a mini trencher is generally a compact rectangle or an approximate cube, installed almost horizontally, with one end connected to the power input shaft and the other end connected to the trenching cutter head. In order to make the center of gravity of the entire mini trencher closer to the ground and the direction of power, the center of gravity of the transmission box needs to be designed to be closer to the ground and the direction of power. However, with a rectangular or approximate cube-shaped transmission box, no matter where the transmission box is installed, its center of gravity is always located on itself and cannot be further moved closer to the ground and the direction of power. Utility Model Content

[0005] In view of the shortcomings of the prior art described above, the purpose of this utility model is to provide a gearbox for adjusting the center of gravity of a micro trencher, in order to solve the problem that the center of gravity of the rectangular or approximately cubic transmission box in the prior art is always located on itself and cannot be further close to the ground and the direction of power.

[0006] To achieve the above and other related objectives, this utility model provides a gearbox for adjusting the center of gravity of a mini trencher, comprising:

[0007] The shift assembly is connected to the power input shaft;

[0008] The output component is connected to the trenching cutter head;

[0009] The transmission assembly is connected to the shift assembly at one end and to the output assembly at the other end.

[0010] The main housing, in which the shift assembly, the transmission assembly, and the output assembly are all installed;

[0011] The transmission assembly includes:

[0012] The first drive shaft has one end connected to the shift assembly and the other end connected to the first bevel gear;

[0013] The second drive shaft is connected to the output component at one end and to the second bevel gear at the other end;

[0014] The first bevel gear and the second bevel gear mesh with each other, and the included angle between the first drive shaft and the second drive shaft is α, where 90°<α≤135°;

[0015] The main housing includes a first housing and a second housing. The first drive shaft is installed in the first housing, and the second drive shaft is installed in the second housing. The included angle between the first housing and the second housing is equal to α.

[0016] As described above, the gearbox for adjusting the center of gravity of a mini trencher according to this utility model has at least the following beneficial effects:

[0017] The gearbox of this micro trencher, which adjusts the center of gravity, meshes with a first bevel gear and a second bevel gear. The included angle between the first and second drive shafts is α, where 90° < α ≤ 135°. The first drive shaft is installed in the first housing, and the second drive shaft is installed in the second housing. This structural design, with the included angle α between the first and second housings equal to α, results in a "7"-shaped gearbox. The included angle α of this "7"-shaped gearbox is obtuse, causing the center of gravity of the entire gearbox to drop. At the same time, the included angle α ≤ 135° prevents the center of gravity of the gearbox from approaching the gearbox itself. Compared with rectangular or approximately cubic gearboxes, the gearbox of this invention is closer to the ground and the direction of power, thereby improving the overall operational stability and installation of the micro trencher, as well as achieving a more balanced center of gravity. It is also easier for the operator to operate, allowing for effortless one-handed operation. Attached Figure Description

[0018] Figure 1 The diagram shown is a schematic of a gearbox for adjusting the center of gravity of a miniature trencher according to this utility model.

[0019] Figure 2 The diagram shown is a schematic of the transmission component of this utility model.

[0020] Figure 3 The diagram shown is a schematic diagram of the shifting component of this utility model.

[0021] Component designation explanation

[0022] Shift assembly 1, shift operation part 11, shift arm 111, shift fork shaft 112, shift fork 113, shift block 114, shift transmission part 12; drive shaft 121, drive gear 122, reverse shaft 123, reverse gear 124, shift gear 125, gear position groove 126, shift groove 127.

[0023] Output component 2;

[0024] Transmission assembly 3, first transmission shaft 31, second transmission shaft 32, first bevel gear 33, second bevel gear 34;

[0025] Main gearbox 4, first gearbox 41, second gearbox 42, shift gearbox 43. Detailed Implementation

[0026] The following specific embodiments 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.

[0027] Please see Figures 1 to 3 It should be understood that the structures, proportions, sizes, etc., depicted in the accompanying drawings are merely for illustrative purposes to aid those skilled in the art and are not intended to limit the scope of this invention. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in proportions, or adjustments to size, without affecting the effectiveness and purpose of this invention, should still fall within the scope of the technical content disclosed in this invention. Furthermore, the terms such as "upper," "lower," "left," "right," "middle," and "one" used in this specification are merely for clarity and are not intended to limit the scope of this invention. Changes or adjustments to their relative relationships, without substantially altering the technical content, should also be considered within the scope of this invention.

[0028] The following embodiments are for illustrative purposes only. These embodiments can be combined and are not limited to the content shown in any single embodiment below.

[0029] Please see Figure 1 This utility model provides a gearbox for adjusting the center of gravity of a miniature trencher, which, like gearboxes in the prior art, includes:

[0030] like Figure 2 The shift assembly 1 shown is connected to the power input shaft and transmits the power from the power input shaft to the transmission assembly 3.

[0031] like Figure 2 The output component 2 shown is connected to the trenching cutter head.

[0032] like Figure 2 The transmission component 3 shown has one end connected to the shift component 1 and the other end connected to the output component 2. That is, the shift component 1 transmits the power from the power input shaft to the transmission component 3, the transmission component 3 transmits the power to the output component 2, and the output component 2 drives the trenching cutter head to work.

[0033] like Figure 1 and Figure 2 The main housing 4 shown houses the shift assembly 1, the transmission assembly 3, and the output assembly 2, providing a secure mounting position for all the components of the gearbox.

[0034] The core design feature of this gearbox lies in the fact that the transmission component 3 includes:

[0035] like Figure 2 The first drive shaft 31 shown is connected to the shift assembly 1 at one end and to the first bevel gear 33 at the other end.

[0036] like Figure 2 The second drive shaft 32 shown has one end connected to the output component 2 and the other end connected to the second bevel gear 34.

[0037] like Figure 1 and Figure 2 As shown, the first bevel gear 33 and the second bevel gear 34 mesh, and the included angle between the first drive shaft 31 and the second drive shaft 32 is α, 90° < α ≤ 135°; the main gearbox 4 includes a first housing 41 and a second housing 42, the first drive shaft 31 is installed in the first housing 41, and the second drive shaft 32 is installed in the second housing 42, with the included angle between the first housing 41 and the second housing 42 equal to α; that is, a "7"-shaped gearbox is obtained, and the included angle α of the "7"-shaped gearbox is an obtuse angle, making the entire gearbox... The lowered center of gravity (center of gravity) with an included angle α ≤ 135° prevents the center of gravity of the gearbox from approaching the gearbox itself. Compared to rectangular or near-cubic gearboxes, this gearbox is closer to the ground and the direction of power, thereby improving the overall operational stability and ease of installation of the mini trencher, as well as ensuring the uniformity of the trenching depth of the cutter head. It also alleviates problems such as the rearward shift of the center of gravity, inconvenient steering, and excessive physical exertion during the use of the mini trencher. At the same time, a more balanced center of gravity makes it easier for the operator to operate, and it can be operated with one hand without much effort.

[0038] In another implementation, please refer to Figure 1 and Figure 2 100°≤α≤120° is the preferred included angle α, and α=100° is even more preferred. This ensures the stability of the transmission between the first bevel gear 33 and the second bevel gear 34, and also ensures that the center of gravity of the gearbox of the present invention is closer to the ground and the direction of power.

[0039] In another implementation, please refer to Figure 2 The shift assembly 1 includes a shift operation unit 11 and a shift transmission unit 12; the shift transmission unit 12 includes:

[0040] like Figure 3The drive shaft 121 shown is connected to the power input shaft. Multiple drive gears 122 are mounted on the drive shaft 121, arranged axially and having different numbers of teeth.

[0041] like Figure 3 The reverse gear shaft 123 shown is equipped with a reverse gear 124.

[0042] like Figure 3 The shift gear 125 shown is mounted on the first drive shaft 31, which has multiple gear slots 126. The shift operation unit 11 drives the shift gear 125 to move axially along the drive shaft 121, sequentially engaging with different gear slots 126 and meshing with the multiple shift gears 125 and the reverse gear 124 in sequence. The sequential meshing with the multiple shift gears 125 enables different speeds for different gears, and the meshing with the reverse gear 124 enables the trenching cutter head to rotate clockwise and counterclockwise. Thus, the mini trencher equipped with the gearbox of this invention can adapt to dry land, greenhouses, orchards, and other different soil types or conditions.

[0043] In another implementation, please refer to Figure 2 and Figure 3 The shifting operation unit 11 includes a shifting arm 111, a shift fork 113 shaft 112, a shift fork 113, and a shift block 114. The shifting arm 111 is connected to the shift fork 113 shaft 112, the shift fork 113 shaft 112 is connected to the shift fork 113, and the shift fork 113 is connected to the shift block 114. Two shifting gears 125 are arranged along the drive shaft 121, the two shifting gears 125 are fixedly connected, and a shifting groove 127 is provided between them. The shift block 114 is installed in the shifting groove 127, and the shifting groove 127 and a plurality of gear position grooves 126 are sequentially engaged. This embodiment provides a cooperation form between the shifting operation unit 11 and the shifting transmission unit 12.

[0044] In another implementation, please refer to Figure 1 and Figure 3 The drive shaft 121 and the first drive shaft 31 are arranged in parallel; the main gearbox 4 also includes a shift gearbox 43, in which the shift assembly 1 is installed, and the shift gearbox 43 is connected to the first gearbox 41; to facilitate the installation of multiple parts of the gearbox.

[0045] In another implementation, please refer to Figure 1 The first housing 41 and the second housing 42 are integrally formed, which reduces the overall size of the gearbox and lowers the production cost of the gearbox.

[0046] In other implementations, such as Figure 2As shown, the output component 2 can adopt the technical solutions recorded in Chinese Utility Model Patent No. CN220986595U and Chinese Utility Model Patent No. CN221097246U.

[0047] In summary, this utility model, through the meshing of the first bevel gear 33 and the second bevel gear 34, and the included angle α between the first drive shaft 31 and the second drive shaft 32 (90° < α ≤ 135°), and the structural design where the first drive shaft 31 is installed in the first housing 41 and the second drive shaft 32 is installed in the second housing 42, with the included angle α between the first housing 41 and the second housing 42 equal to 7, achieves a "7"-shaped gearbox. Furthermore, the included angle α of this "7"-shaped gearbox is obtuse, causing the center of gravity (center of mass) of the entire gearbox to drop. When the included angle α ≤ 135°, it prevents the center of gravity of the gearbox from approaching the gearbox itself. Compared with rectangular or approximately cubic gearboxes, the gearbox of this invention is closer to the ground and the direction of power, thereby improving the overall operational stability and ease of installation of the mini trencher, and ensuring the uniformity of the trenching depth of the cutter head. It also alleviates problems such as the rearward shift of the center of gravity, inconvenient steering, and excessive physical exertion during the use of the mini trencher. Furthermore, it achieves a more balanced overall center of gravity, making it easier for the operator to operate, even with one hand. Therefore, this invention effectively overcomes the various shortcomings of the prior art and has high industrial application value.

[0048] The above embodiments are merely illustrative of the principles and effects of this utility model and are not intended to limit the scope of this utility model. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of this utility model. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in this utility model should still be covered by the claims of this utility model.

Claims

1. A gearbox for adjusting the center of gravity of a mini trencher, comprising: The shift assembly connects to the power input shaft; The output component is connected to the trenching cutter head; The transmission assembly is connected to the shift assembly at one end and to the output assembly at the other end. The main housing, in which the shift assembly, the transmission assembly, and the output assembly are all installed; The transmission assembly is characterized in that it comprises: The first drive shaft has one end connected to the shift assembly and the other end connected to the first bevel gear; The second drive shaft is connected to the output component at one end and to the second bevel gear at the other end; The first bevel gear and the second bevel gear mesh with each other, and the included angle between the first drive shaft and the second drive shaft is α, where 90°<α≤135°; The main housing includes a first housing and a second housing. The first drive shaft is installed in the first housing, and the second drive shaft is installed in the second housing. The included angle between the first housing and the second housing is equal to α.

2. The gearbox for adjusting the center of gravity of a miniature trencher according to claim 1, characterized in that: 100°≤α≤120°。 3. The gearbox for adjusting the center of gravity of a miniature trencher according to claim 2, characterized in that: α＝100°。 4. The gearbox for adjusting the center of gravity of a miniature trencher according to claim 1, characterized in that: The shift assembly includes a shift operation unit and a shift transmission unit; the shift transmission unit includes: A drive shaft is connected to a power input shaft, and multiple drive gears are mounted on the drive shaft, arranged axially and having different numbers of teeth. A reverse gear shaft, on which a reverse gear is mounted; A shift gear is mounted on the first drive shaft, which has multiple gear slots. The shift operation unit drives the shift gear to move axially along the drive shaft, and sequentially engages with different gear slots and the multiple shift gears and reverse gears.

5. The gearbox for adjusting the center of gravity of a miniature trencher according to claim 4, characterized in that: The shifting operation unit includes a shift arm, a shift fork shaft, a shift fork, and a shift block; The shift arm is connected to the shift fork shaft, the shift fork shaft is connected to the shift fork, and the shift fork is connected to the shift block; Two shift gears are arranged along the drive shaft, the two shift gears are fixedly connected, and a shift groove is provided between them. The shift block is installed in the shift groove, and the shift groove and the plurality of gear position grooves are sequentially engaged.

6. The gearbox for adjusting the center of gravity of a miniature trencher according to claim 4, characterized in that: The drive shaft and the first transmission shaft are arranged in parallel. The main gearbox also includes a gear shift housing, in which the gear shift assembly is installed, and the gear shift housing is connected to the first gearbox.

7. The gearbox for adjusting the center of gravity of a mini trencher according to claim 1, characterized in that: The first box and the second box are integrally formed.

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