Gearbox and agricultural mini-tiller thereof

Abstract

The utility model discloses a gearbox and an agricultural mini-tiller thereof, and belongs to the technical field of agricultural mini-tillers. The gearbox comprises a gearbox body; the transmission assembly comprises a first shaft, a second shaft, a third shaft, a reverse gear shaft, a steering shaft, a driving shaft and a transition shaft; the transmission assembly is rotationally arranged in the gearbox body; the second shaft, the third shaft, the steering shaft and the driving shaft are sequentially in transmission connection; the first shaft, the reverse gear shaft, the second shaft, the third shaft, the steering shaft and the driving shaft are sequentially distributed from the top to the bottom of the gearbox body. The transition shaft is in transmission connection with the second shaft; the transmission assembly is provided with a walking gear and a reverse gear, the first shaft is in transmission connection with the second shaft in the walking gear, and the first shaft, the reverse gear shaft and the second shaft are in transmission connection in sequence in the reverse gear. The gearbox is simple in overall structure, the functions of first-gear walking, second-gear walking, reverse gear, low-gear speed change, high-gear speed change, steering and the like of the mini-tiller can be achieved only by adopting the shaft for transmission of the gearbox, the number of used parts is small, the size of the gearbox is effectively reduced, and the weight of the gearbox is reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of agricultural micro-tillage machines, and in particular relates to a gearbox and an agricultural micro-tillage machine. Background Art

[0002] Micro tillers are suitable for land cultivation and tillage. Currently, the existing micro tillers are mainly divided into two-drive micro tillers and four-drive micro tillers. However, no matter whether they are two-drive micro tillers or four-drive micro tillers, they have the following problems in actual use:

[0003] 1. In order to reduce the weight of the machine and pursue lightness, some micro-tillage machines simplify the transmission structure of the gearbox and reduce the number of parts, resulting in reduced gearbox functions, fewer gears, and lack of steering, reverse gear, rotary tillage reversal and other functions, making the machine difficult to operate, slow to transfer, and low working efficiency.

[0004] 2. Although some micro-tillers are barely designed with a drive steering structure or a reverse gear structure, the steering and reverse gear functions are not easy to use and have poor adaptability.

[0005] 3. Some micro-tillage machines use traditional transmission structures to achieve multi-functionality. The gearbox structure, rotary tillage structure and the overall structure are complex and bulky, and are not suitable for farming in mountainous or hilly areas.

[0006] 4. Or some micro-tillage machines reduce the size of the machine and the gearbox, resulting in a low clutch position, which makes it easy for mud and water to enter and cause damage. Utility Model Content

[0007] The utility model provides a gearbox and an agricultural micro-tillage machine thereof to solve the technical problems mentioned in the background technology.

[0008] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0009] A gearbox, comprising: a gearbox body; a transmission assembly, comprising a first shaft, a second shaft, a third shaft, a reverse gear shaft, a steering shaft, a drive shaft and a transition shaft; the transmission assembly is rotatably arranged in the gearbox body; the second shaft, the third shaft, the steering shaft and the drive shaft are sequentially connected in transmission; the first shaft, the reverse gear shaft, the second shaft, the third shaft, the steering shaft and the drive shaft are sequentially distributed from the top to the bottom of the gearbox body; the transition shaft is close to the second shaft and is transmission-connected with the second shaft; the transmission assembly is provided with a traveling gear and a reverse gear, in the traveling gear, the first shaft is transmission-connected with the second shaft, in the reverse gear, the first shaft, the reverse gear shaft and the second shaft are transmission-connected in sequence.

[0010] As a further improvement of the technical solution, the transmission assembly also includes a transmission gear; the transmission gear is located inside the gearbox body; the transmission gear includes a first-axis traveling gear, a second-axis first-gear traveling gear, a second-axis second-gear traveling gear and a reverse gear; the first-axis traveling gear is arranged on the first axis; the second-axis first-gear traveling gear and the second-axis second-gear traveling gear are arranged on the second axis; the reverse gear is arranged on the reverse gear shaft; in the traveling gear, the first-axis traveling gear is meshed and transmitted with the second-axis first-gear traveling gear or the second-axis second-gear traveling gear; in the reverse gear, the first-axis traveling gear, the reverse gear and the second-axis first-gear traveling gear are meshed and transmitted.

[0011] As a further improvement of the technical solution, the transmission gear also includes a two-shaft transmission gear, a three-shaft double-gear gear, a three-shaft transmission gear, a steering intermediate gear, a steering gear and a driving gear; the two-shaft transmission gear is arranged on the two shafts; the three-shaft double-gear gear and the three-shaft transmission gear are arranged on the three shafts; the steering intermediate gear and the steering gear are arranged on the steering shaft; the driving gear is arranged on the driving shaft; the two-shaft transmission gear is meshed and connected to the three-shaft double-gear gear; the three-shaft transmission gear is meshed and connected to the steering intermediate gear; the steering gear is meshed and connected to the driving gear.

[0012] As a further improvement of the technical solution, the steering gear is located at both ends of the steering shaft; and the driving gear is located at both ends of the driving shaft.

[0013] As a further improvement of the technical solution, the interior of the steering shaft is a hollow structure; the steering shaft also includes a spring, a ball bearing shaft and a thimble; the spring and the ball bearing shaft are both arranged inside the steering shaft, wherein the spring is located in the middle of the steering shaft, and the ball bearing shaft is located at both ends of the steering shaft; the two ends of the spring are respectively connected to one end of the ball bearing shaft; the thimble is slidably arranged in the gearbox body corresponding to the ball bearing shaft; one end of the thimble is connected to one end of the ball bearing shaft away from the spring, and the other end thereof is exposed on the outside of the gearbox body; a conical surface is provided on the surface of the ball bearing shaft; inner cylindrical raceways are respectively provided between the steering gear and the conical surface; and steel balls are provided on the inner cylindrical raceways.

[0014] As a further improvement of the technical solution, the transmission assembly also includes a two-axis rotary tillage gear; the two-axis rotary tillage gear is arranged on the two shafts; the transmission assembly also includes a transition gear; the transition gear is arranged on the transition shaft; one end of the transition gear is meshed and transmission-connected with the two-axis rotary tillage gear.

[0015] As a further improvement of the technical solution, the utility model provides a gearbox also including a rotary tillage assembly; the rotary tillage assembly includes a rotary tillage box, a rotary tillage transmission shaft and a rotary tillage main shaft; one end of the rotary tillage box is connected to the gearbox box; the rotary tillage main shaft is rotatably arranged at one end of the rotary tillage box away from the gearbox box; the direction of the rotary tillage main shaft axis is consistent with the direction of the one axis; the transition shaft is located between the gearbox box and the two axes; the rotary tillage transmission shaft is rotatably arranged in the rotary tillage box, one end of which is meshingly connected to one end of the transition gear away from the two-axis rotary tillage gear through a bevel gear, and the other end of which is meshingly connected to the middle part of the rotary tillage main shaft through a bevel gear.

[0016] As a further improvement of the technical solution, the transmission assembly also includes a first-axis rotary tilling gear and a reverse gear shaft rotary tilling gear; the first-axis rotary tilling gear is arranged on the first shaft; the reverse gear shaft rotary tilling gear is arranged on the reverse gear shaft; the transmission assembly is provided with a forward gear and a reverse gear, in the forward gear, the first-axis rotary tilling gear is meshed and transmission-connected with the second-axis rotary tilling gear, in the reverse gear, the first-axis rotary tilling gear, the reverse gear shaft rotary tilling gear and the second-axis rotary tilling gear are meshed and transmission-connected in sequence.

[0017] As a further improvement of the technical solution, the gearbox body also includes a shift fork shaft, a shift fork, a shift rod and a shift lever; the shift fork shaft is connected to the transmission assembly; one end of the shift fork is connected to the shift fork shaft, and the other end thereof is connected to the shift rod; the shift rod is connected to the shift rod; the shift fork shaft and the shift fork are located in the gearbox body; the shift rod is located outside the gearbox body; one end of the shift rod is located in the gearbox body, and the other end thereof is located outside the gearbox body.

[0018] An agricultural micro-tillage machine comprises the above-mentioned gearbox, frame, engine, clutch, and travel wheel; the gearbox and the engine are both arranged on the frame; the engine and the shaft are connected through the clutch; the travel wheel is arranged on the drive shaft.

[0019] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0020] 1. The utility model has a simple overall structure. The gearbox only adopts five axes for transmission to realize the functions of the micro-tiller, such as first gear walking, second gear walking, reverse gear, low gear shifting, high gear shifting and steering. Few parts are used, the volume of the gearbox is effectively reduced, the weight of the gearbox is reduced, thereby reducing the overall complexity of the micro-tiller. The machine is simple to operate, has high working efficiency and strong adaptability, and can adapt to mountainous or hilly areas; the engine drives one shaft to rotate through the clutch, and the one shaft directly or indirectly transmits power to the second shaft through the one shaft walking gear, the second shaft rotates, and the second shaft is connected through the meshing transmission of the second shaft transmission gear and the third shaft double gear, driving the third shaft to rotate, and the third shaft transmission gear and the third shaft intermediate transmission gear on the third shaft are meshed and transmitted with the steering intermediate gear, driving the steering shaft to rotate, and the steering shaft is meshed and transmitted with the steering gear and the driving gear, driving the driving shaft to rotate, thereby realizing the walking of the walking wheel.

[0021] 2. The utility model has an independent rotary tillage function, and the rotary tillage transmission is simple and has few parts, which effectively reduces the manufacturing cost, reduces the difficulty of installation and maintenance, and reduces the overall weight to adapt to tillage in highland or hilly areas; the two-axis rotary tillage gear and the flat gear of the transition gear are meshed for transmission, and the power of the two axes is transmitted to the transition shaft. At the same time, the bevel gear of the transition gear is meshed for transmission with the rotary tillage drive shaft, driving the rotary tillage drive shaft to rotate, and the rotary tillage drive shaft then drives the rotary tillage main shaft to rotate, thereby driving the rotary tillage blade to rotate, realizing the rotary tillage function.

[0022] 3. The gearbox of the utility model can be placed upright, with one shaft positioned higher than the other shafts, so that the clutch is placed higher, effectively avoiding damage caused by mud and water intrusion during operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0024] Figure 1 A schematic diagram of the structure of a gearbox of the utility model Figure 1 ;

[0025] Figure 2 for Figure 1 Sectional view at AA in the middle;

[0026] Figure 3 for Figure 2 The enlarged schematic diagram of point B in the middle;

[0027] Figure 4 for Figure 1 Sectional view at CC;

[0028] Figure 5 for Figure 2 A cross-sectional view of

[0029] Figure 6 The structure of a gearbox of the utility model is shown in FIG. Figure 2 ;

[0030] Figure 7 for Figure 6 Sectional view at DD in the middle;

[0031] Figure 8 This is a structural schematic diagram of an agricultural micro-tillage machine of the utility model;

[0032] Figure numerals: 1-gearbox body 2-transmission assembly, 21-first shaft, 211-first shaft travel gear, 212-first shaft rotary tillage gear, 22-second shaft, 221-second shaft first gear travel gear, 222-second shaft second gear travel gear, 223-second shaft transmission gear, 224-second shaft rotary tillage gear, 23-third shaft, 231-third shaft double gear gear, 232-third shaft transmission gear, 24-reverse gear shaft, 241=reverse gear, 2 42-reverse gear shaft rotary tillage gear, 25-steering shaft, 251-steering intermediate gear, 252-steering gear, 253-spring, 254-thrust ball shaft, 255-thrust pin, 26-drive shaft, 261-drive gear, 27-transition shaft, 271-transition gear, 3-rotary tillage assembly, 31-rotary tillage box, 32-rotary tillage transmission shaft, 33-rotary tillage main shaft, 4-frame, 5-engine, 6-clutch, 7-travel wheel. DETAILED DESCRIPTION

[0033] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution of the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings of the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments. Based on the described embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model. Unless otherwise defined, the technical terms or scientific terms used herein should be the common meanings understood by people with general skills in the field to which the utility model belongs.

[0034] The words "first", "second" and similar words used in the specification and claims of the utility model invention application do not indicate any order, quantity or importance, but are only used to distinguish different components. Similarly, unless the context clearly indicates otherwise, the singular form of "a", "an" or "the" and similar words do not indicate a quantitative limitation, but indicate the existence of at least one. "Include" or "comprise" and similar words mean that the elements or objects appearing before "include" or "comprise" include the features, wholes, steps, operations, elements and / or components listed after "include" or "comprise", and do not exclude the existence or addition of one or more other features, wholes, steps, operations, elements, components and / or their collections. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0035] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", and "set" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0036] Embodiment 1:

[0037] like Figures 1 to 8As shown, an agricultural micro-tillage machine includes a frame 4, an engine 5, a clutch 6, a travel wheel 7 and a gearbox; the gearbox includes a gearbox body 1 and a transmission assembly 2; the transmission assembly 2 is rotatably arranged in the gearbox body 1; the transmission assembly 2 includes a first shaft 21, a second shaft 22, a third shaft 23, a reverse gear shaft 24, a steering shaft 25 and a drive shaft 26; the first shaft 21, the reverse gear shaft 24, the second shaft 22, the third shaft 23, the steering shaft 25 and the drive shaft 26 are distributed in sequence from the top to the bottom of the gearbox body 1, wherein the second shaft 22, the third shaft 23, the steering shaft 25 and the drive shaft 26 are sequentially connected in transmission; the transmission assembly 2 is provided with a travel gear and a reverse gear, and when the transmission assembly 2 is in the travel gear, the first shaft 21 and the second shaft 22 are driven. When the transmission assembly 2 is in reverse gear, the first shaft 21, the reverse shaft 24 and the second shaft 22 are sequentially connected in transmission; the gearbox and the engine 5 are both arranged on the frame 4; the engine 5 and the first shaft 21 are connected in transmission through the clutch 6, and the gearbox is placed upright, wherein the first shaft 21 is higher than the other shafts, so that the clutch is placed higher, effectively avoiding the intrusion of mud and water during operation; the two ends of the drive shaft 16 are exposed outside the gearbox body 1, and the running wheels 7 are arranged on the two ends of the drive shaft 26; the engine 5 drives the first shaft 21 to rotate through the clutch 6, and the first shaft 21 drives the drive shaft 26 to rotate through the transmission between the reverse shaft 24, the second shaft 22, the third shaft 23 and the steering shaft 25, so that the running wheels 7 move. In addition, it should be noted that the connection method between the engine, the clutch and the first shaft is a conventional connection, and the specific models of the engine and the clutch are not the improvement points of this application, so they will not be repeated here.

[0038] like Figure 2 , Figure 3 and Figure 5As shown, preferably, the transmission assembly 2 also includes a transmission gear; the transmission gear is located inside the housing 1; the transmission gear includes a first-axis traveling gear 211, a second-axis first-gear traveling gear 221, a second-axis second-gear traveling gear 222 and a reverse gear 241; the first-axis traveling gear 211 is arranged on the first axis 21, and the two ends of the first-axis traveling gear 211 are a large and a small gear; the second-axis first-gear traveling gear 221 and the second-axis second-gear traveling gear 222 are both arranged on the second axis 22, wherein the diameter of the second-axis first-gear traveling gear 221 is greater than the diameter of the second-axis second-gear traveling gear 222; the reverse gear 241 is arranged on the reverse gear shaft 24, and the reverse gear 241 corresponds to the first-axis traveling gear 211 and the second-axis first-gear traveling gear 221, and the two ends are a large and a small gear structure; when the gearbox is in the traveling gear, the first-axis traveling gear 211 and the second-axis first-gear traveling gear 221 or the second-axis second-gear traveling gear 2 22 meshing transmission connection, that is, the travel gear is divided into first gear and second gear, the first-axis travel gear 21 is moved to the corresponding position, and the power of the first-axis 21 is transmitted to the second-axis first-gear travel gear 221 or the second-axis second-gear travel gear 222 through the first-axis travel gear 211, thereby driving the second shaft 22 to rotate, forming first gear travel or second gear travel; when the gearbox is in reverse gear, the first-axis 21 and the second-axis 22 are transmitted through the reverse gear shaft 24, that is, the first-axis travel gear 211 is separated from the second-axis first-gear travel gear 221 and the second-axis second-gear gear 22, and the first-axis travel gear 211 is meshed with the reverse gear 241 for transmission, wherein the large end gear of the reverse gear 241 is meshed with the large end gear of the first-axis travel gear 211 for transmission, and the large end gear of the reverse gear 241 is meshed with the second-axis first-gear travel gear 221 for transmission, thereby driving the rotation of the second shaft 22, transmitting the power to the second shaft 22, and forming reverse gear.

[0039] like Figures 2 to 6As shown, preferably, the transmission gear also includes a two-axis transmission gear 223, a three-axis double-linked gear 231, a three-axis transmission gear 232, a steering intermediate gear 251, a steering gear 252 and a driving gear 261; the two-axis transmission gear 223 is arranged on the second axis; the three-axis double-linked gear 231 and the three-axis transmission gear 232 are both arranged on the three-axis 23, wherein the two ends of the three-axis double-linked gear 231 are a large and a small gear to realize the high and low gear modes of the gearbox; the steering intermediate gear 251 and the steering gear 252 are both arranged on the steering walk 25; the driving gear 261 is arranged on the driving shaft 26; the two-axis transmission gear 223 is meshed and connected with the three-axis double-linked gear 231, and the diameter of the two-axis transmission gear 223 is smaller than the diameter of the two-axis second gear walking gear 222; the three-axis transmission gear 232 is meshed and connected with the steering intermediate gear 251; the steering gear 252 and the driving gear 261 meshes and transmits; when the gearbox is in low gear shifting, the three-axis double gear gear 231 is moved, so that the large end gear of the three-axis double gear gear 231 is meshed and connected with the second shaft transmission gear 223, and the three-axis intermediate transmission gear 232 is meshed and transmitted with the steering intermediate gear 251, driving the steering shaft 25 to rotate, and the steering shaft 25 is then meshed and transmitted with the steering gear 252 and the driving gear 261, driving the drive shaft 26 to rotate, realizing the low gear shifting mode; when the speed change direction is high gear shifting, the three-axis double gear gear 231 is moved, so that the small end gear of the three-axis double gear gear 231 is meshed and transmitted with the second shaft second gear walking gear 222, and the three-axis intermediate transmission gear 232 is meshed and transmitted with the steering intermediate gear 251, driving the steering shaft 25 to rotate, and the steering shaft 25 is then meshed and transmitted with the steering gear 252 and the driving gear 261, driving the drive shaft 26 to rotate, realizing the high gear shifting mode.

[0040] Working method:

[0041] The engine 5 drives the first shaft 21 to rotate through the clutch 6, and the first shaft 21 directly or indirectly transmits power to the second shaft 22 through the first shaft travel gear 211. The second shaft 22 rotates, and the second shaft 22 is connected by meshing transmission through the second shaft transmission gear 223 and the third shaft double gear gear 231, driving the third shaft 23 to rotate, and the third shaft transmission gear 232 and the third shaft intermediate transmission gear 232 on the third shaft 23 are meshed and transmitted with the steering intermediate gear 251, driving the steering shaft 25 to rotate, and the steering shaft 25 is meshed and transmitted with the steering gear 252 and the driving gear 261, driving the driving shaft 26 to rotate, thereby realizing the walking of the travel wheel 7; the overall structure of the present application is simple, and the gearbox only uses five axes for transmission to realize the first gear walking, second gear walking, reverse gear, low gear shifting, high gear shifting and steering functions of the micro-tillage machine, and uses fewer parts, effectively reducing the volume of the gearbox, reducing the weight of the gearbox, thereby reducing the overall complexity of the micro-tillage machine, and the machine is simple to operate, high in working efficiency, and strong in adaptability, and can adapt to mountainous or hilly areas.

[0042] like Figure 2 and Figure 3 As shown, preferably, the steering gear 252 is located at both ends of the steering shaft 25; the driving gear 261 is located at both ends of the driving shaft 26; the interior of the steering shaft 25 is a hollow structure; the steering shaft 25 also includes a spring 253, a ball bearing shaft 254 and an ejector pin 255; the spring 253 and the ball bearing shaft 254 are both arranged inside the steering shaft 25, wherein the spring 253 is located in the middle of the steering shaft 25, and the ball bearing shaft 254 is located at both ends of the steering shaft 25; the two ends of the spring 253 are respectively connected to one end of the ball bearing shaft 254; the ejector pin 255 is slidably arranged on the box body 1 corresponding to the ball bearing shaft 254; one end of the ejector pin 255 is connected to one end of the ball bearing shaft 254 away from the spring 253, and the other end thereof is exposed outside the box body 1 and connected to the steering control mechanism (not shown in the figure, the steering control structure can adopt the applicant's prior art The applied patent number is the structure in 2020214159372); a conical surface is provided on the surface of the ball bearing shaft 254; an inner cylindrical raceway is provided between the steering gear 252 and the conical surface; a steel ball is provided on the inner cylindrical raceway, and the steel ball is used to realize the interlocking connection between the steering gear 252 and the steering shaft 25 to control the power transmission of the steering gear 252; when steering is required, the ejector pin 255 is pushed in through the steering operation structure, the ejector pin 255 presses the ball bearing shaft 254, the spring 253 is compressed, and the steel ball retracts and separates from the steering gear 252. At this time, the power transmission of the steering gear 252 at one end is cut off, and the steering gear 252 at the other end is not cut off, so that one end of the driving shaft 26 is powered and the other end is unpowered, and the walking wheel 7 rotates and walks while stopping to achieve steering.

[0043] Embodiment 2:

[0044] like Figures 2 to 7As shown, compared with the first embodiment, the difference is that: a rotary tillage component 3 is added; the rotary tillage component 3 includes a rotary tillage box 31, a rotary tillage transmission shaft 32 and a rotary tillage main shaft 33; one end of the rotary tillage box 31 is connected to the box 1; optionally, the rotary tillage box 31 can be a rectangular structure or a long strip structure; the rotary tillage main shaft 33 is rotatably arranged at the end of the rotary tillage box 31 away from the box 1; the axis direction of the rotary tillage main shaft 33 is consistent with the direction of the shaft 21, and both ends of the rotary tillage main shaft 33 are exposed outside the rotary tillage box 31, and both ends are connected to the rotary tillage blade; the rotary tillage transmission shaft 32 is rotatably arranged in the rotary tillage box 31, and both ends of the rotary tillage transmission shaft 32 are respectively provided with bevel gears, and one end of the rotary tillage main shaft 33 is connected to the transmission component through the bevel gear. 2 is meshed and driven, and the other end is meshed and driven with the middle part of the rotary tillage main shaft 33 (the middle part of the rotary tillage main shaft 33 is correspondingly provided with a bevel gear) through a bevel gear; the transmission gear also includes a two-axis rotary tillage gear 224; the two-axis rotary tillage gear 224 is arranged on the two shafts 22; the transmission assembly 2 also includes a transition shaft 27 and a transition gear 271; the transition shaft 27 is rotatably arranged on the part of the housing 1 close to the rotary tillage housing 31; the transition gear 271 is arranged on the transition shaft 27; one end of the transition gear 271 is a flat gear, and the other end is a bevel gear, the bevel gear of the transition gear 271 is meshed and driven with the bevel gear on the rotary tillage transmission shaft 32, and its flat gear is meshed and driven with the two-axis rotary tillage gear 224.

[0045] Working method:

[0046] The two-axis rotary tillage gear 224 meshes with the flat gear of the transition gear 271 to transmit the power of the two-axis 22 to the transition shaft 27. At the same time, the bevel gear of the transition gear 271 meshes with the rotary tillage drive shaft 32 to drive the rotary tillage drive shaft 32 to rotate. The rotary tillage drive shaft 32 then drives the rotary tillage main shaft 33 to rotate, thereby driving the rotary tillage blade to rotate to achieve the rotary tillage function. The design is reasonable, the rotary tillage transmission is simple and has few parts, which effectively reduces the manufacturing cost, reduces the difficulty of installation and maintenance, and reduces the overall weight to adapt to farming in high or hilly areas.

[0047] like Figure 2As shown, preferably, the transmission gear also includes a first-axis rotary tilling gear 212 and a reverse gear shaft rotary tilling gear 242; the first-axis rotary tilling gear 212 is arranged on the first axis 21; the reverse gear shaft rotary tilling gear 242 is arranged on the reverse gear shaft 24; both ends of the second-axis rotary tilling gear 224 and the reverse gear shaft rotary tilling gear 242 are a large and a small gear structure; the transmission assembly 2 is provided with a forward gear and a reverse gear to realize the forward and reverse rotation of the rotary tiller. In the forward gear, the first-axis rotary tilling gear 212 is meshed with the second-axis rotary tilling gear 224 for transmission connection, and the first-axis rotary tilling gear 212 is moved to the corresponding position, so that the first-axis rotary tilling gear 212 is meshed with the large end gear of the second-axis rotary tilling gear 224, and the small end gear of the second-axis rotary tilling gear 224 is meshed with the flat gear of the transition gear 271 for transmission, so as to realize the forward rotation of the rotary tilling main shaft 33; in the reverse gear, the first-axis rotary tilling gear 212, the reverse gear shaft rotary tilling gear 242 and the second-axis rotary tilling gear 224 are meshed with each other for transmission connection in sequence. Move the one-axis rotary tillage gear 212 to the corresponding position, so that the one-axis rotary tillage gear 212 is meshed and connected with the large end of the reverse gear shaft rotary tillage gear 242, the small end gear of the reverse gear shaft rotary tillage gear 242 is meshed and connected with the large end gear of the second-axis rotary tillage gear 224, and the small end gear of the second-axis rotary tillage gear 224 is meshed and connected with the flat gear of the transition gear 271, thereby realizing the reversal of the rotary tillage main shaft 33 and increasing the forward and reverse rotary tillage of the agricultural micro-tillage machine.

[0048] like Figure 1 , Figure 5 and Figure 8 As shown, preferably, the housing 1 also includes a shift fork shaft, a shift fork, a shift rod and a shift lever; the shift fork shaft is connected to the transmission assembly 2; one end of the shift fork is connected to the shift fork shaft, and the other end thereof is connected to the shift rod; the shift rod is connected to the shift rod; the shift fork shaft and the shift fork are located inside the housing 1; the shift rod is located outside the housing 1; one end of the shift rod is located inside the housing 1, and the other end thereof is located outside the housing 1; the shift fork shaft includes a reverse gear shift fork shaft, a rotary tillage fork shaft, a travel shift fork shaft, and a speed shift fork shaft, and each shift fork shaft is connected to a corresponding rotating shaft, and at the same time, the shift fork includes a reverse gear shift fork, a rotary tillage fork, a travel shift fork, and a speed shift fork, and each shift fork is connected to a corresponding shift fork shaft, and the corresponding shift lever includes a reverse gear lever, a rotary tillage gear lever, a travel gear lever, and a speed shift gear lever, and each gear lever is connected to a corresponding shift fork, so as to realize different working states of the micro-tillage agricultural machine. In addition, it should be noted that the fork shaft, shift fork, shift rod and gear lever are common parts of agricultural machinery, and their connection and shifting methods are very mature. Since they are not the improvement points of this application, they will not be introduced in detail here.

[0049] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A gearbox, characterized in that: include: Gearbox body (1); The transmission assembly (2) comprises a first shaft (21), a second shaft (22), a third shaft (23), a reverse gear shaft (24), a steering shaft (25), a drive shaft (26) and a transition shaft (27); the transmission assembly (2) is rotatably arranged in the gearbox body (1); the second shaft (22), the third shaft (23), the steering shaft (25) and the drive shaft (26) are sequentially connected in transmission; the first shaft (21), the reverse gear shaft (24), the second shaft (22), the third shaft (23) and the steering shaft (25) are sequentially connected in transmission; (23), the steering shaft (25) and the driving shaft (26) are sequentially distributed from the top to the bottom of the gearbox body (1); the transition shaft (27) is close to the two shafts (22) and is transmission-connected with the two shafts (22); the transmission assembly (2) is provided with a running gear and a reverse gear. When in the running gear, the first shaft (21) is transmission-connected with the two shafts (22); when in the reverse gear, the first shaft (21), the reverse gear shaft (24) and the two shafts (22) are transmission-connected in sequence; The transmission assembly (2) further comprises a two-axis rotary tillage gear (224); the two-axis rotary tillage gear (224) is arranged on the two shafts (22); the transmission assembly (2) further comprises a transition gear (271); the transition gear (271) is arranged on the transition shaft (27); one end of the transition gear (271) is meshed and transmission-connected with the two-axis rotary tillage gear (224).

2. The gearbox according to claim 1, characterized in that: The transmission assembly (2) further comprises a transmission gear; the transmission gear is located inside the gearbox body (1); the transmission gear comprises a first-shaft running gear (211), a second-shaft first-gear running gear (221), a second-shaft second-gear running gear (222) and a reverse gear (241); the first-shaft running gear (211) is arranged on the first shaft (21); the second-shaft first-gear running gear (221) and the second-shaft second-gear running gear (222) are arranged on the second shaft (22); the reverse gear (241) is arranged on the reverse gear shaft (24); when in the running gear, the first-shaft running gear (211) is meshed and transmission-connected with the second-shaft first-gear running gear (221) or the second-shaft second-gear running gear (222); when in the reverse gear, the first-shaft running gear (211), the reverse gear (241) and the second-shaft first-gear running gear (221) are meshed and transmission-connected.

3. The gearbox according to claim 2, characterized in that: The transmission gear also includes a two-shaft transmission gear (223), a three-shaft double-gear shifting gear (231), a three-shaft transmission gear (232), a steering intermediate gear (251), a steering gear (252) and a driving gear (261); the two-shaft transmission gear (223) is arranged on the two-shaft (22); the three-shaft double-gear shifting gear (231) and the three-shaft transmission gear (232) are arranged on the three-shaft (23); the steering intermediate gear (251) and the steering gear (252) are arranged on the steering shaft (25); the driving gear (261) is arranged on the driving shaft (26); the two-shaft transmission gear is meshed and transmission-connected with the three-shaft double-gear shifting gear (231); the three-shaft transmission gear (232) is meshed and transmission-connected with the steering intermediate gear (251); the steering gear (252) is meshed and transmission-connected with the driving gear (261).

4. The gearbox according to claim 3, characterized in that: The steering gear (252) is located at both ends of the steering shaft (25); and the driving gear (261) is located at both ends of the driving shaft (26).

5. The gearbox according to claim 4, characterized in that: The interior of the steering shaft (25) is a hollow structure; the steering shaft (25) further comprises a spring (253), a ball bearing shaft (254) and a pin (255); the spring (253) and the ball bearing shaft (254) are both arranged inside the steering shaft (25), wherein the spring (253) is located in the middle of the steering shaft (25), and the ball bearing shaft (254) is located at both ends of the steering shaft (25); the two ends of the spring (253) are respectively connected to the ball bearing shaft (25 4); the ejector pin (255) is slidably arranged on the gearbox body (1) in correspondence with the ejector ball shaft (254); one end of the ejector pin (255) is connected to an end of the ejector ball shaft (254) away from the spring (253), and the other end thereof is exposed on the outside of the gearbox body (1); a conical surface is provided on the surface of the ejector ball shaft (254); inner circular raceways are respectively provided between the steering gear (252) and the conical surface; and steel balls are provided on the inner circular raceways.

6. The gearbox according to claim 1, characterized in that: The invention also comprises a rotary tillage assembly (3); the rotary tillage assembly (3) comprises a rotary tillage housing (31), a rotary tillage transmission shaft (32) and a rotary tillage main shaft (33); one end of the rotary tillage housing (31) is connected to the gearbox housing (1); the rotary tillage main shaft (33) is rotatably arranged at one end of the rotary tillage housing (31) away from the gearbox housing (1); the axis direction of the rotary tillage main shaft (33) is consistent with the direction of the first shaft (21); the transition shaft (27) is located between the gearbox housing (1) and the second shaft (22); the rotary tillage transmission shaft (32) is rotatably arranged in the rotary tillage housing (31), one end of which is meshingly connected to one end of the transition gear (271) away from the second shaft rotary tillage gear (224) through a bevel gear, and the other end of which is meshingly connected to the middle part of the rotary tillage main shaft (33) through a bevel gear.

7. The gearbox according to claim 1, characterized in that: The transmission assembly (2) further comprises a first-axis rotary tilling gear (212) and a reverse gear shaft rotary tilling gear (242); the first-axis rotary tilling gear (212) is arranged on the first-axis (21); the reverse gear shaft rotary tilling gear (242) is arranged on the reverse gear shaft (24); the transmission assembly (2) is provided with a forward gear and a reverse gear; in the forward gear, the first-axis rotary tilling gear (212) is meshed and transmission-connected with the second-axis rotary tilling gear (224); in the reverse gear, the first-axis rotary tilling gear (212), the reverse gear shaft rotary tilling gear (242) and the second-axis rotary tilling gear (224) are meshed and transmission-connected in sequence.

8. The gearbox according to claim 1, characterized in that: The gearbox body (1) further comprises a shift fork shaft, a shift fork, a shift rod and a shift lever; the shift fork shaft is connected to the transmission assembly (2); one end of the shift fork is connected to the shift fork shaft, and the other end thereof is connected to the shift rod; the shift rod is connected to the shift rod; the shift fork shaft and the shift fork are located inside the gearbox body (1); the shift rod is located outside the gearbox body (1); one end of the shift rod is located inside the gearbox body (1), and the other end thereof is located outside the gearbox body (1).

9. An agricultural micro-tillage machine, characterized in that: It comprises a frame (4), an engine (5), a clutch (6), a running wheel (7) and a gearbox according to any one of claims 1 to 8; the gearbox and the engine (5) are both arranged on the frame (4); the engine (5) and the shaft (21) are connected by transmission via the clutch (6); the running wheel (7) is arranged on the drive shaft (26).

Images