Integrated rear box transmission mechanism and four-wheel riding mini-tiller

Abstract

The utility model relates to the field of riding type mini-tiller, concretely relates to a rear box integrated type transmission mechanism, including the integrated type rear box of setting in the rear side of four-wheel riding type mini-tiller, the integrated type rear box is equipped with transmission mechanism, transmission mechanism and the engine output shaft transmission connection of front side are used for respectively transmitting power to two rear wheel axle, and / or two front wheel axle, and / or rear -mounted implement, only need to manufacture the box body shell of integrated type rear box when producing, and the production cost is lower, the integrated type rear box satisfies the demand of walking drive and cutter drive, simultaneously makes transmission part all integration in integrated type rear box, and installation processing is convenient, and the later maintenance is convenient, the utility model also provides four-wheel riding type mini-tiller, adopts the rear box integrated type transmission mechanism.

Description

Technical Field

[0001] This utility model relates to the field of ride-on mini-tillers, specifically to a rear box integrated transmission mechanism and a four-wheel ride-on mini-tiller. Background Technology

[0002] The four-wheeled riding micro-tiller is a new type of agricultural machinery. It is smaller than a tractor and is widely used in hilly and mountainous terraced fields, greenhouses, orchards, tobacco ridge cultivation, paddy fields and other scenarios. Compared with hand-held micro-tillers, it also allows the operator to ride, which can greatly reduce labor intensity.

[0003] Existing four-wheeled riding mini-tillers have front and rear gearboxes on the front and rear frames, respectively. The gearboxes have corresponding transmission parts between them and the front and rear wheels, resulting in a dispersed transmission structure and numerous connecting parts. This not only makes manufacturing inconvenient but also makes it difficult to diagnose problems during maintenance. It may be necessary to disassemble the housings of both the front and rear gearboxes simultaneously to make a diagnosis, which makes maintenance inconvenient. Utility Model Content

[0004] In order to overcome the shortcomings of the existing technology, one of the purposes of this utility model is to provide an integrated transmission mechanism for the rear box, so as to solve the problem that the existing riding micro-tillers have a dispersed transmission structure and many connecting parts, which not only makes processing inconvenient, but also makes it difficult to diagnose problems during maintenance and is therefore inconvenient to maintain.

[0005] To achieve the above objectives, this utility model provides an integrated transmission mechanism for the rear box, including an integrated rear box disposed on the rear side of a four-wheeled riding micro-tiller. The integrated rear box is provided with a transmission mechanism, which is connected to the engine output shaft on the front side for transmitting power to the two rear wheel axles, and / or the two front wheel axles, and / or the rear implement.

[0006] The principle and beneficial effects of the technical solution are as follows: engine power is directly transmitted to the integrated rear box; compared with traditional front and rear gearboxes, this device only requires manufacturing the outer shell of the integrated rear box, resulting in lower production costs; the integrated rear box utilizes the transmission mechanism to reduce speed and increase torque, and the transmission mechanism can transmit power to the front axle, rear axle, and rear-mounted implement, specifically in the following combinations: transmission only to both rear axles, transmission only to the rear-mounted implement, transmission to both rear axles and both front axles, and transmission to both rear axles and the rear-mounted implement. The machine transmits power to two rear axles, two front axles, and a rear-mounted implement; these are respectively used for low-load driving (rear-wheel drive), stationary tillage, high-load driving (four-wheel drive), low-load driving and tillage, and high-load driving and tillage, thus meeting the needs of both walking drive and tool drive; at the same time, the entire transmission system is integrated into the integrated rear box, which is convenient for installation and processing, and also concentrates potential problems during use, facilitating later maintenance; this device integrates the traditional front and rear reduction gearboxes into the integrated rear box, which not only facilitates processing and installation during production, but also facilitates later maintenance.

[0007] In a preferred embodiment of this utility model, the transmission mechanism includes a gear shift assembly, a rear drive transmission assembly, a rear-mounted tool transmission assembly, and a front drive transmission assembly. The gear shift assembly is connected to the front engine output shaft, and the rear drive transmission assembly, the rear-mounted tool transmission assembly, and the front drive transmission assembly are all connected to the gear shift assembly.

[0008] The principle and beneficial effects are as follows: the transmission component is used to reduce the speed and provide gear shifting capability; the rear drive transmission component and the first output end of the transmission component are connected to transmit power to the two rear axles; the input end of the rear implement transmission component is connected to the second output end of the transmission component, and the output end is connected to the rear implement to transmit power to the rear implement; the input end of the front drive transmission component is connected to the third output end of the transmission mechanism to transmit power to the two front axles.

[0009] In a preferred embodiment of the present invention, the transmission assembly includes a first transmission gear set and a second transmission gear set. The first transmission gear set has a neutral gear, a reverse gear, and at least one forward gear. The second transmission gear set has at least a high-speed driving gear and a low-speed driving gear. The first transmission gear set and the second transmission gear set are connected in a transmission manner.

[0010] The principle and beneficial effects are as follows: The first gear set has at least one forward gear and one reverse gear. In this application, there are three forward gears, which can control the tiller to drive in different environments. The first gear set and the second gear set are connected in transmission. Based on the first gear set, at least a high-speed gear and a low-speed gear are added. That is, after the first gear set is shifted, it can be shifted again, making the power differentiation more detailed and improving the adaptability and passability in different environments.

[0011] In a preferred embodiment of this utility model, the first transmission gear set includes a transmission bevel gear, a first rotating shaft, a first shaft bevel gear, a first shaft first double gear, a first shaft second double gear, a second rotating shaft, a second shaft first gear, a second shaft second gear, a second shaft third gear, a second shaft fourth gear, a second shaft fifth gear, a reverse gear rotating shaft, a reverse gear first gear, and a reverse gear second gear; the first rotating shaft, the second rotating shaft, and the reverse gear rotating shaft are all rotatably mounted in the integrated rear housing; the rear end of the transmission bevel gear is connected to the engine output shaft; the first shaft bevel gear is fixed on the first rotating shaft and meshes with the transmission bevel gear; the first shaft first double gear and the first shaft second double gear are both slidably disposed on the first rotating shaft; the pinion of the first shaft first double gear is smaller than the pinion of the first shaft second double gear; the second shaft first gear, the second shaft second gear, the second shaft third gear, and the second shaft... The fourth gear and the fifth gear of the two shafts are both fixed on the second rotating shaft. The dimensions of the first gear, the second gear, and the third gear of the two shafts decrease sequentially. The fifth gear of the two shafts is larger than the fourth gear. The first gear of the two shafts can mesh with the pinion of the first double-tooth gear of the first shaft, and when they mesh, it is first gear. The second gear of the two shafts can mesh with the pinion of the second double-tooth gear of the first shaft, and when they mesh, it is second gear. The third gear of the two shafts can mesh with the large gear of the second double-tooth gear of the first shaft, and when they mesh, it is third gear. When neither the first double-tooth gear nor the second double-tooth gear of the first shaft is meshed, it is neutral. The first gear and the second gear of the reverse gear shaft are both fixed on the reverse gear rotating shaft. The second gear of the reverse gear shaft meshes with the second gear of the two shafts. The first gear of the reverse gear shaft can mesh with the large gear of the first double-tooth gear of the first shaft, and when they mesh, it is reverse gear.

[0012] The principle and beneficial effects are as follows: the transmission bevel gear is used to connect the main drive shaft, which can be achieved through universal joints, spline connections, etc.; the first rotating shaft, the second rotating shaft, and the reverse gear rotating shaft can adopt key shaft structures, such as spline shafts, flat key shafts, etc., to allow the double gears to slide axially and rotate with the shaft; while the fixed gears can be fixed by bushings, interference fits, etc.; the reverse gear, first gear, second gear, and third gear are switched by sliding the first double gear and the second double gear of the first shaft, wherein the first gear of the second shaft and the second shaft... The dimensions of the second gear and the third gear of the two shafts decrease sequentially, and the size of the pinion of the first double-tooth gear of the first shaft is smaller than that of the pinion of the second double-tooth gear of the first shaft. The principle of using the pinion to drive the large gear to reduce speed and increase torque, and the large gear to drive the pinion to increase speed, is used to achieve the speed switching between first, second and third gears. When the large gear of the first double-tooth gear of the first shaft meshes with the first gear of the reverse gear shaft, the power is transmitted to the second gear of the second shaft through the second gear of the reverse gear shaft, that is, an additional gear transmission is added, thereby realizing the change of direction and switching to reverse gear.

[0013] In a preferred embodiment of this utility model, the second transmission gear set includes a third rotating shaft, a three-axis double gear, a three-axis gear, a fourth rotating shaft, a four-axis first gear, a four-axis second gear, a fifth rotating shaft, a five-axis double gear, a sixth rotating shaft, a six-axis first gear, and a six-axis second gear; the third, fourth, fifth, and sixth rotating shafts are all rotatably mounted in the integrated rear housing; the three-axis gear is fixed on the third rotating shaft, and the three-axis double gear is slidably disposed on the third rotating shaft, the size of the three-axis double gear... All gears can be connected to the first transmission gear set to achieve at least two gears: a high-speed gear and a low-speed gear. The first gear and the second gear of the four-axis are both fixed on the fourth rotating shaft. The first gear of the four-axis meshes with the three-axis gear. The five-axis double-gear is fixed on the fifth rotating shaft, and the large gear of the five-axis double-gear meshes with the second gear of the four-axis. The first gear and the second gear of the six-axis are both fixed on the sixth rotating shaft, and the first gear of the six-axis meshes with the small gear of the five-axis double-gear.

[0014] The principle and beneficial effects are as follows: by sliding the three-axis double gear, the small gear and large gear of the double gear are respectively connected to the first transmission gear set for transmission, which can realize the switching between high and low speeds of travel and further adjust the rotation speed. The fourth shaft and the fifth shaft, as well as the gears set on them, are used to continue to transmit power and output it to the rear drive transmission assembly and the front drive transmission assembly.

[0015] In a preferred embodiment of this utility model, the rear drive transmission assembly includes a rear drive transmission shaft 1, a rear drive transmission shaft 2, a differential, and a rear drive gear. The rear drive transmission shaft 1 and the rear drive transmission shaft 2 are rotatably disposed on both sides of the integrated rear box. The differential is drivenly connected to the rear drive transmission shaft 1 and the rear drive transmission shaft 2, and is located between the two. The rear drive gear is fixed to the outside of the differential and is drivenly connected to the transmission assembly.

[0016] The principle and beneficial effects are as follows: the rear drive drive shaft one, the rear drive drive shaft two, and the differential combine to form a drive structure for two rear wheels, and are connected by the rear drive gear and the transmission assembly to realize the transmission of power.

[0017] In a preferred embodiment of the present invention, the front drive transmission assembly includes a six-axis bevel gear and a front drive bevel gear. The six-axis bevel gear is disposed in the transmission assembly, and the front drive bevel gear meshes with the six-axis bevel gear. The front drive bevel gear is used to transmit power forward.

[0018] The principle and beneficial effects are as follows: the six-axis bevel gear is set in the transmission assembly, the front drive bevel gear and the six-axis bevel gear mesh, and the power is transmitted forward after passing through the transmission assembly.

[0019] In a preferred embodiment of this utility model, the rear-mounted machine transmission assembly includes a rear-mounted gear, a rear-mounted first shaft, a rear-mounted first shaft gear, a rear-mounted first shaft double gear, a rear-mounted second shaft, a rear-mounted second shaft first gear, a rear-mounted second shaft second gear, a rear-mounted second shaft third gear, a rear-mounted third shaft, a rear-mounted third shaft first gear, a rear-mounted third shaft second gear, a rear-mounted fourth shaft, a rear-mounted fourth shaft gear, a rear-mounted fourth shaft bevel gear, and a rear-mounted bevel gear; the rear-mounted first shaft, the rear-mounted second shaft, the rear-mounted third shaft, and the rear-mounted fourth shaft are all... The transmission is rotatably mounted in the integrated rear housing; the first-shaft rear gear is connected to the transmission assembly; the first-shaft rear gear is fixed on the first-shaft rear gear, and the double-gear rear gear is slidably mounted on the first-shaft rear gear; the first-shaft rear gear meshes with the first-shaft rear gear; the first and second gears of the second-shaft rear gear are both fixed on the second-shaft rear gear, and the third gear of the second-shaft rear gear is slidably mounted on the second-shaft rear gear; the dimensions of the first gear of the second-shaft rear gear are specified. The first gear of the rear-mounted second shaft is larger than the second gear of the rear-mounted second shaft. The first gear of the rear-mounted second shaft can mesh with the small gear of the rear-mounted first shaft with double teeth; when meshed, this is the high-speed gear of the rear-mounted machine. The second gear of the rear-mounted second shaft can mesh with the large gear of the rear-mounted first shaft with double teeth; when meshed, this is the low-speed gear of the rear-mounted machine. The first gear and the second gear of the rear-mounted third shaft are both fixed to the rear-mounted third shaft. The first gear of the rear-mounted third shaft can mesh with the third gear of the rear-mounted second shaft. The rear-mounted fourth shaft gear... Both the rear four-axis bevel gear and the rear three-axis bevel gear are fixed on the rear four-axis; the rear four-axis bevel gear meshes with the rear three-axis second gear and can mesh with the rear two-axis third gear; when the rear two-axis third gear meshes with the rear three-axis first gear, the rear tool rotates in reverse; when the rear two-axis third gear meshes directly with the rear four-axis gear, the rear tool rotates in forward; the rear four-axis bevel gear meshes with the rear bevel gear, and the rear bevel gear is connected to the rear tool in a transmission connection.

[0020] The principle and beneficial effects are as follows: the rear gear of the first shaft meshes with the rear gear of the first shaft, allowing power to be transmitted backward; the first gear of the rear second shaft is larger than the second gear of the rear second shaft, and the large and small gears of the rear first shaft double-tooth mechanism are used to achieve high and low speed switching of the rear machine for different working scenarios; the rear third shaft is used for forward and reverse switching. When the third gear of the rear second shaft meshes with the first gear of the rear third shaft, the power is transmitted to the rear fourth shaft gear through the second gear of the rear third shaft, adding a direction conversion and realizing a change in direction. By sliding the third gear of the rear second shaft, the forward and reverse switching is achieved between the first gear of the rear third shaft and the rear fourth shaft gear.

[0021] In a preferred embodiment of the present invention, the device further includes a first gear shifter, a second gear shifter, and a four-wheel drive shift lever. The first gear shifter is used to switch between neutral, reverse, and at least one forward gear. The second gear shifter is used to switch between at least two gears: a high-speed driving gear and a low-speed driving gear. The four-wheel drive shift lever is used to control the disengagement or engagement of the front-wheel drive transmission assembly and the transmission assembly.

[0022] The principle and beneficial effects are as follows: the first gear shifter has a relatively existing structure and is widely and maturely used in agricultural machinery and automobiles. Its purpose is to switch gears, and the first gear shifter will only be in neutral, at least one forward gear, or reverse gear at any given time; the second gear shifter is used to switch between at least two gears: high-speed driving gear and low-speed driving gear; the four-wheel drive conversion lever is used to control the disengagement or engagement of the front-wheel drive transmission component and the transmission component, thereby realizing the conversion between rear-wheel drive and four-wheel drive.

[0023] The second objective of this utility model is to provide a four-wheeled riding micro-tiller that adopts the aforementioned rear box integrated transmission mechanism.

[0024] The principle and beneficial effects are as follows: by adopting the integrated rear box, the transmission structure can be integrated together, which not only facilitates production and installation and reduces costs, but also facilitates later maintenance. Attached Figure Description

[0025] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below.

[0026] Figure 1 This is a structural schematic diagram of an embodiment of the rear box integrated transmission mechanism of this utility model.

[0027] Figure 2 This is a schematic diagram of the transmission mechanism described in an embodiment of the rear box integrated transmission mechanism of this utility model.

[0028] Figure 3 This is a schematic diagram of the first speed-changing gear set in an embodiment of the rear box integrated transmission mechanism of this utility model.

[0029] Figure 4 This is a side view of the first speed-changing gear set in an embodiment of the rear box integrated transmission mechanism of this utility model.

[0030] Figure 5 This is a first-view structural schematic diagram of the second speed-changing gear set in an embodiment of the rear box integrated transmission mechanism of this utility model.

[0031] Figure 6 This is a structural schematic diagram of the second speed-changing gear set from a second perspective in an embodiment of the rear box integrated transmission mechanism of this utility model.

[0032] Figure 7 This is a schematic diagram of the rear drive transmission assembly described in an embodiment of the rear box integrated transmission mechanism of this utility model.

[0033] Figure 8 This is a first-view structural schematic diagram of the rear-mounted machine transmission component described in an embodiment of the rear box integrated transmission mechanism of this utility model.

[0034] Figure 9 This is a second-view structural schematic diagram of the rear-mounted machine transmission assembly described in an embodiment of the rear box integrated transmission mechanism of this utility model.

[0035] Figure 10 This is a structural schematic diagram of an embodiment of the four-wheeled riding micro-tiller of this utility model.

[0036] The reference numerals in the accompanying drawings include: 1 Integrated rear box, 2 Main drive shaft, 3 Oil clutch, 4 First gear set, 41 Transmission bevel gear, 42 First shaft, 43 First shaft bevel gear, 44 First shaft first double gear, 45 First shaft second double gear, 46 Second shaft, 47 Second shaft first gear, 48 Second shaft second gear, 49 Second shaft third gear, 410 Second shaft fourth gear, 411 Second shaft fifth gear, 412 Reverse shaft, 413 Reverse shaft first gear, 414 Reverse shaft second gear, 5 Second gear set, 51 Third shaft, 52 Third shaft double gear, 53 Third shaft gear, 54 Fourth shaft, 55 Fourth shaft first gear, 56 Fourth shaft second gear, 57 Fifth shaft, 58 Fifth shaft double gear, 59 Sixth shaft, 510 Sixth shaft first gear, 511 Sixth shaft second gear, 6 Rear drive transmission assembly, 61 Rear drive transmission shaft 1, 62 Rear drive transmission shaft 2, 63 Differential, 64 Rear drive gear, 7 Front drive transmission assembly, 71 Six-axis bevel gear, 72 Front drive bevel gear, 8 Rear-mounted tool transmission assembly, 81 Rear gear of shaft 1, 82 Rear shaft 1, 83 Rear shaft 1 gear, 84 Rear shaft 1 double gear, 85 Rear shaft 2, 86 Rear shaft 2 first gear, 87 Rear shaft 2 second gear, 88 Rear shaft 2 third gear, 89 Rear shaft 3, 810 Rear shaft 3 first gear, 811 Rear shaft 3 second gear, 812 Rear shaft 4, 813 Rear shaft 4 gear, 814 Rear shaft 4 bevel gear, 815 Rear bevel gear, 9 First gear shifter, 10 Second gear shifter, 11 Four-wheel drive shift lever, 12 Reverse gear shift fork, 13 Second and third gear shift fork, 14 High and low speed shift fork, 15 Four-wheel drive shift fork. Detailed Implementation

[0037] The embodiments of this utility model are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the embodiments of this utility model, and should not be construed as limiting the utility model.

[0038] In the description of the embodiments of this utility model, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing the embodiments of this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0039] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the stated features. In the description of the embodiments of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0040] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0041] Example 1 As attached Figure 1 As shown, this utility model provides an integrated rear box transmission mechanism and a four-wheeled riding micro-tiller: It includes an integrated rear box 1 located at the rear of the four-wheeled riding micro-tiller; the front of the integrated rear box 1 is connected to the engine output shaft on the front side via a main drive shaft 2; the integrated rear box 1 is equipped with a transmission mechanism connected to the main drive shaft 2, used to transmit power to the two rear wheel axles, and / or the two front wheel axles, and / or the rear-mounted implement, specifically in the following combinations: transmission only to the two rear wheel axles, transmission only to the rear-mounted implement, transmission to the two rear wheel axles and two... The transmission shaft consists of a front axle, two rear axles, and a rear-mounted implement; it is used for low-load driving (rear-wheel drive), stationary tillage, high-load driving (four-wheel drive), low-load driving and tillage, and high-load driving and tillage, respectively, thus meeting the needs of walking drive and tool drive; the main drive shaft 2 is used to directly transmit engine power to the integrated rear box 1 on the rear side, so that the entire transmission part is integrated in the integrated rear box 1, which is convenient for installation and processing, and also concentrates possible problems, making it convenient for later maintenance.

[0042] As attached Figure 2 As shown, in this embodiment, an oil clutch 3 is provided between the transmission mechanism and the main drive shaft 2. The oil clutch 3 is located in the integrated rear box 1. The oil clutch 3 has a long service life and small size, and can be placed in the integrated rear box 1. Since the micro-tiller has low power requirements, a single-cylinder engine can be used. The transmission mechanism includes a transmission assembly, a rear drive transmission assembly 6, a rear implement transmission assembly 8, and a front drive transmission assembly 7. The transmission assembly includes a first transmission gear set 4 and a second transmission gear set 5. The first transmission gear set 4 has neutral, reverse, first gear, second gear, and third gear, that is, three forward gears and one reverse gear, which can control the micro-tiller to drive in different environments. The second transmission gear set 5 has a high-speed driving gear and a low-speed driving gear. The first transmission gear set 4 and the second transmission gear set 5 are connected, that is, there are a total of six forward gears and two reverse gears, which makes the power differentiation more detailed and improves the adaptability and passability in different environments.

[0043] As attached Figure 3 and Figure 4As shown, in this embodiment, the first transmission gear set 4 includes a transmission bevel gear 41, a first rotating shaft 42, a first shaft bevel gear 43, a first shaft first double gear 44, a first shaft second double gear 45, a second rotating shaft 46, a second shaft first gear 47, a second shaft second gear 48, a second shaft third gear 49, a second shaft fourth gear 410, a second shaft fifth gear 411, a reverse gear rotating shaft 412, a reverse gear shaft first gear 413, and a reverse gear shaft second gear 414; the first rotating shaft 42, the second rotating shaft 46, and the reverse gear rotating shaft 412 are all rotatably mounted in the integrated rear housing 1, and all adopt a key shaft structure that can slide relative to each other; the rear end of the transmission bevel gear 41 is connected to the main transmission shaft 2, and the first shaft bevel gear 43 is fixed to the first shaft 2. The first double gear 44 and the second double gear 45 of the first shaft are slidably disposed on the first shaft 42; the pinion of the first double gear 44 is smaller than the pinion of the second double gear 45; the first gear 47, the second gear 48, the third gear 49, the fourth gear 410, and the fifth gear 411 of the second shaft are all fixed on the second shaft 46, wherein the dimensions of the first gear 47, the second gear 48, and the third gear 49 decrease sequentially; the fifth gear 411 is larger than the fourth gear 410; the first gear 47 can mesh with the first shaft 42. The first double gear 44 engages with the pinion, and when they are engaged, it is first gear; the second gear 48 of the second shaft can engage with the pinion of the first shaft second double gear 45, and when they are engaged, it is second gear; the third gear 49 of the second shaft can engage with the large gear of the first shaft second double gear 45, and when they are engaged, it is third gear; when neither the first double gear 44 nor the first double gear 45 of the first shaft is engaged, it is neutral; the first gear 413 and the second gear 414 of the reverse gear shaft are both fixed on the reverse gear shaft 412, and the second gear 414 of the reverse gear shaft engages with the second gear 48 of the second shaft; the first gear 413 of the reverse gear shaft can engage with the large gear of the first double gear 44 of the first shaft, and when they are engaged, it is reverse gear; the transmission bevel gear... Wheel 41 is used to connect the main drive shaft 2, and can be connected by universal joint, spline connection or other means; the first rotating shaft 42, the second rotating shaft 46 and the reverse gear rotating shaft 412 all adopt a key shaft structure that can slide relative to each other, such as spline shaft, flat key shaft, etc., so that the double gear can slide axially and follow the shaft rotation; while the fixed gears can be fixed by bushing, interference fit or other means; reverse gear, first gear, second gear and third gear are switched by sliding the first double gear 44 and the second double gear 45 of the first shaft, wherein the size of the first gear 47, the second gear 48 and the third gear 49 of the second shaft decreases in sequence, and the size of the pinion of the first double gear 44 of the first shaft is smaller than the pinion of the second double gear 45 of the first shaft;The system utilizes the principle of a small gear driving a large gear to reduce speed and increase torque, and a large gear driving a small gear to increase speed, thereby achieving speed switching between first, second, and third gears. When the large gear of the first double-gear 44 on the first shaft meshes with the first gear 413 on the reverse gear shaft, power is transmitted through the second gear 414 on the reverse gear shaft to the second gear 48 on the second shaft, adding an extra gear transmission, thus changing direction and switching to reverse gear.

[0044] The integrated rear box 1 is also equipped with a first gear shifter 9. The first gear shifter 9 is connected to a reverse gear shift fork 12 and a second and third gear shift fork 13, and can control the two to slide along the axis of the first rotating shaft 42 in the integrated rear box 1. The reverse gear shift fork 12 is engaged between the large and small gears of the first double gear 44 of the first shaft; the second and third gear shift fork 13 is engaged between the large and small gears of the second double gear 45 of the first shaft. The structure of the first gear shifter 9 is relatively existing and has been widely and maturely used in agricultural machinery and automobiles. Its purpose is to control the sliding of the reverse gear shift fork 12 and the second and third gear shift fork 13, and the first gear shifter 9 will only be in one of the following gears at any given time: neutral, first gear, second gear, third gear, and reverse gear.

[0045] As attached Figure 5 and Figure 6As shown, in this embodiment, the second transmission gear set 5 includes a third rotating shaft 51, a three-axis double gear 52, a three-axis gear 53, a fourth rotating shaft 54, a four-axis first gear 55, a four-axis second gear 56, a fifth rotating shaft 57, a five-axis double gear 58, a sixth rotating shaft 59, a six-axis first gear 510, and a six-axis second gear 511. The third rotating shaft 51, the fourth rotating shaft 54, the fifth rotating shaft 57, and the sixth rotating shaft 59 are all rotatably mounted in the integrated rear housing 1 and all adopt a keyed shaft structure that can slide relative to each other. The three-axis gear 53 is fixed on the third rotating shaft 51, and the three-axis double gear 52 is slidably disposed on the third rotating shaft 51. The small gear of the three-axis double gear 52 can mesh with the two-axis fifth gear 411, and when they mesh, it is the high-speed gear for travel. The large gear of the three-axis double gear 52 can mesh with the two-axis fourth gear 410. When the two gears are engaged, it is in low-speed driving mode. The first gear 55 and the second gear 56 of the four-axis are both fixed on the fourth rotating shaft 54. The first gear 55 of the four-axis meshes with the three-axis gear 53. The double gear 58 of the five-axis is fixed on the fifth rotating shaft 57, and the large gear of the double gear 58 meshes with the second gear 56 of the four-axis. The first gear 510 and the second gear 511 of the six-axis are both fixed on the sixth rotating shaft 59. The first gear 510 of the six-axis meshes with the small gear of the double gear 58 of the five-axis. The second gear 511 of the six-axis is used to transmit power to the two rear wheels. Since the fifth gear 411 of the two-axis is larger than the fourth gear 410 of the two-axis, by sliding the double gear 52 of the three-axis, the small gear and the large gear of the double gear mesh with the two gears respectively, the high and low speeds of driving can be switched, and the speed can be further adjusted.

[0046] The integrated rear box 1 is also provided with a second gear shifter 10. The second gear shifter 10 is connected to a high-low speed shift fork 14 and can control the high-low speed shift fork 14 to slide along the axial direction of the third rotating shaft 51 in the integrated rear box 1. The high-low speed shift fork 14 is engaged between the large and small gears of the three-axis double gear 52. The second gear shifter 10 is used to slide the high-low speed shift fork 14 to realize the conversion between high and low speed.

[0047] As attached Figure 7As shown, in this embodiment, a front-drive transmission assembly 7 and a rear-drive transmission assembly 6 are also included. The rear-drive transmission assembly 6 includes a rear-drive drive shaft 61, a rear-drive drive shaft 62, a differential 63, and a rear-drive gear 64. Both the rear-drive drive shaft 61 and the rear-drive drive shaft 62 are rotatably mounted in the integrated rear housing 1. The differential 63 is fixedly connected to and located between the rear-drive drive shafts 61 and 62. The rear-drive gear 64 is fixed to the outside of the differential 63 and meshes with the sixth-axis second gear 511. The rear-drive drive shafts 61, 62, and 63 combine to form the two rear wheels. The drive structure transmits power through the meshing of the rear drive gear 64 and the sixth-axis second gear 511. The differential 63 allows the two rear wheels to travel at different speeds, preventing tire slippage, wear, or damage to the transmission system. The front drive transmission assembly 7 transmits power forward to the two front wheels. The front drive transmission assembly 7 includes a sixth-axis bevel gear 71 and a front drive bevel gear 72. The sixth-axis bevel gear 71 is fixed on the sixth rotating shaft 59. The front drive bevel gear 72 meshes with the sixth-axis bevel gear 71, and the front drive bevel gear 72 transmits power forward. The meshing of the sixth-axis bevel gear 71 and the front drive bevel gear 72 transmits power forward.

[0048] The integrated rear box 1 is also provided with a four-wheel drive conversion lever 11. The four-wheel drive conversion lever 11 is connected to a four-wheel drive shift fork 15 and can control the four-wheel drive shift fork 15 to slide along the axis of the sixth rotating shaft 59 in the integrated rear box 1. The four-wheel drive shift fork 15 is engaged with the six-axis bevel gear 71. The four-wheel drive conversion lever 11 is used to slide the four-wheel drive shift fork 15. By sliding the six-axis bevel gear 71, it can be made to mesh or disengage with the front drive bevel gear 72, thereby realizing the conversion between rear drive and four drive.

[0049] As attached Figure 8 and Figure 9As shown, in this embodiment, a rear-mounted tool transmission assembly 8 is also included. The rear-mounted tool transmission assembly 8 is connected to the transmission assembly for driving the rear-mounted tool to rotate. The rear-mounted tool transmission assembly 8 includes a first-axis rear gear 81, a second-axis rear gear 82, a third-axis rear gear 83, a double-gear rear gear 84, a second-axis rear gear 85, a first gear 86, a second gear 87, a third gear 88, a third-axis rear gear 89, a first gear 810, a second gear 811, a fourth-axis rear gear 812, a fourth-axis rear gear 813, a fourth-axis rear bevel gear 814, and a rear bevel gear 815. The rear first-axis 82, the second-axis rear gear 85, the third-axis rear gear 89, and the fourth-axis rear gear 812 are also included. All 12 are rotatably mounted in the integrated rear housing 1; the first-shaft rear gear 81 is fixed on the first rotating shaft 42; the rear first-shaft gear 83 is fixed on the rear first-shaft 82, and the rear first-shaft double gear 84 is slidably mounted on the rear first-shaft 82; the rear first-shaft gear 83 and the first-shaft rear gear 81 mesh; the rear second-shaft first gear 86 and the rear second-shaft second gear 87 are both fixed on the rear second-shaft 85, and the rear second-shaft third gear 88 is slidably mounted on the rear second-shaft 85; the rear second-shaft first gear 86 is larger than the rear second-shaft second gear 87, and the rear second-shaft first gear 86 can mesh with the pinion of the rear first-shaft double gear 84, and when the two mesh, it is a rear-mounted mechanism. It has a high-speed gear; the rear-mounted second gear 87 can mesh with the large gear of the rear-mounted first-mounted double-gear 84, and when the two mesh, it is the low-speed gear of the rear-mounted machine; the rear-mounted third-mounted first gear 810 and the rear-mounted third-mounted second gear 811 are both fixed on the rear-mounted third shaft 89, and the rear-mounted third-mounted first gear 810 can mesh with the rear-mounted second-mounted third gear 88; the rear-mounted fourth-mounted gear 813 and the rear-mounted fourth-mounted bevel gear 814 are both fixed on the rear-mounted fourth-mounted shaft 812; the rear-mounted fourth-mounted gear 813 meshes with the rear-mounted third-mounted second gear 811, and can also mesh with the rear-mounted second-mounted third gear 88; when the rear-mounted second-mounted third gear 88 and the rear-mounted third-mounted first gear 810 mesh, it is the reverse gear of the rear-mounted machine; when the rear-mounted... When the second-axis third gear 88 and the rear-mounted fourth-axis gear 813 directly mesh, the rear-mounted tool rotates in the forward direction. The rear-mounted fourth-axis bevel gear 814 and the rear-mounted bevel gear 815 mesh, and the rear-mounted bevel gear 815 is connected to the rear-mounted tool through a universal joint. The first-axis rear-mounted gear 81 and the rear-mounted first-axis gear 83 mesh, allowing power to be transmitted directly to the rear after passing through the transmission bevel gear 41, the first-axis bevel gear 43, and the first rotating shaft 42. This transmission does not participate in the shifting of the travel transmission, allowing the speed of the rear-mounted tool to be controlled separately from the speed of the travel wheels. The rear-mounted second-axis first gear 86 is larger than the rear-mounted second-axis second gear 87, and the large and small gears of the rear-mounted first-axis double-gear 84 are used to realize the high and low speed switching of the rear-mounted tool for use in different working scenarios.The rear three-axis 89 is used for forward and reverse rotation switching. When the rear two-axis third gear 88 and the rear three-axis first gear 810 mesh, the power is transmitted to the rear four-axis gear 813 via the rear three-axis second gear 811, adding a direction conversion and achieving a change in direction. By sliding the rear two-axis third gear 88, the system switches between the rear three-axis first gear 810 and the rear four-axis gear 813, achieving forward and reverse rotation switching.

[0050] This application transmits power to the integrated rear box 1 through the main drive shaft 2. The integrated rear box 1 integrates functions such as reducing speed and increasing torque, shifting, two-wheel drive and four-wheel drive conversion, and driving rear-mounted implements. The transmission structure of the above functions is integrated into one box, which reduces production costs and installation and processing costs, and concentrates the problems that may occur during use, making it convenient for later maintenance.

[0051] Example 2 As attached Figure 10 As shown: Based on the first embodiment, this utility model also provides a four-wheel riding micro-tiller, which adopts the rear box integrated transmission mechanism; the transmission structure can be integrated together, which is convenient for production and installation, reduces costs, and facilitates later maintenance.

[0052] The preferred embodiments of this application have been described in detail above with reference to the accompanying drawings. Typical known structures and common knowledge techniques in the preferred embodiments have not been described in detail here. Those skilled in the art can improve and implement the technical solution of this utility model based on the inspiration given in these embodiments and their own capabilities. Some typical known structures, known methods or common knowledge techniques should not be obstacles for those skilled in the art to implement this application.

[0053] The scope of protection claimed in this application shall be determined by the contents of its claims. The contents of the utility model description, specific embodiments, and drawings are used to interpret the claims.

[0054] Within the scope of the technical concept of this application, several modifications can be made to the specific implementation of this application, and these modified implementations should also be considered within the protection scope of this application.

Claims

1. A rear-box integrated transmission mechanism, characterized in that: It includes an integrated rear box located at the rear of a four-wheeled riding micro-tiller, wherein a transmission mechanism is provided in the integrated rear box, and the transmission mechanism is connected to the engine output shaft at the front for transmitting power to the two rear wheel axles, and / or the two front wheel axles, and / or the rear implement.

2. The rear box integrated transmission mechanism according to claim 1, characterized in that: The transmission mechanism includes a gearbox assembly, a rear-drive transmission assembly, a rear-mounted implement transmission assembly, and a front-drive transmission assembly. The gearbox assembly is connected to the front engine output shaft, and the rear-drive transmission assembly, the rear-mounted implement transmission assembly, and the front-drive transmission assembly are all connected to the gearbox assembly.

3. The rear box integrated transmission mechanism according to claim 2, characterized in that: The transmission assembly includes a first transmission gear set and a second transmission gear set. The first transmission gear set has a neutral gear, a reverse gear, and at least one forward gear. The second transmission gear set has at least a high-speed driving gear and a low-speed driving gear. The first transmission gear set and the second transmission gear set are connected in a transmission connection.

4. The rear box integrated transmission mechanism according to claim 3, characterized in that: The first transmission gear set includes a transmission bevel gear, a first rotating shaft, a first shaft bevel gear, a first shaft double gear, a first shaft second double gear, a second rotating shaft, a second shaft first gear, a second shaft second gear, a second shaft third gear, a second shaft fourth gear, a second shaft fifth gear, a reverse gear rotating shaft, a reverse gear first gear, and a reverse gear second gear; The first rotating shaft, the second rotating shaft, and the reverse gear rotating shaft are all rotatably mounted in the integrated rear box; The rear end of the transmission bevel gear is connected to the engine output shaft. The first shaft bevel gear is fixed on the first rotating shaft and meshes with the transmission bevel gear. The first double tooth and the second double tooth of the first shaft are both slidably disposed on the first rotating shaft. The pinion of the first double tooth of the first shaft is smaller than the pinion of the second double tooth of the first shaft. The first, second, third, fourth, and fifth gears of the two-axis shaft are all fixed on the second rotating shaft. The dimensions of the first, second, and third gears decrease sequentially; the fifth gear is larger than the fourth gear. The first gear can mesh with the pinion of the first double-tooth gear on the first shaft, and when meshed, it is in first gear. The second gear can mesh with the pinion of the second double-tooth gear on the first shaft, and when meshed, it is in second gear. The third gear can mesh with the large gear of the second double-tooth gear on the first shaft, and when meshed, it is in third gear. When neither the first nor the second double-tooth gear on the first shaft is engaged, it is in neutral. The first reverse gear and the second reverse gear are both fixed on the reverse gear shaft. The second reverse gear meshes with the second gear of the second shaft. The first reverse gear can mesh with the large gear of the first double-tooth gear of the first shaft. When the two mesh, it is in reverse gear.

5. The rear box integrated transmission mechanism according to claim 3, characterized in that: The second gear set includes a third shaft, a three-axis double gear, a three-axis gear, a fourth shaft, a four-axis first gear, a four-axis second gear, a fifth shaft, a five-axis double gear, a sixth shaft, a six-axis first gear, and a six-axis second gear; The third, fourth, fifth, and sixth rotating shafts are all rotatably mounted in the integrated rear box; The three-axis gear is fixed on the third rotating shaft, and the three-axis double gear is slidably arranged on the third rotating shaft. Both the large and small gears of the three-axis double gear can be connected to the first transmission gear set for transmission, so as to realize at least two gears for high-speed travel and low-speed travel. Both the first gear and the second gear of the four-axis are fixed on the fourth rotating shaft; the first gear of the four-axis meshes with the gear of the three-axis; The five-axis double gear is fixed on the fifth rotating shaft, and the large gear of the five-axis double gear meshes with the second gear of the four-axis. Both the first gear and the second gear of the six-axis are fixed on the sixth rotating shaft, and the first gear of the six-axis meshes with the pinion of the five-axis double-tooth gear.

6. The rear box integrated transmission mechanism according to claim 2, characterized in that: The rear drive transmission assembly includes a rear drive drive shaft 1, a rear drive drive shaft 2, a differential, and a rear drive gear. The rear drive drive shaft 1 and the rear drive drive shaft 2 are rotatably mounted on both sides of the integrated rear box. The differential is driven by the rear drive drive shaft 1 and the rear drive drive shaft 2, and is located between them. The rear drive gear is fixed to the outside of the differential and is driven by the transmission assembly.

7. The rear box integrated transmission mechanism according to claim 2, characterized in that: The front drive transmission assembly includes a six-axis bevel gear and a front drive bevel gear. The six-axis bevel gear is disposed in the transmission assembly. The front drive bevel gear and the six-axis bevel gear mesh, and the front drive bevel gear is used to transmit power forward.

8. The rear box integrated transmission mechanism according to claim 2, characterized in that: The rear-mounted machine transmission assembly includes a rear gear on a single shaft, a rear first shaft, a rear first shaft gear, a rear first shaft double gear, a rear second shaft, a rear second shaft first gear, a rear second shaft second gear, a rear second shaft third gear, a rear third shaft, a rear third shaft first gear, a rear third shaft second gear, a rear fourth shaft, a rear fourth shaft gear, a rear fourth shaft bevel gear, and a rear bevel gear; The rear-mounted first shaft, the rear-mounted second shaft, the rear-mounted third shaft, and the rear-mounted fourth shaft are all rotatably mounted in the integrated rear box; The rear gear on the shaft and the transmission assembly are connected in a transmission connection. The rear-mounted first-shaft gear is fixed on the rear-mounted first-shaft, and the rear-mounted first-shaft double-tooth gear is slidably disposed on the rear-mounted first-shaft; the rear-mounted first-shaft gear and the first-shaft rear-mounted gear mesh. The first gear and the second gear of the rear-mounted second shaft are both fixed on the rear-mounted second shaft, and the third gear of the rear-mounted second shaft is slidably disposed on the rear-mounted second shaft; the first gear of the rear-mounted second shaft is larger in size than the second gear of the rear-mounted second shaft, and the first gear of the rear-mounted second shaft can mesh with the small gear of the rear-mounted first shaft with double teeth, and when the two mesh, it is the high-speed gear of the rear-mounted machine tool; The second gear of the rear dual shaft can mesh with the large gear of the rear single shaft with double teeth. When the two mesh, it is the low speed gear of the rear machine. The first gear and the second gear of the rear three-axis are both fixed on the rear three-axis, and the first gear of the rear three-axis can mesh with the third gear of the rear two-axis; Both the rear four-axis gear and the rear four-axis bevel gear are fixed on the rear four-axis; the rear four-axis gear meshes with the rear three-axis second gear and can also mesh with the rear two-axis third gear; when the rear two-axis third gear meshes with the rear three-axis first gear, the rear machine rotates in reverse; when the rear two-axis third gear meshes directly with the rear four-axis gear, the rear machine rotates in forward. The rear four-axis bevel gear meshes with the rear bevel gear, and the rear bevel gear is connected to the rear tool for transmission.

9. The rear box integrated transmission mechanism according to claim 3, characterized in that: It also includes a first shifter, a second shifter, and a four-wheel drive shift lever, wherein the first shifter is used to switch between neutral, reverse, and at least one forward gear; The second gear shifter is used to switch between at least two gears: high speed and low speed. The four-wheel drive shift lever is used to control the disengagement or engagement of the front-wheel drive transmission assembly and the transmission assembly.

10. A four-wheeled riding micro-tiller, characterized in that: The rear box integrated transmission mechanism as described in any one of claims 1 to 9 is adopted.

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