Riding type mini-tiller

Abstract

The utility model belongs to the technical field of agricultural machinery, and particularly relates to a riding type mini-tiller which comprises a walking mechanism, the walking mechanism comprises a front wheel shaft and a rear wheel shaft, the front wheel shaft is detachably connected with a front walking wheel or a tilling mechanism, the rear wheel shaft is detachably connected with a rear walking wheel, and the rear wheel shaft is detachably connected with a rear tilling mechanism. The outer diameter of the rear walking wheel is larger than that of the front walking wheel or the tillage mechanism. The mini-tiller has the aims that when the mini-tiller runs or tills, compared with a rear wheel and a front wheel, the stress is small, the overall gravity center of the mini-tiller can be lowered by arranging the front walking wheel with the small outer diameter, the stability during running and tilling is improved, the contact face between the rear walking wheel and the ground is larger by arranging the rear walking wheel with the large outer diameter, the road holding force is better, and the rear walking wheel is not prone to falling off when tilling is conducted in a muddy field. The high trafficability and the good anti-skid performance are realized.

Description

Technical Field

[0001] The utility model relates to the technical field of agricultural machinery, in particular to a riding micro-tillage machine. Background Art

[0002] For a four-wheeled riding micro-tiller, the operator can sit in the driver's seat to control the micro-tiller to till or drive. There is no need to hold hands or apply downward force, which greatly reduces the labor intensity. However, the four-wheeled riding micro-tiller still has some shortcomings when in use. When the riding micro-tiller is tilling on muddy ground, it is easy to slip when accelerating and the controllability is poor. Utility Model Content

[0003] In order to overcome the deficiencies of the prior art, the utility model aims to provide a riding micro-tillage machine which is less likely to slip in muddy ground by setting a traveling mechanism with small front wheels and large rear wheels, thereby improving the stability during driving and tilling.

[0004] The technical solution adopted by the utility model is as follows:

[0005] A riding micro-tillage machine comprises a traveling mechanism, wherein the traveling mechanism comprises a front wheel axle and a rear wheel axle, the front wheel axle is detachably connected to a front traveling wheel or a tillage mechanism, the rear wheel axle is detachably connected to a rear traveling wheel, and the outer diameter of the rear traveling wheel is greater than the outer diameter of the front traveling wheel or the tillage mechanism.

[0006] Compared with the prior art, the beneficial effects of the present invention are:

[0007] When the tiller is traveling or tilling, the front wheels are subjected to less force than the rear wheels. By setting a front traveling wheel with a smaller outer diameter, the overall center of gravity of the tiller can be lowered, and the stability during traveling and tilling can be improved. By setting a rear traveling wheel with a larger outer diameter, the contact area between the rear traveling wheel and the ground is larger, and the grip is better. When tilling in mud, it has a higher passability and good anti-skid performance.

[0008] In a preferred embodiment of the utility model, the outer diameter of the front running wheel is in the range of 300-560 mm, the outer diameter of the rear running wheel is in the range of 400-650 mm, and the outer diameter of the tilling mechanism is in the range of 300-500 mm.

[0009] Beneficial effects: The inventors have found that by setting the front running wheels, rear running wheels and tillage mechanism of the above-mentioned sizes, better grip and anti-skid performance are achieved.

[0010] As a preferred embodiment of the present invention, the speed ratio of the front axle to the rear axle is in the range of 1.3 to 2.17:1.

[0011] Beneficial effects: The inventors found that when tilling, the front and rear speed ratio range is controlled within the above range, a suitable tillage depth is achieved, thereby improving the tillage effect.

[0012] As a preferred embodiment of the utility model, the front walking wheel and the tillage mechanism are fixedly connected with a connecting pipe, the connecting pipe is sleeved on the front wheel axle, the front wheel axle and the connecting pipe are provided with through holes, and connecting pieces are inserted into the through holes to fixedly connect the front wheel axle and the connecting pipe.

[0013] Beneficial effect: by setting the front wheel axle and the connecting pipe, after the connecting pipe is inserted into the front wheel axle, it can be installed or disassembled by bolts, so that the front walking wheel and the tillage mechanism can be replaced conveniently.

[0014] As a preferred embodiment of the utility model, it also includes a front gearbox, a rear gearbox and a first transmission shaft. The front gearbox is transmission-connected to the rear gearbox via the first transmission shaft. The front gearbox drives the front wheel axle, and the rear gearbox drives the rear wheel axle.

[0015] Beneficial effects: By setting up the front gearbox and the rear gearbox, the front wheel axle and the rear wheel axle can be changed speed independently, multiple walking and tilling modes can be switched, and the speed of the tilling mechanism can be adjusted according to the hardness of the soil, which is suitable for various tilling and walking scenes.

[0016] As a preferred embodiment of the utility model, the front gearbox includes a front power output shaft and a front reduction shaft, the front power output shaft is fixedly connected with a first bevel gear, the upper end of the front reduction shaft is fixedly connected with a second bevel gear meshing with the first bevel gear, the front wheel shaft is fixedly connected with a fourth bevel gear, and the lower end of the front reduction shaft is fixedly connected with a third bevel gear meshing with the fourth bevel gear; the number of teeth of the first bevel gear is smaller than the number of teeth of the second bevel gear, and the number of teeth of the third bevel gear is smaller than the number of teeth of the fourth bevel gear.

[0017] Beneficial effects: By setting the front power output shaft and the front reduction shaft, the multi-stage reduction can reduce the rotation speed and increase the torque when transmitting power, which helps to improve the working efficiency of the mechanical equipment; because the transmission is carried out through bevel gears, the front reduction shaft is set vertically, which can increase the distance between the front wheel axle and the front power output shaft, which is suitable for the situation where the front gearbox height of the micro-tiller is relatively high.

[0018] As a preferred embodiment of the utility model, the rear gearbox includes a rear intermediate shaft and a rear reduction shaft, the rear intermediate shaft is fixedly connected with a first transmission gear, the rear reduction shaft is fixedly connected with a double gear, the double gear includes a second transmission gear and a third transmission gear, and the rear wheel shaft is fixedly connected with a fourth transmission gear;

[0019] The first transmission gear is meshed with the second transmission gear, the number of teeth of the first transmission gear is smaller than that of the second transmission gear, the third transmission gear is meshed with the fourth transmission gear, the number of teeth of the third transmission gear is smaller than that of the fourth transmission gear.

[0020] Beneficial effect: By setting the rear intermediate shaft and the rear reduction shaft, the multi-stage reduction can reduce the rotation speed and increase the torque when transmitting power, which helps to improve the working efficiency of the mechanical equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a structural schematic diagram of an embodiment of the riding micro-tillage machine of the utility model;

[0022] Figure 2 It is a transmission schematic diagram of the front gearbox part and the rear gearbox part in the embodiment of the riding micro-tillage machine of the utility model;

[0023] Figure 3 It is a structural schematic diagram of the front gearbox part in an embodiment of the riding micro-tillage machine of the utility model;

[0024] Figure 4 It is a schematic diagram of the connection between the front gearbox and the front wheel axle in an embodiment of the riding micro-tillage machine of the utility model;

[0025] Figure 5 It is a structural schematic diagram of the rear gearbox part of an embodiment of the ride-on micro-tillage machine of the utility model.

[0026] The reference numerals include: front gearbox 1, front power input shaft 11, input shaft constant mesh gear 111, front intermediate shaft 12, front intermediate shaft constant mesh gear 121, intermediate shaft first gear gear 122, front intermediate shaft second gear gear 123, front intermediate shaft third gear gear 124, reverse gear shaft 13, reverse gear 131, reverse idler gear 132, front power output shaft 14, front output shaft first gear gear 141, front output shaft second gear gear 142, front output shaft third gear gear 143, front reduction shaft 15, first bevel gear 151, second bevel gear 152 , the third bevel gear 153, the fourth bevel gear 154, the rear gearbox 2, the rear power input shaft 21, the rear input shaft first gear gear 211, the rear input shaft second gear gear 212, the rear intermediate shaft 22, the first transmission gear 221, the rear intermediate shaft first gear gear 222, the rear intermediate shaft second gear gear 223, the rear reduction shaft 23, the second transmission gear 231, the third transmission gear 232, the fourth transmission gear 233, the front wheel axle 3, the front running wheel 31, the rear wheel axle 4, the rear running wheel 41, the front universal joint 51, the connecting shaft 52, and the rear universal joint 53. DETAILED DESCRIPTION

[0027] Typical embodiments that embody the features and advantages of the present invention will be described in detail in the following description. It should be understood that the present invention can have various changes in different embodiments without departing from the scope of the present invention, and the descriptions and illustrations therein are essentially for illustrative purposes rather than for limiting the present invention.

[0028] In the description of the present application, the terms "first", "second", "one side", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the structure referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0029] See also Figure 1 and Figure 2 As shown, this embodiment discloses a riding micro-tillage machine, including a front gearbox 1, a rear gearbox 2 and a traveling mechanism, wherein the traveling mechanism includes a front wheel axle 3 and a rear wheel axle 4, wherein the front gearbox 1 drives the front wheel axle 3, and the front wheel axle 3 is detachably connected to a front traveling wheel 31 or a tilling mechanism, and the rear gearbox 2 drives the rear wheel axle 4, and the rear wheel axle 4 is detachably connected to a rear traveling wheel 41, and the outer diameter of the rear traveling wheel 41 is larger than the outer diameter of the front traveling wheel 31 or the tilling mechanism.

[0030] Among them, see Figure 2 The front walking wheel 31 and the tilling mechanism are both fixedly connected with a connecting pipe, and the connecting pipe is sleeved on the front wheel axle 3. Through holes are opened on the front wheel axle 3 and the connecting pipe, and a connecting piece is inserted into the through hole to fix the front wheel axle 3 and the connecting pipe.

[0031] In this embodiment, the cross-section of the front wheel axle 3 is hexagonal, and the connecting pipes are all hexagonal tubes, which are convenient for aligning the through holes when installing the connecting parts; the connecting parts are bolts; in other embodiments, the connecting pipes can be square tubes and the connecting parts can be pins.

[0032] Among them, the outer diameter size range of the front running wheel 31 is 300-560mm, the outer diameter size range of the rear running wheel 41 is 400-650mm, and the outer diameter size range of the tillage mechanism is 300-500mm; the speed ratio range of the front wheel axle 3 and the rear wheel axle 4 is 1.3~2.17:1.

[0033] In this embodiment, the outer diameter of the front running wheel and the tilling mechanism is selected to be 400 mm, and the outer diameter of the rear running wheel 41 is selected to be 520 mm.

[0034] Among them, see Figure 3The front gearbox 1 comprises a front power input shaft 11, a front intermediate shaft 12, a reverse gear shaft 13 and a front power output shaft 14 installed in the front housing, and the front power input shaft 11 is provided with an input shaft constant meshing gear 111;

[0035] The front intermediate shaft 12 is provided with a triple gear and a front intermediate shaft constant meshing gear 121 meshing with the input shaft constant meshing gear 111. The triple gear is slidably connected to the front intermediate shaft 12. The triple gear includes a front intermediate shaft first gear 122, a front intermediate shaft second gear 123 and a front intermediate shaft third gear 124.

[0036] The front power output shaft 14 is provided with a front output shaft first gear 141, a front output shaft second gear 142, and a front output shaft third gear 143;

[0037] The reverse gear shaft 13 is provided with a reverse gear 131 and a reverse idler gear 132, and the reverse idler gear 132 is meshed with a first gear 141 of the front output shaft;

[0038] When the triple gears slide, the front intermediate shaft first gear gear 122 can be switched to mesh with the front output shaft first gear gear 141 to switch the front gearbox 1 to the first gear; or the front intermediate shaft second gear gear 123 can be meshed with the front output shaft second gear gear 142 to switch the front gearbox 1 to the second gear; or the front intermediate shaft third gear gear 124 can be meshed with the front output shaft third gear gear 143 to switch the front gearbox 1 to the third gear; or the front intermediate shaft third gear gear 124 can be meshed with the reverse gear 131 to switch the front gearbox 1 to the reverse gear; or neither of them can be meshed to switch the front gearbox 1 to the neutral gear.

[0039] See also Figure 4 The front gearbox 1 also includes a front reduction shaft 15, a first bevel gear 151 is fixedly connected to the front power output shaft 14, a second bevel gear 152 meshing with the first bevel gear 151 is fixedly connected to the upper end of the front reduction shaft 15, a fourth bevel gear 154 is fixedly connected to the front wheel shaft 3, and a third bevel gear 153 meshing with the fourth bevel gear 154 is fixedly connected to the lower end of the front reduction shaft 15; the number of teeth of the first bevel gear 151 is less than the number of teeth of the second bevel gear 152, and the number of teeth of the third bevel gear 153 is less than the number of teeth of the fourth bevel gear 154.

[0040] Among them, see Figure 5 The rear gearbox 2 includes a rear power input shaft 21 and a rear intermediate shaft 22 installed in the rear housing, and the rear power input shaft 21 is slidably connected to a double gear, and the double gear includes a rear input shaft first gear 211 and a rear input shaft second gear 212;

[0041] The rear intermediate shaft 22 is provided with a first transmission gear 221, a rear intermediate shaft first gear 222 and a rear intermediate shaft second gear 223;

[0042] When the double gears slide, the first gear 211 of the rear input shaft can be meshed with the first gear 222 of the rear intermediate shaft, and the rear gearbox 2 can be switched to the first gear; or the second gear 212 of the rear input shaft can be meshed with the second gear 223 of the rear intermediate shaft, and the rear gearbox 2 can be switched to the second gear; or neither of them can be meshed, and the rear gearbox 2 can be switched to the neutral gear;

[0043] The rear gearbox 2 further includes a rear reduction shaft 23, a first transmission gear 221 is fixedly connected to the rear intermediate shaft 22, a double gear is fixedly connected to the rear reduction shaft 23, and the double gear includes a second transmission gear 231 and a third transmission gear 232, and a fourth transmission gear 233 is fixedly connected to the rear wheel shaft 4;

[0044] The first transmission gear 221 meshes with the second transmission gear 231 , and the number of teeth of the first transmission gear 221 is smaller than that of the second transmission gear 231 . The third transmission gear 232 meshes with the fourth transmission gear 233 , and the number of teeth of the third transmission gear 232 is smaller than that of the fourth transmission gear 233 .

[0045] Among them, see Figure 2 The front gearbox 1 and the rear gearbox 2 are connected via a second transmission shaft, and the second transmission shaft includes a front universal joint 51, a connecting shaft 52, and a rear universal joint 53 which are connected in sequence.

[0046] In this embodiment, the front-wheel drive travel mode is realized by cooperating the first gear, the second gear, and the third gear of the front gearbox 1 with the neutral gear of the rear gearbox 2; the four-wheel drive travel mode is realized by cooperating the first gear, the second gear, and the third gear of the front gearbox 1 with the first gear and the second gear of the gearbox. At this time, the front travel wheel 31 is replaced with a tillage mechanism (such as a rotary tiller) to realize the tillage mode. The gear position of the front gearbox 1 is switched according to the hardness of the soil, which is suitable for a variety of application scenarios.

[0047] The above-mentioned implementation modes are only preferred implementation modes of the present invention, and cannot be used to limit the protection scope of the present invention. Any non-substantial changes and substitutions made by technicians in this field on the basis of the present invention shall fall within the scope of protection required by the present invention.

Claims

1. A riding micro-tillage machine, characterized in that: It includes a traveling mechanism, which includes a front wheel axle and a rear wheel axle, the front wheel axle is detachably connected to a front traveling wheel or a tilling mechanism, the rear wheel axle is detachably connected to a rear traveling wheel, and the outer diameter of the rear traveling wheel is larger than the outer diameter of the front traveling wheel or the tilling mechanism; the speed ratio of the front wheel axle to the rear wheel axle is in the range of 1.3 to 2.17:

1.

2. The riding micro-tillage machine according to claim 1, characterized in that: The outer diameter of the front running wheel is in the range of 300-560 mm, the outer diameter of the rear running wheel is in the range of 400-650 mm, and the outer diameter of the tilling mechanism is in the range of 300-500 mm.

3. The riding micro-tillage machine according to claim 1, characterized in that: The front walking wheel and the tillage mechanism are both fixedly connected with a connecting pipe, the connecting pipe is sleeved on the front wheel axle, the front wheel axle and the connecting pipe are both provided with through holes, and connecting pieces are inserted into the through holes to fixedly connect the front wheel axle and the connecting pipe.

4. The riding micro-tillage machine according to claim 1, characterized in that: It also includes a front gearbox, a rear gearbox and a first transmission shaft. The front gearbox is transmission-connected to the rear gearbox via the first transmission shaft. The front gearbox drives the front wheel axle, and the rear gearbox drives the rear wheel axle.

5. The riding micro-tillage machine according to claim 4, characterized in that: The front gearbox includes a front power output shaft and a front reduction shaft, the front power output shaft is fixedly connected with a first bevel gear, the upper end of the front reduction shaft is fixedly connected with a second bevel gear meshing with the first bevel gear, the front wheel shaft is fixedly connected with a fourth bevel gear, and the lower end of the front reduction shaft is fixedly connected with a third bevel gear meshing with the fourth bevel gear; the number of teeth of the first bevel gear is smaller than the number of teeth of the second bevel gear, and the number of teeth of the third bevel gear is smaller than the number of teeth of the fourth bevel gear.

6. The riding micro-tillage machine according to claim 4, characterized in that: The rear gearbox comprises a rear intermediate shaft and a rear reduction shaft, the rear intermediate shaft is fixedly connected with a first transmission gear, the rear reduction shaft is fixedly connected with a double gear, the double gear comprises a second transmission gear and a third transmission gear, and the rear wheel shaft is fixedly connected with a fourth transmission gear; The first transmission gear is meshed with the second transmission gear, the number of teeth of the first transmission gear is smaller than that of the second transmission gear, the third transmission gear is meshed with the fourth transmission gear, the number of teeth of the third transmission gear is smaller than that of the fourth transmission gear.

Images