Crawler type tiller

Abstract

The present invention relates to the field of agricultural machinery, and specifically to a crawler type tiller, comprising a casing, a driving mechanism, a transmission mechanism, a tiller mechanism, a crawler walking mechanism, an armrest mechanism and a casing; the driving mechanism comprises: an engine, a transmission belt and a driving pulley; the transmission mechanism comprises: a rotating shaft group, a transmission gear group, a power input shaft, a tiller power output shaft and a crawler power output shaft arranged in the casing; the tiller mechanism comprises: a driving crank, a swing arm rocker, a tiller connecting rod and a tiller rake tooth, and the tiller rake tooth is connected to the swing arm hinge end of the tiller connecting rod; the crawler walking machine comprises: a crawler formed by a crawler plate chain, a guide sprocket, a driving sprocket and a sprocket positioning plate and an external connecting plate, the driving sprocket is connected to the crawler power output shaft, and the two ends of the external connecting plate are respectively connected to the sprocket positioning plate and the casing, and the tiller mechanism is arranged between the crawler and the casing.

Description

Technical Field

[0001] The invention relates to the field of agricultural machinery, and in particular to a crawler tiller. Background Art

[0002] Under the trend of aging, labor cost is the biggest cost of tea gardens. The rows of closed mature tea gardens are covered by tea trees, making it difficult for manual labor to cultivate. At the same time, the cost of manual labor is high and the efficiency is low. Mechanization of tea garden operation management is the fundamental way to high-quality development. Tea gardens are mostly located in hilly and mountainous areas, and it is difficult for machinery to enter. Organic fertilizers are useless, and inorganic fertilizers are available. As a result, at present, tea gardens on hillsides have basically abandoned inter-cultivation operations. Tea gardens basically spread a large amount of chemical fertilizers, and organic fertilizers are basically not applied, resulting in severe soil acidification and compaction, premature aging of tea trees, and a serious decline in tea quality and yield. Summary of the invention

[0003] The purpose of the present invention is to solve the problems in the background technology and provide a crawler tiller.

[0004] The above technical objectives of the present invention are achieved through the following technical solutions:

[0005] A crawler type tiller, comprising a housing, a driving mechanism, a transmission mechanism, a tiller mechanism, a crawler walking mechanism, an armrest mechanism and a housing; the driving mechanism comprises: an engine, a transmission belt and a driving pulley; the transmission mechanism comprises a rotating shaft group, a transmission gear group, a power input shaft, a tiller power output shaft and a crawler power output shaft arranged in the housing, the power input shaft is connected to the engine through the transmission belt and the driving pulley; the tiller mechanism comprises: a driving crank, a swing arm rocker, a tiller connecting rod and a tiller rake tooth, the The driving crank is connected to the digging and tilling power output shaft, and the digging connecting rod includes: a crank hinge end and a swing arm hinge end, and the digging and tilling rake teeth are connected to the swing arm hinge end; the crawler walking mechanism is an external crawler structure arranged on both sides of the box body, including: a crawler formed by a track plate chain and a guide sprocket, a driving sprocket and a sprocket positioning plate and an external connecting plate, the driving sprocket is connected to the crawler power output shaft, and the two ends of the external connecting plate are respectively connected to the sprocket positioning plate and the box body, and the digging and tilling mechanism is arranged between the crawler and the box body.

[0006] Preferably, the rotating shaft group includes: a first shaft, a second shaft, a third shaft, a fourth shaft, a fifth shaft, a sixth shaft, a seventh shaft, an eighth shaft and a ninth shaft arranged in parallel, the first shaft is coaxially arranged with the power input shaft, the fourth shaft is coaxially arranged with the tillage power output shaft, the ninth shaft includes two coaxially arranged half shafts, no torque is transmitted between the two half shafts, and two crawler power output shafts are provided, which are respectively connected to the two half shafts.

[0007] Preferably, the transmission gear group includes a power input gear group, a tillage mechanism control gear group and a walking mechanism transmission gear group that are meshed in sequence, the first shaft, the second shaft and the third shaft are arranged in the power input wheel group, the fourth shaft, the fifth shaft and the sixth shaft are arranged in the tillage mechanism control wheel group, and the seventh shaft, the eighth shaft and the ninth shaft are arranged in the walking mechanism transmission wheel group.

[0008] Preferably, the power input gear group includes: a first shaft gear arranged on the first shaft, a second shaft gear arranged on the second shaft and a third shaft gear arranged on the third shaft; the first shaft gear and the second shaft gear are single gears, and the third shaft gear includes a group of coaxially rigidly connected pinion gears and large gears; the first shaft gear, the second shaft gear and the large gear of the third shaft gear are meshed in sequence; the tillage mechanism control gear group includes: a fourth shaft gear arranged on the fourth shaft, a fifth shaft gear arranged on the fifth shaft and a sixth shaft gear arranged on the sixth shaft; the fourth shaft gear is movably connected to the fourth shaft, the fifth shaft gear includes a group of coaxially rigidly connected first gear and second gear, the sixth shaft gear includes a group of coaxially rigidly connected pinion gear and large gear, and the sixth shaft gear is movably connected to the sixth shaft; the two sides of the fourth shaft gear are respectively meshed with the pinion gear of the third shaft gear and the first gear of the fifth shaft gear, and the The second gear of the five-axis gear is meshed with the large gear of the sixth axis gear; the walking mechanism transmission gear group includes: a seventh axis gear arranged on the seventh axis, an eighth axis gear arranged on the eighth axis and a ninth axis gear arranged on the ninth axis; the seventh axis gear includes a group of coaxially rigidly connected pinions and large gears, the eighth axis gear includes a central transmission gear and a left clutch gear and a right clutch gear arranged on both sides thereof, the central transmission gear is rigidly connected to the eighth axis, the left clutch gear and the right clutch gear are slidingly connected to the eighth axis, and the ninth axis gear includes a left drive gear and a right drive gear; the large gear of the seventh axis gear is meshed with the pinion gear of the sixth axis gear, the pinion gear of the seventh axis gear is meshed with the central transmission gear of the eighth axis gear, the left clutch gear and the right clutch gear are respectively meshed with the left drive gear and the right drive gear, and the left drive gear and the right drive gear are respectively rigidly connected to the two half shafts.

[0009] Preferably, the two ends of the driving crank are respectively connected to the fourth shaft and the crank hinge end, and the two ends of the swing arm rocker are respectively connected to the swing arm hinge end and the sixth shaft.

[0010] Preferably, a tillage clutch mechanism is provided at the fourth shaft, and the tillage clutch mechanism includes a lever arranged at the front end of the box body and a spring and a clutch plate arranged outside the fourth shaft.

[0011] Preferably, a track wheel clutch mechanism is provided at the eighth shaft, and the track wheel clutch mechanism is provided with two groups, which are respectively connected with the left clutch gear and the right clutch gear; the track wheel clutch mechanism includes: a shift fork and a shift fork control rod.

[0012] Preferably, a group of the digging and tilling mechanisms are respectively arranged on both sides of the box body, and the driving cranks in the two groups of digging and tilling mechanisms are arranged at an angle of 180 degrees, so as to achieve the effect of staggered digging and tilling.

[0013] Preferably, the armrest mechanism comprises: a plurality of operating levers, and the plurality of operating levers are respectively connected to the tillage clutch mechanism and the track wheel clutch mechanism through pull wires.

[0014] Preferably, a conical surface is provided at the front end of the shell to facilitate the whole device to move around in the tea garden.

[0015] Intertillage refers to turning over and loosening the shallow soil. In production, intertillage is often combined with weeding. Intertillage can increase soil aeration and enhance the respiration of crop roots. The more respiration there is, the stronger the absorption capacity is, and thus the more luxuriant the growth is. Intertillage can increase the effective nutrient content of the soil. The organic matter and mineral nutrients in the soil must be decomposed by soil microorganisms before they can be absorbed and utilized by crops. Because most microorganisms in dry soil are aerobic, when the soil is compacted and aerated, and there is insufficient oxygen in the soil, the microbial activity is weak, and the soil nutrients cannot be fully decomposed and released. After intertillage and loosening the soil, the soil microorganisms are active due to sufficient oxygen, decomposing and releasing a large amount of potential nutrients in the soil, and improving the utilization rate of soil nutrients. Intertillage can regulate the moisture content of the soil. Intertillage during drought can cut off the capillaries on the surface of the soil, reduce the transport of soil moisture to the surface, reduce evaporation and loss, and improve the drought resistance of the soil. Intertillage can stir the fertilizer applied on the surface to the bottom layer, so as to achieve the purpose of blending soil and fertilizer. Intertillage can increase soil temperature. Intertillage can loosen the soil, increase the area receiving light, enhance the absorption of solar radiation, weaken the heat dissipation capacity, and quickly conduct heat to the deep soil layer to increase soil temperature. Intertillage is especially effective for heavy and compact soil. In autumn and winter, insect pupae have entered the soil. Through tillage, some of them are frozen to death, reducing insect pests in the next year. It can reduce pesticides by more than 30%. Intertillage can cut off the capillary roots growing upward of tea (fruit) trees, promote the growth of new roots downward, and improve the drought resistance of tea (fruit) trees.

[0016] Conventional tillage methods include plowing and rotary tillage. However, mechanized plowing equipment is difficult to go up the mountain, the size of the plowed soil blocks does not meet the requirements of the tea garden, the plowing depth is difficult to control, and high requirements are placed on the operator. Rotary tillage cannot be implemented on hard soil, and the tillage depth of 3-5CM does not meet the requirements of tea gardens, resulting in low tillage efficiency. The rotary tillage blades break the tea roots, affecting the growth of tea leaves; high-speed rotating blades often break and injure people when they hit stones. The rotary tillage blocks are too fine and are easy to harden after rain. The rotary blades are easily entangled by weeds, resulting in a high failure rate.

[0017] In summary, the beneficial effects of the present invention are:

[0018] 1. The crawler type tillage machine of the present invention adopts a tillage mechanism to perform inter-cultivation in the tea garden. The operation mode of artificial digging tooth tillage is imitated, the soil and roots are loosened without damaging the roots, that is, the depth of the operation is ensured, the size of the operation soil block is appropriate, the soil and fertilizer are compatible, the utilization rate of the fertilizer is improved, and the purpose of weeding in the tea garden is achieved, and the effect of reducing both pesticides and fertilizers is achieved.

[0019] 2. The crawler tillage machine described in the present invention adopts a crawler walking mechanism, which can realize the equipment to turn 360 degrees on the spot in the tea garden terrain, solving the problem of turning around in the narrow tea garden. It has good grip and mountain stability, solving the problem of "agricultural machinery going up the mountain" and the easy rollover of wheeled agricultural machinery on hillsides. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the structure of the present invention;

[0021] Figure 2 It is a schematic diagram of the structure inside the housing of the present invention;

[0022] Figure 3 It is a structural schematic diagram of the tillage mechanism of the present invention;

[0023] Figure 4 It is a structural schematic diagram of the rotating shaft assembly of the present invention;

[0024] Figure 5 It is a structural schematic diagram of the transmission gear set of the present invention;

[0025] Figure 6 It is a structural schematic diagram of the crawler of the present invention. DETAILED DESCRIPTION

[0026] The following specific embodiments are merely explanations of the present invention and are not limitations of the present invention. After reading this specification, those skilled in the art may make modifications to the embodiments without any creative contribution as needed. However, such modifications are protected by the patent law as long as they are within the scope of the claims of the present invention.

[0027] The present invention will be described in detail below with reference to the accompanying drawings by way of embodiments.

[0028] Embodiment 1:

[0029] according to Figure 1 to Figure 6 As shown, a crawler type tiller includes a housing 1, a driving mechanism 2, a transmission mechanism 3, a tilling mechanism 4, a crawler walking mechanism 5, an armrest mechanism 6 and a housing 7, wherein a conical surface 71 is provided at the front end of the housing 7. The driving mechanism 2 includes: an engine 21, a transmission belt 22 and a driving pulley 23; the transmission mechanism 3 includes: a rotating shaft group 30, a transmission gear group 31, a power input shaft 32, a tilling power output shaft 33 and a crawler power output shaft 34 arranged in the housing 1, wherein the power input shaft 32 is connected to the engine 21 via the transmission belt 22 and the driving pulley 23; the tilling mechanism 4 includes: a driving crank 41, a swing arm rocker 42, a tilling connecting rod 43 and a tilling rake tooth 44, wherein the driving crank 41 is connected to the tilling power output shaft 33, and the tilling connecting rod 44 is connected to the tilling power output shaft 33. 3 comprises: a crank hinge end 431 and a swing arm hinge end 432, and the digging and tilling rake teeth 44 are connected to the swing arm hinge end 432; the crawler walking mechanism 5 is an external crawler structure arranged on both sides of the box body 1, comprising: a crawler 52 connected by a crawler plate chain 51, a guide sprocket 53, a driving sprocket 54, a sprocket positioning plate 55 and an external connecting plate 56, the driving sprocket 54 is connected to the crawler power output shaft 34, and the two ends of the external connecting plate 56 are respectively connected to the sprocket positioning plate 55 and the box body 1, and the digging and tilling mechanism 4 is arranged between the crawler 52 and the box body 1.

[0030] according to Figure 4 As shown, the rotating shaft group 30 includes: a first shaft 301, a second shaft 302, a third shaft 303, a fourth shaft 304, a fifth shaft 305, a sixth shaft 306, a seventh shaft 307, an eighth shaft 308 and a ninth shaft 309 which are arranged in parallel. The first shaft 301 is coaxially arranged with the power input shaft 32, the fourth shaft 304 is coaxially arranged with the tillage power output shaft 33, the ninth shaft 309 includes two coaxially arranged half shafts 3091, and no torque is transmitted between the two half shafts. Two crawler power output shafts 34 are arranged, which are respectively connected to the two half shafts 3091.

[0031] according to Figure 5As shown, the transmission gear group 31 includes a power input gear group 310, a tillage mechanism control gear group 320 and a walking mechanism transmission gear group 330 that are meshed in sequence, the first shaft 301, the second shaft 302 and the third shaft 303 are arranged in the power input wheel group 310, the fourth shaft 304, the fifth shaft 305 and the sixth shaft 306 are arranged in the tillage mechanism control wheel group 320, and the seventh shaft 307, the eighth shaft 308 and the ninth shaft 309 are arranged in the walking mechanism transmission wheel group 330. The power input gear set 310 includes: a first shaft gear 311 arranged on the first shaft 301, a second shaft gear 312 arranged on the second shaft 302, and a third shaft gear 313 arranged on the third shaft 303; the first shaft gear 311 and the second shaft gear 312 are single gears, and the third shaft gear 313 includes a group of coaxial rigidly connected small gears and large gears; the first shaft gear 311, the second shaft gear 312 and the large gear of the third shaft gear 313 are meshed in sequence; the tillage mechanism control gear set 320 includes: a fourth shaft gear 321 arranged on the fourth shaft 304, a The fifth shaft gear 322 is arranged on the fifth shaft 305 and the sixth shaft gear 323 is arranged on the sixth shaft 306; the fourth shaft gear 321 is movably sleeved with the fourth shaft 304, the fifth shaft gear 322 includes a group of first gears and second gears that are rigidly connected to each other on the same axis, the sixth shaft gear 323 includes a group of pinion gears and large gears that are rigidly connected to each other on the same axis, and the sixth shaft gear 323 is movably sleeved with the sixth shaft 306; the two sides of the fourth shaft gear 321 are respectively meshed with the pinion gear of the third shaft gear 313 and the first gear of the fifth shaft gear 322, and the second gear of the fifth shaft gear 322 is meshed with the sixth shaft gear 313. The large gear of the gear 323 is meshed with the large gear of the gear 323; the walking mechanism transmission gear set 330 includes: a seventh shaft gear 331 arranged on the seventh shaft 307, an eighth shaft gear 332 arranged on the eighth shaft 308 and a ninth shaft gear 333 arranged on the ninth shaft 309; the seventh shaft gear 331 includes a group of coaxial rigidly connected pinions and large gears, the eighth shaft gear 332 includes a central transmission gear 3321 and a left clutch gear 3322 and a right clutch gear 3323 arranged on both sides thereof, the central transmission gear 3321 is rigidly connected to the eighth shaft 308, the left clutch gear 3322 and The right clutch gear 3323 is slidingly connected to the eighth shaft 308, and the ninth shaft gear 333 includes a left drive gear 3331 and a right drive gear 3332; the large gear of the seventh shaft gear 331 is meshed with the small gear of the sixth shaft gear 323, and the small gear of the seventh shaft gear 331 is meshed with the central transmission gear 3321 of the eighth shaft gear 332, the left clutch gear 3322 and the right clutch gear 3323 are respectively meshed with the left drive gear 3331 and the right drive gear 3332, and the left drive gear 3331 and the right drive gear 3332 are respectively rigidly connected to the two half shafts 3091.

[0032] according to Figure 3As shown, the two ends of the driving crank 41 are connected to the fourth shaft 304 and the crank hinge end 431 respectively, and the two ends of the swing arm rocker 42 are connected to the swing arm hinge end 432 and the sixth shaft 306 respectively.

[0033] The fourth shaft 304 is provided with a tillage clutch mechanism 8, which includes a lever 81 provided at the front end of the housing 1 and a spring and a clutch plate provided outside the fourth shaft 304. The eighth shaft 308 is provided with a track wheel clutch mechanism 9, which includes two groups, respectively connected to the left clutch gear 3322 and the right clutch gear 3323; the track wheel clutch mechanism 9 includes a fork and a fork control rod, and only one group of track wheel clutch mechanisms is shown in the figure. The handrail mechanism 6 includes a plurality of operating rods 61, which are respectively connected to the tillage clutch mechanism 8 and the track wheel clutch mechanism 9 through pull wires.

[0034] When the equipment is in operation: the power input shaft 32 is driven by the driving mechanism 2 to transfer power into the transmission mechanism 3. 1. When the digging and tilling clutch mechanism 8 controls the clutch disc to fit with the fourth shaft gear 321, the fourth shaft gear 321 drives the fourth shaft 304 and the digging and tilling power output shaft 33 to drive the entire digging and tilling mechanism 4 to work. When the digging and tilling clutch mechanism 8 controls the clutch disc to separate from the fourth shaft gear 321, the fourth shaft gear 321 idles at the fourth shaft 304, and the digging and tilling mechanism 4 does not operate. 2. The crawler wheel clutch mechanism 9 controls the fit of the left clutch gear 3322 and the right clutch gear 3323 with the center transmission gear 3321 through the fork and the fork control rod. When the left clutch gear 3322 fits with the center transmission gear 3321, the left clutch gear 3322 drives the left drive gear 3331 to drive the left half shaft to drive the left crawler to run. When the right clutch gear 33233 is in contact with the central transmission gear 3321, the right driving gear 3332 is driven to drive the right half shaft to drive the right crawler track to run.

[0035] Embodiment 2:

[0036] The difference from the above-mentioned embodiment 1 is that a group of digging and tilling mechanisms 4 are respectively arranged on both sides of the box body 1, and the driving cranks 1 in the two groups of digging and tilling mechanisms 4 are arranged at an angle of 180 degrees.

Claims

1. A crawler tiller, characterized in that: It comprises a housing (1), a driving mechanism (2), a transmission mechanism (3), a tillage mechanism (4), a crawler walking mechanism (5), an armrest mechanism (6) and a housing (7); The driving mechanism (2) comprises: an engine (21), a transmission belt (22) and a driving pulley (23); The transmission mechanism (3) comprises a rotating shaft group (30), a transmission gear group (31), a power input shaft (32), a tillage power output shaft (33) and a crawler power output shaft (34) arranged in the housing (1); the power input shaft (32) is connected to the engine (21) via the transmission belt (22) and the drive pulley (23); The rotating shaft group (30) comprises: a first shaft (301), a second shaft (302), a third shaft (303), a fourth shaft (304), a fifth shaft (305), a sixth shaft (306), a seventh shaft (307), an eighth shaft (308) and a ninth shaft (309) which are arranged in parallel, wherein the first shaft (301) is coaxially arranged with the power input shaft (32), the fourth shaft (304) is coaxially arranged with the tillage power output shaft (33), the ninth shaft (309) comprises two coaxially arranged half shafts (3091), and the crawler power output shaft (34) is provided with two shafts which are respectively connected to the two half shafts (3091); The transmission gear set (31) comprises a power input gear set (310), a tillage mechanism control gear set (320) and a travel mechanism transmission gear set (330) which are meshed in sequence; the first shaft (301), the second shaft (302) and the third shaft (303) are arranged in the power input gear set (310); the fourth shaft (304), the fifth shaft (305) and the sixth shaft (306) are arranged in the tillage mechanism control gear set (320); and the seventh shaft (307), the eighth shaft (308) and the ninth shaft (309) are arranged in the travel mechanism transmission gear set (330); The power input gear set (310) comprises: a first shaft gear (311) arranged on the first shaft (301), a second shaft gear (312) arranged on the second shaft (302), and a third shaft gear (313) arranged on the third shaft (303); the first shaft gear (311) and the second shaft gear (312) are single gears, and the third shaft gear (313) comprises a group of coaxially rigidly connected pinion gears and large gears; the first shaft gear (311), the second shaft gear (312), and the large gears of the third shaft gear (313) are meshed in sequence; The tillage mechanism control gear set (320) comprises: a fourth shaft gear (321) arranged on the fourth shaft (304), a fifth shaft gear (322) arranged on the fifth shaft (305), and a sixth shaft gear (323) arranged on the sixth shaft (306); the fourth shaft gear (321) is movably sleeved with the fourth shaft (304); the fifth shaft gear (322) comprises a group of first gear and second gear coaxially rigidly connected; the sixth shaft gear (323) comprises a group of pinion gear and large gear coaxially rigidly connected; the sixth shaft gear (323) is movably sleeved with the sixth shaft (306); both sides of the fourth shaft gear (321) are respectively meshed with the pinion gear of the third shaft gear (313) and the first gear of the fifth shaft gear (322); the second gear of the fifth shaft gear (322) is meshed with the large gear of the sixth shaft gear (323); The walking mechanism transmission gear set (330) comprises: a seventh shaft gear (331) arranged on the seventh shaft (307), an eighth shaft gear (332) arranged on the eighth shaft (308), and a ninth shaft gear (333) arranged on the ninth shaft (309); the seventh shaft gear (331) comprises a group of coaxially rigidly connected pinion gears and large gears, the eighth shaft gear (332) comprises a central transmission gear (3321) and a left clutch gear (3322) and a right clutch gear (3323) arranged on both sides thereof, the central transmission gear (3321) is rigidly connected to the eighth shaft (308), the left clutch gear (3322) and the right clutch gear (3323) are The ninth shaft gear (333) is slidably connected to the eighth shaft (308); the ninth shaft gear (333) comprises a left drive gear (3331) and a right drive gear (3332); the large gear of the seventh shaft gear (331) is meshed with the small gear of the sixth shaft gear (323); the small gear of the seventh shaft gear (331) is meshed with the central transmission gear (3321) of the eighth shaft gear (332); the left clutch gear (3322) and the right clutch gear (3323) are respectively meshed with the left drive gear (3331) and the right drive gear (3332); the left drive gear (3331) and the right drive gear (3332) are respectively rigidly connected to the two half shafts (3091); A tillage clutch mechanism (8) is provided at the fourth shaft (304), and the tillage clutch mechanism (8) comprises a lever (81) provided at the front end of the housing (1), and a spring and a clutch plate provided outside the fourth shaft (304); The eighth shaft (308) is provided with a track wheel clutch mechanism (9), and the track wheel clutch mechanism (9) is provided with two groups, which are respectively connected to the left clutch gear (3322) and the right clutch gear (3323); the track wheel clutch mechanism (9) comprises: a shift fork and a shift fork control rod; The tillage mechanism (4) comprises: a driving crank (41), a swing arm rocker (42), a digging connecting rod (43) and a digging rake tooth (44); the driving crank (41) is connected to the digging power output shaft (33); the digging connecting rod (43) comprises: a crank hinge end (431) and a swing arm hinge end (432); and the digging rake tooth (44) is connected to the swing arm hinge end (432); The crawler walking mechanism (5) is an external crawler structure arranged on both sides of the box (1), comprising: a crawler (52) formed by a crawler plate chain (51), a guide sprocket (53), a driving sprocket (54), a sprocket positioning plate (55) and an external connecting plate (56), wherein the driving sprocket (54) is connected to the crawler power output shaft (34), and the two ends of the external connecting plate (56) are respectively connected to the sprocket positioning plate (55) and the box (1), and the tillage mechanism (4) is arranged between the crawler (52) and the box (1).

2. A crawler tiller according to claim 1, characterized in that: The two ends of the driving crank (41) are respectively connected to the fourth shaft (304) and the crank hinge end (431), and the two ends of the swing arm rocker (42) are respectively connected to the swing arm hinge end (432) and the sixth shaft (306).

3. The crawler tiller according to claim 1, characterized in that: A set of the digging and tilling mechanisms (4) is respectively arranged on both sides of the box body (1), and the driving cranks (41) in the two sets of digging and tilling mechanisms (4) are arranged at an angle of 180 degrees.

4. The crawler tiller according to claim 1, characterized in that: The handrail mechanism (6) comprises a plurality of operating rods (61), wherein the plurality of operating rods (61) are respectively connected to the tillage clutch mechanism (8) and the track wheel clutch mechanism (9) via pull wires.

5. The crawler tiller according to claim 1, characterized in that: The front end of the housing (7) is provided with a conical surface (71).

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