Rotary cultivator with variable speed transmission mechanism

Abstract

The utility model discloses a rotary cultivator with a variable speed transmission mechanism, which comprises an engine, the output end of the engine is provided with a gearbox, the gearbox comprises the variable speed transmission mechanism, and the variable speed transmission mechanism comprises a gear shifting transmission mechanism, a reversing rotation resistance transmission mechanism, a rotary tillage transmission mechanism and a walking transmission mechanism. The rotary tillage transmission mechanism is connected with a rotary tillage working mechanism, and the walking transmission mechanism is connected with a walking driving mechanism. The gear shifting transmission mechanism is in transmission connection with the reversing rotation-resisting transmission mechanism, the reversing rotation-resisting transmission mechanism is in transmission connection with the walking transmission mechanism, and the reversing rotation-resisting transmission mechanism is disconnected with the rotary tillage transmission mechanism and used for reversing the gear of the walking driving mechanism and stopping the rotary tillage working mechanism from rotating. The rotary tillage work of the rotary tillage working mechanism is directly cut off while the rotary cultivator is in the reverse gear, operation is simple, walking difficulty of a user in the reverse gear process can be reduced, the phenomenon that the rotary tillage working part is tipped over is avoided, and the personal safety of the user is guaranteed.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the field of agricultural machinery, concretely relates to a rotary cultivator with variable speed transmission mechanism. BACKGROUND

[0002] At present, the rotary cultivator cannot directly cut off the rotary cultivator when the rotary cultivator and the walking working part are in reverse gear, and the walking working part is prone to danger when in reverse gear, and it is not conducive to observe the obstacles behind when the user walks backward, at this time, the rotary cultivator is still in operation, which will exert a backward thrust on the user, increasing the difficulty of walking backward for the user.

[0003] When in reverse gear, if the rotary cultivator hits hard objects, the rotary cultivator will tip over, and the rotating rotary cultivator is too close to the user, which is very easy to injure the user.

[0004] Therefore, the company has developed a rotary cultivator that stops working when in reverse gear and can safely reverse. CONTENT OF THE UTILITY MODEL

[0005] In view of the above problems, the utility model discloses a rotary cultivator with variable speed transmission mechanism, which comprises an engine, the output end of the engine is provided with a gearbox, the gearbox comprises a variable speed transmission mechanism, the variable speed transmission mechanism comprises a gear shifting transmission mechanism, a reversing resistance transmission mechanism, a rotary cultivator transmission mechanism and a walking transmission mechanism, the rotary cultivator transmission mechanism is connected with a rotary cultivator working mechanism, and the walking transmission mechanism is connected with a walking driving mechanism.

[0006] The gear shifting transmission mechanism and the reversing resistance transmission mechanism are in transmission connection, the reversing resistance transmission mechanism and the walking transmission mechanism are in transmission connection, the reversing resistance transmission mechanism is disconnected with the rotary cultivator transmission mechanism, and is used for reversing the walking driving mechanism.

[0007] Compared with the prior art, the utility model has the beneficial effects that: the gear shifting transmission mechanism and the reversing resistance transmission mechanism are in transmission connection, the reversing resistance transmission mechanism and the walking transmission mechanism are in transmission connection, so as to drive the walking driving mechanism to reverse, at this time, the reversing resistance transmission mechanism is disconnected with the rotary cultivator transmission mechanism, the rotary cultivator working mechanism stops rotating, the rotary cultivator directly disconnects the rotary cultivator working mechanism when reversing, the operation is simple, the difficulty of walking when reversing can be reduced, the backward thrust caused by the rotary cultivator working part when reversing is avoided, the difficulty of walking backward is reduced, the phenomenon of tilting of the rotary cultivator working part is avoided, and the personal safety of the user is ensured.

[0008] Further, the gearbox further comprises a clutch and a speed reduction transmission mechanism, and the speed reduction transmission mechanism is in transmission connection with the gear shifting transmission mechanism.

[0009] The output end of the clutch is provided with a fixed gear A1;

[0010] The reduction transmission mechanism comprises a reduction shaft, and the reduction shaft is sequentially provided with a fixed gear B1 and a fixed gear B2 from left to right.

[0011] The beneficial effects of the above further technical solutions are that the reduction transmission mechanism and the gear shifting transmission mechanism are drivingly connected, so that the walking speed of the walking mechanism and the rotary tillage speed of the rotary tillage working mechanism are controlled, the output shaft rotation speed of the engine is prevented from being too fast, the power output of the engine is reduced to a proper speed and torque, and the safety of the rotary tiller is ensured while the rotary tiller is efficiently operated;

[0012] The reduction transmission mechanism and the clutch are connected, so that the power of the gearbox is directly input and cut off, unexpected situations are avoided, the engine is protected, and the driving force of the rotary tiller is stably output.

[0013] Further, the gear shifting transmission mechanism comprises a gear shifting shaft, and the gear shifting shaft is sequentially provided with a shift fork gear C1, a shift fork gear C2, a fixed gear C3, a shift fork gear C4, a shift fork gear C5 and an idle gear C6 from left to right.

[0014] The reversing resistance transmission mechanism comprises a reversing resistance shaft, and the reversing resistance shaft is sequentially provided with an idle gear D1, a fixed gear D2 and a fixed gear D3 from left to right.

[0015] The rotary tillage transmission mechanism comprises a rotary tillage shaft, and the rotary tillage shaft is sequentially provided with a bevel gear E1, a fixed gear E2, a fixed gear E3 and a fixed gear E4 from left to right.

[0016] The walking transmission mechanism comprises a walking shaft, and the walking shaft is sequentially provided with a fixed gear F1, a fixed gear F2, a fixed gear F3 and a bevel gear F4 from left to right.

[0017] The beneficial effects of the above further technical solutions are that the fixed gear A1 of the clutch is engaged with the fixed gear B2 of the reduction transmission mechanism, the reduction shaft is driven to rotate, the fixed gear B1 is engaged with the fixed gear C3 to drive the gear shifting shaft to rotate, and the gear shifting shaft drives the shift fork gears C1, C2, C4 and C5 to rotate.

[0018] Moving the shift lever one, the shift fork gear C1, the shift fork gear C2 and the fixed gear E2, the fixed gear E3 of the rotary tiller shaft cooperate, thereby controlling the rotary tiller working mechanism to rotate;

[0019] Moving the shift lever one, the shift fork gear C2 and the fixed gear D2 of the reversing freewheel transmission mechanism cooperate, thereby controlling the traveling mechanism to travel while avoiding the rotary tiller working mechanism to rotate, and the shift fork gear C1 and the idler gear D1 of the reversing freewheel transmission mechanism cooperate, thereby controlling the rotary tiller working mechanism to reverse.

[0020] Moving the shift lever two, the shift fork gear C4, the shift fork gear C5 and the fixed gear F1, the fixed gear F2, the fixed gear F3 of the traveling shaft cooperate, thereby controlling the traveling mechanism to travel;

[0021] By moving the shift lever one and the shift lever two, the traveling and the rotary tiller working of the rotary tiller are simply and efficiently matched, and the risk of the reverse gear is avoided.

[0022] Further, when the traveling driving mechanism is in the first gear, the shift fork gear C4 is engaged with the fixed gear F1;

[0023] When the traveling driving mechanism is in the neutral gear, the shift fork gear C4, the shift fork gear C5 are between the fixed gear F1 and the fixed gear F2; when the traveling mechanism is in the second gear, the shift fork gear C5 is engaged with the fixed gear F2;

[0024] When the traveling driving mechanism is in the third gear, the shift fork gear C5 is engaged with the idler gear C6 pawl, and the idler gear C6 is engaged with the fixed gear F3;

[0025] When the traveling driving mechanism is in the reverse gear, the shift fork gear C2 is engaged with the fixed gear D2, and the fixed gear D3 is engaged with the fixed gear F3;

[0026] When the rotary tiller working mechanism is in the reverse rotation, the shift fork gear C2 is engaged with the idler gear D1, and the idler gear D1 is engaged with the fixed gear E3;

[0027] When the rotary tiller working mechanism is in the neutral gear, the shift fork gear C1, the shift fork gear C2 are between the fixed gear E2 and the fixed gear E3;

[0028] When the rotary tiller working mechanism is in the forward rotation slow gear, the shift fork gear C2 is engaged with the fixed gear E3;

[0029] When the rotary tiller working mechanism is in the forward rotation fast gear, the shift fork gear C1 is engaged with the fixed gear E2.

[0030] The beneficial effects of the above further technical solutions are:

[0031] When the walking driving mechanism is in the first gear, the second gear or the neutral gear, the idle gear C6 idles, and the shift fork gear C4 and the shift fork gear C5 control the rotation of the walking shaft, thereby controlling the walking of the walking driving mechanism; when the walking driving mechanism is in the third gear, the shift fork gear C5 engages with the idle gear C6, and the idle gear C6 engages with the fixed gear F3, at this time, the idle gear C6 engages with the fixed gear F3, and drives the rotation of the walking shaft, thereby driving the walking of the walking driving mechanism;

[0032] When the rotary tillage working mechanism is in the neutral gear, the forward fast gear or the forward slow gear, the shift fork gear C1 and the shift fork gear C2 control the rotation of the rotary tillage shaft, thereby controlling the rotary tillage of the rotary tillage working mechanism;

[0033] By engaging the shift fork gear C2 with the fixed gear D2 and the fixed gear D3 with the fixed gear F3, at this time, the reversing resistance shaft rotates, the walking shaft rotates in the reverse gear, but the idle gear D1 idles, does not drive the rotation of the rotary tillage shaft, and the rotary tillage working mechanism stops rotating, thereby avoiding the danger during the reverse gear;

[0034] When the shift fork gear C2 engages with the idle gear D1 and the idle gear D1 engages with the fixed gear E3, the rotary tillage working mechanism is reversed, at this time, the idle gear D1 idles, does not drive the rotation of the reversing resistance shaft, and does not affect the walking of the walking driving mechanism.

[0035] Further, the reduction shaft, the gear shifting shaft, the reversing resistance shaft, the rotary tillage shaft and the walking shaft are arranged in parallel.

[0036] Preferably, the rotary tillage shaft and the walking shaft are located on the same horizontal line.

[0037] The beneficial effects of the above further technical solutions are: by arranging the reduction shaft, the gear shifting shaft, the reversing resistance shaft, the rotary tillage shaft and the walking shaft in parallel, the power is transmitted in sequence, by arranging the rotary tillage shaft and the walking shaft on the same horizontal line, the rotary tillage working and walking can be carried out separately without affecting each other, at the same time, the shift fork rod one and the shift fork rod two can be moved in the same direction, thereby facilitating the movement of the shift fork rod one and the shift fork rod two, and facilitating the gear shifting.

[0038] Further, a handrail seat is arranged on the gearbox, and a gear hanging mechanism is arranged on the handrail seat, the gear hanging mechanism comprises a limiting plate, a gear hanging groove one and a gear hanging groove two are arranged on the limiting plate, a gear hanging rod one is arranged in the gear hanging groove one, and a gear hanging rod two is arranged in the gear hanging groove two.

[0039] A positioning column one and a positioning column two are arranged on the handrail seat, an adjusting piece one is movably arranged on the positioning column one, and an adjusting piece two is movably arranged on the positioning column two, one end of the adjusting piece one is rotatably connected with the shift fork rod one, the other end of the adjusting piece one is connected with the gear hanging rod one, one end of the adjusting piece two is rotatably connected with the shift fork rod two, and the other end of the adjusting piece two is connected with the gear hanging rod two.

[0040] The beneficial effects of the further technical solutions are that: through the activity of the gear lever one in the gear slot one, the adjustment part one is rotated on the positioning column one by a certain angle, thereby driving the movement of the shift lever one, thereby controlling the reverse gear of the walking rotary tiller, the reverse rotation, neutral gear, forward fast gear and forward slow gear of the rotary tiller working mechanism; through the activity of the gear lever two in the gear slot two, the adjustment part two is rotated on the positioning column two by a certain angle, thereby driving the movement of the shift lever two, thereby controlling the walking gear one, walking gear two, walking gear three and walking neutral gear of the walking driving mechanism.

[0041] Further, the rotary tiller working mechanism comprises a rotary tiller power transmission shaft, a rotary tiller working shaft, a bevel gear one is arranged at the input end of the rotary tiller power transmission shaft, a bevel gear two is arranged at the output end of the rotary tiller power transmission shaft, a rotary tiller ring gear is arranged on the rotary tiller working shaft, the rotary tiller ring gear and the bevel gear two are engaged, the rotary tiller power transmission shaft is arranged obliquely, and the rotary tiller working shaft is located on the lower side of the engine.

[0042] The beneficial effects of the further technical solutions are that: through the engagement of the bevel gear one and the bevel gear E1, the rotary tiller power transmission shaft is rotated, thereby driving the engagement of the bevel gear two and the rotary tiller ring gear, and further driving the rotation of the rotary tiller working shaft and the rotary tiller cutter.

[0043] Further, the walking driving mechanism comprises a walking driving shaft one, a walking driving shaft two and a walking driving shaft three, a walking ring gear and a walking fixed gear one are arranged on the walking driving shaft one, a walking steering gear two and a walking steering gear three are arranged on the walking driving shaft two in a sliding manner, a walking fixed gear four and a walking fixed gear five are arranged on the walking driving shaft three, the walking steering gear two and the walking fixed gear four are engaged, and the walking steering gear three and the walking fixed gear five are engaged.

[0044] The beneficial effects of the further technical solutions are that: through the engagement of the walking ring gear and the bevel gear F4, the walking driving shaft one is rotated, the walking fixed gear one and the walking steering gear two are engaged, the walking driving shaft two is rotated, the walking steering gear two and the walking fixed gear four are engaged, the walking steering gear three and the walking fixed gear five are engaged, and the walking driving shaft three is rotated, thereby enabling the walking mechanism to walk.

[0045] Further, a steering adjustment part is arranged on the walking driving shaft two.

[0046] The steering adjustment part comprises a left steering rod, a right steering rod, a spring one and a spring two.

[0047] The left steering rod is connected with the walking steering gear two, the spring one is sleeved on the walking driving shaft two, and the spring one is connected with the walking steering gear two.

[0048] The right steering rod and the walking steering gear three are connected, and the spring two is arranged on the walking driving shaft two and connected with the walking steering gear three.

[0049] The beneficial effects of the further technical scheme are as follows: the left steering rod drives the walking steering gear two to slide, so as to control the engagement and disengagement of the walking steering gear two and the walking fixed gear four, the left steering rod controls the disengagement of the walking steering gear two and the walking fixed gear four, so as to slow down the speed of the left wheel, thereby making the rotary tiller turn left, the walking steering gear three and the walking fixed gear five are controlled by the steering rod, so as to slow down the speed of the right wheel, thereby making the rotary tiller turn right.

[0050] Further, the walking guide mechanism is arranged on the side of the engine away from the gearbox, and the walking guide mechanism comprises a limiting frame and a guide wheel.

[0051] The beneficial effects of the further technical scheme are as follows: the walking guide mechanism is arranged on the side of the engine away from the gearbox, and the walking guide mechanism comprises a limiting frame and a guide wheel. BRIEF DESCRIPTION OF DRAWINGS

[0052] Figure 1 It is a structural schematic diagram of a rotary tiller with a variable speed transmission mechanism;

[0053] Figure 2 It is a structural schematic diagram of a sealed transmission mechanism;

[0054] Figure 3 It is a structural schematic diagram of a variable speed gearbox Figure 1 ;

[0055] Figure 4 It is a structural schematic diagram of a variable speed gearbox Figure 2 ;

[0056] Figure 5 It is a structural schematic diagram of a walking driving shaft three;

[0057] Marked in the figure: 100, engine; 200, gearbox; 210, clutch; 211, fixed gear A1; 220, reduction transmission mechanism; 221, reduction shaft; 222, fixed gear B1; 223, fixed gear B2; 230, shift transmission mechanism; 231, shift shaft; 232, yoke gear C1; 233, yoke gear C2; 234, fixed gear C3; 235, yoke gear C4; 236, yoke gear C5; 237, idle gear C6; 238, yoke rod one; 239, yoke rod two; 240, reversing blocking transmission mechanism; 241, reversing blocking shaft; 242, idle gear D1; 243, fixed gear D2; 244, fixed gear D3; 250, rotary tillage transmission mechanism; 251, rotary tillage shaft; 252, bevel gear E1; 253, fixed gear E2; 254, fixed gear E3; 255, fixed gear E4; 260, walking transmission mechanism; 261, walking shaft; 262, fixed gear F1; 263, fixed gear F2; 264, fixed gear F3; 265, bevel gear F4; 300, rotary tillage working mechanism; 310, rotary tillage power transmission shaft; 311, bevel gear one; 312, bevel gear two; 320, rotary tillage working shaft; 321, rotary tillage ring gear; 400, walking driving mechanism; 410, walking driving shaft one; 411, walking ring gear; 412, walking fixed gear one; 420, walking driving shaft two; 421, walking steering gear two; 422, walking steering gear three; 423, left steering rod; 424, right steering rod; 425, spring one; 426, spring two; 430, walking driving shaft three; 431, walking fixed gear four; 432, walking fixed gear five; 500, handrail seat; 600, gear hanging mechanism; 610, limiting plate; 620, gear hanging rod one; 630, gear hanging rod two; 640, positioning column one; 650, positioning column two; 660, adjusting part one; 670, adjusting part two; 700, walking guiding mechanism; 701, limiting frame; 702, guiding wheel. DETAILED DESCRIPTION

[0058] In order to make the purpose, technical scheme and advantages of the utility model more clear, the technical scheme in the utility model embodiment will be clearly and completely described below in combination with the utility model embodiment.

[0059] The embodiment provides the embodiment 1

[0060] Please refer to Figures 1-5The utility model provides a rotary cultivator with variable speed transmission mechanism, including engine 100, the output of engine 100 is provided with gearbox 200, gearbox 200 includes variable speed transmission mechanism, variable speed transmission mechanism includes shift transmission mechanism 230, reverse blocking transmission mechanism 240, rotary cultivator transmission mechanism 250, walking transmission mechanism 260, rotary cultivator transmission mechanism 250 is connected with rotary cultivator working mechanism 300, and walking transmission mechanism 260 is connected with walking drive mechanism 400, shift transmission mechanism 230 is connected with reverse blocking transmission mechanism 240, and reverse blocking transmission mechanism 240 is connected with walking transmission mechanism 260, and reverse blocking transmission mechanism 240 is disconnected with rotary cultivator transmission mechanism 250 for walking drive mechanism 400 reverse gear, by setting up shift transmission mechanism 230 with reverse blocking transmission mechanism 240 transmission connection, reverse blocking transmission mechanism 240 with walking transmission mechanism 260 transmission connection, to drive walking drive mechanism 400 to reverse gear, at this time, reverse blocking transmission mechanism 240 is disconnected with rotary cultivator transmission mechanism 250, and rotary cultivator working mechanism 300 stops rotating, makes rotary cultivator reverse gear directly disconnects the rotary cultivator work of rotary cultivator working mechanism 300, and operation is simple, can reduce the difficulty of user walking when reversing, avoids the rotary cultivator rotary cultivator work part rotation when reversing and leads to the thrust to the rear, reduces the difficulty degree of user walking when reversing, avoids the phenomenon that rotary cultivator work part inclines, guarantees the personal safety of user.

[0061] As an embodiment, the gearbox 200 further comprises a clutch 210 and a speed reduction transmission mechanism 220, the speed reduction transmission mechanism 220 is in transmission connection with the shift transmission mechanism 230; the output end of the clutch 210 is provided with a fixed gear A1 211; the speed reduction transmission mechanism 220 comprises a speed reduction shaft 221, and the speed reduction shaft 221 is sequentially provided with a fixed gear B1 223 and a fixed gear B2 223 from left to right, the fixed gear A1 211 is in meshing with the fixed gear B2 223; by setting the speed reduction transmission mechanism 220 in transmission connection with the shift transmission mechanism 230, the walking speed of the walking drive mechanism 400 and the rotary cultivator speed of the rotary cultivator working mechanism 300 can be controlled, the output shaft speed of the engine 100 is prevented from being too fast, so that the power output is reduced to a suitable speed and torque, to ensure the safety of the rotary cultivator while running efficiently; by connecting the speed reduction transmission mechanism 220 with the clutch 210, the direct input and cut-off of the power of the gearbox 200 can be realized, unexpected situations are avoided, the engine 100 is protected, and the driving force of the rotary cultivator is stably output.

[0062] The shift transmission mechanism 230 includes a shift shaft 231, on which are sequentially arranged from left to right a shift fork gear C1 232, a shift fork gear C2 233, a fixed gear C3 234, a shift fork gear C4 235, a shift fork gear C5 236, and an idle gear C6 237. The shift fork gear C1 232 and the shift fork gear C2 233 are provided with a shift fork rod one 238. The shift fork gear C4 235 and the shift fork gear C5 236 are provided with a shift fork rod two 239. The shift fork rod one 238 and the shift fork rod two 239 are parallel. The shift fork gear C1 232, the shift fork gear C2 233, the shift fork gear C4 235, and the shift fork gear C5 236 are slidingly arranged on the shift shaft 231. The fixed gear C3 234 is engaged with the fixed gear B1 223. The reversing resistance transmission mechanism 240 includes a reversing resistance shaft 241, on which are sequentially arranged from left to right an idle gear D1 242, a fixed gear D2 243, and a fixed gear D3 244. The rotary tillage transmission mechanism 250 includes a rotary tillage shaft 251, on which are sequentially arranged from left to right a bevel gear E1 252, a fixed gear E2 253, a fixed gear E3 254, and a fixed gear E4 255. The fixed gear E4 255 is engaged with the idle gear D1 242. The walking transmission mechanism 260 includes a walking shaft 261, on which are sequentially arranged from left to right a fixed gear F1 262, a fixed gear F2 263, a fixed gear F3 264, and a bevel gear F4 265. The fixed gear F3 264 is engaged with the fixed gear D3 244. The fixed gear A1 211 of the clutch 210 is engaged with the fixed gear B2 223 of the speed reduction transmission mechanism 220, driving the speed reduction shaft 221 to rotate. The fixed gear B1 223 is engaged with the fixed gear C3 234, driving the shift shaft 231 to rotate, which drives the shift fork gear C1 232, the shift fork gear C2 233, the shift fork gear C4 235, and the shift fork gear C5 236 to rotate. Moving the shift fork rod one 238, the shift fork gear C1 232 and the shift fork gear C2 233 are engaged with the fixed gear E2 253 and the fixed gear E3 254 of the rotary tillage shaft 251, thereby controlling the rotary tillage working mechanism 300 to rotate. Moving the shift fork rod one 238, the shift fork gear C2 233 is engaged with the fixed gear D2 243 of the reversing resistance transmission mechanism 240, controlling the walking driving mechanism 400 to walk while avoiding the rotary tillage working mechanism 300 from rotating. The shift fork gear C1 232 is engaged with the idle gear D1 242 of the reversing resistance transmission mechanism 240, controlling the rotary tillage working mechanism 300 to reverse. Moving the shift fork rod two 239, the shift fork gear C4 235 and the shift fork gear C5 236 are engaged with the fixed gear F1 262, the fixed gear F2 263, and the fixed gear F3 264 of the walking shaft 261, thereby controlling the walking driving mechanism 400 to walk.The rotation tiller is moved by the shift fork rod one 238 and the shift fork rod two 239, so as to realize simple and efficient cooperation of walking and rotation tillage of the rotation tiller, and risks in reverse gear are avoided.

[0063] When the walking driving mechanism 400 is in the first gear, the shift fork gear C4235 is engaged with the fixed gear F1262; when the walking driving mechanism 400 is in the neutral gear, the shift fork gear C4235 and the shift fork gear C5236 are between the fixed gear F1262 and the fixed gear F2263; when the walking driving mechanism 400 is in the second gear, the shift fork gear C5236 is engaged with the fixed gear F2263; when the walking driving mechanism 400 is in the third gear, the shift fork gear C5236 is engaged with the idler gear C6237 pawl, and the idler gear C6237 is engaged with the fixed gear F3264; when the walking driving mechanism 400 is in the reverse gear, the shift fork gear C2233 is engaged with the fixed gear D2243, and the fixed gear D3244 is engaged with the fixed gear F3264; when the rotary tillage working mechanism 300 is in the reverse rotation, the shift fork gear C2233 is engaged with the idler gear D1242, and the idler gear D1242 is engaged with the fixed gear E3254; when the rotary tillage working mechanism 300 is in the neutral gear, the shift fork gear C1232 and the shift fork gear C2233 are between the fixed gear E2253 and the fixed gear E3254; when the rotary tillage working mechanism 300 is in the forward rotation slow gear, the shift fork gear C2233 is engaged with the fixed gear E3254; when the rotary tillage working mechanism 300 is in the forward rotation fast gear, the shift fork gear C1232 is engaged with the fixed gear E2253; when the walking driving mechanism 400 is in the first gear, the second gear, or the neutral gear, the idler gear C6237 is idling, and the rotation of the walking shaft 261 is controlled by the shift fork gear C4235 and the shift fork gear C5236, thereby controlling the walking of the walking driving mechanism 400; when the walking driving mechanism 400 is in the third gear, the shift fork gear C5236 is engaged with the idler gear C6237 pawl, and the idler gear C6237 is engaged with the fixed gear F3264, at this time, the idler gear C6237 is engaged with the fixed gear F3264, driving the rotation of the walking shaft 261, thereby driving the walking of the walking driving mechanism 400; when the rotary tillage working mechanism 300 is in the neutral gear, the forward rotation fast gear, or the forward rotation slow gear, the rotation of the rotary tillage shaft 251 is controlled by the shift fork gear C1232 and the shift fork gear C2233, thereby controlling the rotary tillage of the rotary tillage working mechanism 300; by engaging the shift fork gear C2233 with the fixed gear D2243, and engaging the fixed gear D3244 with the fixed gear F3264, at this time, the reversing resistance shaft 241 rotates, driving the rotation of the walking shaft 261 for the reverse gear, but the idler gear D1242 idles, and the rotary tillage shaft 251 does not rotate, so that the rotary tillage working mechanism 300 stops rotating, avoiding danger when reversing; when the shift fork gear C2233 is engaged with the idler gear D1242, and the idler gear D1242 is engaged with the fixed gear E3254, thereby driving the reverse rotation of the rotary tillage working mechanism 300, at this time, the idler gear D1242 idles, and the reversing resistance shaft 241 does not rotate, thereby not affecting the walking of the walking driving mechanism 400.

[0064] The reduction shaft 221, the shift shaft 231, the reversing blocking shaft 241, the rotary tillage shaft 251 and the walking shaft 261 are arranged in parallel; preferably, the rotary tillage shaft 251 and the walking shaft 261 are located on the same horizontal line; the power is sequentially transmitted through the parallel arrangement of the reduction shaft 221, the shift shaft 231, the reversing blocking shaft 241, the rotary tillage shaft 251 and the walking shaft 261; the rotary tillage work and the walking can be carried out separately and do not affect each other through the rotary tillage shaft 251 and the walking shaft 261 located on the same horizontal line; meanwhile, the shift fork rod one 238 and the shift fork rod two 239 can be moved in the same direction, thereby facilitating the movement of the shift fork rod one 238 and the shift fork rod two 239 and facilitating the gear shifting.

[0065] The gear shift 200 is provided with an armrest seat 500, the armrest seat 500 is provided with a gear shift mechanism 600, the gear shift mechanism 600 comprises a limiting plate 610, the limiting plate 610 is provided with a gear shift slot one and a gear shift slot two, the gear shift slot one is provided with a gear shift rod one 620, and the gear shift slot two is provided with a gear shift rod two 630; the armrest seat 500 is provided with a positioning column one 640 and a positioning column two 650, the positioning column one 640 is movably provided with an adjusting part one 660, the positioning column two 650 is movably provided with an adjusting part two 670, one end of the adjusting part one 660 is rotationally connected with the shift fork rod one 238, the other end of the adjusting part one 660 is connected with the gear shift rod one 620, one end of the adjusting part two 670 is rotationally connected with the shift fork rod two 239, and the other end of the adjusting part two 670 is connected with the gear shift rod two 630; the gear shift rod one 620 moves in the gear shift slot one, drives the adjusting part one 660 to rotate by a certain angle on the positioning column one 640, thereby driving the shift fork rod one 238 to move, and thereby controlling the walking reverse gear of the rotary tillage machine, the reverse rotation of the rotary tillage working mechanism 300, the neutral gear, the forward fast gear and the forward slow gear; the gear shift rod two 630 moves in the gear shift slot two, drives the adjusting part two 670 to rotate by a certain angle on the positioning column two 650, thereby driving the shift fork rod two 239 to move, and thereby controlling the walking one gear, the walking two gear, the walking three gear and the walking neutral gear of the walking driving mechanism 400.

[0066] The rotary tillage working mechanism 300 comprises a rotary tillage power transmission shaft 310 and a rotary tillage working shaft 320, the input end of the rotary tillage power transmission shaft 310 is provided with a bevel gear one 311, the output end of the rotary tillage power transmission shaft 310 is provided with a bevel gear two 312, the rotary tillage working shaft 320 is provided with a rotary tillage ring gear 321, the rotary tillage ring gear 321 is meshed with the bevel gear two 312, the rotary tillage power transmission shaft 310 is arranged obliquely, and the rotary tillage working shaft 320 is located on the lower side of the engine 100; the bevel gear one 311 is meshed with the bevel gear E1, thereby driving the rotary tillage power transmission shaft 310 to rotate, driving the bevel gear two 312 to mesh with the rotary tillage ring gear 321, and further driving the rotary tillage working shaft 320 to rotate and drive the rotary tiller to work.

[0067] The walking driving mechanism 400 comprises a walking driving shaft one 410, a walking driving shaft two 420, and a walking driving shaft three 430. The walking driving shaft one 410 is provided with a walking ring gear 411 and a walking fixed gear one 412. The walking driving shaft two 420 is provided with a walking steering gear two 421 and a walking steering gear three 422. The walking driving shaft three 430 is provided with a walking fixed gear four 431 and a walking fixed gear five 432. The walking steering gear two 421 and the walking fixed gear four 431 are engaged, and the walking steering gear three 422 and the walking fixed gear five 432 are engaged. The walking ring gear 411 and the bevel gear F4265 are engaged, thereby driving the walking driving shaft one 410 to rotate, making the walking fixed gear one 412 engage with the fixed gear two, driving the walking driving shaft two 420 to rotate, making the fixed gear two engage with the walking fixed gear four 431 and the fixed gear three engage with the fixed gear five, thereby driving the walking driving shaft three 430 to rotate, so that the walking driving mechanism 400 walks.

[0068] The walking driving shaft two 420 is provided with a steering adjusting member. The steering adjusting member comprises a left steering rod 423, a right steering rod 424, a spring one 425, and a spring two 426. The left steering rod 423 is connected with the walking steering gear two 421. The spring one 425 is sleeved on the walking driving shaft two 420 and connected with the walking steering gear two 421. The right steering rod 424 is connected with the walking steering gear three 422. The spring two 426 is arranged on the walking driving shaft two 420 and connected with the walking steering gear three 422.

[0069] The steering adjusting member is arranged on the walking driving shaft two 420, thereby controlling the left and right steering of the walking driving mechanism 400. The left steering rod 423 drives the walking steering gear two 421 to slide, thereby controlling the engagement and disengagement of the walking steering gear two 421 and the walking fixed gear four 431. The left steering rod 423 controls the disengagement of the walking steering gear two 421 and the walking fixed gear four 431, thereby slowing down the speed of the left wheel, so that the rotary tiller turns left. The right steering rod controls the disengagement of the walking steering gear three 422 and the walking fixed gear five 432, thereby slowing down the speed of the right wheel, so that the rotary tiller turns right.

[0070] The walking guiding mechanism 700 is arranged on the side of the engine 100 away from the gearbox 200. The walking guiding mechanism 700 comprises a limiting frame 701 and a guiding wheel 702. The walking guiding mechanism 700 is arranged on the side of the engine 100 away from the gearbox 200, thereby guiding the rotary tiller and cooperating with the walking driving mechanism 400, which is conducive to the stability of the rotary tiller during walking.

[0071] The above examples are only used to illustrate the technical solutions of the present application, and are not intended to limit them; based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative labor belong to the scope of protection of the present application. Although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement to part of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A rotary cultivator with a variable speed transmission, comprising an engine (100), characterized in that: The output end of the engine (100) is provided with a gearbox (200), the gearbox (200) comprises a variable speed transmission mechanism, the variable speed transmission mechanism comprises a shift transmission mechanism (230), a reversing blocking transmission mechanism (240), a rotary tillage transmission mechanism (250), a walking transmission mechanism (260); The rotary tillage transmission mechanism (250) is connected with a rotary tillage working mechanism (300), and the walking transmission mechanism (260) is connected with a walking driving mechanism (400); The shift transmission mechanism (230) is in transmission connection with the reversing blocking transmission mechanism (240), the reversing blocking transmission mechanism (240) is in transmission connection with the walking transmission mechanism (260), and the reversing blocking transmission mechanism (240) is disconnected with the rotary tillage transmission mechanism (250) for reverse gear.

2. The rotary cultivator with a variable speed transmission according to claim 1, characterized in that: The gearbox (200) further comprises a clutch (210) and a speed reduction transmission mechanism (220), and the speed reduction transmission mechanism (220) is in transmission connection with the shift transmission mechanism (230); The output end of the clutch (210) is provided with a fixed gear A1 (211); The speed reduction transmission mechanism (220) comprises a speed reduction shaft (221), and the speed reduction shaft (221) is sequentially provided with a fixed gear B1 (222) and a fixed gear B2 (223) from left to right, and the fixed gear A1 (211) is in mesh with the fixed gear B2 (223).

3. The rotary cultivator with a variable speed transmission according to claim 2, characterized in that: The shift transmission mechanism (230) comprises a shift shaft (231), and the shift shaft (231) is sequentially provided with a shift fork gear C1 (232), a shift fork gear C2 (233), a fixed gear C3 (234), a shift fork gear C4 (235), a shift fork gear C5 (236) and an idle gear C6 (237) from left to right, shift fork rods one (238) are arranged on the shift fork gear C1 (232) and the shift fork gear C2 (233), shift fork rods two (239) are arranged on the shift fork gear C4 (235) and the shift fork gear C5 (236), the shift fork rods one (238) and the shift fork rods two (239) are parallel, the shift fork gear C1 (232), the shift fork gear C2 (233), the shift fork gear C4 (235) and the shift fork gear C5 (236) are slidingly arranged on the shift shaft (231), and the fixed gear C3 (234) is in mesh with the fixed gear B1 (222); The reversing blocking transmission mechanism (240) comprises a reversing blocking shaft (241), and the reversing blocking shaft (241) is sequentially provided with an idle gear D1 (242), a fixed gear D2 (243) and a fixed gear D3 (244) from left to right; The rotary tillage transmission mechanism (250) comprises a rotary tillage shaft (251), and the rotary tillage shaft (251) is sequentially provided with a bevel gear E1 (252), a fixed gear E2 (253), a fixed gear E3 (254) and a fixed gear E4 (255) from left to right, and the fixed gear E4 (255) is in mesh with the idle gear D1 (242). The walking transmission mechanism (260) comprises a walking shaft (261), and the walking shaft (261) is sequentially provided with a fixed gear F1 (262), a fixed gear F2 (263), a fixed gear F3 (264) and a bevel gear F4 (265) from left to right, and the fixed gear F3 (264) is engaged with the fixed gear D3 (244).

4. The gang tiller with variable speed transmission of claim 3, wherein: When the walking driving mechanism (400) is in one gear, the shift fork gear C4 (235) is engaged with the fixed gear F1 (262); When the walking driving mechanism (400) is in neutral gear, the shift fork gear C4 (235) and the shift fork gear C5 (236) are located between the fixed gear F1 (262) and the fixed gear F2 (263); when the walking mechanism is in two gears, the shift fork gear C5 (236) is engaged with the fixed gear F2 (263); When the walking driving mechanism (400) is in three gears, the shift fork gear C5 (236) is engaged with the idler gear C6 (237) pawl, the idler gear C6 (237) is engaged with the fixed gear F3 (264); When the walking driving mechanism (400) is in reverse gear, the shift fork gear C2 (233) is engaged with the fixed gear D2 (243), and the fixed gear D3 (244) is engaged with the fixed gear F3 (264); When the rotary tillage working mechanism (300) is reversed, the shift fork gear C2 (233) is engaged with the idler gear D1 (242), and the idler gear D1 (242) is engaged with the fixed gear E3 (254); When the rotary tillage working mechanism (300) is in neutral gear, the shift fork gear C1 (232) and the shift fork gear C2 (233) are located between the fixed gear E2 (253) and the fixed gear E3 (254); When the rotary tillage working mechanism (300) is in positive rotation slow gear, the shift fork gear C2 (233) is engaged with the fixed gear E3 (254); When the rotary tillage working mechanism (300) is in positive rotation fast gear, the shift fork gear C1 (232) is engaged with the fixed gear E2 (253).

5. The gang tiller with variable speed transmission of claim 3, wherein: The reduction shaft (221), the shift shaft (231), the reversing blocking shaft (241), the rotary tillage shaft (251) and the walking shaft (261) are arranged in parallel.

6. The gang tiller with variable speed transmission of claim 5, wherein: The rotary tillage shaft (251) and the walking shaft (261) are located on the same horizontal line.

7. The gang tiller with variable speed transmission of claim 3, wherein: The gear box (200) is provided with an armrest seat (500), the armrest seat (500) is provided with a gear shifting mechanism (600), the gear shifting mechanism (600) comprises a limiting plate (610), the limiting plate (610) is provided with a gear shifting groove one and a gear shifting groove two, the gear shifting groove one is provided with a gear shifting rod one (620), and the gear shifting groove two is provided with a gear shifting rod two (630). The handrail seat (500) is provided with a positioning column I (640) and a positioning column II (650), the positioning column I (640) is movably provided with an adjusting piece I (660), the positioning column II (650) is movably provided with an adjusting piece II (670), one end of the adjusting piece I (660) is rotatably connected with the fork rod I (238), the other end of the adjusting piece I (660) is connected with the gear rod I (620), one end of the adjusting piece II (670) is rotatably connected with the fork rod II (239), and the other end of the adjusting piece II (670) is connected with the gear rod II (630).

8. The gang tiller with variable speed transmission of claim 1, wherein: The rotary tillage working mechanism (300) comprises a rotary tillage power transmission shaft (310) and a rotary tillage working shaft (320), the input end of the rotary tillage power transmission shaft (310) is provided with a bevel gear I (311), the output end of the rotary tillage power transmission shaft (310) is provided with a bevel gear II (312), and the rotary tillage working shaft (320) is provided with a rotary tillage ring gear (321); the rotary tillage ring gear (321) is engaged with the bevel gear II (312); the rotary tillage power transmission shaft (310) is obliquely arranged; and the rotary tillage working shaft (320) is located on the lower side of the engine (100).

9. The gang tiller with variable speed transmission of claim 1, wherein: The walking driving mechanism (400) comprises a walking driving shaft I (410), a walking driving shaft II (420) and a walking driving shaft III (430), the walking driving shaft I (410) is provided with a walking ring gear (411) and a walking fixed gear I (412), the walking driving shaft II (420) is slidably provided with a walking steering gear II (421) and a walking steering gear III (422), and the walking driving shaft III (430) is provided with a walking fixed gear IV (431) and a walking fixed gear V (432); the walking steering gear II (421) is engaged with the walking fixed gear IV (431); and the walking steering gear III (422) is engaged with the walking fixed gear V (432).

10. The gang tiller with variable speed transmission of claim 9, wherein: The walking driving shaft II (420) is provided with a steering adjusting piece; The steering adjusting piece comprises a left steering rod (423), a right steering rod (424), a spring I (425) and a spring II (426); The left steering rod (423) is connected with the walking steering gear II (421), the spring I (425) is sleeved on the walking driving shaft II (420), and the spring I (425) is connected with the walking steering gear II (421); The right steering rod (424) is connected with the walking steering gear III (422), the spring II (426) is arranged on the walking driving shaft II (420), and the spring II (426) is connected with the walking steering gear III (422).

11. The gang tiller with variable speed transmission of claim 1, wherein: The walking guiding mechanism (700) is arranged on the side, away from the gearbox (200), of the engine (100), and comprises a limiting frame (701) and a guiding wheel (702).

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