A transmission weeding component and an electric micro-tiller weeder having the component

Abstract

A transmission weeding component, comprising: a transmission mechanism, two forward-rotating cutter groups and two reverse-rotating cutter groups; both the forward-rotating cutter group and the reverse-rotating cutter group are composed of multiple blades installed on a spiral line; the center lines of the spiral lines where the two forward-rotating cutter groups and the two reverse-rotating cutter groups are located are collinear, and the two reverse-rotating cutter groups are located between the two forward-rotating cutter groups; the transmission mechanism is used to drive the forward-rotating cutter group and the reverse-rotating cutter group to rotate in opposite directions. In the present invention, the rotation directions of the forward-rotating cutter group and the reverse-rotating cutter group are opposite, and the two forward-rotating cutter groups are located outside the two reverse-rotating cutter groups. When the forward-rotating cutter group rotates clockwise as a rotary tillage cutter group and the reverse-rotating cutter group rotates counterclockwise as a weeding cutter group, the soil and weeds are discharged to one side, which can quickly remove the weeds, effectively improve the weeding efficiency and reduce the labor intensity.

Description

Technical Field

[0001] The present invention relates to the field of agricultural machinery, and particularly to a transmission weeding component and an electric micro-tiller with such a component. Background Art

[0002] As a healthy drink deeply loved by the general public, the issue of the safety of tea drinking has attracted increasing attention. Most of the cutter shafts of existing micro-tillers rotate forward (the rotation direction is the same as the forward direction of the micro-tiller). Although the rotary tillage and soil crushing operations are good, weeds are easily floating on the ground surface, and effective weed burial cannot be achieved, which affects the weeding effect, resulting in an increase in the dosage of herbicides in the later stage and affecting the quality of tea. Summary of the Invention

[0003] In order to solve the defect in the above-mentioned prior art that there is a lack of a micro-tiller that meets the requirements of tea garden operations, the present invention provides a transmission weeding component and an electric micro-tiller with such a component.

[0004] One of the objectives of the present invention adopts the following technical solutions:

[0005] A transmission weeding component includes: a transmission mechanism, two forward-rotating cutter groups, and two reverse-rotating cutter groups; both the forward-rotating cutter group and the reverse-rotating cutter group are composed of multiple blades installed on a spiral line; the center lines of the spiral lines where the two forward-rotating cutter groups and the two reverse-rotating cutter groups are located are collinear, and the two reverse-rotating cutter groups are located between the two forward-rotating cutter groups; the transmission mechanism is used to drive the forward-rotating cutter group and the reverse-rotating cutter group to rotate in opposite directions.

[0006] Preferably, the transmission mechanism includes: a left reverse-side gear, a right reverse-side gear, a left forward-side gear, a right forward-side gear, a left driven gear, and a right driven gear;

[0007] The left reverse-side gear, the left forward-side gear, the right forward-side gear, and the right reverse-side gear are arranged in sequence, and the central axes of the four are collinear; the left forward-side gear and the right forward-side gear are respectively used to drive a group of forward-rotating cutter groups to rotate synchronously, and the left reverse-side gear and the right reverse-side gear are respectively used to drive a group of reverse-rotating cutter groups to rotate synchronously;

[0008] The left driven gear is constantly meshed with the left reverse-side gear and the left forward-side gear, and the right driven gear is constantly meshed with the right reverse-side gear and the right forward-side gear; the left driven gear and the right driven gear rotate in opposite directions.

[0009] Preferably, it further includes a transmission housing, and both the left forward side gear and the right forward side gear are rotatably arranged on the transmission housing; the transmission mechanism further includes: a driving gear, an idle gear and a transmission frame plate; the transmission frame plate is installed on the transmission housing, and the driving gear, the idle gear, the left driven gear and the right driven gear are all rotatably installed on the transmission frame plate; the driving gear is connected to an external driving device as a driving part; the driving gear is constantly meshed with the idle gear and the left driven gear respectively, and the right driven gear is constantly meshed with the idle gear.

[0010] Preferably, the transmission mechanism further includes: a left forward cutting shaft, a right forward cutting shaft, a left reverse shaft sleeve and a right reverse shaft sleeve;

[0011] The left forward cutting shaft is coaxially and drivingly connected to the left forward side gear, the right forward cutting shaft is coaxially and drivingly connected to the right forward side gear, two forward cutting groups are respectively arranged on the left forward cutting shaft and the right forward cutting shaft, and the left forward side gear and the right forward side gear are located between the two forward cutting groups;

[0012] Both the left reverse shaft sleeve and the left reverse side gear are sleeved on the left forward cutting shaft loosely, and the left reverse shaft sleeve and the left reverse side gear are drivingly connected; both the right reverse shaft sleeve and the right reverse side gear are sleeved on the right forward cutting shaft loosely, and the right reverse shaft sleeve and the right reverse side gear are drivingly connected; two reverse cutting groups are respectively arranged on the left reverse shaft sleeve and the right reverse shaft sleeve.

[0013] Preferably, the rotation directions of the helical lines where the two forward cutting groups are located are opposite, and the rotation directions of the helical lines where the adjacent forward cutting group and reverse cutting group are located are opposite.

[0014] The second object of the present invention adopts the following technical solutions:

[0015] Preferably, it includes the above-mentioned transmission weeding component, and further includes a transmission, the transmission includes: a transmission housing, a transmission driving shaft and a transmission driven shaft, the transmission driving shaft and the transmission driven shaft are both rotatably installed on the transmission housing, the transmission driving shaft is used for externally connecting a rotary tillage motor, and the transmission driven shaft is used for providing driving force for the transmission mechanism;

[0016] The transmission driving shaft and the transmission driven shaft are drivingly connected by a chain and a gear, and the transmission ratio between the transmission driving shaft and the transmission driven shaft is adjustable.

[0017] Preferably, the transmission further includes: a gear shift handle, a first gear driving sprocket, a first gear driven sprocket, a first gear transmission chain, a second gear transmission chain, a second gear driven sprocket, a second gear driving sprocket and a shift finger pin sliding disc;

[0018] The first-gear driven sprocket and the second-gear driven sprocket are both sleeved on the transmission driven shaft and are both drivingly connected to the transmission driven shaft; the first-gear driving sprocket and the second-gear driving sprocket are both sleeved loosely on the transmission driving shaft, and the shift finger pin sliding disk is slidably arranged on the transmission driving shaft and is spline-connected to the transmission driving shaft; the first-gear driving sprocket and the second-gear driving sprocket are drivingly connected to the transmission driving shaft through the shift finger pin sliding disks at different positions.

[0019] The first-gear driven sprocket and the first-gear driving sprocket are drivingly connected through a first-gear transmission chain, and the second-gear driven sprocket and the second-gear driving sprocket are drivingly connected through a second-gear transmission chain; the gear shift lever is connected to the shift finger pin sliding disk for adjusting its position.

[0020] Preferably, chain tensioning devices are respectively arranged on the transmission housing corresponding to the first-gear transmission chain and the second-gear transmission chain; the chain tensioning device includes: a support, a tensioning seat, a tensioning wheel, a pin shaft, a tension spring and a tensioning screw.

[0021] The support is installed on the transmission housing, and the tensioning seat is slidably arranged on the support; one end of the tensioning screw passes through the support and is connected to the tensioning seat through the tension spring, and the other end extends out of the transmission housing; a nut matching the tensioning screw is arranged outside the transmission housing; the advancing and retreating direction of the tensioning screw and the stretching direction of the tension spring are both the same as the sliding direction of the tensioning seat on the support.

[0022] The tensioning wheel is rotatably installed on the tensioning seat, and the first-gear transmission chain and the second-gear transmission chain respectively bypass the corresponding tensioning wheels.

[0023] Preferably, the transmission further includes: a shift fork; a guide rail is arranged on the transmission housing, and a slider is slidably arranged on the guide rail; one end of the shift fork is connected to the shift finger pin sliding disk, and the other end is connected to the slider; the gear shift lever is used to drive the shift fork to slide along the guide rail, and the shift finger pin sliding disk follows the shift fork to slide axially along the transmission driving shaft.

[0024] A sunken hole is arranged at the bottom of the guide rail, a compression spring is arranged in the sunken hole, and a positioning ball is arranged at the top of the compression spring; a plurality of hemispherical grooves matching the positioning ball are arranged on the slider.

[0025] Preferably, it further includes a traveling transmission component and an armrest frame component.

[0026] The traveling transmission component includes: a traveling output shaft, a traveling driving shaft, a left jaw clutch, a right jaw clutch, a left wheel and a right wheel; the traveling driving shaft is drivingly connected to the left wheel through the left jaw clutch, and the traveling driving shaft is connected to the right wheel through the right jaw clutch; the traveling output shaft is driven by a traveling motor, and the traveling output shaft is drivingly connected to the traveling driving shaft through a transmission chain.

[0027] The handrail frame assembly includes: a left steering wire, a right steering wire, a left steering handbrake, and a right steering handbrake; the left steering handbrake is connected to a left jaw clutch through the left steering wire to control the engagement and disengagement of the left jaw clutch, and the right steering handbrake is connected to a right jaw clutch through the right steering wire to control the engagement and disengagement of the right jaw clutch;

[0028] The handrail frame assembly further includes: a handrail frame; the handrail frame is installed on the transmission housing through a telescopic rod, and the height of the handrail frame can be adjusted by the telescopic rod;

[0029] The handrail frame is provided with a traveling speed adjustment grip and a rotary tillage speed adjustment handle for easy gripping, and the left steering handbrake and the right steering handbrake are respectively arranged on the traveling speed adjustment grip and the rotary tillage speed adjustment handle.

[0030] In the present invention, when the rotary tillage motor is started, when the shift finger pin sliding disk is in the first gear or second gear position, the variable speed driving shaft drives the variable speed driven shaft to rotate, the variable speed driven shaft drives the driving gear to rotate, the driving gear drives the left driven gear to rotate, and the driving gear also drives the right driven gear to rotate in the opposite direction relative to the left driven gear through an idler gear. Thus, the left forward side gears and the right forward side gears rotate in the same direction, the left reverse side gears and the right reverse side gears rotate in the same direction, and the left reverse side gears and the right reverse side gears rotate in the opposite direction relative to the left forward side gears and the right forward side gears.

[0031] After the traveling motor is started, it drives the traveling output shaft to rotate. The traveling output shaft drives the traveling driving shaft to rotate through a small sprocket, a transmission chain, and a large sprocket. The traveling driving shaft drives the left wheel and the right wheel to rotate through the left jaw clutch and the right jaw clutch respectively, so as to drive the micro-tiller to travel.

[0032] The advantages of the present invention are as follows:

[0033] (1) The rotation directions of the forward rotation cutter groups and the reverse rotation cutter groups are opposite, and the two forward rotation cutter groups are located outside the two reverse rotation cutter groups. When the forward rotation cutter groups rotate clockwise as the rotary tillage cutter groups and the reverse rotation cutter groups rotate counterclockwise as the weeding cutter groups, the soil and weeds are discharged to one side, which can quickly remove weeds, effectively improve the weeding efficiency, and reduce the labor intensity.

[0034] (2) The rotation directions of the helical lines where the two forward rotation cutter groups are located are opposite, and the rotation directions of the helical lines where the adjacent forward rotation cutter group and the reverse rotation cutter group are located are opposite. In this way, while rotary tilling and weeding, the forward rotation cutter groups push the soil to the side away from the adjacent reverse rotation cutter group, and the reverse rotation cutter groups push the soil to the side towards the adjacent forward rotation cutter group, playing a role in ditch opening, eliminating the manpower and material resources required for ditch opening.

[0035] (3) The micro-tiller weeder provided in the present invention has a traveling motor driving the wheels through a transmission chain, being suitable for working in harsh environments such as sandy soil, improving the trouble-free working time of the micro-tiller weeder, ensuring its working stability, and extending the service life of the micro-tiller weeder.

[0036] (4) In the present invention, two motors are respectively used to drive the traveling transmission mechanism and the micro-tiller weeding mechanism, achieving the independent movement of the cutter group and the wheels, making the machine work more flexibly. At the same time, using motor drive is beneficial to protecting the tea garden environment and improving the tea quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1 is a schematic diagram of the overall structure of the present invention;

[0038] Figure 2 is a schematic diagram of the transmission and weeding component in the present invention;

[0039] Figure 3 is a schematic diagram of the interior of the weeding component in the present invention;

[0040] Figure 4 is a schematic diagram of the structure of the traveling transmission component in the present invention;

[0041] Figure 5 is a connection structure diagram of the traveling driving shaft and the wheels in the present invention;

[0042] Figure 6 is a connection structure diagram of the traveling motor and the traveling output shaft in the present invention;

[0043] Figure 7 is a schematic diagram of the structure of the transmission in the present invention;

[0044] Figure 8 is a schematic diagram of the side of the transmission variable-speed driving shaft in the present invention;

[0045] Figure 9 is a schematic diagram of the side of the transmission variable-speed driven shaft in the present invention;

[0046] Figure 10 is a schematic diagram of the chain tensioning device in the transmission in the present invention;

[0047] Figure 11 is a schematic diagram of the shift fork in the transmission in the present invention;

[0048] Figure 12 is a schematic diagram of the cooperation between the slider and the slider in the transmission in the present invention;

[0049] Figure 13 is a schematic diagram when the micro-tiller is folded in the present invention;

[0050] Figure 14Schematic diagram of the distribution of the cutter shaft of the micro-tiller in the present invention.

[0051] Illustration:

[0052] 1 - Rotary tillage motor; 2 - Travel motor; 3 - Lithium battery; 4 - Baffle; 5 - Forward rotation cutter group; 6 - Transmission housing; 7 - Reverse rotation cutter group; 8 - Motor controller;

[0053] 111 - Travel speed adjustment grip; 112 - Rotary tillage speed adjustment grip; 121 - Left steering handbrake; 122 - Right steering handbrake; 131 - Left steering wire; 132 - Right steering wire; 14 - Handrail; 15 - Support rod; 16

[0054] - Sleeve;

[0055] 211 - First gear driving sprocket; 212 - First gear driven sprocket; 221 - Transmission driving shaft; 222 - Transmission driven shaft; 231 - First gear transmission chain; 232 - Second gear transmission chain; 241 - Second gear driven sprocket; 242 - Second gear driving sprocket; 25 - Gear lever; 26 - Driven shaft bushing; 27 - Shift finger pin sliding disc; 28 - Transmission housing; 29 - Support plate;

[0056] 311 - Left wheel; 312 - Right wheel; 321 - Left driven block; 322 - Right driven block; 331 - Left driving block; 332 - Right driving block; 341 - Left compression spring; 342 - Right compression spring; 351 - Left half shaft; 352 - Right half shaft; 361 - Left fork; 362 - Right fork; 371 - Left fork support; 372 - Right fork support; 301 - Small sprocket; 308 - Large sprocket; 302 - Travel driving shaft; 303 - Transmission chain; 304 - Travel output shaft; 305 - Travel frame; 306 - Coupling; 307 - Dust cover;

[0057] 411 - Left forward rotation cutter shaft; 412 - Right forward rotation cutter shaft; 421 - Left reverse shaft bushing; 422 - Right reverse shaft bushing; 431 - Left reverse side gear; 432 - Right reverse side gear; 441 - Left forward rotation side gear; 442 - Right forward rotation side gear; 451 - Left driven gear; 452 - Right driven gear; 406 - Gear fixing seat; 407 - Driving gear; 408 - Idler gear; 409 - Transmission frame plate;

[0058] 501 - Gasket; 502 - Pin shaft; 503 - Split pin; 504 - Pull spring; 505 - Tensioning screw; 506 - Nut; 507 - Support; 508 - Tensioning seat; 509 - Tensioning wheel;

[0059] 601 - Guide rail; 602 - Fork; 603 - Slide block; 604 - Hemispherical slot hole; 605 - Positioning ball; 606 - Compression spring. Specific implementation method

[0060] A transmission weeding component proposed in this embodiment includes a transmission mechanism, two forward-rotating cutter groups 5, and two reverse-rotating cutter groups 7; both the forward-rotating cutter group 5 and the reverse-rotating cutter group 7 are composed of multiple blades installed on a spiral line. The centerlines of the spiral lines where the two forward-rotating cutter groups 5 and the two reverse-rotating cutter groups 7 are located are collinear, and the two reverse-rotating cutter groups 7 are located between the two forward-rotating cutter groups 5. The transmission mechanism is used to drive the forward-rotating cutter group 5 and the reverse-rotating cutter group 7 to rotate in opposite directions.

[0061] In this way, when the forward-rotating cutter group 5 rotates clockwise as a rotary tillage cutter group and the reverse-rotating cutter group 7 rotates counterclockwise as a weeding cutter group, the soil and weeds are discharged to one side, which can quickly remove weeds, effectively improve the weeding efficiency, and reduce the labor intensity.

[0062] Specifically, in this embodiment, the rotation directions of the spiral lines where the two forward-rotating cutter groups 5 are located are opposite, and the rotation directions of the spiral lines where the adjacent forward-rotating cutter group 5 and reverse-rotating cutter group 7 are located are opposite. In this way, while rotary tillage and weeding, the forward-rotating cutter group 5 pushes the soil to the side away from the reverse-rotating cutter group 7, and the reverse-rotating cutter group 7 pushes the soil to the side away from the forward-rotating cutter group 5, playing a role in ditch opening and eliminating the manpower and material resources required for ditch opening.

[0063] Specifically, in this embodiment, the transmission mechanism includes a left reverse-side gear 431, a right reverse-side gear 432, a left forward-side gear 441, a right forward-side gear 442, a left driven gear 451, and a right driven gear 452.

[0064] The left reverse-side gear 431, the left forward-side gear 441, the right forward-side gear 442, and the right reverse-side gear 432 are arranged in sequence, and the central axes of the four are collinear. The left forward-side gear 441 and the right forward-side gear 442 are respectively used to drive a group of forward-rotating cutter groups 5 to rotate synchronously, and the left reverse-side gear 431 and the right reverse-side gear 432 are respectively used to drive a group of reverse-rotating cutter groups 7 to rotate synchronously.

[0065] The left driven gear 451 is constantly meshed with the left reverse-side gear 431 and the left forward-side gear 441 respectively, so as to realize that the left driven gear 451 drives the left reverse-side gear 431 and the left forward-side gear 441 to rotate in opposite directions. The right driven gear 452 is constantly meshed with the right reverse-side gear 432 and the right forward-side gear 442 respectively, so as to realize that the right driven gear 452 drives the right reverse-side gear 432 and the right forward-side gear 442 to rotate in opposite directions. At the same time, the left driven gear 451 and the right driven gear 452 rotate in opposite directions, so that the left forward-side gear 441 and the right forward-side gear 442 rotate in the same direction, and the left reverse-side gear 431 and the right reverse-side gear 432 rotate in the same direction.

[0066] Specifically, the transmission weeding assembly further includes a transmission housing 6, and the left forward rotation side gear 441 and the right forward rotation side gear 442 are both rotatably mounted on the transmission housing 6. Specifically, the left forward rotation side gear 441 and the right forward rotation side gear 442 can be rotatably mounted on the transmission housing 6 via bearing seats, respectively, to ensure stable rotation of the left forward rotation side gear 441 and the right forward rotation side gear 442. In this embodiment, a gear fixing seat 406 can be further provided between the left forward rotation side gear 441 and the right forward rotation side gear 442 and the bearing seats to further ensure stable rotation of the left forward rotation side gear 441 and the right forward rotation side gear 442.

[0067] The transmission mechanism also includes a driving gear 407, an idler gear 408, and a transmission frame plate 409. The transmission frame plate 409 is mounted on the transmission housing 6. The driving gear 407, the idler gear 408, the left driven gear 451, and the right driven gear 452 are all rotatably mounted on the transmission frame plate 409. The driving gear 407 serves as a driving element for connection to an external drive device. The driving gear 407 is in constant meshing engagement with the idler gear 408 and the left driven gear 451, respectively. The right driven gear 452 is in constant meshing engagement with the idler gear 408.

[0068] Thus, during operation, the external driving device drives the driving gear 407 to rotate, and the driving gear 407 drives the left driven gear 451 to rotate. The driving gear 407 also drives the right driven gear 452 to rotate in the opposite direction relative to the left driven gear 451 through the idler gear 408 .

[0069] In this embodiment, the transmission mechanism further includes: a left forward-rotating blade shaft 411 , a right forward-rotating blade shaft 412 , a left reverse-rotating shaft sleeve 421 , and a right reverse-rotating shaft sleeve 422 .

[0070] The left forward-rotating cutter shaft 411 is coaxially connected to the left forward-rotating side gear 441, and the right forward-rotating cutter shaft 412 is coaxially connected to the right forward-rotating side gear 442. The two forward-rotating cutter groups 5 are respectively arranged on the left forward-rotating cutter shaft 411 and the right forward-rotating cutter shaft 412, and the left forward-rotating side gear 441 and the right forward-rotating side gear 442 are located between the two forward-rotating cutter groups 5. In this way, the left forward-rotating side gear 441 drives one forward-rotating cutter group 5 to rotate via the left forward-rotating cutter shaft 411, and the right forward-rotating side gear 442 drives the other forward-rotating cutter group 5 to rotate via the right forward-rotating cutter shaft 412.

[0071] The left reverse shaft sleeve 421 and the left reverse side gear 431 are both sleeved on the left forward cutting tool shaft 411, and the left reverse shaft sleeve 421 and the left reverse side gear 431 are drivingly connected. The right reverse shaft sleeve 422 and the right reverse side gear 432 are both sleeved on the right forward cutting tool shaft 412, and the right reverse shaft sleeve 422 and the right reverse side gear 432 are drivingly connected; two reverse cutting tool groups 7 are respectively arranged on the left reverse shaft sleeve 421 and the right reverse shaft sleeve 422. Thus, the left reverse side gear 431 drives one reverse cutting tool group 7 to rotate through the left reverse shaft sleeve 421, and the right reverse side gear 432 drives the other reverse cutting tool group 7 to rotate through the right reverse shaft sleeve 422.

[0072] Specifically, in this embodiment, the left reverse shaft sleeve 421 and the left forward cutting tool shaft 411 can be in bearing fit to avoid movement interference; similarly, the right reverse shaft sleeve 422 and the right forward cutting tool shaft 412 are also in bearing fit.

[0073] In this embodiment, an electric micro-tiller and weeder for tea gardens is also proposed, which includes the transmission and weeding component provided in this embodiment and also includes a transmission. The transmission includes: a transmission housing 28, a transmission driving shaft 221 and a transmission driven shaft 222. The transmission driving shaft 221 and the transmission driven shaft 222 are both rotatably installed on the transmission housing 28. Specifically, bearing seats can be provided at the docking positions of the transmission driving shaft 221 and the transmission housing 28 and at the docking positions of the transmission driven shaft 222 and the transmission housing 28 respectively to achieve rotational installation. The transmission driving shaft 221 is used to externally connect a rotary tillage motor 1, and the transmission driven shaft 222 is used to provide driving force for the transmission mechanism. The transmission driving shaft 221 and the transmission driven shaft 222 are drivingly connected by a chain and gears, and the transmission ratio between the transmission driving shaft 221 and the transmission driven shaft 222 is adjustable.

[0074] Specifically, the transmission further includes: a gear shift handle 25, a first gear driving sprocket 211, a first gear driven sprocket 212, a first gear transmission chain 231, a second gear transmission chain 232, a second gear driven sprocket 241, a second gear driving sprocket 242 and a shift finger sliding disk 27.

[0075] The first gear driven sprocket 212 and the second gear driven sprocket 241 are both sleeved on the transmission driven shaft 222 and are both drivingly connected to the transmission driven shaft 222. The first gear driving sprocket 211 and the second gear driving sprocket 242 are both sleeved on the transmission driving shaft 221, and the shift finger sliding disk 27 is slidably arranged on the transmission driving shaft 221 and is spline-connected to the transmission driving shaft 221. The first gear driving sprocket 211 and the second gear driving sprocket 242 are drivingly connected to the transmission driving shaft 221 through the shift finger sliding disk 27 at different positions.

[0076] Specifically, both the first - gear driving sprocket 211 and the second - gear driving sprocket 242 are provided with pin grooves that cooperate with the pins of the shift pin slide plate 27. When the shift pin slide plate 27 is located at the middle position between the first - gear driving sprocket 211 and the second - gear driving sprocket 242, both the first - gear driving sprocket 211 and the second - gear driving sprocket 242 rotate idly on the variable - speed driving shaft 221; when the shift pin slide plate 27 shifts towards the first - gear driving sprocket 211, the shift pin slide plate 27 and the first - gear driving sprocket 211 are in driving connection through the cooperation of the pins and the pin grooves; when the shift pin slide plate 27 shifts towards the second - gear driving sprocket 242, the shift pin slide plate 27 and the second - gear driving sprocket 242 are in driving connection through the cooperation of the pins and the pin grooves.

[0077] The first - gear driven sprocket 212 and the first - gear driving sprocket 211 are in driving connection through the first - gear transmission chain 231, and the second - gear driven sprocket 241 and the second - gear driving sprocket 242 are in driving connection through the second - gear transmission chain 232. The gear shift lever 25 is connected to the shift pin slide plate 27 for adjusting its position. Thus, when the shift pin slide plate 27 shifts towards the first - gear driving sprocket 211, the variable - speed driving shaft 221 drives the variable - speed driven shaft 222 through the first - gear driving sprocket 211, the first - gear transmission chain 231 and the first - gear driven sprocket 212; when the shift pin slide plate 27 shifts towards the second - gear driving sprocket 242, the variable - speed driving shaft 221 drives the variable - speed driven shaft 222 through the second - gear driving sprocket 242, the second - gear transmission chain 232 and the second - gear driven sprocket 241. Thus, by adjusting the position of the shift pin slide plate 27, the transmission ratio between the variable - speed driving shaft 221 and the variable - speed driven shaft 222 can be adjusted. In this embodiment, a driven - shaft bushing 26 is also sleeved on the variable - speed driven shaft 222, and the driven - shaft bushing 26 is located between the first - gear driven sprocket 212 and the second - gear driven sprocket 241 to ensure the stability of the relative positions between the first - gear driven sprocket 212 and the second - gear driven sprocket 241.

[0078] In this embodiment, the variable - speed driven shaft 222 is connected to the driving gear 407, and the variable - speed driving shaft 221 is externally connected to the rotary tillage motor 1. Thus, through the adjustment of the transmission ratio between the variable - speed driving shaft 221 and the variable - speed driven shaft 222, the speed change of the forward - rotating cutter group 5 and the reverse - rotating cutter group 7 is achieved when the power of the rotary tillage motor 1 remains unchanged.

[0079] The transmission also includes: a shift fork 602. A guide rail 601 is provided on the transmission housing 28, and a slider 603 is slidably arranged on the guide rail 601. One end of the shift fork 602 is connected to the shift pin slide plate 27, and the other end is connected to the slider 603. The gear shift lever 25 is used to drive the shift fork 602 to slide along the guide rail 601, and the shift pin slide plate 27 slides axially along the variable - speed driving shaft 221 following the shift fork 602.

[0080] The bottom of the guide rail 601 is provided with a counterbore, a compression spring 606 is arranged in the counterbore, and a positioning ball 605 is arranged on the top of the compression spring 606; a plurality of hemispherical grooves 604 matching the positioning balls 605 are arranged on the slider 603.

[0081] Specifically, in this embodiment, three hemispherical grooves 604 are arranged at the bottom of the guide rail 601, and the three hemispherical grooves 604 respectively correspond to the first gear, neutral gear and second gear. In this way, through the cooperation of the hemispherical groove 604 and the positioning ball 605, the slider 603 can be positioned, so as to realize the positioning of the shift finger pin slide plate 27, and the accidental shifting of the shift finger pin slide plate 27 can be avoided, ensuring the working safety of the micro-tiller weeder.

[0082] In this embodiment, chain tensioning devices are respectively arranged on the transmission housing 28 corresponding to the first-gear drive chain 231 and the second-gear drive chain 232. The chain tensioning device includes: a tensioning wheel 509, a tension spring 504, a tensioning screw 505, a support 507 and a tensioning seat 508.

[0083] The support 507 is installed on the transmission housing 28, and the tensioning seat 508 is slidably arranged on the support 507; one end of the tensioning screw 505 passes through the support 507 and is connected to the tensioning seat 508 through the tension spring 504, and the other end extends out of the transmission housing 28. A nut 506 matching the tensioning screw 505 is arranged outside the transmission housing 28. The advancing and retreating direction of the tensioning screw 505 and the stretching direction of the tension spring 504 are both the same as the sliding direction of the tensioning seat 508 on the support 507. In this way, by the relative rotation of the tensioning screw 505 and the nut 506, the length of the tensioning screw 505 extending into the side of the support 507 close to the tensioning seat 508 can be adjusted, so as to pull the tensioning seat 508 to slide through the tension spring 504, so as to adjust the relative position of the tensioning seat 508 on the support 507. During specific implementation, a slotted head can be arranged at one end of the tensioning screw 505 extending out of the transmission housing 28. When the chain tightness needs to be adjusted, an ordinary screwdriver is inserted into the slotted head of the tensioning screw 505 to fix the tensioning screw 505, and at the same time, a wrench is used to rotate the nut 506 on the tensioning screw 505, so as to adjust the tension of the tension spring 504 on the tensioning seat 508, thereby adjusting the tightness of the chain.

[0084] The tensioning pulley 509 is rotatably mounted on the tensioning seat 508, and the first-gear drive chain 231 and the second-gear drive chain 232 respectively pass around the corresponding tensioning pulley 509. Thus, with the change in the relative position of the tensioning seat 508 on the support 507, the position change of the tensioning pulley 509 relative to the transmission housing 28 is achieved, thereby realizing the change in the running trajectories of the first-gear drive chain 231 and the second-gear drive chain 232, and realizing the tension adjustment of the first-gear drive chain 231 and the second-gear drive chain 232. In this embodiment, the tension adjustment of the chain is achieved through the rotational mounting of the tensioning pulley 509 and the elastic movement of the tension spring 504. The former reduces the movement wear of the chain, and the latter ensures the reliable operation of the chain through adaptive stress adjustment.

[0085] Specifically, in this embodiment, the chain tensioning device further includes: a pin shaft 502 and a split pin 503. In this embodiment, the support 507 adopts a U-shaped plate structure, and strip-shaped holes are provided on its opposite side walls. The tensioning seat 508 is sleeved on the pin shaft 502 and is located inside the circumference of the support 507. Both ends of the pin shaft 502 respectively extend out through the corresponding strip-shaped holes. A gasket 501 is sleeved on the end of the pin shaft 502 extending outside the support 507, and a split pin 503 is further provided at the end of the pin shaft 502, so that the tensioning seat 508 can only slide along the strip-shaped holes on the support 507 through the cooperation of the split pin 503 and the gasket 501. The tensioning pulley 509 is sleeved on the pin shaft 502.

[0086] The electric micro-tiller and weeder for tea gardens in this embodiment further includes a traveling transmission component and a handrail frame component.

[0087] The traveling transmission component includes: a traveling output shaft 304, a traveling drive shaft 302, a left jaw clutch, a right jaw clutch, a left wheel 311, and a right wheel 312; the traveling drive shaft 302 is in transmission connection with the left wheel 311 through the left jaw clutch, and the traveling drive shaft 302 is connected to the right wheel 312 through the right jaw clutch; the traveling output shaft 304 is driven by the traveling motor 2, and the traveling output shaft 304 is in transmission connection with the traveling drive shaft 302 through a drive chain 303. Thus, the traveling transmission component is driven by a motor and uses chain transmission, which is suitable for working in harsh environments such as sandy soil, improves the trouble-free working time of the micro-tiller and weeder, ensures its working stability, and extends the service life of the micro-tiller and weeder.

[0088] Specifically, in this embodiment, the transmission housing 6 and the transmission housing 28 cooperate to form a vehicle frame, that is, the transmission housing 28 and the transmission housing 6 are relatively stationary. The traveling output shaft 304 is rotatably provided on the support plate 29 connected to the transmission housing 28. Specifically, a bearing seat can be provided at the docking position of the traveling output shaft 304 and the support plate 29 to ensure the stable rotation of the traveling output shaft 304.

[0089] The handrail frame assembly includes: a left steering wire 131, a right steering wire 132, a left steering handbrake 121 and a right steering handbrake 122; the left steering handbrake 121 is connected to a left jaw clutch through the left steering wire 131 to control the engagement and disengagement of the left jaw clutch, and the right steering handbrake 122 is connected to a right jaw clutch through the right steering wire 132 to control the engagement and disengagement of the right jaw clutch.

[0090] The walking transmission assembly further includes: a walking motor 2, a small sprocket 301, a large sprocket 308 and a transmission chain 303. The walking driving shaft 302 is used to drive the left wheel 311 and the right wheel 312 to rotate synchronously. The large sprocket 308 is sleeved on the walking driving shaft 302 and is in transmission connection. The small sprocket 301 is sleeved on the walking output shaft 304 and is in transmission connection. The large sprocket 308 and the small sprocket 301 are in transmission connection through the transmission chain 303. The walking motor 2 is connected to the walking output shaft through a coupling 306, so as to drive the walking output shaft 304 to rotate.

[0091] In this way, in this embodiment, after the walking motor 2 drives the small sprocket 301 to rotate through the walking output shaft 304, the small sprocket 301 drives the large sprocket 308 to rotate through the transmission chain 303, and the large sprocket 308 drives the left wheel 311 and the right wheel 312 to rotate through the walking driving shaft 302; thus, the walking of the electric micro-tiller and weeder for tea gardens is realized through the cooperation of the left wheel 311, the right wheel 312, the forward rotation cutter group 5 and the reverse rotation cutter group 7.

[0092] The walking transmission assembly further includes: a left driving block 331, a right driving block 332, a left driven block 321, a right driven block 322, a left half shaft 351, a right half shaft 352, a left fork 361, a left fork support 371, a right fork 362, a right fork support 372, a walking machine frame 305, a left compression spring 341 and a right compression spring 342. Among them, the left driving block 331 and the left driven block 321 form a left jaw clutch, and the right driving block 332 and the right driven block 322 form a right jaw clutch. Specifically, during implementation, dust covers 307 can be respectively arranged on the left jaw clutch and the right jaw clutch.

[0093] The walking machine frame 305 is arranged on the transmission housing 6. The walking driving shaft 302, the left half shaft 351 and the right half shaft 352 are all rotatably arranged on the walking machine frame 305, and the walking driving shaft 302, the left half shaft 351 and the right half shaft 352 are coaxially arranged. Specifically, in this embodiment, bearing seats can be respectively arranged at the docking positions of the walking driving shaft 302, the left half shaft 351 and the right half shaft 352 and the walking machine frame 305 to ensure the stable rotation of the walking driving shaft 302, the left half shaft 351 and the right half shaft 352.

[0094] The left driving block 331 and the right driving block 332 are respectively slidably arranged at both ends of the walking driving shaft 302 and are both in transmission connection with the walking driving shaft 302. During specific implementation, it can be set that both the left driving block 331 and the right driving block 332 are in fit with the walking driving shaft 302 through splines.

[0095] The left driven block 321 is coaxially arranged at one end of the left half shaft 351, the other end of the left half shaft 351 is connected to the left wheel 311, the right driven block 322 is coaxially arranged at one end of the right half shaft 352, and the other end of the right half shaft 352 is the right wheel 312.

[0096] Both the left compression spring 341 and the right compression spring 342 are sleeved on the walking driving shaft 302. The free end of the left compression spring 341 is connected to the left driving block 331, and the free end of the right compression spring 342 is connected to the right driving block 332. The left compression spring 341 is used to push the left driving block 331 to engage with the left driven block 321, and the right compression spring 342 is used to push the right driving block 332 to engage with the right driven block 322. When the left driving block 331 engages with the left driven block 321, the left half shaft 351 drives the left wheel 311 to rotate synchronously with the walking driving shaft 302; when the left compression spring 341 is compressed, the left driving block 331 is separated from the left driven block 321, and the driving force of the left wheel 311 is disconnected. When the right driving block 332 engages with the right driven block 322, the right half shaft 352 drives the right wheel 312 to rotate synchronously with the walking driving shaft 302; when the right compression spring 342 is compressed, the right driving block 332 is separated from the right driven block 322, and the driving force of the right wheel 312 is disconnected.

[0097] Both the left fork support 371 and the right fork support 372 are arranged on the walking frame 305. The left steering handbrake 121 is used to pull the left fork 361 through the left steering wire 131 to push the left driving block 331 to compress the left compression spring 341, so that the left driving block 331 is separated from the left driven block 321. The right steering handbrake 122 is used to pull the right fork 362 through the right steering wire 132 to push the right driving block 332 to compress the right compression spring 342, so that the right driving block 332 is separated from the right driven block 322. That is, the left fork 361 makes a lever movement with the left fork support 371 as the fulcrum, and the right fork 362 makes a lever movement with the right fork support 372 as the fulcrum. Thus, under normal conditions, the left driving block 331 engages with the left driven block 321, and the right driving block 332 engages with the right driven block 322, so that the walking driving shaft 302 drives the left half shaft 351 and the right half shaft 352 to rotate synchronously, the left wheel 311 rotates synchronously with the left half shaft 351, and the right wheel 312 rotates synchronously with the right half shaft 352; thereby realizing that the walking driving shaft 302 drives the left wheel 311 and the right wheel 312 to rotate.

[0098] When the left steering handbrake 121 is pinched, the left driving block 331 is separated from the left driven block 321, cutting off the power of the left wheel 311. At this time, the right wheel 312 continues to rotate, realizing a left turn. After the turning is completed, the handle of the left steering wire 131 is released, and the compressed left compression spring 341 resumes, and the left driving block 331 and the left driven block 321 are re-engaged, thus resuming straight-line travel. The right turn is the same.

[0099] In the present invention, the armrest frame assembly further includes: an armrest frame 14, a support rod 15, and a sleeve 16.

[0100] The sleeve 16 is installed on the transmission housing 6. The support rod 15 is inserted into the sleeve 16 and is slidably connected. The support rod 15 and the sleeve 16 cooperate to form a telescopic rod. The armrest frame 14 is provided on the support rod 15 so as to adjust the height of the armrest frame 14 through the telescopic rod, thereby adapting to operators of different heights. The armrest frame 14 is hinged to the support rod 15 so that when the machine is idle, the armrest frame 14 and the telescopic rod are folded and overlapped, facilitating placement.

[0101] In this embodiment, the armrest frame is provided with a travel speed adjustment grip 111 and a rotary tillage speed adjustment handle 112 that are convenient for holding. The handles of the left steering wire 131 and the right steering wire 132 are respectively provided on the travel speed adjustment grip 111 and the rotary tillage speed adjustment handle 112. At the same time, the micro-tiller weeder also has a motor control box 8. The motor control box 8 respectively collects the rotation signals of the travel speed adjustment grip 111 and the rotary tillage speed adjustment handle 112; and the motor control box 8 controls the operation of the travel motor 2 according to the rotation signal of the travel speed adjustment grip 111, and controls the operation of the rotary tillage motor 1 according to the rotation signal of the rotary tillage speed adjustment handle 112. Specifically, during implementation, both the rotary tillage motor 1 and the travel motor 2 are powered by the lithium battery 3.

[0102] Specifically, in the micro-tiller weeder of this embodiment, baffles 4 are also respectively provided on the transmission housing 6 corresponding to the cutter groups on the opposite sides, so as to protect the forward rotation cutter group 5 and the reverse rotation cutter group 7.

[0103] The above are only the preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalent replacements, and improvements made within the spirit and principles of the present invention shall be included within the protection scope of the present invention.

Claims

1. A transmission weeding component, characterized in that: include: The invention relates to a transmission mechanism, two forward-rotating knife groups (5) and two reverse-rotating knife groups (7); the forward-rotating knife groups (5) and the reverse-rotating knife groups (7) are both composed of a plurality of blades mounted on a spiral line; the center lines of the spiral lines where the two forward-rotating knife groups (5) and the two reverse-rotating knife groups (7) are located are collinear, and the two reverse-rotating knife groups (7) are located between the two forward-rotating knife groups (5); the transmission mechanism is used for driving the forward-rotating knife group (5) and the reverse-rotating knife group (7) to rotate in opposite directions; the rotation directions of the spiral lines where the two forward-rotating knife groups (5) are located are opposite, and the rotation directions of the spiral lines where the forward-rotating knife groups (5) and the reverse-rotating knife groups (7) that are close to each other are opposite.

2. The transmission weeding assembly according to claim 1, characterized in that: The transmission mechanism comprises: a left reverse side gear (431), a right reverse side gear (432), a left forward side gear (441), a right forward side gear (442), a left driven gear (451) and a right driven gear (452); The left reverse side gear (431), the left forward side gear (441), the right forward side gear (442) and the right reverse side gear (432) are arranged in sequence, and the central axes of the four are collinear; the left forward side gear (441) and the right forward side gear (442) are respectively used to drive a group of forward rotating knife groups (5) to rotate synchronously, and the left reverse side gear (431) and the right reverse side gear (432) are respectively used to drive a group of reverse knife groups (7) to rotate synchronously; The left driven gear (451) is constantly meshed with the left reverse side gear (431) and the left forward side gear (441), and the right driven gear (452) is constantly meshed with the right reverse side gear (432) and the right forward side gear (442). The left driven gear (451) and the right driven gear (452) rotate in opposite directions.

3. The transmission weeding assembly according to claim 2, characterized in that: The invention also includes a transmission housing (6), and a left forward-rotating side gear (441) and a right forward-rotating side gear (442) are both rotatably mounted on the transmission housing (6); the transmission mechanism also includes: a driving gear (407), an idler gear (408) and a transmission frame plate (409); the transmission frame plate (409) is mounted on the transmission housing (6), and the driving gear (407), the idler gear (408), the left driven gear (451) and the right driven gear (452) are all rotatably mounted on the transmission frame plate (409); the driving gear (407) is connected to an external driving device as a driving member; the driving gear (407) is constantly meshed with the idler gear (408) and the left driven gear (451), respectively, and the right driven gear (452) is constantly meshed with the idler gear (408).

4. The transmission weeding assembly according to claim 3, characterized in that: The transmission mechanism further comprises: a left forward-rotating cutter shaft (411), a right forward-rotating cutter shaft (412), a left reverse-rotating shaft sleeve (421) and a right reverse-rotating shaft sleeve (422); The left forward-rotating cutter shaft (411) is coaxially connected to the left forward-rotating side gear (441), and the right forward-rotating cutter shaft (412) is coaxially connected to the right forward-rotating side gear (442). The two forward-rotating cutter groups (5) are respectively arranged on the left forward-rotating cutter shaft (411) and the right forward-rotating cutter shaft (412), and the left forward-rotating side gear (441) and the right forward-rotating side gear (442) are located between the two forward-rotating cutter groups (5). The left reversing shaft sleeve (421) and the left reversing side gear (431) are both loosely sleeved on the left forward-rotating cutter shaft (411), and the left reversing shaft sleeve (421) and the left reversing side gear (431) are in transmission connection; the right reversing shaft sleeve (422) and the right reversing side gear (432) are both loosely sleeved on the right forward-rotating cutter shaft (412), and the right reversing shaft sleeve (422) and the right reversing side gear (432) are in transmission connection; and the two reversing cutter groups (7) are respectively arranged on the left reversing shaft sleeve (421) and the right reversing shaft sleeve (422).

5. An electric micro-tillage weeder for tea gardens, characterized in that: The invention comprises a transmission weeding assembly as claimed in any one of claims 1 to 4, and further comprises a transmission, wherein the transmission comprises: a transmission housing (28), a speed-changing driving shaft (221) and a speed-changing driven shaft (222), wherein the speed-changing driving shaft (221) and the speed-changing driven shaft (222) are both rotatably mounted on the transmission housing (28), the speed-changing driving shaft (221) is used for externally connecting to a rotary tillage motor (1), and the speed-changing driven shaft (222) is used for providing driving force to the transmission mechanism; The speed-changing driving shaft (221) and the speed-changing driven shaft (222) are connected via a chain and a gear transmission, and the transmission ratio between the speed-changing driving shaft (221) and the speed-changing driven shaft (222) is adjustable.

6. The electric micro-tillage weeder for tea gardens according to claim 5, characterized in that: The transmission further comprises: a gear handle (25), a first gear driving sprocket (211), a first gear driven sprocket (212), a first gear transmission chain (231), a second gear transmission chain (232), a second gear driven sprocket (241), a second gear driving sprocket (242) and a gear shift finger sliding plate (27); The first gear driven sprocket (212) and the second gear driven sprocket (241) are both sleeved on the speed-changing driven shaft (222) and are both transmission-connected to the speed-changing driven shaft (222); the first gear driving sprocket (211) and the second gear driving sprocket (242) are both sleeved on the speed-changing driving shaft (221); the shift finger sliding plate (27) is slidably arranged on the speed-changing driving shaft (221) and is spline-connected to the speed-changing driving shaft (221); the first gear driving sprocket (211) and the second gear driving sprocket (242) are transmission-connected to the speed-changing driving shaft (221) via the shift finger sliding plates (27) at different positions; The first gear driven sprocket (212) and the first gear driving sprocket (211) are connected by a first gear transmission chain (231), and the second gear driven sprocket (241) and the second gear driving sprocket (242) are connected by a second gear transmission chain (232); the gear handle (25) is connected to the gear shift finger pin sliding plate (27) for adjusting its position.

7. The electric micro-tillage weeder for tea gardens according to claim 6, characterized in that: The transmission housing (28) is provided with chain tensioning devices corresponding to the first gear transmission chain (231) and the second gear transmission chain (232), respectively; the chain tensioning devices include: a support (507), a tensioning seat (508), a tensioning wheel (509), a pin (502), a tension spring (504) and a tensioning screw (505); The support (507) is mounted on the transmission housing (28), and the tensioning seat (508) is slidably arranged on the support (507); one end of the tensioning screw (505) passes through the support (507) and is connected to the tensioning seat (508) through a tension spring (504), and the other end extends out of the transmission housing (28); a nut (506) matching the tensioning screw (505) is provided on the outside of the transmission housing (28); the forward and backward directions of the tensioning screw (505) and the expansion and contraction direction of the tension spring (504) are both the same as the sliding direction of the tensioning seat (508) on the support (507); The tensioning wheel (509) is rotatably mounted on the tensioning seat (508), and the first gear transmission chain (231) and the second gear transmission chain (232) are respectively wound around the corresponding tensioning wheels (509).

8. The electric micro-tillage weeder for tea gardens according to claim 7, characterized in that: The transmission further comprises: a shift fork (602); a guide rail (601) is provided on the transmission housing (28), and a slider (603) is slidably provided on the guide rail (601); one end of the shift fork (602) is connected to the shift finger pin sliding plate (27), and the other end is connected to the slider (603); the gear handle (25) is used to drive the shift fork (602) to slide along the guide rail (601), and the shift finger pin sliding plate (27) follows the shift fork (602) to slide axially along the speed change driving shaft (221); The bottom of the guide rail (601) is provided with a countersink, a compression spring (606) is provided in the countersink, and a positioning ball (605) is provided on the top of the compression spring (606); the slider (603) is provided with a plurality of hemispherical grooves (604) matching the positioning balls (605).

9. The electric micro-tillage weeder for tea gardens according to claim 5, characterized in that: It also includes a travel transmission assembly and a handrail assembly; The travel transmission assembly comprises: a travel output shaft (304), a travel driving shaft (302), a left tooth clutch, a right tooth clutch, a left wheel (311), and a right wheel (312); the travel driving shaft (302) is connected to the left wheel (311) through the left tooth clutch, and the travel driving shaft (302) is connected to the right wheel (312) through the right tooth clutch; the travel output shaft (304) is driven by a travel motor (2), and the travel output shaft (304) is connected to the travel driving shaft (302) through a transmission chain (303); The handrail assembly comprises: a left steering line (131), a right steering line (132), a left steering handbrake (121) and a right steering handbrake (122); the left steering handbrake (121) is connected to a left tooth clutch via the left steering line (131) to control the engagement of the left tooth clutch, and the right steering handbrake (122) is connected to a right tooth clutch via the right steering line (132) to control the engagement of the right tooth clutch; The handrail assembly further includes: a handrail (14); the handrail (14) is mounted on the transmission housing (6) via a telescopic rod, and the height of the handrail (14) can be adjusted by telescoping the telescopic rod; A travel speed adjustment handle (111) and a rotary tillage speed adjustment handle (112) that are easy to hold are provided on the handrail frame (14); a left steering hand brake (121) and a right steering hand brake (122) are respectively provided on the travel speed adjustment handle (111) and the rotary tillage speed adjustment handle (112).

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