Novel mini-tiller

Abstract

The utility model provides a novel mini-tiller which comprises a connecting shaft, a machine head part, a front wheel, a connecting plate, a connecting column, a gearbox, a transmission mechanism and a rear wheel. The mini-tiller is provided with the front wheel and the rear wheel, so that the working quality of the mini-tiller on hard soil or soft soil which is easy to sink is ensured; meanwhile, due to the installation of the rear wheels, the advancing speed of the front mini-tiller can be stabilized by pushing or pulling force in the using process of the mini-tiller, at the moment, the advancing speed does not need to be controlled manually, the physical strength of operators is saved to a great extent, and the comfort of the operators is improved.

Description

Technical Field

[0001] This utility model relates to the field of micro-tiller equipment technology, specifically to a new type of micro-tiller. Background Technology

[0002] Existing mini-tillers generally operate using only the front wheels. This type of mini-tiller is difficult to work on hard soil or soft ground that is prone to sinking. In addition, it also requires physical strength from the operator, as it is necessary to control the mini-tiller to move forward at a constant speed by pushing or pulling for a long time. Under the above soil conditions, the physical strength required to use a two-wheel drive mini-tiller is high, making it impossible to work continuously for a long time, which makes the operator feel extremely uncomfortable. Utility Model Content

[0003] The purpose of this utility model is to design a novel micro-tiller to solve the problems raised in the background art. To achieve the above objective, this utility model provides the following technical solution: a head unit with a front wheel and a drive shaft, a connecting plate mounted on the rear end of the head unit, a connecting column hinged to the connecting plate, a gearbox fixed to the connecting column, and a rear wheel connected to the output end of the gearbox via a transmission mechanism; the input end of the gearbox is connected to the output shaft of the head unit via the drive shaft, and the drive shaft passes through the connecting column.

[0004] Furthermore, the head of the machine is also provided with a steering mechanism for driving the connecting column to rotate, and the output shaft of the steering mechanism is connected to the connecting column through a linkage mechanism.

[0005] Furthermore, the linkage mechanism includes a rotating handle fixed to the output end of the steering gear, a movable rod connected to the rotating handle via a first universal ball joint, a vertical rod connected to the movable rod via a second universal ball joint, and a drive plate fixed to the vertical rod, the drive plate being fixed to the connecting column.

[0006] Furthermore, the transmission mechanism includes two first booster boxes connected to the output end of the gearbox via a transmission assembly. The rear wheel is fixedly connected to the output end of the first booster box, and a support rod is fixedly connected to the bottom of the gearbox. The two first booster boxes are fixedly connected to the support rod and are symmetrically distributed relative to the gearbox.

[0007] Alternatively, the transmission mechanism may include a second booster box connected to the output end of the gearbox, the output end of which is fixedly connected to two of the rear wheels.

[0008] Furthermore, the transmission mechanism also includes a clutch, which is installed in any of the following locations: inside the gearbox, between the gearbox and the transmission assembly, inside the first booster box, and between the first booster box and the transmission assembly;

[0009] Alternatively, the transmission mechanism may further include a braking assembly located between the gearbox and the transmission assembly or between the first booster box and the transmission assembly;

[0010] Alternatively, the transmission assembly is a belt drive, and the first heightening box is provided with a tensioning mechanism for adjusting the tension of the belt in the belt drive;

[0011] Alternatively, the transmission mechanism may further include a gear separation mechanism, which may be installed in any of the following locations: inside the gearbox, between the gearbox and the transmission assembly, inside the first booster box, and between the first booster box and the transmission assembly.

[0012] Furthermore, the steering gear's rotating rod is fixedly connected to two coiled cables. One end of each cable is connected to the disengagement end and braking end of one of the following: the clutch, the tensioning mechanism, the gear disengagement mechanism, and the brake assembly. When the steering gear drives the connecting column to its limit angle, the cables pull the braking end or the disengagement end to its limit position, thereby causing one of the following to actuate: the clutch, the tensioning mechanism, the gear disengagement mechanism, and the brake assembly.

[0013] Furthermore, the gearbox is equipped with a differential, and a braking device is provided between the two output ends of the differential and the second booster box.

[0014] Furthermore, the transmission gear in the gearbox and the transmission gear in the second booster box are located inside the same housing or are located independently in two separate housings.

[0015] Furthermore, the transmission gear in the gearbox is located inside the same housing as the transmission gear in the two first height-increasing housings, or they are located independently in the three housings.

[0016] Furthermore, the first or second booster box is equipped with a worm gear mechanism inside, and the output end of the worm gear is close to the rear wheel.

[0017] Compared with the prior art, the beneficial effects of this utility model are as follows: This utility model is equipped with front wheels and rear wheels, which ensures the working quality of the mini tiller on hard soil or soft soil that is prone to sinking; at the same time, due to the installation of the rear wheels, the mini tiller will have a pushing or pulling force during use to stabilize the forward speed of the mini tiller. At this time, it is less necessary to manually control the forward speed, which greatly saves the physical strength of the operator and increases the comfort of the operator. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the overall structure of one embodiment;

[0020] Figure 2 for Figure 1 Another perspective structural diagram in the embodiment;

[0021] Figure 3 This is a schematic diagram of the overall structure in another embodiment.

[0022] The components are as follows: 1. Rotating handle; 2. Engine head; 3. Connecting plate; 4. Mudguard; 5. Drive shaft; 6. Drive plate; 7. Rear wheel; 8. Seat; 9. First booster box; 10. Second booster box; 11. Handle; 12. Connecting column; 13. Connecting frame; 14. Steering gear; 15. Rotating lever; 16. Moving lever; 17. Clutch handle; 18. Belt drive; 19. Support rod; 20. Gearbox; 21. Rear power take-off shaft; 22. Linkage mechanism; 23. Angle adjustment mechanism; 24. Front wheel. Detailed Implementation

[0023] To further illustrate the technical means and effects adopted by this utility model in order to achieve the intended utility model purpose, the following detailed description of the specific implementation methods, structure, features and effects of this utility model is provided in conjunction with the accompanying drawings and preferred embodiments.

[0024] Example: Please refer to Figure 1-3A novel mini-tiller includes a head unit 2 with a front wheel 24 and a drive shaft 5, a connecting plate 3 mounted on the rear end of the head unit 2, a connecting column 12 hinged to the connecting plate 3, a gearbox 20 fixed to the connecting column 12, and a rear wheel 7 connected to the output end of the gearbox 20 via a transmission mechanism. The input end of the gearbox 20 is connected to the output shaft of the head unit 2 via the drive shaft 5, which passes through the connecting column 12. Two hinge points are provided between the connecting column 12 and the connecting plate 3 to ensure a stable connection between the head unit 2 and the connecting column 12. The drive shaft 5 can be a flexible or rigid shaft to transmit power to the gearbox 20. The rear wheel 7 can be a spiked wheel, a tire, or a smooth anti-sinking wheel (the appropriate rear wheel 7 can be used depending on the working scenario), facilitating the mini-tiller's work on hard soil or soft or sandy soil prone to sinking. This invention, with its front wheel 24 and rear wheel 7, ensures the working quality of the mini-tiller on hard soil or soft soil prone to sinking while increasing operator comfort.

[0025] In this embodiment, the head unit 2 is also provided with a steering mechanism 14 for driving the connecting column 12 to rotate. The output shaft of the steering mechanism 14 is connected to the connecting column 12 through a linkage mechanism 22. The steering mechanism 14 can be a common steering mechanism 14 with a steering wheel, such as a steering wheel driving a first rotating component, the first rotating component meshing with a second rotating component, and the rotation axes of the first rotating component and the second rotating component being perpendicular. The rotation axis of the second rotating component is the output shaft of the steering mechanism 14. The linkage mechanism 22 includes a rotating handle 1 fixed to the output end of the steering mechanism 14, a moving rod 16 connected to the rotating handle 1 through a first universal ball joint, and a moving rod 16 connected to the rotating handle 1 through a second universal ball joint. The vertical rod connecting the ball and the moving rod 16 and the drive plate 6 fixed to the vertical rod are connected to the connecting column 12. Therefore, when the output shaft of the steering gear 14 rotates, the rotating handle 1 rotates, thereby pulling the moving rod 16 to rotate, which in turn causes the connecting column 12 to rotate around the hinge, thus realizing the turning and turning of the micro-tiller; the transmission mechanism includes two first lifting boxes 9 connected to the output end of the gearbox 20 through a transmission assembly. The output end of the first lifting box 9 is fixedly connected to the rear wheel 7. The bottom of the gearbox 20 is fixedly connected to the support rod 19. The two first lifting boxes 9 are fixedly connected to the support rod 19 and are symmetrically distributed relative to the gearbox 20; wherein, the first The first height-increasing box 9 is a gearbox. The height of the rear wheel 7's axle can be adjusted by adjusting the overall height of the first height-increasing box 9 or the height of its output end. Simultaneously, the first height-increasing box 9 can increase the transmission ratio or enrich the gears for the rear wheel 7's rotation. In this embodiment, the transmission component is a belt drive 18. The first height-increasing box 9 is equipped with a tensioning mechanism for adjusting the tension of the belt in the belt drive 18. The tensioning mechanism adopts a common adjustable tensioning wheel structure, which will not be elaborated further here. During the operation of the micro-tiller, when the turning or turning position is insufficient, i.e., the turning angle provided by the environment is small (the steering gear 14 cannot achieve turning or...), (When turning around), the tension wheel on one side can be adjusted to cause slippage, thereby creating a speed difference between the two rear wheels 7. This allows the tiller to turn around even when the turning position is insufficient. In addition, the gearbox 20 is equipped with multiple rear power output shafts 21. These output shafts can be located on both sides of the gearbox 20 or on the side of the gearbox 20 away from the head 2, thereby providing power for the expansion of rear functional implements (such as mounting a rear rotary tiller, ditching and ridging machine, spraying and fertilizing implements, etc.). Furthermore, mudguards 4 are also provided on the head 2 and gearbox 20 to prevent soil from splashing.

[0026] In this embodiment, the transmission mechanism also includes a clutch, which is installed in any of the following locations: inside the gearbox 20, between the gearbox 20 and the transmission assembly, inside the first lift box 9, and between the first lift box 9 and the transmission assembly. The clutch itself can be a common clutch, which will not be described in detail here. Similar to the belt drive 18 described above, when the tiller is in motion and there is insufficient space for turning or turning, one of the rear wheels 7 can be disconnected by the clutch. At this time, the power of the gearbox 20 will be transferred to the other rear wheel 7, thereby achieving a speed difference between the two rear wheels 7, and thus enabling the tiller to turn even when there is insufficient space for turning or turning. The clutch can be used for turning or steering; in other embodiments, the clutch can be replaced by a gear disengagement mechanism (the gear disengagement mechanism can be inferred from the process of gear shifting, or it can be similar to the disengagement technology of existing tracked gearboxes, where the clutch plates are used for braking after the gears are disengaged, which will not be elaborated further here); the gear disengagement mechanism can be installed in any of the following locations: inside the gearbox 20, between the gearbox 20 and the transmission assembly, inside the first lift box 9, and between the first lift box 9 and the transmission assembly, and its effect is the same as that of the clutch; in addition, the clutch can also be replaced by a brake assembly, when the clutch is replaced by a brake assembly, the brake assembly is located between the gearbox 20 and the transmission assembly or the first lift box 9. Between the gearbox 9 and the transmission assembly, the braking assembly uses a common braking structure, such as brake pads, which will not be elaborated on here. Its function is the same: to create a speed difference between the two rear wheels 7, so that the tiller can still turn or make a U-turn or turn even when the turning position is insufficient. In addition, when the braking assembly is used, the gearbox 20 is equipped with a differential. The rotary lever 15 of the steering gear 14 is fixedly connected to a coiled cable. One end of the two cables is connected to the disengagement end and the braking end of one of the following: the clutch, the tensioning mechanism, the gear disengagement mechanism, and the braking assembly. When the steering gear 14 drives the connecting column 12 to the limit angle, the cable pulls the braking end or the disengagement end to the limit position, thereby engaging or disengaging the clutch. One of the following components—the clutch, tensioning mechanism, gear disengagement mechanism, and brake assembly—acts: When the rotating rod 15 rotates in one direction, one cable continues to wind around the rotating rod 15, while the other cable begins to unwind from the rotating rod 15. When the rotating rod 15 reaches its limit in one direction, the cable continuing to wind around the rotating rod 15 activates the disengagement end of one of the connected components—the clutch, tensioning mechanism, gear disengagement mechanism, and brake assembly—causing the clutch to disengage, the tensioning mechanism to loosen the belt, the gear disengagement mechanism to disengage, and the brake assembly to engage. This stops or decelerates the rear wheel 7 at that point, creating a speed difference between the two rear wheels 7, thus enabling turning and U-turns.

[0027] In this embodiment, the rotation shaft of the steering gear 14 can be connected to the output end of a motor through a corresponding connection structure. The motor can be remotely controlled; by controlling the motor's speed and direction of rotation, the tiller can be controlled to turn left or right or make a U-turn. Remote control maximizes user safety in hazardous environments. Furthermore, the cable in the previous embodiment can also be controlled. When the hinge between the connecting post 12 and the machine head 2 is locked, the locking structure can directly use diagonal rods to fix the machine head 2 and the connecting post 12 respectively. At this time, two motors or two electric push rods are respectively connected to the cables controlling the left and right rear wheels 7. By controlling the two cables, the clutches, tensioning mechanisms, or gears on both sides can be controlled. A change in the state of one of the mechanisms or braking components allows the left and right rear wheels 7 to turn due to the speed difference. Furthermore, the transmission gears in the gearbox 20 and the transmission gears in the two first booster boxes 9 are located in the same housing or are located independently in three housings. When the gearbox 20 and the first booster box 9 are integrated, it facilitates structural compactness. In this case, the two speed differences of the rear wheels can be achieved by installing a differential in the housing after integration, in conjunction with the braking mechanism. When separated, it facilitates the maintenance and repair of the gearbox 20 and the first booster box 9. The first booster box 9 has a worm gear mechanism inside, with the output end of the worm gear close to the rear wheel 7. This prevents the rear wheel 7 from rotating in the opposite direction after the power transmission is disconnected, thus achieving a self-locking effect on the rear wheel 7.

[0028] In other embodiments, the two first booster boxes 9 can also be driven directly by motors. By adjusting the speed of the two motors, the speed change and speed difference of the two rear wheels 7 can be achieved.

[0029] In other embodiments, the transmission mechanism includes a second booster box 10 connected to the output end of the gearbox 20. Two rear wheels 7 are fixedly connected to the output end of the second booster box 10, thus enabling the rotation of the rear wheels. The gearbox 20 contains a differential, and a braking device is provided between the two output ends of the differential and the second booster box 10. The differential is a conventional differential, and the braking device is a braking device that cooperates with the corresponding differential; further details are omitted here. This design enables speed difference between the two rear wheels 7, thereby enabling the tiller to turn. The transmission gears in the gearbox 20 and the second booster box 10 are located in the same housing or are located independently in two housings. When the gearbox 20 and the second booster box 10 are integrated, it facilitates structural compactness; when separated, it facilitates maintenance of both the gearbox 20 and the second booster box 10. The second booster box 10 contains a worm gear mechanism, with the output end of the worm gear close to the rear wheels 7. This prevents the rear wheels 7 from rotating in the opposite direction after power transmission is disconnected, thus achieving a self-locking effect on the rear wheels 7.

[0030] In other embodiments, a connecting frame 13 is also provided on the head unit 2. A handle 11 is mounted on the end of the connecting frame 13 via an angle adjustment mechanism 23. A clutch handle 17 is mounted on the handle 11 via a clamp. When remote control is not required or when riding is not required, the direction of the tiller can be controlled directly by controlling the handle 11. Turning the handle 11 causes the head unit 2 to rotate, thus enabling the tiller to turn and turn around. During the rotation of the handle 11, the steering mechanism 14 also rotates synchronously. Therefore, the design of the handle 11 enriches the operation methods of the tiller. The angle adjustment mechanism 23 can be a common angle adjustment mechanism, such as... The connection structure between the handle 11 and the head 2 in the original two-wheel drive mini-tiller will not be described in detail here. The angle adjustment mechanism 23 can accommodate different users and facilitate the storage of the handle 11. The top of the connecting frame 13 is fixed with a seat 8, which is located between the handle 11 and the head 2, allowing the operator to sit while tilling, reducing the operator's labor intensity. In addition, the position of the seat 8 can be adjusted according to customer needs, and it can be installed forward or backward without much restriction. For example, it can be installed on the support rod 19 to increase the sinking degree of the rear wheel 7, thereby improving the tilling quality of the mini-tiller.

[0031] Working principle: This utility model is equipped with front wheels and rear wheels, which ensures the working quality of the mini tiller on hard soil or soft soil that is prone to sinking; at the same time, due to the installation of the rear wheels, the mini tiller will have a pushing or pulling force during use to stabilize the forward speed of the mini tiller. At this time, it is less necessary to manually control the forward speed, which greatly saves the operator's physical strength and increases the operator's comfort.

[0032] It should be noted that when a component is said to be "fixed to" another component, it can be directly attached to the other component or there may be an intervening component. When a component is said to be "connected to" another component, it can be directly connected to the other component or there may be an intervening component. The terms "upper," "lower," "left," "right," "front," "back," and similar expressions used in this document are for illustrative purposes only.

[0033] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with reference to a preferred embodiment, it is not intended to limit the present utility model. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present utility model. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present utility model without departing from the scope of the present utility model shall still fall within the scope of the present utility model.

Claims

1. A new type of mini-tiller comprising a head portion (2) provided with front wheels (24) and a transmission shaft (5), characterized in that: The connecting plate (3) is installed at the rear end of the head part (2), the connecting column (12) is hinged to the connecting plate (3), the gearbox (20) is fixed to the connecting column (12), and the rear wheel (7) is connected to the output end of the gearbox (20) through a transmission mechanism; the input end of the gearbox (20) is connected to the output shaft of the head part (2) through a transmission shaft (5), and the transmission shaft (5) penetrates the connecting column (12).

2. The novel mini-tiller as claimed in claim 1, wherein: The head part (2) is further provided with a direction machine (14) for driving the connecting column (12) to rotate, and the output shaft of the direction machine (14) is connected to the connecting column (12) through a connecting rod mechanism (22).

3. The novel mini-tiller as claimed in claim 2, wherein: The connecting rod mechanism (22) comprises a rotating handle (1) fixed to the output end of the direction machine (14), a moving rod (16) connected to the rotating handle (1) through a first universal ball, a vertical rod connected to the moving rod (16) through a second universal ball, and a driving plate (6) fixed to the vertical rod, wherein the driving plate (6) is fixed to the connecting column (12).

4. The new mini-tiller as claimed in claim 2, wherein: The transmission mechanism comprises two first heightening boxes (9) connected to the output end of the gearbox (20) through a transmission assembly, the output end of the first heightening box (9) is fixed with the rear wheel (7), the bottom of the gearbox (20) is fixed with a supporting rod (19), and the two first heightening boxes (9) are fixed to the supporting rod (19) and symmetrically distributed relative to the gearbox (20). Alternatively, the transmission mechanism comprises one second heightening box (10) connected to the output end of the gearbox (20), and the output end of the second heightening box (10) is fixed with two rear wheels (7).

5. The novel mini-tiller as claimed in claim 4, wherein: The transmission mechanism further comprises a clutch installed in any one of the following positions: inside the gearbox (20), between the gearbox (20) and the transmission assembly, inside the first heightening box (9), and between the first heightening box (9) and the transmission assembly. Alternatively, the transmission mechanism further comprises a brake assembly located between the gearbox (20) and the transmission assembly or between the first heightening box (9) and the transmission assembly. Alternatively, the transmission assembly is a belt transmission (18), and the first heightening box (9) is provided with a tensioning mechanism for adjusting the tightness of the belt in the belt transmission (18). Alternatively, the transmission mechanism further comprises a gear separation mechanism installed in any one of the following positions: inside the gearbox (20), between the gearbox (20) and the transmission assembly, inside the first heightening box (9), and between the first heightening box (9) and the transmission assembly.

6. The novel mini-tiller as claimed in claim 5, wherein: The rotating rod (15) of the steering machine (14) is fixed with two coiled pull lines, one end of the two pull lines is connected with the separation end and the brake end of one of the clutch, the tensioning mechanism, the gear separation mechanism and the brake assembly, when the steering machine (14) drives the connecting column (12) to the limit angle, the pull line pulls the brake end or the separation end to the limit position, so that one of the clutch, the tensioning mechanism, the gear separation mechanism and the brake assembly is actuated.

7. The novel mini-tiller as claimed in claim 4, wherein: The inside of the gearbox (20) is provided with a differential, and the two output ends of the differential are provided with brake devices between the second heightening box (10).

8. The novel mini-tiller as claimed in claim 7, wherein: The transmission gears in the gearbox (20) and the transmission gears in the second heightening box (10) are located in the same box or are independent of the two boxes.

9. The novel mini-tiller as claimed in claim 7, wherein: The transmission gears in the gearbox (20) and the transmission gears in the two first heightening boxes (9) are located in the same box or are independent of the three boxes.

10. The novel mini-tiller as claimed in claim 4, wherein: The inside of the first heightening box (9) or the second heightening box (10) is provided with a worm and gear mechanism, and the output end of the worm is close to the rear wheel (7).

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