A rideable paddy field ditcher with adjustable auxiliary wheels

Abstract

This utility model provides a rideable paddy field ditching machine with adjustable auxiliary wheels, including a frame, a front wheel, and two auxiliary wheels. The front wheel is mounted on the front end of the frame via a reducer, and the two auxiliary wheels are mounted on both sides of the rear end of the frame. A lifting mechanism for raising and lowering the auxiliary wheels is also installed at the rear end of the frame. The lifting mechanism includes a gearbox, a pair of linkage groups, a pair of shock absorbers, and a lifting assembly. The gearbox is fixedly mounted on the rear end of the frame and located above the auxiliary wheels. The pair of linkage groups are mounted on the gearbox and located on both sides of the frame. One end of the shock absorber is connected to the linkage group on the same side, and the other end of the shock absorber is connected to the auxiliary wheel on the same side. The connecting end of the auxiliary wheel is connected to the linkage group on the same side. The lifting assembly is connected to one of the linkage groups. In this utility model, rotating the lifting handle releases the upper and lower locking rods from locking the gear linkage, and then rotating the gear linkage with the lifting handle releases the self-locking, thereby raising the auxiliary wheels.

Description

Technical Field

[0001] This utility model belongs to the technical field of agricultural machinery, and in particular relates to a ride-on paddy field ditching machine with adjustable auxiliary wheels. Background Technology

[0002] Ditching is a crucial step in rice cultivation. A well-maintained ditch system effectively regulates field moisture, improves soil aeration, and promotes rice growth. Traditional manual ditching is inefficient and labor-intensive. While existing ride-on ditching machines have improved efficiency, they still present the following problems: ① Insufficient stability: Most existing ditching machines use a single-wheel support structure, which is prone to tilting in soft paddy fields, affecting operational safety. ② Difficulty in moving the machine on hard surfaces: The front wheels are usually metal paddy field wheels, which experience severe bumps when traveling on hard surfaces and lack auxiliary support devices, hindering machine movement. ③ Inconvenient adjustment of auxiliary wheels: Although some improved models have added auxiliary wheels, most use a fixed structure, which cannot be flexibly raised and lowered according to operational needs. This can cause the auxiliary wheels to interfere with the soil during ditching, affecting the quality of the ditch shape.

[0003] To address the aforementioned issues, some improvements have been made in the existing technology, such as adding fixed auxiliary wheels or using a hydraulic lifting mechanism. However, these solutions still have drawbacks such as complex structure, inconvenient operation, or high cost. Utility Model Content

[0004] The main purpose of this utility model is to provide a rideable paddy field ditching machine with adjustable auxiliary wheels, addressing the shortcomings of existing technologies.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] A rideable paddy field ditcher with adjustable auxiliary wheels includes a frame, a front wheel, and two auxiliary wheels. The front wheel is mounted on the front end of the frame via a reducer. The two auxiliary wheels are mounted on both sides of the rear end of the frame. A lifting mechanism for raising and lowering the auxiliary wheels is also installed at the rear end of the frame. The lifting mechanism includes a gearbox, a pair of linkage groups, a pair of shock absorbers, and a lifting assembly. The gearbox is fixedly mounted on the rear end of the frame and located above the auxiliary wheels. The pair of linkage groups are mounted on the gearbox and located on both sides of the frame. One end of each shock absorber is connected to the linkage group on the same side, and the other end of each shock absorber is connected to the auxiliary wheel on the same side. The connecting end of each auxiliary wheel is connected to the linkage group on the same side. The lifting assembly is connected to one of the linkage groups.

[0007] Preferably, the linkage assembly includes a gear linkage, a long linkage, a first fork arm, a second fork arm, and a wheel frame. The gear linkage is installed in the gearbox and the two gear linkages mesh with each other. The end of the gear linkage is connected to the long linkage, and the bottom end of the long linkage is connected to the wheel frame. The upper and lower ends of the wheel frame are movably connected to the first fork arm and the second fork arm, respectively. The other ends of the first fork arm and the second fork arm are movably connected to the frame.

[0008] Preferably, the first fork arm and the second fork arm are arranged in parallel at the upper and lower ends of the wheel frame.

[0009] Preferably, the lifting assembly includes an upper locking rod, a lower locking rod, and a lifting handle. The upper locking rod is mounted on the frame in sequence via an extension arm and a bracket. The other end of the upper locking rod is rotatably connected to the lower locking rod. The lifting handle passes through the gear connecting rod, the long connecting rod, and the lower locking rod. The lifting handle is keyed to the lower locking rod so that rotating the lifting handle can drive the lower locking rod to rotate synchronously.

[0010] Preferably, a keyway is provided at one end of the lower locking rod that is connected to the lifting handle, and a flat key adapted to the keyway is installed at the other end of the lifting handle that is connected to the lower locking rod.

[0011] Preferably, upper limit blocks are fixedly installed on both sides of the upper locking rod, and lower limit blocks are fixedly installed on both sides of the lower locking rod. The upper limit block and the lower limit block on the same side are connected by a tension spring. The tension spring on the same side, in cooperation with the upper limit block and the lower limit block, can keep the upper locking rod and the lower locking rod collinear.

[0012] Preferably, one end of the shock absorber is connected to the wheel frame on the same side, and the other end of the shock absorber is connected to the auxiliary wheel on the same side. The auxiliary wheel is connected to the wheel frame on the same side, so that the shock absorber, the auxiliary wheel and the wheel frame on the same side are connected to each other in pairs to form a triangular shape.

[0013] Preferably, a spare tire rack is also fixedly installed on the frame.

[0014] Preferably, the reducer is installed at the front end of the frame, and the front wheel is connected to the output shaft of the reducer via a spline and fixed to the reducer by a washer and a nut.

[0015] Preferably, a support leg is installed at the front end of the frame, and the support leg is located in front of the front wheel.

[0016] Compared with the prior art, the present invention will have at least the following beneficial effects:

[0017] In this invention, the upper and lower locking rods are unlocked by rotating the lifting handle, and the gear connecting rod is then unlocked by rotating the lifting handle, thereby lifting the auxiliary wheel. In other words, the dead point characteristic of the connecting rod group is used to achieve the self-locking of the auxiliary wheel in the raised or lowered state. Unlocking can be achieved by simply rotating the lifting handle, and the auxiliary wheel can be lowered manually. The structure is stable and reliable, and the operation is simple.

[0018] The front wheel is connected to the output shaft of the reducer via a spline and is fixed to the reducer via washers and nuts, allowing for quick replacement of the front wheel.

[0019] The auxiliary wheels can be raised or lowered via a linkage assembly. When lowered, they facilitate driving on the road surface, while when raised, they do not interfere with the trenching operation. The auxiliary wheels are equipped with shock absorbers to ensure smooth driving, reduce impact on the trencher, and extend its service life. Attached Figure Description

[0020] 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 will be briefly introduced below. Obviously, the drawings described below are merely exemplary embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort, wherein:

[0021] Figure 1 This is a structural schematic diagram of a ride-on paddy field ditching machine with adjustable auxiliary wheels according to the present invention (also a diagram showing the state when the auxiliary wheels are lowered);

[0022] Figure 2 for Figure 1 Enlarged view of point A in the image;

[0023] Figure 3 This is a partially exploded schematic diagram of a ride-on paddy field ditching machine with adjustable auxiliary wheels according to the present invention.

[0024] Figure 4 for Figure 3 Partial structural diagram;

[0025] Figure 5 This is a front sectional view of a rideable paddy field ditching machine with adjustable auxiliary wheels according to this utility model.

[0026] Figure 6 for Figure 5 Enlarged view of point B in the image;

[0027] Figure 7 This is a right view of a ride-on paddy field ditching machine with adjustable auxiliary wheels according to the present invention.

[0028] Figure 8 This is a partially exploded view of the front end of the frame of a ride-on paddy field ditching machine with adjustable auxiliary wheels according to the present invention.

[0029] Figure 9 This is a diagram showing the state of the auxiliary wheel in a ride-on paddy field ditching machine with adjustable auxiliary wheel height according to this utility model, when the auxiliary wheel is raised.

[0030] The reference numerals in the figures include:

[0031] 1. Frame; 2. Front wheel; 3. Auxiliary wheel; 4. Reducer; 5. Gearbox; 6. Linkage assembly; 600. Gear connecting rod; 601. Long connecting rod; 602. First fork arm; 603. Second fork arm; 604. Wheel frame; 7. Shock absorber; 8. Lifting assembly; 800. Upper locking rod; 801. Lower locking rod; 802. Lifting handle; 9. Extension arm; 10. Bracket; 11. Keyway; 12. Flat key; 13. Upper limit block; 14. Lower limit block; 15. Tension spring; 16. Spare tire holder; 17. Spline; 18. Washer; 19. Nut; 20. Support leg. Detailed Implementation

[0032] The technical solutions in the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are merely exemplary embodiments of this utility model, and not the only embodiments.

[0033] like Figures 1 to 9 As shown, a rideable paddy field ditcher with adjustable auxiliary wheels includes a frame 1, a front wheel 2, and two auxiliary wheels 3. The front wheel 2 is mounted on the front end of the frame 1 via a reducer 4. Specifically, the reducer 4 is mounted on the front side of the frame 1, and the front wheel 2 is connected to the output shaft of the reducer 4 via a spline 17 and is fixedly connected to the reducer 4 via a washer 18 and a nut 19, which allows for quick replacement of the front wheel 2. Understandably, when ditching in paddy fields, the front wheel 2 is a paddy field wheel, which achieves the purpose of ditching in paddy fields. When the ditcher is not needed for paddy field work, the paddy field wheel can be replaced with a tire that can travel on the road, such as a rubber wheel.

[0034] Two auxiliary wheels 3 are installed on both sides of the rear end of the frame 1. The rear end of the frame 1 is also equipped with a lifting mechanism for raising and lowering the auxiliary wheels 3. The lifting mechanism can raise and lower the auxiliary wheels 3 on both sides of the rear end of the frame 1. That is, when the ditcher needs to dig ditches in the paddy field, the lifting mechanism will raise the auxiliary wheels 3 without affecting the ditching operation of the ditcher. When the ditcher needs to travel on the ground, the lifting mechanism will lower the auxiliary wheels 3. At this time, the auxiliary wheels 3 are used as a tool to assist the ditcher in traveling.

[0035] Specifically, the lifting mechanism includes a gearbox 5, a pair of connecting rod groups 6, a pair of shock absorbers 7, and a lifting assembly 8. The gearbox 5 is fixedly installed at the rear end of the frame 1 and located above the auxiliary wheel 3. The pair of connecting rod groups 6 are installed on the gearbox 5 and located on both sides of the frame 1. One end of the shock absorber 7 is connected to the connecting rod group 6 on the same side, and the other end of the shock absorber 7 is connected to the auxiliary wheel 3 on the same side. The connecting end of the auxiliary wheel 3 is connected to the connecting rod group 6 on the same side. The connection between the shock absorber 7 and the auxiliary wheel 3 can reduce the vibration of the auxiliary wheel 3 during the operation of the trencher, ensuring smooth operation of the trencher, reducing the impact on the trencher, and extending its service life. The lifting assembly 8 is connected to one of the connecting rod groups 6. The lifting assembly 8 is used to lift the connecting rod group 6 and simultaneously drive the lifting and lowering of the auxiliary wheel 3. The lifting assembly 8 only needs to be connected to one of the connecting rod groups 6, not every connecting rod group 6. This allows for better final control of the lifting assembly 8 in lifting and lowering the auxiliary wheel 3.

[0036] The linkage assembly 6 includes a gear linkage 600, a long linkage 601, a first fork arm 602, a second fork arm 603, and a wheel carrier 604. The gear linkage 600 is installed in the gearbox 5, and the two gear linkages 600 mesh with each other, improving the transmission efficiency of the gear linkage 600. The end of the gear linkage 600 is connected to the long linkage 601, and the bottom end of the long linkage 601 is connected to the wheel carrier 604. The upper and lower ends of the wheel carrier 604 are movably connected to the first fork arm 602 and the second fork arm 603, respectively. The first fork arm 602 and the second fork arm 603 are arranged parallel to each other at the upper and lower ends of the wheel carrier 604. The other ends of the first fork 602 and the second fork 603 are movably connected to the frame 1. When the auxiliary wheel 3 needs to be raised or lowered, the first fork 602 and the second fork 603 can provide guidance for the rotation of the long connecting rod 601. Moreover, the rear ends of the frame 1 are provided with connecting rod groups 6 on both sides. That is, the rear ends of the frame 1 include gear connecting rods 600, long connecting rods 601, first fork 602, second fork 603 and wheel frame 604. When the long connecting rods 601 on both sides of the rear ends of the frame 1 are raised or lowered at the same time, the first fork 602 and the second fork 603 on both sides can also provide balance for their raising and lowering operations, ensuring that the rear ends of the frame 1 are balanced.

[0037] The lifting assembly 8 includes an upper locking rod 800, a lower locking rod 801, and a lifting handle 802. The upper locking rod 800 is mounted on the frame 1 via an extension arm 9 and a bracket 10. One end of the upper locking rod 800 is fixed to the frame 1, and the other end is rotatably connected to the lower locking rod 801. The lifting handle 802 passes through a gear connecting rod 600, a long connecting rod 601, and the lower locking rod 801. Thus, with the lifting handle 802 as an axis, after passing through the gear connecting rod 600 and the long connecting rod 601, the gear connecting rod 600 and the long connecting rod 601 form a hinged connection. The lifting handle 802 is connected to the lower locking rod... The 801 key connection enables the rotation of the lifting handle 802 to drive the lower locking rod 801 to rotate synchronously. Specifically, the end of the lower locking rod 801 connected to the lifting handle 802 is provided with a keyway 11, and the end of the lifting handle 802 connected to the lower locking rod 801 is equipped with a flat key 12 that matches the keyway 11. Since the lifting handle 802 passes through the gear connecting rod 600, the long connecting rod 601 and the lower locking rod 801 at the same time, when the lifting handle 802 is rotated, the gear connecting rod 600, the long connecting rod 601 and the lower locking rod 801 all rotate, thereby realizing the lifting and lowering movement of the linkage group 6 connected to the lifting handle 802.

[0038] like Figure 2 As shown, upper limit blocks 13 are fixedly installed on both sides of the upper locking rod 800, and lower limit blocks 14 are fixedly installed on both sides of the lower locking rod 801. The upper limit blocks 13 and lower limit blocks 14 on the same side are connected by a tension spring 15. The cooperation between the tension spring 15 on the same side and the upper limit blocks 13 and lower limit blocks 14 can keep the upper locking rod 800 and the lower locking rod 801 collinear. When the upper locking rod 800 and the lower locking rod 801 are collinear, the linkage group 6 is in a dead point state. The dead point characteristic can be used to lock the entire linkage group 6, so that the linkage group 6 is in a locked state. This can keep the auxiliary wheel 3 in a lowered or raised state.

[0039] Working principle of lifting auxiliary wheel 3:

[0040] Rotating the lifting handle 802 upwards causes the gear connecting rod 600 and the long connecting rod 601 to rise, which in turn causes the wheel frame 604 to rise, and consequently the auxiliary wheel 3 to rise. When the lifting handle 802 is rotated to the point where the upper locking rod 800 and the lower locking rod 801 are collinear, the gear connecting rod 600 and the long connecting rod 601 of the linkage group 6 are in a dead state, thereby locking the linkage group 6. In this way, the auxiliary wheel 3 is also locked after being lifted, and the auxiliary wheel 3 will not fall down on its own.

[0041] Working principle of lowering auxiliary wheel 3:

[0042] By rotating the lifting handle 802, a torque is applied to the lower locking lever 801 to release the dead position of the linkage group 6. Specifically, rotating the lifting handle 802 downwards causes the gear connecting rod 600 and the long connecting rod 601 to descend, and also causes the wheel frame 604 to descend, thereby causing the auxiliary wheel 3 to be lowered. After the auxiliary wheel 3 is fully lowered, the gear connecting rod 600 and the long connecting rod 601 in the linkage group 6 are in a collinear position. The dead position characteristic is used to achieve self-locking of the linkage group 6. At the same time, the upper locking lever 800 and the lower locking lever 801 are also in a collinear position under the tension of the tension spring 15. Similarly, the dead position characteristic is used to lock the gear connecting rod 600. In this way, the auxiliary wheel 3 is also locked after being lowered, and the auxiliary wheel 3 will not move.

[0043] In this embodiment, the upper locking lever 800 and the lower locking lever 801 lock the gear connecting rod 600 by rotating the lifting handle 802. Then, the gear connecting rod 600 is unlocked by rotating the lifting handle 802, thereby lifting the auxiliary wheel 3. That is, the self-locking of the auxiliary wheel 3 in the raised or lowered state is achieved by the dead point characteristic of the connecting rod group 6. Unlocking can be achieved by simply rotating the lifting handle 802. The auxiliary wheel 3 can be lowered manually. The structure is stable and reliable and the operation is simple.

[0044] One end of the shock absorber 7 is connected to the wheel frame 604 on the same side, and the other end of the shock absorber 7 is connected to the auxiliary wheel 3 on the same side. The auxiliary wheel 3 is connected to the wheel frame 604 on the same side, so that the shock absorber 7, the auxiliary wheel 3 and the wheel frame 604 on the same side are connected to each other to form a triangular shape. Utilizing the stable characteristics of the triangular structure, this design can keep the shock absorber 7, the wheel frame 604 and the auxiliary wheel 3 in a relatively stable state.

[0045] A spare tire rack 16 is also fixedly installed on the frame 1. The spare tire rack 16 is used to place a spare tire. The spare tire here can be the spare tire of the front wheel 2, such as a paddy field wheel or a rubber wheel, or it can be the spare tire of the auxiliary wheel 3.

[0046] A support leg 20 is installed at the front end of the frame 1. The support leg 20 is located in front of the front wheel 2. When the front wheel 2 needs to be replaced, the support leg 20 is lowered, the front wheel 2 is raised and replaced, and the replaced front wheel 2 is placed on the spare tire rack 16.

[0047] The above description is merely a preferred embodiment of this utility model. The protection scope of this utility model is not limited to the above embodiments. All technical solutions falling within the scope of this utility model's concept are protected. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should also be considered within the protection scope of this utility model.

Claims

1. A riding type water field ditcher with auxiliary wheels and lifting function, comprising a frame (1), a front wheel (2) and two auxiliary wheels (3), the front wheel (2) is installed at the front end of the frame (1) through a reducer (4), and the two auxiliary wheels (3) are installed at the two sides of the rear end of the frame (1), characterized in that, The rear end of the frame (1) is also equipped with a lifting mechanism for raising and lowering the auxiliary wheel (3). The lifting mechanism includes a gearbox (5), a pair of linkage groups (6), a pair of shock absorbers (7), and a lifting assembly (8). The gearbox (5) is fixedly installed at the rear end of the frame (1) and located above the auxiliary wheel (3). The pair of linkage groups (6) are installed on the gearbox (5) and located on both sides of the frame (1). One end of the shock absorber (7) is connected to the linkage group (6) on the same side, and the other end of the shock absorber (7) is connected to the auxiliary wheel (3) on the same side. The connecting end of the auxiliary wheel (3) is connected to the linkage group (6) on the same side. The lifting assembly (8) is connected to one of the linkage groups (6).

2. The riding water furrow opener with a liftable auxiliary wheel according to claim 1, characterized in that, The linkage assembly (6) includes a gear linkage (600), a long linkage (601), a first fork arm (602), a second fork arm (603), and a wheel frame (604). The gear linkage (600) is installed in the gearbox (5) and the two gear linkages (600) mesh with each other. The end of the gear linkage (600) is connected to the long linkage (601). The bottom end of the long linkage (601) is connected to the wheel frame (604). The upper and lower ends of the wheel frame (604) are movably connected to the first fork arm (602) and the second fork arm (603), respectively. The other ends of the first fork arm (602) and the second fork arm (603) are movably connected to the frame (1).

3. The riding water furrow opener with a liftable auxiliary wheel according to claim 2, characterized in that, The first fork arm (602) and the second fork arm (603) are arranged in parallel at the upper and lower ends of the wheel frame (604).

4. A rideable paddy field ditching machine with adjustable auxiliary wheels according to claim 3, characterized in that, The lifting assembly (8) includes an upper locking rod (800), a lower locking rod (801), and a lifting handle (802). The upper locking rod (800) is mounted on the frame (1) in sequence via an extension arm (9) and a bracket (10). The other end of the upper locking rod (800) is rotatably connected to the lower locking rod (801). The lifting handle (802) passes through the gear connecting rod (600), the long connecting rod (601), and the lower locking rod (801). The lifting handle (802) is keyed to the lower locking rod (801) so that rotating the lifting handle (802) can drive the lower locking rod (801) to rotate synchronously.

5. A rideable paddy field ditching machine with adjustable auxiliary wheels according to claim 4, characterized in that, The lower locking lever (801) is connected to the lifting handle (802) at one end with a keyway (11), and the lifting handle (802) is connected to the lower locking lever (801) at one end with a flat key (12) that is compatible with the keyway (11).

6. A rideable paddy field ditching machine with adjustable auxiliary wheels according to claim 4, characterized in that, Upper limit blocks (13) are fixedly installed on both sides of the upper locking rod (800), and lower limit blocks (14) are fixedly installed on both sides of the lower locking rod (801). The upper limit blocks (13) and the lower limit blocks (14) on the same side are connected by a tension spring (15). The cooperation between the tension spring (15) on the same side and the upper limit blocks (13) and the lower limit blocks (14) can keep the upper locking rod (800) and the lower locking rod (801) collinear.

7. A rideable paddy field ditching machine with adjustable auxiliary wheels according to claim 2, characterized in that, One end of the shock absorber (7) is connected to the wheel frame (604) on the same side, and the other end of the shock absorber (7) is connected to the auxiliary wheel (3) on the same side. The auxiliary wheel (3) is connected to the wheel frame (604) on the same side, so that the shock absorber (7), the auxiliary wheel (3) and the wheel frame (604) on the same side are connected to each other in pairs to form a triangular shape.

8. A rideable paddy field ditching machine with adjustable auxiliary wheels according to claim 1, characterized in that, A spare tire rack (16) is also fixedly installed on the frame (1).

9. A rideable paddy field ditching machine with adjustable auxiliary wheels according to claim 1, characterized in that, The reducer (4) is installed at the front end of the frame (1). The front wheel (2) is connected to the output shaft of the reducer (4) via a spline (17) and fixed to the reducer (4) via a washer (18) and a nut (19).

10. A rideable paddy field ditching machine with adjustable auxiliary wheels according to claim 9, characterized in that, The frame (1) is equipped with a support leg (20) at the front end, and the support leg (20) is located in front of the front wheel (2).

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