Digging device and tractor

Abstract

The present invention proposes a digging device for use on a tractor, comprising an output drive shaft and a digging mechanism disposed at one end of the output drive shaft, the digging mechanism comprising an eccentric shaft connected to the output drive shaft, the eccentric shaft being provided with a fixed eccentric shaft gear, the periphery of the eccentric shaft gear being provided with a limit gear meshing with the eccentric shaft gear, the eccentric shaft being provided with a plurality of guide arms at one end away from the limit gear, and a plurality of buckets being provided at one end of the guide arms, so that when the eccentric shaft rotates, the guide arms drive the buckets to move. The digging device of this structure is relatively simple and can be installed on an ordinary tractor, thus having a relatively low cost of use. In addition, since there are a plurality of buckets, digging can be continued during the rotation of the eccentric shaft, thus achieving extremely high digging efficiency. In addition, the present invention also proposes a tractor comprising the above-mentioned digging device.

Description

Technical Field

[0001] The present invention relates to the field of agricultural machinery, and in particular to a digging device and a tractor. Background Art

[0002] In recent years, with the continuous development of science and technology, agricultural machinery of various structures, such as tractors, have been widely used in agricultural production and life.

[0003] The tractors currently in widespread use are mainly used for transportation. At the same time, a rotary tiller or a seed drill can be hung on one end. As people's living standards continue to improve, the functions of the tractors currently in use are still not powerful enough. For example, many tasks such as digging holes and planting trees cannot be completed. Therefore, they are far from meeting people's daily needs.

[0004] In summary, how to provide an excavator with a simple structure, low operating cost, and high digging efficiency, and a tractor including such an excavator, has become a technical problem that needs to be urgently solved by those skilled in the art. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to provide a digging device with simple structure, low use cost and high digging efficiency, and a tractor comprising the digging device.

[0006] The solution of the present invention is achieved as follows: The present invention proposes a digging device for use on a tractor, comprising an output drive shaft and a digging mechanism disposed at one end of the output drive shaft, the digging mechanism comprising an eccentric shaft connected to the output drive shaft, the eccentric shaft being provided with a fixed eccentric shaft gear, the periphery of the eccentric shaft gear being provided with a limit gear meshing with the eccentric shaft gear, the eccentric shaft being provided with a plurality of guide arms at one end away from the limit gear, and a plurality of buckets being provided at one end of the guide arms. When the eccentric shaft rotates, the guide arms drive the buckets to move. The digging device of this structure is relatively simple and can be installed on an ordinary tractor, thus having a relatively low cost of use. In addition, since there are a plurality of buckets, digging can be continued during the rotation of the eccentric shaft, thus achieving extremely high digging efficiency.

[0007] Another technical solution of the present invention is that on the basis of the above, the digging device also includes two shafts, one end of the two shafts is connected to the eccentric shaft, when the eccentric shaft rotates, it drives the two shafts to rotate, and the guide arm is set on the two shafts.

[0008] Another technical solution of the present invention is that on the basis of the above, a retaining ring and a detachable end cover are provided on the eccentric shaft, one side of the end of the two shafts is supported on the retaining ring, and the other side is supported on the end cover, and a bolt is also provided on the end cover, one end of the bolt is placed on the eccentric shaft.

[0009] Another technical solution of the present invention is that on the basis of the above, the bucket includes a first bucket, the guide arm includes a first guide arm and a second guide arm, one end of the first guide arm and the second guide arm are respectively connected to the two shafts, and the other end of the first guide arm and the second guide arm are respectively connected to the first bucket.

[0010] Another technical solution of the present invention is that on the basis of the above, a first rotating shaft is provided on one corner of the first bucket, a second rotating shaft is provided on another corner of the first bucket, the other end of the first guide arm is movably connected to the first rotating shaft, and the other end of the second guide arm is movably connected to the second rotating shaft.

[0011] Another technical solution of the present invention is that, based on the above, a limit block that can slide along the first guide arm is further provided on the first guide arm, a bearing is provided on the limit gear, and one end of the limit block is rotatably set on the bearing.

[0012] Another technical solution of the present invention is that on the basis of the above, the bucket also includes a second bucket with the same structure as the first bucket, the guide arm also includes a third guide arm and a fourth guide arm, and the rotating shaft also includes a third rotating shaft and a fourth rotating shaft arranged on the second bucket, one end of the third guide arm and the fourth guide arm are respectively connected to the two shafts, and the other end is movably connected to the third rotating shaft and the fourth rotating shaft respectively.

[0013] On the other hand, the present invention also proposes a tractor, comprising a head, a fifth wheel and a frame, wherein one end of the fifth wheel is connected to the head and the other end is connected to the frame, a lifting device is provided on the frame, a digging device is provided on the lifting device, and the digging device is the digging device described above.

[0014] Another technical solution of the present invention is that, based on the above, a PTO gearbox is further provided on the frame, one end of the output drive shaft is connected to the PTO gearbox, and when the PTO gearbox rotates, it drives the output drive shaft to rotate.

[0015] Another technical solution of the present invention is that on the basis of the above, the tractor is further provided with a lifting device, the lifting device includes a lifting mechanism, the lifting mechanism is fixedly connected to the digging device, the lifting mechanism is provided with an oil cylinder, and when the oil cylinder is extended and retracted, it drives the digging device to move up and down. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The accompanying drawings, which constitute a part of the present invention, are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute improper limitations on the present invention.

[0017] Figure 1 This is a structural schematic diagram of a tractor according to the present invention;

[0018] Figure 2 for Figure 1 Transmission principle diagram of the middle A direction;

[0019] Figure 3 for Figure 2 A magnified schematic diagram of part B in the middle;

[0020] Figure 4 for Figure 2 rear view.

[0021] The corresponding relationship of the reference numerals is:

[0022] 1 head 2 traction seat 3 frame

[0023] 4 lifting device 5 digging mechanism

[0024] 11 Main gearbox 12 First joystick 13 Second joystick

[0025] 14PTO drive shaft

[0026] 31PTO gearbox 32Output drive shaft

[0027] 41 lifting mechanism 42 oil cylinder 43 bearing seat

[0028] 51 eccentric shaft 52 limiting gear 53 eccentric shaft gear

[0029] 54 limit block 55 second axis 56 guide arm

[0030] 57 bucket 58 shaft 521 bearing

[0031] 551 retaining ring 552 bolt 553 end cover

[0032] 561 first guide arm 562 second guide arm 563 third guide arm

[0033] 564 fourth guide arm

[0034] 581 first rotating shaft 582 second rotating shaft 583 third rotating shaft

[0035] 584 Fourth Revolving Axis

[0036] 591 first bucket 592 second bucket DETAILED DESCRIPTION

[0037] The present invention is described in detail below with reference to the accompanying drawings. The description in this section is merely exemplary and explanatory and should not have any limiting effect on the scope of protection of the present invention. In addition, those skilled in the art can combine the features in the embodiments and different embodiments of this document accordingly based on the description of this document.

[0038] The embodiments of the present invention are as follows, see Figures 1 to 4 The digging device and tractor shown in the figure, the digging device specifically includes an output transmission shaft 32 and a device arranged at one end of the output transmission shaft 32, namely Figure 1 The digging mechanism 5 at the right end shown in the figure comprises an eccentric shaft 51 connected to the output transmission shaft 32, a fixed eccentric shaft gear 53 is provided on the eccentric shaft 51, and a limit gear 52 is provided on the periphery of the eccentric shaft gear 53 that meshes with the eccentric shaft gear 53. The end of the eccentric shaft 51 that is away from the limit gear 52, i.e. Figure 1 and Figure 2 The right end is also equipped with several guide arms 56, each of which has a plurality of buckets 57 attached to one end. Rotation of the output drive shaft 32 drives the connected eccentric shaft 51, which in turn drives the buckets 57 attached to the guide arms 56, thereby enabling the digging operation. This digging device has a relatively simple structure and can be installed on a common tractor, resulting in relatively low operating costs. Furthermore, the presence of multiple buckets 57 allows continuous digging during the rotation of the eccentric shaft 51, resulting in extremely high digging efficiency.

[0039] Based on the above embodiment, in another embodiment of the present invention, Figure 2 As shown, the digging device also includes two shafts 55. One end of the two shafts 55, that is, the left end shown in the figure, is connected to the right end of the eccentric shaft 51. When the eccentric shaft 51 rotates, it drives the two shafts 55 to rotate. A plurality of guide arms 56 are set on the two shafts 55.

[0040] Based on the above embodiment, in another embodiment of the present invention, Figure 2 and Figure 3 As shown, the eccentric shaft 51 is provided with a retaining ring 551 and a detachable end cover 553, and the end cover 553 is arranged opposite to the retaining ring 551. One side of the end of the second shaft 55, that is, the left side shown in the figure, is abutted on the retaining ring 551, and the other side, that is, the right side shown in the figure, is abutted on the end cover 553. A bolt 552 is also provided on the end cover 553. One end of the bolt 552, that is, the left end shown in the figure, is placed on the eccentric shaft 51. When the second shaft 55 needs to be disassembled, the bolt 552 must be removed first, and then the end cover 553 can be removed.

[0041] Based on the above embodiment, in another embodiment of the present invention, Figure 2 and Figure 4As shown, the bucket 57 specifically includes a first bucket 591. The guide arm 56 specifically includes a first guide arm 561 and a second guide arm 562. One end of the first guide arm 561 and the second guide arm 562, i.e., the end close to the two shafts 55, are respectively connected to the two shafts 55, and the other end of the first guide arm 561 and the second guide arm 562, i.e., the end close to the first bucket 591, are respectively connected to the first bucket 591.

[0042] Based on the above embodiment, in another embodiment of the present invention, Figure 4 As shown, a rotating shaft 58 is provided on one corner of the first bucket 591, and the rotating shaft 58 is specifically a first rotating shaft 581. A second rotating shaft 582 is provided on the other corner of the first bucket 591. The first rotating shaft 581 and the second rotating shaft 582 are arranged opposite to each other. The other end of the first guide arm 561, that is, the left end shown in the figure, is movably connected to the first rotating shaft 581, and the other end of the second guide arm 562, that is, the left end shown in the figure, is movably connected to the second rotating shaft 582.

[0043] Based on the above embodiment, in another embodiment of the present invention, Figures 2 to 4 As shown, the first guide arm 561 is also provided with a limit block 54 that can slide along the first guide arm 561, and a bearing 521 is provided at a corresponding position on the limit gear 52. One end of the limit block 54, that is, the left end shown in the figure, is rotatably set on the bearing 521.

[0044] Based on the above embodiment, in another embodiment of the present invention, Figure 4 As shown, the bucket also includes a second bucket 592 with the same structure as the first bucket 591, the guide arm also includes a third guide arm 563 and a fourth guide arm 564, the rotating shaft 58 also includes a third rotating shaft 583 and a fourth rotating shaft 584 provided on the second bucket 592, and one end of the third guide arm 563 and the fourth guide arm 564, namely Figure 4 The left end shown is connected to the two shafts 55, and the other end, i.e. Figure 4 The right end shown is movably connected to the third rotating shaft 583 and the fourth rotating shaft 584 respectively.

[0045] As previously mentioned, the digging device of the above structure is relatively simple in structure and can be installed on a common tractor, thus having a relatively low cost of use. Furthermore, because there are multiple buckets, including at least a first bucket 591 and a second bucket 592, the buckets can continuously dig the pit during the rotation of the eccentric shaft 51, thereby achieving extremely high digging efficiency.

[0046] On the other hand, the present invention also provides a tractor, such as Figure 1As shown, it includes a head 1, a traction seat 2 and a frame 3. One end of the traction seat 2, that is, the left end shown in the figure, is connected to the right end of the head 1, and the other end of the traction seat 2, that is, the right end shown in the figure, is connected to the left end of the frame 3. A lifting device 4 is also provided on the frame 3, specifically the right end of the frame 3, and a digging device is provided on the lifting device 4. The digging device is specifically the digging device described above.

[0047] Based on the above embodiment, in another embodiment of the present invention, Figure 1 As shown, a PTO (power take-off) gearbox is also provided on the frame 3. One end of the output drive shaft 32, namely the left end shown in the figure, is connected to the PTO gearbox 31. When the PTO gearbox 31 rotates, it drives the output drive shaft 32 to rotate, thereby driving the eccentric shaft 51 and the secondary shaft 55 to rotate. More specifically, the tractor is also provided with a main gearbox 11 and a PTO drive shaft 14. One end of the PTO drive shaft 14, namely the left end shown in the figure, is connected to the main gearbox 11, and the other end of the PTO drive shaft 14, namely the right end shown in the figure, is connected to the PTO gearbox 31. That is, the power from the main gearbox 11 is transmitted to the PTO gearbox 31 through the PTO drive shaft 14.

[0048] Based on the above embodiment, in another embodiment of the present invention, Figure 1 As shown, the tractor is also provided with a lifting device 4. In order to keep the digging device always level, the lifting device 4 also includes a lifting mechanism 41 arranged in a parallelogram. One end of the lifting mechanism 41, that is, the left end frame 3 shown in the figure is connected, and the other end of the lifting mechanism 41, that is, the right end shown in the figure, is provided with a bearing seat 53 and is fixedly connected to the digging device through the bearing seat 53. The lifting mechanism 41 is provided with a cylinder 42, which is placed inside the lifting mechanism 41 in the parallelogram. When the cylinder 42 is extended and retracted, it drives the digging device to move up and down.

[0049] In addition, a cab is located on one side of the machine head 1. Inside the cab are a first joystick 12 and a second joystick 13. The first joystick 12 functions as a distribution valve lever, while the second joystick 13 functions as a PTO output lever. When the first joystick 12 is turned, the oil cylinder 42 activates, driving the lifting mechanism 41 up and down to adjust the depth of the pit. The second joystick 13 controls the separation and connection of the PTO drive shaft 14 from the power source. When the PTO drive shaft 14 is separated from the power source, the bucket stops operating. When the PTO drive shaft 14 is connected to the power source, the bucket starts operating.

[0050] During operation, the main gearbox 11 transmits the power of the engine to the PTO gearbox 31 through the PTO transmission shaft 14, and then transmits the power to the eccentric shaft 51 through the output transmission shaft 32. The eccentric shaft gear 53 on the eccentric shaft 51 rotates around the internal teeth of the limit gear 52, thereby driving the first guide arm 561, the second guide arm 562, the third guide arm 563 and the fourth guide arm 564 to swing. At this time, the ends of the first guide arm 561, the second guide arm 562, the third guide arm 563 and the fourth guide arm 564 perform a curved motion of extension and contraction. The first bucket 591 has the first rotating shaft 581 and the second rotating shaft 582 as the hinge points, and the second bucket 592 has the third rotating shaft 583 and the fourth rotating shaft 584 as the hinge points, thereby achieving the purpose of digging a pit.

[0051] The tractor of the above structure has the advantages of high digging efficiency and low use cost.

[0052] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications should also be regarded as within the scope of protection of the present invention.

Claims

1. A digging device for a tractor, characterized in that: The invention comprises an output transmission shaft and a digging mechanism provided at one end of the output transmission shaft, wherein the digging mechanism comprises an eccentric shaft connected to the output transmission shaft, the eccentric shaft is provided with a fixed eccentric shaft gear, the periphery of the eccentric shaft gear is provided with a limit gear meshing with the eccentric shaft gear, the end of the eccentric shaft away from the limit gear is further provided with a plurality of guide arms, and one end of the plurality of guide arms is further provided with a plurality of buckets, and when the eccentric shaft rotates, the buckets are driven to move through the guide arms; The digging device further includes two shafts, one end of each of the two shafts is connected to the eccentric shaft, and when the eccentric shaft rotates, the two shafts are driven to rotate, and the guide arm is arranged on the two shafts; The bucket includes a first bucket, and the guide arm includes a first guide arm and a second guide arm, one end of the first guide arm and the second guide arm are respectively connected to the two shafts, and the other end of the first guide arm and the second guide arm are respectively connected to the first bucket; A first rotating shaft is provided at one corner of the first bucket, a second rotating shaft is provided at another corner of the first bucket, the other end of the first guide arm is movably connected to the first rotating shaft, and the other end of the second guide arm is movably connected to the second rotating shaft; The bucket also includes a second bucket with the same structure as the first bucket, the guide arm also includes a third guide arm and a fourth guide arm, and the rotating shaft also includes a third rotating shaft and a fourth rotating shaft arranged on the second bucket, one end of the third guide arm and the fourth guide arm are respectively connected to the two shafts, and the other end is movably connected to the third rotating shaft and the fourth rotating shaft.

2. The digging device according to claim 1, characterized in that The eccentric shaft is provided with a retaining ring and a detachable end cover. One side of the end of the two shafts is supported on the retaining ring and the other side is supported on the end cover. The end cover is also provided with a bolt, one end of which is placed on the eccentric shaft.

3. The digging device according to claim 2, characterized in that: The first guide arm is further provided with a limiting block which can slide along the first guide arm. The limiting gear is provided with a bearing. One end of the limiting block is rotatably arranged on the bearing.

4. A tractor comprising a machine head, a fifth wheel and a frame, wherein one end of the fifth wheel is connected to the machine head and the other end is connected to the frame, the frame is provided with a lifting device, and the lifting device is provided with a digging device, characterized in that: The digging device is the digging device according to any one of claims 1 to 3.

5. The tractor according to claim 4, characterized in that: A PTO gearbox is also provided on the frame, and one end of the output transmission shaft is connected to the PTO gearbox. When the PTO gearbox rotates, the output transmission shaft is driven to rotate.

6. The tractor according to claim 5, characterized in that The tractor is also provided with a lifting device, which includes a lifting mechanism. The lifting mechanism is fixedly connected to the digging device. The lifting mechanism is provided with an oil cylinder. When the oil cylinder is extended or retracted, it drives the digging device to move up and down.

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