Agricultural machine transmission

Abstract

The present application provides a kind of agricultural machinery transmission device, it includes first transmission case and second transmission case, one end of the first transmission case is connected with the power of tractor, the other end is connected with the second transmission case through shaft coupling, the second transmission case includes first transmission shaft, second transmission shaft, third transmission shaft, fourth transmission shaft, fifth transmission shaft, first shift lever and second shift lever, the second transmission shaft can adjust high-low speed gear, third transmission shaft can further fine tuning.The present application has the advantages of effectively reducing the occupied volume, facilitating the miniaturization of equipment, double power output, double gear adjustment and the like.

Description

Technical Field

[0001] This invention relates to the field of agricultural machinery, and more specifically to an agricultural machinery transmission device. Background Technology

[0002] In current technology, agricultural machinery is becoming increasingly smaller to facilitate single-person operation and use. However, being suitable for single-person handheld operation inevitably reduces the size of the equipment, and the slipper clutch device in the transmission system already occupies a relatively large space, making it somewhat unsuitable for use in smaller equipment.

[0003] Therefore, it is necessary to provide a new technical solution. Summary of the Invention

[0004] To address the technical problems existing in the prior art, this invention discloses an agricultural machinery transmission device, the specific technical solution of which is as follows:

[0005] This invention provides an agricultural machinery transmission device, including a first transmission box and a second transmission box. One end of the first transmission box is connected to the power source of the tractor, and the other end is connected to the second transmission box via a coupling.

[0006] The second transmission box includes a first transmission shaft, a second transmission shaft, a third transmission shaft, a fourth transmission shaft, a fifth transmission shaft, a first lever, and a second lever.

[0007] One end of the first drive shaft is connected to the coupling, and the other end is fixed with a large-diameter gear and a small-diameter gear.

[0008] One end of the second drive shaft is provided with a spline, on which a movable high-speed gear and a first lever are fitted. The first lever can move the high-speed gear to mesh with a large-diameter gear or a small-diameter gear on the first drive shaft. The other end of the second drive shaft is provided with a gear with a gear ratio of 1:1, which meshes with one end of the third drive shaft for transmission.

[0009] The other end of the third drive shaft is fitted with three drive gears of progressively increasing diameter. Each drive gear has locking blocks on both sides to secure it. A hollow connecting channel extends from the end of the third drive shaft, creating a gap between the drive gears and the shaft. Multiple slots are evenly distributed on the inner wall of each drive gear. A connecting hole is located on the third drive shaft corresponding to the inner position of each drive gear, and a steel ball is placed inside the connecting hole. When the disc end of the second lever extends into the connecting channel to the connecting hole, the second lever forces the steel ball into the corresponding slot of the drive gear. This drive gear then connects and is fixed to the third drive shaft, transmitting power. Drive gears that are not engaged by the steel ball rotate freely.

[0010] One end of the fourth transmission shaft is fixedly equipped with a driven gear whose diameter decreases sequentially, which meshes with the transmission gear of the third transmission shaft. The other end of the fourth transmission shaft is equipped with a gear with a gear ratio of 1:1, which meshes with one end of the fifth transmission shaft for transmission.

[0011] The other end of the fifth drive shaft outputs power.

[0012] Preferably, the first transmission box includes an input shaft, a first output shaft, and a connecting transmission shaft.

[0013] The input shaft is connected to the tractor's power source.

[0014] The first output shaft is connected to both the input shaft and the connecting transmission shaft via bevel gears, and outputs power outward from the first output shaft.

[0015] The connecting drive shaft is connected to the first drive shaft via a coupling.

[0016] Preferably, the slot has a semi-circular structure.

[0017] Preferably, the cross-sections of the connecting channel and the third transmission shaft are arranged at the same center.

[0018] Preferably, there are an even number of connecting holes, which are symmetrically arranged around the center of the third drive shaft. The diameter of the connecting hole at the inner wall of the third drive shaft is smaller than the diameter of the steel ball, and the diameter of the connecting hole from the outer wall of the third drive shaft to the portion near the inner wall of the third drive shaft is larger than the diameter of the steel ball.

[0019] Preferably, the length of the second lever's disk radius plus the diameter of the steel ball is greater than the radius of the third drive shaft.

[0020] Preferably, adjacent transmission gears on the third transmission shaft are in contact with each other.

[0021] The present invention has the following beneficial effects:

[0022] 1. The agricultural machinery transmission device provided by this invention has a simple structure and ingenious design, making it easy to manufacture and promote.

[0023] 2. The agricultural machinery transmission device provided by the present invention has a more compact structure for the gear meshing clutch device, which can effectively reduce the volume occupied and facilitate the miniaturization of the equipment.

[0024] 3. The agricultural machinery transmission device provided by the present invention adopts dual power output, one of which can be connected to a rotary tiller to loosen the soil, and the other can be connected to a transplanter to plant seedlings.

[0025] 4. The agricultural machinery transmission device provided by the present invention adopts dual-speed adjustment. The second transmission shaft can adjust the high and low speeds, while the third transmission shaft can be fine-tuned, so that the planting speed of the transplanter remains constant.

[0026] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0027] To more clearly illustrate the technical solutions in the embodiments of the present invention 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 the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0028] Figure 1 This is a schematic diagram of the structure of the agricultural machinery transmission device provided in an embodiment of the present invention.

[0029] Figure 2 yes Figure 1 A schematic diagram of the structure inside the second transmission box.

[0030] Figure 3 yes Figure 1 A cross-sectional view of the transmission gear on the third transmission shaft. Detailed Implementation

[0031] Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0032] In the description of this invention, it should be understood that the terms "upper," "lower," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0033] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0034] This invention discloses an agricultural machinery transmission device, with reference to... Figures 1 to 3 It includes a first transmission box 1 and a second transmission box 2. One end of the first transmission box 1 is connected to the power of the tractor, and the other end is connected to the second transmission box 2 through a coupling.

[0035] The second transmission box 2 includes a first transmission shaft 21, a second transmission shaft 22, a third transmission shaft 23, a fourth transmission shaft 24, a fifth transmission shaft 25, a first lever 26, and a second lever 27.

[0036] One end of the first drive shaft 21 is connected to the coupling, and the other end is fixed with a large-diameter gear and a small-diameter gear.

[0037] One end of the second drive shaft 22 is provided with a spline, on which a movable high-speed gear and a first lever 26 are fitted. The first lever 26 can move the high-speed gear to mesh with a large-diameter gear or a small-diameter gear on the first drive shaft 21. The other end of the second drive shaft 22 is provided with a gear with a gear ratio of 1:1, which meshes with one end of the third drive shaft 23 for transmission.

[0038] The other end of the third drive shaft 23 is fitted with three drive gears 3 with progressively increasing diameters. Each drive gear 3 has locking blocks on both sides to hold it in place. A hollow connecting channel 231 extends from the end of the third drive shaft 23. There is a gap between the drive gear 3 and the third drive shaft 23. Multiple slots 31 are evenly distributed on the inner wall of each drive gear 3. A connecting hole 232 is provided on the third drive shaft 23 corresponding to the inner position of each drive gear 3. A steel ball 4 is placed inside the connecting hole 232. When the disc end of the second lever 27 extends into the connecting channel 231 to the connecting hole 232, the second lever 27 presses the steel ball 4 into the corresponding slot 31 of the drive gear 3. This drive gear 3 is then connected and fixed to the third drive shaft 23 to transmit power. Drive gears 3 that are not pushed into the slot by the steel ball 4 rotate freely.

[0039] One end of the fourth transmission shaft 24 is fixedly provided with a driven gear whose diameter decreases sequentially and meshes with the transmission gear 3 of the third transmission shaft 23. The other end of the fourth transmission shaft 24 is provided with a gear with a gear ratio of 1:1 and meshes with one end of the fifth transmission shaft for transmission.

[0040] The other end of the fifth drive shaft 25 outputs power.

[0041] The first transmission box 1 includes an input shaft 11, a first output shaft 12 and a connecting transmission shaft 13. The input shaft 11 is connected to the power of the tractor. The first output shaft 12 is connected to the input shaft 11 and the connecting transmission shaft 13 respectively through bevel gears. The first output shaft 12 outputs power outward. The connecting transmission shaft 13 is connected to the first transmission shaft 21 through a coupling.

[0042] The slot 31 has a semi-circular structure.

[0043] The cross-sections of the connecting channel 231 and the third transmission shaft are set at the same center.

[0044] The number of connecting holes 232 is even and they are symmetrically arranged around the center of the third drive shaft 23. The diameter of the connecting hole 232 at the inner wall of the third drive shaft 23 is smaller than the diameter of the steel ball 4, and the diameter of the connecting hole 232 from the outer wall of the third drive shaft 23 to the portion near the inner wall of the third drive shaft 23 is larger than the diameter of the steel ball 4.

[0045] The length of the second lever 27's disk radius plus the diameter of the steel ball 4 is greater than the radius of the third drive shaft 23.

[0046] The adjacent transmission gears 3 on the third transmission shaft 23 are in contact with each other, which greatly reduces the space occupied.

[0047] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. In addition, those skilled in the art can combine and integrate the different embodiments or examples described in this specification.

[0048] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications and variations to the above embodiments within the scope of the present invention.

Claims

1. An agricultural machine transmission, comprising: The first transmission box and the second transmission box are connected through a shaft coupling, The second transmission box includes a first transmission shaft, a second transmission shaft, a third transmission shaft, a fourth transmission shaft, a fifth transmission shaft, a first shifting lever and a second shifting lever, One end of the first transmission shaft is connected with the shaft coupling, and the other end is fixed with a large-diameter gear and a small-diameter gear, One end of the second transmission shaft is provided with a spline, and a movable high-low speed gear and a first shifting lever are sleeved on the spline, the first shifting lever can shift the high-low speed gear to engage with the large-diameter gear or the small-diameter gear on the first transmission shaft, the other end of the second transmission shaft is provided with a gear with a gear ratio of 1:1 to engage with one end of the third transmission shaft, The other end of the third transmission shaft is sleeved with three transmission gears with increasing diameters, the transmission gears are clamped by clamping blocks on both sides, the third transmission shaft is internally provided with a hollow connection channel extending to the end of the third transmission shaft, there is a gap between the transmission gears and the third transmission shaft, a plurality of clamping grooves are uniformly arranged on the inner side wall of the transmission gears, a connecting hole is arranged on the third transmission shaft corresponding to the position of the inner side of each transmission gear, a steel ball is arranged in the connecting hole, when the disc end of the second shifting lever extends into the connection channel to the connecting hole, the second shifting lever extrudes the steel ball into the clamping groove of the corresponding transmission gear, the transmission gear is connected and fixed with the third transmission shaft and transmits power, the transmission gears without steel balls are idling, One end of the fourth transmission shaft is fixedly provided with driven gears with diameters decreasing from large to small to engage with the transmission gears of the third transmission shaft, the other end of the fourth transmission shaft is provided with a gear with a gear ratio of 1:1 to engage with one end of the fifth transmission shaft, The other end of the fifth transmission shaft outputs power.

2. The farm machinery transmission of claim 1, wherein, The first transmission box includes an input shaft, a first output shaft and a connecting transmission shaft, The input shaft is connected with the power of the tractor, The first output shaft is connected with the input shaft and the connecting transmission shaft through bevel gears respectively, and the first output shaft outputs power outward, The connecting transmission shaft is connected with the first transmission shaft through a shaft coupling.

3. The farm machinery transmission of claim 1, wherein, The clamping groove is a semicircular structure.

4. The farm machinery transmission of claim 3, wherein, The connection channel and the third transmission shaft have the same center.

5. The farm machinery transmission of claim 1, wherein, The connecting holes are even and symmetrically arranged with the center of the third transmission shaft, the diameter of the connecting holes at the inner side wall of the third transmission shaft is smaller than the diameter of the steel ball, and the diameter of the connecting holes from the outer side wall of the third transmission shaft to the part close to the inner side wall of the third transmission shaft is larger than the diameter of the steel ball.

6. The farm machinery transmission of claim 5, wherein, The radius of the disc of the second shifting lever plus the diameter of the steel ball is greater than the radius of the third transmission shaft.

7. The farm machinery transmission of claim 1, wherein, The adjacent transmission gears on the third transmission shaft contact each other.

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