Crank arm
By designing the fastening surface and connection holes for specific structures on the curved arms, the problem of degradation of the transmission effect of the harvester is solved, and more efficient and reliable power transmission is achieved, ensuring the smooth completion of the harvesting task.
Patent Information
- Application Number
- CN202420790512.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-17
- Publication Date
- 2024-12-27
- Estimated Expiration
- 2034-04-17
AI Technical Summary
During the inverted support process, the existing harvester curved arms are insufficient tightening force or loose bolts, resulting in a decrease in the transmission effect and the harvesting task cannot be effectively completed.
A bent arms are designed, which include first and second connecting holes on the main body, respectively equipped with fastening surfaces to avoid slippage during power transmission, and ensure a secure connection of the transmission shaft through the groove and fastening hole structure. , triangular, rectangular or polygonal connecting holes and drive shaft cross-sections are used to enhance stability.
Through the design of the fastening surface and specific structure, the transmission efficiency and reliability are improved, the slippage phenomenon during the transmission is avoided, and the stable operation and harvesting efficiency of the curved arms are ensured.
Smart Images
Figure CN222235628U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of harvesters, in particular to a crank arm. Background Art
[0002] As agricultural equipment, harvesters are widely used throughout the country. In order to achieve integrated and rapid harvesting, existing harvesters first tilt the harvester and then cut it. An auger roller is required in the tilting process. For example, the patent name: Harvester header auger telescopic tooth fixing device, publication number: CN 201957467 U, the crank arm serves as a transmission connection part between the first support shaft, the second support shaft and the telescopic tooth shaft, which are fastened by bolts. When the fastening force is insufficient or the bolts loosen during use, the transmission effect decreases, and even the harvesting cannot be completed.
[0003] Therefore, there is an urgent need for a crank arm with reliable connection. Utility Model Content
[0004] In view of this, the utility model proposes a first connecting hole and a second connecting hole including at least one fastening surface, through which slipping during power transmission is avoided, thereby improving the transmission efficiency and reliability of power transmission.
[0005] The technical solution of the utility model is implemented as follows: a crank arm includes a main body, on which a first connecting hole and a second connecting hole are provided, and the first connecting hole and the second connecting hole include at least one fastening surface; a first groove is provided on one side of the main body, and the first groove extends from one side of the main body to the first connecting hole, and a second groove is provided on the other side of the main body, and the second groove extends from the other side of the main body to the second connecting hole; a first fastening hole is provided between one side of the main body and the first connecting hole, and a second fastening hole is provided between the other side of the main body and the second connecting hole.
[0006] Based on the above technical solution, preferably, the first fastening hole extends from one side of the main body through the first slot to the other side of the main body; the second fastening hole extends from one side of the main body through the second slot to the other side of the main body.
[0007] On the basis of the above technical solution, preferably, the first connection hole is a triangle, a rectangle or a polygon; the second connection hole is a triangle, a rectangle or a polygon.
[0008] On the basis of the above technical solution, preferably, a connecting cavity is further provided on the main body, one end of the connecting cavity is connected to the first connecting hole, and the other end of the connecting cavity is connected to the second connecting hole.
[0009] On the basis of the above technical solution, preferably, a first default groove is provided on one side of the main body, and a second default groove is provided on the other side of the main body.
[0010] On the basis of the above technical solution, preferably, a first transmission shaft is inserted into the first connecting hole, and a second transmission shaft is inserted into the second connecting hole.
[0011] On the basis of the above technical solution, preferably, the first transmission shaft includes at least one plane that matches with the fastening surface provided in the first connecting hole.
[0012] On the basis of the above technical solution, preferably, the second connecting hole includes at least one plane matching with the fastening surface provided in the second connecting hole.
[0013] On the basis of the above technical solution, preferably, the part of the first transmission shaft inserted into the first connecting hole is a triangular prism, a rectangular parallelepiped or a prism; the part of the second transmission shaft inserted into the second connecting hole is a triangular prism, a rectangular parallelepiped or a prism.
[0014] On the basis of the above technical solution, preferably, a first fastening device is arranged in the first fastening hole, and a second fastening device is arranged in the second fastening hole.
[0015] The crank arm of the utility model has the following beneficial effects compared with the prior art:
[0016] (1) The first connecting hole is inserted into the first transmission shaft, and the second connecting hole is inserted into the second transmission shaft. In order to better realize the function of the crank arm, the first connecting hole and the second connecting hole include at least one fastening surface. When the first transmission shaft is in the first connecting hole and the second transmission shaft is in the second connecting hole, slipping will not occur due to the presence of the fastening surface, and the transmission effect of the crank arm is better;
[0017] (2) Since the first transmission shaft and the second transmission shaft are respectively inserted into the first connection hole and the second connection hole, in order to better insert and remove the first transmission shaft and the second transmission shaft from the first connection hole and the second connection hole, the first fastening hole extends from one side of the main body through the first groove to the other side of the main body, and the portion of the first transmission shaft inserted into the first fastening hole is longer and more secure, and the second fastening hole extends from one side of the main body through the second groove to the other side of the main body, and the portion of the second fastening hole inserted into the second fastening hole is longer and more secure;
[0018] (3) The cross-section of the first connection hole and the second connection hole can be a triangle, rectangle or polygon, and the cross-section of the first transmission shaft and the second transmission shaft can be a corresponding triangle, rectangle or polygon, that is, the part of the first transmission shaft inserted in the first connection hole is a triangular prism, a cuboid or a prism; the part of the second transmission shaft inserted in the second connection hole is a triangular prism, a cuboid or a prism. The above designs are all for avoiding slippage during power transmission. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.
[0020] Figure 1 It is a partial structural schematic diagram of a harvester of the utility model;
[0021] Figure 2 It is a structural schematic diagram of the crank arm of the utility model;
[0022] Figure 3 It is a three-dimensional diagram of the crank arm of the utility model;
[0023] Figure 4 It is a cross-sectional view of the crank arm of the utility model. DETAILED DESCRIPTION
[0024] The following will be combined with the implementation of the utility model to clearly and completely describe the technical solutions in the implementation of the utility model. Obviously, the described implementation is only a part of the implementation of the utility model, not all of the implementations. Based on the implementation of the utility model, all other implementations obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0025] like Figure 1-4 As shown, a crank arm comprises a main body 1, on which a first connection hole 11 and a second connection hole 12 are provided, and the first connection hole 11 and the second connection hole 12 include at least one fastening surface; a first groove 13 is provided on one side of the main body 1, and the first groove 13 extends from one side of the main body 1 to the first connection hole 11, and a second groove 14 is provided on the other side of the main body 1, and the second groove 14 extends from the other side of the main body 1 to the second connection hole 12; a first fastening hole 15 is provided between one side of the main body 1 and the first connection hole 11, and a second fastening hole 16 is provided between the other side of the main body 1 and the second connection hole 12. A first transmission shaft 31 is inserted into the first connection hole 11, and a second transmission shaft 32 is inserted into the second connection hole 12. In order to better realize the function of the crank arm, the first connection hole 11 and the second connection hole 12 include at least one fastening surface. When the first transmission shaft 31 is in the first connection hole 11 and the second transmission shaft 32 is in the second connection hole 12, due to the existence of the fastening surface, no slipping occurs, and the transmission effect of the crank arm is better.
[0026] The first fastening hole 15 extends from one side of the main body 1 through the first slot 13 to the other side of the main body 1; the second fastening hole 16 extends from one side of the main body 1 through the second slot 14 to the other side of the main body 1. Since the first transmission shaft 31 and the second transmission shaft 32 are respectively inserted into the first connection hole 11 and the second connection hole 12, in order to better insert and remove the first transmission shaft 31 and the second transmission shaft 32 from the first connection hole 11 and the second connection hole 12, the first fastening hole 15 extends from one side of the main body 1 through the first slot 13 to the other side of the main body 1, and the portion of the first transmission shaft 31 inserted into the first fastening hole 15 is longer and more secure, and the second fastening hole 16 extends from one side of the main body 1 through the second slot 14 to the other side of the main body 1, and the portion of the second fastening hole 16 inserted into the second fastening hole 16 is longer and more secure.
[0027] In order to better insert and remove the first transmission shaft 31 and the second transmission shaft 32 from the first connecting hole 11 and the second connecting hole 12, a first groove 13 and a second groove 14 are provided on the main body 1. The first groove 13 makes it easier to insert the first transmission shaft 31 into the first connecting hole 11, and the second groove 14 makes it easier to insert the second transmission shaft 32 into the second connecting hole 12.
[0028] A first fastening device 21 is arranged in the first fastening hole 15, and a second fastening device 22 is arranged in the second fastening hole 16. After the first transmission shaft 31 is inserted into the first connection hole 11, in order to transmit the power of the first transmission shaft 31, the first transmission shaft 31 needs to be fixedly arranged in the first connection hole 11. At this time, the first transmission shaft 31 is fixed in the first connection hole 11 by passing the first fastening device 21 through the first slot 13. In this embodiment, the first fastening device 21 uses a combination of bolts and nuts; similarly, in order to transmit the power of the second transmission shaft 32, the second transmission shaft 32 needs to be fixedly arranged in the second connection hole 11. At this time, the second transmission shaft 32 is fixed in the second connection hole 12 by passing the second fastening device 22 through the second slot 14. In this embodiment, the second fastening device 22 uses a combination of bolts and nuts.
[0029] The first transmission shaft 31 includes at least one plane that matches with the fastening surface provided in the first connection hole 11. The second connection hole 12 includes at least one plane that matches with the fastening surface provided in the second connection hole 12. In order to better transmit power and avoid slipping between the first transmission shaft 31 and the first connection hole 11, and between the second transmission shaft 32 and the second connection hole 12, the first transmission shaft 31 includes at least one plane that matches with the fastening surface provided in the first connection hole 11. The second connection hole 12 includes at least one plane that matches with the fastening surface provided in the second connection hole 12.
[0030] The first connection hole 11 is a triangle, rectangle or polygon; the second connection hole 12 is a triangle, rectangle or polygon. The portion of the first transmission shaft 31 inserted into the first connection hole 11 is a triangular prism, a cuboid or a prism; the portion of the second transmission shaft 32 inserted into the second connection hole 12 is a triangular prism, a cuboid or a prism. In actual use, the cross-section of the first connection hole 11 and the second connection hole 12 can be a triangle, a rectangle or a polygon, and the cross-section of the first transmission shaft 31 and the second transmission shaft 32 can be a corresponding triangle, rectangle or polygon, that is, the portion of the first transmission shaft 31 inserted into the first connection hole 11 is a triangular prism, a cuboid or a prism; the portion of the second transmission shaft 32 inserted into the second connection hole 12 is a triangular prism, a cuboid or a prism. The above designs are all for avoiding slipping during power transmission.
[0031] The main body 1 is also provided with a connecting cavity 17, one end of which is connected to the first connecting hole 11, and the other end of which is connected to the second connecting hole 12. A first default groove 18 is provided on one side of the main body 1, and a second default groove 19 is provided on the other side of the main body 1. The connecting cavity 17, the first default groove 18 and the second default groove 19 are used to reduce the weight of the main body 1 and increase the transmission efficiency.
[0032] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.
Claims
1. A crank arm, characterized in that: The invention comprises a main body (1), wherein a first connection hole (11) and a second connection hole (12) are provided on the main body (1), wherein the first connection hole (11) and the second connection hole (12) comprise at least one fastening surface; a first groove (13) is provided on one side of the main body (1), wherein the first groove (13) extends from one side of the main body (1) to the first connection hole (11), and a second groove (14) is provided on the other side of the main body (1), wherein the second groove (14) extends from the other side of the main body (1) to the second connection hole (12); a first fastening hole (15) is provided between one side of the main body (1) and the first connection hole (11), and a second fastening hole (16) is provided between the other side of the main body (1) and the second connection hole (12).
2. A crank arm according to claim 1, characterized in that: The first fastening hole (15) extends from one side of the main body (1) through the first slot (13) to the other side of the main body (1); and the second fastening hole (16) extends from one side of the main body (1) through the second slot (14) to the other side of the main body (1).
3. A crank arm according to claim 2, characterized in that: The first connection hole (11) is in the shape of a triangle, a rectangle or a polygon; the second connection hole (12) is in the shape of a triangle, a rectangle or a polygon.
4. A crank arm according to claim 1, characterized in that: The main body (1) is also provided with a communication cavity (17), one end of the communication cavity (17) is connected to the first connection hole (11), and the other end of the communication cavity (17) is connected to the second connection hole (12).
5. A crank arm according to claim 4, characterized in that: A first default groove (18) is provided on one side of the main body (1), and a second default groove (19) is provided on the other side of the main body (1).
6. A crank arm according to claim 1, characterized in that: A first transmission shaft (31) is inserted into the first connection hole (11), and a second transmission shaft (32) is inserted into the second connection hole (12).
7. A crank arm according to claim 6, characterized in that: The first transmission shaft (31) comprises at least one plane that matches a fastening surface provided in the first connection hole (11).
8. A crank arm according to claim 6, characterized in that: The second connecting hole (12) comprises at least one plane that matches a fastening surface provided in the second connecting hole (12).
9. A crank arm according to claim 6, characterized in that: The portion of the first transmission shaft (31) inserted into the first connection hole (11) is a triangular prism, a rectangular parallelepiped or a prism; the portion of the second transmission shaft (32) inserted into the second connection hole (12) is a triangular prism, a rectangular parallelepiped or a prism.
10. A crank arm according to claim 2, characterized in that: A first fastening device (21) is arranged in the first fastening hole (15), and a second fastening device (22) is arranged in the second fastening hole (16).