Agricultural machine connecting casting

Abstract

The utility model relates to agricultural machinery and equipment technical field discloses a kind of agricultural machinery connecting casting, comprising: connecting casting main body, connecting casting main body has opposite first side and second side;Connecting arm, connecting arm forms from the first side of connecting casting main body and extends outward;First connecting part, first connecting part is located in connecting arm;First connecting part is equipped with first shaft hole;Second connecting part, second connecting part is located in second side;Second connecting part is equipped with second shaft hole;Wherein, connecting casting main body is detachably connected in parallelogram suspension mechanism;Parallelogram suspension mechanism includes upper link and lower link;Upper link both ends are respectively hinged with agricultural machinery and first shaft hole;Lower link both ends are respectively hinged with agricultural machinery and second shaft hole.The utility model is through external first connecting part and second connecting part, overcome the shortcoming that square tube is easily deformed in traditional design;Through integrated casting, improve the strength of this agricultural machinery connecting casting, prolong service life.

Description

Technical Field

[0001] This utility model relates to the field of agricultural machinery and equipment technology, and more specifically, to an agricultural machinery connecting casting. Background Technology

[0002] In modern agricultural machinery, tractors rely on suspension mechanisms to drive various implements, such as plows, harrows, and seeders. Among these, the parallelogram suspension mechanism is widely used in sowing, fertilizing, and tillage operations because it provides stable traction and lifting motion, allowing the implements to maintain a nearly constant angle of penetration and tillage depth. This mechanism typically includes a machine support (which can be considered a fixed lateral link), an upper link, a lower link, and movable lateral links. The movable lateral links are generally designed as connectors for linking implements.

[0003] As the core of the load-bearing structure, this connector needs to be hinged to both the upper and lower connecting rods and effectively transmit the working resistance (such as soil cutting resistance) and its own weight to the tractor body. Therefore, it must have sufficient structural strength. At present, most connectors of this type adopt a square tube structure with hinge holes at the upper and lower ends of the square tube, so as to be hinged to the upper and lower connecting rods respectively. However, this connector has the following defects: (1) High risk of stress concentration and fatigue fracture: Traditional designs often concentrate the stress in the hinge holes of the square tube. These stress concentration points are very prone to fatigue cracks, which lead to deformation of the hinge holes, premature failure of the connector, and affect the safety and reliability of operation. (2) Heavy structure and low material utilization: In order to ensure strength, existing designs often simply increase the material thickness, resulting in excessive weight of the parts. This not only increases the extra load and energy consumption of the tractor, but also wastes materials. Utility Model Content

[0004] To address at least one of the aforementioned problems, this utility model first provides an agricultural machinery connecting casting, comprising: a connecting casting body having a first side and a second side opposite to each other; a connecting arm extending outward from the first side of the connecting casting body; a first connecting portion disposed on the connecting arm; the first connecting portion having a first shaft hole; a second connecting portion disposed on the second side; the second connecting portion having a second shaft hole; wherein the first connecting portion and the second connecting portion are offset in the vertical direction; wherein the connecting casting body is detachably connected to a parallelogram suspension mechanism, and the parallelogram suspension mechanism is fixedly installed on the agricultural machinery; the parallelogram suspension mechanism includes an upper connecting rod and a lower connecting rod; the two ends of the upper connecting rod are respectively hinged to the agricultural machinery and the first shaft hole; the two ends of the lower connecting rod are respectively hinged to the agricultural machinery and the second shaft hole.

[0005] Optionally, it also includes at least one reinforcing plate; the reinforcing plate extends from the main body of the connecting casting to the connecting arm and the second connecting portion respectively, so as to increase the connection strength among the three.

[0006] Optionally, the connecting casting body further includes a third side and a fourth side opposite to each other; the number of reinforcing plates is two, and they are respectively disposed on the third side and the fourth side of the connecting casting body; the two reinforcing plates are symmetrically arranged.

[0007] Optionally, the reinforcing plate has a first inclined portion at one end near the first connecting portion; the reinforcing plate has a second inclined portion at one end near the second connecting portion; the widths of the first connecting portion and the second connecting portion are both greater than the width of the main body of the connecting casting.

[0008] Optionally, the reinforcing plate has several through holes along its extension direction on its surface.

[0009] Optionally, a plurality of connecting ribs are provided between the connecting arm and the upper surface of the reinforcing plate and / or the lower surface of the reinforcing plate.

[0010] Optionally, the connecting arm is L-shaped; the bottom of the connecting arm has an inclined surface structure; and the two sides of the bottom of the connecting arm protrude outward to form connecting plates.

[0011] Optionally, the main body of the connecting casting is a rectangular tube structure; the top opening of the main body of the connecting casting is integrally formed with a U-shaped connecting block.

[0012] Optionally, the second shaft hole has annular grooves at both ends.

[0013] Optionally, both the first connecting part and the second connecting part are horizontally arranged columnar structures; the second connecting part is provided with a plurality of reinforcing ribs along its axial direction, and the plurality of reinforcing ribs are integrally connected with the second side of the main body of the connecting casting.

[0014] Compared with the prior art, this utility model overcomes the shortcomings of traditional designs where the hinge holes of square tubes are prone to deformation by using external first and second connecting parts, reducing stress concentration and avoiding the need for the square tubes to be designed to be too thick to resist stress. By integrally casting the reinforcing plate, connecting arm, second connecting part and the main body of the connecting casting, the strength of the agricultural machinery connecting casting can be improved and its service life extended. Attached Figure Description

[0015] Figure 1 This is an overall structural diagram of the agricultural machinery connecting casting in this utility model;

[0016] Figure 2 This is a bottom structural diagram of the main body of the casting in this utility model;

[0017] Figure 3 for Figure 1 The left view;

[0018] Figure 4 for Figure 1 The front view;

[0019] Figure 5 for Figure 1 Top view;

[0020] Figure 6 This is a schematic diagram of the parallelogram suspension mechanism and the main body of the connecting casting in this utility model;

[0021] Figure 7 This is a structural diagram of the reinforcing ribs and connecting ribs in this utility model.

[0022] Explanation of reference numerals in the attached figures:

[0023] 1-Connecting casting body; 2-First connecting part; 3-Second connecting part; 4-Parallelogram suspension mechanism; 5-Connecting arm; 6-Reinforcing plate; 7-Reinforcing rib; 8-Connecting rib; 101-First side; 102-Second side; 103-Third side; 104-Fourth side; 105-U-shaped connecting block; 201-First shaft hole; 301-Second shaft hole; 302-Annular groove; 401-Upper connecting rod; 402-Lower connecting rod; 501-Inclined surface structure; 502-Connecting plate; 601-First inclined part; 602-Second inclined part; 603-Through hole. Detailed Implementation

[0024] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0025] In the description of this utility model, it should be understood that the terms "upper" and "lower" indicate the orientation or positional relationship based on the orientation or positional relationship when the product is in normal use.

[0026] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature.

[0027] Example 1

[0028] This utility model provides a casting for connecting agricultural machinery. Please refer to [link / reference]. Figure 1-7 As shown, it includes: a connecting casting body 1, the connecting casting body 1 having opposing first sides 101 and second sides 102; and a connecting arm 5, please refer to [reference needed]. Figure 1The connecting arm 5 extends outward from the first side 101 of the connecting casting body 1; a first connecting part 2 is provided on the connecting arm 5; the first connecting part 2 has a first shaft hole 201; a second connecting part 3 is provided on the second side 102; the second connecting part 3 has a second shaft hole 301; wherein, the first connecting part 2 and the second connecting part 3 are staggered in the vertical direction and are located on opposite sides of the connecting casting body 1, that is, on the first side 101 and the second side 102 respectively; wherein, as Figure 6 As shown, the main body 1 of the connecting casting is detachably connected to the parallelogram suspension mechanism 4, and the parallelogram suspension mechanism 4 is fixedly installed on the agricultural machinery. The main function of the parallelogram suspension mechanism 4 is to facilitate lifting and lowering. The parallelogram suspension mechanism 4 includes an upper connecting rod 401 and a lower connecting rod 402. The two ends of the upper connecting rod 401 are respectively hinged to the agricultural machinery and the first shaft hole 201. The two ends of the lower connecting rod 402 are respectively hinged to the agricultural machinery and the second shaft hole 301.

[0029] like Figure 1-2 As shown, it also includes at least one reinforcing plate 6; the reinforcing plate 6 extends from the main body of the connecting casting 1 to the connecting arm 5 and the second connecting part 3 respectively, so as to increase the connection strength among the three. When the agricultural machinery is raising and lowering the parallelogram suspension mechanism 4 or when the agricultural machinery is tilling the ground, the upper connecting rod 401 and the lower connecting rod 402 exert a large force on the first connecting part 2 and the second connecting part 3 respectively. The reinforcing plate 6 can enhance the connection strength between the connecting arm 5, the second connecting part 3 and the main body of the connecting casting 1, and prevent the connecting arm 5 and the second connecting part 3 from being pulled and thus separated from the main body of the connecting casting 1. In addition, the reinforcing plate 6, the connecting arm 5, the second connecting part 3 and the main body of the connecting casting 1 are integrally cast, which can improve the strength of the agricultural machinery connecting casting and extend its service life.

[0030] like Figure 2-3 As shown, the connecting casting body 1 also includes a third side 103 and a fourth side 104 opposite to each other; there are two reinforcing plates 6, which are respectively provided on the third side 103 and the fourth side 104 of the connecting casting body 1; the two reinforcing plates 6 are symmetrically arranged; reinforcing plates 6 are designed on both sides of the connecting casting body 1, which further improves the connection strength between the connecting arm 5, the second connecting part 3 and the connecting casting body 1.

[0031] like Figure 1 As shown, the reinforcing plate 6 has a first inclined portion 601 at one end near the first connecting portion 2; the reinforcing plate 6 has a second inclined portion 602 at one end near the second connecting portion 3. The design of the first inclined portion 601 and the second inclined portion 602 can save materials while still maintaining sufficient strength. The width of the first connecting portion 2 and the second connecting portion 3 is greater than the width of the connecting casting body 1, so as to avoid interference with the connecting casting body 1 when the upper connecting rod 401 and the lower connecting rod 402 move after the upper connecting rod 401 and the lower connecting rod 402 are assembled.

[0032] like Figure 1-2 As shown, the reinforcing plate 6 has several through holes 603 along its extension direction on its surface, which reduces stress concentration and optimizes stress distribution. Moreover, during the casting process, the through holes help the molten metal flow evenly and the gas to be discharged, reducing porosity and making the temperature field more uniform. In addition, the through holes 603 also facilitate the laying of pipelines or the fixing of other auxiliary components.

[0033] like Figure 3 As shown, the connecting arm 5 is L-shaped, which facilitates the vertical offset of the first shaft hole 201 and the second shaft hole 301, so that it can form a parallelogram suspension mechanism 4 with the upper connecting rod 401 and the lower connecting rod 402 of the tractor. The bottom of the connecting arm 5 has an inclined surface structure 501. The L-shaped corner of the connecting arm 5 is a typical stress concentration area, which is prone to fatigue cracks under repeated loads. The inclined surface structure 501 reduces stress concentration. The two sides of the bottom of the connecting arm 5 protrude outward to form connecting plates 502 to strengthen the connection.

[0034] like Figure 1 As shown, the main body 1 of the connecting casting is a rectangular tube structure; the top opening of the main body 1 of the connecting casting is integrally formed with a U-shaped connecting block 105, which can withstand lateral force and moment, and improve the mechanical properties of the main body 1 of the connecting casting.

[0035] like Figure 1 As shown, the second shaft hole 301 has annular grooves 302 at both ends. When the second shaft hole 301 is assembled with the lower connecting rod 402, a rotating shaft or pin will pass through the second shaft hole 301. Taking the rotating shaft as an example, a stop ring is set at each end of the rotating shaft. The stop ring is installed in the annular groove 302 to prevent the rotating shaft from wobbling left and right, which would affect the lower connecting rod 402. Because the left and right wobbling of the rotating shaft can easily cause the lower connecting rod 402 to be subjected to the force in the left and right direction and deform, thereby shortening its service life.

[0036] Example 2

[0037] Based on the above embodiments, such as Figure 7As shown, both the first connecting part 2 and the second connecting part 3 are horizontally arranged columnar structures. The second connecting part 3 has multiple reinforcing ribs 7 along its axial direction, and these reinforcing ribs 7 are integrated with the second side 102 of the main body 1 of the connecting casting, further improving the connection strength between the reinforcing ribs 7 and the second connecting part 3. In agricultural machinery, a mounting bracket is generally provided below the main body 1 of the connecting casting. Various agricultural tools, such as digging and tilling attachments, can be mounted on the mounting bracket. When the parallelogram suspension mechanism 4 drives the main body 1 of the connecting casting to rise and fall, due to the large weight of the mounting bracket and the agricultural tools and other attachments, the second connecting part 3 will be subjected to an upward pulling force, and the second connecting part 3 may tend to detach from the main body 1 of the connecting casting. Designing reinforcing ribs 7 can increase the strength between the second connecting part 3 and the main body 1 of the connecting casting, making it less likely for the second connecting part 3 to detach from the main body 1 of the connecting casting. The reinforcing ribs 7 can be designed above or below the second connecting part 3. The reinforcing ribs 7 are preferably designed below the second connecting part 3, so that the reinforcing ribs 7 are mainly subjected to tension. Figure 3 As shown, since the distance between the second connecting part 3 and the main body 1 of the connecting casting is too close, it is difficult to arrange the reinforcing rib 7. Therefore, the reinforcing rib 7 is designed above the second connecting part 3 and is mainly subjected to pressure. At this time, the width of the reinforcing rib 7 can be designed to be wider to facilitate pressure.

[0038] like Figure 7 As shown, multiple connecting ribs 8 are provided between the connecting arm 5 and the upper surface and / or the lower surface of the reinforcing plate 6 to improve the connection strength between the connecting arm 5 and the reinforcing plate 6 and to improve the service life of the reinforcing plate 6.

[0039] Although the disclosure is as stated above, the scope of protection of this disclosure is not limited thereto. Those skilled in the art can make various changes and modifications without departing from the spirit and scope of this disclosure, and all such changes and modifications will fall within the protection scope of this utility model.

Claims

1. An agricultural machine connection casting, characterized in that, include: A connecting casting body (1) has a first side (101) and a second side (102) opposite each other. A connecting arm (5) extends outward from the first side (101) of the connecting casting body (1); The first connecting part (2) is provided on the connecting arm (5); the first connecting part (2) has a first shaft hole (201); The second connecting part (3) is provided on the second side (102); the second connecting part (3) is provided with a second shaft hole (301); The first connecting part (2) and the second connecting part (3) are offset in the vertical direction; The main body (1) of the connecting casting is detachably connected to the parallelogram suspension mechanism (4), and the parallelogram suspension mechanism (4) is fixedly installed on the agricultural machinery; the parallelogram suspension mechanism (4) includes an upper connecting rod (401) and a lower connecting rod (402); the two ends of the upper connecting rod (401) are respectively hinged to the agricultural machinery and the first shaft hole (201); the two ends of the lower connecting rod (402) are respectively hinged to the agricultural machinery and the second shaft hole (301).

2. An agricultural implement attachment casting as claimed in claim 1, wherein, It also includes at least one reinforcing plate (6); the reinforcing plate (6) extends from the connecting casting body (1) to the connecting arm (5) and the second connecting part (3), respectively.

3. The agricultural machinery connecting casting according to claim 2, characterized in that, The connecting casting body (1) also includes a third side (103) and a fourth side (104) opposite to each other; there are two reinforcing plates (6), which are respectively located on the third side (103) and the fourth side (104) of the connecting casting body (1); the two reinforcing plates (6) are symmetrically arranged.

4. The agricultural machinery connecting casting according to claim 2, characterized in that, The reinforcing plate (6) has a first inclined portion (601) at one end near the first connecting portion (2); the reinforcing plate (6) has a second inclined portion (602) at one end near the second connecting portion (3); the widths of the first connecting portion (2) and the second connecting portion (3) are both greater than the width of the connecting casting body (1).

5. The agricultural machinery connecting casting according to claim 4, characterized in that, The reinforcing plate (6) has several through holes (603) on its surface along its extension direction.

6. The agricultural machinery connecting casting according to claim 4, characterized in that, Multiple connecting ribs (8) are provided between the connecting arm (5) and the upper surface of the reinforcing plate (6) and / or the lower surface of the reinforcing plate (6).

7. The agricultural machinery connecting casting according to claim 1, characterized in that, The connecting arm (5) is L-shaped; the bottom of the connecting arm (5) has an inclined surface structure (501); the two sides of the bottom of the connecting arm (5) protrude outward to form a connecting plate (502).

8. The agricultural machinery connecting casting according to claim 1, characterized in that, The main body (1) of the connecting casting is a rectangular tube structure; the top opening of the main body (1) is integrally formed with a U-shaped connecting block (105).

9. The agricultural machinery connecting casting according to claim 1, characterized in that, The second shaft hole (301) has annular grooves (302) at both ends.

10. An agricultural machinery connecting casting according to any one of claims 1-9, characterized in that, The first connecting part (2) and the second connecting part (3) are both horizontally arranged columnar structures; the second connecting part (3) is provided with a plurality of reinforcing ribs (7) along its axial direction, and the plurality of reinforcing ribs (7) are integrated with the second side (102) of the connecting casting body (1).

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