Agricultural machine and hitching device therefor
By using the nested structure of the sleeve and the upper and lower hooks, along with the locking buckle design, the problem of loose ball joint connection is solved, achieving a stable connection between agricultural implements and tractors, and improving operational stability and precision.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HENAN RICHUANG GENERAL MACHINERY MFR
- Filing Date
- 2025-06-05
- Publication Date
- 2026-06-19
AI Technical Summary
The ball joint in the existing technology is prone to loosening under frequent turning and heavy-load operation, resulting in unstable connection between agricultural implements and tractors.
The design employs a nested structure of sleeve components and upper and lower hooks. Through the design of locking buckles and limit latches, it ensures that the upper and lower hooks are tightly connected, reducing relative movement and improving connection stability.
The tight connection between the sleeve and the attachment prevents the connection between the agricultural implement and the tractor from becoming loose, improving operational stability and precision, and reducing the failure rate.
Smart Images
Figure CN224368336U_ABST
Abstract
Description
Technical Field
[0001] This application belongs to the technical field of agricultural machinery and equipment, specifically relating to an agricultural machine and its mounting device. Background Technology
[0002] Agricultural machinery includes tractors and implements. Depending on the type of implements they carry, agricultural machinery can be divided into planting machinery, harvesting machinery, tillage machinery, etc. The connection between tractors and implements is achieved through a coupling device.
[0003] The existing attachment devices use ball joints. Under conditions of frequent turning, undulating terrain, and heavy-load operation, the ball joint connection between the ball joint and the ball joint seat may become loose, resulting in an unstable connection between the agricultural implement and the tractor. Utility Model Content
[0004] The purpose of this application is to provide an agricultural machinery and its mounting device to improve the stability of the connection between the agricultural implement and the tractor.
[0005] To achieve the above objectives, this application provides a mounting device for agricultural machinery, comprising:
[0006] Sleeve fittings are used to be fitted onto the connecting seats of agricultural machinery implements;
[0007] The lower hook has a lower hook groove and is used to connect to the tractor's suspension frame;
[0008] The upper hook is rotatably connected to the lower hook and can cover the opening of the lower hook groove to form a hook part nested outside the sleeve.
[0009] In some embodiments, the upper hook can rotate in the rotation locking direction to form the hooking part with the lower hook, and the upper hook can rotate in the rotation unlocking direction to separate from the lower hook. The hooking device also includes a locking buckle for applying a limiting force to the upper hook in the rotation locking direction.
[0010] In some embodiments, the locking buckle is rotatably connected to the lower hook, the locking buckle and the upper hook are rotatable in the same rotational plane, and the upper hook is located between the locking buckle and the lower hook along the rotational locking direction.
[0011] In some embodiments, the upper hook has a limiting slot on the side facing the locking buckle, and the locking buckle engages with the limiting slot.
[0012] In some embodiments, the limiting slot is provided with a magnet, and the locking buckle is an iron component.
[0013] In some embodiments, the free end of the upper hook has a snap-fit notch that engages with the tip of the lower hook.
[0014] In some embodiments, the sleeve has an annular cross-section, the upper hook has an upper hook groove, both the upper hook groove and the lower hook groove are arc-shaped grooves, the hook part is an annular hole, and the inner diameter of the hook part is equal to the outer diameter of the sleeve.
[0015] In some embodiments, the end of the sleeve is provided with an annular limiting plate, the outer diameter of which is larger than the inner diameter of the hook part.
[0016] In some embodiments, the central angle of the upper mounting groove ranges from 90° to 180°.
[0017] A specific embodiment of this application also provides an agricultural machine, including the attachment device for the agricultural machine as described above.
[0018] The agricultural machinery and its mounting device provided in this application have the following beneficial effects through the above technical solution:
[0019] Agricultural machinery includes implements and tractors connected by a coupling device. A sleeve is fitted onto the connector of the implement, and the lower hook is connected to the tractor's suspension frame. In this application, the sleeve is nested within the coupling portion formed by the upper and lower hooks. The tight connection between the sleeve and the coupling portion reduces relative movement between the implement and the tractor, thereby preventing loosening due to long-term impacts and improving the connection stability between the implement and the tractor.
[0020] Other features and advantages of the embodiments of this application will be described in detail in the following detailed description section. Attached Figure Description
[0021] The accompanying drawings are provided to further illustrate the embodiments of this application and form part of the specification. They are used together with the following detailed description to explain the embodiments of this application, but do not constitute a limitation on the embodiments of this application. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without any inventive effort. In the drawings:
[0022] Figure 1 This is an assembly diagram of the mounting device according to a specific embodiment of this application;
[0023] Figure 2 This is a structural schematic diagram of the hanging device (with sleeve) according to a specific embodiment of this application;
[0024] Figure 3This is a structural schematic diagram of the hanging device (without sleeve) according to a specific embodiment of this application;
[0025] Figure 4 This is a cross-sectional schematic diagram of the hanging device (without sleeve) according to a specific embodiment of this application;
[0026] Figure 5 This is a schematic diagram of the upper hook structure according to a specific embodiment of this application;
[0027] Figure 6 This is a schematic diagram of the locking buckle structure according to a specific embodiment of this application;
[0028] Figure 7 This is a schematic diagram of the structure of the lower hook according to a specific embodiment of this application.
[0029] Explanation of reference numerals in the attached figures
[0030] 100. Hanging device; 200. Connecting seat; 300. Suspension frame; 1. Sleeve; 2. Lower hook; 21. Lower hanging groove; 3. Upper hook; 31. Connecting part; 311. Positioning protrusion; 32. Hook part; 321. Inclined section; 322. Straight section; 33. Upper hanging groove; 4. Hanging part; 5. Locking buckle; 51. Positioning groove; 6. Limiting slot; 7. Snap-fit notch; 8. Annular limiting plate. Detailed Implementation
[0031] The specific embodiments of this application will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit this application.
[0032] The terminology of the agricultural machinery and its mounting device 100 according to this application is described below with reference to the accompanying drawings.
[0033] like Figure 1 and Figure 2 As shown, a specific embodiment of this application provides a mounting device 100 for agricultural machinery. The mounting device 100 includes a sleeve 1, a lower hook 2, and an upper hook 3. The sleeve 1 is used to be fitted onto the connecting seat 200 of the agricultural implement. The lower hook 2 has a lower mounting groove 21 and is used to connect with the suspension frame 300 of the tractor. The upper hook 3 is rotatably connected to the lower hook 2 and can cover the opening of the lower mounting groove 21 to form a mounting part 4 nested outside the sleeve 1.
[0034] Agricultural machinery includes implements and tractors. The sleeve 1 is fitted onto the connecting seat 200 of the implement. The lower hook 2 is connected to the suspension frame 300 of the tractor. The sleeve 1, the upper hook 3, and the lower hook 2 form a mating engagement 4. The inner peripheral wall of the engagement 4 is tightly connected to the outer peripheral wall of the sleeve 1, which plays a better limiting role, thereby reducing the relative movement between the implement and the tractor, thus avoiding long-term mutual impact that could lead to loosening of the connection, and improving the stability of the connection between the implement and the tractor.
[0035] It should be noted that, in the specific embodiments of this application, unless otherwise stated, the terms "upper," "lower," "left," "right," "front," "rear," "inner," and "outer," etc., indicating orientation or positional relationships, are only for the convenience of describing this application 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 this disclosure. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.
[0036] For ease of description, in a specific embodiment of this application, the agricultural implement is located behind the tractor. The front end of the lower hook 2 is connected to the tractor's suspension frame 300. The slot 21 of the lower hook 2 faces upward. The front end of the upper hook 3 is rotatably connected to the front end of the lower hook 2. The rotation plane of the upper hook 3 is perpendicular to a straight line extending in the left-right direction. The axis of the sleeve 1 extends in the left-right direction. The specific positions of "upper," "lower," "left," "right," "front," and "rear" are shown by the arrows in the accompanying drawings.
[0037] like Figure 3 and Figure 4 As shown in the specific embodiment of this application, the upper hook 3 can rotate in the rotation locking direction to form a hooking part 4 with the lower hook 2, and the upper hook 3 can rotate in the rotation unlocking direction to separate from the lower hook 2. The hooking device 100 also includes a locking buckle 5 for applying a limiting force in the rotation locking direction to the upper hook 3.
[0038] It should be noted that the rotation locking direction refers to the direction in which the free end of the upper hook 3 rotates closer to the rear end of the lower hook 2, and the rotation unlocking direction refers to the direction in which the free end of the upper hook 3 rotates away from the rear end of the lower hook 2. The specific directions are shown by the arrows in the attached diagram of the instruction manual.
[0039] Specifically, the locking buckle 5 is rotatably connected to the lower hook 2, and the locking buckle 5 and the upper hook 3 can rotate in the same rotational plane. The upper hook 3 is located between the locking buckle 5 and the lower hook 2 along the rotational locking direction. The upper hook 3 can rotate along the rotational locking direction to be above the lower hook 2 and close the slot of the lower hooking groove 21 to form a closed hooking part 4. At the same time, the locking buckle 5 presses the upper hook 3 to strengthen the connection between the upper hook 3 and the lower hook 2, thereby preventing the upper hook 3 and the lower hook 2 from separating during use, and thus improving the stability of the connection between the agricultural implement and the tractor.
[0040] like Figure 5 and Figure 6 As shown in the specific embodiment of this application, a limiting slot 6 is formed on the side of the upper hook 3 facing the locking buckle 5. The locking buckle 5 and the limiting slot 6 are engaged and cooperated. It can be seen that the locking buckle 5 and the upper hook 3 can fit tightly together, so that the upper hook 3 is tightly connected to the lower hook 2 under the gravity of the locking buckle 5, thereby avoiding the separation of the upper hook 3 and the lower hook 2 due to bumps during operation, and thus improving the stability of the connection between the agricultural implement and the tractor.
[0041] Specifically, the upper hook 3 includes a connecting part 31 and a hook part 32. One end of the connecting part 31 is rotatably connected to the lower hook 2, and the other end is connected to the hook part 32. The front end of the hook part 32 includes a straight section 322 and an inclined section 321. The angle between the straight section 322 and the inclined section 321 is an obtuse angle. The rear end of the connecting part 31 is connected to the straight section 322. The inclined section 321 and the top surface of the connecting part 31 form a limiting slot 6. The angle between the inclined section 321 and the top surface of the connecting part 31 is an obtuse angle. When the connecting part 31 is rotated to a horizontal state, the hook part 32 and the lower hook 2 form a hooking part 4.
[0042] The connection between the locking buckle 5 and the lower hook 2 is located above and in front of the connection between the connecting part 31 and the lower hook 2. When the connecting part 31 rotates to a horizontal position and the locking buckle 5 rotates to a horizontal position, the locking buckle 5 engages with the limiting slot 6, the end face of the free end of the locking buckle 5 is in contact with the inclined section 321, and the bottom surface of the locking buckle 5 is in contact with the top surface of the connecting part 31. By setting the inclined section 321, the locking buckle 5 can apply a limiting force to the upper hook 3 in the direction of rotational locking.
[0043] Furthermore, a positioning protrusion 311 is formed on the top surface of the connecting part 31, and a positioning groove 51 is formed on the bottom surface of the locking buckle 5, so as to increase the part of the locking buckle 5 that applies a limiting force to the upper hook 3, thereby preventing the upper hook 3 from separating from the lower hook 2 due to bumps during operation, and thus improving the stability of the connection between the agricultural implement and the tractor.
[0044] Furthermore, a magnet is provided inside the limiting latch 6, and the locking buckle 5 is made of iron to strengthen the tight fit between the locking buckle 5 and the upper hook 3, thereby preventing the upper hook 3 from separating from the lower hook 2 due to bumps during operation, and thus improving the stability of the connection between the agricultural implement and the tractor.
[0045] like Figure 5 and Figure 7 As shown in the specific embodiment of this application, the rear end of the lower hook 2 is a pointed tip, and the free end of the upper hook 3 is formed with a snap-fit notch 7. The snap-fit notch 7 and the pointed tip of the lower hook 2 are engaged to form an interlocking structure, so as to strengthen the connection between the upper hook 3 and the lower hook 2, thereby avoiding the separation of the upper hook 3 and the lower hook 2 due to bumps during operation, and thus improving the stability of the connection between the agricultural implement and the tractor.
[0046] like Figures 1 to 3 As shown in the specific embodiment of this application, the cross-section of the sleeve 1 is annular, the upper hook 3 has an upper hook groove 33, both the upper hook groove 33 and the lower hook groove 21 are arc-shaped grooves, the hook part 4 is an annular hole, and the inner peripheral wall of the annular hole can fit with the outer peripheral wall of the sleeve 1.
[0047] Specifically, the connecting seat 200 of the agricultural implement includes a seat plate and a connecting shaft. The hook part 4, the sleeve 1 and the connecting shaft are nested from the outside to the inside. In other words, by tightly fitting the inner peripheral wall of the sleeve 1 with the outer peripheral wall of the connecting shaft and the inner peripheral wall of the hook part 4 with the outer peripheral wall of the sleeve 1, the swing amplitude of the agricultural implement during operation is reduced, thereby avoiding loosening of the connection between the agricultural implement and the tractor and improving the operating accuracy of the agricultural machinery, thus improving the connection stability between the agricultural implement and the tractor and the operating stability of the agricultural machinery.
[0048] At the same time, the tightness between the hook part 4, the sleeve part 1 and the connecting seat 200 is improved so that the overall structure of the hook device 100 is simplified and compact, and the failure rate is low.
[0049] Furthermore, both the left and right ends of the sleeve 1 are provided with annular limiting plates 8. The inner diameter of the annular limiting plate 8 is equal to the inner diameter of the sleeve 1, and the outer diameter of the annular limiting plate 8 is greater than the inner diameter of the hook part 4. In other words, the annular limiting plate 8 and the hook part 4 are matched in a limiting manner in the left and right direction. It can be seen that the hook part 4 can restrict the movement of the sleeve 1 in the left and right direction, so as to restrict the swaying between the agricultural implement and the tractor in the left and right direction, thereby avoiding the loosening of the connection between the agricultural implement and the tractor and avoiding the improvement of the operating accuracy of the agricultural machinery, thereby improving the connection stability between the agricultural implement and the tractor and the operating stability of the agricultural machinery.
[0050] like Figure 5As shown in the specific embodiment of this application, the central angle of the upper hook groove 33 is in the range of 90°~180°, so that the free end of the upper hook 3 and the rear end of the lower hook 2 have sufficient hooking area, while reducing the hooking components, thereby ensuring the convenience and stability of the hooking process. The central angle of the upper hook groove 33 is preferably 125°.
[0051] In specific embodiments of this application, the sleeve 1 has various specifications, and the inner diameter of the sleeve 1 of different specifications is different. The connecting shaft of the connecting seat 200 of different agricultural implements has different outer diameters. By setting sleeves 1 with different inner diameters, it is suitable for attaching different agricultural implements and tractors, thereby improving the adaptability of the attachment device 100.
[0052] Specific embodiments of this application also provide an agricultural machine, including an attachment device 100, implements, and a tractor. Since the agricultural machine employs all embodiments of the attachment device 100, it possesses all the beneficial effects of the attachment device 100.
[0053] In the description of this application, it should be understood that 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. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.
[0054] In this application, unless otherwise expressly 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, an electrical connection, or a connection that allows communication between components; 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, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.
[0055] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this application. 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. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.
[0056] Although embodiments of this application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting this application. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of this application.
Claims
1. An attachment device for an agricultural machine, characterized in that include: Sleeve component (1), used to be fitted onto the connecting seat (200) of agricultural implements; The lower hook (2) has a lower hook groove (21) and is used to connect with the tractor's suspension frame (300); and The upper hook (3) is rotatably connected to the lower hook (2) and can cover the opening of the lower hook groove (21) to form a hook part (4) nested outside the sleeve (1).
2. The hitch of an agricultural machine according to claim 1, characterized in that The upper hook (3) can rotate in the rotation locking direction to form the hooking part (4) with the lower hook (2), and the upper hook (3) can rotate in the rotation unlocking direction to separate from the lower hook (2). The hooking device (100) also includes a locking buckle (5) for applying a limiting force in the rotation locking direction to the upper hook (3).
3. The hitch of an agricultural machine according to claim 2, characterized in that The locking buckle (5) is rotatably connected to the lower hook (2), the locking buckle (5) and the upper hook (3) can rotate in the same rotation plane, and the upper hook (3) is located between the locking buckle (5) and the lower hook (2) along the rotation locking direction.
4. The hitch of an agricultural machine according to claim 3, characterized in that The upper hook (3) forms a limiting slot (6) on the side facing the locking buckle (5), and the locking buckle (5) engages with the limiting slot (6).
5. The hitch of an agricultural machine according to claim 4, characterized in that The limiting slot (6) is equipped with a magnet, and the locking buckle (5) is an iron component.
6. The hitch assembly of claim 1, wherein, The free end of the upper hook (3) is formed with a snap-fit notch (7), which engages with the tip of the lower hook (2).
7. The hitch assembly of claim 1, wherein, The sleeve (1) has an annular cross-section. The upper hook (3) has an upper hook groove (33). Both the upper hook groove (33) and the lower hook groove (21) are arc-shaped grooves. The hook part (4) is an annular hole. The inner diameter of the hook part (4) is equal to the outer diameter of the sleeve (1).
8. The hitch of an agricultural machine according to claim 7, characterized in that The sleeve (1) is provided with an annular limiting plate (8) at its end, and the outer diameter of the annular limiting plate (8) is larger than the inner diameter of the hook part (4).
9. The hitch of an agricultural machine according to claim 7, characterized in that The central angle of the upper hanging groove (33) ranges from 90° to 180°.
10. An agricultural machine characterized by, Includes the attachment device (100) for agricultural machinery according to any one of claims 1 to 9.