Hinge-mounted agricultural implement
The snap-fit component design enables convenient installation and disassembly of universal joints for articulated agricultural implements, solving the problem of complex and time-consuming traditional replacement methods and improving operational efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HUNAN MAIQI TECH CO LTD
- Filing Date
- 2025-05-08
- Publication Date
- 2026-05-19
AI Technical Summary
The universal joints of existing articulated agricultural implements are prone to wear or breakage. Traditional replacement methods are complicated and time-consuming, affecting the efficiency of field operations, especially delaying work during the busy farming season.
The universal joint is fixed to the connecting arm by plugging and snapping, avoiding the need to weld or remove multiple bolts. It can be easily installed and removed by using plugs, pin holes, guide rods, compression springs and snap pins.
It significantly improves the efficiency of universal joint assembly and disassembly, shortens the maintenance cycle, and is suitable for efficient maintenance during the busy farming season.
Smart Images

Figure CN224250183U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of agricultural machinery technology, specifically to a hinged agricultural implement. Background Technology
[0002] Articulated agricultural implements are agricultural implements that connect to tractors or other power machinery through articulation mechanisms such as universal joints. They have the ability to steer flexibly and adapt to terrain, and are widely used in equipment such as plows and seeders.
[0003] Because agricultural machinery is subjected to large impact loads and vibrations during operation, universal joints are prone to wear or breakage and need to be replaced frequently. Some agricultural machinery has the universal joint directly welded to the connecting arm. When replacing it, it needs to be cut and re-welded, which is not only complicated to operate, but also damages the connection structure and reduces the overall strength. The traditional method requires the removal of multiple bolts or welding operations each time the universal joint is replaced, which is time-consuming and seriously affects the efficiency of field operations. Especially during the busy farming season, when work is delayed, maintenance personnel often need to spend more time and manpower due to the difficulty of disassembly.
[0004] In the prior art, for this purpose, we propose a hinged installation method for agricultural implements. Utility Model Content
[0005] (a) Technical problems to be solved
[0006] In view of the shortcomings of the prior art, this utility model provides a hinged installation for agricultural machinery, which makes the universal joint easy to assemble and disassemble, improves maintenance efficiency, and can effectively solve the problems in the background art.
[0007] (II) Technical Solution
[0008] To achieve the above objectives, the technical solution adopted by this utility model is as follows: a hinged agricultural implement, including a plow, a first connecting arm fixedly installed on the outer surface of one end of the plow, a second connecting arm provided at one end of the first connecting arm, a universal joint provided between the first connecting arm and the second connecting arm, and snap-fit components fixedly installed on the outer surfaces of both ends of the universal joint, the snap-fit components including a plug, a pin hole, a mounting hole, a guide rod, a compression spring, a snap-fit pin and a guide hole, and slots are opened on the upper outer surfaces of the first connecting arm and the second connecting arm near the universal joint, and snap-fit holes are opened on one side of the outer surfaces of the first connecting arm and the second connecting arm near the universal joint, and limit pins are fixedly installed on the left and right sides of the bottom of the slot.
[0009] Preferably, there are two sets of snap-fit components, in which the insert blocks are fixedly installed on the outer surfaces of both ends of the universal joint, and the outer wall of the insert block is inserted into the slot.
[0010] Preferably, the number of pin holes in a set of the snap-fit assembly is two sets, and the two sets of pin holes are opened on the left and right sides of the lower outer surface of the insert block. When the insert block is inserted into the slot, the limiting pin passes through the pin hole.
[0011] Preferably, the mounting hole is located in the middle of the outer surface of one side of the insert block, the guide rod and the compression spring are both located in the mounting hole, the guide hole is located on the outer surface of one end of the locking pin, the outer surface of one end of the guide rod is fixedly connected to the middle of one end of the mounting hole, the compression spring is movably sleeved on the outer wall of the guide rod, the outer surface of one end of the compression spring is fixedly connected to one end of the mounting hole, and the outer surface of the other end of the compression spring is fixedly connected to the outer surface of one end of the locking pin.
[0012] Preferably, the outer wall of the locking pin is slidably connected to the mounting hole, and the locking pin is slidably connected to the outer wall of the guide rod through the guide hole.
[0013] Preferably, the locking pin is slidably connected to the outer wall of the guide rod through the guide hole, and the outer wall of one end of the locking pin is locked to the locking hole.
[0014] (III) Beneficial Effects
[0015] Compared with the prior art, this utility model provides a hinged agricultural implement, which has the following advantages:
[0016] 1. This type of articulated agricultural implement uses a snap-fit assembly design to fix the universal joint and connecting arm by plugging and snapping, eliminating the need for welding or disassembling multiple bolts, which significantly improves the efficiency of assembly and disassembly and saves operating time.
[0017] 2. This type of hinged agricultural implement features a snap-fit assembly structure that makes the replacement of the universal joint more convenient. Maintenance personnel can complete the disassembly simply by squeezing the snap-fit pin, avoiding the cumbersome operation of traditional welding or bolt fixing, greatly shortening the maintenance cycle, and making it especially suitable for efficient maintenance during the busy farming season. Attached Figure Description
[0018] Figure 1 This is a schematic diagram of the overall structure of a hinged agricultural implement according to the present invention.
[0019] Figure 2 This is a side view of a universal joint and snap-fit assembly in a hinged agricultural implement according to the present invention.
[0020] Figure 3 This is a schematic diagram of the structure of the first connecting arm in a hinged agricultural implement according to the present invention.
[0021] Figure 4 This is a top cross-sectional view of a snap-fit assembly in a hinged agricultural implement according to the present invention.
[0022] In the diagram: 1. Plow; 2. First connecting arm; 3. Second connecting arm; 4. Universal joint; 5. Snap-fit assembly; 6. Slot; 7. Limit pin; 8. Snap-fit hole; 9. Insert block; 10. Pin hole; 11. Mounting hole; 12. Guide rod; 13. Compression spring; 14. Snap-fit pin; 15. Guide hole. Detailed Implementation
[0023] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.
[0024] This embodiment is a hinged agricultural implement.
[0025] like Figure 1-4 As shown, the device includes a plow 1. A first connecting arm 2 is fixedly installed on the outer surface of one end of the plow 1. A second connecting arm 3 is provided at one end of the first connecting arm 2. A universal joint 4 is provided between the first connecting arm 2 and the second connecting arm 3. A snap-fit assembly 5 is fixedly installed on the outer surfaces of both ends of the universal joint 4. The snap-fit assembly 5 includes a plug 9, a pin hole 10, a mounting hole 11, a guide rod 12, a compression spring 13, a snap-fit pin 14, and a guide hole 15. A slot 6 is provided on the upper outer surface of the first connecting arm 2 and the second connecting arm 3 near the end of the universal joint 4. A snap-fit hole 8 is provided on one side of the outer surface of the first connecting arm 2 and the second connecting arm 3 near the end of the universal joint 4. Limit pins 7 are fixedly installed on the left and right sides of the bottom of the slot 6.
[0026] There are two sets of snap-fit components 5. In both sets of snap-fit components 5, the insert blocks 9 are fixedly installed on the outer surfaces of both ends of the universal joint 4, and the outer wall of the insert block 9 is inserted into the slot 6. There are two sets of pin holes 10 in each set of snap-fit components 5. The two sets of pin holes 10 are opened on the left and right sides of the lower outer surface of the insert block 9. When the insert block 9 is inserted into the slot 6, the limiting pin 7 passes through the pin hole 10. The mounting hole 11 is opened in the middle of one side of the outer surface of the insert block 9. The guide rod 12 and the compression spring 13 are both located in the mounting hole 11. The guide hole 15 is opened on one end of the outer surface of the snap-fit pin 14. The outer surface of the guide rod 12 is fixedly connected to the middle of one end of the mounting hole 11. The compression spring 13 is movably sleeved on the outer wall of the guide rod 12. The outer surface of one end of the compression spring 13 is fixedly connected to one end of the mounting hole 11, and the outer surface of the other end of the compression spring 13 is fixedly connected to the outer surface of one end of the snap-fit pin 14. The outer wall of the snap-fit pin 14 is slidably connected to the mounting hole 11. The snap-fit pin 14 is slidably connected to the outer wall of the guide rod 12 through the guide hole 15. The outer wall of one end of the snap-fit pin 14 is snapped into the snap-fit hole 8.
[0027] It should be noted that this utility model is a hinged agricultural implement, equipped with a universal joint 4. The universal joint 4 connects the first connecting arm 2 and the second connecting arm 3. The second connecting arm 3 is externally connected to the tractor. When installing the universal joint 4, the locking pin 14 in the locking assembly 5 is pressed. The locking pin 14 slides along the guide rod 12 through the guide hole 15, causing the locking pin 14 to press against the compression spring 13 along the mounting hole 11, so that one end of the locking pin 14 enters the mounting hole 11. Then insert the plug 9 into the slot 6, so that the limiting pin 7 passes through the pin hole 10. When the locking pin 14 reaches one end of the locking hole 8, the reaction force of the compression spring 13 drives one end of the locking pin 14 to lock into the locking hole 8, thus realizing installation and facilitating disassembly. When disassembling, squeeze the locking pin 14 locked in the locking hole 8 to separate the locking pin 14 from the locking hole 8. Then the plug 9 can be pulled out from the slot 6 to realize disassembly, improving the efficiency of disassembly and maintenance.
[0028] It should be noted that, in this document, relational terms such as first and second (number one, number two), etc., are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.
[0029] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.
Claims
1. A hinged agricultural implement, comprising a plow (1), characterized in that: A first connecting arm (2) is fixedly installed on the outer surface of one end of the plow (1). A second connecting arm (3) is provided at one end of the first connecting arm (2). A universal joint (4) is provided between the first connecting arm (2) and the second connecting arm (3). A snap-fit assembly (5) is fixedly installed on the outer surfaces of both ends of the universal joint (4). The snap-fit assembly (5) includes a plug (9), a pin hole (10), a mounting hole (11), a guide rod (12), a compression spring (13), a snap-fit pin (14), and a guide hole (15). A slot (6) is opened on the upper outer surface of the first connecting arm (2) and the second connecting arm (3) near the end of the universal joint (4). A snap-fit hole (8) is opened on one side of the outer surface of the first connecting arm (2) and the second connecting arm (3) near the end of the universal joint (4). Limit pins (7) are fixedly installed on the left and right sides of the bottom of the slot (6).
2. The hinged agricultural implement according to claim 1, characterized in that: The number of the snap-fit components (5) is two sets. In the two sets of snap-fit components (5), the plug (9) is fixedly installed on the outer surfaces of both ends of the universal joint (4). The outer wall of the plug (9) is plugged into the slot (6).
3. The hinged agricultural implement according to claim 2, characterized in that: The number of pin holes (10) in a set of the snap-fit assembly (5) is two sets. The two sets of pin holes (10) are opened on the left and right sides of the lower outer surface of the insert (9). When the insert (9) is inserted into the slot (6), the limiting pin (7) passes through the pin hole (10).
4. The hinged agricultural implement according to claim 3, characterized in that: The mounting hole (11) is located in the middle of the outer surface of one side of the insert (9). The guide rod (12) and the compression spring (13) are both located in the mounting hole (11). The guide hole (15) is located on the outer surface of one end of the snap-fit pin (14). The outer surface of one end of the guide rod (12) is fixedly connected to the middle of one end of the mounting hole (11). The compression spring (13) is movably sleeved on the outer wall of the guide rod (12). The outer surface of one end of the compression spring (13) is fixedly connected to one end of the mounting hole (11). The outer surface of the other end of the compression spring (13) is fixedly connected to the outer surface of one end of the snap-fit pin (14).
5. A hinged agricultural implement according to claim 4, characterized in that: The outer wall of the snap-fit pin (14) is slidably connected to the mounting hole (11), and the snap-fit pin (14) is slidably connected to the outer wall of the guide rod (12) through the guide hole (15).
6. A hinged agricultural implement according to claim 5, characterized in that: The locking pin (14) is slidably connected to the outer wall of the guide rod (12) through the guide hole (15), and the outer wall of one end of the locking pin (14) is locked to the locking hole (8).