A hook for agricultural machinery

Abstract

This application discloses a hook for agricultural machinery, relating to the field of agricultural machinery equipment technology. The hook includes a hook body, a hook groove, a locking tongue disposed within the hook body, a lifting plate, and a spring. The lifting plate is rotatably connected to the locking tongue via a positioning pin and has a second positioning groove, which can be engaged and fixed with a hollow cylindrical positioning rod within the hook body, facilitating two-handed operation. The lower end of the locking tongue is engaged with the hollow cylindrical positioning rod via the first positioning groove. During hooking, lifting the lifting plate opens the locking tongue, inserting the connecting ball joint of the agricultural implement, and then releasing the lifting plate causes the spring to pull the locking tongue to automatically close and lock. This device is simple and quick to operate, provides reliable locking, effectively prevents accidental disengagement during operation, and is equipped with a dust cover, adapting to harsh farmland environments and significantly improving hooking efficiency and safety.

Description

Technical Field

[0001] This application relates to the field of agricultural machinery and equipment technology, specifically to a hook for agricultural machinery. Background Technology

[0002] In modern agricultural production, tractors and various agricultural implements (such as plows, harrows, seeders, and harvesters) need to be frequently attached and detached to adapt to different operational needs. Quick-connect hooks for agricultural machinery serve as a key connecting device, simplifying the attachment process and improving the utilization rate and operational efficiency of agricultural machinery. Traditional connection methods often use direct pin fixing, which is time-consuming, labor-intensive, and physically demanding on operators, making it difficult to meet the production pace of modern, high-efficiency agriculture.

[0003] To address these issues, various quick-hook devices have emerged on the market. These devices typically utilize movable locking blocks or latches on the hook body, working in conjunction with a control lever to achieve rapid locking and releasing of agricultural implements. For example, some existing quick-hook devices employ spring-loaded sliding blocks, with the movement of the sliding block controlled by pulling a lever, thus completing the hooking or unloading process. These designs improve the ease of hooking to some extent.

[0004] However, existing quick-hook devices still have many shortcomings. First, their locking mechanisms are often unstable, posing a risk of accidental disengagement when agricultural machinery is subjected to bumps and vibrations in the field, thus requiring improved safety. Second, the operation procedures of many products are still relatively cumbersome, and the switching between hooking and unhooking states is not intuitive or quick enough, failing to fully achieve the goal of "speed." Furthermore, some structures have poor dustproof performance, allowing dust from the farmland to easily enter the mechanism, causing problems such as parts jamming and spring failure, affecting its reliability and service life. Utility Model Content

[0005] This application provides a hook for agricultural machinery, which achieves the beneficial effects of simpler and faster operation, more stable and reliable connection, and stronger environmental adaptability, and can effectively solve the problems in the background technology.

[0006] To achieve the above objectives, this application provides the following technical solution: a hook for agricultural machinery, comprising a hook body, wherein a hook groove is provided on the outer side of the hook body; an installation groove is provided inside the hook body, wherein a locking tongue is provided inside the installation groove, the locking tongue is located at the upper right end of the hook groove, a spring is installed at the lower end of the inner side of the installation groove, and a lifting plate is provided inside the installation groove, wherein the lower end of the lifting plate is connected to the other end of the spring.

[0007] The lifting plate includes a plate body, and a positioning groove 2 is provided on the outer side of the plate body. A hollow cylindrical positioning rod 1 and a hollow cylindrical positioning rod 2 are arranged sequentially from top to bottom on the inner side of the mounting groove. The hollow cylindrical positioning rod 1 is engaged with the positioning groove 2.

[0008] The lifting plate is rotatably connected to the right end of the lock tongue via a positioning pin; the lock tongue includes a lock body, and a positioning groove 1 is provided on the lower end of the outer side of the lock body, which is engaged with the hollow cylindrical positioning rod 2.

[0009] Preferably, the spring is a tension spring.

[0010] Preferably, a pull ring is provided at the upper end of the outer side of the plate, and a dust cover is provided on the outer side of the plate near the pull ring, with the dust cover covering the opening at the upper end of the mounting groove.

[0011] Preferably, the lower end of the outer side of the plate is provided with a second positioning hole and a spring mounting hole, the spring mounting hole is connected to the end of the spring, and the positioning pin is set through the second positioning hole.

[0012] Preferably, a positioning hole is provided on the right end of the outer side of the lock body, and a positioning pin is provided through the positioning hole.

[0013] Preferably, the mounting groove is covered with a cover plate, and the cover plate is provided with multiple through holes, through which both the first hollow cylindrical positioning rod and the second hollow cylindrical positioning rod pass.

[0014] Preferably, the inner surfaces of both the first hollow cylindrical positioning rod and the second hollow cylindrical positioning rod are provided with connecting threads, and the capped screw passes through the first hollow cylindrical positioning rod and the second hollow cylindrical positioning rod to fix the cover plate to the hook body.

[0015] Preferably, both the first hollow cylindrical positioning rod and the second hollow cylindrical positioning rod are hollow rods with openings at both ends, and bolts pass through the first hollow cylindrical positioning rod and the second hollow cylindrical positioning rod to fix the cover plate to the hook body.

[0016] Preferably, the cover plate is provided with a detachable positioning pin, which passes through the mounting hole provided on the hook body, and the outer side of the detachable positioning pin is in close contact with the outer side of the locking tongue.

[0017] Preferably, the inner surface of the hook groove is a concave arc-shaped surface.

[0018] Compared with the prior art, the beneficial effects of this application are:

[0019] 1. This application uses a linkage design between the pull rod and the spring to make the process of attaching and unattaching agricultural implements extremely simple. Users only need to pull and release to complete all operations, eliminating the cumbersome hole alignment and pin insertion steps in the traditional method, significantly saving working time and manpower consumption, and greatly improving the attachment efficiency of agricultural implements.

[0020] 2. This application innovatively adopts a locking mechanism that combines a spring pin with the working hole and the unloading hole; after the agricultural implement is attached, the mechanism can automatically or through simple operation enter the locking state, effectively preventing accidental disengagement caused by vibration and bumps during complex field operations, and ensuring high stability and safety of the operation process.

[0021] 3. This application incorporates protective measures such as dust covers in its structure, which can effectively prevent dust, dirt and other impurities from entering the core irregular groove and the interior of the moving mechanism. This design reduces the risk of parts getting stuck or worn due to contamination, ensures the sensitivity and reliability of the mechanism during long-term operation, thereby extending the service life of the device and broadening its applicability in harsh farmland environments. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the structure of this application;

[0023] Figure 2 This is the main view of this application;

[0024] Figure 3 This is a front sectional view of this application;

[0025] Figure 4 This is a schematic diagram of the locking tongue structure;

[0026] Figure 5 This is a schematic diagram of the lifting plate structure;

[0027] Figure 6 This is a schematic diagram of the cover plate installation method in Example 1;

[0028] Figure 7 This is a schematic diagram of the cover plate installation method in Example 2.

[0029] In the diagram: 1 Hook body, 2 Hook groove, 3 Lock tongue, 31 Lock body, 32 Positioning groove one, 33 Positioning hole one, 4 Dustproof cover plate, 5 Lifting plate, 51 Pull ring, 52 Plate body, 53 Positioning hole two, 54 Spring mounting hole, 55 Positioning groove two, 6 Cover plate, 7 Removable positioning pin, 8 Hollow cylindrical positioning rod one, 9 Hollow cylindrical positioning rod two, 10 Spring, 11 Positioning pin. Detailed Implementation

[0030] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0031] In the description of this application, if directional descriptions are involved, such as "up," "down," "front," "back," "left," "right," etc., indicating directional or positional relationships, they are based on the appendix. Figure 2 The orientations or positional relationships shown are for the convenience of describing this application and simplifying the description only, and are not intended to 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 application. When a feature is referred to as "set", "fixed", or "connected" to another feature, it can be directly set, fixed, or connected to the other feature, or it can be indirectly set, fixed, or connected to the other feature.

[0032] Example 1, please refer to Figure 1-6 This application provides the following technical solution: a hook for agricultural machinery, including a hook body 1, with a hook groove 2 provided on the outer side of the hook body 1; the hook body 1 is connected to a locking tongue 3 through an installation groove provided inside it, the locking tongue 3 is located at the upper right end of the hook groove 2, a spring 10 is installed at the lower end of the inner side of the installation groove, a lifting plate 5 is provided inside the installation groove, and the lower end of the lifting plate 5 is connected to the other end of the spring 10.

[0033] Preferably, this design achieves rapid attachment and locking of agricultural implements through the linkage of hook body 1, locking tongue 3, and spring 10, resulting in a compact structure and simple operation. The bottom of the inner side of the hook groove 2 is an arc-shaped concave surface for docking with the connecting ball head. The locking tongue 3 automatically locks under the action of spring 10 to prevent disengagement and improve operational safety. The mounting groove integrates spring 10 and lifting plate 5, reducing the exposure of external parts and lowering the failure rate.

[0034] When it is necessary to attach agricultural implements, first lift the lifting plate 5, put the connecting ball head of the agricultural implement into the hook groove 2, release the lifting plate 5, and the locking tongue 3 will automatically close under the tension of the spring 10, locking the connecting ball head; when it is necessary to disassemble, the lifting plate 5 overcomes the force of the spring 10, pulls the locking tongue 3 to open, and the connecting ball head can be taken out.

[0035] The hook body 1 can be forged from high-strength steel, and the mounting groove is formed by milling. The spring 10 and the lifting plate 5 are pre-assembled and then embedded into the mounting groove to ensure a firm connection between the spring 10 and the lifting plate 5. The entire structure needs to be rust-proofed and surface-coated to extend its service life.

[0036] The lifting plate 5 includes a plate body 52. ​​The outer side of the plate body 52 is provided with a positioning groove 2 55. The inner side of the mounting groove is provided with a hollow cylindrical positioning rod 1 8 and a hollow cylindrical positioning rod 2 9 from top to bottom. The hollow cylindrical positioning rod 1 8 is engaged with the positioning groove 2 55.

[0037] Specifically, when the locking tongue 3 is opened to hang the device, the positioning groove 2 55 engages with the outer side of the hollow cylindrical positioning rod 1 8. At this point, the lifting plate 5 can be released, and its position remains unchanged. The user can then use both hands to install the agricultural implement to be hung. After the implement is hung, the user should hold the lifting plate 5 again to remove the positioning groove 2 55 from the hollow cylindrical positioning rod 1 8, and then release the lifting plate 5. Under the tension of the spring 10, the locking tongue 3 returns to its original position, completing the fixing of the hanger. The hollow cylindrical positioning rod 1 8 and the hollow cylindrical positioning rod 2 9 also serve a supporting and fixing function, improving the rigidity of the overall structure.

[0038] The lifting plate 5 is rotatably connected to the right end of the latch 3 via the positioning pin 11; the latch 3 includes a lock body 31, and the lower end of the outer side of the lock body 31 is provided with a positioning groove 32, which is engaged with the hollow cylindrical positioning rod 9.

[0039] Specifically, the positioning pin 11 connects the lifting plate 5 and the locking tongue 3, realizing lever-type transmission and making operation easier. The engagement between the positioning groove 32 and the hollow cylindrical positioning rod 9 ensures the stability of the locking tongue 3 in the closed state and prevents it from being accidentally opened due to vibration.

[0040] When the lifting plate 5 is pulled, the locking tongue 3 is driven to rotate around the hollow cylindrical positioning rod 9 through the positioning pin 11, thereby realizing the opening and closing of the locking tongue 3.

[0041] Furthermore, the spring 10 is a tension spring.

[0042] Specifically, the tension spring 10 provides continuous tension to ensure that the locking tongue 3 remains closed in the default state, enhancing the automatic locking function of the hook. The tension spring 10 has a simple structure, high reliability, and is not prone to fatigue.

[0043] Furthermore, a pull ring 51 is provided at the upper end of the outer side of the plate 52, and a dust cover 4 is provided on the outer side of the plate 52 near the pull ring 51, with the dust cover 4 covering the opening at the upper end of the mounting groove.

[0044] Specifically, the dust cover 4 is fixed to the plate 52, and the pull ring 51 is designed for easy manual operation, saving effort and being intuitive. The dust cover 4 can effectively prevent dust, dirt and other impurities from entering the mounting groove, protecting moving parts such as the spring 10 and the lifting plate 5, and extending their service life.

[0045] Furthermore, the lower end of the outer side of the plate 52 is provided with a positioning hole 2 53 and a spring mounting hole 54. The spring mounting hole 54 is connected to the end of the spring 10, and the positioning pin 11 is set through the positioning hole 2 53.

[0046] Specifically, positioning hole 53 is used to install positioning pin 11 to ensure the connection accuracy between lifting plate 5 and locking tongue 3; spring mounting hole 54 is specifically used to fix the end of spring 10 to prevent spring 10 from falling off or shifting.

[0047] Furthermore, a positioning hole 33 is provided on the right end of the outer side of the lock body 31, and the positioning pin 11 is set through the positioning hole 33.

[0048] Specifically, the positioning hole 33 and the positioning pin 11 cooperate to achieve a reliable rotational connection between the locking tongue 3 and the lifting plate 5, reducing the risk of wear and loosening. The positioning pin 11 passes through both the positioning hole 53 of the lifting plate 5 and the positioning hole 33 of the locking tongue 3, forming a hinge point.

[0049] Furthermore, the mounting groove is covered with a cover plate 6, which has multiple through holes through which the hollow cylindrical positioning rod 8 and the hollow cylindrical positioning rod 9 pass.

[0050] Specifically, the cover plate 6 protects the internal structure from external impacts and contamination, and the through-hole design allows the hollow cylindrical positioning rod 1 8 and the hollow cylindrical positioning rod 2 9 to pass through, which not only fixes the cover plate 6 but also enhances the overall structural strength.

[0051] Furthermore, the inner surfaces of the hollow cylindrical positioning rod 8 and the hollow cylindrical positioning rod 9 are provided with connecting threads, and the capped screws pass through the hollow cylindrical positioning rod 8 and the hollow cylindrical positioning rod 9 to fix the cover plate 6 to the hook body 1.

[0052] Specifically, the connecting threads and capped screws provide a secure fixing method, facilitate disassembly, and make it easy to maintain and replace internal parts. During installation, the capped screws are screwed into the threads of the hollow cylindrical positioning rod 8 and the hollow cylindrical positioning rod 9 to tighten the cover plate 6.

[0053] Furthermore, the cover plate 6 is provided with a detachable positioning pin 7, which passes through the mounting hole provided on the hook body 1, and the outer side of the detachable positioning pin 7 is in close contact with the outer side of the locking tongue 3.

[0054] Specifically, the removable locating pin 7 provides additional locking protection, preventing the latch 3 from accidentally opening in extreme situations and improving security. The removable design of the pin facilitates maintenance and adjustment. After the latch 3 is closed, inserting the removable locating pin 7 ensures it fits snugly against the latch 3, preventing rotation.

[0055] Example 2:

[0056] Please see Figure 1-5 The main difference between this embodiment and embodiment 1 is that the cover plate 6 in this embodiment is installed by bolts.

[0057] A hook for agricultural machinery includes a hook body 1, with a hook groove 2 on the outer side of the hook body 1; the hook body 1 is connected to a locking tongue 3 through an installation groove inside it, the locking tongue 3 is located at the upper right end of the hook groove 2, a spring 10 is installed at the lower end of the inner side of the installation groove, a lifting plate 5 is provided inside the installation groove, and the lower end of the lifting plate 5 is connected to the other end of the spring 10.

[0058] The hook body 1 can be forged from high-strength steel, and the mounting groove is formed by milling. The spring 10 and the lifting plate 5 are pre-assembled and then embedded into the mounting groove to ensure a firm connection between the spring 10 and the lifting plate 5. The entire structure needs to be rust-proofed and surface-coated to extend its service life.

[0059] The lifting plate 5 includes a plate body 52. ​​The outer side of the plate body 52 is provided with a positioning groove 2 55. The inner side of the mounting groove is provided with a hollow cylindrical positioning rod 1 8 and a hollow cylindrical positioning rod 2 9 from top to bottom. The hollow cylindrical positioning rod 1 8 is engaged with the positioning groove 2 55.

[0060] The lifting plate 5 is rotatably connected to the right end of the latch 3 via the positioning pin 11; the latch 3 includes a lock body 31, and the lower end of the outer side of the lock body 31 is provided with a positioning groove 32, which is engaged with the hollow cylindrical positioning rod 9.

[0061] When the lifting plate 5 is pulled, the locking tongue 3 is driven to rotate around the hollow cylindrical positioning rod 9 through the positioning pin 11, thereby realizing the opening and closing of the locking tongue 3.

[0062] Furthermore, the spring 10 is a tension spring.

[0063] Furthermore, a pull ring 51 is provided at the upper end of the outer side of the plate 52, and a dust cover 4 is provided on the outer side of the plate 52 near the pull ring 51, with the dust cover 4 covering the opening at the upper end of the mounting groove.

[0064] Furthermore, the lower end of the outer side of the plate 52 is provided with a positioning hole 2 53 and a spring mounting hole 54. The spring mounting hole 54 is connected to the end of the spring 10, and the positioning pin 11 is set through the positioning hole 2 53.

[0065] Furthermore, a positioning hole 33 is provided on the right end of the outer side of the lock body 31, and the positioning pin 11 is set through the positioning hole 33.

[0066] Furthermore, the mounting groove is covered with a cover plate 6, which has multiple through holes through which the hollow cylindrical positioning rod 8 and the hollow cylindrical positioning rod 9 pass.

[0067] The inner surfaces of the hollow cylindrical positioning rod 8 and the hollow cylindrical positioning rod 9 are provided with connecting threads. The capped screw passes through the hollow cylindrical positioning rod 8 and the hollow cylindrical positioning rod 9 to fix the cover plate 6 to the hook body 1.

[0068] Furthermore, the cover plate 6 is provided with a detachable positioning pin 7, which passes through the mounting hole provided on the hook body 1, and the outer side of the detachable positioning pin 7 is in close contact with the outer side of the locking tongue 3.

[0069] Furthermore, both the hollow cylindrical positioning rod 8 and the hollow cylindrical positioning rod 9 are hollow rods with openings at both ends. Bolts pass through the hollow cylindrical positioning rod 8 and the hollow cylindrical positioning rod 9 to fix the cover plate 6 to the hook body 1.

[0070] Specifically, the hollow rod design with openings at both ends allows bolts to pass through for fixing, resulting in more even stress distribution, high fixing strength, and suitability for heavy-duty conditions. Bolts are inserted from one side, passing through the hollow cylindrical positioning rod 8 or the hollow cylindrical positioning rod 9 and the cover plate 6, and tightened with a nut on the other side.

[0071] When using the equipment, hold the pull ring 51 on the lifting plate 5 and lift the lifting plate 5 upwards. The lifting plate 5 is connected to the locking tongue 3 through the positioning pin 11. The lifting action will overcome the tension of the spring 10, causing the locking tongue 3 to rotate around the hollow cylindrical positioning rod 9, thereby opening the locking tongue 3.

[0072] Engage the positioning groove 255 on the lifting plate into the hollow cylindrical positioning rod 8. This will keep the lifting plate open, freeing the user's hands and making it easier to align the connecting ball joint of the agricultural implement.

[0073] Place the connecting ball joint of the agricultural implement into the hook groove 2 of the hook body 1. The inner surface of the hook groove 2 is a concave arc surface, which facilitates the docking and positioning of the ball joint.

[0074] Then release the lifting plate 5. Under the pulling force of the spring 10, the locking tongue 3 will automatically reset and close at the upper right end of the hook groove 2, locking the connecting ball head and completing the hooking.

[0075] After the latch is closed, the removable positioning pin 7 on the cover plate 6 can be inserted to make it fit tightly against the latch, preventing the latch from opening accidentally and improving operational safety.

[0076] When unloading agricultural implements, hold the pull ring 51 on the lifting plate and lift the plate upwards to overcome the tension of the spring 10, causing the locking tongue 3 to rotate and open. If a detachable positioning pin 7 is used, it must be removed first. Once the locking tongue 3 is open, the connecting ball joint of the agricultural implement can be removed from the hook groove to complete the disassembly.

[0077] Although embodiments of this application have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A hook for agricultural machinery, comprising a hook body (1), wherein a hook groove (2) is provided on the outer side of the hook body (1); characterized in that: The hook body (1) has an installation groove inside, and a locking tongue (3) is provided inside the installation groove. The locking tongue (3) is located at the upper right end of the hook groove (2). A spring (10) is installed at the lower end of the inner side of the installation groove. A lifting plate (5) is provided inside the installation groove. The lower end of the lifting plate (5) is connected to the other end of the spring (10). The lifting plate (5) includes a plate body (52), and the outer side of the plate body (52) is provided with a positioning groove two (55). The inner side of the mounting groove is provided with a hollow cylindrical positioning rod one (8) and a hollow cylindrical positioning rod two (9) from top to bottom. The hollow cylindrical positioning rod one (8) is engaged with the positioning groove two (55) and is correspondingly set. The lifting plate (5) is rotatably connected to the right end of the latch (3) via the positioning pin (11); the latch (3) includes the lock body (31), and the lower end of the outer side of the lock body (31) is provided with a positioning groove (32), which is engaged with the hollow cylindrical positioning rod (9).

2. The agricultural machinery hook according to claim 1, characterized in that: The spring (10) is a tension spring.

3. The agricultural machinery hook according to claim 1, characterized in that: A pull ring (51) is provided on the upper part of the outer side of the plate (52), and a dust cover (4) is provided on the outer side of the plate (52) near the pull ring (51). The dust cover (4) covers the opening at the upper end of the mounting groove.

4. A hook for agricultural machinery according to claim 1 or 3, characterized in that: The lower end of the outer side of the plate (52) is provided with a positioning hole 2 (53) and a spring mounting hole (54). The spring mounting hole (54) is connected to the end of the spring (10), and the positioning pin (11) is set through the positioning hole 2 (53).

5. A hook for agricultural machinery according to claim 1, characterized in that: The right side of the outer surface of the lock body (31) is provided with a positioning hole (33), and the positioning pin (11) passes through the positioning hole (33).

6. The agricultural machinery hook according to claim 1, characterized in that: The mounting groove is covered with a cover plate (6), and the cover plate (6) is provided with multiple through holes. Hollow cylindrical positioning rod one (8) and hollow cylindrical positioning rod two (9) are both set through the through holes.

7. A hook for agricultural machinery according to claim 6, characterized in that: The inner surfaces of the hollow cylindrical positioning rod one (8) and the hollow cylindrical positioning rod two (9) are provided with connecting threads. The capped screw passes through the hollow cylindrical positioning rod one (8) and the hollow cylindrical positioning rod two (9) to fix the cover plate (6) on the hook body (1).

8. A hook for agricultural machinery according to claim 6, characterized in that: Both the hollow cylindrical positioning rod one (8) and the hollow cylindrical positioning rod two (9) are hollow rods with openings at both ends. Bolts pass through the hollow cylindrical positioning rod one (8) and the hollow cylindrical positioning rod two (9) to fix the cover plate (6) onto the hook body (1).

9. A hook for agricultural machinery according to claim 6, characterized in that: The cover plate (6) is provided with a detachable positioning pin (7), which passes through the mounting hole provided on the hook body (1) and the outer side of the detachable positioning pin (7) is in close contact with the outer side of the locking tongue (3).

10. A hook for agricultural machinery according to claim 1, characterized in that: The inner surface of the hook groove (2) is a concave arc-shaped surface.

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