Falling-free pin for bin cover of seeding bin
The insertion rod and lever structure, which combines a limit seat and a return spring, solves the problems of cumbersome and easily lost fixing of traditional seeding bin covers, achieving convenient and reliable fixing of the bin cover and simplifying the operation process.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-05-08
- Publication Date
- 2026-04-14
AI Technical Summary
Traditional seeding bin covers are secured with pins, which is cumbersome and easily lost, leading to inconvenience in operation and failure of the locking mechanism.
The device employs a limit seat, socket, and reset spring structure. Through the cooperation of the insertion rod, the first lever, the second lever, and the third lever, it achieves automatic insertion and fixing of the compartment cover, simplifying the operation process.
It enables convenient opening and closing of the bin cover and reliable fixing, avoids the problem of lost pins, and improves operational efficiency and reliability.
Smart Images

Figure CN224120082U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of agricultural machinery and equipment technology, specifically to a seeding bin cover that is detachable. Background Technology
[0002] As a core component of agricultural seeding equipment, the reliable fixing of the seed bin lid is crucial for seed storage, moisture protection, and operational safety. Currently, traditional seed bin lids generally use pins as fixing components, which are locked by inserting the pins into the corresponding pin holes in the bin body and lid.
[0003] However, this method has significant drawbacks: when adding seeds, the pin needs to be pulled out, and then inserted again after the seeds are added, which is quite cumbersome; in addition, the pin, as an independent small part, lacks an effective storage structure and is easily lost after disassembly, causing the lid to fail to close properly.
[0004] Therefore, it is necessary to propose a seeding bin cover that does not require pins to be removed in order to solve the above problems. Utility Model Content
[0005] (a) Technical problems to be solved
[0006] The purpose of this invention is to provide a seeding bin cover that does not require the pin to come off, in order to solve the problems mentioned in the background art.
[0007] (II) Technical Solution
[0008] To achieve the above objectives, this utility model is implemented through the following technical solution: a seeding bin cover without pin removal, comprising a limiting seat and a socket, wherein a plug rod is slidably connected inside the limiting seat, and the socket is provided with a plug hole adapted to the plug rod, wherein a first lever and a second lever are fixedly connected at intervals on the outer side of the plug rod, a limiting groove is provided in the middle of the limiting seat, and a limiting groove for limiting the second lever is provided at the end of the limiting groove away from the socket;
[0009] The first lever is located on the side of the second lever near the socket. A third lever is fixedly connected to the outside of the socket. The third lever is used to move the first lever so that the second lever is disengaged from the limiting groove.
[0010] A return spring is fitted on the outer side of the insertion rod, and the return spring is used to push the insertion rod into the insertion hole.
[0011] Preferably, the insert rod, the first lever, and the second lever are perpendicular to each other in pairs.
[0012] Preferably, a spring groove is provided on the inner side of the limiting seat, and the reset spring is located inside the spring groove.
[0013] Preferably, the return spring is located on the side of the second lever away from the socket.
[0014] Preferably, the cover is hinged to the seeding chamber, the limiting seat is fixedly connected to the seeding chamber, the socket is fixedly connected to the cover, and the cover is hinged to the seeding chamber.
[0015] Preferably, a fixing plate is fixedly connected to one side of the limiting seat, and a strip-shaped hole is formed on the fixing plate along the axial direction of the insertion rod.
[0016] Preferably, both the end of the insertion rod and the end of the insertion hole are provided with guide slopes.
[0017] (III) Beneficial Effects
[0018] Compared with the prior art, this utility model provides a seeding bin cover that does not require the pin to come off, and has the following beneficial effects:
[0019] The seeding bin cover is designed to be pinless. By setting a first lever, a second lever, and a return spring on the insertion rod, and with the cooperation of a third lever, it automatically inserts and fixes itself when the bin cover is closed, making it more convenient to use. At the same time, its structure is simple and reliable. Attached Figure Description
[0020] Figure 1 This is a three-dimensional schematic diagram of the structure of this utility model;
[0021] Figure 2 This is a cross-sectional schematic diagram of the structure of this utility model;
[0022] Figure 3 This is a front view schematic diagram of the structure of this utility model;
[0023] Figure 4 This is a schematic diagram of the structure of this utility model in use.
[0024] In the diagram: 1. Insert rod; 2. First lever; 3. Limiting groove; 4. Fixing plate; 5. Limiting groove; 6. Second lever; 7. Strip hole; 8. Limiting seat; 9. Spring groove; 10. Return spring; 11. Socket; 12. Insertion hole; 13. Third lever; 14. Cover; 15. Seeding chamber. Detailed Implementation
[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.
[0026] Please see Figure 1-4As shown, a seeding bin cover without a detachable pin includes a limiting seat 8 and a socket 11. A rod 1 is slidably connected inside the limiting seat 8. The socket 11 has a socket 12 that matches the rod 1. A first lever 2 and a second lever 6 are fixedly connected at intervals to the outer side of the rod 1. A limiting groove 3 is provided in the middle of the limiting seat 8. A limiting groove 5 for limiting the second lever 6 is provided at the end of the limiting groove 3 away from the socket 11. The first lever 2 is located on the side of the second lever 6 closer to the socket 11. A third lever 13 is fixedly connected to the outer side of the socket 11. The third lever 13 is used to move the first lever 2 to disengage the second lever 6 from the limiting groove 5. A return spring 10 is sleeved on the outer side of the rod 1. The return spring 10 is used to push the rod 1 into the socket 12.
[0027] During installation, the limiting seat 8 is fixedly connected to the side of the seeding chamber 15 away from the hinge point, and the socket 11 is fixedly connected to the side of the chamber cover 14 away from the hinge point, ensuring that the insertion rod 1 can be inserted into the insertion hole 12 when the chamber cover 14 is closed.
[0028] When opening the compartment cover 14, the second lever 6 slides the insertion rod 1, causing the insertion rod 1 to slide out of the insertion hole 12. The return spring 10 is compressed by force. Then, the compartment cover 14 is rotated to open, and the second lever 6 is rotated upward to lock the second lever 6 into the limiting groove 5. When closing the compartment cover 14, the first lever 2 drives the insertion rod 1 to rotate under the action of the third lever 13, causing the second lever 6 to rotate and disengage from the limiting groove 5. The return spring 10 pushes the second lever 6 to slide along the limiting slide groove 3, so that the insertion rod 1 is inserted into the insertion hole 12, thereby fixing the compartment cover 14.
[0029] Specifically, the insertion rod 1, the first lever 2, and the second lever 6 are perpendicular to each other in pairs.
[0030] In some embodiments, a spring groove 9 is provided on the inner side of the limiting seat 8, and the return spring 10 is located inside the spring groove 9. The spring groove 9 protects the return spring 10 and prevents debris from affecting its extension and contraction. Specifically, the return spring 10 is located on the side of the second lever 6 away from the socket 11. One end of the return spring 10 acts on the groove wall of the spring groove 9, and the other end of the return spring 10 acts on the second lever 6.
[0031] To facilitate the installation and fixation of the limiting seat 8, a fixing plate 4 is fixedly connected to one side of the limiting seat 8. A strip hole 7 is provided on the fixing plate 4 along the axial direction of the insertion rod 1. During installation, bolts are passed through the strip hole 7 and fixedly connected to the seeding chamber 15. The strip hole 7 is provided to adjust the distance between the limiting seat 8 and the socket 11 when installing the limiting seat 8.
[0032] To ensure that the insertion rod 1 can be smoothly inserted into the insertion hole 12, both the end of the insertion rod 1 and the end of the insertion hole 12 are provided with guide slopes.
[0033] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A seeding bin cover without a detachable pin, comprising a limiting seat (8) and a socket (11), wherein a plug rod (1) is slidably connected inside the limiting seat (8), and the socket (11) has a plug hole (12) adapted to the plug rod (1), characterized in that: The outer side of the plug (1) is fixedly connected with a first lever (2) and a second lever (6) at intervals. A limiting groove (3) is opened in the middle of the limiting seat (8). A limiting groove (5) for limiting the second lever (6) is opened at the end of the limiting groove (3) away from the socket (11). The first lever (2) is located on the side of the second lever (6) near the socket (11). A third lever (13) is fixedly connected to the outside of the socket (11). The third lever (13) is used to move the first lever (2) so that the second lever (6) is disengaged from the limiting groove (5). A return spring (10) is sleeved on the outside of the insertion rod (1), and the return spring (10) is used to push the insertion rod (1) into the insertion hole (12).
2. The seeding bin cover without pin removal according to claim 1, characterized in that: The insertion rod (1), the first lever (2), and the second lever (6) are perpendicular to each other in pairs.
3. The seeding bin cover without pin removal according to claim 1, characterized in that: The inner side of the limiting seat (8) is provided with a spring groove (9), and the reset spring (10) is located inside the spring groove (9).
4. The seeding bin cover without pin removal according to claim 1, characterized in that: The return spring (10) is located on the side of the second lever (6) away from the socket (11).
5. The seeding bin cover without pin removal according to claim 1, characterized in that: The limiting seat (8) is fixedly connected to the seeding chamber (15), the socket (11) is fixedly connected to the chamber cover (14), and the chamber cover (14) is hinged to the seeding chamber (15).
6. The seeding bin cover without pin removal according to claim 1, characterized in that: A fixing plate (4) is fixedly connected to one side of the limiting seat (8), and a strip hole (7) is provided on the fixing plate (4) along the axial direction of the insertion rod (1).
7. The seeding bin cover without pin removal according to claim 1, characterized in that: The end of the insertion rod (1) and the end of the insertion hole (12) are both provided with guide slopes.