Automatic opening and closing interlocking mechanism for grain unloading door
By designing an automatic opening and closing chain mechanism including grain unloading door, pull rod, rotary support arm and lifting cylinder, the problem of grain unloading door not being able to close automatically after the fruit warehouse body is reset, automatic horizontal closure is achieved, reducing manual operation time and reducing the volume and complexity of the equipment.
Patent Information
- Application Number
- CN202420596878.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-26
- Publication Date
- 2025-03-11
- Estimated Expiration
- 2034-03-26
AI Technical Summary
The existing fruit warehouse body grain unloading door cannot be closed independently after the fruit warehouse body is reset and needs to be closed manually. The existing opening and closing chain mechanism is large in size, takes up too much space and complex structure.
An automatic opening and closing chain mechanism of grain unloading door is designed. Through the cooperation of grain unloading door, pull rod, rotary support arm and lifting cylinder on the fruit warehouse body, the automatic horizontal closure of grain unloading door is achieved using components such as torsion spring and nylon wheel.
The automatic closing of the unloading door after the fruit warehouse body is reset is achieved, which reduces manual operation time, reduces the volume and complexity of the equipment, and improves the operation stability.
Smart Images
Figure CN222592391U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of grain unloading doors, in particular to an automatic opening and closing interlocking mechanism for grain unloading doors. Background Art
[0002] The grain unloading door of the existing fruit bin (silo) is driven by the oil cylinder to flip the fruit bin as a whole, so that the fruit inside the bin moves backward and pushes the grain unloading door open, thereby completing the purpose of unloading grain. However, after the fruit bin returns to its original position, the grain unloading door cannot close automatically, resulting in an open and closed state, which requires manual closing by staff, which is time-consuming. In addition, the existing opening and closing chain mechanism is large in size, resulting in excessive space occupation and a relatively complex structure.
[0003] Therefore, the present application provides an automatic opening and closing interlocking mechanism for a grain unloading door to meet the demand. Utility Model Content
[0004] The purpose of the present application is to provide an automatic opening and closing interlocking mechanism for a grain unloading door, aiming to solve the problem that the grain unloading door cannot be closed after the fruit bin body is reset, and the specifications of the opening and closing interlocking mechanism are large.
[0005] To achieve the above-mentioned purpose, the present application provides the following technical solutions: an automatic opening and closing interlocking mechanism for a grain unloading door, comprising a fruit bin support frame, a fruit bin body, and a lifting oil cylinder, wherein the fruit bin support frame is hinged to the left bottom end of the fruit bin body, and a lifting oil cylinder is provided on the fruit bin support frame, and the two ends of the lifting oil cylinder are respectively hinged to the fruit bin support frame and the fruit bin body, and a fruit bin upper cover is hinged to the top left end of the fruit bin body, and an opening and closing interlocking mechanism is provided on the fruit bin upper cover;
[0006] The opening and closing interlocking mechanism includes a grain unloading door, a pull rod, and a rotating support arm. The grain unloading door is arranged on the fruit bin body and is pressed against the upper cover of the fruit bin. A pull rod is hinged on the outer wall of the grain unloading door. The pull rod is hinged to the rotating support arm, and the free end of the rotating support arm is slidably connected to the lifting cylinder. A reset piece is provided at the hinged end of the rotating support arm.
[0007] Preferably, the reset member is a torsion spring, which is used to control the opening angle of the pull rod and the rotating arm. After the rotating arm is separated from the guide member on the lifting cylinder, the torsion spring forms a fixed angle between the pull rod and the rotating arm, so as to play a role of linkage closing when the grain unloading door is closed later.
[0008] Preferably, the opening angle is less than 77.45 degrees. Through the torsion spring provided at the pull rod and the hinge point of the rotating arm, the rotating arm can automatically open and form the above angle after being separated from the guide member, so that it can contact the guide member again after the subsequent grain unloading is completed, so as to achieve the purpose of horizontal closing of the grain unloading door.
[0009] Preferably, the rotating support arm comprises a support arm and an extension arm. The support arm is connected to the pull rod via a torsion spring. The free end of the support arm is provided with an extension arm. The lifting cylinder is provided with a guide. The extension arm and the guide are slidably connected.
[0010] Preferably, the guide member includes a nylon wheel and a hoop, the hoop is fixed to the fixed end of the lifting cylinder, and the hoop is hinged with a nylon wheel, and the nylon wheel is slidably connected to the extension arm. The nylon wheel is used to reduce the friction between the rotating support arm and the extension arm when the rotating support arm contacts the nylon wheel, so that the device can operate stably.
[0011] Preferably, the extension arm is in an arc shape, so as to be linked with the nylon wheel. The shape of the extension arm is to reduce the friction during contact and improve the stability of the mechanism during operation during the subsequent closing process of the grain unloading door.
[0012] In summary, the technical effects and advantages of the utility model are:
[0013] The utility model has a grain unloading door hinged on a fruit bin body, and the grain unloading door is connected to a pull rod and a rotating arm on the outer wall. The pull rod is hinged to the rotating arm, and the free end of the rotating arm is slidably connected to a guide member on a lifting cylinder, so that under normal transportation, the grain unloading door covers the fruit bin upper cover of the fruit bin body to prevent it from being in an open or closed state; after the unloading of the fruit bin body is completed, the lifting cylinder is slowly recovered, and during the recovery process, the rotating arm contacts the guide member, so that the rotating arm moves toward the pull rod direction and reduces the angle between the rotating arm and the pull rod, and the pull rod pulls the grain unloading door to press down the fruit bin upper cover to achieve automatic horizontal closing. Compared with the prior art, the device has a smaller size and stable operation, and will not derail or collide with the hydraulic hose of the lifting cylinder. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without paying any creative work.
[0015] Figure 1 It is a schematic diagram of the structure of the utility model;
[0016] Figure 2 It is a schematic diagram of the motion state structure of the utility model;
[0017] Figure 3 It is a schematic diagram of the enlarged structure of point A of the utility model;
[0018] Figure 4 This is a schematic diagram of the structure of the rotating support arm of the utility model;
[0019] Figure 5 It is a schematic diagram of the structure of the unloading state of the utility model.
[0020] In the figure: 1. Fruit bin support frame; 2. Fruit bin body; 3. Lifting cylinder; 4. Grain unloading door; 5. Pull rod; 6. Rotating support arm; 61. Support arm; 62. Extension arm; 7. Fruit bin upper cover; 8. Guide member. DETAILED DESCRIPTION
[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0022] Example 1: Reference Figure 1-5 The shown embodiment shows an automatic opening and closing interlocking mechanism for a grain unloading door, comprising a fruit bin support frame 1, a fruit bin body 2, and a lifting cylinder 3. The fruit bin body 2 is hinged on the fruit bin support frame 1, and a lifting cylinder 3 is provided on the fruit bin support frame 1. The fixed end of the lifting cylinder 3 is hinged on the fruit bin support frame 1, and the free end of the lifting cylinder 3 is hinged on the fruit bin support frame 1, so as to control the state of the fruit bin body 2 on the fruit bin support frame 1.
[0023] In order to close the fruit bin cover 7 on the top of the fruit bin body 2 after unloading, a grain unloading door 4 for pressing the fruit bin cover 7 is hinged on the top of the left end of the fruit bin body 2. The grain unloading door 4 is a U-shaped part, and a pull rod 5 and a rotating support arm 6 are provided on the outer wall of the grain unloading door 4. One end of the pull rod 5 is hinged on the grain unloading door 4, and the free end of the pull rod 5 is connected to the rotating support arm 6 through a torsion spring. The two are opened to form an angle of 77.45 degrees. During the recovery of the lifting cylinder 3, the fruit bin body 2 is gradually pulled back, so the rotating support arm 6 and the grain unloading door 4 also flip downward under the action of gravity, and then the rotating support arm 6 is brought into contact with the guide member 8 on the lifting cylinder 3 and resisted. During the continued recovery of the lifting cylinder 3, the angle between the rotating support arm 6 and the pull rod 5 is gradually reduced, thereby driving the positional relationship between the grain unloading door 4 and the top surface of the fruit bin body 2 to change to a parallel state, thereby achieving the purpose of pressing the fruit bin cover 7.
[0024] Rotating arm 6: One end of the arm 61 is hinged to the pull rod 5 through a torsion spring, and the other end is connected to the extension arm 62. The two cooperate to form a key link of the opening and closing interlocking mechanism. The extension arm 62 is an arc-shaped member (such as Figure 4As shown), when in use, the extension arm 62 cooperates with the guide member 8 on the lifting cylinder 3, the clamp of the guide member 8 is fixed on the fixed end of the lifting cylinder 3, and a nylon wheel is provided on the clamp. The extension arm 62 is slidably connected to the nylon wheel, which plays a role in improving the stability of the equipment during the process of the grain unloading door 4 covering the fruit bin upper cover 7.
[0025] The clamp is fixed to the fixed end of the lifting cylinder 3, and the nylon wheel rotatably connected to the clamp corresponds to the position of the extension arm 62, and the two cooperate to improve the stability of the equipment during operation.
[0026] Working principle of the utility model: Unloading operation: Start the lifting cylinder 3, the lifting cylinder 3 extends slowly, with the hinge point of the fruit bin support frame 1 as the support point, and the telescopic end pushes the fruit bin body 2 to lift up on the fruit bin support frame 1, and the fruit bin body 2 starts to move with the hinge point on the fruit bin support frame 1 as the center of the circle, and in the process of gradual extension of the overall length of the lifting cylinder 3, the angle between the fruit bin body 2 and the fruit bin support frame 1 is also gradually enlarged, and the material inside the fruit bin body 2 moves backward and squeezes the hinged fruit bin cover 7 outward. Since the fruit bin body 2 is lifted, the unloading door 4 pressed on the fruit bin cover 7 is turned outward under the action of gravity, and the limit on the fruit bin cover 7 is released (in the process of extending the lifting cylinder 3, the guide 8 on the lifting cylinder 3 is separated from the rotating support arm 6, and the limit on the rotating support arm 6 and the pull rod 5 is released, so that the unloading door 4 can be opened autonomously under the action of gravity) to realize unloading.
[0027] Reset operation: After unloading is completed, the lifting cylinder 3 is slowly recovered, shortening the overall length of the lifting cylinder 3, so that the fruit bin body 2 is slowly reset. During the resetting process of the fruit bin body 2, the fruit bin cover 7 is automatically reset under the action of gravity. In order to prevent jumping during transportation, the grain unloading door 4 hinged on the fruit bin body 2 is flipped back under the action of the pull rod 5 and the rotating support arm 6 under the change of gravity direction, and the extension arm 62 of the rotating support arm 6 contacts the nylon wheel of the guide 8. The two cooperate to reduce friction, so that the grain unloading door 4 can slowly and smoothly cover the fruit bin cover 7. The extension arm 62 is limited by the nylon wheel. Therefore, the extension arm 62 cooperates with the pull rod 5 through the connected support arm 61, and the distance between the two is shortened, pulling the grain unloading door 4 gradually close to the fruit bin cover 7, thereby achieving the purpose of limiting and closing the fruit bin cover 7.
[0028] The electromechanical connection involved in the present utility model is a common means used by those skilled in the art, and technical inspiration can be obtained through a limited number of tests, which belongs to common knowledge.
[0029] Components not described in detail herein are prior art.
[0030] Finally, it should be noted that the above is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present utility model shall be included in the protection scope of the present utility model.
Claims
1. An automatic opening and closing interlocking mechanism for a grain unloading door, characterized in that: The fruit bin support frame (1) comprises a fruit bin body (2) and a lifting cylinder (3), wherein the fruit bin support frame (1) is hingedly connected to the left bottom of the fruit bin body (2), and the fruit bin support frame (1) is provided with a lifting cylinder (3), and the two ends of the lifting cylinder (3) are respectively hingedly connected to the fruit bin support frame (1) and the fruit bin body (2), and the top left end of the fruit bin body (2) is hingedly connected to a fruit bin upper cover (7), and the fruit bin upper cover (7) is provided with an opening and closing interlocking mechanism; The opening and closing interlocking mechanism comprises a grain unloading door (4), a pull rod (5), and a rotating support arm (6); the grain unloading door (4) is arranged on the fruit bin body (2) and is pressed against the fruit bin upper cover (7); the pull rod (5) is hinged on the outer wall of the grain unloading door (4); the pull rod (5) is hinged to the rotating support arm (6); and the free end of the rotating support arm (6) is slidably connected to the lifting cylinder (3); A reset piece is provided at the hinged end of the rotating support arm (6).
2. The automatic opening and closing interlocking mechanism of a grain unloading door according to claim 1 is characterized in that: The reset element is a torsion spring, which is used to control the opening angle of the pull rod (5) and the rotating support arm (6).
3. The automatic opening and closing interlocking mechanism of a grain unloading door according to claim 2 is characterized in that: The opening angle is less than 77.45 degrees.
4. The automatic opening and closing interlocking mechanism of a grain unloading door according to claim 2 is characterized in that: The rotating support arm (6) comprises a support arm (61) and an extension arm (62); the support arm (61) is connected to the pull rod (5) via a torsion spring; the extension arm (62) is provided at the free end of the support arm (61); a guide member (8) is provided on the lifting cylinder (3); and the extension arm (62) is slidably connected to the guide member (8).
5. The automatic opening and closing interlocking mechanism of a grain unloading door according to claim 4 is characterized in that: The guide member (8) comprises a nylon wheel and a hoop, wherein the hoop is fixed to a fixed end of the lifting cylinder (3), and the nylon wheel is hingedly connected to the hoop, and the nylon wheel is slidably connected to the extension arm (62).
6. The automatic opening and closing interlocking mechanism of a grain unloading door according to claim 5 is characterized in that: The extension arm (62) is in an arc shape, and its purpose is to be linked with the nylon wheel.