U-shaped lifting frame for agricultural machine

Abstract

The utility model relates to a U-shaped ascending and descending frame for agricultural machinery. The U-shaped ascending and descending frame comprises an agricultural machinery accessory mounting frame, a groove-shaped connecting frame, an inverted U-shaped connecting frame and a spring, a groove-shaped connecting frame is arranged at the front end of the agricultural machine accessory mounting frame, first through holes are formed in the two side walls of the groove-shaped connecting frame, a hanging point is arranged at the end, away from the agricultural machine accessory mounting frame, of the groove-shaped connecting frame, and a shaft sleeve is arranged at the end, close to the agricultural machine accessory mounting frame, in the groove-shaped connecting frame. The pin shaft penetrates through a first through hole of the groove-shaped connecting frame and is fixed to the rear end of the shaft sleeve, a limiting part is arranged at the position, away from the agricultural machine accessory mounting frame and close to the pin shaft, of the groove-shaped connecting frame, and the limiting part is used for limiting; the bottom of a first supporting arm of the inverted-U-shaped connecting frame is fixedly connected with the shaft sleeve, and a connecting clamp is arranged on a second supporting arm of the inverted-U-shaped connecting frame. One end of the spring is connected with the first supporting arm of the inverted-U-shaped connecting frame, and the other end of the spring is connected with the hanging point on the groove-shaped connecting frame. The lifting frame is simple in overall structure, economical and practical, and has the advantages of being small in occupied space, light in weight and the like.

Description

Technical Field

[0001] This utility model belongs to the field of agricultural machinery, specifically relating to a U-shaped lifting frame used in agricultural machinery. Background Technology

[0002] When assembling existing seeders, agricultural machinery accessories such as furrow openers and seed metering devices need to be installed on the main beam. To adapt to uneven ground, these accessories are typically connected to the main beam using a lifting and lowering connecting frame. Existing connecting frames mainly use a four-bar linkage structure with added springs. While this type of frame offers good lifting and lowering performance, its overall structure is relatively complex and has disadvantages such as large space occupation, heavy weight, and high cost. Furthermore, the four-bar linkage structure usually requires two U-shaped clamps to ensure the stability of the accessories during assembly, which increases assembly time and reduces efficiency. Summary of the Invention

[0003] In view of the above-mentioned technical problems and defects, the purpose of this utility model is to provide a U-shaped lifting frame for agricultural machinery. The lifting frame has lifting and lowering functions, a simpler overall structure, and advantages such as small space occupation, light weight, and low cost. Moreover, it can be connected to the main beam with a single U-shaped clip, making installation more convenient.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] A U-shaped lifting frame for agricultural machinery includes an agricultural machinery accessory mounting frame, a grooved connecting frame, an inverted U-shaped connecting frame, and a spring. The grooved connecting frame is located at the front end of the agricultural machinery accessory mounting frame. The grooved connecting frame has first through holes on its two side walls. A hanging point is located at the end of the grooved connecting frame away from the agricultural machinery accessory mounting frame. A bushing is located inside the grooved connecting frame at the end closest to the agricultural machinery accessory mounting frame. A pin passes through the first through hole of the grooved connecting frame and the rear end of the bushing and is fixed. A limiting part is located on the grooved connecting frame at a position away from the agricultural machinery accessory mounting frame and close to the pin, for limiting movement. The bottom of the first arm of the inverted U-shaped connecting frame near the agricultural machinery accessory mounting frame is fixedly connected to the bushing, allowing the agricultural machinery accessory mounting frame and the grooved connecting frame to rotate relative to the inverted U-shaped connecting frame. A connecting clip is located on the second arm of the inverted U-shaped connecting frame away from the agricultural machinery accessory mounting frame. One end of the spring is connected to the first arm of the inverted U-shaped connecting frame near the agricultural machinery accessory mounting frame, and the other end is connected to a contact point on the grooved connecting frame.

[0006] As a preferred embodiment of this utility model, the cross-section of the groove-shaped connecting frame is a U-shaped structure, the opening of the groove-shaped connecting frame faces upward and the end is fixed to the agricultural machinery accessory mounting frame, the two side walls of the groove-shaped connecting frame are provided with a second through hole near the first through hole, the second through hole is further away from the agricultural machinery accessory mounting frame than the first through hole and is located higher than the first through hole, the limiting pin passes through the second through hole of the groove-shaped connecting frame and is fixed at the rear end; the bottom surface of the groove-shaped connecting frame is provided with a hanging point at the end away from the agricultural machinery accessory mounting frame.

[0007] As a preferred embodiment of this utility model, the cross-section of the groove-shaped connecting frame is a U-shaped structure, the opening of the groove-shaped connecting frame faces upward and the end is fixed on the agricultural machinery accessory mounting frame, and a limiting baffle is provided on the top surface away from the end of the agricultural machinery accessory mounting frame, with the rear edge of the limiting baffle serving as a limiting part for limiting.

[0008] As a preferred embodiment of this utility model, the cross-section of the groove-shaped connecting frame is a U-shaped structure. The opening of the groove-shaped connecting frame faces downward and its end is fixed to the agricultural machinery accessory mounting frame. The top surface of the groove-shaped connecting frame near the end of the agricultural machinery accessory mounting frame is provided with an assembly limiting notch. The first support arm passes through the assembly limiting notch and is fixedly connected to the bushing. The front edge of the assembly limiting notch serves as a limiting part. The top surface of the groove-shaped connecting frame is provided with a hanging point at the end away from the agricultural machinery accessory mounting frame.

[0009] As a preferred embodiment of this utility model, the groove-shaped connecting frame is fixed to the front end of the agricultural machinery accessory mounting frame by welding, and is located on the top or front side of the agricultural machinery accessory mounting frame.

[0010] As a preferred embodiment of this utility model, the connecting clip is a U-shaped clip, and the second arm of the inverted U-shaped connecting frame away from the agricultural machinery accessory mounting frame is provided with an upper through hole and a lower through hole. The two ends of the U-shaped clip pass through the upper through hole and the lower through hole and are locked and fixed by nuts.

[0011] As a preferred embodiment of this utility model, the outer side of the first arm of the inverted U-shaped connecting frame near the agricultural machinery accessory mounting frame is provided with a hook point, and the upper end of the spring is installed on the hook point by hooking.

[0012] As a preferred embodiment of this utility model, the agricultural machinery accessory includes a seed metering device, and the agricultural machinery accessory mounting frame is a rectangular structure with an open rear end, and the seed metering device is mounted on the agricultural machinery accessory mounting frame.

[0013] Advantages and beneficial effects of this utility model:

[0014] (1) The U-shaped lifting frame provided by this utility model has lifting and lowering functions, and the overall structure is simpler, more economical and practical. It has advantages such as small space occupation, light weight and low cost. Moreover, it can be connected to the main beam with a U-shaped clip, making installation more convenient.

[0015] (2) The U-shaped lifting frame provided by this utility model is provided with a limiting pin near the pin shaft. The setting of the limiting pin enables the agricultural machinery to lift the seed metering device and other components away from the ground when not sowing. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the overall structure of the U-shaped lifting and landing gear of this utility model;

[0018] Figure 2 This is a schematic diagram of the second installation method of the groove-type connecting bracket of this utility model;

[0019] Attached reference numerals: 1. Agricultural machinery accessory mounting bracket; 2. Groove connecting bracket; 3. Inverted U-shaped connecting bracket; 4. Spring; 5. Bushing; 6. Pin; 7. Limit pin; 8. Connecting clip; 9. Hanging point; 301. First support arm; 302. Second support arm. Detailed Implementation

[0020] 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.

[0021] In the description of this application, it should be noted that the terms "front" and "rear" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the product is usually placed when in use. They are only used to facilitate the description of this application and to simplify 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. Therefore, they should not be construed as limitations on this application.

[0022] In the description of this application, it should also be noted that, unless otherwise expressly specified and limited, the terms "set" and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection, a direct connection, or an indirect connection through an intermediate medium; or they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0023] like Figure 1 As shown, this utility model provides a U-shaped lifting frame for agricultural machinery, including an agricultural machinery accessory mounting frame 1, a grooved connecting frame 2, an inverted U-shaped connecting frame 3, and a spring 4. The front end of the agricultural machinery accessory mounting frame 1 is provided with the grooved connecting frame 2, which has a U-shaped cross-section. The opening of the grooved connecting frame 2 faces upwards and its end is fixed to the agricultural machinery accessory mounting frame 1. The two side walls of the grooved connecting frame 2 are provided with a first through hole (unmarked) and a second through hole (unmarked). The bottom surface of the grooved connecting frame 2 has a hanging point (not shown; the hanging point could be a third through hole or a hook) at the end furthest from the agricultural machinery accessory mounting frame 1. The second through hole is further away from the agricultural machinery accessory mounting frame 1 than the first through hole and is positioned higher than the first through hole. A through hole is provided at one end of the groove-shaped connecting frame 2 near the agricultural machinery accessory mounting frame 1, and a bushing 5 is provided. A pin 6 passes through the first through hole of the groove-shaped connecting frame 2 and the rear end of the bushing 5 and is fixed. A limiting pin 7 passes through the rear end of the second through hole of the groove-shaped connecting frame 2 and is fixed. The bottom of the first support arm 301 of the inverted U-shaped connecting frame 3 near the agricultural machinery accessory mounting frame 1 is fixed to the bushing 5, so that the agricultural machinery accessory mounting frame 1 and the groove-shaped connecting frame 2 can rotate relative to the inverted U-shaped connecting frame 3. A connecting clip 8 is provided on the second support arm 302 of the inverted U-shaped connecting frame 3 away from the agricultural machinery accessory mounting frame 1. One end of the spring 4 is connected to the first support arm 301 of the inverted U-shaped connecting frame 3 near the agricultural machinery accessory mounting frame 1, and the other end is connected to the hanging point on the bottom surface of the groove-shaped connecting frame 2.

[0024] In this embodiment, the slotted connecting bracket 2 can also be installed in another way, specifically as follows: Figure 2 As shown, the cross-section of the grooved connecting frame 2 is a U-shaped structure. The opening of the grooved connecting frame 2 faces downward and its end is fixed to the agricultural machinery accessory mounting frame 1. The top surface of the grooved connecting frame 2 near the end of the agricultural machinery accessory mounting frame 1 is provided with an assembly limiting notch (unmarked). The first support arm 301 passes through the assembly limiting notch and is fixed to the bushing 5. The front edge of the assembly limiting notch serves as a limiting part for limiting. The top surface of the grooved connecting frame 2 is provided with a hanging point at the end away from the agricultural machinery accessory mounting frame.

[0025] It should be noted that in this embodiment, the grooved connecting frame 2 is mainly used to connect the inverted U-shaped connecting frame 3 to the agricultural machinery accessory mounting frame 1, so that the agricultural machinery accessory mounting frame 1 can rotate relative to the inverted U-shaped connecting frame 3 to perform lifting and lowering actions. At the same time, it is also necessary to limit the rotation angle of the agricultural machinery accessory mounting frame 1 so that it can be lifted off the ground. Therefore, the grooved connecting frame 2 needs to be equipped with a rotating shaft and a limiting part for limiting. However, this application does not limit how the rotation and limiting functions are specifically implemented. Those skilled in the art can refer to the above two methods or use other structures that can achieve rotation and limiting. For example, the opening of the grooved connecting frame 2 can be facing upward, and a limiting baffle can be set on the top surface away from the end of the agricultural machinery accessory mounting frame 1. The rear edge of the limiting baffle serves as a limiting part for limiting.

[0026] Furthermore, in this embodiment, the grooved connecting frame 2 is fixed to the front end of the agricultural machinery accessory mounting frame 1 by welding, and is disposed on the top surface or front side of the agricultural machinery accessory mounting frame 1. Figure 1 The diagram shows the installation on the front side, but in actual use, it is preferable to fix it on the top surface of the agricultural machinery accessory mounting bracket 1. This can increase the rotation angle and avoid interference when the rotation angle between the agricultural machinery accessory mounting bracket 1 and the inverted U-shaped connecting bracket 3 is too large.

[0027] Furthermore, in this embodiment, the connecting clip is a U-shaped clip. The second arm 302 of the inverted U-shaped connecting frame 3 on the side away from the agricultural machinery accessory mounting frame 1 is provided with an upper through hole (unmarked) and a lower through hole (unmarked). The two ends of the U-shaped clip pass through the upper through hole and the lower through hole and are locked and fixed by nuts. The U-shaped lifting frame is fixed to the main beam by the U-shaped clip.

[0028] Furthermore, in this embodiment, the outer side of the first arm 301 of the inverted U-shaped connecting frame 3 near the agricultural machinery accessory mounting frame 1 is provided with a hook point 9, and the upper end of the spring 4 is installed on the hook point 9 by hooking.

[0029] Furthermore, in this embodiment, the end of the pin can be fixed by a cotter pin or by a nut or other means. This application does not limit the specific fixing method.

[0030] In this embodiment, the agricultural machinery accessories include a seed metering device, a furrow opener, and a pressure roller. When the agricultural machinery accessory is a seed metering device, the agricultural machinery accessory mounting frame 1 is a rectangular structure with an open rear end, and the seed metering device is mounted on the agricultural machinery accessory mounting frame. During sowing, the seed metering device can be raised and lowered under the action of the U-shaped lifting frame, thereby meeting the needs of uneven ground. When changing ridges or when sowing is not required, the main beam is raised, and the seed metering device is moved away from the ground under the action of the limiting pin of the U-shaped lifting frame.

[0031] The above describes specific embodiments of this utility model, but the scope of protection of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the scope of protection of this utility model. Therefore, the scope of protection of this utility model should be determined by the scope of the claims.

Claims

1. A U-shaped lifting frame for agricultural machinery, characterized in that, The system includes an agricultural machinery accessory mounting frame, a trough-shaped connecting frame, an inverted U-shaped connecting frame, and a spring. The trough-shaped connecting frame has a trough-shaped connecting frame at its front end. The trough-shaped connecting frame has first through holes on its two side walls. A hanging point is located at the end of the trough-shaped connecting frame away from the mounting frame. A bushing is located inside the trough-shaped connecting frame near the mounting frame. A pin passes through the first through hole of the trough-shaped connecting frame and the rear end of the bushing and is fixed. A limiting part is located on the trough-shaped connecting frame near the pin, and this limiting part is used for limiting movement. The bottom of the first arm of the inverted U-shaped connecting frame near the mounting frame is fixed to the bushing, allowing the mounting frame and the trough-shaped connecting frame to rotate relative to the inverted U-shaped connecting frame. A connecting clip is located on the second arm of the inverted U-shaped connecting frame away from the mounting frame. One end of the spring is connected to the first arm of the inverted U-shaped connecting frame near the mounting frame, and the other end is connected to a contact point on the trough-shaped connecting frame.

2. The U-shaped lifting frame for agricultural machinery according to claim 1, characterized in that, The cross-section of the grooved connecting frame is U-shaped. The opening of the grooved connecting frame faces upward and its end is fixed to the agricultural machinery accessory mounting frame. The two side walls of the grooved connecting frame are provided with a second through hole near the first through hole. The second through hole is further away from the agricultural machinery accessory mounting frame than the first through hole and is located higher than the first through hole. The limiting pin passes through the second through hole of the grooved connecting frame and is fixed at the rear end. The bottom surface of the grooved connecting frame is provided with a hanging point at the end away from the agricultural machinery accessory mounting frame.

3. The U-shaped lifting frame for agricultural machinery according to claim 1, characterized in that, The cross-section of the grooved connecting frame is a U-shaped structure. The opening of the grooved connecting frame faces upward and the end is fixed to the agricultural machinery accessory mounting frame. A limiting baffle is set on the top surface away from the end of the agricultural machinery accessory mounting frame. The rear edge of the limiting baffle serves as a limiting part for limiting.

4. The U-shaped lifting frame for agricultural machinery according to claim 1, characterized in that, The cross-section of the grooved connecting frame is U-shaped. The opening of the grooved connecting frame faces downward and its end is fixed to the agricultural machinery accessory mounting frame. The top surface of the grooved connecting frame near the end of the agricultural machinery accessory mounting frame is provided with an assembly limiting notch. The first support arm passes through the assembly limiting notch and is fixed to the bushing. The front edge of the assembly limiting notch serves as a limiting part. The top surface of the grooved connecting frame is provided with a hanging point at the end away from the agricultural machinery accessory mounting frame.

5. A U-shaped lifting frame for agricultural machinery according to claim 1, 2, 3, or 4, characterized in that, The groove-shaped connecting frame is fixed to the front end of the agricultural machinery accessory mounting frame by welding, and is located on the top or front side of the agricultural machinery accessory mounting frame.

6. A U-shaped lifting frame for agricultural machinery according to claim 1, 2, 3, or 4, characterized in that, The connecting clip is a U-shaped clip. The second arm of the inverted U-shaped connecting frame, which is away from the agricultural machinery accessory mounting frame, is provided with an upper through hole and a lower through hole. The two ends of the U-shaped clip pass through the upper through hole and the lower through hole and are then locked and fixed by nuts.

7. A U-shaped lifting frame for agricultural machinery according to claim 1, 2, 3, or 4, characterized in that, The inverted U-shaped connecting frame has a hook point on the outer side of the first arm near the agricultural machinery accessory mounting frame, and the upper end of the spring is mounted on the hook point by hooking.

8. A U-shaped lifting frame for agricultural machinery according to claim 1, 2, 3, or 4, characterized in that, The agricultural machinery accessories include a seed metering device, and the agricultural machinery accessory mounting frame is a rectangular structure with an open rear end. The seed metering device is mounted on the agricultural machinery accessory mounting frame.

Images