A folding mechanism for a disc harrow

Abstract

The utility model relates to agricultural machinery technical field, concretely relates to a folding mechanism of disc harrow. Its including traction frame, the bottom of traction frame is provided with lifting assembly, lifting assembly includes lifting frame, one end of lifting frame rotatably arranged has folding frame, one end of folding frame rotatably arranged has two symmetrical distribution's mounting frame. The device first through lifting hydraulic rod in lifting assembly can drive folding frame and mounting frame whole lifting before folding, avoid the harrow piece on mounting frame when vertical overturning and ground contact, effectively prevent harrow piece collision damage, secondly, folding mechanism through first hydraulic rod and auxiliary hydraulic rod complete vertical 90 DEG inside overturning, realize horizontal plane's secondary folding again through second hydraulic rod, two folding actions significantly reduced the overall volume of device, make the width and height after folding all obtain optimization, greatly promote the space utilization of transportation and storage.

Description

Technical Field

[0001] This utility model relates to the field of agricultural machinery technology, and more specifically, to a folding mechanism for a disc rake. Background Technology

[0002] A disc harrow is an agricultural machine that uses a rolling concave disc to cut into the soil, severing grass roots and crop residues, and turning over soil clods to loosen, break up, and level the land. It can also mix surface fertilizers or pesticides with the topsoil and can be used for stubble removal and seed covering.

[0003] Existing disc rakes typically require folding and flipping the entire device for transport or storage when not in use. However, existing disc rakes usually only fold once. If folded upwards, the rake blades may hit the ground during the upward flipping process, resulting in damage to the blades. If folded horizontally, the folded device is wider and lower, taking up more space during storage and resulting in low space utilization. Utility Model Content

[0004] This utility model provides a folding mechanism for a disc rake to solve the problems in the background art mentioned above, namely: Traditional disc rakes sometimes have the rake blades touching the ground or only folding once during the folding process, resulting in damage to the rake blades and a still relatively large space occupied after folding.

[0005] To achieve the above objectives, the folding mechanism of the disc rake includes a traction frame, a lifting assembly at the bottom of the traction frame, a lifting frame, a folding frame rotatably mounted at one end of the lifting frame, and two symmetrically distributed mounting frames rotatably mounted at one end of the folding frame.

[0006] In the above technical solution, the lifting assembly is used to lift the folding frame and the mounting frame as a whole away from the ground before folding. The lifting assembly also includes a lifting hydraulic rod rotatably connected between the traction frame and the lifting frame. When the lifting hydraulic rod retracts, it can pull one end of the lifting frame, so that the lifting frame drives the folding frame and the mounting frame to lift.

[0007] In another technical solution, a folding mechanism is provided between the folding frame and the two mounting frames. One end of the folding frame is rotatably connected to two first connecting blocks, and one end of the two first connecting blocks is fixedly connected to a second connecting block. The second connecting block is rotatably connected to the two mounting frames. The folding mechanism includes two first hydraulic rods rotatably connected between the folding frame and the two first connecting blocks. The two first hydraulic rods drive the two first connecting blocks to drive the second connecting blocks and the two mounting brackets to rotate in the vertical plane. The folding mechanism also includes two symmetrically distributed second hydraulic rods, which are rotatably connected to both sides of the second connecting block, and the telescopic ends of the two second hydraulic rods are rotatably connected to the two mounting brackets.

[0008] In this technical solution, the overall volume of the device is significantly reduced through two folding actions, which optimizes the width and height after folding and greatly improves the space utilization rate for transportation and storage.

[0009] Compared with the prior art, the beneficial effects of this utility model are as follows: 1. In the folding mechanism of this disc rake, the lifting hydraulic rod in the lifting assembly first drives the folding frame and the mounting frame to be lifted as a whole before folding, avoiding contact between the rake blades on the mounting frame and the ground when vertically flipping, effectively preventing the rake blades from being damaged by collision. Secondly, the folding mechanism completes a 90° flip in the vertical plane through the first hydraulic rod and the auxiliary hydraulic rod, and then achieves a second fold in the horizontal plane through the second hydraulic rod. The two folding actions significantly reduce the overall volume of the device, optimize the width and height after folding, and greatly improve the space utilization rate for transportation and storage.

[0010] 2. In the folding mechanism of the disc rake, the symmetrical layout of the auxiliary hydraulic rod and the first hydraulic rod disperses the stress concentration of the first connecting block during the folding process, effectively preventing the first connecting block from being damaged due to excessive stress during the folding process, and also improving the stability of the mechanical structure. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the overall structure of the present invention before folding. Figure 2 This is a schematic diagram of the overall structure of the present invention after folding; Figure 3 This is a top view of the overall structure of this utility model after folding; Figure 4 This utility model Figure 2 Enlarged schematic diagram of the structure at point A; Figure 5 This is a right view of the overall structure of the folding frame and mounting frame in this utility model when they are raised.

[0012] The meanings of the labels in the diagram are as follows: 1. Traction frame; 11. Lifting assembly; 111. Lifting frame; 112. Lifting hydraulic rod; 2. Folding frame; 21. First connecting block; 22. Second connecting block; 3. Mounting bracket; 4. Folding mechanism; 41. First hydraulic rod; 42. Auxiliary hydraulic rod; 43. Second hydraulic rod. Detailed Implementation

[0013] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0014] Currently, traditional disc rakes often suffer from problems during the folding process, such as the rake blades touching the ground or only folding once. This leads to damage to the rake blades and a still relatively large space requirement after folding. This invention provides a folding mechanism for a disc rake, see [link to relevant documentation]. Figure 1 - Figure 3 As shown, the device includes a traction frame 1, a lifting assembly 11 at the bottom of the traction frame 1, a lifting frame 111, a folding frame 2 rotatably mounted at one end of the lifting frame 111, and two symmetrically distributed mounting frames 3 rotatably mounted at one end of the folding frame 2. A folding mechanism 4 is provided between the folding frame 2 and the two mounting frames 3. The lifting assembly 11 is used to lift the folding frame 2 away from the ground before the device is folded. Lifting the folding frame 2 can effectively prevent the mounting frames 3 and their components from colliding with the ground during the folding process, thus improving the safety of the device during the folding process. The folding mechanism 4 is used to first flip the two mounting frames 3 upwards to a vertical position on the vertical plane, and then flip the two mounting frames 3 90° on the horizontal plane to a folded state. Through two folds, the overall volume of the device after folding can be further reduced.

[0015] When implementing, refer to Figure 5 As shown, the lifting assembly 11 also includes a lifting hydraulic rod 112 rotatably connected between the traction frame 1 and the lifting frame 111. When the telescopic end of the lifting hydraulic rod 112 retracts, it can pull one end of the lifting frame 111, causing the lifting frame 111 to rotate upward around its connection axis with the traction frame 1, thereby lifting the folding frame 2 and the mounting frame 3 upward. If the folding frame 2 and the mounting frame 3 are not lifted, when the folding frame 2 is folded upward, the disc rake on the mounting frame 3 will collide and be squeezed with the ground during rotation, resulting in damage to the disc rake. Lifting the folding frame 2 and the mounting frame 3 a certain distance can effectively avoid the above situation and improve the safety during folding. Furthermore, refer to Figure 2 , Figure 3 and Figure 4As shown, one end of the folding frame 2 is rotatably connected to two first connecting blocks 21, and one end of each first connecting block 21 is fixedly connected to a second connecting block 22. The second connecting blocks 22 are rotatably connected to two mounting brackets 3. The folding mechanism 4 includes two first hydraulic rods 41 rotatably connected between the folding frame 2 and the two first connecting blocks 21. The two first hydraulic rods 41 are used to drive the two first connecting blocks 21 to rotate the second connecting blocks 22 and the mounting brackets 3 in the vertical plane. Figure 2 The plane formed by the x-axis and z-axis.

[0016] Furthermore, if only the first hydraulic rod 41 is used to drive the folding frame 2 and the mounting frame 3 to fold upwards, the stress on the first connecting block 21 during the folding process will be too concentrated. Therefore, referring to... Figure 4 As shown, the folding mechanism 4 also includes two auxiliary hydraulic rods 42, which are rotatably connected to the sides of the folding frame 2 and the first connecting block 21. The auxiliary hydraulic rods 42 are used to assist the first hydraulic rod 41 in folding the folding frame 2 and the mounting frame 3 upward.

[0017] Furthermore, the folding mechanism 4 also includes two symmetrically distributed second hydraulic rods 43, which are rotatably connected to both sides of the second connecting block 22, and their telescopic ends are rotatably connected to the two mounting brackets 3, respectively. (Refer to...) Figure 2 As shown, after the two first hydraulic rods 41 and the auxiliary hydraulic rod 42 flip the folding frame 2 and the mounting frame 3 upwards by 90°, the telescopic ends of the two second hydraulic rods 43 begin to retract, thereby flipping and folding the two mounting frames 3 in the horizontal plane. Figure 3 The plane formed by the x-axis and y-axis can be folded twice to further reduce the overall volume of the device, making it easier to transport and store.

[0018] The working principle of this device is as follows: When the entire folding device needs to be folded, the user first activates the lifting hydraulic rod 112 to drive the lifting frame 111 to lift. At this time, the folding frame 2 and the mounting frame 3 are lifted upwards away from the ground. After lifting a suitable distance, the user closes the lifting hydraulic rod 112 and activates the two first hydraulic rods 41 and the auxiliary hydraulic rod 42 to retract them. At this time, the two first connecting blocks 21 drive the second connecting block 22 and the folding frame 2 to rotate 90° upwards in the vertical plane around the connecting axis of the folding frame 2 and the traction frame 1, completing the first fold. Afterwards, the user closes the two first hydraulic rods 41 and the auxiliary hydraulic rod 42 and activates the two second hydraulic rods 43 to retract them. At this time, the two mounting frames 3 rotate in the horizontal plane around the connection point between themselves and the second connecting block 22, moving towards each other, completing the second fold.

[0019] 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 preferred examples and are not intended to limit the 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. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A folding mechanism for a disc rake, comprising a traction frame (1) characterized in that: The bottom of the traction frame (1) is provided with a lifting component (11), the lifting component (11) includes a lifting frame (111), a folding frame (2) is rotatably provided at one end of the lifting frame (111), and two symmetrically distributed mounting frames (3) are rotatably provided at one end of the folding frame (2), and a folding mechanism (4) is provided between the folding frame (2) and the two mounting frames (3). The lifting component (11) is used to lift the folding frame (2) and the mounting frame (3) away from the ground before folding, and the folding mechanism (4) is used to fold the device twice to reduce the overall width of the device after folding.

2. The folding mechanism of the disc rake according to claim 1, characterized in that: The lifting assembly (11) also includes a lifting hydraulic rod (112) rotatably connected between the traction frame (1) and the lifting frame (111). When the lifting hydraulic rod (112) retracts, it can pull one end of the lifting frame (111) so that the lifting frame (111) drives the folding frame (2) and the mounting frame (3) to lift.

3. The folding mechanism of the disc rake according to claim 2, characterized in that: One end of the folding frame (2) is rotatably connected to two first connecting blocks (21), and one end of the two first connecting blocks (21) is fixedly connected to a second connecting block (22). The second connecting block (22) is rotatably connected to the two mounting frames (3).

4. The folding mechanism of the disc rake according to claim 3, characterized in that: The folding mechanism (4) includes two first hydraulic rods (41) rotatably connected between the folding frame (2) and the two first connecting blocks (21). The two first hydraulic rods (41) drive the two first connecting blocks (21) to drive the second connecting block (22) and the two mounting brackets (3) to rotate in the vertical plane.

5. The folding mechanism of the disc rake according to claim 4, characterized in that: An auxiliary hydraulic rod (42) is rotatably connected between the folding frame (2) and the first connecting block (21). The two auxiliary hydraulic rods (42) are used to assist the first hydraulic rod (41) in driving the first connecting block (21) to move and to disperse the stress on the first connecting block (21) when folding.

6. The folding mechanism of the disc rake according to claim 5, characterized in that: The folding mechanism (4) also includes two symmetrically distributed second hydraulic rods (43), which are rotatably connected to both sides of the second connecting block (22).

7. The folding mechanism of the disc rake according to claim 6, characterized in that: The telescopic ends of the two second hydraulic rods (43) are respectively rotatably connected to the two mounting brackets (3).

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