A rotary cultivator capable of adjusting the depth of cultivation

Abstract

The utility model belongs to the rotary cultivator field, concretely relates to a kind of rotary cultivator of adjustable rotary cultivation depth, including towed plate, the front lower portion of towed plate is slidably connected with rotary cultivator, the upper end middle part of rotary cultivator is equipped with screw rod by bearing, the front upper portion of towed plate is fixedly connected with two symmetrical distribution support plate, the inside of support plate is slidably connected with moving rod, the one end of moving rod close to screw rod is fixedly connected with support cover, the recess inside of support cover is fixedly connected with half internal thread pipe.The utility model can guide the movement of rotary cultivator by the structure such as guide rod holder, driving frame and guide sleeve etc. added on towed plate, the movement of rotary cultivator can be guided by the sliding connection between driving frame and towed plate and the sliding connection between guide rod holder and guide sleeve, under the action of guide, the output end of hydraulic cylinder can be avoided by rotary cultivator to exert lateral force, so the damage of hydraulic cylinder can be effectively avoided.

Description

Technical Field

[0001] This utility model relates to the field of rotary tiller technology, specifically to a rotary tiller with adjustable tilling depth. Background Technology

[0002] Rotary tillers are widely used agricultural machinery, primarily for soil preparation, pulverization, and fertilizer mixing. They significantly improve tillage efficiency and quality. The main functions of a rotary tiller include: pulverizing soil (breaking hard clods into fine particles to improve soil structure); mixing fertilizer (evenly mixing fertilizer or straw into the soil); leveling land (creating loose, level soil conditions for sowing or transplanting); and weeding (cutting weed roots with rotating blades). During use, the tilling depth needs adjustment for different tasks. Currently, the most common adjustment method is using a hydraulic cylinder. However, when the hydraulic cylinder moves the tiller, the force exerted during operation can easily cause the hydraulic cylinder's extension rod to be subjected to lateral forces, leading to cylinder damage and preventing further adjustment of the tiller's working height. Therefore, improvements to the existing technology are necessary. Utility Model Content

[0003] The purpose of this invention is to provide a rotary tiller with adjustable tillage depth, which solves the problem that the hydraulic cylinder is easily damaged after adjusting the working height of the rotary tiller, thus preventing it from working.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a rotary tiller with adjustable tillage depth, comprising a trailer plate, a rotary tiller slidably connected to the lower front of the trailer plate, a screw mounted on the upper middle part of the rotary tiller via a bearing, two symmetrically distributed support plates fixedly connected to the upper front of the trailer plate, a moving rod slidably connected inside the support plates, a support cover fixedly connected to the end of the moving rod near the screw, a semi-internal threaded tube fixedly connected inside the groove of the support cover, a moving plate fixedly connected to the end of the moving rod away from the support cover, a positioning mechanism provided on the moving plate, two symmetrically distributed guide rod frames fixedly connected to the outer side of the trailer plate, a guide sleeve slidably connected to the outer side of the guide rod frames, a drive frame fixedly connected to the back of the rotary tiller, and two symmetrically distributed hydraulic cylinders fixedly connected to the back of the trailer plate.

[0005] Preferably, the movable plate is slidably connected to the tow plate, and a handwheel is fixedly connected to the upper end of the screw, which can drive the screw to rotate.

[0006] Preferably, a bracket is fixedly connected to the upper middle part of the trailer, and the bracket is movably connected to the screw, so that the bracket can support the screw.

[0007] Preferably, the guide sleeve is fixedly connected to the rotary tiller and slidably connected to the trailer plate, and the guide sleeve can guide the movement of the rotary tiller.

[0008] Preferably, the output end of the hydraulic cylinder is fixedly connected to the drive frame, and the drive frame is slidably connected to the trailer plate. The drive frame can guide the movement of the output end of the hydraulic cylinder.

[0009] Preferably, the positioning mechanism includes a fixed cover, a fixed cover is fixedly connected to the outer side of the movable plate, a pull ring rod is slidably connected inside the fixed cover, a positioning post is fixedly connected to the lower end of the pull ring rod, a positioning groove is provided at the upper end of the tow plate, a spring is provided on the outer side of the pull ring rod, the fixed cover and the positioning post are both slidably connected to the tow plate, the positioning post is slidably connected to the fixed cover, and the pull ring rod can drive the positioning post to move.

[0010] Preferably, one end of the spring is fixedly connected to the fixed cover, and the other end of the spring is fixedly connected to the positioning post. The positioning post is slidably connected to the positioning groove, and the spring can automatically reset the positioning post through its elastic force.

[0011] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0012] 1. This utility model, by adding a guide rod frame, a drive frame, and a guide sleeve to the trailer plate, can guide the movement of the rotary tiller through the sliding connection between the drive frame and the trailer plate and the sliding connection between the guide rod frame and the guide sleeve. Under the guidance, the rotary tiller can avoid applying lateral force to the output end of the hydraulic cylinder, thereby effectively preventing damage to the hydraulic cylinder.

[0013] 2. This utility model adds a semi-internal threaded tube, a moving plate, and a positioning mechanism to the trailer plate. When the hydraulic cylinder is damaged, the positioning mechanism can merge the two semi-internal threaded tubes. After merging, the rotary tiller can be moved by the threaded engagement between the screw and the semi-internal threaded tube, thereby effectively ensuring the working efficiency of the rotary tiller. Attached Figure Description

[0014] Figure 1 This is a perspective view of the overall structure of this utility model;

[0015] Figure 2 For the present utility model Figure 1 A three-dimensional sectional view of the local structure;

[0016] Figure 3 For the present utility model Figure 1 A 3D magnified view of the movable plate;

[0017] Figure 4 For the present utility model Figure 1 Enlarged view of the A-section structure;

[0018] Figure 5 For the present utility model Figure 2 Enlarged view of the structure of part B.

[0019] In the diagram: 1. Trailer plate; 2. Rotary tiller; 3. Screw; 4. Support plate; 5. Moving rod; 6. Support cover; 7. Semi-threaded pipe; 8. Moving plate; 9. Positioning mechanism; 10. Bracket; 11. Guide rod frame; 12. Guide sleeve; 13. Drive frame; 14. Hydraulic cylinder; 15. Handwheel; 91. Fixed cover; 92. Pull ring rod; 93. Positioning groove; 94. Positioning column; 95. Spring. Detailed Implementation

[0020] 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.

[0021] Please see Figure 1 , Figure 2 , Figure 3 , Figure 4 A rotary tiller with adjustable tillage depth includes a trailer plate 1. A rotary tiller 2 is slidably connected to the lower front of the trailer plate 1. A screw 3 is mounted on the upper middle part of the rotary tiller 2 via a bearing. Two symmetrically distributed support plates 4 are fixedly connected to the upper front of the trailer plate 1. A moving rod 5 is slidably connected inside the support plate 4. A support cover 6 is fixedly connected to the end of the moving rod 5 near the screw 3. A semi-internal threaded tube 7 is fixedly connected inside the groove of the support cover 6. A moving plate 8 is fixedly connected to the end of the moving rod 5 away from the support cover 6. A positioning mechanism 9 is provided on the moving plate 8. Two symmetrically distributed guide rod frames 11 are fixedly connected to the outer side of the trailer plate 1. A guide sleeve 12 is slidably connected to the outer side of the guide rod frame 11. A drive frame 13 is fixedly connected to the back of the rotary tiller 2. Two symmetrically distributed hydraulic cylinders 14 are fixedly connected to the back of the trailer plate 1.

[0022] Please see Figure 1 , Figure 2 , Figure 3 , Figure 4The movable plate 8 is slidably connected to the trailer plate 1. A handwheel 15 is fixedly connected to the upper end of the screw 3, which can drive the screw 3 to rotate. A bracket 10 is fixedly connected to the middle of the upper end of the trailer plate 1. The bracket 10 is movably connected to the screw 3 and can support the screw 3. The guide sleeve 12 is fixedly connected to the rotary tiller 2 and slidably connected to the trailer plate 1. The guide sleeve 12 can guide the movement of the rotary tiller 2. The output end of the hydraulic cylinder 14 is fixedly connected to the drive frame 13 and slidably connected to the trailer plate 1. The drive frame 13 can guide the movement of the output end of the hydraulic cylinder 14.

[0023] Please see Figure 1 , Figure 2 , Figure 5 The positioning mechanism 9 includes a fixed cover 91. The fixed cover 91 is fixedly connected to the outside of the movable plate 8. A pull ring rod 92 is slidably connected inside the fixed cover 91. A positioning post 94 is fixedly connected to the lower end of the pull ring rod 92. A positioning groove 93 is opened at the upper end of the tow plate 1. A spring 95 is provided on the outside of the pull ring rod 92. The fixed cover 91 and the positioning post 94 are both slidably connected to the tow plate 1. The positioning post 94 is slidably connected to the fixed cover 91. The pull ring rod 92 can drive the positioning post 94 to move. One end of the spring 95 is fixedly connected to the fixed cover 91. The other end of the spring 95 is fixedly connected to the positioning post 94. The positioning post 94 is slidably connected to the positioning groove 93. The spring 95 can automatically reset the positioning post 94 through its elastic force.

[0024] The specific implementation process of this utility model is as follows: When in use, the hydraulic cylinder 14 is started. The hydraulic cylinder 14 drives the rotary tiller 2 to move vertically through the drive frame 13. During the movement, the rotary tiller 2 can be guided by the sliding between the guide sleeve 12 and the guide rod frame 11, which can effectively prevent damage to the hydraulic cylinder 14.

[0025] After the hydraulic cylinder 14 is damaged, pull the pull ring rod 92. The pull ring rod 92 drives the positioning pin 94 to move and compresses the spring 95. When the positioning pin 94 disengages from the current positioning groove 93, the limitation on the fixed cover 91 can be released. Then, the fixed cover 91 drives the moving plate 8 to move. The moving plate 8 drives the semi-internal threaded tube 7 to move through the moving rod 5 and the support cover 6. When the two semi-internal threaded tubes 7 are in contact, release the pull ring rod 92, and the spring 95 returns to its original position. The spring 95 can drive the positioning pin 94 to slide into the adjusted positioning groove 93 through its elastic force, thus completing the limitation on the semi-internal threaded tube 7. At the same time, it can complete the meshing between the semi-internal threaded tube 7 and the screw 3. Then, turn the handwheel 15. The handwheel 15 drives the screw 3 to rotate. During the rotation, the screw 3 can drive the rotary tiller 2 to move through the threaded engagement with the semi-internal threaded tube 7.

[0026] 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 rotary tiller with adjustable tillage depth, comprising a trailer (1), characterized in that: A rotary tiller (2) is slidably connected to the lower front of the trailer plate (1). A screw (3) is installed in the middle of the upper end of the rotary tiller (2) via a bearing. Two symmetrically distributed support plates (4) are fixedly connected to the upper front of the trailer plate (1). A moving rod (5) is slidably connected inside the support plate (4). A support cover (6) is fixedly connected to the end of the moving rod (5) near the screw (3). A semi-internal threaded tube (7) is fixedly connected inside the groove of the support cover (6). A moving plate (8) is fixedly connected to the end of the moving rod (5) away from the support cover (6). A positioning mechanism (9) is provided on the moving plate (8). Two symmetrically distributed guide rod frames (11) are fixedly connected to the outer side of the trailer plate (1). A guide sleeve (12) is slidably connected to the outer side of the guide rod frame (11). A drive frame (13) is fixedly connected to the back of the rotary tiller (2). Two symmetrically distributed hydraulic cylinders (14) are fixedly connected to the back of the trailer plate (1).

2. A rotary tiller with adjustable tillage depth according to claim 1, characterized in that: The movable plate (8) is slidably connected to the tow plate (1), and a handwheel (15) is fixedly connected to the upper end of the screw (3).

3. A rotary tiller with adjustable tillage depth according to claim 1, characterized in that: A bracket (10) is fixedly connected to the middle of the upper end of the trailer (1), and the bracket (10) is movably connected to the screw (3).

4. A rotary tiller with adjustable tillage depth according to claim 1, characterized in that: The guide sleeve (12) is fixedly connected to the rotary tiller (2), and the guide sleeve (12) is slidably connected to the trailer plate (1).

5. A rotary tiller with adjustable tillage depth according to claim 1, characterized in that: The output end of the hydraulic cylinder (14) is fixedly connected to the drive frame (13), and the drive frame (13) is slidably connected to the trailer plate (1).

6. A rotary tiller with adjustable tillage depth according to claim 1, characterized in that: The positioning mechanism (9) includes a fixed cover (91), the fixed cover (91) is fixedly connected to the outside of the movable plate (8), a pull ring rod (92) is slidably connected inside the fixed cover (91), a positioning post (94) is fixedly connected to the lower end of the pull ring rod (92), a positioning groove (93) is opened at the upper end of the tow plate (1), a spring (95) is provided on the outside of the pull ring rod (92), the fixed cover (91) and the positioning post (94) are both slidably connected to the tow plate (1), and the positioning post (94) is slidably connected to the fixed cover (91).

7. A rotary tiller with adjustable tillage depth according to claim 6, characterized in that: One end of the spring (95) is fixedly connected to the fixed cover (91), and the other end of the spring (95) is fixedly connected to the positioning post (94). The positioning post (94) is slidably connected to the positioning groove (93).

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