Depth wheel adjusting mechanism

Abstract

The utility model discloses a depth limiting wheel adjusting mechanism which is characterized in that furrow openers are symmetrically mounted in the middle of a rack, a depth limiting assembly is mounted in the middle of the rack, a first adjusting rod is movably mounted in a depth adjusting opening, the bottom end of the first adjusting rod movably penetrates through the top end of a shifting frame, and a fixing shaft is rotatably mounted at the bottom end of the shifting frame in a penetrating manner; the first adjusting rod slides along the top end of the shifting frame to change the height of the depth limiting wheel, so that the height difference between the bottom end of the furrow opener and the bottom end of the depth limiting wheel is adjusted, the position of the furrow opener is not changed, and the furrow opener can be used for furrow opening and furrow opening. Only the height of the depth limiting wheel is changed, the situation that the furrowing precision is reduced due to loosening of the connecting position of the furrow opener is prevented, operation is easier and more labor-saving, under the action of the reset spring, the positioning pin is embedded into the positioning hole to position the pull handle, the pull handle is prevented from shifting and shaking, and the furrowing precision is guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of agricultural machinery technology, specifically a depth-limiting wheel adjustment mechanism. Background Technology

[0002] A seeder is a type of planting machinery used to plant a certain type or type of crop. It is often named after the crop, such as a grain strip seeder, a corn hill seeder, a cotton seeder, or a pasture spreader. The object of planting is the seed of the crop or coated seeds that have been made into pellets.

[0003] Seeders are often used in single-unit form. Each seeding unit includes a complete set of working parts that can complete the entire operation process, such as furrowing, seeding, covering, and compaction. However, seeders usually control the depth of the furrowing part by directly controlling the depth of the furrowing part into the soil. The adjustment process is laborious and can easily lead to the furrowing part becoming loose, resulting in a decrease in furrowing accuracy. Utility Model Content

[0004] This invention provides a depth-limiting wheel adjustment mechanism, which can effectively solve the problem mentioned in the background art that seeders usually control the depth of the trenching part by directly controlling the depth of the trenching part entering the soil. The adjustment process is laborious and can easily lead to the trenching part becoming loose, resulting in a decrease in trenching accuracy.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a depth limiting wheel adjustment mechanism, including a frame, with trenchers symmetrically installed in the middle of the frame, and a depth limiting component installed in the middle of the frame. The depth limiting component includes a depth adjustment port, a first adjustment rod, a pull handle, a toggle frame, a limiting ring, a fixed shaft, a toggle rod, a depth limiting frame, a toggle plate, a depth limiting wheel, a positioning hole, a positioning pin, a compression sleeve, and a return spring.

[0006] The top surface of the frame is provided with a depth adjustment port, and a first adjustment rod is movably installed inside the depth adjustment port. A handle is welded to the top of the first adjustment rod, and the bottom end of the first adjustment rod movably passes through the top of the actuating frame. A limit ring is fixedly sleeved at the bottom end of the first adjustment rod inside the actuating frame. A fixed shaft is rotatably installed at the bottom end of the actuating frame. Actuating rods are welded to both sides of the actuating frame. The frame is connected to a depth limiting frame via a rotating shaft below the actuating frame. An actuating plate is welded to the top of the depth limiting frame near the actuating rod, and a depth limiting wheel is installed at the bottom end of the depth limiting frame via a rotating shaft.

[0007] According to the above technical solution, the top surface of the frame is provided with positioning holes evenly on both sides of the depth adjustment port, the bottom surface of the handle is symmetrically welded with positioning pins, the top of the first adjusting rod is slidably sleeved with a compression sleeve inside the frame, and the first adjusting rod is sleeved with a return spring between the compression sleeve and the limiting ring.

[0008] According to the above technical solution, the positioning hole and the positioning pin are in transition fit, and the depth adjustment port of the frame is an arc-shaped curved surface.

[0009] According to the above technical solution, the longitudinal section of the actuating frame is U-shaped, and there are two depth limiting frames, which are symmetrically distributed on both sides of the depth limiting wheel.

[0010] According to the above technical solution, a pressing assembly is installed at one end of the frame. The pressing assembly includes a pressing adjustment port, a bayonet, a second adjusting rod, a pressing rotating plate, an inverted T-shaped transmission plate, a tension spring, a pressing frame, and a pressing wheel.

[0011] The frame has a pressing adjustment port at one end, and slots are evenly distributed on one side of the pressing adjustment port. A second adjusting rod is movably installed inside the pressing adjustment port. A pressing rotating plate is fixedly connected to the bottom end of the second adjusting rod. The middle part of the pressing rotating plate is rotatably connected to the frame via a screw. The bottom end of the pressing rotating plate is snapped with an inverted T-shaped transmission plate. The top end of the inverted T-shaped transmission plate is rotatably connected to the frame via bolts. One end of a tension spring is hung on both ends of the inverted T-shaped transmission plate. A pressing frame is symmetrically installed at one end of the frame. Pressing wheels are symmetrically installed at the bottom end of the pressing frame via a rotating shaft. The other end of a tension spring is hung on the pressing frame near the top of the pressing wheel.

[0012] According to the above technical solution, the frame has an arc-shaped curved surface at the pressure adjustment port, and the pressure wheel is aligned with the trencher.

[0013] Compared with the prior art, the advantages of this utility model are: the structure of this utility model is scientific and reasonable, and it is safe and convenient to use;

[0014] 1. With the depth limiting component set up, when the depth of sowing furrows needs to be adjusted, pull the handle upwards. The first adjusting rod slides along the top of the actuating frame, the return spring contracts, and the first adjusting rod slides along the depth adjustment port, thereby driving the actuating frame to rotate around the fixed axis. The actuating rod pushes the actuating plate to move, which in turn causes the depth limiting frame to rotate around the connection point, changing the height of the depth limiting wheel. This adjusts the height difference between the bottom of the furrow opener and the bottom of the depth limiting wheel. The position of the furrow opener remains unchanged, only the height of the depth limiting wheel is changed, to prevent the furrow opener connection from loosening and causing a decrease in furrowing accuracy. The operation is simpler and less labor-intensive.

[0015] Next, release the handle. Under the action of the return spring, the positioning pin is inserted into the positioning hole to position the handle, preventing it from shifting or shaking, and ensuring the accuracy of the groove.

[0016] 2. A pressing component is provided. Pulling the second adjusting rod along the pressing adjustment port causes the pressing plate to rotate around the connection point, which in turn causes the inverted T-shaped transmission plate to rotate around the connection point, pulling the tension spring to extend and causing the pressing frame to rotate around the connection point, changing the height of the pressing wheel. This allows the soil in the trench to be squeezed with appropriate force after the furrow is opened and sown. The depth limiting component and the pressing component work together to improve the sowing effect. Attached Figure Description

[0017] The accompanying drawings are provided to further understand the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation thereof.

[0018] In the attached diagram:

[0019] Figure 1 This is a schematic diagram of the structure of this utility model;

[0020] Figure 2 This is a schematic diagram of the depth limiting component of this utility model;

[0021] Figure 3 This is a schematic diagram of the structure of this utility model;

[0022] Figure 4 This is a schematic diagram of the structure of this utility model;

[0023] Figure 5 This is a schematic diagram of the structure of the pressing component of this utility model;

[0024] Labels in the diagram: 1. Frame; 2. Trencher;

[0025] 3. Depth limiting assembly; 301. Depth adjustment port; 302. First adjustment rod; 303. Pull handle; 304. Actuating frame; 305. Limiting ring; 306. Fixed shaft; 307. Actuating rod; 308. Depth limiting frame; 309. Actuating plate; 310. Depth limiting wheel; 311. Positioning hole; 312. Positioning pin; 313. Extrusion sleeve; 314. Return spring;

[0026] 4. Pressing assembly; 401. Pressing adjustment port; 402. Bayonet; 403. Second adjusting rod; 404. Pressing rotating plate; 405. Inverted T-shaped transmission plate; 406. Tension spring; 407. Pressing frame; 408. Pressing wheel. Detailed Implementation

[0027] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit the present invention.

[0028] Example: Figure 1-5 As shown, this utility model provides a technical solution for a depth limiting wheel adjustment mechanism, including a frame 1, with a trencher 2 symmetrically installed in the middle of the frame 1, and a depth limiting component 3 installed in the middle of the frame 1. The depth limiting component 3 includes a depth adjustment port 301, a first adjustment rod 302, a pull handle 303, a toggle frame 304, a limiting ring 305, a fixed shaft 306, a toggle rod 307, a depth limiting frame 308, a toggle plate 309, a depth limiting wheel 310, a positioning hole 311, a positioning pin 312, a compression sleeve 313, and a return spring 314.

[0029] A depth adjustment port 301 is provided on the top surface of the frame 1. A first adjustment rod 302 is movably installed inside the depth adjustment port 301. A handle 303 is welded to the top of the first adjustment rod 302. The bottom end of the first adjustment rod 302 movably passes through the top of the actuating frame 304. A limit ring 305 is fixedly sleeved at the bottom end of the first adjustment rod 302 inside the actuating frame 304. A fixed shaft 306 is rotatably installed through the bottom end of the actuating frame 304. Actuating rods 307 are welded to both sides of the actuating frame 304. A depth limiting frame 308 is connected to the frame 1 below the actuating frame 304 via a rotating shaft. An actuating plate 309 is welded to the top of the depth limiting frame 308 near the actuating rod 307. A depth limiting wheel 310 is installed at the bottom end of the depth limiting frame 308 via a rotating shaft. The longitudinal section of 304 is U-shaped. There are two depth limiting frames 308, which are symmetrically distributed on both sides of the depth limiting wheel 310 to facilitate the stability of the depth limiting frames 308. The top surface of the frame 1 is evenly provided with positioning holes 311 on both sides of the depth adjustment port 301. The bottom surface of the handle 303 is symmetrically welded with positioning pins 312. The positioning holes 311 and positioning pins 312 are transition fit. The depth adjustment port 301 of the frame 1 is an arc-shaped curved surface to facilitate the docking and fixing of the positioning holes 311 and positioning pins 312. The top of the first adjusting rod 302 is slidably sleeved with a compression sleeve 313 inside the frame 1. The first adjusting rod 302 is sleeved with a return spring 314 between the compression sleeve 313 and the limiting ring 305.

[0030] One end of the frame 1 is equipped with a pressing assembly 4, which includes a pressing adjustment port 401, a bayonet 402, a second adjusting rod 403, a pressing rotating plate 404, an inverted T-shaped transmission plate 405, a tension spring 406, a pressing frame 407, and a pressing wheel 408.

[0031] One end of the frame 1 has a pressing adjustment port 401, and slots 402 are evenly distributed on one side of the pressing adjustment port 401. A second adjusting rod 403 is movably installed inside the pressing adjustment port 401. A pressing rotating plate 404 is fixedly connected to the bottom end of the second adjusting rod 403. The middle part of the pressing rotating plate 404 is rotatably connected to the frame 1 via a screw. The bottom end of the pressing rotating plate 404 is snapped into an inverted T-shaped transmission plate 405. The top end of the inverted T-shaped transmission plate 405 is rotatably connected to the frame 1 via bolts. The frame 1 has a T-shaped transmission plate 405 with one end of a tension spring 406 attached to both ends. A compaction frame 407 is symmetrically installed on one end of the frame 1. A compaction wheel 408 is symmetrically installed on the bottom end of the compaction frame 407 via a rotating shaft. The frame 1 has a compaction adjustment port 401 with an arc-shaped curved surface. The compaction wheel 408 is aligned with the trencher 2 to facilitate compaction of the soil by the compaction wheel 408. The other end of the tension spring 406 is attached to the top of the compaction frame 407 near the compaction wheel 408.

[0032] The working principle and usage process of this utility model are as follows: When it is necessary to adjust the depth of the sowing furrow, pull the handle 303 upward until the positioning pin 312 disengages from the positioning hole 311. At this time, the extrusion sleeve 313 extrudes the inner top surface of the extruder frame 1, the first adjusting rod 302 slides along the top of the actuating frame 304, the return spring 314 retracts, and pulls the first adjusting rod 302 along the depth adjustment port 301 to slide, thereby driving the actuating frame 304 to rotate around the fixed shaft 306. The actuating rod 307 will push the actuating plate 309 to move, thereby limiting the movement of the sowing furrow. The deep frame 308 rotates around the connection point, changing the height of the depth limiting wheel 310, thereby adjusting the height difference between the bottom of the trencher 2 and the bottom of the depth limiting wheel 310. This height difference is the trenching depth. Then, the handle 303 is released. Under the action of the return spring 314, the positioning pin 312 is inserted into the positioning hole 311 to position the handle 303 and prevent the handle 303 from shifting or shaking. The position of the trencher 2 remains unchanged. Only the height of the depth limiting wheel 310 is changed to prevent the trencher 2 connection from loosening and causing a decrease in trenching accuracy. The operation is simpler and less strenuous.

[0033] Next, pull the second adjusting rod 403 along the pressing adjustment port 401. The second adjusting rod 403 drives the pressing plate 404 to rotate around the connection point, which in turn drives the inverted T-shaped transmission plate 405 to rotate around the connection point, pulling the tension spring 406 to extend, driving the pressing frame 407 to rotate around the connection point, changing the height of the pressing wheel 408, so that the soil dug in the trench can be squeezed with appropriate force after the trenching and sowing are completed. After the adjustment is completed, the second adjusting rod 403 is locked into the locking slot 402 and fixed. The depth limiting component 3 and the pressing component 4 cooperate with each other to make the sowing effect better.

[0034] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A depth wheel adjustment mechanism comprising a frame (1), characterised in that: The frame (1) is symmetrically installed with an opener (2) in the middle, and a depth limiting assembly (3) is installed in the middle of the frame (1), which comprises a depth adjusting port (301), a first adjusting rod (302), a pull handle (303), a toggle bracket (304), a limiting ring (305), a fixed shaft (306), a toggle lever (307), a depth limiting bracket (308), a toggle plate (309), a depth limiting wheel (310), a positioning hole (311), a positioning pin (312), a compression sleeve (313) and a return spring (314); The frame (1) is provided with a depth adjusting port (301) on the top surface, the first adjusting rod (302) is movably installed inside the depth adjusting port (301), the pull handle (303) is welded at the top end of the first adjusting rod (302), and the first adjusting rod (302) is movably penetrated through the top end of the toggle bracket (304); The first adjusting rod (302) is fixedly sleeved with a limiting ring (305) inside the toggle bracket (304) at the bottom end, the fixed shaft (306) is rotatably installed at the bottom end of the toggle bracket (304), and the toggle levers (307) are welded on both sides of the toggle bracket (304); The frame (1) is connected with a depth limiting bracket (308) below the toggle bracket (304) through a rotating shaft, the toggle plate (309) is welded at the top end of the depth limiting bracket (308) close to the toggle lever (307), and the depth limiting wheel (310) is installed at the bottom end of the depth limiting bracket (308) through a rotating shaft.

2. A depth wheel limiting mechanism according to claim 1, wherein The positioning holes (311) are uniformly formed on both sides of the depth adjusting port (301) on the top surface of the frame (1), the positioning pins (312) are symmetrically welded on the bottom surface of the pull handle (303), the compression sleeve (313) is slidably sleeved in the frame (1) at the top end of the first adjusting rod (302), and the return spring (314) is sleeved between the first adjusting rod (302) and the limiting ring (305).

3. A depth wheel limiting mechanism according to claim 2, wherein The positioning holes (311) and the positioning pins (312) are in transition fit, and the frame (1) is provided with an arc curved surface at the depth adjusting port (301).

4. A depth wheel limiting mechanism according to claim 1, wherein The longitudinal section of the toggle bracket (304) is H-shaped, the number of the depth limiting bracket (308) is two, and the two depth limiting brackets (308) are symmetrically distributed on both sides of the depth limiting wheel (310).

5. A depth wheel limiting mechanism according to claim 1, wherein The frame (1) is installed with a pressing assembly (4) at one end, and the pressing assembly (4) comprises a pressing adjusting port (401), a bayonet (402), a second adjusting rod (403), a pressing rotating plate (404), an inverted T-shaped transmission plate (405), a tension spring (406), a pressing bracket (407) and a pressing wheel (408). The frame (1) is provided with a pressing adjustment opening (401) at one end, uniformly provided with a bayonet (402) at one side of the pressing adjustment opening (401), and the second adjusting rod (403) is movably installed in the pressing adjustment opening (401), the bottom end of the second adjusting rod (403) is fixedly connected with a pressing rotating plate (404), the middle part of the pressing rotating plate (404) is rotatably connected with the frame (1) through a screw rod, the bottom end of the pressing rotating plate (404) is clamped with an inverted T-shaped transmission plate (405), the top end of the inverted T-shaped transmission plate (405) is rotatably connected with the frame (1) through a bolt, the two ends of the inverted T-shaped transmission plate (405) are hung with one end of the tension spring (406), the frame (1) is symmetrically provided with a pressing frame (407) at one end, the bottom end of the pressing frame (407) is symmetrically provided with a pressing wheel (408) through a rotating shaft, and the other end of the tension spring (406) is hung above the pressing wheel (408) of the pressing frame (407).

6. A depth wheel limiting mechanism according to claim 5, wherein The frame (1) is provided with a pressing adjustment opening (401) at one end, uniformly provided with a bayonet (402) at one side of the pressing adjustment opening (401), and the second adjusting rod (403) is movably installed in the pressing adjustment opening (401), the bottom end of the second adjusting rod (403) is fixedly connected with a pressing rotating plate (404), the middle part of the pressing rotating plate (404) is rotatably connected with the frame (1) through a screw rod, the bottom end of the pressing rotating plate (404) is clamped with an inverted T-shaped transmission plate (405), the top end of the inverted T-shaped transmission plate (405) is rotatably connected with the frame (1) through a bolt, the two ends of the inverted T-shaped transmission plate (405) are hung with one end of the tension spring (406), the frame (1) is symmetrically provided with a pressing frame (407) at one end, the bottom end of the pressing frame (407) is symmetrically provided with a pressing wheel (408) through a rotating shaft, and the other end of the tension spring (406) is hung above the pressing wheel (408) of the pressing frame (407).

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