A device for weeding a cereal crop

Abstract

The utility model relates to the technical field of grain planting, especially relates to a weeding device for grain planting, including base, the left end of base is provided with weeding mechanism, the upper end of base is provided with adjusting groove, the lower portion of base is provided with cross link, the upper end of cross link is provided with sliding post, the side of cross link lower extreme is provided with rotary frame, the lower extreme of rotary frame is provided with low pressure wide width tire, the right end of base is fixedly installed with transmission case, the top of transmission case is provided with push -and -pull handrail, the inside of transmission case is provided with two -way screw rod, the outside of two -way screw rod is fixedly installed with worm wheel, the right side of worm wheel is provided with worm, the upper end of transmission case is provided with adjusting button, the utility model integrates wheel track adjusting mechanism in transmission case and adjusting bin far from ground, improves the reliability and service life of adjusting mechanism, increases tire ground contact area through low pressure wide width tire, so that the device can better adapt to the grain planting field ridge of different soil state.

Description

Technical Field

[0001] This utility model relates to the field of grain planting technology, and in particular to a weeding device for grain planting. Background Technology

[0002] During the grain planting process, in order to prevent weeds from competing with crops for water, nutrients and sunlight and affecting crop growth, weeding devices are needed to remove weeds.

[0003] For example, patent number CN221203176U discloses a weeding device for grain planting, which relates to the field of weeding device technology. In view of the problem that the existing technology spends a lot of time weeding by manpower and has low work efficiency, the following solution is proposed, which includes a drive mechanism and a weeding mechanism. The drive mechanism includes a power compartment, a roller set below the power compartment, an internal threaded block fixed to the top of the outer wall of one side of the power compartment, a baffle connected to one side of the internal threaded block, a fixed tube fixed to one end of the power compartment, and a drive compartment fixed to the bottom end of the fixed tube.

[0004] For example, patent number CN222017238U discloses a weeding device for grain planting, including a chassis, and a weeding mechanism is provided on the outer side of the chassis; the weeding mechanism includes a fixed frame, the bottom surface of the fixed frame is fixedly connected to the upper surface of the chassis, two telescopic rods are fixedly connected to the bottom surface of the fixed frame, the telescopic ends of the two telescopic rods are fixedly connected to a moving plate, the bottom surface of the moving plate is fixedly connected to a first rotary motor, and the output end of the first rotary motor is fixedly connected to a cutting blade.

[0005] While existing weeding devices for grain cultivation facilitate overall movement by incorporating casters, the complex and varied soil conditions in grain fields mean that the casters have limited adaptability to different terrains, leading to problems such as slippage, sinking, or excessive resistance. Furthermore, the wheel gauge adjustment mechanism is close to the ground and lacks effective protection, making it susceptible to intrusion of debris such as mud and straw during operation. This can cause difficulties in adjustment, jamming, or wear and tear on components, affecting the stability and lifespan of the device. Utility Model Content

[0006] To address the shortcomings of existing technologies, this utility model provides a weeding device for grain planting. It solves the problems of existing grain planting weeding devices, which are prone to slipping, sinking, or excessive resistance due to the complex and variable soil conditions in grain planting fields. In addition, their wheel track adjustment mechanism is close to the ground and lacks effective protection, making it easy for mud, straw, and other debris to enter during operation, affecting the stability and service life of the device.

[0007] The technical solution of this utility model is as follows: a weeding device for grain planting, including a base, a weeding mechanism at the left end of the base, an adjustment groove at the upper end of the base, a cross link at the lower end of the base, a sliding column at the upper end of the cross link, a rotating frame at the lower side of the cross link, a low-pressure wide tire at the lower end of the rotating frame, a transmission box fixedly installed at the right end of the base, a push-pull handle at the top of the transmission box, a double-acting lead screw inside the transmission box, a worm gear fixedly installed on the outer side of the double-acting lead screw, a worm gear on the right side of the worm gear, an adjustment knob at the upper end of the transmission box, adjustment chambers at the front and rear sides of the transmission box, a sliding groove at the lower end of the adjustment chamber, and a slider inside the sliding groove.

[0008] Preferably, the weeding mechanism includes a motor housing, an extension rod at the upper end of the motor housing, the extension rod being fixedly connected to the front end of the base, the output end of the extension rod being fixedly connected to the motor housing, a blade at the lower end of the motor housing, and a motor for driving the blade to rotate inside the motor housing.

[0009] Preferably, the adjusting groove is arranged vertically through the base, the sliding column and the inner side of the adjusting groove are slidably connected, a limit plate is fixedly installed at the upper end of the sliding column, and a limit ring is fixedly installed at the outer side of the sliding column.

[0010] Preferably, the cross link includes two cross-arranged movable plates, and the center point of the two movable plates and the lower end of the sliding column are rotatably connected by a connecting shaft.

[0011] Preferably, four rotating frames are arranged symmetrically front and back, with the upper end of the rotating frame and the end of the movable plate rotatably connected by a connecting shaft, and the low-pressure wide tire and the lower end of the rotating frame rotatably connected.

[0012] Preferably, the bidirectional lead screw is arranged to pass through the transmission box from front to back and is rotatably connected to the transmission box via bearings. The upper and lower ends of the worm are rotatably connected to the transmission box and mesh with the worm wheel. The adjusting knob is fixedly connected to the upper end of the worm.

[0013] Preferably, there are two symmetrically arranged adjustment chambers, which are fixedly connected to the transmission box. The lower end of the push-pull handle is fixedly connected to the adjustment chamber. The front and rear ends of the bidirectional lead screw extend to the inner side of the slide groove and are rotatably connected to the adjustment chamber. The left and right sides of the slider are slidably connected to the slide groove. The bidirectional lead screw and the slider are threadedly connected. The lower end of the slider and the cross connecting rod are rotatably connected through the connecting shaft.

[0014] The beneficial effects of this utility model are:

[0015] 1. This weeding device for grain planting controls the movement of two sliders in opposite directions by rotating the adjustment knob, which pushes the cross linkage to deflect and deform, thereby realizing the rapid adjustment of the wheel spacing. The wheel spacing adjustment mechanism is integrated into the transmission box and adjustment chamber, which are far away from the ground, effectively avoiding the wear, jamming or failure of the adjustment mechanism caused by the intrusion of field debris such as soil and straw, thus improving the reliability and service life of the adjustment mechanism.

[0016] 2. This weeding device for grain planting significantly increases the tire contact area by using low-pressure wide tires instead of traditional omnidirectional wheels. This allows the device to better adapt to grain planting ridges with different soil conditions, effectively reducing the occurrence of sinking, slipping, or excessive travel resistance in soft, muddy, or slippery grain planting ridges. It is especially suitable for dryland crops such as wheat and corn, as well as some semi-wet field operation scenarios.

[0017] This device is based on an improvement of existing equipment, so the improvement cost is relatively low and it will not cause a large amount of existing equipment to be discarded. It ensures the processing effect while reducing the investment in improvement costs, making it suitable for large-scale production. Attached Figure Description

[0018] Figure 1 The diagram shown is a three-dimensional structural representation of the weeding device for grain cultivation according to this utility model. Figure 1 ;

[0019] Figure 2 The diagram shown is a three-dimensional structural representation of the weeding device for grain cultivation according to this utility model. Figure 2 ;

[0020] Figure 3 The diagram shown is a three-dimensional structural schematic of the base and weeding mechanism of this utility model.

[0021] Figure 4 The diagram shown is a three-dimensional structural schematic of the cross linkage and rotating frame of this utility model.

[0022] Figure 5 The diagram shown is a three-dimensional cross-sectional view of the transmission box and adjustment compartment of this utility model.

[0023] Explanation of reference numerals in the attached drawings: 1. Base; 2. Weeding mechanism; 201. Motor box; 202. Telescopic rod; 203. Blade; 3. Adjustment groove; 4. Cross linkage; 401. Movable plate; 5. Sliding column; 501. Limiting plate; 502. Limiting ring; 6. Rotating frame; 7. Low-pressure wide tire; 8. Transmission box; 9. Push-pull handle; 10. Two-way lead screw; 11. Worm gear; 12. Worm; 13. Adjustment knob; 14. Adjustment chamber; 15. Slide groove; 16. Slider. Detailed Implementation

[0024] 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.

[0025] Please see Figures 1-5 This utility model provides an embodiment of a weeding device for grain cultivation, comprising a base 1, a weeding mechanism 2 at the left end of the base 1, an adjustment groove 3 at the upper end of the base 1, a cross link 4 at the lower end of the base 1, a sliding column 5 at the upper end of the cross link 4, a rotating frame 6 at the lower side of the cross link 4, a low-pressure wide tire 7 at the lower end of the rotating frame 6, a transmission box 8 fixedly installed at the right end of the base 1, a push-pull handle 9 above the transmission box 8, a double-acting lead screw 10 inside the transmission box 8, a worm gear 11 fixedly installed on the outer side of the double-acting lead screw 10, a worm 12 on the right side of the worm gear 11, an adjustment knob 13 at the upper end of the transmission box 8, adjustment chambers 14 on the front and rear sides of the transmission box 8, a sliding groove 15 at the lower end of the adjustment chamber 14, and a slider 16 inside the sliding groove 15.

[0026] Please see Figures 1-4 In this embodiment, the weeding mechanism 2 includes a motor housing 201. A telescopic rod 202 is provided at the upper end of the motor housing 201. The telescopic rod 202 is fixedly connected to the front end of the base 1. The output end of the telescopic rod 202 is fixedly connected to the motor housing 201. A blade 203 is provided at the lower end of the motor housing 201. A motor for driving the blade 203 to rotate is provided inside the motor housing 201. An adjusting groove 3 is vertically through the base 1. A sliding column 5 is slidably connected to the inner side of the adjusting groove 3. A limit plate 501 is fixedly installed at the upper end of the sliding column 5, and a limit ring 502 is fixedly installed at the outer side of the sliding column 5. A cross link 4... The device includes two intersecting movable plates 401, the center point of which is rotatably connected to the lower end of the sliding column 5 via a connecting shaft. Four rotating frames 6 are symmetrically arranged front and back, the upper end of which is rotatably connected to the end of the movable plate 401 via a connecting shaft. Low-pressure wide tires 7 are rotatably connected to the lower end of the rotating frames 6. The device is propelled by a push-pull handle 9. The low-pressure wide tires 7 can effectively improve the stability of the device's movement, allowing the device to better adapt to grain planting ridges with different soil conditions. The motor in the motor box 201 drives the blades 203 to rotate at high speed, achieving efficient removal of weeds in the field.

[0027] Please see Figures 2-5In this embodiment, the bidirectional lead screw 10 is arranged through the transmission box 8 from front to back and is rotatably connected to the transmission box 8 via bearings. The upper and lower ends of the worm gear 12 are rotatably connected to the transmission box 8 and mesh with the worm wheel 11. The adjusting knob 13 is fixedly connected to the upper end of the worm gear 12. Two adjusting chambers 14 are symmetrically arranged from front to back and are fixedly connected to the transmission box 8. The lower end of the push-pull handle 9 is fixedly connected to the adjusting chamber 14. The front and rear ends of the bidirectional lead screw 10 extend to the inner side of the slide groove 15 and are rotatably connected to the adjusting chamber 14. The slider 16... The left and right sides are slidably connected to the slide groove 15. The double-acting screw 10 and the slider 16 are threadedly connected. The lower end of the slider 16 and the cross link 4 are rotatably connected through the connecting shaft. The worm gear 12 is driven to rotate by rotating the adjusting knob 13, which in turn drives the worm wheel 11 that meshes with it to rotate, thereby driving the double-acting screw 10 to rotate. The two sliders 16 move towards each other along the slide groove 15 under the transmission of the double-acting screw 10, pushing the cross link 4 to deflect and deform. The sliding column 5 slides along the adjusting groove 3 in coordination with the deformation of the cross link 4, so as to realize the rapid adjustment of the wheel set spacing.

[0028] In use, rotating the adjustment knob 13 drives the worm gear 12 to rotate, which in turn drives the meshing worm wheel 11 to rotate, thereby driving the bidirectional lead screw 10 to rotate. The two sliders 16 move towards each other along the slide groove 15 under the transmission of the bidirectional lead screw 10, pushing the cross link 4 to deflect and deform. The sliding column 5 slides along the adjustment groove 3 in coordination with the deformation of the cross link 4, realizing the rapid adjustment of the wheel spacing, which is convenient for quick adaptation to field ridges of different widths. The working height of the blade 203 is adjusted by the telescopic rod 202 to complete the adjustment and adaptation of the weeding mechanism 2. During operation, the device is pushed forward by pushing and pulling the handle 9. The low-pressure wide tire 7 can effectively improve the stability of the device's movement, so that the device can better adapt to grain planting ridges with different soil conditions. The motor in the motor box 201 drives the blade 203 to rotate at high speed, realizing the efficient removal of weeds in the field.

[0029] Compared to the prior art (patent number CN221203176U) and (patent number CN222017238U), which use casters for easy overall propulsion, this device uses low-pressure wide-width tires 7 instead of traditional casters, significantly increasing the tire's contact area. This allows the device to better adapt to different soil conditions in grain planting fields, effectively reducing the likelihood of the device sinking, slipping, or experiencing excessive resistance in soft, muddy, or slippery grain planting fields. Furthermore, compared to the prior art (patent number CN221203176U), which uses a single-sided wheel for propulsion, this device... The application proposes a four-wheel support system, which makes the device's propulsion more stable and effortless. Compared to the prior art (patent number CN222017238U), which places the wheel track adjustment mechanism close to the ground and lacks effective protection, this device controls the two sliders 16 to move towards each other by rotating the adjustment knob 13, which pushes the cross linkage 4 to deflect and deform, thereby achieving rapid adjustment of the wheel track spacing. The wheel track adjustment mechanism is integrated into the transmission box 8 and adjustment chamber 14, which are far from the ground, effectively avoiding wear, jamming, or failure caused by the intrusion of soil, straw, and other field debris, thus improving the reliability and service life of the adjustment mechanism.

[0030] Furthermore, any content not described in detail in this specification is existing technology known to those skilled in the art.

[0031] 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 weeding device for grain cultivation, comprising a base (1) and a weeding mechanism (2) disposed at the left end of the base (1), characterized in that: An adjustment groove (3) is provided at the upper end of the base (1). A cross link (4) is provided at the lower end of the base (1). A sliding column (5) is provided at the upper end of the cross link (4). A rotating frame (6) is provided on the side of the lower end of the cross link (4). A low-pressure wide tire (7) is provided at the lower end of the rotating frame (6). A transmission box (8) is fixedly installed at the right end of the base (1). A push-pull handle (9) is provided above the transmission box (8). A two-way screw (10) is provided inside the transmission box (8). A worm wheel (11) is fixedly installed on the outside of the two-way screw (10). A worm (12) is provided on the right side of the worm wheel (11). An adjustment knob (13) is provided at the upper end of the transmission box (8). An adjustment chamber (14) is provided on the front and rear sides of the transmission box (8). A sliding groove (15) is provided at the lower end of the adjustment chamber (14). A slider (16) is provided on the inner side of the sliding groove (15).

2. The weeding device for grain cultivation according to claim 1, characterized in that: The weeding mechanism (2) includes a motor box (201), a telescopic rod (202) is provided at the upper end of the motor box (201), the telescopic rod (202) is fixedly connected to the front end of the base (1), the output end of the telescopic rod (202) is fixedly connected to the motor box (201), a blade (203) is provided at the lower end of the motor box (201), and a motor for driving the blade (203) to rotate is provided inside the motor box (201).

3. The weeding device for grain cultivation according to claim 1, characterized in that: The adjustment groove (3) is arranged vertically through the base (1). The sliding column (5) and the inner side of the adjustment groove (3) are slidably connected. The upper end of the sliding column (5) is fixedly installed with a limit plate (501), and the outer side of the sliding column (5) is fixedly installed with a limit ring (502).

4. The weeding device for grain cultivation according to claim 1, characterized in that: The cross link (4) includes two cross-arranged movable plates (401), the center point of the two movable plates (401) and the lower end of the sliding column (5) are rotatably connected by a connecting shaft.

5. A weeding device for grain cultivation according to claim 4, characterized in that: There are four rotating frames (6) arranged symmetrically in front and behind. The upper end of the rotating frame (6) and the end of the movable plate (401) are rotatably connected by a connecting shaft. The low-pressure wide tire (7) and the lower end of the rotating frame (6) are rotatably connected.

6. The weeding device for grain cultivation according to claim 1, characterized in that: The double-acting lead screw (10) is arranged to pass through the transmission box (8) from front to back and is rotatably connected to the transmission box (8) through bearings. The upper and lower ends of the worm (12) are rotatably connected to the transmission box (8) and mesh with the worm wheel (11). The adjusting knob (13) is fixedly connected to the upper end of the worm (12).

7. A weeding device for grain cultivation according to claim 1, characterized in that: There are two symmetrical adjustment chambers (14) and they are fixedly connected to the transmission box (8). The lower end of the push-pull armrest (9) is fixedly connected to the adjustment chamber (14). The front and rear ends of the double-acting screw (10) extend to the inside of the slide groove (15) and are rotatably connected to the adjustment chamber (14). The left and right sides of the slider (16) are slidably connected to the slide groove (15). The double-acting screw (10) and the slider (16) are threadedly connected. The lower end of the slider (16) and the cross link (4) are rotatably connected through the connecting shaft.

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