A light and portable weeder for soybean fields

Abstract

The utility model discloses a portable secondary sowing soybean field cultivator, including cultivator body, the cultivator body includes two U shape forecarriage, and the front side inner wall and the back inner wall of U shape forecarriage are rotatoryly installed with rubber ground wheel, and the whole device can be moved through rubber ground wheel, and the right side of rubber ground wheel is equipped with hoeing sword and plough head, and hoeing sword sets up in the left side of plough head, and is used for the weeding and cultivates operation to soybean field through hoeing sword and plough head. The utility model discloses a series of structure's setting, can carry out weeding and cultivates operation to two rows different interval's soybean field simultaneously, improves weeding efficiency and application scope, and can raise operation to hoeing sword and plough head after using, and then when moving the whole device, personnel need not to lift one end and move, can directly horizontal push, thereby reduces the labor intensity, and personnel operation is convenient.

Description

Technical Field

[0001] This utility model relates to the field of weeding machine technology, and in particular to a lightweight weeding machine for replanting soybean fields. Background Technology

[0002] Replanting soybeans after wheat harvest is a common farming method in the Huang-Huai-Hai Plain. However, the growing season for summer-sown soybeans, July and August, coincides with a period of high temperatures and heavy rainfall, leading to rapid weed growth in the fields. Each rainfall can cause a resurgence of weeds. Herbicides for soybean fields are not yet widely available, especially since soybeans are sensitive during the flowering stage and cannot be used. Manual weeding is time-consuming and labor-intensive, often resulting in weeds sprouting again before the first application is complete. Furthermore, in the rainy season, manual weeding is incomplete, as the next rain often revives the weeds, making weed control ineffective. Existing weeding machinery is mostly mechanical and unsuitable after soybean emergence, and some are also quite cumbersome. To address these issues, a search was conducted, and the publication number CN2078851 was found. 34U discloses a lightweight inter-row cultivation and weeding machine for soybean replanting, which aims to effectively improve the weeding efficiency in soybean fields and loosen the soil to achieve the function of inter-row cultivation. The device includes a handle, a main support, an auxiliary support, a plow, a weeding blade, a front fork, a rubber ground wheel, a fixed frame, a front fixed rod, and a rear fixed rod. The rubber ground wheel is screwed to the front end of the front fork. The front fork and the fixed frame are welded together. The lower ends of the main support and the auxiliary support are welded to the fixed frame, respectively. The upper end of the auxiliary support is welded to the main support. The handle is welded to the top of the main support. The weeding blade is welded to the lower end of the front fixed rod under the fixed frame. The plow is welded to the lower end of the rear fixed rod under the fixed frame. The front fixed rod is closer to the front fork.

[0003] The lightweight inter-row weeding machine for replanted soybean fields disclosed in the aforementioned patent can be moved by pushing the entire device with a handle to perform weeding and inter-row cultivation operations. It is compact and lightweight, but it still has the following shortcomings in use: 1. It only has one set of weeding blades and plowshares, and it can only weed a single row of soybeans at a time during operation, resulting in low weeding efficiency; 2. The fixed position of the weeding blades and plowshares means that when moving the entire device after operation, one end needs to be lifted to avoid wear and tear on the weeding blades and plowshares, which is relatively laborious and inconvenient. In view of the above, this application proposes a lightweight inter-row weeding machine for replanted soybean fields. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing a lightweight tillage and weeding machine for replanting soybean fields.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A lightweight inter-row cultivation and weeding machine for replanted soybean fields includes a machine body. The machine body includes two U-shaped front forks. A rubber grounding wheel is rotatably mounted between the inner front and rear walls of the U-shaped front forks, allowing the entire device to move. A weeding blade and a plowshare are located on the right side of the rubber grounding wheel, with the weeding blade positioned to the left of the plowshare. The weeding blade and plowshare are used for weeding and inter-row cultivation in the soybean field. The machine also includes:

[0007] The U-shaped mounting base is located on the right side of the two U-shaped front forks. An inclined T-shaped handle is fixedly installed on the top of the U-shaped mounting base. The entire device can be moved by pushing the T-shaped handle. The left side of the U-shaped mounting base is fixedly connected to the right side of the rear U-shaped front fork.

[0008] There are two movable plates, which are fixedly connected to the right side of the corresponding U-shaped front fork. The right side of the movable plate is fixedly connected to an inclined soil retaining plate, which is used to retain soil during weeding and cultivation to reduce the situation of soil splashing onto personnel. The top of the rear movable plate is fixedly connected to the bottom of the U-shaped mounting base.

[0009] The guide mechanism is fixedly installed on the top inner wall of the U-shaped mounting base and the top of the front movable plate;

[0010] The lifting and adjusting mechanism consists of two sets, which are respectively installed on the corresponding movable plates and fixedly connected to the corresponding weeding blades and plowshares. The lifting and adjusting mechanism is used to raise the weeding blades and plowshares.

[0011] The spacing adjustment mechanism is installed between the two U-shaped forks on their closest sides. The spacing adjustment mechanism is used to adjust the distance between the two U-shaped forks.

[0012] Preferably, the guiding mechanism includes two guide rods fixedly installed on the inner wall of the top of the U-shaped mounting base. A rectangular block is slidably sleeved on the guide rod. The bottom of the rectangular block is fixedly connected to the top of the front movable plate. The guide rod and the rectangular block cooperate to provide lateral guidance for the movable plate.

[0013] Preferably, the lifting and adjusting mechanism includes a first T-shaped screw rotatably mounted on the bottom of the movable plate, a U-shaped moving rod threaded onto the first T-shaped screw, and the threaded connection between the first T-shaped screw and the U-shaped moving rod enables the U-shaped moving rod to move vertically while the first T-shaped screw rotates. The two ends of the U-shaped moving rod are respectively fixedly connected to the corresponding hoe blade and plowshare. The vertical movement of the U-shaped moving rod drives the hoe blade and plowshare to move vertically. Two rectangular positioning rods are fixedly connected to the bottom of the movable plate, and the U-shaped moving rod is slidably mounted on the corresponding two rectangular positioning rods. The rectangular positioning rods provide vertical guidance for the corresponding U-shaped moving rods.

[0014] Preferably, the spacing adjustment mechanism includes a rectangular positioning tube fixedly connected to the front side of the U-shaped fork at the rear. A first positioning rod is slidably sleeved inside the rectangular positioning tube. The front end of the first positioning rod is fixedly connected to the rear side of the U-shaped fork at the front. Fixing blocks are fixedly connected to the top of the rectangular positioning tube and the top of the U-shaped fork at the front. An internally threaded tube is fixedly connected to the rear side of the fixing block at the front. A second T-shaped screw is threaded onto the internally threaded tube. The threaded connection allows the internally threaded tube to move laterally while the second T-shaped screw rotates. The fixing block at the rear is rotatably sleeved on the second T-shaped screw.

[0015] Preferably, a telescopic rubber sleeve is bonded and fixed between the two fixing blocks on their adjacent sides. The internal threaded tube and the second T-shaped screw are both located inside the telescopic rubber sleeve. The telescopic rubber sleeve is used to shield the internal threaded tube and the second T-shaped screw, reducing the possibility of soil entering the thread gap between the second T-shaped screw and the internal threaded tube.

[0016] Preferably, the top of the guide rod is fixedly connected to two connecting blocks, and the top of the connecting blocks is fixedly connected to the top inner wall of the U-shaped mounting base.

[0017] Preferably, the top inner wall of the U-shaped moving rod is provided with a threaded hole, which is threadedly connected to the corresponding first T-shaped screw. Positioning grooves are provided on both sides of the top of the U-shaped moving rod, and the inner wall of the positioning groove slides in contact with the outer side of the corresponding rectangular positioning rod. Limiting holes are provided on the inner walls of the two opposite positioning grooves on their respective sides. Limiting blocks are fixedly connected to the opposite sides of the two opposite rectangular positioning rods on their respective sides. The limiting blocks slide in connection with the corresponding limiting holes, and the limiting blocks cooperate with the corresponding limiting holes to limit and prevent the U-shaped moving rod from detaching. A knob is fixedly connected to both the top and bottom of the first T-shaped screw, and the first T-shaped screw is rotated and adjusted by the knob.

[0018] Compared with existing technologies, the beneficial effects of this utility model are:

[0019] 1. Through the spacing adjustment mechanism and the cooperation of two sets of plows and two sets of weeding blades, weeding and cultivation operations can be carried out on two rows of soybean fields at the same time. The spacing between the two sets of weeding blades and the two sets of plows can be adjusted, making it suitable for weeding operations on soybean fields with different spacing, improving weeding efficiency and applicability.

[0020] 2. With the lifting and adjusting mechanism, the hoe blade and plow can be raised and separated from the ground after use. Then, when moving the entire device, it can be pushed horizontally directly without the need for personnel to lift one end to move it, thus reducing labor intensity.

[0021] This invention, through a series of structural designs, enables simultaneous weeding and cultivation of two rows of soybeans with different spacing, improving weeding efficiency and applicability. Furthermore, the weeding blade and plow can be raised after use, eliminating the need for personnel to lift one end when moving the entire device; it can be pushed horizontally directly, thereby reducing labor intensity and facilitating operation. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the structure of a lightweight inter-row soybean field weeding and cultivating machine proposed in this utility model;

[0023] Figure 2 This is a schematic diagram of the main cross-sectional structure of a lightweight soybean field weeding and replanting machine proposed in this utility model;

[0024] Figure 3 for Figure 2 A magnified structural diagram of part A in the middle;

[0025] Figure 4 This is a left-side cross-sectional view of the connection between the U-shaped front fork, rubber ground wheel, and spacing adjustment mechanism in a lightweight soybean replanting weeding machine proposed in this utility model.

[0026] In the diagram: 1. U-shaped mounting base; 2. U-shaped front fork; 3. Rubber ground wheel; 4. T-shaped handle; 5. Lifting and adjusting mechanism; 501. U-shaped moving rod; 502. T-shaped screw; 503. Rectangular positioning rod; 504. Plowshare; 505. Cultivator blade; 6. Guide mechanism; 601. Rectangular block; 602. Guide rod; 7. Moving plate; 8. Retaining plate; 9. Spacing adjustment mechanism; 901. Rectangular positioning tube; 902. First positioning rod; 903. Fixing block; 904. T-shaped screw; 905. Internally threaded tube; 906. Telescopic rubber sleeve. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0028] Reference Figures 1-4A lightweight inter-row cultivation and weeding machine for soybean fields undergoing replanting includes a machine body. The machine body comprises two U-shaped front forks 2. Rubber grounding wheels 3 are rotatably mounted between the inner front and rear walls of the U-shaped front forks 2, allowing the entire device to move. Circular holes are provided on both the inner front and rear walls of the U-shaped front forks 2, and first bearings are fixedly fitted within these holes. A common support shaft is fixedly fitted within the inner rings of the two first bearings located on the same U-shaped front fork 2. Multiple connecting rods are fixedly connected between the outer side of the support shaft and the corresponding rubber grounding wheel 3, enabling connection between the support shaft and the corresponding rubber grounding wheel 3. A weeding blade 505 and a plow head 504 are located on the right side of the rubber grounding wheel 3, with the weeding blade 505 positioned to the left of the plow head 504. The weeding blade 505 and plow head 504 are used for weeding and inter-row cultivation in the soybean field. The machine also includes:

[0029] U-shaped mounting base 1 is set on the right side of the two U-shaped front forks 2. An inclined T-shaped handle bar 4 is fixedly installed on the top of the U-shaped mounting base 1. The entire device can be moved by pushing the T-shaped handle bar 4. Two inclined supports are fixedly connected to the top of the U-shaped mounting base 1. The right end of the inclined support is fixedly connected to the left side of the T-shaped handle bar 4. The left side of the U-shaped mounting base 1 is fixedly connected to the right side of the rear U-shaped front fork 2.

[0030] There are two movable plates 7, which are fixedly connected to the right side of the corresponding U-shaped front fork 2. The right side of the movable plate 7 is fixedly connected to an inclined soil retaining plate 8. The soil retaining plate 8 is used to retain soil and reduce the situation of soil splashing onto personnel during weeding and cultivation. The top of the rear movable plate 7 is fixedly connected to the bottom of the U-shaped mounting base 1.

[0031] The guide mechanism 6 is fixedly installed on the top inner wall of the U-shaped mounting base 1 and the top of the front movable plate 7;

[0032] The guiding mechanism 6 includes two guide rods 602 fixedly installed on the top inner wall of the U-shaped mounting base 1. Two connecting blocks are fixedly connected to the top of the guide rods 602. The top of the connecting blocks is fixedly connected to the top inner wall of the U-shaped mounting base 1. The connection between the guide rods 602 and the U-shaped mounting base 1 is realized through the connecting blocks. A rectangular block 601 is slidably sleeved on the guide rods 602. A guide hole is opened on the front side of the rectangular block 601. The inner wall of the guide hole slides in contact with the outer side of the corresponding guide rod 602. The bottom of the rectangular block 601 is fixedly connected to the top of the front movable plate 7. The guide rods 602 and the rectangular block 601 cooperate to provide a lateral guiding effect for the movable plate 7.

[0033] The spacing adjustment mechanism 9 is installed between the two U-shaped front forks 2 on their sides that are close to each other. The spacing adjustment mechanism 9 is used to adjust the distance between the two U-shaped front forks 2.

[0034] The spacing adjustment mechanism 9 includes a rectangular positioning tube 901 fixedly connected to the front side of the U-shaped front fork 2 at the rear. A first positioning rod 902 is slidably sleeved inside the rectangular positioning tube 901. A sliding hole is provided on the bottom inner wall of the rectangular positioning tube 901. A slider that slides through the sliding hole is fixedly connected to the bottom of the first positioning rod 902. The slider cooperates with the sliding hole to limit and prevent the rectangular positioning tube 901 from detaching. The front end of the first positioning rod 902 is fixedly connected to the rear side of the U-shaped front fork 2 at the front. Fixing blocks 903 are fixedly connected to the top of the rectangular positioning tube 901 and the top of the U-shaped front fork 2 at the front. An internally threaded tube 905 is fixedly connected to the rear side of the fixing block 903 at the front. A second T-shaped screw 904 is internally threaded onto the internally threaded tube 905. The threaded connection allows for the adjustment of the second T-shaped screw 904. While the T-shaped screw 904 rotates, it drives the internally threaded tube 905 to move laterally. The rear fixing block 903 is rotatably sleeved on the second T-shaped screw 904. The front side of the rear fixing block 903 has a bearing hole, and a second bearing is fixedly sleeved in the bearing hole. The inner side of the inner ring of the second bearing is fixedly connected to the outer side of the second T-shaped screw 904. The second bearing serves to allow the second T-shaped screw 904 to be rotated and installed. A telescopic rubber sleeve 906 is bonded and fixed between the two fixing blocks 903 on their adjacent sides. The internally threaded tube 905 and the second T-shaped screw 904 are both located inside the telescopic rubber sleeve 906. The telescopic rubber sleeve 906 is used to shield the internally threaded tube 905 and the second T-shaped screw 904, reducing the possibility of soil entering the thread gaps of the second T-shaped screw 904 and the internally threaded tube 905.

[0035] In this implementation scheme: when adjusting the distance between the two rubber grounding wheels 3 according to the spacing between the two rows of soybeans, the second T-shaped screw 904 is rotated in the forward direction so that it rotates within the internal threaded tube 905, while simultaneously driving the internal threaded tube 905 forward. The internal threaded tube 905, through the corresponding fixing block 903, drives the front U-shaped fork 2 forward, which in turn drives the corresponding rubber grounding wheel 3 forward. Simultaneously, the front U-shaped fork 2 moves forward, also driving the corresponding moving plate 7 forward. The front moving plate 7 then drives the corresponding rubber grounding wheel 3... The two rectangular blocks 601 move forward on the corresponding guide rods 602 respectively. While the moving plate 7 moves, it also drives the weeding blades 505 and the plow head 504 to move forward, so that the distance between the two weeding blades 505 and the two plow heads 504 that are opposite each other changes. After adjusting according to the row spacing of soybeans, the rotation of the second T-shaped screw 904 can be stopped. The adjustable distance between the two weeding blades 505 and the two plow heads 504 allows for the simultaneous weeding and cultivation of two rows of soybeans with different spacing.

[0036] After adjustment, when weeding, the entire device can be moved by using the T-shaped handle 4 and two rubber grounding wheels 3. During the movement, weeding is carried out by using the hoe blade 505, and the soybean field is cultivated by using the plow head 504.

[0037] It should be noted that the weeding and cultivation effects achieved by moving the hoe blade 505 and the plow head 504 are technologies disclosed in the prior art and have been disclosed in announcement number CN207885134U, so they will not be elaborated on here.

[0038] Furthermore:

[0039] A lightweight inter-row tillage and weeding machine for replanted soybean fields also includes a lifting and adjusting mechanism 5, which consists of two sets, respectively mounted on corresponding movable plates 7 and fixedly connected to corresponding weeding blades 505 and plow heads 504. The lifting and adjusting mechanism 5 includes a first T-shaped screw 502 rotatably mounted on the bottom of the movable plate 7. Knobs are fixedly connected to both the top and bottom ends of the first T-shaped screw 502, allowing for rotational adjustment. A first through hole is provided at the bottom of the movable plate 7, and a third bearing is fixedly fitted inside the first through hole. The inner side of the inner ring of the third bearing is fixedly connected to the outer side of the corresponding first T-shaped screw 502, providing a means for the rotational installation of the corresponding first T-shaped screw 502. A U-shaped moving rod 501 is threaded onto the first T-shaped screw 502, and a threaded hole is provided on the top inner wall of the U-shaped moving rod 501, which is threadedly connected to the corresponding first T-shaped screw 502. This threaded connection between the first T-shaped screw 502 and the U-shaped moving rod 501 allows for rotational adjustment of the first T-shaped screw 502. While the screw 502 rotates, it drives the U-shaped moving rod 501 to move vertically. The two ends of the U-shaped moving rod 501 are fixedly connected to the corresponding hoe blade 505 and plow head 504, respectively. The vertical movement of the U-shaped moving rod 501 drives the hoe blade 505 and plow head 504 to move vertically. Two rectangular positioning rods 503 are fixedly connected to the bottom of the moving plate 7. The U-shaped moving rod 501 is slidably sleeved on the corresponding two rectangular positioning rods 503. Positioning grooves are opened on both sides of the top of the U-shaped moving rod 501. The inner wall of the positioning groove is in sliding contact with the outer side of the corresponding rectangular positioning rod 503. Limiting holes are opened on the inner wall of the two opposite positioning grooves on the side away from each other. Limiting blocks are fixedly connected to the opposite sides of the two opposite rectangular positioning rods 503. The limiting blocks are slidably connected to the corresponding limiting holes. The limiting blocks and the corresponding limiting holes cooperate to limit and prevent the U-shaped moving rod 501 from falling off. The rectangular positioning rods 503 provide vertical guidance for the corresponding U-shaped moving rods 501.

[0040] In this implementation plan: after the weeding and cultivation operation is completed, the T-shaped screw 502 is rotated in the forward direction. While the T-shaped screw 502 is rotating, it can drive the corresponding U-shaped moving rod 501 to slide upward on the two rectangular positioning rods 503. The U-shaped moving rod 501 drives the weeding blade 505 and the plow head 504 to move upward and separate from the ground. Thus, during the process of moving the entire device, it can be pushed horizontally directly without the need for personnel to lift one end for movement.

[0041] Working Principle: During use, when performing weeding and cultivation, first adjust the distance between the two rubber grounding wheels 3 according to the spacing between the two rows of soybeans. During adjustment, rotate the second T-shaped screw 904 clockwise. The second T-shaped screw 904 rotates within the internal threaded tube 905, simultaneously driving the internal threaded tube 905 forward. The internal threaded tube 905, through the corresponding fixing block 903, drives the front U-shaped fork 2 forward, which in turn drives the corresponding rubber grounding wheel 3 forward. As the front rubber grounding wheel 3 moves forward, the distance between the two rubber grounding wheels 3 changes. Once the distance between the two rubber grounding wheels 3 is adjusted according to the row spacing of the soybeans, stop rotating the second T-shaped screw 904. As the U-shaped fork 2 moves forward, it also drives the corresponding moving plate 7 to move forward. The moving plate 7 drives the two rectangular blocks 601 to move forward on the corresponding guide rods 602. The moving plate 7 drives the weeding blades 505 and the plow heads 504 to move forward in sequence through the corresponding first T-shaped screw 502 and U-shaped moving rod 501, so that the distance between the two weeding blades 505 and the two plow heads 504 that are opposite each other changes. By setting up one weeding blade 505 and two plow heads 504, and the distance between the two weeding blades 505 and the two plow heads 504 that are opposite each other can be adjusted, weeding and cultivation operations can be carried out on two rows of soybean fields with different spacing at the same time, improving weeding efficiency and applicability.

[0042] After adjustment, when weeding, the entire device can be moved by using the T-shaped handle 4 in conjunction with two rubber ground wheels 3. During the movement, weeding is carried out by using the hoe blade 505, and the soybean field is cultivated by using the plow head 504 after weeding.

[0043] After weeding and cultivation are completed, the T-shaped screw 502 is rotated forward. Under the action of the threaded hole on the U-shaped moving rod 501, the T-shaped screw 502 rotates and drives the corresponding U-shaped moving rod 501 to slide upward on the two rectangular positioning rods 503. The U-shaped moving rod 501 drives the weeding blade 505 and the plow head 504 to move upward and separate from the ground. After the weeding blade 505 and the plow head 504 are separated from the ground, the entire device can be moved horizontally without the need for personnel to lift one end to move it, reducing labor intensity and facilitating operation.

[0044] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A lightweight inter-row weeding machine for replanted soybean fields, comprising an inter-row weeding machine body, wherein the inter-row weeding machine body includes two U-shaped front forks (2), a rubber grounding wheel (3) is rotatably mounted between the front inner wall and the rear inner wall of the U-shaped front forks (2), a weeding blade (505) and a plow head (504) are provided on the right side of the rubber grounding wheel (3), and the weeding blade (505) is located on the left side of the plow head (504), characterized in that, Also includes: A U-shaped mounting base (1) is set on the right side of the two U-shaped forks (2). A T-shaped handlebar (4) is fixedly installed on the top of the U-shaped mounting base (1). The left side of the U-shaped mounting base (1) is fixedly connected to the right side of the rear U-shaped fork (2). There are two movable plates (7), which are fixedly connected to the right side of the corresponding U-shaped front fork (2). An inclined retaining plate (8) is fixedly connected to the right side of the movable plate (7). The top of the movable plate (7) on the rear side is fixedly connected to the bottom of the U-shaped mounting base (1). The guide mechanism (6) is fixedly installed on the top inner wall of the U-shaped mounting base (1) and the top of the front movable plate (7); The lifting adjustment mechanism (5) consists of two sets, which are respectively installed on the corresponding movable plates (7) and fixedly connected to the corresponding hoe blades (505) and plows (504); The spacing adjustment mechanism (9) is installed between the two U-shaped forks (2) on their closest sides.

2. The light portable weeding machine for soybean field according to claim 1, wherein The guiding mechanism (6) includes two guide rods (602) fixedly installed on the inner wall of the top of the U-shaped mounting base (1). A rectangular block (601) is slidably sleeved on the guide rod (602). The bottom of the rectangular block (601) is fixedly connected to the top of the front movable plate (7).

3. The light portable weeding machine for soybean field according to claim 1, wherein The lifting adjustment mechanism (5) includes a first T-shaped screw (502) rotatably installed at the bottom of the movable plate (7). A U-shaped moving rod (501) is threaded on the first T-shaped screw (502). The two ends of the U-shaped moving rod (501) are fixedly connected to the corresponding hoe blade (505) and plow head (504) respectively. Two rectangular positioning rods (503) are fixedly connected to the bottom of the movable plate (7). The U-shaped moving rod (501) is slidably sleeved on the corresponding two rectangular positioning rods (503).

4. The light weight, multi-crop soybean field cultivator of claim 1, wherein, The spacing adjustment mechanism (9) includes a rectangular positioning tube (901) fixedly connected to the front side of the U-shaped fork (2) on the rear side. A first positioning rod (902) is slidably sleeved inside the rectangular positioning tube (901). The front end of the first positioning rod (902) is fixedly connected to the rear side of the U-shaped fork (2) on the front side. A fixing block (903) is fixedly connected to the top of the rectangular positioning tube (901) and the top of the U-shaped fork (2) on the front side. An internal threaded tube (905) is fixedly connected to the rear side of the fixing block (903) on the front side. A second T-shaped screw (904) is internally threaded on the internal threaded tube (905). The fixing block (903) on the rear side is rotatably sleeved on the second T-shaped screw (904).

5. The light portable weeding machine for soybean field according to claim 4, wherein A telescopic rubber sleeve (906) is bonded and fixed between the two fixed blocks (903) on their adjacent sides. The internal threaded tube (905) and the second T-shaped screw (904) are both located inside the telescopic rubber sleeve (906).

6. The light weight, multi-crop soybean field cultivator of claim 2, wherein, The top of the guide rod (602) is fixedly connected to two connecting blocks, and the top of the connecting blocks is fixedly connected to the top inner wall of the U-shaped mounting base (1).

7. The light weight, multi-crop soybean field cultivator of claim 3, wherein, The top inner wall of the U-shaped moving rod (501) is provided with a threaded hole, which is threadedly connected to the corresponding first T-shaped screw (502). The top two sides of the U-shaped moving rod (501) are provided with positioning grooves, and the inner wall of the positioning groove is in sliding contact with the outer side of the corresponding rectangular positioning rod (503). Limiting holes are provided on the inner wall of the two opposite positioning grooves on the side away from each other. Limiting blocks are fixedly connected to the opposite sides of the two opposite rectangular positioning rods (503), and the limiting blocks are slidably connected to the corresponding limiting holes. Knobs are fixedly connected to the top and bottom of the first T-shaped screw (502).

Images