Auxiliary device for collecting mulching film residue sample

Abstract

The utility model discloses an auxiliary device for collecting a mulching film residue sample, which relates to the technical field of soil sampling equipment and comprises a limiting frame, a horizontal rod and a range finder, the limiting frame at least comprises four sets of limiting rods, cross-shaped openings are formed in the two ends of the limiting rods, a first cover plate and a second cover plate are arranged at the cross-shaped openings, a first limiting block is arranged on the first cover plate, a second limiting block is arranged on the second cover plate, and the first limiting block is detachably connected with the second limiting block. The first limiting block and the second limiting block are matched with the cross-shaped opening after being combined. According to the auxiliary device provided by the utility model, through the scientific structural design, especially by virtue of the anti-rotation constraint effect of the cross-shaped opening and the limiting block, the adaptability and durability of the device are enhanced while the connection stability, the operation convenience and the sampling normalization are improved; efficient and reliable technical support is provided for the collection work of mulching film residue samples, and the method has important practical significance for promoting the research on mulching film pollution prevention and control.

Description

Technical Field

[0001] This utility model relates to the field of soil sampling equipment technology, and in particular to an auxiliary device for collecting residual plastic film samples. Background Technology

[0002] With the rapid advancement of agricultural modernization, plastic film mulching technology has been widely used in my country's agricultural production due to its advantages such as effective moisture retention, temperature increase, and weed suppression. However, if the plastic film is not thoroughly recycled after its service life, a large amount of residual film will remain in the soil. This residual film, if left in the soil for a long time, will damage soil structure, hinder crop root development, and affect soil aeration and permeability, posing a serious threat to sustainable agricultural development.

[0003] To accurately understand the distribution, pollution level, and trends of residual plastic film in soil, and to provide a scientific basis for the prevention and control of plastic film pollution, it is crucial to conduct sampling and testing of plastic film residue. Currently, when collecting plastic film residue samples, it is usually necessary to first determine the sampling area and then manually delineate the sampling range for sample collection. Traditional sampling range delineation often relies on simple tools such as measuring tapes and poles, using manual measurement and marking to determine the boundaries of the sampling unit.

[0004] However, this method has many drawbacks: Firstly, the accuracy of manually delineated sampling areas is low, and measurement errors can easily lead to deviations between the sampling area and the preset area, thus affecting the representativeness of the samples and the accuracy of subsequent test results. Secondly, when delineating a large sampling area, multiple people are required to cooperate in measurement and fixation, making the process cumbersome, time-consuming, and labor-intensive, greatly reducing sampling efficiency. Especially in complex field environments, uneven ground and overgrown weeds further increase the difficulty of manually delineating sampling areas, making it difficult to ensure the standardization and consistency of sampling units.

[0005] An auxiliary device is disclosed in the prior art, including at least one limiting frame and a rangefinder. The limiting frame is used to limit the length and width dimensions of the selected plot, and the rangefinder is used to measure the depth of the excavated soil layer during the process of excavation and soil sampling. The various nodes of the limiting frame are connected by bolts. In actual use, this can easily cause the limiting rods to shift, changing the angle between the limiting rods and affecting the subsequent use effect. Utility Model Content

[0006] The purpose of this invention is to address the deficiencies in the existing technology by proposing an auxiliary device for collecting residual plastic film samples.

[0007] To achieve the above objectives, the present invention adopts the following technical solution:

[0008] An auxiliary device for collecting residual plastic film samples includes a limiting frame, a horizontal bar, and a rangefinder. The limiting frame includes at least four sets of limiting bars, each limiting bar having a cross-shaped opening at both ends. A first cover plate and a second cover plate are provided at the cross-shaped opening. A first limiting block is provided on the first cover plate, and a second limiting block is provided on the second cover plate. The first limiting block and the second limiting block are detachably connected, and the combination of the first limiting block and the second limiting block is adapted to fit the cross-shaped opening.

[0009] Furthermore, the first limiting block and the second limiting block are magnetically connected, the second limiting block consists of two sets, the two sets of second limiting blocks form a gap, and the first limiting block is located between the two sets of second limiting blocks.

[0010] Furthermore, the first limiting block is cross-shaped or straight.

[0011] Furthermore, positioning grooves are provided at both ends of the limiting device, and the cross opening is provided in the positioning groove. The positioning groove is square or circular and is adapted to the first cover plate and the second cover plate.

[0012] Furthermore, the limiting rod has a strip-shaped hole, a slider is slidably connected to the strip-shaped hole, the slider has a threaded hole, a threaded knob is threadedly connected to the threaded hole, a connecting plate is rotatably connected to the threaded knob, the connecting plate is disposed between the threaded knob and the slider, and the connecting plate is adapted to the sliding track on the horizontal rod.

[0013] Furthermore, a rangefinder is slidably connected on the sliding track.

[0014] Beneficial effects

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0016] The cross-shaped opening provides a precise positioning reference for the connection of the limiting rods, enabling adjacent limiting rods to form a stable perpendicular or collinear relationship during splicing. The combination of the first and second limiting blocks perfectly matches the cross-shaped opening, providing rigid constraints on the limiting rods at the intersection, directly preventing relative rotation under load. Compared to existing bolted connections that are susceptible to vibration and impact, this structure significantly enhances the connection strength between the limiting rods and fundamentally prevents angle changes or positional shifts due to external forces. This ensures the limiting frame maintains its pre-set regular shape, providing stable and reliable boundary constraints for the sampling area and fundamentally guaranteeing the accuracy of the sampling range.

[0017] The detachable connection between the first and second limiting blocks eliminates the need for complex tools during the assembly and disassembly of the limiting frame. Operators can quickly complete the splicing and fixing of each limiting rod, significantly shortening the preparation time before sampling. At the same time, this modular structural design facilitates the carrying and storage of the device.

[0018] This auxiliary device, through its scientific structural design, especially by utilizing the anti-rotation constraint effect of the cross opening and the limiting block, enhances the stability of the connection, ease of operation, and standardization of sampling, while also improving the adaptability and durability of the device. It provides efficient and reliable technical support for the collection of residual plastic film samples and has important practical significance for promoting research on plastic film pollution prevention and control. Attached Figure Description

[0019] 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.

[0020] Figure 1 A schematic diagram of the overall structure of the auxiliary device.

[0021] Figure 2 This is a schematic diagram of the front and back of the limit rod.

[0022] Figure 3 This is a structural diagram of part A.

[0023] Figure 4 This is a structural diagram of part B.

[0024] Figure 5 This is a schematic diagram of the planar structure of the auxiliary device.

[0025] In the diagram: 1. Limiting rod; 2. Horizontal rod; 3. Rangefinder; 4. First cover plate; 5. Cross opening; 6. Positioning groove; 7. Second cover plate; 8. Threaded knob; 9. Connecting plate; 10. Slider. Detailed Implementation

[0026] 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.

[0027] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0028] Reference Figures 1-5 An auxiliary device for collecting residual plastic film samples includes a limiting frame, a horizontal bar 2, and a rangefinder 3. The limiting frame includes at least four sets of limiting bars 1. The two ends of the limiting bars 1 are provided with cross openings 5. A first cover plate 4 and a second cover plate 7 are provided at the cross openings 5. A first limiting block is provided on the first cover plate 4, and a second limiting block is provided on the second cover plate 7. The first limiting block and the second limiting block are detachably connected. The combination of the first limiting block and the second limiting block is adapted to the cross openings 5.

[0029] In terms of connection stability, the connection structure of the limiting rod 1, which uses a cross opening 5 at both ends in conjunction with the first cover plate 4, the second cover plate 7, and the limiting block, has significant advantages. The fitting design of the cross opening 5 and the limiting block is the core structure for restricting the relative rotation of the limiting rod 1: the cross opening 5 provides a precise positioning reference for the connection of the limiting rod 1, enabling adjacent limiting rods 1 to form a stable perpendicular or collinear relationship when spliced; while the combination of the first and second limiting blocks perfectly fits the cross opening 5, forming a rigid constraint on the limiting rod 1 at the intersection, directly preventing relative rotation of the limiting rod 1 under force. Compared to the bolt connection method in existing technologies, which is easily affected by vibration and contact and may shift, this structure not only significantly enhances the connection strength between the limiting rods 1, but also fundamentally prevents the limiting rod 1 from changing its angle or shifting its position due to external forces, ensuring that the limiting frame always maintains the preset regular shape, providing a stable and reliable boundary constraint for the sampling area, and fundamentally guaranteeing the accuracy of the sampling range.

[0030] The detachable connection between the first and second limiting blocks allows the assembly and disassembly of the limiting frame to be done without relying on complex tools. Operators can quickly complete the splicing and fixing of each limiting rod 1, which greatly shortens the preparation time before sampling. At the same time, this modular structural design makes the device easy to carry and store.

[0031] This auxiliary device, through its scientific structural design, especially with the anti-rotation constraint effect of the cross opening 5 and the limiting block, enhances the stability of the connection, ease of operation, and standardization of sampling, while also improving the adaptability and durability of the device. It provides efficient and reliable technical support for the collection of residual plastic film samples and has important practical significance for promoting research on plastic film pollution prevention and control.

[0032] In other preferred embodiments, the first limiting block and the second limiting block are magnetically connected, the second limiting block is in two sets, the two sets of second limiting blocks form a gap, and the first limiting block is located between the two sets of second limiting blocks.

[0033] Magnetic connections eliminate the need for tools like wrenches. During assembly, operators simply align the first limiting block with the gap between the two sets of second limiting blocks and gently bring them closer together. The magnetic force automatically aligns and attracts the blocks, eliminating the tedious alignment and tightening steps required with bolted connections and significantly reducing assembly time. Disassembly is equally efficient; a slight effort is needed to overcome the magnetic force to separate the first and second limiting blocks, making the process smooth and efficient.

[0034] Specifically, the first limiting block is cross-shaped or straight.

[0035] In other preferred embodiments, positioning grooves 6 are provided at both ends of the limiting rod, and cross openings 5 ​​are provided in the positioning grooves 6. The positioning grooves 6 are square or circular and are adapted to the first cover plate 4 and the second cover plate 7. The square or circular positioning grooves 6 form a tight fit with the first cover plate 4 and the second cover plate 7 through their regular contours, which can quickly determine the installation position of the cover plate at the end of the limiting rod 1 and avoid the cover plate from shifting or tilting during assembly.

[0036] In other preferred embodiments, the limiting rod 1 has a strip-shaped hole, a slider 10 is slidably connected to the strip-shaped hole, the slider 10 has a threaded hole, a threaded knob 8 is threadedly connected to the threaded hole, a connecting plate 9 is rotatably connected to the threaded knob 8, the connecting plate 9 is disposed between the threaded knob 8 and the slider 10, and the connecting plate 9 is adapted to the sliding track on the horizontal rod 2.

[0037] Rotating the threaded knob 8 adjusts the friction between the connecting plate 9 and the slider 10, thus flexibly adapting to the rotation state of the horizontal rod 2. When it is necessary to adjust the rotation angle of the horizontal rod 2 (such as changing the measurement direction of the rangefinder 3 to adapt to soil profiles with different slopes), the operator can loosen the threaded knob 8 to reduce its pressure on the connecting plate 9, thereby reducing the friction between the connecting plate 9 and the slider 10, allowing the horizontal rod 2 to easily rotate around the connection point and achieve flexible angle adjustment. After the horizontal rod 2 rotates to the target angle, tightening the threaded knob 8 increases the pressure, which in turn increases the friction between the connecting plate 9 and the slider 10, forming a stable damping effect. This prevents the horizontal rod 2 from rotating unexpectedly due to external interference during sampling, ensuring that the rangefinder 3 is always aligned with the measurement target.

[0038] Specifically, a rangefinder 3 is slidably connected on the sliding track.

[0039] 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. An auxiliary device for mulch residue sample collection, characterized in that, The device includes a limiting frame, a horizontal bar, and a rangefinder. The limiting frame includes at least four sets of limiting bars, each limiting bar having a cross-shaped opening at both ends. A first cover plate and a second cover plate are provided at the cross-shaped opening. A first limiting block is provided on the first cover plate, and a second limiting block is provided on the second cover plate. The first limiting block and the second limiting block are detachably connected, and the combination of the first limiting block and the second limiting block is adapted to the cross-shaped opening.

2. The auxiliary device for collecting a mulch residue sample according to claim 1, wherein The first limiting block and the second limiting block are magnetically connected. There are two sets of the second limiting blocks, and the two sets of second limiting blocks form a gap. The first limiting block is located between the two sets of second limiting blocks.

3. The auxiliary device for collecting residual plastic film samples according to claim 2, characterized in that, The first limiting block is cross-shaped or straight.

4. The auxiliary device for collecting residual plastic film samples according to claim 1, characterized in that, The limiting rod has positioning grooves at both ends, and the cross opening is set in the positioning groove. The positioning groove is square or circular and is adapted to the first cover plate and the second cover plate.

5. The auxiliary device for collecting residual plastic film samples according to claim 1, characterized in that, The limiting rod has a strip-shaped hole, and a slider is slidably connected to the strip-shaped hole. The slider has a threaded hole, and a threaded knob is threadedly connected to the threaded hole. A connecting plate is rotatably connected to the threaded knob. The connecting plate is disposed between the threaded knob and the slider, and the connecting plate is adapted to the sliding track on the horizontal rod.

6. The auxiliary device for collecting residual plastic film samples according to claim 5, characterized in that, A rangefinder is slidably connected to the sliding track.

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