Retractable and adjustable portable field sampling frame

Abstract

The utility model relates to the technical field of field sampling, in particular to a retractable adjustable portable field sampling frame which comprises four groups of retractable frames which are of a square structure, the four groups of retractable frames are of a symmetrical structure with diagonal lines as axes, and the tail ends of every two adjacent groups of retractable frames are connected through a right-angle connector. By means of the design, the problems that an existing sampling frame is usually fixed in size and cannot be adjusted according to actual conditions, use is inconvenient, and in addition, the sampling frame is usually large in size and difficult to carry and store are solved. Due to the fact that the four sets of telescopic frames are adopted, telescopic adjustment can be carried out to meet the sampling requirements of surface connection of different sizes, four-corner connection is carried out through the right-angle connectors and the movable connectors, the sampling frame can be easily folded and unfolded, and therefore the portability of the sampling frame is greatly improved. When not in use, the folding chair can be folded, so that the occupied space is reduced, and the carrying and the storage are convenient.

Description

Technical Field

[0001] This utility model relates to the field of field sampling technology, and more specifically, to a retractable and adjustable portable field sampling frame. Background Technology

[0002] Field sampling refers to the process of collecting samples in farmland or experimental fields, primarily for agricultural scientific research, soil analysis, and pest and disease monitoring. This process aims to obtain information on the farmland environment, crop growth status, and pest and disease occurrence to facilitate subsequent analysis and research. Field sampling methods vary depending on the research objectives and specific circumstances, but generally should adhere to the principles of randomness, representativeness, and reproducibility. Field sampling is of great significance in agricultural scientific research, helping researchers understand the actual conditions of farmland ecosystems and providing a scientific basis for agricultural management and policy formulation.

[0003] In scientific experiments conducted in the field, sampling is a crucial method for obtaining relevant indicators of the research subjects, requiring random sampling to investigate these indicators. The sampling area varies depending on the research subjects and objectives; sometimes, to ensure more representative samples, the sampling area is increased. Existing sampling frames are typically of fixed size and cannot be adjusted to suit specific circumstances, leading to inconvenience. Furthermore, sampling frames are usually bulky, making them difficult to carry and store. Therefore, it is necessary to design an adjustable, retractable, and portable sampling frame to meet diverse sampling needs. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a retractable and adjustable portable field sampling frame, which solves the problems mentioned in the background art. The sampling area of ​​this sampling frame can be adjusted according to actual needs, making it convenient to use. At the same time, the whole frame can be retracted and folded, making it lightweight and easy to carry, and convenient for field operation.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0006] A retractable and adjustable portable field sampling frame includes a telescopic frame. The telescopic frame is arranged in four sets in a square structure, and the four sets of telescopic frames are symmetrical about the diagonal axis. The tail ends of two adjacent sets of telescopic frames are connected by a right-angle connector, and the head ends are connected by a movable connector.

[0007] Furthermore, the telescopic frame is composed of a storage square tube, a telescopic square tube, and a hinge joint. The left end of the storage square tube is fixed with an arc-shaped hinge joint, which is rotatably connected to a right-angle connector via a fastening bolt. A multi-level telescopic square tube is inserted into the right side of the inside of the storage square tube.

[0008] Furthermore, length scale lines are engraved on both the upper and lower surfaces of the telescopic square tube.

[0009] Furthermore, each structural component on the telescopic square tube is fixed with a limiting baffle at its left end. The upper and lower sides of the inner wall of each structural component on the telescopic square tube and the upper and lower sides of the inner wall of the receiving square tube are provided with limiting grooves for accommodating the limiting baffles. The limiting baffles are inserted into the limiting grooves.

[0010] Furthermore, a locking screw is embedded inside the side of the storage square tube near the left end face, and locking screws are also embedded inside the structural components of the telescopic square tube near the left end face.

[0011] Furthermore, one end of the movable connector is connected to a movable connector head via a fastening bolt, and the other end of the movable connector is fixedly connected to a fixed connector head. The angle between the movable connector head and the fixed connector head can be adjusted between 90° and 180°. The movable connector head is fixedly connected to the first end of a set of telescopic frames, and the fixed connector head is fixedly connected to the first end of another set of telescopic frames.

[0012] Furthermore, the storage square tube and the telescopic square tube are made of lightweight aluminum alloy, and the movable connector and the right-angle connector are made of engineering plastic.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] 1. The sampling area of ​​this utility model can be adjusted according to the actual situation. The telescopic frame is equipped with scales, which can accurately and quickly adjust the sampling area. Compared with the original sampling frame with a fixed area, it achieves the practical effect of one frame serving multiple purposes.

[0015] 2. The sampling frame of this utility model has a telescopic frame that can be extended and retracted, and the whole frame can be folded and retracted, saving space. It is made of lightweight material and is easy to carry.

[0016] 3. The sampling frame is fixed at four corners using right-angle connectors and movable connectors, resulting in high overall structural strength, good support, and resistance to deformation, thus ensuring the accuracy of the sampling area. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0018] Figure 2 This is a schematic diagram of the structure of this utility model from another angle.

[0019] Figure 3 This is a partial structural schematic diagram of the present invention.

[0020] Figure 4This is a disassembly diagram of the telescopic frame, movable connector, and right-angle connector in this utility model.

[0021] Figure 5 This is a schematic diagram of the telescopic frame structure in this utility model.

[0022] Figure 6 This is a schematic diagram of the telescopic frame structure from another angle in this utility model.

[0023] Figure 7 This is a schematic diagram of the structure of this utility model after shrinkage.

[0024] In the diagram: 1. Telescopic frame; 11. Storage square tube; 12. Telescopic square tube; 13. Length scale line; 14. Movable connector; 15. Fixed connector; 16. Hinge joint; 17. Limiting plate; 18. Limiting groove; 19. Locking screw; 2. Movable connector; 3. Right angle connector; 31. Fastening bolt. Detailed Implementation

[0025] The technical solutions of this utility model will be clearly and completely described below with reference to the embodiments of this utility model. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of this utility model.

[0026] Example:

[0027] like Figures 1 to 7 As shown, a retractable and adjustable portable field sampling frame includes a telescopic frame 1. The telescopic frame 1 is provided in four sets in a square structure, and the four sets of telescopic frame 1 are symmetrical about the diagonal axis. The tail ends of two adjacent sets of telescopic frame 1 are connected by right-angle connectors 3, and the head ends are connected by movable connectors 2. This design solves the problems of existing sampling frames, which are usually fixed in size and cannot be adjusted according to actual conditions, resulting in inconvenience in use. In addition, the sampling frames are usually large in size, making them difficult to carry and store.

[0028] The telescopic frame 1 consists of a storage square tube 11, a telescopic square tube 12, and a hinge joint 16. The left end of the storage square tube 11 is fixed with an arc-shaped hinge joint 16, which is rotatably connected to a right-angle connector 3 via a fastening bolt 31. A multi-stage telescopic square tube 12 is inserted into the right side of the storage square tube 11. The telescopic frame 1 is adjustable, allowing users to easily adjust the size of the sampling frame as needed without additional tools. The multi-stage telescopic square tube 12 design provides a wider adjustment range and greater flexibility. Through the design of the hinge joint 16 and the right-angle connector 3, the sampling frame can be easily folded for convenient carrying and storage.

[0029] The telescopic square tube 12 has length graduation lines 13 engraved on both its upper and lower surfaces. These graduation lines provide users with an intuitive reference, allowing them to precisely adjust the length of the telescopic square tube 12 as needed, ensuring sampling accuracy. This not only improves the accuracy and convenience of sampling but also makes the entire sampling process more efficient and standardized, enhancing ease of use.

[0030] Each structural component on the telescopic square tube 12 is fixed with a limiting baffle 17 at its left end. Limiting grooves 18 are provided on the upper and lower sides of the inner walls of each structural component on the telescopic square tube 12 and on the upper and lower sides of the inner walls of the receiving square tube 11 to accommodate the limiting baffles 17. The limiting baffles 17 are engaged in the limiting grooves 18. The combination of the limiting baffles 17 and the limiting grooves 18 ensures that the telescopic square tube 12 and the receiving square tube 11 remain stable during telescopic movement, preventing wobbling or displacement, thus ensuring the overall structure of the sampling frame remains stable during use. Furthermore, the design of the limiting baffles 17 effectively prevents the telescopic square tube 12 from over-extending, avoiding structural damage. When the telescopic square tube 12 reaches its maximum or minimum telescopic limit, the limiting baffles 17 will encounter the end of the limiting grooves 18, thus preventing further telescopic movement. Simultaneously, the limiting baffles 17 and the limiting grooves 18 improve the smoothness of the telescopic operation and reduce frictional resistance during telescopic movement.

[0031] A locking screw 19 is embedded inside the side of the storage square tube 11 near the left end, and locking screws 19 are also embedded inside the structural components of the telescopic square tube 12 near the left end. The locking screws 19 lock the position of the telescopic square tube 12 after telescopic adjustment, preventing accidental telescopic extension or sliding during use. Once the sampling frame is adjusted to the appropriate size, its position can be fixed by tightening the locking screws 19.

[0032] One end of the movable connector 2 is connected to a movable connector head 14 via a fastening bolt 31, and the other end is fixedly connected to a fixed connector head 15. The angle between the movable connector head 14 and the fixed connector head 15 is adjustable between 90° and 180°. The movable connector head 14 is fixedly connected to the first end of one set of telescopic frame 1, and the fixed connector head 15 is fixedly connected to the first end of another set of telescopic frame 1. This design allows the adjacent telescopic frame 1 on both sides of the movable connector 2 to be movably connected, adjustable between 90° and 180°, facilitating the folding and retraction of the telescopic frame 1. Through the design of the movable connector 2, the sampling frame can easily adapt to different sampling angles and positions, improving sampling accuracy and efficiency. The movable connector 2 also makes the sampling frame occupy less space when folded, facilitating carrying and storage.

[0033] The storage square tube 11 and the telescopic square tube 12 are made of lightweight aluminum alloy. Aluminum alloy is characterized by its low density and light weight while maintaining high strength, making the storage square tube 11 and the telescopic square tube 12 both lightweight and durable, easy to carry and operate. The movable connector 2 and the right-angle connector 3 are made of engineering plastic. Engineering plastic has a much lower density than metal, which helps to reduce the weight of the entire sampling frame. Engineering plastic typically has good impact resistance, able to withstand collisions and impacts that may be encountered during use, protecting the connection structure from damage. This design not only ensures the structural strength and durability of the sampling frame but also greatly reduces the overall weight and improves portability.

[0034] The working principle of this retractable and adjustable portable field sampling frame is as follows: The telescopic frame 1 consists of a storage square tube 11 and a telescopic square tube 12, forming an adjustable structure. The telescopic square tube 12 can freely extend and retract within the storage square tube 11, thereby changing the overall size of the sampling frame. Users can adjust the size of the sampling frame as needed by pulling or pushing the telescopic square tube 12. After adjusting to the desired size, the user can fix the position by tightening the locking screws 19 on the storage square tube 11 and the telescopic square tube 12 to prevent accidental extension or sliding during use. The design of the limiting baffle 17 and the limiting slide groove 18 ensures stability and smoothness during extension and retraction, while preventing excessive extension and retraction. The sampling frame can be folded inwards via the movable connector 2 and the right-angle connector 3, folding the sampling frame from a square shape into a linear shape for easy carrying and storage. When needed, simply unfold the sampling frame, extending the telescopic frame 1 to the desired length, and secure it with the locking screws 19.

[0035] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating this utility model, and are not intended to limit the implementation of this utility model. For those skilled in the art, other variations or modifications can be made based on the above description. It is impossible to exhaustively list all the implementation methods here. Any obvious variations or modifications derived from the technical solutions of this utility model are still within the protection scope of this utility model.

Claims

1. A retractable and adjustable portable field sampling frame, comprising a telescopic frame (1), characterized in that: The telescopic frame (1) is provided in four sets and has a square structure. The four sets of telescopic frame (1) are symmetrical about the diagonal. The tail ends of two adjacent sets of telescopic frame (1) are connected by right-angle connectors (3), and the head ends are connected by movable connectors (2). The telescopic frame (1) is composed of a storage square tube (11), a telescopic square tube (12) and a hinge joint (16). The left end of the storage square tube (11) is fixed with an arc-shaped hinge joint (16). The hinge joint (16) is rotatably connected to the right-angle connector (3) by a fastening bolt (31). The right side of the storage square tube (11) is inserted with a multi-level telescopic square tube (12). One end of the movable connector (2) is connected to a movable connector head (14) by a fastening bolt (31), and the other end of the movable connector (2) is fixedly connected to a fixed connector head (15). The angle between the movable connector head (14) and the fixed connector head (15) can be adjusted between 90° and 180°. The movable connector head (14) is fixedly connected to the first end of a set of telescopic frame (1), and the fixed connector head (15) is fixedly connected to the first end of another set of telescopic frame (1).

2. The retractable and adjustable portable field sampling frame according to claim 1, characterized in that: The telescopic square tube (12) has length scale lines (13) engraved on both the upper and lower sides.

3. The retractable and adjustable portable field sampling frame according to claim 1, characterized in that: Each structural component on the telescopic square tube (12) is fixed with a limiting baffle (17) at its left end. The upper and lower sides of the inner wall of each structural component on the telescopic square tube (12) and the upper and lower sides of the inner wall of the receiving square tube (11) are provided with limiting grooves (18) for accommodating the limiting baffles (17). The limiting baffles (17) are inserted into the limiting grooves (18).

4. The retractable and adjustable portable field sampling frame according to claim 1, characterized in that: The storage square tube (11) has a locking screw (19) embedded inside the side near the left end face, and each structural component on the telescopic square tube (12) has a locking screw (19) embedded inside the side near the left end face.

5. The retractable and adjustable portable field sampling frame according to claim 2, characterized in that: The storage square tube (11) and telescopic square tube (12) are made of lightweight aluminum alloy, and the movable connector (2) and right-angle connector (3) are made of engineering plastic.

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