Foldable quadrat marker frame for forest and grass survey

Abstract

The utility model relates to the technical field of quadrat marking frame for forest and grass investigation, disclose a kind of collapsible quadrat marking frame for forest and grass investigation, including non-collapsible quadrat frame, the both ends inner wall of non-collapsible quadrat frame detachably connected with movable folding quadrat frame, the middle part detachably connected with hinge of movable folding quadrat frame, the lower end outer surface of non-collapsible quadrat frame detachably connected with toe fixer, when using the device, it can be through the combination design of movable folding quadrat frame and hinge of setting, the flexible folding function of frame is convenient, adapt to the marking scene of narrow terrain or small quadrat, while the space occupation when convenient carrying, toe fixer can be deeply into ground, frame is stably fixed in investigation area, effectively prevent the frame displacement caused by wind power, terrain slope and other factors, ensure the accuracy of quadrat boundary marking, provide guarantee for the accuracy of subsequent data acquisition.

Description

Technical Field

[0001] This utility model relates to the technical field of quadrat marking frames for forestry and grassland surveys, specifically a foldable quadrat marking frame for forestry and grassland surveys. Background Technology

[0002] In the field of forest and grassland ecosystem research and monitoring, quadrat surveys are considered a cornerstone working method. By delineating quadrat areas of specific size, they can accurately obtain key information on forest and grassland vegetation in multiple dimensions, such as species composition, quantity distribution, and growth status. These data allow surveyors to conduct detailed observations and data collection on forest and grassland resources, which is of great significance for ecological environment status assessment, resource management decision-making, and scientific research and teaching activities. It is a core data source for promoting the scientific and orderly progress of various tasks in the field of forest and grassland ecology.

[0003] However, it still has some drawbacks. For example, the current quadrat marking frames used in forestry and grassland surveys are fixed square frames with four sides. Although these frames are structurally stable, their large size makes them extremely inconvenient to carry during long-distance fieldwork. Taking forestry and grassland surveys in mountainous areas as an example, surveyors need to traverse rugged mountain roads, and the heavy fixed quadrat frames greatly increase physical exertion and reduce work efficiency. Moreover, as the scope of forestry and grassland surveys continues to expand and the research content becomes increasingly in-depth, the functional requirements for quadrat marking tools are becoming more diverse. When conducting surveys in areas with different terrains and vegetation types, quadrat marking tools need to be able to flexibly adapt to various complex environments. For example, in soft ground such as wetlands, traditional quadrat marking tools are difficult to place stably, and in actual operation, they are easily disturbed by external factors, such as wind or animal contact, causing the quadrat boundaries to shift, which seriously affects the reliability of the survey data.

[0004] To address the aforementioned issues, this application proposes a foldable quadrat marking frame for forestry and grassland surveys. Utility Model Content

[0005] The purpose of this invention is to provide a foldable quadrat marker frame for forestry and grassland surveys, in order to solve the problems of large size, inconvenience, and poor adaptability mentioned in the background art.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows: a foldable quadrat marking frame for forestry and grassland surveys, comprising a non-foldable quadrat frame, wherein a movable foldable quadrat frame is detachably connected to the inner walls of both ends of the non-foldable quadrat frame, and a frame protective sleeve is detachably connected to the outer surfaces of both ends of the non-foldable quadrat frame and the movable foldable quadrat frame.

[0007] Preferably, the movable foldable quadrature frame and the non-foldable quadrature frame are threadedly connected to the upper outer surface with large screws, and the outer surface of the movable foldable quadrature frame is detachably connected with a folding protective sleeve.

[0008] Preferably, the lower outer surface of the non-foldable quadrature frame is detachably connected to a toe retainer.

[0009] Preferably, the middle part of the movable foldable quadrature frame is detachably connected with a hinge.

[0010] Preferably, a small screw is threaded onto the upper outer surface of the hinge, and a movable shaft is movably connected to the middle inner wall of the hinge.

[0011] Preferably, a connector is movably connected to one outer surface of the folding protective sleeve, a screw hole is provided on the inner wall of the connector, and a nut is movably installed on the outer surface of one end of the connector.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] This utility model, through the combination design of a movable foldable quadrat frame and a hinge, facilitates the formation of a complete large quadrat after unfolding, meeting the needs of large-area surveys. At the same time, the flexible folding function of the frame can adapt to narrow terrain or small quadrat marking scenarios. Furthermore, the frame can be reduced in size according to transportation and storage needs, significantly reducing the space occupied when carrying it.

[0014] This utility model features a movable, foldable quadrature frame connected to a non-foldable frame via large screws. The toe-mounted anchors penetrate deep into the ground, securing the frame stably within the survey area. This effectively prevents frame displacement caused by wind, terrain slope, and other factors, ensuring the accuracy of quadrature boundary markings and guaranteeing the accuracy of subsequent data collection. The frame protective sleeve and folding protective sleeve provide comprehensive protection for the quadrature frame, reducing wear and tear on the frame surface from collisions with gravel and friction from vegetation. They also resist corrosion from rain and moisture, extending the overall lifespan of the frame. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of a foldable quadrat marking frame for forestry and grassland surveys according to this utility model.

[0016] Figure 2 This is a schematic diagram of the folded structure of a foldable quadrat marking frame for forestry and grassland surveys according to this utility model.

[0017] Figure 3 This is a schematic diagram showing the detailed structure of the foldable part of a foldable quadrat marking frame for forestry and grassland surveys according to this utility model.

[0018] Figure 4 This is a schematic diagram showing the detailed structure of the folding protective sleeve of a foldable quadrat marking frame for forestry and grassland surveys according to this utility model.

[0019] Figure 5 This is a schematic diagram showing the detailed structure of the connection between the frames and the toe fixation device of a foldable quadrat marking frame for forestry and grassland surveys according to this utility model.

[0020] In the diagram: 1. Non-foldable quadrature frame; 2. Frame protective sleeve; 3. Large screw; 4. Flexible foldable quadrature frame; 5. Foldable protective sleeve; 6. Toe retainer; 7. Hinge; 8. Small screw; 9. Movable shaft; 10. Connector; 11. Screw hole; 12. Nut. Detailed Implementation

[0021] 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.

[0022] Please see Figures 1-2 The inner walls of both ends of the non-foldable quadrat frame 1 are detachably connected to a movable foldable quadrat frame 4. The movable foldable quadrat frame 4 is threadedly connected to the upper outer surface of the non-foldable quadrat frame 1 with a large screw 3. The lower outer surface of the non-foldable quadrat frame 1 is detachably connected to a toe holder 6, which stably fixes the frame in the survey area, effectively preventing the frame from shifting due to factors such as wind force and terrain slope, ensuring the accuracy of the quadrat boundary marking, and providing a guarantee for the accuracy of subsequent data collection.

[0023] In this embodiment, as shown... Figures 3-5 As shown, the movable foldable quadrat frame 4 has a detachable hinge 7 in the middle, which facilitates the formation of a complete large quadrat after unfolding, meeting the needs of large-area surveys. A small screw 8 is threaded onto the upper outer surface of the hinge 7, and a movable shaft 9 is movably connected to the inner wall of the middle section of the hinge 7. Through the flexible folding function of the frame, it adapts to narrow terrain or marking scenarios for small quadrats, while also allowing the frame to be reduced in size according to transportation and storage needs, significantly reducing the space occupied during transport. The non-foldable quadrat frame 1 and the movable foldable quadrat frame 4 are connected at both ends... The outer surface is detachably connected to a frame protective sleeve 2. The outer surface of the movable foldable sample plot frame 4 is detachably connected to a foldable protective sleeve 5. A connector 10 is movably connected to one side of the outer surface of the foldable protective sleeve 5. A screw hole 11 is opened on the inner wall of the connector 10. A nut 12 is movably installed on the outer surface of one end of the connector 10. The frame protective sleeve 2 and the foldable protective sleeve 5 respectively form a wrap-around protection for the sample plot frame, which can reduce the wear of the frame surface caused by collision with gravel and friction with vegetation in the field, and at the same time resist the corrosion of components by rainwater and moisture, extending the service life of the entire frame.

[0024] Working principle

[0025] A foldable quadrat marking frame for forestry and grassland surveys, in its stored and transportable state, allows the movable foldable quadrat frame 4 to fold via a central hinge 7. The hinge 7, utilizing the rotational characteristics of a movable shaft 9, folds the movable foldable quadrat frame 4 inwards or outwards, preventing accidental unfolding. At this point, the folded frame's volume is significantly reduced. Combined with a frame protective sleeve 2 and a folding protective sleeve 5, which wrap both the non-foldable quadrat frame 1 and the movable foldable quadrat frame 4, this reduces wear and tear during transport and facilitates carrying by surveyors. The movable foldable quadrat frame 4 is unfolded via the movable shaft 9 until it is flush with the non-foldable quadrat frame 1, forming a complete quadrat boundary. Subsequently, a large screw 3 is used to secure the movable foldable quadrat frame 4 to the non-foldable quadrat frame 1. The upper outer surface is fixed to ensure a firm connection between the two and prevent relative displacement during use. After the frame is built, the foot fixing device 6 at the lower end of the non-foldable sample plot frame 1 is inserted into the ground. Its sharp structure penetrates deep into the soil, enhancing the overall stability of the frame and resisting the influence of external forces such as wind and terrain slope, ensuring the accurate positioning of the sample plot boundary. During the sample plot marking process, the connector 10 on one side of the foldable protective sleeve 5 can cooperate with the screw hole 11 and the nut 12. The frame protective sleeve 2 and the foldable protective sleeve 5 continue to play a protective role, reducing the friction of the frame against gravel and vegetation in the field, while isolating rainwater and moisture and protecting metal parts from corrosion. Through the flexible operation of the threaded connection and hinge structure, the sample plot frame can be quickly assembled, adjusted and stored, taking into account both practicality and convenience.

[0026] Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

Claims

1. A foldable quadrat marking frame for forestry and grassland surveys, comprising a non-foldable quadrat frame (1), characterized in that: The inner walls of both ends of the non-foldable quadrature frame (1) are detachably connected to a movable foldable quadrature frame (4), and the outer surfaces of both ends of the non-foldable quadrature frame (1) and the movable foldable quadrature frame (4) are detachably connected to a frame protective sleeve (2).

2. The foldable quadrat marking frame for forestry and grassland surveys according to claim 1, characterized in that: The movable foldable quadrature frame (4) is threadedly connected to the upper outer surface of the non-foldable quadrature frame (1) by a large screw (3), and the outer surface of the movable foldable quadrature frame (4) is detachably connected to a foldable protective sleeve (5).

3. The foldable quadrat marking frame for forestry and grassland surveys according to claim 2, characterized in that: The lower outer surface of the non-foldable quadrature frame (1) is detachably connected to a toe retainer (6).

4. The foldable quadrat marking frame for forestry and grassland surveys according to claim 3, characterized in that: The movable foldable quadrature frame (4) is detachably connected to a hinge (7) in the middle.

5. A foldable quadrat marking frame for forestry and grassland surveys according to claim 4, characterized in that: The upper outer surface of the hinge (7) is threaded with a small screw (8), and the middle inner wall of the hinge (7) is movably connected with a movable shaft (9).

6. A foldable quadrat marking frame for forestry and grassland surveys according to claim 5, characterized in that: A connector (10) is movably connected to one side of the outer surface of the folding protective sleeve (5). A screw hole (11) is provided on the inner wall of the connector (10). A nut (12) is movably installed on the outer surface of one end of the connector (10).

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