一种野外调查样方框
By designing a quadrat frame that combines adjustable components and dividing ropes, the problems of non-adjustable area and irregular shape of traditional quadrat frames were solved, enabling flexible adjustment of the quadrat area and regularization of its shape, thus improving the accuracy of the survey results.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- CHONGQING ACADEMY OF FORESTRY SCI
- Filing Date
- 2025-07-25
- Publication Date
- 2026-07-17
AI Technical Summary
Traditional quadrat frames have non-adjustable areas or irregular shapes, which affects the accuracy of survey results.
A sample square frame was designed, comprising a rectangular frame, support columns, adjustment components, and dividing ropes. By combining the adjustment components and dividing ropes, the area of the sample square can be adjusted and its shape can be regularized. The accuracy of the position can be improved by using scale lines and rollers.
It enables flexible adjustment of the quadrat area and regularity of shape, thereby improving the accuracy of the survey results.
Smart Images
Figure CN224518196U_ABST
Abstract
Claims
1. A field investigation quadrat frame comprising a frame body (1) and four supporting columns (2), characterized in that: The frame (1) includes four end-to-end side strips (11), adjusting members (12) slidably mounted on the side strips (11), and a dividing rope (13), the dividing rope (13) being connected to two opposing adjusting members (12); four supporting columns (2) are respectively located at the connection points of adjacent side strips (11); scale lines (111) are formed on the outer side wall of the side strips (11); the adjusting member (12) includes an adjusting block (121) located inside the side strip (11), two clamping blocks (122) slidably mounted at the upper and lower ends of the adjusting block (121), and a connecting rod to the adjusting member (12). A tension spring (123) between the block (121) and the clamping block (122); the clamping block (122) includes a sliding plate (1221) slidably connected to the adjusting block (121) and a clamping plate (1222) in contact with the upper and / or lower surfaces of the edge strip (11). Both the upper and lower ends of the adjusting block (121) are formed with movable grooves (1211) for the sliding plate (1221) to slide. One end of the tension spring (123) is fixedly connected to the inner bottom wall of the movable groove (1211), and the other end is fixedly connected to the bottom of the sliding plate (1221).
2. A quadrat frame for field surveys according to claim 1, characterised in that: The adjusting member (12) also includes a roller (124) rotatably connected to the clamping block (122); the upper and lower surfaces of the edge strip (11) are both formed with limiting grooves (112) that cooperate with the roller (124).
3. A quadrat frame for field surveys according to claim 2, characterised in that: One end of the clamp (1222) is formed with an indicator arrow (1223) pointing to the scale line (111).
4. A field quadrat frame according to claim 1, wherein: The two ends of the separating rope (13) are formed with connectors (131) that can be detachably connected to the adjusting block (121), and the outer wall of the adjusting block (121) is formed with a connector (1212) that is connected to the connector (131).
5. A field quadrat frame according to claim 1, wherein: The support column (2) includes a connecting seat (21) connected to the side strip (11) and a fixing member located at the bottom of the connecting seat (21); the two ends of the side strip (11) are formed with cross-shaped locking heads (113), and the top of the connecting seat (21) is formed with a cross-shaped locking groove (211) that cooperates with the cross-shaped locking heads (113).
6. A quadrat frame for field surveys according to claim 5, characterised in that: The fastener includes a rotating sleeve (22) rotatably connected to the connecting seat (21) and a fixing post (23) threadedly connected to the rotating sleeve (22); a rotating head (221) is formed at the top of the rotating sleeve (22), and a rotating cavity (212) that cooperates with the rotating head (221) is formed at the bottom of the connecting seat (21); an adjusting screw (231) that is threadedly connected to the rotating sleeve (22) is formed at the top of the fixing post (23).