Grassland quadrat aboveground biomass automatic acquisition device

Abstract

The invention provides a grassland quadrat aboveground biomass automatic collection device. The grassland quadrat overground biomass automatic collection device comprises a bottom plate, a lifting mechanism is fixedly mounted at the top of the bottom plate, and a sampling frame is fixedly mounted on the lifting mechanism; an extrusion mechanism is arranged in the sampling frame, a power mechanism located on one side of the sampling frame is arranged at the top of the bottom plate, and the power mechanism is matched with the extrusion mechanism; the sampling frame is matched with a grassland quadrat, and the bottom of the sampling frame is inserted into soil of the grassland quadrat during use; the power mechanism is used for cutting organisms in the grassland quadrat in the sampling frame. The device for automatically collecting the above-ground biomass of the grassland quadrat has the advantages that plants on the grassland quadrat can be cut close to the ground, and the cut plants can be extruded and collected.

Description

Technical Field

[0001] This invention relates to the field of biomass collection technology, and in particular to an automatic aboveground biomass collection device for grassland quadrats. Background Technology

[0002] Based on differences in natural conditions and ecological regions, my country's grassland ecosystems can be broadly classified into three types: meadow steppe, typical steppe, and desert steppe. Among these, desert steppe is the most difficult to manage. In my country, desert steppe is mainly distributed in areas west of the Beijing-Tianjin-Hebei Railway in Inner Mongolia, such as Xisu Banner. Desert steppe communities consist of xerophytic tufted grasses, often mixed with a large number of xerophytic small and semi-shrubs.

[0003] Collecting grassland vegetation samples is an important part of grassland ecological environment monitoring and restoration. Traditionally, grassland vegetation samples are collected manually by using tools such as shovels to separate plant roots and stems in a designated area, and then classifying and bagging the plants. This method is labor-intensive and inefficient.

[0004] As disclosed in the prior art: a collection device for determining biomass in grassland quadrats, the collection device includes a handheld part, a cutting component fixedly connected to the handheld part, and a collection component detachably connected to the cutting component. The cutting component includes a mounting housing and a driven housing. The mounting housing is provided with a driving mechanism and a rotation limiting mechanism. The collection component is detachably connected to the driven housing.

[0005] Although it can automatically cut plants, it still requires manual selection of the cutting position, which can easily lead to uncertainty in the collection height during the plant collection process and result in large errors in the collected data.

[0006] For example, existing technology discloses an inhalation-type grassland biomass sample collection device, comprising: a mowing device, a handrail, and an inhalation mechanism, wherein the inhalation mechanism is also connected to a sample storage device; the mowing device includes a rotary motor disposed inside the housing, a rotary shaft sleeved on the rotary motor, and a blade disc mounted on the rotary shaft via a bushing, wherein multiple mowing blades are evenly arranged on the blade disc, and each blade has a fixing hole; the handrail is provided with a control switch and a battery box, the battery box being used to power the mowing device, and the control switch being used to control the start and stop of the rotary motor; the inhalation mechanism includes a fixed tube and a high-elasticity hose, the fixed tube being fixedly installed on the mowing device, a fan being disposed inside the fixed tube, one end of the high-elasticity hose being connected to the fixed tube via a connecting sleeve, and the other end being connected to the sample storage device, the sample storage device being used to store the harvested samples.

[0007] Although it can cut vegetation at a fixed height during the collection process, it still cannot cut close to the ground, which can easily lead to large errors in the collected data. In addition, the collection process uses suction to collect the cut plants, which can easily lead to the inability to suck in all the cut plants, resulting in large errors in the collected data.

[0008] Therefore, it is necessary to provide a new automatic biomass collection device for grassland quadrats to solve the above-mentioned technical problems. By automatically selecting the cutting position and using a squeezing method for ground cutting, the data error of aboveground biomass in grassland quadrats during the collection process can be reduced, thereby improving the accuracy of data collection. Summary of the Invention

[0009] The technical problem solved by this invention is to provide an automatic biomass collection device for grassland quadrats, capable of cutting plants close to the ground and collecting the cut plants by compression. This device features automatic selection of the cutting location, employs compression-type ground cutting, and can quickly and accurately collect aboveground biomass from grassland quadrats.

[0010] To solve the above-mentioned technical problems, the present invention provides an automatic aboveground biomass collection device for grassland quadrats, comprising: a base plate, a lifting mechanism fixedly installed on the top of the base plate, a sampling frame fixedly installed on the lifting mechanism; a squeezing mechanism is provided inside the sampling frame, and a power mechanism located on one side of the sampling frame is provided on the top of the base plate, the power mechanism being adapted to the squeezing mechanism; The sampling frame is adapted to the grassland quadrat, and the bottom of the sampling frame is inserted into the soil of the grassland quadrat during use; The power mechanism is used to trim organisms within the grassland quadrats located in the sampling frame; The squeezing mechanism is used to squeeze and collect organisms in the sampling frame while the power mechanism cuts the organisms in the grassland quadrats within the sampling frame.

[0011] Preferably, the base plate includes a plate body, the top of the plate body has a sliding hole, the outer wall of the sampling frame is slidably connected to the inner wall of the sliding hole, the top of the plate body has at least one guide hole, and the bottom of the plate body is fixedly installed with a guide block.

[0012] Preferably, the lifting mechanism includes multiple connecting blocks fixedly installed outside the sampling frame. A first hydraulic cylinder is fixedly installed on the top of the connecting block. The output shaft of the first hydraulic cylinder is fixedly connected to the connecting block. A support plate is fixedly installed on the top of the first hydraulic cylinder. Multiple support rods are fixedly installed on the bottom of the support plate. The bottom end of the support rods is fixedly connected to the top of the base plate.

[0013] Preferably, the sampling tube includes a frame, with cutting holes on both sides of the frame, a plurality of limiting blocks fixedly installed on the outer wall of the frame, the limiting blocks being adapted to the base plate, mounting holes on the other two sides of the frame, limiting strips fixedly installed on the top inner wall of the mounting holes, an annular cutter fixedly installed on the bottom of the frame, and at least one push block hole on one side of the frame.

[0014] Preferably, the extrusion mechanism includes two symmetrically arranged side plates, with multiple collecting extrusion mesh plates between the two side plates. A first connecting rod is provided at the bottom of each side plate, penetrating through the side plate. Multiple linearly distributed support blocks are fixedly installed at the bottom of each collecting extrusion mesh plate. A second connecting rod is provided below the collecting extrusion mesh plate, penetrating through the multiple support blocks. Rotating blocks are threaded onto both ends of the first connecting rod and both ends of the second support rod. A fixing block is rotatably sleeved on the outer side of each rotating block. Mounting frames are provided on both sides of each fixing block. A first spring is provided between each of the two adjacent mounting frames, with both ends of the first spring fixedly installed on the inner wall of the mounting frame.

[0015] Preferably, the second support rod passes through the mounting hole, and the bottom of the collecting extrusion mesh plate contacts the top of the limiting strip.

[0016] Preferably, the fixing block, the mounting frame, the first spring, and the rotating block are all located outside the sampling frame.

[0017] Preferably, the power mechanism includes two second hydraulic cylinders symmetrically arranged on the top of the base plate. A common connecting plate is fixedly installed on the output shaft of the two second hydraulic cylinders. An mounting block is fixedly installed on the bottom of the connecting plate. A common cutter is fixedly installed on the bottom of the two mounting blocks. The cutter is slidably installed on the bottom of the base plate. A guide plate is fixedly installed on the top of the base plate. Two push rods are slidably installed on the guide plate. The push rods pass through the push block holes and are adapted to each other. A connecting plate is slidably connected to the connecting plate. A push block is fixedly installed at the end of the push rod near the sampling frame. A common push plate is fixedly installed on the push block and the ends of the two push rods away from the sampling frame. A second spring is sleeved on the outside of the push rod. The two ends of the second spring are fixedly connected to the connecting plate and the push plate, respectively.

[0018] Preferably, the top of the cutter is provided with a guide groove, and the guide block is slidably installed in the guide groove.

[0019] Preferably, a connecting seat is fixedly installed on the top of the base plate, the second hydraulic cylinder is fixedly installed on one side of the connecting seat, a plurality of fixing rings are fixedly installed on the top of the base plate, and the cylinder body of the second hydraulic cylinder is fixedly installed inside the fixing rings.

[0020] Compared with related technologies, the automatic aboveground biomass collection device for grassland quadrats provided by this invention has the following beneficial effects: This invention provides an automatic biomass collection device for grassland quadrats. Guide blocks and guide grooves facilitate the normal operation of the cutter on the base plate, enabling close-to-the-ground cutting of plants in the grassland quadrats and ensuring sampling accuracy. A pressing mechanism, composed of side plates, a collecting and pressing mesh plate, a first connecting rod, a support block, a second connecting rod, a fixing block, a mounting frame, a first spring, and a rotating block, automatically presses and collects the cut plants from the grassland quadrats. This effectively prevents missed plants and avoids the cutter from crushing plants during cutting, thus improving the accuracy of the collected data. The system utilizes a power mechanism consisting of a second hydraulic cylinder, connecting plate, mounting block, cutter, guide plate, push block, push rod, push plate, second spring, guide groove, connecting seat, and fixing ring. This mechanism can cut the plants on the grassland quadrat while simultaneously moving one of the side plates, allowing the extrusion mechanism to operate normally. This ensures effective plant collection while cutting, preventing any plants from being lost. A lifting mechanism consisting of a support rod, support plate, first hydraulic cylinder, and connecting block can raise and lower the sampling frame, facilitating alignment of the cutter with the cutter hole and ensuring the cutter collects the plants close to the ground, thus improving the accuracy of the collected data. Attached Figure Description

[0021] Figure 1 A schematic diagram of a preferred embodiment of the automatic aboveground biomass collection device for grassland quadrats provided by the present invention; Figure 2 for Figure 1 The diagram shows the structure from the second perspective. Figure 3 for Figure 1 The diagram shows a structural representation from the third perspective. Figure 4 for Figure 1 The diagram shows the connection structure between the sampling frame and the extrusion mechanism. Figure 5 for Figure 4 An enlarged structural diagram of part A shown; Figure 6 for Figure 4 A structural schematic diagram from another perspective is shown; Figure 7 for Figure 6 The diagram shows the structure of the extrusion mechanism; Figure 8 for Figure 7 The diagram shows a partial structural representation. Figure 9 for Figure 8 An enlarged structural diagram of part B is shown; Figure 10 for Figure 1 The diagram shows the structure of the power mechanism. Figure 11 for Figure 1 The diagram shows the structure of the base plate. Figure 12 for Figure 1 The diagram shows the structure of the lifting mechanism 2.

[0022] Numbered in the diagram: 1. Base plate; 101. Plate body; 102. Sliding hole; 103. Guide hole; 104. Guide block; 2. Lifting mechanism; 201. Support rod; 202. Support plate; 203. First hydraulic cylinder; 204. Connecting block; 3. Sampling frame; 31. Frame body; 32. Cutter hole; 33. Limiting block; 34. Mounting hole; 35. Annular cutter; 36. Limiting strip; 37. Push block hole; 4. Extrusion mechanism; 41. Side plate; 42. Collection extrusion mesh 43. Plate, 44. First connecting rod, 45. Support block, 46. Second connecting rod, 47. Fixing block, 48. Mounting frame, 49. First spring, 500. Rotating block, 501. Power mechanism, 502. Second hydraulic cylinder, 503. Connecting plate, 504. Mounting block, 505. Cutter, 506. Guide plate, 507. Push block, 508. Push rod, 509. Second spring, 510. Guide groove, 511. Connecting seat, 512. Fixing ring. Detailed Implementation

[0023] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0024] Please refer to the following: Figures 1-12 ,in, Figure 1 A schematic diagram of a preferred embodiment of the automatic aboveground biomass collection device for grassland quadrats provided by the present invention; Figure 2 for Figure 1 The diagram shows the structure from the second perspective. Figure 3 for Figure 1 The diagram shows a structural representation from the third perspective. Figure 4 for Figure 1 The diagram shows the connection structure between the sampling frame and the extrusion mechanism. Figure 5 for Figure 4 An enlarged structural diagram of part A shown; Figure 6 for Figure 4 A structural schematic diagram from another perspective is shown; Figure 7 for Figure 6 The diagram shows the structure of the extrusion mechanism; Figure 8 for Figure 7 The diagram shows a partial structural representation. Figure 9 for Figure 8 An enlarged structural diagram of part B is shown; Figure 10 for Figure 1 The diagram shows the structure of the power mechanism. Figure 11 for Figure 1 The diagram shows the structure of the base plate. Figure 12 for Figure 1 The diagram shows the structure of the lifting mechanism 2. The automatic biomass collection device for grassland quadrats includes: a base plate 1, on the top of which the lifting mechanism 2 is fixedly installed, and on the lifting mechanism 2, a sampling frame 3 is fixedly installed; the sampling frame 3 is provided with a squeezing mechanism 4, and on the top of the base plate 1, a power mechanism 5 is provided on one side of the sampling frame 3, the power mechanism 5 being adapted to the squeezing mechanism 4; The sampling frame 3 is adapted to the grassland quadrat, and the bottom of the sampling frame 3 is inserted into the soil of the grassland quadrat during use; The power mechanism 5 is used to trim organisms within the grassland quadrats located in the sampling frame 3; The squeezing mechanism 4 is used to squeeze and collect the organisms in the sampling frame 3 while the power mechanism 5 is cutting the organisms in the grassland quadrats within the sampling frame 3.

[0025] The base plate 1 includes a plate body 101, the top of the plate body 101 is provided with a sliding hole 102, the outer wall of the sampling frame 3 is slidably connected to the inner wall of the sliding hole 102, the top of the plate body 101 is provided with at least one guide hole 103, and the bottom of the plate body 101 is fixedly installed with a guide block 104.

[0026] The lifting mechanism 2 includes multiple connecting blocks 204 fixedly installed outside the sampling frame 3. A first hydraulic cylinder 203 is fixedly installed on the top of the connecting block 204. The output shaft of the first hydraulic cylinder 203 is fixedly connected to the connecting block 204. A support plate 202 is fixedly installed on the top of the first hydraulic cylinder 203. Multiple support rods 201 are fixedly installed on the bottom of the support plate 202. The bottom end of the support rods 201 is fixedly connected to the top of the base plate 1.

[0027] The sampling tube 3 includes a frame 31. Cutting holes 32 are provided on both sides of the frame 31. Multiple limiting blocks 33 are fixedly installed on the outer wall of the frame 31. The limiting blocks 33 are adapted to the base plate 1. Mounting holes 34 are provided on the other two sides of the frame 31. Limiting strips 36 are fixedly installed on the top inner wall of the mounting holes 34. An annular cutter 35 is fixedly installed on the bottom of the frame 31. At least one pusher hole 37 is provided on one side of the frame 31.

[0028] The extrusion mechanism 4 includes two symmetrically arranged side plates 41, with multiple extrusion collection mesh plates 42 between the two side plates 41. A first connecting rod 43 is provided at the bottom of each side plate 41, penetrating through the side plate 41. Multiple linearly distributed support blocks 44 are fixedly installed at the bottom of each extrusion collection mesh plate 42. A second connecting rod 45 is provided below each extrusion collection mesh plate 42, penetrating through the multiple support blocks 44. Rotating blocks 49 are threadedly installed at both ends of the first connecting rod 43 and both ends of the second support rod 45. A fixing block 46 is rotatably sleeved on the outer side of each rotating block 49. Mounting frames 47 are provided on both sides of each fixing block 46. A first spring 48 is provided between each of the two adjacent mounting frames 47, with both ends of the first spring 48 fixedly installed on the inner wall of the mounting frame 47.

[0029] The second support rod 45 passes through the mounting hole 34, and the bottom of the collecting extrusion mesh plate 42 contacts the top of the limiting strip 36.

[0030] The fixing block 46, the mounting frame 47, the first spring 48, and the rotating block 49 are all located outside the sampling frame 3.

[0031] The power mechanism 5 includes two second hydraulic cylinders 501 symmetrically arranged on the top of the base plate 1. A common connecting plate 502 is fixedly mounted on the output shafts of the two second hydraulic cylinders 501. A mounting block 503 is fixedly mounted on the bottom of the connecting plate 502. A common cutter 504 is fixedly mounted on the bottom of the two mounting blocks 503. The cutter 504 is slidably mounted on the bottom of the base plate 1. A guide plate 505 is fixedly mounted on the top of the base plate 1, and two push rods are slidably mounted on the guide plate 505. 507, the push rod 507 is adapted to pass through the push block hole 37, and the connecting plate 502 is slidably connected to the connecting plate 502. The push rod 507 is fixedly installed with a push block 506 at one end near the sampling frame 3. The push block 506 and the two push rods 507 are fixedly installed with the same push plate 508 at the ends away from the sampling frame 3. A second spring 509 is sleeved on the outside of the push rod 507. The two ends of the second spring 509 are fixedly connected to the connecting plate 502 and the push plate 508 respectively.

[0032] The top of the cutter 504 is provided with a guide groove 510, and the guide block 104 is slidably installed in the guide groove 510.

[0033] A connecting seat 511 is fixedly installed on the top of the base plate 1, and the second hydraulic cylinder 501 is fixedly installed on one side of the connecting seat 511. A plurality of fixing rings 512 are fixedly installed on the top of the base plate 1, and the cylinder body of the second hydraulic cylinder 501 is fixedly installed in the fixing rings 512.

[0034] The working principle of the automatic aboveground biomass collection device for grassland quadrats provided by this invention is as follows: When in use, first move the entire device to the grass quadrat and align the frame 31 of the sampling frame 3 with the grass quadrat. Then start the first hydraulic cylinder 203. The output shaft of the first hydraulic cylinder 203 pushes the connecting block 204 to move downward. The connecting block 204 drives the frame 31 to move downward. The frame 31 pushes the annular cutter 35 downward until the limiting block 33 on the frame 31 contacts the base plate 1. At this time, the first hydraulic cylinder 203 is turned off. When it is necessary to cut and collect the plants in the sampling frame 3, simply start the second hydraulic cylinder 501. The second hydraulic cylinder 501 drives the connecting plate 502 to move, the connecting plate 502 drives the mounting block 503 to move, and the mounting block 503 drives the cutter 504 to move at the bottom of the base plate 1, so that the cutter 504 passes through the cutter hole 32 to cut the organisms in the sampling frame 3. Since the cutter 504 is located below the base plate 1, it can achieve cutting the plants close to the ground, thereby improving the accuracy of the collected data. Furthermore, during the above process, the guide block 104 moves within the guide groove 510, ensuring the normal operation of the cutter 504; At the same time, the connecting plate 502 drives one end of the second spring 509 to move, the second spring 509 is stretched, the second spring 509 drives the push plate 508 to move, the push plate 508 drives the push rod 507 to move, the push rod 507 pushes the push block 506 to move, so that the push block 506 passes through the push block hole 37 and enters the frame 31 to contact the side plate 41. As the second hydraulic cylinder 501 continues to operate, the pusher block 507 pushes the side plate 41 to continue moving. The side plate 41, together with the collecting and squeezing mesh plate 42, squeezes the organisms in the frame 31 until the side plate 41 can no longer be compressed. At this time, the two side plates 41 and multiple collecting and squeezing mesh plates 42 have squeezed and collected the cut plants in the frame 31. This process also facilitates the cutting work of the cutter 504 on the organisms. After the cutter 504 cuts the organisms in the sampling frame 3, the entire device is moved to the corresponding position to collect the organisms in the squeezing mechanism 4 in the collection tube 3, thus completing the automatic collection of aboveground biomass in the grassland quadrats.

[0035] Compared with related technologies, the automatic aboveground biomass collection device for grassland quadrats provided by this invention has the following beneficial effects: This invention provides an automatic biomass collection device for grassland quadrats. The guide block 104 and guide groove 510 facilitate the normal operation of the cutter 504 on the base plate 1, enabling close-to-the-ground cutting of plants in the grassland quadrats and ensuring sampling accuracy. The extrusion mechanism 4, composed of a side plate 41, a collecting and extruding mesh plate 42, a first connecting rod 43, a support block 44, a second connecting rod 45, a fixing block 46, a mounting frame 47, a first spring 48, and a rotating block 49, automatically extrudes and collects the cut plants in the grassland quadrats, effectively preventing missed plants and preventing the cutter 504 from crushing the plants during cutting, thus improving the accuracy of the collected data. The device also utilizes a second hydraulic cylinder 501 and a connecting... The power mechanism 5, consisting of a connecting plate 502, mounting block 503, cutter 504, guide plate 505, push block 506, push rod 507, push plate 508, second spring 509, guide groove 510, connecting seat 511, and fixing ring 512, can cut the plants on the grassland quadrat while simultaneously pushing one of the side plates 41 to move, thereby enabling the extrusion mechanism 4 to operate normally. This ensures that the plants are effectively collected while being cut, preventing any plants from being lost after being cut. The lifting mechanism 2, consisting of a support rod 201, support plate 202, first hydraulic cylinder 203, and connecting block 204, can lift the sampling frame 3, facilitating the alignment of the cutter 504 with the cutter hole 32. This allows the cutter to collect the plants in the sampling frame 3 close to the ground, thereby improving the accuracy of the collected data.

[0036] The above description is merely an embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structural or procedural transformations made based on the content of the present invention's specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of the present invention.

Claims

1. An automatic biomass collection device for grassland quadrats, characterized in that, include: A base plate, on the top of which a lifting mechanism is fixedly installed, and on which a sampling frame is fixedly installed; a squeezing mechanism is provided inside the sampling frame, and a power mechanism located on one side of the sampling frame is provided on the top of the base plate, the power mechanism being adapted to the squeezing mechanism; The sampling frame is adapted to the grassland quadrat, and the bottom of the sampling frame is inserted into the soil of the grassland quadrat during use; The power mechanism is used to trim organisms within the grassland quadrats located in the sampling frame; The squeezing mechanism is used to squeeze and collect organisms in the sampling frame while the power mechanism cuts the organisms in the grassland quadrats within the sampling frame.

2. The automatic aboveground biomass collection device for grassland quadrats according to claim 1, characterized in that, The base plate includes a plate body, the top of which has a sliding hole. The outer wall of the sampling frame is slidably connected to the inner wall of the sliding hole. The top of the plate body has at least one guide hole, and the bottom of the plate body has a guide block fixedly installed.

3. The automatic aboveground biomass collection device for grassland quadrats according to claim 1, characterized in that, The lifting mechanism includes multiple connecting blocks fixedly installed outside the sampling frame. A first hydraulic cylinder is fixedly installed on the top of the connecting block. The output shaft of the first hydraulic cylinder is fixedly connected to the connecting block. A support plate is fixedly installed on the top of the first hydraulic cylinder. Multiple support rods are fixedly installed on the bottom of the support plate. The bottom end of the support rods is fixedly connected to the top of the base plate.

4. The automatic biomass collection device for grassland quadrats according to claim 2, characterized in that, The sampling tube includes a frame, with cutting holes on both sides of the frame. Multiple limiting blocks are fixedly installed on the outer wall of the frame, and the limiting blocks are adapted to the base plate. Mounting holes are opened on the other two sides of the frame. Limiting strips are fixedly installed on the top inner wall of the mounting holes. An annular cutter is fixedly installed on the bottom of the frame. At least one push block hole is opened on one side of the frame.

5. The automatic aboveground biomass collection device for grassland quadrats according to claim 4, characterized in that, The extrusion mechanism includes two symmetrically arranged side plates, with multiple extrusion collection mesh plates between the two side plates. A first connecting rod is provided at the bottom of each side plate, penetrating through the side plate. Multiple linearly distributed support blocks are fixedly installed at the bottom of each extrusion collection mesh plate. A second connecting rod is provided below the extrusion collection mesh plate, penetrating through the multiple support blocks. Rotating blocks are threaded onto both ends of the first connecting rod and both ends of the second support rod. Fixed blocks are rotatably sleeved on the outer side of each rotating block. Mounting frames are provided on both sides of each fixed block. A first spring is provided between each of the two adjacent mounting frames, with both ends of the first spring fixedly installed on the inner wall of the mounting frame.

6. The automatic aboveground biomass collection device for grassland quadrats according to claim 5, characterized in that, The second support rod passes through the mounting hole, and the bottom of the collecting extrusion mesh plate contacts the top of the limiting strip.

7. The automatic aboveground biomass collection device for grassland quadrats according to claim 5, characterized in that, The fixed block, the mounting frame, the first spring, and the rotating block are all located outside the sampling frame.

8. The automatic aboveground biomass collection device for grassland quadrats according to claim 4, characterized in that, The power mechanism includes two second hydraulic cylinders symmetrically arranged on the top of the base plate. A common connecting plate is fixedly installed on the output shaft of the two second hydraulic cylinders. An mounting block is fixedly installed on the bottom of the connecting plate. A common cutter is fixedly installed on the bottom of the two mounting blocks. The cutter is slidably installed on the bottom of the base plate. A guide plate is fixedly installed on the top of the base plate. Two push rods are slidably installed on the guide plate. The push rods pass through the push block holes and are adapted to each other. A connecting plate is slidably connected to the connecting plate. A push block is fixedly installed on the end of the push rod near the sampling frame. A common push plate is fixedly installed on the push block and the ends of the two push rods away from the sampling frame. A second spring is sleeved on the outside of the push rod. The two ends of the second spring are fixedly connected to the connecting plate and the push plate, respectively.

9. The automatic aboveground biomass collection device for grassland quadrats according to claim 8, characterized in that, The top of the cutter has a guide groove, and the guide block is slidably installed in the guide groove.

10. The automatic aboveground biomass collection device for grassland quadrats according to claim 5, characterized in that, A connecting seat is fixedly installed on the top of the base plate, the second hydraulic cylinder is fixedly installed on one side of the connecting seat, and multiple fixing rings are fixedly installed on the top of the base plate, with the cylinder body of the second hydraulic cylinder fixedly installed inside the fixing rings.

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