Portable quadrat frame for forestry field investigation

Abstract

The invention belongs to the technical field of quadrat frames, and particularly relates to a forestry field investigation portable quadrat frame which comprises a mounting block, a fixing block, a first L-shaped supporting rod, a second L-shaped supporting rod and two symmetrically-arranged fixing rods. One end of one fixing rod is fixedly connected with a sliding sleeve, a sliding rod is slidably inserted into the sliding sleeve, and one end of the sliding rod is fixedly connected with the other fixing rod. A guide rod is slidably inserted into one end of the first L-shaped supporting rod, one end of the guide rod is fixedly connected with the fixing block, a supporting block is fixedly connected to the end, away from the guide rod, of the first L-shaped supporting rod, a cavity is formed in the supporting block, a threaded rod is rotatably inserted into the cavity, and a worm wheel fixedly sleeves the threaded rod. Through the arrangement of the adjusting mechanism and the folding mechanism, the quadrat frame can be adjusted according to actual sampling requirements, and meanwhile, the quadrat frame is convenient to fold and store, so that the use convenience of the quadrat frame is effectively improved.

Description

Technical Field

[0001] The invention relates to the technical field of sample quadrat frames, in particular to a portable sample quadrat frame for forestry field investigation. Background Art

[0002] In the process of forestry scientific research, field surveys often require setting up sample plots in order to quickly obtain data such as the distribution quantity, coverage, height, growth characteristics, etc. of shrubs and herbs in the required survey area, and accumulate basic data for research on biodiversity and biomass of forest ecosystems. Therefore, sample plots have become one of the most commonly used and indispensable field survey tools.

[0003] The existing patent CN211085717U proposes a portable sample quadrat frame for forestry field surveys, wherein the connecting rope connects multiple connecting tubes end to end into a rectangular frame, and the outer wall of the connecting tube is in contact with the supporting plate of the adjacent connecting tube and the flange is embedded in the annular groove to achieve connection limitation. This design connects multiple connecting tubes end to end through the connecting rope, and when not in use, they can be disassembled and folded for easy storage and transportation; in addition, the matching of the supporting plate and the outer wall of the connecting tube and the flange embedded in the annular groove to achieve limitation, ensure the accuracy of the size and area of ​​the sample quadrat frame, and improve the accuracy of sampling.

[0004] However, the existing sample square frame has a relatively simple structure, and the sample square frame cannot be adjusted according to actual sampling needs. At the same time, the sample square frame is not convenient to fold and store, which affects the convenience of using the sample square frame. Summary of the invention

[0005] 1. Technical problems to be solved

[0006] The purpose of the present invention is to solve the problem in the prior art that the sample box cannot be adjusted according to the actual sampling needs and the sample box is not convenient to fold and store, and to propose a portable sample box for forestry field investigation.

[0007] 2. Technical solution

[0008] In order to achieve the above object, the present invention adopts the following technical solutions:

[0009] A portable sample box for forestry field survey, comprising a mounting block, a fixing block, a first L-shaped support rod, a second L-shaped support rod and two symmetrically arranged fixing rods, wherein the fixing block and the mounting block are respectively rotatably connected to the two fixing rods through a rotating shaft, one end of one of the fixing rods is fixedly connected to a sliding sleeve, a sliding rod is slidably inserted in the sliding sleeve, and one end of the sliding rod is fixedly connected to the other fixing rod;

[0010] A guide rod is slidably inserted into one end of the first L-shaped support rod, one end of the guide rod is fixedly connected to the fixed block, and one end of the first L-shaped support rod away from the guide rod is fixedly connected to the support block, a cavity is provided in the support block, a screw is rotatably inserted in the cavity, a worm wheel is fixedly sleeved on the screw, a worm engaged with the worm wheel is rotatably inserted in the cavity, one end of the worm passes through the inner wall of the cavity and is fixedly connected to a knob, a locking mechanism corresponding to the knob is provided on the outer wall of the support block, and a plurality of locking grooves corresponding to the locking mechanism are surrounded on the knob;

[0011] One end of the screw rod passes through the inner wall of the cavity and extends into the second L-shaped support rod, the second L-shaped support rod is provided with a thread groove corresponding to the screw rod, the bottom of the second L-shaped support rod is provided with a device groove, an adjustment block is slidably connected to the device groove through an adjustment rod, a stopper is fixedly connected to the top of the adjustment rod, a first spring is slidably sleeved on the adjustment rod, and both ends of the first spring are respectively fixedly connected to the stopper and the top of the second L-shaped support rod;

[0012] One end of the mounting block is fixedly connected to a baffle corresponding to the adjustment block, the second L-shaped support rod is fixedly connected to a gear rack, the mounting block is provided with a mounting groove corresponding to the gear rack, a gear meshing with the gear rack is rotatably connected in the mounting groove through a rotating rod, one end of the rotating rod passes through the inner wall of the mounting groove and is fixedly connected to a turntable, a clamping mechanism is slidably inserted into one end of the turntable, and a plurality of clamping grooves corresponding to the clamping mechanism are surrounded on the outer wall of the mounting block.

[0013] Preferably, a handle is fixedly connected to the side of the sliding sleeve away from the first L-shaped support rod.

[0014] Preferably, the sliding sleeve and one side of the first L-shaped support rod are fixedly connected with corresponding magnets.

[0015] Preferably, one end of the screw rod located in the thread groove is fixedly connected to a limiting block.

[0016] Preferably, the locking mechanism comprises an arc-shaped locking rod, which is rotatably connected to the support block via a pin shaft, a torsion spring is sleeved on the pin shaft, and two ends of the torsion spring respectively abut against the arc-shaped locking rod and the support block.

[0017] Preferably, one end of the second L-shaped support rod is fixedly connected to a connection block, and the connection block is connected to the support block via a telescopic rod.

[0018] Preferably, a transmission block is fixedly connected to the bottom of the gear rack, a transmission rod is fixedly connected in the mounting groove, and a through opening corresponding to the transmission rod is provided on the transmission block.

[0019] Preferably, the clamping mechanism comprises a clamping rod, one end of the clamping rod close to the mounting block is fixedly sleeved with a clamping sleeve, and one end of the clamping rod away from the clamping sleeve is fixedly connected with a pull rod.

[0020] Preferably, a second spring is sleeved on the clamping rod, and two ends of the second spring are fixedly connected to the pull rod and the rotating disk respectively.

[0021] 3. Beneficial effects

[0022] Compared with the prior art, the advantages of the present invention are:

[0023] (1) In the present invention, the sample box can be adjusted according to the actual sampling needs by setting the adjustment mechanism and the folding mechanism. At the same time, the sample box can be conveniently folded and stored, thereby effectively improving the convenience of using the sample box.

[0024] (2) In the present invention, the setting of the arc-shaped locking rod can facilitate the fixing of the knob, the telescopic rod can prevent the second L-shaped support rod from shaking, the limit block can prevent the screw rod from falling out of the thread groove, and the setting of the clamping rod can facilitate the fixing of the turntable, and the second spring can provide a certain elastic support for the clamping rod.

[0025] (3) In the present invention, the setting of the handle can facilitate carrying the sample box, and the setting of the magnet can fold and fix the sample box. At the same time, the first spring can play an elastic supporting role for the adjustment block, and the setting of the transmission block and the transmission rod can prevent the gear rack from shaking. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is a structural schematic diagram of a portable sample box for forestry field survey proposed by the present invention;

[0027] Figure 2 A schematic diagram of the side view of the rotating rod of a portable sample box for forestry field investigation proposed by the present invention;

[0028] Figure 3 for Figure 1 A schematic diagram of the structure at A;

[0029] Figure 4 for Figure 1 Schematic diagram of the structure at point B.

[0030] In the figure: 1 mounting block, 2 fixing block, 3 first L-shaped support rod, 4 second L-shaped support rod, 5 fixing rod, 6 rotating shaft, 7 sliding sleeve, 8 sliding rod, 9 guide rod, 10 supporting block, 11 screw, 12 worm gear, 13 worm, 14 knob, 15 device slot, 16 adjusting rod, 17 adjusting block, 18 block, 19 first spring, 20 baffle, 21 gear rack, 22 mounting slot, 23 rotating rod, 24 gear, 25 turntable, 26 handle, 27 magnet, 28 limit block, 29 arc locking rod, 30 pin shaft, 31 connecting block, 32 telescopic rod, 33 transmission block, 34 transmission rod, 35 clamping rod, 36 clamping sleeve, 37 pull rod, 38 second spring. DETAILED DESCRIPTION

[0031] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0032] Embodiment 1:

[0033] Reference Figure 1-4 , a portable sample box for forestry field investigation, comprising a mounting block 1, a fixing block 2, a first L-shaped support rod 3, a second L-shaped support rod 4 and two symmetrically arranged fixing rods 5, the fixing block 2 and the mounting block 1 are respectively rotatably connected with the two fixing rods 5 through a rotating shaft 6, and are used for folding the sample box, one end of one of the fixing rods 5 is fixedly connected with a sliding sleeve 7, and the side of the sliding sleeve 7 away from the first L-shaped support rod 3 is fixedly connected with a grip 26, which is convenient for carrying the sample box, and the sliding sleeve 7 and one side of the first L-shaped support rod 3 are fixedly connected with a correspondingly arranged magnet 27, which is convenient for folding and fixing the sample box, and a sliding rod 8 is slidably inserted in the sliding sleeve 7, and one end of the sliding rod 8 is fixedly connected with another fixing rod 5, which is used for adjusting the distance between the two fixing rods 5;

[0034] In the present invention, a guide rod 9 is slidably inserted at one end of the first L-shaped support rod 3, and one end of the guide rod 9 is fixedly connected to the fixed block 2. An end of the first L-shaped support rod 3 away from the guide rod 9 is fixedly connected to a support block 10 for installing a screw 11. One end of the second L-shaped support rod 4 is fixedly connected to a connecting block 31, and the connecting block 31 is connected to the support block 10 by a telescopic rod 32 to prevent the second L-shaped support rod 4 from shaking. A cavity is provided in the support block 10, and a screw 11 is rotatably inserted in the cavity to adjust the distance between the first L-shaped support rod 3 and the second L-shaped support rod 4. One end of the screw 11 located in the thread groove is fixedly connected to a limiting block 28 to prevent the screw 11 from falling off from the thread groove.

[0035] In the present invention, a worm wheel 12 is fixedly sleeved on the screw rod 11, and a worm 13 meshing with the worm wheel 12 is rotatably inserted in the cavity to drive the worm wheel 12 to rotate. One end of the worm 13 passes through the inner wall of the cavity and is fixedly connected with a knob 14 to drive the worm 13 to rotate. A locking mechanism corresponding to the knob 14 is provided on the outer wall of the support block 10. The knob 14 is surrounded by a plurality of locking grooves corresponding to the locking mechanism to fix the knob 14. The locking mechanism includes an arc-shaped locking rod 29, which is rotatably connected to the support block 10 through a pin shaft 30. A torsion spring is sleeved on the pin shaft 30. The two ends of the torsion spring are respectively against the arc-shaped locking rod 29 and the support block 10, so as to provide a certain torsional support for the arc-shaped locking rod 29.

[0036] In the present invention, one end of the screw rod 11 passes through the inner wall of the cavity and extends into the second L-shaped support rod 4. The second L-shaped support rod 4 is provided with a threaded groove corresponding to the screw rod 11. The bottom of the second L-shaped support rod 4 is provided with a device groove 15 for installing an adjustment block 17. The adjustment block 17 is slidably connected to the device groove 15 through an adjustment rod 16. The top of the adjustment rod 16 is fixedly connected with a stopper 18. The adjustment rod 16 is slidably sleeved with a first spring 19. The two ends of the first spring 19 are respectively fixedly connected to the stopper 18 and the top of the second L-shaped support rod 4, so as to play an elastic supporting role for the adjustment block 17.

[0037] In the present invention, one end of the mounting block 1 is fixedly connected with a baffle 20 corresponding to the adjusting block 17, and the second L-shaped support rod 4 is fixedly connected with a gear rack 21 for driving the second L-shaped support rod 4 to slide. The mounting block 1 is provided with a mounting groove 22 corresponding to the gear rack 21, and the bottom of the gear rack 21 is fixedly connected with a transmission block 33 for supporting the gear rack 21. A transmission rod 34 is fixedly connected in the mounting groove 22, and a through hole corresponding to the transmission rod 34 is provided on the transmission block 33. A gear 24 meshing with the gear rack 21 is rotatably connected in the mounting groove 22 through the rotating rod 23, so as to drive the gear rack 21 to slide. One end of the rotating rod 23 penetrates the inner wall of the mounting groove 22 and is fixedly connected with a rotating disk 25 for driving the rotating rod 23 to rotate. A clamping mechanism is slidably inserted at one end of the rotating disk 25, and a plurality of clamping grooves corresponding to the clamping mechanism are arranged around the outer wall of the mounting block 1 for fixing the rotating disk 25.

[0038] In the present invention, the clamping mechanism includes a clamping rod 35, one end of the clamping rod 35 close to the mounting block 1 is fixedly sleeved with a clamping sleeve 36, and the end of the clamping rod 35 away from the clamping sleeve 36 is fixedly connected with a pull rod 37. A second spring 38 is sleeved on the clamping rod 35, and the two ends of the second spring 38 are respectively fixedly connected to the pull rod 37 and the turntable 25, thereby providing a certain elastic support for the clamping rod 35.

[0039] In the present invention, the worm 13 is driven to rotate by rotating the knob 14, and the meshing action between the worm 13 and the worm wheel 12 can drive the screw 11 to rotate, so as to adjust the distance between the first L-shaped support rod 3 and the second L-shaped support rod 4. Then, the arc-shaped locking rod 29 is used to fix the knob 14, and the rotating rod 23 is driven to rotate by rotating the turntable 25. The meshing action between the gear 24 and the gear rack 21 can drive the second L-shaped support rod 4 to slide, so that the baffle 20 falls off from the bottom of the adjusting block 2. At the same time, the adjusting block 2 automatically extends out under the elastic support of the first spring 19, so as to adjust the distance between the mounting block 1 and the second L-shaped support rod 4. Then, the turntable 25 is fixed by the clamping rod 35. When the sample frame needs to be folded, the fixing rod 5 is rotated around the rotating shaft 6 to realize the folding of the sample frame.

[0040] In the present invention, the sample box can be adjusted according to actual sampling needs through the provision of the adjustment mechanism and the folding mechanism, and the sample box can be conveniently folded and stored, thereby effectively improving the convenience of use of the sample box.

[0041] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A portable sample box for forestry field survey, comprising a mounting block (1), a fixing block (2), a first L-shaped support rod (3), a second L-shaped support rod (4) and two symmetrically arranged fixing rods (5), characterized in that: The fixed block (2) and the mounting block (1) are rotatably connected to two fixed rods (5) respectively via a rotating shaft (6); one end of one of the fixed rods (5) is fixedly connected to a sliding sleeve (7); a sliding rod (8) is slidably inserted in the sliding sleeve (7); one end of the sliding rod (8) is fixedly connected to the other fixed rod (5); A guide rod (9) is slidably inserted into one end of the first L-shaped support rod (3), one end of the guide rod (9) is fixedly connected to the fixed block (2), one end of the first L-shaped support rod (3) away from the guide rod (9) is fixedly connected to the support block (10), a cavity is provided in the support block (10), a screw rod (11) is rotatably inserted in the cavity, a worm wheel (12) is fixedly sleeved on the screw rod (11), a worm (13) meshing with the worm wheel (12) is rotatably inserted in the cavity, one end of the worm (13) passes through the inner wall of the cavity and is fixedly connected to a knob (14), a locking mechanism corresponding to the knob (14) is provided on the outer wall of the support block (10), and a plurality of locking grooves corresponding to the locking mechanism are arranged around the knob (14); One end of the screw rod (11) passes through the inner wall of the cavity and extends into the second L-shaped support rod (4); the second L-shaped support rod (4) is provided with a thread groove corresponding to the screw rod (11); the bottom of the second L-shaped support rod (4) is provided with a device groove (15); an adjustment block (17) is slidably connected to the device groove (15) via an adjustment rod (16); a stopper (18) is fixedly connected to the top of the adjustment rod (16); a first spring (19) is slidably sleeved on the adjustment rod (16); and two ends of the first spring (19) are respectively fixedly connected to the stopper (18) and the top of the second L-shaped support rod (4); One end of the mounting block (1) is fixedly connected to a baffle (20) corresponding to the adjustment block (17); the second L-shaped support rod (4) is fixedly connected to a gear rack (21); a mounting groove (22) corresponding to the gear rack (21) is provided on the mounting block (1); a gear (24) meshing with the gear rack (21) is rotatably connected in the mounting groove (22) via a rotating rod (23); one end of the rotating rod (23) passes through the inner wall of the mounting groove (22) and is fixedly connected to a rotating disk (25); a clamping mechanism is slidably inserted into one end of the rotating disk (25); and a plurality of clamping grooves corresponding to the clamping mechanism are arranged around the outer wall of the mounting block (1).

2. A portable sample box for forestry field survey according to claim 1, characterized in that: A handle (26) is fixedly connected to the side of the sliding sleeve (7) away from the first L-shaped support rod (3).

3. A portable sample box for forestry field survey according to claim 1, characterized in that: The sliding sleeve (7) and one side of the first L-shaped support rod (3) are fixedly connected with a correspondingly arranged magnet (27).

4. A portable sample box for forestry field survey according to claim 1, characterized in that: One end of the screw rod (11) located in the thread groove is fixedly connected to a limiting block (28).

5. A portable sample box for forestry field survey according to claim 1, characterized in that: The locking mechanism comprises an arc-shaped locking rod (29), the arc-shaped locking rod (29) being rotatably connected to the support block (10) via a pin shaft (30), a torsion spring being sleeved on the pin shaft (30), and two ends of the torsion spring respectively abutting against the arc-shaped locking rod (29) and the support block (10).

6. A portable sample box for forestry field survey according to claim 1, characterized in that: One end of the second L-shaped support rod (4) is fixedly connected to a connection block (31), and the connection block (31) is connected to the support block (10) via a telescopic rod (32).

7. A portable sample box for forestry field survey according to claim 1, characterized in that: A transmission block (33) is fixedly connected to the bottom of the gear rack (21), a transmission rod (34) is fixedly connected inside the mounting groove (22), and a through opening corresponding to the transmission rod (34) is provided on the transmission block (33).

8. A portable sample box for forestry field survey according to claim 1, characterized in that: The clamping mechanism comprises a clamping rod (35), one end of the clamping rod (35) close to the mounting block (1) is fixedly sleeved with a clamping sleeve (36), and one end of the clamping rod (35) away from the clamping sleeve (36) is fixedly connected with a pull rod (37).

9. A portable sample box for forestry field survey according to claim 8, characterized in that: A second spring (38) is sleeved on the clamping rod (35), and two ends of the second spring (38) are respectively fixedly connected to the pull rod (37) and the rotating disk (25).

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