Field plant resistance coefficient measuring device

Abstract

The invention relates to the technical field of field measuring equipment, in particular to a field plant resistance coefficient measuring device which comprises an annular track, a front supporting block, a rear supporting block and a synchronizing mechanism, a fixing mechanism is arranged at the bottom of the annular track, and two swing shafts are rotationally arranged at the bottom of each of the front supporting block and the rear supporting block; a mounting block is mounted at the bottom of the swing shaft, two movable clamping wheels are rotationally arranged at the bottom of the mounting block, a front lifting mechanism is arranged at the center of the top of the front supporting block, a rear lifting mechanism is arranged at the head end of the top of the rear supporting block, fixing shafts are vertically arranged at the tops of the front lifting mechanism and the rear lifting mechanism, and shaft sleeves are arranged on the fixing shafts; a transverse adjusting mechanism is arranged on the shaft sleeve, a wind speed and pressure meter is installed on the transverse adjusting mechanism, a transverse connecting rod is further arranged on the shaft sleeve of the rear lifting mechanism, and a wind vane is fixedly connected to the transverse connecting rod. According to the invention, the accuracy of measuring the resistance coefficient of the plant is improved.

Description

Technical Field

[0001] The invention relates to the technical field of field measurement equipment, in particular to a device for measuring resistance coefficient of field plants. Background Art

[0002] The wind and sand activities caused by desertification pose a great threat to the life, health and property safety of our country's citizens. In order to reduce the damage of wind and sand disasters to national production and life, plant sand fixation is widely used in various wind and sand fixation projects. In order to improve the efficiency of plant wind and sand fixation, it is very important to study the relationship between porosity and its resistance coefficient.

[0003] Experiments on the determination of plant drag coefficients are generally conducted in a wind tunnel with a single wind direction, using a fixed pitot tube to measure wind speed and wind pressure before calculation. However, due to the limited size of the wind tunnel, plant models are often used instead of real plants in the field for testing, which can produce large errors. The fixed pitot tube in the wind tunnel is difficult to adapt to the complex and changeable wind direction in the field. Traditional wind speed and wind pressure measurements in the field are generally achieved through handheld anemometers, and the human body will also have a great impact on wind speed. Summary of the invention

[0004] In order to make up for the above shortcomings, the present invention provides a device for measuring resistance coefficient of outdoor plants to solve the problem of how to improve the accuracy of measuring resistance coefficient of plants proposed in the above background technology.

[0005] The technical solution of the present invention is: A device for measuring resistance coefficient of outdoor plants comprises a circular track, a front support block, a rear support block and a synchronization mechanism, wherein a fixing mechanism for fixing the circular track to the ground is provided at the bottom of the circular track, two symmetrically arranged swing shafts are rotatably provided at the bottom of the front support block and the rear support block, a mounting block is installed at the bottom of the swing shaft, and two symmetrically arranged moving clamping wheels that cooperate with the circular track for movement are rotatably provided at the bottom of the mounting block, a front lifting mechanism is provided at the center of the top of the front support block, and a rear lifting mechanism is provided at the head end of the top of the rear support block, a fixed shaft is vertically provided at the top of the front lifting mechanism and the rear lifting mechanism, a shaft sleeve is provided on the fixed shaft, a lateral adjustment mechanism is provided on the shaft sleeve, a wind speed and wind pressure meter is installed on the lateral adjustment mechanism, a transverse connecting rod is also provided on the shaft sleeve of the rear lifting mechanism, a wind vane is fixedly connected to the transverse connecting rod, the two wind speed and wind pressure meters are arranged opposite to each other, and the two ends of the synchronization mechanism are respectively connected to the front support block and the rear support block.

[0006] Preferably, the annular track comprises a first track, a second track, a third track and a fourth track connected in sequence, the side walls of both sides of the first track are provided with protrusions, the protrusions are provided with threaded holes, and first bolts are installed in the threaded holes, the bottoms of both sides of the second track are provided with embedded grooves matching the protrusions, the tops of both sides of the second track are provided with countersunk holes connected to the embedded grooves, the third track has the same structure as the first track, and the fourth track has the same structure as the second track.

[0007] Preferably, the fixing mechanism includes four fixing components, which are respectively connected to the first track, the second track, the third track and the fourth track, the fixing component includes a fixing block and a first screw rod, an extension plate is provided at the bottom end of a side wall of one side of the fixing block, a through hole is provided on the extension block, a fixing pin is provided in the through hole, a slide groove is provided at the top of one side of the fixing block, a slider is provided in the slide groove for sliding, a vertically arranged second screw rod is provided at the top of the slider, a locking cap is screwed on the second screw rod, a rotating seat is provided at the top of the second screw rod, a connecting sleeve cooperating with the first screw rod is rotatably provided on the rotating seat, a moving groove for the second screw rod to move is provided at the top of the fixing block, and the first screw rod is vertically fixed to the bottom of the first track.

[0008] Preferably, the locking cap and the connecting sleeve are both provided with anti-slip grooves.

[0009] Preferably, the front lifting mechanism includes an outer lifting sleeve, a middle lifting sleeve is slidably provided inside the outer lifting sleeve, the middle lifting sleeve is provided with a first positioning component for positioning it on the outer lifting sleeve, an inner lifting sleeve is slidably provided inside the middle lifting sleeve, the inner lifting sleeve is provided with a second positioning component for positioning it on the middle lifting sleeve, the fixed shaft is vertically arranged on the top of the inner lifting sleeve, and the rear lifting mechanism has the same structure as the front lifting mechanism.

[0010] Preferably, the first positioning component includes a third screw and an abutment plate, the third screw is screwed with a first nut, the abutment plate is provided with a first through hole for the third screw to pass through, a lifting groove for the third screw to move up and down is provided on one side outer wall of the outer lifting sleeve, the third screw is horizontally fixed on the outer wall of the middle lifting sleeve, the second positioning component includes a first positioning plug rod, and a plurality of first positioning holes are provided on one side outer wall of the inner lifting sleeve, which are arranged at equal intervals along its height direction and are positioned and plugged with the first positioning plug rod.

[0011] Preferably, a first buckle is provided on the outer wall of the inner lifting sleeve near the top thereof, and a second buckle is provided on the top of each of the front support block and the rear support block, and the first buckle is fixedly connected to the second buckle by a connecting rope.

[0012] Preferably, the lateral adjustment mechanism includes an outer adjusting tube and an inner telescopic rod, a protrusion is provided on the top of the head end of the outer adjusting tube, a plug-in hole is provided on the top of the protrusion, a second positioning rod is slidably provided in the plug-in hole, a pull handle is provided on the top of the second positioning rod, a spring is provided between the pull handle and the protrusion, the spring is sleeved on the second positioning rod, and the inner telescopic rod is provided with a plurality of second positioning holes which are equidistantly arranged along its length direction and plug-matched with the second positioning rod, the outer adjusting tube is horizontally fixed on the outer wall of the sleeve, the inner telescopic rod is slidably arranged in the outer adjusting tube, and the wind speed and pressure meter is fixed on the inner telescopic rod.

[0013] Preferably, the sleeve is provided with a second through hole, the second through hole is provided with a second bolt, the second bolt is threaded with a second nut, and the fixed shaft is provided with a plurality of third positioning holes which are arranged at equal intervals along its height direction and are used for positioning and fitting the second bolt.

[0014] Preferably, the synchronization mechanism includes two arc-shaped synchronization rods and four connecting seats, both ends of the arc-shaped synchronization rods are provided with synchronization blocks, the connecting seats are provided with slots that are plugged into and cooperate with the synchronization blocks, the slot walls are provided with through slots for the arc-shaped synchronization rods to pass through, and the four connecting seats are respectively connected to the side walls of the front support block and the rear support block.

[0015] Compared with the prior art, the present invention has the following beneficial effects: Firstly, the present invention adopts a fixing mechanism to be fixed on the ground of a wild desert, and then the circular track is stably fixed on the fixing mechanism. The weather vane can use wind force to drive the front support block and the rear support block to move on the circular track, and the front support block and the rear support block can always move synchronously through the synchronization mechanism. Then, the plant resistance coefficient can be calculated according to the data measured by the two wind speed and pressure meters, thereby improving the measurement accuracy and making the operation simple and convenient.

[0016] Secondly, the circular track of the present invention adopts an assembly installation method of a first track, a second track, a third track, and a fourth track, which is easy to carry and install.

[0017] Thirdly, the fixed axis of the present invention uses a two-level adjustment method to adjust the height, thereby increasing the scope of application and flexibility and improving the accuracy of measurement.

[0018] Fourthly, the horizontal position and height position of the wind speed and pressure meter of the present invention can be fine-tuned, which further improves flexibility and measurement accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the three-dimensional structure of the field plant resistance coefficient measuring device of the present invention; Figure 2It is a structural schematic diagram of the circular track and the fixing mechanism of the present invention; Figure 3 It is a structural schematic diagram of the fixing mechanism of the present invention; Figure 4 It is a partial split schematic diagram of the circular track of the present invention; Figure 5 It is a structural schematic diagram of the front lifting mechanism of the present invention; Figure 6 It is a partial cross-sectional view of the front lifting mechanism of the present invention.

[0020] In the figure: 1. Circular track; 11. First track; 111. Protrusion; 112. Threaded hole; 113. First bolt; 12. Second track; 121. Embedded groove; 122. Countersunk hole; 13. Third track; 14. Fourth track; 2. Front support block; 21. Swing shaft; 22. Mounting block; 23. Moving clamp wheel; 24. Second buckle ring; 3. Rear support block; 4. Synchronous mechanism; 41. Arc-shaped synchronous rod; 411. Synchronous plug block; 42. Connecting seat; 421. Slot; 422. Through slot; 5. Fixing mechanism; 51. Fixing block; 511. Slide slot; 512. Moving slot; 52. First screw rod; 53. Extension plate; 531. Through hole; 532. Fixing pin; 54. Sliding block; 541. Second screw rod; 542. Locking cap; 543. Rotating seat; 544. Connecting sleeve; 6. Front Lifting mechanism; 61, outer lifting sleeve; 611, lifting slot; 62, middle lifting sleeve; 63, inner lifting sleeve; 631, first positioning rod; 632, first buckle; 633, first positioning hole; 64, first positioning assembly; 641, third screw; 642, abutment plate; 643, first nut; 644, first through hole; 7, rear lifting mechanism; 8, fixed shaft; 81, sleeve; 811, second through hole; 812, second bolt; 813, second nut; 82, horizontal connecting rod; 821, weather vane; 83, third positioning hole; 9, horizontal adjustment mechanism; 91, outer adjustment tube; 911, protrusion; 912, plug-in hole; 913, second positioning rod; 914, pull handle; 915, spring; 92, inner telescopic rod; 921, second positioning hole; 10, wind speed and pressure meter. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0022] See also Figure 1-6The present invention describes the above technical solution in detail through the following embodiments: A device for measuring resistance coefficient of outdoor plants, comprising a circular track 1, a front support block 2, a rear support block 3 and a synchronization mechanism 4, wherein a fixing mechanism 5 for fixing the circular track 1 to the ground is provided at the bottom, two symmetrically arranged swing shafts 21 are rotatably provided at the bottom of the front support block 2 and the rear support block 3, a mounting block 22 is installed at the bottom of the swing shaft 21, two symmetrically arranged moving clamping wheels 23 that are matched with the circular track 1 are rotatably provided at the bottom of the mounting block 22, and a front lifting mechanism is provided at the center of the top of the front support block 2 6, a rear lifting mechanism 7 is provided at the head end of the top of the rear supporting block 3, a fixed shaft 8 is vertically provided on the top of the front lifting mechanism 6 and the rear lifting mechanism 7, a shaft sleeve 81 is provided on the fixed shaft 8, a lateral adjustment mechanism 9 is provided on the shaft sleeve 81, a wind speed and pressure meter 10 is installed on the lateral adjustment mechanism 9, a transverse connecting rod 82 is also provided on the shaft sleeve 81 of the rear lifting mechanism 7, a wind vane 821 is fixedly connected to the transverse connecting rod 82, the two wind speed and pressure meters 10 are arranged opposite to each other, and the two ends of the synchronization mechanism 4 are respectively connected to the front supporting block 2 and the rear supporting block 3.

[0023] The present invention adopts a fixing mechanism 5 to fix it on the ground of a wild desert, and then the circular track 1 is stably fixed on the fixing mechanism 5. The weather vane 821 can use wind force to drive the front support block 2 and the rear support block 3 to move on the circular track 1, and the moving clamping wheel 23 can ensure that the front support block 2 and the rear support block 3 move stably on the circular track 1. Then, the drag coefficient is calculated by the data measured by the wind speed and wind pressure meter 10 on the front support block 2 and the data measured by the wind speed and wind pressure meter 10 on the rear support block 3. The data measured by the wind speed and wind pressure meter 10 on the front support block 2 and the data measured by the wind speed and wind pressure meter 10 on the rear support block 3 are measured at the relative position of the circular track 1. The circular track 1 is located at the periphery of the plant to be tested, so the positions of the two wind speed and wind pressure meters 10 are always at the relative positions of the periphery of the plant to be tested, the plant to be tested is between the two wind speed and wind pressure meters 10, and the two wind speed and wind pressure meters 10 and the plant to be tested between them are always in a straight line, as follows:

[0024]

[0025] in, represents the pressure difference, represents the wind pressure measured by the wind speed and pressure instrument 10 on the front support block 2, represents the wind pressure measured by the wind speed and pressure instrument 10 on the rear support block 3, represents the drag coefficient, represents the density of air, Represents the wind speed measured by the wind speed and pressure instrument 10 on the front support block 2.

[0026] This structure does not require holding, which improves the accuracy of plant resistance coefficient measurement.

[0027] The circular track 1 includes a first track 11, a second track 12, a third track 13 and a fourth track 14 which are connected in sequence. Both side walls of the first track 11 are provided with protrusions 111, and threaded holes 112 are provided on the protrusions 111. First bolts 113 are installed in the threaded holes 112. Both bottoms of the second track 12 are provided with embedded grooves 121 matching the protrusions 111, and both tops of the second track 12 are provided with countersunk holes 122 connected with the embedded grooves 121. The third track 13 has the same structure as the first track 11, and the fourth track 14 has the same structure as the second track 12. The first track 11, the second track 12, the third track 13 and the fourth track 14 can be quickly spliced ​​together, are easy to disassemble, easy to carry, and convenient to be installed in the wild desert.

[0028] The fixing mechanism 5 includes four fixing components, which are respectively connected to the first track 11, the second track 12, the third track 13 and the fourth track 14. The fixing components include a fixing block 51 and a first screw 52. An extension plate 53 is provided at the bottom end of a side wall of one side of the fixing block 51. A through hole 531 is provided on the extension block. A fixing pin 532 is provided in the through hole 531. A slide groove 511 is provided at the top of one side of the fixing block 51. A slider 54 is slidably provided in the slide groove 511. A vertically arranged second screw 541 is provided at the top of the slider 54. A locking cap 542 is screwed on the second screw 541. A rotating seat 543 is provided at the top of the second screw 541. A connecting sleeve 544 cooperating with the first screw 52 is rotatably provided on the rotating seat 543. A moving groove 512 for the second screw 541 to move is provided at the top of the fixing block 51. The first screw 52 is vertically fixed to the bottom of the first track 11.

[0029] The extension plate 53 can be fixed on the wild desert by fixing the pin 532, that is, the fixing block 51 is also fixed. Since the wild desert is not flat, the extension plate 53 can be fixed horizontally with a level meter first, and then the position of the slider 54 is adjusted so that the connecting sleeve 544 can be aligned with the first screw rod 52. After alignment, the second screw rod 541 can be locked in this position by rotating the locking cap 542, that is, the slider 54 and the connecting sleeve 544 are locked in this position, and then the connecting sleeve 544 is rotated so that the connecting sleeve 544 can be connected to the first screw rod 52. The depth of the first screw rod 52 entering the connecting sleeve 544 is achieved by adaptively rotating the connecting sleeve 544 according to the installation balance of the circular track 1.

[0030] The locking cap 542 and the connecting sleeve 544 are both provided with anti-skid patterns to increase friction and improve the stability of the hand when rotating the locking cap 542 and the connecting sleeve 544 .

[0031] The front lifting mechanism 6 includes an outer lifting sleeve 61, a middle lifting sleeve 62 is slidably provided inside the outer lifting sleeve 61, the middle lifting sleeve 62 is provided with a first positioning component 64 for positioning it on the outer lifting sleeve 61, an inner lifting sleeve 63 is slidably provided inside the middle lifting sleeve 62, the inner lifting sleeve 63 is provided with a second positioning component for positioning it on the middle lifting sleeve 62, the fixed shaft 8 is vertically arranged on the top of the inner lifting sleeve 63, and the rear lifting mechanism 7 has the same structure as the front lifting mechanism 6.

[0032] A two-level adjustment is adopted to adjust the height of the fixed shaft 8. First, the middle lifting sleeve 62 is pulled out from the outer lifting sleeve 61, and the height of the fixed shaft 8 is adjusted by the first level. The middle lifting sleeve 62 can be positioned by the first positioning component 64. If the fixed shaft 8 still does not meet the measurement requirements at this time, the inner lifting sleeve 63 is pulled out from the middle lifting sleeve 62, and the height of the fixed shaft 8 is adjusted for the second time. The inner lifting sleeve 63 can be positioned by the second positioning component. The height of the fixed shaft 8 can be flexibly adjusted, thereby improving the flexibility of measurement.

[0033] The first positioning component 64 includes a third screw 641 and an abutment piece 642, the third screw 641 is screwed with a first nut 643, the abutment piece 642 is provided with a first through hole 644 for the third screw 641 to pass through, a lifting groove 611 for the third screw 641 to move up and down is provided on the outer wall of one side of the outer lifting sleeve 61, the third screw 641 is horizontally fixed on the outer wall of the middle lifting sleeve 62, the second positioning component includes a first positioning plug rod 631, and a plurality of first positioning sockets 633 are provided on the outer wall of one side of the inner lifting sleeve 63, which are arranged at equal intervals along its height direction and are positioned and plugged with the first positioning plug rod 631.

[0034] The abutment sheet 642 is abutted against the outer wall of the outer lifting sleeve 61 through the first nut 643, and the first nut 643 also locks the third screw 641, that is, the middle lifting sleeve 62 is locked in position, and the first positioning rod 631 is inserted into the first positioning hole 633, and the first positioning rod 631 abuts against the top of the middle lifting sleeve 62, so that the inner lifting sleeve 63 can be locked in position.

[0035] A first buckle ring 632 is provided on the outer wall of the inner lifting sleeve 63 near the top thereof, and a second buckle ring 24 is provided on the top of each of the front support block 2 and the rear support block 3. The first buckle ring 632 and the second buckle ring 24 are fixedly connected by a connecting rope.

[0036] The stability of the inner lifting sleeve 63, the middle lifting sleeve 62 and the outer lifting sleeve 61 are enhanced by the first buckle 632, the second buckle 24 and the connecting rope. Of course, the number of the first buckle 632, the second buckle 24 and the connecting rope is not limited to one, and can also be two, three or four.

[0037] The lateral adjustment mechanism 9 includes an outer adjustment tube 91 and an inner telescopic rod 92. A protrusion 911 is provided on the top of the head end of the outer adjustment tube 91. A plug-in hole 912 is provided on the top of the protrusion 911. A second positioning rod 913 is slidably provided in the plug-in hole 912. A pull handle 914 is provided on the top of the second positioning rod 913. A spring 915 is provided between the pull handle 914 and the protrusion 911. The spring 915 is sleeved on the second positioning rod 913. The inner telescopic rod 92 is provided with a plurality of second positioning holes 921 which are equidistantly arranged along its length direction and plugged with the second positioning rod 913. The outer adjustment tube 91 is horizontally fixed on the outer wall of the sleeve 81. The inner telescopic rod 92 is slidably arranged in the outer adjustment tube 91. The wind speed and pressure meter 10 is fixed on the inner telescopic rod 92.

[0038] Pull up the handle 914, the handle 914 drives the second positioning rod 913, the spring 915 is stretched, and the second positioning rod 913 can gradually disengage from the second positioning hole 921 connected thereto, and then the anemometer 10 can be moved to change the horizontal position of the anemometer 10. After the movement is completed, the force of pulling up the handle 914 is removed, and the spring 915 uses its own elastic force to insert the second positioning rod 913 into the corresponding second positioning hole 921, thereby positioning the anemometer 10 at this time, thereby realizing the free horizontal adjustment of the anemometer 10 and further improving the flexibility of measurement.

[0039] The sleeve 81 is provided with a second through hole 811, in which a second bolt 812 is disposed, and a second nut 813 is screwed onto the second bolt 812. The fixed shaft 8 is provided with a plurality of third positioning holes 83 which are evenly spaced along its height direction and are used for positioning and cooperating with the second bolt 812.

[0040] Remove the second nut 813, pull out the second bolt 812, then move the sleeve 81, insert the second bolt 812 into the second through hole 811 and the corresponding third positioning hole 83, and then tighten the second nut 813 to position the sleeve 81. This allows the height of the anemometer 10 to be fine-tuned, further improving the flexibility of measurement.

[0041] The synchronization mechanism 4 includes two arc-shaped synchronization rods 41 and four connecting seats 42. Synchronization blocks 411 are provided at both ends of the arc-shaped synchronization rods 41. A slot 421 for plugging with the synchronization block 411 is provided on the connecting seat 42. The slot 421 has a through slot 422 on its wall for the arc-shaped synchronization rod 41 to pass through. The four connecting seats 42 are respectively connected to the side walls of the front support block 2 and the rear support block 3.

[0042] Two arc-shaped synchronization rods 41 are installed on four connecting seats 42. During installation, the arc-shaped synchronization rods 41 are quickly fixed by installing the synchronization plug-in block 411 into the slot 421, that is, the front support block 2 and the rear support block 3 are quickly connected together. Through the mutual cooperation of the two arc-shaped synchronization rods 41, the front support block 2 and the rear support block 3 can always move synchronously on the circular track 1.

[0043] Working principle: first fix the four fixing components around the wild plants on the wild desert ground, use a spirit level to level them when fixing, then install the circular track 1 to the four fixing components, rotate each connecting sleeve 544 in turn to make the circular track 1 in a horizontal state, then choose whether to pull out the middle lifting sleeve 62 and the inner lifting sleeve 63 according to actual measurement needs, so as to adjust the height of the fixed shaft 8, and then further fine-tune the height of the shaft sleeve 81 and adjust the horizontal position of the wind speed and pressure meter 10 according to actual measurement needs, and then measure.

Claims

1. A device for measuring resistance coefficient of outdoor plants, characterized in that: The invention comprises a circular track (1), a front support block (2), a rear support block (3) and a synchronization mechanism (4); the bottom of the circular track (1) is provided with a fixing mechanism (5) for fixing the circular track (1) on the ground; the bottoms of the front support block (2) and the rear support block (3) are both rotatably provided with two symmetrically arranged swing shafts (21); the bottoms of the swing shafts (21) are provided with a mounting block (22); the bottoms of the mounting block (22) are rotatably provided with two symmetrically arranged moving clamping wheels (23) that are matched with the circular track (1); the center of the top of the front support block (2) is provided with a front lifting mechanism (6); the top of the rear support block (3) is provided with a front lifting mechanism (6); A rear lifting mechanism (7) is provided at the end, a fixed shaft (8) is vertically provided at the top of the front lifting mechanism (6) and the rear lifting mechanism (7), a shaft sleeve (81) is provided on the fixed shaft (8), a lateral adjustment mechanism (9) is provided on the shaft sleeve (81), a wind speed and wind pressure meter (10) is installed on the lateral adjustment mechanism (9), a lateral connecting rod (82) is further provided on the shaft sleeve (81) of the rear lifting mechanism (7), a wind vane (821) is fixedly connected to the lateral connecting rod (82), the two wind speed and wind pressure meters (10) are arranged opposite to each other, and the two ends of the synchronization mechanism (4) are respectively connected to the front support block (2) and the rear support block (3).

2. The device for measuring resistance coefficient of outdoor plants according to claim 1, characterized in that: The annular track (1) comprises a first track (11), a second track (12), a third track (13) and a fourth track (14) which are connected in sequence. The first track (11) is provided with a protrusion (111) on both side walls. The protrusion (111) is provided with a threaded hole (112). A first bolt (113) is installed in the threaded hole (112). The bottom of both sides of the second track (12) is provided with an embedded groove (121) matching the protrusion (111). The top of both sides of the second track (12) is provided with a countersunk hole (122) connected to the embedded groove (121). The third track (13) has the same structure as the first track (11). The fourth track (14) has the same structure as the second track (12).

3. The device for measuring resistance coefficient of outdoor plants according to claim 2, characterized in that: The fixing mechanism (5) comprises four fixing components, the four fixing components are respectively connected to the first track (11), the second track (12), the third track (13) and the fourth track (14), the fixing components comprise a fixing block (51) and a first screw rod (52), an extension plate (53) is provided at the bottom end of a side wall of one side of the fixing block (51), a through hole (531) is provided on the extension block, a fixing pin (532) is provided in the through hole (531), a slide groove (511) is provided at the top end of one side of the fixing block (51), and the slide groove (511) is provided at the bottom end of the side wall of the fixing block (51). 1) is provided with a slider (54) for sliding inside, a second screw rod (541) is provided at the top of the slider (54) in a vertical arrangement, a locking cap (542) is screwed onto the second screw rod (541), a rotating seat (543) is provided at the top of the second screw rod (541), a connecting sleeve (544) for cooperating with the first screw rod (52) is rotatably provided on the rotating seat (543), a moving groove (512) for the second screw rod (541) to move is provided at the top of the fixed block (51), and the first screw rod (52) is vertically fixed to the bottom of the first track (11).

4. The device for measuring resistance coefficient of outdoor plants according to claim 3, characterized in that: The locking cap (542) and the connecting sleeve (544) are both provided with anti-slip grooves.

5. The device for measuring resistance coefficient of outdoor plants according to claim 1, characterized in that: The front lifting mechanism (6) comprises an outer lifting sleeve (61), a middle lifting sleeve (62) is slidably arranged inside the outer lifting sleeve (61), a first positioning component (64) for positioning the middle lifting sleeve (62) on the outer lifting sleeve (61), an inner lifting sleeve (63) is slidably arranged inside the middle lifting sleeve (62), a second positioning component for positioning the inner lifting sleeve (63) on the middle lifting sleeve (62), the fixed shaft (8) is vertically arranged on the top of the inner lifting sleeve (63), and the rear lifting mechanism (7) has the same structure as the front lifting mechanism (6).

6. The device for measuring resistance coefficient of outdoor plants according to claim 5, characterized in that: The first positioning component (64) includes a third screw (641) and an abutment plate (642), the third screw (641) is screwed with a first nut (643), the abutment plate (642) is provided with a first through hole (644) for the third screw (641) to pass through, a lifting groove (611) for the third screw (641) to move up and down is provided on the outer wall of one side of the outer lifting sleeve (61), the third screw (641) is horizontally fixed on the outer wall of the middle lifting sleeve (62), the second positioning component includes a first positioning plug rod (631), and a plurality of first positioning plug holes (633) are provided on the outer wall of one side of the inner lifting sleeve (63) which are arranged at equal intervals along the height direction and are positioned and plugged with the first positioning plug rod (631).

7. The device for measuring resistance coefficient of outdoor plants according to claim 6, characterized in that: A first buckle ring (632) is provided on the outer wall of the inner lifting sleeve (63) near the top thereof, and a second buckle ring (24) is provided on the top of each of the front support block (2) and the rear support block (3), and the first buckle ring (632) and the second buckle ring (24) are fixedly connected via a connecting rope.

8. The device for measuring resistance coefficient of outdoor plants according to claim 1, characterized in that: The lateral adjustment mechanism (9) comprises an outer adjustment tube (91) and an inner telescopic rod (92); a protrusion (911) is provided at the top of the head end of the outer adjustment tube (91); a plug hole (912) is provided at the top of the protrusion (911); a second positioning rod (913) is slidably provided in the plug hole (912); a pull handle (914) is provided at the top of the second positioning rod (913); a spring (915) is provided between the pull handle (914) and the protrusion (911). ), the spring (915) is sleeved on the second positioning plug rod (913), the inner telescopic rod (92) is provided with a plurality of second positioning plug holes (921) which are arranged at equal intervals along the length direction thereof and are plugged into and matched with the second positioning plug rod (913), the outer adjustment tube (91) is horizontally fixed on the outer wall of the shaft sleeve (81), the inner telescopic rod (92) is slidably arranged in the outer adjustment tube (91), and the wind speed and pressure meter (10) is fixed on the inner telescopic rod (92).

9. The device for measuring resistance coefficient of outdoor plants according to claim 1, characterized in that: The shaft sleeve (81) is provided with a second through hole (811), a second bolt (812) is provided in the second through hole (811), a second nut (813) is screwed onto the second bolt (812), and the fixed shaft (8) is provided with a plurality of third positioning holes (83) which are arranged at equal intervals along the height direction thereof and are used for positioning and matching the second bolt (812).

10. The device for measuring resistance coefficient of outdoor plants according to claim 1, characterized in that: The synchronization mechanism (4) comprises two arc-shaped synchronization rods (41) and four connection seats (42), both ends of the arc-shaped synchronization rod (41) are provided with synchronization plug blocks (411), the connection seats (42) are provided with slots (421) for plugging and matching with the synchronization plug blocks (411), the slot walls of the slots (421) are provided with through slots (422) for the arc-shaped synchronization rods (41) to pass through, and the four connection seats (42) are respectively connected to the head and tail ends of the front support block (2) and the rear support block (3).

Images