CN114413735A

CN114413735A - Be applied to coverability measuring device in bush field

Info

Publication number: CN114413735A
Application number: CN202210069192.6A
Authority: CN
Inventors: 曹晨; 张化永; 韩云翔; 韶峰; 王中玉
Original assignee: North China Electric Power University
Current assignee: North China Electric Power University
Priority date: 2022-01-21
Filing date: 2022-01-21
Publication date: 2022-04-29
Anticipated expiration: 2042-01-21
Also published as: CN114413735B

Abstract

The invention relates to the technical field of coverage measurement, and discloses a coverage measurement device applied to the field of brush, which comprises a mounting frame, wherein a first frame and a second frame are respectively rotatably mounted on two side edges adjacent to the mounting frame, the first frame and the second frame are identical in structure, the cross sections of the first frame and the second frame are I-shaped, rolling assemblies are respectively rotatably arranged on the outer sides of the first frame and the second frame, a third frame is movably mounted on the inner side of the first frame, and a third frame is movably mounted on the inner side of the second frame. The pull rope is pulled out and installed, so that the cover degree can be measured, and the device is convenient to use and carry.

Description

Be applied to coverability measuring device in bush field

Technical Field

The invention relates to the technical field of coverage measurement, in particular to a coverage measuring device applied to the field of shrubs.

Background

In recent years, the protection of our country to the ecological environment is continuously increased, especially for the ecological fragile grassland area, the shrub coverage refers to the ratio of the vertical projection area of the overground part of the shrub to the unit land area on the land, the shrub coverage is a comprehensive index for reflecting the bushy degree and the size of the photosynthesis area, and is an important index and a control standard for measuring the change of the regional ecological system, so that the measurement, calculation and statistics of the shrub coverage are important links in the ecological protection of the grassland. At present, scientific workers count the bush coverage, and mostly conduct sampling survey, namely, a plurality of survey points are set in a region to be surveyed, squares with a certain size are surrounded at each survey point through a string, then the bush coverage area in the squares is estimated through visual observation, and the bush coverage is calculated through the ratio of the bush coverage area to the circle area of the squares.

Disclosure of Invention

Technical problem to be solved

Aiming at the defects of the prior art, the invention provides a coverage measuring device applied to the brush field, and solves the problems in the background technology.

(II) technical scheme

In order to achieve the purpose, the invention provides the following technical scheme: a cover degree measuring device applied to the field of bush irrigation comprises a mounting frame, wherein a first frame and a second frame are respectively rotatably mounted on two side edges adjacent to the mounting frame, the first frame and the second frame are identical in structure, the cross sections of the first frame and the second frame are I-shaped, winding assemblies are respectively rotatably mounted on the outer sides of the first frame and the second frame, a third frame is movably mounted on the inner side of the first frame, a third frame is movably mounted on the inner side of the second frame, the end portions of the second frame and the third frame are respectively rotatably mounted at one ends, far away from the mounting frame, of the first frame and the second frame, the first frame, the second frame, the third frame and the fourth frame can be unfolded to form a rectangular frame, each winding assembly comprises a first rotating rod rotatably mounted on the outer sides of the first frame and the second frame, a plurality of rope sleeves are uniformly arranged on the first rotating rod, the rope sleeves are rotatably connected with the rotating rods, and pull ropes are wound on the rope sleeves, a lantern ring is fixedly connected to one end of the pull rope, away from the rope sleeve, a plurality of groups of slots are uniformly formed in the inner wall of the rope sleeve, a through groove is formed in the position, corresponding to the slots, of the top of the rotating rod, an inserting block is movably mounted in the through groove, a supporting plate is fixedly connected to the bottom of the inserting block, springs are fixedly connected to two sides of the upper end of the supporting plate respectively, the top of each spring is fixedly connected with the inner wall of the rotating rod, a rotating rod II is rotatably mounted in the rotating rod I, magnets are fixedly mounted on the outer sides of the rotating rod II and the corresponding positions of the supporting plate, corresponding magnets capable of repelling the magnets are fixedly mounted at the bottom of the supporting plate, one end of the rotating rod II extends to the outer side of the rotating rod I, rotating handles are fixedly connected to the end portions of the rotating rod II, movable cavities are formed in the frame III and the frame IV, a movable plate is slidably mounted in the movable cavities, and a plurality of groups of hooks are fixedly connected to the inner sides of the movable plate, the hook is in one-to-one correspondence with the lantern ring, the third frame and the four outer side walls of the frame are in threaded connection with bolts, and the end parts of the bolts extend into the movable cavity and are rotatably connected with the movable plate.

Preferably, the one end that the bull stick is close to the commentaries on classics handle is provided with spacing subassembly, spacing subassembly is including seting up spout on a bull stick lateral wall, the spout runs through a bull stick lateral wall, slidable mounting has stopper one in the spout, stopper one bottom is through connecting block fixedly connected with stopper two, stopper two sets up inside a bull stick, frame one and frame two are kept away from and have been seted up spacing groove one on the one end lateral wall of mounting bracket, spacing groove one and stopper adaptation, dwang two are close to end position fixedly connected with fixed cover, spacing groove two has been seted up on the fixed cover, spacing groove two and stopper two adaptations, two top fixedly connected with shifting blocks of stopper, the shifting block slides and sets up in the bull stick outside.

Preferably, the second limiting groove and the magnet are in the same straight line.

Preferably, a second notch is formed in the side edge of one end, close to the rotating handle, of the rotating rod I, a first notch is formed in the side edge of the rotating handle, the first notch, the second limiting groove and the magnet are located on the same straight line, and the second notch and the inserting block are located on the same straight line.

Preferably, frame one and frame two are kept away from the mounting bracket one end outside and are fixedly connected with mounting part one respectively, the inside fixed mounting of mounting bracket has mounting part three, frame three and the adjacent tip demountable installation of frame four have mounting part three, the mounting includes the holding ring, two bracing pieces of holding ring side fixedly connected with, two contained angle between the bracing piece is 90 degrees, two the bracing piece is pegged graft respectively in the draw-in groove of seting up on frame three and the adjacent tip of frame four, be provided with the screw hole in the middle of mounting part one, mounting part two and the holding ring respectively, and threaded mounting has the threaded rod in the screw hole.

Preferably, the outer sides of the ends of the third frame and the fourth frame, which are connected with the first frame and the second frame, are respectively and fixedly connected with a baffle.

Preferably, a plurality of groups of through holes are uniformly formed in the middle partition plates of the first frame and the second frame, the through holes correspond to the rope sleeves one to one, and the diameter of the lantern ring is larger than that of the through holes.

(III) advantageous effects

The invention provides a coverage measuring device applied to the field of shrubs, which has the following beneficial effects:

the frame I, the frame II, the frame III and the frame IV can be conveniently folded together by arranging the foldable structure, occupied space is reduced, storage and transportation are convenient, the pull ropes can be conveniently and rapidly rolled together by arranging the rolling assembly, the pull ropes are prevented from being wound together in a messy mode, when the frame I, the frame II, the frame III and the frame IV are unfolded to form a rectangular frame, and then the pull ropes are pulled out and installed, so that the coverage degree can be measured, and the frame I, the frame II, the frame III and the frame IV are convenient to use and carry.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic view of another angle structure of the present invention;

FIG. 3 is a partial schematic view of the present invention;

FIG. 4 is a partial cross-sectional view of the present invention;

FIG. 5 is a cross-sectional view of a cord sleeve of the present invention;

FIG. 6 is an enlarged view of the structure of the region A according to the present invention.

In the figure: 1. a mounting frame; 2. a first frame; 3. a second frame; 4. a third frame; 5. a fourth frame; 6. pulling a rope; 7. a first fixing part; 8. a second fixing part; 801. a positioning ring; 802. a support bar; 9. positioning a rod; 10. a winding component; 1001. a first rotating rod; 1002. rope sleeves; 1003. a second rotating rod; 1004. turning a handle; 1005. a through hole; 1006. a slot; 1007. a through groove; 1008. inserting a block; 1009. a support plate; 1010. a spring; 1011. a magnet; 11. a limiting component; 1101. a chute; 1102. a first limiting groove; 1103. a first limiting block; 1104. shifting blocks; 1105. a second limiting block; 1106. fixing a sleeve; 1107. a second limiting groove; 12. a third fixing part; 13. a collar; 14. a movable cavity; 15. a bolt; 16. hooking; 17. moving the plate; 18. a baffle plate; 19. a first gap is formed; 20. and a second notch.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

As shown in fig. 1 to 6, the present invention provides a technical solution: a coverage measuring device applied to the field of bush irrigation comprises a mounting frame 1, wherein a first frame 2 and a second frame 3 are respectively rotatably mounted on two adjacent side edges of the mounting frame 1, the first frame 2 and the second frame 3 are identical in structure, the cross sections of the first frame 2 and the second frame 3 are I-shaped, rolling assemblies 10 are respectively rotatably mounted on the outer sides of the first frame 2 and the second frame 3, a third frame 4 is movably mounted on the inner side of the first frame 2, a third frame 4 is movably mounted on the inner side of the second frame 3, the end portions of the second frame 3 and the third frame 4 are respectively rotatably mounted at one ends, far away from the mounting frame 1, of the first frame 2, the second frame 3, the third frame 4 and the fourth frame 5 can be unfolded to form a rectangular frame, each rolling assembly 10 comprises a first rotating rod 1001 rotatably mounted on the outer sides of the first frame 2 and the second frame 3, a plurality of rope sleeves 1002 are uniformly arranged on the first rotating rod 1001, and the rope sleeves 1002 are rotatably connected with the first rotating rod 1001, the rope sleeve 1002 is rolled with a pull rope 6, one end of the pull rope 6, which is far away from the rope sleeve 1002, is fixedly connected with a lantern ring 13, the inner wall of the rope sleeve 1002 is uniformly provided with a plurality of groups of slots 1006, the top of a rotating rod 1001 is provided with a through slot 1007 corresponding to the slots 1006, the through slot 1007 is movably provided with an insert block 1008, the bottom of the insert block 1008 is fixedly connected with a support plate 1009, two sides of the upper end of the support plate 1009 are respectively and fixedly connected with a spring 1010, the top of the spring 1010 is fixedly connected with the inner wall of the rotating rod 1001, the spring 1010 is in an extension state initially, so that the top end of the insert block 1009 is positioned inside the through slot 1007, the insert block 1009 is not inserted with the slot 1007, the rotating rod 1001 is internally and rotatably provided with a rotating rod II, the outer side of the rotating rod II 1003 is fixedly provided with a magnet 1011 corresponding to the support plate 1009, the bottom of the support plate 1009 is fixedly provided with a corresponding magnet 1003 which can repel with the magnet 1011, one end 1003 of the rotating rod II 1003 extends to the outer side of the rotating rod 1001, and the end of the rotating rod II 1003 is fixedly connected with a rotating handle 1004, the inner sides of the third frame 4 and the fourth frame 5 are provided with movable cavities 14, movable plates 17 are slidably mounted in the movable cavities 14, a plurality of groups of hooks 16 are fixedly connected to the inner sides of the movable plates 17, the hooks 16 correspond to the lantern rings 13 one by one, bolts 15 are in threaded connection with the outer side walls of the third frame 4 and the fourth frame 5, the end portions of the bolts 15 extend into the movable cavities 14 and are rotatably connected with the movable plates 17, in an initial state, the whole device is formed by folding and folding the first frame 2 and the second frame 3 together, the third frame 4 and the fourth frame 5 are folded and folded on the inner sides of the first frame 2 and the second frame 3, the pull ropes 6 are wound on the rope sleeve 1002, so that occupied space is small, transportation and storage are convenient, when the brush cover degree of a certain ground surface is required to be measured, the device is taken out firstly, then the first frame 2 and the second frame 3 are opened to 90 degrees towards two sides, and then the third frame 4 and the fourth frame 5 are rotated out from the inner sides of the first frame 2 and the second frame 3, the two adjacent ends of the frame III 4 and the frame IV 5 are connected together through the fixing piece II 8, so that the frame I2, the frame II 3, the frame III 4 and the frame IV 5 form a rectangular frame, then the lantern rings 13 on the inner sides of the frame I2 and the frame II 3 are pulled in sequence, the pull rope 6 is pulled out from the through hole 1005 through the lantern rings 13, at the moment, the rope sleeve 1002 rotates on the rotating rod I1001, the lantern rings 13 stretch the pull rope 6 until the lantern rings 13 can move to the positions of the hooks 16 on the inner sides of the frame IV 5 and the frame III 4 on the opposite sides, the hooks 16 are initially retracted into the movable cavity 14, so that the hooks 16 are prevented from being damaged, when the hook is used, the hooks 16 are pushed out from the movable cavity 14 through the screwing-in bolts 15, then the lantern rings 13 are hung on the hooks 16, the positions of the through holes 1005 are opposite to the positions of the hooks 16, so that the pulled pull ropes 6 are perpendicular to form a rectangular grid of 0.1m multiplied by 0.1m, the convenience is measured the coverage, when the lantern ring 13 is hung on couple 16, through screwing out bolt 15, thereby can be so that stay cord 6 is in comparatively taut state, it is more accurate to make the measuring result like this, when stay cord 6 is withdrawed to needs, then can rotate two 1003 of bull stick, two 1003 of bull stick drive magnet 1011 rotate to the backup pad 1009 under, through mutual repulsion between magnet 1011, promote backup pad 1009 rebound, make the inserted block 1008 can shift up and insert in the slot 1006 of the 1002 inner wall of fag end, rotate bull stick one 1001 and two 1003 like this simultaneously, can drive all nooses 1002 simultaneously and rotate, thereby can be quick on the noose 1002 with the winding of stay cord 6.

Furthermore, a limiting component 11 is arranged at one end of the first rotating rod 1001 close to the rotating handle 1004, the limiting component 11 comprises an upper sliding groove 1101 formed in the side wall of the first rotating rod 1001, the sliding groove 1101 penetrates through the side wall of the first rotating rod 1001, a first limiting block 1103 is slidably mounted in the sliding groove 1101, the bottom of the first limiting block 1103 is fixedly connected with a second limiting block 1105 through a connecting block, the second limiting block 1105 is arranged inside the first rotating rod 1001, a first limiting groove 1102 is formed in the side wall of one end of the first outer frame and the second outer frame far away from the mounting frame 1, the first limiting groove 1102 is matched with the first limiting block 1103, a fixed sleeve 1106 is fixedly connected to the position of the second rotating rod close to the end, a second limiting groove 1107 is formed in the fixed sleeve 1106, the second limiting groove 1107 is matched with the second limiting block 1105, a shifting block 1104 is fixedly connected to the top of the second limiting block 1105, the shifting block 1104 is slidably arranged outside the first rotating rod 1001, and the first limiting block 1103 is clamped in the first limiting groove 1102 in the process of pulling out the pull rope 6, therefore, the first rotating rod 1001, the first frame 2 and the second frame 3 are clamped together, at the moment, the first rotating rod 1001 cannot rotate, the rope sleeve 1002 can rotate through the first rotating rod 1001 respectively, the pull rope 6 can be pulled out in sequence, when the pull rope 6 is required to be withdrawn, the first limiting block 1103 slides outwards along the annular groove 1101 to enable the first limiting block 1103 to be just separated from the first limiting groove 1102, then the second rotating rod 1003 is rotated to enable the magnet 1011 to rotate to be right below the supporting plate, at the moment, the first limiting block 1103 can continuously move outwards, in the moving process of the first limiting block 1103, the second limiting block 1105 inside the first rotating rod 1001 is just clamped into the second limiting groove 1107, so that the first rotating rod 1001 is connected with the second rotating rod 1003, the magnet 1011 can be kept right below the supporting plate 1009 all the time, the insertion block 1008 is prevented from being separated from the insertion groove 1006, the first rotating rod 1001 and the second rotating rod 1003 are convenient, and simultaneously, the rope sleeve 1002 is synchronously driven to rotate together, thus, the pull rope 6 can be stably wound on the rope sleeve 1002.

Furthermore, the second limiting groove 1107 is in the same straight line with the magnet 1011, so that when the magnet 1011 is located under the support plate 1009, the second limiting groove 1107 rotates to be in the same straight line with the second limiting block 1105 at the same time, which facilitates the insertion of the second limiting block 1105 into the second limiting groove 1107.

Furthermore, a second notch 20 is formed in the side edge of the first rotating rod 1001, which is close to the rotating handle 1004, and a first notch 19 is formed in the side edge of the rotating handle 1004, the first notch 19, the second limiting groove 1107 and the magnet 1011 are located on the same straight line, and the second notch 20 and the insertion block 1008 are located on the same straight line, so that when the first notch 19 and the second notch 20 are aligned, the magnet 1011 and the support plate 1009 are located on the same plane, and the magnet 1011 is conveniently rotated to the position under the support plate 1009.

Further, the outer sides of the ends, far away from the mounting rack 1, of the frame I2 and the frame II 3 are respectively and fixedly connected with a fixing piece I7, the inside of the mounting rack 1 is fixedly provided with a fixing piece III 12, the adjacent end portions of the frame III 4 and the frame IV 5 are detachably provided with a fixing piece III 12, the fixing piece II 8 comprises a positioning ring 801, the side edge of the positioning ring 801 is fixedly connected with two supporting rods 802, an included angle between the two supporting rods 802 is 90 degrees, the two supporting rods 802 are respectively inserted into clamping grooves formed in the adjacent end portions of the frame III 4 and the frame IV 5, threaded holes are respectively formed in the middle of the fixing piece I7, the fixing piece II 8 and the positioning ring 801, positioning rods 9 are arranged in the threaded holes, when the frame III 4 and the frame IV 5 are unfolded, the adjacent end portions of the frame III 4 and the frame IV 5 are connected together through the fixing piece II 8, and then the positioning rods 9 are respectively inserted into the fixing piece I7, The positioning ring 801 and the fixing piece III 12 are arranged in the middle, so that the device can be inserted on the ground, and the measuring process is more stable.

Further, frame three 4, frame four 5 and frame one 2, the one end outside that frame two 3 links to each other is fixedly connected with baffle 18 respectively, when frame three 4, frame four 5 are opened to 90 degrees, through the side of baffle 18 butt at frame one 2, frame two 3 to block frame three 4, frame four 5 and continue to rotate, conveniently expand frame one 2, frame two 3, frame three 4, frame four 5 like this and form the frame form of lifting, make things convenient for stay cord 6 to install.

Furthermore, a plurality of groups of through holes 1005 are uniformly formed in the middle partition plates of the first frame 2 and the second frame 3, the through holes 1005 correspond to the rope sleeve 1002 one by one, the diameter of the lantern ring 13 is larger than that of the through holes 1005, the lantern ring 13 can conveniently penetrate through the through holes 1005, and the lantern ring 13 can be conveniently pulled.

In conclusion, the working process of the invention is as follows: when the device is used, in an initial state, the whole device is formed by folding and folding the first frame 2 and the second frame 3 together, the third frame 4 and the fourth frame 5 are folded and folded on the inner sides of the first frame 2 and the second frame 3, the pull rope 6 is coiled on the rope sleeve 1002, so that the occupied space is small, the transportation and the storage are convenient, when the brush covering degree of a certain ground surface is required to be measured, the device is taken out firstly, then the first frame 2 and the second frame 3 are opened to two sides to 90 degrees, then the third frame 4 and the fourth frame 5 are rotated and pulled out from the inner sides of the first frame 2 and the second frame 3, the two adjacent ends of the third frame 4 and the fourth frame 5 are connected together through the second fixing piece 8, so that the first frame 2, the second frame 3, the third frame 4 and the fourth frame 5 form a rectangular frame, then the lantern rings 13 on the inner sides of the first frame 2 and the second frame 3 are pulled out in sequence, the pull rope 6 is pulled out from the through holes 1005 through the lantern rings 13, at the moment, the rope sleeve 1002 rotates on the first rotating rod 1001, the pull rope 6 is stretched by the lantern ring 13 until the lantern ring 13 can move to the position of the hook 16 on the inner sides of the frame four 5 and the frame three 4 on the opposite side, the hook 16 is retracted into the movable cavity 14 initially, so that the hook 16 can be prevented from being damaged, when the multifunctional measuring device is used, the hook 16 is pushed out from the movable cavity 14 by screwing in the bolt 15, then the lantern ring 13 is hung on the hook 16, the position of the through hole 1005 is opposite to the position of the opposite hook 16, so that the pull rope 6 pulled out is perpendicular to each other, a rectangular grid of 0.1m multiplied by 0.1m is formed, the coverage degree is conveniently measured, when the lantern ring 13 is hung on the hook 16, the pull rope 6 can be in a tighter state by screwing out the bolt 15, so that the measuring result is more accurate, when the pull rope 6 needs to be retracted, the second rotating rod 1003 can rotate, the second rotating rod 1003 drives the magnet 1011 to rotate to be right below the supporting plate 1009, through mutual repulsion between magnet 1011, promote backup pad 1009 upward movement for in the plug 1008 can shift up and insert the slot 1006 of fag end 1002 inner wall, rotate bull stick 1001 and bull stick 1003 simultaneously like this, can drive all fag ends 1002 simultaneously and rotate, thereby can be quick with on the fag end 1002 of stay cord 6 rolling.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a be applied to coverability measuring device in bush field which characterized in that: including mounting bracket (1), rotate respectively on the adjacent both sides side edge of mounting bracket (1) and install frame one (2) and frame two (3), frame one (2) and frame two (3) structure are the same, the cross-section of frame one (2) and frame two (3) is the I shape, the outside of frame one (2) and frame two (3) rotates respectively and is provided with rolling component (10), frame one (2) inboard movable mounting has frame three (4), frame two (3) inboard movable mounting has frame three (4), the tip of frame two (3) and frame three (4) rotates respectively and installs the one end of keeping away from mounting bracket (1) in frame one (2) and frame two (3), frame one (2), frame two (3), frame three (4) and frame four (5) can expand formation rectangle frame, rolling component (10) are including rotating the bull stick one (3) of installing in the frame one (2) and frame two (3) outside 1001) The utility model discloses a rope sleeve, even be provided with multiunit noose (1002) on bull stick (1001), noose (1002) rotate with bull stick (1001) and are connected, noose (1002) are rolled up and are equipped with stay cord (6), fixedly connected with lantern ring (13) is gone up to stay cord (6) one end of keeping away from noose (1002), even multiunit slot (1006) have been seted up on noose (1002) inner wall, logical groove (1007) have been seted up with slot (1006) corresponding position in bull stick (1001) top, movable mounting has inserted block (1008) in logical groove (1007), inserted block (1008) bottom fixedly connected with backup pad (1009), backup pad (1009) upper end both sides fixedly connected with spring (1010) respectively, spring (1010) top and bull stick (1001) inner wall fixed connection, bull stick (1001) internal rotation installs bull stick two (1003), bull stick two (1003) have magnet (1011) in the bull stick (1003) outside and backup pad (1009) corresponding position fixed mounting, backup pad (1009) bottom fixed mounting have can with magnet (1011) repellent's corresponding magnet, bull stick two (1003) one end extends to bull stick one (1001) outside, and fixedly connected with changes (1004) on bull stick two (1003) the tip, movable chamber (14) have been seted up to frame three (4) and frame four (5) inboards, slidable mounting has movable plate (17) in movable chamber (14), the equal fixedly connected with multiunit couple (16) of movable plate (17) inboard, couple (16) and lantern ring (13) one-to-one, threaded connection has bolt (15) on frame three (4) and the four (5) lateral walls of frame, bolt (15) tip extends to movable chamber (14) inside, and rotates with movable plate (17) and is connected.

2. The device for measuring the coverage of a shrub field according to claim 1, wherein: one end of the first rotating rod (1001) close to the rotating handle (1004) is provided with a limiting component (11), the limiting component (11) comprises a sliding groove (1101) formed in the side wall of the first rotating rod (1001), the sliding groove (1101) penetrates through the side wall of the first rotating rod (1001), a first limiting block (1103) is arranged in the sliding groove (1101), the bottom of the first limiting block (1103) is fixedly connected with a second limiting block (1105) through a connecting block, the second limiting block (1105) is arranged inside the first rotating rod (1001), a first limiting groove (1102) is formed in the side wall of one end of the first outer frame and the side wall of one end of the second outer frame far away from the mounting rack (1), the first limiting groove (1102) is matched with the first limiting block (1103), the second rotating rod is close to the end position and is fixedly connected with a fixing sleeve (1106), a second limiting groove (1107) is formed in the fixing sleeve (1106), and the second limiting groove (1107) is matched with the second limiting block (1105), the top of the second limiting block (1105) is fixedly connected with a shifting block (1104), and the shifting block (1104) is arranged on the outer side of the first rotating rod (1001) in a sliding mode.

3. The device for measuring the coverage of a shrub field according to claim 2, wherein: the second limiting groove (1107) and the magnet (1011) are positioned on the same straight line.

4. The device for measuring the coverage of a shrub field according to claim 1, wherein: a second notch (20) is formed in the side edge of one end, close to the rotating handle (1004), of the first rotating rod (1001), a first notch (19) is formed in the side edge of the rotating handle (1004), the first notch (19), the second limiting groove (1107) and the magnet (1011) are located on the same straight line, and the second notch (20) and the inserting block (1008) are located on the same straight line.

5. The device for measuring the coverage of a shrub field according to claim 1, wherein: frame one (2) and frame two (3) keep away from mounting bracket (1) one end outside respectively fixedly connected with mounting bracket one (7), the inside fixed mounting of mounting bracket (1) has three (12) of mounting bracket, three (4) of frame and the adjacent tip demountable installation of frame four (5) have three (12) of mounting bracket, the mounting includes holding ring (801), two bracing pieces (802) of holding ring (801) side fixedly connected with, two contained angle between bracing piece (802) is 90 degrees, two bracing piece (802) are pegged graft respectively in the draw-in groove of seting up on three (4) of frame and four (5) of frame adjacent tip, be provided with the screw hole in the middle of mounting one (7), two (8) of mounting bracket and holding ring (801) respectively, and screw thread installs locating lever (9) in the screw hole.

6. The device for measuring the coverage of a shrub field according to claim 1, wherein: and the outer sides of the ends, connected with the first frame (2) and the second frame (3), of the third frame (4) and the fourth frame (5) are fixedly connected with a baffle (18) respectively.

7. The device for measuring the coverage of a shrub field according to claim 1, wherein: the middle partition plates of the first frame (2) and the second frame (3) are uniformly provided with a plurality of groups of through holes (1005), the through holes (1005) correspond to the rope sleeves (1002) one by one, and the diameter of the lantern ring (13) is larger than that of the through holes (1005).