CN115854821B

CN115854821B - Forestry measuring device

Info

Publication number: CN115854821B
Application number: CN202310157662.9A
Authority: CN
Inventors: 蔚瑞华; 董梅英; 周鹤; 朱冰; 刘雪荣; 赵磊; 段华
Original assignee: Dongping County Forestry Protection And Development Center
Current assignee: Dongping County Forestry Protection And Development Center
Priority date: 2023-02-23
Filing date: 2023-02-23
Publication date: 2023-05-16
Anticipated expiration: 2043-02-23
Also published as: CN115854821A

Abstract

The invention discloses a forestry measuring device, which relates to the field of measuring devices and comprises: the left measuring belt and the right measuring belt are respectively fixedly arranged at the left end and the right end of the belt, the left measuring belt is fixedly connected with the left end of the elastic belt, and the right end of the elastic belt is detachably connected with the right measuring belt; the belt head is fixedly connected with the right measuring belt; the marking mechanism is arranged at the top of the belt head and is used for marking marks on the left measuring belt at regular intervals; the two guide sleeves are sleeved on the left measuring belt and fixedly connected with the belt head. The tree growth speed measuring device can mark different positions of the left measuring belt along with the movement of the left measuring belt driven by the trunk growth, and the tree growth speed is higher, the distance between adjacent marks is larger, the tree growth speed is lower, the distance between adjacent marks is smaller, and the growth speed of the tree in different periods can be judged through the distance between the adjacent marks.

Description

Forestry measuring device

Technical Field

The invention relates to the field of measuring devices, in particular to a forestry measuring device.

Background

When monitoring the growth condition of trees in forests, the traditional monitoring method is to regularly measure the circumference of the trunk of the trees in the forests, the growth speed condition of the trees in each period is judged by comparing the circumference of the trunk measured in each period, the measuring tool commonly used at present is a tape or a measuring device based on the tape, for example, patent publication No. CN114608411B discloses a forestry measuring device, and specifically discloses a forestry measuring device, which relates to the technical field of forestry measurement and comprises a fixed ring, the bottom of the fixed ring is provided with a fixed mechanism, an annular groove is formed in the annular inner wall of the fixed ring, a tape is arranged on the inner wall of a tape box, an auxiliary mechanism is arranged on one side of the sleeve, an extending mechanism is arranged on the inner wall of the sleeve, a placing groove is formed in the top of the chassis, and a storage battery is arranged on the inner wall of the placing groove. According to the invention, one end of the handle is locked into the threaded sleeve through threads, at the moment, the handle can control the chassis to rotate along the annular groove arranged on the inner wall of the fixed ring through the sliding block, and the chassis can generate inclination of the pitch angle through the second rotating shaft, so that when the height of an inclined slope is measured, the device is not required to be leveled, the time is saved, the measurement efficiency is improved, the sleeve can be conveniently controlled to be approximately parallel to the telescopic column through the handle, and the obtained height data is more accurate and reliable.

However, when such a measuring device is used for measuring, a worker needs to go to the forest to manually measure at regular intervals, and a plurality of trees are often required to be selected for monitoring the circumference of the trunk in the forest, so that the measuring workload is huge, and if a device for automatically monitoring the circumference change of the trunk at regular intervals can be designed, the labor intensity of the worker can be greatly reduced.

Disclosure of Invention

The invention aims to provide a forestry measuring device for solving the technical problems.

The invention aims to solve the technical problems, and is realized by adopting the following technical scheme:

a forestry measurement device, comprising: the left measuring belt and the right measuring belt are respectively fixedly arranged at the left end and the right end of the belt, the left measuring belt is fixedly connected with the left end of the elastic belt, and the right end of the elastic belt is detachably connected with the right measuring belt; the belt head is fixedly connected with the right measuring belt; a marking mechanism mounted on top of the belt head for marking marks on the left measuring belt on a regular basis.

Preferably, the method further comprises: the two guide sleeves are sleeved on the left measuring belt and fixedly connected with the belt head.

Preferably, the marking mechanism includes: the water tank is arranged in the belt head; the elastic water bag is arranged in the water tank; the base is fixedly arranged at the top of the belt head, a first through hole is formed in the base in a penetrating mode, a water pipe is fixedly arranged at the top of the belt head, the upper end of the water pipe is communicated with the first through hole, and the lower end of the water pipe is fixedly connected and communicated with the elastic water bag; the water flow control assembly is arranged in the first through hole; the lower end of the water drum is fixedly connected with the base; the torsion spring is sleeved on the water drum, and the lower end of the torsion spring is connected with the base; the first gear is sleeved on the water drum; one end of the driving tube is fixedly connected with the first gear, the other end of the driving tube is connected with the marking assembly, and the upper end of the torsion spring is connected with the driving tube; the lower end of the L-shaped connecting pipe penetrates through the first gear to be fixedly connected and communicated with the driving pipe, and the upper end of the L-shaped connecting pipe is fixedly connected and communicated with the second water pipe; the hollow oval float is positioned in the water drum, and the top of the float is fixedly connected and communicated with the lower end of the second water pipe; the second gear is meshed with the first gear, the second gear is rotationally connected to the top of the rotating shaft, and the bottom end of the rotating shaft is fixedly connected with the top of the belt head; the tooth grooves are formed in one side, close to the belt head, of the left measuring belt along the length direction of the left measuring belt; the annular air bag is fixedly sleeved on the float, a plurality of air holes are formed in the top and the bottom of the annular air bag, a plurality of short pipes are arranged in the annular air bag, and the short pipes are fixedly connected and communicated with the float.

Preferably, the marking mechanism further includes: the rain-proof cover is located above the water drum, and is fixedly connected and communicated with the top of the second water pipe.

Preferably, the water flow control assembly comprises: the baffle plates are symmetrically arranged in the first through hole, and the bottoms of one sides, away from each other, of the two baffle plates are connected with the inner wall of the first through hole through hinges; the triangular prism-shaped second baffle plates are fixedly arranged on one sides of the two baffle plates, which are close to each other; the middle parts of one sides of the two second baffles, which are close to each other, are provided with water seepage holes; the support plate, the symmetry is provided with two backup pads in the first through-hole, backup pad and first through-hole inner wall rigid coupling, the backup pad passes through the spring and is connected with the baffle.

Preferably, the marking assembly includes: the sliding cylinder is fixedly connected and communicated with the bottom of the connecting water pipe, and the top of the connecting water pipe is fixedly connected and communicated with the driving pipe;

the sliding rod is connected in the sliding cylinder in a sliding way, a plurality of second springs are arranged in the sliding cylinder, one ends of the second springs are fixedly connected with the sliding rod, the other ends of the second springs are fixedly connected with the inner wall of the sliding cylinder, and sliding grooves are formed in the sliding rod along the axial direction of the sliding rod.

Preferably, the marking assembly further comprises: the fixed rod is fixedly arranged on one side of the inside of the chute, a conical first spike is fixedly arranged at the end part of the fixed rod, and the first spike extends out of the chute; the marking structure is arranged on the other side of the inside of the sliding groove in a sliding way along the axial direction of the sliding rod; the limiting grooves are symmetrically formed in one end, close to the first spike, of the inner wall of the sliding groove; the limiting plate is connected with the limiting groove in a sliding mode; the third spring is positioned in the limiting groove, one end of the third spring is fixedly connected with the limiting plate, and the other end of the third spring is fixedly connected with the inner wall of the limiting groove.

Preferably, the marking structure includes: the second taper-shaped spike is fixedly provided with a plurality of barbs at one side; and the short rod is fixedly connected with the second spike.

Preferably, the marking structure further comprises: the fourth spring is positioned in the chute, the upper end of the fourth spring is fixedly connected with the short rod positioned at the lowest part, and the lower end of the fourth spring is fixedly connected with the inner wall of the chute.

The beneficial effects of the invention are as follows:

1. according to the invention, the belt is sleeved on the trunk, the circumference of the trunk is increased along with the growth of trees, the driving pipe can be driven to rotate for accumulating force, water is slowly supplied into the water drum through the elastic water bag, after a certain amount of water in the water drum is accumulated, the driving pipe after accumulating force can be enabled to rotate to strike the left measuring belt, so that marks are left on the left measuring belt, meanwhile, the water in the water drum can be driven to return to the elastic water bag, after that, the elastic water bag continues to slowly supply water into the water drum, the circumference of the trunk is continuously increased to drive the driving pipe to rotate for accumulating force, after a period of time, the driving pipe rotates again to strike the left measuring belt, therefore, the driving pipe can regularly strike the left measuring belt, and the left measuring belt is driven to move along with the growth of the trunk, marks can be marked at different positions of the left measuring belt, the faster the tree growth speed is, the distance between adjacent marks is the slower, the distance between the adjacent marks is the smaller, and the tree growth speed can be judged by the distance between the adjacent marks.

2. When the driving tube hits the left measuring belt, the second spike with the barb pierces the left measuring belt, and when the driving tube is far away from the left measuring belt, the second spike can be separated from the sliding groove and left on the left measuring belt due to the existence of the barb to be used as a mark of the driving tube for hitting the left measuring belt.

Drawings

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

FIG. 2 is an enlarged schematic view of portion A of FIG. 1 in accordance with the present invention;

FIG. 3 is an enlarged schematic view of portion B of FIG. 1 in accordance with the present invention;

FIG. 4 is an enlarged schematic view of portion B1 of FIG. 3 in accordance with the present invention;

FIG. 5 is an enlarged schematic view of portion B2 of FIG. 3 in accordance with the present invention;

FIG. 6 is an enlarged schematic view of portion B3 of FIG. 3 in accordance with the present invention;

FIG. 7 is a schematic diagram of a front view of a marking mechanism according to the present invention;

FIG. 8 is an enlarged schematic view of portion C of FIG. 7 in accordance with the present invention;

FIG. 9 is an enlarged schematic view of portion D of FIG. 7 in accordance with the present invention;

FIG. 10 is an enlarged schematic view of portion D1 of FIG. 9 in accordance with the present invention;

FIG. 11 is a top view of the second baffle plate and baffle plate attachment structure of FIG. 10 according to the present invention;

reference numerals: 1. a belt head; 2. a driving tube; 3. a guide sleeve; 4. a left measuring belt; 5. tooth slots; 6. a rotating shaft; 7. a second gear; 8. a first gear; 9. a limiting plate; 10. a water drum; 12. a second spring; 13. a slide cylinder; 14. a fixed rod; 15. a chute; 16. a slide bar; 17. connecting a water pipe; 18. a third spring; 19. a limit groove; 20. a short bar; 21. a second spike; 22. a barb; 23. a first spike; 24. a fourth spring; 25. an elastic water bag; 26. an L-shaped connecting pipe; 27. a second water pipe; 28. a fishing float; 29. a water tank; 30. air holes; 31. an annular air bag; 32. a short pipe; 33. a torsion spring; 34. a base; 35. a first through hole; 36. a water pipe; 37. a second baffle; 38. a baffle; 39. a hinge; 40. a spring; 41. a support plate; 42. water seepage holes; 43. an elastic band; 44. a rain cover; 45. right measuring band.

Detailed Description

In order that the manner in which the above recited features, objects and advantages of the present invention are obtained, a more particular description of the invention will be rendered by reference to specific embodiments thereof which are illustrated in the appended drawings. Based on the examples in the embodiments, those skilled in the art can obtain other examples without making any inventive effort, which fall within the scope of the invention.

Specific embodiments of the present invention are described below with reference to the accompanying drawings.

Example 1

As shown in fig. 1-11, a forestry measurement device includes: the left measuring belt 4 and the right measuring belt 45 are respectively fixedly arranged at the left end and the right end of the belt, the left measuring belt 4 is fixedly connected with the left end of the elastic belt 43, and the right end of the elastic belt 43 is detachably connected with the right measuring belt 45; the belt head 1, the belt head 1 is fixedly connected with the right measuring belt 45; a marking mechanism mounted on top of the belt head 1 for marking marks on the left measuring belt 4 at regular intervals; the two guide sleeves 3 are sleeved on the left measuring belt 4, and the guide sleeves 3 are fixedly connected with the belt head 1.

The marking mechanism includes: a water tank 29, wherein the water tank 29 is arranged in the belt head 1; the elastic water bag 25, the elastic water bag 25 is arranged in the water tank 29, and the elastic water bag 25 is filled with water, so that the elastic water bag 25 is inflated; the base 34 is fixedly arranged at the top of the belt head 1, a first through hole 35 is formed in the base 34 in a penetrating manner, a water pipe 36 is fixedly arranged at the top of the belt head 1, the upper end of the water pipe 36 is communicated with the first through hole 35, and the lower end of the water pipe 36 is fixedly connected and communicated with the elastic water bag 25; a water flow control assembly mounted in the first through hole 35; the lower end of the water drum 10 is fixedly connected with the base 34; the torsion spring 33 is sleeved on the water drum 10, and the lower end of the torsion spring 33 is connected with the base 34; the first gear 8 is sleeved on the water drum 10; one end of the driving tube 2 is fixedly connected with the first gear 8, the other end of the driving tube 2 is connected with the marking component, and the upper end of the torsion spring 33 is connected with the driving tube 2; the lower end of the L-shaped connecting pipe 26 penetrates through the first gear 8 to be fixedly connected and communicated with the driving pipe 2, and the upper end of the L-shaped connecting pipe 26 is fixedly connected and communicated with the second water pipe 27; an elliptic hollow float 28, wherein the float 28 is positioned in the water drum 10, and the top of the float 28 is fixedly connected and communicated with the lower end of the second water pipe 27; the second gear 7 is meshed with the first gear 8, the second gear 7 is rotationally connected to the top of the rotating shaft 6, and the bottom end of the rotating shaft 6 is fixedly connected with the top of the belt head 1; the tooth grooves 5 are formed in one side, close to the belt head 1, of the left measuring belt 4, and a plurality of tooth grooves 5 are formed in the length direction of the left measuring belt 4; the annular air bag 31 is fixedly sleeved on the float 28, a plurality of air holes 30 are formed in the top and the bottom of the annular air bag 31, a plurality of short pipes 32 are arranged in the annular air bag 31, and the short pipes 32 are fixedly connected and communicated with the float 28; the rain shield 44, the rain shield 44 is located above the water drum 10, and the rain shield 44 is fixedly connected and communicated with the top of the second water pipe 27.

The water flow control assembly includes: the baffle plates 38, the first through hole 35 is internally symmetrically provided with two baffle plates 38, and the bottoms of the sides of the two baffle plates 38, which are far away from each other, are connected with the inner wall of the first through hole 35 through hinges 39; a triangular prism-shaped second baffle 37, wherein the second baffle 37 is fixedly arranged on one side of the two baffles 38, which are close to each other; the middle parts of one side, close to each other, of the two second baffles 37 are provided with water seepage holes 42; the support plate 41 is symmetrically arranged in the first through hole 35, the support plate 41 is fixedly connected with the inner wall of the first through hole 35, and the support plate 41 is connected with the baffle 38 through the spring 40.

The marking assembly includes: the sliding cylinder 13, the sliding cylinder 13 is fixedly connected and communicated with the bottom of the connecting water pipe 17, and the top of the connecting water pipe 17 is fixedly connected and communicated with the driving pipe 2; the sliding rod 16 is in sliding connection in the sliding barrel 13, a plurality of second springs 12 are arranged in the sliding barrel 13, one end of each second spring 12 is fixedly connected with the sliding rod 16, the other end of each second spring 12 is fixedly connected with the inner wall of the sliding barrel 13, and a sliding groove 15 is formed in the sliding rod 16 along the axial direction of the sliding rod 16.

Working principle: the belt is enclosed on the trunk, the left measuring belt 4 is inserted into the guide sleeve 3, the elastic belt 43 is connected with the right measuring belt 45, the second gear 7 is clamped in the tooth groove 5 on the left measuring belt 4, the circumference of the trunk continuously increases along with the growth of the tree, the left measuring belt 4 is driven to move left continuously, the left measuring belt 4 drives the second gear 7 to rotate clockwise through the tooth groove 5, the second gear 7 drives the first gear 8 to rotate anticlockwise, the first gear 8 drives the driving tube 2 to rotate anticlockwise, the driving tube 2 drives the torsion spring 33 to twist and store force, meanwhile, the elastic water bag 25 is filled with water to expand, the water in the elastic water bag 25 slowly flows into the water cylinder 10 through the water seepage hole 42 under the pressure, the fishing float 28 is driven to rise under the buoyancy effect along with the increase of the water quantity in the water cylinder 10, the fishing float 28 drives the first gear 8 to rise synchronously through the second water pipe 27 and the L-shaped connecting tube 26, the first gear 8 is separated from the second gear 7, at this time, under the action of the torsion spring 33, the first gear 8 drives the driving tube 2 to synchronously rotate clockwise, so that the slide bar 16 on the driving tube 2 hits the left measuring belt 4 to leave marks on the left measuring belt 4, the slide bar 16 is inserted into the slide cylinder 13 to compress the air in the slide cylinder 13 during the hit, the air is pushed into the annular air bag 31 through the connecting water pipe 17, the driving tube 2, the L-shaped connecting pipe 26, the second water pipe 27, the float 28 and the short pipe 32, the annular air bag 31 is expanded to be contacted with the inner wall of the water cylinder 10, a closed space is formed between the annular air bag 31 and the base 34 in the water cylinder 10, the air in the annular air bag 31 flows into the closed space through the air hole 30 to increase the air pressure of the closed space, the water in the water cylinder 10 pushes the baffle 38 to rotate the baffle 38 along the hinge 39 under the air pressure, the two second baffles 37 are mutually separated, after the air in the annular air bag 31 is released, the annular air bag 31 is contracted to restore to a normal state, at the moment, the float 28 and the first gear 8 fall under the action of gravity, so that the first gear 8 can be in contact engagement with the second gear 7 again, after that, the elastic water bag 25 continuously supplies water slowly into the water barrel 10, the circumference of the trunk continuously increases to drive the driving pipe 2 to rotate and accumulate force, after a period of time, the sliding rod 16 on the driving pipe 2 rotates again to strike the left measuring belt 4, therefore, the sliding rod 16 on the driving pipe 2 can regularly strike the left measuring belt 4 and move along with the trunk growth to drive the left measuring belt 4, marks can be marked on different positions of the left measuring belt 4, and the tree growth speed is higher, the tree growth speed is lower, the distance between adjacent marks is smaller, and the tree growth speed in different periods can be judged through the distance between the adjacent marks.

By designing the water seepage holes 42 with different sizes, the time interval of the sliding rod 16 on the driving tube 2 striking the left measuring belt 4 can be controlled, for example, by controlling the size of the water seepage holes 42, the water in the elastic water bag 25 can flow into the water drum 10 for a month to enable the float 28 to drive the first gear 8 to move upwards to be separated from the second gear 7, and the sliding rod 16 on the driving tube 2 strikes the left measuring belt 4, so that the interval time of each marking is one month.

Example 2

As shown in fig. 1 to 11, in the case where the other portions are the same as in embodiment 1, this embodiment differs from embodiment 1 in that: the marker assembly further includes: the fixed rod 14 is fixedly arranged on one side of the inside of the chute 15, a conical first spike 23 is fixedly arranged at the end part of the fixed rod 14, and the first spike 23 extends out of the chute 15; the marking structure is characterized in that a plurality of marking structures are axially arranged on the other side of the inside of the sliding groove 15 along the sliding rod 16 in a sliding manner; the limiting grooves 19 are symmetrically formed in one end, close to the first spike 23, of the inner wall of the sliding groove 15; the limiting plate 9 is connected with the limiting plate 9 in a sliding way in the limiting groove 19; the third spring 18, the third spring 18 is located in the spacing groove 19, and third spring 18 one end and limiting plate 9 rigid coupling, the rigid coupling of the inner wall of spacing groove 19 is passed through to the third spring 18 other end.

The marking structure comprises: a plurality of barbs 22 are fixedly arranged on one side of the second spike 21; a short rod 20, wherein the short rod 20 is fixedly connected with a second spike 21; the fourth spring 24, the fourth spring 24 is located in the spout 15, and the upper end of fourth spring 24 is fixedly connected with the short rod 20 that is located the below, and the lower extreme of fourth spring 24 is fixedly connected with the inner wall of spout 15.

Working principle: when the sliding rod 16 on the driving tube 2 hits the left measuring belt 4, the first spike 23 and the second spike 21 synchronously penetrate into the left measuring belt 4, when the sliding rod 16 rotates to be separated from the left measuring belt 4, the second spike 21 is left in the left measuring belt 4 due to the barbs 22, the second spike 21 and the short rod 20 slide in the sliding groove 15 to push the limiting plate 9 into the limiting groove 19, the second spike 21 and the short rod 20 are finally separated from the sliding rod 16 and left in the left measuring belt 4, the sliding rod 16 on the driving tube 2 hits the marks of the left measuring belt 4, after the second spike 21 and the short rod 20 are separated from the sliding rod 16, the limiting plate 9 is protruded from the limiting groove 19 again under the action of the third spring 18, and the fourth spring 24 pushes the mark structure in the sliding groove 15 to move upwards, so that the second spike 21 of the mark structure positioned at the top is blocked by the limiting plate 9, and preparation is made for the next hit of the left measuring belt 4.

The foregoing has shown and described the basic principles, principal features and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the above-described embodiments, and that the above-described embodiments and descriptions are only preferred embodiments of the present invention, and are not intended to limit the invention, and that various changes and modifications may be made therein without departing from the spirit and scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. Forestry measuring device, its characterized in that: comprising the following steps:

the left measuring belt (4) and the right measuring belt (45) are respectively and fixedly arranged at the left end and the right end of the belt, the left measuring belt (4) is fixedly connected with the left end of the elastic belt (43), and the right end of the elastic belt (43) is detachably connected with the right measuring belt (45);

the belt head (1) is fixedly connected with the right measuring belt (45);

a marking mechanism mounted on top of the belt head (1) for marking marks on the left measuring belt (4) periodically;

a water tank (29), wherein the water tank (29) is arranged in the belt head (1);

an elastic water bag (25), wherein the water bag (25) is arranged in the water tank (29);

the base (34) is fixedly arranged at the top of the belt head (1), a first through hole (35) is formed in the base (34) in a penetrating mode, a water pipe (36) is fixedly arranged at the top of the belt head (1), the upper end of the water pipe (36) is communicated with the first through hole (35), and the lower end of the water pipe (36) is fixedly connected and communicated with the water bag (25);

a water flow control assembly mounted within the first through bore (35);

the lower end of the water drum (10) is fixedly connected with the base (34);

the torsion spring (33) is sleeved on the water drum (10), and the lower end of the torsion spring (33) is connected with the base (34);

the first gear (8) is sleeved on the water drum (10);

one end of the driving tube (2) is fixedly connected with the first gear (8), the other end of the driving tube (2) is connected with the marking component, and the upper end of the torsion spring (33) is connected with the driving tube (2);

the lower end of the L-shaped connecting pipe (26) penetrates through the first gear (8) to be fixedly connected and communicated with the driving pipe (2), and the upper end of the L-shaped connecting pipe (26) is fixedly connected and communicated with the second water pipe (27);

an oval hollow float (28), wherein the float (28) is positioned in the water drum (10), and the top of the float (28) is fixedly connected and communicated with the lower end of the second water pipe (27);

the second gear (7) is meshed with the first gear (8), the second gear (7) is rotationally connected to the top of the rotating shaft (6), and the bottom end of the rotating shaft (6) is fixedly connected with the top of the belt head (1);

the tooth grooves (5) are formed in one side, close to the belt head (1), of the left measuring belt (4), and a plurality of tooth grooves (5) are formed in the length direction of the left measuring belt (4);

the annular air bag (31), the annular air bag (31) is fixedly sleeved on the float (28), a plurality of air holes (30) are formed in the top and the bottom of the annular air bag (31), a plurality of short pipes (32) are arranged in the annular air bag (31), and the short pipes (32) are fixedly connected and communicated with the float (28);

the water flow control assembly includes:

the baffle plates (38), two baffle plates (38) are symmetrically arranged in the first through hole (35), and the bottoms of the sides, far away from each other, of the two baffle plates (38) are connected with the inner wall of the first through hole (35) through hinges (39);

a triangular prism-shaped second baffle (37), wherein the second baffle (37) is fixedly arranged on one side, close to each other, of the two baffles (38);

the middle parts of one sides of the two second baffles (37) which are close to each other are provided with water seepage holes (42);

the support plates (41) are symmetrically arranged in the first through holes (35), the support plates (41) are fixedly connected with the inner walls of the first through holes (35), and the support plates (41) are connected with the baffle plates (38) through springs (40);

the marking assembly includes:

the sliding cylinder (13) is fixedly connected and communicated with the bottom of the connecting water pipe (17), and the top of the connecting water pipe (17) is fixedly connected and communicated with the driving pipe (2);

the sliding rod (16), sliding rod (16) sliding connection is in slide tube (13), be provided with a plurality of second springs (12) in slide tube (13), second spring (12) one end and slide rod (16) rigid coupling, second spring (12) other end and slide tube (13) inner wall rigid coupling, slide rod (16) are inside to have offered spout (15) along slide rod (16) axial;

the marker assembly further includes:

the fixed rod (14), fixed rod (14) has been set firmly to one side in spout (15), fixed rod (14) tip has set firmly first spike (23) of toper, first spike (23) extends outside spout (15);

the marking structure is characterized in that a plurality of marking structures are axially arranged on the other side of the inside of the sliding groove (15) in a sliding manner along the sliding rod (16);

the limiting grooves (19) are symmetrically formed in one end, close to the first spike (23), of the inner wall of the sliding groove (15);

the limiting plate (9) is connected with the limiting plate (9) in a sliding way in the limiting groove (19);

the third spring (18), third spring (18) are located spacing inslot (19), third spring (18) one end and limiting plate (9) rigid coupling, third spring (18) other end and limiting groove (19) inner wall rigid coupling.

2. A forestry measurement device according to claim 1, wherein: further comprises:

the two guide sleeves (3), the guide sleeves (3) are sleeved on the left measuring belt (4), and the guide sleeves (3) are fixedly connected with the belt head (1).

3. A forestry measurement device according to claim 2, wherein: the marking mechanism further includes:

the rain cover (44), rain cover (44) are located water drum (10) top, rain cover (44) and second water pipe (27) top rigid coupling and intercommunication.

4. A forestry measurement device according to claim 3, wherein: the marking structure comprises:

a conical second spike (21), wherein a plurality of barbs (22) are fixedly arranged on one side of the second spike (21);

and the short rod (20) is fixedly connected with the second spike (21).

5. A forestry measurement device as set forth in claim 4, wherein: the marking structure further includes:

the fourth spring (24), fourth spring (24) are located spout (15), fourth spring (24) upper end and be located short lever (20) rigid coupling of below, fourth spring (24) lower extreme and spout (15) inner wall rigid coupling.