Automatic detection instrument for diameter at breast height of tree

Abstract

The utility model relates to the technical field of measurement, and discloses an automatic detection instrument for the diameter at breast height of a tree, which comprises a flexible steel belt ruler, one end of the steel belt ruler is connected with a fixing device, and the fixing device comprises a mounting shell and a fixing assembly; a penetrating opening for the other end of the steel belt ruler to penetrate through is formed in the mounting shell, a mounting cavity for mounting the fixing assembly is formed in the mounting shell, and the mounting cavity is located above the penetrating opening and communicated with the penetrating opening; the fixing assembly comprises a fixing wheel, a mounting frame and a coil spring. When the diameter at the breast height of a tree trunk is measured, the steel belt ruler is tightly attached to the tree trunk and surrounds the tree trunk by a circle and then penetrates through the through hole, then the fixing assembly is pressed down, the fixing teeth on the fixing wheel are clamped into the tooth grooves of the steel belt ruler, and the steel belt ruler can be prevented from loosening under the action of the coil spring; the trunk can be continuously and automatically measured by means of the deformation quantity of the coil spring in the growth process, and the whole operation is simpler and more convenient.

Description

Technical Field

[0001] The utility model belongs to the technical field of measurement, and particularly relates to an automatic detection instrument for the diameter at breast height of a tree. Background Art

[0002] The diameter at breast height, also known as the trunk diameter, refers to the diameter of the trunk of a tree at breast height above the ground. When the cross-section is deformed, the average of the maximum and minimum values ​​is measured. Different trees have different breast heights, and different countries have different regulations on the diameter at breast height. In my country and most countries, the breast height is set at 1.3 meters above the ground.

[0003] The existing tree diameter at breast height measurement method mainly uses a tape measure or a steel ruler to measure around the tree. For example, the patent with application number CN201921977627.7 discloses a device for continuously and efficiently measuring the tree diameter at breast height, including a measuring ring, a measuring frame, a vernier ruler, a fixing hole, a spring and a hook. The left end of the measuring ring is installed with a measuring frame, the lower side of the left end of the measuring ring is provided with a vernier ruler, the measuring ring is provided with a fixing hole, and the spring is provided with a hook. When using the measuring device, after the measuring ring is wrapped around the trunk and passed through the measuring frame, the hooks at both ends of the spring need to be hung on the fixing holes of the measuring ring, and the continuous measurement of the trunk is achieved by relying on the spring deformation. However, when installing the spring, one end of the spring needs to be fixed in one of the fixing holes on the part of the measuring ring that passes through the measuring frame, and then the spring is stretched, and the other end of the spring is fixed in one of the fixing holes on the part that does not pass through the measuring frame, which is very troublesome, laborious, and difficult to operate.

[0004] In view of this, the inventor conducted in-depth research on the above-mentioned defects in the prior art, and thus came up with this case. Utility Model Content

[0005] The utility model aims to provide an automatic detection instrument for the diameter at breast height of trees, which can solve the problems that the existing measuring devices are troublesome and difficult to operate.

[0006] In order to achieve the above technical purpose, the technical solution adopted by the utility model is as follows:

[0007] The automatic tree diameter at breast height detection instrument comprises a flexible steel tape measure, one end of which is connected to a fixing device, and the fixing device comprises a mounting shell and a fixing assembly; the mounting shell is formed with a through hole for the other end of the steel tape measure to pass through, and the mounting shell is formed with a mounting cavity for mounting the fixing assembly, the mounting cavity is located above the through hole and is communicated with the through hole; the fixing assembly comprises a fixing wheel, a mounting frame and a coil spring; the mounting frame comprises a mounting block slidably mounted in the mounting cavity, mounting plates located at both ends of the bottom of the mounting block, and a mounting plate fixedly connected between the two mounting plates. The mounting shaft between the mounting plates; the fixed wheel is rotatably connected to the mounting shaft, one end of the coil spring is formed with a first plug-in column plugged into the outer side of the mounting plate, and the other end is formed with a second plug-in column plugged into the end of the fixed wheel, the outer side of the mounting plate is formed with a first plug-in hole matched with the first plug-in column, the end of the fixed wheel is formed with a second plug-in hole matched with the second plug-in column, the circumferential surface of the fixed wheel is formed with a plurality of fixed teeth arranged in a circular array along the axis of the fixed wheel, and the steel tape ruler is formed with a plurality of tooth grooves matched with the fixed teeth. When measuring the trunk diameter at breast height, the steel tape ruler is wrapped around the trunk tightly, passed through the through hole, and then the fixing assembly is pressed down so that the fixed teeth on the fixed wheel are stuck in the tooth grooves of the steel tape ruler. The steel tape ruler can be prevented from loosening under the action of the coil spring. The continuous automatic measurement of the trunk can be achieved by relying on the deformation of the coil spring during the growth process, making the operation simpler and more convenient.

[0008] Furthermore, the top of the mounting block is rotatably connected with a control column, the mounting shell is formed with a through hole for the control column to pass through; an annular clamping groove is formed on the inner side wall of the through hole, a slideway connected to the clamping groove is formed on the top of the mounting shell; a clamping block that can pass through the slideway and cooperate with the clamping groove is formed on the control column. After the fixed wheel is moved to cooperate with the steel tape ruler, the clamping block and the clamping groove can prevent the fixed wheel from detaching from the steel tape ruler.

[0009] Furthermore, an anti-slip strip is provided on the side wall of the control column, which makes it easier to rotate the control column.

[0010] Furthermore, two inner walls of the installation cavity are formed with slide grooves, and two sides of the installation block are formed with sliders that cooperate with the slide grooves; a return spring is installed in the slide groove, one end of the return spring is fixedly connected to the bottom of the slider, and the other end is fixedly connected to the bottom wall of the slide groove. When the steel tape ruler is removed, the return spring can quickly lift up the fixing assembly to separate the fixing wheel from the steel tape ruler.

[0011] Furthermore, an arc-shaped groove is formed at the bottom of the mounting shell, which can make the mounting shell fit the tree trunk more closely and make the measurement more accurate.

[0012] After adopting the above structure, the tree breast diameter automatic detection instrument involved in the utility model, compared with the prior art, when measuring the breast diameter of a tree trunk, the steel tape measure is wrapped around the trunk tightly and then passed through the through hole, and then the fixing component is pressed down to make the fixed teeth on the fixed wheel fit into the tooth grooves of the steel tape measure. The steel tape measure can be prevented from loosening under the action of the coil spring, and the continuous automatic measurement of the tree trunk can be achieved by relying on the deformation of the coil spring during its growth process, and the whole operation is simpler and more convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The present invention can be further described by the non-limiting embodiments given in the accompanying drawings;

[0014] Figure 1 It is a structural schematic diagram of the utility model;

[0015] Figure 2 for Figure 1 Schematic cross-sectional view of ;

[0016] Figure 3 It is a structural schematic diagram of the fixing component in the utility model;

[0017] Figure 4 A schematic diagram of the structure of the mounting frame in the utility model;

[0018] Figure 5 It is a structural schematic diagram of the coil spring in the utility model;

[0019] Figure 6 This is a schematic diagram of the structure of the fixed wheel in the utility model;

[0020] Figure 7 It is a structural schematic diagram of the installation shell in the utility model;

[0021] Figure 8 for Figure 1 A local enlarged schematic diagram of point A in the middle.

[0022] The main component symbols are described as follows:

[0023] Steel tape ruler 1, tooth groove 11, mounting shell 2, through-hole 21, mounting cavity 22, slide groove 221, through hole 23, card slot 231, slideway 232, arc-shaped groove 24, fixing component 3, fixing wheel 31, second plug-in hole 311, fixing tooth 312, mounting frame 32, mounting block 321, mounting plate 322, first plug-in hole 3221, slider 3222, mounting shaft 323, coil spring 33, first plug-in column 331, second plug-in column 332, control column 34, card block 341, anti-slip strip 342, reset spring 35. DETAILED DESCRIPTION

[0024] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that in the drawings or in the specification, similar or identical parts use the same figure numbers, and the implementation methods not shown or described in the drawings are forms known to ordinary technicians in the relevant technical field. In addition, the directional terms mentioned in the embodiments, such as "upper", "lower", "top", "bottom", "left", "right", "front", "back", etc., are only referenced to the directions of the drawings and are not used to limit the scope of protection of the present invention.

[0025] like Figures 1 to 8 As shown, an automatic tree diameter at breast height detection instrument involved in the utility model comprises a flexible steel tape measure 1, the steel tape measure 1 has scales, one end of the steel tape measure 1 is connected to a fixing device, the fixing device comprises a mounting shell 2 and a fixing assembly 3; a through hole 21 is formed on the mounting shell 2 for the other end of the steel tape measure 1 to pass through, the through hole 21 is close to the bottom of the mounting shell 2, a mounting cavity 22 for mounting the fixing assembly 3 is formed in the mounting shell 2, the mounting cavity 22 is located above the through hole 21 and is communicated with the through hole 21; the fixing assembly 3 comprises a fixing wheel 31, a mounting frame 32 and a coil spring 33; the mounting frame 32 comprises a mounting block 321 slidably mounted in the mounting cavity 22, mounting plates 322 located at both ends of the bottom of the mounting block 321 and a mounting shaft 323 fixedly connected between the two mounting plates 322; the fixing wheel 31 is rotatably connected to the mounting cavity 22 On the mounting shaft 323, a mounting hole that cooperates with the mounting shaft 323 is formed in the middle of the fixed wheel 31; one end of the coil spring 33 is formed with a first plug-in column 331 that is plugged into the outer side of the mounting plate 322, and the other end is formed with a second plug-in column 332 that is plugged into the end of the fixed wheel 31; the outer side of the mounting plate 322 is formed with a first plug-in hole 3221 that cooperates with the first plug-in column 331, and the end of the fixed wheel 31 is formed with a second plug-in hole 311 that cooperates with the second plug-in column 332. Specifically, there are two coil springs 33, which are respectively mounted on both ends of the fixed wheel 31; a plurality of fixed teeth 312 arranged in a circular array along the axis of the fixed wheel 31 are formed on the circumferential surface of the fixed wheel 31, and a plurality of tooth grooves 11 that cooperate with the fixed teeth 312 are formed on the steel tape ruler 1, and the plurality of tooth grooves 11 are arranged at equal intervals along the length direction of the steel tape ruler 1. When measuring the trunk's diameter at breast height, the steel tape measure 1 is wrapped around the trunk tightly and passed through the through hole, and then the fixing component 3 is pressed down to make the fixing teeth 312 on the fixing wheel 31 fit into the tooth grooves 11 of the steel tape measure 1. The coil spring 33 can prevent the steel tape measure 1 from loosening, and the deformation of the coil spring 33 can be used to realize continuous and automatic measurement of the trunk during its growth, making the operation simpler and more convenient.

[0026] Preferably, in order to facilitate the control of the movement of the fixing component 3, a control column 34 is rotatably connected to the top of the mounting block 321, a rotating cavity is formed on the top of the mounting block 321, an annular limiting step is formed on the inner top of the rotating cavity, and a limiting block is formed on the control column 34 to cooperate with the limiting step to prevent the control column 34 from detaching from the mounting block 321; a through hole 23 is formed on the mounting shell 2 for the control column 34 to pass through; an annular groove 231 is formed on the inner side wall of the through hole 23, and a slide 232 connected to the groove 231 is formed on the top of the mounting shell 2; a block 341 is formed on the control column 34, which can pass through the slide 232 and cooperate with the groove 231. After the fixed wheel 31 is moved to cooperate with the steel tape ruler 1, the fixing wheel 31 can be prevented from detaching from the steel tape ruler 1 by the clamping block 341 and the clamping slot 231. During the specific operation, the entire fixing assembly 3 is first moved downward by pressing the control column 34 until the fixed tooth 312 on the fixed wheel 31 is clamped into the tooth groove 11 of the steel tape ruler 1. During the pressing process, the clamping block 341 slides into the clamping slot 231 along the slide 232, and then the control column 34 is rotated to make the clamping block 341 detach from the slide 232 and cooperate with the clamping slot 231. In this way, the fixing assembly 3 can be fixed to prevent the fixed wheel 31 from detaching from the steel tape ruler 1.

[0027] Preferably, an anti-slip strip 342 is further provided on the side wall of the control column 34. The anti-slip strip 342 makes it easier to rotate the control column 34.

[0028] Preferably, two inner walls of the installation cavity 22 are formed with slide grooves 221, and two sides of the installation block 321 are formed with sliders 3222 that cooperate with the slide grooves 221; a return spring 35 is installed in the slide groove 221, one end of the return spring 35 is fixedly connected to the bottom of the slider 3222, and the other end is fixedly connected to the bottom wall of the slide groove 221. When the steel tape ruler 1 is disassembled, the return spring 35 can quickly lift up the fixing assembly 3, so that the fixing wheel 31 is separated from the steel tape ruler 1.

[0029] Preferably, an arc-shaped groove 24 is formed at the bottom of the mounting shell 2. The arc-shaped groove 24 can make the mounting shell 2 fit the tree trunk more closely, making the measurement more accurate.

[0030] The above is a detailed introduction to the tree diameter at breast height automatic detection instrument provided by the utility model. The description of the specific embodiment is only used to help understand the method and core idea of ​​the utility model. It should be pointed out that for ordinary technicians in this technical field, without departing from the principle of the utility model, several improvements and modifications can be made to the utility model, and these improvements and modifications also fall within the scope of protection of the claims of the utility model.

Claims

1. An automatic tree diameter at breast height detection instrument, comprising a flexible steel tape measure (1), characterized in that: One end of the steel tape ruler (1) is connected to a fixing device, and the fixing device comprises a mounting shell (2) and a fixing assembly (3); a through hole (21) is formed on the mounting shell (2) for the other end of the steel tape ruler (1) to pass through, and a mounting cavity (22) is formed in the mounting shell (2) for mounting the fixing assembly (3), and the mounting cavity (22) is located above the through hole (21) and communicates with the through hole (21); the fixing assembly (3) comprises a fixing wheel (31), a mounting frame (32) and a coil spring (33); the mounting frame (32) comprises a mounting block (321) slidably mounted in the mounting cavity (22), mounting plates (322) located at both ends of the bottom of the mounting block (321), and a mounting shaft (323) fixedly connected between the two mounting plates (322) The fixed wheel (31) is rotatably connected to the mounting shaft (323); one end of the coil spring (33) is formed with a first plug-in column (331) plugged into the outer side of the mounting plate (322); the other end is formed with a second plug-in column (332) plugged into the end of the fixed wheel (31); the outer side of the mounting plate (322) is formed with a first plug-in hole (3221) matched with the first plug-in column (331); the end of the fixed wheel (31) is formed with a second plug-in hole (311) matched with the second plug-in column (332); a plurality of fixed teeth (312) arranged in a circular array along the axis of the fixed wheel (31) are formed on the circumferential surface of the fixed wheel (31); and a plurality of tooth grooves (11) matched with the fixed teeth (312) are formed on the steel tape ruler (1).

2. The tree diameter at breast height automatic detection instrument according to claim 1, characterized in that: The top of the mounting block (321) is rotatably connected to a control column (34); a through hole (23) is formed on the mounting shell (2) for the control column (34) to pass through; an annular groove (231) is formed on the inner side wall of the through hole (23); a slideway (232) connected to the groove (231) is formed on the top of the mounting shell (2); and a block (341) is formed on the control column (34) and can pass through the slideway (232) and cooperate with the groove (231).

3. The tree diameter at breast height automatic detection instrument according to claim 2, characterized in that: An anti-slip strip (342) is also provided on the side wall of the control column (34).

4. The automatic tree diameter at breast height detection instrument according to claim 3 is characterized by: Slide grooves (221) are formed on the two inner walls of the installation cavity (22), and sliders (3222) cooperating with the slide grooves (221) are formed on both sides of the installation block (321); a return spring (35) is installed in the slide groove (221), one end of the return spring (35) is fixedly connected to the bottom of the slider (3222), and the other end is fixedly connected to the bottom wall of the slide groove (221).

5. The automatic tree diameter at breast height detection instrument according to claim 1, characterized in that: An arc-shaped groove (24) is formed at the bottom of the installation shell (2).

Images