Tree diameter at breast height measuring device for forestry investigation

Abstract

The utility model discloses a tree diameter at breast height measuring device for forestry reconnaissance, and relates to the technical field of tree diameter at breast height measurement, a connecting sleeve is sleeved outside a rotating rod, a measuring scale is sleeved outside the rotating rod between the connecting sleeve and a fixed sleeve, and limiting discs are further arranged outside the rotating rod on two sides of the connecting sleeve. A pressing mechanism is arranged on the upper surface of the fixing sleeve and comprises a mounting rod penetrating through the upper surface of the fixing sleeve, two sets of connecting plates are symmetrically arranged on the lower surface of the mounting rod, a rotating shaft is rotationally mounted between the two sets of connecting plates, and the rotating shaft is sleeved with a pressing roller; and a cleaning mechanism is arranged in front of the measuring scale between the connecting sleeve and the fixing sleeve. Through the arrangement of the pressing mechanism, the pressing roller arranged outside the rotating shaft is in contact with the measuring ruler, so that the measuring ruler can be pressed, the stability of the measuring ruler is ensured, and the situation that the measuring work is affected due to the fact that the measuring ruler moves when the diameter at breast height of a tree is measured is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of tree diameter at breast height measurement, in particular to a tree diameter at breast height measurement device for forestry surveying and mapping. Background Technique

[0002] Forestry surveying and mapping refers to the process of systematically investigating, measuring, analyzing, and evaluating forest resources and their related environments. When conducting forestry surveying and research, measuring the tree diameter at breast height is an essential survey indicator. By calculating the tree diameter at breast height, the overall growth trend of the tree can be effectively recorded.

[0003] A Chinese patent discloses a tree diameter at breast height measurement device for forestry surveying (authorization announcement number CN2199563763U). In this patented technology, the tape measure is pulled out from inside the tape measure housing, then the tape measure is wound around the tree diameter at breast height, and the T-shaped buckle is buckled into the T-shaped card slot opened on the protruding ear. After the buckling is completed, the spring has a contracting force on the tape measure, making the tape measure tightly bound, thus realizing the measurement of the tree diameter at breast height. The scale on the tape measure can be observed through the scale viewing window.

[0004] However, most of the existing methods for measuring the tree diameter at breast height in forestry surveys use a tape measure. After measurement, the tape measure is directly retracted, which causes contaminants on the tree to adhere to the outside of the tape measure, thereby affecting the subsequent use of the measuring tape. For example, in the above-mentioned comparative document, it uses the method of directly retracting the tape measure after measurement. In actual application, when the tape measure is directly retracted after measurement, it is easy for the contaminants adhering to the tree to affect the subsequent forestry surveying and mapping work. Therefore, those skilled in the art have provided a tree diameter at breast height measurement device for forestry surveying to solve the problems raised in the above background technique. Content of the Utility Model

[0005] In view of the deficiencies of the prior art, the utility model provides a tree diameter at breast height measurement device for forestry surveying, which solves the problems raised in the above background technique.

[0006] To achieve the above objectives, the utility model is realized through the following technical solutions: A tree diameter at breast height measurement device for forestry surveying includes: a fixed sleeve and a handle provided at one end of the fixed sleeve. The other end of the fixed sleeve is penetrated by a rotating rod. A connecting sleeve is sleeved outside the rotating rod, and a measuring tape is sleeved between the connecting sleeve and the fixed sleeve on the outside of the rotating rod. Limiting disks are also provided on both sides of the connecting sleeve outside the rotating rod. A pressing mechanism is provided on the upper surface of the fixed sleeve. The pressing mechanism includes a mounting rod penetrating the upper surface of the fixed sleeve. Two groups of connecting plates are symmetrically arranged on the lower surface of the mounting rod. A rotating shaft is rotatably installed between the two groups of connecting plates, and a pressing roller is sleeved outside the rotating shaft.

[0007] A cleaning mechanism is further provided between the connecting sleeve and the fixed sleeve in front of the measuring ruler. The cleaning mechanism includes a connecting rod disposed on one side of the connecting sleeve and the fixed sleeve. One end of the connecting rod is connected with a cleaning plate. A cleaning groove is formed on the upper surface of the cleaning plate, and a cleaning pad is adhered to the inner side of the cleaning groove.

[0008] As a further technical solution of the present invention, a bearing is arranged inside the fixed sleeve, and one end of the rotating rod is embedded inside the bearing and rotatably connected with the bearing.

[0009] As a further technical solution of the present invention, a fixing hole is formed inside the fixed sleeve. The lower end of the mounting rod penetrates inside the fixing hole, and an adjusting nut is threadedly connected to the outer surface of the mounting rod on the lower surface of the fixed sleeve.

[0010] As a further technical solution of the present invention, the mounting rod is arranged in an "L" shape, and the outer surface of the pressing roller is in contact with the outer part of the measuring ruler.

[0011] As a further technical solution of the present invention, a mounting disc is installed at one end of the connecting rod, and the mounting disc is installed on one side of the connecting sleeve by bolts.

[0012] As a further technical solution of the present invention, the outer side of the cleaning pad is in contact with the outer surface of the measuring ruler, and the cleaning pad is made of sponge.

[0013] The present invention provides a tree diameter at breast height measuring device for forestry surveying, which has the following beneficial effects compared with the prior art:

[0014] 1. For the tree diameter at breast height measuring device designed in this way, through the setting of the pressing mechanism, the measuring ruler can be pressed by the pressing roller arranged on the outer part of the rotating shaft in contact with the measuring ruler, so as to ensure the stability of the measuring ruler, avoid moving during the measurement of the tree diameter at breast height and affecting the measurement work, and the position of the pressing roller can be conveniently adjusted through the setting of the adjusting nut for the purpose of pressing or releasing the measuring ruler. The structure is simple and the practicability is good.

[0015] 2. For the tree diameter at breast height measuring device designed in this way, through the setting of the cleaning mechanism, when the measuring ruler is wound up during the measurement of the tree diameter at breast height, the measuring ruler can pass through the cleaning groove, and the dust on the outer part of the measuring ruler can be cleaned by the cleaning pad inside the cleaning groove, so as to avoid the influence of dust on the subsequent use of the measuring ruler during the tree measurement. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic structural diagram of a tree diameter at breast height measuring device for forestry surveying;

[0017] Figure 2It is a schematic structural diagram of a pressing mechanism in a tree diameter at breast height measuring device for forestry survey;

[0018] Figure 3 It is a schematic structural diagram of a bearing in a tree diameter at breast height measuring device for forestry survey;

[0019] Figure 4 It is a schematic structural diagram of a cleaning mechanism in a tree diameter at breast height measuring device for forestry survey.

[0020] In the figure: 1, rotating rod; 11, limiting disc; 12, bearing; 2, fixed sleeve; 21, handle; 22, connecting sleeve; 3, measuring ruler; 4, cleaning mechanism; 41, connecting rod; 42, cleaning plate; 421, cleaning groove; 422, cleaning pad; 43, mounting plate; 5, pressing mechanism; 51, mounting rod; 52, adjusting nut; 53, connecting plate; 54, rotating shaft; 55, pressing roller. Specific embodiments

[0021] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0022] Please refer to Figures 1-4 , the present invention provides a technical solution for a tree diameter at breast height measuring device for forestry survey: including: a fixed sleeve 2 and a handle 21 provided at one end of the fixed sleeve 2. A rotating rod 1 penetrates through the other end of the fixed sleeve 2. A connecting sleeve 22 is sleeved on the outside of the rotating rod 1. A measuring ruler 3 is sleeved between the connecting sleeve 22 and the fixed sleeve 2 on the outside of the rotating rod 1. Limiting discs 11 are also provided on both sides of the connecting sleeve 22 on the outside of the rotating rod 1. A pressing mechanism 5 is provided on the upper surface of the fixed sleeve 2. The pressing mechanism 5 includes a mounting rod 51 penetrating through the upper surface of the fixed sleeve 2. Two groups of connecting plates 53 are symmetrically provided on the lower surface of the mounting rod 51. A rotating shaft 54 is rotatably installed between the two groups of connecting plates 53. A pressing roller 55 is sleeved on the outside of the rotating shaft 54. A cleaning mechanism 4 is also provided between the connecting sleeve 22 and the fixed sleeve 2 in front of the measuring ruler 3. This setting uses the pressing mechanism 5 to press the released measuring ruler 3 to prevent its displacement from affecting the measurement of the tree diameter at breast height. At the same time, when there is a gap between the pressing roller 55 and the measuring ruler 3, it is convenient to draw out the measuring ruler 3 for the measurement work of the tree.

[0023] The cleaning mechanism 4 includes a connecting rod 41 disposed on one side of the connecting sleeve 22 and the fixed sleeve 2. One end of the connecting rod 41 is connected with a cleaning plate 42. A cleaning groove 421 is formed on the upper surface of the cleaning plate 42. A cleaning pad 422 is adhered to the inner side of the cleaning groove 421. This setting utilizes the cleaning mechanism 4 to clean the measuring ruler 3 after measurement, avoiding the measuring ruler 3 being adhered to pollutants and affecting subsequent use.

[0024] As Figure 3 shown, a bearing 12 is provided inside the fixed sleeve 2. One end of the rotating rod 1 is embedded inside the bearing 12 and is rotatably connected to the bearing 12. This setting utilizes the rotational connection between the rotating rod 1 and the bearing 12 to facilitate the release or winding of the measuring ruler 3 provided outside the rotating rod 1.

[0025] As Figure 1 and Figure 2 shown, a fixing hole is formed inside the fixed sleeve 2. The lower end of the mounting rod 51 penetrates inside the fixing hole, and an adjusting nut 52 is threadedly connected to the outside of the mounting rod 51 on the lower surface of the fixed sleeve 2. The mounting rod 51 is arranged in an "L" shape, and the outer surface of the pressing roller 55 contacts the outside of the measuring ruler 3. This setting utilizes the adjusting nut 52 to adjust the position of the pressing roller 55 to facilitate the pressing and releasing of the measuring ruler 3, with good practicability.

[0026] As Figure 4 shown, one end of the connecting rod 41 is provided with a mounting disc 43. The mounting disc 43 is mounted on one side of the connecting sleeve 22 by bolts. This setting utilizes the bolts to facilitate the installation of the mounting disc 43, that is, to realize the installation of the cleaning plate 42 to facilitate the subsequent cleaning of the measuring ruler 3.

[0027] As Figure 4 shown, the outer side of the cleaning pad 422 contacts the outer surface of the measuring ruler 3, and the material of the cleaning pad 422 is sponge. This setting utilizes the cleaning pad 422 to clean the passing measuring ruler 3.

[0028] The working principle of the present utility model is as follows: When the tree diameter measuring device for forestry survey of the present utility model is in use, first, the surveyor can hold the handle 21 to carry the device. When arriving at the tree to be measured, the position of the adjusting mounting rod 51 can be adjusted by rotating the adjusting nut 52, so as to facilitate the adjustment of the position of the pressing roller 55. By pulling the measuring ruler 3, one end of the measuring ruler 3 can penetrate through the cleaning groove 421 to achieve the purpose of release. When pulling, the rotating rod 1 will rotate, so that it is convenient for the surveyor to take the released measuring ruler 3 to measure the tree diameter. After measurement, the rotating rod 1 can be rotated to wind up the measuring ruler 3, and when winding up, the cleaning pad 422 inside the cleaning groove 421 can clean the passing measuring ruler 3 to avoid contamination on the surface of the measuring ruler 3 affecting subsequent use. And after winding up, by rotating the adjusting nut 52 again, the pressing roller 55 will move downward to press the measuring ruler 3 to ensure the stability of the measuring ruler 3 and prevent it from moving and affecting the use. The device has a simple structure and convenient operation, and is convenient for the surveyor to carry, with good practicability.

[0029] The above are only the preferred embodiments of the present utility model. It should be noted that for those of ordinary skill in the art in this technical field, without departing from the principle of the present utility model, several improvements and refinements can be made, and these improvements and refinements should also be regarded as the protection scope of the present utility model. The structures, devices and operation methods not specifically described and explained in the present utility model, unless otherwise specifically stated and defined, are implemented according to the conventional means in this field.

Claims

1. A device for measuring the diameter at breast height of trees for forestry survey, characterized in that, Including: A fixed sleeve (2) and a handle (21) provided at one end of the fixed sleeve (2). A rotating rod (1) is penetratingly provided at the other end of the fixed sleeve (2). A connecting sleeve (22) is sleeved outside the rotating rod (1). A measuring scale (3) is sleeved between the connecting sleeve (22) and the fixed sleeve (2) outside the rotating rod (1). Limiting disks (11) are further provided on both sides of the connecting sleeve (22) outside the rotating rod (1). A pressing mechanism (5) is provided on the upper surface of the fixed sleeve (2). The pressing mechanism (5) includes a mounting rod (51) penetrating the upper surface of the fixed sleeve (2). Two groups of connecting plates (53) are symmetrically provided on the lower surface of the mounting rod (51). A rotating shaft (54) is rotatably installed between the two groups of connecting plates (53). A pressing roller (55) is sleeved outside the rotating shaft (54). A cleaning mechanism (4) is further provided between the connecting sleeve (22) and the fixed sleeve (2) in front of the measuring scale (3). The cleaning mechanism (4) includes a connecting rod (41) provided on one side of the connecting sleeve (22) and the fixed sleeve (2). One end of the connecting rod (41) is connected to a cleaning plate (42). A cleaning groove (421) is formed on the upper surface of the cleaning plate (42). A cleaning pad (422) is adhered to the inner side of the cleaning groove (421).

2. The tree diameter at breast height measuring device for forestry survey according to claim 1, wherein A bearing (12) is provided inside the fixed sleeve (2). One end of the rotating rod (1) is embedded inside the bearing (12) and is rotatably connected to the bearing (12).

3. The tree diameter at breast height measuring device for forestry survey according to claim 1, characterized in that, A fixing hole is formed inside the fixed sleeve (2). The lower end of the mounting rod (51) penetrates inside the fixing hole. A regulating nut (52) is threadedly connected to the outside of the mounting rod (51) on the lower surface of the fixed sleeve (2).

4. A tree diameter at breast height measuring device for forestry survey according to claim 1, characterized in that The mounting rod (51) is arranged in an "L" shape. The outer surface of the pressing roller (55) is in contact with the outside of the measuring scale (3).

5. The tree diameter at breast height measuring device for forestry survey according to claim 1, characterized in that, One end of the connecting rod (41) is provided with a mounting disk (43). The mounting disk (43) is mounted on one side of the connecting sleeve (22) by bolts.

6. The tree diameter at breast height measuring device for forestry survey according to claim 1, wherein The outer side of the cleaning pad (422) is in contact with the outer surface of the measuring scale (3). The material of the cleaning pad (422) is sponge.

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