Portable folding device for field quadrat survey

Abstract

The utility model discloses a portable folding device for field quadrat survey, which relates to the technical field of surveying and mapping devices and comprises a main ruler, the main ruler is provided with a folding groove, a first folding ruler and a second folding ruler are folded in the folding groove, and one end of the first folding ruler is hinged in a groove close to one end of the folding groove. One end of the second folding ruler is hinged in a groove close to the other end of the folding groove; limiting mechanisms are arranged at the positions, connected with the folding grooves, of the first folding ruler and the second folding ruler. The limiting mechanisms are used for limiting when the first folding ruler and the second folding ruler rotate to be perpendicular to the main ruler. A lock catch used for locking the first folding ruler and the second folding ruler after the first folding ruler and the second folding ruler are folded into the folding groove is further arranged in the middle of the folding groove. The portable field investigation device is simple in structure, small in occupied space, convenient to carry and use and capable of being folded and rapidly unfolded, and the working efficiency of field investigation can be improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of surveying and mapping devices, and particularly relates to a portable folding device for field quadrat investigation. Background Art

[0002] At present, when conducting field plant community investigations, it is usually necessary to set up quadrats with sizes ranging from 20 cm × 20 cm to 100 cm × 100 cm under the forest. In the prior art, a ruler is usually used to mark the positions of the squares, and then tubes (or poles) are inserted into the ground at the four corners of the squares, and then ropes are used to connect the corners. This not only involves complex operations, but also requires a large number of auxiliary materials, complex operations, and occupies a large amount of space, failing to achieve the desired effect.

[0003] In view of the above technical problems, there is an urgent need for a portable folding device for field quadrat investigation that occupies a small space and is convenient to carry to meet the actual use requirements. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a portable folding device for field quadrat investigation to solve the above technical problems existing in the prior art.

[0005] To achieve the above purpose, the utility model provides the following solution: A portable folding device for field quadrat investigation, comprising:

[0006] A main ruler having a folding slot with an open top, and at least one side thereof is provided with scales along the length direction;

[0007] A first folding ruler, one end of which is hinged in the slot near one end of the folding slot, and at least one side thereof is provided with scales along the length direction;

[0008] A second folding ruler, one end of which is hinged in the slot near the other end of the folding slot and is arranged in a staggered manner with the first folding ruler, and at least one side thereof is provided with scales along the length direction;

[0009] A limiting mechanism is arranged at the positions where the first folding ruler and the second folding ruler are respectively connected to the folding slot, and is used for forming a limit when the first folding ruler and the second folding ruler rotate to be perpendicular to the main ruler;

[0010] A lock catch is arranged at the middle position of the folding slot and is used for locking the first folding ruler and the second folding ruler after they are folded into the folding slot.

[0011] Preferably, rotating shafts are provided at positions close to both ends inside the folding slots, and the first folding ruler / the second folding ruler rotates on the rotating shafts; a rotating body protrudes axially along the rotating shaft at the rotating end of the first folding ruler / the second folding ruler, and a locking post track groove with a 1 / 4 circular arc is formed on the rotating body, and the center of the circular arc of the locking post track groove coincides with the axis of the rotating shaft; the limiting mechanism includes a shaft seat fixed on the inner side of the folding slot opposite to the rotating body, and a locking post is elastically connected to one side of the shaft seat facing the rotating body, one end of the locking post enters the locking post track groove, and a spherical locking groove for accommodating the end of the locking post to be snapped into is provided at the end of the locking post track groove.

[0012] Preferably, a locking post telescopic groove for accommodating one end of the locking post to enter is formed on the shaft seat; the locking post includes a ball head end and a stepped end, the stepped end is connected to a spring, the end of the spring away from the locking post is fixed in the locking post telescopic groove, and the ball head end cooperates with the locking post track groove.

[0013] Preferably, the limiting mechanism is a limiting piece obliquely supported at the hinged end of the first folding ruler / the second folding ruler and the main ruler, the limiting piece includes two hinged connecting rods, one ends of the two connecting rods are hinged to each other, and the ends of the two connecting rods away from each other are respectively hinged to the main ruler and the first folding ruler / the second folding ruler.

[0014] Preferably, a closed loop line is connected to the free ends of the first folding ruler and the second folding ruler, and when the first folding ruler and the second folding ruler are unfolded, the closed loop line is straightened.

[0015] Preferably, a closed loop line winding box is fixed to the free end of the first folding ruler and / or the second folding ruler, and one end of the closed loop line is elastically wound in the closed loop line winding box.

[0016] Preferably, the buckle is a "mountain"-shaped elastic piece fixed in the middle of the folding slot.

[0017] Preferably, the main ruler, the first folding ruler, and the second folding ruler have the same length.

[0018] Preferably, the main ruler, the first folding ruler, and the second folding ruler are all made of stainless steel.

[0019] The present utility model discloses the following technical effects:

[0020] The portable field quadrat survey folding device of the present utility model, when a quadrat needs to be set up during field surveys, the folding ruler inside the main ruler is turned to form a 90-degree angle with the main ruler and extended to a specific length to form a square loop. Placing the square loop on the ground can be used as a quadrat for surveys. The structure of the present utility model is simple and convenient to use, capable of being folded and quickly opened, which can improve the efficiency of field survey work. The structure of the present utility model is simple, occupies little space, is convenient to carry, and is easy to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0022] Figure 1 Structural schematic diagram of Embodiment 1 of the present utility model;

[0023] Figure 2 Top view of Embodiment 1 of the present utility model in the folded state;

[0024] Figure 3 Stereogram of Embodiment 1 of the present utility model in the folded state;

[0025] Figure 4 Exploded view of Embodiment 1 of the present utility model after removing the main ruler in the folded state;

[0026] Figure 5 Schematic diagram of the connection relationship between the main ruler and the folding ruler in Embodiment 1 of the present utility model;

[0027] Figure 6 Side view of the end of the folding ruler in Embodiment 1 of the present utility model;

[0028] Figure 7 Exploded top view of the limiting mechanism in Embodiment 1 of the present utility model;

[0029] Figure 8 Axonometric exploded view of the limiting mechanism in Embodiment 1 of the present utility model;

[0030] Figure 9 Schematic diagram of the positional relationship between the closed-loop winding box and the folding ruler in Embodiment 1 of the present utility model;

[0031] Figure 10 Structural schematic diagram of the lock in Embodiment 1 of the present utility model;

[0032] Figure 11 Front view of the lock in Embodiment 1 of the present utility model;

[0033] Figure 12 This is a schematic structural diagram of Embodiment 2 of the present utility model.

[0034] In the figure: 1, main scale; 2, first folding scale; 3, second folding scale; 4, closed-loop winding box; 5, closed loop; 6, limiting piece; 7, lock; 8, rotating body; 9, shaft seat; 10, locking column; 11, rotating shaft; 12, locking column track groove; 13, spherical locking groove; 14, spring; 15, locking column telescopic groove; 16, ball head end; 17, stepped end; 71, first locking position; 72, second locking position; 73, arc-shaped elastic piece. Specific embodiments

[0035] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0036] To make the above objects, features, and advantages of the present utility model more obvious and understandable, the present utility model will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0037] Referring to Figures 1 to 11 As shown, Embodiment 1 of the present utility model provides a portable field quadrat survey folding device, including a main scale 1. Two folding scales are folded inside the main scale 1, and the two folding scales are respectively hinged at different ends on the same side of the main scale 1; as Figure 1 shown, the first folding scale 2 is hinged to the right end of the main scale 1 and rotates 90 degrees clockwise when unfolded; the second folding scale 3 is hinged to the left end of the main scale 1 and rotates 90 degrees counterclockwise when unfolded. The distal ends (far from the end connected to the main scale 1) of the first folding scale 2 and the second folding scale 3 after unfolding are connected with a closed loop 5. The closed loop 5, the first folding scale 2, the main scale 1, and the second folding scale 3 enclose a square circle. Placing this square circle on the ground forms a quadrat area within a specific size range, and this quadrat area can be used as a quadrat for investigation. Due to the connection method of the main scale 1 cooperating with the two folding scales, the device in this embodiment can be quickly folded and opened, so as to improve the work efficiency of field investigation, and is convenient to use and carry.

[0038] Specifically, to make the above structure more reasonable, as Figure 2 and Figure 3As shown in the figure, the main scale 1 is arranged in a groove structure, and a folding groove is opened at the top. This folding groove is used to accommodate the first folding scale 2 and the second folding scale 3 when they are folded. For this purpose, two rotating shafts 11 are fixedly connected at positions near both ends in the folding groove. One end of the first folding scale 2 is rotatably connected to the rotating shaft 11 on the right side, and one end of the second folding scale 3 is rotatably connected to the rotating shaft 11 on the left side. Moreover, the first folding scale 2 and the second folding scale 3 are arranged in a staggered manner in the width direction of the folding groove, and they do not interfere with each other during the folding process.

[0039] It can be understood that in order to make the square loop formed after the first folding scale 2 and the second folding scale 3 are unfolded a square, the lengths of the first folding scale 2 and the second folding scale 3 are equal, and the length of the main scale 1 is slightly larger than that of the two folding scales, so that the two folding scales can be accommodated in the folding groove. At this time, the distance between the two rotating shafts 11 on the main scale 1 is equal to the lengths of the two folding scales. At this time, when the first folding scale 2 and the second folding scale 3 are unfolded, they can enclose a square loop.

[0040] In order to make the first folding scale 2 and the second folding scale 3 be firmly limited in the folding groove after folding, a lock 7 is arranged in the middle of the folding groove of the main scale 1. This lock 7 limits the first folding scale 2 and the second folding scale 3 entering the folding groove, so that they can keep their positions fixed in the folding groove without being affected by external forces and will not shake randomly or unfold by themselves. Preferably, the structure of the lock 7 can be a "mountain"-shaped card seat, which has two card slots facing upward. The width of the card slots is slightly smaller than the thickness of the two folding scales, and elastic pieces can be connected to the edges of the card slots. On the one hand, it is convenient for the folding scales to be inserted into the card slots. On the other hand, the elastic pieces elastically squeeze the folding scales, and the frictional force between them can meet the requirement of limiting the folding scales.

[0041] Since the first folding scale 2 and the second folding scale 3 are respectively rotatably connected to the rotating shaft 11 freely and their rotation angles are not restricted, in order to make the first folding scale 2 and the second folding scale 3 keep a 90-degree angle with the main scale 1 and keep their positions fixed after being unfolded, a limiting mechanism is arranged at the positions where the two folding scales are connected to the rotating shaft 11. As Figures 4 to 8 shown, the limiting mechanism specifically includes: a rotating body 8 arranged at the rotating end of the first folding scale 2 / the second folding scale 3. The rotating body 8 is coaxial with the rotating shaft 11 and is integrally formed with the first folding scale 2 / the second folding scale 3. A locking post track groove 12 with a 1 / 4 circular arc is opened on the outer end surface of the rotating body 8. The locking post track groove 12 is arranged away from the axis of the rotating body 8, and the center of its arc coincides with the axis of the rotating shaft 11. Specifically, as Figure 6As shown in the figure, a spherical locking groove 13 that is recessed inward is provided at the end of the locking post track groove 12, and the spherical locking groove 13 is a spherical groove; on the side of the inner side of the folding groove facing the rotating body 8, a shaft seat 9 is fixedly connected, and a locking member is elastically connected to the side of the shaft seat 9 facing the rotating body 8. One end of the locking post 10 enters the locking post track groove 12. When the folding ruler rotates, the rotating body 8 rotates accordingly, while the position of the locking post 10 remains unchanged. At this time, the locking post 10 slides along the locking post track groove 12. When the folding ruler is unfolded to 90 degrees, the spherical locking groove 13 located at the end of the locking post track groove 12 reaches the position where the locking member is located, and the locking post 10 extends outward under the action of elastic force and is inserted into the spherical locking groove 13 to form a limit.

[0042] It should be understood that a spherical locking groove 13 can also be provided at the other end of the locking post track groove 12. In this way, when the folding ruler is folded into the main ruler 1, a limit can also be formed, achieving the same locking effect as the lock catch 7 and further improving its locking force.

[0043] As Figure 7 and Figure 8 As shown in the figure, the shaft seat 9 is a cylindrical block fixedly connected to the inner side of the folding groove. Its center is provided with an opening to accommodate the rotation shaft 11 to enter. At the height position corresponding to the locking post track groove 12 on its end face, a locking post telescopic groove 15 for the locking post 10 to enter is provided. One end of the locking post 10 is a stepped end 17, and a spring 14 is sleeved on the stepped end 17. The other end of the spring 14 extends into the locking member telescopic groove and is fixedly connected to the bottom of the groove, thereby enabling the locking post 10 to be elastically connected to the shaft seat 9.

[0044] In a further optimized solution, the end of the locking post 10 away from the shaft seat 9 is a ball head end 16, and its end face is spherical, forming a fit with the spherical locking groove 13, which is convenient for insertion and withdrawal. It can not only ensure the fixed position after unfolding but also facilitate folding. With a slight movement by hand, the locking post 10 can be separated from the spherical locking groove 13.

[0045] In the above embodiment, both ends of the closed loop line 5 can be fixedly connected to the free ends of the first folding ruler 2 and the second folding ruler 3. However, for the convenience of folding and to ensure that the closed loop line 5 can be automatically straightened when unfolded, at least one end of it is connected to the end of the folding ruler in a retractable manner through the closed loop line winding box 4. Therefore, the free ends of the first folding ruler 2 and / or the second folding ruler 3 are fixedly connected with the closed loop line winding box 4, and one end of the closed loop line 5 is elastically wound in the closed loop line winding box 4.

[0046] In the above embodiment, scales are provided on at least one surface of the main ruler 1, the first folding ruler 2, and the second folding ruler 3.

[0047] It should be understood that in practical applications, in order to ensure that the device has a certain structural strength, the main ruler 1, the first folding ruler 2, and the second folding ruler 3 are all made of stainless steel.

[0048] It should also be understood that the lengths of the main ruler 1, the first folding ruler 2, and the second folding ruler 3 are set according to actual requirements. The lengths of the main ruler 1, the first folding ruler 2, and the second folding ruler 3 can be set to 20 cm to 100 cm, and can enclose a quadrat of 20 cm × 20 cm to 100 cm × 100 cm.

[0049] In some embodiments, the main ruler 1, the first folding ruler 2, and the second folding ruler 3 are all set as retractable board ruler structures. The retractable structure can be realized by conventional means and will not be elaborated here. Using the retractable structure can make the size of the quadrat enclosed by each ruler no longer a fixed value and can be adjusted as needed.

[0050] In some embodiments, the buckle 7 is a "mountain"-shaped elastic sheet fixedly connected to the middle of the folding groove. As Figure 10 and Figure 11 shown, the buckle 7 includes a first locking position 71, a second locking position 72, and an arc-shaped elastic sheet 73. Among them, the arc-shaped elastic sheet 73 is arranged on the opposite side walls of the first locking position 71 and the second locking position 72, and forms elastic extrusion from both sides of the first folding ruler 2 and the second folding ruler 3 to achieve position locking. It should be understood that there are various structures that can realize the limit locking of the first folding ruler 2 and the second folding ruler 3. The buckle 7 in this embodiment is only an implementation manner that is easy to realize.

[0051] Referring to Figure 12 shown, Embodiment 2 of the present invention provides another portable folding device for field quadrat investigation. The difference from Embodiment 1 is that: the limiting mechanism is a limiting piece 6 obliquely supported at the hinged end of the first folding ruler 2 / second folding ruler 3 and the main ruler 1. The limiting piece 6 includes two hinged connecting rods. One ends of the two connecting rods are hinged to each other, and the mutually remote ends of the two connecting rods are respectively hinged to the main ruler 1 and the first folding ruler 2 / second folding ruler 3. The specific structure is as Figure 12 shown.

[0052] The details not elaborated in the present invention are conventional technical means well known to those skilled in the art.

[0053] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention.

[0054] The embodiments described above are only descriptions of the preferred embodiments of the present invention, and do not limit the scope of the present invention. Without departing from the design spirit of the present invention, various deformations and improvements made by those of ordinary skill in the art to the technical solutions of the present invention shall fall within the protection scope determined by the claims of the present invention.

Claims

1. A portable folding device for field quadrat survey, characterized in that Including: A main scale (1) having a folding groove with an open top, and at least one side thereof is provided with scales along the length direction; A first folding scale (2), one end of which is hinged in the groove near one end of the folding groove, and at least one side thereof is provided with scales along the length direction; A second folding scale (3), one end of which is hinged in the groove near the other end of the folding groove, and is arranged in a staggered manner with the first folding scale (2), and at least one side thereof is provided with scales along the length direction; A limiting mechanism is arranged at the positions where the first folding scale (2) and the second folding scale (3) are respectively connected to the folding groove, and is used for forming a limit when the first folding scale (2) and the second folding scale (3) are rotated to be perpendicular to the main scale (1); A lock catch (7) is arranged at the middle position of the folding groove, and is used for locking the first folding scale (2) and the second folding scale (3) after they are folded into the folding groove.

2. The portable field quadrat survey folding device according to claim 1, wherein Rotating shafts (11) are arranged at positions near both ends in the folding groove, and the first folding scale (2) / the second folding scale (3) rotates on the rotating shafts (11); a rotating body (8) protrudes axially along the rotating shaft (11) at the rotating end of the first folding scale (2) / the second folding scale (3), and a locking post track groove (12) with a 1 / 4 arc is formed on the rotating body (8), and the center of the arc of the locking post track groove (12) coincides with the axis of the rotating shaft (11); the limiting mechanism includes a shaft seat (9) fixed on the inner side of the folding groove opposite to the rotating body (8), and a locking post (10) is elastically connected to one side of the shaft seat (9) facing the rotating body (8), one end of the locking post (10) enters the locking post track groove (12), and a spherical locking groove (13) for the end of the locking post (10) to be caught is arranged at the end of the locking post track groove (12).

3. The portable field quadrat survey folding device according to claim 2, wherein A locking post telescopic groove (15) for one end of the locking post (10) to enter is formed on the shaft seat (9); the locking post (10) includes a ball head end (16) and a stepped end (17), the stepped end (17) is connected to a spring (14), the end of the spring (14) away from the locking post (10) is fixed in the locking post telescopic groove (15), and the ball head end (16) cooperates with the locking post track groove (12).

4. The portable field quadrat survey folding device according to claim 1, characterized in that, The limiting mechanism is a limiting piece (6) obliquely supported at the hinged end of the first folding scale (2) / the second folding scale (3) and the main scale (1), and the limiting piece (6) includes two mutually hinged connecting rods, one ends of the two connecting rods are hinged to each other, and the mutually separated ends of the two connecting rods are respectively hinged to the main scale (1) and the first folding scale (2) / the second folding scale (3).

5. The foldable device for portable field quadrat survey according to claim 1, wherein, A closed loop line (5) is connected to the free ends of the first folding scale (2) and the second folding scale (3), and when the first folding scale (2) and the second folding scale (3) are unfolded, the closed loop line (5) is straightened.

6. The portable field quadrat survey folding device according to claim 5, wherein, A closed loop line winding box (4) is fixed to the free end of the first folding scale (2) and / or the second folding scale (3), and one end of the closed loop line (5) is elastically wound in the closed loop line winding box (4).

7. The folding device for portable field quadrat survey according to claim 1, wherein, The buckle (7) is a "mountain"-shaped elastic piece fixedly connected to the middle of the folding groove.

8. The portable field quadrat survey folding device according to claim 1, characterized in that The lengths of the main ruler (1), the first folding ruler (2), and the second folding ruler (3) are equal.

9. The portable field quadrat survey folding device according to claim 8, characterized in that, The main ruler (1), the first folding ruler (2), and the second folding ruler (3) are all made of stainless steel.

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