Handheld plant punching sampler

Abstract

The utility model discloses a handheld type plant punching sampler which comprises a base and a first pressing plate installed on one side of the top of the base in a hinged mode, the bottom of the first pressing plate is connected with a hinged base in a sliding mode, a tool bit is installed on the hinged base in a hinged mode, and a limiting hole used for limiting the tool bit is formed in the top of the base. Limiting holes are formed in the first pressing plate, the tool bits are movably inserted in the limiting holes, mounting bases are fixedly connected to the opposite sides of the first pressing plate and the base, mounting cylinders are movably arranged on the outer sides of the two mounting bases in a sleeving mode, a pressure spring is fixedly connected between the two mounting cylinders, and clamping holes are formed in the mounting cylinders. According to the utility model, through the cooperative use of the mounting seat, the mounting cylinder, the clamping hole and the clamping assembly, the pressure spring can be clamped and mounted between the pressing plate I and the base, so that when the pressure spring is subjected to elastic fatigue and insufficient elasticity, a user can conveniently and quickly replace the pressure spring, the maintenance convenience of the sampler is improved, and the service life of the sampler is favorably prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of plant punching samplers, in particular to a handheld plant punching sampler. Background Technique

[0002] In scientific research for anatomical, physiological, genetic and other studies on plants, by punching and sampling on plant leaves, tissues or cells in a specific area can be obtained, so as to conduct various analyses and studies.

[0003] For example, the Chinese utility model patent with the application number: 202120910603.0 discloses a handheld plant leaf sampler, which includes a base and an upper pressing plate hinged to one end of the base. The bottom surface of the other end of the upper pressing plate is connected with a cutter head... The limiting rod is slidably connected to the base, and the limiting rod is connected with a return spring, and the other end of the return spring is connected with the base. The device has a simple structure and reasonable design, can complete the cutting and collection of leaves and automatic storage, and improves work efficiency.

[0004] After the above-mentioned patent punches and samples the leaves by driving the cutter head with the downward pressure of the pressing plate, the pressing plate can be driven to reset through the setting of the compression spring. However, after long-term use, the compression spring is prone to elastic fatigue, that is, the elastic force decreases, resulting in a poor reset effect on the pressing plate. Furthermore, when the elastic force of the compression spring is poor, it needs to be replaced. However, the above-mentioned patent cannot conveniently replace the compression spring, and there is no measurement and positioning mechanism in the above-mentioned patent. When punching and sampling the leaves, it is not convenient for the user to accurately position the punching and sampling position of the leaves, there are certain limitations, and it needs to be improved. Content of the Utility Model

[0005] The purpose of the utility model is to solve the deficiencies existing in the prior art, and to propose a handheld plant punching sampler.

[0006] To achieve the above object, the utility model adopts the following technical solutions: A handheld plant punching sampler, comprising a base and a first pressing plate hingedly installed on one side of the top of the base. A hinge seat is slidably connected to the bottom of the first pressing plate. A cutter head is hingedly installed on the hinge seat. A limiting hole for limiting the cutter head is opened on the top of the base. The cutter head is movably inserted into the limiting hole. Mounting seats are fixedly connected to the opposite sides of the first pressing plate and the base. Mounting cylinders are movably sleeved on the outer sides of the two mounting seats. A compression spring is fixedly connected between the two mounting cylinders. A clamping hole is opened on the mounting cylinder. A device groove is opened on the mounting seat at a position corresponding to the clamping hole. A clamping assembly is arranged inside the device groove. A rectangular cavity is opened on one side of the base, and a threaded hole is opened on the front of the base. A locking bolt is threadedly connected inside the threaded hole. A positioning frame is sleeved on the outer surface of the locking bolt, and the positioning frame is located inside the rectangular cavity. A scale is arranged on the front of the base corresponding to the positioning frame.

[0007] As a further description of the above technical solution: A through hole is opened at the position corresponding to the limiting hole at the bottom of the inner wall of the rectangular cavity.

[0008] As a further description of the above technical solution: A T-shaped placement groove is opened on one side of the base.

[0009] As a further description of the above technical solution: The size of the limiting hole is adapted to the size of the cutter head.

[0010] As a further description of the above technical solution: The clamping assembly includes a clamping spring fixedly installed on the inner wall of the device groove. The other end of the clamping spring is fixedly connected to a clamping column. The other end of the clamping column is embedded in the clamping hole.

[0011] As a further description of the above technical solution: The size of the clamping column is respectively adapted to the device groove and the clamping hole.

[0012] As a further description of the above technical solution: A labor-saving lever structure is arranged between the base and the first pressing plate.

[0013] As a further description of the above technical solution: The labor-saving lever structure includes a second pressing plate and a hinge. One end of the second pressing plate is fixedly connected with a lug. The lower end of the lug is hinged to the base. A position above the lug is hinged to one end of the hinge. The other end of the hinge is hinged to the pressing plate.

[0014] The utility model has the following beneficial effects:

[0015] 1. Compared with the prior art, for this handheld plant punching sampler, through the combined use of the mounting base, mounting cylinder, clamping holes and clamping components, the compression spring can be clamped and installed between the first pressing plate and the base. When the compression spring shows elastic fatigue and insufficient elastic force, it is convenient for the user to quickly replace the compression spring, improving the convenience of sampler maintenance and being beneficial to extending the service life of the sampler.

[0016] 2. Compared with the prior art, for this handheld plant punching sampler, by screwing the locking bolt to move it outwards from the threaded hole, the locking and fixing of the positioning frame is released. Then, manually move the positioning frame and, in cooperation with the scale, move the positioning frame to an appropriate position. The distance between the positioning frame and the through hole is the distance from the leaf punching position to the leaf edge position, thus facilitating the quick positioning of the leaf punching position during subsequent punching and sampling operations and improving the efficiency of punching and sampling.

[0017] 3. Compared with the prior art, for this handheld plant punching sampler, through the setting of the labor-saving lever structure, the first pressing plate and the second pressing plate are connected by a hinge to form a lever, such that when the second pressing plate is stressed, it acts on the first pressing plate through the hinge. Due to the effect of the hinge lever, it is more labor-saving during punching and sampling. Description of the Drawings

[0018] Figure 1 is a three-dimensional schematic diagram of the overall structure of a handheld plant punching sampler proposed by the present utility model;

[0019] Figure 2 is another three-dimensional schematic diagram of the overall structure of a handheld plant punching sampler proposed by the present utility model;

[0020] Figure 3 is an exploded view of structures such as the mounting base, mounting cylinder and clamping components of a handheld plant punching sampler proposed by the present utility model;

[0021] Figure 4 is an exploded view of structures such as the positioning frame and locking bolt of a handheld plant punching sampler proposed by the present utility model;

[0022] Figure 5 is a schematic diagram of the labor-saving lever structure of a handheld plant punching sampler proposed by the present utility model.

[0023] Legend Explanation:

[0024] 1. Base; 2. First pressing plate; 3. Hinge seat; 4. Tool bit; 5. Limiting hole; 6. Mounting seat; 7. Mounting cylinder; 8. Compression spring; 9. Clamping hole; 10. Device groove; 11. Rectangular cavity; 12. Threaded hole; 13. Locking bolt; 14. Positioning frame; 15. Scale; 16. Through hole; 17. T-shaped placement groove; 18. Clamping spring; 19. Clamping post; 20. Second pressing plate; 21. Hinge; 22. Lug. Detailed implementation manner

[0025] 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.

[0026] Example 1: Refer to Figures 1-4 As shown, a handheld plant punching and sampling device provided by the present invention includes a base 1 and a first pressing plate 2 hingedly installed on one side of the top of the base 1. A T-shaped placement groove 17 is opened on one side of the base 1. A hinge seat 3 is slidably connected to the bottom of the first pressing plate 2. A tool bit 4 is hingedly installed on the hinge seat 3. A limiting hole 5 for limiting the tool bit 4 is opened on the top of the base 1. The tool bit 4 is movably inserted into the limiting hole 5. The size of the limiting hole 5 is adapted to the size of the tool bit 4. Mounting seats 6 are fixedly connected to the opposite sides of the first pressing plate 2 and the base 1. Mounting cylinders 7 are movably sleeved on the outer sides of the two mounting seats 6. A compression spring 8 is fixedly connected between the two mounting cylinders 7. A clamping hole 9 is opened on the mounting cylinder 7. A device groove 10 is opened on the mounting seat 6 at a position corresponding to the clamping hole 9. A clamping assembly is arranged inside the device groove 10. A rectangular cavity 11 is opened on one side of the base 1. A threaded hole 12 is opened on the front of the base 1. A locking bolt 13 is threadedly connected inside the threaded hole 12. A positioning frame 14 is sleeved on the outer surface of the locking bolt 13. The positioning frame 14 is located inside the rectangular cavity 11. A scale 15 is provided on the front of the base 1 at a position corresponding to the positioning frame 14. A through hole 16 is opened at the bottom of the inner wall of the rectangular cavity 11 at a position corresponding to the limiting hole 5;

[0027] By the combined use of the mounting seat 6, the mounting cylinder 7, the clamping hole 9 and the clamping assembly, the compression spring 8 can be clamped and installed between the first pressing plate 2 and the base 1. When the compression spring 8 shows elastic fatigue and insufficient elastic force, it is convenient for the user to quickly replace the compression spring 8, improving the convenience of the maintenance of the sampling device and being beneficial to improving the service life of the sampling device;

[0028] By screwing the locking bolt 13 to move it outward from the threaded hole 12, the locking and fixing of the positioning frame 14 is released. Then, manually move the positioning frame 14 and cooperate with the scale 15 to move the positioning frame 14 to an appropriate position. The distance between the positioning frame 14 and the through hole 16 is the distance from the punching position of the blade to the edge position of the blade, which facilitates the rapid positioning of the punching position of the blade during subsequent punching and sampling operations and improves the efficiency of punching and sampling.

[0029] The clamping assembly includes a clamping spring 18 fixedly installed on the inner wall of the device slot 10. The other end of the clamping spring 18 is fixedly connected to a clamping column 19. The other end of the clamping column 19 is embedded in the clamping hole 9. The dimensions of the clamping column 19 are adapted to the device slot 10 and the clamping hole 9 respectively.

[0030] Working principle: When using this sampler to punch and sample plant leaves, the user first adjusts the position of the positioning frame 14 according to the position where the leaves need to be punched and sampled (i.e., the distance from the punching and sampling position to the edge of the leaf). Hold the locking bolt 13 and screw it to move it outward from the threaded hole 12, thereby releasing the locking and fixing of the positioning frame 14. Then, the user manually moves the positioning frame 14 and cooperates with the scale 15 to move the positioning frame 14 to an appropriate position. The distance between the positioning frame 14 and the through hole 16 is the distance from the punching position of the blade to the edge position of the blade, which facilitates the rapid positioning of the punching position of the blade during subsequent punching and sampling operations. After the position of the positioning frame 14 is adjusted, screw the locking bolt 13 again to move it inward into the threaded hole 12 to achieve the locking and fixing of the positioning frame 14;

[0031] Then, the user places the centrifuge tube for sample collection into the T-shaped placement groove 17, and then places the leaf to be punched and sampled in the rectangular cavity 11, and makes the edge of the leaf abut against the positioning frame 14. Then, press down the first pressing plate 2 to drive the cutter head 4 to move downward to punch and sample the leaf, and the first pressing plate 2 moves downward to compress the compression spring 8 to make it in a compressed state. After punching and sampling, release the first pressing plate 2, and the elastic force of the compression spring 8 pushes the first pressing plate 2 to reset;

[0032] When the compression spring 8 is used for a long time and elastic fatigue or insufficient elastic force occurs, the user can manually or use an auxiliary tool to press the clamping post 19 to make it exit the clamping hole 9, release the limit fixation of the installation tube 7, and then move the installation tube 7 to make it separate from the installation seat 6, so as to realize the removal of the installation tube 7. Similarly, when the installation tubes 7 fixedly connected at both ends of the compression spring 8 are removed, the compression spring 8 is removed. Conversely, the clamping post 19 is first pressed into the device groove 10, and then the installation tube 7 is sleeved on the installation seat 6, and the clamping post 19 is relative to the clamping hole 9. The elastic force of the clamping spring 18 pushes the clamping post 19 to be embedded in the clamping hole 9, so as to realize the limit fixation of the installation tube 7, and the installation of the compression spring 8 can be realized. The operation is simple and convenient, which is convenient for the user to quickly replace the compression spring 8, improves the convenience of sampler maintenance, and is conducive to improving the service life of the sampler.

[0033] Example 2: Reference Figure 5 As shown, this embodiment is basically the same as the previous embodiment, except that a force-saving lever structure is provided between the base 1 and the pressure plate 1 2; the force-saving lever structure includes a pressure plate 20 and a hinge 21, one end of the pressure plate 20 is fixedly connected to a lug 22, the lower end of the lug 22 is hinged to the base 1, the upper position of the lug 22 is hinged to one end of the hinge 21, and the other end of the hinge 21 is hinged to the pressure plate;

[0034] By setting up the labor-saving lever structure, the pressing plate 1 2 and the pressing plate 2 20 are connected by the hinge 21 to form a lever, so that the pressing plate 2 20 acts on the pressing plate 1 2 through the hinge 21 after being subjected to force. Due to the lever action of the hinge 21, it is more labor-saving when punching and sampling.

[0035] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent replacements for some of the technical features therein. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A handheld plant punching sampler, comprising a base (1) and a first pressing plate (2) hingedly installed on one side of the top of the base (1), characterized in that: A hinge seat (3) is slidably connected to the bottom of the first pressing plate (2). A cutter head (4) is hingedly installed on the hinge seat (3). A limiting hole (5) for limiting the cutter head (4) is formed in the top of the base (1). The cutter head (4) is movably inserted into the limiting hole (5). Mounting seats (6) are fixedly connected to the opposite sides of the first pressing plate (2) and the base (1). Mounting cylinders (7) are movably sleeved on the outer sides of the two mounting seats (6). A compression spring (8) is fixedly connected between the two mounting cylinders (7). A clamping hole (9) is formed in the mounting cylinder (7). A device groove (10) is formed in the mounting seat (6) corresponding to the position of the clamping hole (9). A clamping assembly is arranged inside the device groove (10). A rectangular cavity (11) is formed in one side of the base (1), and a threaded hole (12) is formed in the front of the base (1). A locking bolt (13) is threadedly connected inside the threaded hole (12). A positioning frame (14) is sleeved on the outer surface of the locking bolt (13), and the positioning frame (14) is located inside the rectangular cavity (11). A scale (15) is arranged on the front of the base (1) corresponding to the position of the positioning frame (14).

2. A handheld plant punch sampler according to claim 1, characterized in that: A through hole (16) is formed in the bottom of the inner wall of the rectangular cavity (11) corresponding to the position of the limiting hole (5).

3. A handheld plant punching sampler according to claim 1, characterized in that: A T-shaped placement groove (17) is formed in one side of the base (1).

4. The hand-held plant punching sampler according to claim 1, characterized in that: The size of the limiting hole (5) is adaptively set to the size of the cutter head (4).

5. The hand-held plant punching sampler according to claim 1, characterized in that: The clamping assembly includes a clamping spring (18) fixedly installed on the inner wall of the device groove (10). The other end of the clamping spring (18) is fixedly connected to a clamping column (19). The other end of the clamping column (19) is embedded in the clamping hole (9).

6. The handheld plant punch sampler according to claim 5, characterized in that: The size of the clamping column (19) is adaptively set to the device groove (10) and the clamping hole (9) respectively.

7. A hand-held plant punching sampler according to claim 1, characterized in that: A labor-saving lever structure is arranged between the base (1) and the first pressing plate (2).

8. A hand-held plant punching sampler according to claim 7, characterized in that: The labor-saving lever structure includes a second pressing plate (20) and a hinge (21). One end of the second pressing plate (20) is fixedly connected to a lug (22). The lower end of the lug (22) is hinged to the base (1). A position above the lug (22) is hinged to one end of the hinge (21). The other end of the hinge (21) is hinged to the pressing plate.

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