Watermelon seedling lifting device

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By designing a seedling lifter suitable for watermelon seedlings, the matching structure of the limiting cylinder and seedling shovel is solved, and the problem of watermelon seedlings is easily damaged during the transplant process is achieved, and the safe and convenient transplantation of watermelon seedlings is achieved.

CN222814861UActive Publication Date: 2025-05-02ZHANGJIAKOU XIANGYOU AGRICULTURAL DEVELOPMENT CO LTD

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Patent Information

Application Number: CN202421813754.4
Authority / Receiving Office: CN · China
Patent Type: Utility models(China)
Current Assignee / Owner
Filing Date: 2024-07-30
Publication Date: 2025-05-02
Estimated Expiration: 2034-07-30

AI Technical Summary

Technical Problem

The prior art lacks a seedling lifter specially adapted to watermelon seedling transfer, resulting in watermelon seedlings being easily damaged during the seedling transfer process.

Method used

A watermelon seedling seedling maker is designed, including a grasping structure, seedling maker structure and auxiliary mechanism. By controlling the movement of the limit cylinder up and down, the opening and closing of the upper seedling shovel can be controlled, and the vertical insertion of the lower seedling shovel and the separation of the inner and outer soil, which facilitates the transfer of watermelon seedlings.

Benefits of technology

This seedling grower can effectively protect the roots of watermelon seedlings, avoid damage, and simplify the transplantation process, so that watermelon seedlings can be transplanted safely and conveniently.

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Abstract

The utility model belongs to the technical field of watermelon seedling planting, and particularly relates to a watermelon seedling lifting device which comprises a grabbing structure, a seedling lifting device structure and a lifting mechanism, and the grabbing structure comprises a connecting rod and a grip and is fixedly connected to the lower portion of the connecting rod; the seedling lifting device structurally comprises a sleeve, an upper seedling lifting shovel and a lower seedling lifting shovel, the upper seedling lifting shovel is made of elastic metal, the top end of the upper seedling lifting shovel is fixed to the lower edge of the extension ring, the upper seedling lifting shovel expands outwards from top to bottom, the angle alpha between the upper seedling lifting shovel and the sleeve is larger than 2 degrees and smaller than 15 degrees, and the lower seedling lifting shovel is parallel to the sleeve. The auxiliary mechanism comprises a positioning cylinder, an annular connecting plate and a limiting cylinder, the positioning cylinder sleeves the connecting rod, the limiting cylinder controls opening and closing of the upper seedling lifting shovel through vertical movement, the positioning cylinder and the limiting cylinder are fixedly connected through the annular connecting plate, the positioning cylinder has the freedom degree of vertical movement along the connecting rod, and the lower seedling lifting shovel is vertically inserted into soil. After the watermelon seedlings are inserted into a proper depth without damaging the roots of the watermelon seedlings, the upper seedling lifting shovel is controlled to be closed by a certain angle to enable the lower seedling lifting shovel to incline inwards to dig soil, and seedling lifting is facilitated.

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Description

Technical Field

[0001] The utility model belongs to the technical field of watermelon seedling planting, and particularly relates to a watermelon seedling lifting device. Background Art

[0002] Watermelon seedlings need to be cultivated and grown after being exposed to the sun and soaked. They can be transplanted after 25-30 days of cultivation. For watermelon seedlings, the surface stems and leaves and underground roots of watermelon seedlings are not too large, and there are no hard branches. In particular, the stems and leaves are relatively soft, and the growth direction is irregular. In addition, watermelon seedlings are usually cultivated in greenhouses, which are not suitable for collective lifting with large tools. In order to adapt to watermelon seedlings such as seedlings whose roots and stems and leaves are easily damaged, a watermelon seedling lifter is needed that is not easy to damage the roots and is convenient for lifting seedlings. Utility Model Content

[0003] In view of the problem that there is no seedling lifter specially adapted for transplanting watermelon seedlings in the prior art, the utility model provides a watermelon seedling lifter, which controls the opening and closing of an upper seedling lifter shovel by controlling the upward and downward movement of a limiting cylinder.

[0004] In order to solve the above technical problems, the technical solution adopted by the utility model is: a watermelon seedling lifting device, comprising

[0005] The gripping structure comprises a connecting rod and a handle, wherein the seedling lifter structure is fixedly connected below the connecting rod, and the top of the connecting rod is connected with the handle;

[0006] The seedling lifting device structure includes a sleeve, an upper seedling lifting shovel and a lower seedling lifting shovel. The sleeve includes a cylindrical section and an extension ring. A threaded hole is opened on the top of the cylindrical section and is threadedly connected to the connecting rod by means of a bolt. The extension ring is fixed to the bottom end of the cylindrical section and extends outward. The upper seedling lifting shovel is elastic metal, and the top of the upper seedling lifting shovel is fixed to the lower edge of the extension ring. The upper seedling lifting shovel expands outward from top to bottom and has an angle α with the sleeve, 2°<α<15°. The lower seedling lifting shovel and the upper seedling lifting shovel are an integrated structure, and the lower seedling lifting shovel is parallel to the sleeve.

[0007] The auxiliary mechanism includes a positioning cylinder, an annular connecting plate and a limiting cylinder. The positioning cylinder is mounted on the connecting rod. The limiting cylinder is a straight cylinder mounted on the outer side of the upper seedling lifting shovel. The limiting cylinder controls the opening and closing of the upper seedling lifting shovel by moving up and down. The positioning cylinder and the limiting cylinder are fixedly connected by means of the annular connecting plate. The positioning cylinder has the freedom to move up and down along the connecting rod.

[0008] After the seedlings are inserted to a suitable depth without damaging the roots of the seedlings, the upper seedling shovel is controlled to close at a certain angle so that the lower seedling shovel is tilted inwards to dig the soil, which is convenient for lifting the seedlings.

[0009] Preferably, the upper end of the connecting rod is provided with an outward semi-annular protrusion, the top end of the positioning cylinder is provided with a limiting arc block cooperating with the semi-annular protrusion, and the positioning cylinder has the freedom to rotate around the connecting rod.

[0010] Before lifting the seedlings, pull the positioning cylinder upward and rotate the positioning cylinder so that the limiting arc block of the rotating positioning cylinder contacts and limits the semi-circular protrusion to jam the positioning cylinder. The staff presses the handle downward to insert the lower seedling lifting shovel into the soil outside the watermelon seedlings. After the lower seedling lifting shovel enters the appropriate depth, the staff rotates the positioning cylinder to separate the limiting arc block from the semi-circular protrusion and no longer be limited. The positioning cylinder is held downward to allow the limiting cylinder to retract the upper seedling lifting shovel from the outside to the inside.

[0011] Preferably, 2-4 upper seedling lifting shovels are arranged in an array around the circumference of the extension ring.

[0012] The upper seedling shovels can be closed toward the center from different directions when the limiting cylinder moves downward according to the number. The circular array makes the upper seedling shovels evenly distributed around the seedlings, so that the roots of the dug seedlings are located in the middle of the soil block, and the roots are not easily damaged.

[0013] Preferably, the upper seedling lifting shovel is made of spring steel, the upper seedling lifting shovel and the lower seedling lifting shovel are an integrated structure, and the connection is a rounded structure.

[0014] Spring steel has high elastic limit and fatigue limit, sufficient plasticity and toughness, and can shrink toward the middle as the limit tube moves downward, and rebound to the expanded state as the limit tube moves upward.

[0015] Preferably, the angle between the upper seedling lifting shovel and the sleeve is 3°<α<10°.

[0016] Preferably, a rubber buffer layer is bonded to the inner surface of the bottom end of the limiting cylinder, and the rubber buffer layer is covered with an ultra-high molecular weight polyethylene wear-resistant layer, and the ultra-high molecular weight polyethylene wear-resistant layer is in contact with and cooperates with the upper seedling lifting shovel.

[0017] The ultra-high molecular weight polyethylene wear-resistant layer is in direct contact with the upper seedling lifting shovel when the limiting cylinder moves up and down, thereby improving the wear resistance. The rubber buffer layer can play a buffering effect when the ultra-high molecular weight polyethylene wear-resistant layer squeezes the upper seedling lifting shovel from outside to inside.

[0018] Preferably, the handle is perpendicular to the connecting rod, a threaded hole is provided at the bottom of the handle, an external thread is processed at the top of the connecting rod, and the handle is threadedly connected to the connecting rod.

[0019] Preferably, a non-slip rubber layer is provided on the handle.

[0020] The rubber layer makes it easier for workers to grip and avoid slipping.

[0021] The beneficial effects of the utility model are as follows: the positioning cylinder is controlled to drive the limiting cylinder to move up and down, and the limiting cylinder moves downward to squeeze the upper seedling lifting shovel inward, so that the upper seedling lifting shovel tilts inward, and then the originally vertical lower seedling lifting shovel tilts and digs toward the roots of the watermelon seedlings, thereby realizing the function of digging seedlings, and separating the soil at the roots of the watermelon seedlings from the surrounding soil, making it easy to dig out. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a structural schematic diagram of a watermelon seedling lifting device in the embodiment when the limiting cylinder is at the uppermost end;

[0023] Figure 2 It is a schematic diagram of the explosion structure of a watermelon seedling lifting device when the limiting cylinder is at the uppermost end in the embodiment;

[0024] Figure 3 This is a structural schematic diagram of a watermelon seedling lifting device in the embodiment when the limiting cylinder is at the lowermost end;

[0025] Figure 4 It is a schematic diagram of the explosion structure of a watermelon seedling lifting device when the limiting cylinder is at the lowermost end in the embodiment;

[0026] Figure 5 It is a structural schematic diagram of a watermelon seedling lifter structure in the embodiment;

[0027] Figure 6 It is a structural schematic diagram of an auxiliary mechanism of a watermelon seedling lifting device in the embodiment;

[0028] Figure 7 This is a schematic diagram of the structure of a handle of a watermelon seedling lifting device in the embodiment;

[0029] In the figure: 1. gripping structure; 101. connecting rod; 102. grip; 103. semi-circular protrusion; 2. seedling lifter structure; 201. sleeve; 202. upper seedling lifter shovel; 203. lower seedling lifter shovel; 204. cylindrical section; 205. extension ring; 3. auxiliary mechanism; 301. positioning cylinder; 302. annular connecting plate; 303. limiting cylinder; 304. limiting arc block; 4. rubber buffer layer; 5. ultra-high molecular weight polyethylene wear-resistant layer; 6. threaded hole; 7. anti-slip rubber layer. DETAILED DESCRIPTION

[0030] In order to make the purpose, technical solution and advantages of the utility model clearer, the utility model is further described in detail below in combination with specific implementation methods and with reference to the accompanying drawings. It should be understood that these descriptions are only exemplary and are not intended to limit the scope of the utility model. In addition, in the following description, the description of well-known structures and technologies is omitted to avoid unnecessary confusion of the concept of the utility model.

[0031] Specific implementation examples Figure 1 , 2 , 3, 4, 5, 6 and 7, a watermelon seedling lifting device, comprising

[0032] The gripping structure 1 includes a connecting rod 101 and a handle 102. The seedling lifter structure 2 is fixedly connected below the connecting rod 101. The top of the connecting rod 101 is connected to the handle 102.

[0033] The seedling lifting device structure 2 includes a sleeve 201, an upper seedling lifting shovel 202 and a lower seedling lifting shovel 203. The sleeve 201 includes a cylindrical section 204 and an extension ring 205. A threaded hole 6 is opened on the top of the cylindrical section 204, which is threadedly connected to the connecting rod 101 by means of bolts. The extension ring 205 is fixed to the bottom end of the cylindrical section 204 and extends outward. The upper seedling lifting shovel 202 is elastic metal, and the top of the upper seedling lifting shovel 202 is fixed to the lower edge of the extension ring 205. The upper seedling lifting shovel 202 expands outward from top to bottom, and the angle with the sleeve 201 is α, 2°<α<15°, and the lower seedling lifting shovel 203 is an integrated structure with the upper seedling lifting shovel 202, and the lower seedling lifting shovel 203 is parallel to the sleeve 201;

[0034] The auxiliary mechanism 3 includes a positioning cylinder 301, an annular connecting plate 302 and a limiting cylinder 303. The positioning cylinder 301 is mounted on the connecting rod 101. The limiting cylinder 303 is a straight cylinder mounted on the outer side of the upper seedling lifting shovel 202. The limiting cylinder 303 controls the opening and closing of the upper seedling lifting shovel 202 by moving up and down. The positioning cylinder 301 and the limiting cylinder 303 are fixedly connected by means of the annular connecting plate 302. The positioning cylinder 301 has the freedom to move up and down along the connecting rod 101.

[0035] like Figure 1 , 2As shown in FIGS. 3 and 4 , the upper end of the connecting rod 101 is provided with an outward semi-circular protrusion 103 , and the top end of the positioning cylinder 301 is provided with a limiting arc block 304 that cooperates with the semi-circular protrusion 103 , and the positioning cylinder 301 has the freedom to rotate around the connecting rod 101 .

[0036] like Figure 1 , 2 As shown in FIGS. 3 and 4 , the upper seedling lifting shovels 202 are arranged in a circular array around the extension ring 205 in numbers 2 to 4.

[0037] In order to reduce stress concentration and extend service life, the upper seedling lifting shovel 202 is made of spring steel. The upper seedling lifting shovel 202 and the lower seedling lifting shovel 203 are an integrated structure, and the connection is a rounded structure.

[0038] The angle between the upper seedling lifting shovel 202 and the sleeve 201 is 3°<α<10°.

[0039] like Figure 5 As shown, a rubber buffer layer 4 is bonded to the inner surface of the bottom end of the limiting cylinder 303 , and the rubber buffer layer 4 is covered with an ultra-high molecular weight polyethylene wear-resistant layer 5 , and the ultra-high molecular weight polyethylene wear-resistant layer 5 is in contact with the upper seedling lifting shovel 202 .

[0040] like Figure 1 , 2 As shown in , 3, 4 and 7, the handle 102 is perpendicular to the connecting rod 101, a threaded hole 6 is opened at the bottom of the handle 102, and an external thread is processed on the top of the connecting rod 101, and the handle 102 is threadedly connected to the connecting rod 101.

[0041] like Figure 1 , 2 As shown in FIGS. 3 , 4 and 7 , the handle 102 is provided with an anti-slip rubber layer 7 .

[0042] Working principle: to transplant watermelon seedlings, first move the auxiliary mechanism 3 to the uppermost end of the connecting rod 101 so that the limiting cylinder 303 does not interfere with the upper seedling shovel 202. The upper seedling shovel 202 is in the shape of a funnel that tilts outward from top to bottom. The lower seedling shovel 203 is approximately perpendicular to the soil surface, making it easier for the lower seedling shovel 203 to be inserted into the soil. Hold the handle 102 firmly to squeeze the seedling lifter structure 2 downward so that the lower seedling shovel 203 drops to a suitable depth. Hold the positioning cylinder 301 to drive the limiting cylinder 303 to move downward. During the downward movement of the limiting cylinder 303, the upper seedling shovel 202 that tilts outward is retracted, and the lower seedling shovel 203 moves with the upper seedling shovel The inward movement of the seedling lifting shovel 202 changes from vertical to inward inclined direction, so as to dig the soil near the watermelon seedlings, thereby separating the soil inside and outside the lower seedling lifting shovel 203, and pulling the handle 102 to pull the soil with the watermelon seedlings upward, and controlling the opening and closing of the upper seedling lifting shovel 202 by moving the height of the limiting cylinder 303, thereby controlling the angle of the lower seedling lifting shovel 203, and facilitating the vertical insertion of the lower seedling lifting shovel 203 into the soil. After the insertion is at a suitable depth without damaging the roots of the watermelon seedlings, controlling the limiting cylinder 303 to close the upper seedling lifting shovel 202 at a certain angle, so that the lower seedling lifting shovel 203 is tilted inward to dig the soil, which is convenient for lifting the seedlings.

[0043] It should be understood that the above specific embodiments of the present invention are only used to illustrate or explain the principles of the present invention, and do not constitute a limitation on the present invention. Therefore, any modifications, equivalent substitutions, improvements, etc. made without departing from the spirit and scope of the present invention should be included in the protection scope of the present invention. In addition, the claims attached to the present invention are intended to cover all changes and modifications that fall within the scope and boundaries of the attached claims, or the equivalent forms of such scope and boundaries.

Claims

1. A watermelon seedling lifting device, characterized in that: include The gripping structure (1) comprises a connecting rod (101) and a gripping handle (102), the seedling lifter structure (2) being fixedly connected below the connecting rod (101), and the top end of the connecting rod (101) being connected to the gripping handle (102); The seedling lifting device structure (2) comprises a sleeve (201), an upper seedling lifting shovel (202) and a lower seedling lifting shovel (203), wherein the sleeve (201) comprises a cylindrical section (204) and an extension ring (205), wherein a threaded hole (6) is provided on the upper side of the cylindrical section (204) and is threadedly connected to a connecting rod (101) by means of a bolt, wherein the extension ring (205) is fixed to the bottom end of the cylindrical section (204) and extends outwards, wherein the upper seedling lifting shovel (202) is made of elastic metal, wherein the top end of the upper seedling lifting shovel (202) is fixed to the lower edge of the extension ring (205), wherein the upper seedling lifting shovel (202) expands outwards from top to bottom and has an angle α with the sleeve (201), wherein 2°<α<15°, and wherein the lower seedling lifting shovel (203) and the upper seedling lifting shovel (202) are an integrated structure, and the lower seedling lifting shovel (203) is parallel to the sleeve (201); The auxiliary mechanism (3) comprises a positioning cylinder (301), an annular connecting plate (302) and a limiting cylinder (303); the positioning cylinder (301) is sleeved on the connecting rod (101); the limiting cylinder (303) is a straight cylinder sleeved on the outside of the upper seedling lifting shovel (202); the limiting cylinder (303) controls the opening and closing of the upper seedling lifting shovel (202) by moving up and down; the positioning cylinder (301) and the limiting cylinder (303) are fixedly connected by means of the annular connecting plate (302); and the positioning cylinder (301) has the freedom to move up and down along the connecting rod (101).

2. A watermelon seedling lifting device according to claim 1, characterized in that: The upper end of the connecting rod (101) is provided with an outward semi-annular protrusion (103), the top end of the positioning cylinder (301) is provided with a limiting arc block (304) that cooperates with the semi-annular protrusion (103), and the positioning cylinder (301) has the freedom to rotate around the connecting rod (101).

3. A watermelon seedling lifting device according to claim 2, characterized in that: The upper seedling lifting shovels (202) are arranged in a circumferential array around the extension ring (205) in a number of 2 to 4.

4. The watermelon seedling lifting device according to claim 3, characterized in that: The upper seedling lifting shovel (202) is made of spring steel, and the upper seedling lifting shovel (202) and the lower seedling lifting shovel (203) are an integrated structure, and the connection portion is a rounded structure.

5. The watermelon seedling lifting device according to claim 1, characterized in that: The angle between the upper seedling lifting shovel (202) and the sleeve (201) is 3°<α<10°.

6. The watermelon seedling lifting device according to claim 1, characterized in that: A rubber buffer layer (4) is bonded to the inner surface of the bottom end of the limiting cylinder (303), and the rubber buffer layer (4) is covered with an ultra-high molecular weight polyethylene wear-resistant layer (5), and the ultra-high molecular weight polyethylene wear-resistant layer (5) is in contact with the upper seedling lifting shovel (202).

7. The watermelon seedling lifting device according to claim 1, characterized in that: The handle (102) is perpendicular to the connecting rod (101), a threaded hole (6) is provided at the bottom of the handle (102), an external thread is processed at the top of the connecting rod (101), and the handle (102) and the connecting rod (101) are threadedly connected.

8. The watermelon seedling lifting device according to claim 7, characterized in that: The handle (102) is provided with an anti-slip rubber layer (7).