Distance fixing device for well cellar transplanting of tobacco seedlings

Abstract

The utility model belongs to the technical field of crop transplanting distance fixing, and particularly discloses a distance fixing device for tobacco seedling well cellar transplanting, which comprises a rack, telescopic shafts are respectively clamped at two ends of a connecting shaft of the rack in a sliding manner, the tail ends of the telescopic shafts are respectively connected with the centers of positioning wheels through bearings, and the upper parts of two ends of the connecting shaft are also in threaded connection with limiting bolts; the distance between the two positioning wheels is adjusted; connecting holes in the radius direction are formed in the arc surface of the positioning wheel at equal intervals, and connecting columns are mounted in the connecting holes; the end, close to the circle center of the positioning wheel, of the connecting column is provided with a sliding column which is connected with the sliding groove in a matched mode, the end, away from the circle center of the positioning wheel, of the connecting column is connected with a tensioning arc block, and the arc face of the tensioning arc block is in threaded connection with a positioning drill. The outer side end face of the positioning wheel is further in threaded connection with an adjusting disc, penetrating arc-shaped grooves corresponding to the sliding columns are formed in the adjusting disc, the arc-shaped grooves of the adjusting disc are rotated to push the sliding columns to move in the sliding grooves so as to adjust stretching and retracting of the tensioning arc blocks, and the distance between the positioning drills can be adjusted.

Description

Technical Field

[0001] This utility model belongs to the field of crop transplanting spacing technology, specifically relating to a spacing device for transplanting tobacco seedlings in a well cellar. Background Technology

[0002] Flue-cured tobacco is one of my country's important economic crops, with a large planting area. In the tobacco planting process, to ensure a high survival rate, tobacco seedlings need to be cultivated in seedling sheds before being transplanted to the tobacco fields. With the development of transplanting technology, seedling well-cellar transplanting has become the mainstream method. Its core principle is to construct appropriately sized wells on the ridges, transplant seedlings of suitable age into the wells, and keep the seedlings in a relatively warm and moist environment, thereby promoting early and rapid growth. It also allows for earlier transplanting and facilitates the later maturation of tobacco leaves in the field.

[0003] Maintaining appropriate plant spacing is crucial for the growth and development of tobacco seedlings during the transplanting process in seedbeds. However, many flue-cured tobacco growing areas are mountainous, making it difficult to perform mechanized operations across multiple planting processes. This necessitates the use of manual hole punchers to create holes in the seedbeds. Manual hole punching is inefficient and inaccurate for marking the transplanting spacing. Therefore, it is necessary to pre-position the plant spacing using a spacing device. However, existing spacing devices can only provide fixed spacing and cannot flexibly adjust the spacing according to different soil conditions. Furthermore, while some existing spacing devices feature dual-wheel positioning, the distance between the two wheels is fixed, while the row spacing between adjacent ridges varies in different planting environments, resulting in a lack of overall adaptability. Utility Model Content

[0004] To solve the above-mentioned technical problems, this utility model designs a spacing device for transplanting tobacco seedlings in a well cellar, which can flexibly adjust the plant spacing according to the conditions of the planting field when transplanting tobacco seedlings, and can adjust the distance between the two positioning wheels according to the actual row spacing of the two planting ridges in the planting field, so as to mark the transplanting spacing of the two planting ridges at the same time.

[0005] The present invention relates to a spacing device for transplanting tobacco seedlings in a well cellar, comprising a frame, wherein the frame includes a connecting shaft, and telescopic shafts are slidably engaged at both ends of the connecting shaft. The ends of the telescopic shafts are connected to the center of a positioning wheel via bearings. Limit bolts are also threadedly connected to the upper parts of both ends of the connecting shaft. An upwardly inclined rod is also connected to the middle of the connecting shaft, and a handle is connected to the top of the inclined rod.

[0006] The positioning wheel has equidistant connecting holes along the radial direction on its arc surface, and connecting posts are installed in the connecting holes. The outer end face of the positioning wheel has a sliding groove corresponding to the connecting post. The end of the connecting post near the center of the positioning wheel is provided with a sliding post that mates with the sliding groove. The end of the connecting post away from the center of the positioning wheel is connected to a tensioning arc block. A positioning drill is threaded onto the arc surface of the tensioning arc block. An adjusting disc is also threaded onto the outer end face of the positioning wheel. The adjusting disc has through arc-shaped grooves corresponding to each sliding post. Rotating the adjusting disc causes the arc-shaped grooves to push the sliding posts to move within the grooves to adjust the common extension and contraction of the tensioning arc blocks, thereby adjusting the distance between the positioning drills.

[0007] The connecting holes are equidistantly opened on the arc surface of the positioning wheel, and six connecting posts are also set accordingly. Each connecting post is connected to a tensioning arc block, and each tensioning arc block is threadedly connected to a positioning drill.

[0008] A vertical telescopic rod is also connected downwards to the middle of the connecting shaft, and a wheel frame is connected to the end of the vertical telescopic rod. An auxiliary wheel is connected inside the wheel frame.

[0009] The vertical telescopic rod includes a sleeve connected to the connecting shaft, an inner rod connected inside the sleeve, and a spring connection between the inner rod and the inner end face of the sleeve. The end of the inner rod is connected to a wheel frame.

[0010] The connecting column and the telescopic shaft are also equipped with scales.

[0011] The beneficial effects of this utility model are:

[0012] Compared with existing technologies, the spacing device for transplanting tobacco seedlings in a well-dwelling system of this invention uses a rotating adjusting disc threadedly connected to the positioning wheel. The arc-shaped groove of the adjusting disc pushes a sliding column to move within the groove, adjusting the simultaneous extension and retraction of the tensioning arc blocks. During the extension and retraction of the tensioning arc blocks, the arc length distance between the positioning drills is adjusted, allowing for flexible adjustment of the spacing according to the suitable plant spacing for different planting fields. Then, during the rolling of the positioning wheel, the positioning drills mark the transplanting plant spacing. Furthermore, during the adjustment process, the threaded connection between the adjusting disc and the positioning wheel can self-lock and fix the adjusted positioning distance. Simultaneously, with the connection between the telescopic shaft and the connecting shaft, the distance between the two positioning wheels can be adjusted, thereby allowing for adjustment of the distance between the two positioning wheels according to the actual row spacing of the two planting ridges in the planting field, achieving simultaneous transplanting spacing marking on both planting ridges. Attached Figure Description

[0013] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments are briefly introduced below.

[0014] Figure 1 This is a schematic diagram of the overall structure of the distance-fixing device in the embodiment.

[0015] Figure 2This is a schematic diagram of the overall structure of the positioning wheel in the embodiment.

[0016] Figure 3 This is a schematic diagram of the positioning wheel without an adjustment disc in the embodiment.

[0017] Figure 4 This is a schematic diagram of the unfolding process of the tensioned arc block in the embodiment.

[0018] Figure 5 This is a schematic diagram of the rack structure in the embodiment.

[0019] Figure 6 This is a schematic diagram of the internal structure of the vertical telescopic rod in the embodiment.

[0020] In the attached diagram, the structural names represented by each number are as follows:

[0021] 1-Positioning wheel, 2-Connecting hole, 3-Connecting column, 4-Slide groove, 5-Slide column, 6-Tensioning arc block, 7-Positioning drill, 8-Adjusting disc, 81-Rotating handle, 9-Arc groove, 10-Connecting shaft, 11-Telescopic shaft, 111-Snap-fit ​​protrusion, 12-Limit bolt, 13-Inclined rod, 14-Handle, 15-Vertical telescopic rod, 151-Sleeve, 152-Inset rod, 153-Spring, 16-Wheel frame, 17-Auxiliary wheel, 18-Scale. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0023] Example 1

[0024] To improve adaptability and achieve precise plant spacing for transplanting tobacco seedlings in different fields, the spacing between the two positioning wheels 1 should be adjusted according to both the actual plant spacing and the actual ridge spacing during the transplanting process. (See also...) Figures 1 to 6 As shown, this embodiment proposes a spacing device for transplanting tobacco seedlings in a well cellar, including a frame. The frame includes a connecting shaft 10, with telescopic shafts 11 connected to both ends of the connecting shaft 10. The telescopic shaft 11 is provided with a snap-fit ​​protrusion 111 that slides and snaps into the inside of the connecting shaft 10. The end of the telescopic shaft 11 is connected to the center of the positioning wheel 1 through a bearing. The distance between the two positioning wheels 1 can be adjusted within the range of 100-130cm. Limiting bolts 12 are also threaded to the upper part of both ends of the connecting shaft 10. The limiting bolts 12 press the snap-fit ​​protrusion 111 to fix the telescopic shaft 11 in a limited position. An upward tilting rod 13 is also connected to the middle of the connecting shaft 10. A handle 14 is connected to the top of the tilting rod 13. The operator pushes the positioning wheel 1 to rotate forward by holding the handle 14.

[0025] When adjusting the distance between the two positioning wheels 1, first loosen the limiting bolt 12, then adjust the sliding extension and retraction of the telescopic shaft 11 according to the row spacing of the two planting ridges, and tighten the limiting bolt 12 to fix it when the position of the two positioning wheels 1 is adjusted to meet the row spacing of the planting ridges.

[0026] The positioning wheel 1 has six radially spaced connecting holes 2 evenly spaced on its arc surface, and connecting posts 3 are installed inside the connecting holes 2. A sliding groove 4 is formed on the outer end face of the positioning wheel 1 corresponding to the connecting post 3. A sliding post 5 is provided at the end of the connecting post 3 near the center of the positioning wheel 1, which engages with the sliding groove 4, thus allowing the connecting post 3 to slide only along the connecting holes 2 and not rotate. A tensioning arc block 6 is connected to the end of the connecting post 3 away from the center of the positioning wheel 1. The tensioning arc block 6 initially forms a circle installed outside the positioning wheel 1, and a positioning drill is threaded onto the arc surface of the tensioning arc block 6. 7. Positioning and drilling marks are made using positioning drill 7; an adjusting disc 8 is also threadedly connected to the outer end face of positioning wheel 1. An arc-shaped groove 9 is provided on the adjusting disc 8 corresponding to each sliding column 5. Rotating the adjusting disc 8 causes the arc-shaped groove 9 to push the sliding column 5 to move within the sliding groove 4 to adjust the joint extension and retraction of the tensioning arc block 6, thereby adjusting the distance between positioning drills 7. The adjustment distance of positioning drills 7 is 50-60cm. Since the adjusting disc 8 is threadedly connected to positioning wheel 1, it can self-lock and fix the adjusted positioning distance when rotating, improving the adjustment accuracy of the positioning distance.

[0027] To facilitate the rotation of the adjustment disc 8, a handle 81 is connected to the outside of the center of the adjustment disc 8.

[0028] In this embodiment, in order to reduce the weight of the positioning wheel 1, the inside of the positioning wheel 1 is hollowed out.

[0029] Meanwhile, in order to facilitate the real-time distance when adjusting the spacing of the positioning drill 7 and adjusting the two positioning wheels 1, scales 18 are also provided on the connecting column 3 and the telescopic shaft 11. The scale 18 on the connecting column 3 displays the outer circumference of the tensioning arc block 6 at this time, and the scale 18 on the two telescopic shafts 11 also displays the current distance between the two positioning wheels 1.

[0030] A vertical telescopic rod 15 is also connected downwards from the middle of the connecting shaft 10. The end of the vertical telescopic rod 15 is connected to a wheel frame 16, and an auxiliary wheel 17 is connected inside the wheel frame 16. The vertical telescopic rod 15 includes a sleeve 151 connected to the connecting shaft 10. An embedded rod 152 is connected inside the sleeve 151. A spring 153 is also provided between the embedded rod 152 and the inner end face of the sleeve 151. The end of the embedded rod 152 is connected to the wheel frame 16.

[0031] When transplanting tobacco seedlings at a fixed distance in the planting field, the two positioning wheels 1 are located on the two planting ridges respectively, and the auxiliary wheel 17 is located between the two planting ridges to support the movement. Under the action of the vertical telescopic rod 15, the auxiliary wheel 17 can always support the movement between the two planting ridges as the diameter of the tensioned arc block 6 expands.

[0032] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not describe all details exhaustively, nor do they limit the utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification.

Claims

1. A distance setting device for tobacco seedling pit transplanter, comprising a frame, characterized in that, The rack comprises a connecting shaft (10), the two ends of the connecting shaft (10) are respectively slidably connected with telescopic shafts (11), the telescopic shafts (11) are respectively connected with the center of the positioning wheel (1) through bearings, the upper parts of the two ends of the connecting shaft (10) are further threadedly connected with limiting bolts (12), the middle part of the connecting shaft (10) is further connected with an upwardly inclined inclined rod (13), and the top of the inclined rod (13) is connected with a handle (14). The positioning wheel (1) is provided with connecting holes (2) equidistantly arranged on the arc surface in the radial direction, and connecting columns (3) are arranged in the connecting holes (2); sliding grooves (4) are formed in the outer end surface of the positioning wheel (1) and correspond to the connecting columns (3); the end of the connecting column (3) close to the center of the positioning wheel (1) is provided with a sliding column (5) connected with the sliding groove (4); the end of the connecting column (3) away from the center of the positioning wheel (1) is connected with a tensioning arc block (6); and a positioning drill (7) is threadedly connected with the arc surface of the tensioning arc block (6); and an adjusting disc (8) is further threadedly connected with the outer end surface of the positioning wheel (1), and an arc-shaped slot (9) is formed in the adjusting disc (8) and corresponds to each sliding column (5).

2. The distance fixing device for tobacco seedling well transplantation according to claim 1, characterized in that, The six connecting holes (2) are equidistantly arranged on the arc surface of the positioning wheel (1), and the six connecting columns (3) are correspondingly arranged; each connecting column (3) is connected with a tensioning arc block (6), and each tensioning arc block (6) is threadedly connected with a positioning drill (7).

3. The distance fixing device for tobacco seedling well transplantation according to claim 1, characterized in that, The middle part of the connecting shaft (10) is further connected with a vertical telescopic rod (15) downward, and the end of the vertical telescopic rod (15) is connected with a wheel frame (16); and the wheel frame (16) is connected with an auxiliary wheel (17).

4. The distance fixing device for tobacco seedling well transplantation according to claim 3, characterized in that, The vertical telescopic rod (15) comprises a sleeve (151) connected with the connecting shaft (10), and an embedded rod (152) is connected in the sleeve (151); the embedded rod (152) and the inner end surface of the sleeve (151) are further connected with a spring (153), and the end of the embedded rod (152) is connected with the wheel frame (16).

5. The distance fixing device for tobacco seedling well transplantation according to claim 1, characterized in that, The connecting column (3) and the telescopic shaft (11) are further provided with scales (18).

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