A double wheel dotter positioner

Abstract

The utility model discloses a double wheel dotting positioner, include: push frame, and its front end both sides are equipped with fixed cylinder, fixed distance mechanism, including fixed distance wheel, cam, sleeve, fixed distance rod and spring, fixed distance wheel rotatable installation in fixed cylinder, cam solid is equipped with fixed cylinder's outside, sleeve interval installation is in fixed distance wheel's inside radial, fixed distance rod movable installation is in the sleeve, and the inner end of fixed distance rod movable abuts on cam, spring is sleeved on fixed distance rod. Through setting fixed distance mechanism, when fixed distance wheel rotates, and the intermittent of fixed distance rod makes the extension or contraction action, so that the soil is not easy to stick and accumulate on fixed distance rod, guarantees the effect of dotting fixed distance mark.

Description

Technical Field

[0001] This utility model relates to a dual-wheel dotting and positioning device, belonging to the field of flue-cured tobacco transplanting technology. Background Technology

[0002] Transplanting tobacco seedlings is a crucial step in tobacco production, and proper spacing is essential for ensuring healthy seedling growth, plant development, and tobacco quality. Nowadays, after ridging and mulching, a film is placed over the ridges to maintain soil moisture. Before transplanting, farmers mark the film with markers to determine the transplanting locations.

[0003] Existing literature (CN207118273U) discloses a double-row spacing device for tobacco transplanting mulch film, including rollers with spacing strips arranged on the outer circumference of the rollers. Two rollers are arranged side-by-side and connected by a rotating shaft, which is fitted onto a sleeve of a T-shaped push rod. This device marks double-row planting points on the film surface by the spacing strips on the outer circumference of the rollers. Although this device solves the problem of synchronous marking of double rows, it still has the following drawbacks: because the spacing strips are fixed to the outer circumference of the rollers, they are prone to soil accumulation after continuous rotation and marking, resulting in poor marking effect. Utility Model Content

[0004] Based on the above, this utility model provides a dual-wheel dotting positioner to overcome the shortcomings of the prior art.

[0005] The technical solution of this utility model is: a dual-wheel dotting and positioning device, comprising: The push frame has fixed cylinders on both sides of its front end; The distance-fixing mechanism includes a distance-fixing wheel, a cam, a sleeve, a distance-fixing rod, and a spring. The distance-fixing wheel is rotatably mounted on the fixed cylinder. The cam is fixed to the outside of the fixed cylinder. The sleeve is installed radially on the inner side of the distance-fixing wheel at intervals. The distance-fixing rod is movably mounted inside the sleeve, and the inner end of the distance-fixing rod movably abuts against the cam. The spring is fitted onto the distance-fixing rod.

[0006] In one example, the push frame includes a horizontal bar, a push rod, and a handrail, with the bottom of the push rod fixed to the middle of the horizontal bar and the handrail mounted on the top of the push rod; An adjustment hole is provided on the outer side of the transverse rod, and an adjustment rod is provided on the inner end face of the fixed cylinder. The adjustment rod is adjustablely installed in the adjustment hole.

[0007] In one example, the fixed-distance wheel has strip-shaped openings spaced apart along its circumference, the sleeve has a stop block, and the outer end of the sleeve is fitted with a locking nut, the sleeve is fixed in the strip-shaped opening by the stop block and the locking nut.

[0008] In one example, the inner end of the spacer is provided with a roller, and the protrusion of the cam is configured to face vertically toward the horizontal ground.

[0009] In one example, the fixed cylinder has a fixed shaft inside, the fixed wheel is mounted on the fixed shaft, the fixed shaft is equipped with a magnetoelectric probe of an electromagnetic induction automatic counter, the fixed wheel is equipped with a trigger element of the electromagnetic induction automatic counter, and the display screen of the electromagnetic induction automatic counter is mounted on the push frame.

[0010] The beneficial effects of this invention are as follows: When the push frame moves forward, the spacer wheel rotates relative to the fixed cylinder. During the rotation of the spacer wheel, under the action of the spring, the inner end of the spacer rod always abuts against the cam. When the spacer rod moves to the lower part of the cam, under the action of the protrusion, the spacer rod extends relative to the sleeve, extending from the bottom position of the spacer wheel, thus achieving dotting on the mulch film. After rotating past this bottom position, under the action of the spring, the spacer rod retracts into the sleeve. Through the continuous extension and retraction of the spacer rod, soil is less likely to stick and accumulate on the spacer rod, ensuring the dotting and spacing marking effect. In addition, by installing an electromagnetic induction automatic counter, automatic counting during dotting can be achieved, which can greatly reduce the time cost of subsequent dotting and verification. Attached Figure Description

[0011] Figure 1 A schematic diagram of a dual-wheel dot-matrix positioning device; Figure 2 A schematic diagram of the pusher frame; Figure 3 This is a schematic diagram of a fixed-distance wheel from one perspective. Figure 4 This is a schematic diagram of a fixed-distance wheel from another perspective; Figure 5 This is a schematic diagram of the spacer rod and the sleeve; Explanation of reference numerals in the attached figures: Push frame: 11 Fixed cylinder, 12 Horizontal bar, 13 Push rod, 14 Handrail, 15 Adjusting rod, 16 Adjusting hole; Distance fixing mechanism: 21 Distance fixing wheel, 22 Cam, 23 Sleeve, 24 Distance fixing rod, 25 Spring, 26 Strip opening, 27 Stop block, 28 Locking nut, 29 Fixed shaft, 30 Magnetoelectric probe, 31 Triggering element, 32 Display screen, 33 Roller. Detailed Implementation

[0012] To make the above-mentioned objectives, features, and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a full understanding of this utility model. However, this utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed below.

[0013] Please see Figures 1 to 5 This embodiment provides a dual-wheel dotting positioner, which includes a pusher frame and a distance fixing mechanism.

[0014] Fixed cylinders 11 are provided on both sides of the front end of the push frame. The distance fixing mechanism includes distance fixing wheels 21, cams 22, sleeves 23, distance fixing rods 24 and springs 25. The two distance fixing wheels 21 are rotatably mounted on the fixed cylinders 11 respectively. The cams 22 are fixedly mounted on the outside of the fixed cylinders 11. The sleeves 23 are installed radially on the inner side of the distance fixing wheels 21 at intervals. The distance fixing rods 24 are movably mounted in the sleeves 23, and the inner end of the distance fixing rods 24 moves against the cams 22. A roller 33 is provided at the inner end of the distance fixing rods 24. The springs 25 are fitted on the distance fixing rods 24. The protrusion of the cams 22 is set to face vertically towards the horizontal ground.

[0015] As the pusher moves forward, the spacer wheel 21 rotates relative to the fixed cylinder 11. During the rotation of the spacer wheel 21, under the action of the spring 25, the inner end of the spacer rod 24 always abuts against the cam 22. When the spacer rod 24 moves to the lower part of the cam 22, under the action of the protrusion, the spacer rod 24 extends relative to the sleeve 23, extending from the bottom position of the spacer wheel 21, thereby achieving dotting on the mulch film. After rotating past this bottom position, under the action of the spring 25, the spacer rod 24 retracts back into the sleeve 23. Through the continuous extension and retraction of the spacer rod 24, soil is less likely to stick and accumulate on the spacer rod 24, ensuring the dotting and spacing marking effect.

[0016] For ease of operation, the push frame includes a horizontal rod 12, a push rod 13, and a handrail 14. The bottom of the push rod 13 is fixed to the middle of the horizontal rod 12, and the handrail 14 is installed on the top of the push rod 13. An adjustment hole 16 is axially opened on the outer side of the horizontal rod 12, and an adjustment rod 15 is provided on the inner end face of the fixed cylinder 11. The adjustment rod 15 is adjustablely installed in the adjustment hole 16, so that the position of the adjustment rod 15 in the adjustment hole 16 can be adjusted as needed, thereby realizing the adjustment of the distance between the two fixed-distance wheels 21.

[0017] For ease of operation, multiple slots 26 are provided at intervals along the circumference of the spacer wheel 21, and a stop block 27 is provided on the sleeve 23. A locking nut 28 is provided at the outer end of the sleeve 23. The sleeve 23 is fixed in the slots 26 by the stop block 27 and the locking nut 28, so that the corresponding number of spacer rods 24 can be installed according to the dotting distance, and the position of the spacer rods 24 can be adjusted.

[0018] To facilitate subsequent counting, a fixed shaft 29 is provided inside the fixed cylinder 11. A fixed-distance wheel 21 is mounted on the fixed shaft 29, and a magnetoelectric probe 30 of an electromagnetic induction automatic counter is mounted on the fixed shaft 29. A trigger element 31 of the electromagnetic induction automatic counter is mounted on the fixed-distance wheel 21. When the fixed-distance wheel 21 rotates one revolution relative to the fixed shaft 29, the trigger element 31 triggers the count once. The display screen 32 of the electromagnetic induction automatic counter is mounted on the push rod 13 for easy observation.

[0019] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of this utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A dual-wheel dot-matrix positioning device, characterized in that, include: The push frame has fixed cylinders (11) on both sides of its front end. The distance fixing mechanism includes a distance fixing wheel (21), a cam (22), a sleeve (23), a distance fixing rod (24), and a spring (25). The distance fixing wheel (21) is rotatably mounted on the fixed cylinder (11). The cam (22) is fixed on the outside of the fixed cylinder (11). The sleeve (23) is installed at intervals on the inner radial side of the distance fixing wheel (21). The distance fixing rod (24) is movably mounted inside the sleeve (23), and the inner end of the distance fixing rod (24) moves against the cam (22). The spring (25) is fitted onto the distance fixing rod (24). The protrusion of the cam (22) is set to face the horizontal ground vertically.

2. The dual-wheel dotting positioner according to claim 1, characterized in that, The push frame includes a horizontal bar (12), a push rod (13), and a handrail (14). The bottom of the push rod (13) is fixed to the middle of the horizontal bar (12), and the handrail (14) is installed on the top of the push rod (13). The outer side of the transverse rod (12) is provided with an adjustment hole (16), and the inner end face of the fixed cylinder (11) is provided with an adjustment rod (15). The adjustment rod (15) is adjustablely installed in the adjustment hole (16).

3. The dual-wheel dotting positioner according to claim 1, characterized in that, The fixed-distance wheel (21) is provided with strip-shaped openings (26) spaced around its circumference. The sleeve (23) is provided with a stop block (27), and the outer end of the sleeve (23) is provided with a locking nut (28). The sleeve (23) is fixed in the strip-shaped openings (26) by the stop block (27) and the locking nut (28).

4. The dual-wheel dotting and positioning device according to claim 1, characterized in that, The inner end of the spacer rod (24) is provided with a roller (33).

5. The dual-wheel dotting positioner according to claim 1, characterized in that, The fixed cylinder (11) is provided with a fixed shaft (29), the fixed wheel (21) is installed on the fixed shaft (29), and the fixed shaft (29) is equipped with a magnetoelectric probe (30) of an electromagnetic induction automatic counter. The fixed wheel (21) is equipped with a trigger element (31) of an electromagnetic induction automatic counter. The display screen (32) of the electromagnetic induction automatic counter is installed on the push frame.

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