A longitudinal conveying driving pulley for a rice transplanter

Abstract

This utility model discloses a longitudinal transmission drive pulley for a rice transplanter, belonging to the technical field of rice transplanter accessories. The longitudinal transmission drive pulley of this utility model includes a pulley body, a weed-proof ring on the front end face of the pulley body, and four evenly distributed oblique cutting strips on the front end of the pulley body. This utility model solves the problem that in the actual use of existing rice transplanter pulleys, weeds easily become entangled on the pulley, drive shaft, and adjacent components due to the working environment, affecting long-term operation. This utility model sets the weed-proof ring at the outermost rim. Through the integrally formed weed-proof ring and cutting grooves, when the pulley body rotates, the oblique cutting strips form a rotating cutting surface. Weeds entering the spoke cavity are guided to the top of the oblique cutting strips and cut off as the wheel rotates, preventing weeds from entangled on the spokes and drive shaft, and facilitating adaptation to different working environments.

Description

Technical Field

[0001] This utility model relates to the technical field of rice transplanter accessories, specifically a longitudinal transmission drive pulley for a rice transplanter. Background Technology

[0002] In the complex structure of a rice transplanter, the pulley is one of the core components for power transmission. It mainly relies on the friction between the belt and the two pulleys to achieve efficient transmission of motion and power.

[0003] Chinese Patent CN210124086U discloses a seedling delivery pulley for a hand-held rice transplanter. This pulley is positioned below a belt and includes a pulley body. Multiple teeth are evenly distributed around the outer circumference of the pulley body, with a partition connecting any two teeth. An arched hole is formed between the partition and the pulley body below the partition. A polygonal hole for a rotating shaft to pass through is located at the center of the pulley body. This patent features a simple structure, reducing the likelihood of rubbing against the seedling tray and improving the stability of the pulley transmission.

[0004] In actual use, the pulley of the rice transplanter mentioned in the above patent is affected by the working environment, and weeds are easily entangled on the pulley, drive shaft and adjacent parts, affecting long-term operation; therefore, it does not meet the existing needs. In response, we have proposed a longitudinal transmission drive pulley for rice transplanters. Utility Model Content

[0005] The purpose of this utility model is to provide a longitudinal transmission drive pulley for rice transplanters, which solves the problem mentioned in the background art that, in actual use, weeds are easily entangled on the pulley, drive shaft and adjacent components due to the working environment, affecting long-term operation.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a longitudinal transmission drive pulley for a rice transplanter, comprising a pulley body, a weed-proof ring provided on the front end face of the pulley body, a plurality of integrally formed grooves surrounding the weed-proof ring, and four evenly distributed oblique cutting strips provided on the front end of the pulley body, with connecting blocks and pressure springs respectively installed at both ends of the oblique cutting strips.

[0007] Preferably, the pulley body is provided with three integrally formed rims, and an integrally formed belt groove is provided between the three rims.

[0008] Preferably, the inner ring of the weed-proof ring is welded to a connecting disc, and the connecting disc is connected to the surface of the pulley body by fixing screws.

[0009] Preferably, the pulley body has four spokes arranged in annular needle arrays inside, and a hub is fixedly installed between the four spokes.

[0010] Preferably, the included angles between the four spokes are the same, the positions of the four oblique cutting strips are located in the middle of the cavity between the spokes, and the four oblique cutting strips are inclined at a 15-degree angle to the radial direction of the spokes, with the inclination angle inclined in the direction of rotation of the pulley body.

[0011] Preferably, couplings are installed at both the front and rear ends of the hub, and the couplings are used to connect the drive shaft.

[0012] Preferably, one end of the oblique cutting strip is fixedly connected to the connecting block, and the connecting block is connected to the outside of the wheel rim by fixing screws, and the outer surface of the oblique cutting strip is provided with an integrally formed cutting toothed strip.

[0013] Preferably, the oblique cutting strip is fixedly connected to the pressure spring, and the pressure spring is welded to the outside of the wheel hub.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] 1. The pulley body of this utility model features a weed-proof ring at the outermost rim. The integrated weed-proof ring and groove achieve a compact structure and allow for easy disassembly and assembly to adapt to different working environments. During operation, as the pulley body rotates, the weed-proof ring at the front end forms a ring barrier, preventing upright weeds and mud from directly entering the pulley body. This avoids weeds getting stuck in the pulley body's groove, causing belt damage, or mud causing hard friction between the belt and the groove. The ring design reduces weed snagging, and the groove cuts longer weeds to prevent tangling, effectively reducing the amount of manual weeding work later.

[0016] 2. This utility model features an oblique cutting strip on the outer side of the wheel spokes. When the pulley rotates, the oblique cutting strip forms a rotating cutting surface. Weeds entering the wheel spoke cavity are guided to the top of the oblique cutting strip and cut off as the wheel rotates. This prevents weeds from tangling around the wheel spokes and drive shaft. The four evenly distributed oblique cutting strips ensure no dead angles in the cut, resulting in a lower rate of missed weeds. The pulley rotates more evenly, and the modification cost is low, far lower than the cost of replacing parts caused by weeds. This is beneficial for long-term operation. Attached Figure Description

[0017] Figure 1 This is an axonometric view of the front view of this utility model;

[0018] Figure 2 This is an axonometric view of the rear view of this utility model;

[0019] Figure 3This is an axonometric view of the side of this utility model;

[0020] Figure 4 This utility model Figure 3 A magnified view of a portion of area A in the middle.

[0021] In the diagram: 1. Pulley body; 101. Rim; 102. Belt groove; 2. Weed control ring; 201. Connecting disc; 202. Groove; 3. Spoke; 4. Hub; 401. Coupling; 5. Diagonal cutting strip; 501. Connecting block; 502. Pressure spring; 503. Cutting rack. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] Example 1:

[0024] To address the issue of existing rice transplanter pulleys where weeds easily become entangled in the pulleys, drive shaft, and adjacent components due to environmental factors, thus affecting long-term operation, please refer to [the relevant documentation]. Figure 1 - Figure 4 This embodiment provides the following technical solution:

[0025] This embodiment provides a longitudinal transmission drive pulley for a rice transplanter, comprising a pulley body 1. A weed-proof ring 2 is provided on the front end face of the pulley body 1. The weed-proof ring 2 is surrounded by several integrally formed grooves 202. By setting the weed-proof ring 2 at the outermost rim 101, the pulley body 1 achieves a compact structure through the integrally formed weed-proof ring 2 and the grooves 202. At the same time, it can be disassembled and assembled to facilitate adaptation to different working environments. The front end of the pulley body 1 is provided with four evenly distributed oblique cutting strips 5. Connecting blocks 501 and pressure springs 502 are respectively installed at both ends of the oblique cutting strips 5.

[0026] The pulley body 1 has four spokes 3 arranged in annular needle arrays inside, and a hub 4 is fixedly installed between the four spokes 3.

[0027] In addition, the pulley body 1 is provided with three integrally formed wheel rims 101, and an integrally formed belt groove 102 is provided between the three wheel rims 101.

[0028] It should be noted that the inner ring of the weed-proof ring 2 is welded with a connecting plate 201. The connecting plate 201 is connected to the surface of the pulley body 1 by fixing screws. When the pulley body 1 rotates, the weed-proof ring 2 at the front end forms a ring barrier, which can prevent upright weeds and mud from entering the pulley body 1 directly, and prevent weeds from getting stuck in the inner groove of the pulley body 1 and causing damage to the belt. Combined with the cutting groove 202, longer weeds are cut off to avoid tangling, and the amount of manual weeding work in the later stage can be effectively reduced.

[0029] Specifically, the pulley body 1 has a weed-proof ring 2 at the outermost rim 101. The integrated weed-proof ring 2 and the groove 202 achieve a compact structure and can be disassembled to adapt to different working environments. During operation, the pulley body 1 rotates, and the weed-proof ring 2 at the front end forms a ring barrier to prevent upright weeds and mud from entering the pulley body 1 directly. This avoids weeds getting stuck in the groove of the pulley body 1 and causing belt damage, or mud causing hard friction between the belt and the groove. The ring design reduces weed snagging, and the groove 202 cuts longer weeds to prevent tangling, effectively reducing the amount of manual weeding work later.

[0030] Example 2:

[0031] To address the issue of existing rice transplanter pulleys where weeds easily become entangled in the pulleys, drive shaft, and adjacent components due to environmental factors, thus affecting long-term operation, please refer to [the relevant documentation]. Figure 1 - Figure 4 This embodiment provides the following technical solution:

[0032] In this embodiment, a longitudinal transmission drive pulley for a rice transplanter includes a pulley body 1. The front end of the pulley body 1 is provided with four evenly distributed oblique cutting strips 5. A connecting block 501 and a pressure spring 502 are respectively installed at both ends of the oblique cutting strips 5.

[0033] The pulley body 1 has four spokes 3 arranged in annular needle arrays inside. A hub 4 is fixedly installed between the four spokes 3. An oblique cutting strip 5 is set on the outside of the spokes 3. The included angle between the four spokes 3 is the same. The four oblique cutting strips 5 are located in the middle of the cavity between the spokes 3. The four evenly distributed oblique cutting strips 5 ensure that there are no dead angles in the cutting, the rate of weeds being missed is lower, and the pulley body 1 rotates more evenly. The modification cost is low, far lower than the cost of replacing parts caused by weeds, which is conducive to long-term operation.

[0034] The pulley body 1 has three integrally formed rims 101, and an integrally formed belt groove 102 is provided between the three rims 101.

[0035] In fact, the four oblique cutting strips 5 are inclined at a 15-degree angle to the radial direction of the spokes 3, and the angle of inclination is inclined in the direction of rotation of the pulley body 1. When the pulley body 1 rotates, the oblique cutting strips 5 form a rotating cutting surface. The weeds that enter the cavity of the spokes 3 will be guided to the top of the oblique cutting strips 5 and cut off as the wheel rotates.

[0036] The front and rear ends of the hub 4 are equipped with couplings 401, which are used to connect the drive shaft to prevent weeds from getting tangled in the spokes 3 and the drive shaft. Four evenly distributed diagonal cutting strips 5 ensure that there are no dead angles in the cutting and that the rate of missing weeds is lower.

[0037] Furthermore, one end of the oblique cutting strip 5 is fixedly connected to the connecting block 501, and the connecting block 501 is connected to the outside of the wheel rim 101 by fixing screws, and the outer surface of the oblique cutting strip 5 is provided with an integrally formed cutting toothed rack 503.

[0038] In addition, the oblique cutting strip 5 is fixedly connected to the pressure spring 502, and the pressure spring 502 is welded to the outside of the hub 4. The pressure spring 502 provides tension to maintain the toughness of the oblique cutting strip 5 and maintain effective strength during long-term cutting operations.

[0039] Specifically, by setting oblique cutting strips 5 on the outer side of the spokes 3, when the pulley body 1 rotates, the oblique cutting strips 5 form a rotating cutting surface. Weeds that enter the cavity of the spokes 3 will be guided to the top of the oblique cutting strips 5 and cut off as the wheel rotates, avoiding weeds from getting tangled in the spokes 3 and drive shaft. The four evenly distributed oblique cutting strips 5 ensure no dead angles in the cutting, resulting in a lower rate of weeds not being cut. The pulley body 1 also rotates more evenly. The modification cost is low, far lower than the cost of replacing parts caused by weeds, which is beneficial for long-term operation.

[0040] Working principle: During use, the pulley body 1 is driven to rotate by the drive shaft. During rotation, the weed-proof ring 2, through its integrated design and the groove 202, achieves a compact structure and can be disassembled to adapt to different working environments. In operation, as the pulley body 1 rotates, the weed-proof ring 2 at the front end forms a ring-shaped barrier, preventing upright weeds and mud from directly entering the pulley body 1. This avoids weeds getting stuck in the groove of the pulley body 1, causing belt damage, or mud causing hard friction between the belt and the groove. The ring-shaped design reduces weed snagging, and works in conjunction with the groove 202. Longer weeds are cut to prevent tangling. Then, oblique cutting strips 5 are set on the outside of the spokes 3. When the pulley body 1 rotates, the oblique cutting strips 5 form a rotating cutting surface. Weeds that enter the cavity of the spokes 3 are guided to the top of the oblique cutting strips 5 and cut as the wheel rotates. This prevents weeds from tangling with the spokes 3 and the drive shaft. The four evenly distributed oblique cutting strips 5 ensure no dead angles in the cut, resulting in a lower rate of missed weeds. The pulley body 1 also rotates more evenly. The modification cost is low, far lower than the cost of replacing parts caused by weeds. This is beneficial for long-term operation and can effectively reduce the amount of manual weeding work in the later stages.

[0041] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus.

[0042] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention.

Claims

1. A longitudinal transmission drive pulley for a rice transplanter, comprising a pulley body (1), characterized in that, The front end face of the pulley body (1) is provided with a weed-proof ring (2), and the weed-proof ring (2) is surrounded by several integrally formed grooves (202). The front end of the pulley body (1) is provided with four evenly distributed oblique cutting strips (5), and the two ends of the oblique cutting strips (5) are respectively equipped with connecting blocks (501) and pressure springs (502).

2. The longitudinal transmission drive pulley for a rice transplanter according to claim 1, characterized in that, The pulley body (1) is provided with three integrally formed wheel rims (101), and an integrally formed belt groove (102) is provided between the three wheel rims (101).

3. The longitudinal transmission drive pulley for a rice transplanter according to claim 1, characterized in that, The inner ring of the weed-proof ring (2) is welded to a connecting disc (201), which is connected to the surface of the pulley body (1) by fixing screws.

4. A longitudinal transmission drive pulley for a rice transplanter according to claim 2, characterized in that, The pulley body (1) has four spokes (3) arranged in annular needle array inside, and a hub (4) is fixedly installed between the four spokes (3).

5. A longitudinal transmission drive pulley for a rice transplanter according to claim 4, characterized in that, The included angles between the four spokes (3) are the same, the positions of the four oblique cutting strips (5) are located in the middle of the cavity between the spokes (3), and the four oblique cutting strips (5) are inclined at a 15-degree angle to the radial direction of the spokes (3), and the inclination angle is inclined in the direction of rotation of the pulley body (1).

6. A longitudinal transmission drive pulley for a rice transplanter according to claim 4, characterized in that, The front and rear ends of the hub (4) are each equipped with a coupling (401), which is used to connect the drive shaft.

7. A longitudinal transmission drive pulley for a rice transplanter according to claim 2, characterized in that, One end of the oblique cutting strip (5) is fixedly connected to the connecting block (501), and the connecting block (501) is connected to the outside of the wheel rim (101) by fixing screws, and the outer surface of the oblique cutting strip (5) is provided with an integrally formed cutting toothed strip (503).

8. A longitudinal transmission drive pulley for a rice transplanter according to claim 4, characterized in that, The oblique cutting strip (5) is fixedly connected to the pressure spring (502), and the pressure spring (502) is welded to the outside of the hub (4).

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