A type of agricultural tiller drive wheel frame

Abstract

This application relates to a transmission wheel frame for an agricultural tiller, belonging to the technical field of agricultural tillers. The transmission wheel frame includes: a transmission frame body, on which a plug-in positioning component matching the wheel or tiller blade is provided. The plug-in positioning component includes a snap-fit ​​groove and a positioning protrusion that engage with each other; a locking block for locking the positioning protrusion in the snap-fit ​​groove, the side wall of the snap-fit ​​groove having a locking groove that engages with the locking block; a compression spring for pushing the locking block against the locking groove; and an unlocking component for driving the locking block to slide out of the locking groove. This application locks the positioning protrusion in the snap-fit ​​groove by inserting the positioning protrusion into a designated position in the snap-fit ​​groove and then pushing the locking block into the locking groove by the compression spring. When the wheel or tiller blade needs to be replaced, the locking block is slid out of the locking groove by the unlocking component, thus separating the positioning protrusion from the snap-fit ​​groove and improving the replacement efficiency of the wheel and tiller blade.

Description

Technical Field

[0001] This application relates to the technical field of agricultural machinery, and in particular to a transmission wheel frame for agricultural machinery. Background Technology

[0002] When agricultural tillers are moved around in daily operations, the wheels are mounted on the drive wheel frame to directly propel them, making it easy to move around. When it is necessary to till the land, the wheels are removed from the tiller and replaced with ring-shaped blades to facilitate tilling. However, the process of replacing the wheels and blades is cumbersome, time-consuming and labor-intensive. Utility Model Content

[0003] To facilitate the improvement of the efficiency of changing wheels and blades, this application provides a transmission wheel frame for a tiller.

[0004] This application provides a transmission wheel frame for an agricultural tiller, which adopts the following technical solution:

[0005] A drive wheel frame for a farming machine, comprising:

[0006] The transmission frame body is mounted on the agricultural tiller. The transmission frame body is provided with a plug-in positioning component that matches the wheel or tiller blade. The plug-in positioning component includes a snap-fit ​​groove and a positioning protrusion that engage with each other.

[0007] A locking block is slidably disposed on a positioning protrusion and used to lock the positioning protrusion in a snap-fit ​​groove. A locking groove is provided on the side wall of the snap-fit ​​groove to engage with the locking block.

[0008] A compression spring is provided on the positioning protrusion and is used to push the locking block against the locking groove.

[0009] An unlocking component is disposed on a positioning protrusion and is used to drive the locking block to slide out of the locking groove.

[0010] By adopting the above technical solution, when the positioning protrusion is inserted into the designated position in the locking groove, the locking block is pushed into the locking groove by the compression spring, thereby locking the positioning protrusion in the locking groove. When it is necessary to replace the wheel or the blade, the locking block is slid out of the locking groove by the unlocking component, which can realize the separation of the positioning protrusion from the locking groove, thus improving the replacement efficiency of the wheel and the blade.

[0011] Furthermore, the unlocking component includes:

[0012] A pull rope is provided on the side of the locking block near the compression spring and is used to pull the locking block to compress the compression spring;

[0013] A guide member, which is disposed within a positioning protrusion and is used to steer the sliding direction of the pull rope;

[0014] A pull ring is provided on the end of the pull rope away from the locking block and is used to pull the pull rope to slide. The pull ring pulls the pull rope to slide and, after being turned by the guide, drives the locking block to compress the compression spring.

[0015] By adopting the above technical solution, when it is necessary to replace the wheel or tiller blade, the user pulls the pull ring, which causes the pull rope to slide. After the guide is turned, the locking block slides. When the locking block slides out of the locking groove, the locking between the positioning protrusion and the snap-fit ​​groove can be released.

[0016] Furthermore, the locking block, compression spring, and pull rope are each provided in two sets. The two sets of locking blocks and compression springs are located on opposite side walls of the positioning protrusion, and the two sets of pull ropes are connected to the pull ring.

[0017] By adopting the above technical solution, the symmetrical arrangement of the double locking blocks balances the locking force on both sides, avoiding wear or loosening caused by uneven force on one side, thus improving the reliability of the structure. At the same time, the sliding of the two sets of locking blocks can be easily controlled by pulling the two sets of locking blocks simultaneously through a single pull ring.

[0018] Furthermore, the guide is a sliding sleeve disposed within the positioning protrusion, and both opposite ends of the sliding sleeve are provided with arc-shaped guide surfaces. A smooth layer for reducing friction is provided inside the sliding sleeve, and the pull rope is slidably disposed within the sliding sleeve.

[0019] By adopting the above technical solution, the arc-shaped guide surface and the sliding sleeve cooperate with each other to change the sliding direction of the pull rope. At the same time, the smooth layer reduces the friction between the pull rope and the sliding sleeve, ensuring the smoothness of the unlocking process.

[0020] Furthermore, the transmission frame body is provided with a protective groove for protecting the pull ring. The pull ring is slidably disposed in the protective groove. A groove cover for protecting the pull ring is threaded on the protective groove. The groove cover presses the pull ring against the protective groove and seals the protective groove.

[0021] By adopting the above technical solution, the protective groove and the groove cover cooperate with each other to prevent the pull ring from being damaged by external force collision or mud and sand intrusion when it is not in use. When it is necessary to pull the pull ring, the groove cover can be removed. At the same time, the groove cover presses the pull ring against the protective groove, reducing the probability of the pull ring slipping due to centrifugal force when the transmission frame body rotates.

[0022] Furthermore, the snap-fit ​​groove has a tapered structure and is used to guide the positioning protrusion for precise alignment.

[0023] By adopting the above technical solution, the tapered snap-fit ​​groove facilitates the gradual guidance of the positioning protrusion for precise alignment during insertion, thereby improving installation efficiency.

[0024] Furthermore, the positioning protrusion has a rectangular cross-section, and after being inserted into the snap-fit ​​groove, the positioning protrusion cannot rotate relative to the snap-fit ​​groove.

[0025] By adopting the above technical solution, the rectangular cross-section positioning groove and the snap-fit ​​groove are not rotatable after they are engaged, ensuring that the wheel or tiller maintains a fixed angle, and at the same time, it is easy for the locking block to be accurately inserted into the locking groove.

[0026] Furthermore, the transmission frame body is provided with a locking block, and the locking block has a U-shaped groove. When the pull rope passes through the U-shaped groove and the pull ring is pressed against the locking block, it prevents the pull ring from sliding into the protective groove. When the locking block locks the pull ring, the locking block is located in the positioning protrusion.

[0027] By adopting the above technical solution, when the positioning protrusion needs to slide in the locking groove, in order to reduce the force between the locking block and the inner wall of the locking groove, the position of the pull ring is locked by the locking block, so that the force of the compression spring on the pull rope can be balanced without the user having to pull the pull ring continuously.

[0028] In summary, this application includes at least one of the following beneficial technical effects:

[0029] By inserting the positioning protrusion into the designated position within the locking groove, the compression spring pushes the locking block to slide into the locking groove, thereby locking the positioning protrusion within the locking groove. When it is necessary to replace the wheel or tiller blade, pulling the pull ring will cause the locking block to compress the spring via the pull rope. Once the locking block slides out of the locking groove, the positioning protrusion will separate from the locking groove, improving the efficiency of replacing the wheel and tiller blade. Attached Figure Description

[0030] Figure 1 This is a schematic diagram of the transmission wheel frame structure of the agricultural tiller of this application, which only shows the part of the structure in which the wheel body and tillage blades are connected to the main body of the transmission frame;

[0031] Figure 2 This is a schematic diagram of a half-section structure of this application;

[0032] Figure 3 yes Figure 2 A cross-sectional schematic diagram of AA in the middle;

[0033] Figure 4 yes Figure 2 Enlarged schematic diagram of section B.

[0034] Reference numerals: 1. Transmission frame body; 11. Protective groove; 2. Insertion positioning component; 21. Snap-fit ​​groove; 211. Locking groove; 22. Positioning protrusion; 3. Locking block; 4. Compression spring; 5. Unlocking component; 51. Pull rope; 52. Guide component; 53. Pull ring; 6. Groove cover; 7. Locking block; 71. U-shaped groove. Detailed Implementation

[0035] The following is in conjunction with the appendix Figures 1-4 This application will be described in further detail.

[0036] This application discloses a transmission wheel frame for a farming machine.

[0037] Reference Figure 1 and Figure 2 A transmission wheel frame for an agricultural tiller includes a transmission frame body 1, a locking block 3, a compression spring 4, and an unlocking assembly 5. The transmission frame body 1 is rotatably mounted on the agricultural tiller and connected to the power source of the agricultural tiller to drive the transmission frame body 1 to rotate. The transmission frame body 1 is provided with a plug-in positioning assembly 2 that matches the wheel or tiller blade. The plug-in positioning assembly 2 includes a snap-fit ​​groove 21 and a positioning protrusion 22 that engage with each other. The snap-fit ​​groove 21 is formed on the wheel or tiller blade, and the positioning protrusion 22 is fixedly mounted on the transmission frame body 1. The locking block 3 is slidably mounted on the locking block 5. On the side wall of the positioning protrusion 22, a locking groove 211 is provided on the inner side wall of the locking groove 21 to engage with the locking block 3. When the positioning protrusion 22 is engaged in the locking groove 21, the locking block 3 and the locking groove 211 engage with each other to prevent the positioning protrusion 22 and the locking groove 21 from sliding relative to each other. The compression spring 4 is fixedly installed on the positioning protrusion 22. The compression spring 4 is used to push the locking block 3 against the locking groove 211, thereby realizing the mutual engagement and locking between the positioning protrusion 22 and the positioning groove, and finally realizing the fixed installation of the wheel or tiller on the transmission frame body 1.

[0038] Reference Figure 2 In order to improve the engagement stability between the snap-fit ​​groove 21 and the positioning protrusion 22, the cross-section of the positioning protrusion 22 is rectangular, so that after the positioning protrusion 22 is inserted into the snap-fit ​​groove 21, the positioning protrusion 22 and the snap-fit ​​groove 21 cannot rotate, thereby improving the installation accuracy between the locking block 3 and the locking groove 211.

[0039] Reference Figure 2 and Figure 3 The snap-fit ​​groove 21 has a tapered structure, and the positioning protrusion 22 and the snap-fit ​​groove 21 are engaged with each other. The tapered structure of the snap-fit ​​groove 21 facilitates the precise alignment of the positioning protrusion 22, thereby improving the ease of installation and the installation accuracy.

[0040] Reference Figure 2 and Figure 4The unlocking component 5 is set on the positioning protrusion 22. The unlocking component 5 is used to drive the locking block 3 to slide out of the locking groove 211. The unlocking component 5 includes a pull rope 51, a guide 52 and a pull ring 53. One end of the pull rope 51 is fixedly installed on the side of the locking block 3 near the compression spring 4. The pull rope 51 is used to pull the locking block 3 to compress the compression spring 4. At the same time, after the pull rope 51 is pulled to the maximum distance, the locking block 3 will slide completely into the positioning protrusion 22. The guide 52 is set on the positioning protrusion 22 and is used to turn the sliding direction of the pull rope 51. The pull ring 53 is set on the end of the pull rope 51 away from the locking block 3. The pull ring 53 is used to pull the pull rope 51 to slide and after being turned by the guide 52, it pulls the sliding block to compress the compression spring 4. The pull ring 53 has a ring structure and is convenient for the user to pull the pull rope 51 to slide.

[0041] Reference Figure 2 and Figure 4 To improve the locking stability between the positioning protrusion 22 and the locking groove 21, two sets of locking blocks 3, compression springs 4 and pull ropes 51 are provided. The two sets of locking blocks 3 and compression springs 4 are located on opposite side walls of the positioning protrusion 22, and the two sets of pull ropes 51 are connected to the same set of pull rings 53, so that the sliding of the two sets of locking blocks 3 can be controlled simultaneously by the pull rings 53. When the transmission frame body 1 rotates in this embodiment, the locking blocks 3 are pressed against the locking groove 211 under the action of centrifugal force, thereby reducing the probability of the positioning protrusion 22 disengaging from the locking groove 21 when the transmission frame body 1 rotates.

[0042] Reference Figure 2 and Figure 4 The guide 52 is a sliding sleeve fixedly installed in the positioning protrusion 22. Both ends of the sliding sleeve are provided with arc-shaped guide surfaces. A smooth layer is sprayed on the inner side wall of the sliding sleeve. The pull rope 51 is slidably installed in the sliding sleeve. The sliding direction of the pull rope 51 is turned by the sliding sleeve and the arc-shaped guide surfaces at both ends, so that when the pull ring 53 is pulled, it drives the two sets of locking blocks 3 to slide towards the axis of the positioning protrusion 22. The smooth layer in this embodiment is made of polytetrafluoroethylene.

[0043] Reference Figure 4 The transmission frame body 1 is provided with a protective groove 11 to facilitate the protection of the pull ring 53. The pull ring 53 is slidably installed in the protective groove 11. A groove cover 6 for protecting the pull ring 53 is threaded on the protective groove 11. The bottom of the groove cover 6 presses the pull ring 53 against the protective groove 11. At the same time, the cover plate seals the protective groove 11, reducing the probability of debris entering the protective groove 11.

[0044] Reference Figure 4A locking block 7 is fixedly installed on the transmission frame body 1. The locking block 7 has a U-shaped groove 71. The opening of the U-shaped groove 71 is located on the side away from the axis of the transmission frame body 1. When the pull rope 51 passes through the U-shaped groove 71 and the pull ring 53 is pressed against the locking block 7, the locking block 7 prevents the pull ring 53 from sliding into the protective groove 11. When the locking block 7 locks the pull ring 53, the locking block 3 slides completely into the positioning protrusion 22. Specifically, when it is necessary to insert the positioning protrusion 22 into the snap-fit ​​groove 21 or slide... When the pull ring 53 is pulled out of the slot 21, the locking block 3 is completely slid into the positioning protrusion 22. At this time, the pull rope 51 is passed through the U-shaped groove 71, and the pull ring 53 is prevented from moving back by the locking block 7, so that the user does not need to pull the pull ring 53 continuously. When the positioning protrusion 22 is completely slid into or out of the slot 21, the pull rope 51 is taken out of the U-shaped groove 71, and the pull ring 53 retracts back into the protective groove 11 under the action of the compression spring 4.

[0045] The working principle of this application embodiment is as follows:

[0046] When the positioning protrusion 22 is inserted into the designated position in the locking groove 21, the locking block 3 is pushed into the locking groove 211 by the compression spring 4, thereby locking the positioning protrusion 22 in the locking groove 21. When the wheel or blade needs to be replaced, the pull ring 53 is pulled, and the locking block 3 is driven by the pull rope 51 to compress the compression spring 4. When the locking block 3 slides out of the locking groove 211, the positioning protrusion 22 can be separated from the locking groove 21, which improves the replacement efficiency of the wheel and blade.

[0047] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A transmission wheel frame for an agricultural tiller, characterized in that: include: The transmission frame body (1) is mounted on the agricultural tiller. The transmission frame body (1) is provided with a plug-in positioning component (2) that matches the wheel or tiller blade. The plug-in positioning component (2) includes a snap-fit ​​groove (21) and a positioning protrusion (22) that are engaged with each other. Locking block (3), the locking block (3) is slidably disposed on the positioning protrusion (22) and used to lock the positioning protrusion (22) in the snap-fit ​​groove (21). The side wall of the snap-fit ​​groove (21) is provided with a locking groove (211) that engages with the locking block (3). Compression spring (4), which is disposed on positioning protrusion (22) and used to push locking block (3) against locking groove (211); Unlocking component (5), which is disposed on positioning protrusion (22) and used to drive locking block (3) to slide out of locking groove (211).

2. The agricultural tiller transmission wheel frame according to claim 1, characterized in that: The unlocking component (5) includes: Pull rope (51), which is set on the side of the locking block (3) near the compression spring (4) and is used to pull the locking block (3) to compress the compression spring (4); A guide (52) is provided inside the positioning protrusion (22) and is used to steer the sliding direction of the pull rope (51); Pull ring (53), the pull ring (53) is set on the end of the pull rope (51) away from the locking block (3) and is used to pull the pull rope (51) to slide. The pull ring (53) pulls the pull rope (51) to slide and drives the locking block (3) to compress the compression spring (4) after turning through the guide (52).

3. The agricultural tiller transmission wheel frame according to claim 2, characterized in that: The locking block (3), compression spring (4) and pull rope (51) are provided in two sets. The two sets of locking blocks (3) and compression springs (4) are located on opposite side walls of the positioning protrusion (22), and the two sets of pull ropes (51) are connected to the pull ring (53).

4. The agricultural tiller transmission wheel frame according to claim 3, characterized in that: The guide (52) is a sliding sleeve set in the positioning protrusion (22). Both ends of the sliding sleeve are provided with arc-shaped guide surfaces. The sliding sleeve is provided with a smooth layer to reduce friction. The pull rope (51) is slidably set in the sliding sleeve.

5. The agricultural tiller transmission wheel frame according to claim 2, characterized in that: The transmission frame body (1) is provided with a protective groove (11) for protecting the pull ring (53). The pull ring (53) is slidably disposed in the protective groove (11). The protective groove (11) is threaded with a groove cover (6) for protecting the pull ring (53). The groove cover (6) presses the pull ring (53) against the protective groove (11) and seals the protective groove (11).

6. The agricultural tiller transmission wheel frame according to claim 1, characterized in that: The snap-fit ​​groove (21) is a tapered structure, and the snap-fit ​​groove (21) is used to guide the positioning protrusion (22) to be accurately aligned.

7. The agricultural tiller transmission wheel frame according to claim 6, characterized in that: The positioning protrusion (22) has a rectangular cross-section. After the positioning protrusion (22) is inserted into the snap-fit ​​groove (21), the positioning protrusion (22) cannot rotate relative to the snap-fit ​​groove (21).

8. The agricultural tiller transmission wheel frame according to claim 5, characterized in that: The transmission frame body (1) is provided with a locking block (7), and a U-shaped groove (71) is provided on the locking block (7). When the pull rope (51) passes through the U-shaped groove (71) and the pull ring (53) is pressed against the locking block (7), it prevents the pull ring (53) from sliding into the protective groove (11). When the locking block (7) locks the pull ring (53), the locking block (3) is located in the positioning protrusion (22).

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