A rotary cultivator transmission case facilitating speed adjustment

The use of interchangeable gear transmission sets solves the problem of matching the rotary tiller's transmission box with different tractors, achieving high adaptability and cost reduction for the rotary tiller, and improving work efficiency.

CN224497325UActive Publication Date: 2026-07-14TONGHAI HONGXING IND & TRADE CO LTD

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
TONGHAI HONGXING IND & TRADE CO LTD
Filing Date
2025-07-31
Publication Date
2026-07-14

AI Technical Summary

Technical Problem

The existing rotary tiller transmission box has a one-piece structure, which makes it incompatible with different tractor models, resulting in poor versatility, high operating costs, and low efficiency.

Method used

Design a rotary tiller transmission box that is easy to adjust speed. By using interchangeable gear transmission sets with different transmission ratios, it can match the output power and speed of different tractor models, achieving quick replacement and protection.

Benefits of technology

It improves the adaptability and working efficiency of rotary tillers, reduces user operating costs, reduces the need for frequent disassembly and assembly, and increases replacement speed and working efficiency.

✦ Generated by Eureka AI based on patent content.

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  • Figure CN224497325U_ABST
    Figure CN224497325U_ABST
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Abstract

The utility model relates to a kind of rotary cultivator transmission case facilitating speed change adjustment, belong to rotary cultivator technical field. Mainly including transmission case, transmission shaft, bearing seat, gear transmission group, the transmission shaft is installed in transmission case top by bearing seat, transmission shaft is parallel with the input shaft of transmission case, transmission shaft is transmission connection with the input shaft of transmission case by gear transmission group, the gear transmission group includes multiple groups of different transmission ratio's replaceable gear group;By quickly replacing gear transmission group of different transmission ratio, the rotational speed and input power of transmission case input shaft are guaranteed, ensure that rotary cultivator can match different model tractor, to adapt to different soil conditions or rotary cultivator environment, ensure the work efficiency of rotary cultivator;Without configuring transmission case of different transmission ratio, reduce the use cost of user, without frequently disassembling rotary cultivator, change speed is fast, save time and effort, improve work efficiency.
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Description

Technical Field

[0001] This utility model belongs to the field of rotary tiller technology, specifically relating to a rotary tiller transmission box that is easy to adjust speed. Background Technology

[0002] Rotary tillers require a transmission case to change the direction of the drive shaft and lower the height of the output shaft. Currently, the transmission cases on rotary tillers are of a single, integrated structure, consisting of only one housing containing the gear transmission mechanism. Since the power input to the transmission case comes from the tractor, and different tractors typically have different power outputs and output shaft speed ranges, multiple transmission cases with different gear ratios are needed to adapt to different soil conditions and tractors with varying power and output shaft speeds. This results in poor versatility for the single-unit transmission case structure, leading to high operating costs for users. Summary of the Invention

[0003] To overcome the problem in the prior art that rotary tillers cannot be matched with different models of tractors, this utility model provides a rotary tiller transmission box that is easy to adjust the speed of the transmission. By quickly changing gear transmission sets with different transmission ratios, the rotational speed and input power of the transmission box input shaft can be guaranteed, ensuring that the rotary tiller can be matched with different models of tractors to adapt to different soil conditions or rotary tillage environments, thus ensuring the working efficiency of the rotary tiller. There is no need to configure transmission boxes with different transmission ratios, reducing the user's operating costs. It also eliminates the need for frequent disassembly and assembly of the rotary tiller, allowing for fast replacement, saving time and effort, and improving work efficiency.

[0004] To achieve the above objectives, this utility model is implemented through the following technical solution: A rotary tiller transmission box with easy speed adjustment mainly includes a transmission box 1, a transmission shaft 2, a bearing seat 3, and a gear transmission group 4. The transmission shaft 2 is mounted on the top of the transmission box 1 through the bearing seat 3. The transmission shaft 2 is parallel to the input shaft 11 of the transmission box 1. The transmission shaft 2 and the input shaft 11 of the transmission box 1 are connected by the gear transmission group 4. The gear transmission group 4 includes multiple sets of replaceable gears with different transmission ratios. The transmission box 1 is installed on the rotary tiller frame to complete the installation of the rotary tiller blade shaft. The gear transmission group 4 with a suitable transmission ratio is replaced according to the output power and speed of the tractor. The input end of the transmission shaft 2 is connected to the output shaft of the tractor.

[0005] Furthermore, the transmission box 1 is provided with a cover mounting seat 12, and a detachable protective cover 13 is installed on the cover mounting seat 12 and covers the gear transmission assembly 4.

[0006] Furthermore, the protective cover 13 is mounted on the cover mounting base 12 by bolts.

[0007] The beneficial effects of this utility model are:

[0008] This invention ensures the rotational speed and input power of the transmission box input shaft by quickly replacing gear transmission sets with different transmission ratios, allowing the rotary tiller to match different tractor models to adapt to different soil conditions or rotary tillage environments, thus guaranteeing the working efficiency of the rotary tiller. It eliminates the need for transmission boxes with different transmission ratios, reducing user operating costs. It also eliminates the need for frequent disassembly and assembly of the rotary tiller, allowing for fast replacement, saving time and effort, and improving work efficiency. Attached Figure Description

[0009] Figure 1 This is a three-dimensional schematic diagram of the present invention.

[0010] Figure 2 This is a three-dimensional schematic diagram of the present invention without a protective cover.

[0011] Figure 3 This is a three-dimensional schematic diagram of the state of the transmission box without a protective cover of this utility model. Detailed Implementation

[0012] To make the objectives, technical solutions, and beneficial effects of this utility model clearer, the preferred embodiments of this utility model will be described in detail below with reference to the accompanying drawings, so as to facilitate the understanding of those skilled in the art.

[0013] This utility model discloses a rotary tiller transmission box with easy speed adjustment. The transmission box mainly includes a transmission box 1, a transmission shaft 2, a bearing seat 3, and a gear transmission set 4. The transmission shaft 2 is mounted on the top of the transmission box 1 via the bearing seat 3. The transmission shaft 2 is parallel to the input shaft 11 of the transmission box 1. The transmission shaft 2 and the input shaft 11 of the transmission box 1 are connected by the gear transmission set 4, which includes multiple replaceable gear sets with different transmission ratios. The transmission box 1 is installed on the rotary tiller frame, completing the installation of the rotary tiller blade shaft. The appropriate gear transmission set 4 with the correct transmission ratio is selected based on the tractor's output power and speed. The input end of the transmission shaft 2 is connected to the tractor's output shaft. By quickly changing gear transmission sets with different transmission ratios, the speed and input power of the transmission box input shaft are maintained, ensuring the rotary tiller can match different tractor models to adapt to different soil conditions or rotary tillage environments, thus ensuring the rotary tiller's working efficiency. There is no need to configure transmission boxes with different transmission ratios, reducing user operating costs. Frequent disassembly and assembly of the rotary tiller is eliminated, allowing for fast replacement, saving time and effort, and improving work efficiency.

[0014] In this embodiment, the transmission box 1 is provided with a cover mounting seat 12, and a detachable protective cover 13 is installed on the cover mounting seat 12 and placed on the gear transmission assembly 4. The protective cover 13 can prevent the gear transmission assembly 4 from getting tangled in weeds or entering debris, thus ensuring the transmission efficiency of the gear transmission assembly 4.

[0015] In this embodiment, the protective cover 13 is mounted on the cover mounting base 12 by bolts.

[0016] Work process:

[0017] Install the transmission box 1 on the rotary tiller frame to complete the installation of the rotary tiller blade shaft. Replace the gear transmission group 4 with a suitable gear ratio according to the tractor's output power and speed. Connect the input end of the transmission shaft 2 to the tractor's output shaft. By quickly replacing the gear transmission group with different gear ratios, the speed and input power of the transmission box input shaft can be guaranteed, ensuring that the rotary tiller can match different models of tractors to adapt to different soil conditions or rotary tillage environments, thus ensuring the working efficiency of the rotary tiller. There is no need to configure transmission boxes with different gear ratios, reducing the user's operating costs. There is no need to frequently disassemble and assemble the rotary tiller, the replacement speed is fast, saving time and effort, and improving work efficiency.

[0018] Finally, it should be noted that the above preferred embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although the utility model has been described in detail through the above preferred embodiments, those skilled in the art should understand that various changes can be made to it in form and detail without departing from the scope defined by the claims of this utility model.

Claims

1. A rotary tiller transmission box for easy speed adjustment, comprising a transmission box (1), characterized in that: The rotary tiller transmission box that is easy to adjust speed also includes a transmission shaft (2), a bearing seat (3), and a gear transmission group (4). The transmission shaft (2) is installed on the top of the transmission box (1) through the bearing seat (3). The transmission shaft (2) is parallel to the input shaft (11) of the transmission box (1). The transmission shaft (2) and the input shaft (11) of the transmission box (1) are connected by the gear transmission group (4). The gear transmission group (4) includes multiple sets of replaceable gears with different transmission ratios.

2. The rotary tiller transmission box for easy speed adjustment as described in claim 1, characterized in that: The transmission box (1) is provided with a cover mounting seat (12), and a detachable protective cover (13) is installed on the cover mounting seat (12) and placed on the gear transmission assembly (4).

3. A rotary tiller transmission box for easy speed adjustment as described in claim 2, characterized in that: The protective cover (13) is mounted on the cover mounting base (12) by bolts.