A transmission mechanism for a rotary cultivator-seeder

Abstract

The utility model discloses a transmission mechanism of rotary tillage seeding machine, including one -level side edge gear box, two -stage transmission case, one -level side edge gear box includes input gear, transition big gear wheel, output gear a, transition pinion set and output gear b, input gear rotation drives transition gear, and transition gear respectively transmission, output gear a and transition pinion set, two -stage transmission case includes two -stage input gear, intermediate transmission gear set and two -stage output gear, and two -stage input gear is connected input gear through chain, and two -stage input gear drives intermediate transmission gear set operation drive two -stage output gear, the utility model discloses gear transmission mode is adopted, improves its operating life, improves seeding efficiency.

Description

Technical Field

[0001] This utility model relates to the field of rotary tiller technology, and in particular to a transmission mechanism for a rotary tiller seeder. Background Technology

[0002] In early agricultural production, rotary tillage and sowing were separate processes, completed by rotary tillers and seeders respectively. From the mid-20th century onward, large-scale agriculture placed higher demands on efficiency, leading to the emergence of integrated rotary tiller-seeder machines. These machines need to simultaneously achieve soil tillage (high power requirements) and precise sowing (requirements for stable rotational speed). Traditional transmission methods struggled to balance the power distribution for both, driving technological innovation in transmission systems.

[0003] With the increasing use of internal combustion engines in agricultural machinery (such as the application of power take-off shafts in tractors), there is a need for transmission systems to efficiently transmit engine power to different working components (rotary tiller shafts, seeders, fertilizer applicators, etc.). Early transmission methods (such as belts and chains) lacked reliability under complex working conditions, so there is an urgent need for a transmission method that can operate with both high efficiency and stability. Summary of the Invention

[0004] The purpose of this utility model is to provide a transmission mechanism for a rotary tiller seeder that has a reasonable structural design, is easy to install, and achieves efficient operation.

[0005] The purpose of this utility model is achieved as follows: A transmission mechanism for a rotary tiller seeder includes a primary side gearbox and a secondary transmission box. The primary side gearbox includes an input gear, a large transition gear, an output gear a, a small transition gear set, and an output gear b. The input gear rotates to drive the large transition gear, which in turn drives the output gear a and the small transition gear set. The secondary transmission box includes a secondary input gear, an intermediate transmission gear set, and a secondary output gear. The secondary input gear is connected to the input gear via a chain, and the secondary input gear drives the intermediate transmission gear set to rotate and drive the secondary output gear.

[0006] As a further preferred embodiment of this utility model, the input gear is driven by the output shaft of the transmission machine, and a transmission shaft is connected to the output shaft of the transmission machine, the transmission shaft meshing with the input gear.

[0007] As a further preferred embodiment of this utility model, both the primary side gearbox and the secondary transmission box adopt cylindrical gears.

[0008] As a further preferred embodiment of this utility model, the transition pinion gear set includes two gears of the same size.

[0009] As a further preferred embodiment of this utility model, the intermediate transmission gear set includes seven gears of the same size arranged in sequence.

[0010] As a further preferred embodiment of this utility model, both the primary side gearbox and the secondary transmission box adopt a double gear disk.

[0011] Compared with the prior art, the beneficial effects of this utility model are as follows: 1. Gear transmission is a type of meshing transmission. The gear teeth are in direct contact with each other and have high meshing precision. The friction loss is small and the transmission efficiency can usually reach over 98%.

[0012] 2. Compared to belt drives (efficiency of about 92%-96%) or chain drives (efficiency of about 95%-98%), gear drives can make fuller use of the energy output by the engine when transmitting power, reducing power loss. They are especially suitable for composite operation scenarios such as rotary tillers that need to simultaneously complete rotary tillage (high load) and sowing (precision power).

[0013] 3. For seeders, a stable transmission ratio ensures that components such as seed metering devices and fertilizer applicators operate at precise speeds, avoiding problems such as uneven seeding and inconsistent plant spacing caused by speed fluctuations, thereby improving seeding accuracy and crop uniformity. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the technical description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 This is a schematic diagram of the transmission mechanism installed on a rotary tiller.

[0016] Figure 2 This is a schematic diagram of the transmission mechanism.

[0017] Figure 3 This is a diagram illustrating the operation of the transmission mechanism.

[0018] Figure 4 This is a schematic diagram of the structure of this utility model.

[0019] Among them, 1-first stage side gearbox: 101 input gear, 102 transition large gear, 103 output gear a, 104 transition small gear set, 105 output gear b; 2-second stage transmission box: 201 second stage input gear, 202 intermediate transmission gear set, 203 second stage output gear; 3-chain; 4-drive shaft; 5-transmission machine; 6-double gear disc. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. 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 skilled in the art without creative effort are within the protection scope of the present utility model.

[0021] like Figure 1-4 As shown, a transmission mechanism for a rotary tiller seeder includes a primary side gearbox 1 and a secondary transmission box 2. The primary side gearbox 1 includes an input gear 101, a transition large gear 102, an output gear a103, a transition small gear set 104, and an output gear b105. The input gear 101 rotates to drive the transition large gear 102, which in turn drives the output gear a103 and the transition small gear set 104. The secondary transmission box 2 includes a secondary input gear 201, an intermediate transmission gear set 202, and a secondary output gear 203. The secondary input gear 201 is connected to the input gear 101 via a chain 3, and the secondary input gear 201 drives the intermediate transmission gear set 202 to rotate and drive the secondary output gear 203.

[0022] Preferably, the input gear 101 is driven by the output shaft of the transmission machine 5, and the output shaft of the transmission machine 5 is connected to the transmission shaft 4, which meshes with the input gear 101.

[0023] Preferably, both the primary side gearbox 1 and the secondary transmission box 2 are made of cylindrical gears.

[0024] Preferably, the transition pinion 104 comprises two gears of the same size.

[0025] Preferably, the intermediate transmission gear set 202 includes seven gears of the same size arranged in sequence.

[0026] Preferably, both the primary side gearbox 1 and the secondary transmission box 2 adopt a double gear disk 6. Example

[0027] The side gearbox 1 is connected to the drive shaft 4. The transmission machine 5 outputs power to the drive shaft 4, which drives the input gear 101 to rotate. The input gear 101 drives the secondary input gear 201 to rotate via the chain 3. The secondary input gear 201 drives the intermediate transmission gear set 202. The gears in the intermediate transmission gear set 202 rotate sequentially until they mesh with the secondary output gear 203, which drives the press roller. The intermediate transmission gear set 202 drives the ground wheel to rotate, and the secondary output gear 203 drives the auger shaft to rotate. Example

[0028] Input gear 101 is the driving gear, which is carburized and quenched with 20CrMnTi (HRC58-62) to improve wear resistance; the other gears are driven gears and are quenched and tempered with 40Cr (HB220-250) to combine strength and impact resistance; both gears are avoided to have hard tooth surfaces (such as HRC>55), otherwise the tooth surface is prone to cracking during impact, so a combination of soft tooth surface and hard tooth surface is adopted.

[0029] Carburizing and quenching: suitable for gears that transmit torque >300 N·m, with a hardened layer depth of 0.8-1.2 mm; Nitriding treatment: suitable for precision gears (driven gears) in the seeding section, with a surface hardness of HV900+ and a deformation of <0.02mm.

[0030] The above description is only a specific embodiment of this utility model, but the protection scope of the utility model is not limited thereto. Any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of the utility model.

Claims

1. A transmission mechanism for a rotary tiller seeder, characterized in that, The system includes a primary side gearbox (1) and a secondary transmission box (2). The primary side gearbox (1) includes an input gear (101), a transition large gear (102), an output gear a (103), a transition small gear set (104), and an output gear b (105). The input gear (101) rotates to drive the transition large gear (102), and the transition large gear (102) drives the output gear a (103) and the transition small gear set (104) respectively. The secondary transmission box (2) includes a secondary input gear (201), an intermediate transmission gear set (202), and a secondary output gear (203). The secondary input gear (201) is connected to the input gear (101) through a chain (3), and the secondary input gear (201) drives the intermediate transmission gear set (202) to rotate and drive the secondary output gear (203).

2. The transmission mechanism of a rotary tiller seeder according to claim 1, characterized in that: The input gear (101) is driven by the output shaft of the transmission machine (5), and the output shaft of the transmission machine (5) is connected to the transmission shaft (4), which meshes with the input gear (101).

3. The transmission mechanism of a rotary tiller seeder according to claim 1, characterized in that: Both the primary side gearbox (1) and the secondary transmission box (2) use cylindrical gears.

4. The transmission mechanism of a rotary tiller seeder according to claim 1, characterized in that: The transition pinion (104) comprises two gears of the same size.

5. The transmission mechanism of a rotary tiller seeder according to claim 1, characterized in that: The intermediate transmission gear set (202) includes seven gears of the same size arranged in sequence.

6. The transmission mechanism of a rotary tiller seeder according to claim 1, characterized in that: Both the primary side gearbox (1) and the secondary transmission box (2) adopt a double gear disk (6).

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