Drive harrow variable transmission mechanism

Abstract

The utility model discloses a drive harrow variable speed transmission mechanism belongs to ploughing mechanical technical field, including the gear box of L type structure, gear box interior installation has first transmission shaft and second transmission shaft, and first transmission shaft is connected with tractor's rear output shaft transmission, and second transmission shaft is connected with motor's output shaft transmission, and first transmission shaft is installed with the ploughing knife main shaft that is connected with its transmission between second transmission shaft, and ploughing knife main shaft can synthesize after the power of first transmission shaft and second transmission shaft input and export. The utility model provides a drive harrow variable speed transmission mechanism, can guarantee tractor engine always in high -efficient, economic work area, can also according to the stepless regulation ploughing knife rotating speed of operation demand.

Description

Technical Field

[0001] This utility model relates to a drive harrow speed change transmission mechanism, belonging to the field of tillage machinery technology. Background Technology

[0002] A drive harrow is a tillage machine that is pulled and driven by a tractor to complete the soil breaking and harrowing operation. Due to its advantages such as strong soil adaptability and good soil breaking effect, drive harrows are widely used in field operations. The PTO shaft of the tractor transmits power to the drive harrow through the gearbox, driving it to work.

[0003] Traditional drive harrows are powered solely by the tractor's rear output shaft, and the blade speed is rigidly linked to the tractor engine speed. Changing the blade speed requires adjusting the engine throttle, which leads to two drawbacks: Poor fuel economy: When lower blade speeds are required but higher driving speeds are needed, or when fine adjustments to blade speeds are needed to adapt to different soil resistances, the engine may not be able to operate in the speed range where fuel efficiency is highest.

[0004] Inconvenient operation and inaccurate speed control: The speed of the tiller blades is changed by adjusting the throttle, but the response is slow and the speed control is inaccurate and unstable, making it impossible to achieve linear fine-tuning.

[0005] In conclusion, the existing technology obviously has inconveniences and defects in practical use, so it is necessary to improve it. Utility Model Content

[0006] This utility model addresses the shortcomings of the prior art by providing a drive harrow speed transmission mechanism that can ensure the tractor engine is always in a high-efficiency and economical operating range, while also steplessly adjusting the tillage blade speed according to operational needs.

[0007] To solve the above technical problems, the present invention adopts the following technical solution: The drive harrow transmission mechanism includes an L-shaped gearbox housing, inside which a first drive shaft and a second drive shaft are installed. The first drive shaft is connected to the rear output shaft of the tractor, and the second drive shaft is connected to the output shaft of the motor. A tillage blade spindle is installed between the first and second drive shafts and is connected to them. The tillage blade spindle can combine the power input from the first and second drive shafts and output it.

[0008] Furthermore, the first drive shaft, the second drive shaft, and the tiller spindle are all arranged in a vertical direction.

[0009] Furthermore, the two ends of the first drive shaft are rotatably mounted on the bottom and top walls of the gearbox via bearings. The first drive shaft and the rear output shaft are driven by a bevel gear set, and the rear output shaft is rotatably mounted on the side wall of the gearbox via bearings.

[0010] Furthermore, a first transmission gear is mounted on the main body of the first transmission shaft.

[0011] Furthermore, a second transmission gear is mounted on the main body of the second transmission shaft.

[0012] Furthermore, a third transmission gear is installed on the upper part of the main body of the tiller spindle, which meshes with the first and second transmission gears.

[0013] Furthermore, the bottom end of the second drive shaft is rotatably mounted on the bottom wall of the gearbox via a bearing, and the top end of the second drive shaft is rotatably mounted on the bottom of the motor mount via a bearing. The motor mount is fixed to the top of the gearbox via bolts, and a coupling is provided inside the motor mount to connect the output shaft of the motor to the drive shaft.

[0014] Furthermore, the motor is bolted to the top of the motor mount.

[0015] Furthermore, the tiller spindle is rotatably mounted on the bottom of the gearbox cavity via a tapered roller bearing, with the upper part of the main body of the tiller spindle located inside the gearbox and the lower part of the main body of the tiller spindle located outside the gearbox.

[0016] Furthermore, a fourth transmission gear is installed on the lower part of the main body of the tiller spindle.

[0017] Compared with the prior art, the present invention, by adopting the above technical solution, has the following advantages: This invention can combine the power from two independent power sources and synthesize it onto the tiller spindle. The power is then distributed to the tiller sub-shafts on both sides through the fourth transmission gear at the lower part of the tiller spindle, ultimately driving all tiller components to work. The tractor engine provides basic and powerful main drive power through the rear output shaft, while the electric motor provides precise and fast adjustable auxiliary drive power. This invention can continuously and smoothly adjust the speed of the final tiller without changing the speed of the tractor engine.

[0018] The present invention will now be described in detail with reference to the accompanying drawings and embodiments. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a schematic diagram of the internal structure of this utility model.

[0020] In the diagram, 1-gearbox body, 2-first drive shaft, 3-second drive shaft, 4-tiller spindle, 5-first drive gear, 6-second drive gear, 7-third drive gear, 8-rear output shaft, 9-bevel gear set, 10-motor base, 11-motor, 12-coupling, 13-tapered roller bearing, 14-fourth drive gear. Detailed Implementation

[0021] To provide a clearer understanding of the technical features, objectives, and effects of this utility model, the specific embodiments of this utility model are now described with reference to the accompanying drawings.

[0022] like Figure 1 and Figure 2 As shown in the figure, this utility model provides a drive harrow transmission mechanism, including an L-shaped gearbox 1. A first drive shaft 2 and a second drive shaft 3 are installed inside the gearbox 1. The first drive shaft 2 is connected to the rear output shaft 8 of the tractor, and the second drive shaft 3 is connected to the output shaft of the motor 11. A tillage blade spindle 4 is installed between the first drive shaft 2 and the second drive shaft 3 and is connected to them. The tillage blade spindle 4 can combine the power input from the first drive shaft 2 and the second drive shaft 3 and output it.

[0023] The first drive shaft 2, the second drive shaft 3, and the tiller spindle 4 are all arranged in a vertical direction.

[0024] The two ends of the first drive shaft 2 are rotatably mounted on the bottom and top walls of the gearbox 1 via bearings. The first drive shaft 2 is connected to the rear output shaft 8 via a bevel gear set 9. The rear output shaft 8 is rotatably mounted on the side wall of the gearbox 1 via bearings.

[0025] The first transmission gear 5 is mounted on the main body of the first transmission shaft 2.

[0026] The bottom end of the second drive shaft 3 is rotatably mounted on the bottom wall of the gearbox 1 via a bearing, and the top end of the second drive shaft 3 is rotatably mounted on the bottom of the motor base 10 via a bearing. The motor base 10 is fixed to the top of the gearbox 1 by bolts. A coupling 12 is provided inside the motor base 10, which connects the output shaft of the motor 11 to the drive shaft 3.

[0027] The motor 11 is fixed to the top of the motor base 10 by bolts.

[0028] The second transmission gear 6 is mounted on the main body of the second transmission shaft 3.

[0029] The tillage blade spindle 4 is rotatably mounted on the bottom of the inner cavity of the gearbox 1 via a tapered roller bearing 13. The upper part of the main body of the tillage blade spindle 4 is located inside the gearbox 1, and the lower part of the main body of the tillage blade spindle 4 is located outside the gearbox 1.

[0030] The upper part of the main body of the tiller spindle 4 is equipped with a third transmission gear 7 that meshes with the first transmission gear 5 and the second transmission gear 6.

[0031] The lower part of the main body of the tiller spindle 4 is equipped with a fourth transmission gear 14. The fourth transmission gear 14 can transmit the power of the tiller spindle 4 to both sides and to multiple tiller sub-spindles on both sides. Tillage assemblies are installed at the bottom of both the tiller spindle 4 and the tiller sub-spindles.

[0032] The specific working principle of this utility model is as follows: This invention combines the power from two independent power sources (the tractor's rear output shaft and the electric motor) and integrates it onto the tiller main shaft. The power is then distributed to the tiller sub-shafts on both sides via the fourth transmission gear at the bottom of the tiller main shaft, ultimately driving all tiller components. Power source one is the tractor engine, providing basic and powerful main drive power through the rear output shaft; power source two is the electric motor, providing precisely and quickly adjustable auxiliary drive power. This invention allows for continuous and smooth adjustment of the final tiller speed without changing the tractor engine speed (i.e., maintaining optimal fuel economy and power output).

[0033] The above description provides examples of the preferred embodiments of this utility model. Any aspects not detailed herein are common knowledge to those skilled in the art. The scope of protection of this utility model is determined by the claims. Any equivalent modifications based on the technical teachings of this utility model are also within the scope of protection of this utility model.

Claims

1. A drive rake speed change transmission mechanism, characterized in that: The gearbox (1) includes an L-shaped gearbox housing. Inside the gearbox housing (1) are installed a first drive shaft (2) and a second drive shaft (3). The first drive shaft (2) is connected to the rear output shaft (8) of the tractor, and the second drive shaft (3) is connected to the output shaft of the motor (11). A tillage spindle (4) is installed between the first drive shaft (2) and the second drive shaft (3) and is connected to them. The tillage spindle (4) can combine the power input from the first drive shaft (2) and the second drive shaft (3) and output it.

2. The drive rake speed change transmission mechanism as described in claim 1, characterized in that: The first drive shaft (2), the second drive shaft (3), and the tiller spindle (4) are all set in the vertical direction.

3. The drive rake speed change transmission mechanism as described in claim 1, characterized in that: The two ends of the first drive shaft (2) are rotatably mounted on the bottom and top walls of the gearbox body (1) through bearings. The first drive shaft (2) and the rear output shaft (8) are driven by a bevel gear set (9). The rear output shaft (8) is rotatably mounted on the side wall of the gearbox body (1) through bearings.

4. The drive rake speed change transmission mechanism as described in claim 1, characterized in that: The first transmission gear (5) is mounted on the main body of the first transmission shaft (2).

5. The drive rake speed change transmission mechanism as described in claim 4, characterized in that: The second transmission gear (6) is mounted on the main body of the second transmission shaft (3).

6. The drive rake speed change transmission mechanism as described in claim 5, characterized in that: The upper part of the main body of the tiller spindle (4) is equipped with a third transmission gear (7) that meshes with the first transmission gear (5) and the second transmission gear (6).

7. The drive rake speed change transmission mechanism as described in claim 1, characterized in that: The bottom end of the second drive shaft (3) is rotatably mounted on the bottom wall of the gearbox (1) via a bearing, and the top end of the second drive shaft (3) is rotatably mounted on the bottom of the motor base (10) via a bearing. The motor base (10) is fixed to the top of the gearbox (1) by bolts. The motor base (10) is equipped with a coupling (12) inside, which connects the output shaft of the motor (11) to the drive shaft (3).

8. The drive rake speed change transmission mechanism as described in claim 7, characterized in that: The motor (11) is fixed to the top of the motor base (10) by bolts.

9. The drive rake speed change transmission mechanism as described in claim 1, characterized in that: The tillage blade spindle (4) is rotatably mounted on the bottom of the inner cavity of the gearbox (1) via a tapered roller bearing (13). The upper part of the main body of the tillage blade spindle (4) is located inside the gearbox (1), and the lower part of the main body of the tillage blade spindle (4) is located outside the gearbox (1).

10. The drive rake speed change transmission mechanism as described in claim 1, characterized in that: The lower part of the main body of the tiller spindle (4) is equipped with a fourth transmission gear (14).

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