Pull-type self-power-driven harrow

Abstract

The utility model relates to the technical field of agricultural implements, in particular to a traction type self-power-driven rake which comprises a frame used for being connected with a tractor, rake bodies connected to the periphery of the frame, a power device installed on the frame, a main gearbox connected with the power device, and a main transmission shaft connected with the main gearbox. The main transmission shaft is connected with a main transmission box with a plurality of output ends, the output ends of the main transmission box are connected with branch transmission shafts, and the branch transmission shafts are connected with branch gearboxes on the rake body. The rake body is independently powered by the power device and does not need to be powered by a power output shaft of a tractor, a working part becomes an independent unit relative to the tractor, the compaction effect of wheels of the tractor on soil is effectively reduced, and the problem that the power output shaft of the tractor is rigidly damaged when the tractor touches obstacles is solved; the rotating speed of the harrow teeth of the harrow body is not limited by the rotating speed of the power output shaft of the tractor, and the rotating speed of the harrow teeth of the harrow body can be adaptively changed according to different soil conditions.

Description

Technical Field

[0001] The utility model relates to the technical field of agricultural farming tools, in particular to a traction type self-powered driving harrow. Background Art

[0002] Most of the existing power-driven harrows adopt a three-point suspension connection method. The advantage of this structure is that it is flexible to turn in the field and can cover each corner when harrowing the land. However, this structural form also has certain defects. For example:

[0003] First, due to the heavy weight of the three-point suspension tractor itself and the weight of the driving harrow, it is easy to roll out relatively deep wheel grooves on the plowed ground, resulting in the harrow teeth being unable to operate to the bottom of the groove, and the soil is easily compacted, which is not conducive to water storage and plant rooting.

[0004] Second, the power source of the suspended power-driven harrow is the power output shaft of the tractor. The rotational speed and size of the power output shaft are fixed. There are many obstacles in the working environment of the driving harrow, which can generate a large alternating load, thus causing accidental damage to the output shaft. Moreover, as the power of the tractor increases, the diameter of the power output shaft thickens accordingly, and the transmission shaft also needs to change accordingly. There are many sizes, which brings troubles to agricultural production.

[0005] Third, the basic rotational speeds of the tractor power output shaft are 540, 760, 850, and 1000 rpm. The rotational speed of the driving harrow is constant. When ramming sandy soil and not particularly paying attention to soil fragmentation, the power consumption loses its economic value. When dealing with hard and sticky soil that requires a higher rotational speed and has a lower compaction requirement, the tractor power fails to meet the usage requirements.

[0006] Fourth, with the increasingly short sowing period, more and larger tractors are needed, which is a heavy burden on agriculture. To make efficient use of the large number of medium and large horsepower (150 - 220 horsepower) tractors in stock, the tillage machinery needs to be updated. Content of the Utility Model

[0007] In order to solve the problems existing in the above-mentioned prior art and adapt to more complex soil operation environments, the utility model provides a traction type self-powered driving harrow.

[0008] The traction type self-powered driving harrow provided by the utility model adopts the following technical scheme:

[0009] A traction type self-powered driving harrow includes a frame for connecting a tractor. A harrow body is connected around the frame. A power device is installed on the frame. The power device is connected to a main gearbox. The main gearbox is connected to a main transmission shaft. The main transmission shaft is connected to a main transmission case with multiple output ends. The output ends of the main transmission case are connected to sub-transmission shafts. The sub-transmission shafts are connected to sub-gearboxes on the harrow body.

[0010] By adopting the above technical solution, the harrow body is independently powered by a power device, without the need for the power take-off shaft of the tractor to provide power. The working part becomes an independent unit relative to the tractor, effectively reducing the compaction effect of the tractor wheels on the soil and solving the problem of hard damage to the power take-off shaft of the tractor caused by hitting obstacles. The rotational speed of the harrow teeth of the harrow body will also not be limited by the rotational speed of the power take-off shaft of the tractor, and the rotational speed of the harrow teeth of the harrow body can be adaptively changed according to different soil conditions.

[0011] Optionally, a depth-limiting wheel set is installed at the bottom of the frame.

[0012] By adopting the above technical solution, the depth-limiting wheel set can effectively control the harrowing depth.

[0013] Optionally, the main transmission box is a T-shaped transmission box, and harrow bodies are arranged on both the left and right sides and the rear side of the frame.

[0014] By adopting the above technical solution, the tractor can drive three harrow bodies to travel side by side through the frame, effectively increasing the single-pass tillage width area and improving the operation efficiency.

[0015] Optionally, the power device is an engine or an electric motor.

[0016] In summary, the present utility model includes at least one of the following beneficial technical effects:

[0017] 1. The harrow body is independently powered by a power device, without the need for the power take-off shaft of the tractor to provide power. The working part becomes an independent unit relative to the tractor, effectively reducing the compaction effect of the tractor wheels on the soil and solving the problem of hard damage to the power take-off shaft of the tractor caused by hitting obstacles.

[0018] 2. The rotational speed of the harrow teeth of the harrow body will also not be limited by the rotational speed of the power take-off shaft of the tractor, and the rotational speed of the harrow teeth of the harrow body can be adaptively changed according to different soil conditions.

[0019] 3. The tractor can drive three harrow bodies to travel side by side through the frame, effectively increasing the single-pass tillage width area and improving the operation efficiency.

[0020] 4. A small-horsepower tractor can complete the work that only a large-horsepower tractor can do, realizing the efficient utilization of medium and large-horsepower tractors and reducing the huge investment in large-horsepower tractors. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic structural view of the traction type self-powered drive harrow of the present utility model.

[0022] Description of reference numerals: 1. Frame; 2. Harrow body; 20. Sub-transmission; 3. Power device; 4. Main transmission; 5. Main drive shaft; 6. Main drive box; 7. Sub-drive shaft; 8. Depth-limiting wheel set. Specific implementation manners

[0023] The following further elaborates on the present utility model with reference to the attached Figure 1 drawings.

[0024] An embodiment of the present utility model discloses a traction type self-powered driven harrow. Referring to Figure 1 , the traction type self-powered driven harrow includes a frame 1, and the frame 1 is used for connecting to a tractor; on both the left and right sides and the rear side of the frame 1, a harrow body 2 is connected, and the working directions of the three harrow bodies 2 are the same; a power device 3 is installed on the frame 1, and the power device 3 in this embodiment is an engine, and in other embodiments, a motor can also be selected, which is not limited herein.

[0025] Referring to Figure 1 , the output shaft of the power device 3 is connected to a main transmission 4, the output end of the main transmission 4 is connected to a main drive shaft 5, the output end of the main drive shaft 5 is connected to a main drive box 6, the main drive box 6 in this embodiment is a T-shaped drive box, and on each of the three output ends of the main drive box 6, a sub-drive shaft 7 is connected, the sub-drive shaft 7 is connected to the sub-transmission 20 of the harrow body 2, and a depth-limiting wheel set 8 is also installed at the bottom of the frame 1.

[0026] The implementation principle of the traction type self-powered driven harrow in the embodiment of the present utility model is as follows: The tractor drives the three harrow bodies 2 to travel side by side through the frame 1, effectively increasing the single tillage area and improving the operation efficiency; the harrow body 2 is independently powered by the power device 3, without the need for the power output shaft of the tractor to provide power, and the working part becomes an independent unit relative to the tractor, effectively reducing the compaction effect of the tractor wheels on the soil body and solving the problem of hard damage to the power output shaft of the tractor when touching obstacles; the rotation speed of the harrow teeth of the harrow body 2 will also not be limited by the rotation speed of the power output shaft of the tractor, and can be adaptively changed according to different soil conditions.

[0027] The above are all the preferred embodiments of the present utility model, and the protection scope of the present utility model is not limited thereby. Therefore, all equivalent changes made according to the structure, shape, and principle of the present utility model should be covered within the protection scope of the present utility model.

Claims

1. A traction type self-powered driving harrow, characterized in that: It includes a frame (1) for connecting a tractor, a harrow body (2) is connected around the frame (1), a power device (3) is installed on the frame (1), the power device (3) is connected to a main gearbox (4), the main gearbox (4) is connected to a main transmission shaft (5), the main transmission shaft (5) is connected to a main transmission case (6) with multiple output ends, the output ends of the main transmission case (6) are connected to branch transmission shafts (7), and the branch transmission shafts (7) are connected to branch gearboxes (20) on the harrow body (2).

2. The traction type self-powered driving harrow according to claim 1, characterized in that: A depth-limiting wheel set (8) is installed at the bottom of the frame (1).

3. The traction type self-powered driving harrow according to claim 1, characterized in that: The main transmission case (6) is a T-shaped transmission case, and harrow bodies (2) are arranged on both the left and right sides and the rear side of the frame (1).

4. The traction type self-powered driving harrow according to claim 1, characterized in that: The power device (3) is an engine or an electric motor.

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