Speed reducer for pivot steering crawler harvester, speed reduction method and harvester

Abstract

The invention provides a speed reducer for an in-situ steering crawler harvester, a speed reduction method and the harvester. A speed reducer for a pivot steering crawler harvester comprises a left driving mechanism, a right driving mechanism, a left reduction gearbox and a right reduction gearbox, the left driving mechanism is connected with the left reduction gearbox, and the right driving mechanism is connected with the right reduction gearbox.

Description

Technical Field

[0001] The present invention relates to the technical field of harvester steering, and particularly to a reducer for an in-situ steering crawler harvester, a deceleration method, and a harvester. Background Art

[0002] Existing crawler harvesters are divided into two types according to the steering type: non-in-situ steering type and in-situ steering type. Usually, the first non-in-situ steering method is adopted for the vehicle model. The specific steering strategy is as follows: by controlling the unilateral power cut-off and braking through the gearbox to achieve the locking of one crawler, and the other side drives forward or backward normally to realize the turning of the whole machine. This method requires a large turning radius, and it is difficult to turn in small plots such as hilly and mountainous areas, and the adaptability of the whole machine is poor. Another in-situ steering method mainly uses an electronic variable clutch control valve turning (eVCCT) mechanism to achieve the differential steering of the crawler combine harvester. This mechanism controls the forward and reverse clutches and the left and right steering clutches by controlling the oil supply of the hydraulic oil circuit to complete the forward and backward movement and turning of the vehicle. It is not only easy to operate and control, but also has high steering accuracy. However, due to the need for high-cleanliness hydraulic oil, the cost is relatively high. Another differential steering mechanism with a double hydrostatic transmission device as the core uses a steering wheel to control a conical link mechanism, and then links the swing arms of the two hydrostatic transmission devices to achieve the differential steering of the harvester. Its steering performance has been greatly improved, but the manufacturing accuracy and cost are relatively high. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to provide a reducer for an in-situ steering crawler harvester, a deceleration method, and a harvester in view of the deficiencies of the prior art.

[0004] The technical solution of the present invention for solving the above technical problem is as follows: A reducer for an in-situ steering crawler harvester includes: a left drive mechanism, a right drive mechanism, a left reduction gearbox, and a right reduction gearbox. The left drive mechanism is connected to the left reduction gearbox, and the right drive mechanism is connected to the right reduction gearbox.

[0005] The beneficial effect of adopting the technical solution of the present invention is: The forward and in-situ steering functions of the whole machine are realized by driving two reduction gearboxes with two input powers respectively. It has a compact structure, light weight, low cost, and is simple to manufacture, and can meet the needs of wheat and rice growers.

[0006] Further, the left drive mechanism is a left drive motor, and the right drive mechanism is a right drive motor.

[0007] The beneficial effect of adopting the above further technical solution is: The forward and in-situ steering functions of the whole machine are realized by driving two reduction gearboxes with two drive motors respectively. It has a compact structure, light weight, low cost, and is simple to manufacture, and can meet the needs of wheat and rice growers.

[0008] Further, the left driving mechanism and the right driving mechanism have the same structure; the left speed reducer and the right speed reducer have the same structure.

[0009] The beneficial effect of adopting the above further technical solution is that the left driving mechanism and the right driving mechanism have the same structure, and the transmission route and gear parameters of the right speed reducer are exactly the same as those of the left speed reducer. It is convenient for the installation and maintenance of the driving mechanism and the speed reducer, reduces costs, and is simple to manufacture.

[0010] Further, the output of the left driving mechanism is set to the left, and the output of the right driving mechanism is set to the right.

[0011] The beneficial effect of adopting the above further technical solution is that the left driving mechanism and the right driving mechanism are the same, only the installation directions are different. The output of the left driving mechanism is to the left, and the output of the right driving mechanism is to the right. The structure is compact, which is convenient for the installation and maintenance of the driving mechanism.

[0012] Further, the left speed reducer includes a first shaft, a second shaft and a third shaft. The left driving mechanism is connected to the first shaft. Gears are respectively installed on the first shaft and the third shaft. The second shaft is located between the first shaft and the third shaft. Two gears are provided on the second shaft. One gear on the second shaft meshes with the gear on the first shaft, and the other gear on the second shaft meshes with the gear on the third shaft.

[0013] The beneficial effect of adopting the above further technical solution is that the left speed reducer is provided with three shafts and two-stage transmission. The first shaft is connected to the left driving mechanism to realize power input. Two gears are installed on the second shaft to complete the transmission of power from input to output. The structure is simplified, which is convenient for the installation and maintenance of the speed reducer.

[0014] Further, a parking brake device is installed at the shaft end of the second shaft.

[0015] The beneficial effect of adopting the above further technical solution is that a parking brake device is installed at the shaft end of the second shaft to realize the parking brake function of the whole machine.

[0016] Further, a driving wheel for driving the crawler is installed at the outer end of the third shaft.

[0017] The beneficial effect of adopting the above further technical solution is that a driving wheel is installed at the outer end of the third shaft to directly drive the crawler.

[0018] Further, the left speed reducer is connected to the right speed reducer through a cross shaft.

[0019] The beneficial effect of adopting the above further technical solution is that the left and right speed reducers are connected together through a cross shaft. It is convenient for the installation and maintenance of the left speed reducer and the right speed reducer.

[0020] In addition, the present invention also provides a harvester, which includes a speed reducer for an in-situ steering crawler harvester described in any one of the above.

[0021] The beneficial effects of adopting the technical solution of the present invention are as follows: The forward movement and in-situ steering functions of the whole machine are realized by driving two reduction boxes with two input powers respectively. The structure is compact, the weight is light, the cost is low, and the manufacturing is simple, which can meet the needs of wheat and rice growers.

[0022] In addition, the present invention also provides a speed reduction method for a speed reducer for an in-situ steering crawler harvester. Based on the speed reducer for an in-situ steering crawler harvester described in any one of the above, the speed reduction method for the speed reducer for an in-situ steering crawler harvester includes: controlling the left drive mechanism and the right drive mechanism to output at the same speed in the opposite direction to realize the same-speed and same-direction operation of the two crawlers and drive the harvester to go straight; controlling the left drive mechanism and the right drive mechanism to output at different speeds in the opposite direction to realize the different-speed and same-direction operation of the two crawlers and drive the harvester to turn with a larger radius; controlling the left drive mechanism and the right drive mechanism to output at the same speed in the same direction to realize the same-speed and opposite-direction operation of the two crawlers and drive the harvester to turn in place; controlling the left drive mechanism and the right drive mechanism to output at different speeds in the same direction to realize the different-speed and opposite-direction operation of the two crawlers and drive the harvester to turn with a smaller radius.

[0023] The beneficial effects of adopting the technical solution of the present invention are as follows: The forward movement and in-situ steering functions of the whole machine are realized by driving two reduction boxes with two input powers respectively. The structure is compact, the weight is light, the cost is low, and the manufacturing is simple, which can meet the needs of wheat and rice growers.

[0024] Advantages of additional aspects of the present invention will be partially given in the following description, partially will become obvious from the following description, or be understood through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic structural diagram of a speed reducer for an in-situ steering crawler harvester provided by an embodiment of the present invention.

[0026] Explanation of reference numerals in the drawings: 1. Left drive mechanism; 2. Right drive mechanism; 3. Left reduction box; 4. Right reduction box; 5. First shaft; 6. Second shaft; 7. Third shaft; 8. Parking brake device; 9. Cross bridge. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0027] The principles and features of the present invention will be described below in conjunction with the accompanying drawings. The embodiments cited are only used to explain the present invention and are not intended to limit the scope of the present invention.

[0028] As Figure 1As shown in the figure, an embodiment of the present invention provides a reducer for an in-situ steering crawler harvester, including: a left drive mechanism 1, a right drive mechanism 2, a left reduction gearbox 3, and a right reduction gearbox 4. The left drive mechanism 1 is connected to the left reduction gearbox 3, and the right drive mechanism 2 is connected to the right reduction gearbox 4.

[0029] The beneficial effects of adopting the technical solution of the present invention are as follows: The forward movement and in-situ steering functions of the whole machine are realized by driving two reduction gearboxes with two input powers respectively. It has a compact structure, light weight, low cost, and is simple to manufacture, and can meet the needs of wheat and rice growers.

[0030] The present invention provides a reducer for an in-situ steering crawler harvester, which can be a two-stream reducer for an in-situ steering crawler harvester. The forward movement and in-situ steering functions of the whole machine (crawler harvester) are realized by driving two reduction gearboxes (left reduction gearbox and right reduction gearbox) with two input powers (left drive mechanism and right drive mechanism) respectively. It has a compact structure, light weight, low cost, and is easy to promote. It can meet the needs of crawler harvesting machinery, has a simple structure, is simple to manufacture, and can meet the needs of wheat and rice growers.

[0031] As Figure 1 shown in the figure, further, the left drive mechanism 1 is a left drive motor, and the right drive mechanism 2 is a right drive motor.

[0032] The beneficial effects of adopting the above further technical solution are as follows: The forward movement and in-situ steering functions of the whole machine are realized by driving two reduction gearboxes with two drive motors respectively. It has a compact structure, light weight, low cost, and is simple to manufacture, and can meet the needs of wheat and rice growers.

[0033] As Figure 1 shown in the figure, further, the left drive mechanism 1 and the right drive mechanism 2 have the same structure; the left reduction gearbox 3 and the right reduction gearbox 4 have the same structure.

[0034] The beneficial effects of adopting the above further technical solution are as follows: The left drive mechanism and the right drive mechanism have the same structure, and the transmission route and gear parameters of the right reduction gearbox are exactly the same as those of the left reduction gearbox. It is convenient for the installation and maintenance of the drive mechanism and the reduction gearbox, reduces costs, and is simple to manufacture.

[0035] As Figure 1 shown in the figure, further, the output of the left drive mechanism 1 is set to the left, and the output of the right drive mechanism 2 is set to the right.

[0036] The beneficial effects of adopting the above further technical solution are as follows: The left drive mechanism and the right drive mechanism are the same, only the installation directions are different. The output of the left drive mechanism is to the left, and the output of the right drive mechanism is to the right. It has a compact structure and is convenient for the installation and maintenance of the drive mechanism.

[0037] As Figure 1 shown, further, the left speed reducer 3 includes a first shaft 5, a second shaft 6 and a third shaft 7. The left drive mechanism 1 is connected to the first shaft 5. Gears are respectively installed on the first shaft 5 and the third shaft 7. The second shaft 6 is located between the first shaft 5 and the third shaft 7. Two gears are provided on the second shaft 6. One gear on the second shaft 6 meshes with the gear on the first shaft 5, and the other gear on the second shaft 6 meshes with the gear on the third shaft 7.

[0038] The beneficial effect of adopting the above further technical solution is that: the left speed reducer is provided with three shafts and two-stage transmission. The first shaft is connected to the left drive mechanism to realize power input. Two gears are installed on the second shaft to complete the transmission of power from input to output. The structure is simplified, which is convenient for the installation and maintenance of the speed reducer.

[0039] As Figure 1 shown, further, a parking brake device 8 is installed at the shaft end of the second shaft 6.

[0040] The beneficial effect of adopting the above further technical solution is that: a parking brake device is installed at the shaft end of the second shaft to realize the parking brake function of the whole machine.

[0041] As Figure 1 shown, further, a driving wheel for driving the crawler is installed at the outer end of the third shaft 7.

[0042] The beneficial effect of adopting the above further technical solution is that: a driving wheel is installed at the outer end of the third shaft to directly drive the crawler.

[0043] As Figure 1 shown, further, the left speed reducer 3 is connected to the right speed reducer 4 through a cross bridge 9.

[0044] The beneficial effect of adopting the above further technical solution is that: the left and right speed reducers are connected together through a cross bridge. It is convenient for the installation and maintenance of the left and right speed reducers.

[0045] A reducer for an in-situ steering crawler harvester provided by an embodiment of the present invention can be a harvester in which two speed reducers respectively drive the crawlers on both sides. It mainly includes components such as a left drive motor (left drive mechanism), a left speed reducer, a right drive motor (right drive mechanism), a right speed reducer, and a cross bridge.

[0046] Among them, the left and right drive motors (left drive mechanism and right drive mechanism) are exactly the same, only the installation directions are different. The output of the left drive motor is to the left, and the output of the right drive motor is to the right. The rotation direction of the motor can be calibrated with the observer facing the output shaft of the motor.

[0047] The left reduction gearbox assembly (left reduction gearbox) is provided with three shafts and two-stage transmission. The first shaft is connected to the driving motor (left driving mechanism) to achieve power input. Two gears are installed on the intermediate shaft (second shaft) to complete the transmission of power from input to output. A parking brake device is installed at the shaft end (which can be the shaft end of the second shaft) to achieve the parking brake function of the whole machine. The outer end of the third shaft is equipped with a driving wheel to directly drive the crawler.

[0048] The transmission route and gear parameters of the right reduction gearbox assembly (right reduction gearbox) are exactly the same as those of the left reduction gearbox assembly (left reduction gearbox).

[0049] The left and right reduction drive gearboxes (left reduction gearbox and right reduction gearbox) are connected together through a cross-over.

[0050] As an alternative to the above structure, a new type of double-flow reduction / transmission gearbox assembly can be formed by changing the number of gear transmission stages of the reduction gearbox or increasing the number of gear positions.

[0051] In addition, the present invention also provides a harvester, including a reducer for an in-situ steering crawler harvester described in any one of the above.

[0052] The beneficial effects of adopting the technical solution of the present invention are: the forward and in-situ steering functions of the whole machine are realized by driving two reduction gearboxes with two input powers respectively. The structure is compact, the weight is light, the cost is low, the manufacturing is simple, and it can meet the needs of wheat and rice growers.

[0053] In addition, the present invention also provides a reduction method for a reducer for an in-situ steering crawler harvester. Based on a reducer for an in-situ steering crawler harvester described in any one of the above, the reduction method for a reducer for an in-situ steering crawler harvester includes: controlling the left driving mechanism and the right driving mechanism to output at the same speed in the opposite direction to achieve the same-speed and same-direction operation of the two crawlers, and driving the harvester to go straight; controlling the left driving mechanism and the right driving mechanism to output at different speeds in the opposite direction to achieve the different-speed and same-direction operation of the two crawlers, and driving the harvester to turn with a larger radius; controlling the left driving mechanism and the right driving mechanism to output at the same speed in the same direction to achieve the same-speed and opposite-direction operation of the two crawlers, and driving the harvester to turn in place; controlling the left driving mechanism and the right driving mechanism to output at different speeds in the same direction to achieve the different-speed and opposite-direction operation of the two crawlers, and driving the harvester to turn with a smaller radius.

[0054] The beneficial effects of adopting the technical solution of the present invention are: the forward and in-situ steering functions of the whole machine are realized by driving two reduction gearboxes with two input powers respectively. The structure is compact, the weight is light, the cost is low, the manufacturing is simple, and it can meet the needs of wheat and rice growers.

[0055] Controlling the same-speed and opposite-direction output of the left and right motors (left driving mechanism and right driving mechanism) can achieve the same-speed and same-direction operation of the two crawlers, and drive the harvester (crawler harvester) to go straight.

[0056] By controlling the different-speed reverse output of the left and right motors, the same-speed forward operation of the two crawlers can be achieved, driving the harvester to turn with a larger radius.

[0057] By controlling the same-speed forward output of the left and right motors, the same-speed reverse operation of the two crawlers can be achieved, driving the harvester to turn in place.

[0058] By controlling the different-speed forward output of the left and right motors, the different-speed reverse operation of the two crawlers can be achieved, driving the harvester to turn with a smaller radius.

[0059] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A speed reducer for an in-situ steering crawler harvester, characterized in that, Comprising: A left drive mechanism, a right drive mechanism, a left reduction gearbox and a right reduction gearbox, wherein the left drive mechanism is connected to the left reduction gearbox, and the right drive mechanism is connected to the right reduction gearbox.

2. The speed reducer for an in-situ steering crawler harvester according to claim 1, characterized in that, The left drive mechanism is a left drive motor, and the right drive mechanism is a right drive motor.

3. A speed reducer for an in-situ steering crawler harvester according to claim 1, characterized in that, The left drive mechanism and the right drive mechanism have the same structure; the left reduction gearbox and the right reduction gearbox have the same structure.

4. A speed reducer for an in-situ steering crawler harvester according to claim 1, characterized in that, The output of the left drive mechanism is set to the left, and the output of the right drive mechanism is set to the right.

5. A speed reducer for an in-situ steering crawler harvester according to claim 1, characterized in that, The left reduction gearbox includes a first shaft, a second shaft and a third shaft. The left drive mechanism is connected to the first shaft. Gears are respectively installed on the first shaft and the third shaft. The second shaft is located between the first shaft and the third shaft. There are two gears on the second shaft. One gear on the second shaft meshes with the gear on the first shaft, and the other gear on the second shaft meshes with the gear on the third shaft.

6. A speed reducer for an in-situ steering crawler harvester according to claim 5, characterized in that, A parking brake device is installed at the shaft end of the second shaft.

7. A speed reducer for an in-situ steering crawler harvester according to claim 5, characterized in that, A drive wheel for driving a crawler is installed at the outer end of the third shaft.

8. A speed reducer for an in-situ steering crawler harvester according to claim 1, characterized in that, The left reduction gearbox is connected to the right reduction gearbox through a cross-over shaft.

9. A harvester, characterized in that, A reduction gearbox for an in-situ steering crawler harvester comprising any one of claims 1 to 8 above.

10. A deceleration method for a reducer of an in-situ steering crawler harvester, characterized in that, Based on a reduction gearbox for an in-situ steering crawler harvester according to any one of claims 1 to 8 above, the reduction method of the reduction gearbox for an in-situ steering crawler harvester includes: Controlling the left drive mechanism and the right drive mechanism to output at the same speed and in opposite directions to achieve the same-speed and same-direction operation of the crawlers on both sides, and driving the harvester to go straight; Controlling the left drive mechanism and the right drive mechanism to output at different speeds and in opposite directions to achieve the different-speed and same-direction operation of the crawlers on both sides, and driving the harvester to turn with a larger radius; Controlling the left drive mechanism and the right drive mechanism to output at the same speed and in the same direction to achieve the same-speed and opposite-direction operation of the crawlers on both sides, and driving the harvester to make an in-situ turn; Controlling the left drive mechanism and the right drive mechanism to output at different speeds and in the same direction to achieve the different-speed and opposite-direction operation of the crawlers on both sides, and driving the harvester to turn with a smaller radius.

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