A walking chassis of a regenerated rice combine harvester and a regenerated rice combine harvester

Abstract

A walking chassis of a regenerated rice combine harvester and a regenerated rice combine harvester, belonging to the technical field of regenerated rice combine harvesters. The utility model includes a chassis frame, left and right walking wheel trains, rubber tracks, a walking gearbox, and a continuously variable transmission. The left and right walking wheel trains are arranged on both sides of the chassis frame, and two rubber tracks are sleeved on the left and right walking wheel trains. The walking gearbox and the continuously variable transmission are arranged on the chassis frame. The width of the rubber track is less than the regenerated rice planting row spacing, and the center distance of the two rubber tracks is an integer multiple of the regenerated rice planting row spacing. The walking gearbox has a built-in differential steering module. The utility model has a linear rolling rate close to zero for rice stubble, thereby ensuring the second season yield of regenerated rice.

Description

Technical Field

[0001] The utility model relates to the technical field of regenerated rice combine harvesters, in particular to a walking chassis of a regenerated rice combine harvester and the regenerated rice combine harvester. Background Art

[0002] The existing traditional combine harvesters are not suitable for the first season harvesting of regenerated rice because their crushing rate is generally higher than 45%. To reduce the linear crushing rate, the most direct way is to reduce the width of the matching crawler. However, the reduction in the crawler width will inevitably increase the average ground contact pressure of the whole machine, which will reduce the passability of paddy fields, especially in hilly and mountainous areas with complex ground conditions. In addition, the steering method of traditional combine harvesters adopts unilateral braking, that is, when turning, one side of the crawler is driven by the other side of the crawler to perform rotation and sliding motion, which is very serious for the crushing of rice stubble. Therefore, it is difficult for traditional combine harvesters to ensure the linear crushing rate of rice stubble, which means that the second season yield of regenerated rice cannot be guaranteed.

[0003] In the prior art, for example, the Chinese utility model patent with patent number ZL202223496121.9 discloses a harvesting device for mechanically harvesting and storing regenerated rice in hilly areas, which reduces the rolling range of the field surface by controlling the width of the crawler, the ground contact length and the distance between the two crawlers, thereby reducing the contact area with the regenerated rice buds and reducing the rolling rate. However, it still cannot avoid the rolling of rice stubble, and the second season yield of regenerated rice needs to be improved. Utility Model Content

[0004] The purpose of the utility model is to solve the problems existing in the above-mentioned prior art and to provide a walking chassis of a regenerated rice combine harvester and a regenerated rice combine harvester, which has a linear crushing rate of rice stubble close to zero, thereby ensuring the second season yield of regenerated rice.

[0005] The purpose of this utility model is achieved through the following technical solutions:

[0006] A walking chassis of a regenerated rice combine harvester comprises a chassis frame, left and right walking wheel trains, rubber tracks, a walking gearbox, and a continuously variable transmission. The left and right walking wheel trains are arranged on both sides of the chassis frame, two rubber tracks are sleeved on the left and right walking wheel trains, the walking gearbox and the continuously variable transmission are arranged on the chassis frame, the width of the rubber tracks is smaller than the regenerated rice planting row spacing, the center distance of the two rubber tracks is an integral multiple of the regenerated rice planting row spacing, and the walking gearbox has a built-in differential steering module.

[0007] As a preferred embodiment of the present invention, the left and right walking wheel systems include a driving wheel, supporting rollers and guide wheels, and there are multiple supporting rollers, two of which are arranged at the front and rear ends and are higher than the supporting rollers between the two.

[0008] As a preferred embodiment of the present invention, the two supporting rollers disposed at the front and rear ends are at least 3 mm higher than the supporting roller between the two.

[0009] As a preferred embodiment of the present invention, the spacing between adjacent supporting wheels is not equal to an integer multiple of the pitch of the rubber track.

[0010] As a preferred embodiment of the present invention, a balance wheel is provided in the middle of the plurality of supporting wheels, and the diameter of the balance wheel is smaller than the diameter of the supporting wheels.

[0011] As a preferred embodiment of the present invention, the engagement angle of the rubber track is 50°~60°.

[0012] As a preferred embodiment of the present invention, the distance between the travel gearbox and the ground is at least 30 centimeters.

[0013] The utility model also provides a regenerated rice combine harvester, comprising a harvesting platform, a threshing and separation part, a grain cleaning part, a grain storage and unloading part, a threshed straw powder throwing part, and the regenerated rice combine harvester walking chassis as described above.

[0014] The utility model has the following advantages over the prior art:

[0015] Because the track width of this walking chassis is smaller than the row spacing of regenerated rice, and the center distance between the two tracks is an integer multiple of the row spacing of regenerated rice, both tracks will not press on or only slightly press on the regenerated rice stubble when walking in a straight line, so as to basically achieve the minimum rolling effect with a straight-line rolling rate close to zero, which can effectively guarantee the second season yield of regenerated rice. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 An axonometric view of a walking chassis of a regenerated rice combine harvester provided in this embodiment:

[0017] Figure 2 A left view of a walking chassis of a regenerated rice combine harvester provided in this embodiment:

[0018] Figure 3 A front view of a walking chassis of a regenerated rice combine harvester provided in this embodiment;

[0019] In the figure: 1-chassis frame; 1a-supporting beam; 2-left and right walking wheel system; 2a-driving wheel; 2b1, 2b2, 2b3, 2b4-supporting wheels; 2c-balancing wheel; 2d-guide wheel; 3-travel gearbox; 4-continuously variable transmission; 5-rubber track. DETAILED DESCRIPTION

[0020] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0021] like Figure 1-3 As shown, this embodiment provides a walking chassis for a regenerated rice combine harvester, including a chassis frame 1, left and right walking wheel trains 2, rubber tracks 5, a walking gearbox 3, and a continuously variable transmission 4. The left and right sides of the chassis frame 1 are provided with supporting beams 1a, and the left and right walking wheel trains 2 are installed on the supporting beams 1a on the left and right sides. Two rubber tracks 5 are respectively mounted on the left and right walking wheel trains 2. The walking gearbox 3 and the continuously variable transmission 4 are installed at the middle position of the chassis frame 1. Figure 3 As shown, in order to reduce or even avoid the linear rolling rate of the walking chassis for the rice stubble, the width D of the rubber crawler 5 is less than the row spacing of the regenerated rice planting, and the center distance B of the two rubber crawlers 5 is an integer multiple of the row spacing of the regenerated rice planting, so that when the walking chassis is walking, the rubber crawlers 5 on both sides can always be between two adjacent rows of rice stubble to avoid rolling the rice stubble. Specifically, the transplanting row spacing of the four-row and six-row rice transplanters on the market is 30 cm, so the width D of the rubber crawler 5 needs to be less than 300 mm, and considering the factors such as the deviation of the regenerated rice planting position and the deviation of the harvester walking route, the width D of the rubber crawler 5 is preferably not more than 280 mm. The center distance B of the two rubber crawlers 5 is an integer multiple of 30 cm, such as 90 cm, 120 cm, 150 cm, etc. In addition, the driving form of the walking chassis is a combination of a continuously variable transmission 4 and a walking gearbox 3, which is more stable and gentle in walking, the speed is steplessly adjustable, and the walking route is easier to adjust to avoid rolling the rice stubble, which is particularly suitable for safe walking in hilly and mountainous areas. Furthermore, considering the problem of crushing the rice stubble when the harvester turns, the travel gearbox 3 has a built-in differential steering module to realize the differential steering function of the rubber tracks on both sides. Compared with the existing unilateral braking steering method, this steering method can reduce the crushing rate of the rice stubble as much as possible.

[0022] like Figure 2 As shown, the left and right walking wheel trains 2 include a driving wheel 2a at the front upper part, four supporting rollers 2b1, 2b2, 2b3 and 2b4 bearing the load in the middle, a balancing wheel 2c arranged in the middle of the four supporting rollers, and a guide wheel 2d at the rear, wherein the diameter of the balancing wheel 2c is smaller than the diameter of the supporting rollers, mainly to match the ridge and mitigate the impact of crossing the ridge. It should be noted that in this embodiment, there are two supporting rollers before and after the balancing wheel 2c, but the number of supporting rollers is not limited to four, for example, two and three supporting rollers can be arranged before and after the balancing wheel 2c, respectively, or three supporting rollers can be arranged before and after the balancing wheel 2c, etc.

[0023] In order to make the walking chassis on hard ground and turn more smoothly, and ensure the efficiency of the harvester's frequent transfer in hilly and mountainous areas, the two supporting rollers 2b1 and 2b4, which are respectively arranged at the front and rear ends, are at least 3 mm higher than the supporting rollers 2b3 and 2b4 between them. In order to avoid or reduce the bumps and vibrations during the walking of the harvester, thereby improving the walking stability, the spacing between adjacent supporting rollers is not equal to an integer multiple of the pitch of the rubber track. In this embodiment, the pitch of the rubber track is 9 cm. Therefore, the spacing between each adjacent supporting roller, that is, h1, h2 and h3 in the figure, cannot be an integer multiple of 9 cm.

[0024] In order to make the traveling chassis have strong climbing ability and as long a contact area as possible with the same number of track sections, the angle of contact α of the rubber track 5 is 50° to 60°.

[0025] Finally, if Figure 3 As shown, in order to increase the road passability in hilly and mountainous areas, the ground clearance g of the travel gearbox is at least 30 cm.

[0026] The utility model also provides a regenerated rice combine harvester, comprising a harvesting platform, a threshing and separation part, a grain cleaning part, a grain storage and unloading part, a threshed straw powder throwing part, and the regenerated rice combine harvester walking chassis as described above.

[0027] The above is only a preferred specific implementation of the utility model, which is an implementation method based on the overall concept of the utility model, and the protection scope of the utility model is not limited to this. Any changes or replacements that can be easily thought of by any technician familiar with the technical field within the technical scope disclosed by the utility model should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope of the claims.

Claims

1. A walking chassis for a regenerated rice combine harvester, comprising a chassis frame, left and right walking wheel trains, rubber tracks, a walking gearbox, and a continuously variable transmission, wherein the left and right walking wheel trains are arranged on both sides of the chassis frame, two rubber tracks are sleeved on the left and right walking wheel trains, and the walking gearbox and the continuously variable transmission are arranged on the chassis frame, characterized in that: The width of the rubber crawler is smaller than the row spacing of the regenerated rice, the center distance between the two rubber crawlers is an integer multiple of the row spacing of the regenerated rice, and the travel gearbox has a built-in differential steering module.

2. The walking chassis of a regenerated rice combine harvester according to claim 1, characterized in that: The left and right walking wheel systems include a driving wheel, supporting wheels and guide wheels. There are multiple supporting wheels, and two supporting wheels arranged at the front and rear ends are higher than the supporting wheels between the two.

3. The walking chassis of a regenerated rice combine harvester according to claim 2, characterized in that: The two supporting rollers arranged at the front and rear ends are at least 3 mm higher than the supporting roller between the two.

4. The walking chassis of a regenerated rice combine harvester according to claim 2, characterized in that: The spacing between adjacent supporting wheels is not equal to an integral multiple of the pitch of the rubber track.

5. The walking chassis of a regenerated rice combine harvester according to claim 2, characterized in that: A balance wheel is provided in the middle of the plurality of supporting wheels, and the diameter of the balance wheel is smaller than the diameter of the supporting wheels.

6. The walking chassis of a regenerated rice combine harvester according to claim 1, characterized in that: The angle of engagement of the rubber track is 50° to 60°.

7. The walking chassis of a regenerated rice combine harvester according to claim 1, characterized in that: The distance between the travel gearbox and the ground is at least 30 centimeters.

8. A regenerated rice combine harvester, characterized in that: The invention comprises a harvesting platform, a threshing and separation part, a grain cleaning part, a grain storage and unloading part, a threshed straw crushing and scattering part, and a walking chassis of a regenerated rice combine harvester as claimed in any one of claims 1 to 7.

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