A rear-drive tracked chassis and combine harvester

Abstract

This application discloses a rear-drive tracked chassis and combine harvester in the field of agricultural machinery technology, aiming to solve the problems of poor maintenance convenience and unbalanced weight distribution in existing harvesters. It includes a frame, with an engine located at the front and a gearbox at the rear, and a tracked running gear structure at the lower part of the frame; the engine and gearbox are connected by a hydraulic drive structure. This invention's tracked chassis removes the gearbox from the confined front space and places it at the rear of the vehicle, increasing maintenance space; the hydraulic drive connection between the engine and gearbox improves transmission efficiency and extends the lifespan of both the engine and gearbox. Fixed below and behind the cab, this invention shifts the harvester's center of gravity rearward, helping to reduce the nose-down amplitude during sudden stops, thereby reducing the likelihood of nose-diving.

Description

Technical Field

[0001] This utility model relates to the field of agricultural machinery technology, and in particular to a rear-drive tracked chassis and a combine harvester. Background Technology

[0002] The existing combine harvesters use a mechanical gearbox or a hydraulic continuously variable transmission (CVT) plus a gearbox for travel. The gearbox distributes power input to the drive half-shafts at both ends, and the speed of the drive half-shafts is changed to achieve differential steering.

[0003] Its shortcomings are: the gearbox is located at the front, a belt is needed for power transmission between the engine and the gearbox, the cutting table is located at the front, the belt is a vulnerable part, and the maintenance space is small. Utility Model Content

[0004] The purpose of this application is to provide a rear-drive tracked chassis and combine harvester, which reduces the difficulty of harvester chassis maintenance and helps solve the problems of overall weight imbalance and redundant transmission layout of the harvester.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] In a first aspect, this utility model discloses a rear-drive tracked chassis, including a frame, an engine at the front of the frame, a gearbox at the rear of the frame, and a tracked running structure at the lower part of the frame.

[0007] The engine and the gearbox are connected by a hydraulic drive structure.

[0008] The above technical solution removes the gearbox from the cramped front space and places it at the rear of the vehicle, increasing maintenance space; the hydraulic drive structure connecting the engine and gearbox improves transmission efficiency and extends the life of both the engine and gearbox.

[0009] Furthermore, the tracked walking structure includes a support roller and a guide roller connected to the frame, and the support roller and the guide roller are provided with meshing tracks on their outer peripheries.

[0010] The above technical solutions reduce the maintenance difficulty of the harvester chassis transmission and help solve the problems of overall weight imbalance and redundant transmission layout of the harvester.

[0011] Furthermore, the tracked walking structure also includes a guide rail that is assembled and connected to the frame, and the guide rail is located below the support roller.

[0012] In the above technical solution, the guide rail cooperates with the support roller to prevent the track from derailing.

[0013] Furthermore, the hydraulic drive structure includes: a travel pump assembly and a hydraulic motor; the travel pump assembly is mounted at the front end of the engine, the hydraulic motor is mounted on the gearbox, the power input end of the travel pump assembly is connected to the power output end of the engine, the oil outlet of the travel pump assembly is connected to the oil inlet of the hydraulic motor, and the power output end of the hydraulic motor is connected to the power input end of the gearbox.

[0014] Furthermore, the oil outlet of the walking pump assembly is connected to the oil inlet of the hydraulic motor via a hydraulic pipeline.

[0015] The above technical solution changes the original belt drive method to a hydraulic pipeline connection, reducing the number of vulnerable parts, improving transmission efficiency, and is simple, occupies little space, and does not affect the installation of other components.

[0016] Furthermore, both ends of the gearbox have drive wheels, and the outer edges of the drive wheels mesh with the tracks.

[0017] The above technical solution reduces the risk of drive wheel slippage, provides more power, and has better overall balance.

[0018] Secondly, this utility model also discloses a combine harvester, including the rear-drive tracked chassis described in the first aspect.

[0019] Furthermore, the combine harvester also includes a cab located at the front of the frame, with the engine fixed to the lower rear of the cab.

[0020] The above technical solution fixes the engine to the lower rear of the cab, which shifts the overall center of gravity of the harvester to the rear, helping to reduce the extent of the front end sinking during emergency stops and thus reducing the possibility of nose-diving.

[0021] Compared with the prior art, the beneficial effects achieved by this utility model are as follows:

[0022] The rear-drive tracked chassis described in this utility model removes the gearbox from the cramped front space and places it at the rear of the vehicle, increasing maintenance space; the hydraulic drive structure connecting the engine and gearbox improves transmission efficiency and extends the life of both the engine and gearbox.

[0023] The present invention describes a combine harvester in which the engine is fixed to the lower rear of the cab, which shifts the overall center of gravity of the harvester to the rear, helping to reduce the extent of the front end sinking during emergency stops, thereby reducing the possibility of nose-diving. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0025] In the diagram: 1. Tracked chassis; 2. Engine; 3. Gearbox; 4. Cab; 5. Frame; 6. Drive wheel; 7. Track roller; 8. Guide wheel; 9. Guide rail; 10. Track; 11. Travel pump assembly; 12. Hydraulic motor. Detailed Implementation

[0026] The present invention will be further described below with reference to the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present invention, and should not be used to limit the scope of protection of the present invention.

[0027] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0028] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0029] Example 1, as Figure 1 As shown, this utility model provides a rear-driven tracked chassis, including a frame 5. An engine 2 is located at the front of the frame 5, a gearbox 3 is located at the rear of the frame 5, and a tracked running gear structure is located at the lower part of the frame 5. Moving the gearbox from the cramped front space to the rear of the vehicle increases maintenance space and reduces maintenance difficulty.

[0030] The engine 2 and the gearbox 3 are connected by a hydraulic drive structure, which can improve transmission efficiency and extend the life of the engine and gearbox.

[0031] The tracked walking structure includes a support roller 7 and a guide roller 8 connected to the frame 5. The support roller 7 and the guide roller 8 are provided with meshing tracks 10 on their outer periphery, which can reduce slippage and adapt to muddy working environments.

[0032] The tracked walking structure also includes a guide rail 9 connected to the frame 5, and the guide rail 9 is located below the support roller 7.

[0033] The hydraulic drive structure includes a travel pump assembly 11 and a hydraulic motor 12. The travel pump assembly 11 is mounted on the front end of the engine 2, and the hydraulic motor 12 is mounted on the gearbox 3. The power input end of the travel pump assembly 11 is connected to the power output end of the engine 2, the oil outlet of the travel pump assembly 11 is connected to the oil inlet of the hydraulic motor 12, and the power output end of the hydraulic motor 12 is connected to the power input end of the gearbox 3. The oil outlet of the travel pump assembly 11 and the oil inlet of the hydraulic motor 12 are connected through a hydraulic pipeline, which reduces the number of vulnerable parts and improves transmission efficiency.

[0034] Both ends of the gearbox 3 have drive wheels 6, and the outer edge of the drive wheels 6 meshes with the track 10, which reduces the risk of drive wheel slippage, provides more power, and improves overall balance.

[0035] Example 2, as Figure 1 As shown, this utility model provides a combine harvester, including the rear-driven tracked chassis 1 described in Embodiment 1, and also includes a cab 4 located at the front of the frame 5, with the engine 2 fixed below the rear of the cab.

[0036] The combine harvester has its engine fixed at the rear of the cab, which shifts the overall center of gravity of the harvester to the rear. This helps to reduce the amount of nose drop during emergency stops, thereby reducing the possibility of nose-diving. The design is simple, takes up little space, and does not affect the installation of other components.

[0037] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A rear-drive tracked chassis, characterized in that, The vehicle includes a frame (5), with an engine (2) at the front, a gearbox (3) at the rear, and a tracked walking structure at the lower part of the frame (5). The engine (2) and the gearbox (3) are connected by a hydraulic drive structure.

2. The rear-drive tracked chassis according to claim 1, characterized in that, The tracked walking structure includes a support roller (7) and a guide roller (8) connected to the frame (5), and the support roller (7) and the guide roller (8) are provided with meshing tracks (10) on their outer periphery.

3. The rear-drive tracked chassis according to claim 2, characterized in that, The tracked walking structure also includes a guide rail (9) that is assembled and connected to the frame (5), and the guide rail (9) is located below the support roller (7).

4. The rear-drive tracked chassis according to claim 1, characterized in that, The hydraulic drive structure includes: a walking pump assembly (11) and a hydraulic motor (12); The travel pump assembly (11) is installed at the front end of the engine (2), the hydraulic motor (12) is installed on the gearbox (3), the power input end of the travel pump assembly (11) is connected to the power output end of the engine (2), the oil outlet of the travel pump assembly (11) is connected to the oil inlet of the hydraulic motor (12), and the power output end of the hydraulic motor (12) is connected to the power input end of the gearbox (3).

5. The rear-drive tracked chassis according to claim 4, characterized in that, The oil outlet of the walking pump assembly (11) is connected to the oil inlet of the hydraulic motor (12) through a hydraulic pipeline.

6. The rear-drive tracked chassis according to claim 2, characterized in that, Both ends of the gearbox (3) have drive wheels (6), and the outer edge of the drive wheels (6) meshes with the track (10).

7. A combine harvester, characterized in that, Includes the rear-drive tracked chassis as described in any one of claims 1-6.

8. The combine harvester according to claim 7, characterized in that, It also includes a cab (4) located at the front of the frame (5), and the engine (2) is fixed to the lower rear of the cab.

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