Harvester stepless speed change device for hilly and mountainous areas

Abstract

The utility model relates to the technical field of harvesters, in particular to a harvester stepless speed change device for hilly and mountainous areas, which comprises an HST assembly combination, a gearbox assembly and a driving shaft assembly combination, a hydraulic motor in the HST assembly combination is connected with an HST transmission gap bridge combination, a hydraulic pump in the HST assembly combination is connected with the gearbox assembly, and the driving shaft assembly combination is connected with the gearbox assembly. Driving shaft assembling combinations are installed on the two sides of the lower portion of the gearbox assembly, and a steering control device and a gear shifting device are installed on the gearbox assembly. The harvester is simple in structure, light in weight, low in cost, compact in space and suitable for hilly and mountainous areas.

Description

Technical Field

[0001] This utility model relates to the field of harvester technology, and in particular to a continuously variable transmission device for harvesters used in hilly and mountainous areas. Background Technology

[0002] Combine harvesters are common integrated machines for harvesting crops, completing the harvesting and threshing process in one operation. The grain is then collected in a storage bin and transported to a truck via a conveyor belt. Manual harvesting is also possible, where the stalks of crops such as rice and wheat are laid out in the field and then collected and threshed by grain harvesting machinery. Existing combine harvesters are typically large, and due to the addition of the control system, the overall weight is significant. Large combine harvesters are less suitable for mountainous and hilly areas because the plots in these areas are small and irregular, making it impossible for large machinery to access them. In mountainous and hilly areas, power supply is limited, affecting the performance and efficiency of the harvesters.

[0003] Harvesters are essential machinery for harvesting crops. The three most commonly used transmission systems are hydrostatic continuously variable transmission (HST) with a drive axle, hydraulic-mechanical continuously variable transmission (HMT), and mechanical transmission (manual transmission). The HST + drive axle system is widely used due to its ease of operation and wide stepless speed range.

[0004] The transmission devices in existing harvesters are too large, complex in structure, and expensive, making them unsuitable for use in hilly and mountainous areas. Summary of the Invention

[0005] The technical problem to be solved by this utility model is to provide a continuously variable transmission device for harvesters in hilly and mountainous areas in order to solve the problems existing in the prior art mentioned above.

[0006] The technical solution adopted by this utility model to solve its technical problem is: a continuously variable transmission device for harvesters in hilly and mountainous areas, including an HST assembly assembly, a gearbox assembly and a drive shaft assembly assembly. In the HST assembly assembly, the hydraulic motor is connected to the HST transmission bridge assembly, the hydraulic pump is connected to the gearbox assembly, and drive shaft assemblies are installed on both sides below the gearbox assembly. The gearbox assembly is equipped with a steering control device and a shifting device.

[0007] Furthermore, the transmission assembly includes a transmission housing, in which an I-shaft assembly and a steering clutch shaft assembly are installed. The output end of the HST assembly engages with the I-shaft assembly. An intermediate shaft assembly is located above the steering clutch shaft assembly, and an IV-shaft assembly is located below the steering clutch shaft assembly. The steering clutch shaft assembly engages with both the IV-shaft assembly and the intermediate shaft assembly. The drive shaft assembly engages with the IV-shaft assembly. The I-shaft assembly is located above the intermediate shaft assembly and engages with it.

[0008] Furthermore, the steering control device includes a steering control plate and steering fork assemblies distributed on the left and right sides. The steering fork assemblies are mounted on the steering clutch shaft assembly, and the steering control plates are mounted on both ends of the intermediate shaft assembly. The steering fork assemblies are connected to the steering control plates.

[0009] Furthermore, a gear shifting device is installed on the I-axis assembly.

[0010] Furthermore, the drive shaft assembly includes a drive shaft, one end of which is fitted with a drive wheel, and the other end of which is fitted with a drive gear.

[0011] Furthermore, the gearbox housing has a split structure.

[0012] The beneficial effects of this utility model are: the utility model has a simple structure, is lightweight, has low cost, and is compact, making it suitable for harvesters in hilly and mountainous areas. Attached Figure Description

[0013] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0014] Figure 1 This is a schematic diagram of the structure of this utility model;

[0015] Figure 2 This is a utility model Figure 1 A structural diagram from another direction;

[0016] Figure 3 This is a schematic diagram of the structure of the gearbox assembly and drive shaft assembly of this utility model after removing the gearbox housing;

[0017] Figure 4 This is a utility model Figure 3 A structural diagram from another direction;

[0018] In the diagram: 1. Drive shaft assembly, 11. Drive shaft, 12. Drive wheel, 13. Drive gear.

[0019] 4. HST assembly,

[0020] 7. Gearbox assembly, 71. I-shaft assembly, 72. Intermediate shaft assembly, 73. Steering clutch shaft assembly, 74. Steering shift fork assembly, 75. Steering control device, 76. Gearbox housing, 77. Steering control panel, 78. IV-shaft assembly, 79. Gear shifting device. Detailed Implementation

[0021] The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, illustrating only the basic structure of the present invention, and therefore only show the components relevant to the present invention.

[0022] like Figures 1-4 The continuously variable transmission (CVT) device for harvesters used in hilly and mountainous areas includes an HST assembly 4, a gearbox assembly 7, and a drive shaft assembly 1. In the HST assembly 4, a hydraulic motor is connected to an HST transmission bridge assembly 5, and a hydraulic pump is connected to the gearbox assembly 7. Drive shaft assemblies 1 are installed on both sides of the lower part of the gearbox assembly 7. A steering control device 75 and a shifting device 79 are installed on the gearbox assembly 7.

[0023] like Figures 3-4 As shown, the gearbox assembly 7 includes a gearbox housing 76, which is a split structure. The two split structures are installed together by bolts. The gearbox housing 76 houses a first-shaft assembly 71 and a steering clutch shaft assembly 73. The output end of the HST assembly 4 engages with the first-shaft assembly 71. An intermediate shaft assembly 72 is located above the steering clutch shaft assembly 73, and an fourth-shaft assembly 78 is located below the steering clutch shaft assembly 73. The steering clutch shaft assembly 73 engages with both the fourth-shaft assembly 78 and the intermediate shaft assembly 72. The drive shaft assembly 1 engages with the fourth-shaft assembly 78. The first-shaft assembly 71 is located above the intermediate shaft assembly 72 and engages with it.

[0024] like Figure 1 and Figure 3 As shown, the steering control device 75 includes a steering control plate 77 and steering fork assemblies 74 distributed on the left and right sides. The steering clutch shaft assembly 73 is equipped with the steering fork assembly 74, and the two ends of the intermediate shaft assembly 72 are equipped with the steering control plate 77. The steering fork assembly 74 is connected to the steering control plate 77.

[0025] like Figure 4 As shown, a shifting device 79 is installed on the I-shaft assembly 71 to control the harvester to shift gears, change the vehicle's transmission ratio, and enable the engine to operate in a relatively efficient speed range at different vehicle speeds.

[0026] The drive shaft assembly 1 includes a drive shaft 11, one end of which is equipped with a drive wheel 12, and the other end of which is equipped with a drive gear 13.

[0027] Work process:

[0028] Step 1: The gear on the output shaft of the hydraulic pump in HST assembly 4 meshes with shaft I assembly 71, and the shifting device 79 controls shaft I assembly 71 to shift gears.

[0029] Step 2: Engagement between shaft assembly 71 and intermediate shaft assembly 72;

[0030] Step 3: The intermediate shaft assembly 72 engages with the steering clutch shaft assembly 73, and at the same time, the left and right steering fork assemblies 74 are installed on the steering clutch shaft assembly 73. The steering of the drive wheel 12 is controlled by the left and right steering fork assemblies 74.

[0031] Step 4: The steering clutch shaft assembly 73 engages with the IV shaft assembly 78;

[0032] Step 5: The IV shaft assembly 78 meshes with the drive gears 13 in the two drive shaft assembly 1, thereby driving the drive wheel 12 to rotate.

[0033] Based on the above-described preferred embodiments of this utility model, and through the foregoing description, those skilled in the art can make various changes and modifications without departing from the technical concept of this utility model. The technical scope of this utility model is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. A continuously variable transmission (CVT) device for harvesters used in hilly and mountainous areas, characterized in that: The assembly includes an HST assembly (4), a gearbox assembly (7), and a drive shaft assembly (1). In the HST assembly (4), the hydraulic motor is connected to the HST transmission bridge assembly (5), and the hydraulic pump is connected to the gearbox assembly (7). The drive shaft assembly (1) is installed on both sides of the lower part of the gearbox assembly (7). The gearbox assembly (7) is equipped with a steering control device (75) and a shifting device (79).

2. The continuously variable transmission device for harvesters used in hilly and mountainous areas according to claim 1, characterized in that: The gearbox assembly (7) includes a gearbox housing (76), in which a first-shaft assembly (71) and a steering clutch shaft assembly (73) are installed. The output end of the HST assembly (4) engages with the first-shaft assembly (71). An intermediate shaft assembly (72) is provided above the steering clutch shaft assembly (73), and a fourth-shaft assembly (78) is provided below the steering clutch shaft assembly (73). The steering clutch shaft assembly (73) engages with the fourth-shaft assembly (78) and the intermediate shaft assembly (72) respectively. The drive shaft assembly (1) engages with the fourth-shaft assembly (78). The first-shaft assembly (71) is located above the intermediate shaft assembly (72) and engages with the intermediate shaft assembly (72).

3. The continuously variable transmission device for harvesters used in hilly and mountainous areas according to claim 2, characterized in that: The steering control device (75) includes a steering control plate (77) and steering fork assemblies (74) distributed on the left and right sides. The steering clutch shaft assembly (73) is equipped with the steering fork assembly (74). The steering control plate (77) is installed at both ends of the intermediate shaft assembly (72). The steering fork assembly (74) is connected to the steering control plate (77).

4. A continuously variable transmission device for harvesters used in hilly and mountainous areas according to claim 2, characterized in that: The I-axis assembly (71) is equipped with a gear shifting device (79).

5. A continuously variable transmission device for harvesters used in hilly and mountainous areas according to claim 1, characterized in that: The drive shaft assembly (1) includes a drive shaft (11), one end of which is equipped with a drive wheel (12), and the other end of which is equipped with a drive gear (13).

6. A continuously variable transmission device for harvesters used in hilly and mountainous areas according to claim 2, characterized in that: The gearbox housing (76) is a split structure.

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