Four-wheel drive gearbox mechanism of corn harvester

Abstract

The utility model relates to the technical field of four-wheel-drive gearboxes of corn harvesters, in particular to a four-wheel-drive gearbox mechanism of a corn harvester. Comprising a gearbox assembly, a rear transmission shaft assembly is installed at one end of the gearbox assembly, a rear differential assembly is installed at the end, away from the gearbox assembly, of the rear transmission shaft assembly, two sets of rear wheels are installed on the rear differential assembly, and a front transmission shaft assembly is installed at the other end of the gearbox assembly. Through the arrangement of the gearbox assembly, gear transmission is changed into belt transmission, when front tires and rear tires have speed difference in the walking process, due to slight slipping in the belt transmission process, the difference caused by different linear speeds is buffered through slipping, heat dissipation is fast, and therefore the situation that the temperature of a gearbox is too high, and the service life of the gearbox is prolonged is prevented. And in addition, the belt transmission structure is simple, the cost is saved, and the maintenance is convenient.

Description

Technical Field

[0001] The utility model belongs to the technical field of four-wheel drive gearboxes for corn harvesters, and particularly relates to a four-wheel drive gearbox mechanism for a corn harvester. Background Technique

[0002] A corn harvester generally includes a ear header, a straw header, a large elevator, a peeling machine, a grass bin, a grain bin, a rotary tiller, a cab and other devices. There are a large number of transmission components between each device and the engine and between each device, resulting in a very complex spatial structure of the harvester body. The existing walking system of the harvester adopts a traditional mechanical transmission structure and drives the walking in a mechanical transmission manner.

[0003] The characteristics of the existing four-wheel drive of corn harvesters are that if the diameters of the front and rear tires change, after the four-wheel drive is combined, due to the difference in the linear speeds of the front and rear tires, when the four-wheel drive mode is used, the speed ratios of the front and rear tires will be different. Because the rotational speeds are different and on the same shaft, the gearboxes of the front and rear wheels will exert force on each other, ultimately causing the temperature of the gearbox to be too high and resulting in damage to the gearbox. Content of the Utility Model

[0004] The purpose of the utility model is to provide a four-wheel drive gearbox mechanism for a corn harvester, which can effectively prevent the temperature of the gearbox from being too high and make the gearbox not easily damaged by setting a gearbox component, so as to solve the problems raised in the above background technique.

[0005] To achieve the above purpose, the utility model provides the following technical solution: a four-wheel drive gearbox mechanism for a corn harvester, including a gearbox component, a rear transmission shaft component is installed at one end of the gearbox component, a front transmission shaft component is installed at the other end of the gearbox component, and an adjustment component is installed on the gearbox component;

[0006] The gearbox component includes a first mounting bracket and a second mounting bracket. A first pulley is rotatably connected to the first mounting bracket, a second pulley is rotatably connected to the second mounting bracket, and the first pulley and the second pulley are connected by a belt transmission.

[0007] Further, the first pulley is installed on the front transmission shaft component, and the second pulley is installed on the rear transmission shaft component.

[0008] Further, a rear differential component is installed at one end of the rear transmission shaft component away from the gearbox component, and two groups of rear wheels are installed on the rear differential component.

[0009] Further, a front differential component is installed at one end of the front transmission shaft component away from the gearbox component, and two groups of front wheels are installed on the front differential component.

[0010] Furthermore, a first connection block is installed on the first mounting bracket, a second connection block is installed on the second mounting bracket, and the second connection block is slidably connected to the first connection block.

[0011] Furthermore, the adjusting assembly includes two groups of first mounting blocks and two groups of second mounting blocks. Both groups of the first mounting blocks are installed on the first connection block, and both groups of the second mounting blocks are installed on the second connection block.

[0012] Furthermore, connecting rods are installed on both groups of the second mounting blocks, and one ends of both groups of the connecting rods are respectively slidably connected to both groups of the first mounting blocks.

[0013] Furthermore, a first positioning block and a second positioning block are slidably connected to both groups of the connecting rods, and both groups of the first positioning blocks are respectively installed on both groups of the first mounting blocks.

[0014] Furthermore, nuts are threadedly connected to both groups of the connecting rods, and both groups of the nuts are respectively located between both groups of the second positioning blocks and the second mounting blocks.

[0015] Furthermore, springs are sleeved on both groups of the connecting rods, one ends of both groups of the springs are respectively installed on both groups of the first positioning blocks, and the other ends of both groups of the springs are respectively installed on both groups of the second positioning blocks.

[0016] The beneficial effects of the present utility model are as follows:

[0017] Through the arrangement of the transmission assembly, the gear transmission is changed to belt transmission. When there is a speed difference between the front and rear tires during walking, due to slight slippage during the belt transmission process, the slippage is utilized to buffer the difference caused by different linear speeds, and the heat dissipation is also fast. Thus, it prevents the transmission from overheating, making the transmission not easily damaged. Moreover, the structure of the belt transmission is simple, cost-saving, and easy to maintain.

[0018] Other features and advantages of the present utility model will be described in the subsequent description, and part of them will become obvious from the description or be understood by implementing the present utility model. The objectives and other advantages of the present utility model can be achieved and obtained through the structures pointed out in the description and the drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0020] Figure 1 shows a structural schematic diagram according to an embodiment of the present utility model;

[0021] Figure 2 shows a schematic diagram of a frame structure according to an embodiment of the present utility model;

[0022] Figure 3 shows a schematic diagram of a transmission structure according to an embodiment of the present utility model.

[0023] In the figure: 100, transmission assembly; 110, first mounting bracket; 111, first pulley; 112, first connecting block; 120, second mounting bracket; 121, second pulley; 122, second connecting block; 130, second mounting block; 131, first mounting block; 132, connecting rod; 133, first positioning block; 134, second positioning block; 135, nut; 136, spring; 200, rear drive shaft assembly; 300, rear differential assembly; 400, rear wheels; 500, front drive shaft assembly; 600, front differential assembly; 700, front wheels. Specific embodiments

[0024] To make the objectives, technical solutions, and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Apparently, the described embodiments are some, but not all, of the embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0025] Please refer to Figures 1-3 , the present utility model provides a technical solution: a four-wheel drive transmission mechanism for a corn harvester. It includes a transmission assembly 100. One end of the transmission assembly 100 is installed with a rear drive shaft assembly 200. One end of the rear drive shaft assembly 200 away from the transmission assembly 100 is installed with a rear differential assembly 300. Two groups of rear wheels 400 are installed on the rear differential assembly 300. The other end of the transmission assembly 100 is installed with a front drive shaft assembly 500. One end of the front drive shaft assembly 500 away from the transmission assembly 100 is installed with a front differential assembly 600. Two groups of front wheels 700 are installed on the front differential assembly 600. An adjustment assembly is installed on the transmission assembly 100;

[0026] The transmission assembly 100 includes a first mounting bracket 110 and a second mounting bracket 120. A first pulley 111 is rotatably connected to the first mounting bracket 110, and a second pulley 121 is rotatably connected to the second mounting bracket 120. The first pulley 111 and the second pulley 121 are connected by a belt drive. The first pulley 111 is mounted on the front drive shaft assembly 500, and the second pulley 121 is mounted on the rear drive shaft assembly 200.

[0027] The front wheels 700 and the rear wheels 400 are of different sizes. When there is a speed difference between the front wheels 700 and the rear wheels 400 during walking, due to slight slippage during the belt drive, the slippage is utilized to buffer the gap caused by the different linear speeds, and the heat dissipation is also fast. Thus, it prevents the transmission from overheating, making it not easy for the transmission to be damaged. Moreover, the structure of the belt drive is simple, saving costs and being convenient for maintenance.

[0028] A first connecting block 112 is mounted on the first mounting bracket 110, and a second connecting block 122 is mounted on the second mounting bracket 120. The second connecting block 122 is slidably connected to the first connecting block 112.

[0029] By providing the first connecting block 112 and the second connecting block 122, when it is necessary to adjust the distance between the first pulley 111 and the second pulley 121, by adjusting the movement of the second connecting block 122 within the first connecting block 112, the first pulley 111 and the second pulley 121 can be adjusted, and the first mounting bracket 110 and the second mounting bracket 120 are connected to each other.

[0030] The adjusting assembly includes two groups of first mounting blocks 131 and two groups of second mounting blocks 130. The two groups of first mounting blocks 131 are both mounted on the first connecting block 112, and the two groups of second mounting blocks 130 are both mounted on the second connecting block 122.

[0031] Connecting rods 132 are mounted on the two groups of second mounting blocks 130. One ends of the two groups of connecting rods 132 are respectively slidably connected to the two groups of first mounting blocks 131. By connecting the first mounting blocks 131 and the second mounting blocks 130 through the connecting rods 132, when the second mounting blocks 130 move, the connecting rods 132 slide within the first mounting blocks 131.

[0032] First positioning blocks 133 and second positioning blocks 134 are slidably connected to the two groups of connecting rods 132. The two groups of first positioning blocks 133 are respectively mounted on the two groups of first mounting blocks 131.

[0033] Nuts 135 are threadedly connected to the two groups of connecting rods 132. The two groups of nuts 135 are respectively located between the two groups of second positioning blocks 134 and the second mounting blocks 130.

[0034] Two sets of the connecting rods 132 are sleeved with springs 136. One ends of the two sets of springs 136 are respectively installed on the two first positioning blocks 133, and the other ends of the two sets of springs 136 are respectively installed on the two second positioning blocks 134. By arranging the springs 136, under the elastic action of the springs 136, the first positioning block 133 and the second positioning block 134 are extruded, so that the first positioning block 133 and the second positioning block 134 respectively drive the first mounting block 131 and the second mounting block 130 to move, and the first mounting block 131 and the second mounting block 130 respectively drive the first mounting bracket 110 and the second mounting bracket 120 to move, adjusting and increasing the distance between the first pulley 111 and the second pulley 121. Since the first pulley 111 and the second pulley 121 are connected by a belt, the belt is stretched, the tension of the belt is adjusted, so that the belt can be stably installed on the first pulley 111 and the second pulley 121, thereby improving the stability of the belt during use. By adjusting the position of the adjusting nut 135, the elasticity of the spring 136 can be adjusted, increasing or decreasing the tensile force on the belt, so that the belt is not easily broken due to excessive elastic force of the spring 136 during use, and at the same time, it can also ensure that the tension of the belt can be kept stable and is not easily detached.

[0035] 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 recorded in the foregoing embodiments, or perform equivalent replacements on some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A four-wheel drive gearbox mechanism for a corn harvester, characterized in that: It comprises a gearbox assembly (100), a rear transmission shaft assembly (200) being mounted on one end of the gearbox assembly (100), a front transmission shaft assembly (500) being mounted on the other end of the gearbox assembly (100), and an adjustment assembly being mounted on the gearbox assembly (100); The gearbox assembly (100) comprises a first mounting frame (110) and a second mounting frame (120); the first mounting frame (110) is rotatably connected to a first pulley (111); the second mounting frame (120) is rotatably connected to a second pulley (121); the first pulley (111) and the second pulley (121) are connected via a belt transmission.

2. The four-wheel drive gearbox mechanism of a corn harvester according to claim 1, characterized in that: The first pulley (111) is installed on the front transmission shaft assembly (500), and the second pulley (121) is installed on the rear transmission shaft assembly (200).

3. The four-wheel drive gearbox mechanism of a corn harvester according to claim 2, characterized in that: A rear differential assembly (300) is installed at one end of the rear transmission shaft assembly (200) away from the gearbox assembly (100), and two sets of rear wheels (400) are installed on the rear differential assembly (300).

4. The four-wheel drive gearbox mechanism of a corn harvester according to claim 3, characterized in that: A front differential assembly (600) is installed at one end of the front transmission shaft assembly (500) away from the gearbox assembly (100), and two sets of front wheels (700) are installed on the front differential assembly (600).

5. The four-wheel drive gearbox mechanism of a corn harvester according to claim 4, characterized in that: A first connection block (112) is installed on the first mounting frame (110), and a second connection block (122) is installed on the second mounting frame (120), and the second connection block (122) is slidably connected to the first connection block (112).

6. The four-wheel drive gearbox mechanism of a corn harvester according to claim 5, characterized in that: The adjustment assembly comprises two groups of first mounting blocks (131) and two groups of second mounting blocks (130), wherein the two groups of the first mounting blocks (131) are both mounted on the first connecting block (112), and the two groups of the second mounting blocks (130) are both mounted on the second connecting block (122).

7. The four-wheel drive gearbox mechanism of a corn harvester according to claim 6, characterized in that: The two groups of the second mounting blocks (130) are both mounted with connecting rods (132), and one end of the two groups of the connecting rods (132) is respectively slidably connected to the two groups of the first mounting blocks (131).

8. The four-wheel drive gearbox mechanism of a corn harvester according to claim 7, characterized in that: The two groups of connecting rods (132) are both slidably connected with a first positioning block (133) and a second positioning block (134), and the two groups of the first positioning blocks (133) are respectively mounted on the two groups of the first mounting blocks (131).

9. The four-wheel drive gearbox mechanism of a corn harvester according to claim 8, characterized in that: The two groups of connecting rods (132) are both threadedly connected with nuts (135), and the two groups of nuts (135) are respectively located between the two groups of second positioning blocks (134) and the second mounting blocks (130).

10. The four-wheel drive gearbox mechanism of a corn harvester according to claim 9, characterized in that: The two groups of connecting rods (132) are both sleeved with springs (136), one end of the two groups of springs (136) are respectively mounted on the two groups of first positioning blocks (133), and the other end of the two groups of springs (136) are respectively mounted on the two groups of second positioning blocks (134).

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