Driving wheel transmission structure

Abstract

The utility model relates to the field of transmission devices, and particularly discloses a driving wheel transmission structure which comprises a drive axle box body, an input gear shaft, two driven gears, two large chain wheels, two driving shafts and two chains, the input gear shaft is installed in the middle of the drive axle box body, the two driven gears are meshed with the input gear shaft, and the two large chain wheels are installed on the input gear shaft. By controlling the input gear shaft to rotate, the driven gears on the left side and the right side can be driven by the input gear shaft to synchronously rotate at the same time, and the large chain wheel and the driving shaft fixed to the large chain wheel are further driven to synchronously rotate. When the robot needs to walk, the robot can be driven to advance and retreat at the same time, and the purpose of speed reduction transmission can be achieved by controlling the transmission ratio of the input gear shaft to the driven gear and the transmission ratio of the large chain wheel to the small chain wheel.

Description

Technical Field

[0001] The utility model relates to the field of transmission devices, in particular to a transmission wheel transmission structure. Background Art

[0002] A transmission mechanism is a structure or mechanism that transmits power from one part of a machine to another, causing the machine or its parts to move or operate.

[0003] The tire transmission mechanism of the all-terrain robot needs to have a high climbing ability due to its special working conditions. Therefore, the transmission structure of the all-terrain robot needs to use a reduction transmission structure. Most tire transmission systems on the market use a variable speed transmission structure with a gearbox. For the all-terrain robot, adding a gearbox will increase its weight and increase the cost. Therefore, this type of transmission structure is not applicable and a new type of transmission structure is needed to replace it. Utility Model Content

[0004] The present invention aims to solve the technical problems mentioned in the above background technology and proposes the following technical solutions:

[0005] A driving wheel transmission structure includes a driving axle case, an input gear shaft, two driven gears, two large sprockets, two driving shafts and two chains, wherein the input gear shaft, driven gear and large sprocket are all located inside the driving axle case and are rotatably connected to the driving axle case, the input gear shaft is installed in the middle position of the driving axle case, the two driven gears and two large sprockets are symmetrically distributed on both sides of the input gear shaft, the two driven gears are meshed with the input gear shaft, a small sprocket is provided on the side of the driven gear, the chain is sleeved on the outer periphery of the small sprocket and the large sprocket, a driving shaft fixing hole is provided in the middle of the large sprocket, and one end of the driving shaft is fixed in the driving shaft fixing hole.

[0006] Preferably, the input gear shaft drives the driven gear to rotate to achieve a deceleration and torque-increasing transmission.

[0007] Preferably, a baffle is provided on one side of the large sprocket.

[0008] Preferably, a chain tensioner is provided between the large sprocket and the driven gear.

[0009] Preferably, the tensioner includes a base, a tensioning wheel, and a tensioning wheel connecting plate. The base is fixed in the drive axle case, the tensioning wheel connecting plate is rotatably connected to the base, the tensioning wheel is connected to one end of the tensioning wheel connecting plate, the other end of the tensioning wheel connecting plate is provided with a threaded fixing hole, and a fixing groove is provided on the base.

[0010] The beneficial effects of the utility model are:

[0011] 1. By controlling the rotation of the input gear shaft, the driven gears on both sides can be driven to rotate synchronously at the same time through the input gear shaft, and further drive the large sprocket and the drive shaft fixed on the large sprocket to rotate synchronously, so that the robot can be driven forward and backward at the same time when it needs to walk. By controlling the transmission ratio of the input gear shaft and the driven gear, as well as the transmission ratio of the large sprocket and the small sprocket, the purpose of reduction transmission can be achieved.

[0012] 2. By setting a tensioner between the large sprocket and the small sprocket, the chain tightness can be adjusted through the tensioner, thereby avoiding the problem of the chain falling off due to being too loose or breaking due to being too tight. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a schematic diagram of the structure of the utility model;

[0014] In the figure: 1. Drive axle case; 2. Input gear shaft; 3. Driven gear; 4. Large sprocket; 4-1. Drive shaft fixing hole; 5. Drive shaft; 6. Chain; 7. Small sprocket; 8. Baffle; 9. Tensioner; 9-1. Base; 9-2. Tensioner; 9-3. Tensioner connecting plate; 9-4. Threaded fixing hole; 9-5. Fixing groove. DETAILED DESCRIPTION

[0015] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0016] In the description of the present invention, it should be understood that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. The connection methods described in the terms "fixed connection" and "fixed arrangement" include but are not limited to "welding", "riveting", "adhesion" and "threaded connection". The terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device that includes a series of elements includes not only those elements, but also includes other elements that are not explicitly listed, or also includes elements that are inherent to such process, method, article or device.

[0017] The directions or positional relationships indicated by terms such as "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside" and "outside" are based on the directions or positional relationships shown in the accompanying drawings and are only for the convenience of describing the present invention and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operate in a specific direction. Therefore, they should not be understood as limiting the present invention.

[0018] Example 1

[0019] Reference Figure 1 A driving wheel transmission structure includes a driving axle case 1, an input gear shaft 2, two driven gears 3, two large sprockets 4, two driving shafts 5 and two chains 6. The input gear shaft 2, the driven gear 3 and the large sprocket 4 are all located inside the driving axle case 1 and are rotatably connected to the driving axle case 1. The input gear shaft 2 is installed in the middle position of the driving axle case 1. The two driven gears 3 and the two large sprockets 4 are symmetrically distributed on both sides of the input gear shaft 2. The two driven gears 3 are meshed with the input gear shaft 2. A small sprocket 7 is provided on the side of the driven gear 3. The chain 6 is sleeved on the outer periphery of the small sprocket 7 and the large sprocket 4. A driving shaft fixing hole 4-1 is provided in the middle of the large sprocket 4, and one end of the driving shaft 5 is fixed in the driving shaft fixing hole 4-1.

[0020] Preferably, the input gear shaft 2 drives the driven gear 3 to rotate as a deceleration and torque-increasing transmission.

[0021] Preferably, a baffle 8 is provided on one side of the large sprocket 4 .

[0022] Preferably, a chain tensioner 9 is provided between the large sprocket 4 and the driven gear 3 .

[0023] Preferably, the tensioner 9 includes a base 9-1, a tensioning wheel 9-2, and a tensioning wheel connecting plate 9-3. The base 9-1 is fixed in the drive axle case 1, the tensioning wheel connecting plate 9-3 is rotatably connected to the base 9-1, the tensioning wheel 9-2 is connected to one end of the tensioning wheel connecting plate 9-3, and a threaded fixing hole 9-4 is provided at the other end of the tensioning wheel connecting plate 9-3, and a fixing groove 9-5 is provided on the base 9-1.

[0024] During actual operation, the external power source (drive motor) transmits the torque to the input gear shaft 2, and then the gear on the input gear shaft transmits the torque to the driven gears 3 on both sides. After the first deceleration, the small sprocket 7 on the driven gear 3 transmits the torque to the large sprocket 4 through the chain 6. The chain can be adjusted by the tensioner 9. When adjusting the tensioner 9, you can first rotate the tensioning wheel connecting plate 9-3, and then adjust the tensioning wheel 9-2 to the appropriate position, and finally fix the threaded fixing hole 9-4 and the fixing groove 9-5 in series through the screw, which can avoid the problem of chain 6 being too tight and broken or too loose and falling off. After the second deceleration, the torque is transmitted to the drive shaft 5 connected to the large sprocket, and finally the drive shaft 5 drives the tire to rotate and walk.

Claims

1. A drive wheel transmission structure, comprising a drive axle housing (1), an input gear shaft (2), two driven gears (3), two large sprockets (4), two drive shafts (5) and two chains (6), characterized in that: The input gear shaft (2), the driven gear (3) and the large sprocket (4) are all located inside the drive axle housing (1) and are rotatably connected to the drive axle housing (1). The input gear shaft (2) is installed in the middle of the drive axle housing (1). The two driven gears (3) and the two large sprockets (4) are symmetrically distributed on both sides of the input gear shaft (2). The two driven gears (3) are meshed with the input gear shaft (2). A small sprocket (7) is provided on the side of the driven gear (3). The chain (6) is fitted on the outer periphery of the small sprocket (7) and the large sprocket (4). A drive shaft fixing hole (4-1) is provided in the middle of the large sprocket (4). One end of the drive shaft (5) is fixed in the drive shaft fixing hole (4-1).

2. A driving wheel transmission structure according to claim 1, characterized in that: The input gear shaft (2) drives the driven gear (3) to rotate to achieve a deceleration and torque-increasing transmission.

3. The driving wheel transmission structure according to claim 1, characterized in that: A baffle (8) is provided on one side of the large sprocket (4).

4. The driving wheel transmission structure according to claim 1, characterized in that: A chain tensioner (9) is provided between the large sprocket (4) and the driven gear (3).

5. The driving wheel transmission structure according to claim 4, characterized in that: The tensioner (9) comprises a base (9-1), a tensioning wheel (9-2), and a tensioning wheel connecting plate (9-3); the base (9-1) is fixed in the drive axle case (1); the tensioning wheel connecting plate (9-3) is rotatably connected to the base (9-1); the tensioning wheel (9-2) is connected to one end of the tensioning wheel connecting plate (9-3); the other end of the tensioning wheel connecting plate (9-3) is provided with a threaded fixing hole (9-4); and the base (9-1) is provided with a fixing groove (9-5).

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