Transmission device for agricultural machine

Abstract

The utility model relates to a transmission device for an agricultural machine, which is connected with a roller of a grass chopper, and comprises a motor, a transmission shaft, a transmission shaft and a transmission shaft, the driving wheel is mounted on an output shaft of the motor and is driven by the motor to rotate; the gap bridge wheels are hinged to the rack and located behind the driving wheels, and a certain angle is formed between the connecting line between the center of each driving wheel and the corresponding gap bridge wheel and the horizontal plane; the first belt is arranged on the driving wheel and the gap bridge wheel in a sleeving manner and is provided with a first inner ring surface and a first outer ring surface, and the first inner ring surface is in contact with the driving wheel and the gap bridge wheel; the driven wheel is mounted at one end of the roller; and the two second belts are arranged on the gap bridge wheel and the driven wheel in parallel in a sleeving manner and are respectively provided with a second inner ring surface and a second outer ring surface, and the two second inner ring surfaces are in contact with the gap bridge wheel and the driven wheel. The tensioning device is reasonable in structure, high in transmission efficiency, convenient to tension and adjust and good in stability.

Description

Technical Field

[0001] This utility model belongs to the field of agricultural machinery technology, and in particular relates to a transmission device for agricultural machinery. Background Technology

[0002] In agricultural machinery, the transmission device is one of the core components that ensures the efficient operation of the equipment. Especially in equipment such as straw shredders, the performance of the transmission device directly affects the working efficiency and reliability of the equipment.

[0003] The agricultural machinery currently manufactured by our company has the following two defects in its transmission design during actual use: 1. The original equipment uses a single belt wound around the drive and driven pulleys. Over long-term use, belt wear becomes particularly prominent. Furthermore, the high cost of a single belt and frequent replacements increase maintenance costs for users. 2. The original design of a single belt paired with a single tensioning component causes the adjusting spring in the tensioning component to bear excessive pressure over a long period, easily leading to metal fatigue. Once this occurs, coupled with belt wear, it greatly increases the risk of the belt falling off, hindering the normal operation of the equipment. Our technical personnel urgently need to solve these technical problems. Utility Model Content

[0004] In view of the above-mentioned shortcomings of the existing technology, the present invention provides a transmission device for agricultural machinery, which has a reasonable structure, high transmission efficiency, convenient tension adjustment and good stability.

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

[0006] A transmission device for agricultural machinery, connected to the drum of a grass shredder, includes a frame;

[0007] A motor, mounted on the frame, the motor having an output shaft;

[0008] A drive wheel is mounted on the output shaft of the motor and is driven to rotate by the motor;

[0009] A bridge wheel is hinged to the frame and located behind the drive wheel. The line connecting the center of the drive wheel and its corresponding bridge wheel forms a certain angle with the horizontal plane.

[0010] A first belt is fitted on the drive pulley and the bridge pulley, and has a first inner ring surface and a first outer ring surface, wherein the first inner ring surface contacts the drive pulley and the bridge pulley;

[0011] A driven wheel is installed at one end of the roller, the roller is hinged to the frame, and the diameter of the bridge wheel is larger than the diameter of the driven wheel;

[0012] Two second belts are mounted side by side on the bridge pulley and the driven pulley, each having a second inner ring surface and a second outer ring surface, with the two second inner ring surfaces contacting the bridge pulley and the driven pulley.

[0013] In a preferred embodiment of the present invention, a first tensioning component is provided on the outer side of the first belt and near the bridge pulley. The first tensioning component includes a receiving arm hinged to the frame. The receiving arm is rotatably mounted with a first tensioning wheel away from its hinge end. The first tensioning wheel is in pressure contact with the first outer ring surface.

[0014] It also includes a first adjusting spring, one end of which is connected to the receiving arm near the first tension wheel, and a first adjusting rod sleeved on the frame at the other end of the first adjusting spring. The first adjusting rod is connected to the frame through a first nut.

[0015] In a preferred embodiment of the present invention, a second tensioning component is provided on the outer side of the second belt. The second tensioning component includes a swing arm hinged to the frame. A pressure wheel is rotatably mounted on the swing arm along its hinge point with the frame. A second tension wheel is rotatably mounted on one end of the swing arm, and a second adjusting spring is connected to the other end. A second adjusting rod is provided on the other end of the second adjusting spring and sleeved on the frame. The second adjusting rod is connected to the frame through a second nut.

[0016] It also includes a third tensioning wheel that is rotatably mounted on the frame, and the pressure wheel, the second tensioning wheel and the third tensioning wheel are arranged in a triangular shape.

[0017] In a preferred embodiment of the present invention, the second outer ring surface contacts the second tensioning wheel and the third tensioning wheel, and the second inner ring surface contacts the pressure wheel.

[0018] In a preferred embodiment of the present invention, a first tooth groove is provided on the outer periphery of the drive wheel, and three second tooth grooves are provided on the outer periphery of the bridge wheel. The first belt is wound around the first tooth groove and the second tooth groove at the outer end, and the centers of the first tooth groove and the second tooth groove at the outer end are located on the same plane.

[0019] Two third toothed grooves are provided on the outer periphery of the driven wheel, which correspond to the other two second toothed grooves of the bridge wheel, and the second belt is wound around the two second toothed grooves and the third toothed grooves.

[0020] In a preferred embodiment of the present invention, the cross-sectional shapes of the first inner ring surface and the second inner ring surface are trapezoidal, and the cross-sectional shapes of the first tooth groove, the second tooth groove and the third tooth groove are trapezoidal.

[0021] In a preferred embodiment of this utility model, the angle between the line connecting the center of the drive wheel and its corresponding bridge wheel and the horizontal plane is 15 degrees.

[0022] Beneficial effects:

[0023] This utility model discloses a transmission device for agricultural machinery. It adds a bridge wheel and adopts a one-to-two transmission method, which optimizes the power distribution path, significantly reduces energy loss during power transmission, reduces mechanical friction and energy dissipation, thereby improving the overall transmission efficiency. At the same time, it disperses the transmission load, making the first belt and the second belt more evenly stressed, effectively alleviating belt wear and extending their service life.

[0024] This invention simplifies tension adjustment operations and ensures normal equipment operation by configuring and optimizing multiple tensioning components.

[0025] This utility model discloses a transmission device for agricultural machinery. By adding a bridge wheel, optimizing the transmission path, and optimizing the tensioning components, it significantly improves the stability and reliability of the transmission and extends the service life of the transmission device. Attached Figure Description

[0026] Figure 1 A schematic diagram of the structure of a transmission device for agricultural machinery provided by this utility model;

[0027] Figure 2 A front view of a transmission device for agricultural machinery provided by this utility model;

[0028] Figure 3 A partial structural diagram of a transmission device for agricultural machinery provided by this utility model. Figure 1 ;

[0029] Figure 4 A partial structural diagram of a transmission device for agricultural machinery provided by this utility model. Figure 2 .

[0030] In the diagram: 1 rack;

[0031] 2. Drive wheel;

[0032] 3 bridge wheels;

[0033] 4. First belt;

[0034] 5 driven wheels;

[0035] 6. Second belt;

[0036] 7 First tensioning component, 71 Support arm, 72 First tensioning wheel, 73 First adjusting spring, 74 First adjusting rod;

[0037] 8 Second tensioning component, 81 swing arm, 82 pressure wheel, 83 second tensioning wheel, 84 second adjusting spring, 85 second adjusting rod, 86 third tensioning wheel. Detailed Implementation

[0038] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0039] like Figure 1-2 As shown, this utility model provides a transmission device for agricultural machinery, which is connected to the drum of a grass shredder, and includes a frame 1;

[0040] A motor, which is mounted on frame 1, has an output shaft;

[0041] A drive wheel 2 is mounted on the output shaft of the aforementioned motor and is driven to rotate by the motor;

[0042] A bridge wheel 3 is hinged to the frame 1 and located behind the drive wheel 2. The line connecting the center of the drive wheel 2 and its corresponding bridge wheel 3 is at a certain angle to the horizontal plane, which optimizes the path of power transmission from the drive wheel 2 to the bridge wheel 3 and reduces energy loss.

[0043] A first belt 4 is sleeved on the aforementioned drive wheel 2 and bridge wheel 3, and has a first inner ring surface and a first outer ring surface, wherein the first inner ring surface contacts the drive wheel 2 and bridge wheel 3.

[0044] A driven wheel 5 is installed at one end of a drum, which is hinged to the frame 1. The diameter of the bridge wheel 3 is larger than the diameter of the driven wheel 5, thereby increasing the rotational speed of the driven wheel 5.

[0045] Two second belts 6 are mounted side by side on the aforementioned bridge wheel 3 and driven wheel 5, each having a second inner ring surface and a second outer ring surface, with the two aforementioned second inner ring surfaces contacting the bridge wheel 3 and driven wheel 5;

[0046] The working principle and beneficial effects of the above embodiments are as follows:

[0047] The motor of this invention drives the drive wheel 2 to rotate through its output shaft, and transmits the power to the bridge wheel 3 through the first belt 4. The bridge wheel 3 then transmits the power to the driven wheel 5 through two second belts 6, thereby driving the drum to rotate.

[0048] This utility model adds a bridge wheel 3 and adopts a one-to-two transmission method, which optimizes the power distribution path, significantly reduces energy loss during power transmission, reduces mechanical friction and energy dissipation, thereby improving the overall transmission efficiency; at the same time, it disperses the transmission load, making the first belt 4 and the second belt 6 more evenly stressed, effectively alleviating belt wear and extending their service life.

[0049] In one embodiment, such as Figure 3 As shown,

[0050] A first tensioning member 7 is provided on the outside of the first belt 4 and near the bridge wheel 3. The first tensioning member 7 includes a receiving arm 71 hinged to the frame 1. A first tensioning wheel 72 is rotatably mounted on the receiving arm 71 away from its hinge end. The first tensioning wheel 72 is in pressure contact with the first outer ring surface.

[0051] It also includes a first adjusting spring 73, one end of which is close to the first tension wheel 72 and connected to the receiving arm 71. The other end of the first adjusting spring 73 is provided with a first adjusting rod 74 sleeved on the frame 1. The first adjusting rod 74 is connected to the frame 1 through a first nut. The first adjusting spring 73 pushes the receiving arm 71 through its elastic force, so that the first tension wheel 72 and the outer side of the first belt 4 maintain pressure contact.

[0052] The aforementioned receiving arm 71 drives the first tensioning wheel 72 to rotate with its hinge point with the frame 1 as a fixed point, thereby realizing the automatic tensioning and protection of the first belt 4.

[0053] In one embodiment, such as Figure 4 As shown,

[0054] A second tensioning component 8 is provided on the outer side of the second belt 6. The second tensioning component 8 includes a swing arm 81 hinged to the frame 1. A pressure wheel 82 is rotatably mounted on the swing arm 81 along its hinge point with the frame 1. A second tension wheel 83 is rotatably mounted on one end of the swing arm 81, and a second adjusting spring 84 is connected to the other end. A second adjusting rod 85 is provided on the other end of the second adjusting spring 84 and sleeved on the frame 1. The second adjusting rod 85 is connected to the frame 1 through a second nut.

[0055] It also includes a third tensioning wheel 86 rotatably mounted on the frame 1. The aforementioned pressure wheel 82, second tensioning wheel 83 and third tensioning wheel 86 are arranged in a triangular shape to provide a more stable tension force and ensure that the two second belts 6 always maintain a good tension during operation. The aforementioned second outer ring surface contacts the second tensioning wheel 83 and third tensioning wheel 86, and the second inner ring surface contacts the pressure wheel 82.

[0056] The aforementioned swing arm 81 drives the second tensioning wheel 83 to rotate with its hinge point with the frame 1 as a fixed point, thereby realizing the automatic tensioning and protection of the second belt 6.

[0057] In one embodiment,

[0058] A first tooth groove is provided on the outer periphery of the aforementioned drive wheel 2, and three second tooth grooves are provided on the outer periphery of the bridge wheel 3. The first belt 4 is wound around the first tooth groove and the second tooth groove at the outer end, and the center of the first tooth groove and the second tooth groove at the outer end are located on the same plane, ensuring that the first belt 4 is smoothly transmitted between the drive wheel 2 and the bridge wheel 3.

[0059] Two third toothed grooves are provided on the outer periphery of the driven wheel 5, which correspond to the other two second toothed grooves of the bridge wheel 3. The second belt 6 is wound around the two second toothed grooves and the third toothed grooves.

[0060] By using a reasonable tooth groove design and belt winding method, the power can be efficiently transmitted from the driving pulley 2 to the driven pulley 5, improving the efficiency of the entire transmission system. At the same time, the tooth groove design effectively reduces belt wear.

[0061] In one embodiment,

[0062] The cross-sectional shapes of the first inner ring surface and the second inner ring surface are trapezoidal, and the cross-sectional shapes of the first tooth groove, the second tooth groove and the third tooth groove are trapezoidal. The trapezoidal cross-section of the tooth groove and the inner ring surface of the belt can increase the contact area between the belt and the tooth groove, reduce slippage and offset, and improve the efficiency and stability of power transmission.

[0063] In one embodiment,

[0064] The angle between the line connecting the center of the drive pulley 2 and its corresponding bridge pulley 3 and the horizontal plane is 15 degrees. The 15-degree angle design helps to reduce belt wear and slippage, extend the belt's service life, and optimize the path of power transmission from the drive pulley 2 to the bridge pulley 3, reducing energy loss.

[0065] In summary:

[0066] This utility model adds a bridge wheel and adopts a one-to-two transmission method, which optimizes the power distribution path, significantly reduces energy loss during power transmission, reduces mechanical friction and energy dissipation, thereby improving the overall transmission efficiency; at the same time, it disperses the transmission load, making the first belt and the second belt more evenly stressed, effectively alleviating belt wear and extending their service life.

[0067] This invention simplifies tension adjustment operations and ensures normal equipment operation by configuring and optimizing multiple tensioning components.

[0068] This utility model discloses a transmission device for agricultural machinery. By adding a bridge wheel, optimizing the transmission path, and optimizing the tensioning components, it significantly improves the stability and reliability of the transmission and extends the service life of the transmission device.

[0069] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. The terms "front," "back," "left," and "right" used in the text are not specific and are mainly for more intuitive illustration of the technical solution, and do not constitute a limitation. Those skilled in the art should understand that the above embodiments are only for illustrating the technical concept and features of this utility model, and their purpose is to enable those skilled in the art to understand the content of this utility model and implement it. They should not be used to limit the scope of protection of this utility model. All equivalent changes or modifications made according to the spirit and essence of this utility model should be included within the scope of protection of this utility model.

Claims

1. A transmission device for agricultural machinery, connected to the drum of a straw shredder, characterized in that: Includes a rack (1); A motor is mounted on the frame (1) and the motor has an output shaft; A drive wheel (2) is mounted on the output shaft of the motor and is driven to rotate by the motor; A bridge wheel (3) is hinged to the frame (1) and located behind the drive wheel (2). The line connecting the center of the drive wheel (2) and its corresponding bridge wheel (3) forms a certain angle with the horizontal plane. A first belt (4) is fitted on the drive wheel (2) and the bridge wheel (3), and has a first inner ring surface and a first outer ring surface. The first inner ring surface contacts the drive wheel (2) and the bridge wheel (3). A driven wheel (5) is installed at one end of the roller, the roller is hinged to the frame (1), and the diameter of the bridge wheel (3) is larger than the diameter of the driven wheel (5); Two second belts (6) are mounted side by side on the bridge wheel (3) and the driven wheel (5), each having a second inner ring surface and a second outer ring surface, with the two second inner ring surfaces contacting the bridge wheel (3) and the driven wheel (5). A second tensioning component (8) is provided on the outside of the second belt (6). The second tensioning component (8) includes a swing arm (81) hinged to the frame (1). A pressure wheel (82) is rotatably mounted on the swing arm (81) along its hinge point with the frame (1). A second tension wheel (83) is rotatably mounted on one end of the swing arm (81), and a second adjusting spring (84) is connected to the other end. A second adjusting rod (85) is provided on the other end of the second adjusting spring (84) and sleeved on the frame (1). The second adjusting rod (85) is connected to the frame (1) through a second nut. It also includes a third tensioning wheel (86) rotatably mounted on the frame (1), wherein the pressure wheel (82), the second tensioning wheel (83) and the third tensioning wheel (86) are arranged in a triangular shape.

2. The transmission device for agricultural machinery according to claim 1, characterized in that: A first tensioning member (7) is provided on the outside of the first belt (4) and near the bridge wheel (3). The first tensioning member (7) includes a receiving arm (71) hinged to the frame (1). The receiving arm (71) is rotatably mounted with a first tensioning wheel (72) away from its hinge end. The first tensioning wheel (72) is in pressure contact with the first outer ring surface. It also includes a first adjusting spring (73), one end of which is connected to the receiving arm (71) near the first tension wheel (72), and the other end of the first adjusting spring (73) is provided with a first adjusting rod (74) sleeved on the frame (1). The first adjusting rod (74) is connected to the frame (1) through a first nut.

3. A transmission device for agricultural machinery according to claim 1, characterized in that: The second outer ring surface contacts the second tensioning wheel (83) and the third tensioning wheel (86), and the second inner ring surface contacts the pressure wheel (82).

4. A transmission device for agricultural machinery according to claim 1, characterized in that: A first tooth groove is provided on the outer periphery of the drive wheel (2), and three second tooth grooves are provided on the outer periphery of the bridge wheel (3). The first belt (4) is wound around the first tooth groove and the second tooth groove at the outer end, and the center of the first tooth groove and the second tooth groove at the outer end are located on the same plane. Two third toothed grooves are provided on the outer periphery of the driven wheel (5), which correspond to the other two second toothed grooves of the bridge wheel (3), and the second belt (6) is wound around the two second toothed grooves and the third toothed grooves.

5. A transmission device for agricultural machinery according to claim 4, characterized in that: The cross-sectional shapes of the first inner ring surface and the second inner ring surface are trapezoidal, and the cross-sectional shapes of the first tooth groove, the second tooth groove and the third tooth groove are trapezoidal.

6. A transmission device for agricultural machinery according to claim 1, characterized in that: The angle between the line connecting the center of the drive wheel (2) and its corresponding bridge wheel (3) and the horizontal plane is 15 degrees.

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