Gear transmission case for agricultural machinery

Abstract

A power input gear is arranged at the upper end of the interior of a box body, a first output gear and a second output gear are arranged on the two sides of the lower end of the interior of the box body respectively, a middle rotating gear is arranged below the power input gear, a connecting gear a is arranged on the lower left portion of the middle rotating gear, and a connecting gear b is arranged on the lower right portion of the middle rotating gear. The connecting gear a is located between the middle transmission gear and the first output gear, and the connecting gear b is located between the middle transmission gear and the second output gear. The rear end of a rotating shaft in the center of the power input gear is externally connected with driving equipment, and the front end protrudes out of the box body and is concentrically and fixedly sleeved with a chain wheel b; the two fixing plates are transversely arranged at the front end and the rear end of the upper portion of the box body respectively, a connecting shaft is longitudinally and rotationally arranged at the ends, away from the box body, between the two fixing plates, the front end of the connecting shaft is concentrically and fixedly sleeved with a chain wheel a, and the chain wheel a and a chain wheel b are connected through a chain. The utility model has the advantages of reasonable structural design and good use effect.

Description

Technical Field

[0001] The utility model belongs to the technical field of agricultural machinery and equipment, and particularly relates to a gear transmission box for agricultural machinery. Background Art

[0002] A gear transmission box is a device used to transmit the power of a driving shaft to a driven shaft and change the rotational speed and direction of motion during power transmission. It is an important component of agricultural machinery and is generally composed of a box shell and several gears. When the existing gear transmission box for agricultural machinery is specifically used, its overall design has relatively large defects, resulting in poor use effects, and its internal structure is complex, and the maintenance and repair operations are cumbersome. Therefore, to solve the above problems, it is necessary to develop a gear transmission box for agricultural machinery with a reasonable structural design and good use effects. Content of the Utility Model

[0003] The purpose of the utility model is to overcome the deficiencies of the prior art and provide a gear transmission box for agricultural machinery with a reasonable structural design and good use effects.

[0004] The purpose of the utility model is achieved as follows: A gear transmission box for agricultural machinery includes a box body and a fixing plate. The box body is overall in a "person" shape. In the middle of the upper end inside it, a power input gear is arranged. On the left side of the lower end inside it, a first output gear is arranged. On the right side of the lower end inside it, a second output gear is arranged. A middle rotating gear is arranged directly below the power input gear. The middle transmission gear meshes with the power input gear. A connecting gear a is arranged at the lower left of the middle transmission gear, and a connecting gear b is arranged at the lower right. The connecting gear a and the connecting gear b do not contact each other. The connecting gear a is located between the middle transmission gear and the first output gear and meshes with both the middle transmission gear and the first output gear. The connecting gear b is located between the middle transmission gear and the second output gear and meshes with both the middle transmission gear and the second output gear. Axles are longitudinally penetrated through the centers of the connecting gear a, the connecting gear b, the middle transmission gear, the first output gear, the second output gear, and the power input gear, and their rotational connection with the box body is realized through the axles. The rear end of the axle at the center of the power input gear is externally connected to a driving device, and the front end protrudes from the box body and is concentrically and fixedly sleeved with a sprocket b.

[0005] There are two fixing plates, which are respectively horizontally arranged at the front end and the rear end of the upper part of the box body. A connecting shaft is longitudinally rotated at one end far from the box body between the two fixing plates. A sprocket a is concentrically and fixedly sleeved on the outside of the front end of the connecting shaft. The sprocket a and the sprocket b are connected by an annular chain, and the chain is located at the front end of the box body and the fixing plate.

[0006] Further, the box body and the fixing plate are integrally connected.

[0007] Furthermore, both the shaft at the center of the first output gear and the shaft at the center of the second output gear are concentrically fixed with external power output shafts.

[0008] Furthermore, the intermediate transmission gear and the connecting gear a have the same diameter, while the diameter of the connecting gear b is smaller than that of the connecting gear a.

[0009] The beneficial effects of this utility model are as follows: By setting up a power input gear, a first output gear, a second output gear, an intermediate transmission gear, a connecting gear a, and a connecting gear b, this utility model utilizes a driving device and a rotating shaft at the center of the power input gear to drive the power input gear to rotate. The rotation of the power input gear, through the intermediate transmission gear, drives the connecting gear a and the connecting gear b to rotate. The rotation of the connecting gear a then drives the first output gear to rotate, and the rotation of the connecting gear b drives the second output gear to rotate. Thus, the rotation of the first and second output gears drives the external power output shaft to rotate, achieving power transmission.

[0010] By setting up sprocket b, sprocket a, chain, coupling, and fixing plate, in use, the rotation of the power input gear can simultaneously drive sprocket b to rotate. Thus, the connection between sprocket b and sprocket a via the chain allows sprocket b to rotate while driving sprocket a and coupling, thereby completing power transmission. At the same time, the fixing plate facilitates the limiting installation of the coupling. Overall, this utility model has the advantages of reasonable structural design and good performance. Attached Figure Description

[0011] Figure 1 This is a front view of the present invention.

[0012] Figure 2 This is a front view of the connection between connecting gear a, connecting gear b, intermediate transmission gear, first output gear, second output gear and power input gear in this utility model.

[0013] In the diagram: 1. Housing; 2. Fixing plate; 21. Connecting shaft; 22. Sprocket a; 3. Power input gear; 31. Sprocket b; 4. First output gear; 5. Second output gear; 6. Intermediate transmission gear; 7. Connecting gear a; 8. Connecting gear b; 9. Chain. Detailed Implementation

[0014] The present invention will be further described below with reference to the accompanying drawings.

[0015] Example: Figure 1 , Figure 2As shown in the figure, a gear transmission box for agricultural machinery includes a box body 1 and a fixing plate 2. The box body 1 is in an overall "human" shape. In the middle of the upper end of its interior, a power input gear 3 is provided. On the left side of the lower end of its interior, a first output gear 4 is provided. On the right side of the lower end of its interior, a second output gear 5 is provided. A middle rotating gear 6 is provided directly below the power input gear 3. The middle transmission gear 6 meshes with the power input gear 3. And a connecting gear a7 is provided at the lower left of the middle transmission gear 6, and a connecting gear b8 is provided at the lower right. The connecting gear a7 and the connecting gear b8 do not contact each other. And the connecting gear a7 is located between the middle transmission gear 6 and the first output gear 4 and meshes with both the middle transmission gear 6 and the first output gear 4. The connecting gear b8 is located between the middle transmission gear 6 and the second output gear 5 and meshes with both the middle transmission gear 6 and the second output gear 5. Longitudinal rotating shafts are respectively passed through the centers of the connecting gear a7, the connecting gear b8, the middle transmission gear 6, the first output gear 4, the second output gear 5 and the power input gear 3, and their rotational connection with the box body 1 is realized through the rotating shafts. Among them, the rear end of the rotating shaft at the center of the power input gear 3 is externally connected to a driving device, and the front end protrudes from the box body 1 and is concentrically and fixedly sleeved with a sprocket b31. There are two fixing plates 2, which are respectively horizontally arranged at the front end and the rear end of the upper part of the box body 1. And a connecting shaft 21 is longitudinally rotatably provided at one end far away from the box body 1 between the two fixing plates 2. An externally concentrically fixed sprocket a22 is sleeved on the outside of the front end of the connecting shaft 21. The sprocket a22 and the sprocket b31 are connected by an annular chain 9, and the chain 9 is located at the front end of the box body 1 and the fixing plate 2.

[0016] The box body 1 and the fixing plate 2 are integrally connected. The rotating shafts at the centers of the first output gear 4 and the second output gear 5 are both concentrically and fixedly externally connected with power output shafts. The middle transmission gear 6 and the connecting gear a7 have the same diameter, and the diameter of the connecting gear b8 is smaller than that of the connecting gear a7. With this structure, the first output gear 4 and the second output gear 5 can rotate in the same direction while having inconsistent rotational speeds.

[0017] In use, this invention, by activating the drive device, causes the shaft at the center of the power input gear 3 to rotate. This rotation of the shaft drives the power input gear 3 and the sprocket b31 to rotate. The rotation of the power input gear 3 then drives the connecting gears a7 and b8 via the intermediate transmission gear 6. The rotation of connecting gear a7 drives the first output gear 4, and the rotation of connecting gear b8 drives the second output gear 5. Thus, the rotation of the first and second output gears 4 and 5 drives the external power output shaft to rotate, achieving power transmission. Simultaneously, the rotation of sprocket b31, in conjunction with the chain 9 connecting sprocket b31 and sprocket a22, drives sprocket a22 and the connecting shaft 21 concentrically fixed to sprocket a22 to rotate, thereby achieving power transmission through the connecting shaft 21. Overall, this invention has the advantages of a reasonable structural design and good performance.

[0018] The above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although the utility model has been described in detail with reference to the above embodiments, those skilled in the art should understand that modifications or equivalent substitutions can still be made to the specific implementation of this utility model without departing from the spirit and scope of this utility model. Any modifications or equivalent substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A gear transmission box for agricultural machinery, comprising a box body (1) and a fixing plate (2), characterized in that: The box body (1) is in an overall "human" shape. In the middle of the upper end inside it, a power input gear (3) is provided. On the left side of the lower end inside, a first output gear (4) is provided. On the right side of the lower end inside, a second output gear (5) is provided. Directly below the power input gear (3), an intermediate transmission gear (6) is provided. The intermediate transmission gear (6) meshes with the power input gear (3). And below the left of the intermediate transmission gear (6), a connecting gear a (7) is provided, and below the right, a connecting gear b (8) is provided. The connecting gear a (7) and the connecting gear b (8) do not contact each other. And the connecting gear a (7) is located between the intermediate transmission gear (6) and the first output gear (4), and meshes with both the intermediate transmission gear (6) and the first output gear (4). The connecting gear b (8) is located between the intermediate transmission gear (6) and the second output gear (5), and meshes with both the intermediate transmission gear (6) and the second output gear (5). Longitudinal rotating shafts are provided through the centers of the connecting gear a (7), the connecting gear b (8), the intermediate transmission gear (6), the first output gear (4), the second output gear (5), and the power input gear (3), and their rotational connection with the box body (1) is achieved through the rotating shafts. Among them, the rear end of the rotating shaft at the center of the power input gear (3) is externally connected to a driving device, and the front end protrudes from the box body (1) and is concentrically fixedly sleeved with a sprocket b (31). There are two fixing plates (2), which are respectively horizontally arranged at the front end and the rear end of the upper part of the box body (1). And at one end far from the box body (1) between the two fixing plates (2), a connecting shaft (21) is longitudinally rotatably provided. Externally and concentrically fixedly sleeved on the front end of the connecting shaft (21), a sprocket a (22) is provided. The sprocket a (22) and the sprocket b (31) are connected by an annular chain (9), and the chain (9) is located at the front end of the box body (1) and the fixing plate (2).

2. The gear transmission box for agricultural machinery as described in claim 1, characterized in that: The box body (1) and the fixing plate (2) are integrally connected.

3. The gear transmission box for agricultural machinery as described in claim 1, characterized in that: The rotating shafts at the centers of the first output gear (4) and the second output gear (5) are concentrically fixedly externally connected with power output shafts.

4. The gear transmission box for agricultural machinery as described in claim 1, characterized in that: The intermediate transmission gear (6) and the connecting gear a (7) have the same diameter, and the diameter of the connecting gear b (8) is smaller than the diameter of the connecting gear a (7).

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