Transmission gear assembly for medium and heavy trucks

Abstract

The utility model provides a transmission gear assembly for a medium-heavy truck, and relates to the technical field of gear transmission, the transmission gear assembly for the medium-heavy truck comprises a box body, after a first bevel gear is damaged, a third bevel gear is driven to move towards a second bevel gear to enable the third bevel gear to be meshed with the second bevel gear, and after the third bevel gear is damaged, the third bevel gear is driven to move towards the second bevel gear to enable the third bevel gear to be meshed with the second bevel gear. The first bevel gear is driven to move towards the second bevel gear, so that the first bevel gear is meshed with the second bevel gear, the input shaft is connected with an external power source, the input shaft rotates to drive the second bevel gear to rotate through the first bevel gear or the third bevel gear, and then the second bevel gear rotates to drive the output shaft to rotate. And power output is completed through the output shaft, so that when the first bevel gear is damaged, the third bevel gear is used for temporary standby, when the third bevel gear is damaged, the first bevel gear is used for temporary standby, when no tool exists, repairing and using can be conducted, and power output can be conducted more conveniently.

Description

Technical Field

[0001] The utility model relates to the technical field of gear transmission, in particular to a transmission gear assembly for medium and heavy-duty trucks. Background Technique

[0002] The transmission gear assembly is an important part of the mechanical transmission system and is widely used in various equipment and machinery, such as automobiles, industrial robots, breathing trainers, etc. The transmission gear assembly refers to a mechanical device composed of multiple gears, gear shafts, bearings, boxes and other components, which is used to realize power transmission, speed and torque conversion.

[0003] When the gear is transmitting power, the driving gear is extremely easy to be damaged after long-term use. In the existing transmission gear assembly, after damage occurs, special repair tools are required for repair. When the driver does not have repair tools, power transmission cannot be carried out, affecting its use, and there is great inconvenience. For this reason, the utility model proposes a transmission gear assembly for medium and heavy-duty trucks. Content of the Utility Model

[0004] The purpose of the utility model is to provide a transmission gear assembly for medium and heavy-duty trucks, aiming to solve the problem in the existing technology that after damage occurs, special repair tools are required for repair. When the driver does not have repair tools, power transmission cannot be carried out, affecting its use, and there is great inconvenience.

[0005] To achieve the above purpose, the utility model adopts the following technical scheme: A transmission gear assembly for medium and heavy-duty trucks, including a box body and a transmission part arranged in the box body: the transmission part is used for reversing the transmission of the power source; the transmission part includes an input shaft and an output shaft rotatably connected in the box body, and the axes of the input shaft and the output shaft are perpendicular to each other; a gear set: arranged in the box body and used to connect the input shaft and the output shaft; the gear set includes two first bevel gears and a third bevel gear sleeved on the surface of the input shaft. A connecting part is arranged on the input shaft to connect the first bevel gear and the third bevel gear with the input shaft, so that when the input shaft rotates, it can drive the first bevel gear and the third bevel gear to rotate, and the first bevel gear and the third bevel gear can move along the axial direction of the input shaft. A second bevel gear is fixedly connected to one end of the output shaft close to the input shaft, and the second bevel gear is located between the first bevel gear and the third bevel gear. The second bevel gear has overlapping positions with both the first bevel gear and the third bevel gear. When the first bevel gear moves towards the second bevel gear, the second bevel gear can be meshed with the first bevel gear. When the third bevel gear moves towards the second bevel gear, the third bevel gear can be meshed with the first bevel gear.

[0006] A further technical solution of the present utility model is that the connecting portion includes a first sliding groove formed on the surface of the input shaft. Two first sliding blocks are slidably connected in the first sliding groove, and the two first sliding blocks are respectively fixedly connected to the first bevel gear and the third bevel gear.

[0007] A further technical solution of the present utility model is that a box cover is hinged to the top end of the box body for closing the top end of the box body.

[0008] A further technical solution of the present utility model is that an adjusting portion is arranged in the box body for driving the first bevel gear and the third bevel gear to translate.

[0009] A further technical solution of the present utility model is that the adjusting portion includes two connecting plates sleeved on the surface of the input shaft, and the first bevel gear and the third bevel gear are located between the two connecting plates. The mutually approaching side surfaces of the two connecting plates are respectively rotatably connected to the first bevel gear and the third bevel gear. A lead screw is threadedly connected in the two connecting plates, and both ends of the lead screw are rotatably connected to the inner wall of the box body. A second sliding groove is formed on the inner wall of the box body, and a second sliding block is slidably connected in the second sliding groove, and the second sliding block is fixedly connected to the connecting plate.

[0010] A further technical solution of the present utility model is that a limiting portion is arranged in the box body for positioning the lead screw.

[0011] A further technical solution of the present utility model is that the limiting portion includes a through hole formed in the lead screw. A first groove is formed on the inner bottom wall of the box body, and a second groove is formed on the bottom surface of the box cover. When the box cover closes the top end of the box body, the second groove, the first groove and the through hole are coaxial. An insertion rod is inserted into the through hole so that both ends of the insertion rod are located in the second groove and the first groove.

[0012] The beneficial effects of the present utility model are:

[0013] When the first bevel gear is damaged, drive the third bevel gear to move towards the second bevel gear so that the third bevel gear meshes with the second bevel gear. When the third bevel gear is damaged, drive the first bevel gear to move towards the second bevel gear so that the first bevel gear meshes with the second bevel gear. Connect the input shaft to an external power source. When the input shaft rotates, it can drive the second bevel gear to rotate through the first bevel gear or the third bevel gear. Then, the rotation of the second bevel gear drives the output shaft to rotate, and finally, power output is completed through the output shaft. Thus, it can be realized that when the first bevel gear is damaged, the third bevel gear is used as a temporary backup, and when the third bevel gear is damaged, the first bevel gear is used as a temporary backup. When there are no tools, it can also be repaired and used, and power output can be carried out more conveniently. Description of the Drawings

[0014] Figure 1It is a perspective view in a specific embodiment of the present utility model.

[0015] Figure 2 It is a partial structure cross-sectional view in the side view direction in a specific embodiment of the present utility model.

[0016] Figure 3 It is a structural schematic diagram of a connecting portion in a specific embodiment of the present utility model.

[0017] In the figure: 11, box body; 12, box cover; 21, input shaft; 22, output shaft; 31, first bevel gear; 32, second bevel gear; 33, third bevel gear; 34, first chute; 35, first slider; 41, connecting plate; 42, lead screw; 43, second chute; 44, second slider; 51, through hole; 52, first groove; 53, second groove. Specific Embodiments

[0018] The following further describes the specific embodiments of the present utility model with reference to the accompanying drawings.

[0019] As Figures 1 - 3As shown in the figure, a transmission gear assembly for a medium and heavy-duty truck includes a housing 11. A transmission part is arranged inside the housing 11 and is used for reversing the transmission of power. The transmission part includes an input shaft 21 and an output shaft 22 that are rotatably connected inside the housing 11, and the axes of the input shaft 21 and the output shaft 22 are perpendicular to each other. A gear set is arranged inside the housing 11 and is used to connect the input shaft 21 and the output shaft 22. The gear set includes two first bevel gears 31 and a third bevel gear 33 sleeved on the surface of the input shaft 21. A connecting part is arranged on the input shaft 21 and is used to connect the first bevel gear 31 and the third bevel gear 33 to the input shaft 21, so that when the input shaft 21 rotates, it can drive the first bevel gear 31 and the third bevel gear 33 to rotate, and the first bevel gear 31 and the third bevel gear 33 can move along the axial direction of the input shaft 21. One end of the output shaft 22 close to the input shaft 21 is fixedly connected with a second bevel gear 32, and the second bevel gear 32 is located between the first bevel gear 31 and the third bevel gear 33. The second bevel gear 32 has an overlapping position with both the first bevel gear 31 and the third bevel gear 33. When the first bevel gear 31 moves towards the second bevel gear 32, the second bevel gear 32 can mesh with the first bevel gear 31. When the third bevel gear 33 moves towards the second bevel gear 32, the third bevel gear 33 can mesh with the first bevel gear 31. Connect the input shaft 21 to the power source. When the input shaft 21 rotates, it can drive the first bevel gear 31 and the third bevel gear 33 to rotate. When the first bevel gear 31 or the third bevel gear 33 meshes with the second bevel gear 32, it can drive the output shaft 22 to rotate and complete the power output. When the first bevel gear 31 is damaged, drive the third bevel gear 33 to move towards the second bevel gear 32 so that the third bevel gear 33 meshes with the second bevel gear 32 to complete the power output. When the third bevel gear 33 is damaged, drive the first bevel gear 31 to move towards the second bevel gear 32 so that the first bevel gear 31 meshes with the second bevel gear 32 to complete the power output. Thus, it can be realized that when the first bevel gear 31 is damaged, the third bevel gear 33 is used as a temporary backup, and when the third bevel gear 33 is damaged, the first bevel gear 31 is used as a temporary backup. When there are no tools, it can also be repaired and used, and the power output can be more convenient.

[0020] As Figure 3As shown, the connecting portion includes a first sliding groove 34 formed on the surface of the input shaft 21. Two first sliding blocks 35 are slidably connected in the first sliding groove 34, and the two first sliding blocks 35 are respectively fixedly connected to the first bevel gear 31 and the third bevel gear 33. When the input shaft 21 rotates, the first bevel gear 31 and the third bevel gear 33 can be rotated through the limitation of the first sliding groove 34 and the first sliding blocks 35. When the first bevel gear 31 and the third bevel gear 33 move, they can drive the first sliding blocks 35 to slide in the first sliding groove 34. Thus, it can be realized that the input shaft 21 can drive the first bevel gear 31 and the third bevel gear 33 to rotate, and can also make the first bevel gear 31 and the third bevel gear 33 translate along the axial direction of the input shaft 21.

[0021] As Figure 1 and Figure 2 shown, a box cover 12 is hinged to the top end of the box body 11, which is used to close the top end of the box body 11 and protect the transmission part and the gear set.

[0022] As Figures 1 - 3 shown, an adjusting portion is arranged in the box body 11, which is used to drive the first bevel gear 31 and the third bevel gear 33 to translate, so that the first bevel gear 31 and the third bevel gear 33 can be more conveniently engaged with the second bevel gear 32. The adjusting portion includes two connecting plates 41 sleeved on the surface of the input shaft 21, and the first bevel gear 31 and the third bevel gear 33 are located between the two connecting plates 41. The mutually close side surfaces of the two connecting plates 41 are respectively rotatably connected to the first bevel gear 31 and the third bevel gear 33. A lead screw 42 is threadedly connected in the two connecting plates 41, and the two ends of the lead screw 42 are rotatably connected to the inner wall of the box body 11. A second sliding groove 43 is formed on the inner wall of the box body 11. A second sliding block 44 is slidably connected in the second sliding groove 43, and the second sliding block 44 is fixedly connected to the connecting plate 41. When the lead screw 42 rotates, under the limitation of the second sliding groove 43 and the second sliding block 44, the connecting plate 41 can be driven to move. When the connecting plate 41 moves, it can drive the first bevel gear 31 and the third bevel gear 33 to move. Thus, it can be conveniently made that the first bevel gear 31 or the third bevel gear 33 is engaged with the second bevel gear 32.

[0023] As Figure 2As shown in the figure, a limiting part is arranged inside the box body 11 for positioning the lead screw 42 to prevent the lead screw 42 from rotating due to vibration during vehicle driving, which may finally cause the first bevel gear 31 or the third bevel gear 33 to be separated from the second bevel gear 32. The limiting part includes a through hole 51 opened in the lead screw 42, a first groove 52 opened on the inner bottom wall of the box body 11, and a second groove 53 opened on the bottom surface of the box cover 12. When the box cover 12 closes the top end of the box body 11, the second groove 53, the first groove 52, and the through hole 51 are in a coaxial state. Insert an insertion rod into the through hole 51 so that both ends of the insertion rod are located in the second groove 53 and the first groove 52, and the lead screw 42 can be positioned to prevent the lead screw 42 from rotating under non-subjective circumstances.

[0024] Working principle: When the first bevel gear 31 is damaged, drive the third bevel gear 33 to move towards the second bevel gear 32 so that the third bevel gear 33 meshes with the second bevel gear 32. When the third bevel gear 33 is damaged, drive the first bevel gear 31 to move towards the second bevel gear 32 so that the first bevel gear 31 meshes with the second bevel gear 32. Connect the input shaft 21 to an external power source. When the input shaft 21 rotates, it can drive the second bevel gear 32 to rotate through the first bevel gear 31 or the third bevel gear 33. Then, the rotation of the second bevel gear 32 drives the output shaft 22 to rotate, and finally, power output is completed through the output shaft 22. Thus, when the first bevel gear 31 is damaged, the third bevel gear 33 can be used as a temporary backup, and when the third bevel gear 33 is damaged, the first bevel gear 31 can be used as a temporary backup. When there are no tools, it can also be repaired and used, and power output can be more convenient.

[0025] For those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and without departing from the spirit or basic characteristics of the present invention, the present invention can be implemented in other specific forms. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present invention. Any reference signs in the claims should not be regarded as limiting the claimed rights.

[0026] In addition, it should be understood that although this specification is described according to embodiments, not every embodiment only contains an independent technical solution. This narrative way of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A transmission gear assembly for medium and heavy-duty trucks, characterized in that: It includes a box body (11) and a transmission part arranged in the box body (11): the transmission part is used for reversing the transmission of the power source; The transmission part includes an input shaft (21) and an output shaft (22) rotatably connected in the box body (11), and the axes of the input shaft (21) and the output shaft (22) are perpendicular to each other; Gear set: arranged in the box body (11) for connecting the input shaft (21) and the output shaft (22); The gear set includes two first bevel gears (31) and a third bevel gear (33) sleeved on the surface of the input shaft (21). A connecting part is arranged on the input shaft (21) for connecting the first bevel gear (31) and the third bevel gear (33) to the input shaft (21), so that when the input shaft (21) rotates, it can drive the first bevel gear (31) and the third bevel gear (33) to rotate, and the first bevel gear (31) and the third bevel gear (33) can move along the axial direction of the input shaft (21). One end of the output shaft (22) close to the input shaft (21) is fixedly connected with a second bevel gear (32), and the second bevel gear (32) is located between the first bevel gear (31) and the third bevel gear (33). The second bevel gear (32) has overlapping positions with both the first bevel gear (31) and the third bevel gear (33). When the first bevel gear (31) moves towards the second bevel gear (32), the second bevel gear (32) can mesh with the first bevel gear (31). When the third bevel gear (33) moves towards the second bevel gear (32), the third bevel gear (33) can mesh with the first bevel gear (31).

2. The transmission gear assembly for medium and heavy-duty trucks according to claim 1, wherein The connecting part includes a first chute (34) opened on the surface of the input shaft (21). Two first sliders (35) are slidably connected in the first chute (34), and the two first sliders (35) are respectively fixedly connected with the first bevel gear (31) and the third bevel gear (33).

3. A transmission gear assembly for medium and heavy-duty trucks according to claim 1, characterized in that, The top end of the box body (11) is hinged with a box cover (12) for closing the top end of the box body (11).

4. A transmission gear assembly for medium and heavy-duty trucks according to claim 1, characterized in that, An adjusting part is arranged in the box body (11) for driving the first bevel gear (31) and the third bevel gear (33) to translate.

5. A transmission gear assembly for medium and heavy-duty trucks according to claim 4, characterized in that, The adjusting part includes two connecting plates (41) sleeved on the surface of the input shaft (21), and the first bevel gear (31) and the third bevel gear (33) are located between the two connecting plates (41). The mutually close sides of the two connecting plates (41) are respectively rotatably connected with the first bevel gear (31) and the third bevel gear (33). A lead screw (42) is threadedly connected in the two connecting plates (41), and both ends of the lead screw (42) are rotatably connected with the inner wall of the box body (11). A second chute (43) is opened on the inner wall of the box body (11). A second slider (44) is slidably connected in the second chute (43), and the second slider (44) is fixedly connected with the connecting plate (41).

6. A transmission gear assembly for a medium and heavy-duty truck according to claim 1, characterized in that, A limiting part is arranged in the box body (11) for positioning the lead screw (42).

7. A transmission gear assembly for medium and heavy-duty trucks according to claim 6, characterized in that, The limiting part includes a through hole (51) formed in the lead screw (42), a first groove (52) is formed in the inner bottom wall of the box body (11), and a second groove (53) is formed in the bottom surface of the box cover (12). When the box cover (12) closes the top end of the box body (11), the second groove (53), the first groove (52) and the through hole (51) are in a coaxial state. An insertion rod is inserted into the through hole (51) so that both ends of the insertion rod are located in the second groove (53) and the first groove (52).

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