Longitudinal displacement to the three-stage gear reducer

Abstract

The utility model relates to gear reducer technical field, concretely relates to a longitudinal replacement direction formula three -stage gear reducer. Including the front casing and rear casing of gear reducer and the longitudinal placement cavity between the front casing and rear casing, the longitudinal placement cavity is built -in input shaft, intermediate shaft and output shaft, wherein: the left side input end of input shaft is connected with the output end of motor through the front casing, the right side of intermediate shaft is engaged with the skew tooth I of the middle part of input shaft through skew tooth II, the middle part of output shaft is engaged with the skew tooth III of the left side of intermediate shaft through skew tooth IV, the right side output end of output shaft is connected with the spiral bevel gear II of the differential mechanism in the rear casing through spiral bevel gear I, the output end of motor and the output end of output shaft are perpendicular to each other. The utility model cooperates two -stage skew tooth deceleration and one -stage spiral bevel gear deceleration reversal, can adapt to the arrangement environment of limited horizontal space but sufficient longitudinal space, effectively improves space utilization, satisfies specific scene demand.

Description

Technical Field

[0001] This utility model relates to the field of gear reducer technology, specifically to a longitudinally oriented three-stage gear reducer. Background Technology

[0002] In the field of mechanical transmission, gear reducers are widely used as common power transmission and speed reduction devices. However, existing gear reducers have many shortcomings in practical applications. Taking the novel helical gear reducer disclosed in Chinese Patent Publication No. CN210196364U as an example, although it achieves power transmission and speed reduction functions, it has significant problems in spatial adaptability. Most similar products on the market adopt a parallel shaft structure, requiring the motor and output shaft to be parallel. Although this patent provides an arrangement where the motor and output shaft are perpendicular, the overall structure still cannot meet the specific environmental requirements of limited lateral space and ample longitudinal space. This makes it difficult to install in many confined space scenarios, thus limiting its application range and making it difficult to meet diverse practical needs. Utility Model Content

[0003] The technical problem to be solved by this utility model is to overcome the shortcomings of the prior art and provide a longitudinal displacement three-stage gear reducer.

[0004] The technical solution adopted in this utility model is as follows: A longitudinally oriented reversing three-stage gear reducer includes a front housing and a rear housing, and a longitudinal cavity located between the front housing and the rear housing. The longitudinal cavity houses an input shaft, an intermediate shaft, and an output shaft, wherein: The input shaft is located at the top of the vertical cavity, and the left input end of the input shaft is connected to the output end of the motor through the front housing; The intermediate shaft is located in the middle of the longitudinal cavity. The right side of the intermediate shaft meshes with the helical gear I in the middle of the input shaft through helical gear II. The output shaft is located at the bottom of the longitudinal cavity. The middle part of the output shaft meshes with the helical tooth III on the left side of the intermediate shaft through helical tooth IV. The right output end of the output shaft is connected to the helical bevel tooth II of the differential located in the rear housing through helical bevel tooth I. In addition, the output end of the motor is perpendicular to the output end of the output shaft.

[0005] This technical solution utilizes a two-stage helical gear transmission structure and a spiral bevel gear reversing device to achieve effective power transmission and deceleration in different directions, meeting the needs for power transmission and direction change under specific spatial arrangements. Specifically, the motor output shaft drives the input shaft to rotate. Helical gear I on the input shaft meshes with helical gear II on the intermediate shaft, transmitting power to the intermediate shaft and initially decelerating it. Helical gear III on the intermediate shaft then meshes with helical gear IV on the output shaft for further deceleration. Finally, the output shaft transmits power to the differential via the spiral bevel gear. Through the two-stage helical gear transmission and the different gear ratios of the helical gears, deceleration is achieved. The spiral bevel gear enables both deceleration and reversal, adapting to layout environments with limited lateral space but ample longitudinal space, thus improving space utilization.

[0006] In addition, the longitudinally oriented three-stage gear reducer proposed above according to this utility model may also have the following additional technical features: According to one embodiment of the present invention, the input shaft, intermediate shaft and output shaft are all mounted in the corresponding mounting holes of the longitudinal cavity by bearings.

[0007] In this technical solution, the input shaft receives power from the motor and begins to rotate. Due to the support of the bearings, it can rotate stably within the mounting hole, transmitting power smoothly. The intermediate shaft is connected to the input shaft via a helical gear set and rotates under the drive of the input shaft. It also relies on the support of the bearings to maintain stable operation, realizing intermediate power transmission. The output shaft meshes with the intermediate shaft via a helical gear set and rotates under the drive of the intermediate shaft, outputting power through the support of the bearings.

[0008] According to one embodiment of the present invention, both the front and rear housings are made of aluminum, with a total center distance of 170mm, wherein the first-level center distance is 75mm and the second-level center distance is 95mm.

[0009] In this technical solution, the different center distances of the first and second stages are designed to rationally allocate the transmission ratios of the helical gears at each stage, meet the requirements for output speed and torque under different working conditions, achieve the expected deceleration effect, and reduce helical gear wear and noise.

[0010] According to one embodiment of the present invention, the maximum speed of the motor is 13000 Rpm, and the maximum input torque of the gear reducer is 120 N·m.

[0011] In this technical solution, when the motor inputs power at a high speed of 13000 Rpm, the gear reducer converts the high-speed, low-torque power into low-speed, high-torque power output to meet the load's demand for high torque; and the maximum input torque of the gear reducer is set to 120 N·m to match the motor and achieve specific power conversion.

[0012] According to one embodiment of the present invention, the internal spline of the motor is connected to the external spline of the input shaft. The torque is amplified by the input shaft, intermediate shaft, output shaft, and spiral bevel gear I. The output end of the output shaft is connected to the differential through spiral bevel gear I. The torque is amplified and output to the spiral bevel gear II of the differential, which drives the half shaft to transmit torque and differential speed.

[0013] In this technical solution, the output shaft is connected to the differential via a spiral bevel gear I. The spiral bevel gear I not only changes the direction of power transmission but also maintains torque transmission. The function of the differential is to allow the two half-shafts to rotate at different speeds when the vehicle is turning, thus achieving differential speed control.

[0014] According to one embodiment of the present invention, the differential includes a differential housing, and planetary helical gears, spiral bevel gears II and planetary helical gear shaft disposed within the differential housing. Spiral bevel gears I and II mesh with each other, and differential speed is achieved through the cooperation of planetary helical gears and spiral bevel gears II.

[0015] Compared with the prior art, this utility model has the following advantages: (1) The motor output shaft is perpendicular to the output end of the output shaft. With the help of two-stage helical gear reduction and one-stage spiral bevel gear reduction for reversing, it can adapt to the layout environment with limited horizontal space but sufficient vertical space, effectively improve the space utilization rate and meet the needs of specific scenarios.

[0016] (2) The input shaft, intermediate shaft and output shaft are mounted in the longitudinal cavity through bearings, which ensures stable operation and reduces power loss; the center distance of each stage is reasonably allocated, the transmission ratio is optimized, the wear of helical teeth and noise are reduced, and efficient and smooth power transmission and deceleration are achieved. Attached Figure Description

[0017] Figure 1 This is a cross-sectional view of the present invention.

[0018] Figure 2 This is a perspective view of the present invention.

[0019] In the diagram: 1. Input shaft; 2. Intermediate shaft; 3. Output shaft; 4. Differential; 5. Front housing; 6. Rear housing; 7. Helical gear I; 8. Helical gear II; 9. Helical gear III; 10. Helical gear IV; 11. Spiral bevel gear IⅠ; 12. Spiral bevel gear IⅡ. Detailed Implementation

[0020] 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, 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.

[0021] Example 1 like Figures 1 to 2 As shown, this embodiment provides a longitudinally oriented reversing three-stage gear reducer, including a front housing 5 and a rear housing 6, and a longitudinal cavity located between the front housing 5 and the rear housing 6. The longitudinal cavity houses an input shaft 1, an intermediate shaft 2, and an output shaft 3, wherein: Input shaft 1 is located at the top of the vertical cavity. The left input end of input shaft 1 is connected to the output end 3 of the motor through the front housing 5. Intermediate shaft 2 is located in the middle of the longitudinal cavity. The right side of intermediate shaft 2 meshes with helical gear I7 in the middle of input shaft 1 through helical gear II8. Output shaft 3 is located at the lower part of the longitudinal cavity. The middle part of output shaft 3 meshes with helical tooth Ⅲ9 on the left side of intermediate shaft 2 through helical tooth Ⅳ10. The right output end of output shaft 3 is connected to helical bevel tooth Ⅱ12 of differential 4 located in rear housing 6 through helical bevel tooth Ⅰ11. In addition, the output end of the motor is perpendicular to the output end of the output shaft 3.

[0022] like Figures 1 to 2 As shown, this technical solution, through the setting of a two-stage helical gear transmission structure and a spiral bevel gear reversing device, achieves effective transmission and deceleration of motor power in different directions, meeting the needs for power transmission and direction change under specific spatial arrangements. Specifically, the motor output shaft 3 drives the input shaft 1 to rotate. The helical gear I7 on the input shaft 1 meshes with the helical gear II8 on the intermediate shaft 2, transmitting power to the intermediate shaft 2 and initially decelerating it. The helical gear III9 on the intermediate shaft 2 then meshes with the helical gear IV10 on the output shaft 3, further decelerating it. Finally, the output shaft 3 transmits power to the differential 4 through the spiral bevel gear. Through the two-stage helical gear transmission and the different gear ratios of the helical gears, deceleration is achieved. The spiral bevel gear realizes deceleration and reversing, which can adapt to the layout environment with limited lateral space but sufficient longitudinal space, improving space utilization.

[0023] In addition, the longitudinally oriented three-stage gear reducer proposed above according to this utility model may also have the following additional technical features: According to one embodiment of the present invention, the input shaft 1, intermediate shaft 2 and output shaft 3 are all mounted in the corresponding mounting holes of the longitudinal cavity by bearings.

[0024] In this technical solution, the input shaft 1 receives power from the motor and begins to rotate. Due to the support of the bearing, it can rotate stably within the mounting hole, transmitting power smoothly. The intermediate shaft 2 is connected to the input shaft 1 through a helical gear set and rotates under the drive of the input shaft 1. It also relies on the support of the bearing to maintain stable operation, realizing intermediate power transmission. The output shaft 3 meshes with the intermediate shaft 2 through a helical gear set and rotates under the drive of the intermediate shaft 2, outputting power through the support of the bearing.

[0025] According to one embodiment of the present invention, both the front housing 5 and the rear housing 6 are made of aluminum, with a total center distance of 170mm, wherein the first-level center distance is 75mm and the second-level center distance is 95mm.

[0026] In this technical solution, the different center distances of the first and second stages are designed to rationally allocate the transmission ratios of the helical gears at each stage, meet the requirements for output speed and torque under different working conditions, achieve the expected deceleration effect, and reduce helical gear wear and noise.

[0027] According to one embodiment of the present invention, the maximum speed of the motor is 13000 Rpm, and the maximum input torque of the gear reducer is 120 N·m.

[0028] In this technical solution, when the motor inputs power at a high speed of 13000 Rpm, the gear reducer converts the high-speed, low-torque power into low-speed, high-torque power output to meet the load's demand for high torque; and the maximum input torque of the gear reducer is set to 120 N•m to match the motor and achieve specific power conversion.

[0029] According to one embodiment of the present invention, the internal spline of the motor is connected to the external spline of the input shaft 1. The torque is reduced and amplified through the input shaft 1, intermediate shaft 2, output shaft 3, and spiral bevel gear I11. The output end of the output shaft 3 is connected to the differential 4 through the spiral bevel gear I11. The torque is amplified and output to the spiral bevel gear II of the differential 4, which drives the half shaft to transmit torque and differential speed.

[0030] In this technical solution, the output shaft 3 is connected to the differential 4 via a spiral bevel gear I11. The spiral bevel gear I11 not only changes the direction of power transmission but also maintains torque transmission. The function of the differential 4 is to allow the two half-shafts to rotate at different speeds when the vehicle is turning, thus achieving differential function.

[0031] According to one embodiment of the present invention, the differential 4 includes a differential housing, and planetary helical teeth, spiral bevel teeth II and planetary helical tooth shaft disposed in the differential housing. Spiral bevel teeth I11 mesh with spiral bevel teeth II, and differential speed is achieved through the cooperation of planetary helical teeth and spiral bevel teeth II.

[0032] The usage process of the above embodiments is as follows: like Figures 1 to 2 As shown, when the motor is working, its output shaft 3 is connected to the input shaft 1 through internal and external splines to transmit power. The input shaft 1 rotates and meshes with the helical gear II 8 of the intermediate shaft 2 through the helical gear I 7. Due to the different number of teeth of the helical gears, the initial deceleration is achieved, and the power is transmitted to the intermediate shaft 2. The intermediate shaft 2 then meshes with the helical gear IV 10 of the output shaft 3 through the helical gear III 9 for further deceleration. The two-stage helical gear transmission uses different tooth ratios to gradually reduce the speed and increase the torque to meet the load's demand for high torque. The output shaft 3 changes the direction of power through the spiral bevel gear I 11 and transmits it to the differential 4. The spiral bevel gear I 11 and the spiral bevel gear II 12 work together to both change direction and maintain torque transmission. The planetary helical gears and the spiral bevel gear II 12 in the differential 4 work together to allow the two half shafts to rotate at different speeds under conditions such as vehicle turning, thus realizing the differential function. At the same time, the aluminum housing reduces weight, the reasonably distributed center distance optimizes the transmission ratio, and the bearings ensure stable shaft operation, together achieving efficient, stable, and space-adaptable power transmission and deceleration.

[0033] Although the present invention has been described in detail with reference to the accompanying drawings and preferred embodiments, it is not limited thereto. Various equivalent modifications or substitutions can be made to the embodiments of the present invention by those skilled in the art without departing from the spirit and essence of the present invention, and such modifications or substitutions should all be within the scope of the present invention. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present invention should also be included within the protection scope of the present invention. Therefore, the protection scope of the present invention should be determined by the scope of the claims.

Claims

1. A longitudinally oriented, three-stage gear reducer, characterized in that, The gear reducer includes a front housing (5) and a rear housing (6), and a longitudinal cavity located between the front housing (5) and the rear housing (6). The longitudinal cavity houses an input shaft (1), an intermediate shaft (2), and an output shaft (3), wherein: The input shaft (1) is located at the top of the longitudinal cavity. The left input end of the input shaft (1) is connected to the output shaft (3) of the motor through the front housing (5). The intermediate shaft (2) is located in the middle of the longitudinal cavity. The right side of the intermediate shaft (2) meshes with the helical gear I (7) in the middle of the input shaft (1) through the helical gear II (8). The output shaft (3) is located at the bottom of the longitudinal cavity. The middle part of the output shaft (3) meshes with the helical tooth III (9) on the left side of the intermediate shaft (2) through the helical tooth IV (10). The right output end of the output shaft (3) is connected to the helical bevel tooth II (12) of the differential (4) located in the rear housing (6) through the helical bevel tooth I (11). In addition, the output end of the motor is perpendicular to the output end of the output shaft (3).

2. The longitudinally oriented three-stage gear reducer as described in claim 1, characterized in that, The input shaft (1), intermediate shaft (2) and output shaft (3) are all mounted in the corresponding mounting holes of the longitudinal cavity via bearings.

3. The longitudinally oriented, three-stage gear reducer as described in claim 1, characterized in that, Both the front housing (5) and the rear housing (6) are made of aluminum, with a total center distance of 170mm, of which the first-level center distance is 75mm and the second-level center distance is 95mm.

4. The longitudinally oriented three-stage gear reducer as described in claim 1, characterized in that, The maximum speed of the motor is 13000 Rpm, and the maximum input torque of the gear reducer is 120 N·m.

5. The longitudinally oriented reversing three-stage gear reducer as described in claim 1 or 4, characterized in that, The internal spline of the motor is connected to the external spline of the input shaft (1). The torque is reduced and amplified through the input shaft (1), intermediate shaft (2), output shaft (3), and spiral bevel gear I (11). The output end of the output shaft (3) is connected to the differential (4) through the spiral bevel gear I (11). The torque is amplified and output to the spiral bevel gear II (12) of the differential (4), which drives the half shaft to transmit torque and differential speed.

6. The longitudinally oriented three-stage gear reducer as described in claim 5, characterized in that, The differential (4) includes a differential housing, and planetary helical teeth, spiral bevel teeth II (12) and planetary helical tooth shaft disposed in the differential housing. Spiral bevel teeth I (11) mesh with spiral bevel teeth II (12), and differential speed is achieved through the cooperation of planetary helical teeth and spiral bevel teeth II (12).

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