Crawler running platform and transmission gear set and transmission thereof

Abstract

The utility model provides a track traveling platform and a transmission gear set and a transmission thereof, which belong to the technical field of transmission gears and comprise a first power source, a planetary gear train, a first transmission gear train, a second power source, a second transmission gear train and a third transmission gear train, the first power input end is connected with a first power source, and the first power output end is connected with the gear ring; the second transmission wheel train is provided with a second power input end and a second power output end, the second power input end is connected with a second power source, and the second power output end is connected with the sun gear; the third transmission wheel train is provided with a third power input end and a third power output end, the third power input end is connected with the planet carrier, and the third power output end is connected with the half shaft. Accurate stepless speed regulation can be achieved through the transmission gear set of the crawler traveling platform, and the transmission efficiency is high.

Description

Technical Field

[0001] The utility model belongs to the technical field of transmission gears, and particularly relates to a crawler running platform, a transmission gear set thereof, and a transmission. Background Art

[0002] A transmission is a speed-changing device used to coordinate the rotational speed of an engine and the actual running speed of wheels, and is used to exert the best performance of the engine. The transmission can transmit power through gears with different transmission ratios during the running of the vehicle, generating different speed ratios between the engine and the wheels, so that the vehicle can adapt to different running environments.

[0003] At present, due to the large self-weight of the crawler running platform, its transmission needs to have a large torque to drive the crawler running platform to move. For example, an HST hydrostatic continuously variable transmission is used for stepless speed change on the crawler running platform. However, during the use of the HST hydrostatic continuously variable transmission, hydraulic pressure is required to adjust the speed, so the power loss is large during the transmission process. Moreover, during the speed regulation process of the HST hydrostatic continuously variable transmission, the speed of the crawler running platform will decrease due to the increase in its load weight, so it is difficult to achieve precise speed regulation for the crawler running platform. Summary of the Utility Model

[0004] In view of the above-mentioned disadvantages of the prior art, the purpose of the present utility model is to provide a crawler running platform, a transmission gear set thereof, and a transmission, which are used to solve the problems such as large power transmission loss and difficulty in achieving precise speed regulation in the transmission of the crawler running platform in the prior art.

[0005] To achieve the above purpose and other related purposes, the present utility model provides a transmission gear set for a crawler running platform, including:

[0006] A first power source;

[0007] A planetary gear train, including a sun gear, planetary gears, a ring gear, and a planet carrier;

[0008] A first transmission gear train, having a first power input end and a first power output end, the first power input end is connected to the first power source, and the first power output end is connected to the ring gear;

[0009] A second power source;

[0010] A second transmission gear train, having a second power input end and a second power output end, the second power input end is connected to the second power source, and the second power output end is connected to the sun gear;

[0011] The third transmission gear train has a third power input end and a third power output end. The third power input end is connected to the planet carrier, and the third power output end is connected to the half shaft.

[0012] Wherein, the number of the planetary gear trains is 2. The second transmission gear train and the third transmission gear train are respectively arranged corresponding to each of the planetary gear trains. Both of the two planetary gear trains are connected to the first power source through the first transmission gear train.

[0013] Optionally, the first transmission gear train includes a first output shaft, a first gear, a first shaft, a second gear, a third gear, a fourth gear and a fifth gear. The first gear is fixedly connected to the first output shaft. The second gear and the third gear are slidably connected to the first output shaft, and the second gear and the third gear are fixedly connected and rotate together. The first power source is used to drive the first output shaft to rotate. The fourth gear and the fifth gear are fixedly connected to the first shaft. The first gear and the fourth gear are meshed to drive the first shaft to rotate. The fifth gear is meshed with the second gear. The two third gears are respectively meshed with the corresponding ring gears.

[0014] Optionally, both of the two second transmission gear trains include a sixth gear, a seventh gear and an eighth gear. The second power source has a second output shaft. The sixth gear is arranged on the second output shaft. The seventh gear is arranged between the sixth gear and the eighth gear and is respectively meshed with the sixth gear and the eighth gear. The eighth gear and the sun gear are connected through a first transmission shaft and rotate together.

[0015] Optionally, the third transmission gear train includes a first bevel gear, a second bevel gear, a second shaft, a ninth gear and a tenth gear. The planet carrier is connected to the first bevel gear. The first bevel gear and the second bevel gear are meshed. The second bevel gear and the ninth gear are fixedly connected to the second shaft. The tenth gear is arranged on the half shaft and is meshed with the ninth gear.

[0016] Optionally, the crawler running platform transmission gear set further includes an execution gear train. One end of the first output shaft is provided with the first power source, and the other end of the first output shaft is provided with the execution gear train.

[0017] Optionally, a brake is further arranged between the execution gear train and the first power source. The brake includes a brake pad and a brake housing for clamping the brake pad to rotate. The brake housing is fixedly connected to the first output shaft, and the brake pad is fixedly connected to the execution gear train.

[0018] Optionally, the first power source is an engine.

[0019] Optionally, the second power source is an electric motor.

[0020] The utility model provides a crawler running platform transmission, which includes the crawler running platform transmission gear set as described above.

[0021] The utility model provides a crawler running platform, which includes the crawler running platform transmission gear set as described above.

[0022] As described above, a crawler running platform, its transmission gear set and transmission of the utility model have the following beneficial effects:

[0023] By arranging the planetary gears and the corresponding first transmission train, second transmission train and third transmission train, during the process of the first power source driving the first transmission train to transmit, the rotation speed of the half shaft can be changed by the second power source. Thus, during the running process of the crawler running platform, the speeds of the corresponding half shafts can be respectively adjusted by the second power source to achieve precise stepless speed regulation of the crawler running platform. At the same time, the transmission efficiency of the crawler running platform transmission gear set is high, and it has good industrial popularization value. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It shows a schematic diagram of the transmission structure of the crawler vehicle transmission according to the embodiment of the present invention.

[0025] Reference numerals: 1, engine; 2, first output shaft; 3, eighth gear; 4, seventh gear; 5, sixth gear; 6, second output shaft; 7, electric motor; 8, fourth gear; 9, first shaft; 10, first gear; 11, fifth gear; 12, second gear; 13, first transmission shaft; 14, planetary gear; 15, sun gear; 16, ring gear; 17, planet carrier; 18, third gear; 19, first bevel gear; 20, second bevel gear; 21, second shaft; 22, ninth gear; 23, tenth gear; 24, half shaft; 25, brake; 26, first actuating gear; 27, transmission conversion shaft; 28, second actuating gear; 29, third actuating gear; 30, fourth actuating gear; 31, fifth actuating gear; 32, sixth actuating gear; 33, seventh actuating gear; 34, actuating output shaft. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0026] The following specific embodiments illustrate the implementation manners of the utility model. Those skilled in the art can easily understand other advantages and effects of the utility model from the content disclosed in this specification.

[0027] Please refer to Figure 1It should be noted that the structures, proportions, sizes, etc. shown in the drawings of this specification are only used to cooperate with the content disclosed in the specification for those familiar with this technology to understand and read, and are not used to limit the conditions under which the present utility model can be implemented. Therefore, they do not have any substantial technical significance. Any modification of the structure, change in the proportional relationship, or adjustment of the size, without affecting the effects that the present utility model can produce and the purposes that can be achieved, should still fall within the scope that can be covered by the technical content disclosed in the present utility model. At the same time, the terms such as "upper", "lower", "left", "right", "middle", and "one" cited in this specification are only for the convenience of clear description and are not used to limit the scope in which the present utility model can be implemented. The change or adjustment of their relative relationships, without substantial change in the technical content, should also be regarded as the scope in which the present utility model can be implemented.

[0028] In order to be able to describe the present utility model in detail, a crawler travel platform, its transmission gear set, and transmission of the present utility model will be specifically described as follows:

[0029] Please refer to Figure 1 As shown, the present utility model provides a transmission gear set for a crawler travel platform, which includes a first power source, a planetary gear train, a first transmission gear train, a second power source, a second transmission gear train, and a third transmission gear train. The planetary gear train includes a sun gear 15, planetary gears 14, a ring gear 16, and a planet carrier 17. The first transmission gear train has a first power input end and a first power output end. The first power input end is connected to the first power source, and the first power output end is connected to the ring gear 16. The second transmission gear train has a second power input end and a second power output end. The second power input end is connected to the second power source, and the second power output end is connected to the sun gear 15. The third transmission gear train has a third power input end and a third power output end. The third power input end is connected to the planet carrier 17, and the third power output end is connected to a half shaft 24. Among them, the number of planetary gear trains is 2. The second transmission gear train and the third transmission gear train are respectively provided corresponding to each planetary gear train. Both planetary gear trains are connected to the first power source through the first transmission gear train. By setting the planetary gears 14 and the corresponding first, second, and third transmission gear trains, during the process of the first power source driving the first transmission gear train to transmit power, the speed of the half shaft 24 can be changed by the second power source. Thus, during the travel of the crawler travel platform, the speed of the corresponding half shaft 24 can be adjusted respectively by the second power source to achieve precise stepless speed regulation of the crawler travel platform. At the same time, the transmission efficiency of the transmission gear set of the crawler travel platform is high.

[0030] In this embodiment, the first power source is the engine 1, which can continuously output high power during the running of the crawler running platform, ensuring the continuous output of high torque during the running of the crawler running platform and realizing the stable running state of the crawler running platform. The second power source is the motor 7, which has high speed regulation accuracy and fast speed change, facilitating precise stepless speed regulation during the running of the crawler running platform. At the same time, an energy storage battery is configured on the motor 7. When the motor 7 does not output power, the engine 1 can charge the energy storage battery during rotation to ensure the continuous use of the motor 7.

[0031] Among them, the first transmission gear train includes a first output shaft 2, a first gear 10, a first shaft 9, a second gear 12, a third gear 18, a fourth gear 8 and a fifth gear 11. The first gear 10 is fixedly connected to the first output shaft 2. The second gear 12 and the third gear 18 are slidably connected to the first output shaft 2, and the second gear 12 and the third gear 18 are fixedly connected and rotate together. The first power source is used to drive the first output shaft 2 to rotate. The fourth gear 8 and the fifth gear 11 are fixedly connected to the first shaft 9. The first gear 10 and the fourth gear 8 are meshed to drive the first shaft 9 to rotate. The fifth gear 11 is meshed with the second gear 12, and the two third gears 18 are respectively meshed with the corresponding gear rings 16. By setting the first transmission gear train, the rotation speed of the power output to the second power source can be adjusted, facilitating the adjustment of the gear speed, and the structure of the first transmission gear train is simple, and the installation and assembly are convenient.

[0032] Among them, both of the two second transmission gear trains include a sixth gear 5, a seventh gear 4 and an eighth gear 3. The second power source has a second output shaft 6. The sixth gear 5 is arranged on the second output shaft 6. The seventh gear 4 is arranged between the sixth gear 5 and the eighth gear 3 and is respectively meshed with the sixth gear 5 and the eighth gear 3. The eighth gear 3 and the sun gear 15 are connected and rotate together through a first transmission shaft 13. By setting the sixth gear 5, the seventh gear 4 and the eighth gear 3, while ensuring the transmission efficiency, the distance between the second power source and the first output shaft 2 can be increased to meet the layout space requirements inside the crawler running platform.

[0033] Specifically, the third transmission gear train includes a first bevel gear 19, a second bevel gear 20, a second shaft 21, a ninth gear 22 and a tenth gear 23. The planet carrier 17 is connected to the first bevel gear 19. The first bevel gear 19 and the second bevel gear 20 are meshed. The second shaft 21 is fixedly connected with the second bevel gear 20 and the ninth gear 22. The tenth gear 23 is arranged on the half shaft 24 and is meshed with the ninth gear 22. When the planet carrier 17 outputs kinetic energy, the third transmission gear train further decelerates the speed output to the half shaft 24, thereby increasing the torque output by the half shaft 24 to meet the torque requirements during the running of the crawler running platform.

[0034] Among them, the crawler travel platform transmission gear set further includes an execution gear train. One end of the first output shaft 2 is provided with a first power source, and the other end of the first output shaft 2 is provided with an execution gear train. The first power source is used to provide the driving kinetic energy of the crawler travel platform while transmitting the kinetic energy to the execution gear train for agricultural, industrial or military work, saving the installation space of the power source in the crawler travel platform while reasonably utilizing the first power source to maximize the application of energy.

[0035] Specifically, a brake 25 is also provided between the execution gear train and the first power source. The brake 25 includes a brake pad and a brake housing for clamping the rotation of the brake pad. The brake housing is fixedly connected to the first output shaft 2, and the brake pad is fixedly connected to the execution gear train. By providing the brake 25 on the first output shaft 2, the brake 25 can control whether the kinetic energy on the first output shaft 2 can be transmitted to the execution gear train and drive the execution gear train to rotate. By setting the brake 25, the transmission state of the execution gear train can be controlled, with a simple structure and convenient installation and assembly.

[0036] In detail, the execution gear train includes a first execution gear 26, a second execution gear 28, a third execution gear 29, a fourth execution gear 30, a fifth execution gear 31, a sixth execution gear 32, a seventh execution gear 33, a transmission conversion shaft 27 and an execution output shaft 34. The first execution gear 26 is fixedly connected to the brake pad and slidably arranged on the first transmission shaft 13 together. The second execution gear is fixedly connected to the transmission conversion shaft 27 and meshes with the first execution gear 26. The third execution gear 29 and the fourth execution gear 30 are fixedly connected and slidably arranged on the transmission conversion shaft 27 together. The fifth execution gear 31 and the sixth execution gear 32 are fixedly connected and slidably arranged on the first transmission shaft 13 together. Among them, when the third execution gear and the fourth execution gear 30 move axially along the transmission conversion shaft 27 under the action of a fork, the third execution gear can mesh with the sixth execution gear 32. When meshing, the third execution gear and the transmission conversion shaft 27 can be connected by internal and external splines and transmit power; the fourth execution gear 30 can mesh with the fifth execution gear 31. When meshing, the fourth execution gear 30 and the transmission conversion shaft 27 can be connected by internal and external splines and transmit power. Through the above meshing process, two output speeds with different speed ratios can be obtained. The seventh execution gear 33 meshing with the sixth execution gear 32 is fixedly arranged on the execution output shaft 34, and the execution output shaft 34 is used to output the target output speed required by the crawler travel platform.

[0037] The present utility model provides a crawler travel platform transmission, including the above-mentioned crawler travel platform transmission gear set.

[0038] The present utility model also provides a crawler travel platform, including the above-mentioned crawler travel platform transmission gear set.

[0039] In summary, by setting the planetary gear 14 and the corresponding first transmission system, second transmission system and third transmission system, during the process of the first power source driving the first transmission system to transmit power, the speed of the half shaft 24 can be changed by the second power source. Therefore, during the running process of the crawler running platform, the speed of the corresponding half shaft 24 can be adjusted respectively by the second power source to achieve precise stepless speed regulation of the crawler running platform. At the same time, the transmission efficiency of the transmission gear set of the crawler running platform is high, which has good industrial popularization value.

[0040] The above embodiments are only used to illustrate the principles and effects of the present invention by way of example, and are not intended to limit the present invention. Any person familiar with this technology can modify or change the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or changes completed by those with ordinary knowledge in the technical field without departing from the spirit and technical ideas disclosed by the present invention should still be covered by the claims of the present invention.

Claims

1. A crawler travel platform transmission gear set, characterized in that: include: The first power source; A planetary gear train, including a sun gear, planetary gears, a ring gear and a planet carrier; A first transmission gear train having a first power input end and a first power output end, wherein the first power input end is connected to the first power source, and the first power output end is connected to the ring gear; Second power source; A second transmission gear train having a second power input end and a second power output end, wherein the second power input end is connected to the second power source, and the second power output end is connected to the sun gear; A third transmission gear train having a third power input end and a third power output end, wherein the third power input end is connected to the planet carrier, and the third power output end is connected to the half shaft; Among them, the number of planetary gear trains is 2, the second transmission gear train and the third transmission gear train are respectively arranged corresponding to the planetary gear trains, and the two planetary gear trains are connected to the first power source through the first transmission gear train.

2. The crawler travel platform transmission gear set according to claim 1, characterized in that: The first transmission gear train includes a first output shaft, a first gear, a first shaft, a second gear, a third gear, a fourth gear and a fifth gear. The first gear is fixedly connected to the first output shaft, the second gear and the third gear are slidably connected to the first output shaft, and the second gear is fixedly connected to the third gear and rotates together. The first power source is used to drive the first output shaft to rotate, the fourth gear and the fifth gear are fixedly connected to the first shaft, the first gear and the fourth gear are meshed and drive the first shaft to rotate, the fifth gear is meshed with the second gear, and the two third gears are respectively meshed with corresponding gear rings.

3. The crawler travel platform transmission gear set according to claim 1, characterized in that: Both of the second transmission gear trains include a sixth gear, a seventh gear and an eighth gear, and the second power sources have a second output shaft. The sixth gear is arranged on the second output shaft, and the seventh gear is arranged between the sixth gear and the eighth gear and meshes with the sixth gear and the eighth gear respectively. The eighth gear and the sun gear are connected by a first transmission shaft and rotate together.

4. The crawler travel platform transmission gear set according to claim 1, characterized in that: The third transmission gear train includes a first bevel gear, a second bevel gear, a second shaft, a ninth gear and a tenth gear. The planet carrier is connected to the first bevel gear, the first bevel gear is meshed with the second bevel gear, the second shaft is fixedly connected with the second bevel gear and the ninth gear, the tenth gear is arranged on a half shaft and meshed with the ninth gear.

5. The crawler travel platform transmission gear set according to claim 2, characterized in that: The gear set of the crawler travel platform transmission also includes an execution gear train. The first power source is arranged at one end of the first output shaft, and the execution gear train is arranged at the other end of the first output shaft.

6. The crawler travel platform transmission gear set according to claim 5, characterized in that: A brake is also arranged between the execution gear train and the first power source. The brake comprises a brake pad and a brake housing for clamping the rotation of the brake pad. The brake housing is fixedly connected to the first output shaft, and the brake pad is fixedly connected to the execution gear train.

7. The crawler travel platform transmission gear set according to claim 1, characterized in that: The first power source is an engine.

8. The crawler travel platform transmission gear set according to claim 1, characterized in that: The second power source is a motor.

9. A crawler travel platform transmission, characterized in that: It comprises a crawler travel platform transmission gear set as described in any one of claims 1-8.

10. A crawler travel platform, characterized in that: Includes the crawler travel platform transmission gear set as described in claim 9.

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