Crawler running platform and gearbox and transmission thereof

Abstract

The utility model provides a crawler belt running platform and a gearbox and a transmission thereof, and belongs to the technical field of transmission accessories, the crawler belt running platform comprises a driving connecting cover and a gearbox body, the gearbox body comprises two side plates, a first mounting plate and a second mounting plate, the first mounting plate is strip-shaped, and the second mounting plate is strip-shaped. Motor mounting positions for mounting motors are arranged at two ends of the first mounting plate, the two side plates are arranged between the two motor mounting positions, the first mounting plate and the second mounting plate are oppositely arranged, and a rectangular frame is defined by the first mounting plate, the second mounting plate and the two side plates; the driving connecting cover is connected with the side, away from the rectangular frame, of the first mounting plate to form an inner cavity, the driving connecting cover is provided with a mounting part connected with an engine, and the mounting part and the first mounting plate are arranged at an interval. The gearbox is simple in structure, reasonable in layout and high in space utilization rate and has good industrial popularization value.

Description

Technical Field

[0001] The utility model belongs to the technical field of transmission accessories, in particular to a crawler travel platform and a transmission case and a transmission. Background Art

[0002] The crawler platform is a special traveling platform that uses crawlers as the traveling mechanism. The crawlers on it replace the wheels on the traditional traveling platform, which reduces the unit pressure and sinking degree of the crawler platform on the ground. At the same time, because the crawler platform is equipped with a powerful engine, it has good ground adhesion and greater traction. At the same time, because the crawler platform has a low center of gravity, it has superior off-road performance, can travel on uneven ground, and has good wading performance, so it is widely used in agriculture, construction, industry, military and other fields.

[0003] Since the crawler platform itself has a heavy weight, the space occupied by its speed change part is large, and since the torque required for its own driving is large, the speed change part bears a large force. At present, the space design of the speed change part of the crawler platform is unreasonable, resulting in the speed change part occupying too much space, which is not conducive to the optimization of the utilization rate of the internal space of the crawler platform. At the same time, due to the unreasonable design of the support structure of the speed change part of the crawler platform, the support structure of the speed change part is easy to be damaged during the operation of the crawler platform, which increases the cost of repair and maintenance of the crawler platform. Utility Model Content

[0004] In view of the above-mentioned shortcomings of the prior art, the purpose of the present invention is to provide a crawler travel platform and its gearbox and transmission, which are used to solve the problems of low space utilization of the speed changing part of the crawler travel platform in the prior art and easy damage of the supporting structure of the speed changing part.

[0005] In order to achieve the above-mentioned purpose and other related purposes, the utility model provides a gearbox for a crawler travel platform, comprising:

[0006] The gearbox body comprises two side plates and a first mounting plate and a second mounting plate, wherein the first mounting plate is in an elongated strip shape, and both ends of the first mounting plate have motor mounting positions for mounting the motor, and the two side plates are arranged between the two motor mounting positions, and the first mounting plate is arranged opposite to the second mounting plate and encloses the two side plates to form a rectangular frame;

[0007] The drive connection cover is connected to the first mounting plate away from the rectangular frame to form an inner cavity. The drive connection cover has a mounting portion connected to the engine. The mounting portion is spaced apart from the first mounting plate. The first direction is the thickness direction of the first mounting plate.

[0008] Optionally, along the first direction, a partition is provided between the first mounting plate and the second mounting plate, and the partition is spaced from both the first mounting plate and the second mounting plate.

[0009] Optionally, the number of partitions is 2. Along the first direction, the partitions divide the rectangular frame to form a first region, a second region, and a third region in sequence. The first region is adjacent to the first mounting plate, and the third region is adjacent to the second mounting plate.

[0010] Optionally, a dividing plate is provided in the second region and arranged along the first direction.

[0011] Optionally, the partition close to the second mounting plate is a bent partition, and the part of the bent partition close to the side plate has a Z-shaped bend.

[0012] Optionally, reinforcing ribs are provided at the position of the driving connection cover corresponding to the inner cavity.

[0013] The present utility model provides a transmission for a crawler traveling platform, including an engine, a motor, a transmission gear set, and the gearbox as described above. The transmission gear set is arranged in the gearbox. One of the motors is respectively provided at the motor mounting position of the gearbox. The engine is arranged at the mounting part of the gearbox, and both the engine and the motor are respectively connected to the transmission gear set.

[0014] Optionally, the transmission gear set includes a first transmission train, a planetary gear train, a second transmission train, and a third transmission train. The first transmission train has a first power input end and a first power output end. The first power input end is connected to the engine, and the first power output end is connected to the ring gear of the planetary gear train. The second transmission train has a second power input end and a second power output end. The second power input end is connected to the motor, and the second power output end is connected to the sun gear in the planetary gear train. The third transmission train has a third power input end and a third power output end. The third power input end is connected to the planet carrier of the planetary gear train, and the third power output end is connected to the half shaft. Among them, the planetary gear train is arranged in the first region of the gearbox, the third transmission train is arranged in the second region of the gearbox, and the second transmission train is arranged in the inner cavity of the gearbox.

[0015] Optionally, the transmission gear set further includes an execution gear train, which is connected to the engine and arranged in the third region of the gearbox.

[0016] The present utility model provides a crawler traveling platform, including the transmission as described above.

[0017] As described above, a crawler driving platform, a gearbox and a transmission of the present utility model have the following beneficial effects:

[0018] By reasonably setting the connection positions with the engine and the motor on the gearbox body, the space inside the gearbox can be reasonably allocated and utilized, effectively improving the space utilization rate and the practicability of the gearbox; by setting a driving connection cover and forming an inner cavity with the first mounting plate, it is convenient to guide the power of the motors at both ends of the first mounting plate to the required positions, and the driving connection cover and the first mounting plate are convenient to disassemble. The gearbox has a simple structure, a reasonable layout, a high space utilization rate, and has good industrial promotion value. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It shows a schematic structural view of the transmission of the crawler vehicle according to an embodiment of the present utility model;

[0020] Figure 2 It shows a schematic structural view of the gearbox according to an embodiment of the present utility model;

[0021] Figure 3 It shows a schematic structural view of the driving connection cover according to an embodiment of the present utility model;

[0022] Figure 4 It shows a schematic structural view of the gearbox body according to an embodiment of the present utility model;

[0023] Figure 5 It shows a schematic transmission structure view of the gearbox according to an embodiment of the present utility model.

[0024] Reference numeral description: 1. Engine; 2. First output shaft; 3. Eighth gear; 4. Seventh gear; 5. Sixth gear; 6. Second output shaft; 7. 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; 35. Driving connection cover; 36. Gearbox body; 37. First mounting plate; 38. Second mounting plate; 39. Planetary gear train; 40. Third transmission gear train; 41. Actuating gear train; 42. Fork; 43. First region; 44. Second region; 45. Third region; 46. Partition board; 47. Dividing board; 48. Mounting part; 49. Reinforcing rib; 50. Side plate; 51. Second transmission gear train. DETAILED DESCRIPTION

[0025] The following is a description of the implementation of the present invention by means of specific embodiments. People familiar with the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification.

[0026] See also Figures 1 to 5 It should be noted that the structures, proportions, sizes, etc. illustrated in the drawings in this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the limiting conditions for the implementation of the utility model, so they have no substantial technical significance. Any modification of the structure, change in the proportion relationship, or adjustment of the size should still fall within the scope of the technical content disclosed by the utility model without affecting the effects and purposes that can be achieved by the utility model. At the same time, the terms such as "upper", "lower", "left", "right", "middle" and "one" quoted in this specification are only for the convenience of description, and are not used to limit the scope of the implementation of the utility model. The change or adjustment of their relative relationship should also be regarded as the scope of the implementation of the utility model without substantially changing the technical content.

[0027] In order to describe the present invention in detail, a crawler travel platform and its gearbox and transmission of the present invention are specifically described below:

[0028] Please combine Figures 1 to 4 As shown, the utility model provides a gearbox for a crawler travel platform, including a drive connection cover 35 and a gearbox body 36. The gearbox body 36 includes two side plates 50 and a first mounting plate 37 and a second mounting plate 38. The first mounting plate 37 is in an elongated shape. Both ends of the first mounting plate 37 have motor mounting positions for mounting a motor. The two side plates 50 are arranged between the two motor mounting positions. The first mounting plate 37 and the second mounting plate 38 are arranged opposite to each other and enclosed with the two side plates 50 to form a rectangular frame; the drive connection cover 35 is connected to the first mounting plate 37 on a side away from the rectangular frame to form an inner cavity, and the drive connection cover 35 has a mounting portion 48 connected to the engine. The mounting portion 48 is spaced apart from the first mounting plate 37, and the first direction is the thickness direction of the first mounting plate 37. By reasonably setting the connection positions with the engine and the motor on the gearbox body 36, the space in the gearbox can be reasonably allocated and utilized, effectively improving the space utilization rate and the practicality of the gearbox; by setting the drive connection cover 35 and forming an inner cavity with the first mounting plate 37, it is convenient to guide the power of the motor located at both ends of the first mounting plate 37 to the desired position, and the drive connection cover 35 and the first mounting plate 37 are easy to disassemble.

[0029] Among them, along the first direction, a partition plate 46 is arranged between the first mounting plate 37 and the second mounting plate 38, and the partition plate 46 is spaced from both the first mounting plate 37 and the second mounting plate 38. By arranging the partition plate 46, the space within the rectangular frame can be more reasonably divided. At the same time, the stability of the transmission box during use can also be increased. In this embodiment, the number of partition plates 46 is 2. Along the first direction, the partition plate 46 divides the rectangular frame to sequentially form a first region 43, a second region 44, and a third region 45. The first region 43 is adjacent to the first mounting plate 37, and the third region 45 is adjacent to the second mounting plate 38. Dividing the rectangular frame into three regions is conducive to the rational utilization of the space within the gearbox.

[0030] Specifically, a dividing plate 47 arranged along the first direction is provided in the second region 44. While the dividing plate 47 further divides the space of the rectangular frame, it can also enhance the support of the gearbox for the components arranged inside it. In this embodiment, the cross-section of the gearbox is an axisymmetric figure, and the dividing plate 47 is located on the central axis of the gearbox. In this way, the centrality of the gearbox is good. After being installed on the crawler traveling platform, the smoothness during its traveling can be ensured, and the situation of the weight side shift of the crawler traveling platform caused by the eccentricity of the gearbox can be avoided. At the same time, the rational layout of the installation space of the crawler vehicle can be realized.

[0031] In detail, the partition plate 46 close to the second mounting plate 38 is a bent partition plate 46, and the part of the bent partition plate 46 close to the side plate 50 has a Z-shaped bend. Through the bending design, the space in the second region 44 and the third region 45 can be reasonably utilized for avoidance, improving the space utilization rate within the gearbox.

[0032] Among them, reinforcing ribs 49 are arranged at the position corresponding to the inner cavity of the driving connection cover 35, and the reinforcing ribs 49 are arranged in a criss-cross manner. By arranging the reinforcing ribs 49 on the inner surface of the driving connection cover 35, the overall strength of the driving connection cover 35 can be enhanced. At the same time, the structure of the reinforcing ribs 49 is simple, easy to produce and manufacture, and the production cost is low.

[0033] Among them, mounting holes for arranging mounting shafts are opened on the partition plate 46, the first mounting plate 37, and the second mounting plate 38, and protrusions are arranged around the circumference of the mounting holes. Since a mounting shaft needs to be arranged at the mounting hole for mounting a gear, the stress at the mounting hole will increase, and the support needs to be strengthened. By arranging protrusions around the circumference of the mounting hole, the thickness of the partition plate 46 or the first mounting plate 37 or the second mounting plate 38 around the mounting hole can be increased to enhance the support strength at the mounting hole. At the same time, the protrusion structure is simple, easy to produce and manufacture. In some embodiments, the first strengthening structure can be the reinforcing ribs 49 arranged around the mounting hole, and the type of the first strengthening structure can be adjusted according to actual use requirements.

[0034] Specifically, cover plates are provided at the openings of the rectangular frames, and the cover plates shield the corresponding openings. The overall appearance of the transmission body 36 is beautiful and regular, and the structure is simple. After the transmission gear set is installed in the transmission body 36, the cover plates can be used for sealing to prevent the external environment from affecting the operation and work of the transmission gear set.

[0035] Specifically, weight-reducing depressions are provided on the outer sides of the two side plates 50. By providing the weight-reducing depressions, the weight of the transmission can be reduced while meeting the support strength of the side plates 50, thereby achieving the lightweight of the crawler running platform. It should be noted that the cavity part of the transmission body 36 where the transmission gear set is installed is the inside, and the part outside the cavity part is the outside. The outer side surface of the side plate 50 is the side surface far from the cavity part.

[0036] Specifically, the first mounting plate 37 is strip-shaped, and the mounting portion 48 is provided at the midpoint of the first mounting plate 37 along the length direction and is arranged opposite to the first mounting plate 37 at a certain interval. Along the length direction of the first mounting plate 37, the mounting portion 48 is connected to the first mounting plate 37 through an inclined surface, and the distance between the inclined surface and the first mounting plate 37 is closer as it is farther away from the mounting portion 48. By providing the inclined surface, the space of the installation cavity can be increased while improving the force-bearing strength of the driving connection cover 35 in the vertical direction of the first mounting plate 37.

[0037] Among them, when the driving connection cover 35 is connected to the first mounting plate 37, the outer surface of the driving connection cover 35 is flush with the outer surface of the first mounting plate 37, which can make the overall appearance of the transmission beautiful and regular and reduce the excessive space occupied by the transmission.

[0038] Figures 1 to 5 As shown, the present invention provides a transmission for a crawler running platform, including an engine, a motor, a transmission gear set and the above transmission. The transmission gear set is arranged in the transmission, and a motor is respectively provided at the motor installation positions of the transmission. The engine is arranged on the mounting portion 48 of the transmission, and the engine and the motor are respectively connected to the transmission gear set.

[0039] It should be noted that Figure 1 and Figure 4 For the convenience of viewing, some gears and connecting shafts are omitted in Figure 5 .

[0040] Among them, the transmission gear set includes a first transmission train, a planetary gear train 39, a second transmission train 51, and a third transmission train 40. The first transmission train has a first power input end and a first power output end. The first power input end is connected to the engine, and the first power output end is connected to the ring gear of the planetary gear train 39. The second transmission train 51 has a second power input end and a second power output end. The second power input end is connected to the motor, and the second power output end is connected to the sun gear 15 in the planetary gear train. The third transmission train 40 has a third power input end and a third power output end. The third power input end is connected to the planet carrier 17 of the planetary gear train, and the third power output end is connected to the half shaft. Among them, the number of the planetary gear trains 39 is 2. The second transmission train 51 and the third transmission train 40 are respectively arranged corresponding to each planetary gear train 39. Both of the two planetary gear trains 39 are connected to the engine through the first transmission train. The planetary gear train 39 is arranged in the first area 43 of the gearbox. The third transmission train 40 is arranged in the second area 44 of the gearbox. The second transmission train 51 is arranged in the inner cavity of the gearbox.

[0041] Among them, the first transmission train includes a first shaft 9, 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 engine 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. The two third gears 18 are respectively meshed with the corresponding ring gears 16. By setting the first transmission train, the rotation speed of the power output to the motor can be adjusted, which is convenient for adjusting the gear speed. Moreover, the structure of the first transmission train is simple, and the installation and assembly are convenient.

[0042] Among them, both of the two second transmission trains 51 include a sixth gear 5, a seventh gear 4, and an eighth gear 3. The motor 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 motor and the first output shaft 2 can be increased to meet the layout space requirements inside the crawler running platform.

[0043] Specifically, the third transmission gear train 40 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 of the planetary gear train is connected to the first bevel gear 19. The first bevel gear 19 meshes with the second bevel gear 20. The second bevel gear 20 and the ninth gear 22 are fixedly connected to the second shaft 21. The tenth gear 23 is arranged on the half shaft 24 and meshes with the ninth gear 22. When the planet carrier 17 of the planetary gear train outputs kinetic energy, the speed output to the half shaft 24 is further reduced through the third transmission gear train 40, thereby increasing the torque output by the half shaft 24 to meet the torque requirements during the driving process of the crawler running platform.

[0044] Wherein, the transmission gear set further includes an execution gear train 41. The execution gear train 41 is connected to the engine. The execution gear train 41 is arranged in the third area 45 of the gearbox. One end of the first transmission shaft 13 is provided with the engine, and the other end of the first transmission shaft 13 is provided with the execution gear train 41. While the engine is used to provide the driving kinetic energy of the crawler running platform, it transmits the kinetic energy to the execution gear train 41 for agricultural, industrial or military work, saving the installation space of the power source in the crawler running platform and rationally utilizing the engine to maximize the application of energy.

[0045] Specifically, the execution gear train 41 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. Wherein, when the third execution gear and the fourth execution gear 30 move axially along the transmission conversion shaft 27 under the action of the shift fork 42, 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 through 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 through 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. The execution output shaft 34 is used to output the target output speed required by the crawler running platform.

[0046] The present utility model further provides a crawler running platform, including the transmission as described above.

[0047] In summary, by reasonably setting the connection positions with the engine 1 and the motor 7 on the transmission body, the space inside the transmission can be reasonably allocated and utilized, effectively improving the space utilization rate and enhancing the practicality of the transmission. By setting the drive connection cover and forming an inner cavity with the first mounting plate 37, it is convenient to guide the power of the motor 7 at both ends of the first mounting plate 37 to the required positions, and the drive connection cover and the first mounting plate are easy to disassemble. The transmission has a simple structure, reasonable layout, high space utilization rate, and has good industrial promotion value.

[0048] The above embodiments are only illustrative of the principles and effects of the present invention, 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 gearbox for a crawler travel platform, characterized in that: include: The gearbox body comprises two side plates and a first mounting plate and a second mounting plate, wherein the first mounting plate is in an elongated strip shape, and both ends of the first mounting plate have motor mounting positions for mounting the motor, and the two side plates are arranged between the two motor mounting positions, and the first mounting plate is arranged opposite to the second mounting plate and encloses the two side plates to form a rectangular frame; The drive connection cover is connected to the first mounting plate away from the rectangular frame to form an inner cavity. The drive connection cover has a mounting portion connected to the engine. The mounting portion is spaced apart from the first mounting plate. The first direction is the thickness direction of the first mounting plate.

2. The gearbox of the crawler travel platform according to claim 1, characterized in that: Along the first direction, a partition is arranged between the first mounting plate and the second mounting plate, and the partition is arranged at a distance from the first mounting plate and the second mounting plate.

3. The gearbox of the crawler travel platform according to claim 2, characterized in that: The number of the partitions is 2. Along the first direction, the partitions divide the rectangular frame into a first area, a second area and a third area in sequence. The first area is close to the first mounting plate, and the third area is close to the second mounting plate.

4. The gearbox of the crawler travel platform according to claim 3, characterized in that: A partition plate arranged along the first direction is arranged in the second area.

5. The gearbox of the crawler travel platform according to claim 3, characterized in that: The partition plate close to the second mounting plate is a bent partition plate, and the portion of the bent partition plate close to the side plate has a Z-shaped bend.

6. The gearbox of the crawler travel platform according to claim 1, characterized in that: The driving connection cover is provided with reinforcing ribs at a position corresponding to the inner cavity.

7. A transmission for a crawler platform, characterized in that: It includes an engine, a motor, a transmission gear set and a gearbox as described in any one of claims 3 to 6, wherein the transmission gear set is arranged in the gearbox, and one of the motors is respectively arranged on the motor mounting position of the gearbox, and the engine is arranged on the mounting part of the gearbox, and the engine and the motor are respectively connected to the transmission gear set.

8. The transmission of the crawler travel platform according to claim 7, characterized in that: The transmission gear set includes a first transmission gear train, a planetary gear train, a second transmission gear train, and a third transmission gear train. 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 engine, and the first power output end is connected to the ring gear of the planetary gear train. 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 motor, and the second power output end is connected to the sun gear in the planetary gear train. 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 of the planetary gear train, and the third power output end is connected to the half shaft, wherein the planetary gear train is arranged in the first area of ​​the gearbox, the third transmission gear train is arranged in the second area of ​​the gearbox, and the second transmission gear train is arranged in the inner cavity of the gearbox.

9. The transmission of the crawler travel platform according to claim 7, characterized in that: The transmission gear set further includes an actuator gear train connected to the engine and disposed in a third area of ​​the transmission.

10. A crawler travel platform, characterized in that: Comprising a transmission as described in any one of claims 7-9.

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