Wheel edge transmission mechanism of wheel excavator

Abstract

The utility model provides a wheel edge transmission mechanism of a wheel excavator. The wheel edge transmission mechanism comprises a driving transmission assembly, a front axle transmission assembly and a rear axle transmission assembly which are installed on a lower vehicle frame of the wheel excavator. By means of the structure, the transmission box, the first power transmission shaft, the second power transmission shaft, the first axle transmission shaft and the second axle transmission shaft which drive the transmission assembly are matched, and transmission connection and mechanical connection of the first power transmission shaft and the second power transmission shaft are achieved. The power of the driving motor can be transmitted into the transmission case, and the transmission case distributes the power to the first axle transmission shaft and the second axle transmission shaft, so that the front axle transmission assembly and the rear axle transmission assembly can be driven to ensure the transmission efficiency of the power, and universal joints are arranged at the input end and the output end of the transmission case. And when the direction of the connecting end of the transmission box and the first power transmission shaft and the connecting end of the transmission box and the first axle transmission shaft is changed, the universal joint can adapt.

Description

Technical Field

[0001] This utility model relates to the technical field of excavator transmission mechanisms, and in particular to a wheel-side transmission mechanism for a wheeled excavator. Background Technology

[0002] The wheel-side drive mechanism of an excavator generally includes a drive transmission section, an axle transmission section, and a wheel-side drive section. The drive transmission section transmits driving power to the axle transmission section, which in turn transmits power from the drive transmission section to the wheel-side drive section. The wheel-side drive section provides power to the tires, enabling the wheeled excavator to move. However, due to the limitations of the mechanical transmission layout of traditional drive transmission sections, some power is easily lost when transmitting power to the axle transmission section, resulting in reduced transmission efficiency and affecting load capacity. Utility Model Content

[0003] This utility model discloses a wheel-side transmission mechanism for a wheeled excavator, which mainly solves the problem of the limitation of the mechanical transmission layout of the traditional drive transmission part, which affects the power transmission and load capacity.

[0004] To achieve the aforementioned objective, the technical solution of this utility model is implemented as follows:

[0005] This utility model provides a wheel-side transmission mechanism for a wheeled excavator, including a drive transmission assembly, a front axle transmission assembly, and a rear axle transmission assembly mounted on the underframe of the wheeled excavator.

[0006] The drive transmission assembly includes a transmission box, which has an input end and an output end that is respectively connected to the front axle transmission assembly and the rear axle transmission assembly. A first power drive shaft and a second power drive shaft are located at the input end of the transmission box. One end of the first power drive shaft is connected to the input end of the transmission box via a universal joint, and the other end is connected to the second power drive shaft via a spline. The other end of the second power drive shaft is connected to a drive motor. A first axle drive shaft and a second axle drive shaft are located at the output end of the transmission box. One end of the first axle drive shaft is connected to the input end of the transmission box via a universal joint, and the other end is connected to the second axle drive shaft via a spline. The other end of the second axle drive shaft is connected to either the front axle transmission assembly or the rear axle transmission assembly via a universal joint. Connecting plates are symmetrically mounted on the transmission box. One end of each connecting plate has an upwardly protruding convex plate on its upper surface, which is mounted on the underframe of the wheeled excavator.

[0007] In one embodiment, the front axle drive assembly includes a front axle frame mounted on the underframe of a wheeled excavator, a front differential mounted in the front axle frame, and front wheel hubs rotatably connected to both ends of the front axle frame. The second drive shaft of the axle is driven to the input end of the front differential via a universal joint, and the output end of the front differential is driven to the front wheel hub.

[0008] In one embodiment, the rear axle drive assembly includes a rear axle frame mounted on the underframe of a wheeled excavator, a rear differential mounted in the rear axle frame, and rear wheel sides respectively connected to both ends of the rear axle frame. The second drive shaft of the axle is driven to the input end of the rear differential via a universal joint, and the output end of the rear differential is driven to the rear wheel sides.

[0009] In one embodiment, a front connecting plate is provided on the front axle frame, and the front axle frame is mounted on the underframe of the wheeled excavator via the front connecting plate.

[0010] In one embodiment, a rear connecting plate is provided on the rear axle frame, and the rear axle frame is mounted on the underframe of the wheeled excavator via the rear connecting plate.

[0011] In one embodiment, the front differential of the front axle drive assembly or the rear differential of the rear axle drive assembly both employ differential components. Each differential component includes a differential transmission element. An input shaft is provided on one side of the differential transmission element. Output shafts, which are connected to the differential transmission element, are respectively provided at both ends of the differential transmission element corresponding to the front or rear wheel side. The other end of the output shaft is connected to the front or rear wheel side. The differential transmission element includes a bevel gear, a left half-shaft gear, multiple planetary half-shaft gears, and a right half-shaft gear. The bevel gear and the left half-shaft gear are concentrically arranged. The left half-shaft gear meshes with one side of the planetary half-shaft gears, and the other side of the planetary half-shaft gear meshes with the right half-shaft gear. The right half-shaft gear is mounted on the output shaft. An input gear is provided on the input shaft, and the input gear meshes with the bevel gear.

[0012] In one embodiment, the front wheel edge of the front axle drive assembly or the rear wheel edge of the rear axle drive assembly both adopt wheel edge assemblies. The wheel edge assembly includes a cover, a planetary carrier, a sun gear, multiple planetary gears, an internal gear ring carrier, and a wheel edge drive shaft. The cover is rotatably connected to the front axle frame or the rear axle frame. The planetary carrier is disposed on the cover. The multiple planetary gears are rotatably connected between the cover and the planetary carrier. The internal gear ring carrier is mounted on the front axle frame or the rear axle frame. The multiple planetary gears mesh with the sun gear and the internal gear ring carrier, respectively. The internal gear ring carrier is provided with a cavity for accommodating the planetary carrier. One end of the wheel edge drive shaft is connected to the output shaft, and the other end is connected to the sun gear.

[0013] The advantages or beneficial effects of the above technical solution include at least the following: Through the cooperation of the transmission box, the first power transmission shaft, the second power transmission shaft, the first axle transmission shaft, and the second axle transmission shaft of the drive transmission assembly, the power of the drive motor can be transmitted to the transmission box via the transmission connection and mechanical connection between the first power transmission shaft and the second power transmission shaft. The transmission box then distributes the power to the first axle transmission shaft and the second axle transmission shaft, thereby driving the front axle transmission assembly and the rear axle transmission assembly, ensuring efficient power transmission. Universal joints are configured at both the input and output ends of the transmission box, ensuring that the transmission box can adapt to changes in direction when the connection between the transmission box and the first power transmission shaft and the first axle transmission shaft changes. Furthermore, the connection plate and the convex plate ensure stable installation of the transmission box on the underframe of the wheeled excavator. The convex plate provides a gap between the transmission box and the underframe of the wheeled excavator, thus protecting the transmission box. Attached Figure Description

[0014] The accompanying drawings illustrate exemplary embodiments of the present invention and, together with the description thereof, serve to explain the principles of the present invention. These drawings are included to provide a further understanding of the present invention and are incorporated in and constitute a part of this specification.

[0015] Figure 1 A schematic diagram of a wheel-side drive mechanism for a wheeled excavator according to an exemplary embodiment of the present invention is shown;

[0016] Figure 2 A schematic diagram of a drive transmission assembly according to an exemplary embodiment of the present invention is shown;

[0017] Figure 3 A schematic diagram of a connecting plate according to an exemplary embodiment of the present invention is shown;

[0018] Figure 4 A schematic diagram of a front axle drive assembly according to an exemplary embodiment of the present invention is shown;

[0019] Figure 5 A schematic diagram of a rear axle drive assembly according to an exemplary embodiment of the present invention is shown;

[0020] Figure 6 A schematic diagram of a differential assembly according to an exemplary embodiment of the present invention is shown;

[0021] Figure 7 A schematic diagram of a wheel-side assembly according to an exemplary embodiment of the present invention is shown.

[0022] Explanation of reference numerals in the attached figures:

[0023] 1. Drive transmission components;

[0024] 11. Transmission box; 12. Input end; 13. Output end; 14. First power drive shaft; 15. Second power drive shaft; 16. First axle drive shaft; 17. Second axle drive shaft; 18. Connecting plate; 181. Protruding plate;

[0025] 2. Front axle drive assembly;

[0026] 21. Front axle frame; 211. Front connecting plate; 22. Front differential; 23. Front wheel hub;

[0027] 3. Rear axle drive assembly;

[0028] 31. Rear axle frame; 311. Rear connecting plate; 32. Rear differential; 33. Rear wheel hub;

[0029] 4. Differential components;

[0030] 41. Differential transmission components; 411. Bevel gear; 412. Left half-shaft gear; 413. Planetary half-shaft gear; 414. Right half-shaft gear; 42. Input shaft; 421. Input gear; 43. Output shaft;

[0031] 5. Wheel rim assembly;

[0032] 51. Cover; 52. Planetary carrier; 53. Sun gear; 54. Planetary gear; 55. Internal gear ring carrier; 551. Cavity; 56. Wheel-side drive shaft. Detailed Implementation

[0033] Embodiments of the present invention will now be described in more detail with reference to the accompanying drawings. While some embodiments of the present invention are shown in the drawings, it should be understood that the present invention can be implemented in various forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of the present invention. It should be understood that the accompanying drawings and embodiments of the present invention are for illustrative purposes only and are not intended to limit the scope of protection of the present invention.

[0034] It should be noted that, where there is no conflict, the embodiments and features described in these embodiments can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0035] The term "comprising" and its variations as used herein are open-ended, meaning "including but not limited to". The term "based on" means "at least partially based on". The term "one embodiment" means "at least one embodiment"; the term "another embodiment" means "at least one additional embodiment"; the term "some embodiments" means "at least some embodiments". Definitions of other terms will be given in the following description. It should be noted that the concepts of "first", "second", etc., mentioned in this utility model are only used to distinguish different devices, modules, or units, and are not used to limit the order of functions performed by these devices, modules, or units or their interdependencies.

[0036] It should be noted that the terms "a" and "a plurality of" used in this utility model are illustrative rather than restrictive. Those skilled in the art should understand that, unless otherwise expressly indicated in the context, they should be understood as "one or more".

[0037] The names of the messages or information exchanged between the multiple devices in this embodiment of the invention are for illustrative purposes only and are not intended to limit the scope of these messages or information.

[0038] See Figures 1 to 3 The present invention provides a wheel-side transmission mechanism for a wheeled excavator, including a drive transmission assembly 1, a front axle transmission assembly 2, and a rear axle transmission assembly 3 mounted on the underframe of the wheeled excavator.

[0039] The drive transmission assembly 1 includes a transmission housing 11. The transmission housing 11 has an input end 12 and an output end 13 that are respectively connected to the front axle transmission assembly 2 and the rear axle transmission assembly 3. A first power drive shaft 14 and a second power drive shaft 15 are located on the transmission housing 11 corresponding to the input end 12. One end of the first power drive shaft 14 is connected to the input end 12 of the transmission housing 11 via a universal joint, and the other end is connected to the second power drive shaft 15 via a spline. The other end of the second power drive shaft 15 is connected to a drive motor. The transmission housing 11 is connected to the output end 13. The axle first drive shaft 16 and the axle second drive shaft 17 are provided at the end 13. One end of the axle first drive shaft 16 is connected to the input end 12 of the transmission box 11 through a universal joint, and the other end is connected to the axle second drive shaft 17 through a spline. The other end of the axle second drive shaft 17 is connected to the front axle transmission assembly 2 or the rear axle transmission assembly 3 through a universal joint. The transmission box 11 is symmetrically equipped with connecting plates 18. One end of the upper surface of the connecting plate 18 is provided with an upwardly protruding convex plate 181, which is installed on the underframe of the wheeled excavator.

[0040] With the above structure, through the cooperation of the transmission box 11, the first power transmission shaft 14, the second power transmission shaft 15, the first axle transmission shaft 16, and the second axle transmission shaft 17 of the drive transmission assembly 1, the power of the drive motor can be transmitted to the transmission box 11 through the transmission connection and mechanical connection between the first power transmission shaft 14 and the second power transmission shaft 15. The transmission box 11 then distributes the power to the first axle transmission shaft 16 and the second axle transmission shaft 17, thereby driving the front axle transmission assembly 2 and the rear axle transmission assembly 3. To ensure power transmission efficiency, universal joints are provided at both the input end 12 and the output end 13 of the transmission box 11. This ensures that the transmission box 11 can adapt to changes in direction when the connection ends with the first power drive shaft 14 and the first axle drive shaft 16 change direction. With the connection plate 18 and the protruding plate 181, the transmission box 11 can be stably installed on the underframe of the wheeled excavator. The protruding plate 181 provides a gap between the transmission box 11 and the underframe of the wheeled excavator, thus protecting the transmission box 11.

[0041] In one embodiment, see Figure 1 and Figure 4 The front axle drive assembly 2 includes a front axle frame 21 mounted on the underframe of the wheeled excavator, a front differential 22 mounted in the front axle frame 21, and front wheel hubs 23 rotatably connected to both ends of the front axle frame 21. The second drive shaft 17 of the axle is connected to the input end of the front differential 22 via a universal joint, and the output end of the front differential 22 is connected to the front wheel hubs 23. In practical applications, the front differential 22 is used to connect the second drive shaft 17 of the axle and transmit its power to the front wheel hubs 23. With the second drive shaft 17 of the axle connected to the input end of the front differential 22 via a universal joint, power transmission can be ensured even when there is relative displacement between the front axle drive assembly 2 and the drive transmission assembly 1.

[0042] A front connecting plate 211 is provided on the front axle frame 21, and the front axle frame 21 is mounted on the underframe of the wheeled excavator via the front connecting plate 211. In practical applications, the front connecting plate 211 is used to mount the front axle frame 21 onto the underframe of the wheeled excavator to facilitate the installation of the front axle frame 21.

[0043] In one embodiment, see Figure 1 and Figure 5The rear axle transmission assembly 3 includes a rear axle frame 31 mounted on the underframe of the wheeled excavator, a rear differential 32 mounted in the rear axle frame 31, and rear wheel hubs 33 connected to both ends of the rear axle frame 31. The second drive shaft 17 of the axle is connected to the input end of the rear differential 32 via a universal joint, and the output end of the rear differential 32 is connected to the rear wheel hubs 33. In practical applications, the rear differential 32 is used to connect the second drive shaft 17 of the axle and transmit its power to the rear wheel hubs 33. With the second drive shaft 17 of the axle connected to the input end of the rear differential 32 via a universal joint, power transmission can be ensured even when there is relative displacement between the rear axle transmission assembly 3 and the drive transmission assembly 1.

[0044] A rear connecting plate 311 is provided on the rear axle frame 31, and the rear axle frame 31 is mounted on the underframe of the wheeled excavator via the rear connecting plate 311. In practical applications, the rear connecting plate 311 is used to mount the rear axle frame 31 onto the underframe of the wheeled excavator to facilitate the installation of the rear axle frame 31.

[0045] In one embodiment, see Figures 4 to 6 The front differential 22 of the front axle drive assembly 2 or the rear differential 32 of the rear axle drive assembly 3 both adopt a differential assembly 4. The differential assembly 4 includes a differential transmission component 41. An input shaft 42 is provided on one side of the differential transmission component 41. Output shafts 43, which are connected to the differential transmission component 41, are respectively provided at both ends of the differential transmission component 41 corresponding to the front wheel side 23 or the rear wheel side 33. The other end of the output shaft 43 is connected to the front wheel side 23 or the rear wheel side 33. The differential transmission component 41 includes a bevel gear. 411, left half-shaft gear 412, multiple planetary half-shaft gears 413, right half-shaft gear 414, bevel gear 411 and left half-shaft gear 412 are concentrically arranged. Left half-shaft gear 412 meshes with one side of planetary half-shaft gear 413, and the other side of planetary half-shaft gear 413 meshes with right half-shaft gear 414. Right half-shaft gear 414 is mounted on output shaft 43. Input gear 421 is provided on input shaft 42, and input gear 421 meshes with bevel gear 411. In practical application, through the cooperation of differential transmission component 41, input shaft 42 and output shaft 43, the excavator's power can be transmitted to input shaft 42 through the second transmission shaft 17 of the axle of drive transmission component 1, and then transmitted to output shaft 43 through differential transmission component 41, thereby driving the rotation of front wheel side 23 or rear wheel side 33.

[0046] In one embodiment, see Figure 4 , Figure 5 and Figure 7The front wheel rim 23 of the front axle drive assembly 2 or the rear wheel rim 33 of the rear axle drive assembly 3 both adopt wheel rim assembly 5. The wheel rim assembly 5 includes a cover 51, a planetary carrier 52, a sun gear 53, multiple planetary gears 54, an internal gear ring carrier 55, and a wheel rim drive shaft 56. The cover 51 is rotatably connected to the front axle frame 21 or the rear axle frame 31. The planetary carrier 52 is disposed on the cover 51. Multiple planetary gears 54 are rotatably connected between the cover 51 and the planetary carrier 52. The internal gear ring carrier 55 is installed on the front axle frame 21 or the rear axle frame 31. Multiple planetary gears 54 mesh with the sun gear 53 and the internal gear ring carrier 55 respectively. The internal gear ring carrier 55 is provided with a cavity 551 for accommodating the planetary carrier 52. One end of the wheel rim drive shaft 56 is connected to the output shaft 43, and the other end is connected to the sun gear 53. In practical applications, through the cooperation of the sun gear 53, multiple planetary gears 54 and internal gear ring 55, the power of the output shaft 43 can be transmitted to the wheel-side drive shaft 56, which drives the rotation of the sun gear 53, thereby enabling the cover 51 to rotate, which in turn drives the rotation of the wheel hub and tire.

[0047] In the description of this utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0048] Those skilled in the art should understand that the above embodiments are merely for clearly illustrating the present invention and are not intended to limit the scope of the present invention. For those skilled in the art, other changes or modifications can be made based on the above-described invention, and these changes or modifications still fall within the scope of the present invention.

Claims

1. A wheel-side transmission mechanism for a wheeled excavator, characterized in that, This includes the drive transmission assembly, front axle drive assembly, and rear axle drive assembly mounted on the underframe of a wheeled excavator. The drive transmission assembly includes a transmission box, which has an input end and an output end that is respectively connected to the front axle transmission assembly and the rear axle transmission assembly. A first power drive shaft and a second power drive shaft are located at the input end of the transmission box. One end of the first power drive shaft is connected to the input end of the transmission box via a universal joint, and the other end is connected to the second power drive shaft via a spline. The other end of the second power drive shaft is connected to a drive motor. A first axle drive shaft and a second axle drive shaft are located at the output end of the transmission box. One end of the first axle drive shaft is connected to the input end of the transmission box via a universal joint, and the other end is connected to the second axle drive shaft via a spline. The other end of the second axle drive shaft is connected to either the front axle transmission assembly or the rear axle transmission assembly via a universal joint. Connecting plates are symmetrically mounted on the transmission box. One end of each connecting plate has an upwardly protruding convex plate on its upper surface, which is mounted on the underframe of the wheeled excavator.

2. The wheel-side transmission mechanism of the wheeled excavator as described in claim 1, characterized in that, The front axle drive assembly includes a front axle frame mounted on the underframe of a wheeled excavator, a front differential mounted in the front axle frame, and front wheel sides rotatably connected to both ends of the front axle frame. The second drive shaft of the axle is connected to the input end of the front differential via a universal joint, and the output end of the front differential is connected to the front wheel sides.

3. The wheel-side transmission mechanism of the wheeled excavator as described in claim 2, characterized in that, The rear axle drive assembly includes a rear axle frame mounted on the underframe of the wheeled excavator, a rear differential mounted in the rear axle frame, and rear wheel sides respectively connected to both ends of the rear axle frame. The second drive shaft of the axle is connected to the input end of the rear differential via a universal joint, and the output end of the rear differential is connected to the rear wheel side.

4. The wheel-side transmission mechanism of the wheeled excavator as described in claim 2, characterized in that, The front axle is equipped with a front connecting plate, and the front axle is mounted on the underframe of the wheeled excavator via the front connecting plate.

5. The wheel-side transmission mechanism of the wheeled excavator as described in claim 3, characterized in that, The rear axle frame is equipped with a rear connecting plate, and the rear axle frame is mounted on the underframe of the wheeled excavator via the rear connecting plate.

6. The wheel-side transmission mechanism of the wheeled excavator as described in claim 3, characterized in that, The front differential of the front axle drive assembly or the rear differential of the rear axle drive assembly both employ differential components. Each differential component includes a differential transmission element. An input shaft is provided on one side of the differential transmission element. Output shafts, connected to the differential transmission element, are respectively provided at both ends corresponding to the front or rear wheel sides. The other end of the output shaft is connected to the front or rear wheel side. The differential transmission element includes a bevel gear, a left half-shaft gear, multiple planetary half-shaft gears, and a right half-shaft gear. The bevel gear and the left half-shaft gear are concentrically arranged. The left half-shaft gear meshes with one side of the planetary half-shaft gears, and the other side of the planetary half-shaft gear meshes with the right half-shaft gear. The right half-shaft gear is mounted on the output shaft. An input gear is provided on the input shaft, and the input gear meshes with the bevel gear.

7. The wheel-side transmission mechanism of the wheeled excavator as described in claim 6, characterized in that, The front wheel edge of the front axle drive assembly or the rear wheel edge of the rear axle drive assembly both adopt wheel edge assemblies. The wheel edge assembly includes a cover, a planetary carrier, a sun gear, multiple planetary gears, an internal gear ring carrier, and a wheel edge drive shaft. The cover is rotatably connected to the front axle frame or the rear axle frame. The planetary carrier is disposed on the cover. The multiple planetary gears are rotatably connected between the cover and the planetary carrier. The internal gear ring carrier is mounted on the front axle frame or the rear axle frame. The multiple planetary gears mesh with the sun gear and the internal gear ring carrier, respectively. The internal gear ring carrier is provided with a cavity for accommodating the planetary carrier. One end of the wheel edge drive shaft is connected to the output shaft, and the other end is connected to the sun gear.

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