Excavator drive axle capable of being separated and combined

Abstract

The utility model provides an excavator drive axle capable of being separated and combined. The excavator drive axle comprises an axle shell, two ends of the axle shell are respectively connected with a steering knuckle in a rotating mode, a wheel side mechanism is arranged on the steering knuckle, a brake is arranged between the wheel side mechanism and the steering knuckle, and a differential mechanism and a clutch mechanism are arranged on the axle shell. By means of the structure, when a brake needs to be used for emergency braking, under the cooperation of the differential mechanism and the clutch mechanism, the clutch frame is driven by the double-head driving piece of the clutch mechanism, the clutch frame drives the clutch inner gear to move, the clutch inner gear can move to the second position from the first position, and therefore the brake can be used for emergency braking. Therefore, transmission connection between the output shaft and the transmission shaft can be disconnected, power at the position of the output shaft can be disconnected from the transmission shaft, the power of the output shaft is prevented from being transmitted to the rotating shaft, torsional force can be avoided, and the service life of the output shaft and the transmission shaft can be prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of excavator drive axles, in particular to a clutchable excavator drive axle. Background Art

[0002] The drive axle on the excavator generally consists of components such as the axle housing, differential, wheel-side reducer and brake. Among them, the wheel-side reducer is used to transfer the speed and torque transmitted by the main reducer to the wheels after reducing the speed and increasing the torque, so that the wheels can generate greater driving force under the reaction of the ground adhesion; the wheel-side reducer includes a wheel hub, which is installed at both ends of the axle housing; the differential is a mechanism that enables the wheel hubs at both ends of the axle housing to rotate at different speeds, so that the excavator can turn.

[0003] However, when the transmission mechanism in the traditional excavator drive axle is rotating while the driving wheel is rotating, when emergency braking is required in a complex working environment, the wheel can stop rotating in time after the brake is applied. However, since the drive shaft is directly connected to the drive end through the differential, its driving force will still be transmitted to the transmission mechanism, causing the drive shaft to stop rotating on one side at the moment while the other side still has rotational power, causing internal torsional force to be generated in the drive shaft. In frequent emergency braking environments, the service life of the drive shaft is easily reduced. Utility Model Content

[0004] The utility model discloses a clutchable excavator drive axle, which mainly solves the problem that in a conventional drive axle, when emergency braking is frequently required during driving, a transmission shaft is often subjected to torsion force, thereby reducing the service life.

[0005] To achieve the above purpose, the technical solution of the present invention is implemented as follows:

[0006] The utility model provides a clutchable excavator drive axle, comprising an axle housing, both ends of the axle housing are rotatably connected with steering knuckles, a wheel side mechanism is arranged on the steering knuckle, a brake is arranged between the wheel side mechanism and the steering knuckle, and a differential mechanism and a clutch mechanism are arranged on the axle housing;

[0007] The differential mechanism is provided with a differential transmission assembly, one side of the differential transmission assembly is provided with an input shaft, and the two ends of the differential transmission assembly corresponding to the steering knuckle are respectively provided with an output shaft drivingly connected to the differential transmission assembly and a transmission shaft rotatably connected to the steering knuckle, the transmission shaft is drivingly connected to the wheel side mechanism, the output shaft is provided with an output gear, and the transmission shaft is provided with a transmission gear;

[0008] The clutch mechanism includes a clutch inner gear disposed between the output shaft and the transmission shaft. The clutch inner gear is rotatably connected to the clutch frame, and the clutch frame is driven by a double-headed driving member to enable the clutch inner gear to have a first position and a second position;

[0009] When the clutch inner gear is in the first position, both ends of the clutch inner gear are respectively engaged with the output gear and the transmission gear;

[0010] When the clutch inner gear is in the second position, one end of the clutch inner gear is engaged with the output gear and the other end is disengaged from the transmission gear; or one end of the clutch inner gear is disengaged from the output gear and the other end is engaged with the transmission gear.

[0011] In one embodiment, when the clutch inner gear is in the second position, one end of the clutch inner gear is engaged with the output gear and the other end is disengaged from the transmission gear.

[0012] In one embodiment, a moving notch is provided in the axle housing corresponding to the position of the clutch frame, and the clutch frame passes through the moving notch.

[0013] In one embodiment, a steering oil cylinder is installed on the axle housing, and the steering oil cylinder is used to drive the rotation of the steering knuckle.

[0014] In one embodiment, the output end of the steering oil cylinder is rotatably connected to a steering link, and the other end of the steering link is rotatably connected to the steering knuckle.

[0015] In one embodiment, the differential drive assembly includes a bevel gear, a left half shaft gear, a plurality of planetary gears, and a right half shaft gear. The bevel gear is concentrically arranged with the left half shaft gear. The left half shaft gear is engaged with one side of the planetary gear, the other side of the planetary gear is engaged with the right half shaft gear, and the right half shaft gear is installed on the output shaft.

[0016] In one embodiment, an input gear is provided on the input shaft, and the input gear is engaged with the bevel gear.

[0017] The advantages or beneficial effects in the above technical solutions at least include: when an emergency brake needs to be applied through the brake, due to the cooperation of the differential mechanism and the clutch mechanism, the double-headed driving member of the clutch mechanism drives the clutch frame, and the clutch inner gear is driven by the clutch frame to move, so that the clutch inner gear can move from the first position to the second position, thereby enabling the transmission connection between the output shaft and the transmission shaft to be disconnected, so that the power at the output shaft can be disconnected from the transmission shaft, preventing the power of the output shaft from being transmitted to the transmission shaft, and thus being able to avoid the generation of torsional force to improve the service life of the output shaft and the transmission shaft; when it is necessary to make the output shaft and the transmission shaft in transmission connection, after the double-headed driving member reversely drives the clutch frame, the clutch inner gear can be moved to the first position, and the power of the output shaft is transmitted to the transmission shaft through the clutch inner gear. Brief Description of the Drawings

[0018] The drawings illustrate exemplary embodiments of the present invention and, together with the description thereof, are used to explain the principles of the present invention. These drawings are included to provide a further understanding of the present invention, and the drawings are included in this specification and form a part of this specification.

[0019] Figure 1 Shows a schematic diagram of a separable excavator drive axle according to an exemplary embodiment of the present invention;

[0020] Figure 2 Shows a schematic diagram of a differential mechanism and a clutch mechanism according to an exemplary embodiment of the present invention;

[0021] Figure 3 Shows an exploded schematic diagram of a differential mechanism and a clutch mechanism according to an exemplary embodiment of the present invention;

[0022] Figure 4 Shows an exploded schematic diagram of a clutch mechanism according to an exemplary embodiment of the present invention;

[0023] Figure 5 Shows a schematic diagram of a differential mechanism according to an exemplary embodiment of the present invention.

[0024] Description of the Reference Numerals:

[0025] 1. Axle housing;

[0026] 11. Moving notch;

[0027] 2. Steering knuckle;

[0028] 3. Wheel side mechanism;

[0029] 4. Brake;

[0030] 5. Differential mechanism;

[0031] 51. Differential drive assembly; 511. Bevel gear; 512. Left half shaft gear; 513. Planet gear; 514. Right half shaft gear; 52. Input shaft; 521. Input gear; 53. Output shaft; 531. Output gear; 54. Transmission shaft; 541. Transmission gear;

[0032] 6. Clutch mechanism;

[0033] 61. Clutch internal gear; 62. Clutch frame; 63. Double-headed drive member;

[0034] 7. Steering cylinder;

[0035] 8. Steering link. Detailed implementation manners

[0036] Embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. Although 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. On the contrary, these embodiments are provided to more thoroughly and completely understand the present invention. It should be understood that the drawings and embodiments of the present invention are only for exemplary purposes and are not used to limit the protection scope of the present invention.

[0037] It should be noted that, without conflict, the implementation manners and features in the implementation manners of the present invention can be combined with each other. The present invention will be described in detail below with reference to the drawings and in combination with the implementation manners.

[0038] As used herein, the term "including" and its variants are open-ended, that is, "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". The relevant definitions of other terms will be given in the following description. It should be noted that the concepts such as "first" and "second" mentioned in the present invention are only used to distinguish different devices, modules or units, and are not used to limit the order or interdependence relationship of the functions performed by these devices, modules or units.

[0039] It should be noted that the modifications of "one" and "multiple" mentioned in the present invention are illustrative rather than restrictive. Those skilled in the art should understand that, unless otherwise clearly specified in the context, it should be understood as "one or more".

[0040] The names of the messages or information exchanged between multiple devices in the implementation manners of the present invention are only for illustrative purposes and are not used to limit the scope of these messages or information.

[0041] See Figures 1 to 4 , an embodiment of the present utility model provides a separable excavator drive axle, which includes an axle housing 1. Steering knuckles 2 are rotatably connected to both ends of the axle housing 1. A wheel side mechanism 3 is provided on the steering knuckle 2. A brake 4 is provided between the wheel side mechanism 3 and the steering knuckle 2. A differential mechanism 5 and a clutch mechanism 6 are provided on the axle housing 1;

[0042] A differential drive assembly 51 is provided on the differential mechanism 5. An input shaft 52 is provided on one side of the differential drive assembly 51. Output shafts 53 and a transmission shaft 54 rotatably connected to the steering knuckle 2 and drivingly connected to the differential drive assembly 51 are respectively provided at both ends of the differential drive assembly 51 corresponding to the steering knuckle 2. The transmission shaft 54 is drivingly connected to the wheel side mechanism 3. An output gear 531 is provided on the output shaft 53. A transmission gear 541 is provided on the transmission shaft 54;

[0043] The clutch mechanism 6 includes a clutch internal gear 61 provided between the output shaft 53 and the transmission shaft 54. The clutch internal gear 61 is rotatably connected to a clutch frame 62. A bearing is provided between the clutch internal gear 61 and the clutch frame 62. The clutch frame 62 is driven by a double-headed driving member 63 to enable the clutch internal gear 61 to have a first position and a second position; wherein, the double-headed driving member 63 can be a double-headed hydraulic cylinder.

[0044] When the clutch internal gear 61 is in the first position, both ends of the clutch internal gear 61 are meshed with the output gear 531 and the transmission gear 541 respectively;

[0045] When the clutch internal gear 61 is in the second position, one end of the clutch internal gear 61 is meshed with the output gear 531, and the other end is disengaged from the transmission gear 541; or one end of the clutch internal gear 61 is disengaged from the output gear 531, and the other end is meshed with the transmission gear 541.

[0046] Among them, preferably, when the clutch internal gear 61 is in the second position, one end of the clutch internal gear 61 is meshed with the output gear 531, and the other end is disengaged from the transmission gear 541.

[0047] With the above structure, when an emergency brake is required by the brake 4, due to the cooperation of the differential mechanism 5 and the clutch mechanism 6, the double-headed driving member 63 of the clutch mechanism 6 drives the clutch frame 62, and the clutch inner gear 61 is driven to move by the clutch frame 62, so that the clutch inner gear 61 can move from the first position to the second position, thereby enabling the transmission connection between the output shaft 53 and the transmission shaft 54 to be disconnected, so that the power at the output shaft 53 can be disconnected from the transmission shaft 54, preventing the power of the output shaft 53 from being transmitted to the transmission shaft 54, and thus avoiding the generation of torsional force to improve the service life of the output shaft 53 and the transmission shaft 54; when it is necessary to connect the output shaft 53 and the transmission shaft 54 for transmission, after the double-headed driving member 63 drives the clutch frame 62 in the reverse direction, the clutch inner gear 61 can be moved to the first position, and the power of the output shaft 53 is transmitted to the transmission shaft 54 through the clutch inner gear 61.

[0048] In one embodiment, referring to Figure 1 and Figure 4 , a moving notch 11 is provided at the position of the axle housing 1 corresponding to the clutch frame 62, and the clutch frame 62 passes through the moving notch 11. In actual use, due to the setting of the moving notch 11, the clutch frame 62 can pass through the axle housing 1 and move.

[0049] In one embodiment, referring to Figure 1 , a steering oil cylinder 7 is installed on the axle housing 1, and the steering oil cylinder 7 is used to drive the rotation of the knuckle 2. In actual use, with the setting of the steering oil cylinder 7, the knuckle 2 can be driven to rotate on the axle housing 1, thereby enabling a turn to be achieved.

[0050] The output end of the steering oil cylinder 7 is rotatably connected to a steering link 8, and the other end of the steering link 8 is rotatably connected to the knuckle 2. In actual use, the setting of the steering link 8 enables the connection between the steering oil cylinder 7 and the knuckle 2 to be a rotational connection, making it smoother for the steering oil cylinder 7 to drive the knuckle 2.

[0051] In one embodiment, referring to Figure 2 , Figure 3 and Figure 5 , the differential drive assembly 51 includes a bevel gear 511, a left half shaft gear 512, a plurality of planetary gears 513, and a right half shaft gear 514. The bevel gear 511 is concentrically arranged with the left half shaft gear 512. The left half shaft gear 512 meshes with one side of the planetary gear 513, the other side of the planetary gear 513 meshes with the right half shaft gear 514, and the right half shaft gear 514 is installed on the output shaft 53. In actual use, through the cooperation of the bevel gear 511, the left half shaft gear 512, the plurality of planetary gears 513, and the right half shaft gear 514, the rotational speeds of the left half shaft gear 512 and the right half shaft gear 514 can be made different, facilitating the steering of the excavator.

[0052] An input gear 521 is provided on an input shaft 52, and the input gear 521 meshes with a bevel gear 511. In practical applications, with the input gear 521 provided on the input shaft 52, the power of the power part can be transmitted to the bevel gear 511 through the input shaft 52, thereby driving the rotation of the bevel gear 511.

[0053] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model.

[0054] Those skilled in the art should understand that the above embodiments are only for clearly explaining the present utility model, rather than limiting the scope of the present utility model. For those skilled in the art, other changes or modifications can be made on the basis of the above utility model, and these changes or modifications are still within the scope of the present utility model.

Claims

1. A clutchable excavator drive axle, characterized in that: It comprises an axle housing, both ends of which are rotatably connected to steering knuckles, a wheel side mechanism is arranged on the steering knuckle, a brake is arranged between the wheel side mechanism and the steering knuckle, and a differential mechanism and a clutch mechanism are arranged on the axle housing; The differential mechanism is provided with a differential transmission assembly, one side of the differential transmission assembly is provided with an input shaft, and the two ends of the differential transmission assembly corresponding to the steering knuckle are respectively provided with an output shaft drivingly connected to the differential transmission assembly and a transmission shaft rotatably connected to the steering knuckle, the transmission shaft is drivingly connected to the wheel side mechanism, the output shaft is provided with an output gear, and the transmission shaft is provided with a transmission gear; The clutch mechanism comprises a clutch internal gear disposed between the output shaft and the transmission shaft, the clutch internal gear being rotatably connected to a clutch frame, the clutch frame being driven by a double-headed driving member so that the clutch internal gear has a first position and a second position; When the clutch internal gear is located at the first position, two ends of the clutch internal gear are respectively meshed with the output gear and the transmission gear; When the clutch internal gear is located at the second position, one end of the clutch internal gear is engaged with the output gear and the other end is disengaged from the transmission gear; or one end of the clutch internal gear is disengaged from the output gear and the other end is engaged with the transmission gear.

2. The clutchable excavator drive axle according to claim 1, characterized in that: When the clutch internal gear is located at the second position, one end of the clutch internal gear is meshed with the output gear, and the other end is disengaged from the transmission gear.

3. The clutchable excavator drive axle according to claim 1, characterized in that: The axle housing is provided with a moving slot at a position corresponding to the clutch frame, and the clutch frame passes through the moving slot.

4. The clutchable excavator drive axle according to claim 1, characterized in that: A steering cylinder is installed on the axle housing, and the steering cylinder is used to drive the rotation of the steering knuckle.

5. The clutchable excavator drive axle according to claim 4, characterized in that: The output end of the steering oil cylinder is rotatably connected to a steering connecting rod, and the other end of the steering connecting rod is rotatably connected to a steering knuckle.

6. The clutchable excavator drive axle according to claim 1, characterized in that: The differential transmission assembly includes a bevel gear, a left half-shaft gear, a plurality of planetary gears, and a right half-shaft gear. The bevel gear is concentrically arranged with the left half-shaft gear. The left half-shaft gear is meshed with one side of the planetary gear, and the other side of the planetary gear is meshed with the right half-shaft gear. The right half-shaft gear is mounted on the output shaft.

7. The clutchable excavator drive axle according to claim 6, characterized in that: An input gear is arranged on the input shaft, and the input gear is meshed with the bevel gear.

Images