Excavator with speed reduction axle

Abstract

The utility model provides an excavator with a speed reduction axle, which comprises a frame assembly, the speed reduction axle is arranged on the frame assembly, an excavating arm is arranged on the frame assembly, wheels are arranged at two ends of the speed reduction axle, a differential mechanism is arranged on the speed reduction axle, and an input shaft and symmetrically arranged output shafts are arranged on the differential mechanism. A supporting shaft is arranged at the position, corresponding to the output shaft, of the speed reduction axle, and a wheel edge speed reduction mechanism used for installing wheels is arranged on the supporting shaft. The hub reduction mechanism comprises a hub, an end cover, a planet carrier and a sun gear, the end cover and the planet carrier are integrally formed, the sun gear is installed on the output shaft, the output shaft penetrates through the planet carrier, and a buffering mechanism is arranged between the end cover and the sun gear. By means of the structure, under the cooperation of the rotating seat, the elastic piece and the damping piece of the buffering mechanism, the elastic piece can play a buffering role on the output shaft which moves in the axial direction so as to reduce the axial movement force, and when the output shaft moves, the elastic piece makes contact with the end face of the damping piece so as to reduce the movement space and effectively reduce noise.

Description

TECHNICAL FIELD

[0001] The utility model relates to excavator technical field especially excavator with reduction axle. BACKGROUND

[0002] The axle of excavator generally includes axle housing, differential, wheel edge reducer and brake and so on component composition. Among them, differential can make the wheel hub of axle housing two ends realize the mechanism of rotating at different rotating speed, thereby can realize the turning of excavator;Wheel edge reducer acts in order to make the wheel, under the reaction of ground adhesion, produce larger driving force, the rotating speed and torque that the main reducer transmits via its speed reduction and torque increase after, transmit to the wheel again.

[0003] Wheel edge reduction axle generally is composed of inner gear ring, sun gear, pin shaft, planet wheel and planet carrier, realizes the effect of deceleration through the meshing cooperation between inner gear ring, sun gear and planet wheel, but there is generally machining precision error in the machining process, and planet wheel and sun gear all adopt straight tooth gear design, in the use process, the axial movement of sun gear is easy to cause, and noise is produced. UTILITY MODEL CONTENTS

[0004] The utility model discloses excavator with reduction axle mainly solves the problem that the wheel edge reduction axle of traditional excavator is easy to cause the axial movement of sun gear in the use process, and produces noise.

[0005] To realize the purpose, the technical scheme of the utility model is as follows:

[0006] The utility model provides an excavator with reduction axle, including frame assembly, be provided with reduction axle on frame assembly, be provided with excavating arm on frame assembly, be provided with wheel at the both ends of reduction axle, be provided with differential on reduction axle, be provided with input shaft and the output shaft of symmetrical setting on differential, the position of corresponding output shaft of reduction axle is provided with support shaft, be provided with wheel edge reduction mechanism for installing wheel on support shaft;

[0007] The wheel edge reduction mechanism includes wheel hub, integrally formed end cover and planet carrier, sun gear installed on output shaft, the output shaft passes through planet carrier, the buffer mechanism is arranged between the end cover and sun gear, the first recess and the second recess are arranged at the positions of the end cover and sun gear corresponding to the buffer mechanism respectively;

[0008] The buffer mechanism includes the rotary seat of rotation connection in the second recess, elastic piece and the damping piece of installation in the first recess, one end of elastic piece is arranged in rotary seat, and the other end is supported in the first recess, and the damping piece has elasticity.

[0009] In an embodiment, the buffering mechanism further comprises a bearing installed in the second groove, and the rotating seat is rotatably connected to the second groove through the bearing.

[0010] In an embodiment, a receiving groove for receiving the elastic member is arranged on the side of the rotating seat facing the damping member, and the elastic member is installed in the receiving groove.

[0011] In an embodiment, a pressing plate is arranged at the position of the receiving groove corresponding to the damping member, and the pressing plate is elastic.

[0012] In an embodiment, the wheel-side reduction mechanism further comprises a plurality of planetary gears and an internal gear, and the planetary gears are respectively engaged with the sun gear and the internal gear.

[0013] In an embodiment, the output shaft is integrally formed with the sun gear.

[0014] The advantages or beneficial effects of the above technical solution at least include: after the output shaft of the differential of the reduction axle drives the wheel-side reduction mechanism, the wheel can be driven to rotate, at this time, when the output shaft axially moves, the elastic member can buffer the axially moving output shaft through the cooperation of the rotating seat, the elastic member and the damping member of the buffering mechanism, so as to reduce the axial moving force, and when the output shaft axially moves, the damping member end surface is contacted, so as to reduce the moving space and effectively reduce the noise. BRIEF DESCRIPTION OF DRAWINGS

[0015] The accompanying drawings illustrate exemplary embodiments of the present application and together with the general description given above, and the detailed description given below, explain the principles of the present application. These drawings are included herewith to provide a further understanding of the present application and are incorporated in and constitute a part of this specification.

[0016] Figure 1 A schematic view of an excavator with a reduction axle according to an exemplary embodiment of the present application is shown;

[0017] Figure 2 A schematic view of a reduction axle according to an exemplary embodiment of the present application is shown;

[0018] Figure 3 A cross-sectional schematic view of a rotating seat, an elastic member and a pressing plate according to an exemplary embodiment of the present application is shown; Figure 2

[0019] Figure 4 An enlarged schematic view of A in the rotating seat, the elastic member and the pressing plate according to an exemplary embodiment of the present application is shown; Figure 3

[0020] Figure 5 A schematic view of a rotating seat, an elastic member and a pressing plate according to an exemplary embodiment of the present application is shown.​​

[0021] BRIEF DESCRIPTION OF DRAWINGS

[0022] 1. frame assembly;

[0023] 2. reduction axle;

[0024] 3. excavating arm;

[0025] 4. wheel;

[0026] 5. differential;

[0027] 51. input shaft; 52. output shaft;

[0028] 6. support shaft;

[0029] 7. wheel-side reduction mechanism;

[0030] 71. hub; 72. end cover; 721. first groove; 73. carrier; 74. sun gear; 741. second groove; 75. planetary gear; 76. ring gear;

[0031] 8. damping mechanism;

[0032] 81. rotating seat; 811. accommodating groove; 82. elastic member; 83. damping member; 84. bearing; 85. pressing plate. DETAILED DESCRIPTION

[0033] Embodiments of the present application will be described in more detail by referring to the drawings. Although some embodiments of the present application are shown in the drawings, it is understood that the present application can be implemented in various forms, and should not be interpreted as being limited to the embodiments described herein. Rather, these embodiments are provided so that the present application can be more thoroughly and completely understood. It is understood that the drawings and embodiments of the present application are for illustrative purposes only, and are not intended to limit the scope of the present application.

[0034] It should be noted that the embodiments and features in the embodiments of the present application can be combined with each other without conflict. The present application will be described in detail below with reference to the drawings and in conjunction with the embodiments.

[0035] The term "include" and variations thereof, as used in this document, mean the same as "comprise" or "comprises." The term "based on" means "based, at least in part, 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." Related terms shall be construed accordingly. It should be noted that "a" or "an" entity as used herein means "one or more" of that entity. The terms "first," "second," and the like as used in this document do not imply a sequence or order unless clearly indicated by the context.

[0036] It should be noted that the terms "one" and "a" as used herein mean "one or more" of the referenced entity, unless the context clearly indicates otherwise. The terms "first," "second," and the like as used in this document do not imply a sequence or order unless clearly indicated by the context.

[0037] The names of the messages or information exchanged between the plurality of devices in the embodiments of the present application are only for illustrative purposes, and are not intended to limit the scope of these messages or information.

[0038] Referring to Figure 1 , Figure 2 , Figure 3 and Figure 4 , the embodiments of the present application provide a kind of excavator with reduction axle, including frame assembly 1, frame assembly 1 is provided with reduction axle 2, frame assembly 1 is provided with excavating arm 3, the both ends of reduction axle 2 are provided with wheel 4, reduction axle 2 is provided with differential 5, differential 5 is provided with input shaft 51 and the output shaft 52 of symmetrical arrangement, reduction axle 2 is provided with support shaft 6 corresponding output shaft 52, support shaft 6 is provided with wheel edge reduction mechanism 7 for installing wheel 4;

[0039] Wheel edge reduction mechanism 7 includes hub 71, integrally formed end cover 72 and planetary carrier 73, sun gear 74 mounted on output shaft 52, output shaft 52 passes through planetary carrier 73, buffer mechanism 8 is arranged between end cover 72 and sun gear 74, first recess 721 and second recess 741 are respectively arranged at the position corresponding to buffer mechanism 8 of end cover 72 and sun gear 74;

[0040] Buffer mechanism 8 includes rotating seat 81 rotatably connected in second recess 741, elastic member 82 and damping member 83 mounted in first recess 721, one end of elastic member 82 is arranged in rotating seat 81, the other end is supported in first recess 721, damping member 83 has elasticity.

[0041] With the above structure, after the output shaft 52 of the differential 5 in the reduction axle 2 drives the wheel-side reduction mechanism 7, the wheel 4 can be driven to rotate, at this time, when the output shaft 52 axially moves, the elastic member 82 can buffer the axially moving output shaft 52 through the cooperation of the rotating seat 81, the elastic member 82 and the damping member 83, so as to reduce the axial moving force, and when the output shaft 52 axially moves, the damping member 83 is in contact with the end surface, so as to reduce the moving space and effectively reduce the noise.

[0042] In an embodiment, referring to Figure 4 and Figure 5 , the buffering mechanism 8 further comprises a bearing 84 installed in the second groove 741, and the rotating seat 81 is rotatably connected to the second groove 741 through the bearing 84. In actual use, the rotating seat 81 is rotatably connected to the second groove 741 through the bearing 84, so as to reduce the resistance between the rotating seat 81 and the second groove 741 and protect the rotating seat 81.

[0043] The side of the rotating seat 81 facing the damping member 83 is provided with a containing groove 811 for containing the elastic member 82, and the elastic member 82 is installed in the containing groove 811. In actual use, the containing groove 811 can position one end of the elastic member 82.

[0044] The containing groove 811 is provided with a pressing plate 85 corresponding to the position of the damping member 83, and the pressing plate 85 is elastic. In actual use, the pressing plate 85 can further reduce the impact force and the noise generated during the movement by being in contact with the damping member 83.

[0045] In an embodiment, referring to Figure 3 and Figure 4 , the wheel-side reduction mechanism 7 further comprises a plurality of planetary gears 75 and an internal gear 76, and the planetary gears 75 are respectively engaged with the sun gear 74 and the internal gear 76. In actual use, the power of the output shaft 52 can be transmitted to the planetary gears 75 through the cooperation of the planetary gears 75, the sun gear 74 and the internal gear 76, so as to drive the rotation of the hub 71.

[0046] The output shaft 52 is integrally formed with the sun gear 74. In actual use, the output shaft 52 and the sun gear 74 are integrally formed, so as to ensure the power transmission between the output shaft 52 and the sun gear 74 and improve the stability between the output shaft 52 and the sun gear 74.

[0047] In the description of the utility model, it is necessary to explain, the term "center", "upper", "lower", "left", "right", "vertical", "horizontal", "internal", "external" and so on indicate the orientation or position relation is based on the orientation or position relation shown in the drawing, only for the convenience of describing the utility model and simplifying the description, and is not indicate or imply the device or element indicated must have a particular orientation, construct and operate with a particular orientation, therefore can not be understood as the limitation to the utility model.

[0048] Those skilled in the art should understand that the above embodiments are only for clearly illustrating the utility model, and not limiting the scope of the 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 utility model.

Claims

1. An excavator equipped with a reduction gear axle, characterized in that, The application relates to a vehicle frame assembly provided with a reduction axle, a digging arm, wheels at the two ends of the reduction axle, a differential provided on the reduction axle, an input shaft and symmetrically arranged output shafts provided on the differential, a support shaft provided at the position corresponding to the output shaft of the reduction axle, and a wheel-side reduction mechanism provided on the support shaft for mounting the wheels. The wheel-side reduction mechanism comprises a hub, an integrally formed end cover and planet carrier, a sun gear mounted on the output shaft, the output shaft penetrating through the planet carrier, a buffer mechanism provided between the end cover and the sun gear, a first recess and a second recess respectively provided on the end cover and the sun gear at the positions corresponding to the buffer mechanism. The buffer mechanism comprises a rotating seat rotatably connected in the second recess, an elastic member and a damping member mounted in the first recess, one end of the elastic member is arranged in the rotating seat, the other end of the elastic member is supported in the first recess, and the damping member is elastic.

2. The excavator with a reduction axle as claimed in claim 1, characterized in that, The buffer mechanism further comprises a bearing mounted in the second recess, and the rotating seat is rotatably connected to the second recess through the bearing.

3. The excavator with a reduction axle as claimed in claim 1, wherein The side of the rotating seat facing the damping member is provided with a containing groove for containing the elastic member, and the elastic member is mounted in the containing groove.

4. The excavator with a reduction axle as claimed in claim 3, characterized in that, The containing groove is provided with a pressing plate at the position corresponding to the damping member, and the pressing plate is elastic.

5. The excavator with a reduction axle as claimed in claim 1, wherein, The wheel-side reduction mechanism further comprises a plurality of planet gears and an internal gear, and the planet gears are respectively engaged with the sun gear and the internal gear.

6. The excavator with a reduction axle as claimed in claim 1, wherein, The output shaft is integrally formed with the sun gear.

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