A reduction drive system for a loader

Abstract

The utility model relates to loader drive system technical field provides a kind of reduction drive system for loader, including reducer and drive axle, the input end of the front and rear drive axle of loader is connected respectively at the both ends of reducer output end, the output end of power piece is connected reducer input end, power piece is set in reducer outside;Drive axle includes main reduction mechanism, differential mechanism, side transmission mechanism, side reduction mechanism and axle housing, main reduction mechanism is set in axle housing middle part, main reduction mechanism connects reducer output end, differential mechanism is set in the inside of main reduction mechanism, the left and right sides of differential mechanism are all connected side transmission mechanism, side transmission mechanism is all set side reduction mechanism away from the one end of differential mechanism, side reduction mechanism is all connected wheel hub.The utility model can improve the power output and torque of loader drive axle, optimize reduction effect, while being convenient for maintenance.

Description

Technical Field

[0001] This utility model relates to the technical field of loader transmission systems, specifically to a reduction drive system for loaders. Background Technology

[0002] The key component of a loader's drive system is the drive axle, whose main function is to transmit power to the drive wheels, while also providing functions such as speed reduction, torque increase, and differential speed control. Existing loader drive axles typically use a single power source input, transmitting power to the wheels through a reducer and a series of transmission mechanisms.

[0003] However, as loaders develop towards larger and heavier loads, single-power-source drive axles have gradually revealed problems such as insufficient power and limited torque output, making it difficult to meet the operational needs under complex working conditions. At the same time, the reduction mechanism design of traditional drive axles is relatively simple, and the reduction ratio adjustment range is limited, which affects the adaptability of loaders. In addition, the existing drive axle's structural layout is not reasonable enough, resulting in inconvenient maintenance, and the transmission efficiency needs to be further improved.

[0004] Therefore, in order to address the above problems, a reduction drive system for loaders is proposed. Utility Model Content

[0005] This invention addresses the shortcomings of existing technologies by developing a reduction drive system for loaders. This invention can improve the power output and torque of the loader drive system, optimize the deceleration effect, and facilitate maintenance.

[0006] To achieve the above objectives, this utility model employs the following technical solution: A speed reduction drive system for a loader includes a speed reducer and a drive axle. The two ends of the output end of the speed reducer are respectively connected to the input ends of the front and rear drive axles of the loader. The input end of the speed reducer is connected to the output end of a power component, which is located on the outside of the speed reducer. The drive axle includes a main reduction mechanism, a differential mechanism, a side transmission mechanism, a side reduction mechanism, and an axle housing. The main reduction mechanism is located in the middle of the axle housing and is connected to the output end of the reducer. The differential mechanism is located inside the main reduction mechanism. The left and right sides of the differential mechanism are connected to the side transmission mechanism. The side transmission mechanism is located at the end of the side transmission mechanism away from the differential mechanism and is connected to the wheel hub.

[0007] Preferably, the reducer includes a housing and a front reduction mechanism, with the power component located on one side of the housing.

[0008] Preferably, the front reduction mechanism includes a front input shaft, which is rotatably disposed within the housing. One end of the front input shaft is connected to the output end of the power component. A front input gear is coaxially disposed on the front input shaft. The front input gear meshes with the front output gear. The front output gear is coaxially disposed on the front output shaft. The front output shaft is rotatably disposed within the housing, and one end passes through the housing and is connected to the main reduction mechanism.

[0009] Preferably, two power components are installed on the housing, and the two ends of the front input shaft are respectively connected to the output ends of the two power components.

[0010] Preferably, the front reduction mechanism also includes an intermediate gear, which is disposed between the front input gear and the front output gear. Both the front input gear and the front output gear are meshed with the intermediate gear, and power is transmitted through the intermediate gear. The intermediate gear is coaxially disposed on the intermediate shaft, and the intermediate shaft is rotatably disposed inside the housing.

[0011] Preferably, the main reduction mechanism includes a driving bevel gear, which is coaxially mounted on the front output shaft. The driving bevel gear meshes with a driven bevel gear, which is rotatably mounted inside the axle housing.

[0012] Preferably, the differential mechanism includes a differential housing, which is coaxially disposed inside the driven bevel gear. A plurality of planetary bevel gears are evenly arranged circumferentially along the axis of the driven bevel gear inside the differential housing, and the axes of the planetary bevel gears are all perpendicular to the axis of the driven bevel gear.

[0013] Preferably, the side transmission mechanism includes a half-shaft bevel gear and a side connecting shaft. The half-shaft bevel gear is coaxially disposed at one end of the side connecting shaft. The axis of the half-shaft bevel gear is collinear with the axis of the driven bevel gear, and the half-shaft bevel gear meshes with each planetary bevel gear. The side connecting shaft is rotatably disposed within the axle housing.

[0014] Preferably, the side reduction mechanism includes a sun gear, which is coaxially located at the end of the side connecting shaft away from the half-shaft bevel gear. The sun gear meshes with several planet gears, which are all rotatably mounted on the wheel carrier and are evenly arranged circumferentially along the axis of the sun gear. The outer side of the planet gear meshes with an internal gear ring, the axis of which is collinear with the axis of the sun gear. The internal gear ring is connected to the axle housing, and the wheel carrier is connected to the wheel hub.

[0015] The effects provided in the utility model description are merely those of the embodiments, and not all the effects of the utility model. The above technical solution has the following advantages: 1. This utility model improves transmission efficiency by connecting the two ends of the reducer output to the front and rear drive axles of the loader respectively. It also sets the reducer on the drive axle, resulting in good overall integrity. At the same time, it reduces the number of parts that connect one end of the reducer output to the input end of the drive axle, thus reducing costs and improving economic efficiency. 2. This utility model, through the multi-stage reduction design of setting a front reduction mechanism, a main reduction mechanism and a side reduction mechanism, can obtain a larger overall reduction ratio, which further improves the driving force of the loader. Moreover, the shifting mechanism of the traditional reduction system is removed from the front reduction mechanism, which is not easily damaged while meeting the needs of the loader, and has better economy and stability. 3. This utility model provides a reducer housing, a connecting housing, and a bridge housing, which are detachably connected to each other, facilitating internal inspection and replacement. 4. By setting a side reduction mechanism, and setting the side reduction mechanism as a planetary gear train structure, this utility model has high transmission efficiency, strong load-bearing capacity, and compact structure, which is conducive to reducing the overall size of the drive axle. 5. This utility model can be driven by either a single power component or a dual power component. When using a dual power component, the power output and torque can be improved to meet the operating requirements of the loader under heavy load and complex working conditions. Attached Figure Description

[0016] The accompanying drawings are provided to further understand the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation thereof.

[0017] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present utility model; Figure 2 This is a schematic diagram of the structure of this utility model, showing the removal of the housing shell, bridge shell, and connecting shell. Figure 1 ; Figure 3 This is a schematic diagram of the structure of this utility model, showing the removal of the housing shell, bridge shell, and connecting shell. Figure 2 ; Figure 4 This is a cross-sectional schematic diagram of the side transmission mechanism and the side deceleration mechanism according to an embodiment of the present utility model; Figure 5 This is a schematic diagram of the overall power transmission principle of an embodiment of this utility model.

[0018] Figure 6 This is a schematic diagram of a layout arrangement for connecting the reducer and the drive axle according to an embodiment of the present utility model. Figure 7 This is a schematic diagram of another layout for connecting the reducer and the drive axle according to an embodiment of the present invention.

[0019] In the diagram, 1. Reducer; 2. Power unit; 3. Main reduction mechanism; 4. Differential mechanism; 5. Side transmission mechanism; 6. Side reduction mechanism; 7. Axle housing; 8. Connecting housing; 9. Wheel hub; 11. Housing; 12. Front reduction mechanism; 121. Front input shaft; 122. Front input gear; 123. Front output gear; 124. Front output shaft; 125. Intermediate gear; 126. Intermediate shaft; 31. Driving bevel gear; 32. Driven bevel gear; 41. Differential housing; 42. Planetary bevel gear; 51. Half-shaft bevel gear; 52. Side connecting shaft; 61. Sun gear; 62. Planetary gears; 63. Wheel carrier; 64. Internal gear ring. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] like Figures 1-7 As shown, this utility model provides a technical solution: A speed reduction drive system for a loader includes a speed reducer 1 and a drive axle. The output end of the speed reducer 1 is connected to the input end of the drive axle, and the input end of the speed reducer 1 is connected to the output end of a power component 2. The power component 2 can be an engine or a motor and is disposed on the outside of the speed reducer 1. The speed reducer 1 includes a housing 11 and a front reduction mechanism 12, and the power component 2 is disposed on the housing 11. The drive axle includes a main reduction mechanism 3, a differential mechanism 4, a side transmission mechanism 5, a side reduction mechanism 6, and an axle housing 7. The main reduction mechanism 3 is located in the middle of the axle housing 7 and is connected to the output end of the reducer 1. The main reduction mechanism 3 includes a driving bevel gear 31, which is connected to the front output shaft 124. The driving bevel gear 31 meshes with a driven bevel gear 32, which is rotatably mounted inside the axle housing 7 via bearings. The differential mechanism 4 is located inside the main reduction mechanism 3. The differential mechanism 4 includes a differential housing 41, which is coaxially mounted inside the driven bevel gear 32. The driven bevel gear 32 can drive the differential housing 41 to rotate. Two or more planetary bevel gears 42 are evenly arranged circumferentially along the axis of the driven bevel gear 32 inside the differential housing 41. The planetary bevel gears 42 are rotatably mounted on the differential housing 41 via a cross shaft, and the axes of the planetary bevel gears 42 are all perpendicular to the axis of the driven bevel gear 32. The left and right sides of the differential mechanism 4 are connected to the side transmission mechanism 5. The side transmission mechanism 5 includes a half-shaft bevel gear 51 and a side connecting shaft 52. The half-shaft bevel gear 51 is coaxially arranged at one end of the side connecting shaft 52. The axis of the half-shaft bevel gear 51 is collinear with the axis of the driven bevel gear 32. The half-shaft bevel gear 51 meshes with each planetary bevel gear 42. The side connecting shaft 52 is rotatably arranged in the axle housing 7. The side transmission mechanism 5 is provided with a side reduction mechanism 6 at the end away from the differential mechanism 4. The side reduction mechanism 6 is connected to the wheel hub 9.

[0022] In an optional embodiment, the front reduction mechanism 12 includes a front input shaft 121, which is rotatably disposed within the housing 11. One end of the front input shaft 121 is connected to the output end of the power component 2 via a coupling. A front input gear 122 is coaxially disposed on the front input shaft 121, and the front input gear 122 meshes with the front output gear 123. The front output gear 123 is coaxially disposed on the front output shaft 124, which is rotatably disposed within the housing 11 via bearings. Both ends of the front output shaft 124 pass through the housing 11 and are respectively connected to the front and rear drive axles of the loader. The front reduction mechanism 12 eliminates the shifting structure, which, compared to traditional reduction mechanisms, offers better economy and stability, is less prone to damage, and does not affect the normal driving requirements of the loader, thus improving its practicality.

[0023] In an optional embodiment, two power components 2 are provided on the housing 11, and the two ends of the front input shaft 121 are respectively connected to the output ends of the two power components 2 to improve the torque of the front input shaft 121, while avoiding the problem of drive stoppage after a single power component fails, thus improving safety and practicality.

[0024] In an optional embodiment, the front reduction mechanism 12 further includes an intermediate gear 125 disposed between the front input gear 122 and the front output gear 123. The front input gear 122 and the front output gear 123 are both meshed with the intermediate gear 125, and power is transmitted through the intermediate gear 125. The intermediate gear 125 is coaxially disposed on the intermediate shaft 126, and the intermediate shaft 126 is rotatably disposed within the housing 11 to change the transmission direction.

[0025] In an optional embodiment, the housing 11 is mounted on the drive axle. One side of the housing 11 is detachably connected to the middle of the axle housing 7 of one drive axle via a connecting shell 8, which can be bolted together. One end of the front output shaft 124 is directly connected to the main reduction mechanism of the drive axle, and the other end of the front output shaft 124 is connected to the main reduction mechanism 3 of another drive axle via a drive shaft, universal joint, and coupling. Specifically, from the front output shaft 124, universal joint one, coupling one, telescopic universal coupling one, and drive shaft one are sequentially connected to the other drive axle, such as... Figure 6 As shown.

[0026] In another embodiment, the housing 11 is mounted on the loader chassis. Both ends of the front output shaft 124 pass through the housing 11 and are connected to the front and rear drive axles of the loader via couplings, drive shafts, and universal joints. Specifically, one end of the front output shaft 124 is connected to the rear drive axle via a second drive shaft, and the other end of the front output shaft 124 is connected to the front drive axle via a second telescopic universal coupling, a second coupling, a second universal joint, a third drive shaft, and a third universal joint. Figure 7 As shown.

[0027] In an optional embodiment, the side reduction mechanism 6 includes a sun gear 61, coaxially disposed at the end of the side connecting shaft 52 away from the half-shaft bevel gear 51. The sun gear 61 meshes with three planet gears 62, all of which are rotatably mounted on the wheel carrier 63 via a wheel axle. The planet gears 62 are evenly arranged circumferentially along the axis of the sun gear 61. The outer sides of the planet gears 62 mesh with an internal gear ring 64, the axis of which is collinear with the axis of the sun gear 61. The internal gear ring 64 is connected to the axle housing 7, and the wheel carrier 63 is connected to the wheel hub 9, which is used to mount the wheel.

[0028] Working principle: Power component 2 outputs power to the front input shaft 121, which drives the front input gear 122 to rotate. The front input gear 122 drives the front output gear 123 to rotate through direct meshing or transmission via intermediate gear 125. The front output gear 123 drives the front output shaft 124 to rotate, which in turn drives the driving bevel gear 31 to rotate. The driving bevel gear 31 meshes with and drives the driven bevel gear 32 to rotate. The driven bevel gear 32 drives the differential housing 41 to rotate. The differential housing 41 drives the half-shaft bevel gears 51 on both sides to rotate through the planetary bevel gears 42. The half-shaft bevel gears 51 drive the side connecting shaft 52 to rotate. The side connecting shaft 52 drives the sun gear 61 to rotate. The sun gear 61 drives the planetary gears 62 to rotate around their own axis. Since the internal gear ring 64 is set on the bridge frame, the planetary gears 62 drive the wheel carrier 63 to rotate around the axis of the sun gear 61 while rotating. The wheel carrier 63 ultimately drives the wheel hub 9, i.e., the wheel, to rotate. The loader's drive axle achieves a three-stage reduction structure from the power component 2 to the wheel hub 9 through the front reduction mechanism 12, the main reduction mechanism 3, and the side reduction mechanism 6. Furthermore, the torque of the two power components 2 is superimposed, realizing that the high speed and low torque input of the power component 2 is output as low speed and high torque through the reducer 1 and the drive axle, which satisfies the requirements of high torque output and cost advantage.

[0029] Any aspects of this utility model that are not detailed herein are conventional technical means known to those skilled in the art.

[0030] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0031] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "multiple" means two or more unless otherwise explicitly specified.

[0032] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

[0033] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A reduction drive system for a loader, comprising a reducer (1) and a drive axle, characterized in that, The two ends of the output end of the reducer (1) are respectively connected to the input ends of the front and rear drive axles of the loader. The input end of the reducer (1) is connected to the output end of the power component (2). The power component (2) is located outside the reducer (1). The drive axle includes a main reduction mechanism (3), a differential mechanism (4), a side transmission mechanism (5), a side reduction mechanism (6), and an axle housing (7). The main reduction mechanism (3) is located in the middle of the axle housing (7). The main reduction mechanism (3) is connected to the output end of the reducer (1). The differential mechanism (4) is located inside the main reduction mechanism (3). The left and right sides of the differential mechanism (4) are connected to the side transmission mechanism (5). The side transmission mechanism (5) is located at the end of the side transmission mechanism (5) away from the differential mechanism (4). The side reduction mechanism (6) is connected to the wheel hub (9).

2. The reduction drive system for a loader according to claim 1, characterized in that: The reducer (1) includes a housing (11) and a front reduction mechanism (12), and the power component (2) is located on one side of the housing (11).

3. The reduction drive system for a loader according to claim 2, characterized in that: The front reduction mechanism (12) includes a front input shaft (121), which is rotatably disposed inside the housing (11). One end of the front input shaft (121) is connected to the output end of the power component (2). A front input gear (122) is coaxially disposed on the front input shaft (121). The front input gear (122) meshes with the front output gear (123). The front output gear (123) is coaxially disposed on the front output shaft (124). The front output shaft (124) is rotatably disposed inside the housing (11). One end of the front output shaft (124) passes through the housing (11) and is connected to the main reduction mechanism (3).

4. The reduction drive system for a loader according to claim 3, characterized in that: Two power components (2) are provided on the housing (11), and the two ends of the front input shaft (121) are respectively connected to the output ends of the two power components (2).

5. A reduction drive system for a loader according to claim 3, characterized in that: The front reduction mechanism (12) also includes an intermediate gear (125), which is disposed between the front input gear (122) and the front output gear (123). The front input gear (122) and the front output gear (123) are both meshed with the intermediate gear (125) to transmit power through the intermediate gear (125). The intermediate gear (125) is coaxially disposed on the intermediate shaft (126), and the intermediate shaft (126) is rotatably disposed inside the housing (11).

6. A reduction drive system for a loader according to claim 3, characterized in that: The main reduction mechanism (3) includes a driving bevel gear (31), which is connected to the front output shaft (124). The driving bevel gear (31) meshes with the driven bevel gear (32), which is rotatably disposed in the axle housing (7).

7. A reduction drive system for a loader according to claim 6, characterized in that: The differential mechanism (4) includes a differential housing (41) and is coaxially arranged inside the driven bevel gear (32). Several planetary bevel gears (42) are evenly arranged circumferentially along the axis of the driven bevel gear (32) inside the differential housing (41). The axes of the planetary bevel gears (42) are all perpendicular to the axis of the driven bevel gear (32).

8. A reduction drive system for a loader according to claim 7, characterized in that: The side transmission mechanism (5) includes a half-shaft bevel gear (51) and a side connecting shaft (52). The half-shaft bevel gear (51) is coaxially disposed at one end of the side connecting shaft (52). The axis of the half-shaft bevel gear (51) is collinear with the axis of the driven bevel gear (32). The half-shaft bevel gear (51) meshes with each planetary bevel gear (42). The side connecting shaft (52) is rotatably disposed within the bridge housing (7).

9. A reduction drive system for a loader according to claim 8, characterized in that: The side reduction mechanism (6) includes a sun gear (61), which is coaxially located at the end of the side connecting shaft (52) away from the half shaft bevel gear (51). The sun gear (61) meshes with several planet gears (62). The planet gears (62) are all rotatably mounted on the wheel carrier (63), and the planet gears (62) are evenly arranged circumferentially along the axis of the sun gear (61). The outer side of the planet gears (62) meshes with an internal gear ring (64). The axis of the internal gear ring (64) is collinear with the axis of the sun gear (61). The internal gear ring (64) is connected to the bridge housing (7), and the wheel carrier is connected to the wheel hub (9).

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