Power speed change and direction change system for field management machine

Abstract

The utility model relates to a power speed change and direction change system for a field management machine, which comprises an input shaft, an output shaft and a power transmission shaft, the power transmission shaft is provided with a power input tooth assembly, the power transmission shaft is provided with a plurality of power speed change teeth along the axial direction, and the output shaft is provided with power output teeth and a power direction change tooth assembly. The power turning tooth assembly can rotate relative to the output shaft, the power turning tooth assembly is meshed with one of the power speed changing teeth, the power input tooth assembly is meshed with the power speed changing teeth to transmit power to the power transmission shaft, and the power input tooth assembly is meshed with the power turning tooth assembly to transmit power to the power transmission shaft. By arranging the power output teeth on the output shaft, the power turning tooth assembly capable of rotating relative to the output shaft and the power speed changing teeth on the power transmission shaft, the power input tooth assembly is controlled to be meshed with other teeth to achieve forward rotation or reverse rotation and speed changing of the output shaft, the overall structure is compact and simple, and the needed size is small.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of transmission system, especially a kind of power transmission change direction system for rural management machine. BACKGROUND

[0002] Power source passes through gearbox and transmits the power after transmission to power output shaft, since power source generally does not have the function of forward and reverse rotation, therefore, the rotating direction of power output shaft is reversed by gearbox, to meet the diversified demand.

[0003] However, the power structure of existing gearbox, in order to realize the above-mentioned function, additional gears and shafts and corresponding shift mechanism are needed to realize forward and reverse rotation, a reverse shaft is needed to be separately arranged for reverse rotation, which increases the complexity of power transmission change direction system, resulting in that the power transmission change direction system is too large in size, which is not conducive to operation and later maintenance, and the manufacturing cost is relatively high.

[0004] Therefore, a kind of power transmission change direction system for rural management machine is needed, which can realize the forward and reverse rotation and transmission of power output shaft using fewer transmission shafts, and the structure is compact, the required volume is small, and the power transmission change direction system is simple in structure. SUMMARY

[0005] Therefore, a kind of power transmission change direction system for rural management machine is needed, which can realize the forward and reverse rotation and transmission of power output shaft using fewer transmission shafts, and the structure is compact, the required volume is small, and the power transmission change direction system is simple in structure.

[0006] The power transmission change direction system for rural management machine provided by the utility model adopts the following technical scheme:

[0007] A kind of power transmission change direction system for rural management machine, including input shaft, output shaft and power transmission shaft, the input shaft is used to receive power, the input shaft is slidably fitted with power input tooth assembly along the axial direction, the power transmission shaft is provided with a plurality of power transmission gears along the axial direction, the output shaft is provided with power output tooth and power change direction tooth assembly, the power change direction tooth assembly can rotate relative to output shaft, the power change direction tooth assembly is engaged with one of power transmission gears, the power input tooth assembly can be engaged with corresponding power transmission gear to transmit power to power transmission shaft, the power input tooth assembly can be engaged with power change direction tooth assembly to transmit power to power transmission shaft through corresponding power transmission gear, the power output tooth is used to receive the power of power transmission shaft and transmit power to output shaft, and the output shaft is used for power output.

[0008] Optionally, the input shaft is provided with a coupling tooth rotatable relative to the input shaft, the coupling tooth is engaged with one of the power shift gears, the coupling tooth has a coupling part one, the power input gear assembly has a coupling part two, the power input gear assembly is operable to engage the coupling part one with the coupling part two to transmit power to the power transmission shaft through the corresponding power shift gear.

[0009] Optionally, the power shift gears include power shift gear one and power shift gear two arranged along the axial direction, the power shift gear one is engaged with the coupling tooth, and the power shift gear two is engaged with the power input gear assembly and the power direction change gear assembly.

[0010] Optionally, the power direction change gear has tooth part one and tooth part two, the tooth part one is engaged with the power input gear assembly, and the tooth part two is engaged with one of the power shift gears.

[0011] Optionally, the power transmission shaft has a power transmission gear engaged with the power output gear for transmitting power to the output shaft.

[0012] Optionally, the power output gear is arranged on the output shaft through spline fitting.

[0013] Optionally, the power shift gears are arranged on the power transmission shaft through spline fitting.

[0014] In summary, the utility model has at least one of the following beneficial technical effects: the power output gear, the power direction change gear assembly rotatable relative to the output shaft and the power shift gears arranged on the power transmission shaft are arranged on the output shaft, the power input gear assembly is engaged with the power shift gears, the power transmission gears or the power direction change gear assembly to realize forward rotation or reverse rotation and gear shifting of the output shaft, the structure is compact, the required volume is small, and the gear box structure is simple. BRIEF DESCRIPTION OF DRAWINGS

[0015] In order to more clearly illustrate the specific embodiments of the utility model or the technical solutions in the prior art, the following will briefly introduce the drawings needed to be used in the specific embodiments or the prior art description, and obviously, the drawings in the following description are some embodiments of the utility model, and those skilled in the art can also obtain other drawings according to these drawings without creating labor.

[0016] Figure 1 It is the structure schematic of the utility model embodiment Figure One ;

[0017] Figure 2 It is the structure schematic of the utility model embodiment Figure Two .

[0018] Explanation of reference signs: 1, input shaft; 2, output shaft; 3, power transmission shaft; 4, power input gear assembly; 5, power transmission gear; 6, power output gear; 7, power direction changing gear assembly; 71, connecting gear part; 72, direction changing gear part; 8, combining gear; 9, power speed changing gear 1; 10, power speed changing gear 2. DETAILED DESCRIPTION

[0019] The advantages and effects of the present application can be easily understood by those skilled in the art from the above description. The present application can also be implemented or applied by different specific embodiments, and the details in the description can be modified or changed based on different views and applications without departing from the spirit of the present application.

[0020] The above description is combined with the accompanying drawings to explain the present application. Figures 1-2 The present application is further described in detail.

[0021] The present application discloses a power speed changing and direction changing system for a field management machine.

[0022] Reference is made to Figure 1 , Figure 2 The power speed changing and direction changing system for a field management machine comprises an input shaft 1, an output shaft 2 and a power transmission shaft 3, the input shaft 1 is used for receiving power, the input shaft 1 is provided with a power input gear assembly 4 in sliding fit along the axial direction, the power transmission shaft 3 is provided with a plurality of power speed changing gears in axial direction, the output shaft 2 is provided with a power output gear 6 and a power direction changing gear assembly 7, the power direction changing gear assembly 7 is rotatable relative to the output shaft 2, the power direction changing gear assembly 7 is engaged with one of the power speed changing gears, the power input gear assembly 4 is controllable to be engaged with the corresponding power speed changing gear to transmit power to the power transmission shaft 3, the power input gear assembly 4 is controllable to be engaged with the power direction changing gear assembly 7 to transmit power to the power transmission shaft 3 through the corresponding power speed changing gear, the power output gear 6 is used for receiving power from the power transmission shaft 3 and transmitting power to the output shaft 2, the output shaft 2 is used for power output, the power output gear 6, the power direction changing gear assembly 7 rotatable relative to the output shaft 2 and the power speed changing gears provided on the power transmission shaft 3 are arranged on the output shaft 2, the power input gear assembly 4 is controllable to be engaged with the power speed changing gears, the power transmission gears or the power direction changing gear assembly 7 to realize forward rotation or reverse rotation and speed changing of the output shaft 2, the structure is compact, the required volume is small, and the gearbox structure is simple.

[0023] In the present embodiment, the input shaft 1 receives power from the engine.

[0024] In the present embodiment, the power direction changing system is a gear transmission system.

[0025] In the embodiment, the power input gear assembly 4 comprises a coupling gear 8 rotatable relative to the input shaft 1, and the power transmission shaft 3 is provided with a plurality of power transmission gears in axial direction, and the coupling gear 8 is engaged with one of the power transmission gears.

[0026] The input shaft 1 is provided with the power input gear assembly 4 in axial sliding fit; the power transmission shaft 3 is provided with power transmission gears, and the output shaft 2 is provided with the power output gear 6 and the power direction changing gear assembly 7 rotatable relative to the output shaft 2, the power direction changing gear assembly 7 is engaged with the power transmission shaft 3, the power input gear assembly 4 is operable to engage with the power transmission gears or the power direction changing gear assembly 7 to transmit power to the power transmission shaft 3, and the power output gear 6 is used to transmit power of the power transmission shaft 3 to the output shaft 2; the power direction changing gear has a connecting gear portion 71 and a direction changing gear portion 72, the connecting gear portion 71 is engageable with the power input sliding gear, and the direction changing gear portion 72 is engaged with one of the power transmission gears.

[0027] In the embodiment, the power transmission system is used for installation in a field management machine. The output shaft 2 is connected with a walking input shaft and a cutter input shaft at both ends, and power is transmitted to a walking part through the walking input shaft and to a working part through the cutter input shaft.

[0028] In the embodiment, a plurality of power input gear assemblies 4 can be provided in axial direction of the input shaft 1, and engagement of the plurality of power input gear assemblies 4 with different power transmission gears can realize more gear positions for speed change. In the embodiment, two power input gear assemblies 4 are provided, and the power input gear assembly 4 comprises a coupling gear 8 provided on the input shaft 1 and a power input sliding gear slidable in axial direction of the input shaft 1, the power input sliding gear is engaged with the power transmission gears, and the coupling gear 8 is rotatable relative to the input shaft 1, specifically, the coupling gear 8 is provided on the input shaft 1 in an empty sleeve or through a bearing.

[0029] The power transmission shaft 3 is provided with power transmission gears, and the power transmission gears can be provided in plurality. In the embodiment, the power transmission gears comprise a power transmission gear one 9 coaxially provided on the power transmission shaft 3 and engaged with the coupling gear 8, and a power transmission gear two 10 coaxially provided on the power transmission shaft 3, the power transmission gear one 9 and the power transmission gear two 10 are different in diameter, the power transmission gear one 9 is engaged with the coupling gear 8, and the power transmission gear two 10 is engageable with the power input gear assembly 4 and the power direction changing gear assembly 7. The power transmission gear one 9 and the power transmission gear two 10 are provided on the power transmission shaft 3 in spline fit, the power transmission shaft 3 is coaxially provided with the power transmission gear 5 engaged with the power output gear 6, and the power transmission gear 5 is engaged with the power output gear 6 to transmit power to the output shaft 2.

[0030] In the embodiment, the engaging tooth 8 has an engaging part one, the power input sliding tooth has an engaging part two, the power input sliding tooth can be operated to move to make the engaging part two engage with the engaging part one to transmit power to the power transmission shaft 3 through the power gear one 9.

[0031] The power input sliding tooth can be operated to engage with the power gear two 10 to transmit power to the power transmission shaft 3.

[0032] The power gear one 9 and the power gear two 10 are spline-fitted on the power transmission shaft 3, and the power gear one 9 and the power gear two 10 have different diameters to realize two-gear transmission.

[0033] In other embodiments, a plurality of power gears can be provided to realize multi-gear transmission by engaging with the corresponding power input tooth assembly 4.

[0034] In the embodiment, the power gear change assembly 7 is provided on the output shaft 2 through a loose sleeve or a bearing, and has a connecting tooth part 71 and a gear change part 72. The gear change part 72 engages with the power gear two 10, and the power input sliding tooth can be operated to engage with the connecting tooth part 71 to transmit power to the power output tooth 6 through the power gear two 10.

[0035] When the power input sliding tooth engages with the engaging tooth 8, since the engaging tooth 8 and the power gear one 9 are always engaged, power is transmitted to the power transmission shaft 3, and since the power transmission gear 5 and the power output tooth 6 are always engaged, power is transmitted to the output shaft 2, realizing power output to the cutter input shaft and the walking input shaft.

[0036] Similarly, when the power input sliding tooth engages with the power gear two 10 to transmit power to the power transmission shaft 3, power transmission is realized.

[0037] When the power input sliding tooth engages with the connecting tooth part 71 of the power gear change assembly 7, power is transmitted to the power transmission shaft 3 through the gear change part 72 of the power gear change assembly 7 engaging with the power gear two 10, and then transmitted to the output shaft 2 through the power transmission gear 5 and the power output tooth 6 always engaging, realizing power change output to the cutter input shaft and the walking input shaft, changing the direction of the cutter input shaft and the walking input shaft, and realizing reverse rotation of the working part and the cutter part.

[0038] In the embodiment, the power input sliding tooth is operated to slide along the axis of the input shaft 1 by a shift fork, which is known in the prior art and will not be described here.

[0039] The principle and implementation mode of the present application are described by using specific examples herein, and the above examples are only used for helping to understand the method and core idea of the present application. The above description is only the preferred implementation mode of the present application, and it should be pointed out that, due to the limited nature of the expression, there are objectively infinite specific structures, and for ordinary skilled persons in the technical field, some improvements, decorations or changes can be made without departing from the principle of the present application, and the above technical features can be combined in an appropriate manner; the improvements, decorations, changes or combinations, or the direct application of the concept and technical solution of the present application to other occasions without improvement, should be regarded as the protection scope of the present application.

Claims

1. A power transmission and steering system for a garden tiller, characterized in that: The device includes an input shaft (1), an output shaft (2), and a power transmission shaft (3). The input shaft (1) is used to receive power. The input shaft (1) is axially slidably fitted with a power input gear assembly (4). The power transmission shaft (3) is axially provided with multiple power transmission gears. The output shaft (2) is provided with a power output gear (6) and a power reversing gear assembly (7). The power reversing gear assembly (7) can rotate relative to the output shaft (2). The power reversing gear assembly (7) meshes with one of the power transmission gears. The power input gear assembly (4) can be manipulated to mesh with the corresponding power transmission gear to transmit power to the power transmission shaft (3). The power input gear assembly (4) can be manipulated to mesh with the power reversing gear assembly (7) to transmit power to the power transmission shaft (3) through the corresponding power transmission gear. The power output gear (6) is used to receive power from the power transmission shaft (3) and transmit power to the output shaft (2). The output shaft (2) is used for power output.

2. The power transmission and steering system for a garden tiller according to claim 1, characterized in that: The input shaft (1) is provided with a coupling tooth (8) that can rotate relative to the input shaft (1). The coupling tooth (8) meshes with one of the power transmission teeth. The coupling tooth (8) has a coupling part one. The power input tooth assembly (4) has a coupling part two. The power input tooth assembly can be manipulated to make the coupling part one mesh with the coupling part two and transmit power to the power transmission shaft (3) through the corresponding power transmission teeth.

3. The power transmission and steering system for a garden tiller according to claim 2, characterized in that: The power transmission gear includes a power transmission gear one (9) and a power transmission gear two (10) arranged along the axial direction. The power transmission gear one (9) meshes with the engagement gear (8), and the power transmission gear two (10) can mesh with the power input gear assembly (4) and the power reversing gear assembly (7).

4. The power transmission and steering system for a garden tiller according to claim 1, characterized in that: The power shifting gear has a tooth section one and a tooth section two. The tooth section one can mesh with the power input gear assembly (4), and the tooth section two meshes with one of the power shifting gears.

5. The power transmission and steering system for a garden tiller according to claim 1, characterized in that: The power transmission shaft (3) has a power transmission gear (5), which meshes with the power output gear (6) to transmit power to the output shaft (2).

6. The power transmission and steering system for a garden tiller according to claim 1, characterized in that: The power output tooth (6) is set on the output shaft (2) by a spline connection.

7. The power transmission and steering system for a garden tiller according to claim 1, characterized in that: The power transmission gear spline is set on the power transmission shaft (3).

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