阅读说明：本技术 分动箱、底盘动力输出装置及车辆 (Transfer case, chassis power output device and vehicle ) 是由 刘洋 周新文 郭佳鹏 王仁鹏 雷波 李鹏 文艺 于 2018-09-07 设计创作，主要内容包括：本发明涉及传动装置技术领域。本发明提供一种分动箱,其包括第一主轴、第一齿轮、第二齿轮、第三齿轮、输出轴、第四齿轮、第五齿轮和第二主轴；第一主轴上设有能够随第一主轴转动的第一齿轮；第二齿轮与第一齿轮啮合,第二齿轮向第四齿轮传动,第二齿轮还与第三齿轮啮合；第四齿轮与第五齿轮啮合；第二主轴上设有第一滑套,第二主轴通过第一滑套择一跟随第五齿轮或第一主轴转动；输出轴上设有第二滑套,第二滑套能够使输出轴停转或随第三齿轮转动。本发明还提供一种底盘动力输出装置及一种车辆。与现有技术比较本发明的有益效果在于：该分动箱具有多种传动模式,能兼顾行驶和特种作业的动力供应,还能够间接使发动机节能减排。(The invention relates to the technical field of transmission devices. The invention provides a transfer case, which comprises a first main shaft, a first gear, a second gear, a third gear, an output shaft, a fourth gear, a fifth gear and a second main shaft, wherein the first gear is arranged on the first main shaft; a first gear capable of rotating along with the first main shaft is arranged on the first main shaft; the second gear is meshed with the first gear, the second gear transmits to the fourth gear, and the second gear is also meshed with the third gear; the fourth gear is meshed with the fifth gear; a first sliding sleeve is arranged on the second main shaft, and the second main shaft selects to rotate along with the fifth gear or the first main shaft through the first sliding sleeve; the output shaft is provided with a second sliding sleeve, and the second sliding sleeve can stop the output shaft or rotate along with the third gear. The invention also provides a chassis power output device and a vehicle. Compared with the prior art, the invention has the beneficial effects that: the transfer case has multiple transmission modes, can give consideration to the power supply of running and special operation, and can indirectly enable the engine to save energy and reduce emission.)

1. A transfer case is characterized by comprising a first main shaft, a first gear, a first sliding sleeve, a second gear, a third gear, a second sliding sleeve, an output shaft, a fourth gear, a fifth gear and a second main shaft;

the first main shaft is a power input shaft of the transfer case, and a first gear capable of rotating along with the first main shaft is arranged on the first main shaft;

the second gear is meshed with the first gear, the second gear transmits power to the fourth gear, and the second gear is also meshed with the third gear;

the fourth gear is meshed with the fifth gear;

the second main shaft is provided with the first sliding sleeve, and the second main shaft selects to rotate along with the fifth gear or the first main shaft through the first sliding sleeve;

and a second sliding sleeve is arranged on the output shaft, and the second sliding sleeve can stop the output shaft or rotate along with the third gear.

2. A transfer case according to claim 1 wherein said first primary shaft is geared to said first gear and said first primary shaft and said first gear rotate at the same speed and with the same direction of rotation.

3. A transfer case according to claim 1 wherein said second gear is connected to said fourth gear by a fixed shaft, said second gear and said fourth gear rotating at the same speed and in the same direction.

4. A transfer case according to claim 1 wherein said output shaft is provided with a power take-off at one end; one end of the second main shaft is connected with a flywheel.

5. The transfer case of claim 4 further including a housing, one end of said output shaft being connectable to said third gear by said second sleeve, the other end of said output shaft extending out of said housing, said one end of said output shaft extending out of said housing being provided with a power take-off interface; one end of the second main shaft is selected through the first sliding sleeve to be connected with the first gear or the fifth gear, the other end of the second main shaft extends out of the shell, and one end of the second main shaft extending out of the shell is connected with a flywheel.

6. A transfer case according to claim 4 or claim 5 wherein a speed sensor is provided at each of the flywheel and the power take-off interface.

7. A transfer case according to any one of claims 1 to 5 wherein each of said first and second sleeves is provided with a fork, and pneumatic means moves said forks to control the sliding movement of said first or second sleeves; the first sliding sleeve and the second sliding sleeve are reset through springs respectively.

8. A transfer case according to any one of claims 1-5 wherein said first gear, said third gear and said fifth gear have a first hub assembly, a third hub assembly and a fifth hub assembly respectively disposed thereon, said first sleeve being selectively connectable to said first hub assembly and said fifth hub assembly, said second sleeve being connectable to said third hub assembly; the first sliding sleeve is connected with the first axle center assembly or the fifth axle center assembly through a spline; the second sliding sleeve is connected with the third shaft center assembly through a spline.

9. A chassis power take-off comprising an engine and a gearbox, characterised in that it further comprises a transfer case, a first clutch and a second clutch as claimed in claims 1-8; the first clutch is disposed between the engine and the transfer case; the second clutch is disposed between the transfer case and the transmission case.

10. A vehicle comprising a chassis power take-off as claimed in claim 9.

Technical Field

The invention relates to the technical field of vehicle transmission devices, in particular to a transfer case and a chassis power output device with the transfer case, and further relates to a vehicle with the chassis power output device.

Background

At present, in the market, in order to ensure the effect of road surface operation, traditional operation special-purpose vehicles such as sweeping vehicles, snow removal vehicles, maintenance vehicles and the like mostly adopt double-engine power, a chassis engine drives a rear axle to run through a clutch, a gearbox and a transmission shaft, a secondary engine provides power for loading, and the speed of the chassis engine is generally about 3-10km/h due to lower operation speed, so that the rotating speed of the chassis engine can be in a low-speed high-oil-consumption area for a long time due to low-speed running, and the energy consumption of the vehicle is high and the efficiency is low.

For this reason there are also some vehicles on the market that rely solely on the chassis engine to provide power for both the top loading operation and the chassis travel. The power take-off mode based on the vehicle structure can be generally divided into an engine PTO power take-off mode and a transfer case power take-off mode, and the two power take-off modes have respective advantages and disadvantages, and the respective advantages and disadvantages are as follows:

1. when the power take-off mode is the power take-off of the engine PTO, the power take-off of the engine PTO can directly provide power for the upper part without influencing the normal running and the operation running of the chassis.

However, at the same time, the PTO power take-off mode of the engine has an unsolved problem:

in order to ensure the steady operating power required for the top-loading, the chassis engine needs to be maintained at a high rotational speed. However, when an operation-type vehicle running on an urban street is carelessly operated, the vehicle often stops or walks due to red light or traffic jam, so that the vehicle is often forced to perform starting action under the condition of high rotating speed of an engine, and gear shifting starting is performed under the condition of high rotating speed of the engine, so that impact and abrasion are brought to a clutch, and the vehicle also has a forward rush phenomenon.

In order to overcome the problem caused by starting at a high rotating speed, the vehicle can be started if the rotating speed of the engine is changed from a high speed to a low speed, and then the vehicle is gradually increased to the rated rotating speed after starting when the engine runs at a low rotating speed. Although the mode solves the problems caused by high-speed starting, new disadvantages are introduced, and the disadvantages are that: during the starting period, the output power of the low-rotating-speed engine cannot meet the rotating speed and power requirements of the sweeper, and the sweeper cannot be cleaned completely.

2. When the power take-off mode is power take-off of the transfer case, the engine provides power for the upper part through the transfer case. The power take-off of the transfer case mostly adopts a hydrostatic technology, the transfer case is positioned between the gearbox and the rear axle and is respectively connected with the gearbox and the drive axle through a transmission shaft, and the output speed ratio of the transfer case is 1:1 during non-operation running, namely, the running of the chassis is not influenced. When the transfer case runs in operation, the transfer case is switched to an operation mode, the variable pump drives the traveling motor, and the traveling motor drives the rear axle to run, so that low-speed running and stepless speed change can be realized. Meanwhile, a power take-off port reserved in the transfer case can provide power for the upper part; the chassis engine with the structure can keep constant at high rotating speed, but the structure is complex, the cost is far higher than that of the auxiliary engine, and meanwhile, the effect on energy conservation is not obvious in consideration of low transmission efficiency of a hydraulic system.

In summary, it is necessary and urgent to design a chassis power output apparatus suitable for a work-type special vehicle.

In view of the above-mentioned drawbacks, the inventors of the present invention have finally obtained the present invention through a long period of research and practice.

Disclosure of Invention

In order to solve the technical defects, the invention adopts the technical scheme that the transfer case is characterized by comprising a first main shaft, a first gear, a first sliding sleeve, a second gear, a third gear, a second sliding sleeve, an output shaft, a fourth gear, a fifth gear and a second main shaft;

the first main shaft is a power input shaft of the transfer case, and a first gear capable of rotating along with the first main shaft is arranged on the first main shaft;

the second gear is meshed with the first gear, the second gear transmits power to the fourth gear, and the second gear is also meshed with the third gear;

the fourth gear is meshed with the fifth gear;

the second main shaft is provided with the first sliding sleeve, and the second main shaft selects to rotate along with the fifth gear or the first main shaft through the first sliding sleeve;

and a second sliding sleeve is arranged on the output shaft, and the second sliding sleeve can stop the output shaft or rotate along with the third gear.

Preferably, the first main shaft transmits power to the first gear, and the rotating speed and the rotating direction of the first main shaft and the first gear are the same.

Preferably, the second gear and the fourth gear are connected through a fixed shaft, and the rotating speed and the rotating direction of the second gear and the rotating speed and the rotating direction of the fourth gear are the same.

Preferably, one end of the output shaft is provided with a power take-off interface; one end of the second main shaft is connected with a flywheel.

Preferably, the power take-off device further comprises a housing, one end of the output shaft can be connected with the third gear through the second sliding sleeve, the other end of the output shaft extends out of the housing, and a power take-off interface is arranged at one end of the output shaft extending out of the housing; one end of the second main shaft is selected through the first sliding sleeve to be connected with the first gear or the fifth gear, the other end of the second main shaft extends out of the shell, and one end of the second main shaft extending out of the shell is connected with a flywheel.

Preferably, a rotation speed sensor is respectively arranged at the flywheel and the force taking interface.

Preferably, shifting forks are respectively arranged on the first sliding sleeve and the second sliding sleeve, and a pneumatic device controls the sliding of the first sliding sleeve or the second sliding sleeve by moving the shifting forks; the first sliding sleeve and the second sliding sleeve are reset through springs respectively.

Preferably, a first axial assembly, a third axial assembly and a fifth axial assembly are respectively arranged on the first gear, the third gear and the fifth gear, the first sliding sleeve is selected to be connected with the first axial assembly and the fifth axial assembly, and the second sliding sleeve is connected with the third axial assembly; the first sliding sleeve is connected with the first axle center assembly or the fifth axle center assembly through a spline; the second sliding sleeve is connected with the third shaft center assembly through a spline.

The invention also provides a chassis power output device, which comprises an engine and a gearbox and is characterized by also comprising the transfer case, a first clutch and a second clutch; the first clutch is disposed between the engine and the transfer case; the second clutch is disposed between the transfer case and the transmission case.

The invention also provides a vehicle which is characterized by comprising the chassis power output device.

Compared with the prior art, the invention has the beneficial effects that:

the transfer case provided by the invention has multiple mutually switchable transmission modes, can reasonably distribute the power of the engine, can give consideration to the power supply during vehicle running and special operation, and can enable the engine to always operate in a high-rotation-speed oil-saving state, and the transfer case can indirectly improve the conversion rate of fuel energy.

Drawings

FIG. 1 is a schematic illustration of one transfer mode of the transfer case of embodiment 1 of the present invention;

FIG. 2 is a schematic view of another transfer case transmission mode in embodiment 1 of the present invention;

fig. 3 is a schematic structural view of a chassis power output apparatus in embodiment 1 of the present invention.

Reference numerals:

the power take-off device comprises an engine 1, a first clutch 2, a transfer case 3, a second clutch 4, a gearbox 5, a first main shaft 6, a first gear 7, a first sliding sleeve 8, a second gear 9, a third gear 10, a second sliding sleeve 11, an output shaft 12, a power take-off interface 13, an auxiliary shaft 14, a fourth gear 15, a fifth gear 16, a second main shaft 17 and a flywheel 18.

Detailed Description

The above and further features and advantages of the present invention are described in more detail below with reference to the accompanying drawings.

In the description of the present invention, it is to 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", "axial", "radial", "circumferential", etc., indicate orientations or positional relationships based on those shown in the drawings, and are used merely for convenience of description of the present invention, and do not indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be considered as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two unless specifically defined otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; may be mechanically coupled, may be electrically coupled or may be in communication with each other; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.