阅读说明：本技术 适应工程机械低速作业与汽车高速行驶的多模式复合行走系统 (Multi-mode composite traveling system suitable for low-speed operation of engineering machinery and high-speed traveling of automobile ) 是由 王勇 王丹 刘珂 俞汉生 付晓锋 于 2019-09-23 设计创作，主要内容包括：本发明公开了适应工程机械低速作业与汽车高速行驶的多模式复合行走系统,本发明包括一发动机,复合行走变速箱体,与箱体相连的液压泵和液压马达,液压泵与液压马达之间通过液压油管相连,与箱体通过从动轴相连的前后桥及车轮,前桥带有驱动脱开离合器,满足前桥转向不驱动的汽车行驶要求,整个复合行走变速箱体及相连的液压泵和液压马达共同组成低速工程机械与高速汽车的多模式复合行走系统。本发明以低速工程机械行走系统为主,通过行走系统切换,变速齿轮切换,使低速工程机械行走系统满足高速汽车行走系统的速度要求,具备高速汽车行走系统的特性,能够适应大范围长距离快速机动转场作业要求,提高特殊工作环境下的作业效率。(The invention discloses a multi-mode composite traveling system suitable for low-speed operation of engineering machinery and high-speed running of an automobile, which comprises an engine, a composite traveling gearbox body, a hydraulic pump and a hydraulic motor, wherein the hydraulic pump and the hydraulic motor are connected with the gearbox body, the hydraulic pump and the hydraulic motor are connected with each other through hydraulic oil pipes, a front axle, a rear axle and wheels are connected with the gearbox body through driven shafts, the front axle is provided with a drive disengaging clutch, the traveling requirement of the automobile that the front axle is not driven when being steered is met, and the whole composite traveling gearbox body, the hydraulic pump and the hydraulic motor which are connected with the whole composite traveling gearbox body form the multi-mode composite. The low-speed engineering machinery traveling system is mainly used, and meets the speed requirement of a high-speed automobile traveling system through traveling system switching and speed change gear switching, has the characteristics of the high-speed automobile traveling system, can meet the requirement of large-range long-distance quick maneuvering transition operation, and improves the operation efficiency under special working environments.)

1. The multi-mode composite traveling system suitable for low-speed operation of engineering machinery and high-speed running of an automobile comprises an engine (2), a composite traveling gearbox body, a hydraulic pump (10) and a hydraulic motor (12) which are connected with the gearbox body, the hybrid walking gearbox is characterized in that a power output shaft (20), a driven shaft (21), a driven shaft (22) and a driven shaft (23) are assembled in the hybrid walking gearbox body, the front end of an engine (2) is connected with the power output shaft (20) in the hybrid walking gearbox body through a flange, a gear (3), a clutch (4), a hydraulic torque converter (6), a clutch (7) and a gear (9) are assembled on the power output shaft (20), a gear (5) and a clutch (8) are assembled on the driven shaft (21), the gear (5) on the driven shaft (21) is meshed with the gear (3) on the power output shaft (20) and connected with a hydraulic pump (10) through a flange, and the front end of the driven shaft (21) is connected with the hydraulic.

2. The multi-mode composite traveling system suitable for low-speed operation of engineering machinery and high-speed running of an automobile according to claim 1 is characterized in that a transmission gear (14), a gear (18) and a clutch (19) are assembled on a driven shaft (23), the gear (18) on the driven shaft (23) is meshed with a gear (9) on a power output shaft (20) and connected with a hydraulic motor (12) through a flange, a hydraulic pump (10) and the hydraulic motor (12) are connected through a hydraulic oil conveying pipe (11), the gear (15), the gear (16) and the clutch (17) are assembled on the driven shaft (22), a front axle and wheels (13) are connected to the front end of the driven shaft (22), and a rear axle and wheels (1) are connected to the rear end of the driven shaft (22).

Technical Field

The invention belongs to a special traveling system technical route for special engineering machinery, and particularly relates to a multi-mode composite traveling system in the fields of high-speed automobiles and low-speed engineering machinery.

Background

The walking system of the existing engineering machinery is characterized in that: the hydraulic transmission or hydraulic transmission is adopted, the transmission ratio is low, the maximum running speed of a running system is about 40km/h, the running condition on the road on a common road is not met, and the existing engineering machinery cannot meet the running speed requirement of road vehicles due to low running speed per se when the engineering machinery is used for large-range long-distance transition operation, and needs to be transported by means of a flat transport vehicle.

The existing automobile traveling system has the characteristics that: mechanical transmission or hydraulic transmission is adopted, the transmission ratio is high, the maximum running speed of a running system is over 80km/h, the running system has the running condition on the road on a common road, and large-range long-distance motor running can be carried out.

Disclosure of Invention

the invention aims to provide a multi-mode composite traveling system capable of simultaneously meeting the traveling system of a low-speed engineering machine and the traveling system of a high-speed automobile.

The invention comprises an engine, a compound walking speed changing box body, a hydraulic pump and a hydraulic motor which are connected with the box body, wherein the hydraulic pump and the hydraulic motor are connected through a hydraulic oil pipe, a front axle and a rear axle which are connected with the box body through a driven shaft and wheels are arranged on the front axle, the front axle is provided with a drive disengaging clutch, the running requirement of a vehicle which is not driven by the steering of the front axle is met, and the whole compound walking speed changing box body, the hydraulic pump and the hydraulic motor which are connected form a multi-mode compound walking system of low-speed engineering machinery and a.

The technical scheme of the invention is realized as follows: the compound walking gearbox comprises an engine, a compound walking gearbox body, a hydraulic pump and a hydraulic motor, wherein the hydraulic pump and the hydraulic motor are connected with the gearbox body, a power output shaft, a driven shaft, the driven shaft and the driven shaft are assembled in the compound walking gearbox body, the front end of the engine is connected with the power output shaft in the compound walking gearbox body through a flange, a gear, a clutch, a hydraulic torque converter, a clutch and a gear are assembled on the power output shaft, the gear and the clutch are assembled on the driven shaft, the gear on the driven shaft is meshed with the gear on the power output shaft and is connected with the hydraulic pump through the flange.

The driven shaft is provided with a speed change gear, a gear and a clutch, the gear on the driven shaft is meshed with the gear on the power output shaft and connected with a hydraulic motor through a flange, the hydraulic pump is connected with the hydraulic motor through a hydraulic oil delivery pipe, the gear and the clutch are arranged on the driven shaft, the front end of the driven shaft is connected with a front axle and wheels, and the rear end of the driven shaft is connected with a rear axle and wheels.

By adopting the structure and the technical scheme, the running speed requirements of the low-speed engineering machinery and the high-speed automobile in two fields can be realized, when the low-speed engineering machinery works, the engine is directly connected with the hydraulic pump through the conversion action among the multiple groups of gears and the multiple groups of clutches in the composite walking gearbox body, the hydraulic pump is connected with the hydraulic motor through the hydraulic oil pipe, and the hydraulic motor is connected to the front axle and the rear axle which are connected with the driven shaft and the wheels through the conversion action among the multiple groups of gears and the multiple groups of clutches, so that the low-speed working running function of the engineering machinery is realized; when the high-speed automobile is used, the engine is connected to the front axle, the rear axle and the wheels which are connected with the driven shaft through the change gear and the front axle drive disengaging clutch in the gearbox body by the conversion action among a plurality of groups of gears and a plurality of groups of clutches in the composite traveling gearbox body and the direct connection function of the locking hydraulic torque converter, so that the high-speed traveling function of the automobile is realized.

Drawings

Fig. 1 is a schematic perspective view of the overall layout of the present invention.

FIG. 2 is a schematic diagram of a transmission route of the walking power of the construction machine during low-speed operation running.

FIG. 3 is a schematic diagram of the transmission route of the walking power of the automobile in high-speed running.

FIG. 4 is a schematic diagram of the transmission path of the present invention for satisfying both the low-speed operation of the construction machine and the high-speed operation of the vehicle.

The present invention will be described in further detail with reference to the accompanying drawings.

Detailed Description

Referring to fig. 1 and 4, the present invention comprises an engine 2, a compound traveling gearbox, a hydraulic pump 10 and a hydraulic motor 12 connected with the gearbox, wherein a power output shaft 20, a driven shaft 21, a driven shaft 22 and a driven shaft 23 are assembled in the compound traveling gearbox; the front end of the engine 2 is connected with a power output shaft 20 in the compound traveling gearbox body through a flange, and the power output shaft 20 is provided with a gear 3, a clutch 4, a hydraulic torque converter 6, a clutch 7 and a gear 9; a gear 5 and a clutch 8 are assembled on the driven shaft 21, the gear 5 on the driven shaft 21 is meshed with the gear 3 on the power output shaft 20, and the front end of the driven shaft 21 is connected with the hydraulic pump 10 through a flange; a speed change gear 14, a gear 18 and a clutch 19 are assembled on the driven shaft 23, the gear 18 on the driven shaft 23 is meshed with the gear 9 on the power output shaft 20, the front end of the driven shaft 23 is connected with the hydraulic motor 12 through a flange, and the hydraulic pump 10 is connected with the hydraulic motor 12 through a hydraulic oil delivery pipe 11; the driven shaft 22 is provided with a gear 15, a gear 16 and a clutch 17, the front end of the driven shaft 22 is connected with a front axle and wheels 13, and the rear end is connected with a rear axle and wheels 1.

The engineering machinery runs at low speed and the automobile runs at high speed, and the working processes of the two running modes are as follows:

Referring to fig. 1 and 2, the construction machine travels at a low speed:

Before starting the engine 2, the clutch 4 and the clutch 7 are disconnected, the clutch 8 and the clutch 19 are closed, the engine 2 is started, the power output shaft 20 only has the gear 3 to rotate to transmit power, the power is transmitted to the driven shaft 21 through the gear 5 which is in meshed connection, the driven shaft 21 transmits the power to the hydraulic pump 10 through the closed clutch 8, the hydraulic pump 10 transmits the power to the hydraulic motor 12 through the oil delivery pipe 11, the hydraulic motor 12 transmits the power to the driven shaft 23 through the closed clutch 19, the speed change gear 14 on the driven shaft 23 and the gear 18 rotate simultaneously to transmit the power, the gear 9 which is in meshed connection with the gear 18 is always in an idle state and does not transmit the power because the clutch 7 is disconnected, the speed change gear 14 on the driven shaft 23 transmits the power to the driven shaft 22 through the gear 15 or the gear 16 which is in meshed connection, and the driven shaft 22 transmits the power to a front axle and, The rear axle and the wheels 1 meet the low-speed operation running requirement of the engineering machinery.

Whether the clutch 17 is opened or closed before the engine 2 is started is determined by the operator himself, four-wheel drive, clutch 17 closed, two-wheel drive, clutch 17 open.

The working mode is a hydraulic transmission mode of the engineering machinery in a general sense, and the operation running speed does not exceed 40 km/h.

referring to fig. 1 and 3, the automobile runs at a high speed:

before starting the engine 2, the clutch 8, the clutch 19 and the clutch 17 are disconnected, the clutch 4 and the clutch 7 are closed, the engine 2 is started, the power output shaft 20 rotates to transmit power, the gear 3, the clutch 4, the lockup torque converter 6 and the clutch 7 drive the gear 9 to transmit power, the gear 5 meshed and connected with the gear 3 is always in an idle running state and does not transmit power because the clutch 8 is disconnected, the gear 9 transmits power to the driven shaft 23 through the gear 18 meshed and connected with the gear 9, the driven shaft 23 and the hydraulic motor 12 are in a disconnected state because the clutch 19 is disconnected, the change gear 14 on the driven shaft 23 transmits power to the driven shaft 22 through the gear 15 or the gear 16 meshed and connected with the gear 16, and the driven shaft 22 only transmits power to a rear axle and wheels 1 of the engineering machine because the clutch 17 is disconnected and does not transmit power to the front axle and wheels 13 any more, the industrial standard requirements of front axle steering non-driving and rear axle driving of the automobile in high-speed running are met.

The working mode is a mechanical transmission mode or a hydraulic mechanical transmission mode for high-speed running of the automobile in the general sense, the running speed of a highway exceeds 80km/h, and the highway enters the field of automobiles.

The working process of the composite traveling system which simultaneously meets the requirements of low-speed operation traveling of the engineering machinery and high-speed traveling of the automobile is as follows:

Referring to fig. 1 and 4, before starting the engine 2, the clutch 17 is opened, the clutch 4, the clutch 7, the clutch 8 and the clutch 19 are closed, the engine 2 is started, the power output shaft 20 rotates to transmit power, the gear 3, the clutch 4, the torque converter 6 and the clutch 7 are closed to drive the gear 9 to transmit power, the gear 3 transmits power to the driven shaft 21 through the gear 5 which is engaged and connected because the clutch 8 is closed, the driven shaft 21 transmits power to the hydraulic pump 10 through the clutch 8 which is closed, the hydraulic pump 10 transmits power to the hydraulic motor 12 through the oil pipeline 11, the hydraulic motor 12 transmits power to the driven shaft 23 through the clutch 19 which is closed, hydraulic power transmission is achieved, and meanwhile, the gear 9 on the power output shaft 20 transmits power to the driven shaft 23 through the gear 18 which is engaged and connected, the distribution proportion of the hydraulic mechanical composite transmission power is determined by an engineering mechanical complete machine control system according to the working condition, the hydraulic transmission power and the mechanical hydraulic transmission power are simultaneously absorbed by the driven shaft 23 according to the distribution calculated by the control system to form the mechanical hydraulic composite transmission power, the composite transmission power is transmitted to the driven shaft 22 through a speed change gear 14 on the driven shaft 23 through a gear 15 or a gear 16 which are connected in a meshing manner, and the driven shaft 22 only transmits the mechanical hydraulic composite transmission power to a rear axle and wheels 1 of the engineering machine because a clutch 17 is disconnected, so that the power is not transmitted to a front axle and wheels 13 any more, the high-speed running of an automobile is met, and the low-speed working requirement of the engineering machine is met.

In any driving state, the clutch 8 and the clutch 19 are simultaneously engaged, the clutch 4 and the clutch 7 are simultaneously engaged, and are simultaneously opened and closed.