CN215360884U

CN215360884U - Working device power unit for power assembly of electric loader

Info

Publication number: CN215360884U
Application number: CN202120791699.3U
Authority: CN
Inventors: 乔征; 崔国敏; 刘艳芳; 张卫东; 曹健榕; 李治江; 王群英
Original assignee: Tianjin Research Institute Of Construction Machinery Co ltd
Current assignee: Tianjin Research Institute Of Construction Machinery Co ltd
Priority date: 2021-04-16
Filing date: 2021-04-16
Publication date: 2021-12-31
Anticipated expiration: 2031-04-16

Abstract

The utility model discloses a working device power unit for a power assembly of an electric loader; the power unit of the working device is arranged on the transfer case of the power case body and comprises a driving motor of the working device and a driving shaft, and the power unit is characterized in that: the driving shaft is installed in the transfer case through a bearing, the driving shaft is connected with a driving motor shaft through a spline, and the other end of the driving shaft is connected with a variable speed pump; a power driving gear is mounted on the driving shaft; a driven shaft for connecting a hydraulic pump of a working device, a steering hydraulic pump and a braking hydraulic pump is arranged above the driven shaft in parallel, and the driven shaft is arranged on the transfer case through a support bearing; and a driven gear meshed with the driving gear is arranged on the driven shaft. The utility model adopts electric energy to replace the traditional hydraulic mechanical transmission, can independently realize the power supply for the loader accessory, improves the adaptability and the transmission efficiency which need to consider the power transmission so as to meet the increasingly strict emission standard and reduce the operation cost.

Description

Working device power unit for power assembly of electric loader

Technical Field

The utility model belongs to the technical field of electric loaders, and particularly relates to a power unit of a working device for a power assembly of an electric loader.

Background

In recent years, various electric vehicle technologies are gradually mature, reliable and especially economic electric vehicle products are consumed year by year, and the market acceptance is very considerable. With the regulation and control upgrading of environmental protection policies, the national requirements on ecological environment protection are higher and higher, and engineering machinery enterprises also need to actively take the actions of energy conservation and emission reduction to finish the industrial upgrading as soon as possible. In particular, in certain specific working environments such as municipal administration, ports and underground operation, zero emission thresholds are provided for engineering machinery to enter fields by related departments.

Electric vehicles have driven core components and technologies such as motors, batteries, electronic control, rapid charging and discharging, and the like to become mature day by day, and the development and application of electric engineering machinery have been a necessary trend.

The loader is used as a general engineering machine and has wide application fields, such as farmland renovation, engineering construction, factories and mines, ports and the like. At present, the main stream loader in China still adopts the traditional internal combustion engine as power, the transmission modes are hydraulic mechanical transmission and hydraulic transmission, and the loader has the defects of poor fuel economy and high pollution emission. The loader using electric energy as energy and the motor as power has the advantages of strong load adaptability, convenient operation, energy conservation and environmental protection.

The existing electric loaders in the market at present mainly have two transmission types, one is that a motor is adopted to replace an engine and is used as power drive; meanwhile, the loader is matched with a traditional hydraulic mechanical transmission speed change mechanism to realize the work of loader accessories, the loader has the advantages of compact structure and low cost, and the defect of low transmission efficiency, and the traditional wheel loader adopts a hydraulic transmission system with a hydraulic torque converter. Although the hydraulic torque converter has good self-adaptability, good starting performance and engine overload protection, and great effects on the operation of a driver and the improvement of productivity; however, the torque converter has a narrow working efficiency area and low transmission efficiency, so that the economical efficiency of the hydraulic mechanical transmission is poor.

Therefore, the utility model provides a power unit of a working device for a power assembly of an electric loader, which replaces the traditional hydraulic mechanical transmission with electric energy, can independently provide power for accessories of the loader, improves the adaptability and the transmission efficiency which need to consider power transmission so as to meet increasingly strict emission standards and reduce the operation cost.

SUMMERY OF THE UTILITY MODEL

Aiming at the problems in the prior art, the utility model provides a working device power unit for a power assembly of an electric loader, which replaces the traditional hydraulic mechanical transmission with electric energy and can independently provide power for accessories of the loader.

The utility model is realized in such a way that a power unit of a working device for a power assembly of an electric loader; the power unit of the working device is arranged on the transfer case of the power case body and comprises a driving motor of the working device and a driving shaft, and the power unit is characterized in that: the driving shaft is installed in the transfer case through a bearing, the driving shaft is connected with a driving motor shaft through a spline, and the other end of the driving shaft is connected with a variable speed pump; a power driving gear is mounted on the driving shaft; a driven shaft for connecting a hydraulic pump of a working device, a steering hydraulic pump and a braking hydraulic pump is arranged above the driving shaft in parallel, and the driven shaft is arranged on the transfer case through a support bearing; and a driven gear meshed with the driving gear is arranged on the driven shaft.

Preferably, two driven shafts are arranged, and the vertical center of the driving shaft is superposed with the center between the two driven shafts.

The driving motor of the working device is formed by connecting a single motor or two driving motors in series.

The utility model has the advantages and positive effects that: compared with the prior art, the utility model replaces the traditional hydraulic mechanical transmission by electric energy, can independently realize the power supply for the loader accessory, improves the adaptability and the transmission efficiency which need to consider the power transmission, meets increasingly strict emission standards and reduces the operation cost. The control of the walking drive is not influenced in the control of the whole vehicle, and the working efficiency and the operation comfort are improved. The utility model is used in cooperation with the electric power walking power unit, so that the cost of the whole machine is effectively reduced, and the competitive advantage of the product is improved. In addition, the utility model has the advantages of simple structure, convenient maintenance, low cost and the like.

Drawings

FIG. 1 is a schematic diagram of an embodiment of the present invention

FIG. 2 is a schematic diagram of an embodiment of the present invention

In the drawing, 1, a power box body; 10. a working device power unit; 20. a transfer case; 30. a variable speed pump; 101. the working device drives the motor; 102. a drive shaft; 103. a bearing; 104. a drive motor shaft; 105. a driving gear; 106. a driven shaft; 107. a support bearing; 108. a driven gear.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail with reference to the following embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the utility model and are not intended to limit the utility model.

Referring to FIG. 1, a work implement power unit for a power assembly of an electric loader; the working device power unit 10 is arranged on the transfer case 20 of the power case body 1 and comprises a working device driving motor 101 and a driving shaft 102, wherein the driving shaft is arranged in the transfer case through a bearing 103, the driving shaft is connected with a driving motor shaft 104 through a spline, and the other end of the driving shaft is connected with a variable speed pump 30; a power driving gear 105 is arranged on the driving shaft; a driven shaft 106 for connecting a hydraulic pump of a working device, a steering hydraulic pump and a braking hydraulic pump is arranged above the driving shaft in parallel, and the driven shaft is arranged on the transfer case through a support bearing 107; the driven shaft is provided with a driven gear 108 engaged with the driving gear.

Preferably, two driven shafts are arranged, and the vertical center of the driving shaft is superposed with the center between the two driven shafts. The hydraulic control system is used for meeting the use requirements of different vehicles, such as a hydraulic pump of a working device and a steering hydraulic pump connected with each driven shaft, and can also be connected with the steering hydraulic pump and simultaneously connected with a brake hydraulic pump in series.

The driving motor of the working device can be a single motor according to the actual power requirement; or a structure that two driving motors with low power are connected in series can be adopted.

Compared with the prior art, the utility model replaces the traditional hydraulic mechanical transmission by electric energy, can independently realize the power supply for the loader accessory, improves the adaptability and the transmission efficiency which need to consider the power transmission, meets increasingly strict emission standards and reduces the operation cost. The utility model is used in cooperation with the electric power walking power unit, so that the cost of the whole machine is effectively reduced, and the competitive advantage of the product is improved. The motor has a wider stepless speed regulation range and higher transmission efficiency, and the motor and the two-gear power shift transmission are integrated into a power assembly, so that the requirements of traction force and vehicle speed of the loader can be met according to the working characteristics of the loader. Meanwhile, the power assembly can meet the independent driving of a hydraulic pump and a steering pump of the working device, so that the loader can obtain the best working performance, and the working efficiency is improved.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the utility model, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.

Claims

1. A working device power unit for a power assembly of an electric loader; the power unit of the working device is arranged on the transfer case at the middle part of the power case body and comprises a driving motor of the working device and a driving shaft, and the power unit of the working device is characterized in that: the driving shaft is installed in the transfer case through a bearing, the driving shaft is connected with a driving motor shaft through a spline, and the other end of the driving shaft is connected with a variable speed pump; a power driving gear is mounted on the driving shaft; a driven shaft for connecting a hydraulic pump of a working device, a steering hydraulic pump and a braking hydraulic pump is arranged above the driving shaft in parallel, and the driven shaft is arranged on the transfer case through a support bearing; and a driven gear meshed with the driving gear is arranged on the driven shaft.

2. The work implement power unit for an electric loader power pack as defined in claim 1, further comprising: two driven shafts are arranged, and the vertical center of the driving shaft coincides with the center between the two driven shafts.

3. The work implement power unit for an electric loader power pack as defined in claim 1, further comprising: the driving motor of the working device is formed by connecting a single motor or two driving motors in series.