Electromechanical-hydraulic composite type main drive system of tunnel boring machine

A tunnel boring machine and composite technology, applied in the field of mechanical equipment, can solve the problems of lagging of auxiliary mechanical transmission devices, inability to fully utilize motor power, increase volume, etc., and achieve a large power-to-weight ratio, convenient layout, and long life. Effect

Inactive Publication Date: 2013-04-03
DALIAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When this kind of reducer is actually working, the motor is running at low load, and the power of the motor cannot be fully utilized.
Chinese patent document CN 101769155A proposes a dual-drive planetary variable speed transmission system for shield machines, which has the characteristics of double input and single output, and is composed of an input differential structure and an output closed structure. Although the rated power of the motor is guaranteed and problems such as escape, However, the auxiliary mechanical transmission device added in the traditional form has problems such as hysteresis, impact, complex structure, and increased volume.

Method used

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  • Electromechanical-hydraulic composite type main drive system of tunnel boring machine
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  • Electromechanical-hydraulic composite type main drive system of tunnel boring machine

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Experimental program
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Effect test

Embodiment approach 1

[0026] In the present invention, one hydraulic motor is selected for each reducer, the brake 8 is in the closed state, the hydraulic motor 7 brakes, the power input component motor 1 transmits power to the input stage sun gear 4, and the input stage sun gear 4 drives the input stage planet meshed with it 6, the input stage planetary gear 6 undergoes self-propagation and revolution, and transmits power to the input stage planetary carrier 42, and the input stage planetary carrier 42 is used as the input of the intermediate stage of the planetary gear pair to drive the intermediate stage sun gear 38 to rotate, and the intermediate stage sun gear The wheel shaft 38 transmits power to the intermediate planetary gear 36 and realizes power splitting. The intermediate planetary gear 36 drives the intermediate planetary carrier 33 to rotate, realizes power confluence and transmits the power to the output-stage sun gear shaft 30 through a spline connection, and the output-stage sun gear ...

Embodiment approach 2

[0028] The brake 8 is in the disengaged state, the hydraulic motor 7 of the power input component drives the input external gear 17 to rotate, transmits the power to the input stage ring gear 15, and drives the input stage planet carrier 42 to rotate through the input stage planetary gear 6, and is connected with the power input component motor 1. The transmitted power confluence output, multiple reducers 54 of the main drive system of the electromechanical-hydraulic composite tunnel boring machine jointly drive the cutter head 56. At this time, the output power is large and the torque is large, which is suitable for the tunnel boring machine when the external soil and rock resistance moment is sudden. Increase or collapse the working conditions to achieve escape.

Embodiment approach 3

[0030] Such as Figure 5 As shown, the transmission and output structure of the tunnel boring machine reducer adopts the first-stage differential + NGWN planetary gear train structure, the input-stage planet carrier 42 drives the second-stage sun gear 43, the second stage adopts a planetary gear pair, and the second stage The first-stage planet carrier 45 is coaxial with the third-stage sun gear 47, and drives the third-stage planetary gear 48 to rotate, and the third-stage planetary wheel 48 rotates on a fixed axis, and finally the output shaft 44 is driven by the double gear 46 to output power.

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Abstract

The invention adopts a motor and hydraulic motor dual-input differential structure and a two-stage planetary gear pair transmission output mechanism by aiming at the defect of the traditional drive system of the tunnel boring machine. An electromechanical-hydraulic composite type main drive system comprises a power device, a variable-speed transmission system and a power input mechanism, wherein the power device is a dual-input power device and comprises a power input assembly motor and a power input assembly hydraulic motor, and an output end of the hydraulic motor is provided with a braking device. For the power input of the drive system, a manner of motor and hydraulic motor dual-drive differential input is adopted, and two output working conditions can be obtained by changing the drive manners of the motor and the hydraulic motor, so that the tunnel boring machine can be guaranteed in normal work and can be guaranteed to get out of troubles; and compared with a mechanical transmission manner, the hydraulic motor is rapid and stable in driving, can acquire large torque more easily, and further has the advantages of small size, high power-weight ratio, convenience for layout, long service life and the like.

Description

technical field [0001] The invention relates to the field of mechanical equipment, in particular to a main driving system of a tunnel boring machine. Background technique [0002] Tunnel boring machine is the main construction machine in tunnel excavation construction. Because tunnel excavation construction has the advantages of safety, reliability, small environmental impact, low labor intensity and high efficiency, it is widely used in urban rail, water conservancy, municipal engineering, mines, highways, railway tunnels, etc. The field of application is very wide. Since the tunnel boring machine is often constructed in a complex and harsh working environment, the drive and transmission system of the tunnel boring machine are required to be able to withstand heavy loads and large impacts, and to have high power, low speed and high torque output, etc. function; and these requirements have relatively high requirements for the material, manufacturing and processing of the tr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16H3/72E21D9/08
Inventor 魏静涂文平孙伟王庆国丁鑫
Owner DALIAN UNIV OF TECH
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