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A kind of tandem twin-screw conveying device and its conveying method

A technology of conveying device and double-screw machine, which is applied in the field of shield machine, can solve the problems of difficult maintenance and poor adaptability, and achieve the effects of good applicability, easy maintenance and improved utilization rate

Active Publication Date: 2021-09-24
CHINA RAILWAY ENGINEERING EQUIPMENT GROUP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In view of the deficiencies in the above-mentioned background technology, the present invention proposes a conveying method of a tandem twin-screw conveying device, which solves the problems of poor adaptability and difficult maintenance of shield machine screw conveyers in the prior art

Method used

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  • A kind of tandem twin-screw conveying device and its conveying method
  • A kind of tandem twin-screw conveying device and its conveying method
  • A kind of tandem twin-screw conveying device and its conveying method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Example 1, such as figure 1 , 3 , Shown in 4, a kind of tandem twin-screw conveying device, comprises the primary screw conveyor and the secondary screw conveyor connected in series, the front end of the primary screw conveyor stretches into the soil bin of the shield machine, the secondary screw conveyor The screw conveyor is airtightly connected with the primary screw conveyor. The first-stage screw conveyor includes a first-stage telescopic barrel section 3, and the first-stage telescopic barrel section 3 adopts a telescopic screw conveyor barrel section whose length can be changed. A shaftless screw shaft 2 is arranged in the first-stage telescopic cylinder section 3, and the shaftless screw shaft is a helical shaft, which can be used to transport larger pebbles or rock blocks. The rear part of the cylinder wall of the first-stage telescopic cylinder section 3 is provided with double slag discharge doors 7 and 8. The inner equipment belt conveyor 18 and double sl...

Embodiment 2

[0028] Example 2, such as figure 1 As shown, a tandem twin-screw conveying device, the secondary screw barrel section 11 is arranged horizontally, the trailer 20 is provided with a secondary telescopic mechanism 15 and an auxiliary support 13, the auxiliary support is used for the primary screw conveyor and When the secondary screw conveyor is separated or docked, it supports the secondary screw barrel section, and the secondary screw barrel energy-saving moves relative to the auxiliary support. connect. The secondary telescopic mechanism 15 can adopt a telescopic oil cylinder assembly, the fixed end of the secondary telescopic mechanism is fixedly connected with the trailer, the telescopic end of the secondary telescopic mechanism 15 is fixedly provided with a main support 14, and the main support 14 is connected with the secondary screw barrel section 11 Fixed connection. Under the action of the secondary telescopic mechanism 15, the main support drives the secondary screw...

Embodiment 3

[0032] Embodiment 3, a kind of conveying method of tandem twin-screw conveying device, comprises the following steps:

[0033] S1: Debug the first-stage screw conveyor and the second-stage screw conveyor to the normal state; in the early installation, first connect the front end of the first-stage screw conveyor to the shield body, and support the first-stage screw conveyor on the assembly machine through the supporting mechanism ;Secondly, the secondary screw conveyor is supported on the No. 1 trailer through the supporting mechanism, and then the secondary screw conveyor is adjusted to be connected with the primary screw conveyor through the auxiliary support of the secondary screw conveyor;

[0034] S2: When excavating in an area with low water pressure, the first-stage screw conveyor starts and the second-stage screw conveyor stops. Open the double slag door 7 of the first-stage screw conveyor and close the slag door at the tail of the first-stage screw conveyor. 8. Since ...

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Abstract

The invention discloses a tandem twin-screw machine conveying device and a conveying method thereof, which solve the problems of poor adaptability and difficult maintenance of the shield machine screw conveyer. The invention includes a first-stage screw conveyor and a second-stage screw conveyor connected in series, the first-stage screw conveyor includes a first-stage telescopic cylinder section, a shaftless screw shaft is arranged inside the first-stage telescopic cylinder section, and a first-stage telescopic cylinder section There are double slag discharge doors and slag discharge doors on the cylinder wall; the secondary screw conveyor includes a secondary screw barrel section, a composite rotating shaft is arranged inside the secondary screw barrel section, and the secondary screw barrel section The lower slag door at the front and the lower slag door at the rear are arranged on the wall of the cylinder, the lower slag door at the front corresponds to the equipment belt conveyor, and the lower slag door at the rear corresponds to the continuous belt conveyor. The invention can be used in strata with high buried depth, high water pressure, and large-sized pebbles, can realize high-water-pressure mode excavation, solve the problem of large-sized pebbles under high water pressure, and use double-screw conveyors to obtain shield tunneling Machine construction cost is low and construction efficiency is high.

Description

technical field [0001] The invention relates to the technical field of shield machines, in particular to a tandem twin-screw machine conveying device and a conveying method thereof. Background technique [0002] At present, underground spaces such as subway tunnels, water diversion tunnels, and river-crossing tunnels are developing rapidly at home and abroad. Due to the influence of geographical location and surrounding environment, some tunnels are in geological conditions with high buried depth, high water pressure, and large-sized pebbles. Traditional manual excavation cannot be carried out, and safety cannot be guaranteed, so shield tunneling method construction is imperative. At present, in non-full-section hard rock formations, earth pressure balance shield machines and mud-water balance shield machines are often used for shield tunneling construction. Conventional earth pressure balance shield machines use shaftless screw conveyors, which can discharge Pebbles with l...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21D9/12E21D9/06
CPCE21D9/06E21D9/124
Inventor 叶蕾周罘鑫郝凛然王杜娟郑康泰贺开伟李少辉赵茜卫宸瑜庞培彦高文梁袁文征张家年王宇
Owner CHINA RAILWAY ENGINEERING EQUIPMENT GROUP CO LTD