working principle of roadheader
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working principle of roadheader

Roadheader – A comprehensive review - ScienceDirect

2020-1-1  Such a technique that defines the constructional quality of making a mould for a specific purpose is referred to as a constructing principle for roadheader design. Rostamiet al., 1994 , Rostamiet al., 1994 developed a computer program for roadheader design optimization and performance prediction, and used it to check a heavy-duty roadheader of ...

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ROADHEADER IN TUNNELING

2016-9-27  PARAMETER FOR ROADHEADER CUTTABILITY HOW TO ASSESS SPC. 16 0,001 0,010 0,100 1,000 10,000 0 10 20 30 40 50 60 70 80 90 100 110 120 130 140 150 160 170 180 Specific Pick Consumption [picks/solid m³] Uniaxial Compressive Strength [MPa] Specific Pick Consumption (SPC) for Low Speed Cutting with Transverse Cutterhead and 22 mm TC

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Machines Free Full-Text Adaptive Cutting Control for ...

From the working principle and working process of roadheader as shown in Figure 2, the cutting performance is related to the swing speed and rotation speed of the cutting head. Therefore, it is necessary to establish the relationship between the speed of the hydraulic cylinder and the swing speed of the cutting head, as well as the influence of ...

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Tunnel Boring Machines (TBM) – Roadheaders (TSM)

Tunnel boring machines are full-face cutting machines, which means that, unlike road headers, they excavate the entire tunnel cross-section in one step. TSM: Roadheaders belong to the category of peripheral milling machines due to their design. Since today's road headers work with cutting heads, these machines are also called cutting head machines.

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Research on Boom-Type Roadheader Vibration Testing

This develops the roadheader vibration characteristics test system according to the structural characteristics and working principle of the cantilevered roadheader.

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(PDF) Roadheader applications in mining and tunneling

The roadheader is a machine for excavating rock in mining and civil construction projects. It is a hybrid machine, with better manoeuvrability than that of tunnel

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基于相似理论的掘进机主动激振截割性能研究

2020-11-30  Firstly, based on the working principle and dynamics theory of the roadheader experimental prototype, the modal simulation analysis for the experimental prototype was carried out by using the ANSYS Workbench software, and the modal test was carried out

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掘进机电液双控系统的研究

2019-5-22  Combining with the phenomenon of on-site fault, the working principle and the principle of each component of the electro-hydraulic double control system of roadheader are analyzed. And the troubleshooting and in-depth study are carried out.

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有变频器的低压供电系统漏电闭锁技术

2021-11-2  working principle of the three-phase asynchronous motor, takes the roadheader as an example to deeply study the duration of the back-EMF generated by its instantaneous power failure, which provides a delay reference for the leakage lockout technology in the

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2011工程机械与车辆工程新进展国际学术会议论文集_百度百科

编辑 语音. 《2011工程机械与车辆工程新进展国际学术会议论文集》内容简介:The 2011 International Conference on Advances in Construction Machinery and Vehicle Engineering (ICACMVE'2011)is one of the academic conferences originated by Chinese Construction Machinery Society(CCMS), and it was organized by Tongji ...

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(PDF) Adaptive Cutting Control for Roadheaders Based on ...

2021-2-24  Working Principle of Roadheader The front of the cantilever is the cutting head, which is driven by the motor to ro tate the cutting head for crushi ng coal and rock, and the back part is ...

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ROADHEADER IN TUNNELING

2016-9-27  PARAMETER FOR ROADHEADER CUTTABILITY HOW TO ASSESS SPC. 16 0,001 0,010 0,100 1,000 10,000 0 10 20 30 40 50 60 70 80 90 100 110 120 130 140 150 160 170 180 Specific Pick Consumption [picks/solid m³] Uniaxial Compressive Strength [MPa] Specific Pick Consumption (SPC) for Low Speed Cutting with Transverse Cutterhead and 22 mm TC

More

Tunnel Boring Machines (TBM) – Roadheaders (TSM)

Tunnel boring machines are full-face cutting machines, which means that, unlike road headers, they excavate the entire tunnel cross-section in one step. TSM: Roadheaders belong to the category of peripheral milling machines due to their design. Since today's road headers work with cutting heads, these machines are also called cutting head machines.

More

Machines Free Full-Text Adaptive Cutting Control for ...

From the working principle and working process of roadheader as shown in Figure 2, the cutting performance is related to the swing speed and rotation speed of the cutting head. Therefore, it is necessary to establish the relationship between the speed of the hydraulic cylinder and the swing speed of the cutting head, as well as the influence of ...

More

Machines Free Full-Text Adaptive Cutting Control for ...

2021-2-4  Aiming at addressing the problems of high specific energy consumption for cutting and slow response to the change of hardness in the control of existing mining roadheaders, an adaptive variable speed cutting control method based on cutting performance optimization is proposed by analyzing the working principle of roadheaders. Firstly, cylinder pressure and

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Multi-sensor fusion method for roadheader pose detection ...

2021-12-1  Based on the principle of relative motion, when the roadheader deviates from the original pose, the laser spots on the sensors shift in the opposite direction correspondingly. The distance that the laser spot moves (i.e. the coordinate of the laser spot measured by photoelectric sensor) depends on the pose and position deviation of the ...

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Research on Boom-Type Roadheader Vibration Testing

This develops the roadheader vibration characteristics test system according to the structural characteristics and working principle of the cantilevered roadheader. Using the piezoelectric acceleration sensor detects vibration signal, and passing

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Adaptive Cutting Control for Roadheaders Based on ...

2021-2-24  Adaptive Cutting Control for Roadheaders Based on Performance Optimization. Machines Pub Date : 2021-02-24 , DOI: 10.3390/machines9030046. Qingyun Liu, Chao Lu, Tao Liu, Zhangbao Xu. Aiming at addressing the problems of high specific energy consumption for cutting and slow response to the change of hardness in the control of existing mining ...

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Roadheader - Type AM 50

2022-1-5  The ALPINE MINER AM 50 is a boom-type roadheader designed to cut medium-hard rock with an unconfined compressive strength of up to 90 MPa (800 kp/cm 2). The machine can, however, also take thin seams of harder materials in its stride should these be encountered in a working face. This means that the AM 50 can cut most rock with economic efficiency.

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基于激光靶向扫描的掘进机位姿测量方法

薛光辉,张云飞,候称心,等.基于激光靶向扫描的掘进机位姿测量方法[J].煤炭科学技术,2020,48(11):19-25.

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ROADHEADER IN TUNNELING

2016-9-27  PARAMETER FOR ROADHEADER CUTTABILITY HOW TO ASSESS SPC. 16 0,001 0,010 0,100 1,000 10,000 0 10 20 30 40 50 60 70 80 90 100 110 120 130 140 150 160 170 180 Specific Pick Consumption [picks/solid m³] Uniaxial Compressive Strength [MPa] Specific Pick Consumption (SPC) for Low Speed Cutting with Transverse Cutterhead and 22 mm TC

More

(PDF) Adaptive Cutting Control for Roadheaders Based on ...

2021-2-24  Working Principle of Roadheader The front of the cantilever is the cutting head, which is driven by the motor to ro tate the cutting head for crushi ng coal and rock, and the back part is ...

More

Multi-sensor fusion method for roadheader pose detection ...

2021-12-1  Based on the principle of relative motion, when the roadheader deviates from the original pose, the laser spots on the sensors shift in the opposite direction correspondingly. The distance that the laser spot moves (i.e. the coordinate of the laser spot measured by photoelectric sensor) depends on the pose and position deviation of the ...

More

Intelligent optimal control considering dynamic posture ...

where t is the working time of cantilever roadheader. q ${}_{i}$ and Q ${}_{i }$ represent the generalized velocity and displacement of system (i=1,2,3 n). T, V, and D are the total kinetic energy, potential energy, and dissipation function of system, respectively.

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Shaft Boring Roadheader (SBR) - Herrenknecht AG

The Shaft Boring Roadheader (SBR) was developed for the mechanized sinking of blind shafts in soft to medium-hard rock with up to 120 MPa. For the efficient excavation of the rock, the SBR has been equipped with a roadheader boom and a rotating cutting drum. This allows the creation of variable shaft diameters between 7 and 12 meters.

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Research on course angle accuracy of roadheader based

Abstract: In order to realize the high precision and autonomous measurement of the roadheader,a laser position and attitude measurement system based on laser measurement technology is established to study the accuracy of the course angle of the

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Roadheader - Type AM 50

2022-1-5  The ALPINE MINER AM 50 is a boom-type roadheader designed to cut medium-hard rock with an unconfined compressive strength of up to 90 MPa (800 kp/cm 2). The machine can, however, also take thin seams of harder materials in its stride should these be encountered in a working face. This means that the AM 50 can cut most rock with economic efficiency.

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Miao Wu's research works China University of Mining and ...

Miao Wu's 64 research works with 107 citations and 1,551 reads, including: Health Diagnosis of Roadheader Based on Reference Manifold Learning and Improved K-Means

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中国液压协会

Abstract: Taking the A2FE125 motor of roadheader as the research object, the working principle of BVD balance valve is analyzed emphatically. The results are verified by experiments and compared with each other, which provides reference for further optimization design.

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SCI最新收录本校论文查询-中国矿业大学图书馆 - China ...

2022-1-4  SCI最新收录本校论文查询. A new method that combines spectral indexes and Naive Bayes to distinguish heavy metal pollution in crops. Title: A new method that combines spectral indexes and Naive Bayes to distinguish heavy metal pollution in crops Author (s): Li, Yanru; Yang, Keming; Han, Qianqian; et al. Source: REMOTE SENSING LETTERS ...

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