Development of auto loading device in bearing positioning lip stamping

Abstract With the continuous development of our economy, the types and quantity of engine bearing are increasing. In order to prevent the bearing moving in the bearing pedestal, one or both ends of the bearing need to make positioning lip for axial positioning. In order to meet the needs of mass bearing production, an auto loading device for positioning lip of bearing is proposed in this paper. The horizontal conveyor belt and loading guide are used to make the blank turn to the required angle, and then the double cylinder valve and push rod motor are used to realize the time-sharing conveying and continuous loading of the blank. During the loading process, there are inclined slideway and blocking plate to avoid the collision between blanks and ensure the reliable loading bearings. Through the actual production verification, the developed device has the advantages of simple structure, low cost, fine working stability, and made great improving in the efficiency and safety for production of bearing.

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Numerical simulation on coal loading process of shearer drum based on discrete element method

Energy Exploration & Exploitation ◽

10.1177/01445987211013536 ◽

2021 ◽

pp. 014459872110135

Author(s):

Zhen Tian ◽

Shuangxi Jing ◽

Lijuan Zhao ◽

Wei Liu ◽

Shan Gao

Keyword(s):

Numerical Simulation ◽

Discrete Element Method ◽

Loading Rate ◽

Low Cost ◽

Element Model ◽

Discrete Element ◽

Helix Angle ◽

Loading Process ◽

Coal Particles ◽

Element Method

The drum is the working mechanism of the coal shearer, and the coal loading performance of the drum is very important for the efficient and safe production of coal mine. In order to study the coal loading performance of the shearer drum, a discrete element model of coupling the drum and coal wall was established by combining the results of the coal property determination and the discrete element method. The movement of coal particles and the mass distribution in different areas were obtained, and the coal particle velocity and coal loading rate were analyzed under the conditions of different helix angles, rotation speeds, traction speeds and cutting depths. The results show that with the increase of helix angle, the coal loading first increases and then decreases; with the increase of cutting depth and traction speed, the coal loading rate decreases; the increase of rotation speed can improve the coal loading performance of drum to a certain extent. The research results show that the discrete element numerical simulation can accurately reflect the coal loading process of the shearer drum, which provides a more convenient, fast and low-cost method for the structural design of shearer drum and the improvement of coal loading performance.

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Investigation of serial coherent laser beam combination based on Brillouin amplification

Laser and Particle Beams ◽

10.1017/s0263034607070127 ◽

2007 ◽

Vol 25 (1) ◽

pp. 79-83 ◽

Cited By ~ 22

Author(s):

SHUANGYI WANG ◽

ZHIWEI LÜ ◽

DIANYANG LIN ◽

LEI DING ◽

DONGBIN JIANG

Keyword(s):

Laser Beam ◽

High Power ◽

Simple Structure ◽

Low Cost ◽

Coupling Efficiency ◽

Laser Beams ◽

Beam Combination ◽

Multiple Beams ◽

Combination Scheme ◽

Stokes Beam

Based on transferring energy from multiple pump beams into one Stokes beam using Brillouin amplification, a serial coherent laser beam combination scheme is presented, which has many advantages, such as, simple structure, low cost, ease of adjustment, higher load capability, scalable easily, etc. Furthermore, it has been demonstrated that the combination of several beams using this method is theoretically possible. But in practice, the amplification of high power Stokes beam is a key problem to solve. In this paper, the amplification of Stokes beam whose power is higher than the pump beam is first studied and proved experimentally. Coupling the two laser beams by this method is proved experimentally, and the coupling efficiency reaches more than 80%. Then the feasibility of multiple beams combination based on Brillouin amplification is analyzed and tested theoretically.

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Compact Triple/Quadruple-Band Reconfigurable Monopole Antenna for Wireless Applications

Journal of Circuits System and Computers ◽

10.1142/s0218126621502777 ◽

2021 ◽

pp. 2150277

Author(s):

Asmaa Zugari ◽

Wael Abd Ellatif Ali ◽

Mohammad Ahmad Salamin ◽

El Mokhtar Hamham

Keyword(s):

Simple Structure ◽

Low Cost ◽

Ground Plane ◽

Monopole Antenna ◽

Pin Diode ◽

Wireless Applications ◽

Rectangular Patch ◽

Antenna Performance ◽

Compact Size ◽

Multi Band

In this paper, a compact reconfigurable tri-band/quad-band monopole antenna is presented. To achieve the multi-band behavior, two right-angled triangles were etched in a conventional rectangular patch, and a partial ground plane is used. Moreover, the proposed multi-band antenna is printed on a low cost FR4 epoxy with compact dimensions of 0.23[Formula: see text], where [Formula: see text] is calculated at the lowest resonance frequency. To provide frequency agility, a metal strip which acts as PIN diode was embedded in the frame of the modified patch. The tri-band/quad-band antenna performance in terms of reflection coefficient, radiation patterns, peak gain and efficiency was studied. The measured results are consistent with the simulated results for both cases. The simple structure and the compact size of the proposed antenna could make it a good candidate for multi-band wireless applications.

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Multi-Target Detection Method Based on Variable Carrier Frequency Chirp Sequence

Sensors ◽

10.3390/s18103386 ◽

2018 ◽

Vol 18 (10) ◽

pp. 3386 ◽

Cited By ~ 6

Author(s):

Wei Wang ◽

Jinsong Du ◽

Jie Gao

Keyword(s):

Intelligent Transportation Systems ◽

Simple Structure ◽

Low Cost ◽

Doppler Frequency ◽

Transportation Systems ◽

Practical Application ◽

Frequency Aliasing ◽

Application Requirements ◽

Relationship Of ◽

Cw Radar

Continuous waveform (CW) radar is widely used in intelligent transportation systems, vehicle assisted driving, and other fields because of its simple structure, low cost and high integration. There are several waveforms which have been developed in the last years. The chirp sequence waveform has the ability to extract the range and velocity parameters of multiple targets. However, conventional chirp sequence waveforms suffer from the Doppler ambiguity problem. This paper proposes a new waveform that follows the practical application requirements, high precision requirements, and low system complexity requirements. The new waveform consists of two chirp sequences, which are intertwined to each other. Each chirp signal has the same frequency modulation, the same bandwidth and the same chirp duration. The carrier frequencies are different and there is a frequency shift which is large enough to ensure that the Doppler frequencies for the same moving target are different. According to the sign and numerical relationship of the Doppler frequencies (possibly frequency aliasing), the Doppler frequency ambiguity problem is solved in eight cases. Theoretical analysis and simulation results verify that the new radar waveform is capable of measuring range and radial velocity simultaneously and unambiguously, with high accuracy and resolution even in multi-target situations.

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Application of Alber's principle to develop a device supporting wheelchair in stair climbing

Science and Technology Development Journal ◽

10.32508/stdj.v16i2.1505 ◽

2013 ◽

Vol 16 (2) ◽

pp. 5-12

Author(s):

Nghin Van Dang ◽

Co Pham ◽

Thong Hoang Pham ◽

Phuc Dang Ho

Keyword(s):

Simple Structure ◽

Low Cost ◽

Total Weight ◽

Stair Climbing ◽

Disabled People ◽

And Control ◽

Climbing Stairs

This paper presents developing Alber principle for machine supporting wheelchair in climbing stairs. The designed machine can support wheelchair and disabled people with total weight 80 kg climb up and down most of stairs and with speed 10-15 stairs per minute. Moving wheelchair and disabled people need assistant person who will hold handle and control the machine. The machine is designed with a simple structure, manufactured with low cost and simple controlling. Therefore the machine can be upgraded and manufactured in future.

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Technology almost 4.0 application in developing a conveyor belt with low-cost, reused and accessible materials for bagging grains

International Journal for Innovation Education and Research ◽

10.31686/ijier.vol7.iss11.2005 ◽

2019 ◽

Vol 7 (11) ◽

pp. 1322-1329

Author(s):

Cleber Amorim ◽

Lúcia Adriana Villas-Bôas ◽

Flávio José de Oliveira Morais ◽

Paulo Sérgio Barbosa Dos Santos ◽

Douglas Cardozo De Almeida ◽

...

Keyword(s):

Technological Development ◽

Low Cost ◽

Conveyor Belt ◽

New Class

With the technological development of a new class of wastes, the technological ones were created. Many times, this waste is not processed correctly, having its hazardous disposal. Thus, recycling these materials is an alternative to end specific equipment. This work used this approach to develop a low-cost, affordable second-row conveyor belt. The conveyor belt was designed to bag, weigh, and monitor different volumes in a grain silo. Such equipment is of interest to smallholder applications as well as the integration between different areas of the Biosystems engineering course.

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Design of Intelligent Winding Machine for Tassel Thread Based on Stepping Motor

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.189.317 ◽

2012 ◽

Vol 189 ◽

pp. 317-320

Author(s):

Hong Shen ◽

Feng Shao ◽

Jun Peng Xu

Keyword(s):

Simple Structure ◽

Intelligent System ◽

Rotation Speed ◽

High Reliability ◽

Low Cost ◽

Production Quality ◽

Stepping Motor ◽

Precise Control ◽

Winding Machine ◽

Thread Problem

On account of the end splitting and dropping thread problem for domestic winding machine during tassel thread production process at present, an intelligent system with subdivision driving module TB6560AHQ and SANYO stepping motor was designed, which adopted the ATMEL89S52 MCU as the core controller. The system achieved precise control of some parameters during the course of tassel thread winding such as torque, direction of rotation, speed, cycle laps, twist, etc. It also reduced the worker’s labour intensity and improved the production quality and efficiency of the tassel manufacturing, moreover, this winding machine has the advantages of simple structure, high torque, high reliability and low cost. It can meet the various control requirements for different tassel thread winding and have a considerable market prospect.

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A Miniaturized 878 MHz Slotted Meander Line Monopole Antenna

Indonesian Journal of Electrical Engineering and Computer Science ◽

10.11591/ijeecs.v7.i1.pp170-177 ◽

2017 ◽

Vol 7 (1) ◽

pp. 170

Author(s):

Nabilah Ripin ◽

Ahmad Asari Sulaiman ◽

Nur Emileen Abd Rashid ◽

Mohamad Fahmi Hussin ◽

Nor Najwa Ismail

Keyword(s):

Simple Structure ◽

Low Cost ◽

Low Frequency ◽

Monopole Antenna ◽

Impedance Bandwidth ◽

Antenna Size ◽

Printed Monopole Antenna ◽

Printed Monopole ◽

Small Antenna ◽

Meander Line

A slotted meander line printed monopole antenna for low frequency applications at 878 MHz is presented. The operating frequency of the conventional printed monopole antenna was greatly reduced by the presence of the slots and meander line which lead to the reduction of the antenna size. The size reduction up to 70% compared to the conventional reference antenna is achieved in this study. The antenna has a simple structure and small antenna size of 46.8 mm x 74 mm or 0.137𝝀0 x 0.217𝝀0. The antenna has been fabricated on the low-cost FR4 substrate and measured to validate the simulation performances. Measured results display that the proposed antenna produces omnidirectional radiation pattern of impedance bandwidth of 48.83 MHz and the maximum gain of -1.18 dBi.

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Low Cost Solar Tracker with High Efficiency in PV Generating System

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.577.546 ◽

2014 ◽

Vol 577 ◽

pp. 546-550

Author(s):

Min Tang ◽

Jing Wang ◽

Jin Ming Yang

Keyword(s):

Output Signal ◽

Simple Structure ◽

High Efficiency ◽

Low Cost ◽

Solar Tracker ◽

Uv Sensors ◽

Generating System

This paper describes a low cost solar tracker with high efficiency in PV generating system. The detecting device adopts two ultraviolet (UV) sensors to detect the sun’s position. The output of detecting device is a series of combination signals. And this output signal is directly used to control DC motor’s deflection to sun. No microcontroller is adopted in this design. The simple structure makes this solar tracker reliable and easy implementation.

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