Light feeder

New continent a (000571, 5.83, 0.87%) shares in AVIC new continent Aviation Manufacturing Co., Ltd., and its large aircraft engine parts are leap engine parts, which are mainly used for Boeing 737max, Airbus a320neo, C919 and other models

AVIC Technology (600391, 22.20, 0.50%) aircraft manufacturing companies are mainly engaged in the main parts of aero-engine and gas turbine; Participate in the development of some parts of C919 engine

aero engine manufacturers (600893, 27.52, 0.40%) participated in the domestic engine being developed by C919

in the morning of February 18, the concept stocks of engine rose sharply, with the trading limits of three stocks of aeroengine control (000738), aeroengine Technology (600391) and aeroengine power (600893). The shares of Steel Research Gaona (300034) surged by more than 8%, Weifu Gaoke (000581) rose by more than 3%, and Zongshen power (001696), Weichai heavy machinery (000880), furuite equipment (300228) also rose slightly

Gangyan Gaona (300034): Gangyan Gaona achieved a total operating revenue of 680 million in the first half of 2019, with a year-on-year growth of 95.6%; The net profit attributable to the parent company was 86.292 million, a year-on-year increase of more than 86%. During the reporting period, the gross profit rate of the company was 33.1%, increased by 5.2 percentage points year on year, and the net profit rate was 15.6%, increased by 1.5 percentage points year on year

The definition of mutual assistance, as the name suggests, is to help each other, which is actually a Ponzi scheme

in the introction of Ca international financial mutual aid community provided by the participants, the platform claimed that its background originated from French agricultural credit institutions, adopting a new mode of "everyone for me" and "everyone for me" to help each other, with the payment as "help" and the payment as "help". The platform does not collect money, members transfer money to each other, and there is no capital risk

realize the sharing of financial resources and obtain income. The so-called "mutual aid" actually "helps" each other's income. The premise for this mode to continue is that new people constantly join in, and the later Party's principal "helps" the first party to obtain the high interest promised by the platform

this kind of "mutual aid" has been popular in China for a long time, and the most famous one is MMM financial mutual aid platform. At the beginning of this year, 3M completely collapsed, and many people were deeply involved. However, all kinds of imitation disks under the banner of "overseas" and "mutual assistance" are still popular in wechat group

this model fully conforms to the definition of Ponzi scheme: "in short, it is to use the money of new investors to pay interest and short-term return to old investors, so as to create the illusion of making money and then cheat more investment."

the State Administration for Instry and Commerce suggests that the frequent emergence of "nine trillion international" and other network investment platforms under the banner of "financial mutual assistance" and the interweaving characteristics of the Ministry of instry and information technology and pyramid selling have huge risks, and the hierarchical relationship is formed according to the order of joining. According to the relevant regulations, once the capital chain breaks and the amount of rebate is calculated, don't be greedy for illegal profits

the operation mode of "nine trillion international" and similar entities has illegal fund-raising, set up "recommendation Award" and other bonus systems, and many investors participate in it“ "9 trillion international" and similar financial mutual aid platforms have not been approved“ Without the registration of the instry and Commerce Department, the "nine trillion international" and similar financial mutual aid platforms and companies are responsible for themselves

extended data

the risk of mutual aid:

1. Income is positively correlated with risk. The higher the income is, the greater the risk is! The higher the income, the greater the risk! The higher the income, the greater the risk

3. Huzhu naturally carries the gene of MLM, and the development of offline hurts people, money and feelings. If the platform collapses and you lose money, you are offline, and all your offline people come to you for money. It must be hard for you to cross the street

4. No one is in charge now, but no one will be in charge in the future. Servers, registered places and senior executives are usually abroad, which brings a lot of trouble to the filing and investigation. Even if a certain platform is identified as pyramid selling fraud, it is even more difficult to recover

The tension device adopts screw tension type
the tension support adopts section steel and bolt connection structure, with beautiful appearance and convenient assembly and disassembly. For heavy and super heavy tension devices, a set of springs is added to cushion and absorb vibration. In addition, there are the following two characteristics: (1) the screw of the tension device of medium and light plate feeder is located above the sliding seat and under the inverted equilateral angle steel, so that the screw part can not be polluted and damaged; Tension device for heavy and super heavy procts, screw through slide center 2) The tensioning device is divided into two structures: standard type and heavy type, and keeps serialization and generalization with the lower tensioning device of bucket elevator
rolling bearings are mostly used for the head and tail bearings
the head bearing seat is not supported horizontally on the frame, but is vertically connected to the frame with four bolts. On the one hand, it makes the bearing seat stress consistent with the working tension direction, improves the stress condition of the bearing seat and the connecting bolt, on the other hand, it reces the space size
the combined sprocket is used
the material of the driving sprocket is cast iron or steel, and the rim is made of high wear-resistant hardened steel with changeable tooth structure; The gearless edge of the tension sprocket is a combined type, which can be replaced. This can rece a lot of maintenance, rece maintenance costs. In addition, the replaceable gearless flange can ensure the correct and constant contact between the chain and the sprocket, and prevent the tooth surface from scuffing
backup roller wheel
the backup roller wheel of medium and light plate feeder is external type, separated from the traction roller, and has the following advantages: (1) it is easy to set the guide rail groove 2) Rece the wear of traction roller 3) Easy to manufacture. For heavy and super heavy plate feeders, fixed backup rollers are set on the frame. Centralized oil supply mode is adopted for lubrication of roller, head and tail bearing seat to ensure timing and comprehensive lubrication
hydraulic coupling
a hydraulic coupling is installed between the driving motor and the recer, which can ensure the smooth start of the plate feeder and play the role of overload protection. Chain drive is adopted between recer and main shaft, which has buffering effect, stable transmission ratio, high power transmission, adjustable center distance, and easy arrangement and installation. The drive shaft is equipped with a backstop to prevent the reverse rotation of the conveyor. In addition, for example, Yantai Xinhai mining Machinery Co., Ltd. is equipped with automatic metering device on the plate feeder and st removal device at the head and tail, which greatly improves the work efficiency and is widely used. To sum up, although the newly formulated domestic standards are close to the international advanced standards in terms of feed volume, conveyor size, etc., efforts still need to be made to ensure the performance of the whole machine, achieve high efficiency, low energy consumption, high reliability, etc

POC particle oxidation catalyst (POC) = particle oxidation catalyst

different from gasoline vehicles, only a few new diesel vehicles adopt exhaust after treatment technology. Automobile diesel engine manufacturers have been improving the engine and its control system to meet the emission standards

the best effect can be achieved by using diesel lean burn NOx removal catalyst and diesel particulate filter

although this technology already exists, it is very expensive. In most cases, advanced particulate oxidation catalyst POC is used, which is characterized by particulate combustion

has been tested on several light and heavy engines and vehicles driven by this type of engine (engines up to Euro 0 to Euro 4 standards). The biggest advantage of this scheme is that the price is relatively cheap and maintenance is not necessary. But the sulfur content in diesel oil should be low

POC is a catalytic oxidizer for particulate matter. The working principle is to catch up the particulate matter, and then burn it through the high temperature of exhaust gas (250 ℃ - 500 ℃), so as to achieve the purpose of recing the particulate matter. POC is widely used in light truck. In addition, POC can regenerate actively and DPF needs human intervention

particulate oxidation catalytic converter (POC) can be used to rece particulate matter in diesel exhaust, which belongs to the category of oxidation catalytic converter. The conversion efficiency of particulate matter is higher than doc, but lower than DPF system. The principle is to make the exhaust gas pass through a multi fold channel without blocking, and the particles are adsorbed in the POC, and the accumulated particles are removed by oxidation combustion

because POC requires a higher working temperature, it needs to be used in combination with DOC, which is called PM Kat system by European heavy truck enterprise man, that is, DOC and POC are integrated. Under the oxidation of DOC catalyst, no in the exhaust gas combines with oxygen to form nitrogen dioxide, and the original NO2 in the exhaust gas enters the POC together. Under the action of the catalyst, the molecular bond of N O2 breaks at a lower temperature, and the generated o burns with the captured C particles to form C O2, thus effectively removing the captured particles

POC can only filter the larger carbon particles, but the ability to capture the carbon particles below PM2.5 is low, and the efficiency of recing PM is 30% - 80%, which is better than doc and lower than DPF. The price of POC is lower than that of DPF and higher than that of doc

Cubic boron nitride (CBN) tool is used for processing mn18cr2 high manganese steel

mn18cr2 belongs to wear-resistant steel plate and autogenous mill liner plate. The chemical composition of mn18cr2 is as follows:

mn18cr2 after water toughening degaussing belongs to wear-resistant steel plate, which is mainly used for impact resistant components. Mn13, mn13cr2 and mn18cr2 are suitable for large and medium-sized crusher tooth plate, roller wall, crushing wall and large excavator bucket tooth and other strong impact conditions. It can also be used as lining plate of ball mill, semi autogenous mill and autogenous mill

cement instry: impact plate, pipe, pump shell, mill lining, crusher parts, slag chute, various chassis, vibrating screen, etc

electric power instry: ash discharge pipe, silo, fan blade, burner pipeline, conveying tank and hopper lining, crusher parts, coal mill parts, air handling system and conveyor

Coal Instry: mainly used for coal washing and preparation, mining and mineral transportation, truck cargo tank lining, silo lining, conveying tank lining, crusher department, cover plate, wear-resistant rod and wear-resistant plate