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133results about How to "Not easy to cause loss" patented technology

Transformer station equipment cloud maintenance system and monitoring system

The invention relates to a transformer station equipment cloud maintenance system and a monitoring system. The cloud maintenance system comprises a transformer station monitoring subsystem and a remote maintenance subsystem, wherein the transformer station monitoring subsystem comprises a monitoring layer and an evaluation layer, the monitoring layer is used for monitoring the relevant state information of transformer station equipment and outputting the state information to a server of the evaluation layer to acquire health status data of the transformer station equipment, and the remote maintenance subsystem comprises a cloud maintenance work station in remote communication connection with the evaluation server through the network and is used for receiving the health status data of the transformer station equipment sent by the evaluation server. The system is stored with all the operation state information of the whole far-end transmission transformer station, the health status data of the transformer station equipment is acquired through far-end transmission, the data is not scattered data, data bulk is relatively small, so loss of the data does not easily occur, and the cloud maintenance work station further does not misjudge the operation state of the transformer station.
Owner:XJ ELECTRIC +2

Data model construction method and device, computer equipment and storage medium

The invention relates to a data model construction method and device, computer equipment and a storage medium. The method comprises the steps of obtaining original data of different service types, andextracting target data corresponding to a preset data type from the original data; adding corresponding service type identification information and data level identification information to the targetdata; determining a database corresponding to each piece of target data according to the data type of each piece of target data, and storing the target data and the corresponding service type identification information and data level identification information into the corresponding database; and constructing a data model according to the databases, the target data stored in the databases and theservice type identification information and the data level identification information corresponding to the target data. According to the method, the data model is constructed based on the model construction technology, the purpose of clearly and intensively displaying the service data related to the service type is achieved, service data missing is not likely to be caused, and the integrity of the service data is improved.
Owner:PING AN TRUST CO LTD

Communication system and method for maritime rescue equipment

The invention belongs to the technical field of maritime communication and in particular to a communication system and method for maritime rescue equipment. The system includes a UAV fleet composed of UAV individuals connected via optical cables. One of the UAV individuals is used as a main UAV used for sending a motion control instruction to UAV individuals in the UAV fleet, and obtaining search-and-rescue information from the UAV individuals. The main UAV is further used for acquiring search-and-rescue information of other UAV fleets by electromagnetic induction. During maritime rescue, search and rescue at sea can be quickly carried out just by putting the UAV individuals at a marine site where search and rescue is required in units of UAV fleets. Thus, the efficiency of maritime search and rescue is improved and the losing probability of rescue equipment is reduced.
Owner:SOUTH UNIVERSITY OF SCIENCE AND TECHNOLOGY OF CHINA

Pretreatment apparatus and method for determination of dissolved helium and neon in water

The invention discloses a pretreatment apparatus and method for determination of dissolved helium and neon in water. The apparatus comprises a low vacuum water sample degassing part, a high vacuum helium-neon purifying part and a detection part which are successively connected, wherein the low vacuum water sample degassing part comprises a sample bottle, a degassing bottle and a de-watering pit, the high vacuum helium-neon purifying part comprises a sample storage tank, an active carbon pit and a high vacuum member, the active carbon pit and the sample storage tank are placed in liquid nitrogen under low temperature condition for purifying other gaseous components except He and Ne in separated gas, the high vacuum member comprises a valve and a vacuum pump and is capable of creating vacuum conditions for isotope mass spectrometry, and the detection part is connected with the high vacuum helium-neon purifying part and used for determining the contents of helium and neon in the purified separated gas and the composition of isotopes of helium and neon. The apparatus can successively complete water sample degassing, purification of separated gas and detection of the contents and isotope ratios of helium and neon at one time and produces more accurate metering and determination results.
Owner:CHINA PETROLEUM & CHEM CORP +1

Potato detoxicatubg planting potato asepsis circulating germplasm preserving method

The present invention relates to a potato detoxified sprout sterile circulation germ plasm preservation method. Said method includes the following steps: using existent tuber tip tissue culture technique to obtain detoxified sprout, utilizing induction process to obtain test tube miniature potato, and it is characterized by that placing said test tube miniature potato into a culture vessel, making low-temperature preservation for 200-360 days at 3-5deg.C, then taking out said test tube miniature potato, under the condition of that the temperature is 20-25deg.C and illumination is 2000-4000 lux making culture for 40-60 days to obtain sterile sprout, under the condition of that temperature is 18-20deg.C culturing said sterile sprout for 60-80 days to obtain miniature potato, repeating above-mentioned operation so as to implement the detoxified potato sprout circulation germ plasm preservation.
Owner:YUNNAN AGRICULTURAL UNIVERSITY

Mobile terminal operation method and mobile terminal

The invention provides a mobile terminal operation method and a mobile terminal. The method comprises the steps of receiving a screen lightening signal input by a user to lighten a screen; obtaining a preset operation record when it is detected the preset operation record is in a to-be-executed state; executing corresponding operation according to the preset operation record. By means of the mobile terminal operation method, a mobile phone can be more intelligent, and user experience is improved.
Owner:SHENZHEN TINNO WIRELESS TECH

Self-absorption crude oil sampler of piston type

The invention discloses a self-absorption crude oil sampler of a piston type, comprising a cylinder body (9), a cylinder cover (8), a cylinder bottom (2), a piston (3), a handspike (4) and a valve (1). The cylinder cover (8) and the cylinder bottom (2) are respectively and fixedly connected at the upper end and the lower end of the cylinder body (9); a static seal is formed between the cylinder bottom (2) and the cylinder body (9); the handspike (4) penetrates through an opening in the center of the cylinder cover (8); the piston (3) is pushed to slide up and down along the longitudinal axis of the cylinder body (9); a sliding seal is formed between the piston (3) and the inner wall of the cylinder body (9); and the valve (1) is connected to the cylinder bottom (2) and used as the entry of a sampled oil product. In the invention, the piston is pushed by pressure in a crude oil pipeline to move upwards and finish sampling without using the power driving of pumps, motors, and the like, and the structure is simplified. Meanwhile, because of simple structural part and good sealing performance, the loss of light component substances in crude oil or the evaporation of volatile substances are avoided, and the components of the sampled oil product are surely and truly reflected.
Owner:BEIJING XINGDA TECH DEV

Route managing system and method

The present invention relates to route information management system and method. Said system includes software list tree unit, tree table searching unit, TCAM list unit and TCAM table searching unit; wherein tree table searching unit reviewing software tree and feeding back the reviewed result to TCAM table searching unit, TCAM table searching unit reviewing TCAM list, comparing with table searching result of tree table searching unit, and determining route action message. The present invention also provides route information management method. Said invention provides an effective route solution scheme, only using less TCAM resource, to make software tree construction supporting VPN service and no route lose.
Owner:HUAWEI TECH CO LTD

Data processing method and device

The invention provides a data processing method and device. The method comprises the following steps of receiving an access request of a reading application, wherein the reading application comprisesa news application and / or an information sharing application; determining whether the device for sending the access request is a new device, wherein the new device is a device accessing the reading type application less than N accumulated times, and N is a positive integer which is greater than or equal to 1; when the device sending the access request is the new device, acquiring the user characteristics corresponding to the device identifier of the new device, wherein the user characteristic is the related information related to the reading preference of a user who uses the new device; extracting the message characteristic of the message to be pushed in the reading application; matching the message characteristic with the user characteristic; and pushing a message matched with the user characteristic in the message to be pushed to the new device.
Owner:TENCENT TECH (BEIJING) CO LTD

Floating bed catalytic ozonation reactor and method therewith for treating waste water

The invention relates to a floating bed catalytic ozonation reactor and a method therewith for treating waste water. A floating catalyst bed assembly is installed in the reactor and is formed by an upper fixing frame, a lower fixing frame and a hanging rope. A porous annular plate is arranged on the hanging rope. One end of a flexible floating catalyst is fixed on the porous annular plate. A water distributing device is arranged above the reactor and is used for uniformly distributing waste water to all parts. An air inlet pipe and a water distributor are arranged under the reactor and are used for uniformly diffusing gas. In the invention, by means of the light-weight flexible fiber-like catalyst arranged on the floating bed, the catalyst is uniformly distributed in the space of the reactor, and with disturbance of ozone bubbles, the reactor is improved in gas-solid-liquid mass transfer efficiency and ozone utilization rate, is reduced in system resistance, and can decompose and mineralize refractory organic substances in waste water effectively.
Owner:HARBIN INST OF TECH AT WEIHAI

Programmable storage system

The invention discloses a programmable storage system. The programmable storage system comprises a programmable storage unit, a bit line controlling unit and a word line controlling unit, wherein the programmable storage unit comprises a first switch module, a first anti-fuse module, a second switch module and a second anti-fuse module; the first switch module and the first anti-fuse module are connected in parallel between a power connection end and a public output end; the second switch module and the second anti-fuse module are connected in parallel between the public output end and a protective end; the power connection end, the first switch module and the second switch module are also connected with the word line controlling unit; the protective end is also connected with the bit line controlling unit; the high impedance of the first anti-fuse module and the high impedance of the second anti-fuse module are changed into low impedances after programming voltages are loaded in the first anti-fuse module and the second anti-fuse module. According to the technical scheme disclosed by the invention, the technical problem in an incomplete programmable storage unit in the prior art is solved.
Owner:SHENZHEN STATE MICROELECTRONICS CO LTD

Elastic press mechanism applied to photovoltaic batteries soldered in series

The invention discloses an elastic press mechanism applied to photovoltaic batteries soldered in series. The elastic press mechanism is characterized in that when entering a soldering zone, a battery piece is pressed by a press device (1), the elastic press mechanism (4) presses downwards, and is propped against four press blocks until metal wires (5) on the elastic press mechanism (4) presses the battery piece; when the soldering is completed, the press device (1) is lifted, the elastic press mechanism (4) is lifted automatically under the elastic force of a spring support frame (6); the elastic press mechanism (4) is composed of a fixing frame, a locking spring (3) and a plurality of metal wires (5) in parallel; a battery piece soldering strip is pressed by the metal wires (5) when the elastic press mechanism (4) presses; a majority of a pressing force is buffered by the elastic force of the locking spring (5) after the metal wires (5) are in contact with the battery piece.
Owner:WUXI AUTOWELL TECH

Scenic spot navigation system

The invention discloses a scenic spot navigation system, which comprises at least one electronic tag arranged at each sightseeing point and a scenic spot navigation instrument. The electronic tag comprises sightseeing point location information and a unique identification code. The scenic spot navigation instrument comprises a reading-writing module, which is used for reading and writing the information of the electronic tag; a central processing module, which acquires the sightseeing point information of a scenic spot through the information of the electronic tag read by the reading-writing module; a data storage module, which stores the sightseeing point information corresponding to the unique identification code of the electronic tag one to one; and a display module, which displays the sightseeing point information.
Owner:WUXI MEIWANG NETWORK INFORMATION TECH

Catalyzed synthesis method for anisole

The invention discloses a preparation method of anisole. The preparation method of the anisole comprises the steps of carrying out etherification reaction on phenol and dimethyl carbonate under the effect of a self-made catalyst; recycling methanol generated in a reaction process and the unreacted dimethyl carbonate by fractionation; after reaction is finished, separating and recycling a catalyst;and rectifying a coarse product to obtain an anisole product. By the process, the phenol can be transformed completely, the yield of the anisole reaches 99% or above, and the content of the anisole reaches up to 99.5% or above. The provided method has the environmentally friendly excellent characteristics of small toxicity of reaction raw materials, gentle reaction conditions, simple and speedy process, less waste water, waste gas and solid wastes and the like, and thus is suitable for industrial large-scale production.
Owner:阜新汉道化工有限责任公司

Bottle blowing machine bed die locking mechanism

A bottle blowing machine bed die locking mechanism comprises a baseboard and a bed die rivet provided with positioning grooves, the baseboard is provided with a turning block and locking blocks, and the turning block drives the locking blocks to be clamped in the positioning grooves in order to lock the bed die rivet. The bottle blowing machine bed die locking mechanism realizes locking through the cooperative fixation of the locking blocks and the bed die rivet, so the mechanism has a very simple structure; components are large and solid blocky structures have a good wear resistance and service durability, difficulty cause the loss, so it is in favor of prolonging the service life and reducing the cost; and the arrangement of the components on the baseboard not in the mechanism is convenient to maintain and replace the components, so the maintainability is improved, and the maintenance difficulty is reduced, thereby it is in favor of the normal use of a bottle blowing machine.
Owner:GUANGZHOU TECH LONG PACKAGING MACHINERY CO LTD

Tagetes erecta particles production method capable of increasing xanthophyll content

The invention discloses a tagetes erecta particles production method capable of increasing xanthophyll content, which belongs to the field of natural pigment processing. According to the method, the picked fresh tagetes erecta is subjected to two-time fermentation by using a lactic acid bacteria diluent, physical extruding, drying and dehydrating, and water cooling, and then the material is subjected to crushing granulation under inert gas protection to obtain the tagetes erecta particles. A plate and frame filter as well as membrane filtration are used in order for re-covering residual tagetes erecta and xanthophyll in waste water after physical extruding, and the xanthophyll content during tagetes erecta processing is increased. The xanthophyll content in the produced tagetes erecta particles is high, and the waste water can be better processed.
Owner:晨光生物科技集团莎车有限公司

Pretreatment method and detecting method for detecting total arsenic content of milk beverage

The invention relates to a pretreatment method for detecting the total arsenic content of a milk beverage. The pretreatment method comprises the following steps of: taking the milk beverage; adding protein precipitator and water; filtering after precipitating completely; adding a thiourea solution and 36 percent by mass of muriatic acid into the filtrate so as to obtain the liquid to be detected. The invention also provides a detecting method using the pretreatment method. The detecting method comprises the following steps that: the milk beverage is made into the liquid to be detected by using the pretreatment method; super pure water is made into blank liquid to be detected also by using the pretreatment method; the liquid to be detected and the blank liquid to be detected are detected by using an atomic fluorophotometer; and the total arsenic content in the liquid is obtained by using an external standard method, so as to calculate and obtain the total arsenic content of the milk beverage. According to the method provided by the invention, substances such as protein and fat in the milk beverage are eliminated through the pretreatment method, the five arsenic in the sample is converted into three arsenic, the total arsenic content in the liquid to be detected is detected by using the atomic fluorophotometer, and the total arsenic content of the milk beverage is obtained through calculation. The detecting method is simple and rapid to operate, and the total arsenic content of the milk beverage can be effectively detected.
Owner:INNER MONGOLIA MENGNIU DAIRY IND (GRP) CO LTD

Scenic spot navigation instrument

The invention discloses a scenic spot navigation system, which comprises at least one electronic tag arranged at each sightseeing point and a scenic spot navigation instrument. The electronic tag comprises sightseeing point location information and a unique identification code. The scenic spot navigation instrument comprises a reading-writing module, which is used for reading and writing the information of the electronic tag; a central processing module, which acquires the sightseeing point information of the scenic spot through the information of the electronic tag read by the reading-writing module; a data storage module, which stores the sightseeing information corresponding to the unique identification code of the electronic tag one to one; and a display module, which displays the information of the sightseeing point.
Owner:WUXI MEIWANG NETWORK INFORMATION TECH

Method for preparing 1,2-cyclohexan-diol and n-amyl alcohol from light-oil of cyclohexanone by-product as raw material

The method for preparing 1,2-resorcitol and n-amyl alcohol by using cyclohexanone by-product light oil includes: making the said light oil implement hydration reaction in the presence of inorganic acid, reaction temp. is 30-100 deg.c and reaction time is 0.5-5 hr., and converting the epoxy cyclohexane in the light oil into 1,2-resorcitol; utilizing distillation to distil the n-amyl alcohol contained in the tight oil out, and making rectification to obtain the n-amyl alcohol product whose purity is higher than 99%, then making the bottom residue undergo the conventional processes of removing oil, concentration and recrystallization to obtain solid 1,2-resorcitol product whose purity is higher than 99%.
Owner:杨政

Rice cooker and cover body assembly applied to rice cooker

The invention provides a rice cooker and a cover body assembly applied to the rice cooker. The rice cooker comprises a cooker body provided with an accommodating cavity, an inner pot detachably sitting in the accommodating cavity, a cover body placed on the upper side of the cooker body and capable of covering the cooker body in a covering state, and a detachable cover component detachably connected with the cover body, wherein the detachable cover component covers the inner pot so as to define a cooking space therebetween when the cover body covers the cooker body; a steam generation device with a steam generation outlet is arranged on the cooker body. Furthermore, the rice cooker comprises a steam channel component for forming a steam channel, the steam channel comprises a first steam channel, one end of the first steam channel is communicated with the steam generation outlet, and the other end of the first steam channel is communicated with the cooking space; the steam channel component comprises a lower shell body, and the lower shell body is arranged on the detachable cover component, can be detached along with the detachable cover component and can be mounted on the cover body along with the detachable cover component. According to the rice cooker provided by the invention, the steam channel can be conveniently detached to wash and assembled, and meanwhile, the loss of components can be avoided.
Owner:ZHEJIANG SUPOR ELECTRICAL APPLIANCES MFG CO LTD

Bus interface patch board and data transmission system

The invention provides a bus interface patch board and a data transmission system. The bus interface patch board comprises a bus interface connector and a universal serial bus (USB) interface. The bus interface connector comprises n connecting wires; one ends of the n connecting wires are respectively connected with corresponding n pins in a bus interface, wherein n is a positive integer. The USB interface comprises m data lines. One ends of the m data lines are respectively connected with corresponding m data lines in USB equipment, wherein m is a positive integer and is less than n; the other ends of the m data lines in the USB interface are respectively connected with the other ends of m connecting wires in the n connecting wires of the bus interface connector. The bus interface patch board provided by the invention is of an integrated overall structure, so that when testing is performed on the bus interface through the USB equipment, a circuit does not need to be constructed temporarily, and therefore, the use is convenient, the connecting stability is higher, the testing efficiency can be improved, and the testing stability and accuracy are ensured.
Owner:이노피데이인코포레이티드 +1

Production process of quick-frozen waxy corn zongzi

The invention discloses a production process of quick-frozen waxy corn zongzi, which can solve the problem of loss of water-soluble nutrient substances due to too long soaking time in the process of producing the waxy corn zongzi from dry waxy corn seeds. The waxy corn zongzi is produced by wrapping stuffing into a zongzi shape with reed leaves and further performing steam-boiling, wherein the stuffing is mainly of quick-frozen waxy corn grit in the particle size of 2-5mm. The production process of the waxy corn zongzi comprises the following steps of: (1) quickly unfreezing the quick-frozen waxy corn grit, and air-drying water on the surface; (2) wrapping the stuffing into the zongzi shape; and (3) placing the well wrapped zongzi into a jacketed pan, steaming for 30-50 minutes at the temperature of 100-120 DEG C, taking out of the pan, and soaking in water for cooling. The waxy corn zongzi produced by the production process disclosed by the invention has the advantages of abundant nutrient substances, no preservatives, and good health care effect. The production process of the zongzi, disclosed by the invention, is simple in process, short in making time, low in cost and less prone to loss of the water-soluble nutrient substances.
Owner:DALIAN CHUANGDA TECH TRADE MARKET

HFC-125 synthesis catalyst and preparation method thereof

The invention discloses a HFC-125 synthesis catalyst, which is multi-element hydrotalcite. The chemical formula of the catalyst is [M<2+><1-x>M<3+><x>(OH)2]<x+>(A<n-><x / n>).mH2O, wherein M<2+> and M<3+> represent a divalent metal ion and a trivalent metal ion respectively, A<n-> represents an negative ion, and x represents the mole ratio of M<3+> to (M<2+> + M<3+>). The prepared catalyst is applied to gas phase fluorination between HCFC-123 and HCFC-124 to synthesize 2,3,3,3-tetrafluoropropylene HCFC-125 and has the advantages that the active component cannot be lost easily, the catalytic performance is good, and the selectivity is high.
Owner:QUZHOU UNIV +1

Batch type photocatalytic energy collection reactor and method for wastewater treatment by same

The invention relates to a photocatalytic reactor and a method for wastewater treatment by the photocatalytic reactor, in particular to a batch type photocatalytic energy collection reactor and a method for wastewater treatment by the batch type photocatalytic energy collection reactor and aims to solve the problem of low photocatalytic organism degradation efficiency of existing photocatalytic wastewater treatment methods. The reactor comprises a shell, an anode chamber, a cathode chamber, a proton exchange membrane, a photoanode, guartz glass, a stirring device, a counter electrode, a capacitor and a converter. The proton exchange membrane is arranged in the middle of the shell, the shell is provided with the photoanode at one end of the anode chamber and provided with the counter electrode at one end of the cathode chamber, and the photoanode and the counter electrode are connected through an external circuit. The method includes: feeding wastewater into the reactor through a water inlet of the anode chamber, starting the stirring device, subjecting the photoanode to ultraviolet irradiation, and discharging the treated water through a water inlet hole of the anode chamber. The batch type photocatalytic energy collection reactor and the method for wastewater treatment by the batch type photocatalytic energy collection reactor are applied to the field of wastewater treatment, improve efficiency in separation of photogenerated holes and electrons and effectively and synchronously improve system production capacity and efficiency in degradation and mineralization of refractory organics in wastewater.
Owner:HARBIN INST OF TECH

High calorific value environment-friendly alcohol-based fuel, preparation method and application thereof

The invention provides a high calorific value environment-friendly alcohol-based fuel, which is prepared from the following raw materials by weight: 40-70 parts of alcohol-based fuel; 10-20 parts of anovel calixarene combustion improver; 0.5-4.5 parts of a cosolvent; 2-7 parts of an oxygen producer; 1-5 parts of a stabilizer; 0.1-0.5 part of Tween; and 1-2 parts of triethanolamine. The novel calixarene combustion improver is prepared according to the method of: in a four-mouth bottle equipped with a stirrer, a nitrogen protection device, a thermometer and a water segregator, adding p-methoxyphenol, paraformaldehyde, a sodium hydroxide solution, naphthalene and a solvent xylene, introducing nitrogen for protection, conducting oil bath heating to reflux, carrying out reaction for 4h, performing cooling to room temperature, conducting filtering, and washing the filter cake with toluene, petroleum ether, acetone and water respectively in order, performing drying, then performing dissolving in chloroform, conducting heating concentration, carrying out cooling to room temperature, and performing filtering to obtain yellow powder. Compared with refined methanol fuel or ethanol fuel, thehigh calorific value environment-friendly alcohol-based fuel prepared according to the invention has wide source, low cost, and higher calorific value, does not generate toxic gas during combustion, and is economical and environment-friendly.
Owner:宁波蒙曼生物科技有限公司

Remote control device and surveying and mapping instrument lease management platform with remote control function

The invention provides a remote control device and a surveying and mapping instrument lease management platform with a remote control function. The remote control device includes a remote control endand a plurality of clients remotely controlled by the remote control end through wireless signals, the clients are arranged on individual surveying and mapping instrument, each client includes a positioning module, a monitoring module, a communication module and a client control module; and the surveying and mapping instrument lease management platform is used for clustering management of a plurality of surveying and mapping instruments applying the abovementioned remote control device, realizing tracking and management of the whole process of surveying and mapping instrument lease, use, settlement and after-sale, and the lease management platform is a surveying and mapping instrument lease management platform with informatization intelligent supervision. The remote control device is arranged on the surveying and mapping instrument, and can perform remote positioning and remote monitoring on the surveying and mapping instrument, and the lease management platform can perform clusteringmanagement and control, and is a surveying and mapping instrument lease management platform with good controllability and high efficiency.
Owner:梁顺鑫

Bean coarse cereal production method applying radio frequency sterilization

The invention discloses a bean coarse cereal production method applying radio frequency sterilization, and relates to the technical field of sterilization, in the production method, a radio frequency sterilization technology is used for sterilizing a coarse cereal prefabricated product, and compared with other sterilization methods, the radio frequency sterilization can kill microorganisms of the coarse cereal prefabricated product within a short time and at a low temperature, the color and flavor of the coarse cereal prefabricated product cannot be obviously changed, the phenomena of high heat property and nutrient loss are not easily caused, and an overturning mechanism is driven by a driving motor, so that an overturning claw circularly moves to flatly lay the coarse cereal prefabricated product, the coarse cereal prefabricated product is more sufficiently sterilized and more uniformly heated, the sterilization effect is better, and the problems that a long-time high-temperature sterilization and disinfection technology is adopted in the production process of existing bean coarse cereal food, products produced through the methods are high in hot property, people who eat the products are prone to getting inflamed, and nutritional ingredients are prone to being lost are solved.
Owner:ANHUI YANZHIFANG FOOD

Combination type excavator bucket tooth and die-forging method for tooth tip of combination type excavator bucket tooth

The invention discloses a combination type excavator bucket tooth and a die-forging method for a tooth tip of the combination type excavator bucket tooth. The combination type excavator bucket tooth comprises a tooth seat and the tooth tip; a bucket lip mounting opening is formed in the rear end of the tooth seat; a dovetail block which is in connected installation with the tooth tip is arranged at the front end of the tooth seat; a pin hole is formed in a connecting position between the front part of the tooth seat and the tooth tip; the tooth tip comprises a middle tooth and tooth protecting side plates; the tooth protecting side plates are respectively arranged on the two sides of the middle tooth; a tooth seat mounting opening is formed in the rear end of the middle tooth; a dovetail groove which is in matched installation with the dovetail block is formed in the front end of the tooth seat mounting opening; blind pin holes corresponding to the pin hole are respectively formed in the upper lip and the lower lip of the tooth seat mounting opening; the middle tooth is locked on the tooth seat through an adjustment pin shaft assembly which is arranged in the pin hole. The connecting structure of the tooth tip and the tooth seat is reasonable; the tooth tip cannot lose easily after long-time use; the tooth tip is convenient to detach and replace.
Owner:永平县建达鑫鑫合金铸造有限公司

Display board for constructional engineering drawing teaching

The invention discloses a display board for constructional engineering drawing teaching. The display board comprises a main display board body, two supporting legs are symmetrically and fixedly connected to the bottom of the main display board body, bases are fixedly connected to the bottoms of the two supporting legs, two grooves are symmetrically formed in the main display board body, assistantdisplay board bodies are slidably connected in the two grooves, two sliding cavities are symmetrically formed in the main display board body and communicated with the two grooves respectively, and moving blocks are fixedly connected to the assistant display board bodies. The display board is divided into the main display board body and the assistant display board bodies, the assistant display board bodies can be contained in the main display board body through the grooves, and the assistant display board bodies are slidably connected in the main display board body under the mutual effect of the sliding cavities, the moving blocks, stop blocks and other structures, so that the area of the display board is adjustable, large-area drawings can be displayed or more drawings can be displayed during teaching, use is more convenient, and the learning efficiency of students is improved.
Owner:GUIZHOU UNIV
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