156results about How to "Reflect security" patented technology

The invention relates to halogen-free flame retardant unsaturated polyester molding compound, which is made of the raw materials according to the part by weight: unsaturated polyester resin accounting for 18.2 parts to 20.5 parts; additive agent accounting for 11.2 parts to 13.3 parts; initiating agent accounting for 0.3 part to 0.55 part; polymerization inhibitor accounting for 0.003 part to 0.005 part; thickening agent accounting for 0.1 part to 0.25 part; filling material accounting for 68 parts to 75 parts; phosphate accounting for 10.2 parts to 14.8 parts; metal oxide accounting for 2.7 parts to 4.6 parts; mould release agent accounting for 1.4 parts to 1.7 parts and reinforced fibers accounting for 15 parts to18 parts. The halogen-free flame retardant unsaturated polyester molding compound has the advantages that the flame retardant effect is good, the intensity is high, the shrinkage is low, the electrical property is excellent, and the halogen-free flame retardant unsaturated polyester molding compound is safe to human body and is environmental friendly due to the flame retardant and halogen-free properties and can be applied to switches, the casing bodies of daily electric appliances and other fabricated parts.

The invention relates to a synthetic method for an allyl polyether-type high efficiency water reducing agent, belonging to the field of water reducing agent. The synthetic method utilizes allyl polyoxyethylene ether monomer, maleic-anhydride, and a mixture with one or more of (methyl) sodium allylsulfonate, 2-acryl amide-2-methylpropanesulfonic acid, itaconic acid, acrylic acid and acrylamide for obtaining polyether-type high efficiency water reducing agent by initiating one-step polymerization through inorganic peroxides in water solution system, the final structure of the water reducing agent comprises no ester bond, carboxyl, amide, sulfonic group and other functional groups. The synthetic method for an allyl polyether-type high efficiency water reducing agent has the advantages of having applicability for various concrete constructions; having simple and easy process control and non-pollution; resolving the disadvantages of lower polymerization activity of allyl polyether monomer, and resolving the ubiquitous low temperature crystallization problem of allyl polyether-type high performance water reducing agent; and realizing obtaining higher dispersity and preserving degree in low-dosage, particularly, having good dispersion performance on the condition of extremely low water cement ratio.

The invention discloses a quick charging system for an unmanned aerial vehicle and a charging method thereof, wherein the quick charging system and the charging method belong to the field of unmanned aerial vehicle charging. The quick charging system for the unmanned aerial vehicle comprises a supporting module, a positioning module and a charging module. The supporting module is used for assisting the unmanned aerial vehicle body in landing and supporting the unmanned aerial vehicle body. The positioning module is used for performing return positioning on the unmanned aerial vehicle body so that the unmanned aerial vehicle body lands on the supporting module. The charging module is used for controlling a charging process. The charging method according to the quick charging system comprises an unmanned aerial vehicle body returning step, an image acquiring and positioning step, a quick landing step, a charging step, etc. The charging process comprises three periods, namely pre-charging, multi-step constant-current charging and pulse charging. According to the quick charging system, the supporting module is combined with other modules for forming a complete charging system, so that the unmanned aerial vehicle body can accurately and quickly land on the supporting module, thereby greatly improving charging efficiency and realizing high autonomy and convenient use.

The invention relates to a reconfigurable mechanical arm guaranteed cost decentralized control method based on self-adaption dynamic programming, and belongs to the field of robot control systems andcontrol algorithms. In order to the solve the problems that according to a traditional reconfigurable mechanical arm control method, joint coupling crosslinking items disturb system integral control,energy consumption is generated in the reconfiguration and control process of reconfigurable mechanical arms, and the uncertainty permissible range exists in the motor actual working process, the method constructs a kinetic model of a reconfigurable mechanical arm subsystem, coupling crosslinking items of all joints are singly shown through a reconfigurable mechanical arm inertia item, a coriolisforce and centrifugal force item and a gravity item, and a performance index function and an HJB equation are constructed; the HJB equation is solved through a method based on ADP policy iteration, coupling crosslinking uncertainty items among the joints are compensated through a neural network, and finally the validity of the algorithm is verified through numerical simulation of different-configuration two-freedom-degree mechanical arms; and high-accuracy control over the reconfigurable mechanical arms is achieved.

The invention is a method for remotely monitoring and maintaining automated system, comprising the steps of: (1). Building a remote monitoring maintenance station (RMMS) in enterprise's maintenance monitoring center; (2). building an automatic remote monitoring maintenance unit (RMU) at each remote automatic substation; (3). then interconnecting the maintenance monitoring center with every remote automatic substation through Intranet and / or Internet; (4). With the help of Intranet and Internet, building private and safe remote access channels for remote client ends to run maintenance software of in-station (substation) intelligent equipment manufactures, so as to implement management of remote monitoring and maintenance system of the automated system. And the invention is integrated with automation technique, network technique and information safety technique, where monitoring / data collection function, local / remote function, safe virtual channel function and large-capacity real-time database and high-performance processor assure reliable, safe and high-efficiency implementation of the above functions.

The invention relates to an insulin syringe needle with a needle tip protection function. The insulin syringe needle comprises a needle body, a needle seat, a main shell and an outer jacket, and is characterized in that a trigger pipe, a front casing pipe and a spring are arranged in the main shell, the trigger pipe is used for protecting an injection section of the needle body before the application, and the front casing pipe is used for protecting the injection section of the needle body after the application. Before the application, the trigger pipe stretches out of the main shell and stays at a needle body protection stage, and the front casing pipe is arranged in the main shell; after the application, the trigger pipe is arranged in the main shell, the front casing pipe stretches out of the main shell and stays at a needle body protection state. The unlocking of the trigger pipe and the front casing pipe is correlated to the state whether the syringe needle is prepared for injection or not, and the unlocking of the trigger pipe and the front casing pipe is triggered by utilizing a tail cover and the needle seat when in installation, and safety and convenience in use can be improved.

The invention discloses an intelligent safety wheelchair. A double-closed-loop control system controls the rotation speed of driving wheels so that accurate control over the speed can be achieved. Meanwhile, the intelligent safety wheelchair provides two control modes including user operation lever control and autonomous navigation, automatic obstacle avoidance is achieved, whether the condition of the body of a user is abnormal or not is detected in real time, and corresponding protection measures are taken, so that convenience and safety guarantee are provided for traveling of elder people and the handicapped. Compared with a traditional wheelchair, the intelligent safety wheelchair can detect the condition of the body of the user, and when it is judged that the condition of the body ofthe user is abnormal, an alarm is given out in time, and the action of a motor is stopped. The safety is high, and the wheelchair is particularly suitable for elder people and the handicapped to use.

The invention discloses low-emissivity coated glass which can be baked to be bent, relates to coated glass, in particular to the low-emissivity coated glass. The invention provides the low-emissivity coated glass and a sandwich heat-protecting glass formed by the low-emissivity coated glass. The low-emissivity coated glass is sequentially provided with a glass sheet, a first dielectric layer, a low-emissivity layer, a second dielectric layer and a protection layer, wherein, in a preferable embodiment, the coated glass is sequentially provided with glass substrate, SiOxNy, NbOx, NiCrOx, ZnSnOx, Ag, NiCrOx, NbOx and SiOxNy membranous layers. A polyvinyl butyral (PVB) layer and a glass sheet are sequentially overlapped outside the protection layer of the low-emissivity coated glass to form the sandwich heat-protecting glass. The visible light transmittance of the sandwich heat-protecting glass is at least 76%, and the solar energy transmittance is equal to or less than 48%; or the visible light transmittance is equal to or more than 70%, and the solar energy transmittance is equal to or less than 43%. The sandwich heat-protecting glass is particularly suitable for being used as the front windshield glass of an automobile.

The invention relates to a disposable safe insulin injection needle head matched with an insulin pen to be used. The disposable safe insulin injection needle head comprises a needle body, a needle seat, a main casing and an outer sheath, wherein the outer sheath is arranged outside the main casing in a sleeving way. The disposable safe insulin injection needle head is characterized in that a locking structure achieving a matching effect through a clamp block and a clamp opening is arranged between the outer sheath and the main casing, a seat disc is arranged on the needle disc, the outer edge of the seat disc has the sliding positioning connecting relationship with the inner edge of the main casing, and during the injection needle head installation, the axial thrust of the insulin pen is used, so that the seat disc moves to a second positioning position from the first positioning position, the outer edge of the seat disc jacks up the clamp block arranged on the outer sheath, the clamp block is unbuckled from the clamp opening, the outer sheath is unlocked with the main casing, and in the state, the outer sheath is allowed to be picked away. The disposable safe insulin injection needle head has the advantages that whether the outer sheath is allowed to be picked away or not and whether the insulin pen and the injection needle head are prepared for the injection state or not are associated, the use safety and the use convenience of the injection needle head are greatly improved.

The invention discloses a single control energy-saving multi-layer hollow glass inlaid louver. The single control energy-saving multi-layer hollow glass inlaid louver comprises a louver body; the louver body comprises a left longitudinal frame strip, a right longitudinal frame strip, an upper horizontal frame strip, a lower horizontal frame strip, inner glass, middle glass, outer glass, an inner hollow cavity partition frame, a curtain piece overturn and louver curtain lifting control mechanism a manual operation control mechanism, and a louver curtain and curtain piece overturn and louver curtain lifting mechanism. The louver is characterized by further comprising an expanding and fastening mechanism which is fixed in the right longitudinal frame strip, and is connected with an overturn shaft driving mechanism and the curtain piece overturn and louver curtain lifting control mechanism; a left longitudinal frame strip cavity covering plate is matched in a inserted mode with the left longitudinal frame strip; an upper horizontal frame strip covering plate is matched with the upper horizontal frame strip in an inserted mode; the curtain piece overturn and louver curtain lifting control mechanism comprises an overturn shaft and a pulling rope coiling device; the pulling rope coiling device comprises a first and second pulling rope coiling roll rotating shaft head bearing seats, afirst and second pulling rope coiling roll rotating shaft heads and a pulling rope coiling roll. Air impermeability and intensity of the louver body are improved; lifting is stable, the operation is easy and the driving effect to the overturning shaft is guaranteed.

The invention discloses a lifting jack hydraulic pressure machine, which belongs to the technical field of pressure machines. The machine comprises an upper cross beam, a lower cross beam, a machine frame, work piece frames, a lifting jack body and an oil cylinder, wherein the machine frame is connected between the upper cross beam and the lower cross beam and consists of a first longitudinal arm and a second longitudinal arm which are longitudinally parallel to each other; the work piece frames are arranged on the first longitudinal arm and the second longitudinal arm in an up-and-down movement mode and are positioned between the upper cross beam and the low cross beam; the lifting jack body is arranged on the outer side of the first longitudinal arm or the outer side of the second longitudinal arm; and the oil cylinder is arranged on the upper cross beam and is connected with a hydraulic oil circuit of the lifting jack body. The machine is characterized by also comprising a work piece frame lifting mechanism, wherein the work piece frame lifting mechanism is used for lifting and lowering the work piece frames, arranged on the machine frame and connected with the work piece frames. The machine has the advantages that: the operation intensity of operators can be obviously reduced, and the operation efficiency can be obviously improved; the oil cylinder can be prevented from being damaged; and the condition that the operators are hurt because a machined workpiece is ejected out accidentally can be prevented, so that operation safety is reflected.

The invention relates to an operating safety assessment method based on distribution network fault lost load recovery values, belonging to the technical field of power system dispatching automation and power grid simulation. The method comprises the steps of: carrying out N-1 fault scanning on a distribution network, and carrying out recovery and optimization calculation on lost electrical loads in each fault so as to obtain recoverable lost electrical load values; after the scanning is completed, accumulating lost electrical loads recovered each time so as to obtain a total recovered lost electrical load value; and establishing distribution network operating safety indicators according to a total lost electrical load value, a total recoverable lost electrical load value and the total recovered lost electrical load value. During the recovery and optimization of fault lost loads, active, reactive, voltage and radial operating restricted detailed distribution network recovery and optimization models are taken into account, and the problem of mixed integer quadratic constraint programming is solved by adopting a branch and bound method. According to the method, indicators for distribution network operating safety assessment are developed based on the optimization models, and then, the operating conditions and the safety of a network configuration of the current distribution network can be reflected.

The invention relates to a comprehensive tripping monitoring operating system comprising a touch screen industrial computer and a PLC (Programmable Logic Controller) as a control system and a computing processing system. An acquisition system is formed by various sensors, and an executive operating system is formed by various controllers. The comprehensive tripping monitoring operating system is characterized in that an integrated intelligent program design is adopted and combined with qualitative analysis and quantitative analysis to integrally and comprehensively solve the problems of well kick and well leakage monitoring, single upright post timing counting, intelligent grouting and prevention of a runner wagon from knocking an upper overhead travelling crane and smashing a lower platform in the tripping process.

The invention discloses a road speed limiting control device, which relates to the field of traffic, machinery and electronics. The road speed limiting control device comprises a speed limiting mechanism device (1), a speed measuring device (2), a current control device (3) and an external power supply (4) which are installed on a road lane, wherein the speed measuring device (2) and the current control device (3) are respectively connected with the external power supply (4); and the speed limiting mechanism device (1) and the speed measuring device (2) are respectively connected with the current control device (3). When the running speed of a passing vehicle is lower than a limited speed of the lane, a speed limiting mechanism does not work, and the vehicle passes stably; and when the running speed of a passing vehicle is higher than the limited speed of the lane, the speed limiting mechanism works, and the overspeed vehicle is subjected to obvious bump and vibration. According to the invention, a vehicle driver is required to drive according to the limited speed through visual warning and the bump and vibration, and the safety and the humanized design of vehicle speed limiting passing control appliances are shown simultaneously.

The invention discloses a charging method of a quick unmanned aerial vehicle (UAV) charging system, belonging to the field of charging of UAVs. The charging method utilizes the quick charging system for charging the UAV; the charging system comprises a support module, a locating module and a charging module, wherein the support module is used for assisting a UAV body to land and supporting the UAV body; the locating module is used for returned voyage location of the UAV body so as to enable the UAV body to land onto the support module. The charging method comprises the processes of enabling the UAV body to make a return voyage, carrying out image acquisition and positioning, enabling the UAV body to rapidly land, charging, and the like, wherein the charging process comprises three stages, i.e., precharging, constant-current charging in stages and pulse current charging. The complete charging system is formed by combining the support module and other modules, so that the UAV body can accurately and rapidly land onto the support module, and the charging efficiency is greatly improved; the charging system is high in autonomy and convenient to use.

The invention relates to the technical field of low-pressure drawer type switch equipment, in particular to a multiloop function unit for a low-pressure drawer type switch cabinet, which carries out the drawer operation by an unlocking button and comprises a lock plate, a display plate, an interlock base and a three-position locating plate, wherein one side of the three-position locating plate is provided with a location guide surface, and the other side is provided with a display guide surface, a test position locating slot and a connecting position locating slot are arranged on the location guide surface, the step transition is adopted for the display guide surface which is provided with a test position display step and a connecting position display step, and the display guide surface is contacted with the location guide surface through a lock rod. When a drawer reaches an appointed position, the test position locating slot and the connecting position locating slot are embedded to realize the locking of the drawer; meanwhile, a drive rod is contacted with the display guide surface, the display plate is enabled to swing through the drive of the display guide surface, and a state display window displays the current position. The invention has more compact structure, and enables the installation space in the drawer to be further increased.

A quick-releasing mechanism belongs to the technical field of special apparatuses used for emergency relief materials delivery and comprises a couple of hook base plates mutually connected through a sling shaft, a clamp-pin hook shaft and a limit clamp shaft; a couple of guide plates formed with a releasing hook cavity are arranged on any one of the couple of hook base plates; a clamp-pin hook is adopted and one end of the clamp-pin hook is sleeved onto the clamp-pin hook shaft and the other end is free; a torsion spring is sleeved on the clamp-pin hook shaft and the middle part of the torsion spring is forced onto the clamp-pin hook and a couple of torsion spring feet are supported by the couple of hook base plates; a limit clamp is adopted and one end of the limit clamp is sleeved onto the limit clamp shaft and the other end corresponds to and is connected with the clamp-pin hook; and a releasing hook is arranged in the releasing hook cavity formed between the couple of guide plates and is connected with the limit clamp. The quick-releasing mechanism has the advantages that the safety can be guaranteed; the mechanism can be applied to both water and land areas so as to break the environment limit; and the integral structure is simple.

The invention discloses a cloud platform safety quantitative evaluation method based on an improved VIKOR method. The cloud platform safety quantitative evaluation method comprises the following steps of S1, determining the index system and attribute of cloud platform safety quantitative evaluation; S2, preprocessing index attribute data, and establishing an evaluation basis matrix; S3, converting the evaluation basis matrix into a standardized decision matrix; and S4, establishing a cloud platform safety evaluation model, and obtaining the evaluation result ranking index of each evaluation scheme in dependence on the evaluation model. Aiming the characteristic, of the cloud platform, that each evaluation factor has dynamic nature and relevance, a new decision matrix establishing method is provided, and therefore defects and deviations of a conventional VIKOR decision matrix processing method in the evaluation information set aspect can be overcome, scientificity, objectivity and comprehensiveness of safety evaluation can be obtained at the same time, and the accuracy of the cloud platform safety evaluation result can be improved.

The invention relates to an electric cable of an ink jet printer, belonging to the technology field of wires and cables. The electric cable comprises a gathering cable of an ink supplying pipe and a gathering cable of a power supply and a signal wire, the gathering cable of the ink supporting pipe and the gathering cable of the power supply and the signal wire are combined together to form a structure with 8-shaped cross section. In the technical proposal, the gathering cable of the ink supplying pipe and the gathering cable of the power supply and the signal wire are combined together to form a structure with 8-shaped cross section, a pipeline which is used for supplying ink colors and a signal wire which is used for supplying the power and an ink jet signal are effectively controlled, thereby being helpful for pipeline management, indicating the safety of operation site and improving the condition of the operation site well.

The embodiment of the invention provides an account verification method and device. The method comprises a step of receiving a login request message sent by a first terminal device, wherein the login request message comprises an account, a password and first terminal information of the first terminal device, and the first terminal information comprises at least one piece of information in attribute information of the first terminal device, first terminal device position information and network information of the first terminal device, a step of obtaining safe terminal information corresponding to the account after the verification of the account and the password is approved, wherein the safe terminal information is obtained when the account is in a login state, a step of determining a safety factor of the account according to the first terminal information and the safe terminal information, and a step of sending a login success response message to the first terminal device when a condition that the safety factor of the account is larger than or equal to a preset safety factor is determined. The method and device are used for improving the accuracy of account verification.

Provided is a bank vehicle safe door lock device, which belongs to the safe facility technical field of bank vehicle. The device comprises a lock casing fixed in the interlayer of the safe door, a cipher lock installed in the casing chamber of the lock casing, a mechanical locking mechanism which is disposed on the lock casing and cooperates with the cipher lock to lock the safe door and the safe, a locking disk arranged in the casing chamber of the lock casing and coupled with the mechanical locking mechanism, and a locking disk limiting mechanism arranged in the casing chamber of the lock casing and cooperating with the locking disk to lock the locking disk. the device is characterized in that the device also comprises a locking disk automatic control mechanism which can cause the mechanical locking mechanism actualize automatic locking when closing the safe door, and the locking disk automatic mechanism is coupled with the locking disk. The device has the advantages that the locking disk automatic control mechanism is added to guarantee that the mechanical locking mechanism can automatically lock when closing the safe door, thereby the device can cope with sudden situation and embody the safety.

Disclosed is a preparation process of a conductive halogen-free flame-retardant PA / PE(polyamide / polyethylene) alloy material, belonging to the technical field of high-polymer material preparation. The preparation process includes steps of adding 180-200 parts of 6-nylon resin, 55-70 parts of polyethylene resin, 1.5-3.2 parts of coupling agents, 20-30 parts of metallic oxide, 40-55 parts of solid phosphate and 15-26 parts of conductive carbon fibers which are weighed according to weight parts into a high-speed mixer to mix, adding 0.7-1.5 parts of antioxidants, 80-100 parts of glass fibers and 1.2-2.0 parts of surface modifiers which are weighed according to weight parts, and mixing for 5-10 minutes continuously to obtain granulating materials; adding the granulating materials into a double-screw extruder to melt and extrude out while controlling the temperature of a first heating region of screws to be 235 DEG C, the temperature of a second heating region and a third heating region to be 243 DEG C respectively, the temperature of a fourth heating region and a fifth heating region to be 246 DEG C respectively, the temperature of a sixth heating region and a seventh heating region to be 250 DEG C respectively and the temperature of an eighth heating region to be 245 DEG C so as to obtain the halogen-free flame-retardant PA / PE alloy material. The preparation process has the advantages that process links are few, preparation efficiency can be improved, the PA / PE alloy material prepared by the process is conductive, antistatic, environment-friendly and safe.

The invention discloses an anti-fall face protection device for cobra breeding, including a main body of the protection device, a hood and a mask, wherein the hood is fixedly connected to the top of the main body; the mask is fixedly connected to the bottom of the main body; the bottom end of the mask is fixedly connected with a chin top bracket; an adjustment spring is fixedly connected to the inner bottom of the mask; an adjusting hook is fixedly connected to one side of the inner bottom of the mask, the bottom end of the hood is fixedly connected with an adjusting cap ring, the adjusting cap ring plays a very good role in preventing the main body from falling off, and the chin supports the upward pressure, so that the head of the cobra farmer and the hood form a stable supporting structure, thus effectively guaranteeing the anti-fall effect of the main body; the nasal support embodies the humanization of the main body and improves the comfort of the main body of the protection device; the isolation film fully embodies the safety of the main body of the protection device and is suitable for the use of face protection, so that the anti-fall face protection device for cobra breeding has a wide development prospect in the future.

The invention discloses a cover-pressing handle for a pot, and belongs to the technical field of cooking utensils. The cover-pressing handle comprises a pot body connecting block fixed with a pot body and a dead handle fixed with the pot body connecting block. The cover-pressing handle is characterized by also comprising a rotary handle, wherein the rotary handle is connected with the pivot of the dead handle. According to the technical scheme, the rotary handle is arranged on the dead handle, the rotary handle presses or releases the pot cover of the pot body, and the pot cover does not need lifting when the soup is poured out, so the operation efficiency can be improved, the safety can be ensured, and the poured soup does not carry fine solid food can be ensured.

The invention discloses a method for sharing the content information of an electronic whiteboard, which comprises the following steps: acquiring the content information of the whiteboard and outputting the content information of the whiteboard; transmitting the whiteboard content information to a main control system, wherein the main control system identifies the whiteboard content information andconverting the whiteboard content information into image content information; the server uniformly processing the image content information to form the uniform resource locator information through the authorized access of the image content information by the software platform; the server uniformly processing the image content information to form the uniform resource locator information; obtaininguniform resource locator information, parsing the uniform resource locator information, and parsing to form device identification information; the terminal system acquiring the equipment identification information, verifying the equipment identification information through the terminal system, and causing the whiteboard content information to be displayed on the screen of the terminal system. Theinvention has the advantages of simple operation, high sharing speed, and long-distance transmission, so that the remote conference can be efficiently carried out.

The invention discloses a forced LNG (Liquefied Natural Gas) evaporator for ships, and belongs to the field of gasification equipment of natural gas. The forced LNG evaporator comprises a tank body of a gasification tank, a group of U-shaped radiating pipes, a group of U-shaped gasification pipes, a radiating-medium guide connector and a gas-liquid guide connector, wherein a left tank-body end cap is arranged at the left end of the tank body, a left tank-body end-cap connector is fixed on the left tank-body end cap, and a left end-cap connector sealing plate is fixed to the left end opening of the left tank-body end-cap connector; a right tank-body end cap is arranged at the right end of the tank body, a right tank-body end-cap connector is fixed to the right tank-body end cap, and a right end-cap connector sealing plate is fixed to the right end opening of the right tank-body end-cap connector; a middle medium inlet opening is formed in the upper part of the tank body of the gasification tank, and a middle medium outlet opening is formed in the bottom of the tank body of the gasification tank; the U-shaped radiating pipes are arranged in the cavity of the tank body; the U-shaped gasification pipes are arranged in the cavity of the tank body; the right end of the radiating-medium guide connector is fixed to one side of the left end-cap connector sealing plate, a radiating-medium guide connector cavity separation plate is arranged in the cavity of the radiating-medium guide connector, a radiating-medium inlet opening is fixed to the upper part of the radiating-medium guide connector, and a radiating-medium outlet opening is fixed to the lower part of the radiating-medium guide connector; a gas-liquid guide separation plate is arranged in the cavity of the gas-liquid guide connector, an LNG inlet opening is fixed to the lower part of the gas-liquid guide connector, and an LNG outlet opening is fixed to the upper part of the gas-liquid guide connector. The forced LNG evaporator is safe, and the radiation efficiency and gasification efficiency are improved; the forced LNG evaporator is convenient to process.

The invention discloses an ice cream filling machine, which belongs to the technical field of food packaging machines. The ice cream filling machine comprises a rack, a filling mechanism and a chain track mechanism, wherein the rack is composed of a crossbeam bracket, first and second crossbeams and a set of crossbeam supports; the filling mechanism is arranged at the other end of the rack; the chain track mechanism is arranged between the first and second crossbeams; and the ice cream filling machine is characterized in that a power mechanism comprises a motor, a reduction gearbox, a main driving wheel, a cam, a pawl, a large sprocket shaft, a ratchet wheel plate, a first large sprocket and a second large sprocket. The ice cream filling machine has the advantages that the security is embodied, and the concise effect of the whole machine can also be improved; as the power mechanism adopts a structure that the pawl is matched with the ratchet wheel plate, the first and second large sprockets do not produce an inertia motion in the process of pausing, and the reliability of moving and pausing of the chain track mechanism carrying paper cups is ensured, so that the filling quality of the filling mechanism is ensured, and the occurrence of unqualified filling products or the waste of frozen ice cream raw materials is avoided.

The present invention relates to a train safety step. It includes baseplate, and uses said baseplate as supporting connection plate for form upper, middle and lower three layers, said upper layer is step cover plate, the middle is drawing-pulling step, between middle drawing-pulling step and baseplate a roller guideway is set, said middle drawing-pulling step can be reciprocally moved on said roller guideway. Said roller guideway is composed of three portions, they are respectively drawing-pulling step guideway, baseplate guideway and rollers. Besides, said invention also provides the application method of said safety step.

The invention discloses a preparation method of non-hydrazine L-carnosine, and belongs to the technical field of organic synthesis. The method comprises the following steps: reacting anhydrous o-benzoyl diformyl-L-carnosine with 5-10 times of weight of low fat serotonin at the temperature of 20-35 DEG C for 8-12 hours to remove a protecting group; and after reaction is finished, distilling to remove the low fat serotonin, adding a crystallization solvent for crystallization, and filtering, washing and drying to obtain the product, wherein the low fat serotonin is alkyl primary amine of C3-C8.The method has the advantages that the cost is low, energy consumption is also low, the operability is high, the obtained product L-carnosine does not contain toxic substance hydrazine, and thus, thesafety of the L-carnosine is fully guaranteed.