33results about How to "Reduce operational security risks" patented technology

The invention relates to the technical field of data processing. The invention discloses a monitoring system and method for a distribution network construction process and a computer readable storage medium. The monitoring system for the distribution network construction process comprises a power failure information collector, a power failure event analysis unit, a power failure event sending unit and a power failure event monitoring unit. The power failure information collector is used for acquiring power failure event data. And the power failure event analysis unit is used for obtaining the corrected power failure event data. And the power failure event sending unit is used for sending the business processing items with the updated processing priorities to a corresponding application system. And the power failure event monitoring unit is used for monitoring service processing items and obtaining fault node information and the latest state of service processing, and the power failure event monitoring unit displays the fault node information and the information of the service processing items in real time through a visual interface. According to the monitoring system, unified management of power failure event information can be realized, and the safety operation risk of a power grid is reduced.

The invention relates to a train enhanced screening method based on autonomous sensing equipment, which multiplexes the autonomous sensing equipment (APS) used for detecting obstacles in an existing system, and through real-time interaction between the APS and a vehicle-mounted controller (CC), the APS sends barrier-free point information in front of / behind a train to the CC; after detecting that the front / rear barrier-free points are consistent with the current train safety positioning information, the CC sends the information to a zone controller (ZC), the ZC executes train head / tail screening operation according to the train safety positioning information, the front / rear barrier-free point information, the occupancy state of secondary detection equipment (STDE) and other information, head screening (head screening for short) is rapidly completed, and the train is recovered to run in a CBTC mode; and tail screening (tail screening for short) is completed, and a rear train moving block tracking operation mode is recovered. Compared with the prior art, the operation execution efficiency of the train head / tail sieve is improved, the normal operation recovery time of the line is shortened, and the operation efficiency is improved.

The utility model relates to the field of water gap processing device discloses a connecting rod drive's rotary water gap breaking device, including base, the top fixedly connected with first base and second base of base, the inside of first base and second base all is provided with rotation structure, the rotation structure includes push cylinder, the piston rod end fixedly connected with first connecting rod of base, the one end rotationally connected with second connecting rod of first connecting rod away from push cylinder, the one end rotationally connected with third connecting rod of second connecting rod away from first connecting rod, the one end fixedly connected with rotating shaft of third connecting rod away from second connecting rod, the one end fixedly connected with fixed base of rotating shaft, in the utility model, the mutual cooperation between push cylinder, first connecting rod, second connecting rod, third connecting rod and rotating shaft drives fixed base to rotate, and the product water gap of claw fixing is broken down successfully, and simple, convenient operation improves installation efficiency and work efficiency.

The utility model provides a crane beam track offset detection device, which belongs to the field of civil engineering detection, and comprises a main ruler and an auxiliary ruler, the main ruler and the auxiliary ruler are in a split structure, and the main body is a square rod; the upper surface of the main ruler is provided with scales used for length measurement, one end of the main ruler is vertically and fixedly provided with a first measuring claw downwards, and the inner surface of the first measuring claw is flush with the zero graduation line of the scales. A second measuring claw is vertically and fixedly installed at one end of the auxiliary ruler downwards, an auxiliary positioning plate is vertically and fixedly installed at the same end of the auxiliary ruler upwards, and the outer surface of the second measuring claw is flush with the outer surface of the auxiliary positioning plate and is perpendicular to the main body of the auxiliary ruler. The device is simple in structure, convenient to process and miniaturized, is beneficial to passing through most of grid gaps of the protective fence, is high in measurement efficiency, is convenient and safe, ensures the measurement accuracy, reduces the operation safety risk, and improves the detection efficiency, and personnel do not need to enter a travelling crane operation area for operation.

The utility model provides an outdoor rest cabin which is characterized in that a cabin main body is cylindrical, the cabin top is hemispherical, and the bottom end of the main body is a circular plane, so that the cabin body can stand on the ground through the circular plane; the cabin door can slide in the circumferential direction of the body to be opened or closed. A folding seat is arranged in the cabin body; two hanging rings are further fixed on the side wall of the main body; a side support used for making contact with the ground and supporting the cabin body in the horizontal use state is further fixed to the side wall of the body. And a rest platform is further fixedly arranged in the cabin body. The multifunctional nursing bed is convenient and flexible to move and use, can be vertically or horizontally placed according to working conditions and working conditions, and meets the requirement of sitting or sleeping resting of people; by using the fireproof material, the safety of personnel can be effectively protected when an accident occurs, and the fireproof material is suitable for dangerous places such as hazardous chemical substance operation and storage; and a heat tracing and cold air system is arranged, so that the harm to human bodies caused by environmental factors can be avoided, and the safety operation risk caused by the operation quality is reduced.

The invention relates to the technical field of cooling towers, in particular to a heat exchanger of a closed cooling tower, which comprises a cooling tower body, a support frame is fixedly arranged at the bottom of the cooling tower body, a flow guide mechanism is fixedly connected to the cooling tower body, and a movable seat is arranged in the cooling tower body in a sliding fit manner; a washing air guide frame is rotationally connected to the adjusting block, a driving mechanism is rotationally connected to the interior of the washing air guide frame, in the using process of the closed cooling tower, when the heat exchanger needs to be cleaned, the surface of the plate heat exchanger can be comprehensively washed by arranging the washing air guide frame moving in a reciprocating mode, and the cleaning effect is improved; according to the automatic flushing system, the dependence on manpower is reduced, the manual maintenance cost is reduced, and the frequency of manual operation is reduced through automatic flushing, so that the operation safety risk is reduced, the maintenance efficiency can be remarkably improved, the downtime is reduced, and meanwhile, the service life of equipment is prolonged.

The utility model relates to a rapid lap joint and automatic control device for capacity verification of a storage battery pack. The rapid lap joint and automatic control device comprises a circuit breaker; one end of the first quick cable connector is electrically connected with the storage battery pack, and the other end is electrically connected with the input end of the circuit breaker; one end of the second quick cable connector is electrically connected with the discharge dummy load, and the other end is electrically connected with the output end of the circuit breaker; the battery parameter acquisition module is electrically connected with a storage battery pack; the storage battery monitoring host is electrically connected with the battery parameter acquisition module; and the serial port I / O control module is electrically connected with the storage battery monitoring host and a tripping motor in the circuit breaker. The storage battery capacity checking device can avoid tedious cable lap joint and dismounting work in the prior art, is compatible with equipment of different manufacturers, greatly improves the automation degree of storage battery capacity checking work, improves the working efficiency and the equipment utilization rate, saves the labor cost, reduces the safety operation risk, and guarantees the safety of workers and equipment.

The invention provides a feeding and discharging machine. The feeding and discharging machine comprises a feeding and discharging structure and a carrying mechanism. Wherein the loading and unloading structure is provided with a loading area and an unloading area, the loading area is used for placing a first pallet capable of bearing a battery cell material box, and the unloading area is used for placing a second pallet capable of bearing an empty material box. The carrying mechanism is installed on one side of the feeding and discharging structure and used for carrying the battery cell material boxes to a target area from the feeding area and carrying the empty material boxes to the discharging area from the target area. According to the feeding and discharging machine, automatic feeding and discharging without shutdown can be achieved, operation is easy and convenient, the automation degree is high, the labor intensity of operators and the operation safety risk are reduced, the labor cost is reduced, and the machining efficiency of battery packs is improved.

The present invention discloses an urban rail vehicle pantograph air spring alarm system and a control method thereof, the system comprises: a chassis, an air spring, a pantograph assembly, a sensor assembly, a control unit and an alarm device; the air spring is mounted on the chassis, the bottom of the pantograph assembly is connected to the chassis and the air spring respectively, as the air spring is inflated and exhausted, the pantograph assembly completes the corresponding pantograph raising and lowering actions; the sensor assembly is arranged on the air spring, for monitoring the internal gas pressure data of the air spring and the position change of the air spring during the inflating and exhausting process, and transmitting the data to the control unit, the alarm device is connected to the control unit, for receiving the control command sent by the control unit, and alarming. The present invention has the advantages of compact structure, high control accuracy, high intelligence, etc., can monitor the working state of the air spring in real time, improve the troubleshooting rate, and reduce the urban rail vehicle operation risk caused by the deterioration of the air spring performance.

The present invention relates to the field of concrete material detection technology, in particular to a method for detecting cracks in a concrete structure based on quantum measurement technology, comprising the steps of: S10, emitting a concrete particle beam perpendicular to the plane, scanning and detecting from one side of the plane to the other side, converting the received electromagnetic particle representation physical quantity to obtain electrical signal data, recording the first position of the detection point when the electrical signal data changes for the first time and the second position of the detection point when the electrical signal data changes for the last time; S20, scanning and detecting based on the second direction of the plane, recording the third position and the fourth position of the detection point when the electrical signal data changes for the first time and the last time; S30, setting a plurality of detection points within the range defined by the first, second, third and fourth positions, and determining the size parameters of the cracks according to the electrical signal data of all detection points. The present invention can not only improve the efficiency of concrete detection, but also make great technical progress in the field of concrete detection.

The utility model provides an aluminum electrolysis cell supporting mechanism. The aluminum electrolysis cell supporting mechanism comprises two aluminum blocks arranged in a spaced mode and an aluminum strip connected between the two aluminum blocks, an inner supporting piece is arranged between the two aluminum blocks and comprises a base, a threaded rod and a movable rod, one end of the threaded rod is fixed to the base, the other end of the threaded rod is in threaded connection with the movable rod, and the movable rod is in threaded connection with the base. The end, away from the screw rod, of the base is matched with one aluminum block, and the end, away from the screw rod, of the movable rod is matched with the other aluminum block. The inner supporting piece adopts a threaded connection mode, the movable rod can be stretched or shrunk relative to the base by manually screwing the movable rod, so that the aluminum block is supported or released, extra tools are not needed, the operation is more convenient, and the labor intensity is reduced.

The application discloses a synthesis method of 9-bromoanthracene and belongs to the technical field of organic synthesis. Anthracene is used as raw material, inorganic bromide salt is used as a bromine source, hydrogen peroxide is used as an oxidant, and 9-bromoanthracene is synthesized in a mixed solvent under the catalysis of a composite Lewis acid with high selectivity; the crude product is purified through step-by-step fractional recrystallization to obtain a high-purity product. Through the synergistic effect of the composite catalytic system and the mixed solvent, the generation of the difficult-to-remove by-product 9,10-dibromoanthracene is inhibited from the source, and the efficient separation of the product and the key impurities can be realized without column chromatography by combining the gradient cooling fractional crystallization process. The process is green and safe, simple to operate, low in cost and easy to industrialize, and the prepared 9-bromoanthracene can meet the application requirements in high-end fields such as OLED photoelectric materials.

The utility model belongs to the technical field of molds, and discloses a device for quickly replacing mold inserts, which comprises a mold frame, a first insert is arranged in the mold frame, a second insert is arranged in the first insert, the first insert is fixedly arranged, the second insert is movably arranged, a gap is reserved between the mold frame and the first insert, a pinch bar mechanism is arranged in the gap, and the pinch bar mechanism is fixedly arranged on the mold frame. The pinch bar mechanism comprises a supporting column and a connecting rod, the connecting rod penetrates through the supporting column, the supporting column is fixedly connected with the second insert, the front end of the connecting rod abuts against the bottom of the second insert, a mold knocking hole is formed in the mold frame, and the mold knocking hole is vertically aligned with the tail end of the connecting rod. According to the device for quickly replacing the mold insert, the pinch bar mechanism is arranged between the mold frame and the insert II, so that the insert of the mold can be quickly replaced on an injection molding machine. And the threshold of operators is reduced, and multiple types of workers do not need to co-operate. And the operation safety risk of the mold in the production link is reduced.

The invention discloses a mounting method of a large-span floor arch structure with an arch springing prestress balance cable. The mounting method comprises the following steps: step 1, determining partitions; 2, the arch springing prestress is tensioned for the first time; 3, arch foot sections are installed; the integral hoisting sections are assembled and welded on the ground, temporary tensioning assemblies are installed on the lower chords of the integral hoisting sections, the integral hoisting sections are tensioned, and the tensioning value is the horizontal thrust value generated by the ends of the integral hoisting sections; lifting frames are installed at the two ends of an integral lifting section area of the floor arch structure correspondingly, a set of lifting frames are symmetrically arranged on the two sides of each end of the integral lifting section, lifting assemblies are installed on the lifting frames, and the integral lifting section is lifted in place through the lifting assemblies; step 5, mounting a closure section; step 6, unloading; and 7, tensioning is conducted. Through close combination of various construction technologies, the installation efficiency of the floor arch structure is improved, low measure cost investment is achieved, and the economical efficiency is good.

The invention provides a large sintering bin installation method. A to-be-constructed large sintering bin is divided into a bin cone section, a bin lower straight section, a bin ring beam section and a bin upper straight section; the material bin cone section and the material bin lower straight section are subjected to tailor welding, so that a lower combined bin body is formed; the bin ring beam section is hoisted to a mounting platform with the preset height to be fixed, and the lower combined bin body is hoisted so as to complete tailor welding of the upper end of the lower combined bin body and the bin ring beam section at the end; wherein the mounting platform is located above the center position of a 0m-layer bin body of the stock bin; and the upper straight section of the stock bin is hoisted to the position above the bin ring beam section and welded to the bin ring beam section. According to the installation method of the large sintering stock bin, the problem of transportation overrun of the large stock bin can be effectively solved in the construction process; and the problems of high hoisting height, overweight hoisting weight, limited site and the like during installation of the large stock bin single body are solved, the construction efficiency can be improved, the safety risk of operation of constructors is reduced, and the construction cost is saved.

The invention relates to the technical field of power distribution networks, in particular to an intelligent inspection method for a power distribution network, which comprises the following steps: S1, constructing an intelligent inspection system for the power distribution network; s2, partitioning the area covered by the power distribution network; s3, obtaining power distribution network inspection related information; s4, analyzing the obtained power distribution network inspection related information; s5, manually verifying the analysis result; and S6, performing corresponding slave processing on the condition according to the specific condition. The area covered by the power distribution network is divided into a common area, a hidden danger area and a dynamic area, resources needed by inspection are reasonably distributed according to the importance degree of the areas, inspection related information is obtained through two methods, an analysis module can automatically analyze the inspection information, the accuracy is improved through manual verification, and the inspection efficiency is improved. The inspection work efficiency can be effectively improved, the inspection period is shortened, the inspection work quality can be greatly improved, and the safety operation risk of a power grid is effectively reduced.

The utility model provides a single-pole crane beam track offset detection device, which belongs to the civil engineering detection field, and comprises a main ruler and an auxiliary ruler, the main ruler is internally provided with a cavity, the auxiliary ruler slides in the cavity along one end of the main ruler and parallel to the main ruler, and the other end of the main ruler is fixedly provided with a first measuring claw in a vertically downward manner; the upper surface of the auxiliary ruler is provided with scales for length measurement, and one end of the lower surface close to the first measuring claw is vertically and downwards fixedly provided with a second measuring claw; the lower part of the main ruler is provided with a long-strip-shaped sliding groove seam. The second measuring claw extends out of the sliding groove seam and slides along the sliding groove seam. When the auxiliary ruler slides, the distance between the second measuring claw and the first measuring claw is equal to the scale value of the auxiliary ruler which is just exposed out of the main ruler. The device is simple in structure and convenient to machine, the situation that a person climbs over a crane beam protective barrier to enter a crane running area for measurement is avoided, the operation safety risk is reduced, the actual operation difficulty is reduced, the detection efficiency is improved, and meanwhile the measurement accuracy is guaranteed.

The invention discloses an automatic drilling machine area space management system based on virtual debugging, and the system comprises an integrated control PLC system which carries out data interaction with automatic drilling robot equipment; the virtual debugging platform is used for dynamically updating the three-dimensional model in real time according to the operation form of the automatic drilling robot equipment and calculating space change information of a drilling machine area in real time; and the display module is used for displaying the three-dimensional model of the virtual debugging platform and the space information of the drilling machine area in real time. The virtual debugging platform is built based on the physical model and the control logic, the automatic drilling machine area space management system and the virtual debugging technology are fused, three-dimensional space simulation is applied, the virtual debugging effect is achieved before construction, and the construction efficiency is improved. Safety guarantee is provided for automatic drilling machine operation from multiple dimensions of equipment safety, operation handover safety, personnel state and the like, time and labor intensity depending on physical equipment verification are saved, and drilling area space management in a real sense is achieved.

The present invention discloses an observation window arrangement structure of a fishway observation room, including a vertical dividing column and a horizontal dividing beam of a concrete structure arranged within the range of the observation window to divide the size and area of ​​the glass window, and glass installed on the vertical dividing column and the horizontal dividing beam to form the observation window. The vertical dividing column arranged along the water depth height direction is a through column, and the horizontal dividing beam arranged along the swimming direction of the fish includes an upper horizontal horizontal dividing beam and a lower horizontal horizontal dividing beam. The vertical dividing column divides the observation window hole into two left and right observation windows of the same width along the swimming direction of the fish, and the upper horizontal horizontal dividing beam and the lower horizontal horizontal dividing beam are respectively located in different observation windows and are not located at the same elevation. The size and stress of a single piece of glass are reduced, the observation requirement of no blind spot within the swimming range of the fish is met, and the requirements of structural safety and normal use function are met.

The utility model discloses a distributed photovoltaic clamp for a color steel tile roof, relates to the technical field of solar photovoltaic power generation, and aims to solve the problems that the existing clamp in the market can only fix one material and cannot integrate and fix a plurality of materials, so that auxiliary system materials of a photovoltaic power station are laid disorderly and unsystematically, are not attractive and cannot be used as a whole. According to the technical scheme, the photovoltaic power station supporting frame comprises a main frame, the main frame is divided into two parts including a first support and a second support, the first support and the second support are fixed in a sliding inserting and buckling mode through connecting parts at the upper ends, through empty grooves are formed in the upper portions of the first support and the second support, and the first support and the second support are connected through the through empty grooves. According to the utility model, the structure is novel, and a plurality of installation grooves are arranged in the upper ends of the first support and the second support, so that materials can be conveniently provided for centralized installation of an auxiliary system, the occupation condition of the auxiliary system on a roof is reduced, the laying area of a photovoltaic assembly is increased, and the power generation amount of a project is improved.

The utility model relates to felt rolling equipment technical field provides a kind of felt slitting structure, including outer frame body and the inner frame body with saw blade form saw bench structure, inner frame body is horizontally placed in the cavity of outer frame body and with the space of the two sides inner wall of outer frame body, at least one group of slide rail is equipped on the crosspiece of outer frame body, the pulley on the crosspiece of inner frame body is equipped with and is supported on slide rail, the stability of the inner frame body sliding on outer frame body is improved, motor is connected on outer frame body, the cam on the output end of motor, the cam is connected with the side hinge of inner frame body on the cam The cam and the side hinge of inner frame body are connected. Saw bench reciprocating sliding cutting is driven by motor, and saw blade reciprocating motion along guide rail, can realize automatic continuous cutting, without frequent manual intervention. This mode not only can improve cutting efficiency, but also can be adjusted by saw blade speed, stroke to adapt to different material felt, while reducing operation safety risk.

The utility model discloses a pumping unit wellhead packing rapid taking-out device, and belongs to the technical field of mechanical oil extraction production. According to the technical scheme, the device comprises two sets of symmetrical sectioning encircling structures, and one ends of the two sets of sectioning encircling structures are rotationally connected through a connecting screw rod; the other ends of the two groups of split encircling structures can be fixedly / detachably connected through a pin and a locking screw rod; in each sectioning embracing structure, a screw claw is connected with the bracket; the supporting rod is connected with the support, a rack rod is arranged on the supporting rod, and a straight rack is arranged on the rack rod; the polish rod holding closing device is provided with a gear which is connected with the spur rack in a meshed mode. And the gear is connected with the polish rod holding closing device. The packing digging device has the advantages of being high in practicability and adaptability, convenient to operate, time-saving and labor-saving, capable of being operated only by using matched tools after being installed, capable of solving the problems that packing digging is strenuous, tools are damaged, people injury accidents are prone to occurring and the like, capable of improving working efficiency, capable of reducing labor intensity of workers, capable of improving oil well production time rate and capable of reducing operation safety risks.

The utility model relates to the technical field of natural gas pipeline internal detection, and particularly discloses a pipeline internal detector running speed automatic control device which comprises a ball serving assembly and a ball receiving assembly, the ball receiving assembly can be connected with the ball serving assembly through a detected pipeline, and an internal detector used for pipeline internal detection is arranged in the detected pipeline. The inner detector can move from one end of the detected pipeline to the other end of the detected pipeline. According to the utility model, the running speed of the inner detector is adjusted in real time according to the flow and the pressure difference in the ball serving assembly and the ball receiving assembly, so that the problem that the controllability cannot be realized while the timeliness of the running speed control cannot be ensured in the running speed control mode of the existing pipeline inner detector is solved; the conditions of hysteresis quality and poor control precision of manually controlling the opening degree of the regulating valve to control the gas transmission amount are avoided, and meanwhile, the possibility of control failure of controlling the operation speed by controlling the opening degree of the drainage hole detected in the inner detection can be avoided, so that the detection data is more accurate, and the operation safety risk is reduced.

The application discloses a kind of thermal power unit electric power system primary frequency modulation load instruction control system and method, belong to the intelligent control technical field of thermal power unit.The application is by combining main steam pressure setting and DEH measured speed to participate in collaborative control, effectively shorten the frequency modulation instruction transmission and control response delay, realize frequency modulation advance fast action.Can fully release unit heat storage, quickly promote frequency modulation power output, can efficiently damp the frequency fluctuation of high frequency, large amplitude of power grid, avoid frequency sustained deviation out of limit.Effectively alleviate the contradiction between machine and furnace dynamic adjustment at the same time, on the premise of guaranteeing the operation safety of unit body, improve the response rate and regulation capacity of unit primary frequency modulation, enhance the stability of power grid frequency, reduce the risk of safe operation of power grid.

The utility model provides a middle transverse shaft type flap gate for a navigation gate hole, which stretches across the navigation gate hole, is used for retaining water, discharging flood and navigating, and comprises a gate bottom plate, two side gate piers, at least one middle gate pier, a shaft driving device, a transverse rotating shaft, a gate plate, middle supporting bearings and two side supporting bearings, and the number of the middle supporting bearings is in one-to-one correspondence with the number of the middle gate piers; equipment mounting cavities are formed in the two side gate piers; the middle gate piers are evenly distributed in gate holes between the two side gate piers and fixedly arranged on the gate bottom plate at intervals, and the middle supporting bearings are installed on the tops of the middle gate piers in a one-to-one correspondence mode. The transverse rotating shaft penetrates through each middle supporting bearing and each side supporting bearing; the transverse rotating shaft is fixedly connected with the vertical middle of the gate plate, and the gate plate comprises a lower plate part located below the transverse rotating shaft and an upper plate part located above the transverse rotating shaft. The gate for the navigation gate hole meets the requirements of safe operation, convenience in overhaul and maintenance and cost reduction at the same time.

The invention discloses a transformer oil-submerged pump mounting and dismounting device and a using method, the transformer oil-submerged pump mounting and dismounting device comprises a jacking device and an oil cylinder, the oil cylinder is fixedly connected with the jacking device and provides jacking power for the jacking device, the jacking device comprises a main plate, a plurality of telescopic cylinders are arranged on the main plate, and a bearing bottom plate is movably arranged at the tops of the telescopic cylinders. The device has the beneficial effects that (1) the oil-submerged pump is lifted and jacked through each independent telescopic cylinder, lifting of a certain telescopic cylinder can be independently controlled, lifting of the telescopic cylinders can also be integrally controlled, the number requirement of operators can be reduced through the local fine adjustment effect of universal wheels, the installation and alignment time of the oil-submerged pump can also be greatly shortened, and the installation and alignment efficiency of the oil-submerged pump is improved; the mounting and dismounting efficiency of the oil-submerged pump is improved; and (2) the oil-submerged pump can be firmly fixed through the fixing device, abnormal movement of the oil-submerged pump is prevented, the safety operation risk of field operation personnel can be effectively reduced, and meanwhile, more time and labor are saved.

The application provides an energy-saving optimization control method, device and medium for condenser cooling water quantity, wherein the method comprises the following steps: acquiring real-time load parameters and cooling water inlet temperature parameters of a unit; determining optimal cooling water flow rate in a stepwise increasing and decreasing flow rate mode according to the load parameters and the temperature parameters; and controlling the operation state of a circulating water pump according to the optimal cooling water flow rate. The application realizes accurate adjustment of the condenser cooling water flow rate, effectively reduces the sum of the unit heat consumption and the water pump power consumption, and improves the economy of the unit operation without changing the original circulating water pump and the matched motor.

The utility model provides a crane beam track offset detection device based on a rotating rod, which belongs to the field of civil engineering detection and comprises a main ruler and an auxiliary ruler which are of a split structure. The upper surface of the main ruler is provided with scales for length measurement, one end of the main ruler faces downwards, is vertically and fixedly provided with a first measuring claw, the other end of the main ruler is rotationally connected with the rotating rod through a rotating hinge and is fixed in mutually horizontal and vertical directions, and the inner surface of the first measuring claw is flush with a zero scale line of the scales; a second measuring claw is vertically and fixedly mounted at one end of the auxiliary ruler downwards, an auxiliary positioning plate is vertically and fixedly mounted at the same end of the auxiliary ruler upwards, and the outer surface of the second measuring claw is flush with the outer surface of the auxiliary positioning plate and is perpendicular to the main body of the auxiliary ruler. The device is simple in structure, convenient to machine, high in measurement efficiency and convenient to use, the situation that a person climbs over a crane beam protective barrier to enter a crane operation area for measurement is avoided, the operation safety risk is reduced, the detection efficiency is improved, and meanwhile the measurement accuracy is guaranteed.

This utility model relates to the field of rubber product technology and discloses an automated foaming and extrusion production line, including a mixer, an elevator, a two-roll mill, and a sheeting machine. The two-roll mill includes an elevator and a double-layer two-roll mill. The double-layer two-roll mill includes a feed hopper, an upper roller assembly, and a lower roller assembly arranged sequentially from top to bottom. Upper guide mechanisms are provided on both sides of the upper roller assembly, and lower guide mechanisms are provided on both sides of the lower roller assembly. A cutting mechanism is provided on the front side of the lower roller assembly. An edge material recovery mechanism is provided on the front side between the upper and lower roller assemblies. A tamping mechanism is provided on the rear side between the upper and lower roller assemblies. A material feeding mechanism is provided on the top of the frame. A moving conveyor mechanism is provided below the lower roller assembly. The moving conveyor mechanism, elevator, and feed hopper cooperate to form a material circulation conveying path. This utility model effectively reduces the equipment footprint and factory space requirements, while also reducing the overall power consumption and equipment investment costs, and decreasing the number of operators.

This invention provides 13 High-abundance CO was prepared by CuO catalytic oxidation. 13 This invention relates to a CO2 apparatus and method, belonging to the field of stable isotope-labeled compound preparation technology. The apparatus described in this invention is an integrated unit comprising a feed gas supply unit, a fixed-bed reaction unit, a cryogenic collection unit, a partial pressure purification unit, and a tail gas treatment unit connected in series. The fixed-bed reaction unit includes a fixed-bed reactor, a heater, and a temperature sensor. This invention utilizes high-temperature calcined modified CuO catalyst particles, combined with a composite bed structure design of "quartz wool-quartz sand-catalyst-quartz sand," significantly improving conversion efficiency and selectivity; optimizing the purification process, achieving product quality that meets high-end application standards; featuring a novel apparatus design with greatly improved sealing and stability; simple and controllable operation, facilitating industrial scale-up; and being green, safe, and environmentally friendly, aligning with industrial development trends.