22results about How to "Control impact" patented technology

The invention relates to a soft rock tunnel grouting combined control excavation system and a construction method. The soft rock tunnel grouting combined control excavation system comprises a concrete grouting stopping wall, a tunnel, a grouting stopping rock tray, a primary supporting type steel frame, a small guide pipe shaping support, a guiding construction platform, a temporary inverted arch, a grouting platform and a section steel transverse temporary supporting frame. The construction method has the beneficial effects that after the first round of advanced grouting, excavation is reserved, the assembly type grout stop wall is installed, the grouting pipe is arranged, and advanced grouting is conducted; the influence of gushing water on a tunnel structure, an underground water environment and surface vegetation is effectively controlled; the lower flange of the primary support profile steel is clamped between the inclined I-shaped steel and the cushion block, and the primary support steel frame fixing bolts are installed in a hole forming mode to complete installation of the small guide pipe connecting device, so that the construction precision of small guide pipe installation is greatly improved, and the small guide pipe connecting device can be recycled.

The invention provides a railway green performance data knowledge extraction method. The method comprises the steps of data collection and preprocessing, knowledge graph construction and data standardized storage. The method comprises the following steps: collecting and classifying key data of a full life cycle of a railway; constructing an ontology by a top-down method, extracting knowledge, and storing the knowledge in a graph database; storing the structured data based on the metadata, sorting and classifying the unstructured data, binding the unstructured data with the knowledge graph, and storing the unstructured data; according to the method, the environment-friendly degree of railway engineering can be improved, information management is optimized, the data driving force of decision support is increased, data sharing and communication are promoted, the sustainability of railway projects is improved, compliance of environmental protection rules and policies is achieved, and the timeliness and dynamic updating capacity of data are improved; not only are knowledge extraction efficiency and accuracy improved, but also monitoring and improvement of key performance indexes of the railway engineering are more scientific and systematic, and energy conservation, consumption reduction and ecological environmental protection of the railway engineering are further promoted.

This utility model discloses a dart impact testing machine for measuring material properties, comprising: a base with a mounting groove on its surface, a negative pressure chassis slidably inserted into the inner wall of the mounting groove, a mounting unit for limiting the position of the negative pressure chassis on the inner wall of the mounting groove, a negative pressure groove on the top of the negative pressure chassis, a pressure plate above the negative pressure chassis, a negative pressure unit, and a first driving unit, wherein the negative pressure unit applies negative pressure to the inside of the negative pressure groove. In this utility model, by creating a lifting groove on the surface of the base, and with a lifting block slidably inserted into the inner wall of the lifting groove, during use, the user rotates a threaded rod, which drives the lifting block, threaded onto the surface of the threaded rod, to slide along the inner wall of the lifting groove, thereby controlling the height of the impact dart and thus controlling the impact force.

This invention discloses a prefabricated V-shaped rigid frame bridge and its construction method. The prefabricated V-shaped rigid frame bridge includes: pier foundations, at least two V-legs, and a main girder. The V-legs are composed of multiple prefabricated segments stacked together, with the bottom fixed to the pier foundation via a post-cast section and the top having a cast-in-place section. The main girder includes a No. 0 segment beam and multiple symmetrically arranged prefabricated segments. The prefabricated segments of the main girder are constructed using the inverted beam method, i.e., the top slab, then the web, and finally the bottom slab are prefabricated in sequence. The cast-in-place section of the No. 0 segment beam is integrally cast with the top cast-in-place section of the V-legs. This invention achieves rapid and standardized prefabrication and assembly of variable cross-section beams and V-legs through prefabrication and inverted beam method templates, shortening the construction cycle, reducing the risks of high-altitude operations and traffic interference, improving quality and durability, and possessing economic and environmental advantages.

The present invention relates to a three-dimensional laser detection device for roads and airport pavements, which belongs to the field of detection instruments, and includes a laser collector, a vertical module, a horizontal module, a suspension bracket and a roller; the roller is located directly below the suspension bracket; the laser collector is fixed on the suspension bracket; the suspension bracket is installed on the vertical module, and the vertical module is installed on the horizontal module. Among them, the combination of the horizontal module and the vertical module can arbitrarily adjust the height of the laser from the surface of the object to be measured, so as to determine parameters such as the laser brightness and the effective acquisition width; the roller speed is controlled by a PC, and the accuracy and repeatability tests at any acquisition speed can be performed; the cylinder surface of the roller can be provided with simulated road surface diseases, which can be used to identify the accuracy of the software for identifying specific diseases, and can effectively control the influence of natural light. In summary, the present invention can better complete the calibration and debugging of the laser collector.

The utility model relates to the field of chemical engineering and particularly provides an acetone mixed gas washing and purifying system which comprises a washing tower, a gas inlet is formed in the lower part of the washing tower, a washing liquid inlet is formed in the upper part of the washing tower, a gas phase outlet is formed in the top of the washing tower and connected to activated carbon adsorption equipment, and a liquid outlet is formed in the bottom of the washing tower. The liquid outlet is connected to the washing liquid inlet through a washing liquid circulating pipeline and a circulating pump; a desorption gas pipeline of the activated carbon adsorption equipment is connected to a dilute acetone storage tank after passing through a condenser, and the dilute acetone storage tank is connected to a rectifying tower. According to the utility model, through the arrangement of the washing tower, acetone mixed gas is firstly introduced into the washing tower before being conveyed to the activated carbon adsorption equipment, and is washed by using a small amount of washing liquid to remove impurities such as oil, flyings, dust and the like in the gas, and the washed gas phase mainly comprises acetone and air which enter the activated carbon adsorption equipment to be adsorbed; and then analyzing and condensing to obtain dilute acetone liquid, and rectifying to separate acetone and water for recycling.

The invention relates to the technical field of engineering structures, and particularly discloses an underground structure permanent assembly whole-process prefabrication system and a construction method thereof, the underground structure permanent assembly whole-process prefabrication system comprises enclosure members, structural permanent columns, a first support, a second support, a uniform stirring body and a structural outer wall; a plurality of enclosure components and a plurality of structural permanent columns are arranged; the enclosure components are distributed in parallel along the uniform stirring body and are distributed in a staggered manner in the vertical direction; one sides of the multiple enclosure components are detachably connected into the uniform stirring body to form a prefabricated enclosure wall, the prefabricated enclosure wall and the basement structural wall are combined to form a combined outer wall structure, and a second concrete enclosure purlin is fixedly arranged on the other sides of the multiple enclosure components; a first concrete enclosing purlin is fixedly arranged on the upper end faces of the enclosure components. According to the method, assembly of the construction process can be achieved, the construction speed and the construction quality are effectively controlled, overall stress of the underground structure is achieved, and deformation generated in the construction process of the underground structure and the influence on the surrounding environment are effectively controlled.

The utility model discloses a circuit for identifying an EPB switching signal through double MCU isolation. The main micro-control chip MCU1 and the main control power supply management PM1 module, the auxiliary micro-control chip MCU2 and the auxiliary control power supply management PM2 module are connected with the EPB switch signal switching and 5V power supply switching module, and the EPB switch signal switching and 5V power supply switching module is connected with the EPB switch module. According to the utility model, the chip is selected through the signal channel, the same load EPB switch controlled by the redundant MCU is isolated, the control of the auxiliary MCU on the EPB switch is prevented from being influenced when the main MCU fails, or the control of the auxiliary MCU on the EPB switch is prevented from being interfered and the control of the main MCU on the EPB switch is prevented from being influenced when the main MCU works, and the function safety of the EPB electronic parking system is improved.

The invention discloses a pipeline all-position automatic welding method and device based on instantaneous heat input control. The method comprises the following steps executed by a welding control system: S1, receiving basic parameters and welding process specifications of a to-be-welded pipe; s2, welding process parameters are matched based on the basic parameters and welding process specifications; s3, a welding torch is controlled to conduct all-position welding on the pipeline based on the welding process parameters, and the instantaneous welding current, the instantaneous welding voltage, the welding speed and the sampling frequency collected by a welding power source are obtained; and S4, instantaneous heat input is calculated according to the instantaneous welding current, the instantaneous welding voltage, the welding speed and the sampling frequency, and the walking speed and position of the welding torch are adjusted in real time based on the instantaneous heat input. According to the scheme, the instantaneous heat input of the pipeline welding joint can be controlled, then the grain size, the phase change conversion and the segregation tendency of a weld nugget area and a heat affected area of a welding seam are controlled, the structure performance of the welding joint is improved, and the welding quality of the pipeline circumferential welding seam is improved.

The invention relates to the field of metallurgical solid waste resource utilization, in particular to a KR desulfurization slag resource utilization process which comprises the following steps: (1) slagging off molten iron to obtain pre-desulfurization slag and slagging-off molten iron, carrying out granulation cooling and magnetic roller iron removal on the pre-desulfurization slag to obtain iron particles and pre-desulfurization slag tailings, and returning the iron particles to a blast furnace for utilization, the slag tailings before desulfurization are prepared into superfine slag powder; and (2) carrying out KR desulfurization on the drossing molten iron obtained in the step (1), then carrying out drossing to obtain desulfurized slag, carrying out primary crushing and secondary crushing on the desulfurized slag to obtain secondarily crushed desulfurized slag, and returning the secondarily crushed desulfurized slag to a sintering process for reuse. According to the method, 100% resource utilization of the KR desulfurization slag can be achieved, iron, calcium and other resources are effectively recycled, carbon dioxide emission is reduced, the hidden danger of environmental protection is eliminated, and good economic benefits and social benefits are achieved.

The utility model provides a dustproof feeding port structure for benzyl arsonic acid production. Relates to the technical field of benzyl arsonic acid production, the dustproof feeding port structure for benzyl arsonic acid production comprises a feeding hopper, electric push rods are installed on the two sides of the feeding hopper, a same cover plate is fixedly installed on output rods of the two electric push rods, and two installation pipes are installed at the top of the cover plate; a plurality of air suction hoods are fixedly mounted at the bottoms of the two mounting pipes, a same connecting pipe is fixedly mounted at one ends of the two mounting pipes, a corrugated pipe is fixedly mounted at one end of the connecting pipe, a partition rubber curtain is fixedly mounted at the bottom of the cover plate, and the side, away from the cover plate, of the partition rubber curtain is fixedly connected with the feeding hopper. The dustproof feeding port structure for benzyl arsonic acid production provided by the utility model has the advantages that the dust emission can be reduced, the dust can be blocked and controlled, and the dust can be conveniently collected.

The utility model discloses an animal full-value mixed pellet feed granulator which comprises a base cylinder, the top of the base cylinder is fixedly connected with a granulation cylinder, the upper portion of the inner wall of the base cylinder is fixedly connected with a granulation hole disc, the top of the granulation cylinder is fixedly connected with a motor through a support, and the motor is fixedly connected with the granulation hole disc. And an output shaft of the drawing groove is fixedly connected with a rotating rod through a coupling. The utility model relates to the technical field of feed granulation. According to the animal full-value mixed pellet feed granulator, the drawing groove is formed in the surface of the granulation cylinder and provided with the storage hopper, the discharging opening matched with the plugging plate for use is formed in the inner side of the storage hopper and matched with the blade wheel for use, and by means of the structural arrangement, during feeding, the storage hopper is pulled out from the inner side of the drawing groove firstly, and then the discharging opening is formed in the inner side of the storage hopper; and the drawing groove is blocked by the storage hopper, powder is prevented from escaping, then the raw materials are put into the storage hopper, and the storage hopper is directly pushed to enter the granulation cylinder.

The utility model discloses an intelligent voice-controlled wine rack with a color-changing lamp function. The intelligent voice-controlled wine rack comprises a wine rack main body and a voice light control system arranged on the wine rack main body, the voice light control system comprises a controller, and a voice acquisition module, a voice recognition module, a power supply module, a communication module and a color-changing lamp module which are electrically connected with the controller; the voice acquisition module and the voice recognition module are respectively used for collecting a voice instruction of a user, converting the voice instruction into a recognizable signal and sending the recognizable signal to the controller; and the controller sends a corresponding control instruction to the color-changing lamp module through the communication module according to the identified signal. According to the utility model, the voice control part for controlling the color changing lamp module to change color or switch on and switch off is designed in the wine rack main body, so that when the working state of the color changing lamp module needs to be adjusted, the on-off of light and other instructions can be directly controlled by voice, a remote controller and a controller are omitted, and the operation is more convenient.

The invention provides a method for establishing a regional AIDS prevention and control efficiency development prediction model, which comprises the following steps of: A, obtaining an AIDS disability adjustment life year through AIDS disease burden measurement and calculation; b, obtaining the AIDS quality adjustment life year through AIDS health effectiveness measurement and calculation; step C, obtaining direct economic burden and indirect economic burden caused by AIDS through AIDS disease economic burden measurement and calculation; and step D, forming a regional AIDS prevention and control efficiency development prediction model through multi-dimensional measurement and calculation and integration. The AIDS comprehensive evaluation overall situation and the AIDS prevention and control work effect overview can be obtained, the AIDS prevention and control efficiency of a survey area can be comprehensively measured, comparison can be carried out in different areas, the range and strength of decision support evidences are expanded, the prevention and control efficiency is improved, the economic burden is reduced, and therefore AIDS propagation and influence are more effectively controlled.

The embodiment of the invention relates to the field of elevators, and provides a detection circuit, which is used in an elevator, and comprises a power supply module used for providing a first power supply signal; the switch control module is electrically connected with the power supply module, receives the first power supply signal, generates and outputs a second power supply signal under the control of the control signal, and generates and outputs a third power supply signal under the control of the detection signal; the detection module detects the third power supply signal and gives an alarm when the third power supply signal is abnormal; and the brake module is electrically connected with the switch control module and receives the second power supply signal to control the elevator to brake, so that the switch control module can be conveniently detected.

The utility model provides a dust exhaust device used in the iron mixing process of a converter, which comprises a support erected right above a molten iron tank, a dust exhaust hood opposite to a tank opening of the molten iron tank is arranged on the support, the dust exhaust hood is lifted up and down through a lifting air cylinder, a dust exhaust pipeline is communicated with the outer side of the dust exhaust hood, and the dust exhaust pipeline is communicated with the molten iron tank. A powerful fan is arranged in the dust exhaust pipeline close to one end of the dust exhaust hood, a spraying mechanism is arranged in the dust exhaust pipeline far away from one end of the dust exhaust hood, and the lifting cylinder and the spraying mechanism are respectively connected with a controller; the device is low in manufacturing cost, has no safety risk, can achieve the purpose of controlling dust overflow to influence the environment, and effectively ensures the body health of converter steelmaking workers.

The invention is applicable to the technical field of lime slaking equipment, and particularly relates to steelmaking sintering batching modular lime slaking equipment which comprises a mixing barrel main body, a mixing barrel top cover is arranged at one end of the mixing barrel main body, a first lifting block is slidably connected to the surface of the mixing barrel main body, and an electromagnet block is mounted in the first lifting block; a driving assembly is arranged on the surfaces of the mixing barrel main body and the first lifting block, and the driving assembly is used for driving the first lifting block to move. By accurately, efficiently and uniformly injecting the ingredients into the lime slurry, the uniformity of the sintered ingredients can be remarkably improved, so that an important positive influence is generated on a sintering process and a steelmaking effect. Firstly, the complete reaction of the lime in the sintered ore is ensured through the uniform distribution of the ingredients, so that the chemical components and alkalinity of the mineral aggregate are accurately controlled;

The present invention relates to a real-time sight line inference method integrating head posture and eye tracking, which sequentially determines the face area, head posture, eye tracking point, and face reference point, obtains the eye direction according to the distance ratio and angle change between the eye and the face reference point, and makes corrections in combination with the change of head posture, so as to infer the sight line direction under the current posture in real time. The method of the present invention takes into account the influence of the movement of the human head and the change of posture on the inferred sight line direction, and the inference method has high real-time performance and is easy to control errors. The embodiment is implemented by using a machine learning algorithm, and an ordinary visible light camera is used to obtain images. The required hardware requirements are low and the versatility is good, and the person can be placed in a natural state during the inference process.

The utility model discloses a sense orientation silicon steel plate strip shot blasting descaling unit, and the unit is composed of centrifugal shot blasting unit, shot blasting control box, intelligent control system and sensor device. The centrifugal shot blasting unit is connected with the intelligent control system through the shot blasting control box, and the sensor device can collect shot blasting parameters in real time and transmit to the intelligent control system. The system contains the supervision learning algorithm module, finite element simulation module, fault diagnosis module and automatic adjusting module. The supervision learning algorithm module and finite element simulation module interact data, and establish the mapping model of pellet parameters and descaling effect. The finite element simulation module simulates the iron oxide skin rupture mechanism and provides theoretical support. The fault diagnosis monitoring module equipment state, and the alarm when abnormal. The automatic adjusting module outputs dynamic parameter adjustment according to the model. The utility model realizes the accurate control of shot blasting parameters, improves the descaling efficiency and precision, and guarantees the surface quality of the orientation silicon steel plate strip.

The utility model relates to nitrogen spring technical field especially is two -segment type pressure nitrogen spring, including casing, piston rod, piston and first sealing ring, the casing is equipped with inner chamber and via hole, the via hole is equipped with the piston sleeve, and piston rod slidingly penetrates the piston sleeve, and the piston lifting is located in the inner chamber, and the piston is sealedly slidably connected with the inner side wall of inner chamber through first sealing ring, and the piston is equipped with flow control valve, upward overflow valve and downward overflow valve, and the bottom of casing is embedded with the inflation valve, and the inner top wall of inner chamber is equipped with the buffer pad. The present application has two -segment type elasticity change, namely from high elasticity gradually increases stage to low elasticity gradually increases stage, to satisfy the demand of linear change of different elasticity required by different displacement stroke, especially applicable to the deep drawing forming process of stamping die, and when the piston rod is reset, the impact force generated by the piston rod to the outside is effectively controlled.

The application discloses a method for controlling edge water when a Mini LED backplane glass is changed in specification, 1) when the thickness of the glass plate is adjusted, three edge waters are moved, the three edge waters are connected, the third edge water felt edge part exceeds the edge of the glass plate, and the water flow of the third edge water is adjusted; 2) when the width of the glass plate is adjusted to be wider, the positions of the three edge waters are adjusted, the felt edge part of the third edge water exceeds the edge of the glass plate, the water marks of the felt of the three edge waters on the glass plate are connected along the width direction of the glass plate, and the water flow of the three edge waters is increased; 3) when the width of the glass plate is adjusted to be narrower, the positions of the three edge waters are adjusted, the felt edge part of the third edge water is located at the edge of the glass plate, the water marks of the felt of the three edge waters on the glass plate are connected but not overlapped along the width direction of the glass plate, and the water flow of the three edge waters is decreased. According to the application, different edge water parameters are adjusted according to different plate changing conditions, so that the production loss caused by the change in the specification of the glass is reduced.

The invention discloses a control system and method for optimizing high-salinity mine water deep well injection parameters. The system comprises a data acquisition unit, a control unit, an execution unit and an environment monitoring module. According to the method, injection parameters are monitored and dynamically adjusted in real time through data acquisition, data processing and analysis, optimization and calculation, execution and adjustment, environment monitoring and protection, remote monitoring and management and the like. According to the invention, real-time data analysis, dynamic optimization and remote monitoring functions are combined, the efficiency and safety of mine water treatment are remarkably improved, and negative effects on the environment are reduced.