405 results about "Mechanical impact" patented technology

The invention provides a copper-steel composite heat pipe and a preparation method thereof, and relates to the technical field of heat pipes, the copper-steel composite heat pipe comprises a steel-copper composite pipe, and the steel-copper composite pipe is composed of a copper inner pipe and a steel outer pipe. An internal copper structure is arranged in the steel-copper composite pipe; the internal copper structure is copper powder or a copper wire mesh. The copper powder is unilateral copper powder or bilateral copper powder or ring copper powder; the copper wire mesh is a copper mesh, or a copper mesh and a copper wire capillary, or a copper wire capillary. The steel outer pipe is made of steel 316L, and the copper inner pipe is made of copper C1020. The copper-steel combined material is used, the cost is saved, and it is guaranteed that materials are saved in the whole heat dissipation field. The double-layer combination of the copper inner pipe (C1020, high heat conduction) and the steel outer pipe (316L, corrosion resistance and high strength) is adopted, the efficient heat conduction of copper is utilized, and the environment erosion resistance and mechanical impact resistance of steel are utilized, so that the heat pipe is adaptive to complex working conditions (such as industrial high-temperature, humid or corrosion risk scenes), and the service life of the heat pipe is prolonged.

The invention belongs to the technical field of impact fatigue tests of metal materials, and relates to an impact fatigue test system for simulating a working condition environment of a gun firing pin, which can perform high-frequency cyclic loading of 200MPa-500MPa, microsecond (mu s) level impact pulse and more than kilohertz (kHz), and synchronously simulate the working condition environment. High-energy, high-frequency and short-pulse impact loading under the gun and gun firing pin working condition is carried out through the high-frequency impact generation subsystem, and the dynamic mechanical environment in actual service is effectively simulated; the environment simulation subsystem is used for accurately controlling the temperature, the concentration and the pH value of media such as salt mist and seawater, and is synchronously coupled with mechanical shock, so that mechanical-electrochemical synergistic damage conditions are truly represented; dynamic stress, strain, electrochemical parameters and surface topography in the impact process are synchronously monitored through a multi-parameter synchronous acquisition subsystem, and complete data support is provided for researching the damage evolution law of a material under a complex load; the repeatability and the safety of the test are ensured through the modularized sample clamp subsystem and the dynamic sealing design.

The invention provides a thermal-compression-shear coupling effect-based explosive charging reaction threshold value measuring device, which comprises a sleeve, the sleeve comprises a cylindrical sleeve body, and the sleeve body is internally and coaxially provided with an axially through sleeve center cylindrical cavity; a lower striking column, a grain bottom isolation plastic pad, a grain circumferential isolation plastic ring, a compression-shear conversion rubber pad and an upper striking column are sequentially and coaxially arranged in the cylindrical cavity in the center of the sleeve from bottom to top in the axial direction. An explosive column is further coaxially arranged in the explosive column circumferential isolation plastic ring, the axial length of the explosive column is equal to the axial length of the explosive column circumferential isolation plastic ring, and the diameter of the explosive column is equal to the inner diameter of the explosive column circumferential isolation plastic ring. The sleeve body is further provided with a sleeve thermocouple, and the sleeve body is further coaxially sleeved with an annular heating sleeve. According to the device, the reaction threshold value of the explosive charge under the heat-pressure-shear coupling effect can be obtained, and the amplitudes of the heat load and the mechanical impact load borne by the explosive charge can be quantitatively adjusted.

The invention provides an impact table top optimization method and device based on multi-physics field coupling and a storage medium, and belongs to the technical field of mechanical impact simulation. According to the scheme, an impact table top is modeled, a large number of finite element models are randomly constructed according to a modeled structure model, and the impact table top is optimized; the model simulation system is used for carrying out analogue simulation on each finite element model, and the finite element model with the highest fitness is determined, so that the impact table top can be optimized according to table top parameters corresponding to the finite element models, and the performance requirements of light weight, high fundamental frequency and high strength / rigidity can be met at the same time; therefore, the impact table board can be in an extreme dynamic environment with high energy, transient impact and broadband excitation.

The invention discloses a self-adaptive control method and related device for multi-execution-shaft machining equipment, and the method comprises the steps: obtaining a mechanical resistance index and an abnormal adsorption index according to a load signal and an electromagnetic feedback signal of a driving mechanism in a process that a second execution part executes the butt joint of a workpiece; carrying out difference calculation and standardization processing on the two values and a self-adaptive reference value; performing weighted fusion according to a preset weight coefficient to obtain a comprehensive state index; and monitoring the change rate or the amplitude of the comprehensive state index in a continuous time window, and when the change rate or the amplitude exceeds a dynamic threshold value, adjusting the movement speed of the second execution component and / or executing a deviation correction action. According to the technical scheme, under the condition of not depending on a specific structure, butt joint deviation caused by chip residues or magnetic adsorption can be recognized and restrained in real time, mechanical impact is avoided, and the operation stability and machining quality of equipment are improved.

The embodiment of the invention provides a container transportation state monitoring method based on multi-parameter perception, which is applied to the technical field of logistics monitoring and comprises the following steps: by taking a Hall switch trigger signal as a time reference and a logic starting point, acquiring acceleration, attitude angle, position and temperature and humidity signals in a time window before and after triggering; performing time sequence correlation analysis on the acceleration, the attitude angle and the position signal to generate initial event judgment; when the initial event is determined to be physical door opening or hoisting start, extracting an impact decay time constant and an attitude angle deviation retention amount, and constructing a two-dimensional feature space to perform mechanical impact classification; asynchronously calling a temperature and humidity signal according to a judgment result for root verification; and generating a joint event code and executing differentiated resource control. According to the invention, triggering events with different properties can be accurately distinguished, risk grading of mechanical impact and source tracing of environmental abnormity are realized, terminal endurance time is obviously prolonged, and monitoring reliability is ensured.

The utility model relates to a kind of vacuum suction material device for calendering auxiliary agent production, including with the suction material device main body of communicating with negative pressure source and with the suction material device main body connection suction pipeline, suction pipeline at least includes the inner layer of forming suction passageway and the outer layer of being oppositely arranged with inner layer, the interlayer cleaning track of being sealed at both ends and extending along pipeline axial direction is formed between inner layer and outer layer;At least one cleaning member that can be guided in interlayer cleaning track is arranged, cleaning member is isolated with suction passageway and is correspondingly arranged with the facing area of inner layer;Outer layer is provided with driving member, driving member drives cleaning member reciprocating motion along interlayer cleaning track in non-contact mode;And inner layer is provided with disturbance transmission structure in facing area, for at least one of mechanical impact, vibration or field-induced vibration generated in interlayer cleaning track is coupled to inner wall of inner layer under the condition of keeping to suction passageway sealed isolation.

The application relates to the technical field of servo motor driving, and particularly discloses an inertia identification method based on double-frequency sinusoidal speed instructions, two different frequency sinusoidal speed instructions are sent to a motor by a servo driver, according to Newton's second law, a motion equation of a rotating system, a speed signal or an acceleration signal is multiplied by both sides of the motion equation of the rotating system, and integral operation is carried out in a complete period; for the test of the frequency omega1, the collected torque T e1 (t) is integrated with the acceleration, and thus the rotational inertia J can be directly solved. In the method, the speed instruction is a sinusoidal wave, compared with the trapezoidal acceleration and deceleration method and the step response method, the instruction is smoother, mechanical impact is small, and in addition, technical difficulties existing in the single-frequency sinusoidal excitation method can be avoided.

The utility model discloses an anti-lock brake circuit capable of reducing mechanical shock of a servo motor, which comprises a direct-current power supply, a relay, a diode and a brake coil, the anode of the direct-current power supply is connected with the anode of the diode through the relay, the cathode of the diode is connected with one end of the brake coil, and the cathode of the direct-current power supply is connected with the other end of the brake coil; an oscillating circuit formed by connecting a resistor and a capacitor in series is connected with the brake coil in parallel, and the resistor is connected with the cathode of the diode. The utility model not only can solve the problems of'mechanical impact 'and'flexible braking' frequently occurring in emergency, but also can reduce the braking burden, prolong the service life of equipment and improve the precision of the equipment.

The invention discloses an electromagnetic capture connecting mechanism with a spring flexible support, and relates to the technical field of electromagnetic capture. The device comprises a base, an inner cavity of the base is fixedly connected with a fixing assembly, the inner cavity of the base is fixedly connected with a flexible supporting assembly through the fixing assembly, the top of the flexible supporting assembly is fixedly connected with an electromagnetic coil, and the flexible supporting assembly comprises a mounting boss fixedly connected to the top of the base. According to the supporting structure, rigid supporting is changed into elastic deformable supporting, the stress of the end face of the electromagnetic coil and the supporting piece is effectively reduced, meanwhile, the damping spring and the electromagnetic coil are integrally designed, the buffering function is added while the electromagnetic performance is kept unchanged, the fatigue life of the supporting piece is prolonged, and the service life is prolonged. The magnetic core and the butt joint face are kept coaxial through the elastic buffering effect, force-displacement coupling energy absorption is achieved at the same time, mechanical impact at the electromagnetic capture moment is avoided, relative vibration attenuation in the butt joint process is accelerated, and capture precision is improved.

The utility model belongs to the technical field of engineering construction, specifically is a kind of engineering construction project information management device, including monitoring probe, still include: angle adjusting assembly, set in monitoring probe top;Photovoltaic board, set in angle adjusting assembly rotating end on;Connecting assembly, set in monitoring probe bottom outside;Power-on component, set in the both ends outside of connecting assembly;Battery module, set in the outside of power-on component;Limiting rod, symmetrically fixed to the outside of battery module;Mounting assembly, set in the outside of battery module, and mounting assembly is connected with external wall through fixed end;The utility model provides a kind of engineering construction project information management device, by installing assembly and erecting equipment on the wall outside, equipment is erected on the wall outside, avoid being placed directly on ground, reduce the damage risk caused by ground damp, dust flying or mechanical impact.

A position error monitoring method and control system of a rotating mechanism, in the position error monitoring method of the rotating mechanism, angular position data of an encoder of a first motor and an encoder of a second motor are acquired as first position data during a process; then, during a non-process, the relative speed between the first motor and the second motor is adjusted while the rotating mechanism remains in a rotating state, so that the relative position of the first rotating part and the second rotating part is dynamically adjusted to a preset calibration phase, and second position data are acquired during operation at the calibration phase; the transition from the process phase to the calibration phase can be completed without stopping the rotating mechanism, time loss and mechanical impact caused by frequent start and stop are avoided, and the operation efficiency and productivity of the rotating mechanism are improved; in addition, whether there is a transmission error is determined by calculating the deviation value between the second position data and the first position data, which helps to find faults in time and improve the consistency and yield of the process.

The invention belongs to the technical field of mechanical manufacturing and material science, and particularly relates to an artificial intelligence chip inductor powder mold surface strengthening treatment method and system, which comprises the steps of mold matrix mechanical shock strengthening pretreatment, preparation of a gradient diffusion layer, a toughness bonding layer and a superhard wear-resistant layer in sequence without breaking vacuum, and post-treatment. The system is integrated vacuum treatment equipment and realizes continuous treatment without breaking vacuum. Surface mechanical shock strengthening is introduced in the pretreatment stage of a mold base body, and a strengthening layer with a fine grain structure, high-density dislocation and remarkable residual compressive stress is formed on the surface layer of the mold. According to the strengthening layer, the fatigue strength and the plastic deformation resistance of the mold base body are effectively improved, a tough bearing substrate is provided for growth of the subsequent surface strengthening layer, and therefore the problem that the binding force between a traditional strengthening layer and a brittle base body is insufficient is fundamentally solved, and the fatigue fracture resistance of the whole mold structure is remarkably improved.

The invention relates to the technical field of road maintenance equipment, in particular to a viaduct ice and snow active identification and removal method and equipment based on deep learning, and aims to realize high-precision and low-delay identification of ice at the bottom of a bridge by replacing a standard convolutional layer in a YOLOv8 backbone network with a GSConv module and constructing a lightweight target detection model; by means of the identified and output position coordinates and size information, the infrared heating plate is guided to be accurately aligned with the root of the ice hanging part, heating parameters are dynamically adjusted, and the ice hanging part naturally falls off after being heated; falling ice blocks enter an ice melting box with a heating layer at the bottom through a collecting tank and a conveying pipeline, are instantly melted into water and are discharged through a drainage pipe, and a closed-loop clearing process without ice storage is formed. Manual intervention is not needed, the bridge body is prevented from being damaged by mechanical impact, the overturning risk of equipment caused by ice storage is eliminated, and the safety, efficiency and automation level of deicing operation are remarkably improved.

The invention belongs to the field of metal pipe machining equipment, and provides a multi-station pipe end forming machine aiming at the problems that existing equipment is low in station conversion efficiency, insufficient in positioning precision, inconvenient in die replacement and the like, the multi-station pipe end forming machine comprises a workbench, a linear guide rail and multiple sets of sliding bases and positioning frames, and a hydraulic push rod is driven to move; a six-station star-shaped bracket is arranged on the transposition main shaft and is matched with an arc-shaped bracket to clamp a pipe fitting, a stamping positioning sleeve and a transposition sleeve guarantee positioning and precise station switching, and a permanent magnet provides magnetic support; the die fixing table is provided with a replaceable forming die, the die fixing table integrates feeding, four-time progressive forming and discharging, forming is pushed through hydraulic drive, automatic position changing is achieved, continuous machining is achieved, efficiency and the automation level are improved, mechanical impact is reduced, and machining quality is guaranteed.

The application discloses a kind of brake band brake failure protection method and device, can when brake band brake is in failure state, start open loop zero servo control mode, in open loop zero servo control mode, determine the motor starting frequency matched with the current falling speed of lifting load, control motor starts at motor starting frequency, to control lifting load starts to descend from falling speed by motor to lifting load by applying upward direction tension, after motor starts, the operating frequency of motor is adjusted from motor starting frequency to preset frequency of lowering, to control lifting load to be lowered to ground at smaller speed corresponding to frequency of lowering.The application can start open loop zero servo control mode when brake band brake fails without action anti-falling device, safely lower lifting load to ground in the case where mechanical impact suffered by lifting mechanism is effectively reduced and braking comfort is improved, improve the work safety of lifting mechanism.

A protection device (1) for at least one electrical connector (50), in particular of a propulsion system (201) of a vehicle (200), in particular for protecting against electrical hazards, the protection device (1) comprising:-a protection screen (3) configured to at least partially surround the at least one electrical connector (50); and-a fastening system (10) for fastening at least one conduit (60) intended for flowing a fluid, the fastening system (10) comprising at least one fastening element (11) mechanically connected to the protective screen (3) on the outer surface of the protective screen, the fastening system (10) being able to release the at least one conduit (60) in the event of an external mechanical shock.

This invention provides a system for monitoring and removing scale from the inner wall of HVAC water pipes, belonging to the technical field of HVAC systems. It includes HVAC water pipes, with an auxiliary removal component installed on the outer wall of the pipes to use ultrasonic vibrations to peel scale off the inner wall. In use, the auxiliary removal component allows the ultrasonic transducer to receive a high-frequency electrical signal from an ultrasonic generator, generating high-frequency mechanical vibrations. These vibrations propagate rapidly along the wall of the HVAC water pipe and are transmitted to the water inside and the scale adhering to the inner wall. Under the action of the high-frequency ultrasonic vibrations, the scale gradually peels off the inner wall, achieving the purpose of scale removal without causing significant mechanical impact or damage to the HVAC water pipe itself. Long-term use will not affect the strength and sealing of the HVAC water pipes, ensuring their safe and stable operation.

The utility model discloses an assembly type heat preservation partition wall which comprises a wall body, assembly grooves are formed in the front end face and the rear end face of the wall body, a pair of first locking grooves are formed in the side walls of the two sides of the wall body, and the first locking grooves are symmetrically distributed in the top ends and the bottom ends of the side walls of the wall body. A threaded groove is formed in the groove bottom of the first locking groove, a heat preservation assembly is installed in the assembling groove, the front end face and the rear end face of the wall body are each fixedly connected with a pair of clamping blocks, and protection plates are installed on the front side and the rear side of the wall body. According to the utility model, each part can be disassembled at will, the carrying is more convenient and faster, the sealing performance is good, external moisture or water vapor can be effectively prevented from permeating into the wall body through gaps and contacting with the heat-insulating layer to influence the heat-insulating effect and the service life, and the heat-insulating assembly can be protected; the heat preservation assembly is prevented from cracking, deforming or falling off after being subjected to external force such as negative air pressure or mechanical impact, and the service life of the heat preservation assembly is not affected.

The invention discloses a position error monitoring method and a control system of a rotating mechanism, and the method comprises the steps: obtaining the angular position data of an encoder of a first motor and an encoder of a second motor as first position data in a process processing period; then, in the non-process treatment period, the relative speed between the first motor and the second motor is adjusted in the rotating state of the rotating mechanism, the relative position of the first rotating component and the relative position of the second rotating component are dynamically adjusted to the preset calibration phase, and second position data are obtained in the calibration phase operation period; transition from a process phase to a calibration phase can be completed without stopping the rotating mechanism, so that time loss and mechanical impact caused by frequent start and stop are avoided, and the operation efficiency and the productivity of the rotating mechanism are improved; in addition, whether transmission errors exist or not is judged by calculating the deviation value between the second position data and the first position data, faults can be found in time, and the consistency and yield of process processing are improved.

The invention relates to the field of pipeline testing, and discloses wear-resistant pipe testing equipment, which comprises a testing rack, a rotating mechanism, an internal flowing mechanism and an elastic external impact mechanism, and is characterized in that the rotating mechanism is mounted on the testing rack and is used for horizontally clamping a pipeline and driving the pipeline to rotate; the rotating mechanism comprises a driving flange which is used for clamping the tail end of a pipeline and is provided with a hollow structure; the internal flowing mechanism is connected with the hollow structure of the rotating mechanism through a rotating joint and is used for pumping slurry containing grinding materials into the pipeline and circulating the slurry; the external elastic impact mechanism is rotatably arranged on the outer side of the pipeline, and the complex service environment that the wear-resisting pipe bears inner wall abrasion and outer wall mechanical impact at the same time in actual industrial application is effectively reproduced through the synergistic effect of circulating scouring of internal abrasive-containing slurry and external periodic elastic impact. And the engineering correlation and reliability of the test result are obviously improved.

The invention relates to the technical field of electro-hydraulic pushers, and discloses a high-pressure large-flow electro-hydraulic pusher convenient for pressure regulation, which comprises a shell, the top of the shell is fixedly communicated with a cylinder barrel, the inner wall of the cylinder barrel is fixedly connected with a cross plate, and the inner wall of the cross plate is rotatably connected with a threaded rod I; the inner wall of the cylinder barrel is slidably connected with a piston rod, the inner wall of the cylinder barrel fixedly communicates with a backflow pipe, a motor is arranged at the top of the shell, the inner wall of the piston rod is fixedly connected with a circular plate, and the inner wall of a fixing box is in threaded connection with a second threaded rod. Mechanical impact generated by rapid contraction of the piston rod can be prevented, the conditions of cylinder barrel weld joint cracking and instant pressure damage of a sealing piece caused by overlarge impact are avoided, the load can be slowly and controllably reset by slowing down the contraction speed, reaction time is reserved for operators, and the severity degree of sudden safety accidents is reduced.

The invention discloses a preparation method of an anti-electromagnetic interference and anti-static electronic component cushion packaging material, and belongs to the technical field of electronic component packaging materials. The packaging material sequentially comprises a core layer (60-75%), an electromagnetic shielding layer (10-15%) and an anti-static buffer surface layer (15-25%) from inside to outside, and is prepared through layered preparation and composite molding. The core layer takes low-density polyethylene and the like as base materials, and nano calcium carbonate and the like are added to enhance the buffering property; the electromagnetic shielding layer adopts graphene / silver-plated fiber composite filler, so that the shielding effectiveness is improved; an antistatic agent and a synergistic aid are blended into the surface layer, and the synergistic aid is prepared by reaction of hexamethylene diisocyanate tripolymer and the like, so that the binding force and the functional stability of each layer can be synergistically improved. A finished product is high in shielding effectiveness, low in surface resistance and excellent in impact strength, the shielding effectiveness at the frequency band of 100 MHz to 1 GHz reaches 41 dB or above, the surface resistance is as low as 2.6 * 10 < 7 > omega, the impact strength is 6.0 kJ / m < 2 > or above, electromagnetic radiation, electrostatic discharge and mechanical impact can be comprehensively resisted, and the strict protection requirement for storage and transportation of electronic elements is met.

The application provides a submerged jet and mechanical impact synergistic ice damage test device, which comprises an ice material clamping system, a visible temperature control submerged cavity, a mechanical motion control system and a multi-nozzle jetting system; the mechanical motion control system comprises a servo electric cylinder and a servo motor control system; the servo motor control system comprises a programmable logic controller, and the programmable logic controller is internally provided with mechanical motion control system logic instructions for controlling the switching of the impact head to a single output mode, a reciprocating output mode and the execution of a return to the original point, limit protection and a timing trigger function; the multi-nozzle jetting system comprises a high-pressure water pump, a water supply tank, a target distance adjusting support frame, a multi-nozzle jetting coordination cavity and a jetting nozzle, and the control system of the high-pressure water pump is connected to the programmable logic controller to form a synergistic control system with the mechanical motion control system. The application can realize jetting damage and mechanical impact synergistic ice damage test by combining the advantages of mechanical impact and high-pressure water jetting in terms of impact and ablation of ice materials.

The utility model discloses waterproof pressure test device of waterproof lens, relate to testing and measurement technical field. The device includes support, water pump and water spray pipe, support and test jar screw thread cooperation, water pump sets up one side of test jar, water spray pipe sets up one side of support, and one end of water pump is communicated with test jar, and the other end of water pump is communicated with water spray pipe, and water pump is used to draw out the water in test jar's inside, and through water spray pipe injection back test jar's inside, completes the flowability of water body in test jar's inside. The device through the combination use of water pump and water spray pipe, make the originally static water body flow, can simulate the impact of real water flow to lens to a certain extent, can make the final test result, effectively reflect the mechanical impact and vibration that lens can face in actual use, guarantee the accuracy and reliability of test result, satisfy the user demand.

The utility model belongs to the technical field of power cables, and particularly relates to an IE-grade K3-class radiation-resistant power cable, which comprises a protective sleeve, ventilation and heat dissipation ports arranged at equal intervals are arranged on the outer surface of the protective sleeve, a connecting sleeve is arranged in the protective sleeve, a power cable is arranged on the inner wall of the connecting sleeve, and two groups of support rings are fixedly connected to the outer surface of the connecting sleeve. The side faces, close to each other, of each set of supporting rings are fixedly connected with supporting plates arranged at equal intervals, the side face, away from the connecting sleeve, of each supporting plate is fixedly connected with two sets of telescopic springs, and the ends, away from each other, of each set of telescopic springs are fixedly connected with connecting plates. Particularly, an elastic buffering system composed of a supporting ring, a supporting plate, a telescopic spring and a connecting plate can convert mechanical impact into spring deformation energy, the external force resisting performance is greatly improved, and meanwhile an efficient heat dissipation path can be formed by matching equidistant ventilation heat dissipation openings in the surface of the protective sleeve with an air channel between the protective sleeve and a connecting sleeve.

The utility model relates to the field of corn ear picking, especially relates to a handle type fresh corn low-loss ear picking device, including mounting frame, still including ear picking knife roll and ear picking assembly, the output end of drive gearbox is connected with pulley through, makes two sets of pulley rotate through transmission belt, drives the rotation of rotating plate through pulley rotation, thereby can make ear picking knife roll rotate, through two sets of ear picking knife roll intermeshing and opposite rotating direction, after fresh corn stalk enters the device, utilizes the effect of relative rotation, on one hand, the stalk is pulled down, on the other hand, the stalk is pinched, because fresh corn ear has longer ear handle, first pinches the ear handle when ear picking, lets the ear and ear handle separate first, greatly reduces the mechanical impact in the ear picking process, the ear picking baffle forms lateral restraint to the stalk through inclined plane design, forces the stalk to enter the meshing gap of two sets of ear picking knife roll, avoids the failure or damage of ear due to the disorderly placement of stalk and leads to ear picking.

The invention discloses a building outer wall renovation construction method. The method comprises the following steps: step 1, checking and treating an original ceramic tile wall surface; the original ceramic tile wall surface is comprehensively checked, hollow ceramic tiles and a loose base layer are removed, and protruding foreign matters and pollutants on the wall surface are cleaned; a vacant part formed after removal and cleaning is filled and leveled with polymer cement mortar; polishing the glaze layer of the ceramic tile by using a polishing machine to form a rough surface so as to enhance the binding power of subsequent materials; step 2, interface processing; 3, construction of a renovating putty layer; 4, anti-crack mortar construction and gridding cloth construction are conducted; and step 5, surface layer construction. According to the method, the original ceramic tile wall surface is subjected to polishing, interface treatment and direct coating construction, so that the operation of chiseling off ceramic tiles and mortar layers in a large area in the traditional'removing and remaking 'process is avoided, mechanical impact noise and vibration generated in the construction process are remarkably reduced, and the method is suitable for renovating construction of building outer walls in a use state; and the interference to the surrounding environment and the user is effectively reduced.

The invention provides composite cementing material building floor sound insulation mortar and a preparation method thereof, and belongs to the technical field of novel building materials. Aiming at strong-alkalinity, high-humidity and intermittent impact coupling special environments such as hospitals and the like, a geopolymer precursor composed of metakaolin and blast furnace slag micro powder and an alkaline activator are introduced and interwoven with a cement hydration product to form an alkali-corrosion-resistant composite gel matrix; meanwhile, the composite corrosion inhibitor with the pH response release characteristic is adopted, and corrosion inhibition components are released during strong alkaline invasion to form a composite protective film; and regenerated elastic particles subjected to surface silanization treatment are selected as a damping filler. Under the synergistic effect of the three components, the mutually aggravated failure cycle of chemical erosion and mechanical impact is interrupted, so that the long-term sound insulation stability, mechanical durability and corrosion resistance of the sound insulation mortar in a severe environment are remarkably improved.

The invention relates to a mounting process for a conical ring at the end part of a motor and a connecting copper pipe, which comprises the following specific steps: S1, positioning a concentric mounting device; s2, a conical ring is positioned; s3, the copper pipe concentric limiting supporting structure is positioned; s4, the copper pipe limiting assembly and the conical ring are fixed; s5, mounting a connecting copper pipe; and S6, clamping of the locking assembly on the copper pipe limiting assembly and clamping of the conical ring guiding and positioning structure on the conical ring are cancelled, and the conical ring provided with the connecting copper pipe is integrally hoisted away from the concentric installation device. The invention has the following advantages: the installation concentricity is quickly realized, the connection looseness caused by mechanical shock or thermal expansion and cold contraction is avoided, the contact resistance is reduced, and the heating and aging of the motor are avoided.