2105results about How to "Avoid noise" patented technology

The invention discloses a synthetic aperture quantitative phase imaging method based on mixed digital holography and Fourier lamination, which comprises the following steps of: installing a programmable LED (light-emitting diode) array which is annularly arranged on an off-axis digital holography system for providing inclined illumination of angle transformation, obtaining accurate low-frequency information of an object which contains noise through digital holography, and taking the information as initial estimation; and then, object high frequency is reconstructed through a Fourier lamination algorithm based on intensity measurement, so that synthetic aperture quantitative phase imaging is realized. According to the invention, the accurate low frequency provided by holography is used as initial estimation, so that the accuracy of phase recovery and wavefront aberration reconstruction is ensured, a matched illumination condition does not need to be strictly met, and meanwhile, the number of intensity graphs required by Fourier lamination is reduced; the non-interferometric phase recovery method based on Fourier lamination improves the imaging resolution to an incoherent diffraction limit, and effectively solves the inherent speckle noise problem in digital holography.

The invention relates to an underwater image enhancement method and device based on generative adversarial network multi-scale fusion, and the method comprises the steps: obtaining an original underwater image, and carrying out the preprocessing of the original underwater image; inputting a preprocessing result into an underwater image enhancement model based on generative adversarial network multi-scale fusion to obtain an enhanced underwater image; the underwater image enhancement model comprises a generator and a discriminator, and the generator is obtained by replacing the last downsampled convolution module in an encoder of the U-Net network with a multi-scale feature fusion module; and the multi-scale feature fusion module is used for extracting multi-scale fusion features by adopting multi-scale convolution, residual connection, dense connection and a global attention mechanism. The method can adapt to different underwater scenes and enhance the image quality, the color cast and brightness recovery of the underwater image are improved, the robustness of the image is kept, and color distortion and noise artifacts are avoided.

The invention relates to a digital human interaction method and system based on multi-modal understanding, and belongs to the technical field of digital human intelligent interaction. The method comprises the following steps: acquiring multi-modal data, and obtaining multi-modal features through a feature extraction model according to the multi-modal data; obtaining enhanced modal features through a knowledge enhancement model according to the multi-modal features; according to the enhanced modal features, a modal fusion feature vector is obtained through a graph representation learning model; and the big language model learns modal fusion feature vectors through a multi-head attention mechanism to obtain natural language output. The digital human understanding of multi-modal data is realized, and the smoothness, naturalness and intellectualization in the digital human interaction process are improved.

The utility model relates to the technical field of cigarette production equipment, and discloses an annular guide rail mechanism of a packaging machine, which comprises a rack and an annular guide rail arranged on the rack, the annular guide rail consists of two semi-arc guide rails and two linear guide rails, a sliding table is connected onto the annular guide rail in a sliding manner, and the sliding table is connected with the rack. The left side and the right side of the annular guide rail are symmetrically provided with inwards-sunken sliding grooves, the positions, on the two sides of the annular guide rail, of the bottom of the sliding table are provided with rolling wheels correspondingly, the rolling wheels are embedded in the sliding grooves in a sliding mode, a mold box is arranged on the sliding table, and an annular conveying belt is arranged on the inner side of the annular guide rail. And the annular conveying belt is used for driving the sliding table to intermittently move along the annular guide rail. The problem that in the prior art, when cigarette packets are conveyed on a conveying belt through a mold box frame, large shaking and noise are generated can be solved.

The invention provides a low-frequency signal receiving device, belongs to the technical field of low-frequency communication, and designs a large-gain isolation direct amplification and variable center frequency band-pass filter to replace a traditional frequency conversion receiver, so that the scale of a circuit is effectively reduced to 1 / 3 of that of the original frequency conversion receiver; front isolation amplification is designed, the two-stage automatic gain circuit has high-sensitivity 16 dB to 126 dB large dynamic range receiving capacity, isolation segmentation amplification is designed, a frequency-adjustable narrow-band filter is inserted in the middle of cascade connection of the two-stage automatic gain circuit in a penetrating mode to prevent circuit self-excitation, and direct large gain amplification stability is improved. The bandwidth of the two-stage frequency-adjustable narrow-band filter ranges from 400 Hz to 1200 Hz, the gradient coefficient is smaller than 4, and out-of-band interference can be effectively restrained. A 10dB-80dB amplifier is designed in front of a frequency-adjustable narrow-band filter, so that the noise of an LTC1068-25 switched capacitor filter is overcome, and the received noise of the whole machine is smaller than 5nV / Hz1 / 2. According to the invention, light, stable and miniaturized underwater receiving capability is realized, and the antenna is suitable for application scenarios with high requirements on power consumption and space, such as UUV and the like.

The invention provides a hybrid vehicle charging power NVH matching method, device and equipment and a medium, and belongs to the technical field of plug-in hybrid new energy vehicle type NVH control. The method comprises the following steps: performing modal identification on a steering wheel and a seat of a real vehicle to obtain a modal identification result under an idling working condition of the vehicle; calibrating a rotating speed operation interval of the engine under an idling operation condition; according to the modal recognition result, the engine rotating speed operation interval is adjusted; sweep frequency is performed on a whole vehicle power point through fixed engine rotating speed excitation to generate an output power curve; acquiring first electricity utilization power of the vehicle equipment; and carrying out power matching according to the first electric power and the output power curve, thereby knowing that the idling charging power of the whole vehicle is optimized from the perspective of NVH performance development, and systematic matching is carried out from three parts of excitation source-transmission path-response. The rotating speed of the engine is adjusted to avoid noise and vibration caused by a resonance band of the whole vehicle, and the effect that vibration and noise are small when the whole vehicle works in an idling charging mode is achieved.

The invention provides a motor ripple counting method and device, equipment and a storage medium. The method comprises the following steps: reading sequence data of M ripple periods from a starting point of a pre-acquired motor ripple sampling sequence according to an initial single period value and a sampling period value of a ripple analog-to-digital converter, taking the sequence data as a processing sequence, carrying out correlation transformation according to a corresponding local sequence, and according to a prediction period of the pre-predicted processing sequence, carrying out correlation transformation on the processed sequence; and determining a target algorithm and a measuring point set, calculating to obtain an upper peak position corresponding to the related transformation sequence based on the measuring point set and the target algorithm, further determining the number of ripples of the processing sequence, performing accumulative counting, and starting from a new starting point position according to a time sequence, repeating the steps until the motor ripple sampling sequence is processed. Through the above method, ripple counting is performed on the motor ripple sampling sequence based on the measuring point set, the calculation amount is reduced, the accuracy is improved, and the influence of serious distortion and noise is avoided.

The invention relates to an electronic equipment heat dissipation method and device, computer equipment and a readable storage medium. The method comprises the following steps: acquiring hardware configuration information of a processor and hardware configuration information of a mainboard; determining the initial rotating speed of the fan based on the hardware configuration information of the processor and the hardware configuration information of the mainboard; obtaining the load information of the electronic equipment, and determining the target electric power to which the electronic equipment needs to be adjusted in the operation process according to the load information; determining a target rotating speed of the fan according to the load information and the target electric power; and adjusting the fan from the initial rotating speed to the target rotating speed. The method can be compatible with different hardware platforms, and the heat dissipation effect of the equipment is improved.

The invention discloses a ventilator shell anti-icing device and an installation method, and relates to the technical field of air blowers. An anti-icing device for a ventilator shell comprises a heating module, a supporting module and an emptying module. The heating module comprises a coil pipe, and heating fluid is arranged in the coil pipe; the coil pipe is pressed and connected to the bottom position of the outer side wall of the fan shell through the supporting module; the emptying module comprises an emptying pipe, one end of the emptying pipe is connected with the fan shell, and a valve body is installed at the other end of the emptying pipe. The emptying pipe is communicated with the bottom of the inner cavity of the fan shell. The supporting module enables the heating module to be installed at the bottom of the outer side wall of the fan shell, the heating module heats water in the fan shell and an inner cavity of the fan shell, liquid water is prevented from being frozen into ice or solid ice is prevented from being melted into liquid water, and then the liquid water is discharged out of the fan through the emptying module, so that the anti-freezing effect is achieved, and the service life of the fan is prolonged. And the operation safety is improved.

The invention discloses an aviation main shaft tester for applying an impact load and a continuous centrifugal load and a centrifugal loading method for simulating an engine bearing test in a blade falling state, and relates to the technical field of impact tests. The problems that an existing aviation main shaft bearing testing device can only apply stable loads and cannot apply impact loads and centrifugal loads at the same time are solved. One end of a spindle is connected with a spindle motor driving shaft through a flexible coupler, the spindle is rotationally connected with a base through a first accompanying test bearing and a tested bearing, a centrifugal loading unit is located on the side, close to the spindle motor, of the tested bearing, a permanent magnet is installed at the upper end of a straight rod, a coil assembly and the permanent magnet are arranged correspondingly, and the lower end of the straight rod is connected with a thrust block. The slopes on the two sides of the thrust block make contact with the two centrifugal blocks correspondingly, and the two centrifugal blocks are connected with the main shaft through the two compression springs correspondingly. The method is used for evaluating the reliability of the engine main shaft bearing which bears the instantaneous impact load and the continuous centrifugal load in the simulated rotor blade falling state.

The invention relates to a multispectral image enhancement method and device, computer equipment and a storage medium. The method comprises the following steps: acquiring low-frequency information and high-frequency information of a target image; performing statistics on brightness level information of the first information area and brightness level information of the second information area based on the low-frequency information to obtain a first histogram and a second histogram respectively; performing stretching processing on the first histogram according to the first histogram and the second histogram, and calculating brightness mapping information according to the stretched first histogram; performing enhancement processing on the low-frequency information according to the brightness mapping information to obtain low-frequency enhancement information; according to the low-frequency enhancement information and the high-frequency information, reconstructing brightness information of the target image to obtain brightness reconstruction information; and combining the brightness reconstruction information and the color information of the visible light image to obtain a multispectral fusion image. According to the invention, the interference of the noise in the low-frequency information on the low-frequency enhanced information is eliminated, and the quality of the multispectral fusion image is improved.

The invention discloses a ghost imaging target reconstruction method based on FSD-GIRA, and relates to the technical field of digital image processing. According to the technical scheme, a fuzzy clustering algorithm is used for classifying feature values of an optical field intensity measurement matrix of an optical path detector, the feature values are reconstructed through singular value decomposition, dimensionality reduction processing of measurement data of a ghost imaging system is achieved, and the ghost imaging target reconstruction method based on FSD-GIRA is obtained. A WE-FOMP-CG algorithm is proposed, and recovery of sparse signals is optimized by combining generalized orthogonal matching pursuit, a conjugate gradient method and a multi-threshold wavelet noise reduction method; and selecting the most relevant sensing matrix array in each iteration, solving a linear equation set by using PCG, carrying out wavelet preprocessing and multi-threshold de-noising on a result, and updating and recovering estimation. The calculation efficiency and the convergence speed are improved, and a more accurate recovery result is provided in a high-noise environment. The invention also provides a WBDH algorithm, and the algorithm employs a dual denoising mechanism, including wavelet transform and a BM3D method, so as to guarantee that the restored image details and structures are reserved, and further improve the reconstruction quality of the ghost imaging target.

The invention relates to a sunshade assembly, a glass assembly and a vehicle. The sunshade assembly comprises a mounting seat; the transmission mechanism is movably arranged on the mounting seat; the driving source is arranged on the mounting base, the driving source is arranged on one side, in the first direction of the sunshade assembly, of the transmission mechanism, and the driving source is in transmission connection with the transmission mechanism; the telescopic mechanism is in transmission connection with the transmission mechanism, the transmission mechanism can drive the telescopic mechanism to stretch or retract in the second direction of the sunshade assembly, and the second direction intersects with the first direction; and the sunshade curtain is connected with the telescopic mechanism and can be unfolded along with the extension of the telescopic mechanism or retracted along with the contraction of the telescopic mechanism. The sunshade curtain is unfolded to shield the surface of the glass, so that the purpose of preventing sunlight from penetrating through the glass to enter the vehicle is achieved; and the sunshade curtain is recovered and exposes the glass again, so that the normal use of the vehicle is not influenced.

The present invention discloses a switch-on and switch-off drive mechanism for a high-voltage vacuum circuit breaker, which belongs to the technical field of circuit breakers, and comprises a box body and a vacuum chamber, wherein the vacuum chamber is mounted on the box body, and the vacuum chamber is arranged in multiple groups; a wiring port, wherein the wiring port is fixedly mounted on the side surface of the vacuum chamber, and each group of vacuum chambers is equipped with two groups of wiring ports, and the two groups of wiring ports are arranged up and down; a conductive plate, wherein the conductive plate is mounted inside the wiring port, and one end of the conductive plate extends into the vacuum chamber; and a first conductive column, wherein the upper end of the first conductive column is fixedly connected to a conductive plate of a group at the upper end. The present invention can realize that when closing or opening the switch, the initial speed is fast, and the speed becomes slower in the later stage. When performing the closing and opening operation, the initial speed is fast, and the rapid dynamic change can effectively reduce the generation of arcs, and the later speed becomes slower, which can avoid the problem that the excessive closing and opening speed causes excessive impact on the overall structure of the circuit breaker.

The invention provides a grid type telescopic device, relates to the technical field of bridge structures, and solves the technical problems that an existing comb tooth structure cannot be completely connected with two beam plates, so that the integrity of a bridge is poor, and bumping and large noise are easily caused. The device comprises a plate-shaped integrated telescopic panel, the two sides of the telescopic panel are connected with beam plate parts on the two sides of the expansion joint respectively, a plurality of telescopic ribs are arranged on the telescopic panel and form a grid type structure, and the section of each telescopic rib is of a driving trapezoidal structure with the narrow upper portion and the wide lower portion. Two adjacent beam plates are connected through the integrated telescopic panel, the telescopic ribs which can change in shape according to the temperature are arranged on the telescopic panel, the telescopic ribs are connected in a staggered mode to form the integrated seam body, and therefore the beam plates are connected in a staggered mode. Therefore, the telescopic panel has the flexibility, not only is the flexibility guaranteed, but also the integrity of the bridge can be guaranteed, and bumping and large noise can be avoided.

The high-precision piston injector comprises an injection cavity, an adapter, a piston assembly, a piston rod sleeve and a spring, the piston assembly comprises a piston head and a piston rod, and the injection cavity comprises a first cavity and a second cavity which are sequentially communicated; an adapter installation position is arranged at the end, away from the second cavity, of the first cavity, an avoiding groove is formed in the end, away from the abutting section, of the threaded section, and an oil storage groove is concavely formed in the position, corresponding to the avoiding groove, of the first cavity. The piston rod is sleeved with the piston rod sleeve, the end, close to the piston head, of the piston rod sleeve is provided with an abutting portion, the piston rod sleeve is sleeved with the spring and clamped between the abutting portion and the end, close to the second cavity, of the first cavity, and the end, away from the piston head, of the piston rod extends out of the second cavity. Direct friction between the piston rod and the injection cavity can be avoided, the service life of the injector is effectively prolonged, noise generated by friction between the spring and the piston rod when the spring is compressed can be avoided, and the mute effect is better.

The invention discloses a planting sunny and sunny shed air circulation system, and relates to the technical field of sunny and sunny shed planting, the planting sunny and sunny shed air circulation system comprises a wall body and a sunny shed, the side, away from the sunny shed, of the wall body is provided with a shady shed, and air circulation assemblies are arranged in the sunny shed and the shady shed; by arranging an air blower and an air outlet nozzle, the air outlet nozzle on the fifth air pipe sprays low-temperature air to the roots of crops in the greenhouse, the effect of rapidly cooling the periphery of the planted crops when the temperature in the sunny greenhouse is high is achieved, and the adverse effect of the high temperature on the planted crops is relieved; through the arrangement of a second conical groove, air flows to a sixth air pipe under the guidance of the second conical groove, a second open groove can adsorb water in a fixed pipe, the air is mixed with the air under the impact force of airflow to become a steam-water mixture, then the steam-water mixture is conveyed by the sixth air pipe and sprayed at a second spray head, and water is sprayed to rhizomes of planted crops. The humidity of the surface of the matrix soil is quickly improved, and the humidity around planted crops is improved.

A solid carrier fairing that can resist pulsating pressure under large cone angles includes: an end, a front cone section, a column section, an inverted cone section, a segmented longitudinal separation structure, a combined exhaust structure, and a bolt box docking frame combined structure. The end, front cone section, column section, and inverted cone section are all column structures formed by combining two half-covers, which are connected to the segmented longitudinal separation structure internally, and the end, front cone section, column section, and inverted cone section are connected in sequence through end faces to form a solid carrier fairing structure. The segmented longitudinal separation structure is used to make the solid carrier fairing structure complete before separation, and after separation, the solid carrier fairing is changed into two half-covers to ensure normal separation of the fairing; a combined exhaust structure and a bolt box docking frame combined structure are provided at the tail end of the inverted cone section to avoid the exhaust structure from affecting the internal noise. The combined exhaust structure is used to balance the pressure difference between the inside and outside of the fairing during the flight of the solid carrier rocket, and the bolt box docking frame combined structure is used to connect and carry the fairing and the control cabin.

The utility model discloses a crawler belt structure for a pneumatic crawler belt type drill carriage, and belongs to the technical field of crawler belt type drill carriages. A crawler belt structure for a pneumatic crawler belt type drill carriage comprises a chassis body, and crawler belt bodies are arranged on the two sides of the chassis body. According to the crawler belt structure for the pneumatic crawler belt type drill carriage, an external steel pipe is inserted into a rotating rod through a movable groove, a rotating disc rotates through pressing of a human body, then a threaded rod rotates towards a sealing barrel, a connecting rod rotates to drive an ejector block to move, and at the moment, a telescopic rod stretches out under the thrust of the ejector block to adjust a tensioning device; when the air cylinder body is damaged, the tensioning degree of the crawler belt body is kept, in the walking process of the crawler-type drill carriage, large noise is avoided, clearance fit between the crawler belt body and the walking gear ring is guaranteed, abrasion between the crawler belt body and the walking gear ring is reduced, and the service life of the crawler-type drill carriage is prolonged. And the service life of the track body is prolonged.

The utility model belongs to the technical field of vehicle parts, and particularly relates to a skylight sunshade curtain structure and a vehicle. The skylight sunshade curtain structure comprises a frame, curtain cloth, a curtain cloth beam, a curtain cloth shaft, a power mechanism and a transmission mechanism, the first side of the curtain cloth is connected with the curtain cloth beam, the second side of the curtain cloth is connected with the curtain cloth shaft, and the curtain cloth shaft can rotate around the axis of the curtain cloth shaft; the transmission mechanism comprises a sliding block, a first inhaul cable, a second inhaul cable and a thread rolling wheel, the sliding block is fixed to the curtain cloth cross beam and slidably connected with the frame, the thread rolling wheel is installed on the curtain cloth shaft, one end of the first inhaul cable is wound around the thread rolling wheel, and the other end of the first inhaul cable is connected with the sliding block; one end of the second inhaul cable is wound on the wire winding wheel, the other end of the second inhaul cable is connected with the sliding block, and the winding direction of the first inhaul cable is opposite to that of the second inhaul cable; the power mechanism is used for driving the thread rolling wheel or the cord fabric shaft to rotate forwards and backwards. The curtain cloth is unfolded and folded through the conversion of folding and unfolding of the first inhaul cable and the second inhaul cable on the thread rolling wheel.

The invention discloses an offset cancellation circuit, which comprises a signal conditioning unit used for processing an input signal and outputting a first current signal, an offset cancellation unit used for removing offset current in the first current signal and outputting a second current signal, and a signal processing unit used for processing the second current signal and eliminating offset voltage, the detuning elimination unit specifically comprises a chopper, a digital analog converter, a successive approximation register logic module and a comparator which are connected in sequence, and through multi-level detuning elimination, the precision of the whole circuit is improved, the processing capacity for weak signals is enhanced, the anti-interference capacity is improved, and noise is reduced; the method ensures the stability of long-time operation, and has a wide application prospect in the field of high-precision signal processing.

The invention provides a mobile air conditioner capable of changing the cold air outlet direction and provided with obliquely-installed coaxial cold and hot air ducts, which comprises a shell serving as a mounting carrier, an air inlet, an air outlet, an air outlet, an air inlet and an air outlet, the shell is hollow, and a mounting cavity is formed in the shell; the volute assembly is obliquely arranged in the mounting cavity, the volute assembly comprises an upper volute assembly and a lower volute assembly located below the upper volute assembly, an upper volute cavity and a lower volute cavity are formed in the upper volute assembly and the lower volute assembly respectively, the upper volute cavity and the lower volute cavity are coaxially arranged, and the axis of the upper volute cavity and the axis of the lower volute cavity incline to the horizontal plane; an exhaust channel is arranged on the side wall of the upper volute cavity, extends upwards, is in butt joint with a first air outlet in the top of the shell and is used for discharging air. The mobile air conditioner capable of changing the cold air outlet direction and provided with the obliquely-installed coaxial cold and hot air ducts is compact in structure, small in size, low in manufacturing cost and use cost, convenient to assemble, high in air outlet speed, long in air supply distance, low in working noise, good in use effect and long in service life.

The utility model provides an anti-vibration hammer. The damper comprises: a wire clamp structure; the wire twisting structure is connected to the wire clamping structure; the two hammer head structures are connected to the two ends of the stranded wire structure respectively, the connecting position of the stranded wire structure and the wire clamp structure is located between the two hammer head structures, the hammer head structures are made of aluminum alloy materials, each hammer head structure comprises a hammer head body connected with the stranded wire structure and two hemispherical hammer heads connected with the hammer head body, and the two hemispherical hammer heads are connected with the two hemispherical hammer heads. The two semispherical hammer heads are respectively positioned on two opposite sides of the wire stranding structure, and the curvature radius of each semispherical hammer head is greater than 50mm. According to the technical scheme provided by the utility model, the problem that corona is easy to occur when the vibration damper in the prior art is used in a high-altitude area of more than 4000 m is solved.

The clamping mechanism comprises a chuck body and four sets of air cylinders evenly arranged in the circumferential direction, and piston rods of the air cylinders are arranged in the radial direction of the chuck and fixedly installed at the front end of the chuck body. A clamping jaw assembly is fixedly installed on the cylinder body, an organ protective cover is connected between the cylinder body and the end of the piston rod, two synchronous gear rings are coaxially arranged at the rear end of the chuck body, and the cylinder bodies of the two adjacent air cylinders are in transmission connection with the two synchronous gear rings correspondingly. And therefore, the two groups of symmetrically arranged air cylinders synchronously act through the same synchronous gear ring. According to the embodiment, the power source is externally arranged, the internal space of the chuck is saved, meanwhile, later maintenance is facilitated, the power source is directly connected with the clamping execution end, transmission loss is avoided, larger clamping force is achieved, meanwhile, a sliding block structure is avoided, and the phenomenon of sliding clamping stagnation is eradicated.

The utility model belongs to the technical field of battery acquisition components, and particularly provides an acquisition lead and chip fixing device, which comprises a support plate and a plurality of lead fixing parts, and the plurality of lead fixing parts are mounted on the support plate along the routing path of an acquisition lead; a chip groove is formed in the supporting plate; the edge of the bar piece groove is provided with a buckle used for clamping the bar piece. The bottom of the chip groove is provided with an elastic sheet, and the elastic sheet protrudes out of the bottom surface of the chip groove. The fixing device adopts a special structural design, the fixing effect on the chip is good, and the chip is prevented from falling off due to extrusion; the supporting plate is further provided with a wire fixing piece installed along the routing path of the collection wire, wire harnesses are protected and fixed, damage caused by wire leakage and extrusion is prevented, the supporting plate is provided with a wire locking structure, and the subsequent tedious steps of wire locking in other modes are avoided. Based on the fixing device, the utility model also provides a battery module integrated busbar and a battery module.

The utility model discloses a multifunctional indoor air purifier which comprises a machine body, a pre-filtering net is arranged on one side in the machine body, an air filtering net is arranged on one side of the pre-filtering net, an activated carbon net is arranged on one side of the air filtering net, and mounting grooves are symmetrically formed in the outer sides of the pre-filtering net, the air filtering net and the activated carbon net. By arranging a fastening assembly, after a pre-filtering net, an HEPA filter net and an activated carbon filter net are installed, a user can rotate an adjusting lead screw to enable the adjusting lead screw to rotate along a supporting plate, and in the rotating process, an elastic telescopic frame is driven by a connecting plate to move in an empty groove along a guide plate; and in the moving process, the elastic telescopic rod makes contact with the guide plate and can be continuously stretched and enter the mounting groove through the empty groove, so that the pre-filtering net, the HEPA filtering net and the activated carbon filtering net are fastened and prevented from shaking due to airflow blowing, noise is prevented, and the user experience effect is improved.

The utility model provides a novel sliding seat unit and a seat angle adjusting mechanism adopting the sliding seat unit, the novel sliding seat unit comprises a hammer seat assembly and a lock hook installed on the hammer seat assembly, the hammer seat assembly comprises a stamping part and a plastic block installed on the inner side of the stamping part, the stamping part comprises a connecting plate, a first side plate and a second side plate, the first side plate and the second side plate are integrally formed with the connecting plate, the first side plate and the second side plate are each provided with a first through hole for a lead screw to penetrate through, and the first through holes in the first side plate and the second side plate are wrapped by the plastic block to form a lead screw hole in threaded connection with the lead screw. The connecting plate of the stamping part is provided with an arc bulge with the inner radius of R corresponding to the screw rod hole; compared with the prior art, the hammer seat assembly has the advantages that the hammer seat assembly can be designed to be short and flat, the height of the hammer seat assembly can be reduced, the weight of the hammer seat assembly is reduced, the hammer seat assembly can replace an existing product in terms of projects, and market competition is better.

The invention discloses a construction visualization intelligent management system and method based on the Internet of Things, and relates to the technical field of construction visualization, and the system comprises a data collection module, a construction risk analysis module, a construction visualization module, and a risk management feedback unit. The data acquisition module is used for monitoring laser scanning data and image data of a construction site in real time; the construction risk analysis module is used for calculating and analyzing a construction environment risk factor, an equipment operation risk factor and a high-altitude operation risk factor of each point in the construction site, and performing weighted analysis on the comprehensive construction risk of each point; the construction visualization module performs color fusion on the image acquisition data, constructs a three-dimensional model of the construction site, and is also used for drawing a three-dimensional construction risk map according to the construction risk factors of each point of the construction site and the comprehensive construction risk; and the risk management feedback unit is used for sending regional risk feedback information to the supervisor.

The utility model provides an adjustable slide rail mounting device, which comprises an adjusting component, the adjusting component comprises a multi-directional adjusting integrated assembly and a self-adaptive mounting assembly, and the multi-directional adjusting integrated assembly can be adjusted through the structural cooperation of a shell, a front-back adjusting module, a left-right adjusting module, a height adjusting module and an elastic buckle handle group of the multi-directional adjusting integrated assembly. Quick assembly and disassembly of the adjusting part can be realized, the operation is convenient, and the assembly clearance of the drawer can be adjusted in multiple directions after the drawer is installed; and through the structures of the fixing frame, the self-adaptive frame and the elastic piece matched with the self-adaptive mounting assembly, the connection stability between the drawer and the sliding rail can be always kept, the assembly precision is improved, and the use effect of the drawer is guaranteed.

The invention discloses a ventilation device of an aircraft cockpit, relates to the technical field related to aircrafts, and is used for solving the problem that a driver feels uncomfortable due to high local flow velocity of the cockpit and heat radiation generated by a high-temperature wall surface. The aircraft cockpit comprises a heat insulation and sound insulation layer and an interior structure, the interior structure is arranged on the inner side of the heat insulation and sound insulation layer, a cavity is defined by the interior structure and the heat insulation and sound insulation layer, the cavity is provided with an air outlet side, the air outlet side is provided with an airflow outlet communicated with the interior of the cavity, and the ventilation device comprises a ventilation main pipe. The ventilation device is used for guiding airflow in an air conditioning system of the aircraft to the ventilation device; one end of the distribution pipeline is communicated with the ventilation main pipe, and the other end of the distribution pipeline is communicated with an internal space limited by the interior structure; one end of the shunting pipeline is communicated with the ventilation main pipe, and the other end of the shunting pipeline is communicated with the cavity; and the regulating valve is arranged on the shunting pipeline. The ventilation device is used for ventilation and temperature adjustment of the cockpit.