96 results about "Vertical array" patented technology

The invention discloses a method for detecting radiation characteristics of a to-be-detected target in a shallow sea waveguide environment, which comprises the following steps of: 1, extracting real normal wave modal parameters of a sound source radiation signal in the shallow sea waveguide environment through an orthogonal constraint modal search method according to data received by a vertical array; 2, according to the real normal wave modal parameters, through a normal wave expression in a waveguide environment, performing inversion to obtain a sound field of the whole shallow sea waveguide; and step 3, acquiring sound field information required in the sound field of the shallow sea waveguide, mapping the sound source information into the free space by using the reciprocity theorem, realizing sound field migration from the shallow sea waveguide to the free space, and further acquiring the radiation characteristics of the target to be measured in the free space. The method is used for obtaining the radiation characteristics of the to-be-measured target in the free space according to the data received by the vertical array.

The application belongs to the technical field of medical detection, and discloses a medical detection kit, which comprises a hinge-connected box body and a box cover, a plurality of placement jacks are arranged in a vertical array in the box body, a gas bag groove is horizontally arranged on one side of the same row of placement jacks in the box body, the gas bag groove is in communication with the placement jack and has an overlapping part, a limiting gas bag is arranged in the gas bag groove, a plurality of sliding grooves are formed in the box body, the sliding grooves are in communication with the gas bag groove and are perpendicular to each other, a strip-shaped pressing block is vertically and slidably arranged in each sliding groove, and a pressing column is fixedly connected to the inner side of the box cover and corresponds to the position of the strip-shaped pressing block. The placement jack and the limiting gas bag are staggered, when the box cover is closed, the pressing column presses the pressing block, the pressing block extrudes the limiting gas bag, the limiting gas bag is more full, the limiting gas bag is used for flexibly clamping the reagent tube in the placement jack, the clamping stability is better, the reagent tube is not easy to be damaged, and the kit has good shock buffering performance.

The present application relates to numerical control gang drill installation detection technical field, especially point to a kind of numerical control gang drill installation calibration detection device and method thereof, it includes base, gantry support installed on base, detection panel slidingly arranged in one side of gantry support and gang drill mounting seat group installed on base, gang drill mounting seat group includes at least two gang drill mounting seat bodies, two gang drill mounting seat bodies are arranged in parallel with interval, the upper end surface of each gang drill mounting seat body is provided with gang drill installation guide rail along its length direction;The side of gantry support is horizontally provided with transverse guide slide rail, detection panel slidingly arranged in transverse guide slide rail, gang drill installation guide rail is perpendicular to detection panel, and detection panel is detachably equipped with detection assembly.The present application is ingenious in design, shortens the time of numerical control gang drill vertical array whole assembly on numerical control gang drill equipment and calibration adjustment time, improves installation precision and production efficiency, reduces operation difficulty.

The invention particularly relates to a multi-vertical-array layout optimization method based on deep-sea interference sound field spatial distribution, which belongs to the field of underwater acoustic detection and comprises the following steps: performing sliding filtering on an original propagation loss curve received by a bottom-supported vertical array, extracting extreme points to construct an upper envelope line and a lower envelope line, and calculating an average value to obtain average interference sound field intensity; determining the width of interference fringes according to the maximum point spacing of the smooth curve, and building a single-node detection probability curve in combination with the average interference sound field intensity and a detection rate attenuation factor; a detection threshold and a system-level detection probability are obtained through Monte Carlo simulation by using a Chair-Varshey optimal fusion rule, and an optimal layout is determined by taking detection high-quality factor maximization as a standard. The method is used for solving the layout optimization problem of deep-sea wide-range underwater target multi-vertical-array passive detection.

The present invention belongs to the technical field of underwater acoustic vector signal processing, and specifically relates to a method for joint estimation of multiple parameters of broadband moving targets based on vector arrays. The present invention performs sub-band division on the broadband sound pressure and velocity signals of noisy targets received by the vector vertical array to construct an acoustic field interference structure containing target parameter information; reflects the interference structure to the time and space domain through vector beamforming, and extracts the interference structure and vertical arrival angle; combines the interference structure and vertical arrival angle to estimate the target depth based on the zero-point periodicity characteristics of the interference structure; cross-correlates the sound pressure and velocity signals received by the vector hydrophone to construct sound pressure and velocity cross-correlation velocity interference fringes, and solves the velocity parameters based on the characteristics of the fringes containing physical quantities. The present invention uses a vector vertical array to obtain the target excitation sound field interference structure and the target vertical arrival angle, and is suitable for fields such as long-range early warning and target detection of underwater targets.

This utility model provides an anti-static interference LED display driver module, relating to the field of LED display technology. It includes a base frame with a mounting bracket on one side. The mounting bracket has two through holes arranged in a horizontal and vertical array on its surface. Two limiting holes are located in the middle of each of the two through holes, and limiting posts are located at the top of each of the four limiting holes. A display driver board is located on one side of the base frame. During installation, the base frame is pressed against the mounting bracket, causing the fixing bracket and limiting posts to pass through the through holes and limiting holes respectively. During this process, the mounting bracket pushes the locking block back into the fixing bracket. When the fixing bracket has completely passed through the through holes, the locking block loses the pressure of the mounting bracket and pops out again under the action of a return spring, locking the mounting bracket. Simultaneously, the four limiting posts restrain the base frame, thus completing the installation of the LED display driver module. The entire installation process only requires pressing, eliminating the need for mounting bolts and solving the drawback of having to align and tighten bolts one by one during installation.

This invention relates to the fields of underwater acoustic engineering, marine engineering, and sonar technology, and particularly to a passive sound source localization method and system based on a vertical array in a deep-sea environment. The method includes: receiving the time-domain signal radiated by a target sound source using a large-aperture vertical array deployed on the seabed in the deep sea; performing a fast Fourier transform on the time-domain signal to obtain the corresponding signal spectrum; using a spatial power spectrum estimation method to obtain the frequency-domain beam output sound field of the signal spectrum of different array elements at different angles of arrival; calculating template values ​​for the direct wave angle of arrival, the sea surface reflected wave angle of arrival, the direct wave arrival time delay, and the sea surface reflected wave arrival time delay under different assumed sound source distances and depths; combining the four template values ​​with the frequency-domain beam output sound field at different angles of arrival to obtain a passive sound source localization cost function for different sound source distances and depths, thereby achieving the estimation of the target sound source distance and depth.

The present invention belongs to the technical field of underwater acoustic signal processing, and specifically relates to a method for estimating the depth of underwater targets based on the broadband interference fringe structure of deep-sea vector sound fields. The present invention receives the sound field information composed of the direct wave and the sea surface reflection wave of the target near the sea surface through a reliable sound path through a vector vertical array deployed at a critical depth, and intuitively reflects the broadband interference fringe structure and the target vertical arrival angle spatial information contained in the received noisy broadband sound pressure signal and broadband vibration velocity signal through a vector array signal processing method, and uses the relationship between the broadband interference fringe structure and frequency of the time-frequency distribution and the target vertical arrival angle to estimate the target depth. The present invention uses a vector vertical array to obtain the target excitation sound field information, and uses vector beamforming technology to map the characteristics of the sound field to the spatial domain, without the need for precise measurement and acquisition of ocean environmental parameters.

The present invention aims to enable the installation of vibration damping devices on columns while minimizing cross-sectional loss of the columns. [Solution] A vibration damping device (10) for damping vibrations in a building (1) having a pair of columns (2) standing side by side comprises: a pair of holders (20) that each hold the pair of columns (2); a pair of brackets (40) that extend from each of the pair of holders (20) toward the center between the pair of columns (2); a pendulum (60) supported by the pair of brackets (40) that swings up and down about the center between the pair of columns (2) in accordance with the vibration of the pair of columns (2) and the pair of brackets (40) during an earthquake; and a pair of dampers (80) connected to the left and right ends of the pendulum (60) and fixed to the pair of brackets (40).

The utility model relates to door board transportation storage technical field, concretely relates to a door board transportation storage device. Including frame, the side vertical array fixed setting of frame has a plurality of horizontal arrangement's locating rod. The utility model discloses, respectively inserting the longitudinal beam both ends in corresponding insertion gap, ensure that the baffle and the crossbeam far from the side contact of locating rod, then rotate threaded rod drive slider drive movable frame to move down, make movable support strip under the action of gravity rotate downward around the hinge shaft, until its lower side wall and corresponding locating rod contact, with the upper side wall of fixed support strip jointly constitute an inclined placement plane, movable frame lower end moves to the longitudinal beam below simultaneously, with the baffle cooperation fixes the longitudinal beam on the frame, realized as the quick installation of prefabricated integrated structure's support assembly, through the installation support assembly, can reduce the interval of all placement planes on the adjacent movable support strip simultaneously, make the device suitable for a variety of size's door board.

The application discloses a kind of radiation characteristics detection methods of target to be measured under shallow sea waveguide environment, comprising the following steps: step 1: according to the data received by vertical array, by orthogonal constraint mode search method, extract the real normal mode parameters of sound source radiation signal in shallow sea waveguide environment;Step 2: according to the real normal mode parameters, by normal mode expression in waveguide environment, the sound field of entire shallow sea waveguide is obtained by inversion;Step 3: obtain the sound field information required in the sound field of shallow sea waveguide, utilize reciprocity theorem to map sound source information to free space, realize the sound field migration from shallow sea waveguide to free space, and further obtain the radiation characteristics of target to be measured in free space.The method of the application is used to obtain the radiation characteristics of target to be measured in free space according to the data received by vertical array.

The invention relates to a shallow sea equivalent earth sound model inversion method based on sparse Bayesian learning dispersion curve estimation, and the method comprises the following steps: 1, carrying out the time-frequency transformation of broadband sound source data received by a shallow sea vertical array, and obtaining multi-frequency-point and multi-snapshot frequency domain vertical array data; step 2, constructing a horizontal wavenumber hypothesis interval and a modulus depth function hypothesis space corresponding to each frequency point according to a water layer sound velocity profile and environmental prior information; and step 3, based on a normal mode sound propagation theory, frequency domain vertical array data of each frequency point is modeled as a weighted sum of each mode depth function in the mode depth function hypothesis space, and a weight vector is a horizontal wave number spectrum. According to the method, the sound field intrinsic characteristic, namely the dispersion curve, irrelevant to the sound source is directly extracted from the vertical array data, and an equivalent earth sound model concept is utilized, so that an earth sound parameter inversion scheme which is more stable, is more tolerant to model mismatch and can effectively avoid attenuation coefficient coupling influence is realized.

The present invention relates to a method for estimating the radiated sound pressure of a shallow water complex target based on a near-field vertical array, comprising the following steps: S1, using a vertical array equal to the water depth to measure the near-field sound pressure of a sound wave emission point, and measuring a virtual cylindrical measurement surface that can completely enclose the sound wave emission point at different orientations of the sound wave emission point; S2, substituting the measurement data of each array element point of the vertical array into the general solution form of the radiated sound pressure in the virtual cylindrical coordinate system and constructing a matrix equation; S3, then solving the coefficient matrix of the radiated sound pressure, substituting the obtained coefficient matrix into the modal expansion form solution of the radiated sound pressure in the virtual cylindrical coordinate system, and calculating the radiated sound pressure of any point outside the virtual cylindrical measurement surface in the shallow water ocean waveguide. The beneficial effect is that in the ocean waveguide, the far-field sound pressure is estimated using the near-field vertical measurement data array.

The utility model discloses a wooden column foot fixed connection structure which comprises a wooden column foot body and a base arranged at the lowermost end of the wooden column foot body, a ground pile is arranged in the inner position of the upper side of the base, a bottom plate is arranged on the upper side of the ground pile, a plurality of inserting plates are vertically arranged on the lower side of the bottom plate in an array mode, and the inserting plates are connected with the base. An upper plate is arranged at the outer position of the middle of the upper side of the bottom plate, a fixing column is arranged at the middle position of the upper side of the upper plate, sector plates are arranged at the four corners of the fixing column correspondingly, a firm bottom foundation is formed by a connecting structure and ground piles through combination of concrete pouring and bottom plate inserting plates, and the stability of the whole structure is improved; the wooden column foot main body is fixed in the connecting structure through the inserting groove in a sleeving and embedding mode, shaking of the wooden column foot main body is effectively relieved, the anti-seismic performance of the structure is improved, the fixing bolts penetrate through the protection plate and are inserted into the wooden column foot main body, the stability of the connecting structure is ensured, and the wooden column foot main body is prevented from being separated from the connecting structure.

The utility model discloses a traffic information prompting door frame, which relates to the technical field of traffic information boards and comprises a side frame and a display board, symmetrical sliding rails are arranged on one side of the side frame facing the display board, a row of adjusting holes in vertical array are arranged on the sliding rails, and the display board positioned on the side frame is slidably connected with the sliding rails. A display screen is arranged in front of the display board, a connecting column is fixedly arranged on the side edge of the rear portion of the display board through a fixing base, an inserting sleeve is fixedly arranged on the other side of the display board, extrusion plates are fixedly arranged on the portions, located on the upper side and the lower side of the inserting sleeve, of the display board, and spring columns are arranged on the extrusion plates in a sleeving mode. Limiting blocks are fixedly arranged on the sides, facing the connecting columns, of the spring columns, and limiting grooves are formed in the positions, corresponding to the limiting blocks, of the spring columns. The information door frame is simple in structure, stable in structure, high in practicability and suitable for popularization, the height and the width of the information door frame can be adjusted, and the single display boards can be conveniently mounted and dismounted.

The invention provides a steel structure commercial building super-large inclination adjustable curtain wall hanging plate structure which comprises a plurality of main control positioning beams which are arranged on the outer side of a concrete structure beam of a building body in a transverse array mode, and the main control positioning beams are vertically arranged; the multiple direction control adjusting cross beams are arranged in a vertical array mode, all the direction control adjusting cross beams are arranged in the horizontal direction, and the rear ends of the direction control adjusting cross beams are fixedly connected with the main control positioning beam. The auxiliary control positioning beam is fixedly connected near the front ends of the direction control adjusting cross beams, and the concrete structure beam is connected with the auxiliary control positioning beam in a supporting manner; the hanging plate is fixedly connected with the upper end of the secondary control positioning beam; the curtain wall is fixedly arranged on the outer side of the hanging plate and is parallel to the hanging plate; the extending lengths of the front ends of the direction control adjusting cross beams are different, and the front-back positions of the auxiliary control positioning beams are different, so that the inclination direction and the inclination degree of the curtain wall are positioned. Errors can be conveniently controlled and compensated, the inclination of the curtain wall can be conveniently adjusted, the construction difficulty is reduced, and the cost is saved.

The application provides a sparse Bayesian learning-based matching wideband modal phase velocity inversion geoacoustic parameter method and system, which uses the receiving signals of a vertical array, extracts local modes by using multi-distance sparse Bayesian learning, and removes the narrowband limitation of block sparse Bayesian; the wideband modal phase velocity is used for matching inversion of geoacoustic parameters, and the decoupling of geoacoustic parameters is realized. The application has the advantages that prior knowledge of seabed parameters is not required, the depth range of mode extraction is not limited to the aperture of the VLA and can be applied to a non-uniform vertical array; when the geoacoustic parameters are inverted, the influence of the terrain on the propagation path is not considered, and the geoacoustic parameters of any terrain can be inverted; the position information of the sound source is not required, and the problem that the inversion result is inaccurate due to inaccurate sound source position is avoided; meanwhile, the sound source signals of multiple distances are used for inversion, so that the inversion of the geoacoustic parameters is more robust and accurate.

An energy storage assembly for storing electrical energy. The assembly includes a plurality of cabinets, each cabinet having an input terminal for receiving electrical energy and a negative terminal for outputting electrical energy. Each cabinet also includes a plurality of energy storage modules. The modules are stacked in a vertical array along the cabinets. The modules each include two or more rows of energy storage cells, each row of energy storage cells having its own positive and negative terminals. The rows of energy storage cells within each module are electrically connected in series. Additionally, the energy storage modules are electrically connected in series between the positive and negative terminals of their respective cabinets. Additionally, each of the plurality of cabinets is electrically connected in series.A chilled gas coolant flows along the rows of energy storage cells to cool the cells during operation of the energy storage assembly.

The application discloses a GaN chip packaging structure and method based on vertical interconnection and gradient heat matching, which comprises a substrate, a wave-absorbing layer is embedded in the interior of the substrate, a copper wire layer is installed on the substrate, and a heat transition layer is sprayed on the copper wire layer; a GaN chip is installed on the heat transition layer, a vertical array of carbon nanotubes is arranged on the gate region of the GaN chip, and the output end of a driving chip is connected to the carbon nanotubes. High-frequency performance breakthrough: parasitic inductance is reduced by more than 95%, thermal reliability is improved: CTE mismatch problem is completely solved, high-frequency noise suppression: wide-band shielding efficiency is improved by 10 times.

The utility model relates to a lifting air cylinder for washing tank, including lifting air cylinder body, the left and right sides of lifting air cylinder body all are provided with first U type mounting plate, the inside of two first U type mounting plates all are provided with first locating slot, first locating slot is three in vertical array, the side of two first U type mounting plates all is fixedly connected with first fixed component, first fixed component is three in vertical array, the side of two first U type mounting plates all is provided with second U type mounting plate, the inside of second U type mounting plate is provided with second locating slot, second locating slot is three in vertical array, the side of second U type mounting plate is fixedly connected with second fixed component, second fixed component is three in vertical array, the utility model discloses a lifting air cylinder solves the pollution product caused by the wear and tear of rope and other components of the type hoisting operation mode, and personnel operation is convenient and responds fast, and the action is agile, and maintenance is simple.

The utility model relates to the technical field of inspection wells, in particular to an inspection well for a drainage pipe network, and solves the problems that in the prior art, when a traditional inspection well is used for adjusting the lengths of a safety rope and a safety belt, complex operation steps are needed or more fixing tools are depended, so that the labor intensity of operators is increased, the preparation time is prolonged, and the production cost is reduced. The operation efficiency is reduced. Certain safety risks exist, and the practicability of the inspection well is reduced. The inspection well for the drainage pipe network comprises a well body, a plurality of shells are arranged on the inner wall of one side of the well body in a vertical array mode, clamping grooves are formed in one sides of the shells, and a clamping block is connected to the position, located in the clamping groove, of one shell in a clamped mode. According to the utility model, the risk that personnel accidentally fall during inspection operation is effectively avoided, the operation efficiency and the operation convenience are improved, the workload of the personnel is reduced, and the operation safety and the practicability of the inspection well are improved.

The utility model relates to a commodity shelf with a hidden cover plate, which comprises a shelf body, the bottom of the shelf body is fixedly connected with a bottom plate, a plurality of groups of storage components are arranged above the bottom plate, the plurality of groups of storage components are arranged in a vertical array mode, each storage component comprises a storage box, the cover plate is arranged in front of the storage box, and the cover plate is arranged on the bottom plate. A layer plate is arranged above the storage box, the four corners of the layer plate are fixedly connected with the rack body, and the left side and the right side of the bottom of the layer plate are fixedly connected with protruding plates. According to the storage box, the cover plate is arranged, specifically, after the storage box is installed, when articles need to be taken and placed, the cover plate is turned upwards and then pushed into the shelf board, so that the front portion of the storage box is opened, the hidden function is achieved, a user does not need to continuously support the cover plate, operation of the user is more convenient, and use is more convenient; and finally, the cover plate is pulled and turned over downwards, so that the front part of the storage box can be sealed.

A method for fabricating a 3D vertical array of memory cells is disclosed. The method includes forming a stack of layers of dielectric material on a substrate, including first and second layers of dielectric material alternating with each other; forming a hole through the stack of layers of dielectric material, the hole exposing the substrate; selectively removing the second material layers via the hole to form cavities between adjacent first layers of dielectric material; filling the cavities with a conductive material via the hole to form corresponding layers of conductive material; forming a first memory cell access line from the layers of conductive material; performing conformal deposition of a chalcogenide material via the hole; forming a memory cell storage element from the deposited chalcogenide material; filling the hole with a conductive material to form a corresponding second memory cell access line.

The invention relates to a PINN noise field continuation-based seabed reflection loss high-precision estimation method, which comprises the following steps of: 1, giving an N-element vertical receiving array, the depth of each array element and noise field data of a frequency point received by the N-element vertical receiving array; 2, dividing M distance grids according to the frequency and the computational domain for processing the noise field data, and step 3, designing a physical information neural network (PINN) for noise field data continuation, and training the network by taking the collected noise field data as input to obtain a trained NoisePINN network. According to the method, the limitation of vertical receiving array space sampling is effectively broken through, the vertical array aperture is equivalently expanded, and a seabed reflection loss result with higher precision and resolution can be obtained.

The utility model relates to the technical field of radiators, in particular to a novel radiator with a needle-column-shaped fin high-density arrangement structure, which comprises a substrate, the substrate is provided with at least one heat source contact surface, mounting holes are arranged at corners of the heat source contact surface so as to facilitate fixation, and a plurality of needle-column-shaped fins are arranged on the non-contact surface side of the substrate in a high-density vertical array mode. The cross section of the substrate is polygonal or circular, turbulent flow grooves (preferably V-shaped grooves or trapezoidal grooves) are formed in the top of the substrate so as to increase air turbulence and improve the heat dissipation effect, the projection area of the needle-column-shaped fins accounts for 70%-95% of the total area of the non-contact face of the substrate, the space is utilized to the maximum extent, the needle-column-shaped fins are made of copper alloy, aluminum alloy or metal matrix composite materials, and therefore the heat dissipation efficiency is improved. And the surface of the needle-column-shaped fin is covered with the nano oxide layer, so that the heat-conducting property and the corrosion resistance are enhanced, the needle-column-shaped fin can be arranged in a staggered array or hexagonal close packing manner, and the airflow path is optimized.

This invention provides a tolerance-based distance estimation method and system for dual-channel acoustic imaging in Arctic ice regions based on normal mode-constrained modes. The method includes: using a normal mode model to simulate and predict the frequency domain sound pressure, phase velocity, group velocity, and mode covariance matrix of the experimental sea area in the Arctic ice region; using Fast Fourier Transform (FFT) to transform the time-domain signal received by the vertical array in the ice region into frequency-domain data; obtaining the sound velocity and depth corresponding to the upper boundary, channel axis, and lower boundary of the Beaufort waveguide based on the dual-channel sound velocity profile of the experimental sea area; obtaining the order index of the Beaufort waveguide modes based on the intersection of the phase velocity dispersion curve with the sound velocity at the upper boundary and channel axis of the Beaufort waveguide; performing mode separation using a matched filtering mode filtering method to extract the modes confined in the Beaufort waveguide; and constructing a tolerance-based distance estimation operator for ice and seabed based on the extracted modes in the Beaufort waveguide to achieve tolerance-based estimation of underwater target distances.

The invention discloses a composite differential beam forming method based on a small-scale vector vertical array under the influence of a multipath effect, belongs to the technical field of sonar array signal processing, and solves the problem of array gain reduction caused by signal coherence superposition of a traditional differential beam forming method under the multipath effect in the prior art. According to the invention, a small-scale vector vertical array is constructed to obtain sound pressure and vibration velocity signals, a spatial smoothing MUSIC algorithm is used to estimate a multipath signal incident pitch angle, an explicit expression of a composite steering vector and a weighted vector is constructed, and composite differential beam forming is realized to obtain array gain. According to the method, the problem that the array gain of traditional differential beam forming is reduced under the multipath effect is relieved, multipath interference in waveguides can be processed, the weighted vector is unified with an existing method, the method can adapt to different scenes, and the robustness and adaptability of an underwater sonar system in the multipath environment are enhanced.

The present application belongs to the technical field of underwater target detection, and discloses a water target depth coherence estimation method and system. A sensor array carried by a waterborne body receives a single snapshot signal of target radiation. In the case where the sound velocity profile is known, a potential normal wave orthogonal mode space of the sound field is constructed, and then the sparsity of the sound field projection in the orthogonal mode space is used as a constraint to estimate the normal wave parameters (i.e. normal wave horizontal wave number and vertical mode function) and depth-related mode characteristics (i.e. mode amplitude). The depth of the underwater target is coherently estimated by using a mode polarity search method. The present application uses a single frequency component in the single snapshot noise signal of target radiation to realize target depth coherence estimation in a marine environment where the seabed is unknown. The accuracy of polarity estimation is improved by using a KAN network learned theoretical depth ambiguity function, and the present application can be used for underwater target positioning, identification, etc., and is suitable for vertical array subsurface platforms, vertical array floating platforms, etc.

The utility model relates to a hanging tool, in particular to a multi-layer back-to-back type anodizing hanging tool. Comprising a hanging plate, a plurality of rotating shafts are vertically and rotatably arranged on one side of the hanging plate in an array mode, a plurality of hooks are fixedly connected to the circumferential side walls of the rotating shafts in a transverse array mode, and a rotating mechanism is arranged at the position, close to the edge, of one side of each rotating shaft of the hanging plate and used for driving the rotating shafts to rotate synchronously. Two foot plates are hinged to the positions, close to the bottom, of one side of the hanging plate in a bilateral symmetry mode. According to the utility model, when a worker twists the worm to enable the plurality of half worm gears to drive the corresponding rotating shafts to rotate, the lowest rotating shaft drives the connecting rod to rotate in the same direction through the transmission mechanism, so that the rotating shafts drive the hooking rod of the hook to rotate upwards to be parallel to the hanging plate, and the foot plate also rotates to be parallel to the hanging plate; therefore, the occupied space of the hanging tool is reduced, a worker can conveniently stack and store a plurality of hanging tools, and the space utilization rate of the storage position of the hanging tool is improved.

The invention relates to the technical field of charging piles, and discloses an energy-saving electric vehicle direct current charging pile which comprises a fixed assembly and a movable assembly, the fixed assembly is fixedly arranged on the right side of the interior of a storage shell, the movable assembly is movably arranged on the left side of the interior of the storage shell, and the fixed assembly and the movable assembly are both arranged in a vertical array mode. And a movable assembly is arranged between the two fixed assemblies. When the charging cable needs to be stored, a user enables a part of the charging cable to penetrate through the storage groove and be clamped in the storage cavity, the pressure sensor receives a signal that the charging cable is clamped and then transmits the signal to the control system, the control system controls the movable assembly to be started, the multiple movable shafts are pushed by the power piece to synchronously and horizontally move, and the charging cable is stored in the storage cavity. According to the charging cable folding device, the charging cable can be folded vertically and can be effectively stored in the storage cavity of the storage shell in cooperation with the multiple fixing assemblies, so that the charging cable is fully protected, abrasion of the charging cable is reduced, and meanwhile the use safety is improved.