86results about How to "Structure miniaturization" patented technology

The invention discloses a multi-node negative Poisson's ratio concave honeycomb structure and a design method thereof, relates to the field of metamaterials and protection structures, and has excellent energy absorption and impact resistance. The multi-node-like negative Poisson's ratio concave honeycomb structure comprises a plurality of equivalent quarter structure cell elements which are periodically arranged. The cell elements can be discretized into a plurality of nodes, and optimal design of the structure can be achieved through optimal arrangement of node coordinates. And the optimization model realizes optimization of the Poisson's ratio by solving node coordinates. By means of the design method, accurate optimization and digital design of the structural cell elements in various complex application scenes can be achieved. And multifunctional and customized design can be realized by regulating and controlling material attributes, vertex coordinates, the number of nodes and the cross section of the rod piece. The optimized negative Poisson's ratio characteristic realized by the invention shows a huge application prospect in the fields of energy absorption buffering and impact protection, and is particularly suitable for the engineering fields of aerospace, traffic transportation, civil engineering and the like.

The utility model particularly relates to a battery box and a battery pack with the same, and aims to solve the technical problem that a cooling system of the battery pack leaks and is easy to cause bottom scraping damage. In order to achieve the purpose, the utility model provides the battery box, which comprises a battery frame, a battery box body and a battery box body, the cooling plate is laid at the bottom of the battery frame and is in thermal contact with the battery core, and a cooling liquid connecting nozzle communicated with the cooling plate is arranged on the outer side wall of the battery frame; the protective cover is arranged at the bottom of the outer side wall and mounted on the battery frame, the protective cover covers the cooling liquid connecting nozzle from bottom to top, and a buffer gap is formed between the protective cover and the cooling liquid connecting nozzle. The protective cover covers the cooling liquid connecting nozzle, the protective cover is mounted on the battery frame, and the buffer gap is formed between the protective cover and the cooling liquid connecting nozzle, so that the bottom scraping impact force at the cooling liquid connecting nozzle area can be relieved, and the risk that the cooling liquid connecting nozzle is damaged by the bottom scraping impact force is reduced.

The invention discloses a pre-tensioning method CFRP rib concrete hollow slab, a tensioning anchorage device and a construction method.The pre-tensioning method CFRP rib concrete hollow slab comprises CFRP embossed ribs, a framework structure, spiral ribs, PVC pipes, cushion blocks and concrete, the cushion blocks are arranged on the lower sides of bottom plate steel bars and the outer sides of vertical steel bars on the two sides respectively, and the CFRP embossed ribs are distributed at equal intervals, arranged in the framework structure and used for tensioning the framework structure; the spiral ribs penetrate through the prestressed CFRP embossed ribs and then are placed at the two ends of the bonding sections of the prestressed CFRP embossed ribs, the PVC pipes penetrate through the prestressed CFRP embossed ribs and then are placed at the two ends of the prestressed CFRP embossed ribs, unbonded sections are formed, concrete is poured on the periphery of the framework structure in cooperation with a mold after the CFRP embossed ribs are tensioned, the mold is dismantled after the concrete is formed, and the prestressed CFRP embossed ribs are formed. And the pre-tensioning method CFRP bar concrete hollow slab structure is formed. According to the scheme, the CFRP embossed ribs can be reliably bonded with concrete under high prestress, and bonding slippage failure is avoided. And secondly, provided anchoring is reliable, and shear damage of the CFRP ribs during tensioning is avoided.

A portable oxygen concentrator, including: a battery box, a base assembly, a molecular sieve mechanism, a compressor mechanism, an oxygen storage mechanism, an outer cover, and an operation panel. The compressor mechanism includes a compressor main body and a compressor shell. A side wall of the compressor shell is provided with an opening, where a circuit board is fixed. The compressor main body includes a compressor and a vibration damping assembly arranged at the bottom of the compressor. A first valve assembly is embedded between the compressor main body and the vibration damping assembly, and is connected with the molecular sieve mechanism and an air outlet of the compressor main body. A second valve assembly is embedded between the oxygen storage mechanism and the molecular sieve mechanism, and is connected with an inlet of the molecular sieve mechanism and the oxygen storage mechanism.

The present invention discloses a ring-type elastic metamaterial structure with medium and low frequency vibration reduction characteristics, a bottom surface is provided on one side of a solid circular ring structure, and multiple layers of circular rings are arranged periodically from the inside to the outside along the radius direction of the solid circular ring structure on the bottom surface, a trunk portion is provided in the innermost circular ring, and four wedge-shaped blocks are arranged at intervals on the outer side of each layer of circular rings, and the trunk portion is connected to the wedge-shaped blocks on each layer of circular rings through four columnar structures to form a radial elastic structure, and the radial elastic structure extends outward from the innermost circular ring and is connected to the side wall of the outermost circular ring to form a ring-type elastic metamaterial structure with medium and low frequency vibration reduction characteristics. The present invention forms a partially hollowed structure by connecting the radial elastic structure with the solid circular ring structure, and can provide excellent vibration reduction characteristics in medium and low frequency environments.

The invention discloses a quadruple optical path interferometer. A first single-face total reflection mirror and a second single-face total reflection mirror in the interferometer are obliquely arranged on a linear displacement platform and are perpendicular to each other; the beam splitter and the first target reflector are located on the two sides of the double-face total reflection mirror, and the first target reflector is perpendicular to the moving direction of the linear displacement platform. The first single-face total reflection mirror and the detector are located on the two sides of the beam splitter, and the first single-face total reflection mirror is parallel to the beam splitter. The second single-face reflector and the second target reflector are located on the two sides of the double-face holophote, the second target reflector is parallel to the moving direction of the linear displacement platform, and the second single-face holophote is parallel to the double-face holophote; and when the vertical distance from the central point of the double-sided holophote to the linear displacement platform is a first distance and the vertical distance from the central point of the double-sided holophote to the first target reflector is a second distance, the vertical distance from the central point of the double-sided holophote to the second target reflector is the sum of the second distance and two times of the first distance.

This utility model discloses a magnetic polishing needle separation device, comprising: a filter box and a filter basket; the filter basket has a filter hole group that allows magnetic needles and fluid medium inside the basket to leak out of the filter basket while the workpiece inside the basket remains inside the filter basket; an opening is provided at the top of the filter box, and a swinging device is provided inside the filter box, allowing the filter basket to be placed on the swinging device through the opening, and the swinging device swings the magnetic needles inside the filter basket to be sieved out and fall into the filter box. The magnetic polishing needle separation device with the above structure can automatically separate the workpiece from the magnetic needle, with good separation effect, high degree of automation, greatly improving production efficiency and reducing labor intensity and labor costs.

This utility model belongs to the technical field of transfer devices, and in particular to a seedling transfer device for agricultural planting. It includes a trailer frame with fences installed on three sides of the top, and a support fixedly connected to the front of the trailer frame. This utility model effectively solves the problems of low efficiency, easy damage to seedlings, and poor adaptability in traditional seedling transfer methods: the combined structure of the trailer frame, fences, and door panels not only achieves neat support and all-round protection for the seedlings, preventing slippage or crushing damage during transfer, but also simplifies loading and unloading operations through the quick-opening and closing design of the connecting rod and L-shaped buckle; the linkage of the double rotating shafts and leaf springs is compatible with tractors and other agricultural machinery for traction, improving the efficiency of large-scale transfer, while buffering the impact of field bumps on the seedlings and ensuring seedling vitality; the overall structure is lightweight and highly adaptable, catering to the needs of small and medium-sized growers and large-scale farms, reducing labor costs, and providing a guarantee for subsequent transplant survival rate and planting efficiency.

The utility model discloses a blocking device for a goods shelf track of a stereoscopic warehouse, which comprises a lifting platform and the goods shelf track, and the lifting platform can be lifted to be butted and matched with the goods shelf track; a cross beam is fixedly arranged on the side, close to the lifting platform, of the goods shelf rail, the cross beam is not higher than the traveling face of the goods shelf rail, and a blocking assembly is arranged on the side, close to the lifting platform, of the cross beam. The side, close to the goods shelf track, of the lifting platform is provided with a driving assembly corresponding to the blocking assembly, and when the lifting platform ascends to be in butt joint with the goods shelf track, the driving assembly drives the upper end of the blocking assembly to deflect to be lower than the lower end of a vehicle body of a shuttle vehicle running on the goods shelf track; through the automatic opening and closing function of the blocking assembly, the blocking structure higher than the lower end of the shuttle vehicle body can be used for preventing the vehicle from falling in the non-butt-joint state, the driving assembly triggers the blocking assembly to deflect to the safe position when the lifting platform is in butt joint, and seamless passing is achieved.

The invention relates to the field of atomic interference measurement, in particular to an atomic Raman interferometer based on a flat-topped beam. Comprising two Raman interference subsystems arranged in parallel, each of the two Raman interference subsystems comprises an ultrahigh vacuum cavity and a light path system, and the light path system comprises a flat-topped beam shaping module located on one side of the high vacuum cavity and a Raman light Doppler sensitive configuration module located on the other side of the high vacuum cavity; in the flat-topped beam shaping module, the holographic algorithm principle is adopted, the actual size of atoms in an interference area is combined to determine the size of a target flat-topped beam, the initial complex amplitude is precisely constrained, and a final diffraction phase is obtained through iterative optimization. After the Raman light passes through the diffraction phase, the Raman light is shaped into a flat-topped light beam with a target size and uniform intensity distribution at the ultrahigh vacuum cavity, so that the coherence efficiency under the same interference time is remarkably improved.

The application belongs to the field of wind power generation, and particularly relates to a small micro-wind wind power generation device, which comprises a fixed shaft, a rotating shaft sleeve, a magnetic floating bearing assembly, a blade assembly and a generator; the rotating shaft sleeve is coaxially arranged on the fixed shaft; the magnetic floating bearing assembly comprises an axial magnetic floating bearing and two radial magnetic floating bearings; the stators of the axial magnetic floating bearing and the radial magnetic floating bearings are fixedly connected with the fixed shaft, and the rotors are fixedly connected with the rotating shaft sleeve. The magnetic floating bearing assembly realizes the rotating cooperation of the fixed shaft and the rotating shaft sleeve, and the stators of the axial magnetic floating bearing and the two radial magnetic floating bearings, the rotating shaft sleeve and the fixed shaft are arranged in gaps in sequence, which can ensure the fixing stability of the stators in the axial magnetic floating bearing and the radial magnetic floating bearings on one hand, and can ensure the relatively closed position of the rotors in the axial magnetic floating bearing and the radial magnetic floating bearings and the rotating shaft sleeve on the other hand, while ensuring the lightweight structure of the rotors and the rotating shaft sleeve and reducing the wind power loss.

The utility model relates to the technical field of coal transportation equipment, and discloses a speed-adjustable energy-saving belt conveyor. The speed-adjustable energy-saving belt conveyor comprises a left supporting frame, a right supporting frame is installed on one side of the left supporting frame in parallel, an installation base is fixedly installed above the right supporting frame, an installation box is fixedly installed on one side of the upper portion of the installation base, a roller is movably installed on one side of the installation box, and the roller is movably installed on the other side of the installation box. A cold water pipe is movably mounted above the left supporting frame, one end of the cold water pipe is fixedly connected with a water pipe connector, a spray head is fixedly mounted on one side of the outer surface of the cold water pipe, a sealing sleeve is fixedly mounted above the outer surface of the cold water pipe, and a mounting connector is fixedly mounted above the sealing sleeve; and a temperature sensor is fixedly mounted above the mounting interface. According to the speed-adjustable energy-saving belt conveyor, the rotation efficiency of the conveyor is conveniently reduced, the production efficiency of a coal mine is conveniently improved, energy consumption and production cost are reduced, and the speed-adjustable energy-saving belt conveyor is conveniently used.

The automatic lifting clothes rail comprises a horizontal connecting rod, a first vertical connecting rod, a second vertical connecting rod, a first seat body, a second seat body, a first driving device, a second driving device and a control device, wherein the first vertical connecting rod and the second vertical connecting rod are connected to the two ends of the horizontal connecting rod respectively; the first vertical connecting rod is rotatably connected to the first seat body, and the second vertical connecting rod is rotatably connected to the second seat body; the first driving device drives the first vertical connecting rod to rotate, and the second driving device drives the second vertical connecting rod to rotate; the control device controls the first driving device and the second driving device to act synchronously. The automatic lifting clothes rail has an automatic lifting function, fully utilizes an upper space which a human body cannot reach to hang clothes, does not need a clothes supporting rod or an auxiliary climbing tool when hanging and taking the clothes, has an intelligent control design, is simple and convenient to use, and is safer in an operation process; the size is small, the appearance is attractive, and installation is easy.

The application discloses a high-precision six-axis motion platform, which comprises a steel frame assembly, a stone material assembly, an XY-axis assembly, an AC-axis rotary table, a Z-axis assembly and a B-axis rotary table, the stone material assembly is installed on the steel frame assembly, the XY-axis assembly is installed on a base of the stone material assembly, the AC-axis rotary table is horizontally installed on a Y-axis load plate of the XY-axis assembly, the Z-axis assembly is vertically installed on a cross beam of the stone material assembly, and the B-axis rotary table is installed on a Z-axis load plate of the Z-axis assembly. The six-degree-of-freedom independent collaborative control is realized through the brand-new modular independent partition structure and the direct drive transmission-free scheme, the transmission gap and coupling error are eliminated from the mechanical root, the platform positioning precision, the dynamic response speed and the structural rigidity are simultaneously improved, the assembly and calibration process is simplified, the production and maintenance costs are reduced, and the high-precision operation of the semiconductor and optical detection fields is adapted to the harsh working conditions.

This invention discloses a wearable integrated probe for radial artery vital sign detection and a method for detecting vital signs, comprising: an ultrasonic transducer array; the ultrasonic transducer array consists of multiple array elements, each array element including, from top to bottom, an acoustic impedance matching layer, an upper electrode, a piezoelectric ceramic sheet, a lower electrode, and a sound-absorbing layer; the ultrasonic transducer array emits ultrasonic signals towards the radial artery and receives echo signals generated by scattering from red blood cells in the blood, and calculates the blood flow velocity based on the echo signals. Compared with traditional pressure-type pulse sensors, this invention can not only detect surface pulse waves but also further obtain information related to radial artery blood flow velocity. Compared with traditional single-probe ultrasound detection methods, this invention adopts a 9-element array structure, which can improve the detection area coverage and positioning stability. Compared with large clinical ultrasound equipment, this invention has a more miniaturized and integrated structure, making it more suitable for wearable continuous monitoring scenarios.

An aluminum profile elevator door comprises a rectangular door frame formed by sequentially connecting an upper cross beam, a lower cross beam, a left stand column and a right stand column, and a glass door plate is arranged in a glass containing area of the rectangular door frame. The upper cross beam and the left stand column, the upper cross beam and the right stand column, the lower cross beam and the left stand column, and the lower cross beam and the right stand column are connected through L-shaped connecting corner connectors. The upper cross beam, the lower cross beam, the left stand column and the right stand column are made of first aluminum profiles with the same section shape and size. On the premise that the good structural strength of the elevator door is guaranteed, the structure of the elevator door is lighter, the weight of the whole elevator door can be effectively reduced, and energy consumption generated when the elevator drives the elevator door to act is reduced; the first aluminum profile is integrated with the glass inserting groove, the connecting groove and the corner connector inserting groove, the structure of the elevator door can be effectively simplified, the number of components of the elevator door is reduced, the elevator door is more convenient and faster to assemble, and the production efficiency of elevator manufacturers is effectively improved.

The utility model discloses an entry auxiliary device for archive digitization, which comprises a supporting mechanism, an adjusting mechanism for adjusting the inclination angle of archives is arranged at the top of the supporting mechanism, a positioning mechanism for connecting and fixing to complete quick disassembly and assembly is arranged at the bottom of the adjusting mechanism, and a bearing mechanism is arranged on the adjusting mechanism. The bearing mechanism is provided with a flattening mechanism used for pressing paper and keeping the archives in an unfolded state. According to the file recording device, the positioning columns slide into the limiting grooves, so that the inclination angle of files can be conveniently adjusted, and the labor intensity of recording personnel is reduced; most of the parts are symmetrical, so that the parts are convenient to replace under the condition of loss or damage; through the arrangement of the light-transmitting plate, the files placed on the bearing plate are not prone to being attached with dust and moving, the contact pins are inserted in the opened state of the files, the unfolded state of the files can be kept, and the good fixing effect is achieved while the content of the files is not shielded.

The hydraulic equipment based on the prestress stand column structure comprises a base (101), a workbench (102), a stand column (103), a movable cross beam (104) and a fixed cross beam (106), and is characterized in that the stand column (103) is of a plate frame structure, the plate frame structure is composed of four coamings (1), a plurality of rib plates (2), an upper tensioning plate (3), a lower tensioning plate (3) and tensioning steel bars (4), the rib plates (2) are fixed in the coamings (1) to form a grid structure, and the upper tensioning plate (3) and the lower tensioning plate (3) are fixed on the workbench (102). Each grid structure is provided with a tensioning steel bar (4), the upper end and the lower end of each tensioning steel bar (4) are loaded with prestress through a conical anchorage device (5) and are fixed on the corresponding upper tensioning plate (3) and the corresponding lower tensioning plate (3), and the upper tensioning plate (3) and the lower tensioning plate (3) are installed at the upper end and the lower end of the surrounding plate (1). The hydraulic device is light in structure, uniform in stress distribution, convenient to manufacture and excellent in fatigue performance, the overall performance of the hydraulic device is remarkably improved, and the manufacturing cost is reduced.

This utility model discloses a novel high-speed gear structure with radial lubrication holes, relating to the field of gear technology. It includes: a gear; multiple radially stepped oil holes opened radially along the gear; and an annular groove disposed between the lubrication holes and the delivery channel to connect the two. By setting the radially stepped oil holes, precise lubrication and reduced wear are achieved: the radially stepped oil holes directly spray lubricating oil onto the gear meshing surface, ensuring the tooth surface is always under oil film protection, reducing the coefficient of friction and wear; efficient heat dissipation and reduced temperature rise: the lubricating oil quickly carries away frictional heat through the oil holes, avoiding material softening or adhesion failure caused by localized high temperatures; lightweight structure: compared to traditional splash lubrication or complex external nozzles, integrated radial oil holes reduce additional lubrication components, making the gearbox more compact; and extended service life: uniform lubrication avoids failure modes such as pitting and spalling, significantly improving gear fatigue life.

The wire shifting mechanism comprises a wire shifting assembly and a driving part, the wire shifting assembly comprises a base, a rotating shaft capable of rotating along the axis of the rotating shaft is connected to the base, and the rotating shaft is connected with a movable shifting rod parallel to the rotating shaft through a linkage rod; the movable shifting rod is used for shifting and gathering a plurality of material wires in a wire penetrating hole adjacent to the material waiting wire hole in the brush disc; the driving piece is directly or indirectly connected with the rotating shaft; the rotating shaft is driven by the driving piece to rotate along the axis of the rotating shaft, so that the movable shifting rod linked through the rotating shaft can move to the position between the wire penetrating hole and the wire waiting hole which are adjacent to each other in the brush disc, branched wires are shifted to one side of the wire penetrating hole, and the branched wires are prevented from being wound into the next group of strands by a clamping block on the wire bending mechanism; normal operation of the silk planting process is guaranteed, and silk planting quality and efficiency are improved.

The utility model discloses a light intensity adjusting device and a laser optical system, and relates to the technical field of optics. The light intensity adjusting device comprises a beam expanding and shaping assembly and a polarization adjusting assembly which are sequentially arranged along a light path. The beam expanding and shaping assembly comprises a shaft distance adjusting piece, a first optical element and a second optical element, wherein the first optical element and the second optical element are arranged on the two opposite sides of the shaft distance adjusting piece respectively. The shaft distance adjusting piece drives the first optical element to move in the axial direction to get close to or get away from the second optical element. The polarization adjusting assembly comprises a rotation driving part, a wave plate and a polaroid, the wave plate is arranged between the polaroid and the second optical element, and the rotation driving part can drive the wave plate to rotate with the optical axis as the rotation axis; the first optical element, the second optical element, the wave plate and the polarizer are arranged along the same optical axis. The light intensity adjusting device is compact in structure, light intensity can be accurately adjusted, and the output stability and uniformity of laser are improved.

The present application provides a kind of steering device.The steering device of one form of the present application has: input device, it has input shaft and transmission shaft, the input shaft transmission is linked with operation rotation, the transmission shaft is arranged in the direction orthogonal to input shaft, and is rotated in linkage with input shaft, the input device generates rotary drive force using the rotation of transmission shaft;Speed reducer, rotary drive force is input into the speed reducer from input device, and the speed reducer outputs the rotary force around the rotation axis in the state that the rotational speed is reduced compared with rotary drive force, and the torque is enhanced;Motor, it inputs rotary auxiliary force to the speed reducer in the direction of making rotary drive force enhance;And output arm, it is connected with speed reducer, and, using the rotary force output from speed reducer, rotates around the rotation axis in any angular range.Input device is arranged on the side of one face of speed reducer.Motor is arranged adjacent to transmission shaft in the orthogonal direction orthogonal to transmission shaft, and is arranged on the side of one face of speed reducer.

The present invention discloses a mobile folding hangar that can be horizontally unfolded and folded, comprising at least two oppositely arranged mobile side walls and a folding roof installed on the top of the mobile side walls, the two sides of the folding roof are hinged to the mobile side walls, a plurality of slides are vertically arranged on the mobile side walls, the lower end of a movable strut is slidably connected in each of the slides, the upper end of the movable strut is hinged to the transverse connecting rod of the folding roof, and the lower end of the movable strut is simultaneously connected to one end of a lifting cable, the other end of the lifting cable is fixedly connected to a lifting cable winch after passing through a lifting cable fixed pulley fixed at the upper end of the slide, when the folding roof is basically unfolded, the lifting cable winch is rotated to move the movable strut upward along the slide, and the folding roof is fully unfolded. The present invention has a fast construction speed, can be walked and moved as a whole, and can be quickly repaired after being damaged.

The variable magnification optical system includes, in order from an object side, a first lens group having a positive refractive power, a second lens group having a negative refractive power, an intermediate group including two or more and five or less lens groups, and a final lens group having refractive power. When changing magnification, the interval between the first lens group and the second lens group changes, the interval between the second lens group and the intermediate group changes, the interval between the intermediate group and the final lens group changes, and all the intervals between adjacent lens groups in the intermediate group change. The variable magnification optical system satisfies a preset conditional expression.

This utility model discloses an adjustment mechanism for a testing platform used in the production of new energy vehicle batteries, relating to the field of new energy battery testing technology. It includes a base assembly and support leg assemblies. Two sets of support leg assemblies are movably mounted on both the left and right sides of the base assembly, and track assemblies are symmetrically and horizontally mounted on the top surface of the base assembly. A connecting platform component is movably connected to the top of the track assemblies. This adjustment mechanism for a testing platform used in the production of new energy vehicle batteries, through the base assembly, allows for a certain degree of structural expansion, enabling flexible adjustments to the testing platform while ensuring sufficient structural support to guarantee the stability of the vehicle battery testing. The support leg assemblies provide vertical lifting and lowering adjustment of the entire base assembly as needed. The structure of the track assembly and connecting platform component connects and combines the testing platform with it, ensuring flexibility and convenience of adjustment.

This invention discloses a biomimetic cheetah spine-pelvis coordinated elastic energy storage and burst mechanism, belonging to the field of high-speed quadruped robot power drive technology. Existing cheetah spine patents mostly focus on single-spine elastic buffering, failing to address the core mechanism of coordinated burst power through "spine bending + pelvic rotation," resulting in insufficient explosive force and low energy conversion efficiency at high speeds. This invention mimics the biological movement patterns of a cheetah's periodic spinal bending and synchronous pelvic rotation during running, designing a dual-elastic energy storage unit between the spine and pelvis. Through tendon linkage, a complete cycle of "energy storage-release-coordinated burst power" is achieved, enabling the robot to accelerate from 0 to 10 m / s in ≤0.3s with an energy recovery efficiency ≥60%, significantly overcoming the performance bottleneck of existing single-spine mechanisms. This mechanism features an original structure and novel layout, and can be widely applied to high-speed reconnaissance robots, racing robots, and obstacle-crossing robots.

This invention relates to the field of vibration reduction and noise reduction technology, specifically to a spiral acoustic black hole structure with enhanced thickness and a ring-ribbed cylindrical shell. It includes a spirally coiled portion and a mounting component for mounting the spirally coiled portion onto the structure to be vibration-damped. The spirally coiled portion includes an extended enhanced thickness portion, a damping portion, and a one-dimensional acoustic black hole strip with gradually varying thickness. The damping portion is tightly attached to the inner wall of the extended enhanced thickness portion, and its inner end is flush with the inner end of the extended enhanced thickness portion. The outer end of the extended enhanced thickness portion is connected to the end of the mounting component. A one-dimensional acoustic black hole strip is tightly attached to the inner wall of the extended enhanced thickness portion between the outer end of the damping portion and the end of the mounting component. The thicker end of the one-dimensional acoustic black hole strip is connected to the end of the mounting component, and the thinner end of the one-dimensional acoustic black hole strip is connected to the damping portion. This invention can achieve both low-frequency and wide-frequency vibration reduction with a relatively low space occupancy.