45results about How to "Multiple flexibility" patented technology

The invention belongs to the technical field of path planning, and particularly relates to a robot path planning method based on an RRT improved algorithm, and the method comprises the steps: obtaining environment space information needing path planning, defining parameters, and obtaining the minimum distance between a coordinate point and an obstacle; a bidirectional random tree is constructed and initialized, and sampling points are obtained through a sampling function; finding a nearest neighbor point, selecting a new node, carrying out safety distance judgment, and if not, carrying out sampling again; generating a discretization path; setting a cost function during local node expansion; performing loop iteration to generate discrete point cost, taking a minimum cost value, searching an optimal node and inserting the optimal node into the current tree; an overall path Path after local optimization is obtained; and discretizing the whole Path, setting a cost function of nodes during global planning, selecting the node with the minimum cost for reconnection, and finally obtaining a smooth and effective optimal path. According to the method, the optimality and smoothness of the path are effectively improved.

The invention discloses a virtual power plant adjustable potential comprehensive evaluation method, system and equipment giving consideration to communication and action time delay. According to the method, a communication system time delay model, an equipment action time model and a communication reliability model are constructed by constructing a cloud edge collaborative network system framework for regulating and controlling a virtual power plant. And then, establishing a virtual power plant maximum adjustable potential evaluation model based on timing delay step length search by using a k-shortest path algorithm. And finally, providing a method based on a near-end strategy optimization algorithm to solve the optimization model. According to the method, comprehensive evaluation of the adjustable potential of the virtual power plant considering the influence of the communication system and the resource action time is accurately described, a decision basis is provided for the virtual power plant to participate in primary and secondary frequency modulation and peak regulation of the power system, and frequency stability and power and electric quantity balance of the power system can be supported.

According to the offshore wind power generation ship, a ship body serves as a base body, and a plurality of cross beams and vertical rods are arranged on the two sides of the ship body, so that the layout of blades is more flexible, the angle or position can be adjusted according to changes of the wind direction and the wind speed, and therefore the wind energy capturing efficiency is maximized; the adaptability and stability of the wind power generation ship under different sea conditions and climate conditions are enhanced, the blades are connected with the power generation unit, rich wind energy resources on the sea can be efficiently captured and converted into electric energy, meanwhile, the power generation unit is directly connected to the ship body driving unit, instant conversion and utilization of energy are achieved, and the energy utilization rate is increased. According to the integrated design, the energy transmission process is simplified, energy loss is reduced, the whole system is more compact and efficient, and reliable guarantee is provided for autonomous navigation and power supply of the ship.

The invention relates to the technical field of batteries, and provides a multifunctional additive, a solid electrolyte and a preparation method and application thereof, the additive comprises fluoroaniline and derivatives thereof, the structural general formula of the additive is # imgabs0 #, R1 comprises fluorine atoms, R2 is a single bond or alkyl, and x is an integer of 1-5. According to the invention, fluoroaniline and a homologue thereof are taken as the solid electrolyte additive, and the additive can generate relatively strong interaction with anion groups of various lithium salts due to the amino group, so that dissociation of the lithium salts is promoted, and the ionic conductivity of the solid electrolyte is improved to 10 <-4 > S / cm or above; meanwhile, the oxidation resistance of the solid electrolyte is also improved, and a practical research scheme is provided for developing a high-performance solid lithium ion battery.

The utility model relates to the technical field of projection equipment, in particular to a projector. According to the projector, the projector at least comprises the host, the seat body and the support, and the seat body is configured to be at least composed of the loudspeaker box, so that the host and the loudspeaker box are two independent components. Therefore, on one hand, the design of the sound box is more flexible, and the sound effect of the sound box is improved; and on the other hand, the sound box does not need to be considered when the components in the host are arranged, so that the stacking of the components in the host has more flexibility and space, the volume of the host can be reduced, and the arrangement of the components in the host is also facilitated. In addition, the main machine and the base body are connected through the support, assembling is convenient, and the design flexibility of the main machine and the base body can be improved. Therefore, the projector provided by the embodiment of the utility model not only facilitates the design of the sound box and the improvement of the sound effect of the projector, but also facilitates the reduction of the size of the host of the projector and the improvement of the arrangement convenience of all parts in the host.

The invention relates to a small steamed bun making process, which belongs to the technical field of food making, and makes the made wrappers soft and elastic, fine and smooth in mouthfeel and chewy by accurately controlling the proportion of plain flour, warm water, yeast and baking powder and the fermentation time, temperature and humidity. The optimized wrapper not only can better wrap the stuffing, but also can keep good taste after being steamed, and brings unique taste enjoyment to consumers, in the aspect of stuffing preparation, seasonings such as pork stuffing, scallion and ginger water, salt, sugar, light soy sauce, oyster sauce, sesame oil and white pepper powder are reasonably matched, and the dosage range of the seasonings is strictly controlled, so that the stuffing is rich and delicious in taste, and the taste of the stuffing is greatly improved. And various seasonings are mutually fused and well arranged. The addition of the scallion and ginger water effectively removes fishy smell and enhances aroma, the accurate proportion of the salt, sugar and other seasonings enables the taste to be moderate in saltiness, the light soy sauce and the oyster sauce improve the delicate flavor, the sesame oil increases the aroma, and the white pepper powder increases a slight spicy taste, so that rich taste is created together, and different taste requirements are met.

The utility model is suitable for the technical field of wardrobes, and provides a wardrobe with ventilation side walls, which comprises a wardrobe body, and a storage cavity is formed in the wardrobe body; an interlayer is arranged between the cabinet body and the storage cavity; the ventilation piece is arranged in the hollow interlayer; the ventilation piece comprises an air supply cylinder arranged in the hollow interlayer on one side; the upper end and the lower end of the air supply barrel communicate with air supply pipes. The side, extending to the storage cavity, of the air supply pipe communicates with a plurality of vertically-arranged air supply branch pipes. The exhaust cylinder is arranged in the hollow interlayer on the other side; the upper end and the lower end of the air supply barrel communicate with exhaust pipes. According to the utility model, the ventilation piece is arranged in the hollow interlayer, so that the ventilation piece can be prevented from being damaged, air circulation in the cabinet body is enhanced, air in the storage cavity can be kept fresh, moisture and other phenomena can be avoided, air circulation in the storage cavity is enhanced, and the service life of the cabinet body is prolonged. Clothes pollution is reduced, and the cleanliness and quality of clothes can be maintained.

The utility model discloses and provides a camera hot shoe interface assembly convenient for camera accessory connection, comprising a camera main body, the left and right sides of the camera main body are provided with first installation spaces, the two sides of the front end of the camera main body are provided with second installation spaces, and the top end of the camera main body is provided with an installation groove. A hot shoe seat is mounted on the inner wall of the mounting groove, one end of the hot shoe seat is connected with a flash lamp, and the hot shoe seat not only can be connected with accessories of a standard hot shoe interface, such as the flash lamp, but also can be connected with a special-shaped connecting plate to adapt to accessories of a non-standard interface. According to the design, the camera hot shoe interface assembly has wide compatibility and can be compatible with various photographic accessories in the market, and more choices and flexibility are provided for photographers.

The invention relates to the technical field of ink-jet printing, in particular to a piezoelectric film spray head and ink-jet printing equipment, and the piezoelectric film spray head comprises a first ink inlet flow channel, an ink return flow channel and a plurality of first ink cavities which are all arranged in the spray head; each first ink cavity comprises an ink jet preparation cavity, an ink cavity elastic vibration plate, an ink inlet throttling part, an ink return throttling part and a jet hole, the first ink inlet flow channel is communicated with the ink jet preparation cavity through the ink inlet throttling part, and the ink return flow channel is communicated with the ink jet preparation cavity through the ink return throttling part; the ink cavity elastic vibration plate is used for extruding the ink jet preparation cavity to enable ink to be jetted out from the jet hole, a first isolation hole is formed in the bottom face of the ink inlet throttling part, and the first isolation hole communicates with the external space and the ink inlet throttling part. The first isolation hole is communicated with the external space and the ink inlet throttling part, so that pressure residual waves and clutters of inner and outer cavities of ink are quickly eliminated, and inner and outer pressures of an ink squeezing cavity of the nozzle are quickly balanced.

The utility model discloses a quick die changing tool for a squeeze riveter, which comprises a base mounted on the squeeze riveter and positioned below a squeeze riveting head, the base is rotatably connected with a rotating seat capable of rotating horizontally, and the rotating seat is provided with a plurality of dies which are arranged around the rotating center of the rotating seat and are different from one another; a locking structure is arranged between the rotating base and the base so that the rotating base can be locked when different dies are switched to the position under the rivet pressing head. The utility model has the advantages of simple structure, simplicity in operation, and convenience and quickness in die replacement.

The invention discloses an adjustable on-chip integrated polarizer based on a ridge-shaped optical waveguide. The adjustable on-chip integrated polarizer comprises a substrate (7), a TE type on-chip integrated polarizer arranged on the substrate (7), and an adjustable layer (4) covering the polarizer, the TE type on-chip integrated polarizer is composed of a ridge-shaped optical waveguide (3), and incident light is input through an input end Input port (5), transmitted along the ridge-shaped optical waveguide (3) in a TE0 polarization mode and a TM0 polarization mode and output through an output end Output port (6). The substrate (7) comprises a crystal single crystal thin film layer (1) and a substrate material layer (2); the TE type on-chip integrated polarizer is prepared on the crystal single crystal thin film layer (1). Compared with the prior art, the on-chip integrated polarizer has the advantages of wide spectral range, ultrahigh extinction ratio and adjustability.

The present invention belongs to the field of path planning technology, and specifically relates to a robot path planning method based on an improved RRT algorithm, wherein the steps include obtaining environmental space information that requires path planning, defining parameters, obtaining the minimum distance between coordinate points and obstacles; constructing a bidirectional random tree and initializing it, obtaining sampling points through a sampling function; finding the nearest neighbor point, and selecting a new node to make a safe distance judgment, and resampling if it is not satisfied; generating a discretized path; setting a cost function when a local node is expanded; looping and iterating to generate a discrete point cost, taking the minimum cost value, finding the optimal node and inserting it into the current tree; obtaining an overall path Path after local optimization; discretizing the entire Path, setting the cost function of the node during global planning, selecting the node with the minimum cost for reconnection, and finally obtaining a smooth and effective optimal path. The present invention effectively improves the optimality and smoothness of the path.

The embodiments of the present disclosure disclose a method and device for identifying a table header, and an electronic device, wherein the method comprises: reading the content in a current table to obtain an original data matrix corresponding to the data of the first n rows of the current table; processing the original data matrix through a first characteristic matrix and a second characteristic matrix to determine m first prediction position groups corresponding to the prediction header; in response to the number of data rows included in the current table being greater than n+2, increasing the value of n at least once, and determining at least one group of second prediction position groups with a new data matrix, a new first characteristic matrix and a new second characteristic matrix corresponding to the increased n; determining a target position of the header corresponding to the current table based on the m first prediction position groups and / or at least one group of second prediction position groups; the embodiments of the present disclosure provide more flexibility and fault tolerance, and solve problems caused by changes in the position of data content.

The invention belongs to the technical field of hyper-parameter optimization, and provides a universal machine learning hyper-parameter black box optimization system and method, and the system comprises a hyper-parameter optimization client which is used for submitting an optimization request; the hyper-parameter optimization service system is used for processing a received client request; the optimization algorithm configuration component is used for configuring a hyper-parameter optimization algorithm; the automatic stopping component is used for stopping the meaningless training set; the hyper-parameter optimization control panel is used for management configuration, scheduling monitoring, user management, authority management and system setting; according to the method, the optimal hyper-parameter combination can be quickly found, and the hyper-parameter tuning efficiency and accuracy are remarkably improved; compared with a traditional manual tuning method, the method has the advantages that time and labor cost are greatly saved, interference of human factors is avoided, and the tuning result is more objective and reliable.

The invention relates to a data query method and device, computer equipment, a storage medium and a computer program product. The method comprises the following steps: acquiring a data query statement in a session process; wherein the data query statement comprises identification information of the target form; respectively determining the similarity between the identification information of the target form and each data identification in a preset data identification set; wherein the data identifier set comprises a standard data identifier and an associated data identifier; the associated data identifier is obtained by performing element splitting on a standard data identifier of the form to obtain a first quantity of element information, screening a second quantity of element information from the first quantity of element information, and combining the second quantity of element information; wherein the associated data identifier at least comprises entity elements; and according to the similarity, selecting a target data identifier from the data identifier set, and obtaining a corresponding form. By adopting the method, the accuracy of data query can be improved.

The utility model discloses a recyclable and reusable environment-friendly gold-inlaid trophy cup, relates to the technical field of trophy cups, and solves the problems that a first cup body and a second cup body are different in structure, large-caliber ends of the first cup body and the second cup body are connected, the mold processing cost is high, and an upper cup body and a lower cup body are not convenient to connect. Comprising a base and a trophy cup body movably installed on the end face of the base, two honor character frames are fixed to the surface of the trophy cup body, the LOGO is arranged between the two honor character frames, an edging decoration is fixed to the outer side of the trophy cup body, and a supporting groove is formed in the base. The cup body structure is integrally formed and formed by buckling the supporting blocks and the supporting grooves, assembling is convenient and fast, the manufacturing cost of a machining mold and the packaging and transporting cost of the trophy cup product are greatly reduced, and the situation that the first cup body and the second cup body are different in structure and large-caliber ends of the first cup body and the second cup body are connected is avoided; the mould processing cost is high, and the upper and lower split bodies of the cup body influence the modeling design and attractiveness.

The invention discloses a zinc ion battery with a flexible interdigital electrode and a preparation method thereof, and belongs to the technical field of battery production. A plurality of interdigitals of the flexible interdigital positive electrode and the flexible interdigital negative electrode are alternately inserted one by one, an accommodating space is arranged between every two adjacent interdigitals, and gel electrolyte is arranged in the accommodating spaces. The method comprises the following steps: preparing flexible interdigital positive electrode slurry, flexible interdigital negative electrode slurry and gel electrolyte; placing the slurry in a needle cylinder and selecting a needle head; connecting the needle cylinder with an air pump and fixing the needle cylinder on a dispensing machine; controlling the dispensing machine to print a flexible interdigital positive electrode and a flexible interdigital negative electrode; and spraying the gel electrolyte in the accommodating space between the flexible interdigital positive electrode and the flexible interdigital negative electrode. According to the invention, the overall weight of the battery is reduced, more electric energy can be stored and released, and the application prospect of the battery in the fields of various portable devices and high energy requirements is widened. The production cost of the battery can be reduced, the production efficiency is improved, and the flexibility is high.

The invention discloses an organic light-emitting compound and an organic electroluminescent device thereof, the compound is used as a bipolar main body material, and an electron donor unit D (Donat), an electron acceptor unit A (Aceppt) and a large steric hindrance construction unit are introduced, so that the transmission of current carriers can be effectively balanced, excitons can be uniformly distributed, and the light-emitting efficiency is improved. The recombination of carriers at an interface is avoided, and the quenching of triplet state-triplet state under high exciton concentration is reduced, so that the performance and the stability of the device are improved.

The utility model provides a novel liquid cooling data acquisition system, including main module and a plurality of cascade module. The main module includes signal input module, signal processing module and output module. The utility model discloses a input interface and intelligent interface unit, can realize the access of a variety of types sensor data, make more channel number of unit volume, save the installation space of power distribution cabinet, single module can support 4-20mA's input and output simultaneously, can also provide 21VDC and 5VDC's external power supply through voltage output unit, not only make the power supply of sensor more flexible, can also power supply for cascade module, expand more acquisition channel, in addition, still can through the communication control 21V output voltage's delay power -on time, provide more possibility and flexibility for the power -on time sequence control of liquid cooling system.

The utility model discloses a double-shaft control rod with a switch, which comprises a main body, the top end of the main body abuts against a dust cover, a control rod penetrates through the inside of the top end of the dust cover, a locking rod penetrates through the inside of the control rod, the bottom end of the locking rod is fixedly connected with a supporting plate, and the bottom end of the supporting plate is fixedly connected with the switch. And first springs penetrate through the left side and the right side of the supporting plate, the two ends of each first spring are fixedly connected with first limiting blocks, the bottom end of the supporting plate is fixedly connected with a positioning rod, the positioning rod is located in the limiting groove, the outer ring of the positioning rod is slidably connected with a movable limiting block, and the bottom end of the movable limiting block abuts against a second spring. By arranging the control rod, the locking rod, the supporting plate, the first spring, the first limiting block, the positioning rod, the limiting groove, the movable limiting block and the second spring, and through the design of the locking rod, a user is allowed to lock the equipment when needed, accidental movement or adjustment is prevented, and the stability and safety of the equipment in the using process are ensured.

The invention relates to the technical field of block chain application, in particular to a digital asset graph mutual conversion method based on a block chain. Comprising the following steps: if ERC20 assets are transferred and an integer number of NFTs are transferred at the same time, if verification of a user account is passed, deducting a corresponding number of ERC20 assets and NFT assets from the user account; and if the NFT is transferred, the ERC20 assets with the number of 10 * * declarations are also transferred at the same time, and if the verification of the user account is passed, the corresponding NFT and the corresponding number of ERC20 assets are deducted from the user account. According to the invention, seamless mutual conversion between digital assets, including transfer of homogenized assets and transfer of non-homogenized assets, is realized, so that more flexibility and convenience are provided for digital asset transactions on a block chain network.

The utility model discloses an intelligent touch control synchronous sound box based on a V53 chip, which integrates audio and touch control processing functions through a V53 chip module, remarkably improves the processing efficiency and accuracy of audio signals, and reduces the complexity and cost of an external audio processing circuit. A touch instruction recognition function enables a user to more quickly and accurately touch operation, the fluency and the accuracy of user interaction are enhanced, in addition, the module has a synchronous communication function, the problem of audio asynchronism among multiple sound boxes is effectively solved, the auditory experience is optimized, the sound box shell is directly provided with the touch sensing panel, and compared with a traditional physical key, the sound box shell is more convenient to use. According to the invention, the operation is more flexible and convenient, personalized setting is supported, the user experience is improved, meanwhile, the wireless synchronization module enables the sound box to synchronously play audios with other intelligent devices, more choices and flexibility are provided, the sound box is easily integrated into an intelligent home system and becomes an important part of intelligent home ecology, and the overall experience of the user is further enhanced.

The present invention discloses a modified carrier and a composite metal oxide catalyst prepared by using the modified carrier, and particularly relates to the technical field of catalyst preparation, the modified carrier comprises a carrier and a composite metal oxide impregnated and adsorbed on the carrier, the general formula of the composite metal oxide is Mo12VaAbBcCdDeEfFgOn, the carrier is selected from at least one of aluminum oxide, silicon dioxide, titanium dioxide, magnesium oxide, zirconium oxide, a silicon dioxide-aluminum oxide composite carrier, silicon carbide, silicon nitride, diatomite and zeolite, and the carrier is pretreated to improve the specific surface area and porosity of the carrier. By pretreating the carrier, reasonably selecting composite metal oxide elements and adopting various loading methods, the problems of insufficient activity, selectivity and stability of the existing catalyst, poor carrier performance and the like are solved, and the catalyst has the advantages of improving catalytic performance, optimizing reaction conditions and feed gas adaptability and facilitating product separation and purification.

The utility model discloses a novel reinforced concrete modeling beam which comprises a steel formwork and a modeling beam body, the steel formwork is arranged at the top of the modeling beam body, the modeling beam body is a concrete supporting component internally provided with reinforcing steel bars, the bottom of the supporting component is provided with first channel steel, the first channel steel is provided with a through hole and a pouring hole, and the through hole is communicated with the pouring hole. A reinforced concrete member is adopted as a modeling beam, and construction is carried out in combination with the process of prefabricating a steel formwork. The prefabricated steel formwork has the supporting capacity in the span direction, so that a supporting structure in the middle of a traditional formwork is omitted, supporting is only conducted on the two sides of the modeling beam, the construction efficiency is improved, and the cost is reduced. Compared with a traditional independent modeling beam construction mode, a construction method of a steel component formwork and a triangular supporting frame is adopted, high-risk operation of a cantilever beam, a formwork supporting frame and the like is omitted, meanwhile, the main body construction progress is not affected, and good overall benefits are achieved.

The utility model discloses geological detection equipment with an adjusting function, which belongs to the technical field of geological detection equipment and comprises a workbench, and a group of lifting adjusting components are assembled at the central point of the upper end surface of the workbench. The geological detection equipment with the adjusting function has the advantages that the sampling efficiency is improved, the sampling amount is ensured to be uniform, the operation is convenient and fast, the detection result is improved, and the labor cost is saved, the detection cylinder can be driven to adjust the height by controlling the arranged first driving motor, and the detection efficiency is improved. The arranged guide rod cylinder is controlled to drive the cylinder guide rod at the output end to move and drive the piston to move for sampling, so that the sampling process is quicker and more efficient, the sampling efficiency can be greatly improved compared with manual sampling, the sampling amount of each sample can be ensured to be uniform through accurate control of the arranged guide rod cylinder, and the sampling efficiency is improved. The problem that the sampling amount is not uniform possibly in manual collection is avoided, and the accuracy of subsequent detection results is improved.

The utility model discloses a modularized new rural villa combined structure which comprises a double-layer foundation frame, a sinking cavity formed in the double-layer foundation frame, a lower concrete plate installed in the sinking cavity and an upper concrete plate installed on the upper surface of the lower concrete plate. A left butt-joint plate and a right butt-joint plate are fixedly welded to the left side and the right side of the top end of each double-layer foundation frame correspondingly and used for connecting the two bilaterally adjacent double-layer foundation frames in the X-axis direction. According to the utility model, the double-layer foundation frame, the sinking cavity, the lower concrete plate, the upper concrete plate, the left butt-joint plate, the right butt-joint plate and the like are matched with one another, the double-layer foundation frame which can be butt-jointed front, back, left and right is adopted, and the upper concrete plate and the lower concrete plate are mounted in the double-layer foundation frame to form a double-layer structure; the bearing capacity and anti-seismic performance of the foundation are improved, the stability and durability of the structure are enhanced, and a solid guarantee is provided for safe operation of a building.

The utility model discloses a round steel cutting machine which comprises a workbench and a clamping mechanism. A placement groove is formed in the left end of the upper surface of the workbench, a cutting table is fixedly connected to the upper surface of the placement groove, mounting frames are fixedly connected to the front end and the rear end of the middle of the upper surface of the workbench correspondingly, guide sliding grooves are formed in the mounting frames correspondingly, sliding blocks are slidably connected to the inner walls of the guide sliding grooves correspondingly, and a mounting plate is fixedly connected between the two sliding blocks; a cutter is arranged in the mounting plate and corresponds to the cutting table in the vertical direction. And the clamping mechanism comprises mounting grooves, clamping plates, a second rotating groove and a second rolling wheel, the mounting grooves are formed in the front end and the rear end of the right side of the upper surface of the workbench correspondingly, and the clamping plates are rotationally connected into the mounting grooves through pin shafts correspondingly. The machining and cutting process is more flexible and diverse, the clamp does not need to be replaced or equipment does not need to be adjusted, and adaptability is higher.

The invention relates to the technical field of machining, in particular to a long overhanging screw tap manual tapping device, equipment and method. The screw tap comprises a taper shank and a blade which are connected; positioning holes are formed in the positioning mechanism and comprise a taper shank positioning hole and a blade positioning hole; during tapping, a screw tap penetrates through the positioning hole and extends to the tapping hole, the taper shank is in clearance fit with the taper shank positioning hole, and the blade is in clearance fit with the blade positioning hole; the outer wall of the positioning mechanism is attached to the side wall of the part to be tapped. A taper shank of the screw tap is in clearance fit with a taper shank positioning hole of the positioning mechanism, and it is guaranteed that the taper shank does not deflect in the tapping process. The cutting edge of the screw tap is in clearance fit with the cutting edge positioning hole of the positioning mechanism, so that deviation of the positioning mechanism caused by hole edge protrusion, small scrap iron and the like during tapping can be avoided, and the tapping accuracy and precision are improved. The problem that the tapping quality and efficiency are affected due to deflection of a manual tapping screw tap of an existing long overhanging screw tap is solved.

The utility model relates to the technical field of limb exercising devices, and discloses a limb exercising device for rehabilitation of pregnant and lying-in women, which comprises a supporting mechanism, a buffering mechanism is arranged at the top of the supporting mechanism, and a sliding mechanism is arranged at the top of the buffering mechanism. By means of the supporting mechanism, when the height of the device needs to be adjusted, the squeezing plate can slide up and down in the sliding groove of the supporting column along the limiting shaft, so that the height of the whole supporting mechanism is changed to meet the using requirements of different pregnant and lying-in women, meanwhile, the supporting column guarantees the stability of the device in the using process, and the device is convenient to use. The device is simple in structure, reliable support is provided for the pregnant and lying-in woman, the device is prevented from shaking or toppling in the exercise process, use safety is guaranteed, and through the arranged buffer mechanism, when the pregnant and lying-in woman exercises on the device and vibrates, impact force on the body of the pregnant and lying-in woman can be reduced to the maximum extent.