50results about How to "Low applicability" patented technology

The invention discloses a massage chair real-time control method and system based on electromyographic signals and a computer medium. The method comprises the steps that the electromyographic signals of a current massage user are obtained; extracting time domain features, frequency domain features and geometric features of the electromyographic signals; obtaining a real-time muscle state according to the time domain feature, the frequency domain feature and the geometric feature of the electromyographic signal; and controlling the massage strength and rhythm of the massage chair according to the real-time muscle state and the historical massage data of the current massage user. By analyzing the long-term muscle state and massage record of the user, an instant personalized massage scheme is generated for each user. Therefore, the actual requirements of the user can be better met, the system can provide more accurate and personalized services for the user, and the optimal user experience can be achieved.

The invention is applicable to the technical field of welding, and provides a temperature control protection tool for thin-wall welding, comprising: a workpiece to be welded, the workpiece to be welded comprising a first workpiece and a second workpiece, and a weld zone between the first workpiece and the second workpiece; the inner ring cooling workpiece is provided with a cooling flow channel, is attached to the welding seam area and is used for taking away heat near the welding seam; the outer ring cooling tool is provided with a cooling flow channel, and the outer ring cooling tool is attached to the first workpiece and used for reducing the temperature of the first workpiece and protecting a non-welding area; the back gas protection tool is installed between the first workpiece and the second workpiece, located on the back of the weld joint and used for replacing gas in the back area of the weld joint with inert gas. The invention further provides a welding process for thin-wall welding, and the temperature control protection tool is adopted in the welding process. While the welding quality is ensured, brazed welding seams, plating layers, non-metal parts and the like near fusion welding seams are protected from being damaged due to too high temperature.

The invention relates to the field of spindle boxes, and discloses a shockproof high-precision spindle box structure which comprises a spindle box body. A buffering assembly is arranged at the bottom end of the main spindle box body, first buffering springs are evenly installed at the bottom end of the main spindle box body, spring seats are installed at the bottom ends of the first buffering springs, auxiliary assemblies are arranged at the top ends of the spring seats, and connecting round rods are fixedly installed between the spring seats. Sliding seats are slidably mounted on one sides of the spring seats, the sliding seats are connected through second buffer springs, and connecting rods are rotatably mounted at the top ends of the sliding seats; by arranging the auxiliary assembly, the damping protection effect of the device on the main spindle box body is enhanced, the springback speed of a first buffer spring is reduced, resetting of the main spindle box body is smoother and more stable, then the working precision of the main spindle box body is improved, and the quality of machined products is improved.

The invention discloses an MIESs coordinated optimization scheduling method under a carbon-green certificate transaction interaction mechanism considering a dynamic supply and demand transaction curve. The method comprises the following steps: constructing an equipment model according to an MIESs architecture; the method comprises the following steps: on the basis of introducing carbon capture coupling power-to-gas equipment into a cogeneration unit model, constructing a system optimization model considering a dynamic carbon-green certificate transaction interaction mechanism; establishing an MIESs alliance coordinated optimization scheduling model of a carbon-green certificate transaction interaction mechanism considering a dynamic supply and demand transaction curve; and solving the MIESs alliance coordinated optimization scheduling model of the carbon-green certificate transaction interaction mechanism considering the dynamic supply and demand transaction curve. According to the method provided by the invention, the economical efficiency and the carbon emission level of the comprehensive energy system are improved while the operation flexibility of the comprehensive energy system is improved.

The invention provides a power distribution box, and relates to the technical field of power distribution box assemblies, the power distribution box comprises a box body frame, a control panel and an electric appliance element, the middle shaft of the box body frame is fixedly connected with a middle partition plate, the upper half section of the box body frame is fixedly connected with a flat plate, and the top surfaces of two sections of the flat plate separated by the middle partition plate are provided with wiring bins; t-shaped limiting rods are fixedly connected to the two sides of the middle partition plate, a micro motor drives a driving gear to rotate, the driving gear drives a gear ring to rotate, the gear ring drives a connecting sleeve to rotate, the connecting sleeve can rotate based on the arrangement of a bearing, and when the connecting sleeve rotates, an internal thread groove of the connecting sleeve is matched with a lead screw, so that the whole mounting mechanism can horizontally move on the lead screw; the limiting blocks are matched with the T-shaped limiting rods to limit the other ends of the mounting mechanisms from deviating, then the effect of adjusting the distance between the mounting mechanisms is achieved, electric adjustment is achieved through the driving mechanism, and the problem that an existing distribution box electric appliance guide rail is not easy to adjust is solved.

The utility model discloses lighting equipment for ophthalmology examination, and relates to the technical field of lighting equipment for ophthalmology examination, the lighting equipment for ophthalmology examination comprises a supporting mechanism, the supporting mechanism comprises a U-shaped supporting plate, the inner wall of the U-shaped supporting plate is provided with a sliding groove, the outer wall of the U-shaped supporting plate is fixedly connected with a connecting plate, and the connecting plate is fixedly connected with the U-shaped supporting plate. A second U-shaped supporting plate is fixedly connected to the side, away from the U-shaped supporting plate, of the connecting plate, a dust removal mechanism is arranged on the outer wall of the U-shaped supporting plate, and the dust removal mechanism comprises an L-shaped supporting plate. The extrusion air bag can be extruded by the collision ball, and when the collision ball is extruded, internal air can be quickly sprayed to the slit lamp through the air spraying opening, so that dust falling into the slit lamp can be conveniently and timely cleaned, and the conditions that lamplight is not suitable for use or focusing due to dust accumulation and the like are reduced.

The utility model relates to the technical field of unmanned aerial vehicle supports, in particular to an unmanned aerial vehicle landing buffering support which comprises a buffering support component set arranged at the top of an unmanned aerial vehicle body, the buffering support component set is used for buffering landing impact force and comprises an upper frame body, a sleeve piece is arranged at one end of the upper frame body, and the sleeve piece is connected with the upper frame body. And a lower buffer piece is arranged at the other end of the upper frame body. According to the unmanned aerial vehicle, impact force generated by landing can be effectively absorbed, the negative influence of the impact force on equipment in the unmanned aerial vehicle body is reduced, and the usability of the unmanned aerial vehicle is improved.

The present invention provides a distribution box, which relates to the technical field of distribution box components, including a box frame, a control panel and electrical components. A middle partition is fixedly connected to the central axis of the box frame, a flat plate is fixedly connected to the upper half of the box frame, and a wiring compartment is arranged on the top surface of the flat plate divided into two sections by the middle partition. T-shaped limit rods are fixedly connected to both sides of the middle partition. A micro motor drives an active gear to rotate, the active gear drives a gear ring to rotate, and the gear ring drives a connecting sleeve to rotate. The connecting sleeve can rotate based on the setting of the bearing. When the connecting sleeve rotates, its internal thread groove cooperates with a screw rod, so that the installation mechanism as a whole can translate on the screw rod, and the limit block and the T-shaped limit rod are adapted to limit the other end of the installation mechanism from deviation, thereby achieving the effect of adjusting the spacing between each installation mechanism. In addition, the present application is electrically adjusted by a driving mechanism, which solves the problem that the electrical guide rail of the existing distribution box is difficult to adjust.

The invention discloses a hybrid small signal modeling method for a cascaded power supply, and relates to the technical field of modeling, a pre-stage circuit of the cascaded power supply adopts a half-bridge Buck-Boost and CLLC bidirectional converter topology, and a post-stage circuit adopts a three-phase interleaving Buck topology. According to the mixed small signal modeling method, a generalized average method is adopted for a preceding-stage CLLC topology to establish a converter mathematical model, a state space average method is adopted for a half-bridge Buck-Boost converter and a backward-stage three-phase staggered Buck converter to establish a mathematical model, and a modular combination method is adopted to establish an overall mathematical model of a cascade system. The overall behavior of the cascade power supply can be better described; according to the technical scheme, a simple, convenient and accurate modeling method is provided for a multi-switching-frequency circuit containing a plurality of converters, the modeling analysis requirement of a cascade power supply with various types of internal modules, complex connection and various topologies is met, and an important research background and tool are provided for system optimization and performance analysis.

The present invention discloses a spiral coil heating flame preheating plug and a diesel engine, belonging to the technical field of engine cold start auxiliary system. The spiral coil heating flame preheating plug comprises a flame cover, a shell, an electromagnetic induction evaporation net, an oil inlet pipe and an electromagnetic induction spiral coil, wherein the wall of the flame cover is provided with ventilation holes, and is coaxially arranged in the inner cavity of the lower part of the shell; the electromagnetic induction evaporation net is sandwiched between the inner wall of the shell and the outer wall of the flame cover; one end of the oil inlet pipe is connected to the electromagnetic induction evaporation net, and the other end can be connected to the oil pump; the electromagnetic induction wire spiral coil is spirally wound on the outer wall of the shell and the position corresponding to the electromagnetic induction evaporation net; the inner cavity of the upper part of the shell forms a mixed gas cavity. The spiral coil heating flame preheating plug can significantly improve the cold start performance of the diesel engine in extremely cold and harsh environments.

The utility model relates to the technical field of protection block, disclose an improved A -level road guardrail is with prevent blocking block, including prevent blocking block body, prevent blocking block body rear end penetrates and is fixedly connected with backplate, the backplate rear end is equipped with preset hole, prevent blocking block body top front end fixedly connected with arc plate, prevent blocking block body front end is equipped with through -hole, prevent blocking block body front end is provided with first bolt. In the utility model, through the cooperation between prevent blocking block body, backplate, preset hole, stand, arc plate, through -hole, compared with the cost of reconstruction is saved, the traffic recovery benefit brought by construction period shortening, the safety protection level is promoted, reduces the accident risk, the sustainable development, promotes the applicability of resource -conserving construction city road, expressway etc. asphalt or cement additional paving road section, the potential market demand of road reconstruction project.

The utility model relates to the technical field of architectural design, in particular to an architectural design display wall poster mounting frame which comprises a disc and a mounting mechanism, the mounting mechanism comprises two groups of mounting assemblies and a supporting assembly, each group of mounting assembly comprises two gears and two groups of hanging pieces, and the supporting assembly is arranged on the disc. Each group of hanging pieces comprises a supporting rod, a screw rod, a rotating block, a hook, two limiting rings and a fixing piece, the two gears are fixedly connected with the disc and meshed with each other, the supporting rod is fixedly connected with the corresponding gear, one end of the screw rod is inserted into the supporting rod and is in threaded fit with the supporting rod, and the other end of the screw rod penetrates through the rotating block and is rotationally connected with the rotating block; the two limiting rings are arranged on the outer side of the lead screw in a sleeving mode, the hook is fixedly connected with the rotating block, the fixing piece is arranged in the middle of the supporting rod, through the arrangement, posters of different sizes can be conveniently hung, and therefore the applicability of the hanging frame is improved.

The application discloses a kind of face, block and point scale linkage flood warning method based on river forecast water level in plain area, according to the flood face scale early warning of plain representative site, for having face scale early warning area, using GIS technology and the spatial autocorrelation of plain area water level in flood forecast process, calculate submerged grid and depth, carry out block, point scale early warning.The method is a kind of simple, fast method.It includes the following steps: collecting plain area basic data;A kind of face, block and point multiscale linkage early warning mechanism;Compare regional representative site forecast water level and characteristic water level, dike elevation, and carry out face scale flood risk early warning;With face scale early warning area as unit, obtain regional forecast water level face data, generate the submerged grid and water depth of regional unit, and carry out block scale early warning;With face scale early warning area as unit, in combination with submerged face, submerged water depth and flood risk point data, utilize spatial analysis technique to carry out point scale early warning.

The utility model relates to the technical field of erecting rods. The launching cable erecting rod comprises a mounting plate and a lifting mechanism, the lifting mechanism comprises a supporting rod and a lifting rod, the supporting rod is fixedly connected to the middle position of the surface of the upper end of the mounting plate, and the lifting mechanism is used for adjusting the cable erecting height of equipment. A first bevel gear drives a second bevel gear and a lead screw to rotate by rotating a rotating rod, so that a lifting rod moves upwards or downwards on the outer surface of the lead screw, and a clamping mechanism and a clamping mechanism are synchronously driven to move upwards or downwards; and therefore, the equipment can be conveniently adjusted according to the required supporting height, so that the equipment is suitable for various supporting heights, and the applicability of the equipment is reduced to a certain extent.

The application discloses a camera calibration method and device based on road features, which solves camera parameters by extracting road feature points on an image and corresponding world feature points. The extracted road feature points include first features (point features), second features (line features) and third features (surface features). For the second features and the third features, the application introduces feature parameters to describe the matching relationship between the image feature points and the world feature points. The camera parameters and the feature parameters jointly constitute the calibration parameters of the camera. The parameters are solved by a gradient optimization algorithm to complete camera calibration. The application overcomes the dependence of traditional calibration methods on matching point pairs, realizes a multi-dimensional calibration method based on point matching, line matching and surface matching, expands the application scenarios of the calibration method, and improves the accuracy and efficiency of camera calibration.

A distributed heat dissipation device of a permanent magnet synchronous motor control system is characterized in that a fan cover is installed at the rear end of a stator, a fan is installed on the fan cover, the heat dissipation device comprises a box body and a heat dissipation component, the heat dissipation component is installed on the outer side of the stator of the motor in the circumferential direction, and the hollow box body is installed on the outer side of the heat dissipation component in the circumferential direction; an electronic component needing heat dissipation is placed in the hollow box body. The electronic component with high heat productivity is placed in the hollow box body, and the heat dissipation device is arranged to dissipate heat of the electronic component with high heat productivity. And a fan is arranged at the rear end of the motor, and an air duct is arranged between the fan and the heat dissipation device, so that the stator of the motor and the heat dissipation device are further cooled. Therefore, the permanent magnet synchronous motor provided with the controller is subjected to effective air-cooling heat dissipation, and the heat dissipation device is low in cost, can be suitable for motors of various models, and is high in applicability.

The utility model discloses an integrated shielded wire-to-board connector module, which relates to the technical field of connectors and comprises a seat body, the surface of the seat body is provided with a through hollow groove, two ends of the seat body are fixedly connected with limiting mechanisms, and the inner wall of the seat body is fixedly connected with a wiring terminal for wiring. When the device needs to be connected with more integrated shielded wires, the other device can be integrally in butt joint with the first device, the buckles of the two devices are clamped with the clamping grooves, the copper connecting plate is in contact with the copper butt joint plate, and due to the arrangement of the copper convex balls, when the wiring terminals of the two devices are connected, the copper convex balls can be clamped with the clamping grooves, so that the wiring terminals of the two devices can be connected with the copper butt joint plate. The copper convex ball extrudes the C-shaped bend of the copper plate, and the bending of the C-shaped bend after being extruded pushes the copper butt joint plate to be in close contact with the copper convex ball, so that the contact of the wire terminals between the two devices is realized, and the whole new device can be connected with more integrated shielding wires; the problem that an existing integrated shielded wire-to-board connector module is low in applicability is solved.

The invention provides a standard decoction of pawpaw decoction pieces, further provides a characteristic spectrum construction method of the standard decoction of pawpaw decoction pieces and an identification method of the standard decoction of pawpaw decoction pieces, and further provides a method for identifying production places of pawpaw medicinal materials in the standard decoction. According to the construction method of the specific chromatogram, the special requirements of a chromatographic column are reduced, the analysis time is shortened, the detection efficiency is improved, the preparation of a test solution and the selection of characteristic peaks are optimized, the precision is high, the stability is good, the repeatability is good, and a new choice is provided for the quality detection of papaya medicinal materials, decoction pieces, standard decoction and formula granules.

The invention provides an intelligent monitoring device for incremental launching frame bridge construction and a using method thereof, and belongs to the technical field of frame bridge construction.The intelligent monitoring device for incremental launching frame bridge construction comprises a frame unit, a prism and an adsorption unit; the frame units are provided with mounting racks in one-to-one correspondence with four corners of the frame bridge and connecting racks arranged between every two adjacent mounting racks; the prisms are in one-to-one correspondence with the mounting racks, and the prisms are mounted on the outer sides of the mounting racks; the adsorption unit is provided with an adsorption part which is arranged on the inner side of the frame unit and abuts against the frame bridge, and an air exhaust part which is used for evacuating air in an area defined by the adsorption part and the frame bridge. The applicability of the prism mounting structure is improved.

The invention provides a surface detection method of a polished workpiece, which is applied to surface detection equipment of the polished workpiece, and the method comprises the following steps: obtaining a surface image of a to-be-detected polished workpiece, the surface image being obtained by shooting the polished surface of the to-be-detected polished workpiece through a CCD camera, and the to-be-detected polished workpiece corresponding to one or more surface images; preprocessing each surface image to obtain a preprocessed image corresponding to each surface image; and for each pre-processed image, inputting the pre-processed image into a surface detection model, performing feature enhancement processing on the pre-processed image through the surface detection model, performing feature extraction and surface detection, and determining and outputting a surface detection result. According to the scheme, feature enhancement is carried out on the preprocessed image, the enhanced feature image capable of better reflecting the tiny flaws is mined out for texture analysis, meanwhile, image features are extracted and fused, the recognition degree of the tiny flaws can be improved, and the accuracy and reliability of surface detection can be improved.

The present invention discloses a method for determining the length of the plastic zone in the crushing process of an elliptical metal ring and a verification method, and relates to the technical field of structural strength analysis and energy absorption structure. The technical scheme is first classified into a linear strengthening case and a nonlinear strengthening case. For the linear strengthening case, the relationship between the rotation angle and the crushing displacement and the horizontal angle of the normal vector is established by using the root-finding numerical calculation related to the elliptical integral, and then the bending moment distribution is obtained, and the length of the plastic zone is obtained from the bending moment distribution. For the nonlinear strengthening case, the equation group containing 5 ordinary differential equations is numerically solved and the relationship between the crushing displacement and the bending moment distribution is established after the convergence result is obtained by using the Newton-Raphson iteration, and then the length of the plastic zone is obtained. The present invention can realize the convenient calculation of the plastic zone length that changes with the increase of the crushing displacement during the lateral crushing process of the elliptical metal ring without complicated finite element calculation.

The utility model relates to the technical field of pet seats, in particular to a pet seat which comprises seat legs and a seat body arranged above the seat legs, an auxiliary climbing mechanism for assisting a pet in climbing is arranged on the seat legs and located below the seat body, and the auxiliary climbing mechanism comprises a telescopic crawling ladder. The chair legs are provided with the climbing assisting mechanisms and the pet climbing assisting mechanisms, so that pets can get on and off the chair conveniently, the chair is suitable for pets of different sizes, the applicability of the chair is improved, the climbing assisting mechanisms are telescopic climbing ladders for passengers, more use choices are provided for users, storage of the climbing ladders is facilitated, and the occupied space is reduced. The problems that an existing pet seat is high, the height affects use of some short pets, the existing pet seat is only suitable for use of some large pets, the applicability of the pet seat is reduced, suitable pet seats need to be purchased when pets of different sizes exist in a house, and the use cost is increased are solved.

The application provides a glass curtain wall damage identification method and system, the method comprising: S1, a collection stage: applying a hammering excitation to a glass curtain wall, and synchronously collecting vibration response signals under the hammering excitation at multiple signal collection measuring points around the periphery of the glass curtain wall; S2, an analysis stage: processing the vibration response signals to calculate time-frequency energy and information entropy thereof; weighting and fusing the time-frequency energy and information entropy to obtain a damage evaluation index vector; S3, an identification stage: mapping the damage evaluation index vector to each signal collection measuring point to generate a damage distribution cloud map representing damage spatial distribution. The method of the application can evaluate the damage condition of the glass curtain wall by analyzing the vibration characteristics of the vibration response signals without disassembling or damaging the glass curtain wall components, can accurately and quickly locate the damage position, and provides a new way for monitoring the service safety of the glass curtain wall.

The invention discloses a method for carrying out olefin hydroformylation reaction by using an ionic phosphine-containing polymer supported catalyst, the metal of the selected catalyst is one or more than two active metal components selected from Rh, Co, Ir, Ru, Pt, Pd and Fe, and is supported on an ionic polymer; the ionic polymer is formed by self-polymerizing a phosphine-containing cation template with vinyl or copolymerizing the phosphine-containing cation template with other components, and then bonding with triphenylphosphine tri-m-sodium sulfonate (TPPTS) with negative charges. The ionic phosphine-containing polymer supported catalyst provided by the invention can be used in reaction systems of hydroformylation reaction, hydroesterification reaction, alcohol carbonylation, hydromethylamination and the like of olefin, and compared with a traditional TPPTS catalyst, the ionic bond is more stable, and the ionic phosphine-containing polymer supported catalyst has higher catalytic activity and better stability.

A platform elevator main frame, including main machine bottom plate, guide rail support, main rail and vice rail and reinforcing rib, the top surface of main machine bottom plate is welded with a reinforcing rib on each side, the guide rail support is fastened on the both ends of main machine bottom plate through bolt, two groups of guide rail fixed mounting holes are set up on the guide rail support, the main rail and vice rail are locked on the guide rail support through bolt connection, the steel band main machine bolt is connected on the main machine bottom plate, two parallel waist-shaped steel band down rope holes are set up on the main machine bottom plate corresponding to the position of steel band main machine output shaft, two rope head mounting holes are set up on each side of steel band down rope hole, the main machine bottom plate, guide rail support, reinforcing rib and speed limiter mounting hole position are highly integrated and compactly arranged, not only the component quantity is reduced, the load is effectively dispersed and transmitted, stress concentration is avoided, the steel and stability of overall structure are enhanced, and the occupation of top layer space is reduced.

The invention provides a straightening device for copper bar processing and production, and relates to the technical field of straightening devices.The straightening device comprises a base, a control panel is fixedly installed on the outer wall of the base, a shielding cover is arranged above the base, two T-shaped sliding grooves are formed in the top of the base, and two straightening mechanisms for straightening are slidably connected to the two T-shaped sliding grooves; a mounting plate is fixedly connected to the outer wall of the base, a driving mechanism is arranged at the top of the mounting plate, a second motor is controlled to start through a control panel, and the second motor drives a first bidirectional lead screw to rotate through transmission of a third bevel gear and a fourth bevel gear; the first two-way screw rod finally drives the second two-way screw rod to rotate through transmission of the first chain wheel, the synchronous chain and the second chain wheel, the first two-way screw rod and the second two-way screw rod rotate at the same time and finally drive the two straightening mechanisms to be close to or far away from each other through limitation of the threaded grooves, and finally the effect of adapting to copper bars with different diameters is achieved. The problem that an existing straightening device is low in applicability is solved.

The utility model relates to the technical field of stamping dies, in particular to a compressor leg adjustable stamping die which comprises a table and a stamping mechanism, and the stamping mechanism comprises a lower die, an upper die, a moving assembly, two adjusting assemblies, a stamping assembly and a plurality of supporting assemblies. Each adjusting assembly comprises a moving plate, a supporting plate, a lower clamping frame, a lower clamping block, two first bolts, an upper clamping frame, an upper clamping block, two second bolts and two abutting pieces, one end of the lower clamping block is fixedly connected with the lower mold, the other end of the lower clamping block penetrates through the lower clamping frame, the two first bolts penetrate through the lower clamping frame and are in threaded connection with the lower clamping block, and the two second bolts are in threaded connection with the supporting plate. And one end of the upper clamping block is fixedly connected with the upper mold, the other end of the upper clamping block penetrates through the upper clamping frame, the two second bolts penetrate through the upper clamping frame and are in threaded connection with the upper clamping block, and through the arrangement, molds of different sizes can be replaced conveniently, so that the applicability is improved.

The utility model relates to the technical field of speed reducers, and discloses a rotary speed reducer with good stability, which comprises an upper shell and an input shaft, a lower shell is fixedly arranged at the lower end of the upper shell, a plurality of planet gears are fixedly arranged at the lower end of the input shaft, and a sun gear is clamped in the middle of the upper shell. A mounting plate is fixedly arranged at the upper end of the outer surface of the lower shell, a spring damper is fixedly arranged at the lower end of the mounting plate through threads, an empty groove is formed in the middle of the lower shell, a first gear is rotationally arranged on one side of the interior of the empty groove, and rotating shafts are fixedly arranged in the middle and on the other side of the top face in the empty groove. According to the speed reducer, the chassis of the speed reducer is enlarged, a plurality of spring dampers are additionally arranged, the stability of the speed reducer is enhanced, vibration of the speed reducer is reduced, the speed reducer is provided with the double output shafts, installation with different mechanisms is facilitated, the practicability of the speed reducer is improved, and the speed reducer is convenient to use.

Disclosed are a method and apparatus for determining reservation information, which relate to the technical field of computers. The method comprises: acquiring service time data of each service set by a service provider, wherein the service time data comprises a service period corresponding to each service; according to the service period of each service, determining the duration unit of the service provided by the service provider; dividing, according to the duration unit, the service time data into at least one service time unit, and storing data of each service time unit in a storage unit; and in response to receiving a service request, which is sent by a service request party, for a first service, setting, within the service period of the first service, the storage unit corresponding to each service time unit to be a read-only storage unit. The method has wide applicability.

The utility model discloses a training kettle-bell capable of adjusting weight, which belongs to the technical field of fitness equipment and comprises a kettle-shaped main body for bearing, a connecting track is arranged in the kettle-shaped main body, and a balancing weight for increasing balance weight is mounted in the connecting track. A mounting groove is formed in the kettle-shaped main body and located in the connecting rail, and a mounting plate used for bearing is fixedly connected into the mounting groove. The use weight can be adjusted, the mass of the kettle-shaped filling device is changed due to different filling materials, a user can select the kettle-shaped filling device according to the actual use requirements of the user, and the use cost is reduced. According to the kettle-bell, different using requirements of personnel can be effectively met, the problem that a traditional kettle-bell is low in applicability is solved, the kettle-bell is simple in overall structure and high in safety, the balancing weight is assembled in the kettle-shaped main body, the balancing weight is fixedly installed through the ejector block under the action of the spring, and therefore the balancing weight cannot fall off even if the kettle-bell falls off in the using process.