225results about How to "Reduced usability" patented technology

The invention discloses a multi-factor dynamic identity verification and access control system, which comprises a user management module, a biological recognition module, a strategy-level authorization module, a dynamic evaluation module and an interface module, and is characterized in that the user management module is used for user registration, information management and logout; the biological recognition module adopts a biological recognition technology to collect, process and compare biological characteristics of a user; the strategy-level authorization module is used for accessing sensitivity levels of applications and terminal type factors according to user identities; the dynamic evaluation module is responsible for monitoring and evaluating the user access process in real time; and the interface module is used for providing an interactive interface between the system and other systems or applications. By integrating various advanced technologies, efficient, safe and flexible access control management is realized, and the safety and user experience of the whole system are improved.

The invention discloses a battery impedance online monitoring system and method. The system comprises a sinusoidal signal generation circuit, a voltage-current conversion circuit, a signal processing module and an impedance calculation module, the sinusoidal signal generation circuit generates a frequency-controllable sinusoidal signal through direct digital frequency synthesis (DDS) and is used for controlling a battery disturbance signal; the voltage-to-current conversion circuit realizes the adjustment of the output current of the voltage-to-current conversion circuit by controlling the input voltage of the voltage-to-current conversion circuit; the signal processing module collects a voltage response signal of a battery to be detected, carries out signal processing of direct current removal and noise removal, converts an analog signal into a digital signal through an AD sampling circuit, and inputs the digital signal to the impedance calculation module. And the impedance calculation module is used for calculating the impedance of the battery by identifying the amplitude and the phase of the acquired signal. According to the invention, the direct current superposed with sine disturbance is extracted from the battery through the voltage-current conversion circuit, and the device can be used for the online measurement of the impedance of the battery under the working conditions of battery offline, constant-current charging and discharging and the like.

The invention belongs to the field of complex network synchronous control, and discloses a complex network fixed time event trigger pinning synchronous control method based on aperiodic intermittent control, which aims at solving the problem that a pinning strategy of a traditional fixed pinning node set requires that the node set is fixed and cannot flexibly change along with a network state. Constructing a dynamical model of the master system, the slave system and the synchronization error; designing a fixed-time non-periodic intermittent containment controller based on an event triggering containment mechanism; constructing a Lyapunov function, and solving the synchronization completion time of the complex network; the controller is applied to the slave system, so that the synchronization error between the slave system and the master system is reduced to 0 within the fixed time, and the fixed time synchronization control of the complex network is completed; according to the method, the control condition is controlled based on event triggering, the communication cost is reduced, and meanwhile, the non-periodic intermittent control of the complex network is completed within fixed time. The effectiveness of the control method is verified through numerical simulation.

The invention provides a private data protection method based on deep learning, and the method comprises the following steps: S11, carrying out the classification and labeling of a sensitive data set, recognizing sensitive information, and carrying out the processing of the sensitive information; s12, sensitive information in the sensitive data set is divided into a discrete data set and a continuous data set, and different types of noise are added to the continuous data set and the discrete data set for disturbance; s13, encrypting the disturbed data set, and sharing and publishing the data set to a data user; s14, monitoring the privacy risk of the shared data in real time by using a privacy computing technology; and S15, dynamically adjusting the data sharing strategy according to the privacy risk degree. According to the method, based on the deep learning model and in combination with the differential privacy algorithm, after noise adding processing is carried out on the identified privacy data, dynamic risk monitoring is carried out on the shared data, the privacy of the patient can be protected, and risks existing in the data sharing process can be monitored and managed in real time.

The invention discloses a fixed budget sorting preferential method and system and a storage medium, and relates to the technical field of network architectures, and the method comprises the following steps: S1, dividing all candidate schemes into a plurality of groups, and carrying out the initialization setting; s2, based on a multi-round mechanism, independently executing a local selection process of a group of candidate schemes by each processor to obtain a local optimal candidate scheme; s3, each processor generates an additional observation value for the local optimal candidate scheme by using the remaining sampling budget; and then, calculating a sample mean value of the additional observation value of each local optimal candidate scheme, and selecting the optimal candidate scheme with the maximum sample mean value as the optimal candidate scheme. According to the method, the problem of large-scale fixed budget sorting preferential selection can be efficiently solved, the friendliness of user experience is ensured, and good expandability is achieved.

The utility model relates to the technical field of advertising boards, and discloses a multi-surface rotary display advertising board which comprises a base, a display frame and an advertising board, an upper groove is formed in the upper end face of the base, a mounting groove is formed in one side of the lower end face of the upper groove, and a driving motor is fixedly arranged in the mounting groove; the output end of the driving motor is fixedly connected with a transmission gear, the lower end face of the display frame is fixedly connected with a rotating disc, the lower end face of the rotating disc is provided with a lower groove, the inner wall of the lower groove is fixedly sleeved with a transmission gear ring, and the transmission gear is meshed with the transmission gear ring. According to the utility model, the advertisement board can be conveniently assembled and disassembled through the arranged advertisement board convenient assembly and disassembly mechanism so as to achieve the purpose of convenient assembly, use, disassembly and replacement, so that better usability is achieved, and meanwhile, the advertisement board can be better displayed through the arranged lighting structure, so that the purpose of convenient use is achieved.

The invention provides a truss bridge node supporting device and a truss bridge. The truss bridge node supporting device comprises an upper bearing plate, a lower bearing plate, a corrugated metal plate, a first arc-shaped plate and a second arc-shaped plate. The upper bearing plate is detachably connected with a node of the truss bridge, and the two ends of the corrugated metal plate are fixedly connected with the upper bearing plate and the lower bearing plate respectively; the first arc-shaped plate and the second arc-shaped plate have the same structure and are U-shaped metal plates with openings; the upper end and the lower end of the second arc-shaped plate are fixedly connected with the upper bearing plate and the lower bearing plate correspondingly. Wherein the first arc-shaped plate, the second arc-shaped plate and the corrugated metal plate jointly support nodes of the upper bearing plate and the truss bridge, and the lower bearing plate is relatively fixed to the ground or the bridge floor. According to the truss bridge node supporting device, reliable supporting of the truss bridge node is achieved, and the truss bridge node supporting device can be replaced in time when rusted; according to the mechanical design of the overall structure, the safety and durability of the structure are considered, and economical efficiency and practicability are also considered.

The utility model discloses a multifunctional firework lead twisting device, and relates to the technical field of ammunition. A multifunctional firework lead twisting device comprises a base and a supporting plate, a tensioning device is arranged on the supporting plate and comprises a sliding seat, a fixed mounting block, a rotary mounting block and a second hydraulic telescopic rod, the supporting plate is fixedly mounted on the upper surface of the base, and the fixed mounting block is fixedly connected to the outer wall of the rear end of the supporting plate. The outer wall of the lower end of the rotary mounting block is rotationally connected with the interior of the upper end of the fixed mounting block, a second hydraulic telescopic rod in the tensioning device stretches out and draws back to drive a movable block to move, a movable rod is made to rotate, then a supporting frame is pushed to move, the position and angle of a guide frame are adjusted, and proper tension is applied to a lead. The device ensures that the lead is kept in a tight state in the twisting process, thereby avoiding the phenomena that the thread rope is easy to loosen and wind in the releasing process, the lead is not uniform in twisting degree and even loose, and the practicability and flexibility of the device are reduced at the same time.

The perforating device for the constructional engineering comprises a noise reduction box, bases are fixedly installed on the two sides of the bottom of the noise reduction box, a first motor is fixedly installed on the right side of the noise reduction box, four installation grooves are formed in the top of the noise reduction box, first air cylinders are fixedly installed in the installation grooves, and a second air cylinder is fixedly installed in the first air cylinders. A positioning cover is fixedly mounted at the top of the first air cylinder, a fixing frame is arranged at the bottom of the positioning cover, and a threaded sleeve is arranged in an inner cavity of the noise reduction box. The stability of the whole device is improved by arranging the base, the noise reduction box is arranged to contain the threaded sleeve, the threaded sleeve is arranged to install the punching drilling machine, the punching drilling machine is arranged to drill a plate, and the fixing groove is arranged to facilitate containing of the connecting rod. And the first sliding block is limited by arranging the first sliding groove, so that the first sliding block is prevented from shaking in the moving process.

The utility model discloses an aggregate firmness testing device, which relates to the technical field of testing devices, and comprises a device control bottom box and a preparation function box, the outer wall of the preparation function box is provided with a cleaning tank, the bottom of the preparation function box is provided with a stirring motor, the output end of the stirring motor is provided with a cleaning stirring shaft, and the cleaning stirring shaft is provided with a stirring shaft. A drying groove is formed in the outer wall of the preparation function box, a drying heating wire is installed on the inner wall of the drying groove, a drying platform plate is installed on the inner wall of the drying groove, and a gravel containing frame is arranged on the top of the drying platform plate. The preparation mechanism is installed, gravel is added into the cleaning tank, a large amount of water is added into the cleaning tank, soil in the gravel is removed through the cleaning stirring shaft, and then the cleaned gravel is taken out, added into the gravel containing frame and added to the drying platform plate; and a drying heating wire is used for drying the gravel in the gravel containing frame, so that the device has a pretreatment function, and the practicability of the device is improved.

The utility model relates to the technical field of dopamine raw material medicine purification preheating chambers, in particular to a dopamine raw material medicine purification preheating chamber structure which comprises a preheating chamber and a condensation chamber, a preheating structure is arranged in the preheating chamber, a preheating reinforcing structure is arranged in the preheating chamber, the preheating structure comprises a feeding seat, and the feeding seat is connected with the condensation chamber. The feeding base is fixedly arranged at the upper end of the preheating chamber, an air inlet pipe is arranged on the left side of the condensation chamber, a condensation pipe is arranged in the condensation chamber, and a heat conduction plate is arranged at the joint of the preheating chamber and the condensation chamber. According to the preheating chamber structure for purifying the dopamine raw material medicine, water vapor generated in the purifying chamber can be guided into the condensing chamber to be condensed, heat carried by the water vapor can be efficiently transmitted into the preheating chamber through the heat conducting plate, and the dopamine raw material medicine is preheated by utilizing the part of heat; the temperature of the purification chamber can be prevented from being reduced when the discharging pipe is fed into the purification chamber, and the practicability and efficiency of the device are improved.

The invention discloses an ultra-high hardness surface-strengthened GGr15 steel and a preparation method thereof, and belongs to the technical field of heat treatment of metal materials. The invention discloses an ultra-high hardness surface-strengthened GGr15 steel preparation method, which adopts a multi-stage composite carbonitriding process to quickly and efficiently form dispersed granular carbonitriding compounds on the surface of GGr15 bearing steel, which can not only realize high-efficiency carbonitriding on the surface of bearing steel, but also avoid abnormal growth and coarsening of carbonitriding compounds, and significantly improve the surface hardness and wear resistance of steel; the method significantly improves the carbonitriding speed and shortens the processing cycle, thereby realizing the practicality, economy and effectiveness of the carbonitriding treatment process, and the reagent cost used in the method is low, and the processing temperature and processing time are significantly reduced, showing great potential in energy saving, emission reduction and cost reduction.

The utility model discloses a building mortar discharge tank which comprises a stable base, two sides of the top of the stable base are both fixedly provided with two fixing seats, the sides, away from each other, of the fixing seats are fixedly provided with first motors, and the top of the stable base is provided with a discharge tank body. A positioning seat is fixedly mounted on the left side of the discharging tank body, a second motor is fixedly mounted on the left side of the positioning seat, a moving rod is arranged in an inner cavity of the positioning seat, a piston is arranged in an inner cavity of the discharging tank body, first sliding grooves are formed in the two sides of the inner cavity of the positioning seat, and the surface of the discharging tank body is sleeved with a gear disc. According to the discharging tank, the stable base is arranged to install the fixing base, the fixing base is arranged to install the first motor, the limiting sleeve is arranged to limit the bottom of the discharging tank body, the discharging tank body is prevented from shaking in the rotating process, and the positioning base is arranged to install the second motor.

The building material cutting device convenient to adjust is characterized in that an operation table is arranged on a base, a mounting cavity is formed in the upper end of the operation table, a plurality of first auxiliary cylinders are rotationally arranged in the mounting cavity, and a rack is arranged above the operation table; the front end of the machine frame is connected with the upper end of the operation table through two first supporting columns, the rear end of the machine frame is connected with the upper end of the base through two second supporting columns, and a sliding piece is arranged at the lower end of the machine frame. The cutting disc is connected with the output end of the cutting motor through the connecting unit, the connecting unit is rotationally arranged on the first supporting seat in a penetrating mode, and the first supporting seat and the cutting motor are arranged on the base. A discharging table is arranged on the base, the cutting unit is located between the base and the discharging table, and the discharging table is located between the two second supporting columns. The cutting device has the advantages of reducing labor intensity of operators, improving cutting efficiency, being easy to operate, low in manufacturing cost, not prone to damage and the like.

The invention discloses a high-salinity wastewater membrane separation pretreatment device which comprises an impurity removal unit, a membrane separation unit, a membrane separation unit, a membrane separation unit and a membrane separation unit which are sequentially arranged in the flowing direction of wastewater, and the impurity removal unit comprises an impurity removal chamber, a grating and a crushing assembly; the oil removal unit comprises a dissolved air tank and an air flotation chamber; the settling unit comprises a settling chamber and a settling tower plate; the filtering unit comprises a filtering chamber, a filtering cylinder and a filtering assembly. The device can crush large-particle pollutants in the high-salinity wastewater, remove pollutants such as petroleum through air flotation, fully mix the wastewater with a medicament, stand and settle, fully filter the wastewater and then send the wastewater to a membrane concentration process step, has the advantages of simple structure, convenience in operation, high operation efficiency, high practicability and the like, and is suitable for large-scale popularization and application.

The utility model discloses a dual power supply manager based on hydroelectric generation and bathroom equipment, and relates to the technical field of bathroom equipment, the dual power supply manager comprises a hydroelectric generation energy supply module, a storage battery module and a processor, the hydroelectric generation energy supply module responds to waterway flow information of the bathroom equipment to generate power supply electric energy and evaluation electric energy, the storage battery module provides power supply electric energy for the processor and provides evaluation electric energy. The storage battery module is used for conducting a supplementary energy supply loop of the storage battery module when the evaluated electric energy is smaller than a preset supplementary electric energy value, and providing supplementary electric energy for the processor; the control unit of the processor responds to electric energy information received by the electric energy input end of the processor and provides working electric energy for a to-be-powered module of the bathroom equipment, and the electric energy information is power supply electric energy or power supply electric energy and supplementary electric energy. According to the utility model, the stable operation of each functional module in the bathroom equipment is ensured by using a dual-power supply mode, and the power supply work of the bathroom equipment is executed in a low-cost, high-practicability and high-stability manner.

The present invention discloses a silo top distributor applied to the grain and oil field, and its structure includes a shell, an adjusting device, a plurality of feed ports and a plurality of discharge ports, the discharge ports face the entrance of the corresponding storage silo and include a central discharge port and a plurality of side discharge ports, the shell includes an upper cover plate, a middle box body and a lower cone bucket coaxially connected in sequence, the smaller opening end of the lower cone bucket is the central discharge port, the side discharge ports are evenly arranged circumferentially at positions close to the larger opening end of the lower cone bucket, and the adjusting device is used to achieve flow regulation of the central discharge port. The device directly uses the adjusting device to achieve uniform overflow operation of each discharge port, simplifies the device structure, and reduces the investment cost. At the same time, the distributor is a structure of one-point or multi-point feeding, and various structures are used to ensure that the output of the discharge ports is almost the same, which reduces the biased warehouse phenomenon of the traditional solution, improves the internal utilization rate of the storage silo, ensures the practicality of the storage silo, and reduces the classification phenomenon during the material entry process.

The utility model discloses a deodorization filter tank with a biological box, and relates to the technical field of auxiliary devices for dust coating separation, a separation inner vertical block is arranged at the middle position in a deodorization filter tank main body, the separation inner vertical block is fixedly connected with the deodorization filter tank main body, a built-in filter block is arranged above one side of the separation inner vertical block, and the built-in filter block is arranged above the other side of the separation inner vertical block. The built-in filter block is fixedly connected with the separation inner vertical block through a limiting clamping block; the composite filter block is arranged in the built-in filter block and comprises activated carbon, aluminum oxide and zeolite, the aluminum oxide is arranged on one side of the activated carbon, and the zeolite is arranged on the other side of the aluminum oxide and fixedly connected with the activated carbon; according to the deodorization filter tank with the biological box, due to the design of the composite filter blocks, the screening effect on waste gas can be better when the deodorization filter tank is used for treating the waste gas.

The utility model discloses a rotary driving device of a hydraulic excavator, which belongs to the technical field of rotary driving and is characterized in that a rotating ring is rotatably arranged in a bottom shell, a lower supporting seat matched with a lower locking ring is movably mounted at the bottom of the bottom shell, a plurality of groups of first open grooves are formed in the inner wall of the lower supporting seat, and first balls are mounted in the first open grooves; the outer wall of the lower locking ring is provided with a lower concave ring matched with the first balls, the inner wall of the upper supporting seat is provided with multiple sets of second open grooves, second balls are installed in the second open grooves, and the outer wall of the upper locking ring is provided with an upper concave ring matched with the second balls. A plurality of groups of locking structures are arranged on the top cover, and lock holes matched with the locking structures are formed in the inner wall of the bottom shell. Multiple locking can be performed on the rotating ring through cooperation of the lower supporting seat and the upper supporting seat, friction force during rotation can be greatly reduced through cooperation of the first ball and the second ball, and the bottom shell and the top cover can be quickly disassembled and assembled through the locking structure according to actual requirements.

The utility model discloses a high-rise building fireproof isolation device which comprises an installation frame seat, an installation plate is arranged on the front face of the installation frame seat, a clamping groove is formed in the top of the installation frame seat, a stabilizing seat is arranged in an inner cavity of the clamping groove, two positioning grooves are formed in the stabilizing seat, fixing columns are arranged in the positioning grooves, and the fixing columns are arranged in the fixing grooves. Second sliding grooves are formed in the positions, located on the two sides of the positioning groove, in the stabilizing base, and four rotating disc bases are arranged on the front face of the mounting plate. The clamping grooves are formed for containing the stabilizing bases, the stability of the whole device after installation is improved through the stabilizing bases, the fixing grooves are formed for containing the L-shaped positioning columns, the two sides of the installation frame base are conveniently fixed through the L-shaped positioning columns, the first springs are installed through the through grooves, and the stability of the whole device after installation is improved. The fixing column is contained by forming the positioning groove, and the second sliding block is limited by forming the second sliding groove.

Disclosed is a wireless charging guide providing method and / or an electronic device performing same. The electronic device comprises a processor and a memory for storing instructions to be executed by the processor, wherein, when the instructions are executed by the processor, the processor may determine whether the electronic device is in a charging area of a wireless charger, if it is determined that the electronic device is in the charging area, then identify at least one external electronic device that is currently connected to the electronic device or has a record of being previously connected to the electronic device, obtain battery charging state information of the identified at least one external electronic device, and output a charging guide interface for the identified at least one external electronic device, on the basis of a chargeable state of the wireless charger and the obtained battery charging state information.

The utility model relates to the technical field of door plate type protective windows, and discloses an O-shaped ring waterproof device for a door plate type protective window, which comprises a window frame and is characterized in that long grooves are formed in the left side and the right side of the interior of the window frame, O-shaped plates are fixedly connected to the interiors of the long grooves in the right side, a sliding groove is formed in the middle of the inner side of each O-shaped plate, and a sliding groove is formed in the middle of the inner side of each O-shaped plate. A sliding groove is formed in the top of the O-shaped plate, a circular plate is slidably connected to the inner side of the sliding groove, a first hole is formed in the top of the circular plate, a circular groove is formed in the top of the O-shaped plate, a second hole is formed in the circular groove, the inward side of the second hole communicates with an L-shaped pipe, and an inclined face is fixedly connected to the position, close to the edge, of the top of the O-shaped plate. According to the door plate type protection window, through mutual cooperation of the O-shaped plate, the circular plate, the first hole, the circular groove, the second hole, the L-shaped pipe, the inclined face and the inclined groove, the situation that due to the fact that rainwater is accumulated, an O-shaped ring cannot operate normally is avoided, and therefore the practicability of the door plate type protection window is reduced.

The utility model relates to the technical field of chips, in particular to a chip transport case with a protection structure, which comprises an upper sponge mat, a lower sponge mat arranged at the bottom of the upper sponge mat, an upper protection shell arranged at the top of the upper sponge mat, and a lower protection shell arranged at the bottom of the lower sponge mat. A threaded rod is arranged at the top of the lower protection shell, and a pressing ring is arranged outside the threaded rod. The chip transport box is protected by the protection component group and the outer transport box component group, so that the chip cannot be damaged due to bumping during long-time transport, and the normal use of the chip is ensured.

The invention discloses a roller shutter machine up-and-down limiting method and system based on image recognition, and belongs to the technical field of roller shutter machine recognized.The method specifically comprises the steps that a camera is arranged over the top of a greenhouse, a round indicator lamp is arranged on the surface of a main motor of a roller shutter machine, and the distance L between the round indicator lamp and a lens is recorded when the roller shutter machine is located at an upper limiting position; setting the object distance of the camera according to the distance L; recording the circular light spot diameter d / light spot diameter D of the circular indicator lamp in the camera sensor when the roller shutter machine is located at the upper limit / lower limit; in the process of opening or closing the greenhouse heat preservation curtain, video image frames are obtained in real time, the image frames are preprocessed, circular light spots in the image frames are recognized, the diameter of the circular light spots is obtained, and when the diameter of the circular light spots is equal to d, it is judged that the curtain rolling machine is located at the upper limit, and a power source of the curtain rolling machine is turned off; and when the diameter of the circular light spot is equal to D, determining that the roller shutter machine is located at the lower limit, and turning off the power supply of the roller shutter machine.

The utility model relates to an automatic temperature control heating wire and a heating element with the same. The automatic temperature control heating wire comprises a plurality of leads, a temperature control heating layer and an insulating layer. The wires comprise first wires and second wires which are arranged in parallel and at intervals. The resistivity of the temperature control heating layer is increased along with temperature rise, one end of the temperature control heating layer wraps the first wire, the other end of the temperature control heating layer wraps the second wire, the temperature control heating layer is bent to enable the transverse section of the temperature control heating layer to be in a C shape, an opening is formed between the first wire and the second wire, and the insulating layer fills and extrudes the opening and wraps the temperature control heating layer. Therefore, the practicability and the safety of the self-temperature-control heating wire are improved.

The present application relates to the technical field of waist posture recognition, in particular to a human waist posture recognition and force state evaluation method and system based on an inertial sensor, comprising the following steps: collecting original motion data in real time through an inertial measurement unit worn on the L4-L5 segment of the human waist, wherein the original motion data comprises three-axis acceleration data and three-axis angular velocity data; using a Kalman filtering algorithm to filter noise and calibrate the coordinate system of the original motion data, to obtain standard waist motion characteristic data. The present application realizes accurate and continuous recognition of the waist posture in daily scenarios, completes quantitative evaluation of the force on the lumbar vertebrae and prediction of the damage risk, has high detection accuracy and strong scene adaptability, and is portable and easy to use, which can provide a comprehensive basis for the user to manage the health of the waist and effectively prevent lumbar muscle damage.

A glass bending test fixture includes a movable folding plate, a rotating structure, and side reference blocks. The rotating structure is symmetrically arranged on both outer sides of the movable folding plate along the Y-axis. The movable folding plate includes a left folding plate and a right folding plate. The side reference blocks are installed on one outer side of the right folding plate along the X-axis. The left folding plate has a left mounting portion on both outer sides along the Y-axis, and the right folding plate has a right mounting portion on both outer sides along the Y-axis. One end of the rotating structure is installed on the left mounting portion, and the other end is installed on the right mounting portion. The left and right folding plates are folded and unfolded through the rotating structure. This invention uses a rotating shaft to drive the left and right folding plates to achieve a 0° bending effect. After the fixture is unfolded, the left and right limiting blocks hold the left and right folding plates in place, thus limiting the fixture to 180°. It has the advantages of simple overall structure, good stability, simple operation, high work efficiency, and strong practicality.

The utility model relates to the technical field of constructional engineering, in particular to a piling device which comprises a bottom plate, a positioning assembly is installed above the bottom plate and comprises a positioning sliding rod, the lower end of the positioning sliding rod is fixedly connected with the upper surface of the bottom plate, the outer surface of the positioning sliding rod is movably connected with a movable seat, and a movable groove is formed in the side surface of the movable seat. The outer surface of the bidirectional screw rod is in threaded connection with a movable block, the side surface of the movable block is fixedly connected with a V-shaped block, the side surface of the V-shaped block is fixedly connected with a connecting block, the interior of the connecting block is movably connected with a connecting rod, and one end of the connecting rod is fixedly connected with a check block; the other end of the connecting rod is fixedly connected with a rotating handle. According to the pile driving device, pile bodies of different sizes can be clamped and positioned while the pile driving safety is improved, the pile driving device is suitable for the pile bodies of various sizes and thicknesses, and the practicability of the device is improved.

The utility model discloses a hardware steel die for workpieces of various sizes, and relates to the technical field of auxiliary devices for hardware steel machining, a fixed lower bottom plate is arranged below a hardware steel die main block, the fixed lower bottom plate and the hardware steel die main block are of an integrated structure, movable transverse steel blocks are arranged on the two sides of the interior of the hardware steel die main block, and the movable transverse steel blocks are connected with the fixed lower bottom plate. Display graduated scales are arranged on the two sides of the upper portion of the fixed lower bottom plate, and the display graduated scales are fixedly connected with the fixed lower bottom plate through clamping grooves; the built-in rotating bearing is arranged in the middle of one side of the movable transverse steel block, one end of the built-in rotating bearing is fixedly connected with the movable transverse steel block through a clamping groove, and a rotating threaded handle is arranged at the other end of the built-in rotating bearing; according to the hardware steel die for the workpieces of the various sizes, the movable transverse steel block can move more conveniently through the design of the rotating threaded handle, and the moving precision of the movable transverse steel block can be higher through the design of the display graduated scale.

The utility model relates to the technical field of detection rulers, in particular to a novel multifunctional civil engineering quality detection ruler which comprises a main body, a square groove is formed in the side surface of the main body, an angle measuring plate is movably connected in the square groove, a movable groove is formed in the inner bottom of the square groove, the inner bottom face of the movable groove penetrates through the lower surface of the main body, and the movable groove is in an L shape. A fixed column is fixedly connected into the movable groove, a rotating rod is movably connected to the outer surface of the fixed column, scales are arranged on the side surface of the main body, an inner cavity is formed in the lower surface of the main body, and a measuring scale is arranged in the inner cavity. According to the utility model, various detection tools can be concentrated, carrying of numerous tools is avoided, the detection process is simpler, time-saving and labor-saving, quality detection is facilitated, and the practicability of the detection ruler is improved.