18results about How to "Easy to return" patented technology

The invention discloses a deep tunnel surrounding rock mechanical parameter inversion method based on a three-dimensional brittle failure zone contour and sparrow optimization algorithm-information vector machine (SSA-IVM) combined optimization algorithm. The engineering technical problem that due to the fact that excavation instantaneous displacement is difficult to monitor, deep tunnel surrounding rock mechanical parameters are difficult to reasonably obtain through displacement back analysis is solved. The method comprises the following steps: firstly, constructing a tunnel FLAC3D numerical simulation model with the same ground stress condition at the occurrence position of a three-dimensional brittle failure zone; secondly, taking an absolute error between the total number of computational grid units in the actually measured brittle failure zone and the total number of computational grid units entering a plastic state in the range of the actually measured brittle failure zone after calculation of the FLAC3D numerical model as an optimization objective function; and then, by taking the tunnel surrounding rock mechanical parameters as optimization variables and taking a target function reaching a global minimum value as a target, performing global optimization by combining a tunnel FLAC3D numerical model and adopting an SSA-IVM joint optimization algorithm, thereby obtaining reasonable tunnel surrounding rock mechanical parameters.

The invention discloses an APP cross-version automatic testing method based on a semantic relationship and causal difference, and relates to the field of vehicle-mounted human-computer interfaces, and the method comprises the steps: S1, connecting a tested device with a testing environment, and obtaining an interface structure description and a screenshot of a tested application through an interface collection module; s2, constructing a semantic business card for each interactive element in the interface; the semantic business card comprises a control category, a resource identifier, an accessible description, an order in a page, information of the page and an adjacent text feature, and the semantic business card is used for cross-version, cross-theme and cross-resolution element identification after fusion; s3, constructing an element relation graph based on the interface structure description; the relation graph comprises a hierarchical father-son relation and a causal relation triggered by clicking; the causal relationship is established by comparing interface element sets before and after each operation and identifying newly appearing elements and disappearing elements.

The utility model discloses a high-temperature-resistant bus joint silica gel protection box, which comprises a protection box body and a guide assembly, and the guide assembly is positioned at the bottom of the protection box body. According to the utility model, through the arrangement of the guide assembly, when a bus joint needs to be maintained, the protection box body is opened firstly, so that the first connecting block and the second connecting block are located on the same horizontal line, a pushing force is applied to the guide plate, and after a limiting column passes through the interior of the first connecting block, a pulling force is applied to the guide column; according to the scheme, the limiting block and the connecting column are driven to penetrate through the connecting hole, then rotating force is applied to the limiting block, so that the limiting block and the limiting groove are consistent in shape, force applied to the guide column is cancelled, the limiting block is clamped in the guide plate under the action of elastic force of the first spring, and then the bus connector can be exposed and maintained. And the protection box is positioned at the bottom of the bus joint, so that the protection box is convenient to return again, and the tedious degree of maintaining the bus joint is reduced.

This invention relates to the field of centrifugal fans, specifically disclosing a portable energy-saving electric fan and its usage method. The fan includes a housing with a grille and a fan installed inside the housing. The fan's outlet is aligned with the grille. The top of the housing has an opening through which the fan can extend. The fan's outer casing is divided into a fixed part and at least one movable part. The movable part is movable relative to the fixed part. When the movable and fixed parts are separated, maintenance tools can be inserted into the casing to inspect the inner wall and impeller. This invention allows the fan to be lifted from the housing for easy maintenance. Furthermore, the fan's outer casing can be divided into a fixed part and at least one movable part, and the fixed and movable parts can be fixed to the fixed part without connecting parts, only by a retaining element inside the housing, facilitating maintenance and return to its original position after maintenance.

The utility model discloses a cutting device with a good positioning effect for an electrolytic bath pole frame, which belongs to the technical field of cutting devices and comprises a working table fixedly mounted in a shell, a motor IV fixedly mounted in the working table, a worm fixedly mounted at the output end of the motor IV, a worm gear meshed with one side of the worm, and a rotating disc fixedly mounted at the top end of the worm gear. A plurality of square plates are slidably mounted at the top end of the workbench, trapezoidal blocks are fixedly mounted at the bottom ends of the square plates, round blocks are fixedly mounted at the bottom ends of the trapezoidal blocks and rotatably connected with the connecting rods, supporting columns are fixedly mounted at the top ends of the square plates, and sliding vertical plates are slidably mounted on the two sides of each supporting column. According to the cutting device, high-precision positioning and stable clamping of a metal material plate are achieved through cooperation of worm and gear transmission and a precise sliding mechanism, flexible adjustment of the cutting device in a three-dimensional space is achieved through combination of the motor and the threaded rod, and the cutting requirements of different sizes and shapes are met.

The utility model belongs to the field of terminal crimping machines, and particularly relates to a pressure-adjustable terminal crimping machine, which comprises a concave seat, the top of the concave seat is slidably connected with a sliding column, the sliding column penetrates through the concave seat, the top of the sliding column is fixedly connected with a filler strip, the outer side of the sliding column is provided with a lubricating mechanism, the bottom of the sliding column is fixedly connected with a bottom plate, and the bottom of the bottom plate is fixedly connected with a pressing plate. The bottom plate is slidably connected to the interior of the concave base, and a support is fixedly connected to the back of the concave base. The adjusting rod in threaded connection with the telescopic shaft of the air cylinder is arranged in the telescopic shaft of the air cylinder, the knob is arranged on the adjusting rod, and meanwhile, the pressing strip with the guide column is arranged at the tail end of the adjusting rod, so that on the premise that the stroke of the air cylinder is fixed, the telescopic amount of the adjusting rod in the telescopic shaft is controlled by rotating the adjusting rod; and the purpose of adjusting the crimping pressure of the terminal can be achieved.

The utility model relates to a rerailer. The rerailer comprises a base and a positioning seat, the base comprises a bottom plate and two guide protrusions arranged on the bottom plate in a spaced mode, the bottom plate is further provided with a mounting groove located between the two guide protrusions, and the mounting groove communicates with the first end of the bottom plate; the positioning base comprises a first base plate and a second base plate which are arranged at the first end in a spaced mode, the first base plate and the second base plate are arranged on the side, close to the bottom plate, of the guiding protrusion, the first base plate and the second base plate are provided with a first side and a second side which deviate from the guiding protrusion respectively, and the first side and the second side abut against the sleeper. Wherein the first side is further provided with a first positioning assembly used for clamping the side wall of the sleeper. The rerailer can be stably fixed to the sleeper, displacement of the rerailer in the using process is avoided, and therefore secondary derailing of the roller is avoided.

The utility model discloses a mechanical arm type payment robot, relates to the technical field of road toll collection, and aims to solve the technical problems that the position of a current card collecting machine is fixed, so that the card collecting position is fixed, a card cannot be directly inserted into the card collecting position, and the card returning efficiency is influenced. The card collecting machine comprises a card collecting machine body, a steering engine is installed in one side of the card collecting machine body, an extension arm is fixedly installed at the output end of the steering engine, a card collecting box used for collecting cards is installed at the side end of the extension arm, and an L-shaped fixing plate is fixedly arranged on the side face of the extension arm. Therefore, the card collecting box can extend to the position close to the vehicle window, a driver can return cards easily, the card collecting box can be automatically turned over to adjust the angle in the turning and lifting process through rotating connection between the rotating block and the clamping piece, and the vehicle card returning device has the advantages that the vehicle card returning is convenient, time is saved, and the card returning efficiency is improved.

The utility model discloses a one-way ticket recovery mechanism device in a gate, and relates to the technical field of rail transit ticket recovery. The device structurally comprises a rack, a transfer swing ticket bin, a driving motor, a radio frequency card reader-writer and a recovery box, the rack comprises a rectangular frame plate; the upper end of the rectangular frame plate is provided with a ticket inlet corresponding to a ticket recovery port arranged at the upper end of the gate. A rectangular batten is fixed between the two side walls of the rectangular frame plate, and the rectangular batten is located right below the ticket inlet; a rotating shaft mounting hole is formed in one side wall of the rectangular frame plate. According to the utility model, through the combination of the transfer swing ticket bin and the driving motor, the transmission path of ticket cards is simplified, the use of a sensor and an electromagnetic valve is reduced, and the overall structure is more compact and concise; the radio frequency card reader-writer is used for reading and judging before the ticket card falls into the transfer swing ticket bin, so that the destination of the ticket card is determined in advance, and the processing speed is remarkably improved; the structure is compact, operation is easy and convenient, and good practicability and popularization value are achieved.

This utility model discloses a screw pump mounting shock-absorbing base, comprising: a base for providing a load-bearing foundation for the overall structure; a tray disposed on the base for mounting the screw pump body and capable of rising and falling with the structure to adapt to different installation heights; a shock absorber disposed above the base for absorbing the impact and vibration generated during the operation of the screw pump; a sliding top block slidably disposed on the base; multiple rod groups disposed between the tray and the sliding top block, the rod groups being composed of intersecting connecting rods for supporting the tray and guiding its rising and falling; rotating blocks disposed at the intersection corners of the rod groups for connecting adjacent connecting rods and achieving linkage adjustment; and a lead screw threadedly connected to the multiple rotating blocks for driving the rod groups to move the tray to achieve rising and falling adjustment.

The present application relates to the technical field of grinding and crushing, and particularly relates to a powder processing and shaping device and a magnesium oxide production system. The powder processing and shaping device comprises a rack, a grinding cylinder and a screening mechanism. The screening mechanism comprises a fixed plate group, a material distribution ring and a synchronous ring. The fixed plate group is fixed to the rack, the synchronous ring is rotationally matched with the fixed plate group, and the fixed plate group and the synchronous ring define an annular material distribution chamber. The fixed plate group is provided with filter holes, a return port and a discharge port. The filter holes are provided on the side of the fixed plate group in the axial direction of the grinding cylinder, allowing the material to pass through and preventing the grinding balls from passing through. The grinding balls cannot directly hit the fixed plate group under the action of gravity, reducing the damage to the side of the fixed plate group where the filter holes are provided. The material distribution ring is arranged in the annular chamber and rotates with the synchronous ring to screen the material. The powder with qualified particle size can be discharged in time, and the unqualified material is returned to the grinding from the return port, without the need for an external conveying mechanism to return the unqualified material, and the structure is more compact and has high integration.

The utility model discloses a lettering educational toy which comprises a box body, the box body comprises a first box body and a second box body which are connected with each other, and the first box body and the second box body can be closed and unfolded; a first storage table is arranged in the first box body, a first groove is formed in the first storage table, and a plurality of cards are placed in the first groove; a second storage table is arranged on the second box body, and a plurality of second grooves and a plurality of third grooves are formed in the second storage table; stamps are placed in the second grooves respectively, and the colors of the inkpad boxes are different. A box of inkpad is placed in each third groove. The lettering educational toy provided by the utility model integrates two functions of literacy and color recognition, and is stronger in interestingness; the structural design is reasonable, and storage is convenient.

A kind of feeding device of semiconductor cylindrical graphite fine grinding equipment, it is related to graphite production field, including discharge plate, lifting material part and feed plate, the lifting material part includes lifting rod, lifting arc plate and auxiliary straight plate, the auxiliary straight plate is the vertical plate that extends downward from the upper end edge of the feed plate, the lifting arc plate is the arc surface plate with notch upwards, the upper end of the lifting rod is connected with the lifting arc plate, the lower end of the lifting rod is connected with motor shaft end, the auxiliary straight plate has shake-off convex grain, the shake-off convex grain is the spherical convex grain that protrudes outward from the surface of the auxiliary straight plate, avoid the situation that the graphite rod appears when fine grinding feeding accumulation, so that the feeding of fine grinding equipment is stable, improve processing efficiency.

The utility model discloses a universal integrated inflation chuck of slitting machine, which aims at solving the problem that the existing inflation chuck is only suitable for the expansion and fixation of a size specification paper core and has poor universality. The invention comprises a chuck body, a plurality of clamping segments arranged on the chuck body and sequentially decreasing along the axial outer diameter, all the clamping segments together forming a stepped shaft structure, an axially movable piston installed in the chuck body, a plurality of radially movable clamping bodies installed on the clamping segments, an inclined push surface corresponding to the clamping bodies arranged on the outer wall of the piston, an inclined abutting surface arranged on the clamping bodies, the push surface and the abutting surface being in close contact, and the piston axially moving to drive the clamping bodies to move radially. The inflation chuck of the patent application is universally applicable to the clamping of paper cores of various size specifications, and the chuck does not need to be disassembled and replaced during clamping, which is convenient to operate and has good effect on the expansion and fixation of the paper core.

The utility model relates to the technical field of industrial lubricating equipment, in particular to an intelligent lubricating pump capable of adjusting oil outlet quantity, which comprises an intelligent controller and a driving base, the driving base is connected with an oil cup assembly through an oil cup base, the oil cup assembly comprises an oil cup, the oil cup is communicated with the oil cup base, and an oil seal is arranged on the inner wall of the oil cup. The oil cup base is provided with an oil supplementing opening used for supplementing lubricating grease, the oil cup base is provided with multiple oil outlet assemblies used for controlling the oil outlet amount of the lubricating grease, the oil outlet assemblies are evenly arranged on the oil cup base at intervals, and each oil outlet assembly comprises an oil outlet pipe core connected with the oil cup base through threads. An oil inlet hole communicating with the oil cup is formed in one end of the oil outlet pipe core, one end of the oil inlet hole is slidably connected with a plunger used for pushing lubricating grease, and an oil outlet is formed in the end, away from the plunger, of the oil outlet pipe core.

The utility model belongs to the technical field of medical instruments, and discloses a dilator which comprises an upper blade, a lower blade, a swing arm, a first hook and a second hook, the upper blade and the lower blade are rotatably connected through a first rotating shaft, the swing arm is rotatably connected to the lower blade through a second rotating shaft, and the axis of the second rotating shaft is parallel to the axis of the first rotating shaft. The first hook is arranged on the upper blade and can rotate around the axis of the first rotating shaft along with the upper blade towards the side close to the second rotating shaft until reaching a preset position, the second hook is arranged on the swing arm, the swing arm can rotate around the axis of the second rotating shaft, and the second hook can hook the first hook; the hooking position is located on the side, away from the second rotating shaft, of the first hook. According to the utility model, after the upper blade rotates relative to the lower blade to open the vagina to a preset space, medical staff can lock the upper blade and the lower blade only by controlling the swing arm to rotate, so that the upper blade is prevented from returning due to closing of the vagina, the operation is simple, and the use of the medical staff is facilitated.

The application discloses a 3D printer glaze spraying head, which aims to solve the problems of manual operation, high labor intensity and low work efficiency of ceramic glaze spraying. The application comprises a storage tank for loading glaze, a glaze spraying body for connecting with a 3D printer, a jet nozzle installed on the glaze spraying body for spraying high-pressure air flow, and a discharge pipe with one end connected to the storage tank and the other end opening close to the opening end of the jet nozzle. The jet nozzle sprays high-pressure air flow to generate negative pressure at the opening end of the discharge pipe, so that the discharge pipe draws glaze in the storage tank and discharges the glaze from the opening end of the discharge pipe, and the high-pressure air flow blows the discharged glaze to the surface of a ceramic product. The 3D printer glaze spraying head can automatically realize glaze spraying operation, reduce labor intensity, improve work efficiency and product quality.